]> git.ipfire.org Git - thirdparty/qemu.git/blame - qemu-char.c
projects / thirdparty / qemu.git / blame
? search:
summary | shortlog | log | commit | commitdiff | tree
blob | blame (incremental) | history | HEAD
char: add chr_wait_connected callback
[thirdparty/qemu.git] / qemu-char.c
CommitLineData
6f97dba0
AL		 1/*
2 * QEMU System Emulator
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
d38ea87a 24#include "qemu/osdep.h"
6f97dba0 25#include "qemu-common.h"
f348b6d1 26#include "qemu/cutils.h"
83c9089e 27#include "monitor/monitor.h"
9c17d615 28#include "sysemu/sysemu.h"
da31d594 29#include "sysemu/block-backend.h"
d49b6836 30#include "qemu/error-report.h"
1de7afc9 31#include "qemu/timer.h"
dccfcd0e 32#include "sysemu/char.h"
cf3ebac7 33#include "hw/usb.h"
c5a415a0 34#include "qmp-commands.h"
37f9e0a2 35#include "qapi/clone-visitor.h"
cfb429cb 36#include "qapi-visit.h"
e9cf2fe0 37#include "qemu/base64.h"
9894dc0c
DB		 38#include "io/channel-socket.h"
39#include "io/channel-file.h"
a8fb5427 40#include "io/channel-tls.h"
33577b47 41#include "sysemu/replay.h"
6f97dba0 42
6f97dba0
AL		 43#include <zlib.h>
44
45#ifndef _WIN32
46#include <sys/times.h>
47#include <sys/wait.h>
48#include <termios.h>
6f97dba0 49#include <sys/ioctl.h>
24646c7e 50#include <sys/resource.h>
6f97dba0
AL		 51#include <sys/socket.h>
52#include <netinet/in.h>
24646c7e 53#include <net/if.h>
24646c7e 54#include <arpa/inet.h>
6f97dba0
AL		 55#include <netdb.h>
56#include <sys/select.h>
71e72a19 57#ifdef CONFIG_BSD
3294ce18
MT		 58#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
59#include <dev/ppbus/ppi.h>
60#include <dev/ppbus/ppbconf.h>
c5e97233 61#elif defined(__DragonFly__)
c5e97233
BS		 62#include <dev/misc/ppi/ppi.h>
63#include <bus/ppbus/ppbconf.h>
6f97dba0 64#endif
bbe813a2 65#else
6f97dba0 66#ifdef __linux__
6f97dba0
AL		 67#include <linux/ppdev.h>
68#include <linux/parport.h>
69#endif
70#ifdef __sun__
6f97dba0
AL		 71#include <sys/ethernet.h>
72#include <sys/sockio.h>
73#include <netinet/arp.h>
74#include <netinet/in.h>
75#include <netinet/in_systm.h>
76#include <netinet/ip.h>
77#include <netinet/ip_icmp.h> // must come after ip.h
78#include <netinet/udp.h>
79#include <netinet/tcp.h>
6f97dba0
AL		 80#endif
81#endif
82#endif
83
1de7afc9 84#include "qemu/sockets.h"
cbcc6336 85#include "ui/qemu-spice.h"
6f97dba0 86
9bd7854e 87#define READ_BUF_LEN 4096
7b0bfdf5 88#define READ_RETRIES 10
c4095726 89#define TCP_MAX_FDS 16
9bd7854e 90
cfb429cb
CM		 91/***********************************************************/
92/* Socket address helpers */
cfb429cb 93
0ff0fad2
DB		 94static char *SocketAddress_to_str(const char *prefix, SocketAddress *addr,
95 bool is_listen, bool is_telnet)
16cc4ffe 96{
130257dc 97 switch (addr->type) {
16cc4ffe 98 case SOCKET_ADDRESS_KIND_INET:
0ff0fad2 99 return g_strdup_printf("%s%s:%s:%s%s", prefix,
32bafa8f
EB		 100 is_telnet ? "telnet" : "tcp",
101 addr->u.inet.data->host,
102 addr->u.inet.data->port,
103 is_listen ? ",server" : "");
16cc4ffe
CM		 104 break;
105 case SOCKET_ADDRESS_KIND_UNIX:
0ff0fad2 106 return g_strdup_printf("%sunix:%s%s", prefix,
32bafa8f 107 addr->u.q_unix.data->path,
0ff0fad2 108 is_listen ? ",server" : "");
16cc4ffe
CM		 109 break;
110 case SOCKET_ADDRESS_KIND_FD:
32bafa8f 111 return g_strdup_printf("%sfd:%s%s", prefix, addr->u.fd.data->str,
0ff0fad2 112 is_listen ? ",server" : "");
16cc4ffe
CM		 113 break;
114 default:
115 abort();
116 }
117}
118
0ff0fad2
DB		 119static char *sockaddr_to_str(struct sockaddr_storage *ss, socklen_t ss_len,
120 struct sockaddr_storage *ps, socklen_t ps_len,
121 bool is_listen, bool is_telnet)
16cc4ffe 122{
01ca519f
CM		 123 char shost[NI_MAXHOST], sserv[NI_MAXSERV];
124 char phost[NI_MAXHOST], pserv[NI_MAXSERV];
16cc4ffe
CM		 125 const char *left = "", *right = "";
126
127 switch (ss->ss_family) {
128#ifndef _WIN32
129 case AF_UNIX:
0ff0fad2
DB		 130 return g_strdup_printf("unix:%s%s",
131 ((struct sockaddr_un *)(ss))->sun_path,
132 is_listen ? ",server" : "");
16cc4ffe
CM		 133#endif
134 case AF_INET6:
135 left = "[";
136 right = "]";
137 /* fall through */
138 case AF_INET:
01ca519f
CM		 139 getnameinfo((struct sockaddr *) ss, ss_len, shost, sizeof(shost),
140 sserv, sizeof(sserv), NI_NUMERICHOST | NI_NUMERICSERV);
141 getnameinfo((struct sockaddr *) ps, ps_len, phost, sizeof(phost),
142 pserv, sizeof(pserv), NI_NUMERICHOST | NI_NUMERICSERV);
0ff0fad2
DB		 143 return g_strdup_printf("%s:%s%s%s:%s%s <-> %s%s%s:%s",
144 is_telnet ? "telnet" : "tcp",
145 left, shost, right, sserv,
146 is_listen ? ",server" : "",
147 left, phost, right, pserv);
16cc4ffe
CM		 148
149 default:
0ff0fad2 150 return g_strdup_printf("unknown");
16cc4ffe
CM		 151 }
152}
153
6f97dba0
AL		 154/***********************************************************/
155/* character device */
156
72cf2d4f
BS		 157static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
158 QTAILQ_HEAD_INITIALIZER(chardevs);
2970a6c9 159
d0d7708b
DB		 160static void qemu_chr_free_common(CharDriverState *chr);
161
162CharDriverState *qemu_chr_alloc(ChardevCommon *backend, Error **errp)
db39fcf1
PB		 163{
164 CharDriverState *chr = g_malloc0(sizeof(CharDriverState));
f3db17b9 165 qemu_mutex_init(&chr->chr_write_lock);
d0d7708b
DB		 166
167 if (backend->has_logfile) {
168 int flags = O_WRONLY | O_CREAT;
169 if (backend->has_logappend &&
170 backend->logappend) {
171 flags |= O_APPEND;
172 } else {
173 flags |= O_TRUNC;
174 }
175 chr->logfd = qemu_open(backend->logfile, flags, 0666);
176 if (chr->logfd < 0) {
177 error_setg_errno(errp, errno,
178 "Unable to open logfile %s",
179 backend->logfile);
180 g_free(chr);
181 return NULL;
182 }
183 } else {
184 chr->logfd = -1;
185 }
186
db39fcf1
PB		 187 return chr;
188}
189
a425d23f 190void qemu_chr_be_event(CharDriverState *s, int event)
6f97dba0 191{
73cdf3f2
AG		 192 /* Keep track if the char device is open */
193 switch (event) {
194 case CHR_EVENT_OPENED:
16665b94 195 s->be_open = 1;
73cdf3f2
AG		 196 break;
197 case CHR_EVENT_CLOSED:
16665b94 198 s->be_open = 0;
73cdf3f2
AG		 199 break;
200 }
201
6f97dba0
AL		 202 if (!s->chr_event)
203 return;
204 s->chr_event(s->handler_opaque, event);
205}
206
fee204fd 207void qemu_chr_be_generic_open(CharDriverState *s)
6f97dba0 208{
bd5c51ee 209 qemu_chr_be_event(s, CHR_EVENT_OPENED);
6f97dba0
AL		 210}
211
d0d7708b
DB		 212
213/* Not reporting errors from writing to logfile, as logs are
214 * defined to be "best effort" only */
215static void qemu_chr_fe_write_log(CharDriverState *s,
216 const uint8_t *buf, size_t len)
217{
218 size_t done = 0;
219 ssize_t ret;
220
221 if (s->logfd < 0) {
222 return;
223 }
224
225 while (done < len) {
53628efb
DB		 226 retry:
227 ret = write(s->logfd, buf + done, len - done);
228 if (ret == -1 && errno == EAGAIN) {
229 g_usleep(100);
230 goto retry;
231 }
d0d7708b
DB		 232
233 if (ret <= 0) {
234 return;
235 }
236 done += ret;
237 }
238}
239
33577b47
PD		 240static int qemu_chr_fe_write_buffer(CharDriverState *s, const uint8_t *buf, int len, int *offset)
241{
242 int res = 0;
243 *offset = 0;
244
245 qemu_mutex_lock(&s->chr_write_lock);
246 while (*offset < len) {
53628efb
DB		 247 retry:
248 res = s->chr_write(s, buf + *offset, len - *offset);
249 if (res < 0 && errno == EAGAIN) {
250 g_usleep(100);
251 goto retry;
252 }
33577b47
PD		 253
254 if (res <= 0) {
255 break;
256 }
257
258 *offset += res;
259 }
260 if (*offset > 0) {
261 qemu_chr_fe_write_log(s, buf, *offset);
262 }
263 qemu_mutex_unlock(&s->chr_write_lock);
264
265 return res;
266}
267
2cc6e0a1 268int qemu_chr_fe_write(CharDriverState *s, const uint8_t *buf, int len)
6f97dba0 269{
9005b2a7
PB		 270 int ret;
271
33577b47
PD		 272 if (s->replay && replay_mode == REPLAY_MODE_PLAY) {
273 int offset;
274 replay_char_write_event_load(&ret, &offset);
275 assert(offset <= len);
276 qemu_chr_fe_write_buffer(s, buf, offset, &offset);
277 return ret;
278 }
279
9005b2a7
PB		 280 qemu_mutex_lock(&s->chr_write_lock);
281 ret = s->chr_write(s, buf, len);
d0d7708b
DB		 282
283 if (ret > 0) {
284 qemu_chr_fe_write_log(s, buf, ret);
285 }
286
9005b2a7 287 qemu_mutex_unlock(&s->chr_write_lock);
33577b47
PD		 288
289 if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
290 replay_char_write_event_save(ret, ret < 0 ? 0 : ret);
291 }
292
9005b2a7 293 return ret;
6f97dba0
AL		 294}
295
cd18720a
AL		 296int qemu_chr_fe_write_all(CharDriverState *s, const uint8_t *buf, int len)
297{
33577b47
PD		 298 int offset;
299 int res;
cd18720a 300
33577b47
PD		 301 if (s->replay && replay_mode == REPLAY_MODE_PLAY) {
302 replay_char_write_event_load(&res, &offset);
303 assert(offset <= len);
304 qemu_chr_fe_write_buffer(s, buf, offset, &offset);
305 return res;
306 }
cd18720a 307
33577b47 308 res = qemu_chr_fe_write_buffer(s, buf, len, &offset);
cd18720a 309
33577b47
PD		 310 if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
311 replay_char_write_event_save(res, offset);
cd18720a
AL		 312 }
313
9005b2a7
PB		 314 if (res < 0) {
315 return res;
316 }
cd18720a
AL		 317 return offset;
318}
319
7b0bfdf5
NN		 320int qemu_chr_fe_read_all(CharDriverState *s, uint8_t *buf, int len)
321{
322 int offset = 0, counter = 10;
323 int res;
324
325 if (!s->chr_sync_read) {
326 return 0;
327 }
33577b47
PD		 328
329 if (s->replay && replay_mode == REPLAY_MODE_PLAY) {
330 return replay_char_read_all_load(buf);
331 }
7b0bfdf5
NN		 332
333 while (offset < len) {
53628efb
DB		 334 retry:
335 res = s->chr_sync_read(s, buf + offset, len - offset);
336 if (res == -1 && errno == EAGAIN) {
337 g_usleep(100);
338 goto retry;
339 }
7b0bfdf5
NN		 340
341 if (res == 0) {
342 break;
343 }
344
345 if (res < 0) {
33577b47
PD		 346 if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
347 replay_char_read_all_save_error(res);
348 }
7b0bfdf5
NN		 349 return res;
350 }
351
352 offset += res;
353
354 if (!counter--) {
355 break;
356 }
357 }
358
33577b47
PD		 359 if (s->replay && replay_mode == REPLAY_MODE_RECORD) {
360 replay_char_read_all_save_buf(buf, offset);
361 }
7b0bfdf5
NN		 362 return offset;
363}
364
41084f1b 365int qemu_chr_fe_ioctl(CharDriverState *s, int cmd, void *arg)
6f97dba0 366{
33577b47
PD		 367 int res;
368 if (!s->chr_ioctl || s->replay) {
369 res = -ENOTSUP;
370 } else {
371 res = s->chr_ioctl(s, cmd, arg);
372 }
373
374 return res;
6f97dba0
AL		 375}
376
909cda12 377int qemu_chr_be_can_write(CharDriverState *s)
6f97dba0
AL		 378{
379 if (!s->chr_can_read)
380 return 0;
381 return s->chr_can_read(s->handler_opaque);
382}
383
33577b47 384void qemu_chr_be_write_impl(CharDriverState *s, uint8_t *buf, int len)
6f97dba0 385{
ac310734
SW		 386 if (s->chr_read) {
387 s->chr_read(s->handler_opaque, buf, len);
388 }
6f97dba0
AL		 389}
390
33577b47
PD		 391void qemu_chr_be_write(CharDriverState *s, uint8_t *buf, int len)
392{
393 if (s->replay) {
394 if (replay_mode == REPLAY_MODE_PLAY) {
395 return;
396 }
397 replay_chr_be_write(s, buf, len);
398 } else {
399 qemu_chr_be_write_impl(s, buf, len);
400 }
401}
402
74c0d6f0 403int qemu_chr_fe_get_msgfd(CharDriverState *s)
7d174059 404{
c76bf6bb 405 int fd;
33577b47
PD		 406 int res = (qemu_chr_fe_get_msgfds(s, &fd, 1) == 1) ? fd : -1;
407 if (s->replay) {
408 fprintf(stderr,
409 "Replay: get msgfd is not supported for serial devices yet\n");
410 exit(1);
411 }
412 return res;
c76bf6bb
NN		 413}
414
415int qemu_chr_fe_get_msgfds(CharDriverState *s, int *fds, int len)
416{
417 return s->get_msgfds ? s->get_msgfds(s, fds, len) : -1;
7d174059
MM		 418}
419
d39aac7a
NN		 420int qemu_chr_fe_set_msgfds(CharDriverState *s, int *fds, int num)
421{
422 return s->set_msgfds ? s->set_msgfds(s, fds, num) : -1;
423}
424
13661089
DB		 425int qemu_chr_add_client(CharDriverState *s, int fd)
426{
427 return s->chr_add_client ? s->chr_add_client(s, fd) : -1;
428}
429
6f97dba0
AL		 430void qemu_chr_accept_input(CharDriverState *s)
431{
432 if (s->chr_accept_input)
433 s->chr_accept_input(s);
98c8ee1d 434 qemu_notify_event();
6f97dba0
AL		 435}
436
e7e71b0e 437void qemu_chr_fe_printf(CharDriverState *s, const char *fmt, ...)
6f97dba0 438{
9bd7854e 439 char buf[READ_BUF_LEN];
6f97dba0
AL		 440 va_list ap;
441 va_start(ap, fmt);
442 vsnprintf(buf, sizeof(buf), fmt, ap);
2cc6e0a1 443 qemu_chr_fe_write(s, (uint8_t *)buf, strlen(buf));
6f97dba0
AL		 444 va_end(ap);
445}
446
386a5a1e
AS		 447static void remove_fd_in_watch(CharDriverState *chr);
448
6f97dba0 449void qemu_chr_add_handlers(CharDriverState *s,
7b27a769 450 IOCanReadHandler *fd_can_read,
6f97dba0
AL		 451 IOReadHandler *fd_read,
452 IOEventHandler *fd_event,
453 void *opaque)
454{
19083228
HG		 455 int fe_open;
456
da7d998b 457 if (!opaque && !fd_can_read && !fd_read && !fd_event) {
19083228 458 fe_open = 0;
386a5a1e 459 remove_fd_in_watch(s);
19083228
HG		 460 } else {
461 fe_open = 1;
2d6c1ef4 462 }
6f97dba0
AL		 463 s->chr_can_read = fd_can_read;
464 s->chr_read = fd_read;
465 s->chr_event = fd_event;
466 s->handler_opaque = opaque;
ac1b84dd 467 if (fe_open && s->chr_update_read_handler)
6f97dba0 468 s->chr_update_read_handler(s);
73cdf3f2 469
19083228 470 if (!s->explicit_fe_open) {
8e25daa8 471 qemu_chr_fe_set_open(s, fe_open);
19083228
HG		 472 }
473
73cdf3f2
AG		 474 /* We're connecting to an already opened device, so let's make sure we
475 also get the open event */
a59bcd31 476 if (fe_open && s->be_open) {
fee204fd 477 qemu_chr_be_generic_open(s);
73cdf3f2 478 }
6f97dba0
AL		 479}
480
481static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
482{
483 return len;
484}
485
0d64992b
PB		 486static CharDriverState *qemu_chr_open_null(const char *id,
487 ChardevBackend *backend,
488 ChardevReturn *ret,
489 Error **errp)
6f97dba0
AL		 490{
491 CharDriverState *chr;
32bafa8f 492 ChardevCommon *common = backend->u.null.data;
6f97dba0 493
d0d7708b
DB		 494 chr = qemu_chr_alloc(common, errp);
495 if (!chr) {
496 return NULL;
497 }
6f97dba0 498 chr->chr_write = null_chr_write;
bd5c51ee 499 chr->explicit_be_open = true;
1f51470d 500 return chr;
6f97dba0
AL		 501}
502
503/* MUX driver for serial I/O splitting */
6f97dba0
AL		 504#define MAX_MUX 4
505#define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
506#define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
507typedef struct {
7b27a769 508 IOCanReadHandler *chr_can_read[MAX_MUX];
6f97dba0
AL		 509 IOReadHandler *chr_read[MAX_MUX];
510 IOEventHandler *chr_event[MAX_MUX];
511 void *ext_opaque[MAX_MUX];
512 CharDriverState *drv;
799f1f23 513 int focus;
6f97dba0
AL		 514 int mux_cnt;
515 int term_got_escape;
516 int max_size;
a80bf99f
AL		 517 /* Intermediate input buffer allows to catch escape sequences even if the
518 currently active device is not accepting any input - but only until it
519 is full as well. */
520 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
521 int prod[MAX_MUX];
522 int cons[MAX_MUX];
2d22959d 523 int timestamps;
9005b2a7
PB		 524
525 /* Protected by the CharDriverState chr_write_lock. */
4ab312f7 526 int linestart;
2d22959d 527 int64_t timestamps_start;
6f97dba0
AL		 528} MuxDriver;
529
530
9005b2a7 531/* Called with chr_write_lock held. */
6f97dba0
AL		 532static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
533{
534 MuxDriver *d = chr->opaque;
535 int ret;
2d22959d 536 if (!d->timestamps) {
6975b713 537 ret = qemu_chr_fe_write(d->drv, buf, len);
6f97dba0
AL		 538 } else {
539 int i;
540
541 ret = 0;
4ab312f7
JK		 542 for (i = 0; i < len; i++) {
543 if (d->linestart) {
6f97dba0
AL		 544 char buf1[64];
545 int64_t ti;
546 int secs;
547
bc72ad67 548 ti = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
2d22959d
JK		 549 if (d->timestamps_start == -1)
550 d->timestamps_start = ti;
551 ti -= d->timestamps_start;
a4bb1db8 552 secs = ti / 1000;
6f97dba0
AL		 553 snprintf(buf1, sizeof(buf1),
554 "[%02d:%02d:%02d.%03d] ",
555 secs / 3600,
556 (secs / 60) % 60,
557 secs % 60,
a4bb1db8 558 (int)(ti % 1000));
6975b713 559 qemu_chr_fe_write(d->drv, (uint8_t *)buf1, strlen(buf1));
4ab312f7
JK		 560 d->linestart = 0;
561 }
6975b713 562 ret += qemu_chr_fe_write(d->drv, buf+i, 1);
4ab312f7
JK		 563 if (buf[i] == '\n') {
564 d->linestart = 1;
6f97dba0
AL		 565 }
566 }
567 }
568 return ret;
569}
570
571static const char * const mux_help[] = {
572 "% h print this help\n\r",
573 "% x exit emulator\n\r",
574 "% s save disk data back to file (if -snapshot)\n\r",
86d10328 575 "% t toggle console timestamps\n\r",
6f97dba0
AL		 576 "% b send break (magic sysrq)\n\r",
577 "% c switch between console and monitor\n\r",
578 "% % sends %\n\r",
579 NULL
580};
581
582int term_escape_char = 0x01; /* ctrl-a is used for escape */
583static void mux_print_help(CharDriverState *chr)
584{
585 int i, j;
586 char ebuf[15] = "Escape-Char";
587 char cbuf[50] = "\n\r";
588
589 if (term_escape_char > 0 && term_escape_char < 26) {
590 snprintf(cbuf, sizeof(cbuf), "\n\r");
591 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
592 } else {
593 snprintf(cbuf, sizeof(cbuf),
594 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
595 term_escape_char);
596 }
6975b713 597 qemu_chr_fe_write(chr, (uint8_t *)cbuf, strlen(cbuf));
6f97dba0
AL		 598 for (i = 0; mux_help[i] != NULL; i++) {
599 for (j=0; mux_help[i][j] != '\0'; j++) {
600 if (mux_help[i][j] == '%')
6975b713 601 qemu_chr_fe_write(chr, (uint8_t *)ebuf, strlen(ebuf));
6f97dba0 602 else
6975b713 603 qemu_chr_fe_write(chr, (uint8_t *)&mux_help[i][j], 1);
6f97dba0
AL		 604 }
605 }
606}
607
2724b180
AL		 608static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
609{
610 if (d->chr_event[mux_nr])
611 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
612}
613
6f97dba0
AL		 614static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
615{
616 if (d->term_got_escape) {
617 d->term_got_escape = 0;
618 if (ch == term_escape_char)
619 goto send_char;
620 switch(ch) {
621 case '?':
622 case 'h':
623 mux_print_help(chr);
624 break;
625 case 'x':
626 {
627 const char *term = "QEMU: Terminated\n\r";
6975b713 628 qemu_chr_fe_write(chr, (uint8_t *)term, strlen(term));
6f97dba0
AL		 629 exit(0);
630 break;
631 }
632 case 's':
da31d594 633 blk_commit_all();
6f97dba0
AL		 634 break;
635 case 'b':
a425d23f 636 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
6f97dba0
AL		 637 break;
638 case 'c':
639 /* Switch to the next registered device */
799f1f23
GH		 640 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
641 d->focus++;
642 if (d->focus >= d->mux_cnt)
643 d->focus = 0;
644 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
6f97dba0 645 break;
2d22959d
JK		 646 case 't':
647 d->timestamps = !d->timestamps;
648 d->timestamps_start = -1;
4ab312f7 649 d->linestart = 0;
2d22959d 650 break;
6f97dba0
AL		 651 }
652 } else if (ch == term_escape_char) {
653 d->term_got_escape = 1;
654 } else {
655 send_char:
656 return 1;
657 }
658 return 0;
659}
660
661static void mux_chr_accept_input(CharDriverState *chr)
662{
6f97dba0 663 MuxDriver *d = chr->opaque;
799f1f23 664 int m = d->focus;
6f97dba0 665
a80bf99f 666 while (d->prod[m] != d->cons[m] &&
6f97dba0
AL		 667 d->chr_can_read[m] &&
668 d->chr_can_read[m](d->ext_opaque[m])) {
669 d->chr_read[m](d->ext_opaque[m],
a80bf99f 670 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
6f97dba0
AL		 671 }
672}
673
674static int mux_chr_can_read(void *opaque)
675{
676 CharDriverState *chr = opaque;
677 MuxDriver *d = chr->opaque;
799f1f23 678 int m = d->focus;
6f97dba0 679
a80bf99f 680 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
6f97dba0 681 return 1;
a80bf99f
AL		 682 if (d->chr_can_read[m])
683 return d->chr_can_read[m](d->ext_opaque[m]);
6f97dba0
AL		 684 return 0;
685}
686
687static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
688{
689 CharDriverState *chr = opaque;
690 MuxDriver *d = chr->opaque;
799f1f23 691 int m = d->focus;
6f97dba0
AL		 692 int i;
693
694 mux_chr_accept_input (opaque);
695
696 for(i = 0; i < size; i++)
697 if (mux_proc_byte(chr, d, buf[i])) {
a80bf99f 698 if (d->prod[m] == d->cons[m] &&
6f97dba0
AL		 699 d->chr_can_read[m] &&
700 d->chr_can_read[m](d->ext_opaque[m]))
701 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
702 else
a80bf99f 703 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
6f97dba0
AL		 704 }
705}
706
707static void mux_chr_event(void *opaque, int event)
708{
709 CharDriverState *chr = opaque;
710 MuxDriver *d = chr->opaque;
711 int i;
712
713 /* Send the event to all registered listeners */
714 for (i = 0; i < d->mux_cnt; i++)
2724b180 715 mux_chr_send_event(d, i, event);
6f97dba0
AL		 716}
717
718static void mux_chr_update_read_handler(CharDriverState *chr)
719{
720 MuxDriver *d = chr->opaque;
721
722 if (d->mux_cnt >= MAX_MUX) {
723 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
724 return;
725 }
726 d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
727 d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
728 d->chr_read[d->mux_cnt] = chr->chr_read;
729 d->chr_event[d->mux_cnt] = chr->chr_event;
730 /* Fix up the real driver with mux routines */
731 if (d->mux_cnt == 0) {
732 qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
733 mux_chr_event, chr);
734 }
799f1f23
GH		 735 if (d->focus != -1) {
736 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
a7aec5da 737 }
799f1f23 738 d->focus = d->mux_cnt;
6f97dba0 739 d->mux_cnt++;
799f1f23 740 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
6f97dba0
AL		 741}
742
7b7ab18d
MR		 743static bool muxes_realized;
744
745/**
746 * Called after processing of default and command-line-specified
747 * chardevs to deliver CHR_EVENT_OPENED events to any FEs attached
748 * to a mux chardev. This is done here to ensure that
749 * output/prompts/banners are only displayed for the FE that has
750 * focus when initial command-line processing/machine init is
751 * completed.
