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memory: Remove unreachable return statement
[mirror_qemu.git] / qemu-char.c
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6f97dba0
AL		 1/*
2 * QEMU System Emulator
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
d38ea87a 24#include "qemu/osdep.h"
6f97dba0 25#include "qemu-common.h"
83c9089e 26#include "monitor/monitor.h"
9c17d615 27#include "sysemu/sysemu.h"
d49b6836 28#include "qemu/error-report.h"
1de7afc9 29#include "qemu/timer.h"
dccfcd0e 30#include "sysemu/char.h"
cf3ebac7 31#include "hw/usb.h"
c5a415a0 32#include "qmp-commands.h"
cfb429cb
CM		 33#include "qapi/qmp-input-visitor.h"
34#include "qapi/qmp-output-visitor.h"
35#include "qapi-visit.h"
e9cf2fe0 36#include "qemu/base64.h"
9894dc0c
DB		 37#include "io/channel-socket.h"
38#include "io/channel-file.h"
a8fb5427 39#include "io/channel-tls.h"
6f97dba0 40
6f97dba0
AL		 41#include <zlib.h>
42
43#ifndef _WIN32
44#include <sys/times.h>
45#include <sys/wait.h>
46#include <termios.h>
47#include <sys/mman.h>
48#include <sys/ioctl.h>
24646c7e 49#include <sys/resource.h>
6f97dba0
AL		 50#include <sys/socket.h>
51#include <netinet/in.h>
24646c7e 52#include <net/if.h>
24646c7e 53#include <arpa/inet.h>
6f97dba0
AL		 54#include <netdb.h>
55#include <sys/select.h>
71e72a19 56#ifdef CONFIG_BSD
3294ce18
MT		 57#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
58#include <dev/ppbus/ppi.h>
59#include <dev/ppbus/ppbconf.h>
c5e97233 60#elif defined(__DragonFly__)
c5e97233
BS		 61#include <dev/misc/ppi/ppi.h>
62#include <bus/ppbus/ppbconf.h>
6f97dba0 63#endif
bbe813a2 64#else
6f97dba0 65#ifdef __linux__
6f97dba0
AL		 66#include <linux/ppdev.h>
67#include <linux/parport.h>
68#endif
69#ifdef __sun__
6f97dba0
AL		 70#include <sys/ethernet.h>
71#include <sys/sockio.h>
72#include <netinet/arp.h>
73#include <netinet/in.h>
74#include <netinet/in_systm.h>
75#include <netinet/ip.h>
76#include <netinet/ip_icmp.h> // must come after ip.h
77#include <netinet/udp.h>
78#include <netinet/tcp.h>
6f97dba0
AL		 79#endif
80#endif
81#endif
82
1de7afc9 83#include "qemu/sockets.h"
cbcc6336 84#include "ui/qemu-spice.h"
6f97dba0 85
9bd7854e 86#define READ_BUF_LEN 4096
7b0bfdf5 87#define READ_RETRIES 10
c4095726 88#define TCP_MAX_FDS 16
9bd7854e 89
cfb429cb
CM		 90/***********************************************************/
91/* Socket address helpers */
cfb429cb 92
0ff0fad2
DB		 93static char *SocketAddress_to_str(const char *prefix, SocketAddress *addr,
94 bool is_listen, bool is_telnet)
16cc4ffe 95{
130257dc 96 switch (addr->type) {
16cc4ffe 97 case SOCKET_ADDRESS_KIND_INET:
0ff0fad2
DB		 98 return g_strdup_printf("%s%s:%s:%s%s", prefix,
99 is_telnet ? "telnet" : "tcp", addr->u.inet->host,
100 addr->u.inet->port, is_listen ? ",server" : "");
16cc4ffe
CM		 101 break;
102 case SOCKET_ADDRESS_KIND_UNIX:
0ff0fad2
DB		 103 return g_strdup_printf("%sunix:%s%s", prefix,
104 addr->u.q_unix->path,
105 is_listen ? ",server" : "");
16cc4ffe
CM		 106 break;
107 case SOCKET_ADDRESS_KIND_FD:
0ff0fad2
DB		 108 return g_strdup_printf("%sfd:%s%s", prefix, addr->u.fd->str,
109 is_listen ? ",server" : "");
16cc4ffe
CM		 110 break;
111 default:
112 abort();
113 }
114}
115
0ff0fad2
DB		 116static char *sockaddr_to_str(struct sockaddr_storage *ss, socklen_t ss_len,
117 struct sockaddr_storage *ps, socklen_t ps_len,
118 bool is_listen, bool is_telnet)
16cc4ffe 119{
01ca519f
CM		 120 char shost[NI_MAXHOST], sserv[NI_MAXSERV];
121 char phost[NI_MAXHOST], pserv[NI_MAXSERV];
16cc4ffe
CM		 122 const char *left = "", *right = "";
123
124 switch (ss->ss_family) {
125#ifndef _WIN32
126 case AF_UNIX:
0ff0fad2
DB		 127 return g_strdup_printf("unix:%s%s",
128 ((struct sockaddr_un *)(ss))->sun_path,
129 is_listen ? ",server" : "");
16cc4ffe
CM		 130#endif
131 case AF_INET6:
132 left = "[";
133 right = "]";
134 /* fall through */
135 case AF_INET:
01ca519f
CM		 136 getnameinfo((struct sockaddr *) ss, ss_len, shost, sizeof(shost),
137 sserv, sizeof(sserv), NI_NUMERICHOST | NI_NUMERICSERV);
138 getnameinfo((struct sockaddr *) ps, ps_len, phost, sizeof(phost),
139 pserv, sizeof(pserv), NI_NUMERICHOST | NI_NUMERICSERV);
0ff0fad2
DB		 140 return g_strdup_printf("%s:%s%s%s:%s%s <-> %s%s%s:%s",
141 is_telnet ? "telnet" : "tcp",
142 left, shost, right, sserv,
143 is_listen ? ",server" : "",
144 left, phost, right, pserv);
16cc4ffe
CM		 145
146 default:
0ff0fad2 147 return g_strdup_printf("unknown");
16cc4ffe
CM		 148 }
149}
150
6f97dba0
AL		 151/***********************************************************/
152/* character device */
153
72cf2d4f
BS		 154static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
155 QTAILQ_HEAD_INITIALIZER(chardevs);
2970a6c9 156
d0d7708b
DB		 157static void qemu_chr_free_common(CharDriverState *chr);
158
159CharDriverState *qemu_chr_alloc(ChardevCommon *backend, Error **errp)
db39fcf1
PB		 160{
161 CharDriverState *chr = g_malloc0(sizeof(CharDriverState));
f3db17b9 162 qemu_mutex_init(&chr->chr_write_lock);
d0d7708b
DB		 163
164 if (backend->has_logfile) {
165 int flags = O_WRONLY | O_CREAT;
166 if (backend->has_logappend &&
167 backend->logappend) {
168 flags |= O_APPEND;
169 } else {
170 flags |= O_TRUNC;
171 }
172 chr->logfd = qemu_open(backend->logfile, flags, 0666);
173 if (chr->logfd < 0) {
174 error_setg_errno(errp, errno,
175 "Unable to open logfile %s",
176 backend->logfile);
177 g_free(chr);
178 return NULL;
179 }
180 } else {
181 chr->logfd = -1;
182 }
183
db39fcf1
PB		 184 return chr;
185}
186
a425d23f 187void qemu_chr_be_event(CharDriverState *s, int event)
6f97dba0 188{
73cdf3f2
AG		 189 /* Keep track if the char device is open */
190 switch (event) {
191 case CHR_EVENT_OPENED:
16665b94 192 s->be_open = 1;
73cdf3f2
AG		 193 break;
194 case CHR_EVENT_CLOSED:
16665b94 195 s->be_open = 0;
73cdf3f2
AG		 196 break;
197 }
198
6f97dba0
AL		 199 if (!s->chr_event)
200 return;
201 s->chr_event(s->handler_opaque, event);
202}
203
fee204fd 204void qemu_chr_be_generic_open(CharDriverState *s)
6f97dba0 205{
bd5c51ee 206 qemu_chr_be_event(s, CHR_EVENT_OPENED);
6f97dba0
AL		 207}
208
d0d7708b
DB		 209
210/* Not reporting errors from writing to logfile, as logs are
211 * defined to be "best effort" only */
212static void qemu_chr_fe_write_log(CharDriverState *s,
213 const uint8_t *buf, size_t len)
214{
215 size_t done = 0;
216 ssize_t ret;
217
218 if (s->logfd < 0) {
219 return;
220 }
221
222 while (done < len) {
223 do {
224 ret = write(s->logfd, buf + done, len - done);
225 if (ret == -1 && errno == EAGAIN) {
226 g_usleep(100);
227 }
228 } while (ret == -1 && errno == EAGAIN);
229
230 if (ret <= 0) {
231 return;
232 }
233 done += ret;
234 }
235}
236
2cc6e0a1 237int qemu_chr_fe_write(CharDriverState *s, const uint8_t *buf, int len)
6f97dba0 238{
9005b2a7
PB		 239 int ret;
240
241 qemu_mutex_lock(&s->chr_write_lock);
242 ret = s->chr_write(s, buf, len);
d0d7708b
DB		 243
244 if (ret > 0) {
245 qemu_chr_fe_write_log(s, buf, ret);
246 }
247
9005b2a7
PB		 248 qemu_mutex_unlock(&s->chr_write_lock);
249 return ret;
6f97dba0
AL		 250}
251
cd18720a
AL		 252int qemu_chr_fe_write_all(CharDriverState *s, const uint8_t *buf, int len)
253{
254 int offset = 0;
09313047 255 int res = 0;
cd18720a 256
9005b2a7 257 qemu_mutex_lock(&s->chr_write_lock);
cd18720a
AL		 258 while (offset < len) {
259 do {
260 res = s->chr_write(s, buf + offset, len - offset);
261 if (res == -1 && errno == EAGAIN) {
262 g_usleep(100);
263 }
264 } while (res == -1 && errno == EAGAIN);
265
9005b2a7 266 if (res <= 0) {
cd18720a
AL		 267 break;
268 }
269
cd18720a
AL		 270 offset += res;
271 }
d0d7708b
DB		 272 if (offset > 0) {
273 qemu_chr_fe_write_log(s, buf, offset);
274 }
275
9005b2a7 276 qemu_mutex_unlock(&s->chr_write_lock);
cd18720a 277
9005b2a7
PB		 278 if (res < 0) {
279 return res;
280 }
cd18720a
AL		 281 return offset;
282}
283
7b0bfdf5
NN		 284int qemu_chr_fe_read_all(CharDriverState *s, uint8_t *buf, int len)
285{
286 int offset = 0, counter = 10;
287 int res;
288
289 if (!s->chr_sync_read) {
290 return 0;
291 }
292
293 while (offset < len) {
294 do {
295 res = s->chr_sync_read(s, buf + offset, len - offset);
296 if (res == -1 && errno == EAGAIN) {
297 g_usleep(100);
298 }
299 } while (res == -1 && errno == EAGAIN);
300
301 if (res == 0) {
302 break;
303 }
304
305 if (res < 0) {
306 return res;
307 }
308
309 offset += res;
310
311 if (!counter--) {
312 break;
313 }
314 }
315
316 return offset;
317}
318
41084f1b 319int qemu_chr_fe_ioctl(CharDriverState *s, int cmd, void *arg)
6f97dba0
AL		 320{
321 if (!s->chr_ioctl)
322 return -ENOTSUP;
323 return s->chr_ioctl(s, cmd, arg);
324}
325
909cda12 326int qemu_chr_be_can_write(CharDriverState *s)
6f97dba0
AL		 327{
328 if (!s->chr_can_read)
329 return 0;
330 return s->chr_can_read(s->handler_opaque);
331}
332
fa5efccb 333void qemu_chr_be_write(CharDriverState *s, uint8_t *buf, int len)
6f97dba0 334{
ac310734
SW		 335 if (s->chr_read) {
336 s->chr_read(s->handler_opaque, buf, len);
337 }
6f97dba0
AL		 338}
339
74c0d6f0 340int qemu_chr_fe_get_msgfd(CharDriverState *s)
7d174059 341{
c76bf6bb 342 int fd;
4f858614 343 return (qemu_chr_fe_get_msgfds(s, &fd, 1) == 1) ? fd : -1;
c76bf6bb
NN		 344}
345
346int qemu_chr_fe_get_msgfds(CharDriverState *s, int *fds, int len)
347{
348 return s->get_msgfds ? s->get_msgfds(s, fds, len) : -1;
7d174059
MM		 349}
350
d39aac7a
NN		 351int qemu_chr_fe_set_msgfds(CharDriverState *s, int *fds, int num)
352{
353 return s->set_msgfds ? s->set_msgfds(s, fds, num) : -1;
354}
355
13661089
DB		 356int qemu_chr_add_client(CharDriverState *s, int fd)
357{
358 return s->chr_add_client ? s->chr_add_client(s, fd) : -1;
359}
360
6f97dba0
AL		 361void qemu_chr_accept_input(CharDriverState *s)
362{
363 if (s->chr_accept_input)
364 s->chr_accept_input(s);
98c8ee1d 365 qemu_notify_event();
6f97dba0
AL		 366}
367
e7e71b0e 368void qemu_chr_fe_printf(CharDriverState *s, const char *fmt, ...)
6f97dba0 369{
9bd7854e 370 char buf[READ_BUF_LEN];
6f97dba0
AL		 371 va_list ap;
372 va_start(ap, fmt);
373 vsnprintf(buf, sizeof(buf), fmt, ap);
2cc6e0a1 374 qemu_chr_fe_write(s, (uint8_t *)buf, strlen(buf));
6f97dba0
AL		 375 va_end(ap);
376}
377
386a5a1e
AS		 378static void remove_fd_in_watch(CharDriverState *chr);
379
6f97dba0 380void qemu_chr_add_handlers(CharDriverState *s,
7b27a769 381 IOCanReadHandler *fd_can_read,
6f97dba0
AL		 382 IOReadHandler *fd_read,
383 IOEventHandler *fd_event,
384 void *opaque)
385{
19083228
HG		 386 int fe_open;
387
da7d998b 388 if (!opaque && !fd_can_read && !fd_read && !fd_event) {
19083228 389 fe_open = 0;
386a5a1e 390 remove_fd_in_watch(s);
19083228
HG		 391 } else {
392 fe_open = 1;
2d6c1ef4 393 }
6f97dba0
AL		 394 s->chr_can_read = fd_can_read;
395 s->chr_read = fd_read;
396 s->chr_event = fd_event;
397 s->handler_opaque = opaque;
ac1b84dd 398 if (fe_open && s->chr_update_read_handler)
6f97dba0 399 s->chr_update_read_handler(s);
73cdf3f2 400
19083228 401 if (!s->explicit_fe_open) {
8e25daa8 402 qemu_chr_fe_set_open(s, fe_open);
19083228
HG		 403 }
404
73cdf3f2
AG		 405 /* We're connecting to an already opened device, so let's make sure we
406 also get the open event */
a59bcd31 407 if (fe_open && s->be_open) {
fee204fd 408 qemu_chr_be_generic_open(s);
73cdf3f2 409 }
6f97dba0
AL		 410}
411
412static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
413{
414 return len;
415}
416
0d64992b
PB		 417static CharDriverState *qemu_chr_open_null(const char *id,
418 ChardevBackend *backend,
419 ChardevReturn *ret,
420 Error **errp)
6f97dba0
AL		 421{
422 CharDriverState *chr;
d0d7708b 423 ChardevCommon *common = qapi_ChardevDummy_base(backend->u.null);
6f97dba0 424
d0d7708b
DB		 425 chr = qemu_chr_alloc(common, errp);
426 if (!chr) {
427 return NULL;
428 }
6f97dba0 429 chr->chr_write = null_chr_write;
bd5c51ee 430 chr->explicit_be_open = true;
1f51470d 431 return chr;
6f97dba0
AL		 432}
433
434/* MUX driver for serial I/O splitting */
6f97dba0
AL		 435#define MAX_MUX 4
436#define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
437#define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
438typedef struct {
7b27a769 439 IOCanReadHandler *chr_can_read[MAX_MUX];
6f97dba0
AL		 440 IOReadHandler *chr_read[MAX_MUX];
441 IOEventHandler *chr_event[MAX_MUX];
442 void *ext_opaque[MAX_MUX];
443 CharDriverState *drv;
799f1f23 444 int focus;
6f97dba0
AL		 445 int mux_cnt;
446 int term_got_escape;
447 int max_size;
a80bf99f
AL		 448 /* Intermediate input buffer allows to catch escape sequences even if the
449 currently active device is not accepting any input - but only until it
450 is full as well. */
451 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
452 int prod[MAX_MUX];
453 int cons[MAX_MUX];
2d22959d 454 int timestamps;
9005b2a7
PB		 455
456 /* Protected by the CharDriverState chr_write_lock. */
4ab312f7 457 int linestart;
2d22959d 458 int64_t timestamps_start;
6f97dba0
AL		 459} MuxDriver;
460
461
9005b2a7 462/* Called with chr_write_lock held. */
6f97dba0
AL		 463static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
464{
465 MuxDriver *d = chr->opaque;
466 int ret;
2d22959d 467 if (!d->timestamps) {
6975b713 468 ret = qemu_chr_fe_write(d->drv, buf, len);
6f97dba0
AL		 469 } else {
470 int i;
471
472 ret = 0;
4ab312f7
JK		 473 for (i = 0; i < len; i++) {
474 if (d->linestart) {
6f97dba0
AL		 475 char buf1[64];
476 int64_t ti;
477 int secs;
478
bc72ad67 479 ti = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
2d22959d
JK		 480 if (d->timestamps_start == -1)
481 d->timestamps_start = ti;
482 ti -= d->timestamps_start;
a4bb1db8 483 secs = ti / 1000;
6f97dba0
AL		 484 snprintf(buf1, sizeof(buf1),
485 "[%02d:%02d:%02d.%03d] ",
486 secs / 3600,
487 (secs / 60) % 60,
488 secs % 60,
a4bb1db8 489 (int)(ti % 1000));
6975b713 490 qemu_chr_fe_write(d->drv, (uint8_t *)buf1, strlen(buf1));
4ab312f7
JK		 491 d->linestart = 0;
492 }
6975b713 493 ret += qemu_chr_fe_write(d->drv, buf+i, 1);
4ab312f7
JK		 494 if (buf[i] == '\n') {
495 d->linestart = 1;
6f97dba0
AL		 496 }
497 }
498 }
499 return ret;
500}
501
502static const char * const mux_help[] = {
503 "% h print this help\n\r",
504 "% x exit emulator\n\r",
505 "% s save disk data back to file (if -snapshot)\n\r",
86d10328 506 "% t toggle console timestamps\n\r",
6f97dba0
AL		 507 "% b send break (magic sysrq)\n\r",
508 "% c switch between console and monitor\n\r",
509 "% % sends %\n\r",
510 NULL
511};
512
513int term_escape_char = 0x01; /* ctrl-a is used for escape */
514static void mux_print_help(CharDriverState *chr)
515{
516 int i, j;
517 char ebuf[15] = "Escape-Char";
518 char cbuf[50] = "\n\r";
519
520 if (term_escape_char > 0 && term_escape_char < 26) {
521 snprintf(cbuf, sizeof(cbuf), "\n\r");
522 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
523 } else {
524 snprintf(cbuf, sizeof(cbuf),
525 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
526 term_escape_char);
527 }
6975b713 528 qemu_chr_fe_write(chr, (uint8_t *)cbuf, strlen(cbuf));
6f97dba0
AL		 529 for (i = 0; mux_help[i] != NULL; i++) {
530 for (j=0; mux_help[i][j] != '\0'; j++) {
531 if (mux_help[i][j] == '%')
6975b713 532 qemu_chr_fe_write(chr, (uint8_t *)ebuf, strlen(ebuf));
6f97dba0 533 else
6975b713 534 qemu_chr_fe_write(chr, (uint8_t *)&mux_help[i][j], 1);
6f97dba0
AL		 535 }
536 }
537}
538
2724b180
AL		 539static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
540{
541 if (d->chr_event[mux_nr])
542 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
543}
544
6f97dba0
AL		 545static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
546{
547 if (d->term_got_escape) {
548 d->term_got_escape = 0;
549 if (ch == term_escape_char)
550 goto send_char;
551 switch(ch) {
552 case '?':
553 case 'h':
554 mux_print_help(chr);
555 break;
556 case 'x':
557 {
558 const char *term = "QEMU: Terminated\n\r";
6975b713 559 qemu_chr_fe_write(chr, (uint8_t *)term, strlen(term));
6f97dba0
AL		 560 exit(0);
561 break;
562 }
563 case 's':
6ab4b5ab 564 bdrv_commit_all();
6f97dba0
AL		 565 break;
566 case 'b':
a425d23f 567 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
6f97dba0
AL		 568 break;
569 case 'c':
570 /* Switch to the next registered device */
799f1f23
GH		 571 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
572 d->focus++;
573 if (d->focus >= d->mux_cnt)
574 d->focus = 0;
575 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
6f97dba0 576 break;
2d22959d
JK		 577 case 't':
578 d->timestamps = !d->timestamps;
579 d->timestamps_start = -1;
4ab312f7 580 d->linestart = 0;
2d22959d 581 break;
6f97dba0
AL		 582 }
583 } else if (ch == term_escape_char) {
584 d->term_got_escape = 1;
585 } else {
586 send_char:
587 return 1;
588 }
589 return 0;
590}
591
592static void mux_chr_accept_input(CharDriverState *chr)
593{
6f97dba0 594 MuxDriver *d = chr->opaque;
799f1f23 595 int m = d->focus;
6f97dba0 596
a80bf99f 597 while (d->prod[m] != d->cons[m] &&
6f97dba0
AL		 598 d->chr_can_read[m] &&
599 d->chr_can_read[m](d->ext_opaque[m])) {
600 d->chr_read[m](d->ext_opaque[m],
a80bf99f 601 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
6f97dba0
AL		 602 }
603}
604
605static int mux_chr_can_read(void *opaque)
606{
607 CharDriverState *chr = opaque;
608 MuxDriver *d = chr->opaque;
799f1f23 609 int m = d->focus;
6f97dba0 610
a80bf99f 611 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
6f97dba0 612 return 1;
a80bf99f
AL		 613 if (d->chr_can_read[m])
614 return d->chr_can_read[m](d->ext_opaque[m]);
6f97dba0
AL		 615 return 0;
616}
617
618static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
619{
620 CharDriverState *chr = opaque;
621 MuxDriver *d = chr->opaque;
799f1f23 622 int m = d->focus;
6f97dba0
AL		 623 int i;
624
625 mux_chr_accept_input (opaque);
626
627 for(i = 0; i < size; i++)
628 if (mux_proc_byte(chr, d, buf[i])) {
a80bf99f 629 if (d->prod[m] == d->cons[m] &&
6f97dba0
AL		 630 d->chr_can_read[m] &&
631 d->chr_can_read[m](d->ext_opaque[m]))
632 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
633 else
a80bf99f 634 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
6f97dba0
AL		 635 }
636}
637
638static void mux_chr_event(void *opaque, int event)
639{
640 CharDriverState *chr = opaque;
641 MuxDriver *d = chr->opaque;
642 int i;
643
644 /* Send the event to all registered listeners */
645 for (i = 0; i < d->mux_cnt; i++)
2724b180 646 mux_chr_send_event(d, i, event);
6f97dba0
AL		 647}
648
649static void mux_chr_update_read_handler(CharDriverState *chr)
650{
651 MuxDriver *d = chr->opaque;
652
653 if (d->mux_cnt >= MAX_MUX) {
654 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
655 return;
656 }
657 d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
658 d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
659 d->chr_read[d->mux_cnt] = chr->chr_read;
660 d->chr_event[d->mux_cnt] = chr->chr_event;
661 /* Fix up the real driver with mux routines */
662 if (d->mux_cnt == 0) {
663 qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
664 mux_chr_event, chr);
665 }
799f1f23
GH		 666 if (d->focus != -1) {
667 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
a7aec5da 668 }
799f1f23 669 d->focus = d->mux_cnt;
6f97dba0 670 d->mux_cnt++;
799f1f23 671 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
6f97dba0
AL		 672}
673
7b7ab18d
MR		 674static bool muxes_realized;
675
676/**
677 * Called after processing of default and command-line-specified
678 * chardevs to deliver CHR_EVENT_OPENED events to any FEs attached
679 * to a mux chardev. This is done here to ensure that
680 * output/prompts/banners are only displayed for the FE that has
681 * focus when initial command-line processing/machine init is
682 * completed.
