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fw_cfg: add documentation file (docs/specs/fw_cfg.txt)
[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
c4095726 91#define TCP_MAX_FDS 16
9bd7854e 92
cfb429cb
CM		 93/***********************************************************/
94/* Socket address helpers */
95static void qapi_copy_SocketAddress(SocketAddress **p_dest,
96 SocketAddress *src)
97{
98 QmpOutputVisitor *qov;
99 QmpInputVisitor *qiv;
100 Visitor *ov, *iv;
101 QObject *obj;
102
103 *p_dest = NULL;
104
105 qov = qmp_output_visitor_new();
106 ov = qmp_output_get_visitor(qov);
107 visit_type_SocketAddress(ov, &src, NULL, &error_abort);
108 obj = qmp_output_get_qobject(qov);
109 qmp_output_visitor_cleanup(qov);
110 if (!obj) {
111 return;
112 }
113
114 qiv = qmp_input_visitor_new(obj);
115 iv = qmp_input_get_visitor(qiv);
116 visit_type_SocketAddress(iv, p_dest, NULL, &error_abort);
117 qmp_input_visitor_cleanup(qiv);
118 qobject_decref(obj);
119}
120
16cc4ffe
CM		 121static int SocketAddress_to_str(char *dest, int max_len,
122 const char *prefix, SocketAddress *addr,
123 bool is_listen, bool is_telnet)
124{
125 switch (addr->kind) {
126 case SOCKET_ADDRESS_KIND_INET:
127 return snprintf(dest, max_len, "%s%s:%s:%s%s", prefix,
128 is_telnet ? "telnet" : "tcp", addr->inet->host,
129 addr->inet->port, is_listen ? ",server" : "");
130 break;
131 case SOCKET_ADDRESS_KIND_UNIX:
132 return snprintf(dest, max_len, "%sunix:%s%s", prefix,
133 addr->q_unix->path, is_listen ? ",server" : "");
134 break;
135 case SOCKET_ADDRESS_KIND_FD:
136 return snprintf(dest, max_len, "%sfd:%s%s", prefix, addr->fd->str,
137 is_listen ? ",server" : "");
138 break;
139 default:
140 abort();
141 }
142}
143
144static int sockaddr_to_str(char *dest, int max_len,
145 struct sockaddr_storage *ss, socklen_t ss_len,
01ca519f 146 struct sockaddr_storage *ps, socklen_t ps_len,
16cc4ffe
CM		 147 bool is_listen, bool is_telnet)
148{
01ca519f
CM		 149 char shost[NI_MAXHOST], sserv[NI_MAXSERV];
150 char phost[NI_MAXHOST], pserv[NI_MAXSERV];
16cc4ffe
CM		 151 const char *left = "", *right = "";
152
153 switch (ss->ss_family) {
154#ifndef _WIN32
155 case AF_UNIX:
156 return snprintf(dest, max_len, "unix:%s%s",
157 ((struct sockaddr_un *)(ss))->sun_path,
158 is_listen ? ",server" : "");
159#endif
160 case AF_INET6:
161 left = "[";
162 right = "]";
163 /* fall through */
164 case AF_INET:
01ca519f
CM		 165 getnameinfo((struct sockaddr *) ss, ss_len, shost, sizeof(shost),
166 sserv, sizeof(sserv), NI_NUMERICHOST | NI_NUMERICSERV);
167 getnameinfo((struct sockaddr *) ps, ps_len, phost, sizeof(phost),
168 pserv, sizeof(pserv), NI_NUMERICHOST | NI_NUMERICSERV);
169 return snprintf(dest, max_len, "%s:%s%s%s:%s%s <-> %s%s%s:%s",
16cc4ffe 170 is_telnet ? "telnet" : "tcp",
01ca519f
CM		 171 left, shost, right, sserv,
172 is_listen ? ",server" : "",
173 left, phost, right, pserv);
16cc4ffe
CM		 174
175 default:
176 return snprintf(dest, max_len, "unknown");
177 }
178}
179
6f97dba0
AL		 180/***********************************************************/
181/* character device */
182
72cf2d4f
BS		 183static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
184 QTAILQ_HEAD_INITIALIZER(chardevs);
2970a6c9 185
db39fcf1
PB		 186CharDriverState *qemu_chr_alloc(void)
187{
188 CharDriverState *chr = g_malloc0(sizeof(CharDriverState));
f3db17b9 189 qemu_mutex_init(&chr->chr_write_lock);
db39fcf1
PB		 190 return chr;
191}
192
a425d23f 193void qemu_chr_be_event(CharDriverState *s, int event)
6f97dba0 194{
73cdf3f2
AG		 195 /* Keep track if the char device is open */
196 switch (event) {
197 case CHR_EVENT_OPENED:
16665b94 198 s->be_open = 1;
73cdf3f2
AG		 199 break;
200 case CHR_EVENT_CLOSED:
16665b94 201 s->be_open = 0;
73cdf3f2
AG		 202 break;
203 }
204
6f97dba0
AL		 205 if (!s->chr_event)
206 return;
207 s->chr_event(s->handler_opaque, event);
208}
209
fee204fd 210void qemu_chr_be_generic_open(CharDriverState *s)
6f97dba0 211{
bd5c51ee 212 qemu_chr_be_event(s, CHR_EVENT_OPENED);
6f97dba0
AL		 213}
214
2cc6e0a1 215int qemu_chr_fe_write(CharDriverState *s, const uint8_t *buf, int len)
6f97dba0 216{
9005b2a7
PB		 217 int ret;
218
219 qemu_mutex_lock(&s->chr_write_lock);
220 ret = s->chr_write(s, buf, len);
221 qemu_mutex_unlock(&s->chr_write_lock);
222 return ret;
6f97dba0
AL		 223}
224
cd18720a
AL		 225int qemu_chr_fe_write_all(CharDriverState *s, const uint8_t *buf, int len)
226{
227 int offset = 0;
09313047 228 int res = 0;
cd18720a 229
9005b2a7 230 qemu_mutex_lock(&s->chr_write_lock);
cd18720a
AL		 231 while (offset < len) {
232 do {
233 res = s->chr_write(s, buf + offset, len - offset);
234 if (res == -1 && errno == EAGAIN) {
235 g_usleep(100);
236 }
237 } while (res == -1 && errno == EAGAIN);
238
9005b2a7 239 if (res <= 0) {
cd18720a
AL		 240 break;
241 }
242
cd18720a
AL		 243 offset += res;
244 }
9005b2a7 245 qemu_mutex_unlock(&s->chr_write_lock);
cd18720a 246
9005b2a7
PB		 247 if (res < 0) {
248 return res;
249 }
cd18720a
AL		 250 return offset;
251}
252
7b0bfdf5
NN		 253int qemu_chr_fe_read_all(CharDriverState *s, uint8_t *buf, int len)
254{
255 int offset = 0, counter = 10;
256 int res;
257
258 if (!s->chr_sync_read) {
259 return 0;
260 }
261
262 while (offset < len) {
263 do {
264 res = s->chr_sync_read(s, buf + offset, len - offset);
265 if (res == -1 && errno == EAGAIN) {
266 g_usleep(100);
267 }
268 } while (res == -1 && errno == EAGAIN);
269
270 if (res == 0) {
271 break;
272 }
273
274 if (res < 0) {
275 return res;
276 }
277
278 offset += res;
279
280 if (!counter--) {
281 break;
282 }
283 }
284
285 return offset;
286}
287
41084f1b 288int qemu_chr_fe_ioctl(CharDriverState *s, int cmd, void *arg)
6f97dba0
AL		 289{
290 if (!s->chr_ioctl)
291 return -ENOTSUP;
292 return s->chr_ioctl(s, cmd, arg);
293}
294
909cda12 295int qemu_chr_be_can_write(CharDriverState *s)
6f97dba0
AL		 296{
297 if (!s->chr_can_read)
298 return 0;
299 return s->chr_can_read(s->handler_opaque);
300}
301
fa5efccb 302void qemu_chr_be_write(CharDriverState *s, uint8_t *buf, int len)
6f97dba0 303{
ac310734
SW		 304 if (s->chr_read) {
305 s->chr_read(s->handler_opaque, buf, len);
306 }
6f97dba0
AL		 307}
308
74c0d6f0 309int qemu_chr_fe_get_msgfd(CharDriverState *s)
7d174059 310{
c76bf6bb 311 int fd;
4f858614 312 return (qemu_chr_fe_get_msgfds(s, &fd, 1) == 1) ? fd : -1;
c76bf6bb
NN		 313}
314
315int qemu_chr_fe_get_msgfds(CharDriverState *s, int *fds, int len)
316{
317 return s->get_msgfds ? s->get_msgfds(s, fds, len) : -1;
7d174059
MM		 318}
319
d39aac7a
NN		 320int qemu_chr_fe_set_msgfds(CharDriverState *s, int *fds, int num)
321{
322 return s->set_msgfds ? s->set_msgfds(s, fds, num) : -1;
323}
324
13661089
DB		 325int qemu_chr_add_client(CharDriverState *s, int fd)
326{
327 return s->chr_add_client ? s->chr_add_client(s, fd) : -1;
328}
329
6f97dba0
AL		 330void qemu_chr_accept_input(CharDriverState *s)
331{
332 if (s->chr_accept_input)
333 s->chr_accept_input(s);
98c8ee1d 334 qemu_notify_event();
6f97dba0
AL		 335}
336
e7e71b0e 337void qemu_chr_fe_printf(CharDriverState *s, const char *fmt, ...)
6f97dba0 338{
9bd7854e 339 char buf[READ_BUF_LEN];
6f97dba0
AL		 340 va_list ap;
341 va_start(ap, fmt);
342 vsnprintf(buf, sizeof(buf), fmt, ap);
2cc6e0a1 343 qemu_chr_fe_write(s, (uint8_t *)buf, strlen(buf));
6f97dba0
AL		 344 va_end(ap);
345}
346
386a5a1e
AS		 347static void remove_fd_in_watch(CharDriverState *chr);
348
6f97dba0 349void qemu_chr_add_handlers(CharDriverState *s,
7b27a769 350 IOCanReadHandler *fd_can_read,
6f97dba0
AL		 351 IOReadHandler *fd_read,
352 IOEventHandler *fd_event,
353 void *opaque)
354{
19083228
HG		 355 int fe_open;
356
da7d998b 357 if (!opaque && !fd_can_read && !fd_read && !fd_event) {
19083228 358 fe_open = 0;
386a5a1e 359 remove_fd_in_watch(s);
19083228
HG		 360 } else {
361 fe_open = 1;
2d6c1ef4 362 }
6f97dba0
AL		 363 s->chr_can_read = fd_can_read;
364 s->chr_read = fd_read;
365 s->chr_event = fd_event;
366 s->handler_opaque = opaque;
ac1b84dd 367 if (fe_open && s->chr_update_read_handler)
6f97dba0 368 s->chr_update_read_handler(s);
73cdf3f2 369
19083228 370 if (!s->explicit_fe_open) {
8e25daa8 371 qemu_chr_fe_set_open(s, fe_open);
19083228
HG		 372 }
373
73cdf3f2
AG		 374 /* We're connecting to an already opened device, so let's make sure we
375 also get the open event */
a59bcd31 376 if (fe_open && s->be_open) {
fee204fd 377 qemu_chr_be_generic_open(s);
73cdf3f2 378 }
6f97dba0
AL		 379}
380
381static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
382{
383 return len;
384}
385
80dca9e6 386static CharDriverState *qemu_chr_open_null(void)
6f97dba0
AL		 387{
388 CharDriverState *chr;
389
db39fcf1 390 chr = qemu_chr_alloc();
6f97dba0 391 chr->chr_write = null_chr_write;
bd5c51ee 392 chr->explicit_be_open = true;
1f51470d 393 return chr;
6f97dba0
AL		 394}
395
396/* MUX driver for serial I/O splitting */
6f97dba0
AL		 397#define MAX_MUX 4
398#define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
399#define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
400typedef struct {
7b27a769 401 IOCanReadHandler *chr_can_read[MAX_MUX];
6f97dba0
AL		 402 IOReadHandler *chr_read[MAX_MUX];
403 IOEventHandler *chr_event[MAX_MUX];
404 void *ext_opaque[MAX_MUX];
405 CharDriverState *drv;
799f1f23 406 int focus;
6f97dba0
AL		 407 int mux_cnt;
408 int term_got_escape;
409 int max_size;
a80bf99f
AL		 410 /* Intermediate input buffer allows to catch escape sequences even if the
411 currently active device is not accepting any input - but only until it
412 is full as well. */
413 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
414 int prod[MAX_MUX];
415 int cons[MAX_MUX];
2d22959d 416 int timestamps;
9005b2a7
PB		 417
418 /* Protected by the CharDriverState chr_write_lock. */
4ab312f7 419 int linestart;
2d22959d 420 int64_t timestamps_start;
6f97dba0
AL		 421} MuxDriver;
422
423
9005b2a7 424/* Called with chr_write_lock held. */
6f97dba0
AL		 425static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
426{
427 MuxDriver *d = chr->opaque;
428 int ret;
2d22959d 429 if (!d->timestamps) {
6975b713 430 ret = qemu_chr_fe_write(d->drv, buf, len);
6f97dba0
AL		 431 } else {
432 int i;
433
434 ret = 0;
4ab312f7
JK		 435 for (i = 0; i < len; i++) {
436 if (d->linestart) {
6f97dba0
AL		 437 char buf1[64];
438 int64_t ti;
439 int secs;
440
bc72ad67 441 ti = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
2d22959d
JK		 442 if (d->timestamps_start == -1)
443 d->timestamps_start = ti;
444 ti -= d->timestamps_start;
a4bb1db8 445 secs = ti / 1000;
6f97dba0
AL		 446 snprintf(buf1, sizeof(buf1),
447 "[%02d:%02d:%02d.%03d] ",
448 secs / 3600,
449 (secs / 60) % 60,
450 secs % 60,
a4bb1db8 451 (int)(ti % 1000));
6975b713 452 qemu_chr_fe_write(d->drv, (uint8_t *)buf1, strlen(buf1));
4ab312f7
JK		 453 d->linestart = 0;
454 }
6975b713 455 ret += qemu_chr_fe_write(d->drv, buf+i, 1);
4ab312f7
JK		 456 if (buf[i] == '\n') {
457 d->linestart = 1;
6f97dba0
AL		 458 }
459 }
460 }
461 return ret;
462}
463
464static const char * const mux_help[] = {
465 "% h print this help\n\r",
466 "% x exit emulator\n\r",
467 "% s save disk data back to file (if -snapshot)\n\r",
86d10328 468 "% t toggle console timestamps\n\r",
6f97dba0
AL		 469 "% b send break (magic sysrq)\n\r",
470 "% c switch between console and monitor\n\r",
471 "% % sends %\n\r",
472 NULL
473};
474
475int term_escape_char = 0x01; /* ctrl-a is used for escape */
476static void mux_print_help(CharDriverState *chr)
477{
478 int i, j;
479 char ebuf[15] = "Escape-Char";
480 char cbuf[50] = "\n\r";
481
482 if (term_escape_char > 0 && term_escape_char < 26) {
483 snprintf(cbuf, sizeof(cbuf), "\n\r");
484 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
485 } else {
486 snprintf(cbuf, sizeof(cbuf),
487 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
488 term_escape_char);
489 }
6975b713 490 qemu_chr_fe_write(chr, (uint8_t *)cbuf, strlen(cbuf));
6f97dba0
AL		 491 for (i = 0; mux_help[i] != NULL; i++) {
492 for (j=0; mux_help[i][j] != '\0'; j++) {
493 if (mux_help[i][j] == '%')
6975b713 494 qemu_chr_fe_write(chr, (uint8_t *)ebuf, strlen(ebuf));
6f97dba0 495 else
6975b713 496 qemu_chr_fe_write(chr, (uint8_t *)&mux_help[i][j], 1);
6f97dba0
AL		 497 }
498 }
499}
500
2724b180
AL		 501static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
502{
503 if (d->chr_event[mux_nr])
504 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
505}
506
6f97dba0
AL		 507static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
508{
509 if (d->term_got_escape) {
510 d->term_got_escape = 0;
511 if (ch == term_escape_char)
512 goto send_char;
513 switch(ch) {
514 case '?':
515 case 'h':
516 mux_print_help(chr);
517 break;
518 case 'x':
519 {
520 const char *term = "QEMU: Terminated\n\r";
6975b713 521 qemu_chr_fe_write(chr, (uint8_t *)term, strlen(term));
6f97dba0
AL		 522 exit(0);
523 break;
524 }
525 case 's':
6ab4b5ab 526 bdrv_commit_all();
6f97dba0
AL		 527 break;
528 case 'b':
a425d23f 529 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
6f97dba0
AL		 530 break;
531 case 'c':
532 /* Switch to the next registered device */
799f1f23
GH		 533 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
534 d->focus++;
535 if (d->focus >= d->mux_cnt)
536 d->focus = 0;
537 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
6f97dba0 538 break;
2d22959d
JK		 539 case 't':
540 d->timestamps = !d->timestamps;
541 d->timestamps_start = -1;
4ab312f7 542 d->linestart = 0;
2d22959d 543 break;
6f97dba0
AL		 544 }
545 } else if (ch == term_escape_char) {
546 d->term_got_escape = 1;
547 } else {
548 send_char:
549 return 1;
550 }
551 return 0;
552}
553
554static void mux_chr_accept_input(CharDriverState *chr)
555{
6f97dba0 556 MuxDriver *d = chr->opaque;
799f1f23 557 int m = d->focus;
6f97dba0 558
a80bf99f 559 while (d->prod[m] != d->cons[m] &&
6f97dba0
AL		 560 d->chr_can_read[m] &&
561 d->chr_can_read[m](d->ext_opaque[m])) {
562 d->chr_read[m](d->ext_opaque[m],
a80bf99f 563 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
6f97dba0
AL		 564 }
565}
566
567static int mux_chr_can_read(void *opaque)
568{
569 CharDriverState *chr = opaque;
570 MuxDriver *d = chr->opaque;
799f1f23 571 int m = d->focus;
6f97dba0 572
a80bf99f 573 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
6f97dba0 574 return 1;
a80bf99f
AL		 575 if (d->chr_can_read[m])
576 return d->chr_can_read[m](d->ext_opaque[m]);
6f97dba0
AL		 577 return 0;
578}
579
580static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
581{
582 CharDriverState *chr = opaque;
583 MuxDriver *d = chr->opaque;
799f1f23 584 int m = d->focus;
6f97dba0
AL		 585 int i;
586
587 mux_chr_accept_input (opaque);
588
589 for(i = 0; i < size; i++)
590 if (mux_proc_byte(chr, d, buf[i])) {
a80bf99f 591 if (d->prod[m] == d->cons[m] &&
6f97dba0
AL		 592 d->chr_can_read[m] &&
593 d->chr_can_read[m](d->ext_opaque[m]))
594 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
595 else
a80bf99f 596 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
6f97dba0
AL		 597 }
598}
599
600static void mux_chr_event(void *opaque, int event)
601{
602 CharDriverState *chr = opaque;
603 MuxDriver *d = chr->opaque;
604 int i;
605
606 /* Send the event to all registered listeners */
607 for (i = 0; i < d->mux_cnt; i++)
2724b180 608 mux_chr_send_event(d, i, event);
6f97dba0
AL		 609}
610
611static void mux_chr_update_read_handler(CharDriverState *chr)
612{
613 MuxDriver *d = chr->opaque;
614
615 if (d->mux_cnt >= MAX_MUX) {
616 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
617 return;
618 }
619 d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
620 d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
621 d->chr_read[d->mux_cnt] = chr->chr_read;
622 d->chr_event[d->mux_cnt] = chr->chr_event;
623 /* Fix up the real driver with mux routines */
624 if (d->mux_cnt == 0) {
625 qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
626 mux_chr_event, chr);
627 }
799f1f23
GH		 628 if (d->focus != -1) {
629 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
a7aec5da 630 }
799f1f23 631 d->focus = d->mux_cnt;
6f97dba0 632 d->mux_cnt++;
799f1f23 633 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
6f97dba0
AL		 634}
635
7b7ab18d
MR		 636static bool muxes_realized;
637
638/**
639 * Called after processing of default and command-line-specified
640 * chardevs to deliver CHR_EVENT_OPENED events to any FEs attached
641 * to a mux chardev. This is done here to ensure that
642 * output/prompts/banners are only displayed for the FE that has
643 * focus when initial command-line processing/machine init is
644 * completed.
