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6f97dba0
AL		 1/*
2 * QEMU System Emulator
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24#include "qemu-common.h"
83c9089e 25#include "monitor/monitor.h"
9c17d615 26#include "sysemu/sysemu.h"
d49b6836 27#include "qemu/error-report.h"
1de7afc9 28#include "qemu/timer.h"
dccfcd0e 29#include "sysemu/char.h"
cf3ebac7 30#include "hw/usb.h"
c5a415a0 31#include "qmp-commands.h"
cfb429cb
CM		 32#include "qapi/qmp-input-visitor.h"
33#include "qapi/qmp-output-visitor.h"
34#include "qapi-visit.h"
6f97dba0
AL		 35
36#include <unistd.h>
37#include <fcntl.h>
6f97dba0
AL		 38#include <time.h>
39#include <errno.h>
40#include <sys/time.h>
41#include <zlib.h>
42
43#ifndef _WIN32
44#include <sys/times.h>
45#include <sys/wait.h>
46#include <termios.h>
47#include <sys/mman.h>
48#include <sys/ioctl.h>
24646c7e 49#include <sys/resource.h>
6f97dba0
AL		 50#include <sys/socket.h>
51#include <netinet/in.h>
24646c7e 52#include <net/if.h>
24646c7e 53#include <arpa/inet.h>
6f97dba0
AL		 54#include <dirent.h>
55#include <netdb.h>
56#include <sys/select.h>
71e72a19 57#ifdef CONFIG_BSD
6f97dba0 58#include <sys/stat.h>
3294ce18
MT		 59#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
60#include <dev/ppbus/ppi.h>
61#include <dev/ppbus/ppbconf.h>
c5e97233 62#elif defined(__DragonFly__)
c5e97233
BS		 63#include <dev/misc/ppi/ppi.h>
64#include <bus/ppbus/ppbconf.h>
6f97dba0 65#endif
bbe813a2 66#else
6f97dba0 67#ifdef __linux__
6f97dba0
AL		 68#include <linux/ppdev.h>
69#include <linux/parport.h>
70#endif
71#ifdef __sun__
72#include <sys/stat.h>
73#include <sys/ethernet.h>
74#include <sys/sockio.h>
75#include <netinet/arp.h>
76#include <netinet/in.h>
77#include <netinet/in_systm.h>
78#include <netinet/ip.h>
79#include <netinet/ip_icmp.h> // must come after ip.h
80#include <netinet/udp.h>
81#include <netinet/tcp.h>
6f97dba0
AL		 82#endif
83#endif
84#endif
85
1de7afc9 86#include "qemu/sockets.h"
cbcc6336 87#include "ui/qemu-spice.h"
6f97dba0 88
9bd7854e 89#define READ_BUF_LEN 4096
7b0bfdf5 90#define READ_RETRIES 10
9f781168 91#define CHR_MAX_FILENAME_SIZE 256
c4095726 92#define TCP_MAX_FDS 16
9bd7854e 93
cfb429cb
CM		 94/***********************************************************/
95/* Socket address helpers */
96static void qapi_copy_SocketAddress(SocketAddress **p_dest,
97 SocketAddress *src)
98{
99 QmpOutputVisitor *qov;
100 QmpInputVisitor *qiv;
101 Visitor *ov, *iv;
102 QObject *obj;
103
104 *p_dest = NULL;
105
106 qov = qmp_output_visitor_new();
107 ov = qmp_output_get_visitor(qov);
108 visit_type_SocketAddress(ov, &src, NULL, &error_abort);
109 obj = qmp_output_get_qobject(qov);
110 qmp_output_visitor_cleanup(qov);
111 if (!obj) {
112 return;
113 }
114
115 qiv = qmp_input_visitor_new(obj);
116 iv = qmp_input_get_visitor(qiv);
117 visit_type_SocketAddress(iv, p_dest, NULL, &error_abort);
118 qmp_input_visitor_cleanup(qiv);
119 qobject_decref(obj);
120}
121
16cc4ffe
CM		 122static int SocketAddress_to_str(char *dest, int max_len,
123 const char *prefix, SocketAddress *addr,
124 bool is_listen, bool is_telnet)
125{
126 switch (addr->kind) {
127 case SOCKET_ADDRESS_KIND_INET:
128 return snprintf(dest, max_len, "%s%s:%s:%s%s", prefix,
129 is_telnet ? "telnet" : "tcp", addr->inet->host,
130 addr->inet->port, is_listen ? ",server" : "");
131 break;
132 case SOCKET_ADDRESS_KIND_UNIX:
133 return snprintf(dest, max_len, "%sunix:%s%s", prefix,
134 addr->q_unix->path, is_listen ? ",server" : "");
135 break;
136 case SOCKET_ADDRESS_KIND_FD:
137 return snprintf(dest, max_len, "%sfd:%s%s", prefix, addr->fd->str,
138 is_listen ? ",server" : "");
139 break;
140 default:
141 abort();
142 }
143}
144
145static int sockaddr_to_str(char *dest, int max_len,
146 struct sockaddr_storage *ss, socklen_t ss_len,
01ca519f 147 struct sockaddr_storage *ps, socklen_t ps_len,
16cc4ffe
CM		 148 bool is_listen, bool is_telnet)
149{
01ca519f
CM		 150 char shost[NI_MAXHOST], sserv[NI_MAXSERV];
151 char phost[NI_MAXHOST], pserv[NI_MAXSERV];
16cc4ffe
CM		 152 const char *left = "", *right = "";
153
154 switch (ss->ss_family) {
155#ifndef _WIN32
156 case AF_UNIX:
157 return snprintf(dest, max_len, "unix:%s%s",
158 ((struct sockaddr_un *)(ss))->sun_path,
159 is_listen ? ",server" : "");
160#endif
161 case AF_INET6:
162 left = "[";
163 right = "]";
164 /* fall through */
165 case AF_INET:
01ca519f
CM		 166 getnameinfo((struct sockaddr *) ss, ss_len, shost, sizeof(shost),
167 sserv, sizeof(sserv), NI_NUMERICHOST | NI_NUMERICSERV);
168 getnameinfo((struct sockaddr *) ps, ps_len, phost, sizeof(phost),
169 pserv, sizeof(pserv), NI_NUMERICHOST | NI_NUMERICSERV);
170 return snprintf(dest, max_len, "%s:%s%s%s:%s%s <-> %s%s%s:%s",
16cc4ffe 171 is_telnet ? "telnet" : "tcp",
01ca519f
CM		 172 left, shost, right, sserv,
173 is_listen ? ",server" : "",
174 left, phost, right, pserv);
16cc4ffe
CM		 175
176 default:
177 return snprintf(dest, max_len, "unknown");
178 }
179}
180
6f97dba0
AL		 181/***********************************************************/
182/* character device */
183
72cf2d4f
BS		 184static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
185 QTAILQ_HEAD_INITIALIZER(chardevs);
2970a6c9 186
db39fcf1
PB		 187CharDriverState *qemu_chr_alloc(void)
188{
189 CharDriverState *chr = g_malloc0(sizeof(CharDriverState));
f3db17b9 190 qemu_mutex_init(&chr->chr_write_lock);
db39fcf1
PB		 191 return chr;
192}
193
a425d23f 194void qemu_chr_be_event(CharDriverState *s, int event)
6f97dba0 195{
73cdf3f2
AG		 196 /* Keep track if the char device is open */
197 switch (event) {
198 case CHR_EVENT_OPENED:
16665b94 199 s->be_open = 1;
73cdf3f2
AG		 200 break;
201 case CHR_EVENT_CLOSED:
16665b94 202 s->be_open = 0;
73cdf3f2
AG		 203 break;
204 }
205
6f97dba0
AL		 206 if (!s->chr_event)
207 return;
208 s->chr_event(s->handler_opaque, event);
209}
210
fee204fd 211void qemu_chr_be_generic_open(CharDriverState *s)
6f97dba0 212{
bd5c51ee 213 qemu_chr_be_event(s, CHR_EVENT_OPENED);
6f97dba0
AL		 214}
215
2cc6e0a1 216int qemu_chr_fe_write(CharDriverState *s, const uint8_t *buf, int len)
6f97dba0 217{
9005b2a7
PB		 218 int ret;
219
220 qemu_mutex_lock(&s->chr_write_lock);
221 ret = s->chr_write(s, buf, len);
222 qemu_mutex_unlock(&s->chr_write_lock);
223 return ret;
6f97dba0
AL		 224}
225
cd18720a
AL		 226int qemu_chr_fe_write_all(CharDriverState *s, const uint8_t *buf, int len)
227{
228 int offset = 0;
09313047 229 int res = 0;
cd18720a 230
9005b2a7 231 qemu_mutex_lock(&s->chr_write_lock);
cd18720a
AL		 232 while (offset < len) {
233 do {
234 res = s->chr_write(s, buf + offset, len - offset);
235 if (res == -1 && errno == EAGAIN) {
236 g_usleep(100);
237 }
238 } while (res == -1 && errno == EAGAIN);
239
9005b2a7 240 if (res <= 0) {
cd18720a
AL		 241 break;
242 }
243
cd18720a
AL		 244 offset += res;
245 }
9005b2a7 246 qemu_mutex_unlock(&s->chr_write_lock);
cd18720a 247
9005b2a7
PB		 248 if (res < 0) {
249 return res;
250 }
cd18720a
AL		 251 return offset;
252}
253
7b0bfdf5
NN		 254int qemu_chr_fe_read_all(CharDriverState *s, uint8_t *buf, int len)
255{
256 int offset = 0, counter = 10;
257 int res;
258
259 if (!s->chr_sync_read) {
260 return 0;
261 }
262
263 while (offset < len) {
264 do {
265 res = s->chr_sync_read(s, buf + offset, len - offset);
266 if (res == -1 && errno == EAGAIN) {
267 g_usleep(100);
268 }
269 } while (res == -1 && errno == EAGAIN);
270
271 if (res == 0) {
272 break;
273 }
274
275 if (res < 0) {
276 return res;
277 }
278
279 offset += res;
280
281 if (!counter--) {
282 break;
283 }
284 }
285
286 return offset;
287}
288
41084f1b 289int qemu_chr_fe_ioctl(CharDriverState *s, int cmd, void *arg)
6f97dba0
AL		 290{
291 if (!s->chr_ioctl)
292 return -ENOTSUP;
293 return s->chr_ioctl(s, cmd, arg);
294}
295
909cda12 296int qemu_chr_be_can_write(CharDriverState *s)
6f97dba0
AL		 297{
298 if (!s->chr_can_read)
299 return 0;
300 return s->chr_can_read(s->handler_opaque);
301}
302
fa5efccb 303void qemu_chr_be_write(CharDriverState *s, uint8_t *buf, int len)
6f97dba0 304{
ac310734
SW		 305 if (s->chr_read) {
306 s->chr_read(s->handler_opaque, buf, len);
307 }
6f97dba0
AL		 308}
309
74c0d6f0 310int qemu_chr_fe_get_msgfd(CharDriverState *s)
7d174059 311{
c76bf6bb 312 int fd;
4f858614 313 return (qemu_chr_fe_get_msgfds(s, &fd, 1) == 1) ? fd : -1;
c76bf6bb
NN		 314}
315
316int qemu_chr_fe_get_msgfds(CharDriverState *s, int *fds, int len)
317{
318 return s->get_msgfds ? s->get_msgfds(s, fds, len) : -1;
7d174059
MM		 319}
320
d39aac7a
NN		 321int qemu_chr_fe_set_msgfds(CharDriverState *s, int *fds, int num)
322{
323 return s->set_msgfds ? s->set_msgfds(s, fds, num) : -1;
324}
325
13661089
DB		 326int qemu_chr_add_client(CharDriverState *s, int fd)
327{
328 return s->chr_add_client ? s->chr_add_client(s, fd) : -1;
329}
330
6f97dba0
AL		 331void qemu_chr_accept_input(CharDriverState *s)
332{
333 if (s->chr_accept_input)
334 s->chr_accept_input(s);
98c8ee1d 335 qemu_notify_event();
6f97dba0
AL		 336}
337
e7e71b0e 338void qemu_chr_fe_printf(CharDriverState *s, const char *fmt, ...)
6f97dba0 339{
9bd7854e 340 char buf[READ_BUF_LEN];
6f97dba0
AL		 341 va_list ap;
342 va_start(ap, fmt);
343 vsnprintf(buf, sizeof(buf), fmt, ap);
2cc6e0a1 344 qemu_chr_fe_write(s, (uint8_t *)buf, strlen(buf));
6f97dba0
AL		 345 va_end(ap);
346}
347
386a5a1e
AS		 348static void remove_fd_in_watch(CharDriverState *chr);
349
6f97dba0 350void qemu_chr_add_handlers(CharDriverState *s,
7b27a769 351 IOCanReadHandler *fd_can_read,
6f97dba0
AL		 352 IOReadHandler *fd_read,
353 IOEventHandler *fd_event,
354 void *opaque)
355{
19083228
HG		 356 int fe_open;
357
da7d998b 358 if (!opaque && !fd_can_read && !fd_read && !fd_event) {
19083228 359 fe_open = 0;
386a5a1e 360 remove_fd_in_watch(s);
19083228
HG		 361 } else {
362 fe_open = 1;
2d6c1ef4 363 }
6f97dba0
AL		 364 s->chr_can_read = fd_can_read;
365 s->chr_read = fd_read;
366 s->chr_event = fd_event;
367 s->handler_opaque = opaque;
ac1b84dd 368 if (fe_open && s->chr_update_read_handler)
6f97dba0 369 s->chr_update_read_handler(s);
73cdf3f2 370
19083228 371 if (!s->explicit_fe_open) {
8e25daa8 372 qemu_chr_fe_set_open(s, fe_open);
19083228
HG		 373 }
374
73cdf3f2
AG		 375 /* We're connecting to an already opened device, so let's make sure we
376 also get the open event */
a59bcd31 377 if (fe_open && s->be_open) {
fee204fd 378 qemu_chr_be_generic_open(s);
73cdf3f2 379 }
6f97dba0
AL		 380}
381
382static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
383{
384 return len;
385}
386
80dca9e6 387static CharDriverState *qemu_chr_open_null(void)
6f97dba0
AL		 388{
389 CharDriverState *chr;
390
db39fcf1 391 chr = qemu_chr_alloc();
6f97dba0 392 chr->chr_write = null_chr_write;
bd5c51ee 393 chr->explicit_be_open = true;
1f51470d 394 return chr;
6f97dba0
AL		 395}
396
397/* MUX driver for serial I/O splitting */
6f97dba0
AL		 398#define MAX_MUX 4
399#define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
400#define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
401typedef struct {
7b27a769 402 IOCanReadHandler *chr_can_read[MAX_MUX];
6f97dba0
AL		 403 IOReadHandler *chr_read[MAX_MUX];
404 IOEventHandler *chr_event[MAX_MUX];
405 void *ext_opaque[MAX_MUX];
406 CharDriverState *drv;
799f1f23 407 int focus;
6f97dba0
AL		 408 int mux_cnt;
409 int term_got_escape;
410 int max_size;
a80bf99f
AL		 411 /* Intermediate input buffer allows to catch escape sequences even if the
412 currently active device is not accepting any input - but only until it
413 is full as well. */
414 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
415 int prod[MAX_MUX];
416 int cons[MAX_MUX];
2d22959d 417 int timestamps;
9005b2a7
PB		 418
419 /* Protected by the CharDriverState chr_write_lock. */
4ab312f7 420 int linestart;
2d22959d 421 int64_t timestamps_start;
6f97dba0
AL		 422} MuxDriver;
423
424
9005b2a7 425/* Called with chr_write_lock held. */
6f97dba0
AL		 426static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
427{
428 MuxDriver *d = chr->opaque;
429 int ret;
2d22959d 430 if (!d->timestamps) {
6975b713 431 ret = qemu_chr_fe_write(d->drv, buf, len);
6f97dba0
AL		 432 } else {
433 int i;
434
435 ret = 0;
4ab312f7
JK		 436 for (i = 0; i < len; i++) {
437 if (d->linestart) {
6f97dba0
AL		 438 char buf1[64];
439 int64_t ti;
440 int secs;
441
bc72ad67 442 ti = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
2d22959d
JK		 443 if (d->timestamps_start == -1)
444 d->timestamps_start = ti;
445 ti -= d->timestamps_start;
a4bb1db8 446 secs = ti / 1000;
6f97dba0
AL		 447 snprintf(buf1, sizeof(buf1),
448 "[%02d:%02d:%02d.%03d] ",
449 secs / 3600,
450 (secs / 60) % 60,
451 secs % 60,
a4bb1db8 452 (int)(ti % 1000));
6975b713 453 qemu_chr_fe_write(d->drv, (uint8_t *)buf1, strlen(buf1));
4ab312f7
JK		 454 d->linestart = 0;
455 }
6975b713 456 ret += qemu_chr_fe_write(d->drv, buf+i, 1);
4ab312f7
JK		 457 if (buf[i] == '\n') {
458 d->linestart = 1;
6f97dba0
AL		 459 }
460 }
461 }
462 return ret;
463}
464
465static const char * const mux_help[] = {
466 "% h print this help\n\r",
467 "% x exit emulator\n\r",
468 "% s save disk data back to file (if -snapshot)\n\r",
86d10328 469 "% t toggle console timestamps\n\r",
6f97dba0
AL		 470 "% b send break (magic sysrq)\n\r",
471 "% c switch between console and monitor\n\r",
472 "% % sends %\n\r",
473 NULL
474};
475
476int term_escape_char = 0x01; /* ctrl-a is used for escape */
477static void mux_print_help(CharDriverState *chr)
478{
479 int i, j;
480 char ebuf[15] = "Escape-Char";
481 char cbuf[50] = "\n\r";
482
483 if (term_escape_char > 0 && term_escape_char < 26) {
484 snprintf(cbuf, sizeof(cbuf), "\n\r");
485 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
486 } else {
487 snprintf(cbuf, sizeof(cbuf),
488 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
489 term_escape_char);
490 }
6975b713 491 qemu_chr_fe_write(chr, (uint8_t *)cbuf, strlen(cbuf));
6f97dba0
AL		 492 for (i = 0; mux_help[i] != NULL; i++) {
493 for (j=0; mux_help[i][j] != '\0'; j++) {
494 if (mux_help[i][j] == '%')
6975b713 495 qemu_chr_fe_write(chr, (uint8_t *)ebuf, strlen(ebuf));
6f97dba0 496 else
6975b713 497 qemu_chr_fe_write(chr, (uint8_t *)&mux_help[i][j], 1);
6f97dba0
AL		 498 }
499 }
500}
501
2724b180
AL		 502static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
503{
504 if (d->chr_event[mux_nr])
505 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
506}
507
6f97dba0
AL		 508static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
509{
510 if (d->term_got_escape) {
511 d->term_got_escape = 0;
512 if (ch == term_escape_char)
513 goto send_char;
514 switch(ch) {
515 case '?':
516 case 'h':
517 mux_print_help(chr);
518 break;
519 case 'x':
520 {
521 const char *term = "QEMU: Terminated\n\r";
6975b713 522 qemu_chr_fe_write(chr, (uint8_t *)term, strlen(term));
6f97dba0
AL		 523 exit(0);
524 break;
525 }
526 case 's':
6ab4b5ab 527 bdrv_commit_all();
6f97dba0
AL		 528 break;
529 case 'b':
a425d23f 530 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
6f97dba0
AL		 531 break;
532 case 'c':
533 /* Switch to the next registered device */
799f1f23
GH		 534 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
535 d->focus++;
536 if (d->focus >= d->mux_cnt)
537 d->focus = 0;
538 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
6f97dba0 539 break;
2d22959d
JK		 540 case 't':
541 d->timestamps = !d->timestamps;
542 d->timestamps_start = -1;
4ab312f7 543 d->linestart = 0;
2d22959d 544 break;
6f97dba0
AL		 545 }
546 } else if (ch == term_escape_char) {
547 d->term_got_escape = 1;
548 } else {
549 send_char:
550 return 1;
551 }
552 return 0;
553}
554
555static void mux_chr_accept_input(CharDriverState *chr)
556{
6f97dba0 557 MuxDriver *d = chr->opaque;
799f1f23 558 int m = d->focus;
6f97dba0 559
a80bf99f 560 while (d->prod[m] != d->cons[m] &&
6f97dba0
AL		 561 d->chr_can_read[m] &&
562 d->chr_can_read[m](d->ext_opaque[m])) {
563 d->chr_read[m](d->ext_opaque[m],
a80bf99f 564 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
6f97dba0
AL		 565 }
566}
567
568static int mux_chr_can_read(void *opaque)
569{
570 CharDriverState *chr = opaque;
571 MuxDriver *d = chr->opaque;
799f1f23 572 int m = d->focus;
6f97dba0 573
a80bf99f 574 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
6f97dba0 575 return 1;
a80bf99f
AL		 576 if (d->chr_can_read[m])
577 return d->chr_can_read[m](d->ext_opaque[m]);
6f97dba0
AL		 578 return 0;
579}
580
581static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
582{
583 CharDriverState *chr = opaque;
584 MuxDriver *d = chr->opaque;
799f1f23 585 int m = d->focus;
6f97dba0
AL		 586 int i;
587
588 mux_chr_accept_input (opaque);
589
590 for(i = 0; i < size; i++)
591 if (mux_proc_byte(chr, d, buf[i])) {
a80bf99f 592 if (d->prod[m] == d->cons[m] &&
6f97dba0
AL		 593 d->chr_can_read[m] &&
594 d->chr_can_read[m](d->ext_opaque[m]))
595 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
596 else
a80bf99f 597 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
6f97dba0
AL		 598 }
599}
600
601static void mux_chr_event(void *opaque, int event)
602{
603 CharDriverState *chr = opaque;
604 MuxDriver *d = chr->opaque;
605 int i;
606
607 /* Send the event to all registered listeners */
608 for (i = 0; i < d->mux_cnt; i++)
2724b180 609 mux_chr_send_event(d, i, event);
6f97dba0
AL		 610}
611
612static void mux_chr_update_read_handler(CharDriverState *chr)
613{
614 MuxDriver *d = chr->opaque;
615
616 if (d->mux_cnt >= MAX_MUX) {
617 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
618 return;
619 }
620 d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
621 d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
622 d->chr_read[d->mux_cnt] = chr->chr_read;
623 d->chr_event[d->mux_cnt] = chr->chr_event;
624 /* Fix up the real driver with mux routines */
625 if (d->mux_cnt == 0) {
626 qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
627 mux_chr_event, chr);
628 }
799f1f23
GH		 629 if (d->focus != -1) {
630 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
a7aec5da 631 }
799f1f23 632 d->focus = d->mux_cnt;
6f97dba0 633 d->mux_cnt++;
799f1f23 634 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
6f97dba0
AL		 635}
636
7b7ab18d
MR		 637static bool muxes_realized;
638
639/**
640 * Called after processing of default and command-line-specified
641 * chardevs to deliver CHR_EVENT_OPENED events to any FEs attached
642 * to a mux chardev. This is done here to ensure that
643 * output/prompts/banners are only displayed for the FE that has
644 * focus when initial command-line processing/machine init is
645 * completed.