752 *
753 * After this point, any new FE attached to any new or existing
754 * mux will receive CHR_EVENT_OPENED notifications for the BE
755 * immediately.
756 */
757static void muxes_realize_done(Notifier *notifier, void *unused)
758{
759 CharDriverState *chr;
760
761 QTAILQ_FOREACH(chr, &chardevs, next) {
762 if (chr->is_mux) {
763 MuxDriver *d = chr->opaque;
764 int i;
765
766 /* send OPENED to all already-attached FEs */
767 for (i = 0; i < d->mux_cnt; i++) {
768 mux_chr_send_event(d, i, CHR_EVENT_OPENED);
769 }
770 /* mark mux as OPENED so any new FEs will immediately receive
771 * OPENED event
772 */
773 qemu_chr_be_generic_open(chr);
774 }
775 }
776 muxes_realized = true;
777}
778
779static Notifier muxes_realize_notify = {
780 .notify = muxes_realize_done,
781};
782
3f0838ab
KB		 783static GSource *mux_chr_add_watch(CharDriverState *s, GIOCondition cond)
784{
785 MuxDriver *d = s->opaque;
786 return d->drv->chr_add_watch(d->drv, cond);
787}
788
3c0e5a4a
PB		 789static CharDriverState *qemu_chr_open_mux(const char *id,
790 ChardevBackend *backend,
791 ChardevReturn *ret, Error **errp)
6f97dba0 792{
32bafa8f 793 ChardevMux *mux = backend->u.mux.data;
3c0e5a4a 794 CharDriverState *chr, *drv;
6f97dba0 795 MuxDriver *d;
f194a1ae 796 ChardevCommon *common = qapi_ChardevMux_base(mux);
6f97dba0 797
3c0e5a4a
PB		 798 drv = qemu_chr_find(mux->chardev);
799 if (drv == NULL) {
800 error_setg(errp, "mux: base chardev %s not found", mux->chardev);
801 return NULL;
802 }
803
d0d7708b
DB		 804 chr = qemu_chr_alloc(common, errp);
805 if (!chr) {
806 return NULL;
807 }
2d528d45 808 d = g_new0(MuxDriver, 1);
6f97dba0
AL		 809
810 chr->opaque = d;
811 d->drv = drv;
799f1f23 812 d->focus = -1;
6f97dba0
AL		 813 chr->chr_write = mux_chr_write;
814 chr->chr_update_read_handler = mux_chr_update_read_handler;
815 chr->chr_accept_input = mux_chr_accept_input;
7c32c4fe 816 /* Frontend guest-open / -close notification is not support with muxes */
574b711a 817 chr->chr_set_fe_open = NULL;
3f0838ab
KB		 818 if (drv->chr_add_watch) {
819 chr->chr_add_watch = mux_chr_add_watch;
820 }
7b7ab18d
MR		 821 /* only default to opened state if we've realized the initial
822 * set of muxes
823 */
824 chr->explicit_be_open = muxes_realized ? 0 : 1;
825 chr->is_mux = 1;
73cdf3f2 826
6f97dba0
AL		 827 return chr;
828}
829
830
96c63847
AL		 831typedef struct IOWatchPoll
832{
d185c094
PB		 833 GSource parent;
834
9894dc0c 835 QIOChannel *ioc;
96c63847 836 GSource *src;
96c63847
AL		 837
838 IOCanReadHandler *fd_can_read;
1e885b25 839 GSourceFunc fd_read;
96c63847 840 void *opaque;
96c63847
AL		 841} IOWatchPoll;
842
96c63847
AL		 843static IOWatchPoll *io_watch_poll_from_source(GSource *source)
844{
d185c094 845 return container_of(source, IOWatchPoll, parent);
96c63847
AL		 846}
847
848static gboolean io_watch_poll_prepare(GSource *source, gint *timeout_)
849{
850 IOWatchPoll *iwp = io_watch_poll_from_source(source);
d185c094 851 bool now_active = iwp->fd_can_read(iwp->opaque) > 0;
1e885b25 852 bool was_active = iwp->src != NULL;
d185c094 853 if (was_active == now_active) {
96c63847
AL		 854 return FALSE;
855 }
856
d185c094 857 if (now_active) {
9894dc0c
DB		 858 iwp->src = qio_channel_create_watch(
859 iwp->ioc, G_IO_IN | G_IO_ERR | G_IO_HUP | G_IO_NVAL);
1e885b25 860 g_source_set_callback(iwp->src, iwp->fd_read, iwp->opaque, NULL);
d185c094
PB		 861 g_source_attach(iwp->src, NULL);
862 } else {
1e885b25
PB		 863 g_source_destroy(iwp->src);
864 g_source_unref(iwp->src);
865 iwp->src = NULL;
d185c094
PB		 866 }
867 return FALSE;
96c63847
AL		 868}
869
870static gboolean io_watch_poll_check(GSource *source)
871{
d185c094 872 return FALSE;
96c63847
AL		 873}
874
875static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
876 gpointer user_data)
877{
d185c094 878 abort();
96c63847
AL		 879}
880
881static void io_watch_poll_finalize(GSource *source)
882{
2b316774
PB		 883 /* Due to a glib bug, removing the last reference to a source
884 * inside a finalize callback causes recursive locking (and a
885 * deadlock). This is not a problem inside other callbacks,
886 * including dispatch callbacks, so we call io_remove_watch_poll
887 * to remove this source. At this point, iwp->src must
888 * be NULL, or we would leak it.
889 *
890 * This would be solved much more elegantly by child sources,
891 * but we support older glib versions that do not have them.
892 */
96c63847 893 IOWatchPoll *iwp = io_watch_poll_from_source(source);
2b316774 894 assert(iwp->src == NULL);
96c63847
AL		 895}
896
897static GSourceFuncs io_watch_poll_funcs = {
898 .prepare = io_watch_poll_prepare,
899 .check = io_watch_poll_check,
900 .dispatch = io_watch_poll_dispatch,
901 .finalize = io_watch_poll_finalize,
902};
903
904/* Can only be used for read */
9894dc0c 905static guint io_add_watch_poll(QIOChannel *ioc,
96c63847 906 IOCanReadHandler *fd_can_read,
9894dc0c 907 QIOChannelFunc fd_read,
96c63847
AL		 908 gpointer user_data)
909{
910 IOWatchPoll *iwp;
0ca5aa4f 911 int tag;
96c63847 912
d185c094 913 iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs, sizeof(IOWatchPoll));
96c63847
AL		 914 iwp->fd_can_read = fd_can_read;
915 iwp->opaque = user_data;
9894dc0c 916 iwp->ioc = ioc;
1e885b25
PB		 917 iwp->fd_read = (GSourceFunc) fd_read;
918 iwp->src = NULL;
96c63847 919
0ca5aa4f
PB		 920 tag = g_source_attach(&iwp->parent, NULL);
921 g_source_unref(&iwp->parent);
922 return tag;
96c63847
AL		 923}
924
2b316774
PB		 925static void io_remove_watch_poll(guint tag)
926{
927 GSource *source;
928 IOWatchPoll *iwp;
929
930 g_return_if_fail (tag > 0);
931
932 source = g_main_context_find_source_by_id(NULL, tag);
933 g_return_if_fail (source != NULL);
934
935 iwp = io_watch_poll_from_source(source);
936 if (iwp->src) {
937 g_source_destroy(iwp->src);
938 g_source_unref(iwp->src);
939 iwp->src = NULL;
940 }
941 g_source_destroy(&iwp->parent);
942}
943
26da70c7
AS		 944static void remove_fd_in_watch(CharDriverState *chr)
945{
946 if (chr->fd_in_tag) {
947 io_remove_watch_poll(chr->fd_in_tag);
948 chr->fd_in_tag = 0;
949 }
950}
951
96c63847 952
9894dc0c
DB		 953static int io_channel_send_full(QIOChannel *ioc,
954 const void *buf, size_t len,
955 int *fds, size_t nfds)
76a9644b 956{
9894dc0c 957 size_t offset = 0;
76a9644b 958
9894dc0c
DB		 959 while (offset < len) {
960 ssize_t ret = 0;
961 struct iovec iov = { .iov_base = (char *)buf + offset,
962 .iov_len = len - offset };
963
964 ret = qio_channel_writev_full(
965 ioc, &iov, 1,
966 fds, nfds, NULL);
967 if (ret == QIO_CHANNEL_ERR_BLOCK) {
9894dc0c
DB		 968 if (offset) {
969 return offset;
970 }
76a9644b 971
e046fb44
DB		 972 errno = EAGAIN;
973 return -1;
974 } else if (ret < 0) {
9894dc0c
DB		 975 errno = EINVAL;
976 return -1;
977 }
76a9644b 978
9894dc0c
DB		 979 offset += ret;
980 }
76a9644b 981
9894dc0c 982 return offset;
76a9644b
AL		 983}
984
9894dc0c 985
0ff0fad2 986#ifndef _WIN32
9894dc0c 987static int io_channel_send(QIOChannel *ioc, const void *buf, size_t len)
96c63847 988{
9894dc0c 989 return io_channel_send_full(ioc, buf, len, NULL, 0);
96c63847 990}
96c63847 991
44ab9ed4 992
a29753f8
AL		 993typedef struct FDCharDriver {
994 CharDriverState *chr;
9894dc0c 995 QIOChannel *ioc_in, *ioc_out;
6f97dba0
AL		 996 int max_size;
997} FDCharDriver;
998
9005b2a7 999/* Called with chr_write_lock held. */
6f97dba0
AL		 1000static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1001{
1002 FDCharDriver *s = chr->opaque;
a29753f8 1003
9894dc0c 1004 return io_channel_send(s->ioc_out, buf, len);
6f97dba0
AL		 1005}
1006
9894dc0c 1007static gboolean fd_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 1008{
1009 CharDriverState *chr = opaque;
1010 FDCharDriver *s = chr->opaque;
a29753f8 1011 int len;
9bd7854e 1012 uint8_t buf[READ_BUF_LEN];
9894dc0c 1013 ssize_t ret;
6f97dba0
AL		 1014
1015 len = sizeof(buf);
a29753f8 1016 if (len > s->max_size) {
6f97dba0 1017 len = s->max_size;
a29753f8
AL		 1018 }
1019 if (len == 0) {
cdbf6e16 1020 return TRUE;
a29753f8
AL		 1021 }
1022
9894dc0c
DB		 1023 ret = qio_channel_read(
1024 chan, (gchar *)buf, len, NULL);
1025 if (ret == 0) {
26da70c7 1026 remove_fd_in_watch(chr);
a425d23f 1027 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
a29753f8 1028 return FALSE;
6f97dba0 1029 }
9894dc0c
DB		 1030 if (ret > 0) {
1031 qemu_chr_be_write(chr, buf, ret);
6f97dba0 1032 }
a29753f8
AL		 1033
1034 return TRUE;
1035}
1036
1037static int fd_chr_read_poll(void *opaque)
1038{
1039 CharDriverState *chr = opaque;
1040 FDCharDriver *s = chr->opaque;
1041
1042 s->max_size = qemu_chr_be_can_write(chr);
1043 return s->max_size;
6f97dba0
AL		 1044}
1045
23673ca7
AL		 1046static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1047{
1048 FDCharDriver *s = chr->opaque;
9894dc0c 1049 return qio_channel_create_watch(s->ioc_out, cond);
23673ca7
AL		 1050}
1051
6f97dba0
AL		 1052static void fd_chr_update_read_handler(CharDriverState *chr)
1053{
1054 FDCharDriver *s = chr->opaque;
1055
26da70c7 1056 remove_fd_in_watch(chr);
9894dc0c
DB		 1057 if (s->ioc_in) {
1058 chr->fd_in_tag = io_add_watch_poll(s->ioc_in,
1059 fd_chr_read_poll,
7ba9addc 1060 fd_chr_read, chr);
6f97dba0
AL		 1061 }
1062}
1063
1064static void fd_chr_close(struct CharDriverState *chr)
1065{
1066 FDCharDriver *s = chr->opaque;
1067
26da70c7 1068 remove_fd_in_watch(chr);
9894dc0c
DB		 1069 if (s->ioc_in) {
1070 object_unref(OBJECT(s->ioc_in));
a29753f8 1071 }
9894dc0c
DB		 1072 if (s->ioc_out) {
1073 object_unref(OBJECT(s->ioc_out));
6f97dba0
AL		 1074 }
1075
7267c094 1076 g_free(s);
a425d23f 1077 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1078}
1079
1080/* open a character device to a unix fd */
d0d7708b
DB		 1081static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out,
1082 ChardevCommon *backend, Error **errp)
6f97dba0
AL		 1083{
1084 CharDriverState *chr;
1085 FDCharDriver *s;
1086
d0d7708b
DB		 1087 chr = qemu_chr_alloc(backend, errp);
1088 if (!chr) {
1089 return NULL;
1090 }
2d528d45 1091 s = g_new0(FDCharDriver, 1);
9894dc0c
DB		 1092 s->ioc_in = QIO_CHANNEL(qio_channel_file_new_fd(fd_in));
1093 s->ioc_out = QIO_CHANNEL(qio_channel_file_new_fd(fd_out));
4ff12bdb 1094 qemu_set_nonblock(fd_out);
a29753f8 1095 s->chr = chr;
6f97dba0 1096 chr->opaque = s;
23673ca7 1097 chr->chr_add_watch = fd_chr_add_watch;
6f97dba0
AL		 1098 chr->chr_write = fd_chr_write;
1099 chr->chr_update_read_handler = fd_chr_update_read_handler;
1100 chr->chr_close = fd_chr_close;
1101
6f97dba0
AL		 1102 return chr;
1103}
1104
20cbe7a2
PB		 1105static CharDriverState *qemu_chr_open_pipe(const char *id,
1106 ChardevBackend *backend,
1107 ChardevReturn *ret,
1108 Error **errp)
6f97dba0 1109{
32bafa8f 1110 ChardevHostdev *opts = backend->u.pipe.data;
6f97dba0 1111 int fd_in, fd_out;
0ff0fad2
DB		 1112 char *filename_in;
1113 char *filename_out;
548cbb36 1114 const char *filename = opts->device;
f194a1ae 1115 ChardevCommon *common = qapi_ChardevHostdev_base(opts);
7d31544f 1116
0ff0fad2
DB		 1117
1118 filename_in = g_strdup_printf("%s.in", filename);
1119 filename_out = g_strdup_printf("%s.out", filename);
40ff6d7e
KW		 1120 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
1121 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
0ff0fad2
DB		 1122 g_free(filename_in);
1123 g_free(filename_out);
6f97dba0
AL		 1124 if (fd_in < 0 || fd_out < 0) {
1125 if (fd_in >= 0)
1126 close(fd_in);
1127 if (fd_out >= 0)
1128 close(fd_out);
b181e047 1129 TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
a89dd6c3 1130 if (fd_in < 0) {
20cbe7a2 1131 error_setg_file_open(errp, errno, filename);
1f51470d 1132 return NULL;
a89dd6c3 1133 }
6f97dba0 1134 }
d0d7708b 1135 return qemu_chr_open_fd(fd_in, fd_out, common, errp);
6f97dba0
AL		 1136}
1137
6f97dba0
AL		 1138/* init terminal so that we can grab keys */
1139static struct termios oldtty;
1140static int old_fd0_flags;
c88930a6 1141static bool stdio_in_use;
bb002513 1142static bool stdio_allow_signal;
e76d4420
GH		 1143static bool stdio_echo_state;
1144
1145static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo);
6f97dba0
AL		 1146
1147static void term_exit(void)
1148{
1149 tcsetattr (0, TCSANOW, &oldtty);
1150 fcntl(0, F_SETFL, old_fd0_flags);
1151}
1152
e76d4420
GH		 1153static void term_stdio_handler(int sig)
1154{
1155 /* restore echo after resume from suspend. */
1156 qemu_chr_set_echo_stdio(NULL, stdio_echo_state);
1157}
1158
bb002513 1159static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
6f97dba0
AL		 1160{
1161 struct termios tty;
1162
e76d4420 1163 stdio_echo_state = echo;
0369364b 1164 tty = oldtty;
bb002513
PB		 1165 if (!echo) {
1166 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
6f97dba0 1167 |INLCR|IGNCR|ICRNL|IXON);
bb002513
PB		 1168 tty.c_oflag |= OPOST;
1169 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
1170 tty.c_cflag &= ~(CSIZE|PARENB);
1171 tty.c_cflag |= CS8;
1172 tty.c_cc[VMIN] = 1;
1173 tty.c_cc[VTIME] = 0;
1174 }
bb002513 1175 if (!stdio_allow_signal)
6f97dba0 1176 tty.c_lflag &= ~ISIG;
6f97dba0
AL		 1177
1178 tcsetattr (0, TCSANOW, &tty);
6f97dba0
AL		 1179}
1180
1181static void qemu_chr_close_stdio(struct CharDriverState *chr)
1182{
1183 term_exit();
6f97dba0
AL		 1184 fd_chr_close(chr);
1185}
1186
8c84b25d
PB		 1187static CharDriverState *qemu_chr_open_stdio(const char *id,
1188 ChardevBackend *backend,
1189 ChardevReturn *ret,
1190 Error **errp)
6f97dba0 1191{
32bafa8f 1192 ChardevStdio *opts = backend->u.stdio.data;
6f97dba0 1193 CharDriverState *chr;
e76d4420 1194 struct sigaction act;
f194a1ae 1195 ChardevCommon *common = qapi_ChardevStdio_base(opts);
6f97dba0 1196
ab51b1d5 1197 if (is_daemonized()) {
8c84b25d 1198 error_setg(errp, "cannot use stdio with -daemonize");
ab51b1d5
MT		 1199 return NULL;
1200 }
c88930a6
LL		 1201
1202 if (stdio_in_use) {
8c84b25d
PB		 1203 error_setg(errp, "cannot use stdio by multiple character devices");
1204 return NULL;
c88930a6
LL		 1205 }
1206
1207 stdio_in_use = true;
ed7a1540 1208 old_fd0_flags = fcntl(0, F_GETFL);
c88930a6 1209 tcgetattr(0, &oldtty);
4ff12bdb 1210 qemu_set_nonblock(0);
ed7a1540 1211 atexit(term_exit);
0369364b 1212
e76d4420
GH		 1213 memset(&act, 0, sizeof(act));
1214 act.sa_handler = term_stdio_handler;
1215 sigaction(SIGCONT, &act, NULL);
1216
d0d7708b 1217 chr = qemu_chr_open_fd(0, 1, common, errp);
6f97dba0 1218 chr->chr_close = qemu_chr_close_stdio;
bb002513 1219 chr->chr_set_echo = qemu_chr_set_echo_stdio;
7c358031
GH		 1220 if (opts->has_signal) {
1221 stdio_allow_signal = opts->signal;
1222 }
15f31519 1223 qemu_chr_fe_set_echo(chr, false);
6f97dba0 1224
1f51470d 1225 return chr;
6f97dba0
AL		 1226}
1227
6f97dba0 1228#if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
a167ba50
AJ		 1229 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
1230 || defined(__GLIBC__)
6f97dba0 1231
d809ab95
PB		 1232#define HAVE_CHARDEV_SERIAL 1
1233#define HAVE_CHARDEV_PTY 1
e551498e 1234
6f97dba0 1235typedef struct {
9894dc0c 1236 QIOChannel *ioc;
6f97dba0 1237 int read_bytes;
9005b2a7
PB		 1238
1239 /* Protected by the CharDriverState chr_write_lock. */
1240 int connected;
8aa33caf 1241 guint timer_tag;
7b3621f4 1242 guint open_tag;
6f97dba0
AL		 1243} PtyCharDriver;
1244
9005b2a7 1245static void pty_chr_update_read_handler_locked(CharDriverState *chr);
6f97dba0
AL		 1246static void pty_chr_state(CharDriverState *chr, int connected);
1247
8aa33caf
AL		 1248static gboolean pty_chr_timer(gpointer opaque)
1249{
1250 struct CharDriverState *chr = opaque;
1251 PtyCharDriver *s = chr->opaque;
1252
9005b2a7 1253 qemu_mutex_lock(&chr->chr_write_lock);
79f20075 1254 s->timer_tag = 0;
7b3621f4 1255 s->open_tag = 0;
b0d768c3
GH		 1256 if (!s->connected) {
1257 /* Next poll ... */
9005b2a7 1258 pty_chr_update_read_handler_locked(chr);
b0d768c3 1259 }
9005b2a7 1260 qemu_mutex_unlock(&chr->chr_write_lock);
8aa33caf
AL		 1261 return FALSE;
1262}
1263
9005b2a7 1264/* Called with chr_write_lock held. */
8aa33caf
AL		 1265static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
1266{
1267 PtyCharDriver *s = chr->opaque;
1268
1269 if (s->timer_tag) {
1270 g_source_remove(s->timer_tag);
1271 s->timer_tag = 0;
1272 }
1273
1274 if (ms == 1000) {
1275 s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
1276 } else {
1277 s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
1278 }
1279}
1280
9005b2a7
PB		 1281/* Called with chr_write_lock held. */
1282static void pty_chr_update_read_handler_locked(CharDriverState *chr)
1bb7fe72
PB		 1283{
1284 PtyCharDriver *s = chr->opaque;
1285 GPollFD pfd;
c1f24489 1286 int rc;
