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Remove unnecessary FreeBSD #include
[qemu.git] / qemu-char.c
CommitLineData
6f97dba0
AL		 1/*
2 * QEMU System Emulator
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24#include "qemu-common.h"
83c9089e 25#include "monitor/monitor.h"
28ecbaee 26#include "ui/console.h"
9c17d615 27#include "sysemu/sysemu.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"
6f97dba0
AL		 32
33#include <unistd.h>
34#include <fcntl.h>
6f97dba0
AL		 35#include <time.h>
36#include <errno.h>
37#include <sys/time.h>
38#include <zlib.h>
39
40#ifndef _WIN32
41#include <sys/times.h>
42#include <sys/wait.h>
43#include <termios.h>
44#include <sys/mman.h>
45#include <sys/ioctl.h>
24646c7e 46#include <sys/resource.h>
6f97dba0
AL		 47#include <sys/socket.h>
48#include <netinet/in.h>
24646c7e 49#include <net/if.h>
24646c7e 50#include <arpa/inet.h>
6f97dba0
AL		 51#include <dirent.h>
52#include <netdb.h>
53#include <sys/select.h>
71e72a19 54#ifdef CONFIG_BSD
6f97dba0 55#include <sys/stat.h>
a167ba50
AJ		 56#if defined(__GLIBC__)
57#include <pty.h>
3294ce18
MT		 58#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
59#include <libutil.h>
60#else
61#include <util.h>
a167ba50 62#endif
3294ce18
MT		 63#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
64#include <dev/ppbus/ppi.h>
65#include <dev/ppbus/ppbconf.h>
c5e97233 66#elif defined(__DragonFly__)
c5e97233
BS		 67#include <dev/misc/ppi/ppi.h>
68#include <bus/ppbus/ppbconf.h>
6f97dba0 69#endif
bbe813a2 70#else
6f97dba0 71#ifdef __linux__
6f97dba0
AL		 72#include <pty.h>
73
74#include <linux/ppdev.h>
75#include <linux/parport.h>
76#endif
77#ifdef __sun__
78#include <sys/stat.h>
79#include <sys/ethernet.h>
80#include <sys/sockio.h>
81#include <netinet/arp.h>
82#include <netinet/in.h>
83#include <netinet/in_systm.h>
84#include <netinet/ip.h>
85#include <netinet/ip_icmp.h> // must come after ip.h
86#include <netinet/udp.h>
87#include <netinet/tcp.h>
88#include <net/if.h>
89#include <syslog.h>
90#include <stropts.h>
91#endif
92#endif
93#endif
94
1de7afc9 95#include "qemu/sockets.h"
cbcc6336 96#include "ui/qemu-spice.h"
6f97dba0 97
9bd7854e
AS		 98#define READ_BUF_LEN 4096
99
6f97dba0
AL		 100/***********************************************************/
101/* character device */
102
72cf2d4f
BS		 103static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
104 QTAILQ_HEAD_INITIALIZER(chardevs);
2970a6c9 105
a425d23f 106void qemu_chr_be_event(CharDriverState *s, int event)
6f97dba0 107{
73cdf3f2
AG		 108 /* Keep track if the char device is open */
109 switch (event) {
110 case CHR_EVENT_OPENED:
16665b94 111 s->be_open = 1;
73cdf3f2
AG		 112 break;
113 case CHR_EVENT_CLOSED:
16665b94 114 s->be_open = 0;
73cdf3f2
AG		 115 break;
116 }
117
6f97dba0
AL		 118 if (!s->chr_event)
119 return;
120 s->chr_event(s->handler_opaque, event);
121}
122
fee204fd 123static gboolean qemu_chr_be_generic_open_bh(gpointer opaque)
6f97dba0
AL		 124{
125 CharDriverState *s = opaque;
a425d23f 126 qemu_chr_be_event(s, CHR_EVENT_OPENED);
9f939df9
AL		 127 s->idle_tag = 0;
128 return FALSE;
6f97dba0
AL		 129}
130
fee204fd 131void qemu_chr_be_generic_open(CharDriverState *s)
6f97dba0 132{
9f939df9 133 if (s->idle_tag == 0) {
fee204fd 134 s->idle_tag = g_idle_add(qemu_chr_be_generic_open_bh, s);
6f97dba0
AL		 135 }
136}
137
2cc6e0a1 138int qemu_chr_fe_write(CharDriverState *s, const uint8_t *buf, int len)
6f97dba0
AL		 139{
140 return s->chr_write(s, buf, len);
141}
142
cd18720a