646 *
647 * After this point, any new FE attached to any new or existing
648 * mux will receive CHR_EVENT_OPENED notifications for the BE
649 * immediately.
650 */
651static void muxes_realize_done(Notifier *notifier, void *unused)
652{
653 CharDriverState *chr;
654
655 QTAILQ_FOREACH(chr, &chardevs, next) {
656 if (chr->is_mux) {
657 MuxDriver *d = chr->opaque;
658 int i;
659
660 /* send OPENED to all already-attached FEs */
661 for (i = 0; i < d->mux_cnt; i++) {
662 mux_chr_send_event(d, i, CHR_EVENT_OPENED);
663 }
664 /* mark mux as OPENED so any new FEs will immediately receive
665 * OPENED event
666 */
667 qemu_chr_be_generic_open(chr);
668 }
669 }
670 muxes_realized = true;
671}
672
673static Notifier muxes_realize_notify = {
674 .notify = muxes_realize_done,
675};
676
3f0838ab
KB		 677static GSource *mux_chr_add_watch(CharDriverState *s, GIOCondition cond)
678{
679 MuxDriver *d = s->opaque;
680 return d->drv->chr_add_watch(d->drv, cond);
681}
682
6f97dba0
AL		 683static CharDriverState *qemu_chr_open_mux(CharDriverState *drv)
684{
685 CharDriverState *chr;
686 MuxDriver *d;
687
db39fcf1 688 chr = qemu_chr_alloc();
7267c094 689 d = g_malloc0(sizeof(MuxDriver));
6f97dba0
AL		 690
691 chr->opaque = d;
692 d->drv = drv;
799f1f23 693 d->focus = -1;
6f97dba0
AL		 694 chr->chr_write = mux_chr_write;
695 chr->chr_update_read_handler = mux_chr_update_read_handler;
696 chr->chr_accept_input = mux_chr_accept_input;
7c32c4fe 697 /* Frontend guest-open / -close notification is not support with muxes */
574b711a 698 chr->chr_set_fe_open = NULL;
3f0838ab
KB		 699 if (drv->chr_add_watch) {
700 chr->chr_add_watch = mux_chr_add_watch;
701 }
7b7ab18d
MR		 702 /* only default to opened state if we've realized the initial
703 * set of muxes
704 */
705 chr->explicit_be_open = muxes_realized ? 0 : 1;
706 chr->is_mux = 1;
73cdf3f2 707
6f97dba0
AL		 708 return chr;
709}
710
711
712#ifdef _WIN32
d247d25f 713int send_all(int fd, const void *buf, int len1)
6f97dba0
AL		 714{
715 int ret, len;
716
717 len = len1;
718 while (len > 0) {
719 ret = send(fd, buf, len, 0);
720 if (ret < 0) {
6f97dba0
AL		 721 errno = WSAGetLastError();
722 if (errno != WSAEWOULDBLOCK) {
723 return -1;
724 }
725 } else if (ret == 0) {
726 break;
727 } else {
728 buf += ret;
729 len -= ret;
730 }
731 }
732 return len1 - len;
733}
734
735#else
736
5fc9cfed 737int send_all(int fd, const void *_buf, int len1)
6f97dba0
AL		 738{
739 int ret, len;
5fc9cfed 740 const uint8_t *buf = _buf;
6f97dba0
AL		 741
742 len = len1;
743 while (len > 0) {
744 ret = write(fd, buf, len);
745 if (ret < 0) {
746 if (errno != EINTR && errno != EAGAIN)
747 return -1;
748 } else if (ret == 0) {
749 break;
750 } else {
751 buf += ret;
752 len -= ret;
753 }
754 }
755 return len1 - len;
756}
4549a8b7
SB		 757
758int recv_all(int fd, void *_buf, int len1, bool single_read)
759{
760 int ret, len;
761 uint8_t *buf = _buf;
762
763 len = len1;
764 while ((len > 0) && (ret = read(fd, buf, len)) != 0) {
765 if (ret < 0) {
766 if (errno != EINTR && errno != EAGAIN) {
767 return -1;
768 }
769 continue;
770 } else {
771 if (single_read) {
772 return ret;
773 }
774 buf += ret;
775 len -= ret;
776 }
777 }
778 return len1 - len;
779}
780
6f97dba0
AL		 781#endif /* !_WIN32 */
782
96c63847
AL		 783typedef struct IOWatchPoll
784{
d185c094
PB		 785 GSource parent;
786
1e885b25 787 GIOChannel *channel;
96c63847 788 GSource *src;
96c63847
AL		 789
790 IOCanReadHandler *fd_can_read;
1e885b25 791 GSourceFunc fd_read;
96c63847 792 void *opaque;
96c63847
AL		 793} IOWatchPoll;
794
96c63847
AL		 795static IOWatchPoll *io_watch_poll_from_source(GSource *source)
796{
d185c094 797 return container_of(source, IOWatchPoll, parent);
96c63847
AL		 798}
799
800static gboolean io_watch_poll_prepare(GSource *source, gint *timeout_)
801{
802 IOWatchPoll *iwp = io_watch_poll_from_source(source);
d185c094 803 bool now_active = iwp->fd_can_read(iwp->opaque) > 0;
1e885b25 804 bool was_active = iwp->src != NULL;
d185c094 805 if (was_active == now_active) {
96c63847
AL		 806 return FALSE;
807 }
808
d185c094 809 if (now_active) {
4bf1cb03
NC		 810 iwp->src = g_io_create_watch(iwp->channel,
811 G_IO_IN | G_IO_ERR | G_IO_HUP | G_IO_NVAL);
1e885b25 812 g_source_set_callback(iwp->src, iwp->fd_read, iwp->opaque, NULL);
d185c094
PB		 813 g_source_attach(iwp->src, NULL);
814 } else {
1e885b25
PB		 815 g_source_destroy(iwp->src);
816 g_source_unref(iwp->src);
817 iwp->src = NULL;
d185c094
PB		 818 }
819 return FALSE;
96c63847
AL		 820}
821
822static gboolean io_watch_poll_check(GSource *source)
823{
d185c094 824 return FALSE;
96c63847
AL		 825}
826
827static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
828 gpointer user_data)
829{
d185c094 830 abort();
96c63847
AL		 831}
832
833static void io_watch_poll_finalize(GSource *source)
834{
2b316774
PB		 835 /* Due to a glib bug, removing the last reference to a source
836 * inside a finalize callback causes recursive locking (and a
837 * deadlock). This is not a problem inside other callbacks,
838 * including dispatch callbacks, so we call io_remove_watch_poll
839 * to remove this source. At this point, iwp->src must
840 * be NULL, or we would leak it.
841 *
842 * This would be solved much more elegantly by child sources,
843 * but we support older glib versions that do not have them.
844 */
96c63847 845 IOWatchPoll *iwp = io_watch_poll_from_source(source);
2b316774 846 assert(iwp->src == NULL);
96c63847
AL		 847}
848
849static GSourceFuncs io_watch_poll_funcs = {
850 .prepare = io_watch_poll_prepare,
851 .check = io_watch_poll_check,
852 .dispatch = io_watch_poll_dispatch,
853 .finalize = io_watch_poll_finalize,
854};
855
856/* Can only be used for read */
857static guint io_add_watch_poll(GIOChannel *channel,
858 IOCanReadHandler *fd_can_read,
859 GIOFunc fd_read,
860 gpointer user_data)
861{
862 IOWatchPoll *iwp;
0ca5aa4f 863 int tag;
96c63847 864
d185c094 865 iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs, sizeof(IOWatchPoll));
96c63847
AL		 866 iwp->fd_can_read = fd_can_read;
867 iwp->opaque = user_data;
1e885b25
PB		 868 iwp->channel = channel;
869 iwp->fd_read = (GSourceFunc) fd_read;
870 iwp->src = NULL;
96c63847 871
0ca5aa4f
PB		 872 tag = g_source_attach(&iwp->parent, NULL);
873 g_source_unref(&iwp->parent);
874 return tag;
96c63847
AL		 875}
876
2b316774
PB		 877static void io_remove_watch_poll(guint tag)
878{
879 GSource *source;
880 IOWatchPoll *iwp;
881
882 g_return_if_fail (tag > 0);
883
884 source = g_main_context_find_source_by_id(NULL, tag);
885 g_return_if_fail (source != NULL);
886
887 iwp = io_watch_poll_from_source(source);
888 if (iwp->src) {
889 g_source_destroy(iwp->src);
890 g_source_unref(iwp->src);
891 iwp->src = NULL;
892 }
893 g_source_destroy(&iwp->parent);
894}
895
26da70c7
AS		 896static void remove_fd_in_watch(CharDriverState *chr)
897{
898 if (chr->fd_in_tag) {
899 io_remove_watch_poll(chr->fd_in_tag);
900 chr->fd_in_tag = 0;
901 }
902}
903
44ab9ed4 904#ifndef _WIN32
96c63847
AL		 905static GIOChannel *io_channel_from_fd(int fd)
906{
907 GIOChannel *chan;
908
909 if (fd == -1) {
910 return NULL;
911 }
912
913 chan = g_io_channel_unix_new(fd);
914
915 g_io_channel_set_encoding(chan, NULL, NULL);
916 g_io_channel_set_buffered(chan, FALSE);
917
918 return chan;
919}
44ab9ed4 920#endif
96c63847 921
76a9644b
AL		 922static GIOChannel *io_channel_from_socket(int fd)
923{
924 GIOChannel *chan;
925
926 if (fd == -1) {
927 return NULL;
928 }
929
930#ifdef _WIN32
931 chan = g_io_channel_win32_new_socket(fd);
932#else
933 chan = g_io_channel_unix_new(fd);
934#endif
935
936 g_io_channel_set_encoding(chan, NULL, NULL);
937 g_io_channel_set_buffered(chan, FALSE);
938
939 return chan;
940}
941
684a096e 942static int io_channel_send(GIOChannel *fd, const void *buf, size_t len)
96c63847 943{
ac8c26f6
LE		 944 size_t offset = 0;
945 GIOStatus status = G_IO_STATUS_NORMAL;
96c63847 946
ac8c26f6
LE		 947 while (offset < len && status == G_IO_STATUS_NORMAL) {
948 gsize bytes_written = 0;
684a096e
AL		 949
950 status = g_io_channel_write_chars(fd, buf + offset, len - offset,
96c63847 951 &bytes_written, NULL);
684a096e 952 offset += bytes_written;
96c63847 953 }
684a096e 954
ac8c26f6
LE		 955 if (offset > 0) {
956 return offset;
957 }
958 switch (status) {
959 case G_IO_STATUS_NORMAL:
960 g_assert(len == 0);
961 return 0;
962 case G_IO_STATUS_AGAIN:
963 errno = EAGAIN;
964 return -1;
965 default:
966 break;
967 }
968 errno = EINVAL;
969 return -1;
96c63847 970}
96c63847 971
44ab9ed4
BS		 972#ifndef _WIN32
973
a29753f8
AL		 974typedef struct FDCharDriver {
975 CharDriverState *chr;
976 GIOChannel *fd_in, *fd_out;
6f97dba0
AL		 977 int max_size;
978} FDCharDriver;
979
9005b2a7 980/* Called with chr_write_lock held. */
6f97dba0
AL		 981static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
982{
983 FDCharDriver *s = chr->opaque;
a29753f8 984
684a096e 985 return io_channel_send(s->fd_out, buf, len);
6f97dba0
AL		 986}
987
a29753f8 988static gboolean fd_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 989{
990 CharDriverState *chr = opaque;
991 FDCharDriver *s = chr->opaque;
a29753f8 992 int len;
9bd7854e 993 uint8_t buf[READ_BUF_LEN];
a29753f8
AL		 994 GIOStatus status;
995 gsize bytes_read;
6f97dba0
AL		 996
997 len = sizeof(buf);
a29753f8 998 if (len > s->max_size) {
6f97dba0 999 len = s->max_size;
a29753f8
AL		 1000 }
1001 if (len == 0) {
cdbf6e16 1002 return TRUE;
a29753f8
AL		 1003 }
1004
1005 status = g_io_channel_read_chars(chan, (gchar *)buf,
1006 len, &bytes_read, NULL);
1007 if (status == G_IO_STATUS_EOF) {
26da70c7 1008 remove_fd_in_watch(chr);
a425d23f 1009 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
a29753f8 1010 return FALSE;
6f97dba0 1011 }
a29753f8
AL		 1012 if (status == G_IO_STATUS_NORMAL) {
1013 qemu_chr_be_write(chr, buf, bytes_read);
6f97dba0 1014 }
a29753f8
AL		 1015
1016 return TRUE;
1017}
1018
1019static int fd_chr_read_poll(void *opaque)
1020{
1021 CharDriverState *chr = opaque;
1022 FDCharDriver *s = chr->opaque;
1023
1024 s->max_size = qemu_chr_be_can_write(chr);
1025 return s->max_size;
6f97dba0
AL		 1026}
1027
23673ca7
AL		 1028static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1029{
1030 FDCharDriver *s = chr->opaque;
1031 return g_io_create_watch(s->fd_out, cond);
1032}
1033
6f97dba0
AL		 1034static void fd_chr_update_read_handler(CharDriverState *chr)
1035{
1036 FDCharDriver *s = chr->opaque;
1037
26da70c7 1038 remove_fd_in_watch(chr);
a29753f8 1039 if (s->fd_in) {
7ba9addc
AS		 1040 chr->fd_in_tag = io_add_watch_poll(s->fd_in, fd_chr_read_poll,
1041 fd_chr_read, chr);
6f97dba0
AL		 1042 }
1043}
1044
1045static void fd_chr_close(struct CharDriverState *chr)
1046{
1047 FDCharDriver *s = chr->opaque;
1048
26da70c7 1049 remove_fd_in_watch(chr);
a29753f8
AL		 1050 if (s->fd_in) {
1051 g_io_channel_unref(s->fd_in);
1052 }
1053 if (s->fd_out) {
1054 g_io_channel_unref(s->fd_out);
6f97dba0
AL		 1055 }
1056
7267c094 1057 g_free(s);
a425d23f 1058 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1059}
1060
1061/* open a character device to a unix fd */
1062static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
1063{
1064 CharDriverState *chr;
1065 FDCharDriver *s;
1066
db39fcf1 1067 chr = qemu_chr_alloc();
7267c094 1068 s = g_malloc0(sizeof(FDCharDriver));
a29753f8
AL		 1069 s->fd_in = io_channel_from_fd(fd_in);
1070 s->fd_out = io_channel_from_fd(fd_out);
4ff12bdb 1071 qemu_set_nonblock(fd_out);
a29753f8 1072 s->chr = chr;
6f97dba0 1073 chr->opaque = s;
23673ca7 1074 chr->chr_add_watch = fd_chr_add_watch;
6f97dba0
AL		 1075 chr->chr_write = fd_chr_write;
1076 chr->chr_update_read_handler = fd_chr_update_read_handler;
1077 chr->chr_close = fd_chr_close;
1078
6f97dba0
AL		 1079 return chr;
1080}
1081
548cbb36 1082static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
6f97dba0
AL		 1083{
1084 int fd_in, fd_out;
9f781168
CM		 1085 char filename_in[CHR_MAX_FILENAME_SIZE];
1086 char filename_out[CHR_MAX_FILENAME_SIZE];
548cbb36 1087 const char *filename = opts->device;
7d31544f
GH		 1088
1089 if (filename == NULL) {
1090 fprintf(stderr, "chardev: pipe: no filename given\n");
1f51470d 1091 return NULL;
7d31544f 1092 }
6f97dba0 1093
9f781168
CM		 1094 snprintf(filename_in, CHR_MAX_FILENAME_SIZE, "%s.in", filename);
1095 snprintf(filename_out, CHR_MAX_FILENAME_SIZE, "%s.out", filename);
40ff6d7e
KW		 1096 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
1097 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
6f97dba0
AL		 1098 if (fd_in < 0 || fd_out < 0) {
1099 if (fd_in >= 0)
1100 close(fd_in);
1101 if (fd_out >= 0)
1102 close(fd_out);
b181e047 1103 TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
a89dd6c3 1104 if (fd_in < 0) {
1f51470d 1105 return NULL;
a89dd6c3 1106 }
6f97dba0 1107 }
1f51470d 1108 return qemu_chr_open_fd(fd_in, fd_out);
6f97dba0
AL		 1109}
1110
6f97dba0
AL		 1111/* init terminal so that we can grab keys */
1112static struct termios oldtty;
1113static int old_fd0_flags;
c88930a6 1114static bool stdio_in_use;
bb002513 1115static bool stdio_allow_signal;
e76d4420
GH		 1116static bool stdio_echo_state;
1117
1118static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo);
6f97dba0
AL		 1119
1120static void term_exit(void)
1121{
1122 tcsetattr (0, TCSANOW, &oldtty);
1123 fcntl(0, F_SETFL, old_fd0_flags);
1124}
1125
e76d4420
GH		 1126static void term_stdio_handler(int sig)
1127{
1128 /* restore echo after resume from suspend. */
1129 qemu_chr_set_echo_stdio(NULL, stdio_echo_state);
1130}
1131
bb002513 1132static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
6f97dba0
AL		 1133{
1134 struct termios tty;
1135
e76d4420 1136 stdio_echo_state = echo;
0369364b 1137 tty = oldtty;
bb002513
PB		 1138 if (!echo) {
1139 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
6f97dba0 1140 |INLCR|IGNCR|ICRNL|IXON);
bb002513
PB		 1141 tty.c_oflag |= OPOST;
1142 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
1143 tty.c_cflag &= ~(CSIZE|PARENB);
1144 tty.c_cflag |= CS8;
1145 tty.c_cc[VMIN] = 1;
1146 tty.c_cc[VTIME] = 0;
1147 }
bb002513 1148 if (!stdio_allow_signal)
6f97dba0 1149 tty.c_lflag &= ~ISIG;
6f97dba0
AL		 1150
1151 tcsetattr (0, TCSANOW, &tty);
6f97dba0
AL		 1152}
1153
1154static void qemu_chr_close_stdio(struct CharDriverState *chr)
1155{
1156 term_exit();
6f97dba0
AL		 1157 fd_chr_close(chr);
1158}
1159
7c358031 1160static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
6f97dba0
AL		 1161{
1162 CharDriverState *chr;
e76d4420 1163 struct sigaction act;
6f97dba0 1164
ab51b1d5
MT		 1165 if (is_daemonized()) {
1166 error_report("cannot use stdio with -daemonize");
1167 return NULL;
1168 }
c88930a6
LL		 1169
1170 if (stdio_in_use) {
1171 error_report("cannot use stdio by multiple character devices");
1172 exit(1);
1173 }
1174
1175 stdio_in_use = true;
ed7a1540 1176 old_fd0_flags = fcntl(0, F_GETFL);
c88930a6 1177 tcgetattr(0, &oldtty);
4ff12bdb 1178 qemu_set_nonblock(0);
ed7a1540 1179 atexit(term_exit);
0369364b 1180
e76d4420
GH		 1181 memset(&act, 0, sizeof(act));
1182 act.sa_handler = term_stdio_handler;
1183 sigaction(SIGCONT, &act, NULL);
1184
6f97dba0
AL		 1185 chr = qemu_chr_open_fd(0, 1);