683 *
684 * After this point, any new FE attached to any new or existing
685 * mux will receive CHR_EVENT_OPENED notifications for the BE
686 * immediately.
687 */
688static void muxes_realize_done(Notifier *notifier, void *unused)
689{
690 CharDriverState *chr;
691
692 QTAILQ_FOREACH(chr, &chardevs, next) {
693 if (chr->is_mux) {
694 MuxDriver *d = chr->opaque;
695 int i;
696
697 /* send OPENED to all already-attached FEs */
698 for (i = 0; i < d->mux_cnt; i++) {
699 mux_chr_send_event(d, i, CHR_EVENT_OPENED);
700 }
701 /* mark mux as OPENED so any new FEs will immediately receive
702 * OPENED event
703 */
704 qemu_chr_be_generic_open(chr);
705 }
706 }
707 muxes_realized = true;
708}
709
710static Notifier muxes_realize_notify = {
711 .notify = muxes_realize_done,
712};
713
3f0838ab
KB		 714static GSource *mux_chr_add_watch(CharDriverState *s, GIOCondition cond)
715{
716 MuxDriver *d = s->opaque;
717 return d->drv->chr_add_watch(d->drv, cond);
718}
719
3c0e5a4a
PB		 720static CharDriverState *qemu_chr_open_mux(const char *id,
721 ChardevBackend *backend,
722 ChardevReturn *ret, Error **errp)
6f97dba0 723{
130257dc 724 ChardevMux *mux = backend->u.mux;
3c0e5a4a 725 CharDriverState *chr, *drv;
6f97dba0 726 MuxDriver *d;
d0d7708b 727 ChardevCommon *common = qapi_ChardevMux_base(backend->u.mux);
6f97dba0 728
3c0e5a4a
PB		 729 drv = qemu_chr_find(mux->chardev);
730 if (drv == NULL) {
731 error_setg(errp, "mux: base chardev %s not found", mux->chardev);
732 return NULL;
733 }
734
d0d7708b
DB		 735 chr = qemu_chr_alloc(common, errp);
736 if (!chr) {
737 return NULL;
738 }
2d528d45 739 d = g_new0(MuxDriver, 1);
6f97dba0
AL		 740
741 chr->opaque = d;
742 d->drv = drv;
799f1f23 743 d->focus = -1;
6f97dba0
AL		 744 chr->chr_write = mux_chr_write;
745 chr->chr_update_read_handler = mux_chr_update_read_handler;
746 chr->chr_accept_input = mux_chr_accept_input;
7c32c4fe 747 /* Frontend guest-open / -close notification is not support with muxes */
574b711a 748 chr->chr_set_fe_open = NULL;
3f0838ab
KB		 749 if (drv->chr_add_watch) {
750 chr->chr_add_watch = mux_chr_add_watch;
751 }
7b7ab18d
MR		 752 /* only default to opened state if we've realized the initial
753 * set of muxes
754 */
755 chr->explicit_be_open = muxes_realized ? 0 : 1;
756 chr->is_mux = 1;
73cdf3f2 757
6f97dba0
AL		 758 return chr;
759}
760
761
96c63847
AL		 762typedef struct IOWatchPoll
763{
d185c094
PB		 764 GSource parent;
765
9894dc0c 766 QIOChannel *ioc;
96c63847 767 GSource *src;
96c63847
AL		 768
769 IOCanReadHandler *fd_can_read;
1e885b25 770 GSourceFunc fd_read;
96c63847 771 void *opaque;
96c63847
AL		 772} IOWatchPoll;
773
96c63847
AL		 774static IOWatchPoll *io_watch_poll_from_source(GSource *source)
775{
d185c094 776 return container_of(source, IOWatchPoll, parent);
96c63847
AL		 777}
778
779static gboolean io_watch_poll_prepare(GSource *source, gint *timeout_)
780{
781 IOWatchPoll *iwp = io_watch_poll_from_source(source);
d185c094 782 bool now_active = iwp->fd_can_read(iwp->opaque) > 0;
1e885b25 783 bool was_active = iwp->src != NULL;
d185c094 784 if (was_active == now_active) {
96c63847
AL		 785 return FALSE;
786 }
787
d185c094 788 if (now_active) {
9894dc0c
DB		 789 iwp->src = qio_channel_create_watch(
790 iwp->ioc, G_IO_IN | G_IO_ERR | G_IO_HUP | G_IO_NVAL);
1e885b25 791 g_source_set_callback(iwp->src, iwp->fd_read, iwp->opaque, NULL);
d185c094
PB		 792 g_source_attach(iwp->src, NULL);
793 } else {
1e885b25
PB		 794 g_source_destroy(iwp->src);
795 g_source_unref(iwp->src);
796 iwp->src = NULL;
d185c094
PB		 797 }
798 return FALSE;
96c63847
AL		 799}
800
801static gboolean io_watch_poll_check(GSource *source)
802{
d185c094 803 return FALSE;
96c63847
AL		 804}
805
806static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
807 gpointer user_data)
808{
d185c094 809 abort();
96c63847
AL		 810}
811
812static void io_watch_poll_finalize(GSource *source)
813{
2b316774
PB		 814 /* Due to a glib bug, removing the last reference to a source
815 * inside a finalize callback causes recursive locking (and a
816 * deadlock). This is not a problem inside other callbacks,
817 * including dispatch callbacks, so we call io_remove_watch_poll
818 * to remove this source. At this point, iwp->src must
819 * be NULL, or we would leak it.
820 *
821 * This would be solved much more elegantly by child sources,
822 * but we support older glib versions that do not have them.
823 */
96c63847 824 IOWatchPoll *iwp = io_watch_poll_from_source(source);
2b316774 825 assert(iwp->src == NULL);
96c63847
AL		 826}
827
828static GSourceFuncs io_watch_poll_funcs = {
829 .prepare = io_watch_poll_prepare,
830 .check = io_watch_poll_check,
831 .dispatch = io_watch_poll_dispatch,
832 .finalize = io_watch_poll_finalize,
833};
834
835/* Can only be used for read */
9894dc0c 836static guint io_add_watch_poll(QIOChannel *ioc,
96c63847 837 IOCanReadHandler *fd_can_read,
9894dc0c 838 QIOChannelFunc fd_read,
96c63847
AL		 839 gpointer user_data)
840{
841 IOWatchPoll *iwp;
0ca5aa4f 842 int tag;
96c63847 843
d185c094 844 iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs, sizeof(IOWatchPoll));
96c63847
AL		 845 iwp->fd_can_read = fd_can_read;
846 iwp->opaque = user_data;
9894dc0c 847 iwp->ioc = ioc;
1e885b25
PB		 848 iwp->fd_read = (GSourceFunc) fd_read;
849 iwp->src = NULL;
96c63847 850
0ca5aa4f
PB		 851 tag = g_source_attach(&iwp->parent, NULL);
852 g_source_unref(&iwp->parent);
853 return tag;
96c63847
AL		 854}
855
2b316774
PB		 856static void io_remove_watch_poll(guint tag)
857{
858 GSource *source;
859 IOWatchPoll *iwp;
860
861 g_return_if_fail (tag > 0);
862
863 source = g_main_context_find_source_by_id(NULL, tag);
864 g_return_if_fail (source != NULL);
865
866 iwp = io_watch_poll_from_source(source);
867 if (iwp->src) {
868 g_source_destroy(iwp->src);
869 g_source_unref(iwp->src);
870 iwp->src = NULL;
871 }
872 g_source_destroy(&iwp->parent);
873}
874
26da70c7
AS		 875static void remove_fd_in_watch(CharDriverState *chr)
876{
877 if (chr->fd_in_tag) {
878 io_remove_watch_poll(chr->fd_in_tag);
879 chr->fd_in_tag = 0;
880 }
881}
882
96c63847 883
9894dc0c
DB		 884static int io_channel_send_full(QIOChannel *ioc,
885 const void *buf, size_t len,
886 int *fds, size_t nfds)
76a9644b 887{
9894dc0c 888 size_t offset = 0;
76a9644b 889
9894dc0c
DB		 890 while (offset < len) {
891 ssize_t ret = 0;
892 struct iovec iov = { .iov_base = (char *)buf + offset,
893 .iov_len = len - offset };
894
895 ret = qio_channel_writev_full(
896 ioc, &iov, 1,
897 fds, nfds, NULL);
898 if (ret == QIO_CHANNEL_ERR_BLOCK) {
9894dc0c
DB		 899 if (offset) {
900 return offset;
901 }
76a9644b 902
e046fb44
DB		 903 errno = EAGAIN;
904 return -1;
905 } else if (ret < 0) {
9894dc0c
DB		 906 errno = EINVAL;
907 return -1;
908 }
76a9644b 909
9894dc0c
DB		 910 offset += ret;
911 }
76a9644b 912
9894dc0c 913 return offset;
76a9644b
AL		 914}
915
9894dc0c 916
0ff0fad2 917#ifndef _WIN32
9894dc0c 918static int io_channel_send(QIOChannel *ioc, const void *buf, size_t len)
96c63847 919{
9894dc0c 920 return io_channel_send_full(ioc, buf, len, NULL, 0);
96c63847 921}
96c63847 922
44ab9ed4 923
a29753f8
AL		 924typedef struct FDCharDriver {
925 CharDriverState *chr;
9894dc0c 926 QIOChannel *ioc_in, *ioc_out;
6f97dba0
AL		 927 int max_size;
928} FDCharDriver;
929
9005b2a7 930/* Called with chr_write_lock held. */
6f97dba0
AL		 931static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
932{
933 FDCharDriver *s = chr->opaque;
a29753f8 934
9894dc0c 935 return io_channel_send(s->ioc_out, buf, len);
6f97dba0
AL		 936}
937
9894dc0c 938static gboolean fd_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 939{
940 CharDriverState *chr = opaque;
941 FDCharDriver *s = chr->opaque;
a29753f8 942 int len;
9bd7854e 943 uint8_t buf[READ_BUF_LEN];
9894dc0c 944 ssize_t ret;
6f97dba0
AL		 945
946 len = sizeof(buf);
a29753f8 947 if (len > s->max_size) {
6f97dba0 948 len = s->max_size;
a29753f8
AL		 949 }
950 if (len == 0) {
cdbf6e16 951 return TRUE;
a29753f8
AL		 952 }
953
9894dc0c
DB		 954 ret = qio_channel_read(
955 chan, (gchar *)buf, len, NULL);
956 if (ret == 0) {
26da70c7 957 remove_fd_in_watch(chr);
a425d23f 958 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
a29753f8 959 return FALSE;
6f97dba0 960 }
9894dc0c
DB		 961 if (ret > 0) {
962 qemu_chr_be_write(chr, buf, ret);
6f97dba0 963 }
a29753f8
AL		 964
965 return TRUE;
966}
967
968static int fd_chr_read_poll(void *opaque)
969{
970 CharDriverState *chr = opaque;
971 FDCharDriver *s = chr->opaque;
972
973 s->max_size = qemu_chr_be_can_write(chr);
974 return s->max_size;
6f97dba0
AL		 975}
976
23673ca7
AL		 977static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
978{
979 FDCharDriver *s = chr->opaque;
9894dc0c 980 return qio_channel_create_watch(s->ioc_out, cond);
23673ca7
AL		 981}
982
6f97dba0
AL		 983static void fd_chr_update_read_handler(CharDriverState *chr)
984{
985 FDCharDriver *s = chr->opaque;
986
26da70c7 987 remove_fd_in_watch(chr);
9894dc0c
DB		 988 if (s->ioc_in) {
989 chr->fd_in_tag = io_add_watch_poll(s->ioc_in,
990 fd_chr_read_poll,
7ba9addc 991 fd_chr_read, chr);
6f97dba0
AL		 992 }
993}
994
995static void fd_chr_close(struct CharDriverState *chr)
996{
997 FDCharDriver *s = chr->opaque;
998
26da70c7 999 remove_fd_in_watch(chr);
9894dc0c
DB		 1000 if (s->ioc_in) {
1001 object_unref(OBJECT(s->ioc_in));
a29753f8 1002 }
9894dc0c
DB		 1003 if (s->ioc_out) {
1004 object_unref(OBJECT(s->ioc_out));
6f97dba0
AL		 1005 }
1006
7267c094 1007 g_free(s);
a425d23f 1008 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1009}
1010
1011/* open a character device to a unix fd */
d0d7708b
DB		 1012static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out,
1013 ChardevCommon *backend, Error **errp)
6f97dba0
AL		 1014{
1015 CharDriverState *chr;
1016 FDCharDriver *s;
1017
d0d7708b
DB		 1018 chr = qemu_chr_alloc(backend, errp);
1019 if (!chr) {
1020 return NULL;
1021 }
2d528d45 1022 s = g_new0(FDCharDriver, 1);
9894dc0c
DB		 1023 s->ioc_in = QIO_CHANNEL(qio_channel_file_new_fd(fd_in));
1024 s->ioc_out = QIO_CHANNEL(qio_channel_file_new_fd(fd_out));
4ff12bdb 1025 qemu_set_nonblock(fd_out);
a29753f8 1026 s->chr = chr;
6f97dba0 1027 chr->opaque = s;
23673ca7 1028 chr->chr_add_watch = fd_chr_add_watch;
6f97dba0
AL		 1029 chr->chr_write = fd_chr_write;
1030 chr->chr_update_read_handler = fd_chr_update_read_handler;
1031 chr->chr_close = fd_chr_close;
1032
6f97dba0
AL		 1033 return chr;
1034}
1035
20cbe7a2
PB		 1036static CharDriverState *qemu_chr_open_pipe(const char *id,
1037 ChardevBackend *backend,
1038 ChardevReturn *ret,
1039 Error **errp)
6f97dba0 1040{
130257dc 1041 ChardevHostdev *opts = backend->u.pipe;
6f97dba0 1042 int fd_in, fd_out;
0ff0fad2
DB		 1043 char *filename_in;
1044 char *filename_out;
548cbb36 1045 const char *filename = opts->device;
d0d7708b 1046 ChardevCommon *common = qapi_ChardevHostdev_base(backend->u.pipe);
7d31544f 1047
0ff0fad2
DB		 1048
1049 filename_in = g_strdup_printf("%s.in", filename);
1050 filename_out = g_strdup_printf("%s.out", filename);
40ff6d7e
KW		 1051 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
1052 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
0ff0fad2
DB		 1053 g_free(filename_in);
1054 g_free(filename_out);
6f97dba0
AL		 1055 if (fd_in < 0 || fd_out < 0) {
1056 if (fd_in >= 0)
1057 close(fd_in);
1058 if (fd_out >= 0)
1059 close(fd_out);
b181e047 1060 TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
a89dd6c3 1061 if (fd_in < 0) {
20cbe7a2 1062 error_setg_file_open(errp, errno, filename);
1f51470d 1063 return NULL;
a89dd6c3 1064 }
6f97dba0 1065 }
d0d7708b 1066 return qemu_chr_open_fd(fd_in, fd_out, common, errp);
6f97dba0
AL		 1067}
1068
6f97dba0
AL		 1069/* init terminal so that we can grab keys */
1070static struct termios oldtty;
1071static int old_fd0_flags;
c88930a6 1072static bool stdio_in_use;
bb002513 1073static bool stdio_allow_signal;
e76d4420
GH		 1074static bool stdio_echo_state;
1075
1076static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo);
6f97dba0
AL		 1077
1078static void term_exit(void)
1079{
1080 tcsetattr (0, TCSANOW, &oldtty);
1081 fcntl(0, F_SETFL, old_fd0_flags);
1082}
1083
e76d4420
GH		 1084static void term_stdio_handler(int sig)
1085{
1086 /* restore echo after resume from suspend. */
1087 qemu_chr_set_echo_stdio(NULL, stdio_echo_state);
1088}
1089
bb002513 1090static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
6f97dba0
AL		 1091{
1092 struct termios tty;
1093
e76d4420 1094 stdio_echo_state = echo;
0369364b 1095 tty = oldtty;
bb002513
PB		 1096 if (!echo) {
1097 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
6f97dba0 1098 |INLCR|IGNCR|ICRNL|IXON);
bb002513
PB		 1099 tty.c_oflag |= OPOST;
1100 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
1101 tty.c_cflag &= ~(CSIZE|PARENB);
1102 tty.c_cflag |= CS8;
1103 tty.c_cc[VMIN] = 1;
1104 tty.c_cc[VTIME] = 0;
1105 }
bb002513 1106 if (!stdio_allow_signal)
6f97dba0 1107 tty.c_lflag &= ~ISIG;
6f97dba0
AL		 1108
1109 tcsetattr (0, TCSANOW, &tty);
6f97dba0
AL		 1110}
1111
1112static void qemu_chr_close_stdio(struct CharDriverState *chr)
1113{
1114 term_exit();
6f97dba0
AL		 1115 fd_chr_close(chr);
1116}
1117
8c84b25d
PB		 1118static CharDriverState *qemu_chr_open_stdio(const char *id,
1119 ChardevBackend *backend,
1120 ChardevReturn *ret,
1121 Error **errp)
6f97dba0 1122{
130257dc 1123 ChardevStdio *opts = backend->u.stdio;
6f97dba0 1124 CharDriverState *chr;
e76d4420 1125 struct sigaction act;
d0d7708b 1126 ChardevCommon *common = qapi_ChardevStdio_base(backend->u.stdio);
6f97dba0 1127
ab51b1d5 1128 if (is_daemonized()) {
8c84b25d 1129 error_setg(errp, "cannot use stdio with -daemonize");
ab51b1d5
MT		 1130 return NULL;
1131 }
c88930a6
LL		 1132
1133 if (stdio_in_use) {
8c84b25d
PB		 1134 error_setg(errp, "cannot use stdio by multiple character devices");
1135 return NULL;
c88930a6
LL		 1136 }
1137
1138 stdio_in_use = true;
ed7a1540 1139 old_fd0_flags = fcntl(0, F_GETFL);
c88930a6 1140 tcgetattr(0, &oldtty);
4ff12bdb 1141 qemu_set_nonblock(0);
ed7a1540 1142 atexit(term_exit);
0369364b 1143
e76d4420
GH		 1144 memset(&act, 0, sizeof(act));
1145 act.sa_handler = term_stdio_handler;
1146 sigaction(SIGCONT, &act, NULL);
1147
d0d7708b 1148 chr = qemu_chr_open_fd(0, 1, common, errp);
6f97dba0 1149 chr->chr_close = qemu_chr_close_stdio;
bb002513 1150 chr->chr_set_echo = qemu_chr_set_echo_stdio;
7c358031
GH		 1151 if (opts->has_signal) {
1152 stdio_allow_signal = opts->signal;
1153 }
15f31519 1154 qemu_chr_fe_set_echo(chr, false);
6f97dba0 1155
1f51470d 1156 return chr;
6f97dba0
AL		 1157}
1158
6f97dba0 1159#if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
a167ba50
AJ		 1160 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
1161 || defined(__GLIBC__)
6f97dba0 1162
d809ab95
PB		 1163#define HAVE_CHARDEV_SERIAL 1
1164#define HAVE_CHARDEV_PTY 1
e551498e 1165
6f97dba0 1166typedef struct {
9894dc0c 1167 QIOChannel *ioc;
6f97dba0 1168 int read_bytes;
9005b2a7
PB		 1169
1170 /* Protected by the CharDriverState chr_write_lock. */
1171 int connected;
8aa33caf 1172 guint timer_tag;
7b3621f4 1173 guint open_tag;
6f97dba0
AL		 1174} PtyCharDriver;
1175
9005b2a7 1176static void pty_chr_update_read_handler_locked(CharDriverState *chr);
6f97dba0
AL		 1177static void pty_chr_state(CharDriverState *chr, int connected);
1178
8aa33caf
AL		 1179static gboolean pty_chr_timer(gpointer opaque)
1180{
1181 struct CharDriverState *chr = opaque;
1182 PtyCharDriver *s = chr->opaque;
1183
9005b2a7 1184 qemu_mutex_lock(&chr->chr_write_lock);