AL		 143int qemu_chr_fe_write_all(CharDriverState *s, const uint8_t *buf, int len)
144{
145 int offset = 0;
146 int res;
147
148 while (offset < len) {
149 do {
150 res = s->chr_write(s, buf + offset, len - offset);
151 if (res == -1 && errno == EAGAIN) {
152 g_usleep(100);
153 }
154 } while (res == -1 && errno == EAGAIN);
155
156 if (res == 0) {
157 break;
158 }
159
160 if (res < 0) {
161 return res;
162 }
163
164 offset += res;
165 }
166
167 return offset;
168}
169
41084f1b 170int qemu_chr_fe_ioctl(CharDriverState *s, int cmd, void *arg)
6f97dba0
AL		 171{
172 if (!s->chr_ioctl)
173 return -ENOTSUP;
174 return s->chr_ioctl(s, cmd, arg);
175}
176
909cda12 177int qemu_chr_be_can_write(CharDriverState *s)
6f97dba0
AL		 178{
179 if (!s->chr_can_read)
180 return 0;
181 return s->chr_can_read(s->handler_opaque);
182}
183
fa5efccb 184void qemu_chr_be_write(CharDriverState *s, uint8_t *buf, int len)
6f97dba0 185{
ac310734
SW		 186 if (s->chr_read) {
187 s->chr_read(s->handler_opaque, buf, len);
188 }
6f97dba0
AL		 189}
190
74c0d6f0 191int qemu_chr_fe_get_msgfd(CharDriverState *s)
7d174059
MM		 192{
193 return s->get_msgfd ? s->get_msgfd(s) : -1;
194}
195
13661089
DB		 196int qemu_chr_add_client(CharDriverState *s, int fd)
197{
198 return s->chr_add_client ? s->chr_add_client(s, fd) : -1;
199}
200
6f97dba0
AL		 201void qemu_chr_accept_input(CharDriverState *s)
202{
203 if (s->chr_accept_input)
204 s->chr_accept_input(s);
98c8ee1d 205 qemu_notify_event();
6f97dba0
AL		 206}
207
e7e71b0e 208void qemu_chr_fe_printf(CharDriverState *s, const char *fmt, ...)
6f97dba0 209{
9bd7854e 210 char buf[READ_BUF_LEN];
6f97dba0
AL		 211 va_list ap;
212 va_start(ap, fmt);
213 vsnprintf(buf, sizeof(buf), fmt, ap);
2cc6e0a1 214 qemu_chr_fe_write(s, (uint8_t *)buf, strlen(buf));
6f97dba0
AL		 215 va_end(ap);
216}
217
6f97dba0 218void qemu_chr_add_handlers(CharDriverState *s,
7b27a769 219 IOCanReadHandler *fd_can_read,
6f97dba0
AL		 220 IOReadHandler *fd_read,
221 IOEventHandler *fd_event,
222 void *opaque)
223{
19083228
HG		 224 int fe_open;
225
da7d998b 226 if (!opaque && !fd_can_read && !fd_read && !fd_event) {
19083228
HG		 227 fe_open = 0;
228 } else {
229 fe_open = 1;
2d6c1ef4 230 }
6f97dba0
AL		 231 s->chr_can_read = fd_can_read;
232 s->chr_read = fd_read;
233 s->chr_event = fd_event;
234 s->handler_opaque = opaque;
235 if (s->chr_update_read_handler)
236 s->chr_update_read_handler(s);
73cdf3f2 237
19083228 238 if (!s->explicit_fe_open) {
8e25daa8 239 qemu_chr_fe_set_open(s, fe_open);
19083228
HG		 240 }
241
73cdf3f2
AG		 242 /* We're connecting to an already opened device, so let's make sure we
243 also get the open event */
a59bcd31 244 if (fe_open && s->be_open) {
fee204fd 245 qemu_chr_be_generic_open(s);
73cdf3f2 246 }
6f97dba0
AL		 247}
248
249static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
250{
251 return len;
252}
253
80dca9e6 254static CharDriverState *qemu_chr_open_null(void)
6f97dba0
AL		 255{
256 CharDriverState *chr;
257
7267c094 258 chr = g_malloc0(sizeof(CharDriverState));
6f97dba0 259 chr->chr_write = null_chr_write;
1f51470d 260 return chr;
6f97dba0
AL		 261}
262
263/* MUX driver for serial I/O splitting */
6f97dba0
AL		 264#define MAX_MUX 4
265#define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
266#define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
267typedef struct {
7b27a769 268 IOCanReadHandler *chr_can_read[MAX_MUX];
6f97dba0
AL		 269 IOReadHandler *chr_read[MAX_MUX];
270 IOEventHandler *chr_event[MAX_MUX];
271 void *ext_opaque[MAX_MUX];
272 CharDriverState *drv;
799f1f23 273 int focus;