645 *
646 * After this point, any new FE attached to any new or existing
647 * mux will receive CHR_EVENT_OPENED notifications for the BE
648 * immediately.
649 */
650static void muxes_realize_done(Notifier *notifier, void *unused)
651{
652 CharDriverState *chr;
653
654 QTAILQ_FOREACH(chr, &chardevs, next) {
655 if (chr->is_mux) {
656 MuxDriver *d = chr->opaque;
657 int i;
658
659 /* send OPENED to all already-attached FEs */
660 for (i = 0; i < d->mux_cnt; i++) {
661 mux_chr_send_event(d, i, CHR_EVENT_OPENED);
662 }
663 /* mark mux as OPENED so any new FEs will immediately receive
664 * OPENED event
665 */
666 qemu_chr_be_generic_open(chr);
667 }
668 }
669 muxes_realized = true;
670}
671
672static Notifier muxes_realize_notify = {
673 .notify = muxes_realize_done,
674};
675
3f0838ab
KB		 676static GSource *mux_chr_add_watch(CharDriverState *s, GIOCondition cond)
677{
678 MuxDriver *d = s->opaque;
679 return d->drv->chr_add_watch(d->drv, cond);
680}
681
6f97dba0
AL		 682static CharDriverState *qemu_chr_open_mux(CharDriverState *drv)
683{
684 CharDriverState *chr;
685 MuxDriver *d;
686
db39fcf1 687 chr = qemu_chr_alloc();
7267c094 688 d = g_malloc0(sizeof(MuxDriver));
6f97dba0
AL		 689
690 chr->opaque = d;
691 d->drv = drv;
799f1f23 692 d->focus = -1;
6f97dba0
AL		 693 chr->chr_write = mux_chr_write;
694 chr->chr_update_read_handler = mux_chr_update_read_handler;
695 chr->chr_accept_input = mux_chr_accept_input;
7c32c4fe 696 /* Frontend guest-open / -close notification is not support with muxes */
574b711a 697 chr->chr_set_fe_open = NULL;
3f0838ab
KB		 698 if (drv->chr_add_watch) {
699 chr->chr_add_watch = mux_chr_add_watch;
700 }
7b7ab18d
MR		 701 /* only default to opened state if we've realized the initial
702 * set of muxes
703 */
704 chr->explicit_be_open = muxes_realized ? 0 : 1;
705 chr->is_mux = 1;
73cdf3f2 706
6f97dba0
AL		 707 return chr;
708}
709
710
711#ifdef _WIN32
d247d25f 712int send_all(int fd, const void *buf, int len1)
6f97dba0
AL		 713{
714 int ret, len;
715
716 len = len1;
717 while (len > 0) {
718 ret = send(fd, buf, len, 0);
719 if (ret < 0) {
6f97dba0
AL		 720 errno = WSAGetLastError();
721 if (errno != WSAEWOULDBLOCK) {
722 return -1;
723 }
724 } else if (ret == 0) {
725 break;
726 } else {
727 buf += ret;
728 len -= ret;
729 }
730 }
731 return len1 - len;
732}
733
734#else
735
5fc9cfed 736int send_all(int fd, const void *_buf, int len1)
6f97dba0
AL		 737{
738 int ret, len;
5fc9cfed 739 const uint8_t *buf = _buf;
6f97dba0
AL		 740
741 len = len1;
742 while (len > 0) {
743 ret = write(fd, buf, len);
744 if (ret < 0) {
745 if (errno != EINTR && errno != EAGAIN)
746 return -1;
747 } else if (ret == 0) {
748 break;
749 } else {
750 buf += ret;
751 len -= ret;
752 }
753 }
754 return len1 - len;
755}
4549a8b7
SB		 756
757int recv_all(int fd, void *_buf, int len1, bool single_read)
758{
759 int ret, len;
760 uint8_t *buf = _buf;
761
762 len = len1;
763 while ((len > 0) && (ret = read(fd, buf, len)) != 0) {
764 if (ret < 0) {
765 if (errno != EINTR && errno != EAGAIN) {
766 return -1;
767 }
768 continue;
769 } else {
770 if (single_read) {
771 return ret;
772 }
773 buf += ret;
774 len -= ret;
775 }
776 }
777 return len1 - len;
778}
779
6f97dba0
AL		 780#endif /* !_WIN32 */
781
96c63847
AL		 782typedef struct IOWatchPoll
783{
d185c094
PB		 784 GSource parent;
785
1e885b25 786 GIOChannel *channel;
96c63847 787 GSource *src;
96c63847
AL		 788
789 IOCanReadHandler *fd_can_read;
1e885b25 790 GSourceFunc fd_read;
96c63847 791 void *opaque;
96c63847
AL		 792} IOWatchPoll;
793
96c63847
AL		 794static IOWatchPoll *io_watch_poll_from_source(GSource *source)
795{
d185c094 796 return container_of(source, IOWatchPoll, parent);
96c63847
AL		 797}
798
799static gboolean io_watch_poll_prepare(GSource *source, gint *timeout_)
800{
801 IOWatchPoll *iwp = io_watch_poll_from_source(source);
d185c094 802 bool now_active = iwp->fd_can_read(iwp->opaque) > 0;
1e885b25 803 bool was_active = iwp->src != NULL;
d185c094 804 if (was_active == now_active) {
96c63847
AL		 805 return FALSE;
806 }
807
d185c094 808 if (now_active) {
1e885b25
PB		 809 iwp->src = g_io_create_watch(iwp->channel, G_IO_IN | G_IO_ERR | G_IO_HUP);
810 g_source_set_callback(iwp->src, iwp->fd_read, iwp->opaque, NULL);
d185c094
PB		 811 g_source_attach(iwp->src, NULL);
812 } else {
1e885b25
PB		 813 g_source_destroy(iwp->src);
814 g_source_unref(iwp->src);
815 iwp->src = NULL;
d185c094
PB		 816 }
817 return FALSE;
96c63847
AL		 818}
819
820static gboolean io_watch_poll_check(GSource *source)
821{
d185c094 822 return FALSE;
96c63847
AL		 823}
824
825static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
826 gpointer user_data)
827{
d185c094 828 abort();
96c63847
AL		 829}
830
831static void io_watch_poll_finalize(GSource *source)
832{
2b316774
PB		 833 /* Due to a glib bug, removing the last reference to a source
834 * inside a finalize callback causes recursive locking (and a
835 * deadlock). This is not a problem inside other callbacks,
836 * including dispatch callbacks, so we call io_remove_watch_poll
837 * to remove this source. At this point, iwp->src must
838 * be NULL, or we would leak it.
839 *
840 * This would be solved much more elegantly by child sources,
841 * but we support older glib versions that do not have them.
842 */
96c63847 843 IOWatchPoll *iwp = io_watch_poll_from_source(source);
2b316774 844 assert(iwp->src == NULL);
96c63847
AL		 845}
846
847static GSourceFuncs io_watch_poll_funcs = {
848 .prepare = io_watch_poll_prepare,
849 .check = io_watch_poll_check,
850 .dispatch = io_watch_poll_dispatch,
851 .finalize = io_watch_poll_finalize,
852};
853
854/* Can only be used for read */
855static guint io_add_watch_poll(GIOChannel *channel,
856 IOCanReadHandler *fd_can_read,
857 GIOFunc fd_read,
858 gpointer user_data)
859{
860 IOWatchPoll *iwp;
0ca5aa4f 861 int tag;
96c63847 862
d185c094 863 iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs, sizeof(IOWatchPoll));
96c63847
AL		 864 iwp->fd_can_read = fd_can_read;
865 iwp->opaque = user_data;
1e885b25
PB		 866 iwp->channel = channel;
867 iwp->fd_read = (GSourceFunc) fd_read;
868 iwp->src = NULL;
96c63847 869
0ca5aa4f
PB		 870 tag = g_source_attach(&iwp->parent, NULL);
871 g_source_unref(&iwp->parent);
872 return tag;
96c63847
AL		 873}
874
2b316774
PB		 875static void io_remove_watch_poll(guint tag)
876{
877 GSource *source;
878 IOWatchPoll *iwp;
879
880 g_return_if_fail (tag > 0);
881
882 source = g_main_context_find_source_by_id(NULL, tag);
883 g_return_if_fail (source != NULL);
884
885 iwp = io_watch_poll_from_source(source);
886 if (iwp->src) {
887 g_source_destroy(iwp->src);
888 g_source_unref(iwp->src);
889 iwp->src = NULL;
890 }
891 g_source_destroy(&iwp->parent);
892}
893
26da70c7
AS		 894static void remove_fd_in_watch(CharDriverState *chr)
895{
896 if (chr->fd_in_tag) {
897 io_remove_watch_poll(chr->fd_in_tag);
898 chr->fd_in_tag = 0;
899 }
900}
901
44ab9ed4 902#ifndef _WIN32
96c63847
AL		 903static GIOChannel *io_channel_from_fd(int fd)
904{
905 GIOChannel *chan;
906
907 if (fd == -1) {
908 return NULL;
909 }
910
911 chan = g_io_channel_unix_new(fd);
912
913 g_io_channel_set_encoding(chan, NULL, NULL);
914 g_io_channel_set_buffered(chan, FALSE);
915
916 return chan;
917}
44ab9ed4 918#endif
96c63847 919
76a9644b
AL		 920static GIOChannel *io_channel_from_socket(int fd)
921{
922 GIOChannel *chan;
923
924 if (fd == -1) {
925 return NULL;
926 }
927
928#ifdef _WIN32
929 chan = g_io_channel_win32_new_socket(fd);
930#else
931 chan = g_io_channel_unix_new(fd);
932#endif
933
934 g_io_channel_set_encoding(chan, NULL, NULL);
935 g_io_channel_set_buffered(chan, FALSE);
936
937 return chan;
938}
939
684a096e 940static int io_channel_send(GIOChannel *fd, const void *buf, size_t len)
96c63847 941{
ac8c26f6
LE		 942 size_t offset = 0;
943 GIOStatus status = G_IO_STATUS_NORMAL;
96c63847 944
ac8c26f6
LE		 945 while (offset < len && status == G_IO_STATUS_NORMAL) {
946 gsize bytes_written = 0;
684a096e
AL		 947
948 status = g_io_channel_write_chars(fd, buf + offset, len - offset,
96c63847 949 &bytes_written, NULL);
684a096e 950 offset += bytes_written;
96c63847 951 }
684a096e 952
ac8c26f6
LE		 953 if (offset > 0) {
954 return offset;
955 }
956 switch (status) {
957 case G_IO_STATUS_NORMAL:
958 g_assert(len == 0);
959 return 0;
960 case G_IO_STATUS_AGAIN:
961 errno = EAGAIN;
962 return -1;
963 default:
964 break;
965 }
966 errno = EINVAL;
967 return -1;
96c63847 968}
96c63847 969
44ab9ed4
BS		 970#ifndef _WIN32
971
a29753f8
AL		 972typedef struct FDCharDriver {
973 CharDriverState *chr;
974 GIOChannel *fd_in, *fd_out;
6f97dba0 975 int max_size;
a29753f8 976 QTAILQ_ENTRY(FDCharDriver) node;
6f97dba0
AL		 977} FDCharDriver;
978
9005b2a7 979/* Called with chr_write_lock held. */
6f97dba0
AL		 980static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
981{
982 FDCharDriver *s = chr->opaque;
a29753f8 983
684a096e 984 return io_channel_send(s->fd_out, buf, len);
6f97dba0
AL		 985}
986
a29753f8 987static gboolean fd_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 988{
989 CharDriverState *chr = opaque;
990 FDCharDriver *s = chr->opaque;
a29753f8 991 int len;
9bd7854e 992 uint8_t buf[READ_BUF_LEN];
a29753f8
AL		 993 GIOStatus status;
994 gsize bytes_read;
6f97dba0
AL		 995
996 len = sizeof(buf);
a29753f8 997 if (len > s->max_size) {
6f97dba0 998 len = s->max_size;
a29753f8
AL		 999 }
1000 if (len == 0) {
cdbf6e16 1001 return TRUE;
a29753f8
AL		 1002 }
1003
1004 status = g_io_channel_read_chars(chan, (gchar *)buf,
1005 len, &bytes_read, NULL);
1006 if (status == G_IO_STATUS_EOF) {
26da70c7 1007 remove_fd_in_watch(chr);
a425d23f 1008 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
a29753f8 1009 return FALSE;
6f97dba0 1010 }
a29753f8
AL		 1011 if (status == G_IO_STATUS_NORMAL) {
1012 qemu_chr_be_write(chr, buf, bytes_read);
6f97dba0 1013 }
a29753f8
AL		 1014
1015 return TRUE;
1016}
1017
1018static int fd_chr_read_poll(void *opaque)
1019{
1020 CharDriverState *chr = opaque;
1021 FDCharDriver *s = chr->opaque;
1022
1023 s->max_size = qemu_chr_be_can_write(chr);
1024 return s->max_size;
6f97dba0
AL		 1025}
1026
23673ca7
AL		 1027static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1028{
1029 FDCharDriver *s = chr->opaque;
1030 return g_io_create_watch(s->fd_out, cond);
1031}
1032
6f97dba0
AL		 1033static void fd_chr_update_read_handler(CharDriverState *chr)
1034{
1035 FDCharDriver *s = chr->opaque;
1036
26da70c7 1037 remove_fd_in_watch(chr);
a29753f8 1038 if (s->fd_in) {
7ba9addc
AS		 1039 chr->fd_in_tag = io_add_watch_poll(s->fd_in, fd_chr_read_poll,
1040 fd_chr_read, chr);
6f97dba0
AL		 1041 }
1042}
1043
1044static void fd_chr_close(struct CharDriverState *chr)
1045{
1046 FDCharDriver *s = chr->opaque;
1047
26da70c7 1048 remove_fd_in_watch(chr);
a29753f8
AL		 1049 if (s->fd_in) {
1050 g_io_channel_unref(s->fd_in);
1051 }
1052 if (s->fd_out) {
1053 g_io_channel_unref(s->fd_out);
6f97dba0
AL		 1054 }
1055
7267c094 1056 g_free(s);
a425d23f 1057 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1058}
1059
1060/* open a character device to a unix fd */
1061static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
1062{
1063 CharDriverState *chr;
1064 FDCharDriver *s;
1065
db39fcf1 1066 chr = qemu_chr_alloc();
7267c094 1067 s = g_malloc0(sizeof(FDCharDriver));
a29753f8
AL		 1068 s->fd_in = io_channel_from_fd(fd_in);
1069 s->fd_out = io_channel_from_fd(fd_out);
4ff12bdb 1070 qemu_set_nonblock(fd_out);
a29753f8 1071 s->chr = chr;
6f97dba0 1072 chr->opaque = s;
23673ca7 1073 chr->chr_add_watch = fd_chr_add_watch;
6f97dba0
AL		 1074 chr->chr_write = fd_chr_write;
1075 chr->chr_update_read_handler = fd_chr_update_read_handler;
1076 chr->chr_close = fd_chr_close;
1077
6f97dba0
AL		 1078 return chr;
1079}
1080
548cbb36 1081static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
6f97dba0
AL		 1082{
1083 int fd_in, fd_out;
9f781168
CM		 1084 char filename_in[CHR_MAX_FILENAME_SIZE];
1085 char filename_out[CHR_MAX_FILENAME_SIZE];
548cbb36 1086 const char *filename = opts->device;
7d31544f
GH		 1087
1088 if (filename == NULL) {
1089 fprintf(stderr, "chardev: pipe: no filename given\n");
1f51470d 1090 return NULL;
7d31544f 1091 }
6f97dba0 1092
9f781168
CM		 1093 snprintf(filename_in, CHR_MAX_FILENAME_SIZE, "%s.in", filename);
1094 snprintf(filename_out, CHR_MAX_FILENAME_SIZE, "%s.out", filename);
40ff6d7e
KW		 1095 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
1096 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
6f97dba0
AL		 1097 if (fd_in < 0 || fd_out < 0) {
1098 if (fd_in >= 0)
1099 close(fd_in);
1100 if (fd_out >= 0)
1101 close(fd_out);
b181e047 1102 TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
a89dd6c3 1103 if (fd_in < 0) {
1f51470d 1104 return NULL;
a89dd6c3 1105 }
6f97dba0 1106 }
1f51470d 1107 return qemu_chr_open_fd(fd_in, fd_out);
6f97dba0
AL		 1108}
1109
6f97dba0
AL		 1110/* init terminal so that we can grab keys */
1111static struct termios oldtty;
1112static int old_fd0_flags;
c88930a6 1113static bool stdio_in_use;
bb002513 1114static bool stdio_allow_signal;
e76d4420
GH		 1115static bool stdio_echo_state;
1116
1117static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo);
6f97dba0
AL		 1118
1119static void term_exit(void)
1120{
1121 tcsetattr (0, TCSANOW, &oldtty);
1122 fcntl(0, F_SETFL, old_fd0_flags);
1123}
1124
e76d4420
GH		 1125static void term_stdio_handler(int sig)
1126{
1127 /* restore echo after resume from suspend. */
1128 qemu_chr_set_echo_stdio(NULL, stdio_echo_state);
1129}
1130
bb002513 1131static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
6f97dba0
AL		 1132{
1133 struct termios tty;
1134
e76d4420 1135 stdio_echo_state = echo;
0369364b 1136 tty = oldtty;
bb002513
PB		 1137 if (!echo) {
1138 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
6f97dba0 1139 |INLCR|IGNCR|ICRNL|IXON);
bb002513
PB		 1140 tty.c_oflag |= OPOST;
1141 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
1142 tty.c_cflag &= ~(CSIZE|PARENB);
1143 tty.c_cflag |= CS8;
1144 tty.c_cc[VMIN] = 1;
1145 tty.c_cc[VTIME] = 0;
1146 }
bb002513 1147 if (!stdio_allow_signal)
6f97dba0 1148 tty.c_lflag &= ~ISIG;
6f97dba0
AL		 1149
1150 tcsetattr (0, TCSANOW, &tty);
6f97dba0
AL		 1151}
1152
1153static void qemu_chr_close_stdio(struct CharDriverState *chr)
1154{
1155 term_exit();
6f97dba0
AL		 1156 fd_chr_close(chr);
1157}
1158
7c358031 1159static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
6f97dba0
AL		 1160{
1161 CharDriverState *chr;
e76d4420 1162 struct sigaction act;
6f97dba0 1163
ab51b1d5
MT		 1164 if (is_daemonized()) {
1165 error_report("cannot use stdio with -daemonize");
1166 return NULL;
1167 }
c88930a6
LL		 1168
1169 if (stdio_in_use) {
1170 error_report("cannot use stdio by multiple character devices");
1171 exit(1);
1172 }
1173
1174 stdio_in_use = true;
ed7a1540 1175 old_fd0_flags = fcntl(0, F_GETFL);
c88930a6 1176 tcgetattr(0, &oldtty);
4ff12bdb 1177 qemu_set_nonblock(0);
ed7a1540 1178 atexit(term_exit);
0369364b 1179
e76d4420
GH		 1180 memset(&act, 0, sizeof(act));
1181 act.sa_handler = term_stdio_handler;
1182 sigaction(SIGCONT, &act, NULL);
1183
6f97dba0