79f20075 1185 s->timer_tag = 0;
7b3621f4 1186 s->open_tag = 0;
b0d768c3
GH		 1187 if (!s->connected) {
1188 /* Next poll ... */
9005b2a7 1189 pty_chr_update_read_handler_locked(chr);
b0d768c3 1190 }
9005b2a7 1191 qemu_mutex_unlock(&chr->chr_write_lock);
8aa33caf
AL		 1192 return FALSE;
1193}
1194
9005b2a7 1195/* Called with chr_write_lock held. */
8aa33caf
AL		 1196static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
1197{
1198 PtyCharDriver *s = chr->opaque;
1199
1200 if (s->timer_tag) {
1201 g_source_remove(s->timer_tag);
1202 s->timer_tag = 0;
1203 }
1204
1205 if (ms == 1000) {
1206 s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
1207 } else {
1208 s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
1209 }
1210}
1211
9005b2a7
PB		 1212/* Called with chr_write_lock held. */
1213static void pty_chr_update_read_handler_locked(CharDriverState *chr)
1bb7fe72
PB		 1214{
1215 PtyCharDriver *s = chr->opaque;
1216 GPollFD pfd;
c1f24489 1217 int rc;
9894dc0c 1218 QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc);
1bb7fe72 1219
9894dc0c 1220 pfd.fd = fioc->fd;
1bb7fe72
PB		 1221 pfd.events = G_IO_OUT;
1222 pfd.revents = 0;
c1f24489
PB		 1223 do {
1224 rc = g_poll(&pfd, 1, 0);
1225 } while (rc == -1 && errno == EINTR);
1226 assert(rc >= 0);
1227
1bb7fe72
PB		 1228 if (pfd.revents & G_IO_HUP) {
1229 pty_chr_state(chr, 0);
1230 } else {
1231 pty_chr_state(chr, 1);
1232 }
1233}
1234
9005b2a7
PB		 1235static void pty_chr_update_read_handler(CharDriverState *chr)
1236{
1237 qemu_mutex_lock(&chr->chr_write_lock);
1238 pty_chr_update_read_handler_locked(chr);
1239 qemu_mutex_unlock(&chr->chr_write_lock);
1240}
1241
1242/* Called with chr_write_lock held. */
6f97dba0
AL		 1243static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1244{
1245 PtyCharDriver *s = chr->opaque;
1246
1247 if (!s->connected) {
1248 /* guest sends data, check for (re-)connect */
9005b2a7 1249 pty_chr_update_read_handler_locked(chr);
cf7330c7
ST		 1250 if (!s->connected) {
1251 return 0;
1252 }
6f97dba0 1253 }
9894dc0c 1254 return io_channel_send(s->ioc, buf, len);
6f97dba0
AL		 1255}
1256
e6a87ed8
AL		 1257static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1258{
1259 PtyCharDriver *s = chr->opaque;
62c339c5
PB		 1260 if (!s->connected) {
1261 return NULL;
1262 }
9894dc0c 1263 return qio_channel_create_watch(s->ioc, cond);
e6a87ed8
AL		 1264}
1265
6f97dba0
AL		 1266static int pty_chr_read_poll(void *opaque)
1267{
1268 CharDriverState *chr = opaque;
1269 PtyCharDriver *s = chr->opaque;
1270
909cda12 1271 s->read_bytes = qemu_chr_be_can_write(chr);
6f97dba0
AL		 1272 return s->read_bytes;
1273}
1274
9894dc0c 1275static gboolean pty_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 1276{
1277 CharDriverState *chr = opaque;
1278 PtyCharDriver *s = chr->opaque;
9894dc0c 1279 gsize len;
9bd7854e 1280 uint8_t buf[READ_BUF_LEN];
9894dc0c 1281 ssize_t ret;
6f97dba0
AL		 1282
1283 len = sizeof(buf);
1284 if (len > s->read_bytes)
1285 len = s->read_bytes;
cdbf6e16
PB		 1286 if (len == 0) {
1287 return TRUE;
1288 }
9894dc0c
DB		 1289 ret = qio_channel_read(s->ioc, (char *)buf, len, NULL);
1290 if (ret <= 0) {
6f97dba0 1291 pty_chr_state(chr, 0);
093d3a20
AL		 1292 return FALSE;
1293 } else {
6f97dba0 1294 pty_chr_state(chr, 1);
9894dc0c 1295 qemu_chr_be_write(chr, buf, ret);
6f97dba0 1296 }
093d3a20 1297 return TRUE;
6f97dba0
AL		 1298}
1299
7b3621f4
PB		 1300static gboolean qemu_chr_be_generic_open_func(gpointer opaque)
1301{
1302 CharDriverState *chr = opaque;
1303 PtyCharDriver *s = chr->opaque;
1304
1305 s->open_tag = 0;
1306 qemu_chr_be_generic_open(chr);
1307 return FALSE;
1308}
1309
9005b2a7 1310/* Called with chr_write_lock held. */
6f97dba0
AL		 1311static void pty_chr_state(CharDriverState *chr, int connected)
1312{
1313 PtyCharDriver *s = chr->opaque;
1314
1315 if (!connected) {
7b3621f4
PB		 1316 if (s->open_tag) {
1317 g_source_remove(s->open_tag);
1318 s->open_tag = 0;
1319 }
26da70c7 1320 remove_fd_in_watch(chr);
6f97dba0 1321 s->connected = 0;
6f97dba0
AL		 1322 /* (re-)connect poll interval for idle guests: once per second.
1323 * We check more frequently in case the guests sends data to
1324 * the virtual device linked to our pty. */
8aa33caf 1325 pty_chr_rearm_timer(chr, 1000);
6f97dba0 1326 } else {
85a67692
PB		 1327 if (s->timer_tag) {
1328 g_source_remove(s->timer_tag);
1329 s->timer_tag = 0;
1330 }
1331 if (!s->connected) {
7b3621f4 1332 g_assert(s->open_tag == 0);
85a67692 1333 s->connected = 1;
7b3621f4 1334 s->open_tag = g_idle_add(qemu_chr_be_generic_open_func, chr);
ac1b84dd
GH		 1335 }
1336 if (!chr->fd_in_tag) {
9894dc0c
DB		 1337 chr->fd_in_tag = io_add_watch_poll(s->ioc,
1338 pty_chr_read_poll,
7ba9addc 1339 pty_chr_read, chr);
85a67692 1340 }
6f97dba0
AL		 1341 }
1342}
1343
6f97dba0
AL		 1344static void pty_chr_close(struct CharDriverState *chr)
1345{
1346 PtyCharDriver *s = chr->opaque;
1347
7b3621f4
PB		 1348 qemu_mutex_lock(&chr->chr_write_lock);
1349 pty_chr_state(chr, 0);
9894dc0c 1350 object_unref(OBJECT(s->ioc));
8aa33caf
AL		 1351 if (s->timer_tag) {
1352 g_source_remove(s->timer_tag);
910b6368 1353 s->timer_tag = 0;
8aa33caf 1354 }
7b3621f4 1355 qemu_mutex_unlock(&chr->chr_write_lock);
7267c094 1356 g_free(s);
a425d23f 1357 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1358}
1359
e68c5958 1360static CharDriverState *qemu_chr_open_pty(const char *id,
c2e75a43
PB		 1361 ChardevBackend *backend,
1362 ChardevReturn *ret,
1363 Error **errp)
6f97dba0
AL		 1364{
1365 CharDriverState *chr;
1366 PtyCharDriver *s;
e68c5958 1367 int master_fd, slave_fd;
6f97dba0 1368 char pty_name[PATH_MAX];
d0d7708b 1369 ChardevCommon *common = qapi_ChardevDummy_base(backend->u.pty);
6f97dba0 1370
4efeabbb
MT		 1371 master_fd = qemu_openpty_raw(&slave_fd, pty_name);
1372 if (master_fd < 0) {
c2e75a43 1373 error_setg_errno(errp, errno, "Failed to create PTY");
1f51470d 1374 return NULL;
6f97dba0
AL		 1375 }
1376
837a183f 1377 close(slave_fd);
fac6688a 1378 qemu_set_nonblock(master_fd);
6f97dba0 1379
d0d7708b
DB		 1380 chr = qemu_chr_alloc(common, errp);
1381 if (!chr) {
1382 close(master_fd);
1383 return NULL;
1384 }
a4e26048 1385
4efeabbb
MT		 1386 chr->filename = g_strdup_printf("pty:%s", pty_name);
1387 ret->pty = g_strdup(pty_name);
e68c5958 1388 ret->has_pty = true;
58650218 1389
e68c5958 1390 fprintf(stderr, "char device redirected to %s (label %s)\n",
4efeabbb 1391 pty_name, id);
6f97dba0 1392
2d528d45 1393 s = g_new0(PtyCharDriver, 1);
6f97dba0
AL		 1394 chr->opaque = s;
1395 chr->chr_write = pty_chr_write;
1396 chr->chr_update_read_handler = pty_chr_update_read_handler;
1397 chr->chr_close = pty_chr_close;
e6a87ed8 1398 chr->chr_add_watch = pty_chr_add_watch;
bd5c51ee 1399 chr->explicit_be_open = true;
6f97dba0 1400
9894dc0c 1401 s->ioc = QIO_CHANNEL(qio_channel_file_new_fd(master_fd));
8aa33caf 1402 s->timer_tag = 0;
6f97dba0 1403
1f51470d 1404 return chr;
6f97dba0
AL		 1405}
1406
1407static void tty_serial_init(int fd, int speed,
1408 int parity, int data_bits, int stop_bits)
1409{
1410 struct termios tty;
1411 speed_t spd;
1412
1413#if 0
1414 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1415 speed, parity, data_bits, stop_bits);
1416#endif
1417 tcgetattr (fd, &tty);
1418
45eea13b
SW		 1419#define check_speed(val) if (speed <= val) { spd = B##val; break; }
1420 speed = speed * 10 / 11;
1421 do {
1422 check_speed(50);
1423 check_speed(75);
1424 check_speed(110);
1425 check_speed(134);
1426 check_speed(150);
1427 check_speed(200);
1428 check_speed(300);
1429 check_speed(600);
1430 check_speed(1200);
1431 check_speed(1800);
1432 check_speed(2400);
1433 check_speed(4800);
1434 check_speed(9600);
1435 check_speed(19200);
1436 check_speed(38400);
1437 /* Non-Posix values follow. They may be unsupported on some systems. */
1438 check_speed(57600);
1439 check_speed(115200);
1440#ifdef B230400
1441 check_speed(230400);
1442#endif
1443#ifdef B460800
1444 check_speed(460800);
1445#endif
1446#ifdef B500000
1447 check_speed(500000);
1448#endif
1449#ifdef B576000
1450 check_speed(576000);
1451#endif
1452#ifdef B921600
1453 check_speed(921600);
1454#endif
1455#ifdef B1000000
1456 check_speed(1000000);
1457#endif
1458#ifdef B1152000
1459 check_speed(1152000);
1460#endif
1461#ifdef B1500000
1462 check_speed(1500000);
1463#endif
1464#ifdef B2000000
1465 check_speed(2000000);
1466#endif
1467#ifdef B2500000
1468 check_speed(2500000);
1469#endif
1470#ifdef B3000000
1471 check_speed(3000000);
1472#endif
1473#ifdef B3500000
1474 check_speed(3500000);
1475#endif
1476#ifdef B4000000
1477 check_speed(4000000);
1478#endif
6f97dba0 1479 spd = B115200;
45eea13b 1480 } while (0);
6f97dba0
AL		 1481
1482 cfsetispeed(&tty, spd);
1483 cfsetospeed(&tty, spd);
1484
1485 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1486 |INLCR|IGNCR|ICRNL|IXON);
1487 tty.c_oflag |= OPOST;
1488 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1489 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1490 switch(data_bits) {
1491 default:
1492 case 8:
1493 tty.c_cflag |= CS8;
1494 break;
1495 case 7:
1496 tty.c_cflag |= CS7;
1497 break;
1498 case 6:
1499 tty.c_cflag |= CS6;
1500 break;
1501 case 5:
1502 tty.c_cflag |= CS5;
1503 break;
1504 }
1505 switch(parity) {
1506 default:
1507 case 'N':
1508 break;
1509 case 'E':
1510 tty.c_cflag |= PARENB;
1511 break;
1512 case 'O':
1513 tty.c_cflag |= PARENB | PARODD;
1514 break;
1515 }
1516 if (stop_bits == 2)
1517 tty.c_cflag |= CSTOPB;
1518
1519 tcsetattr (fd, TCSANOW, &tty);
1520}
1521
1522static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1523{
1524 FDCharDriver *s = chr->opaque;
9894dc0c 1525 QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc_in);
6f97dba0
AL		 1526
1527 switch(cmd) {
1528 case CHR_IOCTL_SERIAL_SET_PARAMS:
1529 {
1530 QEMUSerialSetParams *ssp = arg;
9894dc0c 1531 tty_serial_init(fioc->fd,
a29753f8 1532 ssp->speed, ssp->parity,
6f97dba0
AL		 1533 ssp->data_bits, ssp->stop_bits);
1534 }
1535 break;
1536 case CHR_IOCTL_SERIAL_SET_BREAK:
1537 {
1538 int enable = *(int *)arg;
a29753f8 1539 if (enable) {
9894dc0c 1540 tcsendbreak(fioc->fd, 1);
a29753f8 1541 }
6f97dba0
AL		 1542 }
1543 break;
1544 case CHR_IOCTL_SERIAL_GET_TIOCM:
1545 {
1546 int sarg = 0;
1547 int *targ = (int *)arg;
9894dc0c 1548 ioctl(fioc->fd, TIOCMGET, &sarg);
6f97dba0 1549 *targ = 0;
b4abdfa4 1550 if (sarg & TIOCM_CTS)
6f97dba0 1551 *targ |= CHR_TIOCM_CTS;
b4abdfa4 1552 if (sarg & TIOCM_CAR)
6f97dba0 1553 *targ |= CHR_TIOCM_CAR;
b4abdfa4 1554 if (sarg & TIOCM_DSR)
6f97dba0 1555 *targ |= CHR_TIOCM_DSR;
b4abdfa4 1556 if (sarg & TIOCM_RI)
6f97dba0 1557 *targ |= CHR_TIOCM_RI;
b4abdfa4 1558 if (sarg & TIOCM_DTR)
6f97dba0 1559 *targ |= CHR_TIOCM_DTR;
b4abdfa4 1560 if (sarg & TIOCM_RTS)
6f97dba0
AL		 1561 *targ |= CHR_TIOCM_RTS;
1562 }
1563 break;
1564 case CHR_IOCTL_SERIAL_SET_TIOCM:
1565 {
1566 int sarg = *(int *)arg;
1567 int targ = 0;
9894dc0c 1568 ioctl(fioc->fd, TIOCMGET, &targ);
b4abdfa4
AJ		 1569 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1570 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1571 if (sarg & CHR_TIOCM_CTS)
1572 targ |= TIOCM_CTS;
1573 if (sarg & CHR_TIOCM_CAR)
1574 targ |= TIOCM_CAR;
1575 if (sarg & CHR_TIOCM_DSR)
1576 targ |= TIOCM_DSR;
1577 if (sarg & CHR_TIOCM_RI)
1578 targ |= TIOCM_RI;
1579 if (sarg & CHR_TIOCM_DTR)
6f97dba0 1580 targ |= TIOCM_DTR;
b4abdfa4 1581 if (sarg & CHR_TIOCM_RTS)
6f97dba0 1582 targ |= TIOCM_RTS;
9894dc0c 1583 ioctl(fioc->fd, TIOCMSET, &targ);
6f97dba0
AL		 1584 }
1585 break;
1586 default:
1587 return -ENOTSUP;
1588 }
1589 return 0;
1590}
1591
4266a134
DA		 1592static void qemu_chr_close_tty(CharDriverState *chr)
1593{
4266a134 1594 fd_chr_close(chr);
4266a134
DA		 1595}
1596
d0d7708b
DB		 1597static CharDriverState *qemu_chr_open_tty_fd(int fd,
1598 ChardevCommon *backend,
1599 Error **errp)
d59044ef
GH		 1600{
1601 CharDriverState *chr;
1602
1603 tty_serial_init(fd, 115200, 'N', 8, 1);
d0d7708b 1604 chr = qemu_chr_open_fd(fd, fd, backend, errp);
d59044ef
GH		 1605 chr->chr_ioctl = tty_serial_ioctl;
1606 chr->chr_close = qemu_chr_close_tty;
1607 return chr;
1608}
6f97dba0
AL		 1609#endif /* __linux__ || __sun__ */
1610
1611#if defined(__linux__)
e551498e
GH		 1612
1613#define HAVE_CHARDEV_PARPORT 1
1614
6f97dba0
AL		 1615typedef struct {
1616 int fd;
1617 int mode;
1618} ParallelCharDriver;
1619
1620static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1621{
1622 if (s->mode != mode) {
1623 int m = mode;
1624 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1625 return 0;
1626 s->mode = mode;
1627 }
1628 return 1;
1629}
1630
1631static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1632{
1633 ParallelCharDriver *drv = chr->opaque;
1634 int fd = drv->fd;
1635 uint8_t b;
1636
1637 switch(cmd) {
1638 case CHR_IOCTL_PP_READ_DATA:
1639 if (ioctl(fd, PPRDATA, &b) < 0)
1640 return -ENOTSUP;
1641 *(uint8_t *)arg = b;
1642 break;
1643 case CHR_IOCTL_PP_WRITE_DATA:
1644 b = *(uint8_t *)arg;
1645 if (ioctl(fd, PPWDATA, &b) < 0)
1646 return -ENOTSUP;
1647 break;
1648 case CHR_IOCTL_PP_READ_CONTROL:
1649 if (ioctl(fd, PPRCONTROL, &b) < 0)
1650 return -ENOTSUP;
1651 /* Linux gives only the lowest bits, and no way to know data
1652 direction! For better compatibility set the fixed upper
1653 bits. */
1654 *(uint8_t *)arg = b | 0xc0;
1655 break;
1656 case CHR_IOCTL_PP_WRITE_CONTROL:
1657 b = *(uint8_t *)arg;
1658 if (ioctl(fd, PPWCONTROL, &b) < 0)
1659 return -ENOTSUP;
1660 break;
1661 case CHR_IOCTL_PP_READ_STATUS:
1662 if (ioctl(fd, PPRSTATUS, &b) < 0)
1663 return -ENOTSUP;
1664 *(uint8_t *)arg = b;
1665 break;
1666 case CHR_IOCTL_PP_DATA_DIR:
1667 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1668 return -ENOTSUP;
1669 break;
1670 case CHR_IOCTL_PP_EPP_READ_ADDR:
1671 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1672 struct ParallelIOArg *parg = arg;
1673 int n = read(fd, parg->buffer, parg->count);
1674 if (n != parg->count) {
1675 return -EIO;
1676 }
1677 }
1678 break;
1679 case CHR_IOCTL_PP_EPP_READ:
1680 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1681 struct ParallelIOArg *parg = arg;
1682 int n = read(fd, parg->buffer, parg->count);
1683 if (n != parg->count) {
1684 return -EIO;
1685 }
1686 }
1687 break;
1688 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1689 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1690 struct ParallelIOArg *parg = arg;
1691 int n = write(fd, parg->buffer, parg->count);
1692 if (n != parg->count) {
1693 return -EIO;
1694 }
1695 }
1696 break;
1697 case CHR_IOCTL_PP_EPP_WRITE:
1698 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1699 struct ParallelIOArg *parg = arg;
1700 int n = write(fd, parg->buffer, parg->count);
1701 if (n != parg->count) {
1702 return -EIO;
1703 }
1704 }
1705 break;
1706 default:
1707 return -ENOTSUP;
1708 }
1709 return 0;
1710}
1711
1712static void pp_close(CharDriverState *chr)
1713{
1714 ParallelCharDriver *drv = chr->opaque;
1715 int fd = drv->fd;
1716
1717 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1718 ioctl(fd, PPRELEASE);
1719 close(fd);
7267c094 1720 g_free(drv);
a425d23f 1721 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1722}
1723
d0d7708b
DB		 1724static CharDriverState *qemu_chr_open_pp_fd(int fd,
1725 ChardevCommon *backend,
1726 Error **errp)
6f97dba0
AL		 1727{
1728 CharDriverState *chr;
1729 ParallelCharDriver *drv;
6f97dba0
AL		 1730
1731 if (ioctl(fd, PPCLAIM) < 0) {
38bfb1a6 1732 error_setg_errno(errp, errno, "not a parallel port");
6f97dba0 1733 close(fd);
1f51470d 1734 return NULL;