9894dc0c 1287 QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc);
1bb7fe72 1288
9894dc0c 1289 pfd.fd = fioc->fd;
1bb7fe72
PB		 1290 pfd.events = G_IO_OUT;
1291 pfd.revents = 0;
c1f24489
PB		 1292 do {
1293 rc = g_poll(&pfd, 1, 0);
1294 } while (rc == -1 && errno == EINTR);
1295 assert(rc >= 0);
1296
1bb7fe72
PB		 1297 if (pfd.revents & G_IO_HUP) {
1298 pty_chr_state(chr, 0);
1299 } else {
1300 pty_chr_state(chr, 1);
1301 }
1302}
1303
9005b2a7
PB		 1304static void pty_chr_update_read_handler(CharDriverState *chr)
1305{
1306 qemu_mutex_lock(&chr->chr_write_lock);
1307 pty_chr_update_read_handler_locked(chr);
1308 qemu_mutex_unlock(&chr->chr_write_lock);
1309}
1310
1311/* Called with chr_write_lock held. */
6f97dba0
AL		 1312static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1313{
1314 PtyCharDriver *s = chr->opaque;
1315
1316 if (!s->connected) {
1317 /* guest sends data, check for (re-)connect */
9005b2a7 1318 pty_chr_update_read_handler_locked(chr);
cf7330c7
ST		 1319 if (!s->connected) {
1320 return 0;
1321 }
6f97dba0 1322 }
9894dc0c 1323 return io_channel_send(s->ioc, buf, len);
6f97dba0
AL		 1324}
1325
e6a87ed8
AL		 1326static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1327{
1328 PtyCharDriver *s = chr->opaque;
62c339c5
PB		 1329 if (!s->connected) {
1330 return NULL;
1331 }
9894dc0c 1332 return qio_channel_create_watch(s->ioc, cond);
e6a87ed8
AL		 1333}
1334
6f97dba0
AL		 1335static int pty_chr_read_poll(void *opaque)
1336{
1337 CharDriverState *chr = opaque;
1338 PtyCharDriver *s = chr->opaque;
1339
909cda12 1340 s->read_bytes = qemu_chr_be_can_write(chr);
6f97dba0
AL		 1341 return s->read_bytes;
1342}
1343
9894dc0c 1344static gboolean pty_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 1345{
1346 CharDriverState *chr = opaque;
1347 PtyCharDriver *s = chr->opaque;
9894dc0c 1348 gsize len;
9bd7854e 1349 uint8_t buf[READ_BUF_LEN];
9894dc0c 1350 ssize_t ret;
6f97dba0
AL		 1351
1352 len = sizeof(buf);
1353 if (len > s->read_bytes)
1354 len = s->read_bytes;
cdbf6e16
PB		 1355 if (len == 0) {
1356 return TRUE;
1357 }
9894dc0c
DB		 1358 ret = qio_channel_read(s->ioc, (char *)buf, len, NULL);
1359 if (ret <= 0) {
6f97dba0 1360 pty_chr_state(chr, 0);
093d3a20
AL		 1361 return FALSE;
1362 } else {
6f97dba0 1363 pty_chr_state(chr, 1);
9894dc0c 1364 qemu_chr_be_write(chr, buf, ret);
6f97dba0 1365 }
093d3a20 1366 return TRUE;
6f97dba0
AL		 1367}
1368
7b3621f4
PB		 1369static gboolean qemu_chr_be_generic_open_func(gpointer opaque)
1370{
1371 CharDriverState *chr = opaque;
1372 PtyCharDriver *s = chr->opaque;
1373
1374 s->open_tag = 0;
1375 qemu_chr_be_generic_open(chr);
1376 return FALSE;
1377}
1378
9005b2a7 1379/* Called with chr_write_lock held. */
6f97dba0
AL		 1380static void pty_chr_state(CharDriverState *chr, int connected)
1381{
1382 PtyCharDriver *s = chr->opaque;
1383
1384 if (!connected) {
7b3621f4
PB		 1385 if (s->open_tag) {
1386 g_source_remove(s->open_tag);
1387 s->open_tag = 0;
1388 }
26da70c7 1389 remove_fd_in_watch(chr);
6f97dba0 1390 s->connected = 0;
6f97dba0
AL		 1391 /* (re-)connect poll interval for idle guests: once per second.
1392 * We check more frequently in case the guests sends data to
1393 * the virtual device linked to our pty. */
8aa33caf 1394 pty_chr_rearm_timer(chr, 1000);
6f97dba0 1395 } else {
85a67692
PB		 1396 if (s->timer_tag) {
1397 g_source_remove(s->timer_tag);
1398 s->timer_tag = 0;
1399 }
1400 if (!s->connected) {
7b3621f4 1401 g_assert(s->open_tag == 0);
85a67692 1402 s->connected = 1;
7b3621f4 1403 s->open_tag = g_idle_add(qemu_chr_be_generic_open_func, chr);
ac1b84dd
GH		 1404 }
1405 if (!chr->fd_in_tag) {
9894dc0c
DB		 1406 chr->fd_in_tag = io_add_watch_poll(s->ioc,
1407 pty_chr_read_poll,
7ba9addc 1408 pty_chr_read, chr);
85a67692 1409 }
6f97dba0
AL		 1410 }
1411}
1412
6f97dba0
AL		 1413static void pty_chr_close(struct CharDriverState *chr)
1414{
1415 PtyCharDriver *s = chr->opaque;
1416
7b3621f4
PB		 1417 qemu_mutex_lock(&chr->chr_write_lock);
1418 pty_chr_state(chr, 0);
9894dc0c 1419 object_unref(OBJECT(s->ioc));
8aa33caf
AL		 1420 if (s->timer_tag) {
1421 g_source_remove(s->timer_tag);
910b6368 1422 s->timer_tag = 0;
8aa33caf 1423 }
7b3621f4 1424 qemu_mutex_unlock(&chr->chr_write_lock);
7267c094 1425 g_free(s);
a425d23f 1426 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1427}
1428
e68c5958 1429static CharDriverState *qemu_chr_open_pty(const char *id,
c2e75a43
PB		 1430 ChardevBackend *backend,
1431 ChardevReturn *ret,
1432 Error **errp)
6f97dba0
AL		 1433{
1434 CharDriverState *chr;
1435 PtyCharDriver *s;
e68c5958 1436 int master_fd, slave_fd;
6f97dba0 1437 char pty_name[PATH_MAX];
32bafa8f 1438 ChardevCommon *common = backend->u.pty.data;
6f97dba0 1439
4efeabbb
MT		 1440 master_fd = qemu_openpty_raw(&slave_fd, pty_name);
1441 if (master_fd < 0) {
c2e75a43 1442 error_setg_errno(errp, errno, "Failed to create PTY");
1f51470d 1443 return NULL;
6f97dba0
AL		 1444 }
1445
837a183f 1446 close(slave_fd);
fac6688a 1447 qemu_set_nonblock(master_fd);
6f97dba0 1448
d0d7708b
DB		 1449 chr = qemu_chr_alloc(common, errp);
1450 if (!chr) {
1451 close(master_fd);
1452 return NULL;
1453 }
a4e26048 1454
4efeabbb
MT		 1455 chr->filename = g_strdup_printf("pty:%s", pty_name);
1456 ret->pty = g_strdup(pty_name);
e68c5958 1457 ret->has_pty = true;
58650218 1458
e68c5958 1459 fprintf(stderr, "char device redirected to %s (label %s)\n",
4efeabbb 1460 pty_name, id);
6f97dba0 1461
2d528d45 1462 s = g_new0(PtyCharDriver, 1);
6f97dba0
AL		 1463 chr->opaque = s;
1464 chr->chr_write = pty_chr_write;
1465 chr->chr_update_read_handler = pty_chr_update_read_handler;
1466 chr->chr_close = pty_chr_close;
e6a87ed8 1467 chr->chr_add_watch = pty_chr_add_watch;
bd5c51ee 1468 chr->explicit_be_open = true;
6f97dba0 1469
9894dc0c 1470 s->ioc = QIO_CHANNEL(qio_channel_file_new_fd(master_fd));
8aa33caf 1471 s->timer_tag = 0;
6f97dba0 1472
1f51470d 1473 return chr;
6f97dba0
AL		 1474}
1475
1476static void tty_serial_init(int fd, int speed,
1477 int parity, int data_bits, int stop_bits)
1478{
1479 struct termios tty;
1480 speed_t spd;
1481
1482#if 0
1483 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1484 speed, parity, data_bits, stop_bits);
1485#endif
1486 tcgetattr (fd, &tty);
1487
45eea13b
SW		 1488#define check_speed(val) if (speed <= val) { spd = B##val; break; }
1489 speed = speed * 10 / 11;
1490 do {
1491 check_speed(50);
1492 check_speed(75);
1493 check_speed(110);
1494 check_speed(134);
1495 check_speed(150);
1496 check_speed(200);
1497 check_speed(300);
1498 check_speed(600);
1499 check_speed(1200);
1500 check_speed(1800);
1501 check_speed(2400);
1502 check_speed(4800);
1503 check_speed(9600);
1504 check_speed(19200);
1505 check_speed(38400);
1506 /* Non-Posix values follow. They may be unsupported on some systems. */
1507 check_speed(57600);
1508 check_speed(115200);
1509#ifdef B230400
1510 check_speed(230400);
1511#endif
1512#ifdef B460800
1513 check_speed(460800);
1514#endif
1515#ifdef B500000
1516 check_speed(500000);
1517#endif
1518#ifdef B576000
1519 check_speed(576000);
1520#endif
1521#ifdef B921600
1522 check_speed(921600);
1523#endif
1524#ifdef B1000000
1525 check_speed(1000000);
1526#endif
1527#ifdef B1152000
1528 check_speed(1152000);
1529#endif
1530#ifdef B1500000
1531 check_speed(1500000);
1532#endif
1533#ifdef B2000000
1534 check_speed(2000000);
1535#endif
1536#ifdef B2500000
1537 check_speed(2500000);
1538#endif
1539#ifdef B3000000
1540 check_speed(3000000);
1541#endif
1542#ifdef B3500000
1543 check_speed(3500000);
1544#endif
1545#ifdef B4000000
1546 check_speed(4000000);
1547#endif
6f97dba0 1548 spd = B115200;
45eea13b 1549 } while (0);
6f97dba0
AL		 1550
1551 cfsetispeed(&tty, spd);
1552 cfsetospeed(&tty, spd);
1553
1554 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1555 |INLCR|IGNCR|ICRNL|IXON);
1556 tty.c_oflag |= OPOST;
1557 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1558 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1559 switch(data_bits) {
1560 default:
1561 case 8:
1562 tty.c_cflag |= CS8;
1563 break;
1564 case 7:
1565 tty.c_cflag |= CS7;
1566 break;
1567 case 6:
1568 tty.c_cflag |= CS6;
1569 break;
1570 case 5:
1571 tty.c_cflag |= CS5;
1572 break;
1573 }
1574 switch(parity) {
1575 default:
1576 case 'N':
1577 break;
1578 case 'E':
1579 tty.c_cflag |= PARENB;
1580 break;
1581 case 'O':
1582 tty.c_cflag |= PARENB | PARODD;
1583 break;
1584 }
1585 if (stop_bits == 2)
1586 tty.c_cflag |= CSTOPB;
1587
1588 tcsetattr (fd, TCSANOW, &tty);
1589}
1590
1591static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1592{
1593 FDCharDriver *s = chr->opaque;
9894dc0c 1594 QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc_in);
6f97dba0
AL		 1595
1596 switch(cmd) {
1597 case CHR_IOCTL_SERIAL_SET_PARAMS:
1598 {
1599 QEMUSerialSetParams *ssp = arg;
9894dc0c 1600 tty_serial_init(fioc->fd,
a29753f8 1601 ssp->speed, ssp->parity,
6f97dba0
AL		 1602 ssp->data_bits, ssp->stop_bits);
1603 }
1604 break;
1605 case CHR_IOCTL_SERIAL_SET_BREAK:
1606 {
1607 int enable = *(int *)arg;
a29753f8 1608 if (enable) {
9894dc0c 1609 tcsendbreak(fioc->fd, 1);
a29753f8 1610 }
6f97dba0
AL		 1611 }
1612 break;
1613 case CHR_IOCTL_SERIAL_GET_TIOCM:
1614 {
1615 int sarg = 0;
1616 int *targ = (int *)arg;
9894dc0c 1617 ioctl(fioc->fd, TIOCMGET, &sarg);
6f97dba0 1618 *targ = 0;
b4abdfa4 1619 if (sarg & TIOCM_CTS)
6f97dba0 1620 *targ |= CHR_TIOCM_CTS;
b4abdfa4 1621 if (sarg & TIOCM_CAR)
6f97dba0 1622 *targ |= CHR_TIOCM_CAR;
b4abdfa4 1623 if (sarg & TIOCM_DSR)
6f97dba0 1624 *targ |= CHR_TIOCM_DSR;
b4abdfa4 1625 if (sarg & TIOCM_RI)
6f97dba0 1626 *targ |= CHR_TIOCM_RI;
b4abdfa4 1627 if (sarg & TIOCM_DTR)
6f97dba0 1628 *targ |= CHR_TIOCM_DTR;
b4abdfa4 1629 if (sarg & TIOCM_RTS)
6f97dba0
AL		 1630 *targ |= CHR_TIOCM_RTS;
1631 }
1632 break;
1633 case CHR_IOCTL_SERIAL_SET_TIOCM:
1634 {
1635 int sarg = *(int *)arg;
1636 int targ = 0;
9894dc0c 1637 ioctl(fioc->fd, TIOCMGET, &targ);
b4abdfa4
AJ		 1638 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1639 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1640 if (sarg & CHR_TIOCM_CTS)
1641 targ |= TIOCM_CTS;
1642 if (sarg & CHR_TIOCM_CAR)
1643 targ |= TIOCM_CAR;
1644 if (sarg & CHR_TIOCM_DSR)
1645 targ |= TIOCM_DSR;
1646 if (sarg & CHR_TIOCM_RI)
1647 targ |= TIOCM_RI;
1648 if (sarg & CHR_TIOCM_DTR)
6f97dba0 1649 targ |= TIOCM_DTR;
b4abdfa4 1650 if (sarg & CHR_TIOCM_RTS)
6f97dba0 1651 targ |= TIOCM_RTS;
9894dc0c 1652 ioctl(fioc->fd, TIOCMSET, &targ);
6f97dba0
AL		 1653 }
1654 break;
1655 default:
1656 return -ENOTSUP;
1657 }
1658 return 0;
1659}
1660
4266a134
DA		 1661static void qemu_chr_close_tty(CharDriverState *chr)
1662{
4266a134 1663 fd_chr_close(chr);
4266a134
DA		 1664}
1665
d0d7708b
DB		 1666static CharDriverState *qemu_chr_open_tty_fd(int fd,
1667 ChardevCommon *backend,
1668 Error **errp)
d59044ef
GH		 1669{
1670 CharDriverState *chr;
1671
1672 tty_serial_init(fd, 115200, 'N', 8, 1);
d0d7708b 1673 chr = qemu_chr_open_fd(fd, fd, backend, errp);
d59044ef
GH		 1674 chr->chr_ioctl = tty_serial_ioctl;
1675 chr->chr_close = qemu_chr_close_tty;
1676 return chr;
1677}
6f97dba0
AL		 1678#endif /* __linux__ || __sun__ */
1679
1680#if defined(__linux__)
e551498e
GH		 1681
1682#define HAVE_CHARDEV_PARPORT 1
1683
6f97dba0
AL		 1684typedef struct {
1685 int fd;
1686 int mode;
1687} ParallelCharDriver;
1688
1689static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1690{
1691 if (s->mode != mode) {
1692 int m = mode;
1693 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1694 return 0;
1695 s->mode = mode;
1696 }
1697 return 1;
1698}
1699
1700static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1701{
1702 ParallelCharDriver *drv = chr->opaque;
1703 int fd = drv->fd;
1704 uint8_t b;
1705
1706 switch(cmd) {
1707 case CHR_IOCTL_PP_READ_DATA:
1708 if (ioctl(fd, PPRDATA, &b) < 0)
1709 return -ENOTSUP;
1710 *(uint8_t *)arg = b;
1711 break;
1712 case CHR_IOCTL_PP_WRITE_DATA:
1713 b = *(uint8_t *)arg;
1714 if (ioctl(fd, PPWDATA, &b) < 0)
1715 return -ENOTSUP;
1716 break;
1717 case CHR_IOCTL_PP_READ_CONTROL:
1718 if (ioctl(fd, PPRCONTROL, &b) < 0)
1719 return -ENOTSUP;
1720 /* Linux gives only the lowest bits, and no way to know data
1721 direction! For better compatibility set the fixed upper
1722 bits. */
1723 *(uint8_t *)arg = b | 0xc0;
1724 break;
1725 case CHR_IOCTL_PP_WRITE_CONTROL:
1726 b = *(uint8_t *)arg;
1727 if (ioctl(fd, PPWCONTROL, &b) < 0)
1728 return -ENOTSUP;
1729 break;
1730 case CHR_IOCTL_PP_READ_STATUS:
1731 if (ioctl(fd, PPRSTATUS, &b) < 0)
1732 return -ENOTSUP;
1733 *(uint8_t *)arg = b;
1734 break;
1735 case CHR_IOCTL_PP_DATA_DIR:
1736 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1737 return -ENOTSUP;
1738 break;
1739 case CHR_IOCTL_PP_EPP_READ_ADDR:
1740 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1741 struct ParallelIOArg *parg = arg;
1742 int n = read(fd, parg->buffer, parg->count);
1743 if (n != parg->count) {
1744 return -EIO;
1745 }
1746 }
1747 break;
1748 case CHR_IOCTL_PP_EPP_READ:
1749 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1750 struct ParallelIOArg *parg = arg;
1751 int n = read(fd, parg->buffer, parg->count);
1752 if (n != parg->count) {
1753 return -EIO;
1754 }
1755 }
1756 break;
1757 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1758 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1759 struct ParallelIOArg *parg = arg;
1760 int n = write(fd, parg->buffer, parg->count);
1761 if (n != parg->count) {
1762 return -EIO;
1763 }
1764 }
1765 break;
1766 case CHR_IOCTL_PP_EPP_WRITE:
1767 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1768 struct ParallelIOArg *parg = arg;
1769 int n = write(fd, parg->buffer, parg->count);
1770 if (n != parg->count) {
1771 return -EIO;
1772 }
1773 }
1774 break;
1775 default:
1776 return -ENOTSUP;
1777 }
1778 return 0;
1779}
1780
1781static void pp_close(CharDriverState *chr)
1782{
1783 ParallelCharDriver *drv = chr->opaque;
1784 int fd = drv->fd;
1785
1786 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1787 ioctl(fd, PPRELEASE);
1788 close(fd);
7267c094 1789 g_free(drv);
a425d23f 1790 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1791}
1792
d0d7708b
DB		 1793static CharDriverState *qemu_chr_open_pp_fd(int fd,
1794 ChardevCommon *backend,
1795 Error **errp)
6f97dba0
AL		 1796{
1797 CharDriverState *chr;
1798 ParallelCharDriver *drv;
6f97dba0
AL		 1799
1800 if (ioctl(fd, PPCLAIM) < 0) {
38bfb1a6 1801 error_setg_errno(errp, errno, "not a parallel port");
6f97dba0 1802 close(fd);
1f51470d 1803 return NULL;
6f97dba0
AL		 1804 }
1805
d0d7708b
DB		 1806 chr = qemu_chr_alloc(backend, errp);
1807 if (!chr) {
1808 return NULL;
1809 }
27ef9cb0
PB		 1810
1811 drv = g_new0(ParallelCharDriver, 1);
1812 chr->opaque = drv;
6f97dba0
AL		 1813 chr->chr_write = null_chr_write;
1814 chr->chr_ioctl = pp_ioctl;
1815 chr->chr_close = pp_close;
27ef9cb0
PB		 1816
1817 drv->fd = fd;
1818 drv->mode = IEEE1284_MODE_COMPAT;
6f97dba0 1819
1f51470d 1820 return chr;
6f97dba0
AL		 1821}
1822#endif /* __linux__ */
1823
a167ba50 1824#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
e551498e
GH		 1825
1826#define HAVE_CHARDEV_PARPORT 1
1827
6972f935
BS		 1828static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1829{
e0efb993 1830 int fd = (int)(intptr_t)chr->opaque;
6972f935
BS		 1831 uint8_t b;
1832
1833 switch(cmd) {
1834 case CHR_IOCTL_PP_READ_DATA:
1835 if (ioctl(fd, PPIGDATA, &b) < 0)
1836 return -ENOTSUP;
1837 *(uint8_t *)arg = b;
1838 break;
1839 case CHR_IOCTL_PP_WRITE_DATA:
1840 b = *(uint8_t *)arg;
1841 if (ioctl(fd, PPISDATA, &b) < 0)
1842 return -ENOTSUP;
1843 break;
1844 case CHR_IOCTL_PP_READ_CONTROL:
1845 if (ioctl(fd, PPIGCTRL, &b) < 0)
1846 return -ENOTSUP;
1847 *(uint8_t *)arg = b;
1848 break;
1849 case CHR_IOCTL_PP_WRITE_CONTROL:
1850 b = *(uint8_t *)arg;
1851 if (ioctl(fd, PPISCTRL, &b) < 0)
1852 return -ENOTSUP;
1853 break;
1854 case CHR_IOCTL_PP_READ_STATUS:
1855 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1856 return -ENOTSUP;
1857 *(uint8_t *)arg = b;
1858 break;
1859 default:
1860 return -ENOTSUP;
1861 }
1862 return 0;
1863}
1864
d0d7708b 1865static CharDriverState *qemu_chr_open_pp_fd(int fd,
0850d49c 1866 ChardevCommon *backend,
d0d7708b 1867 Error **errp)
6972f935
BS		 1868{
1869 CharDriverState *chr;
6972f935 1870
0850d49c 1871 chr = qemu_chr_alloc(backend, errp);
d0d7708b
DB		 1872 if (!chr) {
1873 return NULL;
1874 }
e0efb993 1875 chr->opaque = (void *)(intptr_t)fd;
6972f935
BS		 1876 chr->chr_write = null_chr_write;
1877 chr->chr_ioctl = pp_ioctl;
bd5c51ee 1878 chr->explicit_be_open = true;
1f51470d 1879 return chr;
6972f935
