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sysbus: Make devices spawnable via -device
[mirror_qemu.git] / qemu-char.c
CommitLineData
6f97dba0
AL		 1/*
2 * QEMU System Emulator
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24#include "qemu-common.h"
83c9089e 25#include "monitor/monitor.h"
9c17d615 26#include "sysemu/sysemu.h"
1de7afc9 27#include "qemu/timer.h"
dccfcd0e 28#include "sysemu/char.h"
cf3ebac7 29#include "hw/usb.h"
c5a415a0 30#include "qmp-commands.h"
cfb429cb
CM		 31#include "qapi/qmp-input-visitor.h"
32#include "qapi/qmp-output-visitor.h"
33#include "qapi-visit.h"
6f97dba0
AL		 34
35#include <unistd.h>
36#include <fcntl.h>
6f97dba0
AL		 37#include <time.h>
38#include <errno.h>
39#include <sys/time.h>
40#include <zlib.h>
41
42#ifndef _WIN32
43#include <sys/times.h>
44#include <sys/wait.h>
45#include <termios.h>
46#include <sys/mman.h>
47#include <sys/ioctl.h>
24646c7e 48#include <sys/resource.h>
6f97dba0
AL		 49#include <sys/socket.h>
50#include <netinet/in.h>
24646c7e 51#include <net/if.h>
24646c7e 52#include <arpa/inet.h>
6f97dba0
AL		 53#include <dirent.h>
54#include <netdb.h>
55#include <sys/select.h>
71e72a19 56#ifdef CONFIG_BSD
6f97dba0 57#include <sys/stat.h>
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__
71#include <sys/stat.h>
72#include <sys/ethernet.h>
73#include <sys/sockio.h>
74#include <netinet/arp.h>
75#include <netinet/in.h>
76#include <netinet/in_systm.h>
77#include <netinet/ip.h>
78#include <netinet/ip_icmp.h> // must come after ip.h
79#include <netinet/udp.h>
80#include <netinet/tcp.h>
6f97dba0
AL		 81#endif
82#endif
83#endif
84
1de7afc9 85#include "qemu/sockets.h"
cbcc6336 86#include "ui/qemu-spice.h"
6f97dba0 87
9bd7854e 88#define READ_BUF_LEN 4096
7b0bfdf5 89#define READ_RETRIES 10
9f781168 90#define CHR_MAX_FILENAME_SIZE 256
9bd7854e 91
cfb429cb
CM		 92/***********************************************************/
93/* Socket address helpers */
94static void qapi_copy_SocketAddress(SocketAddress **p_dest,
95 SocketAddress *src)
96{
97 QmpOutputVisitor *qov;
98 QmpInputVisitor *qiv;
99 Visitor *ov, *iv;
100 QObject *obj;
101
102 *p_dest = NULL;
103
104 qov = qmp_output_visitor_new();
105 ov = qmp_output_get_visitor(qov);
106 visit_type_SocketAddress(ov, &src, NULL, &error_abort);
107 obj = qmp_output_get_qobject(qov);
108 qmp_output_visitor_cleanup(qov);
109 if (!obj) {
110 return;
111 }
112
113 qiv = qmp_input_visitor_new(obj);
114 iv = qmp_input_get_visitor(qiv);
115 visit_type_SocketAddress(iv, p_dest, NULL, &error_abort);
116 qmp_input_visitor_cleanup(qiv);
117 qobject_decref(obj);
118}
119
16cc4ffe
CM		 120static int SocketAddress_to_str(char *dest, int max_len,
121 const char *prefix, SocketAddress *addr,
122 bool is_listen, bool is_telnet)
123{
124 switch (addr->kind) {
125 case SOCKET_ADDRESS_KIND_INET:
126 return snprintf(dest, max_len, "%s%s:%s:%s%s", prefix,
127 is_telnet ? "telnet" : "tcp", addr->inet->host,
128 addr->inet->port, is_listen ? ",server" : "");
129 break;
130 case SOCKET_ADDRESS_KIND_UNIX:
131 return snprintf(dest, max_len, "%sunix:%s%s", prefix,
132 addr->q_unix->path, is_listen ? ",server" : "");
133 break;
134 case SOCKET_ADDRESS_KIND_FD:
135 return snprintf(dest, max_len, "%sfd:%s%s", prefix, addr->fd->str,
136 is_listen ? ",server" : "");
137 break;
138 default:
139 abort();
140 }
141}
142
143static int sockaddr_to_str(char *dest, int max_len,
144 struct sockaddr_storage *ss, socklen_t ss_len,
01ca519f 145 struct sockaddr_storage *ps, socklen_t ps_len,
16cc4ffe
CM		 146 bool is_listen, bool is_telnet)
147{
01ca519f
CM		 148 char shost[NI_MAXHOST], sserv[NI_MAXSERV];
149 char phost[NI_MAXHOST], pserv[NI_MAXSERV];
16cc4ffe
CM		 150 const char *left = "", *right = "";
151
152 switch (ss->ss_family) {
153#ifndef _WIN32
154 case AF_UNIX:
155 return snprintf(dest, max_len, "unix:%s%s",
156 ((struct sockaddr_un *)(ss))->sun_path,
157 is_listen ? ",server" : "");
158#endif
159 case AF_INET6:
160 left = "[";
161 right = "]";
162 /* fall through */
163 case AF_INET:
01ca519f
CM		 164 getnameinfo((struct sockaddr *) ss, ss_len, shost, sizeof(shost),
165 sserv, sizeof(sserv), NI_NUMERICHOST | NI_NUMERICSERV);
166 getnameinfo((struct sockaddr *) ps, ps_len, phost, sizeof(phost),
167 pserv, sizeof(pserv), NI_NUMERICHOST | NI_NUMERICSERV);
168 return snprintf(dest, max_len, "%s:%s%s%s:%s%s <-> %s%s%s:%s",
16cc4ffe 169 is_telnet ? "telnet" : "tcp",
01ca519f
CM		 170 left, shost, right, sserv,
171 is_listen ? ",server" : "",
172 left, phost, right, pserv);
16cc4ffe
CM		 173
174 default:
175 return snprintf(dest, max_len, "unknown");
176 }
177}
178
6f97dba0
AL		 179/***********************************************************/
180/* character device */
181
72cf2d4f
BS		 182static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
183 QTAILQ_HEAD_INITIALIZER(chardevs);
2970a6c9 184
db39fcf1
PB		 185CharDriverState *qemu_chr_alloc(void)
186{
187 CharDriverState *chr = g_malloc0(sizeof(CharDriverState));
f3db17b9 188 qemu_mutex_init(&chr->chr_write_lock);
db39fcf1
PB		 189 return chr;
190}
191
a425d23f 192void qemu_chr_be_event(CharDriverState *s, int event)
6f97dba0 193{
73cdf3f2
AG		 194 /* Keep track if the char device is open */
195 switch (event) {
196 case CHR_EVENT_OPENED:
16665b94 197 s->be_open = 1;
73cdf3f2
AG		 198 break;
199 case CHR_EVENT_CLOSED:
16665b94 200 s->be_open = 0;
73cdf3f2
AG		 201 break;
202 }
203
6f97dba0
AL		 204 if (!s->chr_event)
205 return;
206 s->chr_event(s->handler_opaque, event);
207}
208
fee204fd 209void qemu_chr_be_generic_open(CharDriverState *s)
6f97dba0 210{
bd5c51ee 211 qemu_chr_be_event(s, CHR_EVENT_OPENED);
6f97dba0
AL		 212}
213
2cc6e0a1 214int qemu_chr_fe_write(CharDriverState *s, const uint8_t *buf, int len)
6f97dba0 215{
9005b2a7
PB		 216 int ret;
217
218 qemu_mutex_lock(&s->chr_write_lock);
219 ret = s->chr_write(s, buf, len);
220 qemu_mutex_unlock(&s->chr_write_lock);
221 return ret;
6f97dba0
AL		 222}
223
cd18720a
AL		 224int qemu_chr_fe_write_all(CharDriverState *s, const uint8_t *buf, int len)
225{
226 int offset = 0;
09313047 227 int res = 0;
cd18720a 228
9005b2a7 229 qemu_mutex_lock(&s->chr_write_lock);
cd18720a
AL		 230 while (offset < len) {
231 do {
232 res = s->chr_write(s, buf + offset, len - offset);
233 if (res == -1 && errno == EAGAIN) {
234 g_usleep(100);
235 }
236 } while (res == -1 && errno == EAGAIN);
237
9005b2a7 238 if (res <= 0) {
cd18720a
AL		 239 break;
240 }
241
cd18720a
AL		 242 offset += res;
243 }
9005b2a7 244 qemu_mutex_unlock(&s->chr_write_lock);
cd18720a 245
9005b2a7
PB		 246 if (res < 0) {
247 return res;
248 }
cd18720a
AL		 249 return offset;
250}
251
7b0bfdf5
NN		 252int qemu_chr_fe_read_all(CharDriverState *s, uint8_t *buf, int len)
253{
254 int offset = 0, counter = 10;
255 int res;
256
257 if (!s->chr_sync_read) {
258 return 0;
259 }
260
261 while (offset < len) {
262 do {
263 res = s->chr_sync_read(s, buf + offset, len - offset);
264 if (res == -1 && errno == EAGAIN) {
265 g_usleep(100);
266 }
267 } while (res == -1 && errno == EAGAIN);
268
269 if (res == 0) {
270 break;
271 }
272
273 if (res < 0) {
274 return res;
275 }
276
277 offset += res;
278
279 if (!counter--) {
280 break;
281 }
282 }
283
284 return offset;
285}
286
41084f1b 287int qemu_chr_fe_ioctl(CharDriverState *s, int cmd, void *arg)
6f97dba0
AL		 288{
289 if (!s->chr_ioctl)
290 return -ENOTSUP;
291 return s->chr_ioctl(s, cmd, arg);
292}
293
909cda12 294int qemu_chr_be_can_write(CharDriverState *s)
6f97dba0
AL		 295{
296 if (!s->chr_can_read)
297 return 0;
298 return s->chr_can_read(s->handler_opaque);
299}
300
fa5efccb 301void qemu_chr_be_write(CharDriverState *s, uint8_t *buf, int len)
6f97dba0 302{
ac310734
SW		 303 if (s->chr_read) {
304 s->chr_read(s->handler_opaque, buf, len);
305 }
6f97dba0
AL		 306}
307
74c0d6f0 308int qemu_chr_fe_get_msgfd(CharDriverState *s)
7d174059 309{
c76bf6bb 310 int fd;
4f858614 311 return (qemu_chr_fe_get_msgfds(s, &fd, 1) == 1) ? fd : -1;
c76bf6bb
NN		 312}
313
314int qemu_chr_fe_get_msgfds(CharDriverState *s, int *fds, int len)
315{
316 return s->get_msgfds ? s->get_msgfds(s, fds, len) : -1;
7d174059
MM		 317}
318
d39aac7a
NN		 319int qemu_chr_fe_set_msgfds(CharDriverState *s, int *fds, int num)
320{
321 return s->set_msgfds ? s->set_msgfds(s, fds, num) : -1;
322}
323
13661089
DB		 324int qemu_chr_add_client(CharDriverState *s, int fd)
325{
326 return s->chr_add_client ? s->chr_add_client(s, fd) : -1;
327}
328
6f97dba0
AL		 329void qemu_chr_accept_input(CharDriverState *s)
330{
331 if (s->chr_accept_input)
332 s->chr_accept_input(s);
98c8ee1d 333 qemu_notify_event();
6f97dba0
AL		 334}
335
e7e71b0e 336void qemu_chr_fe_printf(CharDriverState *s, const char *fmt, ...)
6f97dba0 337{
9bd7854e 338 char buf[READ_BUF_LEN];
6f97dba0
AL		 339 va_list ap;
340 va_start(ap, fmt);
341 vsnprintf(buf, sizeof(buf), fmt, ap);
2cc6e0a1 342 qemu_chr_fe_write(s, (uint8_t *)buf, strlen(buf));
6f97dba0
AL		 343 va_end(ap);
344}
345
386a5a1e
AS		 346static void remove_fd_in_watch(CharDriverState *chr);
347
6f97dba0 348void qemu_chr_add_handlers(CharDriverState *s,
7b27a769 349 IOCanReadHandler *fd_can_read,
6f97dba0
AL		 350 IOReadHandler *fd_read,
351 IOEventHandler *fd_event,
352 void *opaque)
353{
19083228
HG		 354 int fe_open;
355
da7d998b 356 if (!opaque && !fd_can_read && !fd_read && !fd_event) {
19083228 357 fe_open = 0;
386a5a1e 358 remove_fd_in_watch(s);
19083228
HG		 359 } else {
360 fe_open = 1;
2d6c1ef4 361 }
6f97dba0
AL		 362 s->chr_can_read = fd_can_read;
363 s->chr_read = fd_read;
364 s->chr_event = fd_event;
365 s->handler_opaque = opaque;
ac1b84dd 366 if (fe_open && s->chr_update_read_handler)
6f97dba0 367 s->chr_update_read_handler(s);
73cdf3f2 368
19083228 369 if (!s->explicit_fe_open) {
8e25daa8 370 qemu_chr_fe_set_open(s, fe_open);
19083228
HG		 371 }
372
73cdf3f2
AG		 373 /* We're connecting to an already opened device, so let's make sure we
374 also get the open event */
a59bcd31 375 if (fe_open && s->be_open) {
fee204fd 376 qemu_chr_be_generic_open(s);
73cdf3f2 377 }
6f97dba0
AL		 378}
379
380static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
381{
382 return len;
383}
384
80dca9e6 385static CharDriverState *qemu_chr_open_null(void)
6f97dba0
AL		 386{
387 CharDriverState *chr;
388
db39fcf1 389 chr = qemu_chr_alloc();
6f97dba0 390 chr->chr_write = null_chr_write;
bd5c51ee 391 chr->explicit_be_open = true;
1f51470d 392 return chr;
6f97dba0
AL		 393}
394
395/* MUX driver for serial I/O splitting */
6f97dba0
AL		 396#define MAX_MUX 4
397#define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
398#define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
399typedef struct {
7b27a769 400 IOCanReadHandler *chr_can_read[MAX_MUX];
6f97dba0
AL		 401 IOReadHandler *chr_read[MAX_MUX];
402 IOEventHandler *chr_event[MAX_MUX];
403 void *ext_opaque[MAX_MUX];
404 CharDriverState *drv;
799f1f23 405 int focus;
6f97dba0
AL		 406 int mux_cnt;
407 int term_got_escape;
408 int max_size;
a80bf99f
AL		 409 /* Intermediate input buffer allows to catch escape sequences even if the
410 currently active device is not accepting any input - but only until it
411 is full as well. */
412 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
413 int prod[MAX_MUX];
414 int cons[MAX_MUX];
2d22959d 415 int timestamps;
9005b2a7
PB		 416
417 /* Protected by the CharDriverState chr_write_lock. */
4ab312f7 418 int linestart;
2d22959d 419 int64_t timestamps_start;
6f97dba0
AL		 420} MuxDriver;
421
422
9005b2a7 423/* Called with chr_write_lock held. */
6f97dba0
AL		 424static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
425{
426 MuxDriver *d = chr->opaque;
427 int ret;
2d22959d 428 if (!d->timestamps) {
6975b713 429 ret = qemu_chr_fe_write(d->drv, buf, len);
6f97dba0
AL		 430 } else {
431 int i;
432
433 ret = 0;
4ab312f7
JK		 434 for (i = 0; i < len; i++) {
435 if (d->linestart) {
6f97dba0
AL		 436 char buf1[64];
437 int64_t ti;
438 int secs;
439
bc72ad67 440 ti = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
2d22959d
JK		 441 if (d->timestamps_start == -1)
442 d->timestamps_start = ti;
443 ti -= d->timestamps_start;
a4bb1db8 444 secs = ti / 1000;
6f97dba0
AL		 445 snprintf(buf1, sizeof(buf1),
446 "[%02d:%02d:%02d.%03d] ",
447 secs / 3600,
448 (secs / 60) % 60,
449 secs % 60,
a4bb1db8 450 (int)(ti % 1000));
6975b713 451 qemu_chr_fe_write(d->drv, (uint8_t *)buf1, strlen(buf1));
4ab312f7
JK		 452 d->linestart = 0;
453 }
6975b713 454 ret += qemu_chr_fe_write(d->drv, buf+i, 1);
4ab312f7
JK		 455 if (buf[i] == '\n') {
456 d->linestart = 1;
6f97dba0
AL		 457 }
458 }
459 }
460 return ret;
461}
462
463static const char * const mux_help[] = {
464 "% h print this help\n\r",
465 "% x exit emulator\n\r",
466 "% s save disk data back to file (if -snapshot)\n\r",
467 "% t toggle console timestamps\n\r"
468 "% b send break (magic sysrq)\n\r",
469 "% c switch between console and monitor\n\r",
470 "% % sends %\n\r",
471 NULL
472};
473
474int term_escape_char = 0x01; /* ctrl-a is used for escape */
475static void mux_print_help(CharDriverState *chr)
476{
477 int i, j;
478 char ebuf[15] = "Escape-Char";
479 char cbuf[50] = "\n\r";
480
481 if (term_escape_char > 0 && term_escape_char < 26) {
482 snprintf(cbuf, sizeof(cbuf), "\n\r");
483 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
484 } else {
485 snprintf(cbuf, sizeof(cbuf),
486 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
487 term_escape_char);
488 }
6975b713 489 qemu_chr_fe_write(chr, (uint8_t *)cbuf, strlen(cbuf));
6f97dba0
AL		 490 for (i = 0; mux_help[i] != NULL; i++) {
491 for (j=0; mux_help[i][j] != '\0'; j++) {
492 if (mux_help[i][j] == '%')
6975b713 493 qemu_chr_fe_write(chr, (uint8_t *)ebuf, strlen(ebuf));
6f97dba0 494 else
6975b713 495 qemu_chr_fe_write(chr, (uint8_t *)&mux_help[i][j], 1);
6f97dba0
AL		 496 }
497 }
498}
499
2724b180
AL		 500static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
501{
502 if (d->chr_event[mux_nr])
503 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
504}
505
6f97dba0
AL		 506static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
507{
508 if (d->term_got_escape) {
509 d->term_got_escape = 0;
510 if (ch == term_escape_char)
511 goto send_char;
512 switch(ch) {
513 case '?':
514 case 'h':
515 mux_print_help(chr);
516 break;
517 case 'x':
518 {
519 const char *term = "QEMU: Terminated\n\r";
6975b713 520 qemu_chr_fe_write(chr, (uint8_t *)term, strlen(term));
6f97dba0
AL		 521 exit(0);
522 break;
523 }
524 case 's':
6ab4b5ab 525 bdrv_commit_all();
6f97dba0
AL		 526 break;
527 case 'b':
a425d23f 528 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
6f97dba0
AL		 529 break;
530 case 'c':
531 /* Switch to the next registered device */
799f1f23
GH		 532 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
533 d->focus++;
534 if (d->focus >= d->mux_cnt)
535 d->focus = 0;
536 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
6f97dba0 537 break;
2d22959d
JK		 538 case 't':
539 d->timestamps = !d->timestamps;
540 d->timestamps_start = -1;
4ab312f7 541 d->linestart = 0;
2d22959d 542 break;
6f97dba0
AL		 543 }
544 } else if (ch == term_escape_char) {
545 d->term_got_escape = 1;
546 } else {
547 send_char:
548 return 1;
549 }
550 return 0;
551}
552
553static void mux_chr_accept_input(CharDriverState *chr)
554{
6f97dba0 555 MuxDriver *d = chr->opaque;
799f1f23 556 int m = d->focus;
6f97dba0 557
a80bf99f 558 while (d->prod[m] != d->cons[m] &&
6f97dba0
AL		 559 d->chr_can_read[m] &&
560 d->chr_can_read[m](d->ext_opaque[m])) {
561 d->chr_read[m](d->ext_opaque[m],
a80bf99f 562 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
6f97dba0
AL		 563 }
564}
565
566static int mux_chr_can_read(void *opaque)
567{
568 CharDriverState *chr = opaque;
569 MuxDriver *d = chr->opaque;
799f1f23 570 int m = d->focus;
6f97dba0 571
a80bf99f 572 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
6f97dba0 573 return 1;
a80bf99f
AL		 574 if (d->chr_can_read[m])
575 return d->chr_can_read[m](d->ext_opaque[m]);
6f97dba0
AL		 576 return 0;
577}
578
579static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
580{
581 CharDriverState *chr = opaque;
582 MuxDriver *d = chr->opaque;
799f1f23 583 int m = d->focus;
6f97dba0
AL		 584 int i;
585
586 mux_chr_accept_input (opaque);
587
588 for(i = 0; i < size; i++)
589 if (mux_proc_byte(chr, d, buf[i])) {
a80bf99f 590 if (d->prod[m] == d->cons[m] &&
6f97dba0
AL		 591 d->chr_can_read[m] &&
592 d->chr_can_read[m](d->ext_opaque[m]))
593 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
594 else
a80bf99f 595 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
6f97dba0
AL		 596 }
597}
598
599static void mux_chr_event(void *opaque, int event)
600{
601 CharDriverState *chr = opaque;
602 MuxDriver *d = chr->opaque;
603 int i;
604
605 /* Send the event to all registered listeners */
606 for (i = 0; i < d->mux_cnt; i++)
2724b180 607 mux_chr_send_event(d, i, event);
6f97dba0
AL		 608}
609
610static void mux_chr_update_read_handler(CharDriverState *chr)
611{
612 MuxDriver *d = chr->opaque;
613
614 if (d->mux_cnt >= MAX_MUX) {
615 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
616 return;
617 }
618 d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
619 d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
620 d->chr_read[d->mux_cnt] = chr->chr_read;
621 d->chr_event[d->mux_cnt] = chr->chr_event;
622 /* Fix up the real driver with mux routines */
623 if (d->mux_cnt == 0) {
624 qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
625 mux_chr_event, chr);
626 }
799f1f23
GH		 627 if (d->focus != -1) {
628 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
a7aec5da 629 }
799f1f23 630 d->focus = d->mux_cnt;
6f97dba0 631 d->mux_cnt++;
799f1f23 632 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
6f97dba0
AL		 633}
634
7b7ab18d
MR		 635static bool muxes_realized;
636
637/**
638 * Called after processing of default and command-line-specified
639 * chardevs to deliver CHR_EVENT_OPENED events to any FEs attached
640 * to a mux chardev. This is done here to ensure that
641 * output/prompts/banners are only displayed for the FE that has
642 * focus when initial command-line processing/machine init is
643 * completed.