6f97dba0
AL		 1735 }
1736
d0d7708b
DB		 1737 chr = qemu_chr_alloc(backend, errp);
1738 if (!chr) {
1739 return NULL;
1740 }
27ef9cb0
PB		 1741
1742 drv = g_new0(ParallelCharDriver, 1);
1743 chr->opaque = drv;
6f97dba0
AL		 1744 chr->chr_write = null_chr_write;
1745 chr->chr_ioctl = pp_ioctl;
1746 chr->chr_close = pp_close;
27ef9cb0
PB		 1747
1748 drv->fd = fd;
1749 drv->mode = IEEE1284_MODE_COMPAT;
6f97dba0 1750
1f51470d 1751 return chr;
6f97dba0
AL		 1752}
1753#endif /* __linux__ */
1754
a167ba50 1755#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
e551498e
GH		 1756
1757#define HAVE_CHARDEV_PARPORT 1
1758
6972f935
BS		 1759static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1760{
e0efb993 1761 int fd = (int)(intptr_t)chr->opaque;
6972f935
BS		 1762 uint8_t b;
1763
1764 switch(cmd) {
1765 case CHR_IOCTL_PP_READ_DATA:
1766 if (ioctl(fd, PPIGDATA, &b) < 0)
1767 return -ENOTSUP;
1768 *(uint8_t *)arg = b;
1769 break;
1770 case CHR_IOCTL_PP_WRITE_DATA:
1771 b = *(uint8_t *)arg;
1772 if (ioctl(fd, PPISDATA, &b) < 0)
1773 return -ENOTSUP;
1774 break;
1775 case CHR_IOCTL_PP_READ_CONTROL:
1776 if (ioctl(fd, PPIGCTRL, &b) < 0)
1777 return -ENOTSUP;
1778 *(uint8_t *)arg = b;
1779 break;
1780 case CHR_IOCTL_PP_WRITE_CONTROL:
1781 b = *(uint8_t *)arg;
1782 if (ioctl(fd, PPISCTRL, &b) < 0)
1783 return -ENOTSUP;
1784 break;
1785 case CHR_IOCTL_PP_READ_STATUS:
1786 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1787 return -ENOTSUP;
1788 *(uint8_t *)arg = b;
1789 break;
1790 default:
1791 return -ENOTSUP;
1792 }
1793 return 0;
1794}
1795
d0d7708b 1796static CharDriverState *qemu_chr_open_pp_fd(int fd,
0850d49c 1797 ChardevCommon *backend,
d0d7708b 1798 Error **errp)
6972f935
BS		 1799{
1800 CharDriverState *chr;
6972f935 1801
0850d49c 1802 chr = qemu_chr_alloc(backend, errp);
d0d7708b
DB		 1803 if (!chr) {
1804 return NULL;
1805 }
e0efb993 1806 chr->opaque = (void *)(intptr_t)fd;
6972f935
BS		 1807 chr->chr_write = null_chr_write;
1808 chr->chr_ioctl = pp_ioctl;
bd5c51ee 1809 chr->explicit_be_open = true;
1f51470d 1810 return chr;
6972f935
BS		 1811}
1812#endif
1813
6f97dba0
AL		 1814#else /* _WIN32 */
1815
d809ab95
PB		 1816#define HAVE_CHARDEV_SERIAL 1
1817
6f97dba0
AL		 1818typedef struct {
1819 int max_size;
1820 HANDLE hcom, hrecv, hsend;
9005b2a7 1821 OVERLAPPED orecv;
6f97dba0
AL		 1822 BOOL fpipe;
1823 DWORD len;
9005b2a7
PB		 1824
1825 /* Protected by the CharDriverState chr_write_lock. */
1826 OVERLAPPED osend;
6f97dba0
AL		 1827} WinCharState;
1828
db418a0a
FC		 1829typedef struct {
1830 HANDLE hStdIn;
1831 HANDLE hInputReadyEvent;
1832 HANDLE hInputDoneEvent;
1833 HANDLE hInputThread;
1834 uint8_t win_stdio_buf;
1835} WinStdioCharState;
1836
6f97dba0
AL		 1837#define NSENDBUF 2048
1838#define NRECVBUF 2048
1839#define MAXCONNECT 1
1840#define NTIMEOUT 5000
1841
1842static int win_chr_poll(void *opaque);
1843static int win_chr_pipe_poll(void *opaque);
1844
1845static void win_chr_close(CharDriverState *chr)
1846{
1847 WinCharState *s = chr->opaque;
1848
1849 if (s->hsend) {
1850 CloseHandle(s->hsend);
1851 s->hsend = NULL;
1852 }
1853 if (s->hrecv) {
1854 CloseHandle(s->hrecv);
1855 s->hrecv = NULL;
1856 }
1857 if (s->hcom) {
1858 CloseHandle(s->hcom);
1859 s->hcom = NULL;
1860 }
1861 if (s->fpipe)
1862 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1863 else
1864 qemu_del_polling_cb(win_chr_poll, chr);
793cbfb5 1865
a425d23f 1866 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1867}
1868
6511d396 1869static int win_chr_init(CharDriverState *chr, const char *filename, Error **errp)
6f97dba0
AL		 1870{
1871 WinCharState *s = chr->opaque;
1872 COMMCONFIG comcfg;
1873 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1874 COMSTAT comstat;
1875 DWORD size;
1876 DWORD err;
1877
1878 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1879 if (!s->hsend) {
6511d396 1880 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 1881 goto fail;
1882 }
1883 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1884 if (!s->hrecv) {
6511d396 1885 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 1886 goto fail;
1887 }
1888
1889 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1890 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1891 if (s->hcom == INVALID_HANDLE_VALUE) {
6511d396 1892 error_setg(errp, "Failed CreateFile (%lu)", GetLastError());
6f97dba0
AL		 1893 s->hcom = NULL;
1894 goto fail;
1895 }
1896
1897 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
6511d396 1898 error_setg(errp, "Failed SetupComm");
6f97dba0
AL		 1899 goto fail;
1900 }
1901
1902 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1903 size = sizeof(COMMCONFIG);
1904 GetDefaultCommConfig(filename, &comcfg, &size);
1905 comcfg.dcb.DCBlength = sizeof(DCB);
1906 CommConfigDialog(filename, NULL, &comcfg);
1907
1908 if (!SetCommState(s->hcom, &comcfg.dcb)) {
6511d396 1909 error_setg(errp, "Failed SetCommState");
6f97dba0
AL		 1910 goto fail;
1911 }
1912
1913 if (!SetCommMask(s->hcom, EV_ERR)) {
6511d396 1914 error_setg(errp, "Failed SetCommMask");
6f97dba0
AL		 1915 goto fail;
1916 }
1917
1918 cto.ReadIntervalTimeout = MAXDWORD;
1919 if (!SetCommTimeouts(s->hcom, &cto)) {
6511d396 1920 error_setg(errp, "Failed SetCommTimeouts");
6f97dba0
AL		 1921 goto fail;
1922 }
1923
1924 if (!ClearCommError(s->hcom, &err, &comstat)) {
6511d396 1925 error_setg(errp, "Failed ClearCommError");
6f97dba0
AL		 1926 goto fail;
1927 }
1928 qemu_add_polling_cb(win_chr_poll, chr);
1929 return 0;
1930
1931 fail:
1932 win_chr_close(chr);
1933 return -1;
1934}
1935
9005b2a7 1936/* Called with chr_write_lock held. */
6f97dba0
AL		 1937static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1938{
1939 WinCharState *s = chr->opaque;
1940 DWORD len, ret, size, err;
1941
1942 len = len1;
1943 ZeroMemory(&s->osend, sizeof(s->osend));
1944 s->osend.hEvent = s->hsend;
1945 while (len > 0) {
1946 if (s->hsend)
1947 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1948 else
1949 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1950 if (!ret) {
1951 err = GetLastError();
1952 if (err == ERROR_IO_PENDING) {
1953 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1954 if (ret) {
1955 buf += size;
1956 len -= size;
1957 } else {
1958 break;
1959 }
1960 } else {
1961 break;
1962 }
1963 } else {
1964 buf += size;
1965 len -= size;
1966 }
1967 }
1968 return len1 - len;
1969}
1970
1971static int win_chr_read_poll(CharDriverState *chr)
1972{
1973 WinCharState *s = chr->opaque;
1974
909cda12 1975 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 1976 return s->max_size;
1977}
1978
1979static void win_chr_readfile(CharDriverState *chr)
1980{
1981 WinCharState *s = chr->opaque;
1982 int ret, err;
9bd7854e 1983 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 1984 DWORD size;
1985
1986 ZeroMemory(&s->orecv, sizeof(s->orecv));
1987 s->orecv.hEvent = s->hrecv;
1988 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
1989 if (!ret) {
1990 err = GetLastError();
1991 if (err == ERROR_IO_PENDING) {
1992 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
1993 }
1994 }
1995
1996 if (size > 0) {
fa5efccb 1997 qemu_chr_be_write(chr, buf, size);
6f97dba0
AL		 1998 }
1999}
2000
2001static void win_chr_read(CharDriverState *chr)
2002{
2003 WinCharState *s = chr->opaque;
2004
2005 if (s->len > s->max_size)
2006 s->len = s->max_size;
2007 if (s->len == 0)
2008 return;
2009
2010 win_chr_readfile(chr);
2011}
2012
2013static int win_chr_poll(void *opaque)
2014{
2015 CharDriverState *chr = opaque;
2016 WinCharState *s = chr->opaque;
2017 COMSTAT status;
2018 DWORD comerr;
2019
2020 ClearCommError(s->hcom, &comerr, &status);
2021 if (status.cbInQue > 0) {
2022 s->len = status.cbInQue;
2023 win_chr_read_poll(chr);
2024 win_chr_read(chr);
2025 return 1;
2026 }
2027 return 0;
2028}
2029
6511d396 2030static CharDriverState *qemu_chr_open_win_path(const char *filename,
d0d7708b 2031 ChardevCommon *backend,
6511d396 2032 Error **errp)
6f97dba0
AL		 2033{
2034 CharDriverState *chr;
2035 WinCharState *s;
2036
d0d7708b
DB		 2037 chr = qemu_chr_alloc(backend, errp);
2038 if (!chr) {
2039 return NULL;
2040 }
2d528d45 2041 s = g_new0(WinCharState, 1);
6f97dba0
AL		 2042 chr->opaque = s;
2043 chr->chr_write = win_chr_write;
2044 chr->chr_close = win_chr_close;
2045
6511d396 2046 if (win_chr_init(chr, filename, errp) < 0) {
2e02e18b 2047 g_free(s);
d0d7708b 2048 qemu_chr_free_common(chr);
1f51470d 2049 return NULL;
6f97dba0 2050 }
1f51470d 2051 return chr;
6f97dba0
AL		 2052}
2053
2054static int win_chr_pipe_poll(void *opaque)
2055{
2056 CharDriverState *chr = opaque;
2057 WinCharState *s = chr->opaque;
2058 DWORD size;
2059
2060 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
2061 if (size > 0) {
2062 s->len = size;
2063 win_chr_read_poll(chr);
2064 win_chr_read(chr);
2065 return 1;
2066 }
2067 return 0;
2068}
2069
20cbe7a2
PB		 2070static int win_chr_pipe_init(CharDriverState *chr, const char *filename,
2071 Error **errp)
6f97dba0
AL		 2072{
2073 WinCharState *s = chr->opaque;
2074 OVERLAPPED ov;
2075 int ret;
2076 DWORD size;
0ff0fad2 2077 char *openname;
6f97dba0
AL		 2078
2079 s->fpipe = TRUE;
2080
2081 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
2082 if (!s->hsend) {
20cbe7a2 2083 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 2084 goto fail;
2085 }
2086 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
2087 if (!s->hrecv) {
20cbe7a2 2088 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 2089 goto fail;
2090 }
2091
0ff0fad2 2092 openname = g_strdup_printf("\\\\.\\pipe\\%s", filename);
6f97dba0
AL		 2093 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
2094 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
2095 PIPE_WAIT,
2096 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
0ff0fad2 2097 g_free(openname);
6f97dba0 2098 if (s->hcom == INVALID_HANDLE_VALUE) {
20cbe7a2 2099 error_setg(errp, "Failed CreateNamedPipe (%lu)", GetLastError());
6f97dba0
AL		 2100 s->hcom = NULL;
2101 goto fail;
2102 }
2103
2104 ZeroMemory(&ov, sizeof(ov));
2105 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
2106 ret = ConnectNamedPipe(s->hcom, &ov);
2107 if (ret) {
20cbe7a2 2108 error_setg(errp, "Failed ConnectNamedPipe");
6f97dba0
AL		 2109 goto fail;
2110 }
2111
2112 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
2113 if (!ret) {
20cbe7a2 2114 error_setg(errp, "Failed GetOverlappedResult");
6f97dba0
AL		 2115 if (ov.hEvent) {
2116 CloseHandle(ov.hEvent);
2117 ov.hEvent = NULL;
2118 }
2119 goto fail;
2120 }
2121
2122 if (ov.hEvent) {
2123 CloseHandle(ov.hEvent);
2124 ov.hEvent = NULL;
2125 }
2126 qemu_add_polling_cb(win_chr_pipe_poll, chr);
2127 return 0;
2128
2129 fail:
2130 win_chr_close(chr);
2131 return -1;
2132}
2133
2134
20cbe7a2
PB		 2135static CharDriverState *qemu_chr_open_pipe(const char *id,
2136 ChardevBackend *backend,
2137 ChardevReturn *ret,
2138 Error **errp)
6f97dba0 2139{
130257dc 2140 ChardevHostdev *opts = backend->u.pipe;
548cbb36 2141 const char *filename = opts->device;
6f97dba0
AL		 2142 CharDriverState *chr;
2143 WinCharState *s;
d0d7708b 2144 ChardevCommon *common = qapi_ChardevHostdev_base(backend->u.pipe);
6f97dba0 2145
d0d7708b
DB		 2146 chr = qemu_chr_alloc(common, errp);
2147 if (!chr) {
2148 return NULL;
2149 }
2d528d45 2150 s = g_new0(WinCharState, 1);
6f97dba0
AL		 2151 chr->opaque = s;
2152 chr->chr_write = win_chr_write;
2153 chr->chr_close = win_chr_close;
2154
20cbe7a2 2155 if (win_chr_pipe_init(chr, filename, errp) < 0) {
2e02e18b 2156 g_free(s);
d0d7708b 2157 qemu_chr_free_common(chr);
1f51470d 2158 return NULL;
6f97dba0 2159 }
1f51470d 2160 return chr;
6f97dba0
AL		 2161}
2162
d0d7708b
DB		 2163static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out,
2164 ChardevCommon *backend,
2165 Error **errp)
6f97dba0
AL		 2166{
2167 CharDriverState *chr;
2168 WinCharState *s;
2169
d0d7708b
DB		 2170 chr = qemu_chr_alloc(backend, errp);
2171 if (!chr) {
2172 return NULL;
2173 }
2d528d45 2174 s = g_new0(WinCharState, 1);
6f97dba0
AL		 2175 s->hcom = fd_out;
2176 chr->opaque = s;
2177 chr->chr_write = win_chr_write;
1f51470d 2178 return chr;
6f97dba0
AL		 2179}
2180
122e5ed4
PB		 2181static CharDriverState *qemu_chr_open_win_con(const char *id,
2182 ChardevBackend *backend,
2183 ChardevReturn *ret,
2184 Error **errp)
6f97dba0 2185{
d0d7708b
DB		 2186 ChardevCommon *common = qapi_ChardevDummy_base(backend->u.console);
2187 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE),
2188 common, errp);
6f97dba0
AL		 2189}
2190
db418a0a
FC		 2191static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
2192{
2193 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
2194 DWORD dwSize;
2195 int len1;
2196
2197 len1 = len;
2198
2199 while (len1 > 0) {
2200 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
2201 break;
2202 }
2203 buf += dwSize;
2204 len1 -= dwSize;
2205 }
2206
2207 return len - len1;
2208}
2209
2210static void win_stdio_wait_func(void *opaque)
2211{
2212 CharDriverState *chr = opaque;
2213 WinStdioCharState *stdio = chr->opaque;
2214 INPUT_RECORD buf[4];
2215 int ret;
2216 DWORD dwSize;
2217 int i;
2218
dff7424d 2219 ret = ReadConsoleInput(stdio->hStdIn, buf, ARRAY_SIZE(buf), &dwSize);
db418a0a
FC		 2220
2221 if (!ret) {
2222 /* Avoid error storm */
2223 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2224 return;
2225 }
2226
2227 for (i = 0; i < dwSize; i++) {
2228 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
2229
2230 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
2231 int j;
2232 if (kev->uChar.AsciiChar != 0) {
2233 for (j = 0; j < kev->wRepeatCount; j++) {
2234 if (qemu_chr_be_can_write(chr)) {
2235 uint8_t c = kev->uChar.AsciiChar;
2236 qemu_chr_be_write(chr, &c, 1);
2237 }
2238 }
2239 }
2240 }
2241 }
2242}
2243
2244static DWORD WINAPI win_stdio_thread(LPVOID param)
2245{
2246 CharDriverState *chr = param;
2247 WinStdioCharState *stdio = chr->opaque;
2248 int ret;
2249 DWORD dwSize;
2250
2251 while (1) {
2252
2253 /* Wait for one byte */
2254 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
2255
2256 /* Exit in case of error, continue if nothing read */
2257 if (!ret) {
2258 break;
2259 }
2260 if (!dwSize) {
2261 continue;
2262 }
2263
2264 /* Some terminal emulator returns \r\n for Enter, just pass \n */
2265 if (stdio->win_stdio_buf == '\r') {
2266 continue;
2267 }
2268
2269 /* Signal the main thread and wait until the byte was eaten */
2270 if (!SetEvent(stdio->hInputReadyEvent)) {
2271 break;
2272 }
2273 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
2274 != WAIT_OBJECT_0) {
2275 break;
2276 }
2277 }
2278
2279 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2280 return 0;
2281}
2282
2283static void win_stdio_thread_wait_func(void *opaque)
2284{
2285 CharDriverState *chr = opaque;
2286 WinStdioCharState *stdio = chr->opaque;
2287
2288 if (qemu_chr_be_can_write(chr)) {
2289 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
2290 }
2291
2292 SetEvent(stdio->hInputDoneEvent);
2293}
2294
2295static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
2296{
2297 WinStdioCharState *stdio = chr->opaque;
2298 DWORD dwMode = 0;
2299
2300 GetConsoleMode(stdio->hStdIn, &dwMode);
2301
2302 if (echo) {
2303 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
2304 } else {
2305 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
2306 }
2307}
2308
2309static void win_stdio_close(CharDriverState *chr)
2310{
2311 WinStdioCharState *stdio = chr->opaque;
2312
2313 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