BS		 1880}
1881#endif
1882
6f97dba0
AL		 1883#else /* _WIN32 */
1884
d809ab95
PB		 1885#define HAVE_CHARDEV_SERIAL 1
1886
6f97dba0
AL		 1887typedef struct {
1888 int max_size;
1889 HANDLE hcom, hrecv, hsend;
9005b2a7 1890 OVERLAPPED orecv;
6f97dba0
AL		 1891 BOOL fpipe;
1892 DWORD len;
9005b2a7
PB		 1893
1894 /* Protected by the CharDriverState chr_write_lock. */
1895 OVERLAPPED osend;
6f97dba0
AL		 1896} WinCharState;
1897
db418a0a
FC		 1898typedef struct {
1899 HANDLE hStdIn;
1900 HANDLE hInputReadyEvent;
1901 HANDLE hInputDoneEvent;
1902 HANDLE hInputThread;
1903 uint8_t win_stdio_buf;
1904} WinStdioCharState;
1905
6f97dba0
AL		 1906#define NSENDBUF 2048
1907#define NRECVBUF 2048
1908#define MAXCONNECT 1
1909#define NTIMEOUT 5000
1910
1911static int win_chr_poll(void *opaque);
1912static int win_chr_pipe_poll(void *opaque);
1913
1914static void win_chr_close(CharDriverState *chr)
1915{
1916 WinCharState *s = chr->opaque;
1917
1918 if (s->hsend) {
1919 CloseHandle(s->hsend);
1920 s->hsend = NULL;
1921 }
1922 if (s->hrecv) {
1923 CloseHandle(s->hrecv);
1924 s->hrecv = NULL;
1925 }
1926 if (s->hcom) {
1927 CloseHandle(s->hcom);
1928 s->hcom = NULL;
1929 }
1930 if (s->fpipe)
1931 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1932 else
1933 qemu_del_polling_cb(win_chr_poll, chr);
793cbfb5 1934
a425d23f 1935 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1936}
1937
6511d396 1938static int win_chr_init(CharDriverState *chr, const char *filename, Error **errp)
6f97dba0
AL		 1939{
1940 WinCharState *s = chr->opaque;
1941 COMMCONFIG comcfg;
1942 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1943 COMSTAT comstat;
1944 DWORD size;
1945 DWORD err;
1946
1947 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1948 if (!s->hsend) {
6511d396 1949 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 1950 goto fail;
1951 }
1952 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1953 if (!s->hrecv) {
6511d396 1954 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 1955 goto fail;
1956 }
1957
1958 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1959 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1960 if (s->hcom == INVALID_HANDLE_VALUE) {
6511d396 1961 error_setg(errp, "Failed CreateFile (%lu)", GetLastError());
6f97dba0
AL		 1962 s->hcom = NULL;
1963 goto fail;
1964 }
1965
1966 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
6511d396 1967 error_setg(errp, "Failed SetupComm");
6f97dba0
AL		 1968 goto fail;
1969 }
1970
1971 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1972 size = sizeof(COMMCONFIG);
1973 GetDefaultCommConfig(filename, &comcfg, &size);
1974 comcfg.dcb.DCBlength = sizeof(DCB);
1975 CommConfigDialog(filename, NULL, &comcfg);
1976
1977 if (!SetCommState(s->hcom, &comcfg.dcb)) {
6511d396 1978 error_setg(errp, "Failed SetCommState");
6f97dba0
AL		 1979 goto fail;
1980 }
1981
1982 if (!SetCommMask(s->hcom, EV_ERR)) {
6511d396 1983 error_setg(errp, "Failed SetCommMask");
6f97dba0
AL		 1984 goto fail;
1985 }
1986
1987 cto.ReadIntervalTimeout = MAXDWORD;
1988 if (!SetCommTimeouts(s->hcom, &cto)) {
6511d396 1989 error_setg(errp, "Failed SetCommTimeouts");
6f97dba0
AL		 1990 goto fail;
1991 }
1992
1993 if (!ClearCommError(s->hcom, &err, &comstat)) {
6511d396 1994 error_setg(errp, "Failed ClearCommError");
6f97dba0
AL		 1995 goto fail;
1996 }
1997 qemu_add_polling_cb(win_chr_poll, chr);
1998 return 0;
1999
2000 fail:
2001 win_chr_close(chr);
2002 return -1;
2003}
2004
9005b2a7 2005/* Called with chr_write_lock held. */
6f97dba0
AL		 2006static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
2007{
2008 WinCharState *s = chr->opaque;
2009 DWORD len, ret, size, err;
2010
2011 len = len1;
2012 ZeroMemory(&s->osend, sizeof(s->osend));
2013 s->osend.hEvent = s->hsend;
2014 while (len > 0) {
2015 if (s->hsend)
2016 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
2017 else
2018 ret = WriteFile(s->hcom, buf, len, &size, NULL);
2019 if (!ret) {
2020 err = GetLastError();
2021 if (err == ERROR_IO_PENDING) {
2022 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
2023 if (ret) {
2024 buf += size;
2025 len -= size;
2026 } else {
2027 break;
2028 }
2029 } else {
2030 break;
2031 }
2032 } else {
2033 buf += size;
2034 len -= size;
2035 }
2036 }
2037 return len1 - len;
2038}
2039
2040static int win_chr_read_poll(CharDriverState *chr)
2041{
2042 WinCharState *s = chr->opaque;
2043
909cda12 2044 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2045 return s->max_size;
2046}
2047
2048static void win_chr_readfile(CharDriverState *chr)
2049{
2050 WinCharState *s = chr->opaque;
2051 int ret, err;
9bd7854e 2052 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2053 DWORD size;
2054
2055 ZeroMemory(&s->orecv, sizeof(s->orecv));
2056 s->orecv.hEvent = s->hrecv;
2057 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
2058 if (!ret) {
2059 err = GetLastError();
2060 if (err == ERROR_IO_PENDING) {
2061 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
2062 }
2063 }
2064
2065 if (size > 0) {
fa5efccb 2066 qemu_chr_be_write(chr, buf, size);
6f97dba0
AL		 2067 }
2068}
2069
2070static void win_chr_read(CharDriverState *chr)
2071{
2072 WinCharState *s = chr->opaque;
2073
2074 if (s->len > s->max_size)
2075 s->len = s->max_size;
2076 if (s->len == 0)
2077 return;
2078
2079 win_chr_readfile(chr);
2080}
2081
2082static int win_chr_poll(void *opaque)
2083{
2084 CharDriverState *chr = opaque;
2085 WinCharState *s = chr->opaque;
2086 COMSTAT status;
2087 DWORD comerr;
2088
2089 ClearCommError(s->hcom, &comerr, &status);
2090 if (status.cbInQue > 0) {
2091 s->len = status.cbInQue;
2092 win_chr_read_poll(chr);
2093 win_chr_read(chr);
2094 return 1;
2095 }
2096 return 0;
2097}
2098
6511d396 2099static CharDriverState *qemu_chr_open_win_path(const char *filename,
d0d7708b 2100 ChardevCommon *backend,
6511d396 2101 Error **errp)
6f97dba0
AL		 2102{
2103 CharDriverState *chr;
2104 WinCharState *s;
2105
d0d7708b
DB		 2106 chr = qemu_chr_alloc(backend, errp);
2107 if (!chr) {
2108 return NULL;
2109 }
2d528d45 2110 s = g_new0(WinCharState, 1);
6f97dba0
AL		 2111 chr->opaque = s;
2112 chr->chr_write = win_chr_write;
2113 chr->chr_close = win_chr_close;
2114
6511d396 2115 if (win_chr_init(chr, filename, errp) < 0) {
2e02e18b 2116 g_free(s);
d0d7708b 2117 qemu_chr_free_common(chr);
1f51470d 2118 return NULL;
6f97dba0 2119 }
1f51470d 2120 return chr;
6f97dba0
AL		 2121}
2122
2123static int win_chr_pipe_poll(void *opaque)
2124{
2125 CharDriverState *chr = opaque;
2126 WinCharState *s = chr->opaque;
2127 DWORD size;
2128
2129 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
2130 if (size > 0) {
2131 s->len = size;
2132 win_chr_read_poll(chr);
2133 win_chr_read(chr);
2134 return 1;
2135 }
2136 return 0;
2137}
2138
20cbe7a2
PB		 2139static int win_chr_pipe_init(CharDriverState *chr, const char *filename,
2140 Error **errp)
6f97dba0
AL		 2141{
2142 WinCharState *s = chr->opaque;
2143 OVERLAPPED ov;
2144 int ret;
2145 DWORD size;
0ff0fad2 2146 char *openname;
6f97dba0
AL		 2147
2148 s->fpipe = TRUE;
2149
2150 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
2151 if (!s->hsend) {
20cbe7a2 2152 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 2153 goto fail;
2154 }
2155 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
2156 if (!s->hrecv) {
20cbe7a2 2157 error_setg(errp, "Failed CreateEvent");
6f97dba0
AL		 2158 goto fail;
2159 }
2160
0ff0fad2 2161 openname = g_strdup_printf("\\\\.\\pipe\\%s", filename);
6f97dba0
AL		 2162 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
2163 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
2164 PIPE_WAIT,
2165 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
0ff0fad2 2166 g_free(openname);
6f97dba0 2167 if (s->hcom == INVALID_HANDLE_VALUE) {
20cbe7a2 2168 error_setg(errp, "Failed CreateNamedPipe (%lu)", GetLastError());
6f97dba0
AL		 2169 s->hcom = NULL;
2170 goto fail;
2171 }
2172
2173 ZeroMemory(&ov, sizeof(ov));
2174 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
2175 ret = ConnectNamedPipe(s->hcom, &ov);
2176 if (ret) {
20cbe7a2 2177 error_setg(errp, "Failed ConnectNamedPipe");
6f97dba0
AL		 2178 goto fail;
2179 }
2180
2181 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
2182 if (!ret) {
20cbe7a2 2183 error_setg(errp, "Failed GetOverlappedResult");
6f97dba0
AL		 2184 if (ov.hEvent) {
2185 CloseHandle(ov.hEvent);
2186 ov.hEvent = NULL;
2187 }
2188 goto fail;
2189 }
2190
2191 if (ov.hEvent) {
2192 CloseHandle(ov.hEvent);
2193 ov.hEvent = NULL;
2194 }
2195 qemu_add_polling_cb(win_chr_pipe_poll, chr);
2196 return 0;
2197
2198 fail:
2199 win_chr_close(chr);
2200 return -1;
2201}
2202
2203
20cbe7a2
PB		 2204static CharDriverState *qemu_chr_open_pipe(const char *id,
2205 ChardevBackend *backend,
2206 ChardevReturn *ret,
2207 Error **errp)
6f97dba0 2208{
32bafa8f 2209 ChardevHostdev *opts = backend->u.pipe.data;
548cbb36 2210 const char *filename = opts->device;
6f97dba0
AL		 2211 CharDriverState *chr;
2212 WinCharState *s;
f194a1ae 2213 ChardevCommon *common = qapi_ChardevHostdev_base(opts);
6f97dba0 2214
d0d7708b
DB		 2215 chr = qemu_chr_alloc(common, errp);
2216 if (!chr) {
2217 return NULL;
2218 }
2d528d45 2219 s = g_new0(WinCharState, 1);
6f97dba0
AL		 2220 chr->opaque = s;
2221 chr->chr_write = win_chr_write;
2222 chr->chr_close = win_chr_close;
2223
20cbe7a2 2224 if (win_chr_pipe_init(chr, filename, errp) < 0) {
2e02e18b 2225 g_free(s);
d0d7708b 2226 qemu_chr_free_common(chr);
1f51470d 2227 return NULL;
6f97dba0 2228 }
1f51470d 2229 return chr;
6f97dba0
AL		 2230}
2231
d0d7708b
DB		 2232static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out,
2233 ChardevCommon *backend,
2234 Error **errp)
6f97dba0
AL		 2235{
2236 CharDriverState *chr;
2237 WinCharState *s;
2238
d0d7708b
DB		 2239 chr = qemu_chr_alloc(backend, errp);
2240 if (!chr) {
2241 return NULL;
2242 }
2d528d45 2243 s = g_new0(WinCharState, 1);
6f97dba0
AL		 2244 s->hcom = fd_out;
2245 chr->opaque = s;
2246 chr->chr_write = win_chr_write;
1f51470d 2247 return chr;
6f97dba0
AL		 2248}
2249
122e5ed4
PB		 2250static CharDriverState *qemu_chr_open_win_con(const char *id,
2251 ChardevBackend *backend,
2252 ChardevReturn *ret,
2253 Error **errp)
6f97dba0 2254{
32bafa8f 2255 ChardevCommon *common = backend->u.console.data;
d0d7708b
DB		 2256 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE),
2257 common, errp);
6f97dba0
AL		 2258}
2259
db418a0a
FC		 2260static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
2261{
2262 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
2263 DWORD dwSize;
2264 int len1;
2265
2266 len1 = len;
2267
2268 while (len1 > 0) {
2269 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
2270 break;
2271 }
2272 buf += dwSize;
2273 len1 -= dwSize;
2274 }
2275
2276 return len - len1;
2277}
2278
2279static void win_stdio_wait_func(void *opaque)
2280{
2281 CharDriverState *chr = opaque;
2282 WinStdioCharState *stdio = chr->opaque;
2283 INPUT_RECORD buf[4];
2284 int ret;
2285 DWORD dwSize;
2286 int i;
2287
dff7424d 2288 ret = ReadConsoleInput(stdio->hStdIn, buf, ARRAY_SIZE(buf), &dwSize);
db418a0a
FC		 2289
2290 if (!ret) {
2291 /* Avoid error storm */
2292 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2293 return;
2294 }
2295
2296 for (i = 0; i < dwSize; i++) {
2297 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
2298
2299 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
2300 int j;
2301 if (kev->uChar.AsciiChar != 0) {
2302 for (j = 0; j < kev->wRepeatCount; j++) {
2303 if (qemu_chr_be_can_write(chr)) {
2304 uint8_t c = kev->uChar.AsciiChar;
2305 qemu_chr_be_write(chr, &c, 1);
2306 }
2307 }
2308 }
2309 }
2310 }
2311}
2312
2313static DWORD WINAPI win_stdio_thread(LPVOID param)
2314{
2315 CharDriverState *chr = param;
2316 WinStdioCharState *stdio = chr->opaque;
2317 int ret;
2318 DWORD dwSize;
2319
2320 while (1) {
2321
2322 /* Wait for one byte */
2323 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
2324
2325 /* Exit in case of error, continue if nothing read */
2326 if (!ret) {
2327 break;
2328 }
2329 if (!dwSize) {
2330 continue;
2331 }
2332
2333 /* Some terminal emulator returns \r\n for Enter, just pass \n */
2334 if (stdio->win_stdio_buf == '\r') {
2335 continue;
2336 }
2337
2338 /* Signal the main thread and wait until the byte was eaten */
2339 if (!SetEvent(stdio->hInputReadyEvent)) {
2340 break;
2341 }
2342 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
2343 != WAIT_OBJECT_0) {
2344 break;
2345 }
2346 }
2347
2348 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2349 return 0;
2350}
2351
2352static void win_stdio_thread_wait_func(void *opaque)
2353{
2354 CharDriverState *chr = opaque;
2355 WinStdioCharState *stdio = chr->opaque;
2356
2357 if (qemu_chr_be_can_write(chr)) {
2358 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
2359 }
2360
2361 SetEvent(stdio->hInputDoneEvent);
2362}
2363
2364static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
2365{
2366 WinStdioCharState *stdio = chr->opaque;
2367 DWORD dwMode = 0;
2368
2369 GetConsoleMode(stdio->hStdIn, &dwMode);
2370
2371 if (echo) {
2372 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
2373 } else {
2374 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
2375 }
2376}
2377
2378static void win_stdio_close(CharDriverState *chr)
2379{
2380 WinStdioCharState *stdio = chr->opaque;
2381
2382 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
2383 CloseHandle(stdio->hInputReadyEvent);
2384 }
2385 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
2386 CloseHandle(stdio->hInputDoneEvent);
2387 }
2388 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
2389 TerminateThread(stdio->hInputThread, 0);
2390 }
2391
2392 g_free(chr->opaque);
2393 g_free(chr);
db418a0a
FC		 2394}
2395
8c84b25d
PB		 2396static CharDriverState *qemu_chr_open_stdio(const char *id,
2397 ChardevBackend *backend,
2398 ChardevReturn *ret,
2399 Error **errp)
db418a0a
FC		 2400{
2401 CharDriverState *chr;
2402 WinStdioCharState *stdio;
2403 DWORD dwMode;
2404 int is_console = 0;
32bafa8f 2405 ChardevCommon *common = qapi_ChardevStdio_base(backend->u.stdio.data);
db418a0a 2406
d0d7708b
DB		 2407 chr = qemu_chr_alloc(common, errp);
2408 if (!chr) {
2409 return NULL;
2410 }
2d528d45 2411 stdio = g_new0(WinStdioCharState, 1);
db418a0a
FC		 2412
2413 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
2414 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
8c84b25d
PB		 2415 error_setg(errp, "cannot open stdio: invalid handle");
2416 return NULL;
db418a0a
FC		 2417 }
2418
2419 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
2420
2421 chr->opaque = stdio;
2422 chr->chr_write = win_stdio_write;
2423 chr->chr_close = win_stdio_close;
2424
ed7a1540
AL		 2425 if (is_console) {
2426 if (qemu_add_wait_object(stdio->hStdIn,
2427 win_stdio_wait_func, chr)) {
8c84b25d
PB		 2428 error_setg(errp, "qemu_add_wait_object: failed");
2429 goto err1;
ed7a1540
AL		 2430 }
2431 } else {
2432 DWORD dwId;
2433
2434 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2435 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
8c84b25d 2436 if (stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
ed7a1540 2437 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
8c84b25d
PB		 2438 error_setg(errp, "cannot create event");
2439 goto err2;
ed7a1540
AL		 2440 }
2441 if (qemu_add_wait_object(stdio->hInputReadyEvent,
2442 win_stdio_thread_wait_func, chr)) {
8c84b25d
PB		 2443 error_setg(errp, "qemu_add_wait_object: failed");
2444 goto err2;
2445 }
2446 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
2447 chr, 0, &dwId);
2448
2449 if (stdio->hInputThread == INVALID_HANDLE_VALUE) {
2450 error_setg(errp, "cannot create stdio thread");
2451 goto err3;
db418a0a
FC		 2452 }
2453 }
2454
2455 dwMode |= ENABLE_LINE_INPUT;
2456
ed7a1540 2457 if (is_console) {
db418a0a
FC		 2458 /* set the terminal in raw mode */
2459 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2460 dwMode |= ENABLE_PROCESSED_INPUT;
2461 }
2462
2463 SetConsoleMode(stdio->hStdIn, dwMode);
2464
2465 chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
2466 qemu_chr_fe_set_echo(chr, false);
2467
1f51470d 2468 return chr;
8c84b25d
PB		 2469
2470err3:
2471 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2472err2:
2473 CloseHandle(stdio->hInputReadyEvent);
2474 CloseHandle(stdio->hInputDoneEvent);
2475err1:
2476 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2477 return NULL;
db418a0a 2478}
6f97dba0
AL		 2479#endif /* !_WIN32 */
2480
5ab8211b 2481
6f97dba0
AL		 2482/***********************************************************/