644 *
645 * After this point, any new FE attached to any new or existing
646 * mux will receive CHR_EVENT_OPENED notifications for the BE
647 * immediately.
648 */
649static void muxes_realize_done(Notifier *notifier, void *unused)
650{
651 CharDriverState *chr;
652
653 QTAILQ_FOREACH(chr, &chardevs, next) {
654 if (chr->is_mux) {
655 MuxDriver *d = chr->opaque;
656 int i;
657
658 /* send OPENED to all already-attached FEs */
659 for (i = 0; i < d->mux_cnt; i++) {
660 mux_chr_send_event(d, i, CHR_EVENT_OPENED);
661 }
662 /* mark mux as OPENED so any new FEs will immediately receive
663 * OPENED event
664 */
665 qemu_chr_be_generic_open(chr);
666 }
667 }
668 muxes_realized = true;
669}
670
671static Notifier muxes_realize_notify = {
672 .notify = muxes_realize_done,
673};
674
3f0838ab
KB		 675static GSource *mux_chr_add_watch(CharDriverState *s, GIOCondition cond)
676{
677 MuxDriver *d = s->opaque;
678 return d->drv->chr_add_watch(d->drv, cond);
679}
680
6f97dba0
AL		 681static CharDriverState *qemu_chr_open_mux(CharDriverState *drv)
682{
683 CharDriverState *chr;
684 MuxDriver *d;
685
db39fcf1 686 chr = qemu_chr_alloc();
7267c094 687 d = g_malloc0(sizeof(MuxDriver));
6f97dba0
AL		 688
689 chr->opaque = d;
690 d->drv = drv;
799f1f23 691 d->focus = -1;
6f97dba0
AL		 692 chr->chr_write = mux_chr_write;
693 chr->chr_update_read_handler = mux_chr_update_read_handler;
694 chr->chr_accept_input = mux_chr_accept_input;
7c32c4fe 695 /* Frontend guest-open / -close notification is not support with muxes */
574b711a 696 chr->chr_set_fe_open = NULL;
3f0838ab
KB		 697 if (drv->chr_add_watch) {
698 chr->chr_add_watch = mux_chr_add_watch;
699 }
7b7ab18d
MR		 700 /* only default to opened state if we've realized the initial
701 * set of muxes
702 */
703 chr->explicit_be_open = muxes_realized ? 0 : 1;
704 chr->is_mux = 1;
73cdf3f2 705
6f97dba0
AL		 706 return chr;
707}
708
709
710#ifdef _WIN32
d247d25f 711int send_all(int fd, const void *buf, int len1)
6f97dba0
AL		 712{
713 int ret, len;
714
715 len = len1;
716 while (len > 0) {
717 ret = send(fd, buf, len, 0);
718 if (ret < 0) {
6f97dba0
AL		 719 errno = WSAGetLastError();
720 if (errno != WSAEWOULDBLOCK) {
721 return -1;
722 }
723 } else if (ret == 0) {
724 break;
725 } else {
726 buf += ret;
727 len -= ret;
728 }
729 }
730 return len1 - len;
731}
732
733#else
734
5fc9cfed 735int send_all(int fd, const void *_buf, int len1)
6f97dba0
AL		 736{
737 int ret, len;
5fc9cfed 738 const uint8_t *buf = _buf;
6f97dba0
AL		 739
740 len = len1;
741 while (len > 0) {
742 ret = write(fd, buf, len);
743 if (ret < 0) {
744 if (errno != EINTR && errno != EAGAIN)
745 return -1;
746 } else if (ret == 0) {
747 break;
748 } else {
749 buf += ret;
750 len -= ret;
751 }
752 }
753 return len1 - len;
754}
4549a8b7
SB		 755
756int recv_all(int fd, void *_buf, int len1, bool single_read)
757{
758 int ret, len;
759 uint8_t *buf = _buf;
760
761 len = len1;
762 while ((len > 0) && (ret = read(fd, buf, len)) != 0) {
763 if (ret < 0) {
764 if (errno != EINTR && errno != EAGAIN) {
765 return -1;
766 }
767 continue;
768 } else {
769 if (single_read) {
770 return ret;
771 }
772 buf += ret;
773 len -= ret;
774 }
775 }
776 return len1 - len;
777}
778
6f97dba0
AL		 779#endif /* !_WIN32 */
780
96c63847
AL		 781typedef struct IOWatchPoll
782{
d185c094
PB		 783 GSource parent;
784
1e885b25 785 GIOChannel *channel;
96c63847 786 GSource *src;
96c63847
AL		 787
788 IOCanReadHandler *fd_can_read;
1e885b25 789 GSourceFunc fd_read;
96c63847 790 void *opaque;
96c63847
AL		 791} IOWatchPoll;
792
96c63847
AL		 793static IOWatchPoll *io_watch_poll_from_source(GSource *source)
794{
d185c094 795 return container_of(source, IOWatchPoll, parent);
96c63847
AL		 796}
797
798static gboolean io_watch_poll_prepare(GSource *source, gint *timeout_)
799{
800 IOWatchPoll *iwp = io_watch_poll_from_source(source);
d185c094 801 bool now_active = iwp->fd_can_read(iwp->opaque) > 0;
1e885b25 802 bool was_active = iwp->src != NULL;
d185c094 803 if (was_active == now_active) {
96c63847
AL		 804 return FALSE;
805 }
806
d185c094 807 if (now_active) {
1e885b25
PB		 808 iwp->src = g_io_create_watch(iwp->channel, G_IO_IN | G_IO_ERR | G_IO_HUP);
809 g_source_set_callback(iwp->src, iwp->fd_read, iwp->opaque, NULL);
d185c094
PB		 810 g_source_attach(iwp->src, NULL);
811 } else {
1e885b25
PB		 812 g_source_destroy(iwp->src);
813 g_source_unref(iwp->src);
814 iwp->src = NULL;
d185c094
PB		 815 }
816 return FALSE;
96c63847
AL		 817}
818
819static gboolean io_watch_poll_check(GSource *source)
820{
d185c094 821 return FALSE;
96c63847
AL		 822}
823
824static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
825 gpointer user_data)
826{
d185c094 827 abort();
96c63847
AL		 828}
829
830static void io_watch_poll_finalize(GSource *source)
831{
2b316774
PB		 832 /* Due to a glib bug, removing the last reference to a source
833 * inside a finalize callback causes recursive locking (and a
834 * deadlock). This is not a problem inside other callbacks,
835 * including dispatch callbacks, so we call io_remove_watch_poll
836 * to remove this source. At this point, iwp->src must
837 * be NULL, or we would leak it.
838 *
839 * This would be solved much more elegantly by child sources,
840 * but we support older glib versions that do not have them.
841 */
96c63847 842 IOWatchPoll *iwp = io_watch_poll_from_source(source);
2b316774 843 assert(iwp->src == NULL);
96c63847
AL		 844}
845
846static GSourceFuncs io_watch_poll_funcs = {
847 .prepare = io_watch_poll_prepare,
848 .check = io_watch_poll_check,
849 .dispatch = io_watch_poll_dispatch,
850 .finalize = io_watch_poll_finalize,
851};
852
853/* Can only be used for read */
854static guint io_add_watch_poll(GIOChannel *channel,
855 IOCanReadHandler *fd_can_read,
856 GIOFunc fd_read,
857 gpointer user_data)
858{
859 IOWatchPoll *iwp;
0ca5aa4f 860 int tag;
96c63847 861
d185c094 862 iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs, sizeof(IOWatchPoll));
96c63847
AL		 863 iwp->fd_can_read = fd_can_read;
864 iwp->opaque = user_data;
1e885b25
PB		 865 iwp->channel = channel;
866 iwp->fd_read = (GSourceFunc) fd_read;
867 iwp->src = NULL;
96c63847 868
0ca5aa4f
PB		 869 tag = g_source_attach(&iwp->parent, NULL);
870 g_source_unref(&iwp->parent);
871 return tag;
96c63847
AL		 872}
873
2b316774
PB		 874static void io_remove_watch_poll(guint tag)
875{
876 GSource *source;
877 IOWatchPoll *iwp;
878
879 g_return_if_fail (tag > 0);
880
881 source = g_main_context_find_source_by_id(NULL, tag);
882 g_return_if_fail (source != NULL);
883
884 iwp = io_watch_poll_from_source(source);
885 if (iwp->src) {
886 g_source_destroy(iwp->src);
887 g_source_unref(iwp->src);
888 iwp->src = NULL;
889 }
890 g_source_destroy(&iwp->parent);
891}
892
26da70c7
AS		 893static void remove_fd_in_watch(CharDriverState *chr)
894{
895 if (chr->fd_in_tag) {
896 io_remove_watch_poll(chr->fd_in_tag);
897 chr->fd_in_tag = 0;
898 }
899}
900
44ab9ed4 901#ifndef _WIN32
96c63847
AL		 902static GIOChannel *io_channel_from_fd(int fd)
903{
904 GIOChannel *chan;
905
906 if (fd == -1) {
907 return NULL;
908 }
909
910 chan = g_io_channel_unix_new(fd);
911
912 g_io_channel_set_encoding(chan, NULL, NULL);
913 g_io_channel_set_buffered(chan, FALSE);
914
915 return chan;
916}
44ab9ed4 917#endif
96c63847 918
76a9644b
AL		 919static GIOChannel *io_channel_from_socket(int fd)
920{
921 GIOChannel *chan;
922
923 if (fd == -1) {
924 return NULL;
925 }
926
927#ifdef _WIN32
928 chan = g_io_channel_win32_new_socket(fd);
929#else
930 chan = g_io_channel_unix_new(fd);
931#endif
932
933 g_io_channel_set_encoding(chan, NULL, NULL);
934 g_io_channel_set_buffered(chan, FALSE);
935
936 return chan;
937}
938
684a096e 939static int io_channel_send(GIOChannel *fd, const void *buf, size_t len)
96c63847 940{
ac8c26f6
LE		 941 size_t offset = 0;
942 GIOStatus status = G_IO_STATUS_NORMAL;
96c63847 943
ac8c26f6
LE		 944 while (offset < len && status == G_IO_STATUS_NORMAL) {
945 gsize bytes_written = 0;
684a096e
AL		 946
947 status = g_io_channel_write_chars(fd, buf + offset, len - offset,
96c63847 948 &bytes_written, NULL);
684a096e 949 offset += bytes_written;
96c63847 950 }
684a096e 951
ac8c26f6
LE		 952 if (offset > 0) {
953 return offset;
954 }
955 switch (status) {
956 case G_IO_STATUS_NORMAL:
957 g_assert(len == 0);
958 return 0;
959 case G_IO_STATUS_AGAIN:
960 errno = EAGAIN;
961 return -1;
962 default:
963 break;
964 }
965 errno = EINVAL;
966 return -1;
96c63847 967}
96c63847 968
44ab9ed4
BS		 969#ifndef _WIN32
970
a29753f8
AL		 971typedef struct FDCharDriver {
972 CharDriverState *chr;
973 GIOChannel *fd_in, *fd_out;
6f97dba0 974 int max_size;
a29753f8 975 QTAILQ_ENTRY(FDCharDriver) node;
6f97dba0
AL		 976} FDCharDriver;
977
9005b2a7 978/* Called with chr_write_lock held. */
6f97dba0
AL		 979static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
980{
981 FDCharDriver *s = chr->opaque;
a29753f8 982
684a096e 983 return io_channel_send(s->fd_out, buf, len);
6f97dba0
AL		 984}
985
a29753f8 986static gboolean fd_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 987{
988 CharDriverState *chr = opaque;
989 FDCharDriver *s = chr->opaque;
a29753f8 990 int len;
9bd7854e 991 uint8_t buf[READ_BUF_LEN];
a29753f8
AL		 992 GIOStatus status;
993 gsize bytes_read;
6f97dba0
AL		 994
995 len = sizeof(buf);
a29753f8 996 if (len > s->max_size) {
6f97dba0 997 len = s->max_size;
a29753f8
AL		 998 }
999 if (len == 0) {
cdbf6e16 1000 return TRUE;
a29753f8
AL		 1001 }
1002
1003 status = g_io_channel_read_chars(chan, (gchar *)buf,
1004 len, &bytes_read, NULL);
1005 if (status == G_IO_STATUS_EOF) {
26da70c7 1006 remove_fd_in_watch(chr);
a425d23f 1007 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
a29753f8 1008 return FALSE;
6f97dba0 1009 }
a29753f8
AL		 1010 if (status == G_IO_STATUS_NORMAL) {
1011 qemu_chr_be_write(chr, buf, bytes_read);
6f97dba0 1012 }
a29753f8
AL		 1013
1014 return TRUE;
1015}
1016
1017static int fd_chr_read_poll(void *opaque)
1018{
1019 CharDriverState *chr = opaque;
1020 FDCharDriver *s = chr->opaque;
1021
1022 s->max_size = qemu_chr_be_can_write(chr);
1023 return s->max_size;
6f97dba0
AL		 1024}
1025
23673ca7
AL		 1026static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1027{
1028 FDCharDriver *s = chr->opaque;
1029 return g_io_create_watch(s->fd_out, cond);
1030}
1031
6f97dba0
AL		 1032static void fd_chr_update_read_handler(CharDriverState *chr)
1033{
1034 FDCharDriver *s = chr->opaque;
1035
26da70c7 1036 remove_fd_in_watch(chr);
a29753f8 1037 if (s->fd_in) {
7ba9addc
AS		 1038 chr->fd_in_tag = io_add_watch_poll(s->fd_in, fd_chr_read_poll,
1039 fd_chr_read, chr);
6f97dba0
AL		 1040 }
1041}
1042
1043static void fd_chr_close(struct CharDriverState *chr)
1044{
1045 FDCharDriver *s = chr->opaque;
1046
26da70c7 1047 remove_fd_in_watch(chr);
a29753f8
AL		 1048 if (s->fd_in) {
1049 g_io_channel_unref(s->fd_in);
1050 }
1051 if (s->fd_out) {
1052 g_io_channel_unref(s->fd_out);
6f97dba0
AL		 1053 }
1054
7267c094 1055 g_free(s);
a425d23f 1056 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1057}
1058
1059/* open a character device to a unix fd */
1060static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
1061{
1062 CharDriverState *chr;
1063 FDCharDriver *s;
1064
db39fcf1 1065 chr = qemu_chr_alloc();
7267c094 1066 s = g_malloc0(sizeof(FDCharDriver));
a29753f8
AL		 1067 s->fd_in = io_channel_from_fd(fd_in);
1068 s->fd_out = io_channel_from_fd(fd_out);
4ff12bdb 1069 qemu_set_nonblock(fd_out);
a29753f8 1070 s->chr = chr;
6f97dba0 1071 chr->opaque = s;
23673ca7 1072 chr->chr_add_watch = fd_chr_add_watch;
6f97dba0
AL		 1073 chr->chr_write = fd_chr_write;
1074 chr->chr_update_read_handler = fd_chr_update_read_handler;
1075 chr->chr_close = fd_chr_close;
1076
6f97dba0
AL		 1077 return chr;
1078}
1079
548cbb36 1080static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
6f97dba0
AL		 1081{
1082 int fd_in, fd_out;
9f781168
CM		 1083 char filename_in[CHR_MAX_FILENAME_SIZE];
1084 char filename_out[CHR_MAX_FILENAME_SIZE];
548cbb36 1085 const char *filename = opts->device;
7d31544f
GH		 1086
1087 if (filename == NULL) {
1088 fprintf(stderr, "chardev: pipe: no filename given\n");
1f51470d 1089 return NULL;
7d31544f 1090 }
6f97dba0 1091
9f781168
CM		 1092 snprintf(filename_in, CHR_MAX_FILENAME_SIZE, "%s.in", filename);
1093 snprintf(filename_out, CHR_MAX_FILENAME_SIZE, "%s.out", filename);
40ff6d7e
KW		 1094 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
1095 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
6f97dba0
AL		 1096 if (fd_in < 0 || fd_out < 0) {
1097 if (fd_in >= 0)
1098 close(fd_in);
1099 if (fd_out >= 0)
1100 close(fd_out);
b181e047 1101 TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
a89dd6c3 1102 if (fd_in < 0) {
1f51470d 1103 return NULL;
a89dd6c3 1104 }
6f97dba0 1105 }
1f51470d 1106 return qemu_chr_open_fd(fd_in, fd_out);
6f97dba0
AL		 1107}
1108
6f97dba0
AL		 1109/* init terminal so that we can grab keys */
1110static struct termios oldtty;
1111static int old_fd0_flags;
c88930a6 1112static bool stdio_in_use;
bb002513 1113static bool stdio_allow_signal;
6f97dba0
AL		 1114
1115static void term_exit(void)
1116{
1117 tcsetattr (0, TCSANOW, &oldtty);
1118 fcntl(0, F_SETFL, old_fd0_flags);
1119}
1120
bb002513 1121static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
6f97dba0
AL		 1122{
1123 struct termios tty;
1124
0369364b 1125 tty = oldtty;
bb002513
PB		 1126 if (!echo) {
1127 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
6f97dba0 1128 |INLCR|IGNCR|ICRNL|IXON);
bb002513
PB		 1129 tty.c_oflag |= OPOST;
1130 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
1131 tty.c_cflag &= ~(CSIZE|PARENB);
1132 tty.c_cflag |= CS8;
1133 tty.c_cc[VMIN] = 1;
1134 tty.c_cc[VTIME] = 0;
1135 }
bb002513 1136 if (!stdio_allow_signal)
6f97dba0 1137 tty.c_lflag &= ~ISIG;
6f97dba0
AL		 1138
1139 tcsetattr (0, TCSANOW, &tty);
6f97dba0
AL		 1140}
1141
1142static void qemu_chr_close_stdio(struct CharDriverState *chr)
1143{
1144 term_exit();
6f97dba0
AL		 1145 fd_chr_close(chr);
1146}
1147
7c358031 1148static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
6f97dba0
AL		 1149{
1150 CharDriverState *chr;
1151
ab51b1d5
MT		 1152 if (is_daemonized()) {
1153 error_report("cannot use stdio with -daemonize");
1154 return NULL;
1155 }
c88930a6
LL		 1156
1157 if (stdio_in_use) {
1158 error_report("cannot use stdio by multiple character devices");
1159 exit(1);
1160 }
1161
1162 stdio_in_use = true;
ed7a1540 1163 old_fd0_flags = fcntl(0, F_GETFL);
c88930a6 1164 tcgetattr(0, &oldtty);
4ff12bdb 1165 qemu_set_nonblock(0);
ed7a1540 1166 atexit(term_exit);
0369364b 1167
6f97dba0
AL		 1168 chr = qemu_chr_open_fd(0, 1);
1169 chr->chr_close = qemu_chr_close_stdio;
bb002513 1170 chr->chr_set_echo = qemu_chr_set_echo_stdio;
7c358031
GH		 1171 if (opts->has_signal) {
1172 stdio_allow_signal = opts->signal;
1173 }
15f31519 1174 qemu_chr_fe_set_echo(chr, false);
6f97dba0 1175
1f51470d 1176 return chr;
6f97dba0
AL		 1177}
1178
6f97dba0 1179#if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