6f97dba0
AL		 274 int mux_cnt;
275 int term_got_escape;
276 int max_size;
a80bf99f
AL		 277 /* Intermediate input buffer allows to catch escape sequences even if the
278 currently active device is not accepting any input - but only until it
279 is full as well. */
280 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
281 int prod[MAX_MUX];
282 int cons[MAX_MUX];
2d22959d 283 int timestamps;
4ab312f7 284 int linestart;
2d22959d 285 int64_t timestamps_start;
6f97dba0
AL		 286} MuxDriver;
287
288
289static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
290{
291 MuxDriver *d = chr->opaque;
292 int ret;
2d22959d 293 if (!d->timestamps) {
6f97dba0
AL		 294 ret = d->drv->chr_write(d->drv, buf, len);
295 } else {
296 int i;
297
298 ret = 0;
4ab312f7
JK		 299 for (i = 0; i < len; i++) {
300 if (d->linestart) {
6f97dba0
AL		 301 char buf1[64];
302 int64_t ti;
303 int secs;
304
7bd427d8 305 ti = qemu_get_clock_ms(rt_clock);
2d22959d
JK		 306 if (d->timestamps_start == -1)
307 d->timestamps_start = ti;
308 ti -= d->timestamps_start;
a4bb1db8 309 secs = ti / 1000;
6f97dba0
AL		 310 snprintf(buf1, sizeof(buf1),
311 "[%02d:%02d:%02d.%03d] ",
312 secs / 3600,
313 (secs / 60) % 60,
314 secs % 60,
a4bb1db8 315 (int)(ti % 1000));
6f97dba0 316 d->drv->chr_write(d->drv, (uint8_t *)buf1, strlen(buf1));
4ab312f7
JK		 317 d->linestart = 0;
318 }
319 ret += d->drv->chr_write(d->drv, buf+i, 1);
320 if (buf[i] == '\n') {
321 d->linestart = 1;
6f97dba0
AL		 322 }
323 }
324 }
325 return ret;
326}
327
328static const char * const mux_help[] = {
329 "% h print this help\n\r",
330 "% x exit emulator\n\r",
331 "% s save disk data back to file (if -snapshot)\n\r",
332 "% t toggle console timestamps\n\r"
333 "% b send break (magic sysrq)\n\r",
334 "% c switch between console and monitor\n\r",
335 "% % sends %\n\r",
336 NULL
337};
338
339int term_escape_char = 0x01; /* ctrl-a is used for escape */
340static void mux_print_help(CharDriverState *chr)
341{
342 int i, j;
343 char ebuf[15] = "Escape-Char";
344 char cbuf[50] = "\n\r";
345
346 if (term_escape_char > 0 && term_escape_char < 26) {
347 snprintf(cbuf, sizeof(cbuf), "\n\r");
348 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
349 } else {
350 snprintf(cbuf, sizeof(cbuf),
351 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
352 term_escape_char);
353 }
354 chr->chr_write(chr, (uint8_t *)cbuf, strlen(cbuf));
355 for (i = 0; mux_help[i] != NULL; i++) {
356 for (j=0; mux_help[i][j] != '\0'; j++) {
357 if (mux_help[i][j] == '%')
358 chr->chr_write(chr, (uint8_t *)ebuf, strlen(ebuf));
359 else
360 chr->chr_write(chr, (uint8_t *)&mux_help[i][j], 1);
361 }
362 }
363}
364
2724b180
AL		 365static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
366{
367 if (d->chr_event[mux_nr])
368 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
369}
370
6f97dba0
AL		 371static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
372{
373 if (d->term_got_escape) {
374 d->term_got_escape = 0;
375 if (ch == term_escape_char)
376 goto send_char;
377 switch(ch) {
378 case '?':
379 case 'h':
380 mux_print_help(chr);
381 break;
382 case 'x':
383 {
384 const char *term = "QEMU: Terminated\n\r";
385 chr->chr_write(chr,(uint8_t *)term,strlen(term));
386 exit(0);
387 break;
388 }
389 case 's':
6ab4b5ab 390 bdrv_commit_all();
6f97dba0
AL		 391 break;
392 case 'b':
a425d23f 393 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
6f97dba0
AL		 394 break;
395 case 'c':
396 /* Switch to the next registered device */
799f1f23