2314 CloseHandle(stdio->hInputReadyEvent);
2315 }
2316 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
2317 CloseHandle(stdio->hInputDoneEvent);
2318 }
2319 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
2320 TerminateThread(stdio->hInputThread, 0);
2321 }
2322
2323 g_free(chr->opaque);
2324 g_free(chr);
db418a0a
FC		 2325}
2326
8c84b25d
PB		 2327static CharDriverState *qemu_chr_open_stdio(const char *id,
2328 ChardevBackend *backend,
2329 ChardevReturn *ret,
2330 Error **errp)
db418a0a
FC		 2331{
2332 CharDriverState *chr;
2333 WinStdioCharState *stdio;
2334 DWORD dwMode;
2335 int is_console = 0;
d0d7708b 2336 ChardevCommon *common = qapi_ChardevStdio_base(backend->u.stdio);
db418a0a 2337
d0d7708b
DB		 2338 chr = qemu_chr_alloc(common, errp);
2339 if (!chr) {
2340 return NULL;
2341 }
2d528d45 2342 stdio = g_new0(WinStdioCharState, 1);
db418a0a
FC		 2343
2344 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
2345 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
8c84b25d
PB		 2346 error_setg(errp, "cannot open stdio: invalid handle");
2347 return NULL;
db418a0a
FC		 2348 }
2349
2350 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
2351
2352 chr->opaque = stdio;
2353 chr->chr_write = win_stdio_write;
2354 chr->chr_close = win_stdio_close;
2355
ed7a1540
AL		 2356 if (is_console) {
2357 if (qemu_add_wait_object(stdio->hStdIn,
2358 win_stdio_wait_func, chr)) {
8c84b25d
PB		 2359 error_setg(errp, "qemu_add_wait_object: failed");
2360 goto err1;
ed7a1540
AL		 2361 }
2362 } else {
2363 DWORD dwId;
2364
2365 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2366 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
8c84b25d 2367 if (stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
ed7a1540 2368 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
8c84b25d
PB		 2369 error_setg(errp, "cannot create event");
2370 goto err2;
ed7a1540
AL		 2371 }
2372 if (qemu_add_wait_object(stdio->hInputReadyEvent,
2373 win_stdio_thread_wait_func, chr)) {
8c84b25d
PB		 2374 error_setg(errp, "qemu_add_wait_object: failed");
2375 goto err2;
2376 }
2377 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
2378 chr, 0, &dwId);
2379
2380 if (stdio->hInputThread == INVALID_HANDLE_VALUE) {
2381 error_setg(errp, "cannot create stdio thread");
2382 goto err3;
db418a0a
FC		 2383 }
2384 }
2385
2386 dwMode |= ENABLE_LINE_INPUT;
2387
ed7a1540 2388 if (is_console) {
db418a0a
FC		 2389 /* set the terminal in raw mode */
2390 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2391 dwMode |= ENABLE_PROCESSED_INPUT;
2392 }
2393
2394 SetConsoleMode(stdio->hStdIn, dwMode);
2395
2396 chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
2397 qemu_chr_fe_set_echo(chr, false);
2398
1f51470d 2399 return chr;
8c84b25d
PB		 2400
2401err3:
2402 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2403err2:
2404 CloseHandle(stdio->hInputReadyEvent);
2405 CloseHandle(stdio->hInputDoneEvent);
2406err1:
2407 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2408 return NULL;
db418a0a 2409}
6f97dba0
AL		 2410#endif /* !_WIN32 */
2411
5ab8211b 2412
6f97dba0
AL		 2413/***********************************************************/
2414/* UDP Net console */
2415
2416typedef struct {
9894dc0c 2417 QIOChannel *ioc;
9bd7854e 2418 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2419 int bufcnt;
2420 int bufptr;
2421 int max_size;
2422} NetCharDriver;
2423
9005b2a7 2424/* Called with chr_write_lock held. */
6f97dba0
AL		 2425static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2426{
2427 NetCharDriver *s = chr->opaque;
76a9644b 2428
9894dc0c
DB		 2429 return qio_channel_write(
2430 s->ioc, (const char *)buf, len, NULL);
6f97dba0
AL		 2431}
2432
2433static int udp_chr_read_poll(void *opaque)
2434{
2435 CharDriverState *chr = opaque;
2436 NetCharDriver *s = chr->opaque;
2437
909cda12 2438 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2439
2440 /* If there were any stray characters in the queue process them
2441 * first
2442 */
2443 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
fa5efccb 2444 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
6f97dba0 2445 s->bufptr++;
909cda12 2446 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2447 }
2448 return s->max_size;
2449}
2450
9894dc0c 2451static gboolean udp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 2452{
2453 CharDriverState *chr = opaque;
2454 NetCharDriver *s = chr->opaque;
9894dc0c 2455 ssize_t ret;
6f97dba0 2456
cdbf6e16
PB		 2457 if (s->max_size == 0) {
2458 return TRUE;
2459 }
9894dc0c
DB		 2460 ret = qio_channel_read(
2461 s->ioc, (char *)s->buf, sizeof(s->buf), NULL);
2462 if (ret <= 0) {
26da70c7 2463 remove_fd_in_watch(chr);
76a9644b
AL		 2464 return FALSE;
2465 }
9894dc0c 2466 s->bufcnt = ret;
6f97dba0
AL		 2467
2468 s->bufptr = 0;
2469 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
fa5efccb 2470 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
6f97dba0 2471 s->bufptr++;
909cda12 2472 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0 2473 }
76a9644b
AL		 2474
2475 return TRUE;
6f97dba0
AL		 2476}
2477
2478static void udp_chr_update_read_handler(CharDriverState *chr)
2479{
2480 NetCharDriver *s = chr->opaque;
2481
26da70c7 2482 remove_fd_in_watch(chr);
9894dc0c
DB		 2483 if (s->ioc) {
2484 chr->fd_in_tag = io_add_watch_poll(s->ioc,
2485 udp_chr_read_poll,
7ba9addc 2486 udp_chr_read, chr);
6f97dba0
AL		 2487 }
2488}
2489
819f56b7
AL		 2490static void udp_chr_close(CharDriverState *chr)
2491{
2492 NetCharDriver *s = chr->opaque;
26da70c7
AS		 2493
2494 remove_fd_in_watch(chr);
9894dc0c
DB		 2495 if (s->ioc) {
2496 object_unref(OBJECT(s->ioc));
819f56b7 2497 }
7267c094 2498 g_free(s);
a425d23f 2499 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
819f56b7
AL		 2500}
2501
9894dc0c
DB		 2502static CharDriverState *qemu_chr_open_udp(QIOChannelSocket *sioc,
2503 ChardevCommon *backend,
2504 Error **errp)
6f97dba0
AL		 2505{
2506 CharDriverState *chr = NULL;
2507 NetCharDriver *s = NULL;
6f97dba0 2508
d0d7708b
DB		 2509 chr = qemu_chr_alloc(backend, errp);
2510 if (!chr) {
2511 return NULL;
2512 }
2d528d45 2513 s = g_new0(NetCharDriver, 1);
6f97dba0 2514
9894dc0c 2515 s->ioc = QIO_CHANNEL(sioc);
6f97dba0
AL		 2516 s->bufcnt = 0;
2517 s->bufptr = 0;
2518 chr->opaque = s;
2519 chr->chr_write = udp_chr_write;
2520 chr->chr_update_read_handler = udp_chr_update_read_handler;
819f56b7 2521 chr->chr_close = udp_chr_close;
bd5c51ee
MR		 2522 /* be isn't opened until we get a connection */
2523 chr->explicit_be_open = true;
1f51470d 2524 return chr;
3ecc059d 2525}
6f97dba0 2526
6f97dba0
AL		 2527/***********************************************************/
2528/* TCP Net console */
2529
2530typedef struct {
a8fb5427
DB		 2531 QIOChannel *ioc; /* Client I/O channel */
2532 QIOChannelSocket *sioc; /* Client master channel */
9894dc0c 2533 QIOChannelSocket *listen_ioc;
7ba9addc 2534 guint listen_tag;
a8fb5427 2535 QCryptoTLSCreds *tls_creds;
6f97dba0
AL		 2536 int connected;
2537 int max_size;
2538 int do_telnetopt;
2539 int do_nodelay;
2540 int is_unix;
c76bf6bb 2541 int *read_msgfds;
9894dc0c 2542 size_t read_msgfds_num;
d39aac7a 2543 int *write_msgfds;
9894dc0c 2544 size_t write_msgfds_num;
cfb429cb
CM		 2545
2546 SocketAddress *addr;
2547 bool is_listen;
2548 bool is_telnet;
5dd1f02b
CM		 2549
2550 guint reconnect_timer;
2551 int64_t reconnect_time;
5008e5b7 2552 bool connect_err_reported;
6f97dba0
AL		 2553} TCPCharDriver;
2554
5dd1f02b
CM		 2555static gboolean socket_reconnect_timeout(gpointer opaque);
2556
2557static void qemu_chr_socket_restart_timer(CharDriverState *chr)
2558{
2559 TCPCharDriver *s = chr->opaque;
2560 assert(s->connected == 0);
2561 s->reconnect_timer = g_timeout_add_seconds(s->reconnect_time,
2562 socket_reconnect_timeout, chr);
2563}
2564
5008e5b7
CM		 2565static void check_report_connect_error(CharDriverState *chr,
2566 Error *err)
2567{
2568 TCPCharDriver *s = chr->opaque;
2569
2570 if (!s->connect_err_reported) {
2571 error_report("Unable to connect character device %s: %s",
2572 chr->label, error_get_pretty(err));
2573 s->connect_err_reported = true;
2574 }
2575 qemu_chr_socket_restart_timer(chr);
2576}
2577
9894dc0c
DB		 2578static gboolean tcp_chr_accept(QIOChannel *chan,
2579 GIOCondition cond,
2580 void *opaque);
d39aac7a 2581
9005b2a7 2582/* Called with chr_write_lock held. */
6f97dba0
AL		 2583static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2584{
2585 TCPCharDriver *s = chr->opaque;
2586 if (s->connected) {
9894dc0c
DB		 2587 int ret = io_channel_send_full(s->ioc, buf, len,
2588 s->write_msgfds,
2589 s->write_msgfds_num);
2590
2591 /* free the written msgfds, no matter what */
2592 if (s->write_msgfds_num) {
2593 g_free(s->write_msgfds);
2594 s->write_msgfds = 0;
2595 s->write_msgfds_num = 0;
d39aac7a 2596 }
9894dc0c
DB		 2597
2598 return ret;
455aa1e0 2599 } else {
6db0fdce 2600 /* XXX: indicate an error ? */
455aa1e0 2601 return len;
6f97dba0
AL		 2602 }
2603}
2604
2605static int tcp_chr_read_poll(void *opaque)
2606{
2607 CharDriverState *chr = opaque;
2608 TCPCharDriver *s = chr->opaque;
2609 if (!s->connected)
2610 return 0;
909cda12 2611 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2612 return s->max_size;
2613}
2614
2615#define IAC 255
2616#define IAC_BREAK 243
2617static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
2618 TCPCharDriver *s,
2619 uint8_t *buf, int *size)
2620{
2621 /* Handle any telnet client's basic IAC options to satisfy char by
2622 * char mode with no echo. All IAC options will be removed from
2623 * the buf and the do_telnetopt variable will be used to track the
2624 * state of the width of the IAC information.
2625 *
2626 * IAC commands come in sets of 3 bytes with the exception of the
2627 * "IAC BREAK" command and the double IAC.
2628 */
2629
2630 int i;
2631 int j = 0;
2632
2633 for (i = 0; i < *size; i++) {
2634 if (s->do_telnetopt > 1) {
2635 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2636 /* Double IAC means send an IAC */
2637 if (j != i)
2638 buf[j] = buf[i];
2639 j++;
2640 s->do_telnetopt = 1;
2641 } else {
2642 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2643 /* Handle IAC break commands by sending a serial break */
a425d23f 2644 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
6f97dba0
AL		 2645 s->do_telnetopt++;
2646 }
2647 s->do_telnetopt++;
2648 }
2649 if (s->do_telnetopt >= 4) {
2650 s->do_telnetopt = 1;
2651 }
2652 } else {
2653 if ((unsigned char)buf[i] == IAC) {
2654 s->do_telnetopt = 2;
2655 } else {
2656 if (j != i)
2657 buf[j] = buf[i];
2658 j++;
2659 }
2660 }
2661 }
2662 *size = j;
2663}
2664
c76bf6bb 2665static int tcp_get_msgfds(CharDriverState *chr, int *fds, int num)
7d174059
MM		 2666{
2667 TCPCharDriver *s = chr->opaque;
c76bf6bb
NN		 2668 int to_copy = (s->read_msgfds_num < num) ? s->read_msgfds_num : num;
2669
c4095726
MT		 2670 assert(num <= TCP_MAX_FDS);
2671
c76bf6bb 2672 if (to_copy) {
d2fc39b4
SH		 2673 int i;
2674
c76bf6bb
NN		 2675 memcpy(fds, s->read_msgfds, to_copy * sizeof(int));
2676
d2fc39b4
SH		 2677 /* Close unused fds */
2678 for (i = to_copy; i < s->read_msgfds_num; i++) {
2679 close(s->read_msgfds[i]);
2680 }
2681
c76bf6bb
NN		 2682 g_free(s->read_msgfds);
2683 s->read_msgfds = 0;
2684 s->read_msgfds_num = 0;
2685 }
2686
2687 return to_copy;
7d174059
MM		 2688}
2689
d39aac7a
NN		 2690static int tcp_set_msgfds(CharDriverState *chr, int *fds, int num)
2691{
2692 TCPCharDriver *s = chr->opaque;
2693
9894dc0c
DB		 2694 if (!qio_channel_has_feature(s->ioc,
2695 QIO_CHANNEL_FEATURE_FD_PASS)) {
2696 return -1;
2697 }
d39aac7a 2698 /* clear old pending fd array */
ef1e1e07 2699 g_free(s->write_msgfds);
d39aac7a
NN		 2700
2701 if (num) {
2d528d45 2702 s->write_msgfds = g_new(int, num);
d39aac7a
NN		 2703 memcpy(s->write_msgfds, fds, num * sizeof(int));
2704 }
2705
2706 s->write_msgfds_num = num;
2707
2708 return 0;
2709}
2710
9894dc0c 2711static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
7d174059
MM		 2712{
2713 TCPCharDriver *s = chr->opaque;
9894dc0c
DB		 2714 struct iovec iov = { .iov_base = buf, .iov_len = len };
2715 int ret;
2716 size_t i;
2717 int *msgfds = NULL;
2718 size_t msgfds_num = 0;
2719
2720 if (qio_channel_has_feature(s->ioc, QIO_CHANNEL_FEATURE_FD_PASS)) {
2721 ret = qio_channel_readv_full(s->ioc, &iov, 1,
2722 &msgfds, &msgfds_num,
2723 NULL);
2724 } else {
2725 ret = qio_channel_readv_full(s->ioc, &iov, 1,
2726 NULL, NULL,
2727 NULL);
2728 }
7d174059 2729
9894dc0c 2730 if (msgfds_num) {
c76bf6bb
NN		 2731 /* close and clean read_msgfds */
2732 for (i = 0; i < s->read_msgfds_num; i++) {
2733 close(s->read_msgfds[i]);
2734 }
9b938c72 2735
c76bf6bb
NN		 2736 if (s->read_msgfds_num) {
2737 g_free(s->read_msgfds);
2738 }
2739
9894dc0c
DB		 2740 s->read_msgfds = msgfds;
2741 s->read_msgfds_num = msgfds_num;
7d174059 2742 }
7d174059 2743
9894dc0c
DB		 2744 for (i = 0; i < s->read_msgfds_num; i++) {
2745 int fd = s->read_msgfds[i];
2746 if (fd < 0) {
2747 continue;
2748 }
9977c894 2749
9894dc0c
DB		 2750 /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
2751 qemu_set_block(fd);
7d174059 2752
9894dc0c
DB		 2753#ifndef MSG_CMSG_CLOEXEC
2754 qemu_set_cloexec(fd);
06138651 2755#endif
06138651 2756 }
9977c894 2757
7d174059 2758 return ret;
9977c894 2759}
9977c894 2760
d3cc5bc4
AS		 2761static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
2762{
2763 TCPCharDriver *s = chr->opaque;
9894dc0c 2764 return qio_channel_create_watch(s->ioc, cond);
d3cc5bc4
AS		 2765}
2766
7b0bfdf5
NN		 2767static void tcp_chr_disconnect(CharDriverState *chr)
2768{
2769 TCPCharDriver *s = chr->opaque;
2770
2771 s->connected = 0;
9894dc0c
DB		 2772 if (s->listen_ioc) {
2773 s->listen_tag = qio_channel_add_watch(
2774 QIO_CHANNEL(s->listen_ioc), G_IO_IN, tcp_chr_accept, chr, NULL);
7b0bfdf5
NN		 2775 }
2776 remove_fd_in_watch(chr);
a8fb5427
DB		 2777 object_unref(OBJECT(s->sioc));
2778 s->sioc = NULL;
9894dc0c
DB		 2779 object_unref(OBJECT(s->ioc));
2780 s->ioc = NULL;
0ff0fad2
DB		 2781 g_free(chr->filename);
2782 chr->filename = SocketAddress_to_str("disconnected:", s->addr,
2783 s->is_listen, s->is_telnet);
7b0bfdf5 2784 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
5dd1f02b
CM		 2785 if (s->reconnect_time) {
2786 qemu_chr_socket_restart_timer(chr);
2787 }
7b0bfdf5
NN		 2788}
2789
9894dc0c 2790static gboolean tcp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 2791{
2792 CharDriverState *chr = opaque;
2793 TCPCharDriver *s = chr->opaque;
9bd7854e 2794 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2795 int len, size;
2796
2ea5a7af 2797 if (!s->connected || s->max_size <= 0) {
cdbf6e16 2798 return TRUE;
2ea5a7af 2799 }
6f97dba0
AL		 2800 len = sizeof(buf);
2801 if (len > s->max_size)
2802 len = s->max_size;
9977c894 2803 size = tcp_chr_recv(chr, (void *)buf, len);
9894dc0c 2804 if (size == 0 || size == -1) {
6f97dba0 2805 /* connection closed */
7b0bfdf5 2806 tcp_chr_disconnect(chr);
6f97dba0
AL		 2807 } else if (size > 0) {
2808 if (s->do_telnetopt)
2809 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2810 if (size > 0)
fa5efccb 2811 qemu_chr_be_write(chr, buf, size);
6f97dba0 2812 }
2ea5a7af
AL		 2813
2814 return TRUE;
6f97dba0
AL		 2815}
2816
7b0bfdf5
NN		 2817static int tcp_chr_sync_read(CharDriverState *chr, const uint8_t *buf, int len)
2818{
2819 TCPCharDriver *s = chr->opaque;
2820 int size;
2821
2822 if (!s->connected) {
2823 return 0;
2824 }
2825
2826 size = tcp_chr_recv(chr, (void *) buf, len);
2827 if (size == 0) {
2828 /* connection closed */