a167ba50
AJ		 1180 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
1181 || defined(__GLIBC__)
6f97dba0 1182
e551498e
GH		 1183#define HAVE_CHARDEV_TTY 1
1184
6f97dba0 1185typedef struct {
093d3a20 1186 GIOChannel *fd;
6f97dba0 1187 int read_bytes;
9005b2a7
PB		 1188
1189 /* Protected by the CharDriverState chr_write_lock. */
1190 int connected;
8aa33caf 1191 guint timer_tag;
7b3621f4 1192 guint open_tag;
6f97dba0
AL		 1193} PtyCharDriver;
1194
9005b2a7 1195static void pty_chr_update_read_handler_locked(CharDriverState *chr);
6f97dba0
AL		 1196static void pty_chr_state(CharDriverState *chr, int connected);
1197
8aa33caf
AL		 1198static gboolean pty_chr_timer(gpointer opaque)
1199{
1200 struct CharDriverState *chr = opaque;
1201 PtyCharDriver *s = chr->opaque;
1202
9005b2a7 1203 qemu_mutex_lock(&chr->chr_write_lock);
79f20075 1204 s->timer_tag = 0;
7b3621f4 1205 s->open_tag = 0;
b0d768c3
GH		 1206 if (!s->connected) {
1207 /* Next poll ... */
9005b2a7 1208 pty_chr_update_read_handler_locked(chr);
b0d768c3 1209 }
9005b2a7 1210 qemu_mutex_unlock(&chr->chr_write_lock);
8aa33caf
AL		 1211 return FALSE;
1212}
1213
9005b2a7 1214/* Called with chr_write_lock held. */
8aa33caf
AL		 1215static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
1216{
1217 PtyCharDriver *s = chr->opaque;
1218
1219 if (s->timer_tag) {
1220 g_source_remove(s->timer_tag);
1221 s->timer_tag = 0;
1222 }
1223
1224 if (ms == 1000) {
1225 s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
1226 } else {
1227 s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
1228 }
1229}
1230
9005b2a7
PB		 1231/* Called with chr_write_lock held. */
1232static void pty_chr_update_read_handler_locked(CharDriverState *chr)
1bb7fe72
PB		 1233{
1234 PtyCharDriver *s = chr->opaque;
1235 GPollFD pfd;
1236
1237 pfd.fd = g_io_channel_unix_get_fd(s->fd);
1238 pfd.events = G_IO_OUT;
1239 pfd.revents = 0;
1240 g_poll(&pfd, 1, 0);
1241 if (pfd.revents & G_IO_HUP) {
1242 pty_chr_state(chr, 0);
1243 } else {
1244 pty_chr_state(chr, 1);
1245 }
1246}
1247
9005b2a7
PB		 1248static void pty_chr_update_read_handler(CharDriverState *chr)
1249{
1250 qemu_mutex_lock(&chr->chr_write_lock);
1251 pty_chr_update_read_handler_locked(chr);
1252 qemu_mutex_unlock(&chr->chr_write_lock);
1253}
1254
1255/* Called with chr_write_lock held. */
6f97dba0
AL		 1256static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1257{
1258 PtyCharDriver *s = chr->opaque;
1259
1260 if (!s->connected) {
1261 /* guest sends data, check for (re-)connect */
9005b2a7 1262 pty_chr_update_read_handler_locked(chr);
cf7330c7
ST		 1263 if (!s->connected) {
1264 return 0;
1265 }
6f97dba0 1266 }
684a096e 1267 return io_channel_send(s->fd, buf, len);
6f97dba0
AL		 1268}
1269
e6a87ed8
AL		 1270static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1271{
1272 PtyCharDriver *s = chr->opaque;
62c339c5
PB		 1273 if (!s->connected) {
1274 return NULL;
1275 }
e6a87ed8
AL		 1276 return g_io_create_watch(s->fd, cond);
1277}
1278
6f97dba0
AL		 1279static int pty_chr_read_poll(void *opaque)
1280{
1281 CharDriverState *chr = opaque;
1282 PtyCharDriver *s = chr->opaque;
1283
909cda12 1284 s->read_bytes = qemu_chr_be_can_write(chr);
6f97dba0
AL		 1285 return s->read_bytes;
1286}
1287
093d3a20 1288static gboolean pty_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 1289{
1290 CharDriverState *chr = opaque;
1291 PtyCharDriver *s = chr->opaque;
093d3a20 1292 gsize size, len;
9bd7854e 1293 uint8_t buf[READ_BUF_LEN];
093d3a20 1294 GIOStatus status;
6f97dba0
AL		 1295
1296 len = sizeof(buf);
1297 if (len > s->read_bytes)
1298 len = s->read_bytes;
cdbf6e16
PB		 1299 if (len == 0) {
1300 return TRUE;
1301 }
093d3a20
AL		 1302 status = g_io_channel_read_chars(s->fd, (gchar *)buf, len, &size, NULL);
1303 if (status != G_IO_STATUS_NORMAL) {
6f97dba0 1304 pty_chr_state(chr, 0);
093d3a20
AL		 1305 return FALSE;
1306 } else {
6f97dba0 1307 pty_chr_state(chr, 1);
fa5efccb 1308 qemu_chr_be_write(chr, buf, size);
6f97dba0 1309 }
093d3a20 1310 return TRUE;
6f97dba0
AL		 1311}
1312
7b3621f4
PB		 1313static gboolean qemu_chr_be_generic_open_func(gpointer opaque)
1314{
1315 CharDriverState *chr = opaque;
1316 PtyCharDriver *s = chr->opaque;
1317
1318 s->open_tag = 0;
1319 qemu_chr_be_generic_open(chr);
1320 return FALSE;
1321}
1322
9005b2a7 1323/* Called with chr_write_lock held. */
6f97dba0
AL		 1324static void pty_chr_state(CharDriverState *chr, int connected)
1325{
1326 PtyCharDriver *s = chr->opaque;
1327
1328 if (!connected) {
7b3621f4
PB		 1329 if (s->open_tag) {
1330 g_source_remove(s->open_tag);
1331 s->open_tag = 0;
1332 }
26da70c7 1333 remove_fd_in_watch(chr);
6f97dba0 1334 s->connected = 0;
6f97dba0
AL		 1335 /* (re-)connect poll interval for idle guests: once per second.
1336 * We check more frequently in case the guests sends data to
1337 * the virtual device linked to our pty. */
8aa33caf 1338 pty_chr_rearm_timer(chr, 1000);
6f97dba0 1339 } else {
85a67692
PB		 1340 if (s->timer_tag) {
1341 g_source_remove(s->timer_tag);
1342 s->timer_tag = 0;
1343 }
1344 if (!s->connected) {
7b3621f4 1345 g_assert(s->open_tag == 0);
85a67692 1346 s->connected = 1;
7b3621f4 1347 s->open_tag = g_idle_add(qemu_chr_be_generic_open_func, chr);
ac1b84dd
GH		 1348 }
1349 if (!chr->fd_in_tag) {
7ba9addc
AS		 1350 chr->fd_in_tag = io_add_watch_poll(s->fd, pty_chr_read_poll,
1351 pty_chr_read, chr);
85a67692 1352 }
6f97dba0
AL		 1353 }
1354}
1355
6f97dba0
AL		 1356static void pty_chr_close(struct CharDriverState *chr)
1357{
1358 PtyCharDriver *s = chr->opaque;
093d3a20 1359 int fd;
6f97dba0 1360
7b3621f4
PB		 1361 qemu_mutex_lock(&chr->chr_write_lock);
1362 pty_chr_state(chr, 0);
093d3a20
AL		 1363 fd = g_io_channel_unix_get_fd(s->fd);
1364 g_io_channel_unref(s->fd);
1365 close(fd);
8aa33caf
AL		 1366 if (s->timer_tag) {
1367 g_source_remove(s->timer_tag);
910b6368 1368 s->timer_tag = 0;
8aa33caf 1369 }
7b3621f4 1370 qemu_mutex_unlock(&chr->chr_write_lock);
7267c094 1371 g_free(s);
a425d23f 1372 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1373}
1374
e68c5958
GH		 1375static CharDriverState *qemu_chr_open_pty(const char *id,
1376 ChardevReturn *ret)
6f97dba0
AL		 1377{
1378 CharDriverState *chr;
1379 PtyCharDriver *s;
e68c5958 1380 int master_fd, slave_fd;
6f97dba0 1381 char pty_name[PATH_MAX];
6f97dba0 1382
4efeabbb
MT		 1383 master_fd = qemu_openpty_raw(&slave_fd, pty_name);
1384 if (master_fd < 0) {
1f51470d 1385 return NULL;
6f97dba0
AL		 1386 }
1387
6f97dba0
AL		 1388 close(slave_fd);
1389
db39fcf1 1390 chr = qemu_chr_alloc();
a4e26048 1391
4efeabbb
MT		 1392 chr->filename = g_strdup_printf("pty:%s", pty_name);
1393 ret->pty = g_strdup(pty_name);
e68c5958 1394 ret->has_pty = true;
58650218 1395
e68c5958 1396 fprintf(stderr, "char device redirected to %s (label %s)\n",
4efeabbb 1397 pty_name, id);
6f97dba0 1398
a4e26048 1399 s = g_malloc0(sizeof(PtyCharDriver));
6f97dba0
AL		 1400 chr->opaque = s;
1401 chr->chr_write = pty_chr_write;
1402 chr->chr_update_read_handler = pty_chr_update_read_handler;
1403 chr->chr_close = pty_chr_close;
e6a87ed8 1404 chr->chr_add_watch = pty_chr_add_watch;
bd5c51ee 1405 chr->explicit_be_open = true;
6f97dba0 1406
093d3a20 1407 s->fd = io_channel_from_fd(master_fd);
8aa33caf 1408 s->timer_tag = 0;
6f97dba0 1409
1f51470d 1410 return chr;
6f97dba0
AL		 1411}
1412
1413static void tty_serial_init(int fd, int speed,
1414 int parity, int data_bits, int stop_bits)
1415{
1416 struct termios tty;
1417 speed_t spd;
1418
1419#if 0
1420 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1421 speed, parity, data_bits, stop_bits);
1422#endif
1423 tcgetattr (fd, &tty);
1424
45eea13b
SW		 1425#define check_speed(val) if (speed <= val) { spd = B##val; break; }
1426 speed = speed * 10 / 11;
1427 do {
1428 check_speed(50);
1429 check_speed(75);
1430 check_speed(110);
1431 check_speed(134);
1432 check_speed(150);
1433 check_speed(200);
1434 check_speed(300);
1435 check_speed(600);
1436 check_speed(1200);
1437 check_speed(1800);
1438 check_speed(2400);
1439 check_speed(4800);
1440 check_speed(9600);
1441 check_speed(19200);
1442 check_speed(38400);
1443 /* Non-Posix values follow. They may be unsupported on some systems. */
1444 check_speed(57600);
1445 check_speed(115200);
1446#ifdef B230400
1447 check_speed(230400);
1448#endif
1449#ifdef B460800
1450 check_speed(460800);
1451#endif
1452#ifdef B500000
1453 check_speed(500000);
1454#endif
1455#ifdef B576000
1456 check_speed(576000);
1457#endif
1458#ifdef B921600
1459 check_speed(921600);
1460#endif
1461#ifdef B1000000
1462 check_speed(1000000);
1463#endif
1464#ifdef B1152000
1465 check_speed(1152000);
1466#endif
1467#ifdef B1500000
1468 check_speed(1500000);
1469#endif
1470#ifdef B2000000
1471 check_speed(2000000);
1472#endif
1473#ifdef B2500000
1474 check_speed(2500000);
1475#endif
1476#ifdef B3000000
1477 check_speed(3000000);
1478#endif
1479#ifdef B3500000
1480 check_speed(3500000);
1481#endif
1482#ifdef B4000000
1483 check_speed(4000000);
1484#endif
6f97dba0 1485 spd = B115200;
45eea13b 1486 } while (0);
6f97dba0
AL		 1487
1488 cfsetispeed(&tty, spd);
1489 cfsetospeed(&tty, spd);
1490
1491 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1492 |INLCR|IGNCR|ICRNL|IXON);
1493 tty.c_oflag |= OPOST;
1494 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1495 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1496 switch(data_bits) {
1497 default:
1498 case 8:
1499 tty.c_cflag |= CS8;
1500 break;
1501 case 7:
1502 tty.c_cflag |= CS7;
1503 break;
1504 case 6:
1505 tty.c_cflag |= CS6;
1506 break;
1507 case 5:
1508 tty.c_cflag |= CS5;
1509 break;
1510 }
1511 switch(parity) {
1512 default:
1513 case 'N':
1514 break;
1515 case 'E':
1516 tty.c_cflag |= PARENB;
1517 break;
1518 case 'O':
1519 tty.c_cflag |= PARENB | PARODD;
1520 break;
1521 }
1522 if (stop_bits == 2)
1523 tty.c_cflag |= CSTOPB;
1524
1525 tcsetattr (fd, TCSANOW, &tty);
1526}
1527
1528static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1529{
1530 FDCharDriver *s = chr->opaque;
1531
1532 switch(cmd) {
1533 case CHR_IOCTL_SERIAL_SET_PARAMS:
1534 {
1535 QEMUSerialSetParams *ssp = arg;
a29753f8
AL		 1536 tty_serial_init(g_io_channel_unix_get_fd(s->fd_in),
1537 ssp->speed, ssp->parity,
6f97dba0
AL		 1538 ssp->data_bits, ssp->stop_bits);
1539 }
1540 break;
1541 case CHR_IOCTL_SERIAL_SET_BREAK:
1542 {
1543 int enable = *(int *)arg;
a29753f8
AL		 1544 if (enable) {
1545 tcsendbreak(g_io_channel_unix_get_fd(s->fd_in), 1);
1546 }
6f97dba0
AL		 1547 }
1548 break;
1549 case CHR_IOCTL_SERIAL_GET_TIOCM:
1550 {
1551 int sarg = 0;
1552 int *targ = (int *)arg;
a29753f8 1553 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &sarg);
6f97dba0 1554 *targ = 0;
b4abdfa4 1555 if (sarg & TIOCM_CTS)
6f97dba0 1556 *targ |= CHR_TIOCM_CTS;
b4abdfa4 1557 if (sarg & TIOCM_CAR)
6f97dba0 1558 *targ |= CHR_TIOCM_CAR;
b4abdfa4 1559 if (sarg & TIOCM_DSR)
6f97dba0 1560 *targ |= CHR_TIOCM_DSR;
b4abdfa4 1561 if (sarg & TIOCM_RI)
6f97dba0 1562 *targ |= CHR_TIOCM_RI;
b4abdfa4 1563 if (sarg & TIOCM_DTR)
6f97dba0 1564 *targ |= CHR_TIOCM_DTR;
b4abdfa4 1565 if (sarg & TIOCM_RTS)
6f97dba0
AL		 1566 *targ |= CHR_TIOCM_RTS;
1567 }
1568 break;
1569 case CHR_IOCTL_SERIAL_SET_TIOCM:
1570 {
1571 int sarg = *(int *)arg;
1572 int targ = 0;
a29753f8 1573 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &targ);
b4abdfa4
AJ		 1574 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1575 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1576 if (sarg & CHR_TIOCM_CTS)
1577 targ |= TIOCM_CTS;
1578 if (sarg & CHR_TIOCM_CAR)
1579 targ |= TIOCM_CAR;
1580 if (sarg & CHR_TIOCM_DSR)
1581 targ |= TIOCM_DSR;
1582 if (sarg & CHR_TIOCM_RI)
1583 targ |= TIOCM_RI;
1584 if (sarg & CHR_TIOCM_DTR)
6f97dba0 1585 targ |= TIOCM_DTR;
b4abdfa4 1586 if (sarg & CHR_TIOCM_RTS)
6f97dba0 1587 targ |= TIOCM_RTS;
a29753f8 1588 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMSET, &targ);
6f97dba0
AL		 1589 }
1590 break;
1591 default:
1592 return -ENOTSUP;
1593 }
1594 return 0;
1595}
1596
4266a134
DA		 1597static void qemu_chr_close_tty(CharDriverState *chr)
1598{
1599 FDCharDriver *s = chr->opaque;
1600 int fd = -1;
1601
1602 if (s) {
a29753f8 1603 fd = g_io_channel_unix_get_fd(s->fd_in);
4266a134
DA		 1604 }
1605
1606 fd_chr_close(chr);
1607
1608 if (fd >= 0) {
1609 close(fd);
1610 }
1611}
1612
d59044ef
GH		 1613static CharDriverState *qemu_chr_open_tty_fd(int fd)
1614{
1615 CharDriverState *chr;
1616
1617 tty_serial_init(fd, 115200, 'N', 8, 1);
1618 chr = qemu_chr_open_fd(fd, fd);
1619 chr->chr_ioctl = tty_serial_ioctl;
1620 chr->chr_close = qemu_chr_close_tty;
1621 return chr;
1622}
6f97dba0
AL		 1623#endif /* __linux__ || __sun__ */
1624
1625#if defined(__linux__)
e551498e
GH		 1626
1627#define HAVE_CHARDEV_PARPORT 1
1628
6f97dba0
AL		 1629typedef struct {
1630 int fd;
1631 int mode;
1632} ParallelCharDriver;
1633
1634static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1635{
1636 if (s->mode != mode) {
1637 int m = mode;
1638 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1639 return 0;
1640 s->mode = mode;
1641 }
1642 return 1;
1643}
1644
1645static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1646{
1647 ParallelCharDriver *drv = chr->opaque;
1648 int fd = drv->fd;
1649 uint8_t b;
1650
1651 switch(cmd) {
1652 case CHR_IOCTL_PP_READ_DATA:
1653 if (ioctl(fd, PPRDATA, &b) < 0)
1654 return -ENOTSUP;
1655 *(uint8_t *)arg = b;
1656 break;
1657 case CHR_IOCTL_PP_WRITE_DATA:
1658 b = *(uint8_t *)arg;
1659 if (ioctl(fd, PPWDATA, &b) < 0)
1660 return -ENOTSUP;
1661 break;
1662 case CHR_IOCTL_PP_READ_CONTROL:
1663 if (ioctl(fd, PPRCONTROL, &b) < 0)
1664 return -ENOTSUP;
1665 /* Linux gives only the lowest bits, and no way to know data
1666 direction! For better compatibility set the fixed upper
1667 bits. */
1668 *(uint8_t *)arg = b | 0xc0;
1669 break;
1670 case CHR_IOCTL_PP_WRITE_CONTROL:
1671 b = *(uint8_t *)arg;
1672 if (ioctl(fd, PPWCONTROL, &b) < 0)
1673 return -ENOTSUP;
1674 break;
1675 case CHR_IOCTL_PP_READ_STATUS:
1676 if (ioctl(fd, PPRSTATUS, &b) < 0)
1677 return -ENOTSUP;
1678 *(uint8_t *)arg = b;
1679 break;
1680 case CHR_IOCTL_PP_DATA_DIR:
1681 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1682 return -ENOTSUP;
1683 break;
1684 case CHR_IOCTL_PP_EPP_READ_ADDR:
1685 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1686 struct ParallelIOArg *parg = arg;
1687 int n = read(fd, parg->buffer, parg->count);
1688 if (n != parg->count) {
1689 return -EIO;
1690 }
1691 }
1692 break;
1693 case CHR_IOCTL_PP_EPP_READ:
1694 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1695 struct ParallelIOArg *parg = arg;
1696 int n = read(fd, parg->buffer, parg->count);
1697 if (n != parg->count) {
1698 return -EIO;
1699 }
1700 }
1701 break;
1702 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1703 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1704 struct ParallelIOArg *parg = arg;
1705 int n = write(fd, parg->buffer, parg->count);
1706 if (n != parg->count) {
1707 return -EIO;
1708 }
1709 }