1186 chr->chr_close = qemu_chr_close_stdio;
bb002513 1187 chr->chr_set_echo = qemu_chr_set_echo_stdio;
7c358031
GH		 1188 if (opts->has_signal) {
1189 stdio_allow_signal = opts->signal;
1190 }
15f31519 1191 qemu_chr_fe_set_echo(chr, false);
6f97dba0 1192
1f51470d 1193 return chr;
6f97dba0
AL		 1194}
1195
6f97dba0 1196#if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
a167ba50
AJ		 1197 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
1198 || defined(__GLIBC__)
6f97dba0 1199
e551498e
GH		 1200#define HAVE_CHARDEV_TTY 1
1201
6f97dba0 1202typedef struct {
093d3a20 1203 GIOChannel *fd;
6f97dba0 1204 int read_bytes;
9005b2a7
PB		 1205
1206 /* Protected by the CharDriverState chr_write_lock. */
1207 int connected;
8aa33caf 1208 guint timer_tag;
7b3621f4 1209 guint open_tag;
6f97dba0
AL		 1210} PtyCharDriver;
1211
9005b2a7 1212static void pty_chr_update_read_handler_locked(CharDriverState *chr);
6f97dba0
AL		 1213static void pty_chr_state(CharDriverState *chr, int connected);
1214
8aa33caf
AL		 1215static gboolean pty_chr_timer(gpointer opaque)
1216{
1217 struct CharDriverState *chr = opaque;
1218 PtyCharDriver *s = chr->opaque;
1219
9005b2a7 1220 qemu_mutex_lock(&chr->chr_write_lock);
79f20075 1221 s->timer_tag = 0;
7b3621f4 1222 s->open_tag = 0;
b0d768c3
GH		 1223 if (!s->connected) {
1224 /* Next poll ... */
9005b2a7 1225 pty_chr_update_read_handler_locked(chr);
b0d768c3 1226 }
9005b2a7 1227 qemu_mutex_unlock(&chr->chr_write_lock);
8aa33caf
AL		 1228 return FALSE;
1229}
1230
9005b2a7 1231/* Called with chr_write_lock held. */
8aa33caf
AL		 1232static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
1233{
1234 PtyCharDriver *s = chr->opaque;
1235
1236 if (s->timer_tag) {
1237 g_source_remove(s->timer_tag);
1238 s->timer_tag = 0;
1239 }
1240
1241 if (ms == 1000) {
1242 s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
1243 } else {
1244 s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
1245 }
1246}
1247
9005b2a7
PB		 1248/* Called with chr_write_lock held. */
1249static void pty_chr_update_read_handler_locked(CharDriverState *chr)
1bb7fe72
PB		 1250{
1251 PtyCharDriver *s = chr->opaque;
1252 GPollFD pfd;
1253
1254 pfd.fd = g_io_channel_unix_get_fd(s->fd);
1255 pfd.events = G_IO_OUT;
1256 pfd.revents = 0;
1257 g_poll(&pfd, 1, 0);
1258 if (pfd.revents & G_IO_HUP) {
1259 pty_chr_state(chr, 0);
1260 } else {
1261 pty_chr_state(chr, 1);
1262 }
1263}
1264
9005b2a7
PB		 1265static void pty_chr_update_read_handler(CharDriverState *chr)
1266{
1267 qemu_mutex_lock(&chr->chr_write_lock);
1268 pty_chr_update_read_handler_locked(chr);
1269 qemu_mutex_unlock(&chr->chr_write_lock);
1270}
1271
1272/* Called with chr_write_lock held. */
6f97dba0
AL		 1273static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1274{
1275 PtyCharDriver *s = chr->opaque;
1276
1277 if (!s->connected) {
1278 /* guest sends data, check for (re-)connect */
9005b2a7 1279 pty_chr_update_read_handler_locked(chr);
cf7330c7
ST		 1280 if (!s->connected) {
1281 return 0;
1282 }
6f97dba0 1283 }
684a096e 1284 return io_channel_send(s->fd, buf, len);
6f97dba0
AL		 1285}
1286
e6a87ed8
AL		 1287static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1288{
1289 PtyCharDriver *s = chr->opaque;
62c339c5
PB		 1290 if (!s->connected) {
1291 return NULL;
1292 }
e6a87ed8
AL		 1293 return g_io_create_watch(s->fd, cond);
1294}
1295
6f97dba0
AL		 1296static int pty_chr_read_poll(void *opaque)
1297{
1298 CharDriverState *chr = opaque;
1299 PtyCharDriver *s = chr->opaque;
1300
909cda12 1301 s->read_bytes = qemu_chr_be_can_write(chr);
6f97dba0
AL		 1302 return s->read_bytes;
1303}
1304
093d3a20 1305static gboolean pty_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 1306{
1307 CharDriverState *chr = opaque;
1308 PtyCharDriver *s = chr->opaque;
093d3a20 1309 gsize size, len;
9bd7854e 1310 uint8_t buf[READ_BUF_LEN];
093d3a20 1311 GIOStatus status;
6f97dba0
AL		 1312
1313 len = sizeof(buf);
1314 if (len > s->read_bytes)
1315 len = s->read_bytes;
cdbf6e16
PB		 1316 if (len == 0) {
1317 return TRUE;
1318 }
093d3a20
AL		 1319 status = g_io_channel_read_chars(s->fd, (gchar *)buf, len, &size, NULL);
1320 if (status != G_IO_STATUS_NORMAL) {
6f97dba0 1321 pty_chr_state(chr, 0);
093d3a20
AL		 1322 return FALSE;
1323 } else {
6f97dba0 1324 pty_chr_state(chr, 1);
fa5efccb 1325 qemu_chr_be_write(chr, buf, size);
6f97dba0 1326 }
093d3a20 1327 return TRUE;
6f97dba0
AL		 1328}
1329
7b3621f4
PB		 1330static gboolean qemu_chr_be_generic_open_func(gpointer opaque)
1331{
1332 CharDriverState *chr = opaque;
1333 PtyCharDriver *s = chr->opaque;
1334
1335 s->open_tag = 0;
1336 qemu_chr_be_generic_open(chr);
1337 return FALSE;
1338}
1339
9005b2a7 1340/* Called with chr_write_lock held. */
6f97dba0
AL		 1341static void pty_chr_state(CharDriverState *chr, int connected)
1342{
1343 PtyCharDriver *s = chr->opaque;
1344
1345 if (!connected) {
7b3621f4
PB		 1346 if (s->open_tag) {
1347 g_source_remove(s->open_tag);
1348 s->open_tag = 0;
1349 }
26da70c7 1350 remove_fd_in_watch(chr);
6f97dba0 1351 s->connected = 0;
6f97dba0
AL		 1352 /* (re-)connect poll interval for idle guests: once per second.
1353 * We check more frequently in case the guests sends data to
1354 * the virtual device linked to our pty. */
8aa33caf 1355 pty_chr_rearm_timer(chr, 1000);
6f97dba0 1356 } else {
85a67692
PB		 1357 if (s->timer_tag) {
1358 g_source_remove(s->timer_tag);
1359 s->timer_tag = 0;
1360 }
1361 if (!s->connected) {
7b3621f4 1362 g_assert(s->open_tag == 0);
85a67692 1363 s->connected = 1;
7b3621f4 1364 s->open_tag = g_idle_add(qemu_chr_be_generic_open_func, chr);
ac1b84dd
GH		 1365 }
1366 if (!chr->fd_in_tag) {
7ba9addc
AS		 1367 chr->fd_in_tag = io_add_watch_poll(s->fd, pty_chr_read_poll,
1368 pty_chr_read, chr);
85a67692 1369 }
6f97dba0
AL		 1370 }
1371}
1372
6f97dba0
AL		 1373static void pty_chr_close(struct CharDriverState *chr)
1374{
1375 PtyCharDriver *s = chr->opaque;
093d3a20 1376 int fd;
6f97dba0 1377
7b3621f4
PB		 1378 qemu_mutex_lock(&chr->chr_write_lock);
1379 pty_chr_state(chr, 0);
093d3a20
AL		 1380 fd = g_io_channel_unix_get_fd(s->fd);
1381 g_io_channel_unref(s->fd);
1382 close(fd);
8aa33caf
AL		 1383 if (s->timer_tag) {
1384 g_source_remove(s->timer_tag);
910b6368 1385 s->timer_tag = 0;
8aa33caf 1386 }
7b3621f4 1387 qemu_mutex_unlock(&chr->chr_write_lock);
7267c094 1388 g_free(s);
a425d23f 1389 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1390}
1391
e68c5958
GH		 1392static CharDriverState *qemu_chr_open_pty(const char *id,
1393 ChardevReturn *ret)
6f97dba0
AL		 1394{
1395 CharDriverState *chr;
1396 PtyCharDriver *s;
e68c5958 1397 int master_fd, slave_fd;
6f97dba0 1398 char pty_name[PATH_MAX];
6f97dba0 1399
4efeabbb
MT		 1400 master_fd = qemu_openpty_raw(&slave_fd, pty_name);
1401 if (master_fd < 0) {
1f51470d 1402 return NULL;
6f97dba0
AL		 1403 }
1404
6f97dba0 1405 close(slave_fd);
fac6688a 1406 qemu_set_nonblock(master_fd);
6f97dba0 1407
db39fcf1 1408 chr = qemu_chr_alloc();
a4e26048 1409
4efeabbb
MT		 1410 chr->filename = g_strdup_printf("pty:%s", pty_name);
1411 ret->pty = g_strdup(pty_name);
e68c5958 1412 ret->has_pty = true;
58650218 1413
e68c5958 1414 fprintf(stderr, "char device redirected to %s (label %s)\n",
4efeabbb 1415 pty_name, id);
6f97dba0 1416
a4e26048 1417 s = g_malloc0(sizeof(PtyCharDriver));
6f97dba0
AL		 1418 chr->opaque = s;
1419 chr->chr_write = pty_chr_write;
1420 chr->chr_update_read_handler = pty_chr_update_read_handler;
1421 chr->chr_close = pty_chr_close;
e6a87ed8 1422 chr->chr_add_watch = pty_chr_add_watch;
bd5c51ee 1423 chr->explicit_be_open = true;
6f97dba0 1424
093d3a20 1425 s->fd = io_channel_from_fd(master_fd);
8aa33caf 1426 s->timer_tag = 0;
6f97dba0 1427
1f51470d 1428 return chr;
6f97dba0
AL		 1429}
1430
1431static void tty_serial_init(int fd, int speed,
1432 int parity, int data_bits, int stop_bits)
1433{
1434 struct termios tty;
1435 speed_t spd;
1436
1437#if 0
1438 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1439 speed, parity, data_bits, stop_bits);
1440#endif
1441 tcgetattr (fd, &tty);
1442
45eea13b
SW		 1443#define check_speed(val) if (speed <= val) { spd = B##val; break; }
1444 speed = speed * 10 / 11;
1445 do {
1446 check_speed(50);
1447 check_speed(75);
1448 check_speed(110);
1449 check_speed(134);
1450 check_speed(150);
1451 check_speed(200);
1452 check_speed(300);
1453 check_speed(600);
1454 check_speed(1200);
1455 check_speed(1800);
1456 check_speed(2400);
1457 check_speed(4800);
1458 check_speed(9600);
1459 check_speed(19200);
1460 check_speed(38400);
1461 /* Non-Posix values follow. They may be unsupported on some systems. */
1462 check_speed(57600);
1463 check_speed(115200);
1464#ifdef B230400
1465 check_speed(230400);
1466#endif
1467#ifdef B460800
1468 check_speed(460800);
1469#endif
1470#ifdef B500000
1471 check_speed(500000);
1472#endif
1473#ifdef B576000
1474 check_speed(576000);
1475#endif
1476#ifdef B921600
1477 check_speed(921600);
1478#endif
1479#ifdef B1000000
1480 check_speed(1000000);
1481#endif
1482#ifdef B1152000
1483 check_speed(1152000);
1484#endif
1485#ifdef B1500000
1486 check_speed(1500000);
1487#endif
1488#ifdef B2000000
1489 check_speed(2000000);
1490#endif
1491#ifdef B2500000
1492 check_speed(2500000);
1493#endif
1494#ifdef B3000000
1495 check_speed(3000000);
1496#endif
1497#ifdef B3500000
1498 check_speed(3500000);
1499#endif
1500#ifdef B4000000
1501 check_speed(4000000);
1502#endif
6f97dba0 1503 spd = B115200;
45eea13b 1504 } while (0);
6f97dba0
AL		 1505
1506 cfsetispeed(&tty, spd);
1507 cfsetospeed(&tty, spd);
1508
1509 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1510 |INLCR|IGNCR|ICRNL|IXON);
1511 tty.c_oflag |= OPOST;
1512 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1513 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1514 switch(data_bits) {
1515 default:
1516 case 8:
1517 tty.c_cflag |= CS8;
1518 break;
1519 case 7:
1520 tty.c_cflag |= CS7;
1521 break;
1522 case 6:
1523 tty.c_cflag |= CS6;
1524 break;
1525 case 5:
1526 tty.c_cflag |= CS5;
1527 break;
1528 }
1529 switch(parity) {
1530 default:
1531 case 'N':
1532 break;
1533 case 'E':
1534 tty.c_cflag |= PARENB;
1535 break;
1536 case 'O':
1537 tty.c_cflag |= PARENB | PARODD;
1538 break;
1539 }
1540 if (stop_bits == 2)
1541 tty.c_cflag |= CSTOPB;
1542
1543 tcsetattr (fd, TCSANOW, &tty);
1544}
1545
1546static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1547{
1548 FDCharDriver *s = chr->opaque;
1549
1550 switch(cmd) {
1551 case CHR_IOCTL_SERIAL_SET_PARAMS:
1552 {
1553 QEMUSerialSetParams *ssp = arg;
a29753f8
AL		 1554 tty_serial_init(g_io_channel_unix_get_fd(s->fd_in),
1555 ssp->speed, ssp->parity,
6f97dba0
AL		 1556 ssp->data_bits, ssp->stop_bits);
1557 }
1558 break;
1559 case CHR_IOCTL_SERIAL_SET_BREAK:
1560 {
1561 int enable = *(int *)arg;
a29753f8
AL		 1562 if (enable) {
1563 tcsendbreak(g_io_channel_unix_get_fd(s->fd_in), 1);
1564 }
6f97dba0
AL		 1565 }
1566 break;
1567 case CHR_IOCTL_SERIAL_GET_TIOCM:
1568 {
1569 int sarg = 0;
1570 int *targ = (int *)arg;
a29753f8 1571 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &sarg);
6f97dba0 1572 *targ = 0;
b4abdfa4 1573 if (sarg & TIOCM_CTS)
6f97dba0 1574 *targ |= CHR_TIOCM_CTS;
b4abdfa4 1575 if (sarg & TIOCM_CAR)
6f97dba0 1576 *targ |= CHR_TIOCM_CAR;
b4abdfa4 1577 if (sarg & TIOCM_DSR)
6f97dba0 1578 *targ |= CHR_TIOCM_DSR;
b4abdfa4 1579 if (sarg & TIOCM_RI)
6f97dba0 1580 *targ |= CHR_TIOCM_RI;
b4abdfa4 1581 if (sarg & TIOCM_DTR)
6f97dba0 1582 *targ |= CHR_TIOCM_DTR;
b4abdfa4 1583 if (sarg & TIOCM_RTS)
6f97dba0
AL		 1584 *targ |= CHR_TIOCM_RTS;
1585 }
1586 break;
1587 case CHR_IOCTL_SERIAL_SET_TIOCM:
1588 {
1589 int sarg = *(int *)arg;
1590 int targ = 0;
a29753f8 1591 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &targ);
b4abdfa4
AJ		 1592 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1593 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1594 if (sarg & CHR_TIOCM_CTS)
1595 targ |= TIOCM_CTS;
1596 if (sarg & CHR_TIOCM_CAR)
1597 targ |= TIOCM_CAR;
1598 if (sarg & CHR_TIOCM_DSR)
1599 targ |= TIOCM_DSR;
1600 if (sarg & CHR_TIOCM_RI)
1601 targ |= TIOCM_RI;
1602 if (sarg & CHR_TIOCM_DTR)
6f97dba0 1603 targ |= TIOCM_DTR;
b4abdfa4 1604 if (sarg & CHR_TIOCM_RTS)
6f97dba0 1605 targ |= TIOCM_RTS;
a29753f8 1606 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMSET, &targ);
6f97dba0
AL		 1607 }
1608 break;
1609 default:
1610 return -ENOTSUP;
1611 }
1612 return 0;
1613}
1614
4266a134
DA		 1615static void qemu_chr_close_tty(CharDriverState *chr)
1616{
1617 FDCharDriver *s = chr->opaque;
1618 int fd = -1;
1619
1620 if (s) {
a29753f8 1621 fd = g_io_channel_unix_get_fd(s->fd_in);
4266a134
DA		 1622 }
1623
1624 fd_chr_close(chr);
1625
1626 if (fd >= 0) {
1627 close(fd);
1628 }
1629}
1630
d59044ef
GH		 1631static CharDriverState *qemu_chr_open_tty_fd(int fd)
1632{
1633 CharDriverState *chr;
1634
1635 tty_serial_init(fd, 115200, 'N', 8, 1);
1636 chr = qemu_chr_open_fd(fd, fd);
1637 chr->chr_ioctl = tty_serial_ioctl;
1638 chr->chr_close = qemu_chr_close_tty;
1639 return chr;
1640}
6f97dba0
AL		 1641#endif /* __linux__ || __sun__ */
1642
1643#if defined(__linux__)
e551498e
GH		 1644
1645#define HAVE_CHARDEV_PARPORT 1
1646
6f97dba0
AL		 1647typedef struct {
1648 int fd;
1649 int mode;
1650} ParallelCharDriver;
1651
1652static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1653{
1654 if (s->mode != mode) {
1655 int m = mode;
1656 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1657 return 0;
1658 s->mode = mode;
1659 }
1660 return 1;
1661}
1662
1663static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1664{
1665 ParallelCharDriver *drv = chr->opaque;
1666 int fd = drv->fd;
1667 uint8_t b;
1668
1669 switch(cmd) {
1670 case CHR_IOCTL_PP_READ_DATA:
1671 if (ioctl(fd, PPRDATA, &b) < 0)
1672 return -ENOTSUP;
1673 *(uint8_t *)arg = b;
1674 break;
1675 case CHR_IOCTL_PP_WRITE_DATA:
1676 b = *(uint8_t *)arg;
1677 if (ioctl(fd, PPWDATA, &b) < 0)
1678 return -ENOTSUP;
1679 break;
1680 case CHR_IOCTL_PP_READ_CONTROL:
1681 if (ioctl(fd, PPRCONTROL, &b) < 0)
1682 return -ENOTSUP;
1683 /* Linux gives only the lowest bits, and no way to know data
1684 direction! For better compatibility set the fixed upper
1685 bits. */
1686 *(uint8_t *)arg = b | 0xc0;
1687 break;
1688 case CHR_IOCTL_PP_WRITE_CONTROL:
1689 b = *(uint8_t *)arg;
1690 if (ioctl(fd, PPWCONTROL, &b) < 0)
1691 return -ENOTSUP;
1692 break;
1693 case CHR_IOCTL_PP_READ_STATUS:
1694 if (ioctl(fd, PPRSTATUS, &b) < 0)
1695 return -ENOTSUP;
1696 *(uint8_t *)arg = b;
1697 break;
1698 case CHR_IOCTL_PP_DATA_DIR:
1699 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1700 return -ENOTSUP;
1701 break;
1702 case CHR_IOCTL_PP_EPP_READ_ADDR:
1703 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1704 struct ParallelIOArg *parg = arg;
1705 int n = read(fd, parg->buffer, parg->count);
1706 if (n != parg->count) {
1707 return -EIO;
1708 }
1709 }
1710 break;
1711 case CHR_IOCTL_PP_EPP_READ:
1712 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1713 struct ParallelIOArg *parg = arg;
1714 int n = read(fd, parg->buffer, parg->count);
1715 if (n != parg->count) {
1716 return -EIO;
1717 }
1718 }
1719 break;