2483/* UDP Net console */
2484
2485typedef struct {
9894dc0c 2486 QIOChannel *ioc;
9bd7854e 2487 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2488 int bufcnt;
2489 int bufptr;
2490 int max_size;
2491} NetCharDriver;
2492
9005b2a7 2493/* Called with chr_write_lock held. */
6f97dba0
AL		 2494static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2495{
2496 NetCharDriver *s = chr->opaque;
76a9644b 2497
9894dc0c
DB		 2498 return qio_channel_write(
2499 s->ioc, (const char *)buf, len, NULL);
6f97dba0
AL		 2500}
2501
2502static int udp_chr_read_poll(void *opaque)
2503{
2504 CharDriverState *chr = opaque;
2505 NetCharDriver *s = chr->opaque;
2506
909cda12 2507 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2508
2509 /* If there were any stray characters in the queue process them
2510 * first
2511 */
2512 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
fa5efccb 2513 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
6f97dba0 2514 s->bufptr++;
909cda12 2515 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2516 }
2517 return s->max_size;
2518}
2519
9894dc0c 2520static gboolean udp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 2521{
2522 CharDriverState *chr = opaque;
2523 NetCharDriver *s = chr->opaque;
9894dc0c 2524 ssize_t ret;
6f97dba0 2525
cdbf6e16
PB		 2526 if (s->max_size == 0) {
2527 return TRUE;
2528 }
9894dc0c
DB		 2529 ret = qio_channel_read(
2530 s->ioc, (char *)s->buf, sizeof(s->buf), NULL);
2531 if (ret <= 0) {
26da70c7 2532 remove_fd_in_watch(chr);
76a9644b
AL		 2533 return FALSE;
2534 }
9894dc0c 2535 s->bufcnt = ret;
6f97dba0
AL		 2536
2537 s->bufptr = 0;
2538 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
fa5efccb 2539 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
6f97dba0 2540 s->bufptr++;
909cda12 2541 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0 2542 }
76a9644b
AL		 2543
2544 return TRUE;
6f97dba0
AL		 2545}
2546
2547static void udp_chr_update_read_handler(CharDriverState *chr)
2548{
2549 NetCharDriver *s = chr->opaque;
2550
26da70c7 2551 remove_fd_in_watch(chr);
9894dc0c
DB		 2552 if (s->ioc) {
2553 chr->fd_in_tag = io_add_watch_poll(s->ioc,
2554 udp_chr_read_poll,
7ba9addc 2555 udp_chr_read, chr);
6f97dba0
AL		 2556 }
2557}
2558
819f56b7
AL		 2559static void udp_chr_close(CharDriverState *chr)
2560{
2561 NetCharDriver *s = chr->opaque;
26da70c7
AS		 2562
2563 remove_fd_in_watch(chr);
9894dc0c
DB		 2564 if (s->ioc) {
2565 object_unref(OBJECT(s->ioc));
819f56b7 2566 }
7267c094 2567 g_free(s);
a425d23f 2568 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
819f56b7
AL		 2569}
2570
9894dc0c
DB		 2571static CharDriverState *qemu_chr_open_udp(QIOChannelSocket *sioc,
2572 ChardevCommon *backend,
2573 Error **errp)
6f97dba0
AL		 2574{
2575 CharDriverState *chr = NULL;
2576 NetCharDriver *s = NULL;
6f97dba0 2577
d0d7708b
DB		 2578 chr = qemu_chr_alloc(backend, errp);
2579 if (!chr) {
2580 return NULL;
2581 }
2d528d45 2582 s = g_new0(NetCharDriver, 1);
6f97dba0 2583
9894dc0c 2584 s->ioc = QIO_CHANNEL(sioc);
6f97dba0
AL		 2585 s->bufcnt = 0;
2586 s->bufptr = 0;
2587 chr->opaque = s;
2588 chr->chr_write = udp_chr_write;
2589 chr->chr_update_read_handler = udp_chr_update_read_handler;
819f56b7 2590 chr->chr_close = udp_chr_close;
bd5c51ee
MR		 2591 /* be isn't opened until we get a connection */
2592 chr->explicit_be_open = true;
1f51470d 2593 return chr;
3ecc059d 2594}
6f97dba0 2595
6f97dba0
AL		 2596/***********************************************************/
2597/* TCP Net console */
2598
2599typedef struct {
a8fb5427
DB		 2600 QIOChannel *ioc; /* Client I/O channel */
2601 QIOChannelSocket *sioc; /* Client master channel */
9894dc0c 2602 QIOChannelSocket *listen_ioc;
7ba9addc 2603 guint listen_tag;
a8fb5427 2604 QCryptoTLSCreds *tls_creds;
6f97dba0
AL		 2605 int connected;
2606 int max_size;
2607 int do_telnetopt;
2608 int do_nodelay;
2609 int is_unix;
c76bf6bb 2610 int *read_msgfds;
9894dc0c 2611 size_t read_msgfds_num;
d39aac7a 2612 int *write_msgfds;
9894dc0c 2613 size_t write_msgfds_num;
cfb429cb
CM		 2614
2615 SocketAddress *addr;
2616 bool is_listen;
2617 bool is_telnet;
5dd1f02b
CM		 2618
2619 guint reconnect_timer;
2620 int64_t reconnect_time;
5008e5b7 2621 bool connect_err_reported;
6f97dba0
AL		 2622} TCPCharDriver;
2623
5dd1f02b
CM		 2624static gboolean socket_reconnect_timeout(gpointer opaque);
2625
2626static void qemu_chr_socket_restart_timer(CharDriverState *chr)
2627{
2628 TCPCharDriver *s = chr->opaque;
2629 assert(s->connected == 0);
2630 s->reconnect_timer = g_timeout_add_seconds(s->reconnect_time,
2631 socket_reconnect_timeout, chr);
2632}
2633
5008e5b7
CM		 2634static void check_report_connect_error(CharDriverState *chr,
2635 Error *err)
2636{
2637 TCPCharDriver *s = chr->opaque;
2638
2639 if (!s->connect_err_reported) {
2640 error_report("Unable to connect character device %s: %s",
2641 chr->label, error_get_pretty(err));
2642 s->connect_err_reported = true;
2643 }
2644 qemu_chr_socket_restart_timer(chr);
2645}
2646
9894dc0c
DB		 2647static gboolean tcp_chr_accept(QIOChannel *chan,
2648 GIOCondition cond,
2649 void *opaque);
d39aac7a 2650
9005b2a7 2651/* Called with chr_write_lock held. */
6f97dba0
AL		 2652static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2653{
2654 TCPCharDriver *s = chr->opaque;
2655 if (s->connected) {
9894dc0c
DB		 2656 int ret = io_channel_send_full(s->ioc, buf, len,
2657 s->write_msgfds,
2658 s->write_msgfds_num);
2659
2660 /* free the written msgfds, no matter what */
2661 if (s->write_msgfds_num) {
2662 g_free(s->write_msgfds);
2663 s->write_msgfds = 0;
2664 s->write_msgfds_num = 0;
d39aac7a 2665 }
9894dc0c
DB		 2666
2667 return ret;
455aa1e0 2668 } else {
6db0fdce 2669 /* XXX: indicate an error ? */
455aa1e0 2670 return len;
6f97dba0
AL		 2671 }
2672}
2673
2674static int tcp_chr_read_poll(void *opaque)
2675{
2676 CharDriverState *chr = opaque;
2677 TCPCharDriver *s = chr->opaque;
2678 if (!s->connected)
2679 return 0;
909cda12 2680 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2681 return s->max_size;
2682}
2683
2684#define IAC 255
2685#define IAC_BREAK 243
2686static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
2687 TCPCharDriver *s,
2688 uint8_t *buf, int *size)
2689{
2690 /* Handle any telnet client's basic IAC options to satisfy char by
2691 * char mode with no echo. All IAC options will be removed from
2692 * the buf and the do_telnetopt variable will be used to track the
2693 * state of the width of the IAC information.
2694 *
2695 * IAC commands come in sets of 3 bytes with the exception of the
2696 * "IAC BREAK" command and the double IAC.
2697 */
2698
2699 int i;
2700 int j = 0;
2701
2702 for (i = 0; i < *size; i++) {
2703 if (s->do_telnetopt > 1) {
2704 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2705 /* Double IAC means send an IAC */
2706 if (j != i)
2707 buf[j] = buf[i];
2708 j++;
2709 s->do_telnetopt = 1;
2710 } else {
2711 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2712 /* Handle IAC break commands by sending a serial break */
a425d23f 2713 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
6f97dba0
AL		 2714 s->do_telnetopt++;
2715 }
2716 s->do_telnetopt++;
2717 }
2718 if (s->do_telnetopt >= 4) {
2719 s->do_telnetopt = 1;
2720 }
2721 } else {
2722 if ((unsigned char)buf[i] == IAC) {
2723 s->do_telnetopt = 2;
2724 } else {
2725 if (j != i)
2726 buf[j] = buf[i];
2727 j++;
2728 }
2729 }
2730 }
2731 *size = j;
2732}
2733
c76bf6bb 2734static int tcp_get_msgfds(CharDriverState *chr, int *fds, int num)
7d174059
MM		 2735{
2736 TCPCharDriver *s = chr->opaque;
c76bf6bb
NN		 2737 int to_copy = (s->read_msgfds_num < num) ? s->read_msgfds_num : num;
2738
c4095726
MT		 2739 assert(num <= TCP_MAX_FDS);
2740
c76bf6bb 2741 if (to_copy) {
d2fc39b4
SH		 2742 int i;
2743
c76bf6bb
NN		 2744 memcpy(fds, s->read_msgfds, to_copy * sizeof(int));
2745
d2fc39b4
SH		 2746 /* Close unused fds */
2747 for (i = to_copy; i < s->read_msgfds_num; i++) {
2748 close(s->read_msgfds[i]);
2749 }
2750
c76bf6bb
NN		 2751 g_free(s->read_msgfds);
2752 s->read_msgfds = 0;
2753 s->read_msgfds_num = 0;
2754 }
2755
2756 return to_copy;
7d174059
MM		 2757}
2758
d39aac7a
NN		 2759static int tcp_set_msgfds(CharDriverState *chr, int *fds, int num)
2760{
2761 TCPCharDriver *s = chr->opaque;
2762
2763 /* clear old pending fd array */
ef1e1e07 2764 g_free(s->write_msgfds);
869a58af 2765 s->write_msgfds = NULL;
d39aac7a 2766
5c7eaabf
MAL		 2767 if (!s->connected ||
2768 !qio_channel_has_feature(s->ioc,
2769 QIO_CHANNEL_FEATURE_FD_PASS)) {
2770 return -1;
2771 }
2772
d39aac7a 2773 if (num) {
2d528d45 2774 s->write_msgfds = g_new(int, num);
d39aac7a
NN		 2775 memcpy(s->write_msgfds, fds, num * sizeof(int));
2776 }
2777
2778 s->write_msgfds_num = num;
2779
2780 return 0;
2781}
2782
9894dc0c 2783static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
7d174059
MM		 2784{
2785 TCPCharDriver *s = chr->opaque;
9894dc0c
DB		 2786 struct iovec iov = { .iov_base = buf, .iov_len = len };
2787 int ret;
2788 size_t i;
2789 int *msgfds = NULL;
2790 size_t msgfds_num = 0;
2791
2792 if (qio_channel_has_feature(s->ioc, QIO_CHANNEL_FEATURE_FD_PASS)) {
2793 ret = qio_channel_readv_full(s->ioc, &iov, 1,
2794 &msgfds, &msgfds_num,
2795 NULL);
2796 } else {
2797 ret = qio_channel_readv_full(s->ioc, &iov, 1,
2798 NULL, NULL,
2799 NULL);
2800 }
7d174059 2801
b6572b4f
MAL		 2802 if (ret == QIO_CHANNEL_ERR_BLOCK) {
2803 errno = EAGAIN;
2804 ret = -1;
2805 } else if (ret == -1) {
2806 errno = EIO;
2807 }
2808
9894dc0c 2809 if (msgfds_num) {
c76bf6bb
NN		 2810 /* close and clean read_msgfds */
2811 for (i = 0; i < s->read_msgfds_num; i++) {
2812 close(s->read_msgfds[i]);
2813 }
9b938c72 2814
c76bf6bb
NN		 2815 if (s->read_msgfds_num) {
2816 g_free(s->read_msgfds);
2817 }
2818
9894dc0c
DB		 2819 s->read_msgfds = msgfds;
2820 s->read_msgfds_num = msgfds_num;
7d174059 2821 }
7d174059 2822
9894dc0c
DB		 2823 for (i = 0; i < s->read_msgfds_num; i++) {
2824 int fd = s->read_msgfds[i];
2825 if (fd < 0) {
2826 continue;
2827 }
9977c894 2828
9894dc0c
DB		 2829 /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
2830 qemu_set_block(fd);
7d174059 2831
9894dc0c
DB		 2832#ifndef MSG_CMSG_CLOEXEC
2833 qemu_set_cloexec(fd);
06138651 2834#endif
06138651 2835 }
9977c894 2836
7d174059 2837 return ret;
9977c894 2838}
9977c894 2839
d3cc5bc4
AS		 2840static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
2841{
2842 TCPCharDriver *s = chr->opaque;
9894dc0c 2843 return qio_channel_create_watch(s->ioc, cond);
d3cc5bc4
AS		 2844}
2845
7b0bfdf5
NN		 2846static void tcp_chr_disconnect(CharDriverState *chr)
2847{
2848 TCPCharDriver *s = chr->opaque;
2849
342f7a9d
MAL		 2850 if (!s->connected) {
2851 return;
2852 }
2853
7b0bfdf5 2854 s->connected = 0;
9894dc0c
DB		 2855 if (s->listen_ioc) {
2856 s->listen_tag = qio_channel_add_watch(
2857 QIO_CHANNEL(s->listen_ioc), G_IO_IN, tcp_chr_accept, chr, NULL);
7b0bfdf5 2858 }
6167ebbd 2859 tcp_set_msgfds(chr, NULL, 0);
7b0bfdf5 2860 remove_fd_in_watch(chr);
a8fb5427
DB		 2861 object_unref(OBJECT(s->sioc));
2862 s->sioc = NULL;
9894dc0c
DB		 2863 object_unref(OBJECT(s->ioc));
2864 s->ioc = NULL;
0ff0fad2
DB		 2865 g_free(chr->filename);
2866 chr->filename = SocketAddress_to_str("disconnected:", s->addr,
2867 s->is_listen, s->is_telnet);
7b0bfdf5 2868 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
5dd1f02b
CM		 2869 if (s->reconnect_time) {
2870 qemu_chr_socket_restart_timer(chr);
2871 }
7b0bfdf5
NN		 2872}
2873
9894dc0c 2874static gboolean tcp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 2875{
2876 CharDriverState *chr = opaque;
2877 TCPCharDriver *s = chr->opaque;
9bd7854e 2878 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2879 int len, size;
2880
2ea5a7af 2881 if (!s->connected || s->max_size <= 0) {
cdbf6e16 2882 return TRUE;
2ea5a7af 2883 }
6f97dba0
AL		 2884 len = sizeof(buf);
2885 if (len > s->max_size)
2886 len = s->max_size;
9977c894 2887 size = tcp_chr_recv(chr, (void *)buf, len);
9894dc0c 2888 if (size == 0 || size == -1) {
6f97dba0 2889 /* connection closed */
7b0bfdf5 2890 tcp_chr_disconnect(chr);
6f97dba0
AL		 2891 } else if (size > 0) {
2892 if (s->do_telnetopt)
2893 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2894 if (size > 0)
fa5efccb 2895 qemu_chr_be_write(chr, buf, size);
6f97dba0 2896 }
2ea5a7af
AL		 2897
2898 return TRUE;
6f97dba0
AL		 2899}
2900
7b0bfdf5
NN		 2901static int tcp_chr_sync_read(CharDriverState *chr, const uint8_t *buf, int len)
2902{
2903 TCPCharDriver *s = chr->opaque;
2904 int size;
2905
2906 if (!s->connected) {
2907 return 0;
2908 }
2909
2910 size = tcp_chr_recv(chr, (void *) buf, len);
2911 if (size == 0) {
2912 /* connection closed */
2913 tcp_chr_disconnect(chr);
2914 }
2915
2916 return size;
2917}
2918
6f97dba0
AL		 2919static void tcp_chr_connect(void *opaque)
2920{
2921 CharDriverState *chr = opaque;
2922 TCPCharDriver *s = chr->opaque;
16cc4ffe 2923
0ff0fad2 2924 g_free(chr->filename);
a8fb5427
DB		 2925 chr->filename = sockaddr_to_str(
2926 &s->sioc->localAddr, s->sioc->localAddrLen,
2927 &s->sioc->remoteAddr, s->sioc->remoteAddrLen,
2928 s->is_listen, s->is_telnet);
6f97dba0
AL		 2929
2930 s->connected = 1;
9894dc0c
DB		 2931 if (s->ioc) {
2932 chr->fd_in_tag = io_add_watch_poll(s->ioc,
2933 tcp_chr_read_poll,
7ba9addc 2934 tcp_chr_read, chr);
bbdd2ad0 2935 }
fee204fd 2936 qemu_chr_be_generic_open(chr);
6f97dba0
AL		 2937}
2938
ac1b84dd
GH		 2939static void tcp_chr_update_read_handler(CharDriverState *chr)
2940{
2941 TCPCharDriver *s = chr->opaque;
2942
1e94f23d
DB		 2943 if (!s->connected) {
2944 return;
2945 }
2946
ac1b84dd 2947 remove_fd_in_watch(chr);
9894dc0c
DB		 2948 if (s->ioc) {
2949 chr->fd_in_tag = io_add_watch_poll(s->ioc,
2950 tcp_chr_read_poll,
ac1b84dd
GH		 2951 tcp_chr_read, chr);
2952 }
2953}
2954
f2001a7e
DB		 2955typedef struct {
2956 CharDriverState *chr;
2957 char buf[12];
2958 size_t buflen;
2959} TCPCharDriverTelnetInit;
2960
2961static gboolean tcp_chr_telnet_init_io(QIOChannel *ioc,
2962 GIOCondition cond G_GNUC_UNUSED,
2963 gpointer user_data)
6f97dba0 2964{
f2001a7e
DB		 2965 TCPCharDriverTelnetInit *init = user_data;
2966 ssize_t ret;
2967
2968 ret = qio_channel_write(ioc, init->buf, init->buflen, NULL);
2969 if (ret < 0) {
2970 if (ret == QIO_CHANNEL_ERR_BLOCK) {
2971 ret = 0;
2972 } else {
2973 tcp_chr_disconnect(init->chr);
2974 return FALSE;
2975 }
2976 }
2977 init->buflen -= ret;
2978
2979 if (init->buflen == 0) {
2980 tcp_chr_connect(init->chr);
2981 return FALSE;
2982 }
2983
2984 memmove(init->buf, init->buf + ret, init->buflen);
2985
2986 return TRUE;
2987}
2988
2989static void tcp_chr_telnet_init(CharDriverState *chr)
2990{
2991 TCPCharDriver *s = chr->opaque;
2992 TCPCharDriverTelnetInit *init =
2993 g_new0(TCPCharDriverTelnetInit, 1);
2994 size_t n = 0;
2995
2996 init->chr = chr;
2997 init->buflen = 12;
2998
2999#define IACSET(x, a, b, c) \
3000 do { \
3001 x[n++] = a; \
3002 x[n++] = b; \
3003 x[n++] = c; \
3004 } while (0)
3005
3006 /* Prep the telnet negotion to put telnet in binary,
3007 * no echo, single char mode */
3008 IACSET(init->buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
3009 IACSET(init->buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
3010 IACSET(init->buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
3011 IACSET(init->buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
3012
3013#undef IACSET
3014
3015 qio_channel_add_watch(
3016 s->ioc, G_IO_OUT,
3017 tcp_chr_telnet_init_io,
3018 init, NULL);
6f97dba0
AL		 3019}
3020
a8fb5427
DB		 3021
3022static void tcp_chr_tls_handshake(Object *source,
3023 Error *err,
3024 gpointer user_data)
3025{
3026 CharDriverState *chr = user_data;
3027 TCPCharDriver *s = chr->opaque;
3028
3029 if (err) {
3030 tcp_chr_disconnect(chr);
3031 } else {
3032 if (s->do_telnetopt) {
3033 tcp_chr_telnet_init(chr);
3034 } else {
3035 tcp_chr_connect(chr);
3036 }
3037 }
3038}
3039
3040
3041static void tcp_chr_tls_init(CharDriverState *chr)
3042{
3043 TCPCharDriver *s = chr->opaque;
3044 QIOChannelTLS *tioc;
3045 Error *err = NULL;
3046
3047 if (s->is_listen) {
3048 tioc = qio_channel_tls_new_server(
3049 s->ioc, s->tls_creds,
3050 NULL, /* XXX Use an ACL */
3051 &err);
3052 } else {
3053 tioc = qio_channel_tls_new_client(
3054 s->ioc, s->tls_creds,
32bafa8f 3055 s->addr->u.inet.data->host,
a8fb5427
DB		 3056 &err);
3057 }
3058 if (tioc == NULL) {
3059 error_free(err);
3060 tcp_chr_disconnect(chr);
3061 }
3062 object_unref(OBJECT(s->ioc));
3063 s->ioc = QIO_CHANNEL(tioc);
3064
3065 qio_channel_tls_handshake(tioc,
3066 tcp_chr_tls_handshake,