AL		 1184 chr = qemu_chr_open_fd(0, 1);
1185 chr->chr_close = qemu_chr_close_stdio;
bb002513 1186 chr->chr_set_echo = qemu_chr_set_echo_stdio;
7c358031
GH		 1187 if (opts->has_signal) {
1188 stdio_allow_signal = opts->signal;
1189 }
15f31519 1190 qemu_chr_fe_set_echo(chr, false);
6f97dba0 1191
1f51470d 1192 return chr;
6f97dba0
AL		 1193}
1194
6f97dba0 1195#if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
a167ba50
AJ		 1196 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
1197 || defined(__GLIBC__)
6f97dba0 1198
e551498e
GH		 1199#define HAVE_CHARDEV_TTY 1
1200
6f97dba0 1201typedef struct {
093d3a20 1202 GIOChannel *fd;
6f97dba0 1203 int read_bytes;
9005b2a7
PB		 1204
1205 /* Protected by the CharDriverState chr_write_lock. */
1206 int connected;
8aa33caf 1207 guint timer_tag;
7b3621f4 1208 guint open_tag;
6f97dba0
AL		 1209} PtyCharDriver;
1210
9005b2a7 1211static void pty_chr_update_read_handler_locked(CharDriverState *chr);
6f97dba0
AL		 1212static void pty_chr_state(CharDriverState *chr, int connected);
1213
8aa33caf
AL		 1214static gboolean pty_chr_timer(gpointer opaque)
1215{
1216 struct CharDriverState *chr = opaque;
1217 PtyCharDriver *s = chr->opaque;
1218
9005b2a7 1219 qemu_mutex_lock(&chr->chr_write_lock);
79f20075 1220 s->timer_tag = 0;
7b3621f4 1221 s->open_tag = 0;
b0d768c3
GH		 1222 if (!s->connected) {
1223 /* Next poll ... */
9005b2a7 1224 pty_chr_update_read_handler_locked(chr);
b0d768c3 1225 }
9005b2a7 1226 qemu_mutex_unlock(&chr->chr_write_lock);
8aa33caf
AL		 1227 return FALSE;
1228}
1229
9005b2a7 1230/* Called with chr_write_lock held. */
8aa33caf
AL		 1231static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
1232{
1233 PtyCharDriver *s = chr->opaque;
1234
1235 if (s->timer_tag) {
1236 g_source_remove(s->timer_tag);
1237 s->timer_tag = 0;
1238 }
1239
1240 if (ms == 1000) {
1241 s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
1242 } else {
1243 s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
1244 }
1245}
1246
9005b2a7
PB		 1247/* Called with chr_write_lock held. */
1248static void pty_chr_update_read_handler_locked(CharDriverState *chr)
1bb7fe72
PB		 1249{
1250 PtyCharDriver *s = chr->opaque;
1251 GPollFD pfd;
1252
1253 pfd.fd = g_io_channel_unix_get_fd(s->fd);
1254 pfd.events = G_IO_OUT;
1255 pfd.revents = 0;
1256 g_poll(&pfd, 1, 0);
1257 if (pfd.revents & G_IO_HUP) {
1258 pty_chr_state(chr, 0);
1259 } else {
1260 pty_chr_state(chr, 1);
1261 }
1262}
1263
9005b2a7
PB		 1264static void pty_chr_update_read_handler(CharDriverState *chr)
1265{
1266 qemu_mutex_lock(&chr->chr_write_lock);
1267 pty_chr_update_read_handler_locked(chr);
1268 qemu_mutex_unlock(&chr->chr_write_lock);
1269}
1270
1271/* Called with chr_write_lock held. */
6f97dba0
AL		 1272static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1273{
1274 PtyCharDriver *s = chr->opaque;
1275
1276 if (!s->connected) {
1277 /* guest sends data, check for (re-)connect */
9005b2a7 1278 pty_chr_update_read_handler_locked(chr);
cf7330c7
ST		 1279 if (!s->connected) {
1280 return 0;
1281 }
6f97dba0 1282 }
684a096e 1283 return io_channel_send(s->fd, buf, len);
6f97dba0
AL		 1284}
1285
e6a87ed8
AL		 1286static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1287{
1288 PtyCharDriver *s = chr->opaque;
62c339c5
PB		 1289 if (!s->connected) {
1290 return NULL;
1291 }
e6a87ed8
AL		 1292 return g_io_create_watch(s->fd, cond);
1293}
1294
6f97dba0
AL		 1295static int pty_chr_read_poll(void *opaque)
1296{
1297 CharDriverState *chr = opaque;
1298 PtyCharDriver *s = chr->opaque;
1299
909cda12 1300 s->read_bytes = qemu_chr_be_can_write(chr);
6f97dba0
AL		 1301 return s->read_bytes;
1302}
1303
093d3a20 1304static gboolean pty_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 1305{
1306 CharDriverState *chr = opaque;
1307 PtyCharDriver *s = chr->opaque;
093d3a20 1308 gsize size, len;
9bd7854e 1309 uint8_t buf[READ_BUF_LEN];
093d3a20 1310 GIOStatus status;
6f97dba0
AL		 1311
1312 len = sizeof(buf);
1313 if (len > s->read_bytes)
1314 len = s->read_bytes;
cdbf6e16
PB		 1315 if (len == 0) {
1316 return TRUE;
1317 }
093d3a20
AL		 1318 status = g_io_channel_read_chars(s->fd, (gchar *)buf, len, &size, NULL);
1319 if (status != G_IO_STATUS_NORMAL) {
6f97dba0 1320 pty_chr_state(chr, 0);
093d3a20
AL		 1321 return FALSE;
1322 } else {
6f97dba0 1323 pty_chr_state(chr, 1);
fa5efccb 1324 qemu_chr_be_write(chr, buf, size);
6f97dba0 1325 }
093d3a20 1326 return TRUE;
6f97dba0
AL		 1327}
1328
7b3621f4
PB		 1329static gboolean qemu_chr_be_generic_open_func(gpointer opaque)
1330{
1331 CharDriverState *chr = opaque;
1332 PtyCharDriver *s = chr->opaque;
1333
1334 s->open_tag = 0;
1335 qemu_chr_be_generic_open(chr);
1336 return FALSE;
1337}
1338
9005b2a7 1339/* Called with chr_write_lock held. */
6f97dba0
AL		 1340static void pty_chr_state(CharDriverState *chr, int connected)
1341{
1342 PtyCharDriver *s = chr->opaque;
1343
1344 if (!connected) {
7b3621f4
PB		 1345 if (s->open_tag) {
1346 g_source_remove(s->open_tag);
1347 s->open_tag = 0;
1348 }
26da70c7 1349 remove_fd_in_watch(chr);
6f97dba0 1350 s->connected = 0;
6f97dba0
AL		 1351 /* (re-)connect poll interval for idle guests: once per second.
1352 * We check more frequently in case the guests sends data to
1353 * the virtual device linked to our pty. */
8aa33caf 1354 pty_chr_rearm_timer(chr, 1000);
6f97dba0 1355 } else {
85a67692
PB		 1356 if (s->timer_tag) {
1357 g_source_remove(s->timer_tag);
1358 s->timer_tag = 0;
1359 }
1360 if (!s->connected) {
7b3621f4 1361 g_assert(s->open_tag == 0);
85a67692 1362 s->connected = 1;
7b3621f4 1363 s->open_tag = g_idle_add(qemu_chr_be_generic_open_func, chr);
ac1b84dd
GH		 1364 }
1365 if (!chr->fd_in_tag) {
7ba9addc
AS		 1366 chr->fd_in_tag = io_add_watch_poll(s->fd, pty_chr_read_poll,
1367 pty_chr_read, chr);
85a67692 1368 }
6f97dba0
AL		 1369 }
1370}
1371
6f97dba0
AL		 1372static void pty_chr_close(struct CharDriverState *chr)
1373{
1374 PtyCharDriver *s = chr->opaque;
093d3a20 1375 int fd;
6f97dba0 1376
7b3621f4
PB		 1377 qemu_mutex_lock(&chr->chr_write_lock);
1378 pty_chr_state(chr, 0);
093d3a20
AL		 1379 fd = g_io_channel_unix_get_fd(s->fd);
1380 g_io_channel_unref(s->fd);
1381 close(fd);
8aa33caf
AL		 1382 if (s->timer_tag) {
1383 g_source_remove(s->timer_tag);
910b6368 1384 s->timer_tag = 0;
8aa33caf 1385 }
7b3621f4 1386 qemu_mutex_unlock(&chr->chr_write_lock);
7267c094 1387 g_free(s);
a425d23f 1388 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1389}
1390
e68c5958
GH		 1391static CharDriverState *qemu_chr_open_pty(const char *id,
1392 ChardevReturn *ret)
6f97dba0
AL		 1393{
1394 CharDriverState *chr;
1395 PtyCharDriver *s;
e68c5958 1396 int master_fd, slave_fd;
6f97dba0 1397 char pty_name[PATH_MAX];
6f97dba0 1398
4efeabbb
MT		 1399 master_fd = qemu_openpty_raw(&slave_fd, pty_name);
1400 if (master_fd < 0) {
1f51470d 1401 return NULL;
6f97dba0
AL		 1402 }
1403
6f97dba0 1404 close(slave_fd);
fac6688a 1405 qemu_set_nonblock(master_fd);
6f97dba0 1406
db39fcf1 1407 chr = qemu_chr_alloc();
a4e26048 1408
4efeabbb
MT		 1409 chr->filename = g_strdup_printf("pty:%s", pty_name);
1410 ret->pty = g_strdup(pty_name);
e68c5958 1411 ret->has_pty = true;
58650218 1412
e68c5958 1413 fprintf(stderr, "char device redirected to %s (label %s)\n",
4efeabbb 1414 pty_name, id);
6f97dba0 1415
a4e26048 1416 s = g_malloc0(sizeof(PtyCharDriver));
6f97dba0
AL		 1417 chr->opaque = s;
1418 chr->chr_write = pty_chr_write;
1419 chr->chr_update_read_handler = pty_chr_update_read_handler;
1420 chr->chr_close = pty_chr_close;
e6a87ed8 1421 chr->chr_add_watch = pty_chr_add_watch;
bd5c51ee 1422 chr->explicit_be_open = true;
6f97dba0 1423
093d3a20 1424 s->fd = io_channel_from_fd(master_fd);
8aa33caf 1425 s->timer_tag = 0;
6f97dba0 1426
1f51470d 1427 return chr;
6f97dba0
AL		 1428}
1429
1430static void tty_serial_init(int fd, int speed,
1431 int parity, int data_bits, int stop_bits)
1432{
1433 struct termios tty;
1434 speed_t spd;
1435
1436#if 0
1437 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1438 speed, parity, data_bits, stop_bits);
1439#endif
1440 tcgetattr (fd, &tty);
1441
45eea13b
SW		 1442#define check_speed(val) if (speed <= val) { spd = B##val; break; }
1443 speed = speed * 10 / 11;
1444 do {
1445 check_speed(50);
1446 check_speed(75);
1447 check_speed(110);
1448 check_speed(134);
1449 check_speed(150);
1450 check_speed(200);
1451 check_speed(300);
1452 check_speed(600);
1453 check_speed(1200);
1454 check_speed(1800);
1455 check_speed(2400);
1456 check_speed(4800);
1457 check_speed(9600);
1458 check_speed(19200);
1459 check_speed(38400);
1460 /* Non-Posix values follow. They may be unsupported on some systems. */
1461 check_speed(57600);
1462 check_speed(115200);
1463#ifdef B230400
1464 check_speed(230400);
1465#endif
1466#ifdef B460800
1467 check_speed(460800);
1468#endif
1469#ifdef B500000
1470 check_speed(500000);
1471#endif
1472#ifdef B576000
1473 check_speed(576000);
1474#endif
1475#ifdef B921600
1476 check_speed(921600);
1477#endif
1478#ifdef B1000000
1479 check_speed(1000000);
1480#endif
1481#ifdef B1152000
1482 check_speed(1152000);
1483#endif
1484#ifdef B1500000
1485 check_speed(1500000);
1486#endif
1487#ifdef B2000000
1488 check_speed(2000000);
1489#endif
1490#ifdef B2500000
1491 check_speed(2500000);
1492#endif
1493#ifdef B3000000
1494 check_speed(3000000);
1495#endif
1496#ifdef B3500000
1497 check_speed(3500000);
1498#endif
1499#ifdef B4000000
1500 check_speed(4000000);
1501#endif
6f97dba0 1502 spd = B115200;
45eea13b 1503 } while (0);
6f97dba0
AL		 1504
1505 cfsetispeed(&tty, spd);
1506 cfsetospeed(&tty, spd);
1507
1508 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1509 |INLCR|IGNCR|ICRNL|IXON);
1510 tty.c_oflag |= OPOST;
1511 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1512 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1513 switch(data_bits) {
1514 default:
1515 case 8:
1516 tty.c_cflag |= CS8;
1517 break;
1518 case 7:
1519 tty.c_cflag |= CS7;
1520 break;
1521 case 6:
1522 tty.c_cflag |= CS6;
1523 break;
1524 case 5:
1525 tty.c_cflag |= CS5;
1526 break;
1527 }
1528 switch(parity) {
1529 default:
1530 case 'N':
1531 break;
1532 case 'E':
1533 tty.c_cflag |= PARENB;
1534 break;
1535 case 'O':
1536 tty.c_cflag |= PARENB | PARODD;
1537 break;
1538 }
1539 if (stop_bits == 2)
1540 tty.c_cflag |= CSTOPB;
1541
1542 tcsetattr (fd, TCSANOW, &tty);
1543}
1544
1545static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1546{
1547 FDCharDriver *s = chr->opaque;
1548
1549 switch(cmd) {
1550 case CHR_IOCTL_SERIAL_SET_PARAMS:
1551 {
1552 QEMUSerialSetParams *ssp = arg;
a29753f8
AL		 1553 tty_serial_init(g_io_channel_unix_get_fd(s->fd_in),
1554 ssp->speed, ssp->parity,
6f97dba0
AL		 1555 ssp->data_bits, ssp->stop_bits);
1556 }
1557 break;
1558 case CHR_IOCTL_SERIAL_SET_BREAK:
1559 {
1560 int enable = *(int *)arg;
a29753f8
AL		 1561 if (enable) {
1562 tcsendbreak(g_io_channel_unix_get_fd(s->fd_in), 1);
1563 }
6f97dba0
AL		 1564 }
1565 break;
1566 case CHR_IOCTL_SERIAL_GET_TIOCM:
1567 {
1568 int sarg = 0;
1569 int *targ = (int *)arg;
a29753f8 1570 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &sarg);
6f97dba0 1571 *targ = 0;
b4abdfa4 1572 if (sarg & TIOCM_CTS)
6f97dba0 1573 *targ |= CHR_TIOCM_CTS;
b4abdfa4 1574 if (sarg & TIOCM_CAR)
6f97dba0 1575 *targ |= CHR_TIOCM_CAR;
b4abdfa4 1576 if (sarg & TIOCM_DSR)
6f97dba0 1577 *targ |= CHR_TIOCM_DSR;
b4abdfa4 1578 if (sarg & TIOCM_RI)
6f97dba0 1579 *targ |= CHR_TIOCM_RI;
b4abdfa4 1580 if (sarg & TIOCM_DTR)
6f97dba0 1581 *targ |= CHR_TIOCM_DTR;
b4abdfa4 1582 if (sarg & TIOCM_RTS)
6f97dba0
AL		 1583 *targ |= CHR_TIOCM_RTS;
1584 }
1585 break;
1586 case CHR_IOCTL_SERIAL_SET_TIOCM:
1587 {
1588 int sarg = *(int *)arg;
1589 int targ = 0;
a29753f8 1590 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &targ);
b4abdfa4
AJ		 1591 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1592 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1593 if (sarg & CHR_TIOCM_CTS)
1594 targ |= TIOCM_CTS;
1595 if (sarg & CHR_TIOCM_CAR)
1596 targ |= TIOCM_CAR;
1597 if (sarg & CHR_TIOCM_DSR)
1598 targ |= TIOCM_DSR;
1599 if (sarg & CHR_TIOCM_RI)
1600 targ |= TIOCM_RI;
1601 if (sarg & CHR_TIOCM_DTR)
6f97dba0 1602 targ |= TIOCM_DTR;
b4abdfa4 1603 if (sarg & CHR_TIOCM_RTS)
6f97dba0 1604 targ |= TIOCM_RTS;
a29753f8 1605 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMSET, &targ);
6f97dba0
AL		 1606 }
1607 break;
1608 default:
1609 return -ENOTSUP;
1610 }
1611 return 0;
1612}
1613
4266a134
DA		 1614static void qemu_chr_close_tty(CharDriverState *chr)
1615{
1616 FDCharDriver *s = chr->opaque;
1617 int fd = -1;
1618
1619 if (s) {
a29753f8 1620 fd = g_io_channel_unix_get_fd(s->fd_in);
4266a134
DA		 1621 }
1622
1623 fd_chr_close(chr);
1624
1625 if (fd >= 0) {
1626 close(fd);
1627 }
1628}
1629
d59044ef
GH		 1630static CharDriverState *qemu_chr_open_tty_fd(int fd)
1631{
1632 CharDriverState *chr;
1633
1634 tty_serial_init(fd, 115200, 'N', 8, 1);
1635 chr = qemu_chr_open_fd(fd, fd);
1636 chr->chr_ioctl = tty_serial_ioctl;
1637 chr->chr_close = qemu_chr_close_tty;
1638 return chr;
1639}
6f97dba0
AL		 1640#endif /* __linux__ || __sun__ */
1641
1642#if defined(__linux__)
e551498e
GH		 1643
1644#define HAVE_CHARDEV_PARPORT 1
1645
6f97dba0
AL		 1646typedef struct {
1647 int fd;
1648 int mode;
1649} ParallelCharDriver;
1650
1651static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1652{
1653 if (s->mode != mode) {
1654 int m = mode;
1655 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1656 return 0;
1657 s->mode = mode;
1658 }
1659 return 1;
1660}
1661
1662static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1663{
1664 ParallelCharDriver *drv = chr->opaque;
1665 int fd = drv->fd;
1666 uint8_t b;
1667
1668 switch(cmd) {
1669 case CHR_IOCTL_PP_READ_DATA:
1670 if (ioctl(fd, PPRDATA, &b) < 0)
1671 return -ENOTSUP;
1672 *(uint8_t *)arg = b;
1673 break;
1674 case CHR_IOCTL_PP_WRITE_DATA:
1675 b = *(uint8_t *)arg;
1676 if (ioctl(fd, PPWDATA, &b) < 0)
1677 return -ENOTSUP;
1678 break;
1679 case CHR_IOCTL_PP_READ_CONTROL:
1680 if (ioctl(fd, PPRCONTROL, &b) < 0)
1681 return -ENOTSUP;
1682 /* Linux gives only the lowest bits, and no way to know data
1683 direction! For better compatibility set the fixed upper
1684 bits. */
1685 *(uint8_t *)arg = b | 0xc0;
1686 break;
1687 case CHR_IOCTL_PP_WRITE_CONTROL:
1688 b = *(uint8_t *)arg;
1689 if (ioctl(fd, PPWCONTROL, &b) < 0)
1690 return -ENOTSUP;
1691 break;
1692 case CHR_IOCTL_PP_READ_STATUS:
1693 if (ioctl(fd, PPRSTATUS, &b) < 0)
1694 return -ENOTSUP;
1695 *(uint8_t *)arg = b;
1696 break;
1697 case CHR_IOCTL_PP_DATA_DIR:
1698 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1699 return -ENOTSUP;
1700 break;
1701 case CHR_IOCTL_PP_EPP_READ_ADDR:
1702 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1703 struct ParallelIOArg *parg = arg;
1704 int n = read(fd, parg->buffer, parg->count);
1705 if (n != parg->count) {
1706 return -EIO;
1707 }
1708 }
1709 break;
1710 case CHR_IOCTL_PP_EPP_READ:
1711 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1712 struct ParallelIOArg *parg = arg;
1713 int n = read(fd, parg->buffer, parg->count);
1714 if (n != parg->count) {