1710 break;
1711 case CHR_IOCTL_PP_EPP_WRITE:
1712 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1713 struct ParallelIOArg *parg = arg;
1714 int n = write(fd, parg->buffer, parg->count);
1715 if (n != parg->count) {
1716 return -EIO;
1717 }
1718 }
1719 break;
1720 default:
1721 return -ENOTSUP;
1722 }
1723 return 0;
1724}
1725
1726static void pp_close(CharDriverState *chr)
1727{
1728 ParallelCharDriver *drv = chr->opaque;
1729 int fd = drv->fd;
1730
1731 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1732 ioctl(fd, PPRELEASE);
1733 close(fd);
7267c094 1734 g_free(drv);
a425d23f 1735 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1736}
1737
88a946d3 1738static CharDriverState *qemu_chr_open_pp_fd(int fd)
6f97dba0
AL		 1739{
1740 CharDriverState *chr;
1741 ParallelCharDriver *drv;
6f97dba0
AL		 1742
1743 if (ioctl(fd, PPCLAIM) < 0) {
1744 close(fd);
1f51470d 1745 return NULL;
6f97dba0
AL		 1746 }
1747
7267c094 1748 drv = g_malloc0(sizeof(ParallelCharDriver));
6f97dba0
AL		 1749 drv->fd = fd;
1750 drv->mode = IEEE1284_MODE_COMPAT;
1751
db39fcf1 1752 chr = qemu_chr_alloc();
6f97dba0
AL		 1753 chr->chr_write = null_chr_write;
1754 chr->chr_ioctl = pp_ioctl;
1755 chr->chr_close = pp_close;
1756 chr->opaque = drv;
1757
1f51470d 1758 return chr;
6f97dba0
AL		 1759}
1760#endif /* __linux__ */
1761
a167ba50 1762#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
e551498e
GH		 1763
1764#define HAVE_CHARDEV_PARPORT 1
1765
6972f935
BS		 1766static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1767{
e0efb993 1768 int fd = (int)(intptr_t)chr->opaque;
6972f935
BS		 1769 uint8_t b;
1770
1771 switch(cmd) {
1772 case CHR_IOCTL_PP_READ_DATA:
1773 if (ioctl(fd, PPIGDATA, &b) < 0)
1774 return -ENOTSUP;
1775 *(uint8_t *)arg = b;
1776 break;
1777 case CHR_IOCTL_PP_WRITE_DATA:
1778 b = *(uint8_t *)arg;
1779 if (ioctl(fd, PPISDATA, &b) < 0)
1780 return -ENOTSUP;
1781 break;
1782 case CHR_IOCTL_PP_READ_CONTROL:
1783 if (ioctl(fd, PPIGCTRL, &b) < 0)
1784 return -ENOTSUP;
1785 *(uint8_t *)arg = b;
1786 break;
1787 case CHR_IOCTL_PP_WRITE_CONTROL:
1788 b = *(uint8_t *)arg;
1789 if (ioctl(fd, PPISCTRL, &b) < 0)
1790 return -ENOTSUP;
1791 break;
1792 case CHR_IOCTL_PP_READ_STATUS:
1793 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1794 return -ENOTSUP;
1795 *(uint8_t *)arg = b;
1796 break;
1797 default:
1798 return -ENOTSUP;
1799 }
1800 return 0;
1801}
1802
88a946d3 1803static CharDriverState *qemu_chr_open_pp_fd(int fd)
6972f935
BS		 1804{
1805 CharDriverState *chr;
6972f935 1806
db39fcf1 1807 chr = qemu_chr_alloc();
e0efb993 1808 chr->opaque = (void *)(intptr_t)fd;
6972f935
BS		 1809 chr->chr_write = null_chr_write;
1810 chr->chr_ioctl = pp_ioctl;
bd5c51ee 1811 chr->explicit_be_open = true;
1f51470d 1812 return chr;
6972f935
BS		 1813}
1814#endif
1815
6f97dba0
AL		 1816#else /* _WIN32 */
1817
1818typedef struct {
1819 int max_size;
1820 HANDLE hcom, hrecv, hsend;
9005b2a7 1821 OVERLAPPED orecv;
6f97dba0
AL		 1822 BOOL fpipe;
1823 DWORD len;
9005b2a7
PB		 1824
1825 /* Protected by the CharDriverState chr_write_lock. */
1826 OVERLAPPED osend;
6f97dba0
AL		 1827} WinCharState;
1828
db418a0a
FC		 1829typedef struct {
1830 HANDLE hStdIn;
1831 HANDLE hInputReadyEvent;
1832 HANDLE hInputDoneEvent;
1833 HANDLE hInputThread;
1834 uint8_t win_stdio_buf;
1835} WinStdioCharState;
1836
6f97dba0
AL		 1837#define NSENDBUF 2048
1838#define NRECVBUF 2048
1839#define MAXCONNECT 1
1840#define NTIMEOUT 5000
1841
1842static int win_chr_poll(void *opaque);
1843static int win_chr_pipe_poll(void *opaque);
1844
1845static void win_chr_close(CharDriverState *chr)
1846{
1847 WinCharState *s = chr->opaque;
1848
1849 if (s->hsend) {
1850 CloseHandle(s->hsend);
1851 s->hsend = NULL;
1852 }
1853 if (s->hrecv) {
1854 CloseHandle(s->hrecv);
1855 s->hrecv = NULL;
1856 }
1857 if (s->hcom) {
1858 CloseHandle(s->hcom);
1859 s->hcom = NULL;
1860 }
1861 if (s->fpipe)
1862 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1863 else
1864 qemu_del_polling_cb(win_chr_poll, chr);
793cbfb5 1865
a425d23f 1866 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1867}
1868
1869static int win_chr_init(CharDriverState *chr, const char *filename)
1870{
1871 WinCharState *s = chr->opaque;
1872 COMMCONFIG comcfg;
1873 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1874 COMSTAT comstat;
1875 DWORD size;
1876 DWORD err;
1877
1878 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1879 if (!s->hsend) {
1880 fprintf(stderr, "Failed CreateEvent\n");
1881 goto fail;
1882 }
1883 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1884 if (!s->hrecv) {
1885 fprintf(stderr, "Failed CreateEvent\n");
1886 goto fail;
1887 }
1888
1889 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1890 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1891 if (s->hcom == INVALID_HANDLE_VALUE) {
1892 fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
1893 s->hcom = NULL;
1894 goto fail;
1895 }
1896
1897 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
1898 fprintf(stderr, "Failed SetupComm\n");
1899 goto fail;
1900 }
1901
1902 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1903 size = sizeof(COMMCONFIG);
1904 GetDefaultCommConfig(filename, &comcfg, &size);
1905 comcfg.dcb.DCBlength = sizeof(DCB);
1906 CommConfigDialog(filename, NULL, &comcfg);
1907
1908 if (!SetCommState(s->hcom, &comcfg.dcb)) {
1909 fprintf(stderr, "Failed SetCommState\n");
1910 goto fail;
1911 }
1912
1913 if (!SetCommMask(s->hcom, EV_ERR)) {
1914 fprintf(stderr, "Failed SetCommMask\n");
1915 goto fail;
1916 }
1917
1918 cto.ReadIntervalTimeout = MAXDWORD;
1919 if (!SetCommTimeouts(s->hcom, &cto)) {
1920 fprintf(stderr, "Failed SetCommTimeouts\n");
1921 goto fail;
1922 }
1923
1924 if (!ClearCommError(s->hcom, &err, &comstat)) {
1925 fprintf(stderr, "Failed ClearCommError\n");
1926 goto fail;
1927 }
1928 qemu_add_polling_cb(win_chr_poll, chr);
1929 return 0;
1930
1931 fail:
1932 win_chr_close(chr);
1933 return -1;
1934}
1935
9005b2a7 1936/* Called with chr_write_lock held. */
6f97dba0
AL		 1937static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1938{
1939 WinCharState *s = chr->opaque;
1940 DWORD len, ret, size, err;
1941
1942 len = len1;
1943 ZeroMemory(&s->osend, sizeof(s->osend));
1944 s->osend.hEvent = s->hsend;
1945 while (len > 0) {
1946 if (s->hsend)
1947 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1948 else
1949 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1950 if (!ret) {
1951 err = GetLastError();
1952 if (err == ERROR_IO_PENDING) {
1953 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1954 if (ret) {
1955 buf += size;
1956 len -= size;
1957 } else {
1958 break;
1959 }
1960 } else {
1961 break;
1962 }
1963 } else {
1964 buf += size;
1965 len -= size;
1966 }
1967 }
1968 return len1 - len;
1969}
1970
1971static int win_chr_read_poll(CharDriverState *chr)
1972{
1973 WinCharState *s = chr->opaque;
1974
909cda12 1975 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 1976 return s->max_size;
1977}
1978
1979static void win_chr_readfile(CharDriverState *chr)
1980{
1981 WinCharState *s = chr->opaque;
1982 int ret, err;
9bd7854e 1983 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 1984 DWORD size;
1985
1986 ZeroMemory(&s->orecv, sizeof(s->orecv));
1987 s->orecv.hEvent = s->hrecv;
1988 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
1989 if (!ret) {
1990 err = GetLastError();
1991 if (err == ERROR_IO_PENDING) {
1992 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
1993 }
1994 }
1995
1996 if (size > 0) {
fa5efccb 1997 qemu_chr_be_write(chr, buf, size);
6f97dba0
AL		 1998 }
1999}
2000
2001static void win_chr_read(CharDriverState *chr)
2002{
2003 WinCharState *s = chr->opaque;
2004
2005 if (s->len > s->max_size)
2006 s->len = s->max_size;
2007 if (s->len == 0)
2008 return;
2009
2010 win_chr_readfile(chr);
2011}
2012
2013static int win_chr_poll(void *opaque)
2014{
2015 CharDriverState *chr = opaque;
2016 WinCharState *s = chr->opaque;
2017 COMSTAT status;
2018 DWORD comerr;
2019
2020 ClearCommError(s->hcom, &comerr, &status);
2021 if (status.cbInQue > 0) {
2022 s->len = status.cbInQue;
2023 win_chr_read_poll(chr);
2024 win_chr_read(chr);
2025 return 1;
2026 }
2027 return 0;
2028}
2029
d59044ef 2030static CharDriverState *qemu_chr_open_win_path(const char *filename)
6f97dba0
AL		 2031{
2032 CharDriverState *chr;
2033 WinCharState *s;
2034
db39fcf1 2035 chr = qemu_chr_alloc();
7267c094 2036 s = g_malloc0(sizeof(WinCharState));
6f97dba0
AL		 2037 chr->opaque = s;
2038 chr->chr_write = win_chr_write;
2039 chr->chr_close = win_chr_close;
2040
2041 if (win_chr_init(chr, filename) < 0) {
2e02e18b
SW		 2042 g_free(s);
2043 g_free(chr);
1f51470d 2044 return NULL;
6f97dba0 2045 }
1f51470d 2046 return chr;
6f97dba0
AL		 2047}
2048
2049static int win_chr_pipe_poll(void *opaque)
2050{
2051 CharDriverState *chr = opaque;
2052 WinCharState *s = chr->opaque;
2053 DWORD size;
2054
2055 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
2056 if (size > 0) {
2057 s->len = size;
2058 win_chr_read_poll(chr);
2059 win_chr_read(chr);
2060 return 1;
2061 }
2062 return 0;
2063}
2064
2065static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
2066{
2067 WinCharState *s = chr->opaque;
2068 OVERLAPPED ov;
2069 int ret;
2070 DWORD size;
9f781168 2071 char openname[CHR_MAX_FILENAME_SIZE];
6f97dba0
AL		 2072
2073 s->fpipe = TRUE;
2074
2075 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
2076 if (!s->hsend) {
2077 fprintf(stderr, "Failed CreateEvent\n");
2078 goto fail;
2079 }
2080 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
2081 if (!s->hrecv) {
2082 fprintf(stderr, "Failed CreateEvent\n");
2083 goto fail;
2084 }
2085
2086 snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
2087 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
2088 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
2089 PIPE_WAIT,
2090 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
2091 if (s->hcom == INVALID_HANDLE_VALUE) {
2092 fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
2093 s->hcom = NULL;
2094 goto fail;
2095 }
2096
2097 ZeroMemory(&ov, sizeof(ov));
2098 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
2099 ret = ConnectNamedPipe(s->hcom, &ov);
2100 if (ret) {
2101 fprintf(stderr, "Failed ConnectNamedPipe\n");
2102 goto fail;
2103 }
2104
2105 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
2106 if (!ret) {
2107 fprintf(stderr, "Failed GetOverlappedResult\n");
2108 if (ov.hEvent) {
2109 CloseHandle(ov.hEvent);
2110 ov.hEvent = NULL;
2111 }
2112 goto fail;
2113 }
2114
2115 if (ov.hEvent) {
2116 CloseHandle(ov.hEvent);
2117 ov.hEvent = NULL;
2118 }
2119 qemu_add_polling_cb(win_chr_pipe_poll, chr);
2120 return 0;
2121
2122 fail:
2123 win_chr_close(chr);
2124 return -1;
2125}
2126
2127
548cbb36 2128static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
6f97dba0 2129{
548cbb36 2130 const char *filename = opts->device;
6f97dba0
AL		 2131 CharDriverState *chr;
2132 WinCharState *s;
2133
db39fcf1 2134 chr = qemu_chr_alloc();
7267c094 2135 s = g_malloc0(sizeof(WinCharState));
6f97dba0
AL		 2136 chr->opaque = s;
2137 chr->chr_write = win_chr_write;
2138 chr->chr_close = win_chr_close;
2139
2140 if (win_chr_pipe_init(chr, filename) < 0) {
2e02e18b
SW		 2141 g_free(s);
2142 g_free(chr);
1f51470d 2143 return NULL;
6f97dba0 2144 }
1f51470d 2145 return chr;
6f97dba0
AL		 2146}
2147
1f51470d 2148static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
6f97dba0
AL		 2149{
2150 CharDriverState *chr;
2151 WinCharState *s;
2152
db39fcf1 2153 chr = qemu_chr_alloc();
7267c094 2154 s = g_malloc0(sizeof(WinCharState));
6f97dba0
AL		 2155 s->hcom = fd_out;
2156 chr->opaque = s;
2157 chr->chr_write = win_chr_write;
1f51470d 2158 return chr;
6f97dba0
AL		 2159}
2160
d9ac374f 2161static CharDriverState *qemu_chr_open_win_con(void)
6f97dba0 2162{
1f51470d 2163 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
6f97dba0
AL		 2164}
2165
db418a0a
FC		 2166static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
2167{
2168 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
2169 DWORD dwSize;
2170 int len1;
2171
2172 len1 = len;
2173
2174 while (len1 > 0) {
2175 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
2176 break;
2177 }
2178 buf += dwSize;
2179 len1 -= dwSize;
2180 }
2181
2182 return len - len1;
2183}
2184
2185static void win_stdio_wait_func(void *opaque)
2186{
2187 CharDriverState *chr = opaque;
2188 WinStdioCharState *stdio = chr->opaque;
2189 INPUT_RECORD buf[4];
2190 int ret;
2191 DWORD dwSize;
2192 int i;
2193
dff7424d 2194 ret = ReadConsoleInput(stdio->hStdIn, buf, ARRAY_SIZE(buf), &dwSize);
db418a0a
FC		 2195
2196 if (!ret) {
2197 /* Avoid error storm */
2198 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2199 return;
2200 }
2201
2202 for (i = 0; i < dwSize; i++) {
2203 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
2204
2205 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
2206 int j;
2207 if (kev->uChar.AsciiChar != 0) {
2208 for (j = 0; j < kev->wRepeatCount; j++) {
2209 if (qemu_chr_be_can_write(chr)) {
2210 uint8_t c = kev->uChar.AsciiChar;
2211 qemu_chr_be_write(chr, &c, 1);
2212 }
2213 }
2214 }
2215 }
2216 }
2217}
2218
2219static DWORD WINAPI win_stdio_thread(LPVOID param)
2220{
2221 CharDriverState *chr = param;
2222 WinStdioCharState *stdio = chr->opaque;
2223 int ret;
2224 DWORD dwSize;
2225
2226 while (1) {
2227
2228 /* Wait for one byte */
2229 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
2230
2231 /* Exit in case of error, continue if nothing read */
2232 if (!ret) {
2233 break;
2234 }
2235 if (!dwSize) {
2236 continue;
2237 }
2238
2239 /* Some terminal emulator returns \r\n for Enter, just pass \n */
2240 if (stdio->win_stdio_buf == '\r') {
2241 continue;
2242 }
2243
2244 /* Signal the main thread and wait until the byte was eaten */
2245 if (!SetEvent(stdio->hInputReadyEvent)) {
2246 break;
2247 }
2248 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
2249 != WAIT_OBJECT_0) {
2250 break;
2251 }
2252 }
2253
2254 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2255 return 0;
2256}
2257
2258static void win_stdio_thread_wait_func(void *opaque)
2259{
2260 CharDriverState *chr = opaque;
2261 WinStdioCharState *stdio = chr->opaque;
2262
2263 if (qemu_chr_be_can_write(chr)) {
2264 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
2265 }
2266
2267 SetEvent(stdio->hInputDoneEvent);
2268}
2269
2270static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
2271{
2272 WinStdioCharState *stdio = chr->opaque;
2273 DWORD dwMode = 0;
2274
2275 GetConsoleMode(stdio->hStdIn, &dwMode);
2276
2277 if (echo) {
2278 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
2279 } else {
2280 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
2281 }
2282}
2283
2284static void win_stdio_close(CharDriverState *chr)
2285{
2286 WinStdioCharState *stdio = chr->opaque;
2287
2288 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
2289 CloseHandle(stdio->hInputReadyEvent);
2290 }