1720 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1721 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1722 struct ParallelIOArg *parg = arg;
1723 int n = write(fd, parg->buffer, parg->count);
1724 if (n != parg->count) {
1725 return -EIO;
1726 }
1727 }
1728 break;
1729 case CHR_IOCTL_PP_EPP_WRITE:
1730 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1731 struct ParallelIOArg *parg = arg;
1732 int n = write(fd, parg->buffer, parg->count);
1733 if (n != parg->count) {
1734 return -EIO;
1735 }
1736 }
1737 break;
1738 default:
1739 return -ENOTSUP;
1740 }
1741 return 0;
1742}
1743
1744static void pp_close(CharDriverState *chr)
1745{
1746 ParallelCharDriver *drv = chr->opaque;
1747 int fd = drv->fd;
1748
1749 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1750 ioctl(fd, PPRELEASE);
1751 close(fd);
7267c094 1752 g_free(drv);
a425d23f 1753 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1754}
1755
88a946d3 1756static CharDriverState *qemu_chr_open_pp_fd(int fd)
6f97dba0
AL		 1757{
1758 CharDriverState *chr;
1759 ParallelCharDriver *drv;
6f97dba0
AL		 1760
1761 if (ioctl(fd, PPCLAIM) < 0) {
1762 close(fd);
1f51470d 1763 return NULL;
6f97dba0
AL		 1764 }
1765
7267c094 1766 drv = g_malloc0(sizeof(ParallelCharDriver));
6f97dba0
AL		 1767 drv->fd = fd;
1768 drv->mode = IEEE1284_MODE_COMPAT;
1769
db39fcf1 1770 chr = qemu_chr_alloc();
6f97dba0
AL		 1771 chr->chr_write = null_chr_write;
1772 chr->chr_ioctl = pp_ioctl;
1773 chr->chr_close = pp_close;
1774 chr->opaque = drv;
1775
1f51470d 1776 return chr;
6f97dba0
AL		 1777}
1778#endif /* __linux__ */
1779
a167ba50 1780#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
e551498e
GH		 1781
1782#define HAVE_CHARDEV_PARPORT 1
1783
6972f935
BS		 1784static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1785{
e0efb993 1786 int fd = (int)(intptr_t)chr->opaque;
6972f935
BS		 1787 uint8_t b;
1788
1789 switch(cmd) {
1790 case CHR_IOCTL_PP_READ_DATA:
1791 if (ioctl(fd, PPIGDATA, &b) < 0)
1792 return -ENOTSUP;
1793 *(uint8_t *)arg = b;
1794 break;
1795 case CHR_IOCTL_PP_WRITE_DATA:
1796 b = *(uint8_t *)arg;
1797 if (ioctl(fd, PPISDATA, &b) < 0)
1798 return -ENOTSUP;
1799 break;
1800 case CHR_IOCTL_PP_READ_CONTROL:
1801 if (ioctl(fd, PPIGCTRL, &b) < 0)
1802 return -ENOTSUP;
1803 *(uint8_t *)arg = b;
1804 break;
1805 case CHR_IOCTL_PP_WRITE_CONTROL:
1806 b = *(uint8_t *)arg;
1807 if (ioctl(fd, PPISCTRL, &b) < 0)
1808 return -ENOTSUP;
1809 break;
1810 case CHR_IOCTL_PP_READ_STATUS:
1811 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1812 return -ENOTSUP;
1813 *(uint8_t *)arg = b;
1814 break;
1815 default:
1816 return -ENOTSUP;
1817 }
1818 return 0;
1819}
1820
88a946d3 1821static CharDriverState *qemu_chr_open_pp_fd(int fd)
6972f935
BS		 1822{
1823 CharDriverState *chr;
6972f935 1824
db39fcf1 1825 chr = qemu_chr_alloc();
e0efb993 1826 chr->opaque = (void *)(intptr_t)fd;
6972f935
BS		 1827 chr->chr_write = null_chr_write;
1828 chr->chr_ioctl = pp_ioctl;
bd5c51ee 1829 chr->explicit_be_open = true;
1f51470d 1830 return chr;
6972f935
BS		 1831}
1832#endif
1833
6f97dba0
AL		 1834#else /* _WIN32 */
1835
1836typedef struct {
1837 int max_size;
1838 HANDLE hcom, hrecv, hsend;
9005b2a7 1839 OVERLAPPED orecv;
6f97dba0
AL		 1840 BOOL fpipe;
1841 DWORD len;
9005b2a7
PB		 1842
1843 /* Protected by the CharDriverState chr_write_lock. */
1844 OVERLAPPED osend;
6f97dba0
AL		 1845} WinCharState;
1846
db418a0a
FC		 1847typedef struct {
1848 HANDLE hStdIn;
1849 HANDLE hInputReadyEvent;
1850 HANDLE hInputDoneEvent;
1851 HANDLE hInputThread;
1852 uint8_t win_stdio_buf;
1853} WinStdioCharState;
1854
6f97dba0
AL		 1855#define NSENDBUF 2048
1856#define NRECVBUF 2048
1857#define MAXCONNECT 1
1858#define NTIMEOUT 5000
1859
1860static int win_chr_poll(void *opaque);
1861static int win_chr_pipe_poll(void *opaque);
1862
1863static void win_chr_close(CharDriverState *chr)
1864{
1865 WinCharState *s = chr->opaque;
1866
1867 if (s->hsend) {
1868 CloseHandle(s->hsend);
1869 s->hsend = NULL;
1870 }
1871 if (s->hrecv) {
1872 CloseHandle(s->hrecv);
1873 s->hrecv = NULL;
1874 }
1875 if (s->hcom) {
1876 CloseHandle(s->hcom);
1877 s->hcom = NULL;
1878 }
1879 if (s->fpipe)
1880 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1881 else
1882 qemu_del_polling_cb(win_chr_poll, chr);
793cbfb5 1883
a425d23f 1884 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1885}
1886
1887static int win_chr_init(CharDriverState *chr, const char *filename)
1888{
1889 WinCharState *s = chr->opaque;
1890 COMMCONFIG comcfg;
1891 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1892 COMSTAT comstat;
1893 DWORD size;
1894 DWORD err;
1895
1896 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1897 if (!s->hsend) {
1898 fprintf(stderr, "Failed CreateEvent\n");
1899 goto fail;
1900 }
1901 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1902 if (!s->hrecv) {
1903 fprintf(stderr, "Failed CreateEvent\n");
1904 goto fail;
1905 }
1906
1907 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1908 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1909 if (s->hcom == INVALID_HANDLE_VALUE) {
1910 fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
1911 s->hcom = NULL;
1912 goto fail;
1913 }
1914
1915 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
1916 fprintf(stderr, "Failed SetupComm\n");
1917 goto fail;
1918 }
1919
1920 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1921 size = sizeof(COMMCONFIG);
1922 GetDefaultCommConfig(filename, &comcfg, &size);
1923 comcfg.dcb.DCBlength = sizeof(DCB);
1924 CommConfigDialog(filename, NULL, &comcfg);
1925
1926 if (!SetCommState(s->hcom, &comcfg.dcb)) {
1927 fprintf(stderr, "Failed SetCommState\n");
1928 goto fail;
1929 }
1930
1931 if (!SetCommMask(s->hcom, EV_ERR)) {
1932 fprintf(stderr, "Failed SetCommMask\n");
1933 goto fail;
1934 }
1935
1936 cto.ReadIntervalTimeout = MAXDWORD;
1937 if (!SetCommTimeouts(s->hcom, &cto)) {
1938 fprintf(stderr, "Failed SetCommTimeouts\n");
1939 goto fail;
1940 }
1941
1942 if (!ClearCommError(s->hcom, &err, &comstat)) {
1943 fprintf(stderr, "Failed ClearCommError\n");
1944 goto fail;
1945 }
1946 qemu_add_polling_cb(win_chr_poll, chr);
1947 return 0;
1948
1949 fail:
1950 win_chr_close(chr);
1951 return -1;
1952}
1953
9005b2a7 1954/* Called with chr_write_lock held. */
6f97dba0
AL		 1955static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1956{
1957 WinCharState *s = chr->opaque;
1958 DWORD len, ret, size, err;
1959
1960 len = len1;
1961 ZeroMemory(&s->osend, sizeof(s->osend));
1962 s->osend.hEvent = s->hsend;
1963 while (len > 0) {
1964 if (s->hsend)
1965 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1966 else
1967 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1968 if (!ret) {
1969 err = GetLastError();
1970 if (err == ERROR_IO_PENDING) {
1971 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1972 if (ret) {
1973 buf += size;
1974 len -= size;
1975 } else {
1976 break;
1977 }
1978 } else {
1979 break;
1980 }
1981 } else {
1982 buf += size;
1983 len -= size;
1984 }
1985 }
1986 return len1 - len;
1987}
1988
1989static int win_chr_read_poll(CharDriverState *chr)
1990{
1991 WinCharState *s = chr->opaque;
1992
909cda12 1993 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 1994 return s->max_size;
1995}
1996
1997static void win_chr_readfile(CharDriverState *chr)
1998{
1999 WinCharState *s = chr->opaque;
2000 int ret, err;
9bd7854e 2001 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2002 DWORD size;
2003
2004 ZeroMemory(&s->orecv, sizeof(s->orecv));
2005 s->orecv.hEvent = s->hrecv;
2006 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
2007 if (!ret) {
2008 err = GetLastError();
2009 if (err == ERROR_IO_PENDING) {
2010 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
2011 }
2012 }
2013
2014 if (size > 0) {
fa5efccb 2015 qemu_chr_be_write(chr, buf, size);
6f97dba0
AL		 2016 }
2017}
2018
2019static void win_chr_read(CharDriverState *chr)
2020{
2021 WinCharState *s = chr->opaque;
2022
2023 if (s->len > s->max_size)
2024 s->len = s->max_size;
2025 if (s->len == 0)
2026 return;
2027
2028 win_chr_readfile(chr);
2029}
2030
2031static int win_chr_poll(void *opaque)
2032{
2033 CharDriverState *chr = opaque;
2034 WinCharState *s = chr->opaque;
2035 COMSTAT status;
2036 DWORD comerr;
2037
2038 ClearCommError(s->hcom, &comerr, &status);
2039 if (status.cbInQue > 0) {
2040 s->len = status.cbInQue;
2041 win_chr_read_poll(chr);
2042 win_chr_read(chr);
2043 return 1;
2044 }
2045 return 0;
2046}
2047
d59044ef 2048static CharDriverState *qemu_chr_open_win_path(const char *filename)
6f97dba0
AL		 2049{
2050 CharDriverState *chr;
2051 WinCharState *s;
2052
db39fcf1 2053 chr = qemu_chr_alloc();
7267c094 2054 s = g_malloc0(sizeof(WinCharState));
6f97dba0
AL		 2055 chr->opaque = s;
2056 chr->chr_write = win_chr_write;
2057 chr->chr_close = win_chr_close;
2058
2059 if (win_chr_init(chr, filename) < 0) {
2e02e18b
SW		 2060 g_free(s);
2061 g_free(chr);
1f51470d 2062 return NULL;
6f97dba0 2063 }
1f51470d 2064 return chr;
6f97dba0
AL		 2065}
2066
2067static int win_chr_pipe_poll(void *opaque)
2068{
2069 CharDriverState *chr = opaque;
2070 WinCharState *s = chr->opaque;
2071 DWORD size;
2072
2073 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
2074 if (size > 0) {
2075 s->len = size;
2076 win_chr_read_poll(chr);
2077 win_chr_read(chr);
2078 return 1;
2079 }
2080 return 0;
2081}
2082
2083static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
2084{
2085 WinCharState *s = chr->opaque;
2086 OVERLAPPED ov;
2087 int ret;
2088 DWORD size;
9f781168 2089 char openname[CHR_MAX_FILENAME_SIZE];
6f97dba0
AL		 2090
2091 s->fpipe = TRUE;
2092
2093 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
2094 if (!s->hsend) {
2095 fprintf(stderr, "Failed CreateEvent\n");
2096 goto fail;
2097 }
2098 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
2099 if (!s->hrecv) {
2100 fprintf(stderr, "Failed CreateEvent\n");
2101 goto fail;
2102 }
2103
2104 snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
2105 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
2106 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
2107 PIPE_WAIT,
2108 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
2109 if (s->hcom == INVALID_HANDLE_VALUE) {
2110 fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
2111 s->hcom = NULL;
2112 goto fail;
2113 }
2114
2115 ZeroMemory(&ov, sizeof(ov));
2116 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
2117 ret = ConnectNamedPipe(s->hcom, &ov);
2118 if (ret) {
2119 fprintf(stderr, "Failed ConnectNamedPipe\n");
2120 goto fail;
2121 }
2122
2123 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
2124 if (!ret) {
2125 fprintf(stderr, "Failed GetOverlappedResult\n");
2126 if (ov.hEvent) {
2127 CloseHandle(ov.hEvent);
2128 ov.hEvent = NULL;
2129 }
2130 goto fail;
2131 }
2132
2133 if (ov.hEvent) {
2134 CloseHandle(ov.hEvent);
2135 ov.hEvent = NULL;
2136 }
2137 qemu_add_polling_cb(win_chr_pipe_poll, chr);
2138 return 0;
2139
2140 fail:
2141 win_chr_close(chr);
2142 return -1;
2143}
2144
2145
548cbb36 2146static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
6f97dba0 2147{
548cbb36 2148 const char *filename = opts->device;
6f97dba0
AL		 2149 CharDriverState *chr;
2150 WinCharState *s;
2151
db39fcf1 2152 chr = qemu_chr_alloc();
7267c094 2153 s = g_malloc0(sizeof(WinCharState));
6f97dba0
AL		 2154 chr->opaque = s;
2155 chr->chr_write = win_chr_write;
2156 chr->chr_close = win_chr_close;
2157
2158 if (win_chr_pipe_init(chr, filename) < 0) {
2e02e18b
SW		 2159 g_free(s);
2160 g_free(chr);
1f51470d 2161 return NULL;
6f97dba0 2162 }
1f51470d 2163 return chr;
6f97dba0
AL		 2164}
2165
1f51470d 2166static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
6f97dba0
AL		 2167{
2168 CharDriverState *chr;
2169 WinCharState *s;
2170
db39fcf1 2171 chr = qemu_chr_alloc();
7267c094 2172 s = g_malloc0(sizeof(WinCharState));
6f97dba0
AL		 2173 s->hcom = fd_out;
2174 chr->opaque = s;
2175 chr->chr_write = win_chr_write;
1f51470d 2176 return chr;
6f97dba0
AL		 2177}
2178
d9ac374f 2179static CharDriverState *qemu_chr_open_win_con(void)
6f97dba0 2180{
1f51470d 2181 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
6f97dba0
AL		 2182}
2183
db418a0a
FC		 2184static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
2185{
2186 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
2187 DWORD dwSize;
2188 int len1;
2189
2190 len1 = len;
2191
2192 while (len1 > 0) {
2193 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
2194 break;
2195 }
2196 buf += dwSize;
2197 len1 -= dwSize;
2198 }
2199
2200 return len - len1;
2201}
2202
2203static void win_stdio_wait_func(void *opaque)
2204{
2205 CharDriverState *chr = opaque;
2206 WinStdioCharState *stdio = chr->opaque;
2207 INPUT_RECORD buf[4];
2208 int ret;
2209 DWORD dwSize;
2210 int i;
2211
dff7424d 2212 ret = ReadConsoleInput(stdio->hStdIn, buf, ARRAY_SIZE(buf), &dwSize);
db418a0a
FC		 2213
2214 if (!ret) {
2215 /* Avoid error storm */
2216 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2217 return;
2218 }
2219
2220 for (i = 0; i < dwSize; i++) {
2221 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
2222
2223 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
2224 int j;
2225 if (kev->uChar.AsciiChar != 0) {
2226 for (j = 0; j < kev->wRepeatCount; j++) {
2227 if (qemu_chr_be_can_write(chr)) {
2228 uint8_t c = kev->uChar.AsciiChar;
2229 qemu_chr_be_write(chr, &c, 1);
2230 }
2231 }
2232 }
2233 }
2234 }
2235}
2236
2237static DWORD WINAPI win_stdio_thread(LPVOID param)
2238{
2239 CharDriverState *chr = param;
2240 WinStdioCharState *stdio = chr->opaque;
2241 int ret;
2242 DWORD dwSize;
2243
2244 while (1) {
2245
2246 /* Wait for one byte */
2247 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
2248
2249 /* Exit in case of error, continue if nothing read */
2250 if (!ret) {
2251 break;
2252 }
2253 if (!dwSize) {
2254 continue;
2255 }
2256
2257 /* Some terminal emulator returns \r\n for Enter, just pass \n */
2258 if (stdio->win_stdio_buf == '\r') {
2259 continue;
2260 }
2261
2262 /* Signal the main thread and wait until the byte was eaten */
2263 if (!SetEvent(stdio->hInputReadyEvent)) {
2264 break;
2265 }
2266 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
2267 != WAIT_OBJECT_0) {
2268 break;
2269 }
2270 }
2271
2272 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2273 return 0;
2274}
2275
2276static void win_stdio_thread_wait_func(void *opaque)
2277{
2278 CharDriverState *chr = opaque;
2279 WinStdioCharState *stdio = chr->opaque;
2280
2281 if (qemu_chr_be_can_write(chr)) {
2282 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
2283 }
2284
2285 SetEvent(stdio->hInputDoneEvent);
2286}
2287
2288static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
2289{
2290 WinStdioCharState *stdio = chr->opaque;
2291 DWORD dwMode = 0;
2292
2293 GetConsoleMode(stdio->hStdIn, &dwMode);
2294
2295 if (echo) {
2296 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
2297 } else {
2298 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
2299 }
2300}
2301
2302static void win_stdio_close(CharDriverState *chr)
2303{
2304 WinStdioCharState *stdio = chr->opaque;
2305
2306 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