1715 return -EIO;
1716 }
1717 }
1718 break;
1719 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1720 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1721 struct ParallelIOArg *parg = arg;
1722 int n = write(fd, parg->buffer, parg->count);
1723 if (n != parg->count) {
1724 return -EIO;
1725 }
1726 }
1727 break;
1728 case CHR_IOCTL_PP_EPP_WRITE:
1729 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1730 struct ParallelIOArg *parg = arg;
1731 int n = write(fd, parg->buffer, parg->count);
1732 if (n != parg->count) {
1733 return -EIO;
1734 }
1735 }
1736 break;
1737 default:
1738 return -ENOTSUP;
1739 }
1740 return 0;
1741}
1742
1743static void pp_close(CharDriverState *chr)
1744{
1745 ParallelCharDriver *drv = chr->opaque;
1746 int fd = drv->fd;
1747
1748 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1749 ioctl(fd, PPRELEASE);
1750 close(fd);
7267c094 1751 g_free(drv);
a425d23f 1752 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1753}
1754
88a946d3 1755static CharDriverState *qemu_chr_open_pp_fd(int fd)
6f97dba0
AL		 1756{
1757 CharDriverState *chr;
1758 ParallelCharDriver *drv;
6f97dba0
AL		 1759
1760 if (ioctl(fd, PPCLAIM) < 0) {
1761 close(fd);
1f51470d 1762 return NULL;
6f97dba0
AL		 1763 }
1764
7267c094 1765 drv = g_malloc0(sizeof(ParallelCharDriver));
6f97dba0
AL		 1766 drv->fd = fd;
1767 drv->mode = IEEE1284_MODE_COMPAT;
1768
db39fcf1 1769 chr = qemu_chr_alloc();
6f97dba0
AL		 1770 chr->chr_write = null_chr_write;
1771 chr->chr_ioctl = pp_ioctl;
1772 chr->chr_close = pp_close;
1773 chr->opaque = drv;
1774
1f51470d 1775 return chr;
6f97dba0
AL		 1776}
1777#endif /* __linux__ */
1778
a167ba50 1779#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
e551498e
GH		 1780
1781#define HAVE_CHARDEV_PARPORT 1
1782
6972f935
BS		 1783static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1784{
e0efb993 1785 int fd = (int)(intptr_t)chr->opaque;
6972f935
BS		 1786 uint8_t b;
1787
1788 switch(cmd) {
1789 case CHR_IOCTL_PP_READ_DATA:
1790 if (ioctl(fd, PPIGDATA, &b) < 0)
1791 return -ENOTSUP;
1792 *(uint8_t *)arg = b;
1793 break;
1794 case CHR_IOCTL_PP_WRITE_DATA:
1795 b = *(uint8_t *)arg;
1796 if (ioctl(fd, PPISDATA, &b) < 0)
1797 return -ENOTSUP;
1798 break;
1799 case CHR_IOCTL_PP_READ_CONTROL:
1800 if (ioctl(fd, PPIGCTRL, &b) < 0)
1801 return -ENOTSUP;
1802 *(uint8_t *)arg = b;
1803 break;
1804 case CHR_IOCTL_PP_WRITE_CONTROL:
1805 b = *(uint8_t *)arg;
1806 if (ioctl(fd, PPISCTRL, &b) < 0)
1807 return -ENOTSUP;
1808 break;
1809 case CHR_IOCTL_PP_READ_STATUS:
1810 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1811 return -ENOTSUP;
1812 *(uint8_t *)arg = b;
1813 break;
1814 default:
1815 return -ENOTSUP;
1816 }
1817 return 0;
1818}
1819
88a946d3 1820static CharDriverState *qemu_chr_open_pp_fd(int fd)
6972f935
BS		 1821{
1822 CharDriverState *chr;
6972f935 1823
db39fcf1 1824 chr = qemu_chr_alloc();
e0efb993 1825 chr->opaque = (void *)(intptr_t)fd;
6972f935
BS		 1826 chr->chr_write = null_chr_write;
1827 chr->chr_ioctl = pp_ioctl;
bd5c51ee 1828 chr->explicit_be_open = true;
1f51470d 1829 return chr;
6972f935
BS		 1830}
1831#endif
1832
6f97dba0
AL		 1833#else /* _WIN32 */
1834
1835typedef struct {
1836 int max_size;
1837 HANDLE hcom, hrecv, hsend;
9005b2a7 1838 OVERLAPPED orecv;
6f97dba0
AL		 1839 BOOL fpipe;
1840 DWORD len;
9005b2a7
PB		 1841
1842 /* Protected by the CharDriverState chr_write_lock. */
1843 OVERLAPPED osend;
6f97dba0
AL		 1844} WinCharState;
1845
db418a0a
FC		 1846typedef struct {
1847 HANDLE hStdIn;
1848 HANDLE hInputReadyEvent;
1849 HANDLE hInputDoneEvent;
1850 HANDLE hInputThread;
1851 uint8_t win_stdio_buf;
1852} WinStdioCharState;
1853
6f97dba0
AL		 1854#define NSENDBUF 2048
1855#define NRECVBUF 2048
1856#define MAXCONNECT 1
1857#define NTIMEOUT 5000
1858
1859static int win_chr_poll(void *opaque);
1860static int win_chr_pipe_poll(void *opaque);
1861
1862static void win_chr_close(CharDriverState *chr)
1863{
1864 WinCharState *s = chr->opaque;
1865
1866 if (s->hsend) {
1867 CloseHandle(s->hsend);
1868 s->hsend = NULL;
1869 }
1870 if (s->hrecv) {
1871 CloseHandle(s->hrecv);
1872 s->hrecv = NULL;
1873 }
1874 if (s->hcom) {
1875 CloseHandle(s->hcom);
1876 s->hcom = NULL;
1877 }
1878 if (s->fpipe)
1879 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1880 else
1881 qemu_del_polling_cb(win_chr_poll, chr);
793cbfb5 1882
a425d23f 1883 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1884}
1885
1886static int win_chr_init(CharDriverState *chr, const char *filename)
1887{
1888 WinCharState *s = chr->opaque;
1889 COMMCONFIG comcfg;
1890 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1891 COMSTAT comstat;
1892 DWORD size;
1893 DWORD err;
1894
1895 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1896 if (!s->hsend) {
1897 fprintf(stderr, "Failed CreateEvent\n");
1898 goto fail;
1899 }
1900 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1901 if (!s->hrecv) {
1902 fprintf(stderr, "Failed CreateEvent\n");
1903 goto fail;
1904 }
1905
1906 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1907 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1908 if (s->hcom == INVALID_HANDLE_VALUE) {
1909 fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
1910 s->hcom = NULL;
1911 goto fail;
1912 }
1913
1914 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
1915 fprintf(stderr, "Failed SetupComm\n");
1916 goto fail;
1917 }
1918
1919 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1920 size = sizeof(COMMCONFIG);
1921 GetDefaultCommConfig(filename, &comcfg, &size);
1922 comcfg.dcb.DCBlength = sizeof(DCB);
1923 CommConfigDialog(filename, NULL, &comcfg);
1924
1925 if (!SetCommState(s->hcom, &comcfg.dcb)) {
1926 fprintf(stderr, "Failed SetCommState\n");
1927 goto fail;
1928 }
1929
1930 if (!SetCommMask(s->hcom, EV_ERR)) {
1931 fprintf(stderr, "Failed SetCommMask\n");
1932 goto fail;
1933 }
1934
1935 cto.ReadIntervalTimeout = MAXDWORD;
1936 if (!SetCommTimeouts(s->hcom, &cto)) {
1937 fprintf(stderr, "Failed SetCommTimeouts\n");
1938 goto fail;
1939 }
1940
1941 if (!ClearCommError(s->hcom, &err, &comstat)) {
1942 fprintf(stderr, "Failed ClearCommError\n");
1943 goto fail;
1944 }
1945 qemu_add_polling_cb(win_chr_poll, chr);
1946 return 0;
1947
1948 fail:
1949 win_chr_close(chr);
1950 return -1;
1951}
1952
9005b2a7 1953/* Called with chr_write_lock held. */
6f97dba0
AL		 1954static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1955{
1956 WinCharState *s = chr->opaque;
1957 DWORD len, ret, size, err;
1958
1959 len = len1;
1960 ZeroMemory(&s->osend, sizeof(s->osend));
1961 s->osend.hEvent = s->hsend;
1962 while (len > 0) {
1963 if (s->hsend)
1964 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1965 else
1966 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1967 if (!ret) {
1968 err = GetLastError();
1969 if (err == ERROR_IO_PENDING) {
1970 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1971 if (ret) {
1972 buf += size;
1973 len -= size;
1974 } else {
1975 break;
1976 }
1977 } else {
1978 break;
1979 }
1980 } else {
1981 buf += size;
1982 len -= size;
1983 }
1984 }
1985 return len1 - len;
1986}
1987
1988static int win_chr_read_poll(CharDriverState *chr)
1989{
1990 WinCharState *s = chr->opaque;
1991
909cda12 1992 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 1993 return s->max_size;
1994}
1995
1996static void win_chr_readfile(CharDriverState *chr)
1997{
1998 WinCharState *s = chr->opaque;
1999 int ret, err;
9bd7854e 2000 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2001 DWORD size;
2002
2003 ZeroMemory(&s->orecv, sizeof(s->orecv));
2004 s->orecv.hEvent = s->hrecv;
2005 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
2006 if (!ret) {
2007 err = GetLastError();
2008 if (err == ERROR_IO_PENDING) {
2009 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
2010 }
2011 }
2012
2013 if (size > 0) {
fa5efccb 2014 qemu_chr_be_write(chr, buf, size);
6f97dba0
AL		 2015 }
2016}
2017
2018static void win_chr_read(CharDriverState *chr)
2019{
2020 WinCharState *s = chr->opaque;
2021
2022 if (s->len > s->max_size)
2023 s->len = s->max_size;
2024 if (s->len == 0)
2025 return;
2026
2027 win_chr_readfile(chr);
2028}
2029
2030static int win_chr_poll(void *opaque)
2031{
2032 CharDriverState *chr = opaque;
2033 WinCharState *s = chr->opaque;
2034 COMSTAT status;
2035 DWORD comerr;
2036
2037 ClearCommError(s->hcom, &comerr, &status);
2038 if (status.cbInQue > 0) {
2039 s->len = status.cbInQue;
2040 win_chr_read_poll(chr);
2041 win_chr_read(chr);
2042 return 1;
2043 }
2044 return 0;
2045}
2046
d59044ef 2047static CharDriverState *qemu_chr_open_win_path(const char *filename)
6f97dba0
AL		 2048{
2049 CharDriverState *chr;
2050 WinCharState *s;
2051
db39fcf1 2052 chr = qemu_chr_alloc();
7267c094 2053 s = g_malloc0(sizeof(WinCharState));
6f97dba0
AL		 2054 chr->opaque = s;
2055 chr->chr_write = win_chr_write;
2056 chr->chr_close = win_chr_close;
2057
2058 if (win_chr_init(chr, filename) < 0) {
2e02e18b
SW		 2059 g_free(s);
2060 g_free(chr);
1f51470d 2061 return NULL;
6f97dba0 2062 }
1f51470d 2063 return chr;
6f97dba0
AL		 2064}
2065
2066static int win_chr_pipe_poll(void *opaque)
2067{
2068 CharDriverState *chr = opaque;
2069 WinCharState *s = chr->opaque;
2070 DWORD size;
2071
2072 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
2073 if (size > 0) {
2074 s->len = size;
2075 win_chr_read_poll(chr);
2076 win_chr_read(chr);
2077 return 1;
2078 }
2079 return 0;
2080}
2081
2082static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
2083{
2084 WinCharState *s = chr->opaque;
2085 OVERLAPPED ov;
2086 int ret;
2087 DWORD size;
9f781168 2088 char openname[CHR_MAX_FILENAME_SIZE];
6f97dba0
AL		 2089
2090 s->fpipe = TRUE;
2091
2092 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
2093 if (!s->hsend) {
2094 fprintf(stderr, "Failed CreateEvent\n");
2095 goto fail;
2096 }
2097 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
2098 if (!s->hrecv) {
2099 fprintf(stderr, "Failed CreateEvent\n");
2100 goto fail;
2101 }
2102
2103 snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
2104 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
2105 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
2106 PIPE_WAIT,
2107 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
2108 if (s->hcom == INVALID_HANDLE_VALUE) {
2109 fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
2110 s->hcom = NULL;
2111 goto fail;
2112 }
2113
2114 ZeroMemory(&ov, sizeof(ov));
2115 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
2116 ret = ConnectNamedPipe(s->hcom, &ov);
2117 if (ret) {
2118 fprintf(stderr, "Failed ConnectNamedPipe\n");
2119 goto fail;
2120 }
2121
2122 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
2123 if (!ret) {
2124 fprintf(stderr, "Failed GetOverlappedResult\n");
2125 if (ov.hEvent) {
2126 CloseHandle(ov.hEvent);
2127 ov.hEvent = NULL;
2128 }
2129 goto fail;
2130 }
2131
2132 if (ov.hEvent) {
2133 CloseHandle(ov.hEvent);
2134 ov.hEvent = NULL;
2135 }
2136 qemu_add_polling_cb(win_chr_pipe_poll, chr);
2137 return 0;
2138
2139 fail:
2140 win_chr_close(chr);
2141 return -1;
2142}
2143
2144
548cbb36 2145static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
6f97dba0 2146{
548cbb36 2147 const char *filename = opts->device;
6f97dba0
AL		 2148 CharDriverState *chr;
2149 WinCharState *s;
2150
db39fcf1 2151 chr = qemu_chr_alloc();
7267c094 2152 s = g_malloc0(sizeof(WinCharState));
6f97dba0
AL		 2153 chr->opaque = s;
2154 chr->chr_write = win_chr_write;
2155 chr->chr_close = win_chr_close;
2156
2157 if (win_chr_pipe_init(chr, filename) < 0) {
2e02e18b
SW		 2158 g_free(s);
2159 g_free(chr);
1f51470d 2160 return NULL;
6f97dba0 2161 }
1f51470d 2162 return chr;
6f97dba0
AL		 2163}
2164
1f51470d 2165static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
6f97dba0
AL		 2166{
2167 CharDriverState *chr;
2168 WinCharState *s;
2169
db39fcf1 2170 chr = qemu_chr_alloc();
7267c094 2171 s = g_malloc0(sizeof(WinCharState));
6f97dba0
AL		 2172 s->hcom = fd_out;
2173 chr->opaque = s;
2174 chr->chr_write = win_chr_write;
1f51470d 2175 return chr;
6f97dba0
AL		 2176}
2177
d9ac374f 2178static CharDriverState *qemu_chr_open_win_con(void)
6f97dba0 2179{
1f51470d 2180 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
6f97dba0
AL		 2181}
2182
db418a0a
FC		 2183static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
2184{
2185 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
2186 DWORD dwSize;
2187 int len1;
2188
2189 len1 = len;
2190
2191 while (len1 > 0) {
2192 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
2193 break;
2194 }
2195 buf += dwSize;
2196 len1 -= dwSize;
2197 }
2198
2199 return len - len1;
2200}
2201
2202static void win_stdio_wait_func(void *opaque)
2203{
2204 CharDriverState *chr = opaque;
2205 WinStdioCharState *stdio = chr->opaque;
2206 INPUT_RECORD buf[4];
2207 int ret;
2208 DWORD dwSize;
2209 int i;
2210
dff7424d 2211 ret = ReadConsoleInput(stdio->hStdIn, buf, ARRAY_SIZE(buf), &dwSize);
db418a0a
FC		 2212
2213 if (!ret) {
2214 /* Avoid error storm */
2215 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2216 return;
2217 }
2218
2219 for (i = 0; i < dwSize; i++) {
2220 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
2221
2222 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
2223 int j;
2224 if (kev->uChar.AsciiChar != 0) {
2225 for (j = 0; j < kev->wRepeatCount; j++) {
2226 if (qemu_chr_be_can_write(chr)) {
2227 uint8_t c = kev->uChar.AsciiChar;
2228 qemu_chr_be_write(chr, &c, 1);
2229 }
2230 }
2231 }
2232 }
2233 }
2234}
2235
2236static DWORD WINAPI win_stdio_thread(LPVOID param)
2237{
2238 CharDriverState *chr = param;
2239 WinStdioCharState *stdio = chr->opaque;
2240 int ret;
2241 DWORD dwSize;
2242
2243 while (1) {
2244
2245 /* Wait for one byte */
2246 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
2247
2248 /* Exit in case of error, continue if nothing read */
2249 if (!ret) {
2250 break;
2251 }
2252 if (!dwSize) {
2253 continue;
2254 }
2255
2256 /* Some terminal emulator returns \r\n for Enter, just pass \n */
2257 if (stdio->win_stdio_buf == '\r') {
2258 continue;
2259 }
2260
2261 /* Signal the main thread and wait until the byte was eaten */
2262 if (!SetEvent(stdio->hInputReadyEvent)) {
2263 break;
2264 }
2265 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
2266 != WAIT_OBJECT_0) {
2267 break;
2268 }
2269 }
2270
2271 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2272 return 0;
2273}
2274
2275static void win_stdio_thread_wait_func(void *opaque)
2276{
2277 CharDriverState *chr = opaque;
2278 WinStdioCharState *stdio = chr->opaque;
2279
2280 if (qemu_chr_be_can_write(chr)) {
2281 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
2282 }
2283
2284 SetEvent(stdio->hInputDoneEvent);
2285}
2286
2287static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
2288{
2289 WinStdioCharState *stdio = chr->opaque;
2290 DWORD dwMode = 0;
2291
2292 GetConsoleMode(stdio->hStdIn, &dwMode);
2293
2294 if (echo) {
2295 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
2296 } else {
2297 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
2298 }
2299}
2300
2301static void win_stdio_close(CharDriverState *chr)
2302{