2291 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
2292 CloseHandle(stdio->hInputDoneEvent);
2293 }
2294 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
2295 TerminateThread(stdio->hInputThread, 0);
2296 }
2297
2298 g_free(chr->opaque);
2299 g_free(chr);
db418a0a
FC		 2300}
2301
7c358031 2302static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
db418a0a
FC		 2303{
2304 CharDriverState *chr;
2305 WinStdioCharState *stdio;
2306 DWORD dwMode;
2307 int is_console = 0;
2308
db39fcf1 2309 chr = qemu_chr_alloc();
db418a0a
FC		 2310 stdio = g_malloc0(sizeof(WinStdioCharState));
2311
2312 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
2313 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
2314 fprintf(stderr, "cannot open stdio: invalid handle\n");
2315 exit(1);
2316 }
2317
2318 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
2319
2320 chr->opaque = stdio;
2321 chr->chr_write = win_stdio_write;
2322 chr->chr_close = win_stdio_close;
2323
ed7a1540
AL		 2324 if (is_console) {
2325 if (qemu_add_wait_object(stdio->hStdIn,
2326 win_stdio_wait_func, chr)) {
2327 fprintf(stderr, "qemu_add_wait_object: failed\n");
2328 }
2329 } else {
2330 DWORD dwId;
2331
2332 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2333 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2334 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
2335 chr, 0, &dwId);
2336
2337 if (stdio->hInputThread == INVALID_HANDLE_VALUE
2338 || stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
2339 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
2340 fprintf(stderr, "cannot create stdio thread or event\n");
2341 exit(1);
2342 }
2343 if (qemu_add_wait_object(stdio->hInputReadyEvent,
2344 win_stdio_thread_wait_func, chr)) {
2345 fprintf(stderr, "qemu_add_wait_object: failed\n");
db418a0a
FC		 2346 }
2347 }
2348
2349 dwMode |= ENABLE_LINE_INPUT;
2350
ed7a1540 2351 if (is_console) {
db418a0a
FC		 2352 /* set the terminal in raw mode */
2353 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2354 dwMode |= ENABLE_PROCESSED_INPUT;
2355 }
2356
2357 SetConsoleMode(stdio->hStdIn, dwMode);
2358
2359 chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
2360 qemu_chr_fe_set_echo(chr, false);
2361
1f51470d 2362 return chr;
db418a0a 2363}
6f97dba0
AL		 2364#endif /* !_WIN32 */
2365
5ab8211b 2366
6f97dba0
AL		 2367/***********************************************************/
2368/* UDP Net console */
2369
2370typedef struct {
2371 int fd;
76a9644b 2372 GIOChannel *chan;
9bd7854e 2373 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2374 int bufcnt;
2375 int bufptr;
2376 int max_size;
2377} NetCharDriver;
2378
9005b2a7 2379/* Called with chr_write_lock held. */
6f97dba0
AL		 2380static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2381{
2382 NetCharDriver *s = chr->opaque;
76a9644b
AL		 2383 gsize bytes_written;
2384 GIOStatus status;
2385
2386 status = g_io_channel_write_chars(s->chan, (const gchar *)buf, len, &bytes_written, NULL);
2387 if (status == G_IO_STATUS_EOF) {
2388 return 0;
2389 } else if (status != G_IO_STATUS_NORMAL) {
2390 return -1;
2391 }
6f97dba0 2392
76a9644b 2393 return bytes_written;
6f97dba0
AL		 2394}
2395
2396static int udp_chr_read_poll(void *opaque)
2397{
2398 CharDriverState *chr = opaque;
2399 NetCharDriver *s = chr->opaque;
2400
909cda12 2401 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2402
2403 /* If there were any stray characters in the queue process them
2404 * first
2405 */
2406 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
fa5efccb 2407 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
6f97dba0 2408 s->bufptr++;
909cda12 2409 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2410 }
2411 return s->max_size;
2412}
2413
76a9644b 2414static gboolean udp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 2415{
2416 CharDriverState *chr = opaque;
2417 NetCharDriver *s = chr->opaque;
76a9644b
AL		 2418 gsize bytes_read = 0;
2419 GIOStatus status;
6f97dba0 2420
cdbf6e16
PB		 2421 if (s->max_size == 0) {
2422 return TRUE;
2423 }
76a9644b
AL		 2424 status = g_io_channel_read_chars(s->chan, (gchar *)s->buf, sizeof(s->buf),
2425 &bytes_read, NULL);
2426 s->bufcnt = bytes_read;
6f97dba0 2427 s->bufptr = s->bufcnt;
76a9644b 2428 if (status != G_IO_STATUS_NORMAL) {
26da70c7 2429 remove_fd_in_watch(chr);
76a9644b
AL		 2430 return FALSE;
2431 }
6f97dba0
AL		 2432
2433 s->bufptr = 0;
2434 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
fa5efccb 2435 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
6f97dba0 2436 s->bufptr++;
909cda12 2437 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0 2438 }
76a9644b
AL		 2439
2440 return TRUE;
6f97dba0
AL		 2441}
2442
2443static void udp_chr_update_read_handler(CharDriverState *chr)
2444{
2445 NetCharDriver *s = chr->opaque;
2446
26da70c7 2447 remove_fd_in_watch(chr);
76a9644b 2448 if (s->chan) {
7ba9addc
AS		 2449 chr->fd_in_tag = io_add_watch_poll(s->chan, udp_chr_read_poll,
2450 udp_chr_read, chr);
6f97dba0
AL		 2451 }
2452}
2453
819f56b7
AL		 2454static void udp_chr_close(CharDriverState *chr)
2455{
2456 NetCharDriver *s = chr->opaque;
26da70c7
AS		 2457
2458 remove_fd_in_watch(chr);
76a9644b
AL		 2459 if (s->chan) {
2460 g_io_channel_unref(s->chan);
819f56b7
AL		 2461 closesocket(s->fd);
2462 }
7267c094 2463 g_free(s);
a425d23f 2464 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
819f56b7
AL		 2465}
2466
3ecc059d 2467static CharDriverState *qemu_chr_open_udp_fd(int fd)
6f97dba0
AL		 2468{
2469 CharDriverState *chr = NULL;
2470 NetCharDriver *s = NULL;
6f97dba0 2471
db39fcf1 2472 chr = qemu_chr_alloc();
7267c094 2473 s = g_malloc0(sizeof(NetCharDriver));
6f97dba0 2474
6f97dba0 2475 s->fd = fd;
76a9644b 2476 s->chan = io_channel_from_socket(s->fd);
6f97dba0
AL		 2477 s->bufcnt = 0;
2478 s->bufptr = 0;
2479 chr->opaque = s;
2480 chr->chr_write = udp_chr_write;
2481 chr->chr_update_read_handler = udp_chr_update_read_handler;
819f56b7 2482 chr->chr_close = udp_chr_close;
bd5c51ee
MR		 2483 /* be isn't opened until we get a connection */
2484 chr->explicit_be_open = true;
1f51470d 2485 return chr;
3ecc059d 2486}
6f97dba0 2487
6f97dba0
AL		 2488/***********************************************************/
2489/* TCP Net console */
2490
2491typedef struct {
2ea5a7af
AL		 2492
2493 GIOChannel *chan, *listen_chan;
7ba9addc 2494 guint listen_tag;
6f97dba0
AL		 2495 int fd, listen_fd;
2496 int connected;
2497 int max_size;
2498 int do_telnetopt;
2499 int do_nodelay;
2500 int is_unix;
c76bf6bb
NN		 2501 int *read_msgfds;
2502 int read_msgfds_num;
d39aac7a
NN		 2503 int *write_msgfds;
2504 int write_msgfds_num;
cfb429cb
CM		 2505
2506 SocketAddress *addr;
2507 bool is_listen;
2508 bool is_telnet;
5dd1f02b
CM		 2509
2510 guint reconnect_timer;
2511 int64_t reconnect_time;
5008e5b7 2512 bool connect_err_reported;
6f97dba0
AL		 2513} TCPCharDriver;
2514
5dd1f02b
CM		 2515static gboolean socket_reconnect_timeout(gpointer opaque);
2516
2517static void qemu_chr_socket_restart_timer(CharDriverState *chr)
2518{
2519 TCPCharDriver *s = chr->opaque;
2520 assert(s->connected == 0);
2521 s->reconnect_timer = g_timeout_add_seconds(s->reconnect_time,
2522 socket_reconnect_timeout, chr);
2523}
2524
5008e5b7
CM		 2525static void check_report_connect_error(CharDriverState *chr,
2526 Error *err)
2527{
2528 TCPCharDriver *s = chr->opaque;
2529
2530 if (!s->connect_err_reported) {
2531 error_report("Unable to connect character device %s: %s",
2532 chr->label, error_get_pretty(err));
2533 s->connect_err_reported = true;
2534 }
2535 qemu_chr_socket_restart_timer(chr);
2536}
2537
2ea5a7af 2538static gboolean tcp_chr_accept(GIOChannel *chan, GIOCondition cond, void *opaque);
6f97dba0 2539
d39aac7a
NN		 2540#ifndef _WIN32
2541static int unix_send_msgfds(CharDriverState *chr, const uint8_t *buf, int len)
2542{
2543 TCPCharDriver *s = chr->opaque;
2544 struct msghdr msgh;
2545 struct iovec iov;
2546 int r;
2547
2548 size_t fd_size = s->write_msgfds_num * sizeof(int);
2549 char control[CMSG_SPACE(fd_size)];
2550 struct cmsghdr *cmsg;
2551
2552 memset(&msgh, 0, sizeof(msgh));
2553 memset(control, 0, sizeof(control));
2554
2555 /* set the payload */
2556 iov.iov_base = (uint8_t *) buf;
2557 iov.iov_len = len;
2558
2559 msgh.msg_iov = &iov;
2560 msgh.msg_iovlen = 1;
2561
2562 msgh.msg_control = control;
2563 msgh.msg_controllen = sizeof(control);
2564
2565 cmsg = CMSG_FIRSTHDR(&msgh);
2566
2567 cmsg->cmsg_len = CMSG_LEN(fd_size);
2568 cmsg->cmsg_level = SOL_SOCKET;
2569 cmsg->cmsg_type = SCM_RIGHTS;
2570 memcpy(CMSG_DATA(cmsg), s->write_msgfds, fd_size);
2571
2572 do {
2573 r = sendmsg(s->fd, &msgh, 0);
2574 } while (r < 0 && errno == EINTR);
2575
2576 /* free the written msgfds, no matter what */
2577 if (s->write_msgfds_num) {
2578 g_free(s->write_msgfds);
2579 s->write_msgfds = 0;
2580 s->write_msgfds_num = 0;
2581 }
2582
2583 return r;
2584}
2585#endif
2586
9005b2a7 2587/* Called with chr_write_lock held. */
6f97dba0
AL		 2588static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2589{
2590 TCPCharDriver *s = chr->opaque;
2591 if (s->connected) {
d39aac7a
NN		 2592#ifndef _WIN32
2593 if (s->is_unix && s->write_msgfds_num) {
2594 return unix_send_msgfds(chr, buf, len);
2595 } else
2596#endif
2597 {
2598 return io_channel_send(s->chan, buf, len);
2599 }
455aa1e0 2600 } else {
6db0fdce 2601 /* XXX: indicate an error ? */
455aa1e0 2602 return len;
6f97dba0
AL		 2603 }
2604}
2605
2606static int tcp_chr_read_poll(void *opaque)
2607{
2608 CharDriverState *chr = opaque;
2609 TCPCharDriver *s = chr->opaque;
2610 if (!s->connected)
2611 return 0;
909cda12 2612 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2613 return s->max_size;
2614}
2615
2616#define IAC 255
2617#define IAC_BREAK 243
2618static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
2619 TCPCharDriver *s,
2620 uint8_t *buf, int *size)
2621{
2622 /* Handle any telnet client's basic IAC options to satisfy char by
2623 * char mode with no echo. All IAC options will be removed from
2624 * the buf and the do_telnetopt variable will be used to track the
2625 * state of the width of the IAC information.
2626 *
2627 * IAC commands come in sets of 3 bytes with the exception of the
2628 * "IAC BREAK" command and the double IAC.
2629 */
2630
2631 int i;
2632 int j = 0;
2633
2634 for (i = 0; i < *size; i++) {
2635 if (s->do_telnetopt > 1) {
2636 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2637 /* Double IAC means send an IAC */
2638 if (j != i)
2639 buf[j] = buf[i];
2640 j++;
2641 s->do_telnetopt = 1;
2642 } else {
2643 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2644 /* Handle IAC break commands by sending a serial break */
a425d23f 2645 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
6f97dba0
AL		 2646 s->do_telnetopt++;
2647 }
2648 s->do_telnetopt++;
2649 }
2650 if (s->do_telnetopt >= 4) {
2651 s->do_telnetopt = 1;
2652 }
2653 } else {
2654 if ((unsigned char)buf[i] == IAC) {
2655 s->do_telnetopt = 2;
2656 } else {
2657 if (j != i)
2658 buf[j] = buf[i];
2659 j++;
2660 }
2661 }
2662 }
2663 *size = j;
2664}
2665
c76bf6bb 2666static int tcp_get_msgfds(CharDriverState *chr, int *fds, int num)
7d174059
MM		 2667{
2668 TCPCharDriver *s = chr->opaque;
c76bf6bb
NN		 2669 int to_copy = (s->read_msgfds_num < num) ? s->read_msgfds_num : num;
2670
2671 if (to_copy) {
d2fc39b4
SH		 2672 int i;
2673
c76bf6bb
NN		 2674 memcpy(fds, s->read_msgfds, to_copy * sizeof(int));
2675
d2fc39b4
SH		 2676 /* Close unused fds */
2677 for (i = to_copy; i < s->read_msgfds_num; i++) {
2678 close(s->read_msgfds[i]);
2679 }
2680
c76bf6bb
NN		 2681 g_free(s->read_msgfds);
2682 s->read_msgfds = 0;
2683 s->read_msgfds_num = 0;
2684 }
2685
2686 return to_copy;
7d174059
MM		 2687}
2688
d39aac7a
NN		 2689static int tcp_set_msgfds(CharDriverState *chr, int *fds, int num)
2690{
2691 TCPCharDriver *s = chr->opaque;
2692
2693 /* clear old pending fd array */
2694 if (s->write_msgfds) {
2695 g_free(s->write_msgfds);
2696 }
2697
2698 if (num) {
2699 s->write_msgfds = g_malloc(num * sizeof(int));
2700 memcpy(s->write_msgfds, fds, num * sizeof(int));
2701 }
2702
2703 s->write_msgfds_num = num;
2704
2705 return 0;
2706}
2707
73bcc2ac 2708#ifndef _WIN32
7d174059
MM		 2709static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
2710{
2711 TCPCharDriver *s = chr->opaque;
2712 struct cmsghdr *cmsg;
2713
2714 for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
c76bf6bb 2715 int fd_size, i;
7d174059 2716
c76bf6bb 2717 if (cmsg->cmsg_len < CMSG_LEN(sizeof(int)) ||
7d174059 2718 cmsg->cmsg_level != SOL_SOCKET ||
c76bf6bb 2719 cmsg->cmsg_type != SCM_RIGHTS) {
7d174059 2720 continue;
c76bf6bb 2721 }
7d174059 2722
c76bf6bb
NN		 2723 fd_size = cmsg->cmsg_len - CMSG_LEN(0);
2724
2725 if (!fd_size) {
7d174059 2726 continue;
c76bf6bb 2727 }
7d174059 2728
c76bf6bb
NN		 2729 /* close and clean read_msgfds */
2730 for (i = 0; i < s->read_msgfds_num; i++) {
2731 close(s->read_msgfds[i]);
2732 }
9b938c72 2733
c76bf6bb
NN		 2734 if (s->read_msgfds_num) {
2735 g_free(s->read_msgfds);
2736 }
2737
2738 s->read_msgfds_num = fd_size / sizeof(int);
2739 s->read_msgfds = g_malloc(fd_size);
2740 memcpy(s->read_msgfds, CMSG_DATA(cmsg), fd_size);
2741
2742 for (i = 0; i < s->read_msgfds_num; i++) {
2743 int fd = s->read_msgfds[i];
2744 if (fd < 0) {
2745 continue;
2746 }
2747
2748 /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
2749 qemu_set_block(fd);
2750
2751 #ifndef MSG_CMSG_CLOEXEC
2752 qemu_set_cloexec(fd);
2753 #endif
2754 }
7d174059
MM		 2755 }
2756}
2757
9977c894
MM		 2758static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2759{
2760 TCPCharDriver *s = chr->opaque;
7cba04f6 2761 struct msghdr msg = { NULL, };
9977c894 2762 struct iovec iov[1];
7d174059
MM		 2763 union {
2764 struct cmsghdr cmsg;
2765 char control[CMSG_SPACE(sizeof(int))];
2766 } msg_control;
06138651 2767 int flags = 0;
7d174059 2768 ssize_t ret;
9977c894
MM		 2769
2770 iov[0].iov_base = buf;
2771 iov[0].iov_len = len;
2772
2773 msg.msg_iov = iov;
2774 msg.msg_iovlen = 1;
7d174059
MM		 2775 msg.msg_control = &msg_control;
2776 msg.msg_controllen = sizeof(msg_control);
2777
06138651
CB		 2778#ifdef MSG_CMSG_CLOEXEC
2779 flags |= MSG_CMSG_CLOEXEC;
2780#endif
2781 ret = recvmsg(s->fd, &msg, flags);
2782 if (ret > 0 && s->is_unix) {
7d174059 2783 unix_process_msgfd(chr, &msg);
06138651 2784 }
9977c894 2785
7d174059 2786 return ret;
9977c894
MM		 2787}
2788#else
2789static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2790{
2791 TCPCharDriver *s = chr->opaque;
00aa0040 2792 return qemu_recv(s->fd, buf, len, 0);
9977c894
MM		 2793}
2794#endif
2795
d3cc5bc4
AS		 2796static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
2797{
2798 TCPCharDriver *s = chr->opaque;
2799 return g_io_create_watch(s->chan, cond);
2800}
2801
7b0bfdf5
NN		 2802static void tcp_chr_disconnect(CharDriverState *chr)
2803{
2804 TCPCharDriver *s = chr->opaque;
2805
2806 s->connected = 0;
2807 if (s->listen_chan) {
2808 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN,