2307 CloseHandle(stdio->hInputReadyEvent);
2308 }
2309 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
2310 CloseHandle(stdio->hInputDoneEvent);
2311 }
2312 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
2313 TerminateThread(stdio->hInputThread, 0);
2314 }
2315
2316 g_free(chr->opaque);
2317 g_free(chr);
db418a0a
FC		 2318}
2319
7c358031 2320static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
db418a0a
FC		 2321{
2322 CharDriverState *chr;
2323 WinStdioCharState *stdio;
2324 DWORD dwMode;
2325 int is_console = 0;
2326
db39fcf1 2327 chr = qemu_chr_alloc();
db418a0a
FC		 2328 stdio = g_malloc0(sizeof(WinStdioCharState));
2329
2330 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
2331 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
2332 fprintf(stderr, "cannot open stdio: invalid handle\n");
2333 exit(1);
2334 }
2335
2336 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
2337
2338 chr->opaque = stdio;
2339 chr->chr_write = win_stdio_write;
2340 chr->chr_close = win_stdio_close;
2341
ed7a1540
AL		 2342 if (is_console) {
2343 if (qemu_add_wait_object(stdio->hStdIn,
2344 win_stdio_wait_func, chr)) {
2345 fprintf(stderr, "qemu_add_wait_object: failed\n");
2346 }
2347 } else {
2348 DWORD dwId;
2349
2350 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2351 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2352 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
2353 chr, 0, &dwId);
2354
2355 if (stdio->hInputThread == INVALID_HANDLE_VALUE
2356 || stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
2357 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
2358 fprintf(stderr, "cannot create stdio thread or event\n");
2359 exit(1);
2360 }
2361 if (qemu_add_wait_object(stdio->hInputReadyEvent,
2362 win_stdio_thread_wait_func, chr)) {
2363 fprintf(stderr, "qemu_add_wait_object: failed\n");
db418a0a
FC		 2364 }
2365 }
2366
2367 dwMode |= ENABLE_LINE_INPUT;
2368
ed7a1540 2369 if (is_console) {
db418a0a
FC		 2370 /* set the terminal in raw mode */
2371 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2372 dwMode |= ENABLE_PROCESSED_INPUT;
2373 }
2374
2375 SetConsoleMode(stdio->hStdIn, dwMode);
2376
2377 chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
2378 qemu_chr_fe_set_echo(chr, false);
2379
1f51470d 2380 return chr;
db418a0a 2381}
6f97dba0
AL		 2382#endif /* !_WIN32 */
2383
5ab8211b 2384
6f97dba0
AL		 2385/***********************************************************/
2386/* UDP Net console */
2387
2388typedef struct {
2389 int fd;
76a9644b 2390 GIOChannel *chan;
9bd7854e 2391 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2392 int bufcnt;
2393 int bufptr;
2394 int max_size;
2395} NetCharDriver;
2396
9005b2a7 2397/* Called with chr_write_lock held. */
6f97dba0
AL		 2398static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2399{
2400 NetCharDriver *s = chr->opaque;
76a9644b
AL		 2401 gsize bytes_written;
2402 GIOStatus status;
2403
2404 status = g_io_channel_write_chars(s->chan, (const gchar *)buf, len, &bytes_written, NULL);
2405 if (status == G_IO_STATUS_EOF) {
2406 return 0;
2407 } else if (status != G_IO_STATUS_NORMAL) {
2408 return -1;
2409 }
6f97dba0 2410
76a9644b 2411 return bytes_written;
6f97dba0
AL		 2412}
2413
2414static int udp_chr_read_poll(void *opaque)
2415{
2416 CharDriverState *chr = opaque;
2417 NetCharDriver *s = chr->opaque;
2418
909cda12 2419 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2420
2421 /* If there were any stray characters in the queue process them
2422 * first
2423 */
2424 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
fa5efccb 2425 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
6f97dba0 2426 s->bufptr++;
909cda12 2427 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2428 }
2429 return s->max_size;
2430}
2431
76a9644b 2432static gboolean udp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 2433{
2434 CharDriverState *chr = opaque;
2435 NetCharDriver *s = chr->opaque;
76a9644b
AL		 2436 gsize bytes_read = 0;
2437 GIOStatus status;
6f97dba0 2438
cdbf6e16
PB		 2439 if (s->max_size == 0) {
2440 return TRUE;
2441 }
76a9644b
AL		 2442 status = g_io_channel_read_chars(s->chan, (gchar *)s->buf, sizeof(s->buf),
2443 &bytes_read, NULL);
2444 s->bufcnt = bytes_read;
6f97dba0 2445 s->bufptr = s->bufcnt;
76a9644b 2446 if (status != G_IO_STATUS_NORMAL) {
26da70c7 2447 remove_fd_in_watch(chr);
76a9644b
AL		 2448 return FALSE;
2449 }
6f97dba0
AL		 2450
2451 s->bufptr = 0;
2452 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
fa5efccb 2453 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
6f97dba0 2454 s->bufptr++;
909cda12 2455 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0 2456 }
76a9644b
AL		 2457
2458 return TRUE;
6f97dba0
AL		 2459}
2460
2461static void udp_chr_update_read_handler(CharDriverState *chr)
2462{
2463 NetCharDriver *s = chr->opaque;
2464
26da70c7 2465 remove_fd_in_watch(chr);
76a9644b 2466 if (s->chan) {
7ba9addc
AS		 2467 chr->fd_in_tag = io_add_watch_poll(s->chan, udp_chr_read_poll,
2468 udp_chr_read, chr);
6f97dba0
AL		 2469 }
2470}
2471
819f56b7
AL		 2472static void udp_chr_close(CharDriverState *chr)
2473{
2474 NetCharDriver *s = chr->opaque;
26da70c7
AS		 2475
2476 remove_fd_in_watch(chr);
76a9644b
AL		 2477 if (s->chan) {
2478 g_io_channel_unref(s->chan);
819f56b7
AL		 2479 closesocket(s->fd);
2480 }
7267c094 2481 g_free(s);
a425d23f 2482 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
819f56b7
AL		 2483}
2484
3ecc059d 2485static CharDriverState *qemu_chr_open_udp_fd(int fd)
6f97dba0
AL		 2486{
2487 CharDriverState *chr = NULL;
2488 NetCharDriver *s = NULL;
6f97dba0 2489
db39fcf1 2490 chr = qemu_chr_alloc();
7267c094 2491 s = g_malloc0(sizeof(NetCharDriver));
6f97dba0 2492
6f97dba0 2493 s->fd = fd;
76a9644b 2494 s->chan = io_channel_from_socket(s->fd);
6f97dba0
AL		 2495 s->bufcnt = 0;
2496 s->bufptr = 0;
2497 chr->opaque = s;
2498 chr->chr_write = udp_chr_write;
2499 chr->chr_update_read_handler = udp_chr_update_read_handler;
819f56b7 2500 chr->chr_close = udp_chr_close;
bd5c51ee
MR		 2501 /* be isn't opened until we get a connection */
2502 chr->explicit_be_open = true;
1f51470d 2503 return chr;
3ecc059d 2504}
6f97dba0 2505
6f97dba0
AL		 2506/***********************************************************/
2507/* TCP Net console */
2508
2509typedef struct {
2ea5a7af
AL		 2510
2511 GIOChannel *chan, *listen_chan;
7ba9addc 2512 guint listen_tag;
6f97dba0
AL		 2513 int fd, listen_fd;
2514 int connected;
2515 int max_size;
2516 int do_telnetopt;
2517 int do_nodelay;
2518 int is_unix;
c76bf6bb
NN		 2519 int *read_msgfds;
2520 int read_msgfds_num;
d39aac7a
NN		 2521 int *write_msgfds;
2522 int write_msgfds_num;
cfb429cb
CM		 2523
2524 SocketAddress *addr;
2525 bool is_listen;
2526 bool is_telnet;
5dd1f02b
CM		 2527
2528 guint reconnect_timer;
2529 int64_t reconnect_time;
5008e5b7 2530 bool connect_err_reported;
6f97dba0
AL		 2531} TCPCharDriver;
2532
5dd1f02b
CM		 2533static gboolean socket_reconnect_timeout(gpointer opaque);
2534
2535static void qemu_chr_socket_restart_timer(CharDriverState *chr)
2536{
2537 TCPCharDriver *s = chr->opaque;
2538 assert(s->connected == 0);
2539 s->reconnect_timer = g_timeout_add_seconds(s->reconnect_time,
2540 socket_reconnect_timeout, chr);
2541}
2542
5008e5b7
CM		 2543static void check_report_connect_error(CharDriverState *chr,
2544 Error *err)
2545{
2546 TCPCharDriver *s = chr->opaque;
2547
2548 if (!s->connect_err_reported) {
2549 error_report("Unable to connect character device %s: %s",
2550 chr->label, error_get_pretty(err));
2551 s->connect_err_reported = true;
2552 }
2553 qemu_chr_socket_restart_timer(chr);
2554}
2555
2ea5a7af 2556static gboolean tcp_chr_accept(GIOChannel *chan, GIOCondition cond, void *opaque);
6f97dba0 2557
d39aac7a
NN		 2558#ifndef _WIN32
2559static int unix_send_msgfds(CharDriverState *chr, const uint8_t *buf, int len)
2560{
2561 TCPCharDriver *s = chr->opaque;
2562 struct msghdr msgh;
2563 struct iovec iov;
2564 int r;
2565
2566 size_t fd_size = s->write_msgfds_num * sizeof(int);
2567 char control[CMSG_SPACE(fd_size)];
2568 struct cmsghdr *cmsg;
2569
2570 memset(&msgh, 0, sizeof(msgh));
2571 memset(control, 0, sizeof(control));
2572
2573 /* set the payload */
2574 iov.iov_base = (uint8_t *) buf;
2575 iov.iov_len = len;
2576
2577 msgh.msg_iov = &iov;
2578 msgh.msg_iovlen = 1;
2579
2580 msgh.msg_control = control;
2581 msgh.msg_controllen = sizeof(control);
2582
2583 cmsg = CMSG_FIRSTHDR(&msgh);
2584
2585 cmsg->cmsg_len = CMSG_LEN(fd_size);
2586 cmsg->cmsg_level = SOL_SOCKET;
2587 cmsg->cmsg_type = SCM_RIGHTS;
2588 memcpy(CMSG_DATA(cmsg), s->write_msgfds, fd_size);
2589
2590 do {
2591 r = sendmsg(s->fd, &msgh, 0);
2592 } while (r < 0 && errno == EINTR);
2593
2594 /* free the written msgfds, no matter what */
2595 if (s->write_msgfds_num) {
2596 g_free(s->write_msgfds);
2597 s->write_msgfds = 0;
2598 s->write_msgfds_num = 0;
2599 }
2600
2601 return r;
2602}
2603#endif
2604
9005b2a7 2605/* Called with chr_write_lock held. */
6f97dba0
AL		 2606static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2607{
2608 TCPCharDriver *s = chr->opaque;
2609 if (s->connected) {
d39aac7a
NN		 2610#ifndef _WIN32
2611 if (s->is_unix && s->write_msgfds_num) {
2612 return unix_send_msgfds(chr, buf, len);
2613 } else
2614#endif
2615 {
2616 return io_channel_send(s->chan, buf, len);
2617 }
455aa1e0 2618 } else {
6db0fdce 2619 /* XXX: indicate an error ? */
455aa1e0 2620 return len;
6f97dba0
AL		 2621 }
2622}
2623
2624static int tcp_chr_read_poll(void *opaque)
2625{
2626 CharDriverState *chr = opaque;
2627 TCPCharDriver *s = chr->opaque;
2628 if (!s->connected)
2629 return 0;
909cda12 2630 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2631 return s->max_size;
2632}
2633
2634#define IAC 255
2635#define IAC_BREAK 243
2636static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
2637 TCPCharDriver *s,
2638 uint8_t *buf, int *size)
2639{
2640 /* Handle any telnet client's basic IAC options to satisfy char by
2641 * char mode with no echo. All IAC options will be removed from
2642 * the buf and the do_telnetopt variable will be used to track the
2643 * state of the width of the IAC information.
2644 *
2645 * IAC commands come in sets of 3 bytes with the exception of the
2646 * "IAC BREAK" command and the double IAC.
2647 */
2648
2649 int i;
2650 int j = 0;
2651
2652 for (i = 0; i < *size; i++) {
2653 if (s->do_telnetopt > 1) {
2654 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2655 /* Double IAC means send an IAC */
2656 if (j != i)
2657 buf[j] = buf[i];
2658 j++;
2659 s->do_telnetopt = 1;
2660 } else {
2661 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2662 /* Handle IAC break commands by sending a serial break */
a425d23f 2663 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
6f97dba0
AL		 2664 s->do_telnetopt++;
2665 }
2666 s->do_telnetopt++;
2667 }
2668 if (s->do_telnetopt >= 4) {
2669 s->do_telnetopt = 1;
2670 }
2671 } else {
2672 if ((unsigned char)buf[i] == IAC) {
2673 s->do_telnetopt = 2;
2674 } else {
2675 if (j != i)
2676 buf[j] = buf[i];
2677 j++;
2678 }
2679 }
2680 }
2681 *size = j;
2682}
2683
c76bf6bb 2684static int tcp_get_msgfds(CharDriverState *chr, int *fds, int num)
7d174059
MM		 2685{
2686 TCPCharDriver *s = chr->opaque;
c76bf6bb
NN		 2687 int to_copy = (s->read_msgfds_num < num) ? s->read_msgfds_num : num;
2688
c4095726
MT		 2689 assert(num <= TCP_MAX_FDS);
2690
c76bf6bb 2691 if (to_copy) {
d2fc39b4
SH		 2692 int i;
2693
c76bf6bb
NN		 2694 memcpy(fds, s->read_msgfds, to_copy * sizeof(int));
2695
d2fc39b4
SH		 2696 /* Close unused fds */
2697 for (i = to_copy; i < s->read_msgfds_num; i++) {
2698 close(s->read_msgfds[i]);
2699 }
2700
c76bf6bb
NN		 2701 g_free(s->read_msgfds);
2702 s->read_msgfds = 0;
2703 s->read_msgfds_num = 0;
2704 }
2705
2706 return to_copy;
7d174059
MM		 2707}
2708
d39aac7a
NN		 2709static int tcp_set_msgfds(CharDriverState *chr, int *fds, int num)
2710{
2711 TCPCharDriver *s = chr->opaque;
2712
2713 /* clear old pending fd array */
2714 if (s->write_msgfds) {
2715 g_free(s->write_msgfds);
2716 }
2717
2718 if (num) {
2719 s->write_msgfds = g_malloc(num * sizeof(int));
2720 memcpy(s->write_msgfds, fds, num * sizeof(int));
2721 }
2722
2723 s->write_msgfds_num = num;
2724
2725 return 0;
2726}
2727
73bcc2ac 2728#ifndef _WIN32
7d174059
MM		 2729static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
2730{
2731 TCPCharDriver *s = chr->opaque;
2732 struct cmsghdr *cmsg;
2733
2734 for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
c76bf6bb 2735 int fd_size, i;
7d174059 2736
c76bf6bb 2737 if (cmsg->cmsg_len < CMSG_LEN(sizeof(int)) ||
7d174059 2738 cmsg->cmsg_level != SOL_SOCKET ||
c76bf6bb 2739 cmsg->cmsg_type != SCM_RIGHTS) {
7d174059 2740 continue;
c76bf6bb 2741 }
7d174059 2742
c76bf6bb
NN		 2743 fd_size = cmsg->cmsg_len - CMSG_LEN(0);
2744
2745 if (!fd_size) {
7d174059 2746 continue;
c76bf6bb 2747 }
7d174059 2748
c76bf6bb
NN		 2749 /* close and clean read_msgfds */
2750 for (i = 0; i < s->read_msgfds_num; i++) {
2751 close(s->read_msgfds[i]);
2752 }
9b938c72 2753
c76bf6bb
NN		 2754 if (s->read_msgfds_num) {
2755 g_free(s->read_msgfds);
2756 }
2757
2758 s->read_msgfds_num = fd_size / sizeof(int);
2759 s->read_msgfds = g_malloc(fd_size);
2760 memcpy(s->read_msgfds, CMSG_DATA(cmsg), fd_size);
2761
2762 for (i = 0; i < s->read_msgfds_num; i++) {
2763 int fd = s->read_msgfds[i];
2764 if (fd < 0) {
2765 continue;
2766 }
2767
2768 /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
2769 qemu_set_block(fd);
2770
2771 #ifndef MSG_CMSG_CLOEXEC
2772 qemu_set_cloexec(fd);
2773 #endif
2774 }
7d174059
MM		 2775 }
2776}
2777
9977c894
MM		 2778static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2779{
2780 TCPCharDriver *s = chr->opaque;
7cba04f6 2781 struct msghdr msg = { NULL, };
9977c894 2782 struct iovec iov[1];
7d174059
MM		 2783 union {
2784 struct cmsghdr cmsg;
c4095726 2785 char control[CMSG_SPACE(sizeof(int) * TCP_MAX_FDS)];
7d174059 2786 } msg_control;
06138651 2787 int flags = 0;
7d174059 2788 ssize_t ret;
9977c894
MM		 2789
2790 iov[0].iov_base = buf;
2791 iov[0].iov_len = len;
2792
2793 msg.msg_iov = iov;
2794 msg.msg_iovlen = 1;
7d174059
MM		 2795 msg.msg_control = &msg_control;
2796 msg.msg_controllen = sizeof(msg_control);
2797
06138651
CB		 2798#ifdef MSG_CMSG_CLOEXEC
2799 flags |= MSG_CMSG_CLOEXEC;
2800#endif
9172f428
PB		 2801 do {
2802 ret = recvmsg(s->fd, &msg, flags);
2803 } while (ret == -1 && errno == EINTR);
2804
06138651 2805 if (ret > 0 && s->is_unix) {
7d174059 2806 unix_process_msgfd(chr, &msg);
06138651 2807 }
9977c894 2808
7d174059 2809 return ret;
9977c894
MM		 2810}
2811#else
2812static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2813{
2814 TCPCharDriver *s = chr->opaque;
9172f428
PB		 2815 ssize_t ret;
2816
2817 do {
2818 ret = qemu_recv(s->fd, buf, len, 0);
2819 } while (ret == -1 && socket_error() == EINTR);
2820
2821 return ret;
9977c894
MM		 2822}
2823#endif
2824
d3cc5bc4
AS		 2825static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
2826{
2827 TCPCharDriver *s = chr->opaque;
2828 return g_io_create_watch(s->chan, cond);
2829}
2830
7b0bfdf5