2303 WinStdioCharState *stdio = chr->opaque;
2304
2305 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
2306 CloseHandle(stdio->hInputReadyEvent);
2307 }
2308 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
2309 CloseHandle(stdio->hInputDoneEvent);
2310 }
2311 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
2312 TerminateThread(stdio->hInputThread, 0);
2313 }
2314
2315 g_free(chr->opaque);
2316 g_free(chr);
db418a0a
FC		 2317}
2318
7c358031 2319static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
db418a0a
FC		 2320{
2321 CharDriverState *chr;
2322 WinStdioCharState *stdio;
2323 DWORD dwMode;
2324 int is_console = 0;
2325
db39fcf1 2326 chr = qemu_chr_alloc();
db418a0a
FC		 2327 stdio = g_malloc0(sizeof(WinStdioCharState));
2328
2329 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
2330 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
2331 fprintf(stderr, "cannot open stdio: invalid handle\n");
2332 exit(1);
2333 }
2334
2335 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
2336
2337 chr->opaque = stdio;
2338 chr->chr_write = win_stdio_write;
2339 chr->chr_close = win_stdio_close;
2340
ed7a1540
AL		 2341 if (is_console) {
2342 if (qemu_add_wait_object(stdio->hStdIn,
2343 win_stdio_wait_func, chr)) {
2344 fprintf(stderr, "qemu_add_wait_object: failed\n");
2345 }
2346 } else {
2347 DWORD dwId;
2348
2349 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2350 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2351 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
2352 chr, 0, &dwId);
2353
2354 if (stdio->hInputThread == INVALID_HANDLE_VALUE
2355 || stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
2356 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
2357 fprintf(stderr, "cannot create stdio thread or event\n");
2358 exit(1);
2359 }
2360 if (qemu_add_wait_object(stdio->hInputReadyEvent,
2361 win_stdio_thread_wait_func, chr)) {
2362 fprintf(stderr, "qemu_add_wait_object: failed\n");
db418a0a
FC		 2363 }
2364 }
2365
2366 dwMode |= ENABLE_LINE_INPUT;
2367
ed7a1540 2368 if (is_console) {
db418a0a
FC		 2369 /* set the terminal in raw mode */
2370 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2371 dwMode |= ENABLE_PROCESSED_INPUT;
2372 }
2373
2374 SetConsoleMode(stdio->hStdIn, dwMode);
2375
2376 chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
2377 qemu_chr_fe_set_echo(chr, false);
2378
1f51470d 2379 return chr;
db418a0a 2380}
6f97dba0
AL		 2381#endif /* !_WIN32 */
2382
5ab8211b 2383
6f97dba0
AL		 2384/***********************************************************/
2385/* UDP Net console */
2386
2387typedef struct {
2388 int fd;
76a9644b 2389 GIOChannel *chan;
9bd7854e 2390 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2391 int bufcnt;
2392 int bufptr;
2393 int max_size;
2394} NetCharDriver;
2395
9005b2a7 2396/* Called with chr_write_lock held. */
6f97dba0
AL		 2397static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2398{
2399 NetCharDriver *s = chr->opaque;
76a9644b
AL		 2400 gsize bytes_written;
2401 GIOStatus status;
2402
2403 status = g_io_channel_write_chars(s->chan, (const gchar *)buf, len, &bytes_written, NULL);
2404 if (status == G_IO_STATUS_EOF) {
2405 return 0;
2406 } else if (status != G_IO_STATUS_NORMAL) {
2407 return -1;
2408 }
6f97dba0 2409
76a9644b 2410 return bytes_written;
6f97dba0
AL		 2411}
2412
2413static int udp_chr_read_poll(void *opaque)
2414{
2415 CharDriverState *chr = opaque;
2416 NetCharDriver *s = chr->opaque;
2417
909cda12 2418 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2419
2420 /* If there were any stray characters in the queue process them
2421 * first
2422 */
2423 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
fa5efccb 2424 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
6f97dba0 2425 s->bufptr++;
909cda12 2426 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2427 }
2428 return s->max_size;
2429}
2430
76a9644b 2431static gboolean udp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 2432{
2433 CharDriverState *chr = opaque;
2434 NetCharDriver *s = chr->opaque;
76a9644b
AL		 2435 gsize bytes_read = 0;
2436 GIOStatus status;
6f97dba0 2437
cdbf6e16
PB		 2438 if (s->max_size == 0) {
2439 return TRUE;
2440 }
76a9644b
AL		 2441 status = g_io_channel_read_chars(s->chan, (gchar *)s->buf, sizeof(s->buf),
2442 &bytes_read, NULL);
2443 s->bufcnt = bytes_read;
6f97dba0 2444 s->bufptr = s->bufcnt;
76a9644b 2445 if (status != G_IO_STATUS_NORMAL) {
26da70c7 2446 remove_fd_in_watch(chr);
76a9644b
AL		 2447 return FALSE;
2448 }
6f97dba0
AL		 2449
2450 s->bufptr = 0;
2451 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
fa5efccb 2452 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
6f97dba0 2453 s->bufptr++;
909cda12 2454 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0 2455 }
76a9644b
AL		 2456
2457 return TRUE;
6f97dba0
AL		 2458}
2459
2460static void udp_chr_update_read_handler(CharDriverState *chr)
2461{
2462 NetCharDriver *s = chr->opaque;
2463
26da70c7 2464 remove_fd_in_watch(chr);
76a9644b 2465 if (s->chan) {
7ba9addc
AS		 2466 chr->fd_in_tag = io_add_watch_poll(s->chan, udp_chr_read_poll,
2467 udp_chr_read, chr);
6f97dba0
AL		 2468 }
2469}
2470
819f56b7
AL		 2471static void udp_chr_close(CharDriverState *chr)
2472{
2473 NetCharDriver *s = chr->opaque;
26da70c7
AS		 2474
2475 remove_fd_in_watch(chr);
76a9644b
AL		 2476 if (s->chan) {
2477 g_io_channel_unref(s->chan);
819f56b7
AL		 2478 closesocket(s->fd);
2479 }
7267c094 2480 g_free(s);
a425d23f 2481 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
819f56b7
AL		 2482}
2483
3ecc059d 2484static CharDriverState *qemu_chr_open_udp_fd(int fd)
6f97dba0
AL		 2485{
2486 CharDriverState *chr = NULL;
2487 NetCharDriver *s = NULL;
6f97dba0 2488
db39fcf1 2489 chr = qemu_chr_alloc();
7267c094 2490 s = g_malloc0(sizeof(NetCharDriver));
6f97dba0 2491
6f97dba0 2492 s->fd = fd;
76a9644b 2493 s->chan = io_channel_from_socket(s->fd);
6f97dba0
AL		 2494 s->bufcnt = 0;
2495 s->bufptr = 0;
2496 chr->opaque = s;
2497 chr->chr_write = udp_chr_write;
2498 chr->chr_update_read_handler = udp_chr_update_read_handler;
819f56b7 2499 chr->chr_close = udp_chr_close;
bd5c51ee
MR		 2500 /* be isn't opened until we get a connection */
2501 chr->explicit_be_open = true;
1f51470d 2502 return chr;
3ecc059d 2503}
6f97dba0 2504
6f97dba0
AL		 2505/***********************************************************/
2506/* TCP Net console */
2507
2508typedef struct {
2ea5a7af
AL		 2509
2510 GIOChannel *chan, *listen_chan;
7ba9addc 2511 guint listen_tag;
6f97dba0
AL		 2512 int fd, listen_fd;
2513 int connected;
2514 int max_size;
2515 int do_telnetopt;
2516 int do_nodelay;
2517 int is_unix;
c76bf6bb
NN		 2518 int *read_msgfds;
2519 int read_msgfds_num;
d39aac7a
NN		 2520 int *write_msgfds;
2521 int write_msgfds_num;
cfb429cb
CM		 2522
2523 SocketAddress *addr;
2524 bool is_listen;
2525 bool is_telnet;
5dd1f02b
CM		 2526
2527 guint reconnect_timer;
2528 int64_t reconnect_time;
5008e5b7 2529 bool connect_err_reported;
6f97dba0
AL		 2530} TCPCharDriver;
2531
5dd1f02b
CM		 2532static gboolean socket_reconnect_timeout(gpointer opaque);
2533
2534static void qemu_chr_socket_restart_timer(CharDriverState *chr)
2535{
2536 TCPCharDriver *s = chr->opaque;
2537 assert(s->connected == 0);
2538 s->reconnect_timer = g_timeout_add_seconds(s->reconnect_time,
2539 socket_reconnect_timeout, chr);
2540}
2541
5008e5b7
CM		 2542static void check_report_connect_error(CharDriverState *chr,
2543 Error *err)
2544{
2545 TCPCharDriver *s = chr->opaque;
2546
2547 if (!s->connect_err_reported) {
2548 error_report("Unable to connect character device %s: %s",
2549 chr->label, error_get_pretty(err));
2550 s->connect_err_reported = true;
2551 }
2552 qemu_chr_socket_restart_timer(chr);
2553}
2554
2ea5a7af 2555static gboolean tcp_chr_accept(GIOChannel *chan, GIOCondition cond, void *opaque);
6f97dba0 2556
d39aac7a
NN		 2557#ifndef _WIN32
2558static int unix_send_msgfds(CharDriverState *chr, const uint8_t *buf, int len)
2559{
2560 TCPCharDriver *s = chr->opaque;
2561 struct msghdr msgh;
2562 struct iovec iov;
2563 int r;
2564
2565 size_t fd_size = s->write_msgfds_num * sizeof(int);
2566 char control[CMSG_SPACE(fd_size)];
2567 struct cmsghdr *cmsg;
2568
2569 memset(&msgh, 0, sizeof(msgh));
2570 memset(control, 0, sizeof(control));
2571
2572 /* set the payload */
2573 iov.iov_base = (uint8_t *) buf;
2574 iov.iov_len = len;
2575
2576 msgh.msg_iov = &iov;
2577 msgh.msg_iovlen = 1;
2578
2579 msgh.msg_control = control;
2580 msgh.msg_controllen = sizeof(control);
2581
2582 cmsg = CMSG_FIRSTHDR(&msgh);
2583
2584 cmsg->cmsg_len = CMSG_LEN(fd_size);
2585 cmsg->cmsg_level = SOL_SOCKET;
2586 cmsg->cmsg_type = SCM_RIGHTS;
2587 memcpy(CMSG_DATA(cmsg), s->write_msgfds, fd_size);
2588
2589 do {
2590 r = sendmsg(s->fd, &msgh, 0);
2591 } while (r < 0 && errno == EINTR);
2592
2593 /* free the written msgfds, no matter what */
2594 if (s->write_msgfds_num) {
2595 g_free(s->write_msgfds);
2596 s->write_msgfds = 0;
2597 s->write_msgfds_num = 0;
2598 }
2599
2600 return r;
2601}
2602#endif
2603
9005b2a7 2604/* Called with chr_write_lock held. */
6f97dba0
AL		 2605static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2606{
2607 TCPCharDriver *s = chr->opaque;
2608 if (s->connected) {
d39aac7a
NN		 2609#ifndef _WIN32
2610 if (s->is_unix && s->write_msgfds_num) {
2611 return unix_send_msgfds(chr, buf, len);
2612 } else
2613#endif
2614 {
2615 return io_channel_send(s->chan, buf, len);
2616 }
455aa1e0 2617 } else {
6db0fdce 2618 /* XXX: indicate an error ? */
455aa1e0 2619 return len;
6f97dba0
AL		 2620 }
2621}
2622
2623static int tcp_chr_read_poll(void *opaque)
2624{
2625 CharDriverState *chr = opaque;
2626 TCPCharDriver *s = chr->opaque;
2627 if (!s->connected)
2628 return 0;
909cda12 2629 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2630 return s->max_size;
2631}
2632
2633#define IAC 255
2634#define IAC_BREAK 243
2635static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
2636 TCPCharDriver *s,
2637 uint8_t *buf, int *size)
2638{
2639 /* Handle any telnet client's basic IAC options to satisfy char by
2640 * char mode with no echo. All IAC options will be removed from
2641 * the buf and the do_telnetopt variable will be used to track the
2642 * state of the width of the IAC information.
2643 *
2644 * IAC commands come in sets of 3 bytes with the exception of the
2645 * "IAC BREAK" command and the double IAC.
2646 */
2647
2648 int i;
2649 int j = 0;
2650
2651 for (i = 0; i < *size; i++) {
2652 if (s->do_telnetopt > 1) {
2653 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2654 /* Double IAC means send an IAC */
2655 if (j != i)
2656 buf[j] = buf[i];
2657 j++;
2658 s->do_telnetopt = 1;
2659 } else {
2660 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2661 /* Handle IAC break commands by sending a serial break */
a425d23f 2662 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
6f97dba0
AL		 2663 s->do_telnetopt++;
2664 }
2665 s->do_telnetopt++;
2666 }
2667 if (s->do_telnetopt >= 4) {
2668 s->do_telnetopt = 1;
2669 }
2670 } else {
2671 if ((unsigned char)buf[i] == IAC) {
2672 s->do_telnetopt = 2;
2673 } else {
2674 if (j != i)
2675 buf[j] = buf[i];
2676 j++;
2677 }
2678 }
2679 }
2680 *size = j;
2681}
2682
c76bf6bb 2683static int tcp_get_msgfds(CharDriverState *chr, int *fds, int num)
7d174059
MM		 2684{
2685 TCPCharDriver *s = chr->opaque;
c76bf6bb
NN		 2686 int to_copy = (s->read_msgfds_num < num) ? s->read_msgfds_num : num;
2687
c4095726
MT		 2688 assert(num <= TCP_MAX_FDS);
2689
c76bf6bb 2690 if (to_copy) {
d2fc39b4
SH		 2691 int i;
2692
c76bf6bb
NN		 2693 memcpy(fds, s->read_msgfds, to_copy * sizeof(int));
2694
d2fc39b4
SH		 2695 /* Close unused fds */
2696 for (i = to_copy; i < s->read_msgfds_num; i++) {
2697 close(s->read_msgfds[i]);
2698 }
2699
c76bf6bb
NN		 2700 g_free(s->read_msgfds);
2701 s->read_msgfds = 0;
2702 s->read_msgfds_num = 0;
2703 }
2704
2705 return to_copy;
7d174059
MM		 2706}
2707
d39aac7a
NN		 2708static int tcp_set_msgfds(CharDriverState *chr, int *fds, int num)
2709{
2710 TCPCharDriver *s = chr->opaque;
2711
2712 /* clear old pending fd array */
2713 if (s->write_msgfds) {
2714 g_free(s->write_msgfds);
2715 }
2716
2717 if (num) {
2718 s->write_msgfds = g_malloc(num * sizeof(int));
2719 memcpy(s->write_msgfds, fds, num * sizeof(int));
2720 }
2721
2722 s->write_msgfds_num = num;
2723
2724 return 0;
2725}
2726
73bcc2ac 2727#ifndef _WIN32
7d174059
MM		 2728static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
2729{
2730 TCPCharDriver *s = chr->opaque;
2731 struct cmsghdr *cmsg;
2732
2733 for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
c76bf6bb 2734 int fd_size, i;
7d174059 2735
c76bf6bb 2736 if (cmsg->cmsg_len < CMSG_LEN(sizeof(int)) ||
7d174059 2737 cmsg->cmsg_level != SOL_SOCKET ||
c76bf6bb 2738 cmsg->cmsg_type != SCM_RIGHTS) {
7d174059 2739 continue;
c76bf6bb 2740 }
7d174059 2741
c76bf6bb
NN		 2742 fd_size = cmsg->cmsg_len - CMSG_LEN(0);
2743
2744 if (!fd_size) {
7d174059 2745 continue;
c76bf6bb 2746 }
7d174059 2747
c76bf6bb
NN		 2748 /* close and clean read_msgfds */
2749 for (i = 0; i < s->read_msgfds_num; i++) {
2750 close(s->read_msgfds[i]);
2751 }
9b938c72 2752
c76bf6bb
NN		 2753 if (s->read_msgfds_num) {
2754 g_free(s->read_msgfds);
2755 }
2756
2757 s->read_msgfds_num = fd_size / sizeof(int);
2758 s->read_msgfds = g_malloc(fd_size);
2759 memcpy(s->read_msgfds, CMSG_DATA(cmsg), fd_size);
2760
2761 for (i = 0; i < s->read_msgfds_num; i++) {
2762 int fd = s->read_msgfds[i];
2763 if (fd < 0) {
2764 continue;
2765 }
2766
2767 /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
2768 qemu_set_block(fd);
2769
2770 #ifndef MSG_CMSG_CLOEXEC
2771 qemu_set_cloexec(fd);
2772 #endif
2773 }
7d174059
MM		 2774 }
2775}
2776
9977c894
MM		 2777static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2778{
2779 TCPCharDriver *s = chr->opaque;
7cba04f6 2780 struct msghdr msg = { NULL, };
9977c894 2781 struct iovec iov[1];
7d174059
MM		 2782 union {
2783 struct cmsghdr cmsg;
c4095726 2784 char control[CMSG_SPACE(sizeof(int) * TCP_MAX_FDS)];
7d174059 2785 } msg_control;
06138651 2786 int flags = 0;
7d174059 2787 ssize_t ret;
9977c894
MM		 2788
2789 iov[0].iov_base = buf;
2790 iov[0].iov_len = len;
2791
2792 msg.msg_iov = iov;
2793 msg.msg_iovlen = 1;
7d174059
MM		 2794 msg.msg_control = &msg_control;
2795 msg.msg_controllen = sizeof(msg_control);
2796
06138651
CB		 2797#ifdef MSG_CMSG_CLOEXEC
2798 flags |= MSG_CMSG_CLOEXEC;
2799#endif
2800 ret = recvmsg(s->fd, &msg, flags);
2801 if (ret > 0 && s->is_unix) {
7d174059 2802 unix_process_msgfd(chr, &msg);
06138651 2803 }
9977c894 2804
7d174059 2805 return ret;
9977c894
MM		 2806}
2807#else
2808static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2809{
2810 TCPCharDriver *s = chr->opaque;
00aa0040 2811 return qemu_recv(s->fd, buf, len, 0);
9977c894
MM		 2812}
2813#endif
2814
d3cc5bc4
AS		 2815static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
2816{
2817 TCPCharDriver *s = chr->opaque;
2818 return g_io_create_watch(s->chan, cond);
2819}
2820
7b0bfdf5
NN		 2821static void tcp_chr_disconnect(CharDriverState *chr)
2822{