GH		 397 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
398 d->focus++;
399 if (d->focus >= d->mux_cnt)
400 d->focus = 0;
401 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
6f97dba0 402 break;
2d22959d
JK		 403 case 't':
404 d->timestamps = !d->timestamps;
405 d->timestamps_start = -1;
4ab312f7 406 d->linestart = 0;
2d22959d 407 break;
6f97dba0
AL		 408 }
409 } else if (ch == term_escape_char) {
410 d->term_got_escape = 1;
411 } else {
412 send_char:
413 return 1;
414 }
415 return 0;
416}
417
418static void mux_chr_accept_input(CharDriverState *chr)
419{
6f97dba0 420 MuxDriver *d = chr->opaque;
799f1f23 421 int m = d->focus;
6f97dba0 422
a80bf99f 423 while (d->prod[m] != d->cons[m] &&
6f97dba0
AL		 424 d->chr_can_read[m] &&
425 d->chr_can_read[m](d->ext_opaque[m])) {
426 d->chr_read[m](d->ext_opaque[m],
a80bf99f 427 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
6f97dba0
AL		 428 }
429}
430
431static int mux_chr_can_read(void *opaque)
432{
433 CharDriverState *chr = opaque;
434 MuxDriver *d = chr->opaque;
799f1f23 435 int m = d->focus;
6f97dba0 436
a80bf99f 437 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
6f97dba0 438 return 1;
a80bf99f
AL		 439 if (d->chr_can_read[m])
440 return d->chr_can_read[m](d->ext_opaque[m]);
6f97dba0
AL		 441 return 0;
442}
443
444static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
445{
446 CharDriverState *chr = opaque;
447 MuxDriver *d = chr->opaque;
799f1f23 448 int m = d->focus;
6f97dba0
AL		 449 int i;
450
451 mux_chr_accept_input (opaque);
452
453 for(i = 0; i < size; i++)
454 if (mux_proc_byte(chr, d, buf[i])) {
a80bf99f 455 if (d->prod[m] == d->cons[m] &&
6f97dba0
AL		 456 d->chr_can_read[m] &&
457 d->chr_can_read[m](d->ext_opaque[m]))
458 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
459 else
a80bf99f 460 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
6f97dba0
AL		 461 }
462}
463
464static void mux_chr_event(void *opaque, int event)
465{
466 CharDriverState *chr = opaque;
467 MuxDriver *d = chr->opaque;
468 int i;
469
470 /* Send the event to all registered listeners */
471 for (i = 0; i < d->mux_cnt; i++)
2724b180 472 mux_chr_send_event(d, i, event);
6f97dba0
AL		 473}
474
475static void mux_chr_update_read_handler(CharDriverState *chr)
476{
477 MuxDriver *d = chr->opaque;
478
479 if (d->mux_cnt >= MAX_MUX) {
480 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
481 return;
482 }
483 d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
484 d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
485 d->chr_read[d->mux_cnt] = chr->chr_read;
486 d->chr_event[d->mux_cnt] = chr->chr_event;
487 /* Fix up the real driver with mux routines */
488 if (d->mux_cnt == 0) {
489 qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
490 mux_chr_event, chr);
491 }
799f1f23
GH		 492 if (d->focus != -1) {
493 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
a7aec5da 494 }
799f1f23 495 d->focus = d->mux_cnt;
6f97dba0 496 d->mux_cnt++;
799f1f23 497 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
6f97dba0
AL		 498}
499
500static CharDriverState *qemu_chr_open_mux(CharDriverState *drv)
501{
502 CharDriverState *chr;
503 MuxDriver *d;
504
7267c094
AL		 505 chr = g_malloc0(sizeof(CharDriverState));
506 d = g_malloc0(sizeof(MuxDriver));
6f97dba0
AL		 507
508 chr->opaque = d;
509 d->drv = drv;
799f1f23 510 d->focus = -1;
6f97dba0
AL		 511 chr->chr_write = mux_chr_write;
512 chr->chr_update_read_handler = mux_chr_update_read_handler;
513 chr->chr_accept_input = mux_chr_accept_input;