NN		 2831static void tcp_chr_disconnect(CharDriverState *chr)
2832{
2833 TCPCharDriver *s = chr->opaque;
2834
2835 s->connected = 0;
2836 if (s->listen_chan) {
2837 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN,
2838 tcp_chr_accept, chr);
2839 }
2840 remove_fd_in_watch(chr);
2841 g_io_channel_unref(s->chan);
2842 s->chan = NULL;
2843 closesocket(s->fd);
2844 s->fd = -1;
16cc4ffe
CM		 2845 SocketAddress_to_str(chr->filename, CHR_MAX_FILENAME_SIZE,
2846 "disconnected:", s->addr, s->is_listen, s->is_telnet);
7b0bfdf5 2847 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
5dd1f02b
CM		 2848 if (s->reconnect_time) {
2849 qemu_chr_socket_restart_timer(chr);
2850 }
7b0bfdf5
NN		 2851}
2852
2ea5a7af 2853static gboolean tcp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 2854{
2855 CharDriverState *chr = opaque;
2856 TCPCharDriver *s = chr->opaque;
9bd7854e 2857 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2858 int len, size;
2859
2ea5a7af 2860 if (!s->connected || s->max_size <= 0) {
cdbf6e16 2861 return TRUE;
2ea5a7af 2862 }
6f97dba0
AL		 2863 len = sizeof(buf);
2864 if (len > s->max_size)
2865 len = s->max_size;
9977c894 2866 size = tcp_chr_recv(chr, (void *)buf, len);
4bf1cb03
NC		 2867 if (size == 0 ||
2868 (size < 0 &&
2869 socket_error() != EAGAIN && socket_error() != EWOULDBLOCK)) {
6f97dba0 2870 /* connection closed */
7b0bfdf5 2871 tcp_chr_disconnect(chr);
6f97dba0
AL		 2872 } else if (size > 0) {
2873 if (s->do_telnetopt)
2874 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2875 if (size > 0)
fa5efccb 2876 qemu_chr_be_write(chr, buf, size);
6f97dba0 2877 }
2ea5a7af
AL		 2878
2879 return TRUE;
6f97dba0
AL		 2880}
2881
7b0bfdf5
NN		 2882static int tcp_chr_sync_read(CharDriverState *chr, const uint8_t *buf, int len)
2883{
2884 TCPCharDriver *s = chr->opaque;
2885 int size;
2886
2887 if (!s->connected) {
2888 return 0;
2889 }
2890
2891 size = tcp_chr_recv(chr, (void *) buf, len);
2892 if (size == 0) {
2893 /* connection closed */
2894 tcp_chr_disconnect(chr);
2895 }
2896
2897 return size;
2898}
2899
68c18d1c
BS		 2900#ifndef _WIN32
2901CharDriverState *qemu_chr_open_eventfd(int eventfd)
2902{
e9d21c43
DM		 2903 CharDriverState *chr = qemu_chr_open_fd(eventfd, eventfd);
2904
2905 if (chr) {
2906 chr->avail_connections = 1;
2907 }
2908
2909 return chr;
6cbf4c8c 2910}
68c18d1c 2911#endif
6cbf4c8c 2912
6f97dba0
AL		 2913static void tcp_chr_connect(void *opaque)
2914{
2915 CharDriverState *chr = opaque;
2916 TCPCharDriver *s = chr->opaque;
01ca519f
CM		 2917 struct sockaddr_storage ss, ps;
2918 socklen_t ss_len = sizeof(ss), ps_len = sizeof(ps);
16cc4ffe
CM		 2919
2920 memset(&ss, 0, ss_len);
2921 if (getsockname(s->fd, (struct sockaddr *) &ss, &ss_len) != 0) {
2922 snprintf(chr->filename, CHR_MAX_FILENAME_SIZE,
2923 "Error in getsockname: %s\n", strerror(errno));
01ca519f
CM		 2924 } else if (getpeername(s->fd, (struct sockaddr *) &ps, &ps_len) != 0) {
2925 snprintf(chr->filename, CHR_MAX_FILENAME_SIZE,
2926 "Error in getpeername: %s\n", strerror(errno));
16cc4ffe 2927 } else {
01ca519f
CM		 2928 sockaddr_to_str(chr->filename, CHR_MAX_FILENAME_SIZE,
2929 &ss, ss_len, &ps, ps_len,
16cc4ffe
CM		 2930 s->is_listen, s->is_telnet);
2931 }
6f97dba0
AL		 2932
2933 s->connected = 1;
2ea5a7af 2934 if (s->chan) {
7ba9addc
AS		 2935 chr->fd_in_tag = io_add_watch_poll(s->chan, tcp_chr_read_poll,
2936 tcp_chr_read, chr);
bbdd2ad0 2937 }
fee204fd 2938 qemu_chr_be_generic_open(chr);
6f97dba0
AL		 2939}
2940
ac1b84dd
GH		 2941static void tcp_chr_update_read_handler(CharDriverState *chr)
2942{
2943 TCPCharDriver *s = chr->opaque;
2944
2945 remove_fd_in_watch(chr);
2946 if (s->chan) {
2947 chr->fd_in_tag = io_add_watch_poll(s->chan, tcp_chr_read_poll,
2948 tcp_chr_read, chr);
2949 }
2950}
2951
6f97dba0
AL		 2952#define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
2953static void tcp_chr_telnet_init(int fd)
2954{
2955 char buf[3];
2956 /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
2957 IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2958 send(fd, (char *)buf, 3, 0);
2959 IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2960 send(fd, (char *)buf, 3, 0);
2961 IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2962 send(fd, (char *)buf, 3, 0);
2963 IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2964 send(fd, (char *)buf, 3, 0);
2965}
2966
13661089
DB		 2967static int tcp_chr_add_client(CharDriverState *chr, int fd)
2968{
2969 TCPCharDriver *s = chr->opaque;
2970 if (s->fd != -1)
2971 return -1;
2972
f9e8cacc 2973 qemu_set_nonblock(fd);
13661089
DB		 2974 if (s->do_nodelay)
2975 socket_set_nodelay(fd);
2976 s->fd = fd;
2ea5a7af 2977 s->chan = io_channel_from_socket(fd);
910b6368
PB		 2978 if (s->listen_tag) {
2979 g_source_remove(s->listen_tag);
2980 s->listen_tag = 0;
2981 }
13661089
DB		 2982 tcp_chr_connect(chr);
2983
2984 return 0;
2985}
2986
2ea5a7af 2987static gboolean tcp_chr_accept(GIOChannel *channel, GIOCondition cond, void *opaque)
6f97dba0
AL		 2988{
2989 CharDriverState *chr = opaque;
2990 TCPCharDriver *s = chr->opaque;
2991 struct sockaddr_in saddr;
2992#ifndef _WIN32
2993 struct sockaddr_un uaddr;
2994#endif
2995 struct sockaddr *addr;
2996 socklen_t len;
2997 int fd;
2998
2999 for(;;) {
3000#ifndef _WIN32
3001 if (s->is_unix) {
3002 len = sizeof(uaddr);
3003 addr = (struct sockaddr *)&uaddr;
3004 } else
3005#endif
3006 {
3007 len = sizeof(saddr);
3008 addr = (struct sockaddr *)&saddr;
3009 }
40ff6d7e 3010 fd = qemu_accept(s->listen_fd, addr, &len);
6f97dba0 3011 if (fd < 0 && errno != EINTR) {
79f20075 3012 s->listen_tag = 0;
2ea5a7af 3013 return FALSE;
6f97dba0
AL		 3014 } else if (fd >= 0) {
3015 if (s->do_telnetopt)
3016 tcp_chr_telnet_init(fd);
3017 break;
3018 }
3019 }
13661089
DB		 3020 if (tcp_chr_add_client(chr, fd) < 0)
3021 close(fd);
2ea5a7af
AL		 3022
3023 return TRUE;
6f97dba0
AL		 3024}
3025
3026static void tcp_chr_close(CharDriverState *chr)
3027{
3028 TCPCharDriver *s = chr->opaque;
c76bf6bb 3029 int i;
cfb429cb 3030
5dd1f02b
CM		 3031 if (s->reconnect_timer) {
3032 g_source_remove(s->reconnect_timer);
3033 s->reconnect_timer = 0;
3034 }
cfb429cb 3035 qapi_free_SocketAddress(s->addr);
819f56b7 3036 if (s->fd >= 0) {
26da70c7 3037 remove_fd_in_watch(chr);
2ea5a7af
AL		 3038 if (s->chan) {
3039 g_io_channel_unref(s->chan);
3040 }
6f97dba0 3041 closesocket(s->fd);
819f56b7
AL		 3042 }
3043 if (s->listen_fd >= 0) {
2ea5a7af
AL		 3044 if (s->listen_tag) {
3045 g_source_remove(s->listen_tag);
910b6368 3046 s->listen_tag = 0;
2ea5a7af
AL		 3047 }
3048 if (s->listen_chan) {
3049 g_io_channel_unref(s->listen_chan);
3050 }
6f97dba0 3051 closesocket(s->listen_fd);
819f56b7 3052 }
c76bf6bb
NN		 3053 if (s->read_msgfds_num) {
3054 for (i = 0; i < s->read_msgfds_num; i++) {
3055 close(s->read_msgfds[i]);
3056 }
3057 g_free(s->read_msgfds);
3058 }
d39aac7a
NN		 3059 if (s->write_msgfds_num) {
3060 g_free(s->write_msgfds);
3061 }
7267c094 3062 g_free(s);
a425d23f 3063 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 3064}
3065
16cc4ffe 3066static void qemu_chr_finish_socket_connection(CharDriverState *chr, int fd)
6f97dba0 3067{
43ded1a0 3068 TCPCharDriver *s = chr->opaque;
f6bd5d6e 3069
cfb429cb 3070 if (s->is_listen) {
f6bd5d6e 3071 s->listen_fd = fd;
2ea5a7af 3072 s->listen_chan = io_channel_from_socket(s->listen_fd);
43ded1a0
CM		 3073 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN,
3074 tcp_chr_accept, chr);
f6bd5d6e
GH		 3075 } else {
3076 s->connected = 1;
3077 s->fd = fd;
3078 socket_set_nodelay(fd);
2ea5a7af 3079 s->chan = io_channel_from_socket(s->fd);
f6bd5d6e
GH		 3080 tcp_chr_connect(chr);
3081 }
43ded1a0
CM		 3082}
3083
51795029 3084static void qemu_chr_socket_connected(int fd, Error *err, void *opaque)
5dd1f02b
CM		 3085{
3086 CharDriverState *chr = opaque;
5008e5b7 3087 TCPCharDriver *s = chr->opaque;
5dd1f02b
CM		 3088
3089 if (fd < 0) {
5008e5b7 3090 check_report_connect_error(chr, err);
5dd1f02b
CM		 3091 return;
3092 }
3093
5008e5b7 3094 s->connect_err_reported = false;
5dd1f02b
CM		 3095 qemu_chr_finish_socket_connection(chr, fd);
3096}
3097
cfb429cb 3098static bool qemu_chr_open_socket_fd(CharDriverState *chr, Error **errp)
43ded1a0 3099{
cfb429cb 3100 TCPCharDriver *s = chr->opaque;
43ded1a0
CM		 3101 int fd;
3102
cfb429cb
CM		 3103 if (s->is_listen) {
3104 fd = socket_listen(s->addr, errp);
5dd1f02b
CM		 3105 } else if (s->reconnect_time) {
3106 fd = socket_connect(s->addr, errp, qemu_chr_socket_connected, chr);
3107 return fd >= 0;
3108 } else {
cfb429cb 3109 fd = socket_connect(s->addr, errp, NULL, NULL);
f6bd5d6e 3110 }
43ded1a0
CM		 3111 if (fd < 0) {
3112 return false;
3113 }
3114
16cc4ffe
CM		 3115 qemu_chr_finish_socket_connection(chr, fd);
3116 return true;
f6bd5d6e
GH		 3117}
3118
51767e7c 3119/*********************************************************/
3949e594 3120/* Ring buffer chardev */
51767e7c
LL		 3121
3122typedef struct {
3123 size_t size;
3124 size_t prod;
3125 size_t cons;
3126 uint8_t *cbuf;
3949e594 3127} RingBufCharDriver;
51767e7c 3128
3949e594 3129static size_t ringbuf_count(const CharDriverState *chr)
51767e7c 3130{
3949e594 3131 const RingBufCharDriver *d = chr->opaque;
51767e7c 3132
5c230105 3133 return d->prod - d->cons;
51767e7c
LL		 3134}
3135
9005b2a7 3136/* Called with chr_write_lock held. */
3949e594 3137static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
51767e7c 3138{
3949e594 3139 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3140 int i;
3141
3142 if (!buf || (len < 0)) {
3143 return -1;
3144 }
3145
3146 for (i = 0; i < len; i++ ) {
5c230105
MA		 3147 d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
3148 if (d->prod - d->cons > d->size) {
51767e7c
LL		 3149 d->cons = d->prod - d->size;
3150 }
3151 }
3152
3153 return 0;
3154}
3155
3949e594 3156static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len)
51767e7c 3157{
3949e594 3158 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3159 int i;
3160
9005b2a7 3161 qemu_mutex_lock(&chr->chr_write_lock);
5c230105
MA		 3162 for (i = 0; i < len && d->cons != d->prod; i++) {
3163 buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
51767e7c 3164 }
9005b2a7 3165 qemu_mutex_unlock(&chr->chr_write_lock);
51767e7c
LL		 3166
3167 return i;
3168}
3169
3949e594 3170static void ringbuf_chr_close(struct CharDriverState *chr)
51767e7c 3171{
3949e594 3172 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 3173
3174 g_free(d->cbuf);
3175 g_free(d);
3176 chr->opaque = NULL;
3177}
3178
4f57378f
MA		 3179static CharDriverState *qemu_chr_open_ringbuf(ChardevRingbuf *opts,
3180 Error **errp)
51767e7c
LL		 3181{
3182 CharDriverState *chr;
3949e594 3183 RingBufCharDriver *d;
51767e7c 3184
db39fcf1 3185 chr = qemu_chr_alloc();
51767e7c
LL		 3186 d = g_malloc(sizeof(*d));
3187
1da48c65 3188 d->size = opts->has_size ? opts->size : 65536;
51767e7c
LL		 3189
3190 /* The size must be power of 2 */
3191 if (d->size & (d->size - 1)) {
4f57378f 3192 error_setg(errp, "size of ringbuf chardev must be power of two");
51767e7c
LL		 3193 goto fail;
3194 }
3195
3196 d->prod = 0;
3197 d->cons = 0;
3198 d->cbuf = g_malloc0(d->size);
3199
3200 chr->opaque = d;
3949e594
MA		 3201 chr->chr_write = ringbuf_chr_write;
3202 chr->chr_close = ringbuf_chr_close;
51767e7c
LL		 3203
3204 return chr;
3205
3206fail:
3207 g_free(d);
3208 g_free(chr);
3209 return NULL;
3210}
3211
8e597779 3212bool chr_is_ringbuf(const CharDriverState *chr)
1f590cf9 3213{
3949e594 3214 return chr->chr_write == ringbuf_chr_write;
1f590cf9
LL		 3215}
3216
3949e594 3217void qmp_ringbuf_write(const char *device, const char *data,
82e59a67 3218 bool has_format, enum DataFormat format,
1f590cf9
LL		 3219 Error **errp)
3220{
3221 CharDriverState *chr;
c4f331b6 3222 const uint8_t *write_data;
1f590cf9 3223 int ret;
3d1bba20 3224 gsize write_count;
1f590cf9
LL		 3225
3226 chr = qemu_chr_find(device);
3227 if (!chr) {
1a69278e 3228 error_setg(errp, "Device '%s' not found", device);
1f590cf9
LL		 3229 return;
3230 }
3231
3949e594
MA		 3232 if (!chr_is_ringbuf(chr)) {
3233 error_setg(errp,"%s is not a ringbuf device", device);
1f590cf9
LL		 3234 return;
3235 }
3236
1f590cf9
LL		 3237 if (has_format && (format == DATA_FORMAT_BASE64)) {
3238 write_data = g_base64_decode(data, &write_count);
3239 } else {
3240 write_data = (uint8_t *)data;
82e59a67 3241 write_count = strlen(data);
1f590cf9
LL		 3242 }
3243
3949e594 3244 ret = ringbuf_chr_write(chr, write_data, write_count);
1f590cf9 3245
13289fb5
MA		 3246 if (write_data != (uint8_t *)data) {
3247 g_free((void *)write_data);
3248 }
3249
1f590cf9
LL		 3250 if (ret < 0) {
3251 error_setg(errp, "Failed to write to device %s", device);
3252 return;
3253 }
3254}
3255
3949e594 3256char *qmp_ringbuf_read(const char *device, int64_t size,
3ab651fc
MA		 3257 bool has_format, enum DataFormat format,
3258 Error **errp)
49b6d722
LL		 3259{
3260 CharDriverState *chr;
c4f331b6 3261 uint8_t *read_data;
49b6d722 3262 size_t count;
3ab651fc 3263 char *data;
49b6d722
LL		 3264
3265 chr = qemu_chr_find(device);
3266 if (!chr) {
1a69278e 3267 error_setg(errp, "Device '%s' not found", device);
49b6d722
LL		 3268 return NULL;
3269 }
3270
3949e594
MA		 3271 if (!chr_is_ringbuf(chr)) {
3272 error_setg(errp,"%s is not a ringbuf device", device);
49b6d722
LL		 3273 return NULL;
3274 }
3275
3276 if (size <= 0) {
3277 error_setg(errp, "size must be greater than zero");
3278 return NULL;
3279 }
3280
3949e594 3281 count = ringbuf_count(chr);
49b6d722 3282 size = size > count ? count : size;
44f3bcd2 3283 read_data = g_malloc(size + 1);
49b6d722 3284
3949e594 3285 ringbuf_chr_read(chr, read_data, size);
49b6d722
LL		 3286
3287 if (has_format && (format == DATA_FORMAT_BASE64)) {
3ab651fc 3288 data = g_base64_encode(read_data, size);
13289fb5 3289 g_free(read_data);
49b6d722 3290 } else {
3949e594
MA		 3291 /*
3292 * FIXME should read only complete, valid UTF-8 characters up
3293 * to @size bytes. Invalid sequences should be replaced by a
3294 * suitable replacement character. Except when (and only
3295 * when) ring buffer lost characters since last read, initial
3296 * continuation characters should be dropped.
3297 */
44f3bcd2 3298 read_data[size] = 0;
3ab651fc 3299 data = (char *)read_data;
49b6d722
LL		 3300 }
3301
3ab651fc 3302 return data;
49b6d722
LL		 3303}
3304
33521634 3305QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
191bc01b 3306{
6ea314d9 3307 char host[65], port[33], width[8], height[8];
aeb2c47a 3308 int pos;
7d31544f 3309 const char *p;
191bc01b 3310 QemuOpts *opts;
8be7e7e4 3311 Error *local_err = NULL;
191bc01b 3312
8be7e7e4 3313 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
84d18f06 3314 if (local_err) {
33394884 3315 error_report_err(local_err);
191bc01b 3316 return NULL;
8be7e7e4 3317 }
191bc01b 3318
7591c5c1
GH		 3319 if (strstart(filename, "mon:", &p)) {
3320 filename = p;
f43e47db 3321 qemu_opt_set(opts, "mux", "on", &error_abort);
02c4bdf1
PB		 3322 if (strcmp(filename, "stdio") == 0) {
3323 /* Monitor is muxed to stdio: do not exit on Ctrl+C by default
3324 * but pass it to the guest. Handle this only for compat syntax,
3325 * for -chardev syntax we have special option for this.