2829 tcp_chr_disconnect(chr);
2830 }
2831
2832 return size;
2833}
2834
6f97dba0
AL		 2835static void tcp_chr_connect(void *opaque)
2836{
2837 CharDriverState *chr = opaque;
2838 TCPCharDriver *s = chr->opaque;
16cc4ffe 2839
0ff0fad2 2840 g_free(chr->filename);
a8fb5427
DB		 2841 chr->filename = sockaddr_to_str(
2842 &s->sioc->localAddr, s->sioc->localAddrLen,
2843 &s->sioc->remoteAddr, s->sioc->remoteAddrLen,
2844 s->is_listen, s->is_telnet);
6f97dba0
AL		 2845
2846 s->connected = 1;
9894dc0c
DB		 2847 if (s->ioc) {
2848 chr->fd_in_tag = io_add_watch_poll(s->ioc,
2849 tcp_chr_read_poll,
7ba9addc 2850 tcp_chr_read, chr);
bbdd2ad0 2851 }
fee204fd 2852 qemu_chr_be_generic_open(chr);
6f97dba0
AL		 2853}
2854
ac1b84dd
GH		 2855static void tcp_chr_update_read_handler(CharDriverState *chr)
2856{
2857 TCPCharDriver *s = chr->opaque;
2858
1e94f23d
DB		 2859 if (!s->connected) {
2860 return;
2861 }
2862
ac1b84dd 2863 remove_fd_in_watch(chr);
9894dc0c
DB		 2864 if (s->ioc) {
2865 chr->fd_in_tag = io_add_watch_poll(s->ioc,
2866 tcp_chr_read_poll,
ac1b84dd
GH		 2867 tcp_chr_read, chr);
2868 }
2869}
2870
f2001a7e
DB		 2871typedef struct {
2872 CharDriverState *chr;
2873 char buf[12];
2874 size_t buflen;
2875} TCPCharDriverTelnetInit;
2876
2877static gboolean tcp_chr_telnet_init_io(QIOChannel *ioc,
2878 GIOCondition cond G_GNUC_UNUSED,
2879 gpointer user_data)
6f97dba0 2880{
f2001a7e
DB		 2881 TCPCharDriverTelnetInit *init = user_data;
2882 ssize_t ret;
2883
2884 ret = qio_channel_write(ioc, init->buf, init->buflen, NULL);
2885 if (ret < 0) {
2886 if (ret == QIO_CHANNEL_ERR_BLOCK) {
2887 ret = 0;
2888 } else {
2889 tcp_chr_disconnect(init->chr);
2890 return FALSE;
2891 }
2892 }
2893 init->buflen -= ret;
2894
2895 if (init->buflen == 0) {
2896 tcp_chr_connect(init->chr);
2897 return FALSE;
2898 }
2899
2900 memmove(init->buf, init->buf + ret, init->buflen);
2901
2902 return TRUE;
2903}
2904
2905static void tcp_chr_telnet_init(CharDriverState *chr)
2906{
2907 TCPCharDriver *s = chr->opaque;
2908 TCPCharDriverTelnetInit *init =
2909 g_new0(TCPCharDriverTelnetInit, 1);
2910 size_t n = 0;
2911
2912 init->chr = chr;
2913 init->buflen = 12;
2914
2915#define IACSET(x, a, b, c) \
2916 do { \
2917 x[n++] = a; \
2918 x[n++] = b; \
2919 x[n++] = c; \
2920 } while (0)
2921
2922 /* Prep the telnet negotion to put telnet in binary,
2923 * no echo, single char mode */
2924 IACSET(init->buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2925 IACSET(init->buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2926 IACSET(init->buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2927 IACSET(init->buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2928
2929#undef IACSET
2930
2931 qio_channel_add_watch(
2932 s->ioc, G_IO_OUT,
2933 tcp_chr_telnet_init_io,
2934 init, NULL);
6f97dba0
AL		 2935}
2936
a8fb5427
DB		 2937
2938static void tcp_chr_tls_handshake(Object *source,
2939 Error *err,
2940 gpointer user_data)
2941{
2942 CharDriverState *chr = user_data;
2943 TCPCharDriver *s = chr->opaque;
2944
2945 if (err) {
2946 tcp_chr_disconnect(chr);
2947 } else {
2948 if (s->do_telnetopt) {
2949 tcp_chr_telnet_init(chr);
2950 } else {
2951 tcp_chr_connect(chr);
2952 }
2953 }
2954}
2955
2956
2957static void tcp_chr_tls_init(CharDriverState *chr)
2958{
2959 TCPCharDriver *s = chr->opaque;
2960 QIOChannelTLS *tioc;
2961 Error *err = NULL;
2962
2963 if (s->is_listen) {
2964 tioc = qio_channel_tls_new_server(
2965 s->ioc, s->tls_creds,
2966 NULL, /* XXX Use an ACL */
2967 &err);
2968 } else {
2969 tioc = qio_channel_tls_new_client(
2970 s->ioc, s->tls_creds,
2971 s->addr->u.inet->host,
2972 &err);
2973 }
2974 if (tioc == NULL) {
2975 error_free(err);
2976 tcp_chr_disconnect(chr);
2977 }
2978 object_unref(OBJECT(s->ioc));
2979 s->ioc = QIO_CHANNEL(tioc);
2980
2981 qio_channel_tls_handshake(tioc,
2982 tcp_chr_tls_handshake,
2983 chr,
2984 NULL);
2985}
2986
2987
9894dc0c 2988static int tcp_chr_new_client(CharDriverState *chr, QIOChannelSocket *sioc)
13661089
DB		 2989{
2990 TCPCharDriver *s = chr->opaque;
9894dc0c 2991 if (s->ioc != NULL) {
13661089 2992 return -1;
9894dc0c 2993 }
13661089 2994
9894dc0c
DB		 2995 s->ioc = QIO_CHANNEL(sioc);
2996 object_ref(OBJECT(sioc));
a8fb5427
DB		 2997 s->sioc = sioc;
2998 object_ref(OBJECT(sioc));
9894dc0c
DB		 2999
3000 if (s->do_nodelay) {
3001 qio_channel_set_delay(s->ioc, false);
3002 }
910b6368
PB		 3003 if (s->listen_tag) {
3004 g_source_remove(s->listen_tag);
3005 s->listen_tag = 0;
3006 }
f2001a7e 3007
a8fb5427
DB		 3008 if (s->tls_creds) {
3009 tcp_chr_tls_init(chr);
f2001a7e 3010 } else {
a8fb5427
DB		 3011 if (s->do_telnetopt) {
3012 tcp_chr_telnet_init(chr);
3013 } else {
3014 tcp_chr_connect(chr);
3015 }
f2001a7e 3016 }
13661089
DB		 3017
3018 return 0;
3019}
3020
9894dc0c
DB		 3021
3022static int tcp_chr_add_client(CharDriverState *chr, int fd)
3023{
3024 int ret;
3025 QIOChannelSocket *sioc;
3026
3027 sioc = qio_channel_socket_new_fd(fd, NULL);
3028 if (!sioc) {
3029 return -1;
3030 }
3031 qio_channel_set_blocking(QIO_CHANNEL(sioc), false, NULL);
3032 ret = tcp_chr_new_client(chr, sioc);
3033 object_unref(OBJECT(sioc));
3034 return ret;
3035}
3036
3037static gboolean tcp_chr_accept(QIOChannel *channel,
3038 GIOCondition cond,
3039 void *opaque)
6f97dba0
AL		 3040{
3041 CharDriverState *chr = opaque;
9894dc0c 3042 QIOChannelSocket *sioc;
6f97dba0 3043
9894dc0c
DB		 3044 sioc = qio_channel_socket_accept(QIO_CHANNEL_SOCKET(channel),
3045 NULL);
3046 if (!sioc) {
3047 return TRUE;
6f97dba0 3048 }
9894dc0c 3049
9894dc0c
DB		 3050 tcp_chr_new_client(chr, sioc);
3051
3052 object_unref(OBJECT(sioc));
2ea5a7af
AL		 3053
3054 return TRUE;
6f97dba0
AL		 3055}
3056
3057static void tcp_chr_close(CharDriverState *chr)
3058{
3059 TCPCharDriver *s = chr->opaque;
c76bf6bb 3060 int i;
cfb429cb 3061
5dd1f02b
CM		 3062 if (s->reconnect_timer) {
3063 g_source_remove(s->reconnect_timer);
3064 s->reconnect_timer = 0;
3065 }
cfb429cb 3066 qapi_free_SocketAddress(s->addr);
9894dc0c
DB		 3067 remove_fd_in_watch(chr);
3068 if (s->ioc) {
3069 object_unref(OBJECT(s->ioc));
819f56b7 3070 }
9894dc0c
DB		 3071 if (s->listen_tag) {
3072 g_source_remove(s->listen_tag);
3073 s->listen_tag = 0;
3074 }
3075 if (s->listen_ioc) {
3076 object_unref(OBJECT(s->listen_ioc));
819f56b7 3077 }
c76bf6bb
NN		 3078 if (s->read_msgfds_num) {
3079 for (i = 0; i < s->read_msgfds_num; i++) {
3080 close(s->read_msgfds[i]);
3081 }
3082 g_free(s->read_msgfds);
3083 }
a8fb5427
DB		 3084 if (s->tls_creds) {
3085 object_unref(OBJECT(s->tls_creds));
3086 }
d39aac7a
NN		 3087 if (s->write_msgfds_num) {
3088 g_free(s->write_msgfds);
3089 }
7267c094 3090 g_free(s);
a425d23f 3091 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 3092}
3093
9894dc0c
DB		 3094static void qemu_chr_finish_socket_connection(CharDriverState *chr,
3095 QIOChannelSocket *sioc)
6f97dba0 3096{
43ded1a0 3097 TCPCharDriver *s = chr->opaque;
f6bd5d6e 3098
cfb429cb 3099 if (s->is_listen) {
9894dc0c
DB		 3100 s->listen_ioc = sioc;
3101 s->listen_tag = qio_channel_add_watch(
3102 QIO_CHANNEL(s->listen_ioc), G_IO_IN, tcp_chr_accept, chr, NULL);
f6bd5d6e 3103 } else {
9894dc0c
DB		 3104 tcp_chr_new_client(chr, sioc);
3105 object_unref(OBJECT(sioc));
f6bd5d6e 3106 }
43ded1a0
CM		 3107}
3108
9894dc0c 3109static void qemu_chr_socket_connected(Object *src, Error *err, void *opaque)
5dd1f02b 3110{
9894dc0c 3111 QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(src);
5dd1f02b 3112 CharDriverState *chr = opaque;
5008e5b7 3113 TCPCharDriver *s = chr->opaque;
5dd1f02b 3114
9894dc0c 3115 if (err) {
5008e5b7 3116 check_report_connect_error(chr, err);
9894dc0c 3117 object_unref(src);
5dd1f02b
CM		 3118 return;
3119 }
3120
5008e5b7 3121 s->connect_err_reported = false;
9894dc0c 3122 qemu_chr_finish_socket_connection(chr, sioc);
5dd1f02b
CM		 3123}
3124
cfb429cb 3125static bool qemu_chr_open_socket_fd(CharDriverState *chr, Error **errp)
43ded1a0 3126{
cfb429cb 3127 TCPCharDriver *s = chr->opaque;
9894dc0c 3128 QIOChannelSocket *sioc = qio_channel_socket_new();
43ded1a0 3129
cfb429cb 3130 if (s->is_listen) {
9894dc0c
DB		 3131 if (qio_channel_socket_listen_sync(sioc, s->addr, errp) < 0) {
3132 goto fail;
3133 }
3134 qemu_chr_finish_socket_connection(chr, sioc);
5dd1f02b 3135 } else if (s->reconnect_time) {
9894dc0c
DB		 3136 qio_channel_socket_connect_async(sioc, s->addr,
3137 qemu_chr_socket_connected,
3138 chr, NULL);
5dd1f02b 3139 } else {
9894dc0c
DB		 3140 if (qio_channel_socket_connect_sync(sioc, s->addr, errp) < 0) {
3141 goto fail;
3142 }
3143 qemu_chr_finish_socket_connection(chr, sioc);
43ded1a0
CM		 3144 }
3145
16cc4ffe 3146 return true;
9894dc0c
DB		 3147
3148 fail:
3149 object_unref(OBJECT(sioc));
3150 return false;
f6bd5d6e
GH		 3151}
3152
51767e7c 3153/*********************************************************/
3949e594 3154/* Ring buffer chardev */
51767e7c
LL		 3155
3156typedef struct {
3157 size_t size;
3158 size_t prod;
3159 size_t cons;
3160 uint8_t *cbuf;
3949e594 3161} RingBufCharDriver;
51767e7c 3162
3949e594 3163static size_t ringbuf_count(const CharDriverState *chr)
51767e7c 3164{
3949e594 3165 const RingBufCharDriver *d = chr->opaque;
51767e7c 3166
5c230105 3167 return d->prod - d->cons;
51767e7c
LL		 3168}
3169
9005b2a7 3170/* Called with chr_write_lock held. */
3949e594 3171static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
51767e7c 3172{
3949e594 3173 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3174 int i;
3175
3176 if (!buf || (len < 0)) {
3177 return -1;
3178 }
3179
3180 for (i = 0; i < len; i++ ) {
5c230105
MA		 3181 d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
3182 if (d->prod - d->cons > d->size) {
51767e7c
LL		 3183 d->cons = d->prod - d->size;
3184 }
3185 }
3186
3187 return 0;
3188}
3189
3949e594 3190static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len)
51767e7c 3191{
3949e594 3192 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3193 int i;
3194
9005b2a7 3195 qemu_mutex_lock(&chr->chr_write_lock);
5c230105
MA		 3196 for (i = 0; i < len && d->cons != d->prod; i++) {
3197 buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
51767e7c 3198 }
9005b2a7 3199 qemu_mutex_unlock(&chr->chr_write_lock);
51767e7c
LL		 3200
3201 return i;
3202}
3203
3949e594 3204static void ringbuf_chr_close(struct CharDriverState *chr)
51767e7c 3205{
3949e594 3206 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3207
3208 g_free(d->cbuf);
3209 g_free(d);
3210 chr->opaque = NULL;
3211}
3212
479f09a1
PB		 3213static CharDriverState *qemu_chr_open_ringbuf(const char *id,
3214 ChardevBackend *backend,
3215 ChardevReturn *ret,
4f57378f 3216 Error **errp)
51767e7c 3217{
130257dc 3218 ChardevRingbuf *opts = backend->u.ringbuf;
d0d7708b 3219 ChardevCommon *common = qapi_ChardevRingbuf_base(backend->u.ringbuf);
51767e7c 3220 CharDriverState *chr;
3949e594 3221 RingBufCharDriver *d;
51767e7c 3222
d0d7708b
DB		 3223 chr = qemu_chr_alloc(common, errp);
3224 if (!chr) {
3225 return NULL;
3226 }
51767e7c
LL		 3227 d = g_malloc(sizeof(*d));
3228
1da48c65 3229 d->size = opts->has_size ? opts->size : 65536;
51767e7c
LL		 3230
3231 /* The size must be power of 2 */
3232 if (d->size & (d->size - 1)) {
4f57378f 3233 error_setg(errp, "size of ringbuf chardev must be power of two");
51767e7c
LL		 3234 goto fail;
3235 }
3236
3237 d->prod = 0;
3238 d->cons = 0;
3239 d->cbuf = g_malloc0(d->size);
3240
3241 chr->opaque = d;
3949e594
MA		 3242 chr->chr_write = ringbuf_chr_write;
3243 chr->chr_close = ringbuf_chr_close;
51767e7c
LL		 3244
3245 return chr;
3246
3247fail:
3248 g_free(d);
d0d7708b 3249 qemu_chr_free_common(chr);
51767e7c
LL		 3250 return NULL;
3251}
3252
8e597779 3253bool chr_is_ringbuf(const CharDriverState *chr)
1f590cf9 3254{
3949e594 3255 return chr->chr_write == ringbuf_chr_write;
1f590cf9
LL		 3256}
3257
3949e594 3258void qmp_ringbuf_write(const char *device, const char *data,
82e59a67 3259 bool has_format, enum DataFormat format,
1f590cf9
LL		 3260 Error **errp)
3261{
3262 CharDriverState *chr;
c4f331b6 3263 const uint8_t *write_data;
1f590cf9 3264 int ret;
3d1bba20 3265 gsize write_count;
1f590cf9
LL		 3266
3267 chr = qemu_chr_find(device);
3268 if (!chr) {
1a69278e 3269 error_setg(errp, "Device '%s' not found", device);
1f590cf9
LL		 3270 return;
3271 }
3272
3949e594
MA		 3273 if (!chr_is_ringbuf(chr)) {
3274 error_setg(errp,"%s is not a ringbuf device", device);
1f590cf9
LL		 3275 return;
3276 }
3277
1f590cf9 3278 if (has_format && (format == DATA_FORMAT_BASE64)) {
e9cf2fe0
DB		 3279 write_data = qbase64_decode(data, -1,
3280 &write_count,
3281 errp);
3282 if (!write_data) {
3283 return;
3284 }
1f590cf9
LL		 3285 } else {
3286 write_data = (uint8_t *)data;
82e59a67 3287 write_count = strlen(data);
1f590cf9
LL		 3288 }
3289
3949e594 3290 ret = ringbuf_chr_write(chr, write_data, write_count);
1f590cf9 3291
13289fb5
MA		 3292 if (write_data != (uint8_t *)data) {
3293 g_free((void *)write_data);
3294 }
3295
1f590cf9
LL		 3296 if (ret < 0) {
3297 error_setg(errp, "Failed to write to device %s", device);
3298 return;
3299 }
3300}
3301
3949e594 3302char *qmp_ringbuf_read(const char *device, int64_t size,
3ab651fc
MA		 3303 bool has_format, enum DataFormat format,
3304 Error **errp)
49b6d722
LL		 3305{
3306 CharDriverState *chr;
c4f331b6 3307 uint8_t *read_data;
49b6d722 3308 size_t count;
3ab651fc 3309 char *data;
49b6d722
LL		 3310
3311 chr = qemu_chr_find(device);
3312 if (!chr) {
1a69278e 3313 error_setg(errp, "Device '%s' not found", device);
49b6d722
LL		 3314 return NULL;
3315 }
3316
3949e594
MA		 3317 if (!chr_is_ringbuf(chr)) {
3318 error_setg(errp,"%s is not a ringbuf device", device);
49b6d722
LL		 3319 return NULL;
3320 }
3321
3322 if (size <= 0) {
3323 error_setg(errp, "size must be greater than zero");
3324 return NULL;
3325 }
3326
3949e594 3327 count = ringbuf_count(chr);
49b6d722 3328 size = size > count ? count : size;
44f3bcd2 3329 read_data = g_malloc(size + 1);
49b6d722 3330
3949e594 3331 ringbuf_chr_read(chr, read_data, size);
49b6d722
LL		 3332
3333 if (has_format && (format == DATA_FORMAT_BASE64)) {
3ab651fc 3334 data = g_base64_encode(read_data, size);
13289fb5 3335 g_free(read_data);
49b6d722 3336 } else {
3949e594
MA		 3337 /*
3338 * FIXME should read only complete, valid UTF-8 characters up
3339 * to @size bytes. Invalid sequences should be replaced by a
3340 * suitable replacement character. Except when (and only
3341 * when) ring buffer lost characters since last read, initial
3342 * continuation characters should be dropped.
3343 */
44f3bcd2 3344 read_data[size] = 0;
3ab651fc 3345 data = (char *)read_data;
49b6d722
LL		 3346 }
3347
3ab651fc 3348 return data;
49b6d722
LL		 3349}
3350
33521634 3351QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
191bc01b 3352{
6ea314d9 3353 char host[65], port[33], width[8], height[8];
aeb2c47a 3354 int pos;
7d31544f 3355 const char *p;
191bc01b 3356 QemuOpts *opts;
8be7e7e4 3357 Error *local_err = NULL;
191bc01b 3358
8be7e7e4 3359 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
84d18f06 3360 if (local_err) {
33394884 3361 error_report_err(local_err);
191bc01b 3362 return NULL;
8be7e7e4 3363 }
191bc01b 3364
7591c5c1
GH		 3365 if (strstart(filename, "mon:", &p)) {
3366 filename = p;
f43e47db 3367 qemu_opt_set(opts, "mux", "on", &error_abort);
02c4bdf1
PB		 3368 if (strcmp(filename, "stdio") == 0) {
3369 /* Monitor is muxed to stdio: do not exit on Ctrl+C by default
3370 * but pass it to the guest. Handle this only for compat syntax,
3371 * for -chardev syntax we have special option for this.