2823 TCPCharDriver *s = chr->opaque;
2824
2825 s->connected = 0;
2826 if (s->listen_chan) {
2827 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN,
2828 tcp_chr_accept, chr);
2829 }
2830 remove_fd_in_watch(chr);
2831 g_io_channel_unref(s->chan);
2832 s->chan = NULL;
2833 closesocket(s->fd);
2834 s->fd = -1;
16cc4ffe
CM		 2835 SocketAddress_to_str(chr->filename, CHR_MAX_FILENAME_SIZE,
2836 "disconnected:", s->addr, s->is_listen, s->is_telnet);
7b0bfdf5 2837 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
5dd1f02b
CM		 2838 if (s->reconnect_time) {
2839 qemu_chr_socket_restart_timer(chr);
2840 }
7b0bfdf5
NN		 2841}
2842
2ea5a7af 2843static gboolean tcp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 2844{
2845 CharDriverState *chr = opaque;
2846 TCPCharDriver *s = chr->opaque;
9bd7854e 2847 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2848 int len, size;
2849
812c1057
KB		 2850 if (cond & G_IO_HUP) {
2851 /* connection closed */
2852 tcp_chr_disconnect(chr);
2853 return TRUE;
2854 }
2855
2ea5a7af 2856 if (!s->connected || s->max_size <= 0) {
cdbf6e16 2857 return TRUE;
2ea5a7af 2858 }
6f97dba0
AL		 2859 len = sizeof(buf);
2860 if (len > s->max_size)
2861 len = s->max_size;
9977c894 2862 size = tcp_chr_recv(chr, (void *)buf, len);
6f97dba0
AL		 2863 if (size == 0) {
2864 /* connection closed */
7b0bfdf5 2865 tcp_chr_disconnect(chr);
6f97dba0
AL		 2866 } else if (size > 0) {
2867 if (s->do_telnetopt)
2868 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2869 if (size > 0)
fa5efccb 2870 qemu_chr_be_write(chr, buf, size);
6f97dba0 2871 }
2ea5a7af
AL		 2872
2873 return TRUE;
6f97dba0
AL		 2874}
2875
7b0bfdf5
NN		 2876static int tcp_chr_sync_read(CharDriverState *chr, const uint8_t *buf, int len)
2877{
2878 TCPCharDriver *s = chr->opaque;
2879 int size;
2880
2881 if (!s->connected) {
2882 return 0;
2883 }
2884
2885 size = tcp_chr_recv(chr, (void *) buf, len);
2886 if (size == 0) {
2887 /* connection closed */
2888 tcp_chr_disconnect(chr);
2889 }
2890
2891 return size;
2892}
2893
68c18d1c
BS		 2894#ifndef _WIN32
2895CharDriverState *qemu_chr_open_eventfd(int eventfd)
2896{
e9d21c43
DM		 2897 CharDriverState *chr = qemu_chr_open_fd(eventfd, eventfd);
2898
2899 if (chr) {
2900 chr->avail_connections = 1;
2901 }
2902
2903 return chr;
6cbf4c8c 2904}
68c18d1c 2905#endif
6cbf4c8c 2906
6f97dba0
AL		 2907static void tcp_chr_connect(void *opaque)
2908{
2909 CharDriverState *chr = opaque;
2910 TCPCharDriver *s = chr->opaque;
01ca519f
CM		 2911 struct sockaddr_storage ss, ps;
2912 socklen_t ss_len = sizeof(ss), ps_len = sizeof(ps);
16cc4ffe
CM		 2913
2914 memset(&ss, 0, ss_len);
2915 if (getsockname(s->fd, (struct sockaddr *) &ss, &ss_len) != 0) {
2916 snprintf(chr->filename, CHR_MAX_FILENAME_SIZE,
2917 "Error in getsockname: %s\n", strerror(errno));
01ca519f
CM		 2918 } else if (getpeername(s->fd, (struct sockaddr *) &ps, &ps_len) != 0) {
2919 snprintf(chr->filename, CHR_MAX_FILENAME_SIZE,
2920 "Error in getpeername: %s\n", strerror(errno));
16cc4ffe 2921 } else {
01ca519f
CM		 2922 sockaddr_to_str(chr->filename, CHR_MAX_FILENAME_SIZE,
2923 &ss, ss_len, &ps, ps_len,
16cc4ffe
CM		 2924 s->is_listen, s->is_telnet);
2925 }
6f97dba0
AL		 2926
2927 s->connected = 1;
2ea5a7af 2928 if (s->chan) {
7ba9addc
AS		 2929 chr->fd_in_tag = io_add_watch_poll(s->chan, tcp_chr_read_poll,
2930 tcp_chr_read, chr);
bbdd2ad0 2931 }
fee204fd 2932 qemu_chr_be_generic_open(chr);
6f97dba0
AL		 2933}
2934
ac1b84dd
GH		 2935static void tcp_chr_update_read_handler(CharDriverState *chr)
2936{
2937 TCPCharDriver *s = chr->opaque;
2938
2939 remove_fd_in_watch(chr);
2940 if (s->chan) {
2941 chr->fd_in_tag = io_add_watch_poll(s->chan, tcp_chr_read_poll,
2942 tcp_chr_read, chr);
2943 }
2944}
2945
6f97dba0
AL		 2946#define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
2947static void tcp_chr_telnet_init(int fd)
2948{
2949 char buf[3];
2950 /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
2951 IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2952 send(fd, (char *)buf, 3, 0);
2953 IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2954 send(fd, (char *)buf, 3, 0);
2955 IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2956 send(fd, (char *)buf, 3, 0);
2957 IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2958 send(fd, (char *)buf, 3, 0);
2959}
2960
13661089
DB		 2961static int tcp_chr_add_client(CharDriverState *chr, int fd)
2962{
2963 TCPCharDriver *s = chr->opaque;
2964 if (s->fd != -1)
2965 return -1;
2966
f9e8cacc 2967 qemu_set_nonblock(fd);
13661089
DB		 2968 if (s->do_nodelay)
2969 socket_set_nodelay(fd);
2970 s->fd = fd;
2ea5a7af 2971 s->chan = io_channel_from_socket(fd);
910b6368
PB		 2972 if (s->listen_tag) {
2973 g_source_remove(s->listen_tag);
2974 s->listen_tag = 0;
2975 }
13661089
DB		 2976 tcp_chr_connect(chr);
2977
2978 return 0;
2979}
2980
2ea5a7af 2981static gboolean tcp_chr_accept(GIOChannel *channel, GIOCondition cond, void *opaque)
6f97dba0
AL		 2982{
2983 CharDriverState *chr = opaque;
2984 TCPCharDriver *s = chr->opaque;
2985 struct sockaddr_in saddr;
2986#ifndef _WIN32
2987 struct sockaddr_un uaddr;
2988#endif
2989 struct sockaddr *addr;
2990 socklen_t len;
2991 int fd;
2992
2993 for(;;) {
2994#ifndef _WIN32
2995 if (s->is_unix) {
2996 len = sizeof(uaddr);
2997 addr = (struct sockaddr *)&uaddr;
2998 } else
2999#endif
3000 {
3001 len = sizeof(saddr);
3002 addr = (struct sockaddr *)&saddr;
3003 }
40ff6d7e 3004 fd = qemu_accept(s->listen_fd, addr, &len);
6f97dba0 3005 if (fd < 0 && errno != EINTR) {
79f20075 3006 s->listen_tag = 0;
2ea5a7af 3007 return FALSE;
6f97dba0
AL		 3008 } else if (fd >= 0) {
3009 if (s->do_telnetopt)
3010 tcp_chr_telnet_init(fd);
3011 break;
3012 }
3013 }
13661089
DB		 3014 if (tcp_chr_add_client(chr, fd) < 0)
3015 close(fd);
2ea5a7af
AL		 3016
3017 return TRUE;
6f97dba0
AL		 3018}
3019
3020static void tcp_chr_close(CharDriverState *chr)
3021{
3022 TCPCharDriver *s = chr->opaque;
c76bf6bb 3023 int i;
cfb429cb 3024
5dd1f02b
CM		 3025 if (s->reconnect_timer) {
3026 g_source_remove(s->reconnect_timer);
3027 s->reconnect_timer = 0;
3028 }
cfb429cb 3029 qapi_free_SocketAddress(s->addr);
819f56b7 3030 if (s->fd >= 0) {
26da70c7 3031 remove_fd_in_watch(chr);
2ea5a7af
AL		 3032 if (s->chan) {
3033 g_io_channel_unref(s->chan);
3034 }
6f97dba0 3035 closesocket(s->fd);
819f56b7
AL		 3036 }
3037 if (s->listen_fd >= 0) {
2ea5a7af
AL		 3038 if (s->listen_tag) {
3039 g_source_remove(s->listen_tag);
910b6368 3040 s->listen_tag = 0;
2ea5a7af
AL		 3041 }
3042 if (s->listen_chan) {
3043 g_io_channel_unref(s->listen_chan);
3044 }
6f97dba0 3045 closesocket(s->listen_fd);
819f56b7 3046 }
c76bf6bb
NN		 3047 if (s->read_msgfds_num) {
3048 for (i = 0; i < s->read_msgfds_num; i++) {
3049 close(s->read_msgfds[i]);
3050 }
3051 g_free(s->read_msgfds);
3052 }
d39aac7a
NN		 3053 if (s->write_msgfds_num) {
3054 g_free(s->write_msgfds);
3055 }
7267c094 3056 g_free(s);
a425d23f 3057 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 3058}
3059
16cc4ffe 3060static void qemu_chr_finish_socket_connection(CharDriverState *chr, int fd)
6f97dba0 3061{
43ded1a0 3062 TCPCharDriver *s = chr->opaque;
f6bd5d6e 3063
cfb429cb 3064 if (s->is_listen) {
f6bd5d6e 3065 s->listen_fd = fd;
2ea5a7af 3066 s->listen_chan = io_channel_from_socket(s->listen_fd);
43ded1a0
CM		 3067 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN,
3068 tcp_chr_accept, chr);
f6bd5d6e
GH		 3069 } else {
3070 s->connected = 1;
3071 s->fd = fd;
3072 socket_set_nodelay(fd);
2ea5a7af 3073 s->chan = io_channel_from_socket(s->fd);
f6bd5d6e
GH		 3074 tcp_chr_connect(chr);
3075 }
43ded1a0
CM		 3076}
3077
51795029 3078static void qemu_chr_socket_connected(int fd, Error *err, void *opaque)
5dd1f02b
CM		 3079{
3080 CharDriverState *chr = opaque;
5008e5b7 3081 TCPCharDriver *s = chr->opaque;
5dd1f02b
CM		 3082
3083 if (fd < 0) {
5008e5b7 3084 check_report_connect_error(chr, err);
5dd1f02b
CM		 3085 return;
3086 }
3087
5008e5b7 3088 s->connect_err_reported = false;
5dd1f02b
CM		 3089 qemu_chr_finish_socket_connection(chr, fd);
3090}
3091
cfb429cb 3092static bool qemu_chr_open_socket_fd(CharDriverState *chr, Error **errp)
43ded1a0 3093{
cfb429cb 3094 TCPCharDriver *s = chr->opaque;
43ded1a0
CM		 3095 int fd;
3096
cfb429cb
CM		 3097 if (s->is_listen) {
3098 fd = socket_listen(s->addr, errp);
5dd1f02b
CM		 3099 } else if (s->reconnect_time) {
3100 fd = socket_connect(s->addr, errp, qemu_chr_socket_connected, chr);
3101 return fd >= 0;
3102 } else {
cfb429cb 3103 fd = socket_connect(s->addr, errp, NULL, NULL);
f6bd5d6e 3104 }
43ded1a0
CM		 3105 if (fd < 0) {
3106 return false;
3107 }
3108
16cc4ffe
CM		 3109 qemu_chr_finish_socket_connection(chr, fd);
3110 return true;
f6bd5d6e
GH		 3111}
3112
51767e7c 3113/*********************************************************/
3949e594 3114/* Ring buffer chardev */
51767e7c
LL		 3115
3116typedef struct {
3117 size_t size;
3118 size_t prod;
3119 size_t cons;
3120 uint8_t *cbuf;
3949e594 3121} RingBufCharDriver;
51767e7c 3122
3949e594 3123static size_t ringbuf_count(const CharDriverState *chr)
51767e7c 3124{
3949e594 3125 const RingBufCharDriver *d = chr->opaque;
51767e7c 3126
5c230105 3127 return d->prod - d->cons;
51767e7c
LL		 3128}
3129
9005b2a7 3130/* Called with chr_write_lock held. */
3949e594 3131static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
51767e7c 3132{
3949e594 3133 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3134 int i;
3135
3136 if (!buf || (len < 0)) {
3137 return -1;
3138 }
3139
3140 for (i = 0; i < len; i++ ) {
5c230105
MA		 3141 d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
3142 if (d->prod - d->cons > d->size) {
51767e7c
LL		 3143 d->cons = d->prod - d->size;
3144 }
3145 }
3146
3147 return 0;
3148}
3149
3949e594 3150static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len)
51767e7c 3151{
3949e594 3152 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3153 int i;
3154
9005b2a7 3155 qemu_mutex_lock(&chr->chr_write_lock);
5c230105
MA		 3156 for (i = 0; i < len && d->cons != d->prod; i++) {
3157 buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
51767e7c 3158 }
9005b2a7 3159 qemu_mutex_unlock(&chr->chr_write_lock);
51767e7c
LL		 3160
3161 return i;
3162}
3163
3949e594 3164static void ringbuf_chr_close(struct CharDriverState *chr)
51767e7c 3165{
3949e594 3166 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3167
3168 g_free(d->cbuf);
3169 g_free(d);
3170 chr->opaque = NULL;
3171}
3172
4f57378f
MA		 3173static CharDriverState *qemu_chr_open_ringbuf(ChardevRingbuf *opts,
3174 Error **errp)
51767e7c
LL		 3175{
3176 CharDriverState *chr;
3949e594 3177 RingBufCharDriver *d;
51767e7c 3178
db39fcf1 3179 chr = qemu_chr_alloc();
51767e7c
LL		 3180 d = g_malloc(sizeof(*d));
3181
1da48c65 3182 d->size = opts->has_size ? opts->size : 65536;
51767e7c
LL		 3183
3184 /* The size must be power of 2 */
3185 if (d->size & (d->size - 1)) {
4f57378f 3186 error_setg(errp, "size of ringbuf chardev must be power of two");
51767e7c
LL		 3187 goto fail;
3188 }
3189
3190 d->prod = 0;
3191 d->cons = 0;
3192 d->cbuf = g_malloc0(d->size);
3193
3194 chr->opaque = d;
3949e594
MA		 3195 chr->chr_write = ringbuf_chr_write;
3196 chr->chr_close = ringbuf_chr_close;
51767e7c
LL		 3197
3198 return chr;
3199
3200fail:
3201 g_free(d);
3202 g_free(chr);
3203 return NULL;
3204}
3205
8e597779 3206bool chr_is_ringbuf(const CharDriverState *chr)
1f590cf9 3207{
3949e594 3208 return chr->chr_write == ringbuf_chr_write;
1f590cf9
LL		 3209}
3210
3949e594 3211void qmp_ringbuf_write(const char *device, const char *data,
82e59a67 3212 bool has_format, enum DataFormat format,
1f590cf9
LL		 3213 Error **errp)
3214{
3215 CharDriverState *chr;
c4f331b6 3216 const uint8_t *write_data;
1f590cf9 3217 int ret;
3d1bba20 3218 gsize write_count;
1f590cf9
LL		 3219
3220 chr = qemu_chr_find(device);
3221 if (!chr) {
1a69278e 3222 error_setg(errp, "Device '%s' not found", device);
1f590cf9
LL		 3223 return;
3224 }
3225
3949e594
MA		 3226 if (!chr_is_ringbuf(chr)) {
3227 error_setg(errp,"%s is not a ringbuf device", device);
1f590cf9
LL		 3228 return;
3229 }
3230
1f590cf9
LL		 3231 if (has_format && (format == DATA_FORMAT_BASE64)) {
3232 write_data = g_base64_decode(data, &write_count);
3233 } else {
3234 write_data = (uint8_t *)data;
82e59a67 3235 write_count = strlen(data);
1f590cf9
LL		 3236 }
3237
3949e594 3238 ret = ringbuf_chr_write(chr, write_data, write_count);
1f590cf9 3239
13289fb5
MA		 3240 if (write_data != (uint8_t *)data) {
3241 g_free((void *)write_data);
3242 }
3243
1f590cf9
LL		 3244 if (ret < 0) {
3245 error_setg(errp, "Failed to write to device %s", device);
3246 return;
3247 }
3248}
3249
3949e594 3250char *qmp_ringbuf_read(const char *device, int64_t size,
3ab651fc
MA		 3251 bool has_format, enum DataFormat format,
3252 Error **errp)
49b6d722
LL		 3253{
3254 CharDriverState *chr;
c4f331b6 3255 uint8_t *read_data;
49b6d722 3256 size_t count;
3ab651fc 3257 char *data;
49b6d722
LL		 3258
3259 chr = qemu_chr_find(device);
3260 if (!chr) {
1a69278e 3261 error_setg(errp, "Device '%s' not found", device);
49b6d722
LL		 3262 return NULL;
3263 }
3264
3949e594
MA		 3265 if (!chr_is_ringbuf(chr)) {
3266 error_setg(errp,"%s is not a ringbuf device", device);
49b6d722
LL		 3267 return NULL;
3268 }
3269
3270 if (size <= 0) {
3271 error_setg(errp, "size must be greater than zero");
3272 return NULL;
3273 }
3274
3949e594 3275 count = ringbuf_count(chr);
49b6d722 3276 size = size > count ? count : size;
44f3bcd2 3277 read_data = g_malloc(size + 1);
49b6d722 3278
3949e594 3279 ringbuf_chr_read(chr, read_data, size);
49b6d722
LL		 3280
3281 if (has_format && (format == DATA_FORMAT_BASE64)) {
3ab651fc 3282 data = g_base64_encode(read_data, size);
13289fb5 3283 g_free(read_data);
49b6d722 3284 } else {
3949e594
MA		 3285 /*
3286 * FIXME should read only complete, valid UTF-8 characters up
3287 * to @size bytes. Invalid sequences should be replaced by a
3288 * suitable replacement character. Except when (and only
3289 * when) ring buffer lost characters since last read, initial
3290 * continuation characters should be dropped.
3291 */
44f3bcd2 3292 read_data[size] = 0;
3ab651fc 3293 data = (char *)read_data;
49b6d722
LL		 3294 }
3295
3ab651fc 3296 return data;
49b6d722
LL		 3297}
3298
33521634 3299QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
191bc01b 3300{
6ea314d9 3301 char host[65], port[33], width[8], height[8];
aeb2c47a 3302 int pos;
7d31544f 3303 const char *p;
191bc01b 3304 QemuOpts *opts;
8be7e7e4 3305 Error *local_err = NULL;
191bc01b 3306
8be7e7e4 3307 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
84d18f06 3308 if (local_err) {
33394884 3309 error_report_err(local_err);
191bc01b 3310 return NULL;
8be7e7e4 3311 }
191bc01b 3312
7591c5c1
GH		 3313 if (strstart(filename, "mon:", &p)) {
3314 filename = p;
f43e47db 3315 qemu_opt_set(opts, "mux", "on", &error_abort);
02c4bdf1
PB		 3316 if (strcmp(filename, "stdio") == 0) {
3317 /* Monitor is muxed to stdio: do not exit on Ctrl+C by default
3318 * but pass it to the guest. Handle this only for compat syntax,
3319 * for -chardev syntax we have special option for this.