3326 * This is what -nographic did, redirecting+muxing serial+monitor
3327 * to stdio causing Ctrl+C to be passed to guest. */
f43e47db 3328 qemu_opt_set(opts, "signal", "off", &error_abort);
02c4bdf1 3329 }
7591c5c1
GH		 3330 }
3331
f0457e8d
GH		 3332 if (strcmp(filename, "null") == 0 ||
3333 strcmp(filename, "pty") == 0 ||
3334 strcmp(filename, "msmouse") == 0 ||
dc1c21e6 3335 strcmp(filename, "braille") == 0 ||
5692399f 3336 strcmp(filename, "testdev") == 0 ||
f0457e8d 3337 strcmp(filename, "stdio") == 0) {
f43e47db 3338 qemu_opt_set(opts, "backend", filename, &error_abort);
191bc01b
GH		 3339 return opts;
3340 }
6ea314d9 3341 if (strstart(filename, "vc", &p)) {
f43e47db 3342 qemu_opt_set(opts, "backend", "vc", &error_abort);
6ea314d9 3343 if (*p == ':') {
49aa4058 3344 if (sscanf(p+1, "%7[0-9]x%7[0-9]", width, height) == 2) {
6ea314d9 3345 /* pixels */
f43e47db
MA		 3346 qemu_opt_set(opts, "width", width, &error_abort);
3347 qemu_opt_set(opts, "height", height, &error_abort);
49aa4058 3348 } else if (sscanf(p+1, "%7[0-9]Cx%7[0-9]C", width, height) == 2) {
6ea314d9 3349 /* chars */
f43e47db
MA		 3350 qemu_opt_set(opts, "cols", width, &error_abort);
3351 qemu_opt_set(opts, "rows", height, &error_abort);
6ea314d9
GH		 3352 } else {
3353 goto fail;
3354 }
3355 }
3356 return opts;
3357 }
d6c983cd 3358 if (strcmp(filename, "con:") == 0) {
f43e47db 3359 qemu_opt_set(opts, "backend", "console", &error_abort);
d6c983cd
GH		 3360 return opts;
3361 }
48b76496 3362 if (strstart(filename, "COM", NULL)) {
f43e47db
MA		 3363 qemu_opt_set(opts, "backend", "serial", &error_abort);
3364 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3365 return opts;
3366 }
7d31544f 3367 if (strstart(filename, "file:", &p)) {
f43e47db
MA		 3368 qemu_opt_set(opts, "backend", "file", &error_abort);
3369 qemu_opt_set(opts, "path", p, &error_abort);
7d31544f
GH		 3370 return opts;
3371 }
3372 if (strstart(filename, "pipe:", &p)) {
f43e47db
MA		 3373 qemu_opt_set(opts, "backend", "pipe", &error_abort);
3374 qemu_opt_set(opts, "path", p, &error_abort);
7d31544f
GH		 3375 return opts;
3376 }
aeb2c47a
GH		 3377 if (strstart(filename, "tcp:", &p) ||
3378 strstart(filename, "telnet:", &p)) {
3379 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3380 host[0] = 0;
3381 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
3382 goto fail;
3383 }
f43e47db
MA		 3384 qemu_opt_set(opts, "backend", "socket", &error_abort);
3385 qemu_opt_set(opts, "host", host, &error_abort);
3386 qemu_opt_set(opts, "port", port, &error_abort);
aeb2c47a 3387 if (p[pos] == ',') {
dc523cd3
MA		 3388 qemu_opts_do_parse(opts, p+pos+1, NULL, &local_err);
3389 if (local_err) {
3390 error_report_err(local_err);
aeb2c47a 3391 goto fail;
dc523cd3 3392 }
aeb2c47a
GH		 3393 }
3394 if (strstart(filename, "telnet:", &p))
f43e47db 3395 qemu_opt_set(opts, "telnet", "on", &error_abort);
aeb2c47a
GH		 3396 return opts;
3397 }
7e1b35b4 3398 if (strstart(filename, "udp:", &p)) {
f43e47db 3399 qemu_opt_set(opts, "backend", "udp", &error_abort);
7e1b35b4
GH		 3400 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
3401 host[0] = 0;
39324ca4 3402 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
7e1b35b4
GH		 3403 goto fail;
3404 }
3405 }
f43e47db
MA		 3406 qemu_opt_set(opts, "host", host, &error_abort);
3407 qemu_opt_set(opts, "port", port, &error_abort);
7e1b35b4
GH		 3408 if (p[pos] == '@') {
3409 p += pos + 1;
3410 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3411 host[0] = 0;
3412 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
7e1b35b4
GH		 3413 goto fail;
3414 }
3415 }
f43e47db
MA		 3416 qemu_opt_set(opts, "localaddr", host, &error_abort);
3417 qemu_opt_set(opts, "localport", port, &error_abort);
7e1b35b4
GH		 3418 }
3419 return opts;
3420 }
aeb2c47a 3421 if (strstart(filename, "unix:", &p)) {
f43e47db 3422 qemu_opt_set(opts, "backend", "socket", &error_abort);
dc523cd3
MA		 3423 qemu_opts_do_parse(opts, p, "path", &local_err);
3424 if (local_err) {
3425 error_report_err(local_err);
aeb2c47a 3426 goto fail;
dc523cd3 3427 }
aeb2c47a
GH		 3428 return opts;
3429 }
48b76496
GH		 3430 if (strstart(filename, "/dev/parport", NULL) ||
3431 strstart(filename, "/dev/ppi", NULL)) {
f43e47db
MA		 3432 qemu_opt_set(opts, "backend", "parport", &error_abort);
3433 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3434 return opts;
3435 }
3436 if (strstart(filename, "/dev/", NULL)) {
f43e47db
MA		 3437 qemu_opt_set(opts, "backend", "tty", &error_abort);
3438 qemu_opt_set(opts, "path", filename, &error_abort);
48b76496
GH		 3439 return opts;
3440 }
191bc01b 3441
aeb2c47a 3442fail:
191bc01b
GH		 3443 qemu_opts_del(opts);
3444 return NULL;
3445}
3446
846e2e49
GH		 3447static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
3448 Error **errp)
3449{
3450 const char *path = qemu_opt_get(opts, "path");
3451
3452 if (path == NULL) {
3453 error_setg(errp, "chardev: file: no filename given");
3454 return;
3455 }
3456 backend->file = g_new0(ChardevFile, 1);
3457 backend->file->out = g_strdup(path);
3458}
3459
7c358031
GH		 3460static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
3461 Error **errp)
3462{
3463 backend->stdio = g_new0(ChardevStdio, 1);
3464 backend->stdio->has_signal = true;
02c4bdf1 3465 backend->stdio->signal = qemu_opt_get_bool(opts, "signal", true);
7c358031
GH		 3466}
3467
0f1cb51d
GH		 3468static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
3469 Error **errp)
3470{
3471 const char *device = qemu_opt_get(opts, "path");
3472
3473 if (device == NULL) {
3474 error_setg(errp, "chardev: serial/tty: no device path given");
3475 return;
3476 }
3477 backend->serial = g_new0(ChardevHostdev, 1);
3478 backend->serial->device = g_strdup(device);
3479}
3480
dc375097
GH		 3481static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
3482 Error **errp)
3483{
3484 const char *device = qemu_opt_get(opts, "path");
3485
3486 if (device == NULL) {
3487 error_setg(errp, "chardev: parallel: no device path given");
3488 return;
3489 }
3490 backend->parallel = g_new0(ChardevHostdev, 1);
3491 backend->parallel->device = g_strdup(device);
3492}
3493
548cbb36
GH		 3494static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
3495 Error **errp)
3496{
3497 const char *device = qemu_opt_get(opts, "path");
3498
3499 if (device == NULL) {
3500 error_setg(errp, "chardev: pipe: no device path given");
3501 return;
3502 }
3503 backend->pipe = g_new0(ChardevHostdev, 1);
3504 backend->pipe->device = g_strdup(device);
3505}
3506
4f57378f
MA		 3507static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
3508 Error **errp)
1da48c65
GH		 3509{
3510 int val;
3511
3a1da42e 3512 backend->ringbuf = g_new0(ChardevRingbuf, 1);
1da48c65 3513
0f953051 3514 val = qemu_opt_get_size(opts, "size", 0);
1da48c65 3515 if (val != 0) {
3a1da42e
MA		 3516 backend->ringbuf->has_size = true;
3517 backend->ringbuf->size = val;
1da48c65
GH		 3518 }
3519}
3520
bb6fb7c0
GH		 3521static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend,
3522 Error **errp)
3523{
3524 const char *chardev = qemu_opt_get(opts, "chardev");
3525
3526 if (chardev == NULL) {
3527 error_setg(errp, "chardev: mux: no chardev given");
3528 return;
3529 }
3530 backend->mux = g_new0(ChardevMux, 1);
3531 backend->mux->chardev = g_strdup(chardev);
3532}
3533
dafd325d
PM		 3534static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend,
3535 Error **errp)
3536{
3537 bool is_listen = qemu_opt_get_bool(opts, "server", false);
3538 bool is_waitconnect = is_listen && qemu_opt_get_bool(opts, "wait", true);
3539 bool is_telnet = qemu_opt_get_bool(opts, "telnet", false);
3540 bool do_nodelay = !qemu_opt_get_bool(opts, "delay", true);
5dd1f02b 3541 int64_t reconnect = qemu_opt_get_number(opts, "reconnect", 0);
dafd325d
PM		 3542 const char *path = qemu_opt_get(opts, "path");
3543 const char *host = qemu_opt_get(opts, "host");
3544 const char *port = qemu_opt_get(opts, "port");
3545 SocketAddress *addr;
3546
3547 if (!path) {
3548 if (!host) {
3549 error_setg(errp, "chardev: socket: no host given");
3550 return;
3551 }
3552 if (!port) {
3553 error_setg(errp, "chardev: socket: no port given");
3554 return;
3555 }
3556 }
3557
3558 backend->socket = g_new0(ChardevSocket, 1);
3559
3560 backend->socket->has_nodelay = true;
3561 backend->socket->nodelay = do_nodelay;
3562 backend->socket->has_server = true;
3563 backend->socket->server = is_listen;
3564 backend->socket->has_telnet = true;
3565 backend->socket->telnet = is_telnet;
3566 backend->socket->has_wait = true;
3567 backend->socket->wait = is_waitconnect;
5dd1f02b
CM		 3568 backend->socket->has_reconnect = true;
3569 backend->socket->reconnect = reconnect;
dafd325d
PM		 3570
3571 addr = g_new0(SocketAddress, 1);
3572 if (path) {
3573 addr->kind = SOCKET_ADDRESS_KIND_UNIX;
3574 addr->q_unix = g_new0(UnixSocketAddress, 1);
3575 addr->q_unix->path = g_strdup(path);
3576 } else {
3577 addr->kind = SOCKET_ADDRESS_KIND_INET;
3578 addr->inet = g_new0(InetSocketAddress, 1);
3579 addr->inet->host = g_strdup(host);
3580 addr->inet->port = g_strdup(port);
3581 addr->inet->has_to = qemu_opt_get(opts, "to");
3582 addr->inet->to = qemu_opt_get_number(opts, "to", 0);
3583 addr->inet->has_ipv4 = qemu_opt_get(opts, "ipv4");
3584 addr->inet->ipv4 = qemu_opt_get_bool(opts, "ipv4", 0);
3585 addr->inet->has_ipv6 = qemu_opt_get(opts, "ipv6");
3586 addr->inet->ipv6 = qemu_opt_get_bool(opts, "ipv6", 0);
3587 }
3588 backend->socket->addr = addr;
3589}
3590
90a14bfe
PM		 3591static void qemu_chr_parse_udp(QemuOpts *opts, ChardevBackend *backend,
3592 Error **errp)
3593{
3594 const char *host = qemu_opt_get(opts, "host");
3595 const char *port = qemu_opt_get(opts, "port");
3596 const char *localaddr = qemu_opt_get(opts, "localaddr");
3597 const char *localport = qemu_opt_get(opts, "localport");
3598 bool has_local = false;
3599 SocketAddress *addr;
3600
3601 if (host == NULL || strlen(host) == 0) {
3602 host = "localhost";
3603 }
3604 if (port == NULL || strlen(port) == 0) {
3605 error_setg(errp, "chardev: udp: remote port not specified");
3606 return;
3607 }
3608 if (localport == NULL || strlen(localport) == 0) {
3609 localport = "0";
3610 } else {
3611 has_local = true;
3612 }
3613 if (localaddr == NULL || strlen(localaddr) == 0) {
3614 localaddr = "";
3615 } else {
3616 has_local = true;
3617 }
3618
3619 backend->udp = g_new0(ChardevUdp, 1);
3620
3621 addr = g_new0(SocketAddress, 1);
3622 addr->kind = SOCKET_ADDRESS_KIND_INET;
3623 addr->inet = g_new0(InetSocketAddress, 1);
3624 addr->inet->host = g_strdup(host);
3625 addr->inet->port = g_strdup(port);
3626 addr->inet->has_ipv4 = qemu_opt_get(opts, "ipv4");
3627 addr->inet->ipv4 = qemu_opt_get_bool(opts, "ipv4", 0);
3628 addr->inet->has_ipv6 = qemu_opt_get(opts, "ipv6");
3629 addr->inet->ipv6 = qemu_opt_get_bool(opts, "ipv6", 0);
3630 backend->udp->remote = addr;
3631
3632 if (has_local) {
3633 backend->udp->has_local = true;
3634 addr = g_new0(SocketAddress, 1);
3635 addr->kind = SOCKET_ADDRESS_KIND_INET;
3636 addr->inet = g_new0(InetSocketAddress, 1);
3637 addr->inet->host = g_strdup(localaddr);
3638 addr->inet->port = g_strdup(localport);
3639 backend->udp->local = addr;
3640 }
3641}
3642
d654f34e 3643typedef struct CharDriver {
191bc01b 3644 const char *name;
99aec012 3645 ChardevBackendKind kind;
2c5f4882 3646 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
d654f34e
AL		 3647} CharDriver;
3648
3649static GSList *backends;
3650
e4d50d47 3651void register_char_driver(const char *name, ChardevBackendKind kind,
2c5f4882
GH		 3652 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp))
3653{
3654 CharDriver *s;
3655
3656 s = g_malloc0(sizeof(*s));
3657 s->name = g_strdup(name);
3658 s->kind = kind;
3659 s->parse = parse;
3660
3661 backends = g_slist_append(backends, s);
3662}
3663
f69554b9 3664CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
bd2d80b2
GH		 3665 void (*init)(struct CharDriverState *s),
3666 Error **errp)
191bc01b 3667{
0aff637e 3668 Error *local_err = NULL;
d654f34e 3669 CharDriver *cd;
191bc01b 3670 CharDriverState *chr;
d654f34e 3671 GSList *i;
a61ae7f8
PM		 3672 ChardevReturn *ret = NULL;
3673 ChardevBackend *backend;
3674 const char *id = qemu_opts_id(opts);
3675 char *bid = NULL;
191bc01b 3676
a61ae7f8 3677 if (id == NULL) {
312fd5f2 3678 error_setg(errp, "chardev: no id specified");
2274ae9d 3679 goto err;
191bc01b
GH		 3680 }
3681
1bbd185f 3682 if (qemu_opt_get(opts, "backend") == NULL) {
312fd5f2 3683 error_setg(errp, "chardev: \"%s\" missing backend",
bd2d80b2 3684 qemu_opts_id(opts));
2274ae9d 3685 goto err;
1bbd185f 3686 }
d654f34e
AL		 3687 for (i = backends; i; i = i->next) {
3688 cd = i->data;
3689
3690 if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) {
191bc01b 3691 break;
d654f34e 3692 }
191bc01b 3693 }
d654f34e 3694 if (i == NULL) {
312fd5f2 3695 error_setg(errp, "chardev: backend \"%s\" not found",
bd2d80b2 3696 qemu_opt_get(opts, "backend"));
e668287d 3697 goto err;
191bc01b
GH		 3698 }
3699
a61ae7f8 3700 backend = g_new0(ChardevBackend, 1);
edb2fb3c 3701
a61ae7f8
PM		 3702 if (qemu_opt_get_bool(opts, "mux", 0)) {
3703 bid = g_strdup_printf("%s-base", id);
3704 }
2c5f4882 3705
a61ae7f8
PM		 3706 chr = NULL;
3707 backend->kind = cd->kind;
3708 if (cd->parse) {
3709 cd->parse(opts, backend, &local_err);
3710 if (local_err) {
3711 error_propagate(errp, local_err);
2c5f4882
GH		 3712 goto qapi_out;
3713 }
2c5f4882 3714 }
a61ae7f8
PM		 3715 ret = qmp_chardev_add(bid ? bid : id, backend, errp);
3716 if (!ret) {
3717 goto qapi_out;
191bc01b
GH		 3718 }
3719
a61ae7f8
PM		 3720 if (bid) {
3721 qapi_free_ChardevBackend(backend);
3722 qapi_free_ChardevReturn(ret);
3723 backend = g_new0(ChardevBackend, 1);
3724 backend->mux = g_new0(ChardevMux, 1);
3725 backend->kind = CHARDEV_BACKEND_KIND_MUX;
3726 backend->mux->chardev = g_strdup(bid);
3727 ret = qmp_chardev_add(id, backend, errp);
3728 if (!ret) {
3729 chr = qemu_chr_find(bid);
3730 qemu_chr_delete(chr);
3731 chr = NULL;
3732 goto qapi_out;
3733 }
bd5c51ee 3734 }
7591c5c1 3735
a61ae7f8 3736 chr = qemu_chr_find(id);
2274ae9d 3737 chr->opts = opts;
a61ae7f8
PM		 3738
3739qapi_out:
3740 qapi_free_ChardevBackend(backend);
3741 qapi_free_ChardevReturn(ret);
3742 g_free(bid);
191bc01b 3743 return chr;
2274ae9d
GH		 3744
3745err:
3746 qemu_opts_del(opts);
3747 return NULL;
191bc01b
GH		 3748}
3749
27143a44 3750CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
6f97dba0
AL		 3751{
3752 const char *p;
3753 CharDriverState *chr;
191bc01b 3754 QemuOpts *opts;
bd2d80b2 3755 Error *err = NULL;
191bc01b 3756
c845f401
GH		 3757 if (strstart(filename, "chardev:", &p)) {
3758 return qemu_chr_find(p);
3759 }
3760
191bc01b 3761 opts = qemu_chr_parse_compat(label, filename);
7e1b35b4
GH		 3762 if (!opts)
3763 return NULL;
6f97dba0 3764
bd2d80b2 3765 chr = qemu_chr_new_from_opts(opts, init, &err);
84d18f06 3766 if (err) {
565f65d2 3767 error_report_err(err);
bd2d80b2 3768 }
7e1b35b4 3769 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
456d6069 3770 qemu_chr_fe_claim_no_fail(chr);
7e1b35b4 3771 monitor_init(chr, MONITOR_USE_READLINE);
6f97dba0
AL		 3772 }
3773 return chr;
3774}
3775
15f31519 3776void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo)
c48855e1
PB		 3777{
3778 if (chr->chr_set_echo) {
3779 chr->chr_set_echo(chr, echo);
3780 }
3781}
3782
8e25daa8 3783void qemu_chr_fe_set_open(struct CharDriverState *chr, int fe_open)
7c32c4fe 3784{
8e25daa8 3785 if (chr->fe_open == fe_open) {
c0c4bd2c
HG		 3786 return;
3787 }
8e25daa8 3788 chr->fe_open = fe_open;
574b711a
HG		 3789 if (chr->chr_set_fe_open) {
3790 chr->chr_set_fe_open(chr, fe_open);
7c32c4fe
HG		 3791 }
3792}
3793
d61b0c9a
MAL		 3794void qemu_chr_fe_event(struct CharDriverState *chr, int event)
3795{
3796 if (chr->chr_fe_event) {
3797 chr->chr_fe_event(chr, event);
3798 }
3799}
3800
2c8a5942
KW		 3801int qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond,
3802 GIOFunc func, void *user_data)
23673ca7
AL		 3803{
3804 GSource *src;
3805 guint tag;
3806
3807 if (s->chr_add_watch == NULL) {
3808 return -ENOSYS;
3809 }
3810
3811 src = s->chr_add_watch(s, cond);
62c339c5
PB		 3812 if (!src) {
3813 return -EINVAL;
3814 }
3815
23673ca7
AL		 3816 g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
3817 tag = g_source_attach(src, NULL);
3818 g_source_unref(src);
3819
3820 return tag;
3821}
3822
44c473de
HG		 3823int qemu_chr_fe_claim(CharDriverState *s)
3824{
3825 if (s->avail_connections < 1) {
3826 return -1;
3827 }
3828 s->avail_connections--;
3829 return 0;
3830}
3831
3832void qemu_chr_fe_claim_no_fail(CharDriverState *s)
3833{
3834 if (qemu_chr_fe_claim(s) != 0) {