3067 chr,
3068 NULL);
3069}
3070
3071
9894dc0c 3072static int tcp_chr_new_client(CharDriverState *chr, QIOChannelSocket *sioc)
13661089
DB		 3073{
3074 TCPCharDriver *s = chr->opaque;
9894dc0c 3075 if (s->ioc != NULL) {
13661089 3076 return -1;
9894dc0c 3077 }
13661089 3078
9894dc0c
DB		 3079 s->ioc = QIO_CHANNEL(sioc);
3080 object_ref(OBJECT(sioc));
a8fb5427
DB		 3081 s->sioc = sioc;
3082 object_ref(OBJECT(sioc));
9894dc0c 3083
64c800f8
DB		 3084 qio_channel_set_blocking(s->ioc, false, NULL);
3085
9894dc0c
DB		 3086 if (s->do_nodelay) {
3087 qio_channel_set_delay(s->ioc, false);
3088 }
910b6368
PB		 3089 if (s->listen_tag) {
3090 g_source_remove(s->listen_tag);
3091 s->listen_tag = 0;
3092 }
f2001a7e 3093
a8fb5427
DB		 3094 if (s->tls_creds) {
3095 tcp_chr_tls_init(chr);
f2001a7e 3096 } else {
a8fb5427
DB		 3097 if (s->do_telnetopt) {
3098 tcp_chr_telnet_init(chr);
3099 } else {
3100 tcp_chr_connect(chr);
3101 }
f2001a7e 3102 }
13661089
DB		 3103
3104 return 0;
3105}
3106
9894dc0c
DB		 3107
3108static int tcp_chr_add_client(CharDriverState *chr, int fd)
3109{
3110 int ret;
3111 QIOChannelSocket *sioc;
3112
3113 sioc = qio_channel_socket_new_fd(fd, NULL);
3114 if (!sioc) {
3115 return -1;
3116 }
9894dc0c
DB		 3117 ret = tcp_chr_new_client(chr, sioc);
3118 object_unref(OBJECT(sioc));
3119 return ret;
3120}
3121
3122static gboolean tcp_chr_accept(QIOChannel *channel,
3123 GIOCondition cond,
3124 void *opaque)
6f97dba0
AL		 3125{
3126 CharDriverState *chr = opaque;
9894dc0c 3127 QIOChannelSocket *sioc;
6f97dba0 3128
9894dc0c
DB		 3129 sioc = qio_channel_socket_accept(QIO_CHANNEL_SOCKET(channel),
3130 NULL);
3131 if (!sioc) {
3132 return TRUE;
6f97dba0 3133 }
9894dc0c 3134
9894dc0c
DB		 3135 tcp_chr_new_client(chr, sioc);
3136
3137 object_unref(OBJECT(sioc));
2ea5a7af
AL		 3138
3139 return TRUE;
6f97dba0
AL		 3140}
3141
6b6723c3
MAL		 3142int qemu_chr_wait_connected(CharDriverState *chr, Error **errp)
3143{
3144 if (chr->chr_wait_connected) {
3145 return chr->chr_wait_connected(chr, errp);
3146 }
3147
3148 return 0;
3149}
3150
6f97dba0
AL		 3151static void tcp_chr_close(CharDriverState *chr)
3152{
3153 TCPCharDriver *s = chr->opaque;
c76bf6bb 3154 int i;
cfb429cb 3155
5dd1f02b
CM		 3156 if (s->reconnect_timer) {
3157 g_source_remove(s->reconnect_timer);
3158 s->reconnect_timer = 0;
3159 }
cfb429cb 3160 qapi_free_SocketAddress(s->addr);
9894dc0c
DB		 3161 remove_fd_in_watch(chr);
3162 if (s->ioc) {
3163 object_unref(OBJECT(s->ioc));
819f56b7 3164 }
9894dc0c
DB		 3165 if (s->listen_tag) {
3166 g_source_remove(s->listen_tag);
3167 s->listen_tag = 0;
3168 }
3169 if (s->listen_ioc) {
3170 object_unref(OBJECT(s->listen_ioc));
819f56b7 3171 }
c76bf6bb
NN		 3172 if (s->read_msgfds_num) {
3173 for (i = 0; i < s->read_msgfds_num; i++) {
3174 close(s->read_msgfds[i]);
3175 }
3176 g_free(s->read_msgfds);
3177 }
a8fb5427
DB		 3178 if (s->tls_creds) {
3179 object_unref(OBJECT(s->tls_creds));
3180 }
d39aac7a
NN		 3181 if (s->write_msgfds_num) {
3182 g_free(s->write_msgfds);
3183 }
7267c094 3184 g_free(s);
a425d23f 3185 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 3186}
3187
43ded1a0 3188
9894dc0c 3189static void qemu_chr_socket_connected(Object *src, Error *err, void *opaque)
5dd1f02b 3190{
9894dc0c 3191 QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(src);
5dd1f02b 3192 CharDriverState *chr = opaque;
5008e5b7 3193 TCPCharDriver *s = chr->opaque;
5dd1f02b 3194
9894dc0c 3195 if (err) {
5008e5b7 3196 check_report_connect_error(chr, err);
9894dc0c 3197 object_unref(src);
5dd1f02b
CM		 3198 return;
3199 }
3200
5008e5b7 3201 s->connect_err_reported = false;
f50dfe45
DB		 3202 tcp_chr_new_client(chr, sioc);
3203 object_unref(OBJECT(sioc));
5dd1f02b
CM		 3204}
3205
f6bd5d6e 3206
51767e7c 3207/*********************************************************/
3949e594 3208/* Ring buffer chardev */
51767e7c
LL		 3209
3210typedef struct {
3211 size_t size;
3212 size_t prod;
3213 size_t cons;
3214 uint8_t *cbuf;
3949e594 3215} RingBufCharDriver;
51767e7c 3216
3949e594 3217static size_t ringbuf_count(const CharDriverState *chr)
51767e7c 3218{
3949e594 3219 const RingBufCharDriver *d = chr->opaque;
51767e7c 3220
5c230105 3221 return d->prod - d->cons;
51767e7c
LL		 3222}
3223
9005b2a7 3224/* Called with chr_write_lock held. */
3949e594 3225static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
51767e7c 3226{
3949e594 3227 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3228 int i;
3229
3230 if (!buf || (len < 0)) {
3231 return -1;
3232 }
3233
3234 for (i = 0; i < len; i++ ) {
5c230105
MA		 3235 d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
3236 if (d->prod - d->cons > d->size) {
51767e7c
LL		 3237 d->cons = d->prod - d->size;
3238 }
3239 }
3240
3241 return 0;
3242}
3243
3949e594 3244static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len)
51767e7c 3245{
3949e594 3246 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3247 int i;
3248
9005b2a7 3249 qemu_mutex_lock(&chr->chr_write_lock);
5c230105
MA		 3250 for (i = 0; i < len && d->cons != d->prod; i++) {
3251 buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
51767e7c 3252 }
9005b2a7 3253 qemu_mutex_unlock(&chr->chr_write_lock);
51767e7c
LL		 3254
3255 return i;
3256}
3257
3949e594 3258static void ringbuf_chr_close(struct CharDriverState *chr)
51767e7c 3259{
3949e594 3260 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3261
3262 g_free(d->cbuf);
3263 g_free(d);
3264 chr->opaque = NULL;
3265}
3266
479f09a1
PB		 3267static CharDriverState *qemu_chr_open_ringbuf(const char *id,
3268 ChardevBackend *backend,
3269 ChardevReturn *ret,
4f57378f 3270 Error **errp)
51767e7c 3271{
32bafa8f 3272 ChardevRingbuf *opts = backend->u.ringbuf.data;
f194a1ae 3273 ChardevCommon *common = qapi_ChardevRingbuf_base(opts);
51767e7c 3274 CharDriverState *chr;
3949e594 3275 RingBufCharDriver *d;
51767e7c 3276
d0d7708b
DB		 3277 chr = qemu_chr_alloc(common, errp);
3278 if (!chr) {
3279 return NULL;
3280 }
51767e7c
LL		 3281 d = g_malloc(sizeof(*d));
3282
1da48c65 3283 d->size = opts->has_size ? opts->size : 65536;
51767e7c
LL		 3284
3285 /* The size must be power of 2 */
3286 if (d->size & (d->size - 1)) {
4f57378f 3287 error_setg(errp, "size of ringbuf chardev must be power of two");
51767e7c
LL		 3288 goto fail;
3289 }
3290
3291 d->prod = 0;
3292 d->cons = 0;
3293 d->cbuf = g_malloc0(d->size);
3294
3295 chr->opaque = d;
3949e594
MA		 3296 chr->chr_write = ringbuf_chr_write;
3297 chr->chr_close = ringbuf_chr_close;
51767e7c
LL		 3298
3299 return chr;
3300
3301fail:
3302 g_free(d);
d0d7708b 3303 qemu_chr_free_common(chr);
51767e7c
LL		 3304 return NULL;
3305}
3306
8e597779 3307bool chr_is_ringbuf(const CharDriverState *chr)
1f590cf9 3308{
3949e594 3309 return chr->chr_write == ringbuf_chr_write;
1f590cf9
LL		 3310}
3311
3949e594 3312void qmp_ringbuf_write(const char *device, const char *data,
82e59a67 3313 bool has_format, enum DataFormat format,
1f590cf9
LL		 3314 Error **errp)
3315{
3316 CharDriverState *chr;
c4f331b6 3317 const uint8_t *write_data;
1f590cf9 3318 int ret;
3d1bba20 3319 gsize write_count;
1f590cf9
LL		 3320
3321 chr = qemu_chr_find(device);
3322 if (!chr) {
1a69278e 3323 error_setg(errp, "Device '%s' not found", device);
1f590cf9
LL		 3324 return;
3325 }
3326
3949e594
MA		 3327 if (!chr_is_ringbuf(chr)) {
3328 error_setg(errp,"%s is not a ringbuf device", device);
1f590cf9
LL		 3329 return;
3330 }
3331
1f590cf9 3332 if (has_format && (format == DATA_FORMAT_BASE64)) {
e9cf2fe0
DB		 3333 write_data = qbase64_decode(data, -1,
3334 &write_count,
3335 errp);
3336 if (!write_data) {
3337 return;
3338 }
1f590cf9
LL		 3339 } else {
3340 write_data = (uint8_t *)data;
82e59a67 3341 write_count = strlen(data);
1f590cf9
LL		 3342 }
3343
3949e594 3344 ret = ringbuf_chr_write(chr, write_data, write_count);
1f590cf9 3345
13289fb5
MA		 3346 if (write_data != (uint8_t *)data) {
3347 g_free((void *)write_data);
3348 }
3349
1f590cf9
LL		 3350 if (ret < 0) {
3351 error_setg(errp, "Failed to write to device %s", device);
3352 return;
3353 }
3354}
3355
3949e594 3356char *qmp_ringbuf_read(const char *device, int64_t size,
3ab651fc
MA		 3357 bool has_format, enum DataFormat format,
3358 Error **errp)
49b6d722
LL		 3359{
3360 CharDriverState *chr;
c4f331b6 3361 uint8_t *read_data;
49b6d722 3362 size_t count;
3ab651fc 3363 char *data;
49b6d722
LL		 3364
3365 chr = qemu_chr_find(device);
3366 if (!chr) {
1a69278e 3367 error_setg(errp, "Device '%s' not found", device);
49b6d722
LL		 3368 return NULL;
3369 }
3370
3949e594
MA		 3371 if (!chr_is_ringbuf(chr)) {
3372 error_setg(errp,"%s is not a ringbuf device", device);
49b6d722
LL		 3373 return NULL;
3374 }
3375
3376 if (size <= 0) {
3377 error_setg(errp, "size must be greater than zero");
3378 return NULL;
3379 }
3380
3949e594 3381 count = ringbuf_count(chr);
49b6d722 3382 size = size > count ? count : size;
44f3bcd2 3383 read_data = g_malloc(size + 1);
49b6d722 3384
3949e594 3385 ringbuf_chr_read(chr, read_data, size);
49b6d722
LL		 3386
3387 if (has_format && (format == DATA_FORMAT_BASE64)) {
3ab651fc 3388 data = g_base64_encode(read_data, size);
13289fb5 3389 g_free(read_data);
49b6d722 3390 } else {
3949e594
MA		 3391 /*
3392 * FIXME should read only complete, valid UTF-8 characters up
3393 * to @size bytes. Invalid sequences should be replaced by a
3394 * suitable replacement character. Except when (and only
3395 * when) ring buffer lost characters since last read, initial
3396 * continuation characters should be dropped.
3397 */
44f3bcd2 3398 read_data[size] = 0;
3ab651fc 3399 data = (char *)read_data;
49b6d722
LL		 3400 }
3401
3ab651fc 3402 return data;
49b6d722
LL		 3403}
3404
33521634 3405QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
191bc01b 3406{
6ea314d9 3407 char host[65], port[33], width[8], height[8];
aeb2c47a 3408 int pos;
7d31544f 3409 const char *p;
191bc01b 3410 QemuOpts *opts;
8be7e7e4 3411 Error *local_err = NULL;
191bc01b 3412
8be7e7e4 3413 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
84d18f06 3414 if (local_err) {
33394884 3415 error_report_err(local_err);
191bc01b 3416 return NULL;
8be7e7e4 3417 }
191bc01b 3418
7591c5c1
GH		 3419 if (strstart(filename, "mon:", &p)) {
3420 filename = p;
f43e47db 3421 qemu_opt_set(opts, "mux", "on", &error_abort);
02c4bdf1
PB		 3422 if (strcmp(filename, "stdio") == 0) {
3423 /* Monitor is muxed to stdio: do not exit on Ctrl+C by default
3424 * but pass it to the guest. Handle this only for compat syntax,
3425 * for -chardev syntax we have special option for this.
3426 * This is what -nographic did, redirecting+muxing serial+monitor
3427 * to stdio causing Ctrl+C to be passed to guest. */
f43e47db 3428 qemu_opt_set(opts, "signal", "off", &error_abort);
02c4bdf1 3429 }
7591c5c1
GH		 3430 }
3431
f0457e8d
GH		 3432 if (strcmp(filename, "null") == 0 ||
3433 strcmp(filename, "pty") == 0 ||
3434 strcmp(filename, "msmouse") == 0 ||
dc1c21e6 3435 strcmp(filename, "braille") == 0 ||
5692399f 3436 strcmp(filename, "testdev") == 0 ||
f0457e8d 3437 strcmp(filename, "stdio") == 0) {
f43e47db 3438 qemu_opt_set(opts, "backend", filename, &error_abort);
191bc01b
GH		 3439 return opts;
3440 }
6ea314d9 3441 if (strstart(filename, "vc", &p)) {
f43e47db 3442 qemu_opt_set(opts, "backend", "vc", &error_abort);
6ea314d9 3443 if (*p == ':') {
49aa4058 3444 if (sscanf(p+1, "%7[0-9]x%7[0-9]", width, height) == 2) {
6ea314d9 3445 /* pixels */
f43e47db
MA		 3446 qemu_opt_set(opts, "width", width, &error_abort);
3447 qemu_opt_set(opts, "height", height, &error_abort);
49aa4058 3448 } else if (sscanf(p+1, "%7[0-9]Cx%7[0-9]C", width, height) == 2) {
6ea314d9 3449 /* chars */
f43e47db
MA		 3450 qemu_opt_set(opts, "cols", width, &error_abort);
3451 qemu_opt_set(opts, "rows", height, &error_abort);
6ea314d9
GH		 3452 } else {
3453 goto fail;
3454 }
3455 }
3456 return opts;
3457 }
d6c983cd 3458 if (strcmp(filename, "con:") == 0) {
f43e47db 3459 qemu_opt_set(opts, "backend", "console", &error_abort);
d6c983cd
GH		 3460 return opts;
3461 }
48b76496 3462 if (strstart(filename, "COM", NULL)) {
f43e47db
MA		 3463 qemu_opt_set(opts, "backend", "serial", &error_abort);
3464 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3465 return opts;
3466 }
7d31544f 3467 if (strstart(filename, "file:", &p)) {
f43e47db
MA		 3468 qemu_opt_set(opts, "backend", "file", &error_abort);
3469 qemu_opt_set(opts, "path", p, &error_abort);
7d31544f
GH		 3470 return opts;
3471 }
3472 if (strstart(filename, "pipe:", &p)) {
f43e47db
MA		 3473 qemu_opt_set(opts, "backend", "pipe", &error_abort);
3474 qemu_opt_set(opts, "path", p, &error_abort);
7d31544f
GH		 3475 return opts;
3476 }
aeb2c47a
GH		 3477 if (strstart(filename, "tcp:", &p) ||
3478 strstart(filename, "telnet:", &p)) {
3479 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3480 host[0] = 0;
3481 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
3482 goto fail;
3483 }
f43e47db
MA		 3484 qemu_opt_set(opts, "backend", "socket", &error_abort);
3485 qemu_opt_set(opts, "host", host, &error_abort);
3486 qemu_opt_set(opts, "port", port, &error_abort);
aeb2c47a 3487 if (p[pos] == ',') {
dc523cd3
MA		 3488 qemu_opts_do_parse(opts, p+pos+1, NULL, &local_err);
3489 if (local_err) {
3490 error_report_err(local_err);
aeb2c47a 3491 goto fail;
dc523cd3 3492 }
aeb2c47a
GH		 3493 }
3494 if (strstart(filename, "telnet:", &p))
f43e47db 3495 qemu_opt_set(opts, "telnet", "on", &error_abort);
aeb2c47a
GH		 3496 return opts;
3497 }
7e1b35b4 3498 if (strstart(filename, "udp:", &p)) {
f43e47db 3499 qemu_opt_set(opts, "backend", "udp", &error_abort);
7e1b35b4
GH		 3500 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
3501 host[0] = 0;
39324ca4 3502 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
7e1b35b4
GH		 3503 goto fail;
3504 }
3505 }
f43e47db
MA		 3506 qemu_opt_set(opts, "host", host, &error_abort);
3507 qemu_opt_set(opts, "port", port, &error_abort);
7e1b35b4
GH		 3508 if (p[pos] == '@') {
3509 p += pos + 1;
3510 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3511 host[0] = 0;
3512 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
7e1b35b4
GH		 3513 goto fail;
3514 }
3515 }
f43e47db
MA		 3516 qemu_opt_set(opts, "localaddr", host, &error_abort);
3517 qemu_opt_set(opts, "localport", port, &error_abort);
7e1b35b4
GH		 3518 }
3519 return opts;
3520 }
aeb2c47a 3521 if (strstart(filename, "unix:", &p)) {
f43e47db 3522 qemu_opt_set(opts, "backend", "socket", &error_abort);
dc523cd3
MA		 3523 qemu_opts_do_parse(opts, p, "path", &local_err);
3524 if (local_err) {
3525 error_report_err(local_err);
aeb2c47a 3526 goto fail;
dc523cd3 3527 }
aeb2c47a
GH		 3528 return opts;
3529 }
48b76496
GH		 3530 if (strstart(filename, "/dev/parport", NULL) ||
3531 strstart(filename, "/dev/ppi", NULL)) {
f43e47db
MA		 3532 qemu_opt_set(opts, "backend", "parport", &error_abort);
3533 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3534 return opts;
3535 }
3536 if (strstart(filename, "/dev/", NULL)) {
f43e47db
MA		 3537 qemu_opt_set(opts, "backend", "tty", &error_abort);
3538 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3539 return opts;
3540 }
191bc01b 3541
aeb2c47a 3542fail:
191bc01b
GH		 3543 qemu_opts_del(opts);
3544 return NULL;
3545}
3546
21a933ea 3547void qemu_chr_parse_common(QemuOpts *opts, ChardevCommon *backend)
d0d7708b
DB		 3548{
3549 const char *logfile = qemu_opt_get(opts, "logfile");
3550
3551 backend->has_logfile = logfile != NULL;
3552 backend->logfile = logfile ? g_strdup(logfile) : NULL;
3553
3554 backend->has_logappend = true;
3555 backend->logappend = qemu_opt_get_bool(opts, "logappend", false);
3556}
3557
3558
846e2e49
GH		 3559static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
3560 Error **errp)
3561{
3562 const char *path = qemu_opt_get(opts, "path");
f194a1ae 3563 ChardevFile *file;
846e2e49
GH		 3564
3565 if (path == NULL) {
3566 error_setg(errp, "chardev: file: no filename given");
3567 return;
3568 }
32bafa8f 3569 file = backend->u.file.data = g_new0(ChardevFile, 1);
f194a1ae
EB		 3570 qemu_chr_parse_common(opts, qapi_ChardevFile_base(file));
3571 file->out = g_strdup(path);
31e38a22 3572
f194a1ae
EB		 3573 file->has_append = true;
3574 file->append = qemu_opt_get_bool(opts, "append", false);
846e2e49
GH		 3575}
3576
7c358031
GH		 3577static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
3578 Error **errp)
3579{
f194a1ae
EB		 3580 ChardevStdio *stdio;
3581
32bafa8f 3582 stdio = backend->u.stdio.data = g_new0(ChardevStdio, 1);
f194a1ae
EB		 3583 qemu_chr_parse_common(opts, qapi_ChardevStdio_base(stdio));
3584 stdio->has_signal = true;