7c32c4fe 514 /* Frontend guest-open / -close notification is not support with muxes */
574b711a 515 chr->chr_set_fe_open = NULL;
73cdf3f2
AG		 516
517 /* Muxes are always open on creation */
fee204fd 518 qemu_chr_be_generic_open(chr);
73cdf3f2 519
6f97dba0
AL		 520 return chr;
521}
522
523
524#ifdef _WIN32
d247d25f 525int send_all(int fd, const void *buf, int len1)
6f97dba0
AL		 526{
527 int ret, len;
528
529 len = len1;
530 while (len > 0) {
531 ret = send(fd, buf, len, 0);
532 if (ret < 0) {
6f97dba0
AL		 533 errno = WSAGetLastError();
534 if (errno != WSAEWOULDBLOCK) {
535 return -1;
536 }
537 } else if (ret == 0) {
538 break;
539 } else {
540 buf += ret;
541 len -= ret;
542 }
543 }
544 return len1 - len;
545}
546
547#else
548
5fc9cfed 549int send_all(int fd, const void *_buf, int len1)
6f97dba0
AL		 550{
551 int ret, len;
5fc9cfed 552 const uint8_t *buf = _buf;
6f97dba0
AL		 553
554 len = len1;
555 while (len > 0) {
556 ret = write(fd, buf, len);
557 if (ret < 0) {
558 if (errno != EINTR && errno != EAGAIN)
559 return -1;
560 } else if (ret == 0) {
561 break;
562 } else {
563 buf += ret;
564 len -= ret;
565 }
566 }
567 return len1 - len;
568}
4549a8b7
SB		 569
570int recv_all(int fd, void *_buf, int len1, bool single_read)
571{
572 int ret, len;
573 uint8_t *buf = _buf;
574
575 len = len1;
576 while ((len > 0) && (ret = read(fd, buf, len)) != 0) {
577 if (ret < 0) {
578 if (errno != EINTR && errno != EAGAIN) {
579 return -1;
580 }
581 continue;
582 } else {
583 if (single_read) {
584 return ret;
585 }
586 buf += ret;
587 len -= ret;
588 }
589 }
590 return len1 - len;
591}
592
6f97dba0
AL		 593#endif /* !_WIN32 */
594
96c63847
AL		 595typedef struct IOWatchPoll
596{
d185c094
PB		 597 GSource parent;
598
1e885b25 599 GIOChannel *channel;
96c63847 600 GSource *src;
96c63847
AL		 601
602 IOCanReadHandler *fd_can_read;
1e885b25 603 GSourceFunc fd_read;
96c63847 604 void *opaque;
96c63847
AL		 605} IOWatchPoll;
606
96c63847
AL		 607static IOWatchPoll *io_watch_poll_from_source(GSource *source)
608{
d185c094 609 return container_of(source, IOWatchPoll, parent);
96c63847
AL		 610}
611
612static gboolean io_watch_poll_prepare(GSource *source, gint *timeout_)
613{
614 IOWatchPoll *iwp = io_watch_poll_from_source(source);
d185c094 615 bool now_active = iwp->fd_can_read(iwp->opaque) > 0;
1e885b25 616 bool was_active = iwp->src != NULL;
d185c094 617 if (was_active == now_active) {
96c63847
AL		 618 return FALSE;
619 }
620
d185c094 621 if (now_active) {
1e885b25
PB		 622 iwp->src = g_io_create_watch(iwp->channel, G_IO_IN | G_IO_ERR | G_IO_HUP);
623 g_source_set_callback(iwp->src, iwp->fd_read, iwp->opaque, NULL);
d185c094
PB		 624 g_source_attach(iwp->src, NULL);
625 } else {
1e885b25
PB		 626 g_source_destroy(iwp->src);
627 g_source_unref(iwp->src);
628 iwp->src = NULL;
d185c094
PB		 629 }
630 return FALSE;
96c63847
AL		 631}
632
633static gboolean io_watch_poll_check(GSource *source)
634{
d185c094 635 return FALSE;
96c63847
AL		 636}
637
638static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
639 gpointer user_data)
640{
d185c094 641 abort();
96c63847
AL		 642}
643
644static void io_watch_poll_finalize(GSource *source)
645{
2b316774
PB		 646 /* Due to a glib bug, removing the last reference to a source
647 * inside a finalize callback causes recursive locking (and a
648 * deadlock). This is not a problem inside other callbacks,
649 * including dispatch callbacks, so we call io_remove_watch_poll
650 * to remove this source. At this point, iwp->src must
651 * be NULL, or we would leak it.