3835 fprintf(stderr, "%s: error chardev \"%s\" already used\n",
3836 __func__, s->label);
3837 exit(1);
3838 }
3839}
3840
3841void qemu_chr_fe_release(CharDriverState *s)
3842{
3843 s->avail_connections++;
3844}
3845
70f24fb6 3846void qemu_chr_delete(CharDriverState *chr)
6f97dba0 3847{
72cf2d4f 3848 QTAILQ_REMOVE(&chardevs, chr, next);
2274ae9d 3849 if (chr->chr_close) {
6f97dba0 3850 chr->chr_close(chr);
2274ae9d 3851 }
7267c094
AL		 3852 g_free(chr->filename);
3853 g_free(chr->label);
4ad60880 3854 qemu_opts_del(chr->opts);
7267c094 3855 g_free(chr);
6f97dba0
AL		 3856}
3857
c5a415a0 3858ChardevInfoList *qmp_query_chardev(Error **errp)
6f97dba0 3859{
c5a415a0 3860 ChardevInfoList *chr_list = NULL;
6f97dba0
AL		 3861 CharDriverState *chr;
3862
72cf2d4f 3863 QTAILQ_FOREACH(chr, &chardevs, next) {
c5a415a0
LC		 3864 ChardevInfoList *info = g_malloc0(sizeof(*info));
3865 info->value = g_malloc0(sizeof(*info->value));
3866 info->value->label = g_strdup(chr->label);
3867 info->value->filename = g_strdup(chr->filename);
32a97ea1 3868 info->value->frontend_open = chr->fe_open;
c5a415a0
LC		 3869
3870 info->next = chr_list;
3871 chr_list = info;
6f97dba0 3872 }
588b3832 3873
c5a415a0 3874 return chr_list;
6f97dba0 3875}
c845f401 3876
77d1c3c6
MK		 3877ChardevBackendInfoList *qmp_query_chardev_backends(Error **errp)
3878{
3879 ChardevBackendInfoList *backend_list = NULL;
3880 CharDriver *c = NULL;
3881 GSList *i = NULL;
3882
3883 for (i = backends; i; i = i->next) {
3884 ChardevBackendInfoList *info = g_malloc0(sizeof(*info));
3885 c = i->data;
3886 info->value = g_malloc0(sizeof(*info->value));
3887 info->value->name = g_strdup(c->name);
3888
3889 info->next = backend_list;
3890 backend_list = info;
3891 }
3892
3893 return backend_list;
3894}
3895
c845f401
GH		 3896CharDriverState *qemu_chr_find(const char *name)
3897{
3898 CharDriverState *chr;
3899
72cf2d4f 3900 QTAILQ_FOREACH(chr, &chardevs, next) {
c845f401
GH		 3901 if (strcmp(chr->label, name) != 0)
3902 continue;
3903 return chr;
3904 }
3905 return NULL;
3906}
0beb4942
AL		 3907
3908/* Get a character (serial) device interface. */
3909CharDriverState *qemu_char_get_next_serial(void)
3910{
3911 static int next_serial;
456d6069 3912 CharDriverState *chr;
0beb4942
AL		 3913
3914 /* FIXME: This function needs to go away: use chardev properties! */
456d6069
HG		 3915
3916 while (next_serial < MAX_SERIAL_PORTS && serial_hds[next_serial]) {
3917 chr = serial_hds[next_serial++];
3918 qemu_chr_fe_claim_no_fail(chr);
3919 return chr;
3920 }
3921 return NULL;
0beb4942
AL		 3922}
3923
4d454574
PB		 3924QemuOptsList qemu_chardev_opts = {
3925 .name = "chardev",
3926 .implied_opt_name = "backend",
3927 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
3928 .desc = {
3929 {
3930 .name = "backend",
3931 .type = QEMU_OPT_STRING,
3932 },{
3933 .name = "path",
3934 .type = QEMU_OPT_STRING,
3935 },{
3936 .name = "host",
3937 .type = QEMU_OPT_STRING,
3938 },{
3939 .name = "port",
3940 .type = QEMU_OPT_STRING,
3941 },{
3942 .name = "localaddr",
3943 .type = QEMU_OPT_STRING,
3944 },{
3945 .name = "localport",
3946 .type = QEMU_OPT_STRING,
3947 },{
3948 .name = "to",
3949 .type = QEMU_OPT_NUMBER,
3950 },{
3951 .name = "ipv4",
3952 .type = QEMU_OPT_BOOL,
3953 },{
3954 .name = "ipv6",
3955 .type = QEMU_OPT_BOOL,
3956 },{
3957 .name = "wait",
3958 .type = QEMU_OPT_BOOL,
3959 },{
3960 .name = "server",
3961 .type = QEMU_OPT_BOOL,
3962 },{
3963 .name = "delay",
3964 .type = QEMU_OPT_BOOL,
5dd1f02b
CM		 3965 },{
3966 .name = "reconnect",
3967 .type = QEMU_OPT_NUMBER,
4d454574
PB		 3968 },{
3969 .name = "telnet",
3970 .type = QEMU_OPT_BOOL,
3971 },{
3972 .name = "width",
3973 .type = QEMU_OPT_NUMBER,
3974 },{
3975 .name = "height",
3976 .type = QEMU_OPT_NUMBER,
3977 },{
3978 .name = "cols",
3979 .type = QEMU_OPT_NUMBER,
3980 },{
3981 .name = "rows",
3982 .type = QEMU_OPT_NUMBER,
3983 },{
3984 .name = "mux",
3985 .type = QEMU_OPT_BOOL,
3986 },{
3987 .name = "signal",
3988 .type = QEMU_OPT_BOOL,
3989 },{
3990 .name = "name",
3991 .type = QEMU_OPT_STRING,
3992 },{
3993 .name = "debug",
3994 .type = QEMU_OPT_NUMBER,
51767e7c 3995 },{
3949e594 3996 .name = "size",
de1cc36e 3997 .type = QEMU_OPT_SIZE,
bb6fb7c0
GH		 3998 },{
3999 .name = "chardev",
4000 .type = QEMU_OPT_STRING,
4d454574
PB		 4001 },
4002 { /* end of list */ }
4003 },
4004};
f1a1a356 4005
ffbdbe59
GH		 4006#ifdef _WIN32
4007
4008static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
4009{
4010 HANDLE out;
4011
e859eda5 4012 if (file->has_in) {
ffbdbe59
GH		 4013 error_setg(errp, "input file not supported");
4014 return NULL;
4015 }
4016
4017 out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
4018 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
4019 if (out == INVALID_HANDLE_VALUE) {
4020 error_setg(errp, "open %s failed", file->out);
4021 return NULL;
4022 }
4023 return qemu_chr_open_win_file(out);
4024}
4025
d36b2b90
MA		 4026static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
4027 Error **errp)
d59044ef 4028{
d36b2b90
MA		 4029 return qemu_chr_open_win_path(serial->device);
4030}
4031
4032static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
4033 Error **errp)
4034{
4035 error_setg(errp, "character device backend type 'parallel' not supported");
4036 return NULL;
d59044ef
GH		 4037}
4038
ffbdbe59
GH		 4039#else /* WIN32 */
4040
4041static int qmp_chardev_open_file_source(char *src, int flags,
4042 Error **errp)
4043{
4044 int fd = -1;
4045
4046 TFR(fd = qemu_open(src, flags, 0666));
4047 if (fd == -1) {
20c39760 4048 error_setg_file_open(errp, errno, src);
ffbdbe59
GH		 4049 }
4050 return fd;
4051}
4052
4053static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
4054{
5f758366 4055 int flags, in = -1, out;
ffbdbe59
GH		 4056
4057 flags = O_WRONLY | O_TRUNC | O_CREAT | O_BINARY;
4058 out = qmp_chardev_open_file_source(file->out, flags, errp);
5f758366 4059 if (out < 0) {
ffbdbe59
GH		 4060 return NULL;
4061 }
4062
e859eda5 4063 if (file->has_in) {
ffbdbe59
GH		 4064 flags = O_RDONLY;
4065 in = qmp_chardev_open_file_source(file->in, flags, errp);
5f758366 4066 if (in < 0) {
ffbdbe59
GH		 4067 qemu_close(out);
4068 return NULL;
4069 }
4070 }
4071
4072 return qemu_chr_open_fd(in, out);
4073}
4074
d36b2b90
MA		 4075static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
4076 Error **errp)
d59044ef 4077{
d59044ef 4078#ifdef HAVE_CHARDEV_TTY
d36b2b90
MA		 4079 int fd;
4080
4081 fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
5f758366 4082 if (fd < 0) {
d36b2b90 4083 return NULL;
39099991 4084 }
f9e8cacc 4085 qemu_set_nonblock(fd);
d36b2b90
MA		 4086 return qemu_chr_open_tty_fd(fd);
4087#else
4088 error_setg(errp, "character device backend type 'serial' not supported");
4089 return NULL;
88a946d3 4090#endif
d36b2b90
MA		 4091}
4092
4093static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
4094 Error **errp)
4095{
88a946d3 4096#ifdef HAVE_CHARDEV_PARPORT
d36b2b90
MA		 4097 int fd;
4098
4099 fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
5f758366 4100 if (fd < 0) {
d59044ef
GH		 4101 return NULL;
4102 }
d36b2b90
MA		 4103 return qemu_chr_open_pp_fd(fd);
4104#else
4105 error_setg(errp, "character device backend type 'parallel' not supported");
4106 return NULL;
4107#endif
d59044ef
GH		 4108}
4109
ffbdbe59
GH		 4110#endif /* WIN32 */
4111
5008e5b7
CM		 4112static void socket_try_connect(CharDriverState *chr)
4113{
4114 Error *err = NULL;
4115
4116 if (!qemu_chr_open_socket_fd(chr, &err)) {
4117 check_report_connect_error(chr, err);
4118 }
4119}
4120
5dd1f02b
CM		 4121static gboolean socket_reconnect_timeout(gpointer opaque)
4122{
4123 CharDriverState *chr = opaque;
4124 TCPCharDriver *s = chr->opaque;
5dd1f02b
CM		 4125
4126 s->reconnect_timer = 0;
4127
4128 if (chr->be_open) {
4129 return false;
4130 }
4131
5008e5b7 4132 socket_try_connect(chr);
5dd1f02b
CM		 4133
4134 return false;
4135}
4136
f6bd5d6e
GH		 4137static CharDriverState *qmp_chardev_open_socket(ChardevSocket *sock,
4138 Error **errp)
4139{
43ded1a0
CM		 4140 CharDriverState *chr;
4141 TCPCharDriver *s;
f6bd5d6e
GH		 4142 SocketAddress *addr = sock->addr;
4143 bool do_nodelay = sock->has_nodelay ? sock->nodelay : false;
4144 bool is_listen = sock->has_server ? sock->server : true;
4145 bool is_telnet = sock->has_telnet ? sock->telnet : false;
4146 bool is_waitconnect = sock->has_wait ? sock->wait : false;
5dd1f02b 4147 int64_t reconnect = sock->has_reconnect ? sock->reconnect : 0;
43ded1a0
CM		 4148
4149 chr = qemu_chr_alloc();
4150 s = g_malloc0(sizeof(TCPCharDriver));
4151
4152 s->fd = -1;
4153 s->listen_fd = -1;
4154 s->is_unix = addr->kind == SOCKET_ADDRESS_KIND_UNIX;
cfb429cb
CM		 4155 s->is_listen = is_listen;
4156 s->is_telnet = is_telnet;
43ded1a0 4157 s->do_nodelay = do_nodelay;
cfb429cb 4158 qapi_copy_SocketAddress(&s->addr, sock->addr);
43ded1a0
CM		 4159
4160 chr->opaque = s;
4161 chr->chr_write = tcp_chr_write;
4162 chr->chr_sync_read = tcp_chr_sync_read;
4163 chr->chr_close = tcp_chr_close;
4164 chr->get_msgfds = tcp_get_msgfds;
4165 chr->set_msgfds = tcp_set_msgfds;
4166 chr->chr_add_client = tcp_chr_add_client;
4167 chr->chr_add_watch = tcp_chr_add_watch;
4168 chr->chr_update_read_handler = tcp_chr_update_read_handler;
4169 /* be isn't opened until we get a connection */
4170 chr->explicit_be_open = true;
4171
4172 chr->filename = g_malloc(CHR_MAX_FILENAME_SIZE);
16cc4ffe
CM		 4173 SocketAddress_to_str(chr->filename, CHR_MAX_FILENAME_SIZE, "disconnected:",
4174 addr, is_listen, is_telnet);
f6bd5d6e
GH		 4175
4176 if (is_listen) {
43ded1a0
CM		 4177 if (is_telnet) {
4178 s->do_telnetopt = 1;
4179 }
5dd1f02b
CM		 4180 } else if (reconnect > 0) {
4181 s->reconnect_time = reconnect;
f6bd5d6e 4182 }
43ded1a0 4183
5008e5b7
CM		 4184 if (s->reconnect_time) {
4185 socket_try_connect(chr);
4186 } else if (!qemu_chr_open_socket_fd(chr, errp)) {
4187 g_free(s);
4188 g_free(chr->filename);
4189 g_free(chr);
4190 return NULL;
f6bd5d6e 4191 }
43ded1a0
CM		 4192
4193 if (is_listen && is_waitconnect) {
4194 fprintf(stderr, "QEMU waiting for connection on: %s\n",
4195 chr->filename);
4196 tcp_chr_accept(s->listen_chan, G_IO_IN, chr);
4197 qemu_set_nonblock(s->listen_fd);
4198 }
4199
4200 return chr;
f6bd5d6e
GH		 4201}
4202
08d0ab3f
LL		 4203static CharDriverState *qmp_chardev_open_udp(ChardevUdp *udp,
4204 Error **errp)
3ecc059d
GH		 4205{
4206 int fd;
4207
08d0ab3f 4208 fd = socket_dgram(udp->remote, udp->local, errp);
5f758366 4209 if (fd < 0) {
3ecc059d
GH		 4210 return NULL;
4211 }
4212 return qemu_chr_open_udp_fd(fd);
4213}
4214
f1a1a356
GH		 4215ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
4216 Error **errp)
4217{
4218 ChardevReturn *ret = g_new0(ChardevReturn, 1);
edb2fb3c 4219 CharDriverState *base, *chr = NULL;
f1a1a356
GH		 4220
4221 chr = qemu_chr_find(id);
4222 if (chr) {
4223 error_setg(errp, "Chardev '%s' already exists", id);
4224 g_free(ret);
4225 return NULL;
4226 }
4227
4228 switch (backend->kind) {
ffbdbe59
GH		 4229 case CHARDEV_BACKEND_KIND_FILE:
4230 chr = qmp_chardev_open_file(backend->file, errp);
4231 break;
d36b2b90
MA		 4232 case CHARDEV_BACKEND_KIND_SERIAL:
4233 chr = qmp_chardev_open_serial(backend->serial, errp);
4234 break;
4235 case CHARDEV_BACKEND_KIND_PARALLEL:
4236 chr = qmp_chardev_open_parallel(backend->parallel, errp);
d59044ef 4237 break;
548cbb36
GH		 4238 case CHARDEV_BACKEND_KIND_PIPE:
4239 chr = qemu_chr_open_pipe(backend->pipe);
4240 break;
f6bd5d6e
GH		 4241 case CHARDEV_BACKEND_KIND_SOCKET:
4242 chr = qmp_chardev_open_socket(backend->socket, errp);
4243 break;
08d0ab3f
LL		 4244 case CHARDEV_BACKEND_KIND_UDP:
4245 chr = qmp_chardev_open_udp(backend->udp, errp);
3ecc059d 4246 break;
0a1a7fab
GH		 4247#ifdef HAVE_CHARDEV_TTY
4248 case CHARDEV_BACKEND_KIND_PTY:
e68c5958 4249 chr = qemu_chr_open_pty(id, ret);
0a1a7fab 4250 break;
0a1a7fab 4251#endif
f1a1a356 4252 case CHARDEV_BACKEND_KIND_NULL:
80dca9e6 4253 chr = qemu_chr_open_null();
f1a1a356 4254 break;
edb2fb3c
GH		 4255 case CHARDEV_BACKEND_KIND_MUX:
4256 base = qemu_chr_find(backend->mux->chardev);
4257 if (base == NULL) {
4258 error_setg(errp, "mux: base chardev %s not found",
4259 backend->mux->chardev);
4260 break;
4261 }
4262 chr = qemu_chr_open_mux(base);
4263 break;
f5a51cab
GH		 4264 case CHARDEV_BACKEND_KIND_MSMOUSE:
4265 chr = qemu_chr_open_msmouse();
4266 break;
2d57286d
GH		 4267#ifdef CONFIG_BRLAPI
4268 case CHARDEV_BACKEND_KIND_BRAILLE:
4269 chr = chr_baum_init();
4270 break;
4271#endif
5692399f
PB		 4272 case CHARDEV_BACKEND_KIND_TESTDEV:
4273 chr = chr_testdev_init();
4274 break;
7c358031
GH		 4275 case CHARDEV_BACKEND_KIND_STDIO:
4276 chr = qemu_chr_open_stdio(backend->stdio);
4277 break;
d9ac374f
GH		 4278#ifdef _WIN32
4279 case CHARDEV_BACKEND_KIND_CONSOLE:
4280 chr = qemu_chr_open_win_con();
4281 break;
cd153e2a
GH		 4282#endif
4283#ifdef CONFIG_SPICE
4284 case CHARDEV_BACKEND_KIND_SPICEVMC:
4285 chr = qemu_chr_open_spice_vmc(backend->spicevmc->type);
4286 break;
4287 case CHARDEV_BACKEND_KIND_SPICEPORT:
4288 chr = qemu_chr_open_spice_port(backend->spiceport->fqdn);
4289 break;
d9ac374f 4290#endif
702ec69c
GH		 4291 case CHARDEV_BACKEND_KIND_VC:
4292 chr = vc_init(backend->vc);
4293 break;
3a1da42e 4294 case CHARDEV_BACKEND_KIND_RINGBUF:
1da48c65 4295 case CHARDEV_BACKEND_KIND_MEMORY:
3a1da42e 4296 chr = qemu_chr_open_ringbuf(backend->ringbuf, errp);
1da48c65 4297 break;
f1a1a356
GH		 4298 default:
4299 error_setg(errp, "unknown chardev backend (%d)", backend->kind);
4300 break;
4301 }
4302
3894c787
MA		 4303 /*
4304 * Character backend open hasn't been fully converted to the Error
4305 * API. Some opens fail without setting an error. Set a generic
4306 * error then.
4307 * TODO full conversion to Error API
4308 */
4309 if (chr == NULL && errp && !*errp) {
f1a1a356
GH		 4310 error_setg(errp, "Failed to create chardev");
4311 }
4312 if (chr) {
4313 chr->label = g_strdup(id);
edb2fb3c
GH		 4314 chr->avail_connections =
4315 (backend->kind == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1;
60d95386
GH		 4316 if (!chr->filename) {
4317 chr->filename = g_strdup(ChardevBackendKind_lookup[backend->kind]);
4318 }
bd5c51ee
MR		 4319 if (!chr->explicit_be_open) {
4320 qemu_chr_be_event(chr, CHR_EVENT_OPENED);
4321 }
f1a1a356
GH		 4322 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
4323 return ret;
4324 } else {
4325 g_free(ret);
4326 return NULL;
4327 }
4328}
4329
4330void qmp_chardev_remove(const char *id, Error **errp)
4331{
4332 CharDriverState *chr;
4333
4334 chr = qemu_chr_find(id);
8108fd3e 4335 if (chr == NULL) {
f1a1a356
GH		 4336 error_setg(errp, "Chardev '%s' not found", id);
4337 return;
4338 }
4339 if (chr->chr_can_read || chr->chr_read ||
4340 chr->chr_event || chr->handler_opaque) {
4341 error_setg(errp, "Chardev '%s' is busy", id);
4342 return;
4343 }
4344 qemu_chr_delete(chr);
4345}
d654f34e
AL		 4346
4347static void register_types(void)
4348{
e4d50d47
PM		 4349 register_char_driver("null", CHARDEV_BACKEND_KIND_NULL, NULL);
4350 register_char_driver("socket", CHARDEV_BACKEND_KIND_SOCKET,
4351 qemu_chr_parse_socket);
4352 register_char_driver("udp", CHARDEV_BACKEND_KIND_UDP, qemu_chr_parse_udp);
4353 register_char_driver("ringbuf", CHARDEV_BACKEND_KIND_RINGBUF,
4354 qemu_chr_parse_ringbuf);
4355 register_char_driver("file", CHARDEV_BACKEND_KIND_FILE,
4356 qemu_chr_parse_file_out);
4357 register_char_driver("stdio", CHARDEV_BACKEND_KIND_STDIO,
4358 qemu_chr_parse_stdio);
4359 register_char_driver("serial", CHARDEV_BACKEND_KIND_SERIAL,
4360 qemu_chr_parse_serial);
4361 register_char_driver("tty", CHARDEV_BACKEND_KIND_SERIAL,
4362 qemu_chr_parse_serial);
4363 register_char_driver("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
4364 qemu_chr_parse_parallel);
4365 register_char_driver("parport", CHARDEV_BACKEND_KIND_PARALLEL,
4366 qemu_chr_parse_parallel);
4367 register_char_driver("pty", CHARDEV_BACKEND_KIND_PTY, NULL);
4368 register_char_driver("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL);
4369 register_char_driver("pipe", CHARDEV_BACKEND_KIND_PIPE,
4370 qemu_chr_parse_pipe);
4371 register_char_driver("mux", CHARDEV_BACKEND_KIND_MUX, qemu_chr_parse_mux);
c11ed966 4372 /* Bug-compatibility: */
e4d50d47
PM		 4373 register_char_driver("memory", CHARDEV_BACKEND_KIND_MEMORY,
4374 qemu_chr_parse_ringbuf);
7b7ab18d
MR		 4375 /* this must be done after machine init, since we register FEs with muxes
4376 * as part of realize functions like serial_isa_realizefn when -nographic
4377 * is specified
4378 */
4379 qemu_add_machine_init_done_notifier(&muxes_realize_notify);
d654f34e
AL		 4380}
4381
4382type_init(register_types);
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