2809 tcp_chr_accept, chr);
2810 }
2811 remove_fd_in_watch(chr);
2812 g_io_channel_unref(s->chan);
2813 s->chan = NULL;
2814 closesocket(s->fd);
2815 s->fd = -1;
16cc4ffe
CM		 2816 SocketAddress_to_str(chr->filename, CHR_MAX_FILENAME_SIZE,
2817 "disconnected:", s->addr, s->is_listen, s->is_telnet);
7b0bfdf5 2818 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
5dd1f02b
CM		 2819 if (s->reconnect_time) {
2820 qemu_chr_socket_restart_timer(chr);
2821 }
7b0bfdf5
NN		 2822}
2823
2ea5a7af 2824static gboolean tcp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 2825{
2826 CharDriverState *chr = opaque;
2827 TCPCharDriver *s = chr->opaque;
9bd7854e 2828 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2829 int len, size;
2830
812c1057
KB		 2831 if (cond & G_IO_HUP) {
2832 /* connection closed */
2833 tcp_chr_disconnect(chr);
2834 return TRUE;
2835 }
2836
2ea5a7af 2837 if (!s->connected || s->max_size <= 0) {
cdbf6e16 2838 return TRUE;
2ea5a7af 2839 }
6f97dba0
AL		 2840 len = sizeof(buf);
2841 if (len > s->max_size)
2842 len = s->max_size;
9977c894 2843 size = tcp_chr_recv(chr, (void *)buf, len);
6f97dba0
AL		 2844 if (size == 0) {
2845 /* connection closed */
7b0bfdf5 2846 tcp_chr_disconnect(chr);
6f97dba0
AL		 2847 } else if (size > 0) {
2848 if (s->do_telnetopt)
2849 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2850 if (size > 0)
fa5efccb 2851 qemu_chr_be_write(chr, buf, size);
6f97dba0 2852 }
2ea5a7af
AL		 2853
2854 return TRUE;
6f97dba0
AL		 2855}
2856
7b0bfdf5
NN		 2857static int tcp_chr_sync_read(CharDriverState *chr, const uint8_t *buf, int len)
2858{
2859 TCPCharDriver *s = chr->opaque;
2860 int size;
2861
2862 if (!s->connected) {
2863 return 0;
2864 }
2865
2866 size = tcp_chr_recv(chr, (void *) buf, len);
2867 if (size == 0) {
2868 /* connection closed */
2869 tcp_chr_disconnect(chr);
2870 }
2871
2872 return size;
2873}
2874
68c18d1c
BS		 2875#ifndef _WIN32
2876CharDriverState *qemu_chr_open_eventfd(int eventfd)
2877{
e9d21c43
DM		 2878 CharDriverState *chr = qemu_chr_open_fd(eventfd, eventfd);
2879
2880 if (chr) {
2881 chr->avail_connections = 1;
2882 }
2883
2884 return chr;
6cbf4c8c 2885}
68c18d1c 2886#endif
6cbf4c8c 2887
6f97dba0
AL		 2888static void tcp_chr_connect(void *opaque)
2889{
2890 CharDriverState *chr = opaque;
2891 TCPCharDriver *s = chr->opaque;
01ca519f
CM		 2892 struct sockaddr_storage ss, ps;
2893 socklen_t ss_len = sizeof(ss), ps_len = sizeof(ps);
16cc4ffe
CM		 2894
2895 memset(&ss, 0, ss_len);
2896 if (getsockname(s->fd, (struct sockaddr *) &ss, &ss_len) != 0) {
2897 snprintf(chr->filename, CHR_MAX_FILENAME_SIZE,
2898 "Error in getsockname: %s\n", strerror(errno));
01ca519f
CM		 2899 } else if (getpeername(s->fd, (struct sockaddr *) &ps, &ps_len) != 0) {
2900 snprintf(chr->filename, CHR_MAX_FILENAME_SIZE,
2901 "Error in getpeername: %s\n", strerror(errno));
16cc4ffe 2902 } else {
01ca519f
CM		 2903 sockaddr_to_str(chr->filename, CHR_MAX_FILENAME_SIZE,
2904 &ss, ss_len, &ps, ps_len,
16cc4ffe
CM		 2905 s->is_listen, s->is_telnet);
2906 }
6f97dba0
AL		 2907
2908 s->connected = 1;
2ea5a7af 2909 if (s->chan) {
7ba9addc
AS		 2910 chr->fd_in_tag = io_add_watch_poll(s->chan, tcp_chr_read_poll,
2911 tcp_chr_read, chr);
bbdd2ad0 2912 }
fee204fd 2913 qemu_chr_be_generic_open(chr);
6f97dba0
AL		 2914}
2915
ac1b84dd
GH		 2916static void tcp_chr_update_read_handler(CharDriverState *chr)
2917{
2918 TCPCharDriver *s = chr->opaque;
2919
2920 remove_fd_in_watch(chr);
2921 if (s->chan) {
2922 chr->fd_in_tag = io_add_watch_poll(s->chan, tcp_chr_read_poll,
2923 tcp_chr_read, chr);
2924 }
2925}
2926
6f97dba0
AL		 2927#define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
2928static void tcp_chr_telnet_init(int fd)
2929{
2930 char buf[3];
2931 /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
2932 IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2933 send(fd, (char *)buf, 3, 0);
2934 IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2935 send(fd, (char *)buf, 3, 0);
2936 IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2937 send(fd, (char *)buf, 3, 0);
2938 IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2939 send(fd, (char *)buf, 3, 0);
2940}
2941
13661089
DB		 2942static int tcp_chr_add_client(CharDriverState *chr, int fd)
2943{
2944 TCPCharDriver *s = chr->opaque;
2945 if (s->fd != -1)
2946 return -1;
2947
f9e8cacc 2948 qemu_set_nonblock(fd);
13661089
DB		 2949 if (s->do_nodelay)
2950 socket_set_nodelay(fd);
2951 s->fd = fd;
2ea5a7af 2952 s->chan = io_channel_from_socket(fd);
910b6368
PB		 2953 if (s->listen_tag) {
2954 g_source_remove(s->listen_tag);
2955 s->listen_tag = 0;
2956 }
13661089
DB		 2957 tcp_chr_connect(chr);
2958
2959 return 0;
2960}
2961
2ea5a7af 2962static gboolean tcp_chr_accept(GIOChannel *channel, GIOCondition cond, void *opaque)
6f97dba0
AL		 2963{
2964 CharDriverState *chr = opaque;
2965 TCPCharDriver *s = chr->opaque;
2966 struct sockaddr_in saddr;
2967#ifndef _WIN32
2968 struct sockaddr_un uaddr;
2969#endif
2970 struct sockaddr *addr;
2971 socklen_t len;
2972 int fd;
2973
2974 for(;;) {
2975#ifndef _WIN32
2976 if (s->is_unix) {
2977 len = sizeof(uaddr);
2978 addr = (struct sockaddr *)&uaddr;
2979 } else
2980#endif
2981 {
2982 len = sizeof(saddr);
2983 addr = (struct sockaddr *)&saddr;
2984 }
40ff6d7e 2985 fd = qemu_accept(s->listen_fd, addr, &len);
6f97dba0 2986 if (fd < 0 && errno != EINTR) {
79f20075 2987 s->listen_tag = 0;
2ea5a7af 2988 return FALSE;
6f97dba0
AL		 2989 } else if (fd >= 0) {
2990 if (s->do_telnetopt)
2991 tcp_chr_telnet_init(fd);
2992 break;
2993 }
2994 }
13661089
DB		 2995 if (tcp_chr_add_client(chr, fd) < 0)
2996 close(fd);
2ea5a7af
AL		 2997
2998 return TRUE;
6f97dba0
AL		 2999}
3000
3001static void tcp_chr_close(CharDriverState *chr)
3002{
3003 TCPCharDriver *s = chr->opaque;
c76bf6bb 3004 int i;
cfb429cb 3005
5dd1f02b
CM		 3006 if (s->reconnect_timer) {
3007 g_source_remove(s->reconnect_timer);
3008 s->reconnect_timer = 0;
3009 }
cfb429cb 3010 qapi_free_SocketAddress(s->addr);
819f56b7 3011 if (s->fd >= 0) {
26da70c7 3012 remove_fd_in_watch(chr);
2ea5a7af
AL		 3013 if (s->chan) {
3014 g_io_channel_unref(s->chan);
3015 }
6f97dba0 3016 closesocket(s->fd);
819f56b7
AL		 3017 }
3018 if (s->listen_fd >= 0) {
2ea5a7af
AL		 3019 if (s->listen_tag) {
3020 g_source_remove(s->listen_tag);
910b6368 3021 s->listen_tag = 0;
2ea5a7af
AL		 3022 }
3023 if (s->listen_chan) {
3024 g_io_channel_unref(s->listen_chan);
3025 }
6f97dba0 3026 closesocket(s->listen_fd);
819f56b7 3027 }
c76bf6bb
NN		 3028 if (s->read_msgfds_num) {
3029 for (i = 0; i < s->read_msgfds_num; i++) {
3030 close(s->read_msgfds[i]);
3031 }
3032 g_free(s->read_msgfds);
3033 }
d39aac7a
NN		 3034 if (s->write_msgfds_num) {
3035 g_free(s->write_msgfds);
3036 }
7267c094 3037 g_free(s);
a425d23f 3038 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 3039}
3040
16cc4ffe 3041static void qemu_chr_finish_socket_connection(CharDriverState *chr, int fd)
6f97dba0 3042{
43ded1a0 3043 TCPCharDriver *s = chr->opaque;
f6bd5d6e 3044
cfb429cb 3045 if (s->is_listen) {
f6bd5d6e 3046 s->listen_fd = fd;
2ea5a7af 3047 s->listen_chan = io_channel_from_socket(s->listen_fd);
43ded1a0
CM		 3048 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN,
3049 tcp_chr_accept, chr);
f6bd5d6e
GH		 3050 } else {
3051 s->connected = 1;
3052 s->fd = fd;
3053 socket_set_nodelay(fd);
2ea5a7af 3054 s->chan = io_channel_from_socket(s->fd);
f6bd5d6e
GH		 3055 tcp_chr_connect(chr);
3056 }
43ded1a0
CM		 3057}
3058
51795029 3059static void qemu_chr_socket_connected(int fd, Error *err, void *opaque)
5dd1f02b
CM		 3060{
3061 CharDriverState *chr = opaque;
5008e5b7 3062 TCPCharDriver *s = chr->opaque;
5dd1f02b
CM		 3063
3064 if (fd < 0) {
5008e5b7 3065 check_report_connect_error(chr, err);
5dd1f02b
CM		 3066 return;
3067 }
3068
5008e5b7 3069 s->connect_err_reported = false;
5dd1f02b
CM		 3070 qemu_chr_finish_socket_connection(chr, fd);
3071}
3072
cfb429cb 3073static bool qemu_chr_open_socket_fd(CharDriverState *chr, Error **errp)
43ded1a0 3074{
cfb429cb 3075 TCPCharDriver *s = chr->opaque;
43ded1a0
CM		 3076 int fd;
3077
cfb429cb
CM		 3078 if (s->is_listen) {
3079 fd = socket_listen(s->addr, errp);
5dd1f02b
CM		 3080 } else if (s->reconnect_time) {
3081 fd = socket_connect(s->addr, errp, qemu_chr_socket_connected, chr);
3082 return fd >= 0;
3083 } else {
cfb429cb 3084 fd = socket_connect(s->addr, errp, NULL, NULL);
f6bd5d6e 3085 }
43ded1a0
CM		 3086 if (fd < 0) {
3087 return false;
3088 }
3089
16cc4ffe
CM		 3090 qemu_chr_finish_socket_connection(chr, fd);
3091 return true;
f6bd5d6e
GH		 3092}
3093
51767e7c 3094/*********************************************************/
3949e594 3095/* Ring buffer chardev */
51767e7c
LL		 3096
3097typedef struct {
3098 size_t size;
3099 size_t prod;
3100 size_t cons;
3101 uint8_t *cbuf;
3949e594 3102} RingBufCharDriver;
51767e7c 3103
3949e594 3104static size_t ringbuf_count(const CharDriverState *chr)
51767e7c 3105{
3949e594 3106 const RingBufCharDriver *d = chr->opaque;
51767e7c 3107
5c230105 3108 return d->prod - d->cons;
51767e7c
LL		 3109}
3110
9005b2a7 3111/* Called with chr_write_lock held. */
3949e594 3112static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
51767e7c 3113{
3949e594 3114 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3115 int i;
3116
3117 if (!buf || (len < 0)) {
3118 return -1;
3119 }
3120
3121 for (i = 0; i < len; i++ ) {
5c230105
MA		 3122 d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
3123 if (d->prod - d->cons > d->size) {
51767e7c
LL		 3124 d->cons = d->prod - d->size;
3125 }
3126 }
3127
3128 return 0;
3129}
3130
3949e594 3131static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len)
51767e7c 3132{
3949e594 3133 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3134 int i;
3135
9005b2a7 3136 qemu_mutex_lock(&chr->chr_write_lock);
5c230105
MA		 3137 for (i = 0; i < len && d->cons != d->prod; i++) {
3138 buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
51767e7c 3139 }
9005b2a7 3140 qemu_mutex_unlock(&chr->chr_write_lock);
51767e7c
LL		 3141
3142 return i;
3143}
3144
3949e594 3145static void ringbuf_chr_close(struct CharDriverState *chr)
51767e7c 3146{
3949e594 3147 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3148
3149 g_free(d->cbuf);
3150 g_free(d);
3151 chr->opaque = NULL;
3152}
3153
4f57378f
MA		 3154static CharDriverState *qemu_chr_open_ringbuf(ChardevRingbuf *opts,
3155 Error **errp)
51767e7c
LL		 3156{
3157 CharDriverState *chr;
3949e594 3158 RingBufCharDriver *d;
51767e7c 3159
db39fcf1 3160 chr = qemu_chr_alloc();
51767e7c
LL		 3161 d = g_malloc(sizeof(*d));
3162
1da48c65 3163 d->size = opts->has_size ? opts->size : 65536;
51767e7c
LL		 3164
3165 /* The size must be power of 2 */
3166 if (d->size & (d->size - 1)) {
4f57378f 3167 error_setg(errp, "size of ringbuf chardev must be power of two");
51767e7c
LL		 3168 goto fail;
3169 }
3170
3171 d->prod = 0;
3172 d->cons = 0;
3173 d->cbuf = g_malloc0(d->size);
3174
3175 chr->opaque = d;
3949e594
MA		 3176 chr->chr_write = ringbuf_chr_write;
3177 chr->chr_close = ringbuf_chr_close;
51767e7c
LL		 3178
3179 return chr;
3180
3181fail:
3182 g_free(d);
3183 g_free(chr);
3184 return NULL;
3185}
3186
8e597779 3187bool chr_is_ringbuf(const CharDriverState *chr)
1f590cf9 3188{
3949e594 3189 return chr->chr_write == ringbuf_chr_write;
1f590cf9
LL		 3190}
3191
3949e594 3192void qmp_ringbuf_write(const char *device, const char *data,
82e59a67 3193 bool has_format, enum DataFormat format,
1f590cf9
LL		 3194 Error **errp)
3195{
3196 CharDriverState *chr;
c4f331b6 3197 const uint8_t *write_data;
1f590cf9 3198 int ret;
3d1bba20 3199 gsize write_count;
1f590cf9
LL		 3200
3201 chr = qemu_chr_find(device);
3202 if (!chr) {
1a69278e 3203 error_setg(errp, "Device '%s' not found", device);
1f590cf9
LL		 3204 return;
3205 }
3206
3949e594
MA		 3207 if (!chr_is_ringbuf(chr)) {
3208 error_setg(errp,"%s is not a ringbuf device", device);
1f590cf9
LL		 3209 return;
3210 }
3211
1f590cf9
LL		 3212 if (has_format && (format == DATA_FORMAT_BASE64)) {
3213 write_data = g_base64_decode(data, &write_count);
3214 } else {
3215 write_data = (uint8_t *)data;
82e59a67 3216 write_count = strlen(data);
1f590cf9
LL		 3217 }
3218
3949e594 3219 ret = ringbuf_chr_write(chr, write_data, write_count);
1f590cf9 3220
13289fb5
MA		 3221 if (write_data != (uint8_t *)data) {
3222 g_free((void *)write_data);
3223 }
3224
1f590cf9
LL		 3225 if (ret < 0) {
3226 error_setg(errp, "Failed to write to device %s", device);
3227 return;
3228 }
3229}
3230
3949e594 3231char *qmp_ringbuf_read(const char *device, int64_t size,
3ab651fc
MA		 3232 bool has_format, enum DataFormat format,
3233 Error **errp)
49b6d722
LL		 3234{
3235 CharDriverState *chr;
c4f331b6 3236 uint8_t *read_data;
49b6d722 3237 size_t count;
3ab651fc 3238 char *data;
49b6d722
LL		 3239
3240 chr = qemu_chr_find(device);
3241 if (!chr) {
1a69278e 3242 error_setg(errp, "Device '%s' not found", device);
49b6d722
LL		 3243 return NULL;
3244 }
3245
3949e594
MA		 3246 if (!chr_is_ringbuf(chr)) {
3247 error_setg(errp,"%s is not a ringbuf device", device);
49b6d722
LL		 3248 return NULL;
3249 }
3250
3251 if (size <= 0) {
3252 error_setg(errp, "size must be greater than zero");
3253 return NULL;
3254 }
3255
3949e594 3256 count = ringbuf_count(chr);
49b6d722 3257 size = size > count ? count : size;
44f3bcd2 3258 read_data = g_malloc(size + 1);
49b6d722 3259
3949e594 3260 ringbuf_chr_read(chr, read_data, size);
49b6d722
LL		 3261
3262 if (has_format && (format == DATA_FORMAT_BASE64)) {
3ab651fc 3263 data = g_base64_encode(read_data, size);
13289fb5 3264 g_free(read_data);
49b6d722 3265 } else {
3949e594
MA		 3266 /*
3267 * FIXME should read only complete, valid UTF-8 characters up
3268 * to @size bytes. Invalid sequences should be replaced by a
3269 * suitable replacement character. Except when (and only
3270 * when) ring buffer lost characters since last read, initial
3271 * continuation characters should be dropped.
3272 */
44f3bcd2 3273 read_data[size] = 0;
3ab651fc 3274 data = (char *)read_data;
49b6d722
LL		 3275 }
3276
3ab651fc 3277 return data;
49b6d722
LL		 3278}
3279
33521634 3280QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
191bc01b 3281{
6ea314d9 3282 char host[65], port[33], width[8], height[8];
aeb2c47a 3283 int pos;
7d31544f 3284 const char *p;
191bc01b 3285 QemuOpts *opts;
8be7e7e4 3286 Error *local_err = NULL;
191bc01b 3287
8be7e7e4 3288 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
84d18f06 3289 if (local_err) {
8be7e7e4
LC		 3290 qerror_report_err(local_err);
3291 error_free(local_err);
191bc01b 3292 return NULL;
8be7e7e4 3293 }
191bc01b 3294
7591c5c1
GH		 3295 if (strstart(filename, "mon:", &p)) {
3296 filename = p;
3297 qemu_opt_set(opts, "mux", "on");
02c4bdf1
PB		 3298 if (strcmp(filename, "stdio") == 0) {
3299 /* Monitor is muxed to stdio: do not exit on Ctrl+C by default
3300 * but pass it to the guest. Handle this only for compat syntax,
3301 * for -chardev syntax we have special option for this.