3320 * This is what -nographic did, redirecting+muxing serial+monitor
3321 * to stdio causing Ctrl+C to be passed to guest. */
f43e47db 3322 qemu_opt_set(opts, "signal", "off", &error_abort);
02c4bdf1 3323 }
7591c5c1
GH		 3324 }
3325
f0457e8d
GH		 3326 if (strcmp(filename, "null") == 0 ||
3327 strcmp(filename, "pty") == 0 ||
3328 strcmp(filename, "msmouse") == 0 ||
dc1c21e6 3329 strcmp(filename, "braille") == 0 ||
5692399f 3330 strcmp(filename, "testdev") == 0 ||
f0457e8d 3331 strcmp(filename, "stdio") == 0) {
f43e47db 3332 qemu_opt_set(opts, "backend", filename, &error_abort);
191bc01b
GH		 3333 return opts;
3334 }
6ea314d9 3335 if (strstart(filename, "vc", &p)) {
f43e47db 3336 qemu_opt_set(opts, "backend", "vc", &error_abort);
6ea314d9 3337 if (*p == ':') {
49aa4058 3338 if (sscanf(p+1, "%7[0-9]x%7[0-9]", width, height) == 2) {
6ea314d9 3339 /* pixels */
f43e47db
MA		 3340 qemu_opt_set(opts, "width", width, &error_abort);
3341 qemu_opt_set(opts, "height", height, &error_abort);
49aa4058 3342 } else if (sscanf(p+1, "%7[0-9]Cx%7[0-9]C", width, height) == 2) {
6ea314d9 3343 /* chars */
f43e47db
MA		 3344 qemu_opt_set(opts, "cols", width, &error_abort);
3345 qemu_opt_set(opts, "rows", height, &error_abort);
6ea314d9
GH		 3346 } else {
3347 goto fail;
3348 }
3349 }
3350 return opts;
3351 }
d6c983cd 3352 if (strcmp(filename, "con:") == 0) {
f43e47db 3353 qemu_opt_set(opts, "backend", "console", &error_abort);
d6c983cd
GH		 3354 return opts;
3355 }
48b76496 3356 if (strstart(filename, "COM", NULL)) {
f43e47db
MA		 3357 qemu_opt_set(opts, "backend", "serial", &error_abort);
3358 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3359 return opts;
3360 }
7d31544f 3361 if (strstart(filename, "file:", &p)) {
f43e47db
MA		 3362 qemu_opt_set(opts, "backend", "file", &error_abort);
3363 qemu_opt_set(opts, "path", p, &error_abort);
7d31544f
GH		 3364 return opts;
3365 }
3366 if (strstart(filename, "pipe:", &p)) {
f43e47db
MA		 3367 qemu_opt_set(opts, "backend", "pipe", &error_abort);
3368 qemu_opt_set(opts, "path", p, &error_abort);
7d31544f
GH		 3369 return opts;
3370 }
aeb2c47a
GH		 3371 if (strstart(filename, "tcp:", &p) ||
3372 strstart(filename, "telnet:", &p)) {
3373 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3374 host[0] = 0;
3375 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
3376 goto fail;
3377 }
f43e47db
MA		 3378 qemu_opt_set(opts, "backend", "socket", &error_abort);
3379 qemu_opt_set(opts, "host", host, &error_abort);
3380 qemu_opt_set(opts, "port", port, &error_abort);
aeb2c47a 3381 if (p[pos] == ',') {
dc523cd3
MA		 3382 qemu_opts_do_parse(opts, p+pos+1, NULL, &local_err);
3383 if (local_err) {
3384 error_report_err(local_err);
aeb2c47a 3385 goto fail;
dc523cd3 3386 }
aeb2c47a
GH		 3387 }
3388 if (strstart(filename, "telnet:", &p))
f43e47db 3389 qemu_opt_set(opts, "telnet", "on", &error_abort);
aeb2c47a
GH		 3390 return opts;
3391 }
7e1b35b4 3392 if (strstart(filename, "udp:", &p)) {
f43e47db 3393 qemu_opt_set(opts, "backend", "udp", &error_abort);
7e1b35b4
GH		 3394 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
3395 host[0] = 0;
39324ca4 3396 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
7e1b35b4
GH		 3397 goto fail;
3398 }
3399 }
f43e47db
MA		 3400 qemu_opt_set(opts, "host", host, &error_abort);
3401 qemu_opt_set(opts, "port", port, &error_abort);
7e1b35b4
GH		 3402 if (p[pos] == '@') {
3403 p += pos + 1;
3404 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3405 host[0] = 0;
3406 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
7e1b35b4
GH		 3407 goto fail;
3408 }
3409 }
f43e47db
MA		 3410 qemu_opt_set(opts, "localaddr", host, &error_abort);
3411 qemu_opt_set(opts, "localport", port, &error_abort);
7e1b35b4
GH		 3412 }
3413 return opts;
3414 }
aeb2c47a 3415 if (strstart(filename, "unix:", &p)) {
f43e47db 3416 qemu_opt_set(opts, "backend", "socket", &error_abort);
dc523cd3
MA		 3417 qemu_opts_do_parse(opts, p, "path", &local_err);
3418 if (local_err) {
3419 error_report_err(local_err);
aeb2c47a 3420 goto fail;
dc523cd3 3421 }
aeb2c47a
GH		 3422 return opts;
3423 }
48b76496
GH		 3424 if (strstart(filename, "/dev/parport", NULL) ||
3425 strstart(filename, "/dev/ppi", NULL)) {
f43e47db
MA		 3426 qemu_opt_set(opts, "backend", "parport", &error_abort);
3427 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3428 return opts;
3429 }
3430 if (strstart(filename, "/dev/", NULL)) {
f43e47db
MA		 3431 qemu_opt_set(opts, "backend", "tty", &error_abort);
3432 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3433 return opts;
3434 }
191bc01b 3435
aeb2c47a 3436fail:
191bc01b
GH		 3437 qemu_opts_del(opts);
3438 return NULL;
3439}
3440
846e2e49
GH		 3441static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
3442 Error **errp)
3443{
3444 const char *path = qemu_opt_get(opts, "path");
3445
3446 if (path == NULL) {
3447 error_setg(errp, "chardev: file: no filename given");
3448 return;
3449 }
3450 backend->file = g_new0(ChardevFile, 1);
3451 backend->file->out = g_strdup(path);
3452}
3453
7c358031
GH		 3454static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
3455 Error **errp)
3456{
3457 backend->stdio = g_new0(ChardevStdio, 1);
3458 backend->stdio->has_signal = true;
02c4bdf1 3459 backend->stdio->signal = qemu_opt_get_bool(opts, "signal", true);
7c358031
GH		 3460}
3461
0f1cb51d
GH		 3462static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
3463 Error **errp)
3464{
3465 const char *device = qemu_opt_get(opts, "path");
3466
3467 if (device == NULL) {
3468 error_setg(errp, "chardev: serial/tty: no device path given");
3469 return;
3470 }
3471 backend->serial = g_new0(ChardevHostdev, 1);
3472 backend->serial->device = g_strdup(device);
3473}
3474
dc375097
GH		 3475static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
3476 Error **errp)
3477{
3478 const char *device = qemu_opt_get(opts, "path");
3479
3480 if (device == NULL) {
3481 error_setg(errp, "chardev: parallel: no device path given");
3482 return;
3483 }
3484 backend->parallel = g_new0(ChardevHostdev, 1);
3485 backend->parallel->device = g_strdup(device);
3486}
3487
548cbb36
GH		 3488static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
3489 Error **errp)
3490{
3491 const char *device = qemu_opt_get(opts, "path");
3492
3493 if (device == NULL) {
3494 error_setg(errp, "chardev: pipe: no device path given");
3495 return;
3496 }
3497 backend->pipe = g_new0(ChardevHostdev, 1);
3498 backend->pipe->device = g_strdup(device);
3499}
3500
4f57378f
MA		 3501static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
3502 Error **errp)
1da48c65
GH		 3503{
3504 int val;
3505
3a1da42e 3506 backend->ringbuf = g_new0(ChardevRingbuf, 1);
1da48c65 3507
0f953051 3508 val = qemu_opt_get_size(opts, "size", 0);
1da48c65 3509 if (val != 0) {
3a1da42e
MA		 3510 backend->ringbuf->has_size = true;
3511 backend->ringbuf->size = val;
1da48c65
GH		 3512 }
3513}
3514
bb6fb7c0
GH		 3515static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend,
3516 Error **errp)
3517{
3518 const char *chardev = qemu_opt_get(opts, "chardev");
3519
3520 if (chardev == NULL) {
3521 error_setg(errp, "chardev: mux: no chardev given");
3522 return;
3523 }
3524 backend->mux = g_new0(ChardevMux, 1);
3525 backend->mux->chardev = g_strdup(chardev);
3526}
3527
dafd325d
PM		 3528static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend,
3529 Error **errp)
3530{
3531 bool is_listen = qemu_opt_get_bool(opts, "server", false);
3532 bool is_waitconnect = is_listen && qemu_opt_get_bool(opts, "wait", true);
3533 bool is_telnet = qemu_opt_get_bool(opts, "telnet", false);
3534 bool do_nodelay = !qemu_opt_get_bool(opts, "delay", true);
5dd1f02b 3535 int64_t reconnect = qemu_opt_get_number(opts, "reconnect", 0);
dafd325d
PM		 3536 const char *path = qemu_opt_get(opts, "path");
3537 const char *host = qemu_opt_get(opts, "host");
3538 const char *port = qemu_opt_get(opts, "port");
3539 SocketAddress *addr;
3540
3541 if (!path) {
3542 if (!host) {
3543 error_setg(errp, "chardev: socket: no host given");
3544 return;
3545 }
3546 if (!port) {
3547 error_setg(errp, "chardev: socket: no port given");
3548 return;
3549 }
3550 }
3551
3552 backend->socket = g_new0(ChardevSocket, 1);
3553
3554 backend->socket->has_nodelay = true;
3555 backend->socket->nodelay = do_nodelay;
3556 backend->socket->has_server = true;
3557 backend->socket->server = is_listen;
3558 backend->socket->has_telnet = true;
3559 backend->socket->telnet = is_telnet;
3560 backend->socket->has_wait = true;
3561 backend->socket->wait = is_waitconnect;
5dd1f02b
CM		 3562 backend->socket->has_reconnect = true;
3563 backend->socket->reconnect = reconnect;
dafd325d
PM		 3564
3565 addr = g_new0(SocketAddress, 1);
3566 if (path) {
3567 addr->kind = SOCKET_ADDRESS_KIND_UNIX;
3568 addr->q_unix = g_new0(UnixSocketAddress, 1);
3569 addr->q_unix->path = g_strdup(path);
3570 } else {
3571 addr->kind = SOCKET_ADDRESS_KIND_INET;
3572 addr->inet = g_new0(InetSocketAddress, 1);
3573 addr->inet->host = g_strdup(host);
3574 addr->inet->port = g_strdup(port);
3575 addr->inet->has_to = qemu_opt_get(opts, "to");
3576 addr->inet->to = qemu_opt_get_number(opts, "to", 0);
3577 addr->inet->has_ipv4 = qemu_opt_get(opts, "ipv4");
3578 addr->inet->ipv4 = qemu_opt_get_bool(opts, "ipv4", 0);
3579 addr->inet->has_ipv6 = qemu_opt_get(opts, "ipv6");
3580 addr->inet->ipv6 = qemu_opt_get_bool(opts, "ipv6", 0);
3581 }
3582 backend->socket->addr = addr;
3583}
3584
90a14bfe
PM		 3585static void qemu_chr_parse_udp(QemuOpts *opts, ChardevBackend *backend,
3586 Error **errp)
3587{
3588 const char *host = qemu_opt_get(opts, "host");
3589 const char *port = qemu_opt_get(opts, "port");
3590 const char *localaddr = qemu_opt_get(opts, "localaddr");
3591 const char *localport = qemu_opt_get(opts, "localport");
3592 bool has_local = false;
3593 SocketAddress *addr;
3594
3595 if (host == NULL || strlen(host) == 0) {
3596 host = "localhost";
3597 }
3598 if (port == NULL || strlen(port) == 0) {
3599 error_setg(errp, "chardev: udp: remote port not specified");
3600 return;
3601 }
3602 if (localport == NULL || strlen(localport) == 0) {
3603 localport = "0";
3604 } else {
3605 has_local = true;
3606 }
3607 if (localaddr == NULL || strlen(localaddr) == 0) {
3608 localaddr = "";
3609 } else {
3610 has_local = true;
3611 }
3612
3613 backend->udp = g_new0(ChardevUdp, 1);
3614
3615 addr = g_new0(SocketAddress, 1);
3616 addr->kind = SOCKET_ADDRESS_KIND_INET;
3617 addr->inet = g_new0(InetSocketAddress, 1);
3618 addr->inet->host = g_strdup(host);
3619 addr->inet->port = g_strdup(port);
3620 addr->inet->has_ipv4 = qemu_opt_get(opts, "ipv4");
3621 addr->inet->ipv4 = qemu_opt_get_bool(opts, "ipv4", 0);
3622 addr->inet->has_ipv6 = qemu_opt_get(opts, "ipv6");
3623 addr->inet->ipv6 = qemu_opt_get_bool(opts, "ipv6", 0);
3624 backend->udp->remote = addr;
3625
3626 if (has_local) {
3627 backend->udp->has_local = true;
3628 addr = g_new0(SocketAddress, 1);
3629 addr->kind = SOCKET_ADDRESS_KIND_INET;
3630 addr->inet = g_new0(InetSocketAddress, 1);
3631 addr->inet->host = g_strdup(localaddr);
3632 addr->inet->port = g_strdup(localport);
3633 backend->udp->local = addr;
3634 }
3635}
3636
d654f34e 3637typedef struct CharDriver {
191bc01b 3638 const char *name;
99aec012 3639 ChardevBackendKind kind;
2c5f4882 3640 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
d654f34e
AL		 3641} CharDriver;
3642
3643static GSList *backends;
3644
e4d50d47 3645void register_char_driver(const char *name, ChardevBackendKind kind,
2c5f4882
GH		 3646 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp))
3647{
3648 CharDriver *s;
3649
3650 s = g_malloc0(sizeof(*s));
3651 s->name = g_strdup(name);
3652 s->kind = kind;
3653 s->parse = parse;
3654
3655 backends = g_slist_append(backends, s);
3656}
3657
f69554b9 3658CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
bd2d80b2
GH		 3659 void (*init)(struct CharDriverState *s),
3660 Error **errp)
191bc01b 3661{
0aff637e 3662 Error *local_err = NULL;
d654f34e 3663 CharDriver *cd;
191bc01b 3664 CharDriverState *chr;
d654f34e 3665 GSList *i;
a61ae7f8
PM		 3666 ChardevReturn *ret = NULL;
3667 ChardevBackend *backend;
3668 const char *id = qemu_opts_id(opts);
3669 char *bid = NULL;
191bc01b 3670
a61ae7f8 3671 if (id == NULL) {
312fd5f2 3672 error_setg(errp, "chardev: no id specified");
2274ae9d 3673 goto err;
191bc01b
GH		 3674 }
3675
1bbd185f 3676 if (qemu_opt_get(opts, "backend") == NULL) {
312fd5f2 3677 error_setg(errp, "chardev: \"%s\" missing backend",
bd2d80b2 3678 qemu_opts_id(opts));
2274ae9d 3679 goto err;
1bbd185f 3680 }
d654f34e
AL		 3681 for (i = backends; i; i = i->next) {
3682 cd = i->data;
3683
3684 if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) {
191bc01b 3685 break;
d654f34e 3686 }
191bc01b 3687 }
d654f34e 3688 if (i == NULL) {
312fd5f2 3689 error_setg(errp, "chardev: backend \"%s\" not found",
bd2d80b2 3690 qemu_opt_get(opts, "backend"));
e668287d 3691 goto err;
191bc01b
GH		 3692 }
3693
a61ae7f8 3694 backend = g_new0(ChardevBackend, 1);
edb2fb3c 3695
a61ae7f8
PM		 3696 if (qemu_opt_get_bool(opts, "mux", 0)) {
3697 bid = g_strdup_printf("%s-base", id);
3698 }
2c5f4882 3699
a61ae7f8
PM		 3700 chr = NULL;
3701 backend->kind = cd->kind;
3702 if (cd->parse) {
3703 cd->parse(opts, backend, &local_err);
3704 if (local_err) {
3705 error_propagate(errp, local_err);
2c5f4882
GH		 3706 goto qapi_out;
3707 }
2c5f4882 3708 }
a61ae7f8
PM		 3709 ret = qmp_chardev_add(bid ? bid : id, backend, errp);
3710 if (!ret) {
3711 goto qapi_out;
191bc01b
GH		 3712 }
3713
a61ae7f8
PM		 3714 if (bid) {
3715 qapi_free_ChardevBackend(backend);
3716 qapi_free_ChardevReturn(ret);
3717 backend = g_new0(ChardevBackend, 1);
3718 backend->mux = g_new0(ChardevMux, 1);
3719 backend->kind = CHARDEV_BACKEND_KIND_MUX;
3720 backend->mux->chardev = g_strdup(bid);
3721 ret = qmp_chardev_add(id, backend, errp);
3722 if (!ret) {
3723 chr = qemu_chr_find(bid);
3724 qemu_chr_delete(chr);
3725 chr = NULL;
3726 goto qapi_out;
3727 }
bd5c51ee 3728 }
7591c5c1 3729
a61ae7f8 3730 chr = qemu_chr_find(id);
2274ae9d 3731 chr->opts = opts;
a61ae7f8
PM		 3732
3733qapi_out:
3734 qapi_free_ChardevBackend(backend);
3735 qapi_free_ChardevReturn(ret);
3736 g_free(bid);
191bc01b 3737 return chr;
2274ae9d
GH		 3738
3739err:
3740 qemu_opts_del(opts);
3741 return NULL;
191bc01b
GH		 3742}
3743
27143a44 3744CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
6f97dba0
AL		 3745{
3746 const char *p;
3747 CharDriverState *chr;
191bc01b 3748 QemuOpts *opts;
bd2d80b2 3749 Error *err = NULL;
191bc01b 3750
c845f401
GH		 3751 if (strstart(filename, "chardev:", &p)) {
3752 return qemu_chr_find(p);
3753 }
3754
191bc01b 3755 opts = qemu_chr_parse_compat(label, filename);
7e1b35b4
GH		 3756 if (!opts)
3757 return NULL;
6f97dba0 3758
bd2d80b2 3759 chr = qemu_chr_new_from_opts(opts, init, &err);
84d18f06 3760 if (err) {
565f65d2 3761 error_report_err(err);
bd2d80b2 3762 }
7e1b35b4 3763 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
456d6069 3764 qemu_chr_fe_claim_no_fail(chr);
7e1b35b4 3765 monitor_init(chr, MONITOR_USE_READLINE);
6f97dba0
AL		 3766 }
3767 return chr;
3768}
3769
15f31519 3770void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo)
c48855e1
PB		 3771{
3772 if (chr->chr_set_echo) {
3773 chr->chr_set_echo(chr, echo);
3774 }
3775}
3776
8e25daa8 3777void qemu_chr_fe_set_open(struct CharDriverState *chr, int fe_open)
7c32c4fe 3778{
8e25daa8 3779 if (chr->fe_open == fe_open) {
c0c4bd2c
HG		 3780 return;
3781 }
8e25daa8 3782 chr->fe_open = fe_open;
574b711a
HG		 3783 if (chr->chr_set_fe_open) {
3784 chr->chr_set_fe_open(chr, fe_open);
7c32c4fe
HG		 3785 }
3786}
3787
d61b0c9a
MAL		 3788void qemu_chr_fe_event(struct CharDriverState *chr, int event)
3789{
3790 if (chr->chr_fe_event) {
3791 chr->chr_fe_event(chr, event);
3792 }
3793}
3794
2c8a5942
KW		 3795int qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond,
3796 GIOFunc func, void *user_data)
23673ca7
AL		 3797{
3798 GSource *src;
3799 guint tag;
3800
3801 if (s->chr_add_watch == NULL) {
3802 return -ENOSYS;
3803 }
3804
3805 src = s->chr_add_watch(s, cond);
62c339c5
PB		 3806 if (!src) {
3807 return -EINVAL;
3808 }
3809
23673ca7
AL		 3810 g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
3811 tag = g_source_attach(src, NULL);
3812 g_source_unref(src);
3813
3814 return tag;
3815}
3816
44c473de
HG		 3817int qemu_chr_fe_claim(CharDriverState *s)
3818{
3819 if (s->avail_connections < 1) {
3820 return -1;
3821 }
3822 s->avail_connections--;
3823 return 0;
3824}
3825
3826void qemu_chr_fe_claim_no_fail(CharDriverState *s)
3827{
3828 if (qemu_chr_fe_claim(s) != 0) {
3829 fprintf(stderr, "%s: error chardev \"%s\" already used\n",