3372 * This is what -nographic did, redirecting+muxing serial+monitor
3373 * to stdio causing Ctrl+C to be passed to guest. */
f43e47db 3374 qemu_opt_set(opts, "signal", "off", &error_abort);
02c4bdf1 3375 }
7591c5c1
GH		 3376 }
3377
f0457e8d
GH		 3378 if (strcmp(filename, "null") == 0 ||
3379 strcmp(filename, "pty") == 0 ||
3380 strcmp(filename, "msmouse") == 0 ||
dc1c21e6 3381 strcmp(filename, "braille") == 0 ||
5692399f 3382 strcmp(filename, "testdev") == 0 ||
f0457e8d 3383 strcmp(filename, "stdio") == 0) {
f43e47db 3384 qemu_opt_set(opts, "backend", filename, &error_abort);
191bc01b
GH		 3385 return opts;
3386 }
6ea314d9 3387 if (strstart(filename, "vc", &p)) {
f43e47db 3388 qemu_opt_set(opts, "backend", "vc", &error_abort);
6ea314d9 3389 if (*p == ':') {
49aa4058 3390 if (sscanf(p+1, "%7[0-9]x%7[0-9]", width, height) == 2) {
6ea314d9 3391 /* pixels */
f43e47db
MA		 3392 qemu_opt_set(opts, "width", width, &error_abort);
3393 qemu_opt_set(opts, "height", height, &error_abort);
49aa4058 3394 } else if (sscanf(p+1, "%7[0-9]Cx%7[0-9]C", width, height) == 2) {
6ea314d9 3395 /* chars */
f43e47db
MA		 3396 qemu_opt_set(opts, "cols", width, &error_abort);
3397 qemu_opt_set(opts, "rows", height, &error_abort);
6ea314d9
GH		 3398 } else {
3399 goto fail;
3400 }
3401 }
3402 return opts;
3403 }
d6c983cd 3404 if (strcmp(filename, "con:") == 0) {
f43e47db 3405 qemu_opt_set(opts, "backend", "console", &error_abort);
d6c983cd
GH		 3406 return opts;
3407 }
48b76496 3408 if (strstart(filename, "COM", NULL)) {
f43e47db
MA		 3409 qemu_opt_set(opts, "backend", "serial", &error_abort);
3410 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3411 return opts;
3412 }
7d31544f 3413 if (strstart(filename, "file:", &p)) {
f43e47db
MA		 3414 qemu_opt_set(opts, "backend", "file", &error_abort);
3415 qemu_opt_set(opts, "path", p, &error_abort);
7d31544f
GH		 3416 return opts;
3417 }
3418 if (strstart(filename, "pipe:", &p)) {
f43e47db
MA		 3419 qemu_opt_set(opts, "backend", "pipe", &error_abort);
3420 qemu_opt_set(opts, "path", p, &error_abort);
7d31544f
GH		 3421 return opts;
3422 }
aeb2c47a
GH		 3423 if (strstart(filename, "tcp:", &p) ||
3424 strstart(filename, "telnet:", &p)) {
3425 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3426 host[0] = 0;
3427 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
3428 goto fail;
3429 }
f43e47db
MA		 3430 qemu_opt_set(opts, "backend", "socket", &error_abort);
3431 qemu_opt_set(opts, "host", host, &error_abort);
3432 qemu_opt_set(opts, "port", port, &error_abort);
aeb2c47a 3433 if (p[pos] == ',') {
dc523cd3
MA		 3434 qemu_opts_do_parse(opts, p+pos+1, NULL, &local_err);
3435 if (local_err) {
3436 error_report_err(local_err);
aeb2c47a 3437 goto fail;
dc523cd3 3438 }
aeb2c47a
GH		 3439 }
3440 if (strstart(filename, "telnet:", &p))
f43e47db 3441 qemu_opt_set(opts, "telnet", "on", &error_abort);
aeb2c47a
GH		 3442 return opts;
3443 }
7e1b35b4 3444 if (strstart(filename, "udp:", &p)) {
f43e47db 3445 qemu_opt_set(opts, "backend", "udp", &error_abort);
7e1b35b4
GH		 3446 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
3447 host[0] = 0;
39324ca4 3448 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
7e1b35b4
GH		 3449 goto fail;
3450 }
3451 }
f43e47db
MA		 3452 qemu_opt_set(opts, "host", host, &error_abort);
3453 qemu_opt_set(opts, "port", port, &error_abort);
7e1b35b4
GH		 3454 if (p[pos] == '@') {
3455 p += pos + 1;
3456 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3457 host[0] = 0;
3458 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
7e1b35b4
GH		 3459 goto fail;
3460 }
3461 }
f43e47db
MA		 3462 qemu_opt_set(opts, "localaddr", host, &error_abort);
3463 qemu_opt_set(opts, "localport", port, &error_abort);
7e1b35b4
GH		 3464 }
3465 return opts;
3466 }
aeb2c47a 3467 if (strstart(filename, "unix:", &p)) {
f43e47db 3468 qemu_opt_set(opts, "backend", "socket", &error_abort);
dc523cd3
MA		 3469 qemu_opts_do_parse(opts, p, "path", &local_err);
3470 if (local_err) {
3471 error_report_err(local_err);
aeb2c47a 3472 goto fail;
dc523cd3 3473 }
aeb2c47a
GH		 3474 return opts;
3475 }
48b76496
GH		 3476 if (strstart(filename, "/dev/parport", NULL) ||
3477 strstart(filename, "/dev/ppi", NULL)) {
f43e47db
MA		 3478 qemu_opt_set(opts, "backend", "parport", &error_abort);
3479 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3480 return opts;
3481 }
3482 if (strstart(filename, "/dev/", NULL)) {
f43e47db
MA		 3483 qemu_opt_set(opts, "backend", "tty", &error_abort);
3484 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3485 return opts;
3486 }
191bc01b 3487
aeb2c47a 3488fail:
191bc01b
GH		 3489 qemu_opts_del(opts);
3490 return NULL;
3491}
3492
d0d7708b
DB		 3493static void qemu_chr_parse_common(QemuOpts *opts, ChardevCommon *backend)
3494{
3495 const char *logfile = qemu_opt_get(opts, "logfile");
3496
3497 backend->has_logfile = logfile != NULL;
3498 backend->logfile = logfile ? g_strdup(logfile) : NULL;
3499
3500 backend->has_logappend = true;
3501 backend->logappend = qemu_opt_get_bool(opts, "logappend", false);
3502}
3503
3504
846e2e49
GH		 3505static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
3506 Error **errp)
3507{
3508 const char *path = qemu_opt_get(opts, "path");
3509
3510 if (path == NULL) {
3511 error_setg(errp, "chardev: file: no filename given");
3512 return;
3513 }
130257dc 3514 backend->u.file = g_new0(ChardevFile, 1);
d0d7708b 3515 qemu_chr_parse_common(opts, qapi_ChardevFile_base(backend->u.file));
130257dc 3516 backend->u.file->out = g_strdup(path);
31e38a22
OK		 3517
3518 backend->u.file->has_append = true;
3519 backend->u.file->append = qemu_opt_get_bool(opts, "append", false);
846e2e49
GH		 3520}
3521
7c358031
GH		 3522static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
3523 Error **errp)
3524{
130257dc 3525 backend->u.stdio = g_new0(ChardevStdio, 1);
d0d7708b 3526 qemu_chr_parse_common(opts, qapi_ChardevStdio_base(backend->u.stdio));
130257dc
EB		 3527 backend->u.stdio->has_signal = true;
3528 backend->u.stdio->signal = qemu_opt_get_bool(opts, "signal", true);
7c358031
GH		 3529}
3530
6511d396 3531#ifdef HAVE_CHARDEV_SERIAL
0f1cb51d
GH		 3532static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
3533 Error **errp)
3534{
3535 const char *device = qemu_opt_get(opts, "path");
3536
3537 if (device == NULL) {
3538 error_setg(errp, "chardev: serial/tty: no device path given");
3539 return;
3540 }
130257dc 3541 backend->u.serial = g_new0(ChardevHostdev, 1);
d0d7708b 3542 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(backend->u.serial));
130257dc 3543 backend->u.serial->device = g_strdup(device);
0f1cb51d 3544}
6511d396 3545#endif
0f1cb51d 3546
38bfb1a6 3547#ifdef HAVE_CHARDEV_PARPORT
dc375097
GH		 3548static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
3549 Error **errp)
3550{
3551 const char *device = qemu_opt_get(opts, "path");
3552
3553 if (device == NULL) {
3554 error_setg(errp, "chardev: parallel: no device path given");
3555 return;
3556 }
130257dc 3557 backend->u.parallel = g_new0(ChardevHostdev, 1);
d0d7708b 3558 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(backend->u.parallel));
130257dc 3559 backend->u.parallel->device = g_strdup(device);
dc375097 3560}
38bfb1a6 3561#endif
dc375097 3562
548cbb36
GH		 3563static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
3564 Error **errp)
3565{
3566 const char *device = qemu_opt_get(opts, "path");
3567
3568 if (device == NULL) {
3569 error_setg(errp, "chardev: pipe: no device path given");
3570 return;
3571 }
130257dc 3572 backend->u.pipe = g_new0(ChardevHostdev, 1);
d0d7708b 3573 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(backend->u.pipe));
130257dc 3574 backend->u.pipe->device = g_strdup(device);
548cbb36
GH		 3575}
3576
4f57378f
MA		 3577static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
3578 Error **errp)
1da48c65
GH		 3579{
3580 int val;
3581
130257dc 3582 backend->u.ringbuf = g_new0(ChardevRingbuf, 1);
d0d7708b 3583 qemu_chr_parse_common(opts, qapi_ChardevRingbuf_base(backend->u.ringbuf));
1da48c65 3584
0f953051 3585 val = qemu_opt_get_size(opts, "size", 0);
1da48c65 3586 if (val != 0) {
130257dc
EB		 3587 backend->u.ringbuf->has_size = true;
3588 backend->u.ringbuf->size = val;
1da48c65
GH		 3589 }
3590}
3591
bb6fb7c0
GH		 3592static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend,
3593 Error **errp)
3594{
3595 const char *chardev = qemu_opt_get(opts, "chardev");
3596
3597 if (chardev == NULL) {
3598 error_setg(errp, "chardev: mux: no chardev given");
3599 return;
3600 }
130257dc 3601 backend->u.mux = g_new0(ChardevMux, 1);
d0d7708b 3602 qemu_chr_parse_common(opts, qapi_ChardevMux_base(backend->u.mux));
130257dc 3603 backend->u.mux->chardev = g_strdup(chardev);
bb6fb7c0
GH		 3604}
3605
dafd325d
PM		 3606static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend,
3607 Error **errp)
3608{
3609 bool is_listen = qemu_opt_get_bool(opts, "server", false);
3610 bool is_waitconnect = is_listen && qemu_opt_get_bool(opts, "wait", true);
3611 bool is_telnet = qemu_opt_get_bool(opts, "telnet", false);
3612 bool do_nodelay = !qemu_opt_get_bool(opts, "delay", true);
5dd1f02b 3613 int64_t reconnect = qemu_opt_get_number(opts, "reconnect", 0);
dafd325d
PM		 3614 const char *path = qemu_opt_get(opts, "path");
3615 const char *host = qemu_opt_get(opts, "host");
3616 const char *port = qemu_opt_get(opts, "port");
a8fb5427 3617 const char *tls_creds = qemu_opt_get(opts, "tls-creds");
dafd325d
PM		 3618 SocketAddress *addr;
3619
3620 if (!path) {
3621 if (!host) {
3622 error_setg(errp, "chardev: socket: no host given");
3623 return;
3624 }
3625 if (!port) {
3626 error_setg(errp, "chardev: socket: no port given");
3627 return;
3628 }
a8fb5427
DB		 3629 } else {
3630 if (tls_creds) {
3631 error_setg(errp, "TLS can only be used over TCP socket");
3632 return;
3633 }
dafd325d
PM		 3634 }
3635
130257dc 3636 backend->u.socket = g_new0(ChardevSocket, 1);
d0d7708b 3637 qemu_chr_parse_common(opts, qapi_ChardevSocket_base(backend->u.socket));
dafd325d 3638
130257dc
EB		 3639 backend->u.socket->has_nodelay = true;
3640 backend->u.socket->nodelay = do_nodelay;
3641 backend->u.socket->has_server = true;
3642 backend->u.socket->server = is_listen;
3643 backend->u.socket->has_telnet = true;
3644 backend->u.socket->telnet = is_telnet;
3645 backend->u.socket->has_wait = true;
3646 backend->u.socket->wait = is_waitconnect;
3647 backend->u.socket->has_reconnect = true;
3648 backend->u.socket->reconnect = reconnect;
a8fb5427 3649 backend->u.socket->tls_creds = g_strdup(tls_creds);
dafd325d
PM		 3650
3651 addr = g_new0(SocketAddress, 1);
3652 if (path) {
130257dc
EB		 3653 addr->type = SOCKET_ADDRESS_KIND_UNIX;
3654 addr->u.q_unix = g_new0(UnixSocketAddress, 1);
3655 addr->u.q_unix->path = g_strdup(path);
dafd325d 3656 } else {
130257dc
EB		 3657 addr->type = SOCKET_ADDRESS_KIND_INET;
3658 addr->u.inet = g_new0(InetSocketAddress, 1);
3659 addr->u.inet->host = g_strdup(host);
3660 addr->u.inet->port = g_strdup(port);
3661 addr->u.inet->has_to = qemu_opt_get(opts, "to");
3662 addr->u.inet->to = qemu_opt_get_number(opts, "to", 0);
3663 addr->u.inet->has_ipv4 = qemu_opt_get(opts, "ipv4");
3664 addr->u.inet->ipv4 = qemu_opt_get_bool(opts, "ipv4", 0);
3665 addr->u.inet->has_ipv6 = qemu_opt_get(opts, "ipv6");
3666 addr->u.inet->ipv6 = qemu_opt_get_bool(opts, "ipv6", 0);
dafd325d 3667 }
130257dc 3668 backend->u.socket->addr = addr;
dafd325d
PM		 3669}
3670
90a14bfe
PM		 3671static void qemu_chr_parse_udp(QemuOpts *opts, ChardevBackend *backend,
3672 Error **errp)
3673{
3674 const char *host = qemu_opt_get(opts, "host");
3675 const char *port = qemu_opt_get(opts, "port");
3676 const char *localaddr = qemu_opt_get(opts, "localaddr");
3677 const char *localport = qemu_opt_get(opts, "localport");
3678 bool has_local = false;
3679 SocketAddress *addr;
3680
3681 if (host == NULL || strlen(host) == 0) {
3682 host = "localhost";
3683 }
3684 if (port == NULL || strlen(port) == 0) {
3685 error_setg(errp, "chardev: udp: remote port not specified");
3686 return;
3687 }
3688 if (localport == NULL || strlen(localport) == 0) {
3689 localport = "0";
3690 } else {
3691 has_local = true;
3692 }
3693 if (localaddr == NULL || strlen(localaddr) == 0) {
3694 localaddr = "";
3695 } else {
3696 has_local = true;
3697 }
3698
130257dc 3699 backend->u.udp = g_new0(ChardevUdp, 1);
d0d7708b 3700 qemu_chr_parse_common(opts, qapi_ChardevUdp_base(backend->u.udp));
90a14bfe
PM		 3701
3702 addr = g_new0(SocketAddress, 1);
130257dc
EB		 3703 addr->type = SOCKET_ADDRESS_KIND_INET;
3704 addr->u.inet = g_new0(InetSocketAddress, 1);
3705 addr->u.inet->host = g_strdup(host);
3706 addr->u.inet->port = g_strdup(port);
3707 addr->u.inet->has_ipv4 = qemu_opt_get(opts, "ipv4");
3708 addr->u.inet->ipv4 = qemu_opt_get_bool(opts, "ipv4", 0);
3709 addr->u.inet->has_ipv6 = qemu_opt_get(opts, "ipv6");
3710 addr->u.inet->ipv6 = qemu_opt_get_bool(opts, "ipv6", 0);
3711 backend->u.udp->remote = addr;
90a14bfe
PM		 3712
3713 if (has_local) {
130257dc 3714 backend->u.udp->has_local = true;
90a14bfe 3715 addr = g_new0(SocketAddress, 1);
130257dc
EB		 3716 addr->type = SOCKET_ADDRESS_KIND_INET;
3717 addr->u.inet = g_new0(InetSocketAddress, 1);
3718 addr->u.inet->host = g_strdup(localaddr);
3719 addr->u.inet->port = g_strdup(localport);
3720 backend->u.udp->local = addr;
90a14bfe
PM		 3721 }
3722}
3723
d654f34e 3724typedef struct CharDriver {
191bc01b 3725 const char *name;
99aec012 3726 ChardevBackendKind kind;
2c5f4882 3727 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
4ca17281
PB		 3728 CharDriverState *(*create)(const char *id, ChardevBackend *backend,
3729 ChardevReturn *ret, Error **errp);
d654f34e
AL		 3730} CharDriver;
3731
3732static GSList *backends;
3733
e4d50d47 3734void register_char_driver(const char *name, ChardevBackendKind kind,
4ca17281
PB		 3735 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp),
3736 CharDriverState *(*create)(const char *id, ChardevBackend *backend,
3737 ChardevReturn *ret, Error **errp))
2c5f4882
GH		 3738{
3739 CharDriver *s;
3740
3741 s = g_malloc0(sizeof(*s));
3742 s->name = g_strdup(name);
3743 s->kind = kind;
3744 s->parse = parse;
4ca17281 3745 s->create = create;
2c5f4882
GH		 3746
3747 backends = g_slist_append(backends, s);
3748}
3749
f69554b9 3750CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
bd2d80b2
GH		 3751 void (*init)(struct CharDriverState *s),
3752 Error **errp)
191bc01b 3753{
0aff637e 3754 Error *local_err = NULL;
d654f34e 3755 CharDriver *cd;
191bc01b 3756 CharDriverState *chr;
d654f34e 3757 GSList *i;
a61ae7f8
PM		 3758 ChardevReturn *ret = NULL;
3759 ChardevBackend *backend;
3760 const char *id = qemu_opts_id(opts);
3761 char *bid = NULL;
191bc01b 3762
a61ae7f8 3763 if (id == NULL) {
312fd5f2 3764 error_setg(errp, "chardev: no id specified");
2274ae9d 3765 goto err;
191bc01b
GH		 3766 }
3767
1bbd185f 3768 if (qemu_opt_get(opts, "backend") == NULL) {
312fd5f2 3769 error_setg(errp, "chardev: \"%s\" missing backend",
bd2d80b2 3770 qemu_opts_id(opts));
2274ae9d 3771 goto err;
1bbd185f 3772 }
d654f34e
AL		 3773 for (i = backends; i; i = i->next) {
3774 cd = i->data;
3775
3776 if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) {
191bc01b 3777 break;
d654f34e 3778 }
191bc01b 3779 }
d654f34e 3780 if (i == NULL) {
312fd5f2 3781 error_setg(errp, "chardev: backend \"%s\" not found",
bd2d80b2 3782 qemu_opt_get(opts, "backend"));
e668287d 3783 goto err;
191bc01b
GH		 3784 }
3785
a61ae7f8 3786 backend = g_new0(ChardevBackend, 1);
edb2fb3c 3787
a61ae7f8
PM		 3788 if (qemu_opt_get_bool(opts, "mux", 0)) {
3789 bid = g_strdup_printf("%s-base", id);
3790 }
2c5f4882 3791
a61ae7f8 3792 chr = NULL;
130257dc 3793 backend->type = cd->kind;
a61ae7f8
PM		 3794 if (cd->parse) {
3795 cd->parse(opts, backend, &local_err);
3796 if (local_err) {
3797 error_propagate(errp, local_err);
2c5f4882
GH		 3798 goto qapi_out;
3799 }
d0d7708b
DB		 3800 } else {
3801 ChardevCommon *cc = g_new0(ChardevCommon, 1);
3802 qemu_chr_parse_common(opts, cc);
3803 backend->u.data = cc;
2c5f4882 3804 }
d0d7708b 3805
a61ae7f8
PM		 3806 ret = qmp_chardev_add(bid ? bid : id, backend, errp);
3807 if (!ret) {
3808 goto qapi_out;
191bc01b
GH		 3809 }
3810
a61ae7f8
PM		 3811 if (bid) {
3812 qapi_free_ChardevBackend(backend);
3813 qapi_free_ChardevReturn(ret);
3814 backend = g_new0(ChardevBackend, 1);
130257dc
EB		 3815 backend->u.mux = g_new0(ChardevMux, 1);
3816 backend->type = CHARDEV_BACKEND_KIND_MUX;
3817 backend->u.mux->chardev = g_strdup(bid);
a61ae7f8
PM		 3818 ret = qmp_chardev_add(id, backend, errp);
3819 if (!ret) {
3820 chr = qemu_chr_find(bid);
3821 qemu_chr_delete(chr);
3822 chr = NULL;
3823 goto qapi_out;
3824 }
bd5c51ee 3825 }
7591c5c1 3826
a61ae7f8 3827 chr = qemu_chr_find(id);
2274ae9d 3828 chr->opts = opts;
a61ae7f8
PM		 3829
3830qapi_out:
3831 qapi_free_ChardevBackend(backend);
3832 qapi_free_ChardevReturn(ret);
3833 g_free(bid);
191bc01b 3834 return chr;
2274ae9d
GH		 3835
3836err:
3837 qemu_opts_del(opts);
3838 return NULL;
191bc01b
GH		 3839}
3840
27143a44 3841CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
6f97dba0
AL		 3842{
3843 const char *p;
3844 CharDriverState *chr;
191bc01b 3845 QemuOpts *opts;
bd2d80b2 3846 Error *err = NULL;
191bc01b 3847
c845f401
GH		 3848 if (strstart(filename, "chardev:", &p)) {
3849 return qemu_chr_find(p);
3850 }
3851
191bc01b 3852 opts = qemu_chr_parse_compat(label, filename);
7e1b35b4
GH		 3853 if (!opts)
3854 return NULL;
6f97dba0 3855
bd2d80b2 3856 chr = qemu_chr_new_from_opts(opts, init, &err);
84d18f06 3857 if (err) {
565f65d2 3858 error_report_err(err);
bd2d80b2 3859 }
7e1b35b4 3860 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
456d6069 3861 qemu_chr_fe_claim_no_fail(chr);
7e1b35b4 3862 monitor_init(chr, MONITOR_USE_READLINE);
6f97dba0
AL		 3863 }
3864 return chr;
3865}
3866
15f31519 3867void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo)
c48855e1
PB		 3868{
3869 if (chr->chr_set_echo) {
3870 chr->chr_set_echo(chr, echo);
3871 }
3872}
3873
8e25daa8 3874void qemu_chr_fe_set_open(struct CharDriverState *chr, int fe_open)
7c32c4fe 3875{
8e25daa8 3876 if (chr->fe_open == fe_open) {
c0c4bd2c
HG		 3877 return;
3878 }
8e25daa8 3879 chr->fe_open = fe_open;
574b711a
HG		 3880 if (chr->chr_set_fe_open) {
3881 chr->chr_set_fe_open(chr, fe_open);
7c32c4fe
HG		 3882 }
3883}
3884
d61b0c9a
MAL		 3885void qemu_chr_fe_event(struct CharDriverState *chr, int event)
3886{
3887 if (chr->chr_fe_event) {
3888 chr->chr_fe_event(chr, event);
3889 }
3890}
3891
2c8a5942
KW		 3892int qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond,
3893 GIOFunc func, void *user_data)
23673ca7
AL		 3894{
3895 GSource *src;
3896 guint tag;
3897
3898 if (s->chr_add_watch == NULL) {
3899 return -ENOSYS;
3900 }
3901
3902 src = s->chr_add_watch(s, cond);
62c339c5
PB		 3903 if (!src) {
3904 return -EINVAL;
3905 }