3302 * This is what -nographic did, redirecting+muxing serial+monitor
3303 * to stdio causing Ctrl+C to be passed to guest. */
3304 qemu_opt_set(opts, "signal", "off");
3305 }
7591c5c1
GH		 3306 }
3307
f0457e8d
GH		 3308 if (strcmp(filename, "null") == 0 ||
3309 strcmp(filename, "pty") == 0 ||
3310 strcmp(filename, "msmouse") == 0 ||
dc1c21e6 3311 strcmp(filename, "braille") == 0 ||
5692399f 3312 strcmp(filename, "testdev") == 0 ||
f0457e8d 3313 strcmp(filename, "stdio") == 0) {
4490dadf 3314 qemu_opt_set(opts, "backend", filename);
191bc01b
GH		 3315 return opts;
3316 }
6ea314d9
GH		 3317 if (strstart(filename, "vc", &p)) {
3318 qemu_opt_set(opts, "backend", "vc");
3319 if (*p == ':') {
49aa4058 3320 if (sscanf(p+1, "%7[0-9]x%7[0-9]", width, height) == 2) {
6ea314d9
GH		 3321 /* pixels */
3322 qemu_opt_set(opts, "width", width);
3323 qemu_opt_set(opts, "height", height);
49aa4058 3324 } else if (sscanf(p+1, "%7[0-9]Cx%7[0-9]C", width, height) == 2) {
6ea314d9
GH		 3325 /* chars */
3326 qemu_opt_set(opts, "cols", width);
3327 qemu_opt_set(opts, "rows", height);
3328 } else {
3329 goto fail;
3330 }
3331 }
3332 return opts;
3333 }
d6c983cd
GH		 3334 if (strcmp(filename, "con:") == 0) {
3335 qemu_opt_set(opts, "backend", "console");
3336 return opts;
3337 }
48b76496
GH		 3338 if (strstart(filename, "COM", NULL)) {
3339 qemu_opt_set(opts, "backend", "serial");
3340 qemu_opt_set(opts, "path", filename);
3341 return opts;
3342 }
7d31544f
GH		 3343 if (strstart(filename, "file:", &p)) {
3344 qemu_opt_set(opts, "backend", "file");
3345 qemu_opt_set(opts, "path", p);
3346 return opts;
3347 }
3348 if (strstart(filename, "pipe:", &p)) {
3349 qemu_opt_set(opts, "backend", "pipe");
3350 qemu_opt_set(opts, "path", p);
3351 return opts;
3352 }
aeb2c47a
GH		 3353 if (strstart(filename, "tcp:", &p) ||
3354 strstart(filename, "telnet:", &p)) {
3355 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3356 host[0] = 0;
3357 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
3358 goto fail;
3359 }
3360 qemu_opt_set(opts, "backend", "socket");
3361 qemu_opt_set(opts, "host", host);
3362 qemu_opt_set(opts, "port", port);
3363 if (p[pos] == ',') {
3364 if (qemu_opts_do_parse(opts, p+pos+1, NULL) != 0)
3365 goto fail;
3366 }
3367 if (strstart(filename, "telnet:", &p))
3368 qemu_opt_set(opts, "telnet", "on");
3369 return opts;
3370 }
7e1b35b4
GH		 3371 if (strstart(filename, "udp:", &p)) {
3372 qemu_opt_set(opts, "backend", "udp");
3373 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
3374 host[0] = 0;
39324ca4 3375 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
7e1b35b4
GH		 3376 goto fail;
3377 }
3378 }
3379 qemu_opt_set(opts, "host", host);
3380 qemu_opt_set(opts, "port", port);
3381 if (p[pos] == '@') {
3382 p += pos + 1;
3383 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3384 host[0] = 0;
3385 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
7e1b35b4
GH		 3386 goto fail;
3387 }
3388 }
3389 qemu_opt_set(opts, "localaddr", host);
3390 qemu_opt_set(opts, "localport", port);
3391 }
3392 return opts;
3393 }
aeb2c47a
GH		 3394 if (strstart(filename, "unix:", &p)) {
3395 qemu_opt_set(opts, "backend", "socket");
3396 if (qemu_opts_do_parse(opts, p, "path") != 0)
3397 goto fail;
3398 return opts;
3399 }
48b76496
GH		 3400 if (strstart(filename, "/dev/parport", NULL) ||
3401 strstart(filename, "/dev/ppi", NULL)) {
3402 qemu_opt_set(opts, "backend", "parport");
3403 qemu_opt_set(opts, "path", filename);
3404 return opts;
3405 }
3406 if (strstart(filename, "/dev/", NULL)) {
3407 qemu_opt_set(opts, "backend", "tty");
3408 qemu_opt_set(opts, "path", filename);
3409 return opts;
3410 }
191bc01b 3411
aeb2c47a 3412fail:
191bc01b
GH		 3413 qemu_opts_del(opts);
3414 return NULL;
3415}
3416
846e2e49
GH		 3417static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
3418 Error **errp)
3419{
3420 const char *path = qemu_opt_get(opts, "path");
3421
3422 if (path == NULL) {
3423 error_setg(errp, "chardev: file: no filename given");
3424 return;
3425 }
3426 backend->file = g_new0(ChardevFile, 1);
3427 backend->file->out = g_strdup(path);
3428}
3429
7c358031
GH		 3430static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
3431 Error **errp)
3432{
3433 backend->stdio = g_new0(ChardevStdio, 1);
3434 backend->stdio->has_signal = true;
02c4bdf1 3435 backend->stdio->signal = qemu_opt_get_bool(opts, "signal", true);
7c358031
GH		 3436}
3437
0f1cb51d
GH		 3438static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
3439 Error **errp)
3440{
3441 const char *device = qemu_opt_get(opts, "path");
3442
3443 if (device == NULL) {
3444 error_setg(errp, "chardev: serial/tty: no device path given");
3445 return;
3446 }
3447 backend->serial = g_new0(ChardevHostdev, 1);
3448 backend->serial->device = g_strdup(device);
3449}
3450
dc375097
GH		 3451static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
3452 Error **errp)
3453{
3454 const char *device = qemu_opt_get(opts, "path");
3455
3456 if (device == NULL) {
3457 error_setg(errp, "chardev: parallel: no device path given");
3458 return;
3459 }
3460 backend->parallel = g_new0(ChardevHostdev, 1);
3461 backend->parallel->device = g_strdup(device);
3462}
3463
548cbb36
GH		 3464static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
3465 Error **errp)
3466{
3467 const char *device = qemu_opt_get(opts, "path");
3468
3469 if (device == NULL) {
3470 error_setg(errp, "chardev: pipe: no device path given");
3471 return;
3472 }
3473 backend->pipe = g_new0(ChardevHostdev, 1);
3474 backend->pipe->device = g_strdup(device);
3475}
3476
4f57378f
MA		 3477static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
3478 Error **errp)
1da48c65
GH		 3479{
3480 int val;
3481
3a1da42e 3482 backend->ringbuf = g_new0(ChardevRingbuf, 1);
1da48c65 3483
0f953051 3484 val = qemu_opt_get_size(opts, "size", 0);
1da48c65 3485 if (val != 0) {
3a1da42e
MA		 3486 backend->ringbuf->has_size = true;
3487 backend->ringbuf->size = val;
1da48c65
GH		 3488 }
3489}
3490
bb6fb7c0
GH		 3491static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend,
3492 Error **errp)
3493{
3494 const char *chardev = qemu_opt_get(opts, "chardev");
3495
3496 if (chardev == NULL) {
3497 error_setg(errp, "chardev: mux: no chardev given");
3498 return;
3499 }
3500 backend->mux = g_new0(ChardevMux, 1);
3501 backend->mux->chardev = g_strdup(chardev);
3502}
3503
dafd325d
PM		 3504static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend,
3505 Error **errp)
3506{
3507 bool is_listen = qemu_opt_get_bool(opts, "server", false);
3508 bool is_waitconnect = is_listen && qemu_opt_get_bool(opts, "wait", true);
3509 bool is_telnet = qemu_opt_get_bool(opts, "telnet", false);
3510 bool do_nodelay = !qemu_opt_get_bool(opts, "delay", true);
5dd1f02b 3511 int64_t reconnect = qemu_opt_get_number(opts, "reconnect", 0);
dafd325d
PM		 3512 const char *path = qemu_opt_get(opts, "path");
3513 const char *host = qemu_opt_get(opts, "host");
3514 const char *port = qemu_opt_get(opts, "port");
3515 SocketAddress *addr;
3516
3517 if (!path) {
3518 if (!host) {
3519 error_setg(errp, "chardev: socket: no host given");
3520 return;
3521 }
3522 if (!port) {
3523 error_setg(errp, "chardev: socket: no port given");
3524 return;
3525 }
3526 }
3527
3528 backend->socket = g_new0(ChardevSocket, 1);
3529
3530 backend->socket->has_nodelay = true;
3531 backend->socket->nodelay = do_nodelay;
3532 backend->socket->has_server = true;
3533 backend->socket->server = is_listen;
3534 backend->socket->has_telnet = true;
3535 backend->socket->telnet = is_telnet;
3536 backend->socket->has_wait = true;
3537 backend->socket->wait = is_waitconnect;
5dd1f02b
CM		 3538 backend->socket->has_reconnect = true;
3539 backend->socket->reconnect = reconnect;
dafd325d
PM		 3540
3541 addr = g_new0(SocketAddress, 1);
3542 if (path) {
3543 addr->kind = SOCKET_ADDRESS_KIND_UNIX;
3544 addr->q_unix = g_new0(UnixSocketAddress, 1);
3545 addr->q_unix->path = g_strdup(path);
3546 } else {
3547 addr->kind = SOCKET_ADDRESS_KIND_INET;
3548 addr->inet = g_new0(InetSocketAddress, 1);
3549 addr->inet->host = g_strdup(host);
3550 addr->inet->port = g_strdup(port);
3551 addr->inet->has_to = qemu_opt_get(opts, "to");
3552 addr->inet->to = qemu_opt_get_number(opts, "to", 0);
3553 addr->inet->has_ipv4 = qemu_opt_get(opts, "ipv4");
3554 addr->inet->ipv4 = qemu_opt_get_bool(opts, "ipv4", 0);
3555 addr->inet->has_ipv6 = qemu_opt_get(opts, "ipv6");
3556 addr->inet->ipv6 = qemu_opt_get_bool(opts, "ipv6", 0);
3557 }
3558 backend->socket->addr = addr;
3559}
3560
90a14bfe
PM		 3561static void qemu_chr_parse_udp(QemuOpts *opts, ChardevBackend *backend,
3562 Error **errp)
3563{
3564 const char *host = qemu_opt_get(opts, "host");
3565 const char *port = qemu_opt_get(opts, "port");
3566 const char *localaddr = qemu_opt_get(opts, "localaddr");
3567 const char *localport = qemu_opt_get(opts, "localport");
3568 bool has_local = false;
3569 SocketAddress *addr;
3570
3571 if (host == NULL || strlen(host) == 0) {
3572 host = "localhost";
3573 }
3574 if (port == NULL || strlen(port) == 0) {
3575 error_setg(errp, "chardev: udp: remote port not specified");
3576 return;
3577 }
3578 if (localport == NULL || strlen(localport) == 0) {
3579 localport = "0";
3580 } else {
3581 has_local = true;
3582 }
3583 if (localaddr == NULL || strlen(localaddr) == 0) {
3584 localaddr = "";
3585 } else {
3586 has_local = true;
3587 }
3588
3589 backend->udp = g_new0(ChardevUdp, 1);
3590
3591 addr = g_new0(SocketAddress, 1);
3592 addr->kind = SOCKET_ADDRESS_KIND_INET;
3593 addr->inet = g_new0(InetSocketAddress, 1);
3594 addr->inet->host = g_strdup(host);
3595 addr->inet->port = g_strdup(port);
3596 addr->inet->has_ipv4 = qemu_opt_get(opts, "ipv4");
3597 addr->inet->ipv4 = qemu_opt_get_bool(opts, "ipv4", 0);
3598 addr->inet->has_ipv6 = qemu_opt_get(opts, "ipv6");
3599 addr->inet->ipv6 = qemu_opt_get_bool(opts, "ipv6", 0);
3600 backend->udp->remote = addr;
3601
3602 if (has_local) {
3603 backend->udp->has_local = true;
3604 addr = g_new0(SocketAddress, 1);
3605 addr->kind = SOCKET_ADDRESS_KIND_INET;
3606 addr->inet = g_new0(InetSocketAddress, 1);
3607 addr->inet->host = g_strdup(localaddr);
3608 addr->inet->port = g_strdup(localport);
3609 backend->udp->local = addr;
3610 }
3611}
3612
d654f34e 3613typedef struct CharDriver {
191bc01b 3614 const char *name;
99aec012 3615 ChardevBackendKind kind;
2c5f4882 3616 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
d654f34e
AL		 3617} CharDriver;
3618
3619static GSList *backends;
3620
e4d50d47 3621void register_char_driver(const char *name, ChardevBackendKind kind,
2c5f4882
GH		 3622 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp))
3623{
3624 CharDriver *s;
3625
3626 s = g_malloc0(sizeof(*s));
3627 s->name = g_strdup(name);
3628 s->kind = kind;
3629 s->parse = parse;
3630
3631 backends = g_slist_append(backends, s);
3632}
3633
f69554b9 3634CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
bd2d80b2
GH		 3635 void (*init)(struct CharDriverState *s),
3636 Error **errp)
191bc01b 3637{
0aff637e 3638 Error *local_err = NULL;
d654f34e 3639 CharDriver *cd;
191bc01b 3640 CharDriverState *chr;
d654f34e 3641 GSList *i;
a61ae7f8
PM		 3642 ChardevReturn *ret = NULL;
3643 ChardevBackend *backend;
3644 const char *id = qemu_opts_id(opts);
3645 char *bid = NULL;
191bc01b 3646
a61ae7f8 3647 if (id == NULL) {
312fd5f2 3648 error_setg(errp, "chardev: no id specified");
2274ae9d 3649 goto err;
191bc01b
GH		 3650 }
3651
1bbd185f 3652 if (qemu_opt_get(opts, "backend") == NULL) {
312fd5f2 3653 error_setg(errp, "chardev: \"%s\" missing backend",
bd2d80b2 3654 qemu_opts_id(opts));
2274ae9d 3655 goto err;
1bbd185f 3656 }
d654f34e
AL		 3657 for (i = backends; i; i = i->next) {
3658 cd = i->data;
3659
3660 if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) {
191bc01b 3661 break;
d654f34e 3662 }
191bc01b 3663 }
d654f34e 3664 if (i == NULL) {
312fd5f2 3665 error_setg(errp, "chardev: backend \"%s\" not found",
bd2d80b2 3666 qemu_opt_get(opts, "backend"));
e668287d 3667 goto err;
191bc01b
GH		 3668 }
3669
a61ae7f8 3670 backend = g_new0(ChardevBackend, 1);
edb2fb3c 3671
a61ae7f8
PM		 3672 if (qemu_opt_get_bool(opts, "mux", 0)) {
3673 bid = g_strdup_printf("%s-base", id);
3674 }
2c5f4882 3675
a61ae7f8
PM		 3676 chr = NULL;
3677 backend->kind = cd->kind;
3678 if (cd->parse) {
3679 cd->parse(opts, backend, &local_err);
3680 if (local_err) {
3681 error_propagate(errp, local_err);
2c5f4882
GH		 3682 goto qapi_out;
3683 }
2c5f4882 3684 }
a61ae7f8
PM		 3685 ret = qmp_chardev_add(bid ? bid : id, backend, errp);
3686 if (!ret) {
3687 goto qapi_out;
191bc01b
GH		 3688 }
3689
a61ae7f8
PM		 3690 if (bid) {
3691 qapi_free_ChardevBackend(backend);
3692 qapi_free_ChardevReturn(ret);
3693 backend = g_new0(ChardevBackend, 1);
3694 backend->mux = g_new0(ChardevMux, 1);
3695 backend->kind = CHARDEV_BACKEND_KIND_MUX;
3696 backend->mux->chardev = g_strdup(bid);
3697 ret = qmp_chardev_add(id, backend, errp);
3698 if (!ret) {
3699 chr = qemu_chr_find(bid);
3700 qemu_chr_delete(chr);
3701 chr = NULL;
3702 goto qapi_out;
3703 }
bd5c51ee 3704 }
7591c5c1 3705
a61ae7f8 3706 chr = qemu_chr_find(id);
2274ae9d 3707 chr->opts = opts;
a61ae7f8
PM		 3708
3709qapi_out:
3710 qapi_free_ChardevBackend(backend);
3711 qapi_free_ChardevReturn(ret);
3712 g_free(bid);
191bc01b 3713 return chr;
2274ae9d
GH		 3714
3715err:
3716 qemu_opts_del(opts);
3717 return NULL;
191bc01b
GH		 3718}
3719
27143a44 3720CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
6f97dba0
AL		 3721{
3722 const char *p;
3723 CharDriverState *chr;
191bc01b 3724 QemuOpts *opts;
bd2d80b2 3725 Error *err = NULL;
191bc01b 3726
c845f401
GH		 3727 if (strstart(filename, "chardev:", &p)) {
3728 return qemu_chr_find(p);
3729 }
3730
191bc01b 3731 opts = qemu_chr_parse_compat(label, filename);
7e1b35b4
GH		 3732 if (!opts)
3733 return NULL;
6f97dba0 3734
bd2d80b2 3735 chr = qemu_chr_new_from_opts(opts, init, &err);
84d18f06 3736 if (err) {
4a44d85e 3737 error_report("%s", error_get_pretty(err));
bd2d80b2
GH		 3738 error_free(err);
3739 }
7e1b35b4 3740 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
456d6069 3741 qemu_chr_fe_claim_no_fail(chr);
7e1b35b4 3742 monitor_init(chr, MONITOR_USE_READLINE);
6f97dba0
AL		 3743 }
3744 return chr;
3745}
3746
15f31519 3747void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo)
c48855e1
PB		 3748{
3749 if (chr->chr_set_echo) {
3750 chr->chr_set_echo(chr, echo);
3751 }
3752}
3753
8e25daa8 3754void qemu_chr_fe_set_open(struct CharDriverState *chr, int fe_open)
7c32c4fe 3755{
8e25daa8 3756 if (chr->fe_open == fe_open) {
c0c4bd2c
HG		 3757 return;
3758 }
8e25daa8 3759 chr->fe_open = fe_open;
574b711a
HG		 3760 if (chr->chr_set_fe_open) {
3761 chr->chr_set_fe_open(chr, fe_open);
7c32c4fe
HG		 3762 }
3763}
3764
d61b0c9a
MAL		 3765void qemu_chr_fe_event(struct CharDriverState *chr, int event)
3766{
3767 if (chr->chr_fe_event) {
3768 chr->chr_fe_event(chr, event);
3769 }
3770}
3771
2c8a5942
KW		 3772int qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond,
3773 GIOFunc func, void *user_data)
23673ca7
AL		 3774{
3775 GSource *src;
3776 guint tag;
3777
3778 if (s->chr_add_watch == NULL) {
3779 return -ENOSYS;
3780 }
3781
3782 src = s->chr_add_watch(s, cond);
62c339c5
PB		 3783 if (!src) {
3784 return -EINVAL;
3785 }
3786
23673ca7
AL		 3787 g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
3788 tag = g_source_attach(src, NULL);
3789 g_source_unref(src);
3790
3791 return tag;
3792}
3793
44c473de
HG		 3794int qemu_chr_fe_claim(CharDriverState *s)
3795{
3796 if (s->avail_connections < 1) {
3797 return -1;
3798 }
3799 s->avail_connections--;
3800 return 0;
3801}
3802
3803void qemu_chr_fe_claim_no_fail(CharDriverState *s)
3804{
3805 if (qemu_chr_fe_claim(s) != 0) {
3806 fprintf(stderr, "%s: error chardev \"%s\" already used\n",
3807 __func__, s->label);
3808 exit(1);
3809 }
3810}
3811
3812void qemu_chr_fe_release(CharDriverState *s)
3813{
3814 s->avail_connections++;
3815}
3816
70f24fb6 3817void qemu_chr_delete(CharDriverState *chr)
6f97dba0 3818{
72cf2d4f 3819 QTAILQ_REMOVE(&chardevs, chr, next);
2274ae9d 3820 if (chr->chr_close) {
6f97dba0 3821 chr->chr_close(chr);
2274ae9d 3822 }
7267c094
AL		 3823 g_free(chr->filename);
3824 g_free(chr->label);