3585 stdio->signal = qemu_opt_get_bool(opts, "signal", true);
7c358031
GH		 3586}
3587
6511d396 3588#ifdef HAVE_CHARDEV_SERIAL
0f1cb51d
GH		 3589static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
3590 Error **errp)
3591{
3592 const char *device = qemu_opt_get(opts, "path");
f194a1ae 3593 ChardevHostdev *serial;
0f1cb51d
GH		 3594
3595 if (device == NULL) {
3596 error_setg(errp, "chardev: serial/tty: no device path given");
3597 return;
3598 }
32bafa8f 3599 serial = backend->u.serial.data = g_new0(ChardevHostdev, 1);
f194a1ae
EB		 3600 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(serial));
3601 serial->device = g_strdup(device);
0f1cb51d 3602}
6511d396 3603#endif
0f1cb51d 3604
38bfb1a6 3605#ifdef HAVE_CHARDEV_PARPORT
dc375097
GH		 3606static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
3607 Error **errp)
3608{
3609 const char *device = qemu_opt_get(opts, "path");
f194a1ae 3610 ChardevHostdev *parallel;
dc375097
GH		 3611
3612 if (device == NULL) {
3613 error_setg(errp, "chardev: parallel: no device path given");
3614 return;
3615 }
32bafa8f 3616 parallel = backend->u.parallel.data = g_new0(ChardevHostdev, 1);
f194a1ae
EB		 3617 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(parallel));
3618 parallel->device = g_strdup(device);
dc375097 3619}
38bfb1a6 3620#endif
dc375097 3621
548cbb36
GH		 3622static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
3623 Error **errp)
3624{
3625 const char *device = qemu_opt_get(opts, "path");
f194a1ae 3626 ChardevHostdev *dev;
548cbb36
GH		 3627
3628 if (device == NULL) {
3629 error_setg(errp, "chardev: pipe: no device path given");
3630 return;
3631 }
32bafa8f 3632 dev = backend->u.pipe.data = g_new0(ChardevHostdev, 1);
f194a1ae
EB		 3633 qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(dev));
3634 dev->device = g_strdup(device);
548cbb36
GH		 3635}
3636
4f57378f
MA		 3637static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
3638 Error **errp)
1da48c65
GH		 3639{
3640 int val;
f194a1ae 3641 ChardevRingbuf *ringbuf;
1da48c65 3642
32bafa8f 3643 ringbuf = backend->u.ringbuf.data = g_new0(ChardevRingbuf, 1);
f194a1ae 3644 qemu_chr_parse_common(opts, qapi_ChardevRingbuf_base(ringbuf));
1da48c65 3645
0f953051 3646 val = qemu_opt_get_size(opts, "size", 0);
1da48c65 3647 if (val != 0) {
f194a1ae
EB		 3648 ringbuf->has_size = true;
3649 ringbuf->size = val;
1da48c65
GH		 3650 }
3651}
3652
bb6fb7c0
GH		 3653static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend,
3654 Error **errp)
3655{
3656 const char *chardev = qemu_opt_get(opts, "chardev");
f194a1ae 3657 ChardevMux *mux;
bb6fb7c0
GH		 3658
3659 if (chardev == NULL) {
3660 error_setg(errp, "chardev: mux: no chardev given");
3661 return;
3662 }
32bafa8f 3663 mux = backend->u.mux.data = g_new0(ChardevMux, 1);
f194a1ae
EB		 3664 qemu_chr_parse_common(opts, qapi_ChardevMux_base(mux));
3665 mux->chardev = g_strdup(chardev);
bb6fb7c0
GH		 3666}
3667
dafd325d
PM		 3668static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend,
3669 Error **errp)
3670{
3671 bool is_listen = qemu_opt_get_bool(opts, "server", false);
3672 bool is_waitconnect = is_listen && qemu_opt_get_bool(opts, "wait", true);
3673 bool is_telnet = qemu_opt_get_bool(opts, "telnet", false);
3674 bool do_nodelay = !qemu_opt_get_bool(opts, "delay", true);
5dd1f02b 3675 int64_t reconnect = qemu_opt_get_number(opts, "reconnect", 0);
dafd325d
PM		 3676 const char *path = qemu_opt_get(opts, "path");
3677 const char *host = qemu_opt_get(opts, "host");
3678 const char *port = qemu_opt_get(opts, "port");
a8fb5427 3679 const char *tls_creds = qemu_opt_get(opts, "tls-creds");
dafd325d 3680 SocketAddress *addr;
f194a1ae 3681 ChardevSocket *sock;
dafd325d
PM		 3682
3683 if (!path) {
3684 if (!host) {
3685 error_setg(errp, "chardev: socket: no host given");
3686 return;
3687 }
3688 if (!port) {
3689 error_setg(errp, "chardev: socket: no port given");
3690 return;
3691 }
a8fb5427
DB		 3692 } else {
3693 if (tls_creds) {
3694 error_setg(errp, "TLS can only be used over TCP socket");
3695 return;
3696 }
dafd325d
PM		 3697 }
3698
32bafa8f 3699 sock = backend->u.socket.data = g_new0(ChardevSocket, 1);
f194a1ae 3700 qemu_chr_parse_common(opts, qapi_ChardevSocket_base(sock));
dafd325d 3701
f194a1ae
EB		 3702 sock->has_nodelay = true;
3703 sock->nodelay = do_nodelay;
3704 sock->has_server = true;
3705 sock->server = is_listen;
3706 sock->has_telnet = true;
3707 sock->telnet = is_telnet;
3708 sock->has_wait = true;
3709 sock->wait = is_waitconnect;
3710 sock->has_reconnect = true;
3711 sock->reconnect = reconnect;
3712 sock->tls_creds = g_strdup(tls_creds);
dafd325d
PM		 3713
3714 addr = g_new0(SocketAddress, 1);
3715 if (path) {
0399293e 3716 UnixSocketAddress *q_unix;
130257dc 3717 addr->type = SOCKET_ADDRESS_KIND_UNIX;
32bafa8f 3718 q_unix = addr->u.q_unix.data = g_new0(UnixSocketAddress, 1);
0399293e 3719 q_unix->path = g_strdup(path);
dafd325d 3720 } else {
130257dc 3721 addr->type = SOCKET_ADDRESS_KIND_INET;
32bafa8f
EB		 3722 addr->u.inet.data = g_new(InetSocketAddress, 1);
3723 *addr->u.inet.data = (InetSocketAddress) {
0399293e
EB		 3724 .host = g_strdup(host),
3725 .port = g_strdup(port),
3726 .has_to = qemu_opt_get(opts, "to"),
3727 .to = qemu_opt_get_number(opts, "to", 0),
3728 .has_ipv4 = qemu_opt_get(opts, "ipv4"),
3729 .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0),
3730 .has_ipv6 = qemu_opt_get(opts, "ipv6"),
3731 .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0),
3732 };
dafd325d 3733 }
f194a1ae 3734 sock->addr = addr;
dafd325d
PM		 3735}
3736
90a14bfe
PM		 3737static void qemu_chr_parse_udp(QemuOpts *opts, ChardevBackend *backend,
3738 Error **errp)
3739{
3740 const char *host = qemu_opt_get(opts, "host");
3741 const char *port = qemu_opt_get(opts, "port");
3742 const char *localaddr = qemu_opt_get(opts, "localaddr");
3743 const char *localport = qemu_opt_get(opts, "localport");
3744 bool has_local = false;
3745 SocketAddress *addr;
f194a1ae 3746 ChardevUdp *udp;
90a14bfe
PM		 3747
3748 if (host == NULL || strlen(host) == 0) {
3749 host = "localhost";
3750 }
3751 if (port == NULL || strlen(port) == 0) {
3752 error_setg(errp, "chardev: udp: remote port not specified");
3753 return;
3754 }
3755 if (localport == NULL || strlen(localport) == 0) {
3756 localport = "0";
3757 } else {
3758 has_local = true;
3759 }
3760 if (localaddr == NULL || strlen(localaddr) == 0) {
3761 localaddr = "";
3762 } else {
3763 has_local = true;
3764 }
3765
32bafa8f 3766 udp = backend->u.udp.data = g_new0(ChardevUdp, 1);
f194a1ae 3767 qemu_chr_parse_common(opts, qapi_ChardevUdp_base(udp));
90a14bfe
PM		 3768
3769 addr = g_new0(SocketAddress, 1);
130257dc 3770 addr->type = SOCKET_ADDRESS_KIND_INET;
32bafa8f
EB		 3771 addr->u.inet.data = g_new(InetSocketAddress, 1);
3772 *addr->u.inet.data = (InetSocketAddress) {
0399293e
EB		 3773 .host = g_strdup(host),
3774 .port = g_strdup(port),
3775 .has_ipv4 = qemu_opt_get(opts, "ipv4"),
3776 .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0),
3777 .has_ipv6 = qemu_opt_get(opts, "ipv6"),
3778 .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0),
3779 };
f194a1ae 3780 udp->remote = addr;
90a14bfe
PM		 3781
3782 if (has_local) {
f194a1ae 3783 udp->has_local = true;
90a14bfe 3784 addr = g_new0(SocketAddress, 1);
130257dc 3785 addr->type = SOCKET_ADDRESS_KIND_INET;
32bafa8f
EB		 3786 addr->u.inet.data = g_new(InetSocketAddress, 1);
3787 *addr->u.inet.data = (InetSocketAddress) {
0399293e
EB		 3788 .host = g_strdup(localaddr),
3789 .port = g_strdup(localport),
3790 };
f194a1ae 3791 udp->local = addr;
90a14bfe
PM		 3792 }
3793}
3794
d654f34e 3795typedef struct CharDriver {
191bc01b 3796 const char *name;
99aec012 3797 ChardevBackendKind kind;
2c5f4882 3798 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
4ca17281
PB		 3799 CharDriverState *(*create)(const char *id, ChardevBackend *backend,
3800 ChardevReturn *ret, Error **errp);
d654f34e
AL		 3801} CharDriver;
3802
3803static GSList *backends;
3804
e4d50d47 3805void register_char_driver(const char *name, ChardevBackendKind kind,
4ca17281
PB		 3806 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp),
3807 CharDriverState *(*create)(const char *id, ChardevBackend *backend,
3808 ChardevReturn *ret, Error **errp))
2c5f4882
GH		 3809{
3810 CharDriver *s;
3811
3812 s = g_malloc0(sizeof(*s));
3813 s->name = g_strdup(name);
3814 s->kind = kind;
3815 s->parse = parse;
4ca17281 3816 s->create = create;
2c5f4882
GH		 3817
3818 backends = g_slist_append(backends, s);
3819}
3820
f69554b9 3821CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
bd2d80b2
GH		 3822 void (*init)(struct CharDriverState *s),
3823 Error **errp)
191bc01b 3824{
0aff637e 3825 Error *local_err = NULL;
d654f34e 3826 CharDriver *cd;
191bc01b 3827 CharDriverState *chr;
d654f34e 3828 GSList *i;
a61ae7f8
PM		 3829 ChardevReturn *ret = NULL;
3830 ChardevBackend *backend;
3831 const char *id = qemu_opts_id(opts);
3832 char *bid = NULL;
191bc01b 3833
a61ae7f8 3834 if (id == NULL) {
312fd5f2 3835 error_setg(errp, "chardev: no id specified");
2274ae9d 3836 goto err;
191bc01b
GH		 3837 }
3838
1bbd185f 3839 if (qemu_opt_get(opts, "backend") == NULL) {
312fd5f2 3840 error_setg(errp, "chardev: \"%s\" missing backend",
bd2d80b2 3841 qemu_opts_id(opts));
2274ae9d 3842 goto err;
1bbd185f 3843 }
d654f34e
AL		 3844 for (i = backends; i; i = i->next) {
3845 cd = i->data;
3846
3847 if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) {
191bc01b 3848 break;
d654f34e 3849 }
191bc01b 3850 }
d654f34e 3851 if (i == NULL) {
312fd5f2 3852 error_setg(errp, "chardev: backend \"%s\" not found",
bd2d80b2 3853 qemu_opt_get(opts, "backend"));
e668287d 3854 goto err;
191bc01b
GH		 3855 }
3856
a61ae7f8 3857 backend = g_new0(ChardevBackend, 1);
edb2fb3c 3858
a61ae7f8
PM		 3859 if (qemu_opt_get_bool(opts, "mux", 0)) {
3860 bid = g_strdup_printf("%s-base", id);
3861 }
2c5f4882 3862
a61ae7f8 3863 chr = NULL;
130257dc 3864 backend->type = cd->kind;
a61ae7f8
PM		 3865 if (cd->parse) {
3866 cd->parse(opts, backend, &local_err);
3867 if (local_err) {
3868 error_propagate(errp, local_err);
2c5f4882
GH		 3869 goto qapi_out;
3870 }
d0d7708b
DB		 3871 } else {
3872 ChardevCommon *cc = g_new0(ChardevCommon, 1);
3873 qemu_chr_parse_common(opts, cc);
32bafa8f 3874 backend->u.null.data = cc; /* Any ChardevCommon member would work */
2c5f4882 3875 }
d0d7708b 3876
a61ae7f8
PM		 3877 ret = qmp_chardev_add(bid ? bid : id, backend, errp);
3878 if (!ret) {
3879 goto qapi_out;
191bc01b
GH		 3880 }
3881
a61ae7f8
PM		 3882 if (bid) {
3883 qapi_free_ChardevBackend(backend);
3884 qapi_free_ChardevReturn(ret);
3885 backend = g_new0(ChardevBackend, 1);
32bafa8f 3886 backend->u.mux.data = g_new0(ChardevMux, 1);
130257dc 3887 backend->type = CHARDEV_BACKEND_KIND_MUX;
32bafa8f 3888 backend->u.mux.data->chardev = g_strdup(bid);
a61ae7f8
PM		 3889 ret = qmp_chardev_add(id, backend, errp);
3890 if (!ret) {
3891 chr = qemu_chr_find(bid);
3892 qemu_chr_delete(chr);
3893 chr = NULL;
3894 goto qapi_out;
3895 }
bd5c51ee 3896 }
7591c5c1 3897
a61ae7f8 3898 chr = qemu_chr_find(id);
2274ae9d 3899 chr->opts = opts;
a61ae7f8
PM		 3900
3901qapi_out:
3902 qapi_free_ChardevBackend(backend);
3903 qapi_free_ChardevReturn(ret);
3904 g_free(bid);
191bc01b 3905 return chr;
2274ae9d
GH		 3906
3907err:
3908 qemu_opts_del(opts);
3909 return NULL;
191bc01b
GH		 3910}
3911
33577b47
PD		 3912CharDriverState *qemu_chr_new_noreplay(const char *label, const char *filename,
3913 void (*init)(struct CharDriverState *s))
6f97dba0
AL		 3914{
3915 const char *p;
3916 CharDriverState *chr;
191bc01b 3917 QemuOpts *opts;
bd2d80b2 3918 Error *err = NULL;
191bc01b 3919
c845f401
GH		 3920 if (strstart(filename, "chardev:", &p)) {
3921 return qemu_chr_find(p);
3922 }
3923
191bc01b 3924 opts = qemu_chr_parse_compat(label, filename);
7e1b35b4
GH		 3925 if (!opts)
3926 return NULL;
6f97dba0 3927
bd2d80b2 3928 chr = qemu_chr_new_from_opts(opts, init, &err);
84d18f06 3929 if (err) {
565f65d2 3930 error_report_err(err);
bd2d80b2 3931 }
7e1b35b4 3932 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
456d6069 3933 qemu_chr_fe_claim_no_fail(chr);
7e1b35b4 3934 monitor_init(chr, MONITOR_USE_READLINE);
6f97dba0
AL		 3935 }
3936 return chr;
3937}
3938
33577b47
PD		 3939CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
3940{
3941 CharDriverState *chr;
3942 chr = qemu_chr_new_noreplay(label, filename, init);
3943 if (chr) {
3944 chr->replay = replay_mode != REPLAY_MODE_NONE;
3945 if (chr->replay && chr->chr_ioctl) {
3946 fprintf(stderr,
3947 "Replay: ioctl is not supported for serial devices yet\n");
3948 }
3949 replay_register_char_driver(chr);
3950 }
3951 return chr;
3952}
3953
15f31519 3954void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo)
c48855e1
PB		 3955{
3956 if (chr->chr_set_echo) {
3957 chr->chr_set_echo(chr, echo);
3958 }
3959}
3960
8e25daa8 3961void qemu_chr_fe_set_open(struct CharDriverState *chr, int fe_open)
7c32c4fe 3962{
8e25daa8 3963 if (chr->fe_open == fe_open) {
c0c4bd2c
HG		 3964 return;
3965 }
8e25daa8 3966 chr->fe_open = fe_open;
574b711a
HG		 3967 if (chr->chr_set_fe_open) {
3968 chr->chr_set_fe_open(chr, fe_open);
7c32c4fe
HG		 3969 }
3970}
3971
d61b0c9a
MAL		 3972void qemu_chr_fe_event(struct CharDriverState *chr, int event)
3973{
3974 if (chr->chr_fe_event) {
3975 chr->chr_fe_event(chr, event);
3976 }
3977}
3978
6f1de6b7
PB		 3979guint qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond,
3980 GIOFunc func, void *user_data)
23673ca7
AL		 3981{
3982 GSource *src;
3983 guint tag;
3984
3985 if (s->chr_add_watch == NULL) {
6f1de6b7 3986 return 0;
23673ca7
AL		 3987 }
3988
3989 src = s->chr_add_watch(s, cond);
62c339c5 3990 if (!src) {
6f1de6b7 3991 return 0;
62c339c5
PB		 3992 }
3993
23673ca7
AL		 3994 g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
3995 tag = g_source_attach(src, NULL);
3996 g_source_unref(src);
3997
3998 return tag;
3999}
4000
44c473de
HG		 4001int qemu_chr_fe_claim(CharDriverState *s)
4002{
4003 if (s->avail_connections < 1) {
4004 return -1;
4005 }
4006 s->avail_connections--;
4007 return 0;
4008}
4009
4010void qemu_chr_fe_claim_no_fail(CharDriverState *s)
4011{
4012 if (qemu_chr_fe_claim(s) != 0) {
4013 fprintf(stderr, "%s: error chardev \"%s\" already used\n",
4014 __func__, s->label);
4015 exit(1);
4016 }
4017}
4018
4019void qemu_chr_fe_release(CharDriverState *s)
4020{
4021 s->avail_connections++;
4022}
4023
7d9d17f7
TM		 4024void qemu_chr_disconnect(CharDriverState *chr)
4025{
4026 if (chr->chr_disconnect) {
4027 chr->chr_disconnect(chr);
4028 }
4029}
4030
d0d7708b 4031static void qemu_chr_free_common(CharDriverState *chr)
6f97dba0 4032{
7267c094
AL		 4033 g_free(chr->filename);
4034 g_free(chr->label);
4ad60880 4035 qemu_opts_del(chr->opts);
d0d7708b
DB		 4036 if (chr->logfd != -1) {
4037 close(chr->logfd);
4038 }
fefd749c 4039 qemu_mutex_destroy(&chr->chr_write_lock);
7267c094 4040 g_free(chr);
6f97dba0
AL		 4041}
4042
d0d7708b
DB		 4043void qemu_chr_free(CharDriverState *chr)
4044{
4045 if (chr->chr_close) {
4046 chr->chr_close(chr);
4047 }
4048 qemu_chr_free_common(chr);
4049}
4050
1ad78ea5
MAL		 4051void qemu_chr_delete(CharDriverState *chr)
4052{
4053 QTAILQ_REMOVE(&chardevs, chr, next);
4054 qemu_chr_free(chr);
4055}
4056
c5a415a0 4057ChardevInfoList *qmp_query_chardev(Error **errp)
6f97dba0 4058{
c5a415a0 4059 ChardevInfoList *chr_list = NULL;
6f97dba0
AL		 4060 CharDriverState *chr;
4061
72cf2d4f 4062 QTAILQ_FOREACH(chr, &chardevs, next) {
c5a415a0
LC		 4063 ChardevInfoList *info = g_malloc0(sizeof(*info));
4064 info->value = g_malloc0(sizeof(*info->value));
4065 info->value->label = g_strdup(chr->label);
4066 info->value->filename = g_strdup(chr->filename);
32a97ea1 4067 info->value->frontend_open = chr->fe_open;
c5a415a0
LC		 4068
4069 info->next = chr_list;
4070 chr_list = info;
6f97dba0 4071 }
588b3832 4072
c5a415a0 4073 return chr_list;
6f97dba0 4074}
c845f401 4075
77d1c3c6
MK		 4076ChardevBackendInfoList *qmp_query_chardev_backends(Error **errp)
4077{
4078 ChardevBackendInfoList *backend_list = NULL;
4079 CharDriver *c = NULL;
4080 GSList *i = NULL;
4081
4082 for (i = backends; i; i = i->next) {
4083 ChardevBackendInfoList *info = g_malloc0(sizeof(*info));
4084 c = i->data;
4085 info->value = g_malloc0(sizeof(*info->value));
4086 info->value->name = g_strdup(c->name);
4087
4088 info->next = backend_list;
4089 backend_list = info;
4090 }
4091
4092 return backend_list;
4093}
4094
c845f401
GH		 4095CharDriverState *qemu_chr_find(const char *name)
4096{
4097 CharDriverState *chr;
4098
72cf2d4f 4099 QTAILQ_FOREACH(chr, &chardevs, next) {
c845f401