3906
23673ca7
AL		 3907 g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
3908 tag = g_source_attach(src, NULL);
3909 g_source_unref(src);
3910
3911 return tag;
3912}
3913
44c473de
HG		 3914int qemu_chr_fe_claim(CharDriverState *s)
3915{
3916 if (s->avail_connections < 1) {
3917 return -1;
3918 }
3919 s->avail_connections--;
3920 return 0;
3921}
3922
3923void qemu_chr_fe_claim_no_fail(CharDriverState *s)
3924{
3925 if (qemu_chr_fe_claim(s) != 0) {
3926 fprintf(stderr, "%s: error chardev \"%s\" already used\n",
3927 __func__, s->label);
3928 exit(1);
3929 }
3930}
3931
3932void qemu_chr_fe_release(CharDriverState *s)
3933{
3934 s->avail_connections++;
3935}
3936
d0d7708b 3937static void qemu_chr_free_common(CharDriverState *chr)
6f97dba0 3938{
7267c094
AL		 3939 g_free(chr->filename);
3940 g_free(chr->label);
4ad60880 3941 qemu_opts_del(chr->opts);
d0d7708b
DB		 3942 if (chr->logfd != -1) {
3943 close(chr->logfd);
3944 }
fefd749c 3945 qemu_mutex_destroy(&chr->chr_write_lock);
7267c094 3946 g_free(chr);
6f97dba0
AL		 3947}
3948
d0d7708b
DB		 3949void qemu_chr_free(CharDriverState *chr)
3950{
3951 if (chr->chr_close) {
3952 chr->chr_close(chr);
3953 }
3954 qemu_chr_free_common(chr);
3955}
3956
1ad78ea5
MAL		 3957void qemu_chr_delete(CharDriverState *chr)
3958{
3959 QTAILQ_REMOVE(&chardevs, chr, next);
3960 qemu_chr_free(chr);
3961}
3962
c5a415a0 3963ChardevInfoList *qmp_query_chardev(Error **errp)
6f97dba0 3964{
c5a415a0 3965 ChardevInfoList *chr_list = NULL;
6f97dba0
AL		 3966 CharDriverState *chr;
3967
72cf2d4f 3968 QTAILQ_FOREACH(chr, &chardevs, next) {
c5a415a0
LC		 3969 ChardevInfoList *info = g_malloc0(sizeof(*info));
3970 info->value = g_malloc0(sizeof(*info->value));
3971 info->value->label = g_strdup(chr->label);
3972 info->value->filename = g_strdup(chr->filename);
32a97ea1 3973 info->value->frontend_open = chr->fe_open;
c5a415a0
LC		 3974
3975 info->next = chr_list;
3976 chr_list = info;
6f97dba0 3977 }
588b3832 3978
c5a415a0 3979 return chr_list;
6f97dba0 3980}
c845f401 3981
77d1c3c6
MK		 3982ChardevBackendInfoList *qmp_query_chardev_backends(Error **errp)
3983{
3984 ChardevBackendInfoList *backend_list = NULL;
3985 CharDriver *c = NULL;
3986 GSList *i = NULL;
3987
3988 for (i = backends; i; i = i->next) {
3989 ChardevBackendInfoList *info = g_malloc0(sizeof(*info));
3990 c = i->data;
3991 info->value = g_malloc0(sizeof(*info->value));
3992 info->value->name = g_strdup(c->name);
3993
3994 info->next = backend_list;
3995 backend_list = info;
3996 }
3997
3998 return backend_list;
3999}
4000
c845f401
GH		 4001CharDriverState *qemu_chr_find(const char *name)
4002{
4003 CharDriverState *chr;
4004
72cf2d4f 4005 QTAILQ_FOREACH(chr, &chardevs, next) {
c845f401
GH		 4006 if (strcmp(chr->label, name) != 0)
4007 continue;
4008 return chr;
4009 }
4010 return NULL;
4011}
0beb4942
AL		 4012
4013/* Get a character (serial) device interface. */
4014CharDriverState *qemu_char_get_next_serial(void)
4015{
4016 static int next_serial;
456d6069 4017 CharDriverState *chr;
0beb4942
AL		 4018
4019 /* FIXME: This function needs to go away: use chardev properties! */
456d6069
HG		 4020
4021 while (next_serial < MAX_SERIAL_PORTS && serial_hds[next_serial]) {
4022 chr = serial_hds[next_serial++];
4023 qemu_chr_fe_claim_no_fail(chr);
4024 return chr;
4025 }
4026 return NULL;
0beb4942
AL		 4027}
4028
4d454574
PB		 4029QemuOptsList qemu_chardev_opts = {
4030 .name = "chardev",
4031 .implied_opt_name = "backend",
4032 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
4033 .desc = {
4034 {
4035 .name = "backend",
4036 .type = QEMU_OPT_STRING,
4037 },{
4038 .name = "path",
4039 .type = QEMU_OPT_STRING,
4040 },{
4041 .name = "host",
4042 .type = QEMU_OPT_STRING,
4043 },{
4044 .name = "port",
4045 .type = QEMU_OPT_STRING,
4046 },{
4047 .name = "localaddr",
4048 .type = QEMU_OPT_STRING,
4049 },{
4050 .name = "localport",
4051 .type = QEMU_OPT_STRING,
4052 },{
4053 .name = "to",
4054 .type = QEMU_OPT_NUMBER,
4055 },{
4056 .name = "ipv4",
4057 .type = QEMU_OPT_BOOL,
4058 },{
4059 .name = "ipv6",
4060 .type = QEMU_OPT_BOOL,
4061 },{
4062 .name = "wait",
4063 .type = QEMU_OPT_BOOL,
4064 },{
4065 .name = "server",
4066 .type = QEMU_OPT_BOOL,
4067 },{
4068 .name = "delay",
4069 .type = QEMU_OPT_BOOL,
5dd1f02b
CM		 4070 },{
4071 .name = "reconnect",
4072 .type = QEMU_OPT_NUMBER,
4d454574
PB		 4073 },{
4074 .name = "telnet",
4075 .type = QEMU_OPT_BOOL,
a8fb5427
DB		 4076 },{
4077 .name = "tls-creds",
4078 .type = QEMU_OPT_STRING,
4d454574
PB		 4079 },{
4080 .name = "width",
4081 .type = QEMU_OPT_NUMBER,
4082 },{
4083 .name = "height",
4084 .type = QEMU_OPT_NUMBER,
4085 },{
4086 .name = "cols",
4087 .type = QEMU_OPT_NUMBER,
4088 },{
4089 .name = "rows",
4090 .type = QEMU_OPT_NUMBER,
4091 },{
4092 .name = "mux",
4093 .type = QEMU_OPT_BOOL,
4094 },{
4095 .name = "signal",
4096 .type = QEMU_OPT_BOOL,
4097 },{
4098 .name = "name",
4099 .type = QEMU_OPT_STRING,
4100 },{
4101 .name = "debug",
4102 .type = QEMU_OPT_NUMBER,
51767e7c 4103 },{
3949e594 4104 .name = "size",
de1cc36e 4105 .type = QEMU_OPT_SIZE,
bb6fb7c0
GH		 4106 },{
4107 .name = "chardev",
4108 .type = QEMU_OPT_STRING,
31e38a22
OK		 4109 },{
4110 .name = "append",
4111 .type = QEMU_OPT_BOOL,
d0d7708b
DB		 4112 },{
4113 .name = "logfile",
4114 .type = QEMU_OPT_STRING,
4115 },{
4116 .name = "logappend",
4117 .type = QEMU_OPT_BOOL,
4d454574
PB		 4118 },
4119 { /* end of list */ }
4120 },
4121};
f1a1a356 4122
ffbdbe59
GH		 4123#ifdef _WIN32
4124
fd5b036c
PB		 4125static CharDriverState *qmp_chardev_open_file(const char *id,
4126 ChardevBackend *backend,
4127 ChardevReturn *ret,
4128 Error **errp)
ffbdbe59 4129{
130257dc 4130 ChardevFile *file = backend->u.file;
d0d7708b 4131 ChardevCommon *common = qapi_ChardevFile_base(backend->u.file);
ffbdbe59
GH		 4132 HANDLE out;
4133
e859eda5 4134 if (file->has_in) {
ffbdbe59
GH		 4135 error_setg(errp, "input file not supported");
4136 return NULL;
4137 }
4138
4139 out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
4140 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
4141 if (out == INVALID_HANDLE_VALUE) {
4142 error_setg(errp, "open %s failed", file->out);
4143 return NULL;
4144 }
d0d7708b 4145 return qemu_chr_open_win_file(out, common, errp);
ffbdbe59
GH		 4146}
4147
6511d396
PB		 4148static CharDriverState *qmp_chardev_open_serial(const char *id,
4149 ChardevBackend *backend,
4150 ChardevReturn *ret,
d36b2b90 4151 Error **errp)
d59044ef 4152{
130257dc 4153 ChardevHostdev *serial = backend->u.serial;
d0d7708b
DB		 4154 ChardevCommon *common = qapi_ChardevHostdev_base(backend->u.serial);
4155 return qemu_chr_open_win_path(serial->device, common, errp);
d36b2b90
MA		 4156}
4157
ffbdbe59
GH		 4158#else /* WIN32 */
4159
4160static int qmp_chardev_open_file_source(char *src, int flags,
4161 Error **errp)
4162{
4163 int fd = -1;
4164
4165 TFR(fd = qemu_open(src, flags, 0666));
4166 if (fd == -1) {
20c39760 4167 error_setg_file_open(errp, errno, src);
ffbdbe59
GH		 4168 }
4169 return fd;
4170}
4171
fd5b036c
PB		 4172static CharDriverState *qmp_chardev_open_file(const char *id,
4173 ChardevBackend *backend,
4174 ChardevReturn *ret,
4175 Error **errp)
ffbdbe59 4176{
130257dc 4177 ChardevFile *file = backend->u.file;
d0d7708b 4178 ChardevCommon *common = qapi_ChardevFile_base(backend->u.file);
5f758366 4179 int flags, in = -1, out;
ffbdbe59 4180
31e38a22
OK		 4181 flags = O_WRONLY | O_CREAT | O_BINARY;
4182 if (file->has_append && file->append) {
4183 flags |= O_APPEND;
4184 } else {
4185 flags |= O_TRUNC;
4186 }
4187
ffbdbe59 4188 out = qmp_chardev_open_file_source(file->out, flags, errp);
5f758366 4189 if (out < 0) {
ffbdbe59
GH		 4190 return NULL;
4191 }
4192
e859eda5 4193 if (file->has_in) {
ffbdbe59
GH		 4194 flags = O_RDONLY;
4195 in = qmp_chardev_open_file_source(file->in, flags, errp);
5f758366 4196 if (in < 0) {
ffbdbe59
GH		 4197 qemu_close(out);
4198 return NULL;
4199 }
4200 }
4201
d0d7708b 4202 return qemu_chr_open_fd(in, out, common, errp);
ffbdbe59
GH		 4203}
4204
d809ab95 4205#ifdef HAVE_CHARDEV_SERIAL
6511d396
PB		 4206static CharDriverState *qmp_chardev_open_serial(const char *id,
4207 ChardevBackend *backend,
4208 ChardevReturn *ret,
d36b2b90 4209 Error **errp)
d59044ef 4210{
130257dc 4211 ChardevHostdev *serial = backend->u.serial;
d0d7708b 4212 ChardevCommon *common = qapi_ChardevHostdev_base(backend->u.serial);
d36b2b90
MA		 4213 int fd;
4214
4215 fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
5f758366 4216 if (fd < 0) {
d36b2b90 4217 return NULL;
39099991 4218 }
f9e8cacc 4219 qemu_set_nonblock(fd);
d0d7708b 4220 return qemu_chr_open_tty_fd(fd, common, errp);
d36b2b90 4221}
6511d396 4222#endif
d36b2b90 4223
d809ab95 4224#ifdef HAVE_CHARDEV_PARPORT
38bfb1a6
PB		 4225static CharDriverState *qmp_chardev_open_parallel(const char *id,
4226 ChardevBackend *backend,
4227 ChardevReturn *ret,
d36b2b90
MA		 4228 Error **errp)
4229{
130257dc 4230 ChardevHostdev *parallel = backend->u.parallel;
d0d7708b 4231 ChardevCommon *common = qapi_ChardevHostdev_base(backend->u.parallel);
d36b2b90
MA		 4232 int fd;
4233
4234 fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
5f758366 4235 if (fd < 0) {
d59044ef
GH		 4236 return NULL;
4237 }
d0d7708b 4238 return qemu_chr_open_pp_fd(fd, common, errp);
d59044ef 4239}
d809ab95 4240#endif
d59044ef 4241
ffbdbe59
GH		 4242#endif /* WIN32 */
4243
5008e5b7
CM		 4244static void socket_try_connect(CharDriverState *chr)
4245{
4246 Error *err = NULL;
4247
4248 if (!qemu_chr_open_socket_fd(chr, &err)) {
4249 check_report_connect_error(chr, err);
4250 }
4251}
4252
5dd1f02b
CM		 4253static gboolean socket_reconnect_timeout(gpointer opaque)
4254{
4255 CharDriverState *chr = opaque;
4256 TCPCharDriver *s = chr->opaque;
5dd1f02b
CM		 4257
4258 s->reconnect_timer = 0;
4259
4260 if (chr->be_open) {
4261 return false;
4262 }
4263
5008e5b7 4264 socket_try_connect(chr);
5dd1f02b
CM		 4265
4266 return false;
4267}
4268
dbba8d1b
PB		 4269static CharDriverState *qmp_chardev_open_socket(const char *id,
4270 ChardevBackend *backend,
4271 ChardevReturn *ret,
f6bd5d6e
GH		 4272 Error **errp)
4273{
43ded1a0
CM		 4274 CharDriverState *chr;
4275 TCPCharDriver *s;
130257dc 4276 ChardevSocket *sock = backend->u.socket;
f6bd5d6e
GH		 4277 SocketAddress *addr = sock->addr;
4278 bool do_nodelay = sock->has_nodelay ? sock->nodelay : false;
4279 bool is_listen = sock->has_server ? sock->server : true;
4280 bool is_telnet = sock->has_telnet ? sock->telnet : false;
4281 bool is_waitconnect = sock->has_wait ? sock->wait : false;
5dd1f02b 4282 int64_t reconnect = sock->has_reconnect ? sock->reconnect : 0;
d0d7708b 4283 ChardevCommon *common = qapi_ChardevSocket_base(backend->u.socket);
43ded1a0 4284
d0d7708b
DB		 4285 chr = qemu_chr_alloc(common, errp);
4286 if (!chr) {
4287 return NULL;
4288 }
2d528d45 4289 s = g_new0(TCPCharDriver, 1);
43ded1a0 4290
130257dc 4291 s->is_unix = addr->type == SOCKET_ADDRESS_KIND_UNIX;
cfb429cb
CM		 4292 s->is_listen = is_listen;
4293 s->is_telnet = is_telnet;
43ded1a0 4294 s->do_nodelay = do_nodelay;
a8fb5427
DB		 4295 if (sock->tls_creds) {
4296 Object *creds;
4297 creds = object_resolve_path_component(
4298 object_get_objects_root(), sock->tls_creds);
4299 if (!creds) {
4300 error_setg(errp, "No TLS credentials with id '%s'",
4301 sock->tls_creds);
4302 goto error;
4303 }
4304 s->tls_creds = (QCryptoTLSCreds *)
4305 object_dynamic_cast(creds,
4306 TYPE_QCRYPTO_TLS_CREDS);
4307 if (!s->tls_creds) {
4308 error_setg(errp, "Object with id '%s' is not TLS credentials",
4309 sock->tls_creds);
4310 goto error;
4311 }
4312 object_ref(OBJECT(s->tls_creds));
4313 if (is_listen) {
4314 if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_SERVER) {
4315 error_setg(errp, "%s",
4316 "Expected TLS credentials for server endpoint");
4317 goto error;
4318 }
4319 } else {
4320 if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT) {
4321 error_setg(errp, "%s",
4322 "Expected TLS credentials for client endpoint");
4323 goto error;
4324 }
4325 }
4326 }
4327
cfb429cb 4328 qapi_copy_SocketAddress(&s->addr, sock->addr);
43ded1a0
CM		 4329
4330 chr->opaque = s;
4331 chr->chr_write = tcp_chr_write;
4332 chr->chr_sync_read = tcp_chr_sync_read;
4333 chr->chr_close = tcp_chr_close;
4334 chr->get_msgfds = tcp_get_msgfds;
4335 chr->set_msgfds = tcp_set_msgfds;
4336 chr->chr_add_client = tcp_chr_add_client;
4337 chr->chr_add_watch = tcp_chr_add_watch;
4338 chr->chr_update_read_handler = tcp_chr_update_read_handler;
4339 /* be isn't opened until we get a connection */
4340 chr->explicit_be_open = true;
4341
0ff0fad2
DB		 4342 chr->filename = SocketAddress_to_str("disconnected:",
4343 addr, is_listen, is_telnet);
f6bd5d6e
GH		 4344
4345 if (is_listen) {
43ded1a0
CM		 4346 if (is_telnet) {
4347 s->do_telnetopt = 1;
4348 }
5dd1f02b
CM		 4349 } else if (reconnect > 0) {
4350 s->reconnect_time = reconnect;
f6bd5d6e 4351 }
43ded1a0 4352
5008e5b7
CM		 4353 if (s->reconnect_time) {
4354 socket_try_connect(chr);
4355 } else if (!qemu_chr_open_socket_fd(chr, errp)) {
a8fb5427 4356 goto error;
f6bd5d6e 4357 }
43ded1a0
CM		 4358
4359 if (is_listen && is_waitconnect) {
4360 fprintf(stderr, "QEMU waiting for connection on: %s\n",
4361 chr->filename);
9894dc0c
DB		 4362 tcp_chr_accept(QIO_CHANNEL(s->listen_ioc), G_IO_IN, chr);
4363 qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), false, NULL);
43ded1a0
CM		 4364 }
4365
4366 return chr;
a8fb5427
DB		 4367
4368 error:
4369 if (s->tls_creds) {
4370 object_unref(OBJECT(s->tls_creds));
4371 }
4372 g_free(s);
4373 qemu_chr_free_common(chr);
4374 return NULL;
f6bd5d6e
GH		 4375}
4376
e79b80da
PB		 4377static CharDriverState *qmp_chardev_open_udp(const char *id,
4378 ChardevBackend *backend,
4379 ChardevReturn *ret,
08d0ab3f 4380 Error **errp)
3ecc059d 4381{
130257dc 4382 ChardevUdp *udp = backend->u.udp;
d0d7708b 4383 ChardevCommon *common = qapi_ChardevUdp_base(backend->u.udp);
9894dc0c 4384 QIOChannelSocket *sioc = qio_channel_socket_new();
3ecc059d 4385
9894dc0c 4386 if (qio_channel_socket_dgram_sync(sioc,
150dcd1a 4387 udp->local, udp->remote,
9894dc0c
DB		 4388 errp) < 0) {
4389 object_unref(OBJECT(sioc));
3ecc059d
GH		 4390 return NULL;
4391 }
9894dc0c 4392 return qemu_chr_open_udp(sioc, common, errp);
3ecc059d
GH		 4393}
4394
f1a1a356
GH		 4395ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
4396 Error **errp)
4397{
4398 ChardevReturn *ret = g_new0(ChardevReturn, 1);
3c0e5a4a 4399 CharDriverState *chr = NULL;
eaeba653 4400 Error *local_err = NULL;
4ca17281
PB		 4401 GSList *i;
4402 CharDriver *cd;
f1a1a356
GH		 4403
4404 chr = qemu_chr_find(id);
4405 if (chr) {
4406 error_setg(errp, "Chardev '%s' already exists", id);
4407 g_free(ret);
4408 return NULL;
4409 }
4410
4ca17281
PB		 4411 for (i = backends; i; i = i->next) {
4412 cd = i->data;
4413
130257dc 4414 if (cd->kind == backend->type) {
4ca17281
PB		 4415 chr = cd->create(id, backend, ret, &local_err);
4416 if (local_err) {
4417 error_propagate(errp, local_err);
4418 goto out_error;
4419 }
4420 break;
4421 }
4422 }
4423
4424 if (chr == NULL) {
1c3af0f4
PB		 4425 assert(!i);
4426 error_setg(errp, "chardev backend not available");
4427 goto out_error;
eaeba653
PB		 4428 }
4429
4430 chr->label = g_strdup(id);
4431 chr->avail_connections =
130257dc 4432 (backend->type == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1;
eaeba653 4433 if (!chr->filename) {
130257dc 4434 chr->filename = g_strdup(ChardevBackendKind_lookup[backend->type]);
f1a1a356 4435 }
eaeba653
PB		 4436 if (!chr->explicit_be_open) {
4437 qemu_chr_be_event(chr, CHR_EVENT_OPENED);
4438 }
4439 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
4440 return ret;
4441
4442out_error:
4443 g_free(ret);
4444 return NULL;
f1a1a356
GH		 4445}
4446
4447void qmp_chardev_remove(const char *id, Error **errp)
4448{
4449 CharDriverState *chr;
4450
4451 chr = qemu_chr_find(id);
8108fd3e 4452 if (chr == NULL) {
f1a1a356
GH		 4453 error_setg(errp, "Chardev '%s' not found", id);
4454 return;
4455 }
4456 if (chr->chr_can_read || chr->chr_read ||
4457 chr->chr_event || chr->handler_opaque) {
4458 error_setg(errp, "Chardev '%s' is busy", id);
4459 return;
4460 }
4461 qemu_chr_delete(chr);
4462}
d654f34e
AL		 4463
4464static void register_types(void)
4465{
4ca17281 4466 register_char_driver("null", CHARDEV_BACKEND_KIND_NULL, NULL,
0d64992b 4467 qemu_chr_open_null);
e4d50d47 4468 register_char_driver("socket", CHARDEV_BACKEND_KIND_SOCKET,
dbba8d1b 4469 qemu_chr_parse_socket, qmp_chardev_open_socket);
4ca17281 4470 register_char_driver("udp", CHARDEV_BACKEND_KIND_UDP, qemu_chr_parse_udp,
e79b80da 4471 qmp_chardev_open_udp);
e4d50d47 4472 register_char_driver("ringbuf", CHARDEV_BACKEND_KIND_RINGBUF,
479f09a1 4473 qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf);
e4d50d47 4474 register_char_driver("file", CHARDEV_BACKEND_KIND_FILE,
fd5b036c 4475 qemu_chr_parse_file_out, qmp_chardev_open_file);
e4d50d47 4476 register_char_driver("stdio", CHARDEV_BACKEND_KIND_STDIO,
8c84b25d 4477 qemu_chr_parse_stdio, qemu_chr_open_stdio);
6511d396 4478#if defined HAVE_CHARDEV_SERIAL
e4d50d47 4479 register_char_driver("serial", CHARDEV_BACKEND_KIND_SERIAL,
6511d396 4480 qemu_chr_parse_serial, qmp_chardev_open_serial);
e4d50d47 4481 register_char_driver("tty", CHARDEV_BACKEND_KIND_SERIAL,
6511d396
PB		 4482 qemu_chr_parse_serial, qmp_chardev_open_serial);
4483#endif
38bfb1a6 4484#ifdef HAVE_CHARDEV_PARPORT
e4d50d47 4485 register_char_driver("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
38bfb1a6 4486 qemu_chr_parse_parallel, qmp_chardev_open_parallel);
e4d50d47 4487 register_char_driver("parport", CHARDEV_BACKEND_KIND_PARALLEL,
38bfb1a6
PB		 4488 qemu_chr_parse_parallel, qmp_chardev_open_parallel);
4489#endif
c2e75a43 4490#ifdef HAVE_CHARDEV_PTY
4ca17281 4491 register_char_driver("pty", CHARDEV_BACKEND_KIND_PTY, NULL,
c2e75a43
PB		 4492 qemu_chr_open_pty);
4493#endif
122e5ed4 4494#ifdef _WIN32
4ca17281 4495 register_char_driver("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL,
122e5ed4
PB		 4496 qemu_chr_open_win_con);
4497#endif
e4d50d47 4498 register_char_driver("pipe", CHARDEV_BACKEND_KIND_PIPE,
20cbe7a2 4499 qemu_chr_parse_pipe, qemu_chr_open_pipe);
4ca17281 4500 register_char_driver("mux", CHARDEV_BACKEND_KIND_MUX, qemu_chr_parse_mux,
3c0e5a4a 4501 qemu_chr_open_mux);
c11ed966 4502 /* Bug-compatibility: */
e4d50d47 4503 register_char_driver("memory", CHARDEV_BACKEND_KIND_MEMORY,
479f09a1 4504 qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf);
7b7ab18d
MR		 4505 /* this must be done after machine init, since we register FEs with muxes
4506 * as part of realize functions like serial_isa_realizefn when -nographic
4507 * is specified
4508 */
4509 qemu_add_machine_init_done_notifier(&muxes_realize_notify);
d654f34e
AL		 4510}
4511
4512type_init(register_types);
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