2274ae9d
GH		 3825 if (chr->opts) {
3826 qemu_opts_del(chr->opts);
3827 }
7267c094 3828 g_free(chr);
6f97dba0
AL		 3829}
3830
c5a415a0 3831ChardevInfoList *qmp_query_chardev(Error **errp)
6f97dba0 3832{
c5a415a0 3833 ChardevInfoList *chr_list = NULL;
6f97dba0
AL		 3834 CharDriverState *chr;
3835
72cf2d4f 3836 QTAILQ_FOREACH(chr, &chardevs, next) {
c5a415a0
LC		 3837 ChardevInfoList *info = g_malloc0(sizeof(*info));
3838 info->value = g_malloc0(sizeof(*info->value));
3839 info->value->label = g_strdup(chr->label);
3840 info->value->filename = g_strdup(chr->filename);
32a97ea1 3841 info->value->frontend_open = chr->fe_open;
c5a415a0
LC		 3842
3843 info->next = chr_list;
3844 chr_list = info;
6f97dba0 3845 }
588b3832 3846
c5a415a0 3847 return chr_list;
6f97dba0 3848}
c845f401 3849
77d1c3c6
MK		 3850ChardevBackendInfoList *qmp_query_chardev_backends(Error **errp)
3851{
3852 ChardevBackendInfoList *backend_list = NULL;
3853 CharDriver *c = NULL;
3854 GSList *i = NULL;
3855
3856 for (i = backends; i; i = i->next) {
3857 ChardevBackendInfoList *info = g_malloc0(sizeof(*info));
3858 c = i->data;
3859 info->value = g_malloc0(sizeof(*info->value));
3860 info->value->name = g_strdup(c->name);
3861
3862 info->next = backend_list;
3863 backend_list = info;
3864 }
3865
3866 return backend_list;
3867}
3868
c845f401
GH		 3869CharDriverState *qemu_chr_find(const char *name)
3870{
3871 CharDriverState *chr;
3872
72cf2d4f 3873 QTAILQ_FOREACH(chr, &chardevs, next) {
c845f401
GH		 3874 if (strcmp(chr->label, name) != 0)
3875 continue;
3876 return chr;
3877 }
3878 return NULL;
3879}
0beb4942
AL		 3880
3881/* Get a character (serial) device interface. */
3882CharDriverState *qemu_char_get_next_serial(void)
3883{
3884 static int next_serial;
456d6069 3885 CharDriverState *chr;
0beb4942
AL		 3886
3887 /* FIXME: This function needs to go away: use chardev properties! */
456d6069
HG		 3888
3889 while (next_serial < MAX_SERIAL_PORTS && serial_hds[next_serial]) {
3890 chr = serial_hds[next_serial++];
3891 qemu_chr_fe_claim_no_fail(chr);
3892 return chr;
3893 }
3894 return NULL;
0beb4942
AL		 3895}
3896
4d454574
PB		 3897QemuOptsList qemu_chardev_opts = {
3898 .name = "chardev",
3899 .implied_opt_name = "backend",
3900 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
3901 .desc = {
3902 {
3903 .name = "backend",
3904 .type = QEMU_OPT_STRING,
3905 },{
3906 .name = "path",
3907 .type = QEMU_OPT_STRING,
3908 },{
3909 .name = "host",
3910 .type = QEMU_OPT_STRING,
3911 },{
3912 .name = "port",
3913 .type = QEMU_OPT_STRING,
3914 },{
3915 .name = "localaddr",
3916 .type = QEMU_OPT_STRING,
3917 },{
3918 .name = "localport",
3919 .type = QEMU_OPT_STRING,
3920 },{
3921 .name = "to",
3922 .type = QEMU_OPT_NUMBER,
3923 },{
3924 .name = "ipv4",
3925 .type = QEMU_OPT_BOOL,
3926 },{
3927 .name = "ipv6",
3928 .type = QEMU_OPT_BOOL,
3929 },{
3930 .name = "wait",
3931 .type = QEMU_OPT_BOOL,
3932 },{
3933 .name = "server",
3934 .type = QEMU_OPT_BOOL,
3935 },{
3936 .name = "delay",
3937 .type = QEMU_OPT_BOOL,
5dd1f02b
CM		 3938 },{
3939 .name = "reconnect",
3940 .type = QEMU_OPT_NUMBER,
4d454574
PB		 3941 },{
3942 .name = "telnet",
3943 .type = QEMU_OPT_BOOL,
3944 },{
3945 .name = "width",
3946 .type = QEMU_OPT_NUMBER,
3947 },{
3948 .name = "height",
3949 .type = QEMU_OPT_NUMBER,
3950 },{
3951 .name = "cols",
3952 .type = QEMU_OPT_NUMBER,
3953 },{
3954 .name = "rows",
3955 .type = QEMU_OPT_NUMBER,
3956 },{
3957 .name = "mux",
3958 .type = QEMU_OPT_BOOL,
3959 },{
3960 .name = "signal",
3961 .type = QEMU_OPT_BOOL,
3962 },{
3963 .name = "name",
3964 .type = QEMU_OPT_STRING,
3965 },{
3966 .name = "debug",
3967 .type = QEMU_OPT_NUMBER,
51767e7c 3968 },{
3949e594 3969 .name = "size",
de1cc36e 3970 .type = QEMU_OPT_SIZE,
bb6fb7c0
GH		 3971 },{
3972 .name = "chardev",
3973 .type = QEMU_OPT_STRING,
4d454574
PB		 3974 },
3975 { /* end of list */ }
3976 },
3977};
f1a1a356 3978
ffbdbe59
GH		 3979#ifdef _WIN32
3980
3981static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
3982{
3983 HANDLE out;
3984
e859eda5 3985 if (file->has_in) {
ffbdbe59
GH		 3986 error_setg(errp, "input file not supported");
3987 return NULL;
3988 }
3989
3990 out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
3991 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
3992 if (out == INVALID_HANDLE_VALUE) {
3993 error_setg(errp, "open %s failed", file->out);
3994 return NULL;
3995 }
3996 return qemu_chr_open_win_file(out);
3997}
3998
d36b2b90
MA		 3999static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
4000 Error **errp)
d59044ef 4001{
d36b2b90
MA		 4002 return qemu_chr_open_win_path(serial->device);
4003}
4004
4005static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
4006 Error **errp)
4007{
4008 error_setg(errp, "character device backend type 'parallel' not supported");
4009 return NULL;
d59044ef
GH		 4010}
4011
ffbdbe59
GH		 4012#else /* WIN32 */
4013
4014static int qmp_chardev_open_file_source(char *src, int flags,
4015 Error **errp)
4016{
4017 int fd = -1;
4018
4019 TFR(fd = qemu_open(src, flags, 0666));
4020 if (fd == -1) {
20c39760 4021 error_setg_file_open(errp, errno, src);
ffbdbe59
GH		 4022 }
4023 return fd;
4024}
4025
4026static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
4027{
5f758366 4028 int flags, in = -1, out;
ffbdbe59
GH		 4029
4030 flags = O_WRONLY | O_TRUNC | O_CREAT | O_BINARY;
4031 out = qmp_chardev_open_file_source(file->out, flags, errp);
5f758366 4032 if (out < 0) {
ffbdbe59
GH		 4033 return NULL;
4034 }
4035
e859eda5 4036 if (file->has_in) {
ffbdbe59
GH		 4037 flags = O_RDONLY;
4038 in = qmp_chardev_open_file_source(file->in, flags, errp);
5f758366 4039 if (in < 0) {
ffbdbe59
GH		 4040 qemu_close(out);
4041 return NULL;
4042 }
4043 }
4044
4045 return qemu_chr_open_fd(in, out);
4046}
4047
d36b2b90
MA		 4048static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
4049 Error **errp)
d59044ef 4050{
d59044ef 4051#ifdef HAVE_CHARDEV_TTY
d36b2b90
MA		 4052 int fd;
4053
4054 fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
5f758366 4055 if (fd < 0) {
d36b2b90 4056 return NULL;
39099991 4057 }
f9e8cacc 4058 qemu_set_nonblock(fd);
d36b2b90
MA		 4059 return qemu_chr_open_tty_fd(fd);
4060#else
4061 error_setg(errp, "character device backend type 'serial' not supported");
4062 return NULL;
88a946d3 4063#endif
d36b2b90
MA		 4064}
4065
4066static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
4067 Error **errp)
4068{
88a946d3 4069#ifdef HAVE_CHARDEV_PARPORT
d36b2b90
MA		 4070 int fd;
4071
4072 fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
5f758366 4073 if (fd < 0) {
d59044ef
GH		 4074 return NULL;
4075 }
d36b2b90
MA		 4076 return qemu_chr_open_pp_fd(fd);
4077#else
4078 error_setg(errp, "character device backend type 'parallel' not supported");
4079 return NULL;
4080#endif
d59044ef
GH		 4081}
4082
ffbdbe59
GH		 4083#endif /* WIN32 */
4084
5008e5b7
CM		 4085static void socket_try_connect(CharDriverState *chr)
4086{
4087 Error *err = NULL;
4088
4089 if (!qemu_chr_open_socket_fd(chr, &err)) {
4090 check_report_connect_error(chr, err);
4091 }
4092}
4093
5dd1f02b
CM		 4094static gboolean socket_reconnect_timeout(gpointer opaque)
4095{
4096 CharDriverState *chr = opaque;
4097 TCPCharDriver *s = chr->opaque;
5dd1f02b
CM		 4098
4099 s->reconnect_timer = 0;
4100
4101 if (chr->be_open) {
4102 return false;
4103 }
4104
5008e5b7 4105 socket_try_connect(chr);
5dd1f02b
CM		 4106
4107 return false;
4108}
4109
f6bd5d6e
GH		 4110static CharDriverState *qmp_chardev_open_socket(ChardevSocket *sock,
4111 Error **errp)
4112{
43ded1a0
CM		 4113 CharDriverState *chr;
4114 TCPCharDriver *s;
f6bd5d6e
GH		 4115 SocketAddress *addr = sock->addr;
4116 bool do_nodelay = sock->has_nodelay ? sock->nodelay : false;
4117 bool is_listen = sock->has_server ? sock->server : true;
4118 bool is_telnet = sock->has_telnet ? sock->telnet : false;
4119 bool is_waitconnect = sock->has_wait ? sock->wait : false;
5dd1f02b 4120 int64_t reconnect = sock->has_reconnect ? sock->reconnect : 0;
43ded1a0
CM		 4121
4122 chr = qemu_chr_alloc();
4123 s = g_malloc0(sizeof(TCPCharDriver));
4124
4125 s->fd = -1;
4126 s->listen_fd = -1;
4127 s->is_unix = addr->kind == SOCKET_ADDRESS_KIND_UNIX;
cfb429cb
CM		 4128 s->is_listen = is_listen;
4129 s->is_telnet = is_telnet;
43ded1a0 4130 s->do_nodelay = do_nodelay;
cfb429cb 4131 qapi_copy_SocketAddress(&s->addr, sock->addr);
43ded1a0
CM		 4132
4133 chr->opaque = s;
4134 chr->chr_write = tcp_chr_write;
4135 chr->chr_sync_read = tcp_chr_sync_read;
4136 chr->chr_close = tcp_chr_close;
4137 chr->get_msgfds = tcp_get_msgfds;
4138 chr->set_msgfds = tcp_set_msgfds;
4139 chr->chr_add_client = tcp_chr_add_client;
4140 chr->chr_add_watch = tcp_chr_add_watch;
4141 chr->chr_update_read_handler = tcp_chr_update_read_handler;
4142 /* be isn't opened until we get a connection */
4143 chr->explicit_be_open = true;
4144
4145 chr->filename = g_malloc(CHR_MAX_FILENAME_SIZE);
16cc4ffe
CM		 4146 SocketAddress_to_str(chr->filename, CHR_MAX_FILENAME_SIZE, "disconnected:",
4147 addr, is_listen, is_telnet);
f6bd5d6e
GH		 4148
4149 if (is_listen) {
43ded1a0
CM		 4150 if (is_telnet) {
4151 s->do_telnetopt = 1;
4152 }
5dd1f02b
CM		 4153 } else if (reconnect > 0) {
4154 s->reconnect_time = reconnect;
f6bd5d6e 4155 }
43ded1a0 4156
5008e5b7
CM		 4157 if (s->reconnect_time) {
4158 socket_try_connect(chr);
4159 } else if (!qemu_chr_open_socket_fd(chr, errp)) {
4160 g_free(s);
4161 g_free(chr->filename);
4162 g_free(chr);
4163 return NULL;
f6bd5d6e 4164 }
43ded1a0
CM		 4165
4166 if (is_listen && is_waitconnect) {
4167 fprintf(stderr, "QEMU waiting for connection on: %s\n",
4168 chr->filename);
4169 tcp_chr_accept(s->listen_chan, G_IO_IN, chr);
4170 qemu_set_nonblock(s->listen_fd);
4171 }
4172
4173 return chr;
f6bd5d6e
GH		 4174}
4175
08d0ab3f
LL		 4176static CharDriverState *qmp_chardev_open_udp(ChardevUdp *udp,
4177 Error **errp)
3ecc059d
GH		 4178{
4179 int fd;
4180
08d0ab3f 4181 fd = socket_dgram(udp->remote, udp->local, errp);
5f758366 4182 if (fd < 0) {
3ecc059d
GH		 4183 return NULL;
4184 }
4185 return qemu_chr_open_udp_fd(fd);
4186}
4187
f1a1a356
GH		 4188ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
4189 Error **errp)
4190{
4191 ChardevReturn *ret = g_new0(ChardevReturn, 1);
edb2fb3c 4192 CharDriverState *base, *chr = NULL;
f1a1a356
GH		 4193
4194 chr = qemu_chr_find(id);
4195 if (chr) {
4196 error_setg(errp, "Chardev '%s' already exists", id);
4197 g_free(ret);
4198 return NULL;
4199 }
4200
4201 switch (backend->kind) {
ffbdbe59
GH		 4202 case CHARDEV_BACKEND_KIND_FILE:
4203 chr = qmp_chardev_open_file(backend->file, errp);
4204 break;
d36b2b90
MA		 4205 case CHARDEV_BACKEND_KIND_SERIAL:
4206 chr = qmp_chardev_open_serial(backend->serial, errp);
4207 break;
4208 case CHARDEV_BACKEND_KIND_PARALLEL:
4209 chr = qmp_chardev_open_parallel(backend->parallel, errp);
d59044ef 4210 break;
548cbb36
GH		 4211 case CHARDEV_BACKEND_KIND_PIPE:
4212 chr = qemu_chr_open_pipe(backend->pipe);
4213 break;
f6bd5d6e
GH		 4214 case CHARDEV_BACKEND_KIND_SOCKET:
4215 chr = qmp_chardev_open_socket(backend->socket, errp);
4216 break;
08d0ab3f
LL		 4217 case CHARDEV_BACKEND_KIND_UDP:
4218 chr = qmp_chardev_open_udp(backend->udp, errp);
3ecc059d 4219 break;
0a1a7fab
GH		 4220#ifdef HAVE_CHARDEV_TTY
4221 case CHARDEV_BACKEND_KIND_PTY:
e68c5958 4222 chr = qemu_chr_open_pty(id, ret);
0a1a7fab 4223 break;
0a1a7fab 4224#endif
f1a1a356 4225 case CHARDEV_BACKEND_KIND_NULL:
80dca9e6 4226 chr = qemu_chr_open_null();
f1a1a356 4227 break;
edb2fb3c
GH		 4228 case CHARDEV_BACKEND_KIND_MUX:
4229 base = qemu_chr_find(backend->mux->chardev);
4230 if (base == NULL) {
4231 error_setg(errp, "mux: base chardev %s not found",
4232 backend->mux->chardev);
4233 break;
4234 }
4235 chr = qemu_chr_open_mux(base);
4236 break;
f5a51cab
GH		 4237 case CHARDEV_BACKEND_KIND_MSMOUSE:
4238 chr = qemu_chr_open_msmouse();
4239 break;
2d57286d
GH		 4240#ifdef CONFIG_BRLAPI
4241 case CHARDEV_BACKEND_KIND_BRAILLE:
4242 chr = chr_baum_init();
4243 break;
4244#endif
5692399f
PB		 4245 case CHARDEV_BACKEND_KIND_TESTDEV:
4246 chr = chr_testdev_init();
4247 break;
7c358031
GH		 4248 case CHARDEV_BACKEND_KIND_STDIO:
4249 chr = qemu_chr_open_stdio(backend->stdio);
4250 break;
d9ac374f
GH		 4251#ifdef _WIN32
4252 case CHARDEV_BACKEND_KIND_CONSOLE:
4253 chr = qemu_chr_open_win_con();
4254 break;
cd153e2a
GH		 4255#endif
4256#ifdef CONFIG_SPICE
4257 case CHARDEV_BACKEND_KIND_SPICEVMC:
4258 chr = qemu_chr_open_spice_vmc(backend->spicevmc->type);
4259 break;
4260 case CHARDEV_BACKEND_KIND_SPICEPORT:
4261 chr = qemu_chr_open_spice_port(backend->spiceport->fqdn);
4262 break;
d9ac374f 4263#endif
702ec69c
GH		 4264 case CHARDEV_BACKEND_KIND_VC:
4265 chr = vc_init(backend->vc);
4266 break;
3a1da42e 4267 case CHARDEV_BACKEND_KIND_RINGBUF:
1da48c65 4268 case CHARDEV_BACKEND_KIND_MEMORY:
3a1da42e 4269 chr = qemu_chr_open_ringbuf(backend->ringbuf, errp);
1da48c65 4270 break;
f1a1a356
GH		 4271 default:
4272 error_setg(errp, "unknown chardev backend (%d)", backend->kind);
4273 break;
4274 }
4275
3894c787
MA		 4276 /*
4277 * Character backend open hasn't been fully converted to the Error
4278 * API. Some opens fail without setting an error. Set a generic
4279 * error then.
4280 * TODO full conversion to Error API
4281 */
4282 if (chr == NULL && errp && !*errp) {
f1a1a356
GH		 4283 error_setg(errp, "Failed to create chardev");
4284 }
4285 if (chr) {
4286 chr->label = g_strdup(id);
edb2fb3c
GH		 4287 chr->avail_connections =
4288 (backend->kind == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1;
60d95386
GH		 4289 if (!chr->filename) {
4290 chr->filename = g_strdup(ChardevBackendKind_lookup[backend->kind]);
4291 }
bd5c51ee
MR		 4292 if (!chr->explicit_be_open) {
4293 qemu_chr_be_event(chr, CHR_EVENT_OPENED);
4294 }
f1a1a356
GH		 4295 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
4296 return ret;
4297 } else {
4298 g_free(ret);
4299 return NULL;
4300 }
4301}
4302
4303void qmp_chardev_remove(const char *id, Error **errp)
4304{
4305 CharDriverState *chr;
4306
4307 chr = qemu_chr_find(id);
8108fd3e 4308 if (chr == NULL) {
f1a1a356
GH		 4309 error_setg(errp, "Chardev '%s' not found", id);
4310 return;
4311 }
4312 if (chr->chr_can_read || chr->chr_read ||
4313 chr->chr_event || chr->handler_opaque) {
4314 error_setg(errp, "Chardev '%s' is busy", id);
4315 return;
4316 }
4317 qemu_chr_delete(chr);
4318}
d654f34e
AL		 4319
4320static void register_types(void)
4321{
e4d50d47
PM		 4322 register_char_driver("null", CHARDEV_BACKEND_KIND_NULL, NULL);
4323 register_char_driver("socket", CHARDEV_BACKEND_KIND_SOCKET,
4324 qemu_chr_parse_socket);
4325 register_char_driver("udp", CHARDEV_BACKEND_KIND_UDP, qemu_chr_parse_udp);
4326 register_char_driver("ringbuf", CHARDEV_BACKEND_KIND_RINGBUF,
4327 qemu_chr_parse_ringbuf);
4328 register_char_driver("file", CHARDEV_BACKEND_KIND_FILE,
4329 qemu_chr_parse_file_out);
4330 register_char_driver("stdio", CHARDEV_BACKEND_KIND_STDIO,
4331 qemu_chr_parse_stdio);
4332 register_char_driver("serial", CHARDEV_BACKEND_KIND_SERIAL,
4333 qemu_chr_parse_serial);
4334 register_char_driver("tty", CHARDEV_BACKEND_KIND_SERIAL,
4335 qemu_chr_parse_serial);
4336 register_char_driver("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
4337 qemu_chr_parse_parallel);
4338 register_char_driver("parport", CHARDEV_BACKEND_KIND_PARALLEL,
4339 qemu_chr_parse_parallel);
4340 register_char_driver("pty", CHARDEV_BACKEND_KIND_PTY, NULL);
4341 register_char_driver("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL);
4342 register_char_driver("pipe", CHARDEV_BACKEND_KIND_PIPE,
4343 qemu_chr_parse_pipe);
4344 register_char_driver("mux", CHARDEV_BACKEND_KIND_MUX, qemu_chr_parse_mux);
c11ed966 4345 /* Bug-compatibility: */
e4d50d47
PM		 4346 register_char_driver("memory", CHARDEV_BACKEND_KIND_MEMORY,
4347 qemu_chr_parse_ringbuf);
7b7ab18d
MR		 4348 /* this must be done after machine init, since we register FEs with muxes
4349 * as part of realize functions like serial_isa_realizefn when -nographic
4350 * is specified
4351 */
4352 qemu_add_machine_init_done_notifier(&muxes_realize_notify);
d654f34e
AL		 4353}
4354
4355type_init(register_types);
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