GH		 4100 if (strcmp(chr->label, name) != 0)
4101 continue;
4102 return chr;
4103 }
4104 return NULL;
4105}
0beb4942 4106
4d454574
PB		 4107QemuOptsList qemu_chardev_opts = {
4108 .name = "chardev",
4109 .implied_opt_name = "backend",
4110 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
4111 .desc = {
4112 {
4113 .name = "backend",
4114 .type = QEMU_OPT_STRING,
4115 },{
4116 .name = "path",
4117 .type = QEMU_OPT_STRING,
4118 },{
4119 .name = "host",
4120 .type = QEMU_OPT_STRING,
4121 },{
4122 .name = "port",
4123 .type = QEMU_OPT_STRING,
4124 },{
4125 .name = "localaddr",
4126 .type = QEMU_OPT_STRING,
4127 },{
4128 .name = "localport",
4129 .type = QEMU_OPT_STRING,
4130 },{
4131 .name = "to",
4132 .type = QEMU_OPT_NUMBER,
4133 },{
4134 .name = "ipv4",
4135 .type = QEMU_OPT_BOOL,
4136 },{
4137 .name = "ipv6",
4138 .type = QEMU_OPT_BOOL,
4139 },{
4140 .name = "wait",
4141 .type = QEMU_OPT_BOOL,
4142 },{
4143 .name = "server",
4144 .type = QEMU_OPT_BOOL,
4145 },{
4146 .name = "delay",
4147 .type = QEMU_OPT_BOOL,
5dd1f02b
CM		 4148 },{
4149 .name = "reconnect",
4150 .type = QEMU_OPT_NUMBER,
4d454574
PB		 4151 },{
4152 .name = "telnet",
4153 .type = QEMU_OPT_BOOL,
a8fb5427
DB		 4154 },{
4155 .name = "tls-creds",
4156 .type = QEMU_OPT_STRING,
4d454574
PB		 4157 },{
4158 .name = "width",
4159 .type = QEMU_OPT_NUMBER,
4160 },{
4161 .name = "height",
4162 .type = QEMU_OPT_NUMBER,
4163 },{
4164 .name = "cols",
4165 .type = QEMU_OPT_NUMBER,
4166 },{
4167 .name = "rows",
4168 .type = QEMU_OPT_NUMBER,
4169 },{
4170 .name = "mux",
4171 .type = QEMU_OPT_BOOL,
4172 },{
4173 .name = "signal",
4174 .type = QEMU_OPT_BOOL,
4175 },{
4176 .name = "name",
4177 .type = QEMU_OPT_STRING,
4178 },{
4179 .name = "debug",
4180 .type = QEMU_OPT_NUMBER,
51767e7c 4181 },{
3949e594 4182 .name = "size",
de1cc36e 4183 .type = QEMU_OPT_SIZE,
bb6fb7c0
GH		 4184 },{
4185 .name = "chardev",
4186 .type = QEMU_OPT_STRING,
31e38a22
OK		 4187 },{
4188 .name = "append",
4189 .type = QEMU_OPT_BOOL,
d0d7708b
DB		 4190 },{
4191 .name = "logfile",
4192 .type = QEMU_OPT_STRING,
4193 },{
4194 .name = "logappend",
4195 .type = QEMU_OPT_BOOL,
4d454574
PB		 4196 },
4197 { /* end of list */ }
4198 },
4199};
f1a1a356 4200
ffbdbe59
GH		 4201#ifdef _WIN32
4202
fd5b036c
PB		 4203static CharDriverState *qmp_chardev_open_file(const char *id,
4204 ChardevBackend *backend,
4205 ChardevReturn *ret,
4206 Error **errp)
ffbdbe59 4207{
32bafa8f 4208 ChardevFile *file = backend->u.file.data;
f194a1ae 4209 ChardevCommon *common = qapi_ChardevFile_base(file);
ffbdbe59
GH		 4210 HANDLE out;
4211
e859eda5 4212 if (file->has_in) {
ffbdbe59
GH		 4213 error_setg(errp, "input file not supported");
4214 return NULL;
4215 }
4216
4217 out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
4218 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
4219 if (out == INVALID_HANDLE_VALUE) {
4220 error_setg(errp, "open %s failed", file->out);
4221 return NULL;
4222 }
d0d7708b 4223 return qemu_chr_open_win_file(out, common, errp);
ffbdbe59
GH		 4224}
4225
6511d396
PB		 4226static CharDriverState *qmp_chardev_open_serial(const char *id,
4227 ChardevBackend *backend,
4228 ChardevReturn *ret,
d36b2b90 4229 Error **errp)
d59044ef 4230{
32bafa8f 4231 ChardevHostdev *serial = backend->u.serial.data;
f194a1ae 4232 ChardevCommon *common = qapi_ChardevHostdev_base(serial);
d0d7708b 4233 return qemu_chr_open_win_path(serial->device, common, errp);
d36b2b90
MA		 4234}
4235
ffbdbe59
GH		 4236#else /* WIN32 */
4237
4238static int qmp_chardev_open_file_source(char *src, int flags,
4239 Error **errp)
4240{
4241 int fd = -1;
4242
4243 TFR(fd = qemu_open(src, flags, 0666));
4244 if (fd == -1) {
20c39760 4245 error_setg_file_open(errp, errno, src);
ffbdbe59
GH		 4246 }
4247 return fd;
4248}
4249
fd5b036c
PB		 4250static CharDriverState *qmp_chardev_open_file(const char *id,
4251 ChardevBackend *backend,
4252 ChardevReturn *ret,
4253 Error **errp)
ffbdbe59 4254{
32bafa8f 4255 ChardevFile *file = backend->u.file.data;
f194a1ae 4256 ChardevCommon *common = qapi_ChardevFile_base(file);
5f758366 4257 int flags, in = -1, out;
ffbdbe59 4258
31e38a22
OK		 4259 flags = O_WRONLY | O_CREAT | O_BINARY;
4260 if (file->has_append && file->append) {
4261 flags |= O_APPEND;
4262 } else {
4263 flags |= O_TRUNC;
4264 }
4265
ffbdbe59 4266 out = qmp_chardev_open_file_source(file->out, flags, errp);
5f758366 4267 if (out < 0) {
ffbdbe59
GH		 4268 return NULL;
4269 }
4270
e859eda5 4271 if (file->has_in) {
ffbdbe59
GH		 4272 flags = O_RDONLY;
4273 in = qmp_chardev_open_file_source(file->in, flags, errp);
5f758366 4274 if (in < 0) {
ffbdbe59
GH		 4275 qemu_close(out);
4276 return NULL;
4277 }
4278 }
4279
d0d7708b 4280 return qemu_chr_open_fd(in, out, common, errp);
ffbdbe59
GH		 4281}
4282
d809ab95 4283#ifdef HAVE_CHARDEV_SERIAL
6511d396
PB		 4284static CharDriverState *qmp_chardev_open_serial(const char *id,
4285 ChardevBackend *backend,
4286 ChardevReturn *ret,
d36b2b90 4287 Error **errp)
d59044ef 4288{
32bafa8f 4289 ChardevHostdev *serial = backend->u.serial.data;
f194a1ae 4290 ChardevCommon *common = qapi_ChardevHostdev_base(serial);
d36b2b90
MA		 4291 int fd;
4292
4293 fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
5f758366 4294 if (fd < 0) {
d36b2b90 4295 return NULL;
39099991 4296 }
f9e8cacc 4297 qemu_set_nonblock(fd);
d0d7708b 4298 return qemu_chr_open_tty_fd(fd, common, errp);
d36b2b90 4299}
6511d396 4300#endif
d36b2b90 4301
d809ab95 4302#ifdef HAVE_CHARDEV_PARPORT
38bfb1a6
PB		 4303static CharDriverState *qmp_chardev_open_parallel(const char *id,
4304 ChardevBackend *backend,
4305 ChardevReturn *ret,
d36b2b90
MA		 4306 Error **errp)
4307{
32bafa8f 4308 ChardevHostdev *parallel = backend->u.parallel.data;
f194a1ae 4309 ChardevCommon *common = qapi_ChardevHostdev_base(parallel);
d36b2b90
MA		 4310 int fd;
4311
4312 fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
5f758366 4313 if (fd < 0) {
d59044ef
GH		 4314 return NULL;
4315 }
d0d7708b 4316 return qemu_chr_open_pp_fd(fd, common, errp);
d59044ef 4317}
d809ab95 4318#endif
d59044ef 4319
ffbdbe59
GH		 4320#endif /* WIN32 */
4321
5dd1f02b
CM		 4322static gboolean socket_reconnect_timeout(gpointer opaque)
4323{
4324 CharDriverState *chr = opaque;
4325 TCPCharDriver *s = chr->opaque;
317856ca 4326 QIOChannelSocket *sioc;
5dd1f02b
CM		 4327
4328 s->reconnect_timer = 0;
4329
4330 if (chr->be_open) {
4331 return false;
4332 }
4333
317856ca
DB		 4334 sioc = qio_channel_socket_new();
4335 qio_channel_socket_connect_async(sioc, s->addr,
4336 qemu_chr_socket_connected,
4337 chr, NULL);
5dd1f02b
CM		 4338
4339 return false;
4340}
4341
dbba8d1b
PB		 4342static CharDriverState *qmp_chardev_open_socket(const char *id,
4343 ChardevBackend *backend,
4344 ChardevReturn *ret,
f6bd5d6e
GH		 4345 Error **errp)
4346{
43ded1a0
CM		 4347 CharDriverState *chr;
4348 TCPCharDriver *s;
32bafa8f 4349 ChardevSocket *sock = backend->u.socket.data;
f6bd5d6e
GH		 4350 SocketAddress *addr = sock->addr;
4351 bool do_nodelay = sock->has_nodelay ? sock->nodelay : false;
4352 bool is_listen = sock->has_server ? sock->server : true;
4353 bool is_telnet = sock->has_telnet ? sock->telnet : false;
4354 bool is_waitconnect = sock->has_wait ? sock->wait : false;
5dd1f02b 4355 int64_t reconnect = sock->has_reconnect ? sock->reconnect : 0;
f194a1ae 4356 ChardevCommon *common = qapi_ChardevSocket_base(sock);
317856ca 4357 QIOChannelSocket *sioc = NULL;
43ded1a0 4358
d0d7708b
DB		 4359 chr = qemu_chr_alloc(common, errp);
4360 if (!chr) {
4361 return NULL;
4362 }
2d528d45 4363 s = g_new0(TCPCharDriver, 1);
43ded1a0 4364
130257dc 4365 s->is_unix = addr->type == SOCKET_ADDRESS_KIND_UNIX;
cfb429cb
CM		 4366 s->is_listen = is_listen;
4367 s->is_telnet = is_telnet;
43ded1a0 4368 s->do_nodelay = do_nodelay;
a8fb5427
DB		 4369 if (sock->tls_creds) {
4370 Object *creds;
4371 creds = object_resolve_path_component(
4372 object_get_objects_root(), sock->tls_creds);
4373 if (!creds) {
4374 error_setg(errp, "No TLS credentials with id '%s'",
4375 sock->tls_creds);
4376 goto error;
4377 }
4378 s->tls_creds = (QCryptoTLSCreds *)
4379 object_dynamic_cast(creds,
4380 TYPE_QCRYPTO_TLS_CREDS);
4381 if (!s->tls_creds) {
4382 error_setg(errp, "Object with id '%s' is not TLS credentials",
4383 sock->tls_creds);
4384 goto error;
4385 }
4386 object_ref(OBJECT(s->tls_creds));
4387 if (is_listen) {
4388 if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_SERVER) {
4389 error_setg(errp, "%s",
4390 "Expected TLS credentials for server endpoint");
4391 goto error;
4392 }
4393 } else {
4394 if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT) {
4395 error_setg(errp, "%s",
4396 "Expected TLS credentials for client endpoint");
4397 goto error;
4398 }
4399 }
4400 }
4401
37f9e0a2 4402 s->addr = QAPI_CLONE(SocketAddress, sock->addr);
43ded1a0
CM		 4403
4404 chr->opaque = s;
4405 chr->chr_write = tcp_chr_write;
4406 chr->chr_sync_read = tcp_chr_sync_read;
4407 chr->chr_close = tcp_chr_close;
7d9d17f7 4408 chr->chr_disconnect = tcp_chr_disconnect;
43ded1a0
CM		 4409 chr->get_msgfds = tcp_get_msgfds;
4410 chr->set_msgfds = tcp_set_msgfds;
4411 chr->chr_add_client = tcp_chr_add_client;
4412 chr->chr_add_watch = tcp_chr_add_watch;
4413 chr->chr_update_read_handler = tcp_chr_update_read_handler;
4414 /* be isn't opened until we get a connection */
4415 chr->explicit_be_open = true;
4416
0ff0fad2
DB		 4417 chr->filename = SocketAddress_to_str("disconnected:",
4418 addr, is_listen, is_telnet);
f6bd5d6e
GH		 4419
4420 if (is_listen) {
43ded1a0
CM		 4421 if (is_telnet) {
4422 s->do_telnetopt = 1;
4423 }
5dd1f02b
CM		 4424 } else if (reconnect > 0) {
4425 s->reconnect_time = reconnect;
f6bd5d6e 4426 }
43ded1a0 4427
08b758b4 4428 sioc = qio_channel_socket_new();
5008e5b7 4429 if (s->reconnect_time) {
317856ca
DB		 4430 qio_channel_socket_connect_async(sioc, s->addr,
4431 qemu_chr_socket_connected,
4432 chr, NULL);
08b758b4
DB		 4433 } else if (s->is_listen) {
4434 if (qio_channel_socket_listen_sync(sioc, s->addr, errp) < 0) {
4435 goto error;
4436 }
4437 s->listen_ioc = sioc;
4438 if (is_waitconnect) {
4439 fprintf(stderr, "QEMU waiting for connection on: %s\n",
4440 chr->filename);
4441 tcp_chr_accept(QIO_CHANNEL(s->listen_ioc), G_IO_IN, chr);
4442 }
9894dc0c 4443 qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), false, NULL);
08b758b4
DB		 4444 if (!s->ioc) {
4445 s->listen_tag = qio_channel_add_watch(
4446 QIO_CHANNEL(s->listen_ioc), G_IO_IN, tcp_chr_accept, chr, NULL);
4447 }
4448 } else {
4449 if (qio_channel_socket_connect_sync(sioc, s->addr, errp) < 0) {
4450 goto error;
4451 }
4452 tcp_chr_new_client(chr, sioc);
4453 object_unref(OBJECT(sioc));
43ded1a0
CM		 4454 }
4455
4456 return chr;
a8fb5427
DB		 4457
4458 error:
08b758b4
DB		 4459 if (sioc) {
4460 object_unref(OBJECT(sioc));
4461 }
a8fb5427
DB		 4462 if (s->tls_creds) {
4463 object_unref(OBJECT(s->tls_creds));
4464 }
4465 g_free(s);
4466 qemu_chr_free_common(chr);
4467 return NULL;
f6bd5d6e
GH		 4468}
4469
e79b80da
PB		 4470static CharDriverState *qmp_chardev_open_udp(const char *id,
4471 ChardevBackend *backend,
4472 ChardevReturn *ret,
08d0ab3f 4473 Error **errp)
3ecc059d 4474{
32bafa8f 4475 ChardevUdp *udp = backend->u.udp.data;
f194a1ae 4476 ChardevCommon *common = qapi_ChardevUdp_base(udp);
9894dc0c 4477 QIOChannelSocket *sioc = qio_channel_socket_new();
3ecc059d 4478
9894dc0c 4479 if (qio_channel_socket_dgram_sync(sioc,
150dcd1a 4480 udp->local, udp->remote,
9894dc0c
DB		 4481 errp) < 0) {
4482 object_unref(OBJECT(sioc));
3ecc059d
GH		 4483 return NULL;
4484 }
9894dc0c 4485 return qemu_chr_open_udp(sioc, common, errp);
3ecc059d
GH		 4486}
4487
f1a1a356
GH		 4488ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
4489 Error **errp)
4490{
4491 ChardevReturn *ret = g_new0(ChardevReturn, 1);
3c0e5a4a 4492 CharDriverState *chr = NULL;
eaeba653 4493 Error *local_err = NULL;
4ca17281
PB		 4494 GSList *i;
4495 CharDriver *cd;
f1a1a356
GH		 4496
4497 chr = qemu_chr_find(id);
4498 if (chr) {
4499 error_setg(errp, "Chardev '%s' already exists", id);
4500 g_free(ret);
4501 return NULL;
4502 }
4503
4ca17281
PB		 4504 for (i = backends; i; i = i->next) {
4505 cd = i->data;
4506
130257dc 4507 if (cd->kind == backend->type) {
4ca17281
PB		 4508 chr = cd->create(id, backend, ret, &local_err);
4509 if (local_err) {
4510 error_propagate(errp, local_err);
4511 goto out_error;
4512 }
4513 break;
4514 }
4515 }
4516
4517 if (chr == NULL) {
1c3af0f4
PB		 4518 assert(!i);
4519 error_setg(errp, "chardev backend not available");
4520 goto out_error;
eaeba653
PB		 4521 }
4522
4523 chr->label = g_strdup(id);
4524 chr->avail_connections =
130257dc 4525 (backend->type == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1;
eaeba653 4526 if (!chr->filename) {
130257dc 4527 chr->filename = g_strdup(ChardevBackendKind_lookup[backend->type]);
f1a1a356 4528 }
eaeba653
PB		 4529 if (!chr->explicit_be_open) {
4530 qemu_chr_be_event(chr, CHR_EVENT_OPENED);
4531 }
4532 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
4533 return ret;
4534
4535out_error:
4536 g_free(ret);
4537 return NULL;
f1a1a356
GH		 4538}
4539
4540void qmp_chardev_remove(const char *id, Error **errp)
4541{
4542 CharDriverState *chr;
4543
4544 chr = qemu_chr_find(id);
8108fd3e 4545 if (chr == NULL) {
f1a1a356
GH		 4546 error_setg(errp, "Chardev '%s' not found", id);
4547 return;
4548 }
4549 if (chr->chr_can_read || chr->chr_read ||
4550 chr->chr_event || chr->handler_opaque) {
4551 error_setg(errp, "Chardev '%s' is busy", id);
4552 return;
4553 }
33577b47
PD		 4554 if (chr->replay) {
4555 error_setg(errp,
4556 "Chardev '%s' cannot be unplugged in record/replay mode", id);
4557 return;
4558 }
f1a1a356
GH		 4559 qemu_chr_delete(chr);
4560}
d654f34e 4561
aa5cb7f5 4562void qemu_chr_cleanup(void)
c1111a24
MAL		 4563{
4564 CharDriverState *chr, *tmp;
4565
4566 QTAILQ_FOREACH_SAFE(chr, &chardevs, next, tmp) {
4567 qemu_chr_delete(chr);
4568 }
4569}
4570
d654f34e
AL		 4571static void register_types(void)
4572{
4ca17281 4573 register_char_driver("null", CHARDEV_BACKEND_KIND_NULL, NULL,
0d64992b 4574 qemu_chr_open_null);
e4d50d47 4575 register_char_driver("socket", CHARDEV_BACKEND_KIND_SOCKET,
dbba8d1b 4576 qemu_chr_parse_socket, qmp_chardev_open_socket);
4ca17281 4577 register_char_driver("udp", CHARDEV_BACKEND_KIND_UDP, qemu_chr_parse_udp,
e79b80da 4578 qmp_chardev_open_udp);
e4d50d47 4579 register_char_driver("ringbuf", CHARDEV_BACKEND_KIND_RINGBUF,
479f09a1 4580 qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf);
e4d50d47 4581 register_char_driver("file", CHARDEV_BACKEND_KIND_FILE,
fd5b036c 4582 qemu_chr_parse_file_out, qmp_chardev_open_file);
e4d50d47 4583 register_char_driver("stdio", CHARDEV_BACKEND_KIND_STDIO,
8c84b25d 4584 qemu_chr_parse_stdio, qemu_chr_open_stdio);
6511d396 4585#if defined HAVE_CHARDEV_SERIAL
e4d50d47 4586 register_char_driver("serial", CHARDEV_BACKEND_KIND_SERIAL,
6511d396 4587 qemu_chr_parse_serial, qmp_chardev_open_serial);
e4d50d47 4588 register_char_driver("tty", CHARDEV_BACKEND_KIND_SERIAL,
6511d396
PB		 4589 qemu_chr_parse_serial, qmp_chardev_open_serial);
4590#endif
38bfb1a6 4591#ifdef HAVE_CHARDEV_PARPORT
e4d50d47 4592 register_char_driver("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
38bfb1a6 4593 qemu_chr_parse_parallel, qmp_chardev_open_parallel);
e4d50d47 4594 register_char_driver("parport", CHARDEV_BACKEND_KIND_PARALLEL,
38bfb1a6
PB		 4595 qemu_chr_parse_parallel, qmp_chardev_open_parallel);
4596#endif
c2e75a43 4597#ifdef HAVE_CHARDEV_PTY
4ca17281 4598 register_char_driver("pty", CHARDEV_BACKEND_KIND_PTY, NULL,
c2e75a43
PB		 4599 qemu_chr_open_pty);
4600#endif
122e5ed4 4601#ifdef _WIN32
4ca17281 4602 register_char_driver("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL,
122e5ed4
PB		 4603 qemu_chr_open_win_con);
4604#endif
e4d50d47 4605 register_char_driver("pipe", CHARDEV_BACKEND_KIND_PIPE,
20cbe7a2 4606 qemu_chr_parse_pipe, qemu_chr_open_pipe);
4ca17281 4607 register_char_driver("mux", CHARDEV_BACKEND_KIND_MUX, qemu_chr_parse_mux,
3c0e5a4a 4608 qemu_chr_open_mux);
c11ed966 4609 /* Bug-compatibility: */
e4d50d47 4610 register_char_driver("memory", CHARDEV_BACKEND_KIND_MEMORY,
479f09a1 4611 qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf);
7b7ab18d
MR		 4612 /* this must be done after machine init, since we register FEs with muxes
4613 * as part of realize functions like serial_isa_realizefn when -nographic
4614 * is specified
4615 */
4616 qemu_add_machine_init_done_notifier(&muxes_realize_notify);
d654f34e
AL		 4617}
4618
4619type_init(register_types);
Mirror of https://git.qemu.org/git/qemu.git