3830 __func__, s->label);
3831 exit(1);
3832 }
3833}
3834
3835void qemu_chr_fe_release(CharDriverState *s)
3836{
3837 s->avail_connections++;
3838}
3839
70f24fb6 3840void qemu_chr_delete(CharDriverState *chr)
6f97dba0 3841{
72cf2d4f 3842 QTAILQ_REMOVE(&chardevs, chr, next);
2274ae9d 3843 if (chr->chr_close) {
6f97dba0 3844 chr->chr_close(chr);
2274ae9d 3845 }
7267c094
AL		 3846 g_free(chr->filename);
3847 g_free(chr->label);
4ad60880 3848 qemu_opts_del(chr->opts);
7267c094 3849 g_free(chr);
6f97dba0
AL		 3850}
3851
c5a415a0 3852ChardevInfoList *qmp_query_chardev(Error **errp)
6f97dba0 3853{
c5a415a0 3854 ChardevInfoList *chr_list = NULL;
6f97dba0
AL		 3855 CharDriverState *chr;
3856
72cf2d4f 3857 QTAILQ_FOREACH(chr, &chardevs, next) {
c5a415a0
LC		 3858 ChardevInfoList *info = g_malloc0(sizeof(*info));
3859 info->value = g_malloc0(sizeof(*info->value));
3860 info->value->label = g_strdup(chr->label);
3861 info->value->filename = g_strdup(chr->filename);
32a97ea1 3862 info->value->frontend_open = chr->fe_open;
c5a415a0
LC		 3863
3864 info->next = chr_list;
3865 chr_list = info;
6f97dba0 3866 }
588b3832 3867
c5a415a0 3868 return chr_list;
6f97dba0 3869}
c845f401 3870
77d1c3c6
MK		 3871ChardevBackendInfoList *qmp_query_chardev_backends(Error **errp)
3872{
3873 ChardevBackendInfoList *backend_list = NULL;
3874 CharDriver *c = NULL;
3875 GSList *i = NULL;
3876
3877 for (i = backends; i; i = i->next) {
3878 ChardevBackendInfoList *info = g_malloc0(sizeof(*info));
3879 c = i->data;
3880 info->value = g_malloc0(sizeof(*info->value));
3881 info->value->name = g_strdup(c->name);
3882
3883 info->next = backend_list;
3884 backend_list = info;
3885 }
3886
3887 return backend_list;
3888}
3889
c845f401
GH		 3890CharDriverState *qemu_chr_find(const char *name)
3891{
3892 CharDriverState *chr;
3893
72cf2d4f 3894 QTAILQ_FOREACH(chr, &chardevs, next) {
c845f401
GH		 3895 if (strcmp(chr->label, name) != 0)
3896 continue;
3897 return chr;
3898 }
3899 return NULL;
3900}
0beb4942
AL		 3901
3902/* Get a character (serial) device interface. */
3903CharDriverState *qemu_char_get_next_serial(void)
3904{
3905 static int next_serial;
456d6069 3906 CharDriverState *chr;
0beb4942
AL		 3907
3908 /* FIXME: This function needs to go away: use chardev properties! */
456d6069
HG		 3909
3910 while (next_serial < MAX_SERIAL_PORTS && serial_hds[next_serial]) {
3911 chr = serial_hds[next_serial++];
3912 qemu_chr_fe_claim_no_fail(chr);
3913 return chr;
3914 }
3915 return NULL;
0beb4942
AL		 3916}
3917
4d454574
PB		 3918QemuOptsList qemu_chardev_opts = {
3919 .name = "chardev",
3920 .implied_opt_name = "backend",
3921 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
3922 .desc = {
3923 {
3924 .name = "backend",
3925 .type = QEMU_OPT_STRING,
3926 },{
3927 .name = "path",
3928 .type = QEMU_OPT_STRING,
3929 },{
3930 .name = "host",
3931 .type = QEMU_OPT_STRING,
3932 },{
3933 .name = "port",
3934 .type = QEMU_OPT_STRING,
3935 },{
3936 .name = "localaddr",
3937 .type = QEMU_OPT_STRING,
3938 },{
3939 .name = "localport",
3940 .type = QEMU_OPT_STRING,
3941 },{
3942 .name = "to",
3943 .type = QEMU_OPT_NUMBER,
3944 },{
3945 .name = "ipv4",
3946 .type = QEMU_OPT_BOOL,
3947 },{
3948 .name = "ipv6",
3949 .type = QEMU_OPT_BOOL,
3950 },{
3951 .name = "wait",
3952 .type = QEMU_OPT_BOOL,
3953 },{
3954 .name = "server",
3955 .type = QEMU_OPT_BOOL,
3956 },{
3957 .name = "delay",
3958 .type = QEMU_OPT_BOOL,
5dd1f02b
CM		 3959 },{
3960 .name = "reconnect",
3961 .type = QEMU_OPT_NUMBER,
4d454574
PB		 3962 },{
3963 .name = "telnet",
3964 .type = QEMU_OPT_BOOL,
3965 },{
3966 .name = "width",
3967 .type = QEMU_OPT_NUMBER,
3968 },{
3969 .name = "height",
3970 .type = QEMU_OPT_NUMBER,
3971 },{
3972 .name = "cols",
3973 .type = QEMU_OPT_NUMBER,
3974 },{
3975 .name = "rows",
3976 .type = QEMU_OPT_NUMBER,
3977 },{
3978 .name = "mux",
3979 .type = QEMU_OPT_BOOL,
3980 },{
3981 .name = "signal",
3982 .type = QEMU_OPT_BOOL,
3983 },{
3984 .name = "name",
3985 .type = QEMU_OPT_STRING,
3986 },{
3987 .name = "debug",
3988 .type = QEMU_OPT_NUMBER,
51767e7c 3989 },{
3949e594 3990 .name = "size",
de1cc36e 3991 .type = QEMU_OPT_SIZE,
bb6fb7c0
GH		 3992 },{
3993 .name = "chardev",
3994 .type = QEMU_OPT_STRING,
4d454574
PB		 3995 },
3996 { /* end of list */ }
3997 },
3998};
f1a1a356 3999
ffbdbe59
GH		 4000#ifdef _WIN32
4001
4002static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
4003{
4004 HANDLE out;
4005
e859eda5 4006 if (file->has_in) {
ffbdbe59
GH		 4007 error_setg(errp, "input file not supported");
4008 return NULL;
4009 }
4010
4011 out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
4012 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
4013 if (out == INVALID_HANDLE_VALUE) {
4014 error_setg(errp, "open %s failed", file->out);
4015 return NULL;
4016 }
4017 return qemu_chr_open_win_file(out);
4018}
4019
d36b2b90
MA		 4020static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
4021 Error **errp)
d59044ef 4022{
d36b2b90
MA		 4023 return qemu_chr_open_win_path(serial->device);
4024}
4025
4026static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
4027 Error **errp)
4028{
4029 error_setg(errp, "character device backend type 'parallel' not supported");
4030 return NULL;
d59044ef
GH		 4031}
4032
ffbdbe59
GH		 4033#else /* WIN32 */
4034
4035static int qmp_chardev_open_file_source(char *src, int flags,
4036 Error **errp)
4037{
4038 int fd = -1;
4039
4040 TFR(fd = qemu_open(src, flags, 0666));
4041 if (fd == -1) {
20c39760 4042 error_setg_file_open(errp, errno, src);
ffbdbe59
GH		 4043 }
4044 return fd;
4045}
4046
4047static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
4048{
5f758366 4049 int flags, in = -1, out;
ffbdbe59
GH		 4050
4051 flags = O_WRONLY | O_TRUNC | O_CREAT | O_BINARY;
4052 out = qmp_chardev_open_file_source(file->out, flags, errp);
5f758366 4053 if (out < 0) {
ffbdbe59
GH		 4054 return NULL;
4055 }
4056
e859eda5 4057 if (file->has_in) {
ffbdbe59
GH		 4058 flags = O_RDONLY;
4059 in = qmp_chardev_open_file_source(file->in, flags, errp);
5f758366 4060 if (in < 0) {
ffbdbe59
GH		 4061 qemu_close(out);
4062 return NULL;
4063 }
4064 }
4065
4066 return qemu_chr_open_fd(in, out);
4067}
4068
d36b2b90
MA		 4069static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
4070 Error **errp)
d59044ef 4071{
d59044ef 4072#ifdef HAVE_CHARDEV_TTY
d36b2b90
MA		 4073 int fd;
4074
4075 fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
5f758366 4076 if (fd < 0) {
d36b2b90 4077 return NULL;
39099991 4078 }
f9e8cacc 4079 qemu_set_nonblock(fd);
d36b2b90
MA		 4080 return qemu_chr_open_tty_fd(fd);
4081#else
4082 error_setg(errp, "character device backend type 'serial' not supported");
4083 return NULL;
88a946d3 4084#endif
d36b2b90
MA		 4085}
4086
4087static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
4088 Error **errp)
4089{
88a946d3 4090#ifdef HAVE_CHARDEV_PARPORT
d36b2b90
MA		 4091 int fd;
4092
4093 fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
5f758366 4094 if (fd < 0) {
d59044ef
GH		 4095 return NULL;
4096 }
d36b2b90
MA		 4097 return qemu_chr_open_pp_fd(fd);
4098#else
4099 error_setg(errp, "character device backend type 'parallel' not supported");
4100 return NULL;
4101#endif
d59044ef
GH		 4102}
4103
ffbdbe59
GH		 4104#endif /* WIN32 */
4105
5008e5b7
CM		 4106static void socket_try_connect(CharDriverState *chr)
4107{
4108 Error *err = NULL;
4109
4110 if (!qemu_chr_open_socket_fd(chr, &err)) {
4111 check_report_connect_error(chr, err);
4112 }
4113}
4114
5dd1f02b
CM		 4115static gboolean socket_reconnect_timeout(gpointer opaque)
4116{
4117 CharDriverState *chr = opaque;
4118 TCPCharDriver *s = chr->opaque;
5dd1f02b
CM		 4119
4120 s->reconnect_timer = 0;
4121
4122 if (chr->be_open) {
4123 return false;
4124 }
4125
5008e5b7 4126 socket_try_connect(chr);
5dd1f02b
CM		 4127
4128 return false;
4129}
4130
f6bd5d6e
GH		 4131static CharDriverState *qmp_chardev_open_socket(ChardevSocket *sock,
4132 Error **errp)
4133{
43ded1a0
CM		 4134 CharDriverState *chr;
4135 TCPCharDriver *s;
f6bd5d6e
GH		 4136 SocketAddress *addr = sock->addr;
4137 bool do_nodelay = sock->has_nodelay ? sock->nodelay : false;
4138 bool is_listen = sock->has_server ? sock->server : true;
4139 bool is_telnet = sock->has_telnet ? sock->telnet : false;
4140 bool is_waitconnect = sock->has_wait ? sock->wait : false;
5dd1f02b 4141 int64_t reconnect = sock->has_reconnect ? sock->reconnect : 0;
43ded1a0
CM		 4142
4143 chr = qemu_chr_alloc();
4144 s = g_malloc0(sizeof(TCPCharDriver));
4145
4146 s->fd = -1;
4147 s->listen_fd = -1;
4148 s->is_unix = addr->kind == SOCKET_ADDRESS_KIND_UNIX;
cfb429cb
CM		 4149 s->is_listen = is_listen;
4150 s->is_telnet = is_telnet;
43ded1a0 4151 s->do_nodelay = do_nodelay;
cfb429cb 4152 qapi_copy_SocketAddress(&s->addr, sock->addr);
43ded1a0
CM		 4153
4154 chr->opaque = s;
4155 chr->chr_write = tcp_chr_write;
4156 chr->chr_sync_read = tcp_chr_sync_read;
4157 chr->chr_close = tcp_chr_close;
4158 chr->get_msgfds = tcp_get_msgfds;
4159 chr->set_msgfds = tcp_set_msgfds;
4160 chr->chr_add_client = tcp_chr_add_client;
4161 chr->chr_add_watch = tcp_chr_add_watch;
4162 chr->chr_update_read_handler = tcp_chr_update_read_handler;
4163 /* be isn't opened until we get a connection */
4164 chr->explicit_be_open = true;
4165
4166 chr->filename = g_malloc(CHR_MAX_FILENAME_SIZE);
16cc4ffe
CM		 4167 SocketAddress_to_str(chr->filename, CHR_MAX_FILENAME_SIZE, "disconnected:",
4168 addr, is_listen, is_telnet);
f6bd5d6e
GH		 4169
4170 if (is_listen) {
43ded1a0
CM		 4171 if (is_telnet) {
4172 s->do_telnetopt = 1;
4173 }
5dd1f02b
CM		 4174 } else if (reconnect > 0) {
4175 s->reconnect_time = reconnect;
f6bd5d6e 4176 }
43ded1a0 4177
5008e5b7
CM		 4178 if (s->reconnect_time) {
4179 socket_try_connect(chr);
4180 } else if (!qemu_chr_open_socket_fd(chr, errp)) {
4181 g_free(s);
4182 g_free(chr->filename);
4183 g_free(chr);
4184 return NULL;
f6bd5d6e 4185 }
43ded1a0
CM		 4186
4187 if (is_listen && is_waitconnect) {
4188 fprintf(stderr, "QEMU waiting for connection on: %s\n",
4189 chr->filename);
4190 tcp_chr_accept(s->listen_chan, G_IO_IN, chr);
4191 qemu_set_nonblock(s->listen_fd);
4192 }
4193
4194 return chr;
f6bd5d6e
GH		 4195}
4196
08d0ab3f
LL		 4197static CharDriverState *qmp_chardev_open_udp(ChardevUdp *udp,
4198 Error **errp)
3ecc059d
GH		 4199{
4200 int fd;
4201
08d0ab3f 4202 fd = socket_dgram(udp->remote, udp->local, errp);
5f758366 4203 if (fd < 0) {
3ecc059d
GH		 4204 return NULL;
4205 }
4206 return qemu_chr_open_udp_fd(fd);
4207}
4208
f1a1a356
GH		 4209ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
4210 Error **errp)
4211{
4212 ChardevReturn *ret = g_new0(ChardevReturn, 1);
edb2fb3c 4213 CharDriverState *base, *chr = NULL;
f1a1a356
GH		 4214
4215 chr = qemu_chr_find(id);
4216 if (chr) {
4217 error_setg(errp, "Chardev '%s' already exists", id);
4218 g_free(ret);
4219 return NULL;
4220 }
4221
4222 switch (backend->kind) {
ffbdbe59
GH		 4223 case CHARDEV_BACKEND_KIND_FILE:
4224 chr = qmp_chardev_open_file(backend->file, errp);
4225 break;
d36b2b90
MA		 4226 case CHARDEV_BACKEND_KIND_SERIAL:
4227 chr = qmp_chardev_open_serial(backend->serial, errp);
4228 break;
4229 case CHARDEV_BACKEND_KIND_PARALLEL:
4230 chr = qmp_chardev_open_parallel(backend->parallel, errp);
d59044ef 4231 break;
548cbb36
GH		 4232 case CHARDEV_BACKEND_KIND_PIPE:
4233 chr = qemu_chr_open_pipe(backend->pipe);
4234 break;
f6bd5d6e
GH		 4235 case CHARDEV_BACKEND_KIND_SOCKET:
4236 chr = qmp_chardev_open_socket(backend->socket, errp);
4237 break;
08d0ab3f
LL		 4238 case CHARDEV_BACKEND_KIND_UDP:
4239 chr = qmp_chardev_open_udp(backend->udp, errp);
3ecc059d 4240 break;
0a1a7fab
GH		 4241#ifdef HAVE_CHARDEV_TTY
4242 case CHARDEV_BACKEND_KIND_PTY:
e68c5958 4243 chr = qemu_chr_open_pty(id, ret);
0a1a7fab 4244 break;
0a1a7fab 4245#endif
f1a1a356 4246 case CHARDEV_BACKEND_KIND_NULL:
80dca9e6 4247 chr = qemu_chr_open_null();
f1a1a356 4248 break;
edb2fb3c
GH		 4249 case CHARDEV_BACKEND_KIND_MUX:
4250 base = qemu_chr_find(backend->mux->chardev);
4251 if (base == NULL) {
4252 error_setg(errp, "mux: base chardev %s not found",
4253 backend->mux->chardev);
4254 break;
4255 }
4256 chr = qemu_chr_open_mux(base);
4257 break;
f5a51cab
GH		 4258 case CHARDEV_BACKEND_KIND_MSMOUSE:
4259 chr = qemu_chr_open_msmouse();
4260 break;
2d57286d
GH		 4261#ifdef CONFIG_BRLAPI
4262 case CHARDEV_BACKEND_KIND_BRAILLE:
4263 chr = chr_baum_init();
4264 break;
4265#endif
5692399f
PB		 4266 case CHARDEV_BACKEND_KIND_TESTDEV:
4267 chr = chr_testdev_init();
4268 break;
7c358031
GH		 4269 case CHARDEV_BACKEND_KIND_STDIO:
4270 chr = qemu_chr_open_stdio(backend->stdio);
4271 break;
d9ac374f
GH		 4272#ifdef _WIN32
4273 case CHARDEV_BACKEND_KIND_CONSOLE:
4274 chr = qemu_chr_open_win_con();
4275 break;
cd153e2a
GH		 4276#endif
4277#ifdef CONFIG_SPICE
4278 case CHARDEV_BACKEND_KIND_SPICEVMC:
4279 chr = qemu_chr_open_spice_vmc(backend->spicevmc->type);
4280 break;
4281 case CHARDEV_BACKEND_KIND_SPICEPORT:
4282 chr = qemu_chr_open_spice_port(backend->spiceport->fqdn);
4283 break;
d9ac374f 4284#endif
702ec69c
GH		 4285 case CHARDEV_BACKEND_KIND_VC:
4286 chr = vc_init(backend->vc);
4287 break;
3a1da42e 4288 case CHARDEV_BACKEND_KIND_RINGBUF:
1da48c65 4289 case CHARDEV_BACKEND_KIND_MEMORY:
3a1da42e 4290 chr = qemu_chr_open_ringbuf(backend->ringbuf, errp);
1da48c65 4291 break;
f1a1a356
GH		 4292 default:
4293 error_setg(errp, "unknown chardev backend (%d)", backend->kind);
4294 break;
4295 }
4296
3894c787
MA		 4297 /*
4298 * Character backend open hasn't been fully converted to the Error
4299 * API. Some opens fail without setting an error. Set a generic
4300 * error then.
4301 * TODO full conversion to Error API
4302 */
4303 if (chr == NULL && errp && !*errp) {
f1a1a356
GH		 4304 error_setg(errp, "Failed to create chardev");
4305 }
4306 if (chr) {
4307 chr->label = g_strdup(id);
edb2fb3c
GH		 4308 chr->avail_connections =
4309 (backend->kind == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1;
60d95386
GH		 4310 if (!chr->filename) {
4311 chr->filename = g_strdup(ChardevBackendKind_lookup[backend->kind]);
4312 }
bd5c51ee
MR		 4313 if (!chr->explicit_be_open) {
4314 qemu_chr_be_event(chr, CHR_EVENT_OPENED);
4315 }
f1a1a356
GH		 4316 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
4317 return ret;
4318 } else {
4319 g_free(ret);
4320 return NULL;
4321 }
4322}
4323
4324void qmp_chardev_remove(const char *id, Error **errp)
4325{
4326 CharDriverState *chr;
4327
4328 chr = qemu_chr_find(id);
8108fd3e 4329 if (chr == NULL) {
f1a1a356
GH		 4330 error_setg(errp, "Chardev '%s' not found", id);
4331 return;
4332 }
4333 if (chr->chr_can_read || chr->chr_read ||
4334 chr->chr_event || chr->handler_opaque) {
4335 error_setg(errp, "Chardev '%s' is busy", id);
4336 return;
4337 }
4338 qemu_chr_delete(chr);
4339}
d654f34e
AL		 4340
4341static void register_types(void)
4342{
e4d50d47
PM		 4343 register_char_driver("null", CHARDEV_BACKEND_KIND_NULL, NULL);
4344 register_char_driver("socket", CHARDEV_BACKEND_KIND_SOCKET,
4345 qemu_chr_parse_socket);
4346 register_char_driver("udp", CHARDEV_BACKEND_KIND_UDP, qemu_chr_parse_udp);
4347 register_char_driver("ringbuf", CHARDEV_BACKEND_KIND_RINGBUF,
4348 qemu_chr_parse_ringbuf);
4349 register_char_driver("file", CHARDEV_BACKEND_KIND_FILE,
4350 qemu_chr_parse_file_out);
4351 register_char_driver("stdio", CHARDEV_BACKEND_KIND_STDIO,
4352 qemu_chr_parse_stdio);
4353 register_char_driver("serial", CHARDEV_BACKEND_KIND_SERIAL,
4354 qemu_chr_parse_serial);
4355 register_char_driver("tty", CHARDEV_BACKEND_KIND_SERIAL,
4356 qemu_chr_parse_serial);
4357 register_char_driver("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
4358 qemu_chr_parse_parallel);
4359 register_char_driver("parport", CHARDEV_BACKEND_KIND_PARALLEL,
4360 qemu_chr_parse_parallel);
4361 register_char_driver("pty", CHARDEV_BACKEND_KIND_PTY, NULL);
4362 register_char_driver("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL);
4363 register_char_driver("pipe", CHARDEV_BACKEND_KIND_PIPE,
4364 qemu_chr_parse_pipe);
4365 register_char_driver("mux", CHARDEV_BACKEND_KIND_MUX, qemu_chr_parse_mux);
c11ed966 4366 /* Bug-compatibility: */
e4d50d47
PM		 4367 register_char_driver("memory", CHARDEV_BACKEND_KIND_MEMORY,
4368 qemu_chr_parse_ringbuf);
7b7ab18d
MR		 4369 /* this must be done after machine init, since we register FEs with muxes
4370 * as part of realize functions like serial_isa_realizefn when -nographic
4371 * is specified
4372 */
4373 qemu_add_machine_init_done_notifier(&muxes_realize_notify);
d654f34e
AL		 4374}
4375
4376type_init(register_types);
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