652 *
653 * This would be solved much more elegantly by child sources,
654 * but we support older glib versions that do not have them.
655 */
96c63847 656 IOWatchPoll *iwp = io_watch_poll_from_source(source);
2b316774 657 assert(iwp->src == NULL);
96c63847
AL		 658}
659
660static GSourceFuncs io_watch_poll_funcs = {
661 .prepare = io_watch_poll_prepare,
662 .check = io_watch_poll_check,
663 .dispatch = io_watch_poll_dispatch,
664 .finalize = io_watch_poll_finalize,
665};
666
667/* Can only be used for read */
668static guint io_add_watch_poll(GIOChannel *channel,
669 IOCanReadHandler *fd_can_read,
670 GIOFunc fd_read,
671 gpointer user_data)
672{
673 IOWatchPoll *iwp;
0ca5aa4f 674 int tag;
96c63847 675
d185c094 676 iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs, sizeof(IOWatchPoll));
96c63847
AL		 677 iwp->fd_can_read = fd_can_read;
678 iwp->opaque = user_data;
1e885b25
PB		 679 iwp->channel = channel;
680 iwp->fd_read = (GSourceFunc) fd_read;
681 iwp->src = NULL;
96c63847 682
0ca5aa4f
PB		 683 tag = g_source_attach(&iwp->parent, NULL);
684 g_source_unref(&iwp->parent);
685 return tag;
96c63847
AL		 686}
687
2b316774
PB		 688static void io_remove_watch_poll(guint tag)
689{
690 GSource *source;
691 IOWatchPoll *iwp;
692
693 g_return_if_fail (tag > 0);
694
695 source = g_main_context_find_source_by_id(NULL, tag);
696 g_return_if_fail (source != NULL);
697
698 iwp = io_watch_poll_from_source(source);
699 if (iwp->src) {
700 g_source_destroy(iwp->src);
701 g_source_unref(iwp->src);
702 iwp->src = NULL;
703 }
704 g_source_destroy(&iwp->parent);
705}
706
44ab9ed4 707#ifndef _WIN32
96c63847
AL		 708static GIOChannel *io_channel_from_fd(int fd)
709{
710 GIOChannel *chan;
711
712 if (fd == -1) {
713 return NULL;
714 }
715
716 chan = g_io_channel_unix_new(fd);
717
718 g_io_channel_set_encoding(chan, NULL, NULL);
719 g_io_channel_set_buffered(chan, FALSE);
720
721 return chan;
722}
44ab9ed4 723#endif
96c63847 724
76a9644b
AL		 725static GIOChannel *io_channel_from_socket(int fd)
726{
727 GIOChannel *chan;
728
729 if (fd == -1) {
730 return NULL;
731 }
732
733#ifdef _WIN32
734 chan = g_io_channel_win32_new_socket(fd);
735#else
736 chan = g_io_channel_unix_new(fd);
737#endif
738
739 g_io_channel_set_encoding(chan, NULL, NULL);
740 g_io_channel_set_buffered(chan, FALSE);
741
742 return chan;
743}
744
684a096e 745static int io_channel_send(GIOChannel *fd, const void *buf, size_t len)
96c63847
AL		 746{
747 GIOStatus status;
684a096e 748 size_t offset;
96c63847 749
684a096e
AL		 750 offset = 0;
751 while (offset < len) {
752 gsize bytes_written;
753
754 status = g_io_channel_write_chars(fd, buf + offset, len - offset,
96c63847
AL		 755 &bytes_written, NULL);
756 if (status != G_IO_STATUS_NORMAL) {
23673ca7 757 if (status == G_IO_STATUS_AGAIN) {
684a096e
AL		 758 /* If we've written any data, return a partial write. */
759 if (offset) {
760 break;
761 }
23673ca7 762 errno = EAGAIN;
23673ca7
AL		 763 } else {
764 errno = EINVAL;
96c63847 765 }
684a096e
AL		 766
767 return -1;
96c63847
AL		 768 } else if (status == G_IO_STATUS_EOF) {
769 break;
96c63847 770 }
684a096e
AL		 771
772 offset += bytes_written;
96c63847 773 }
684a096e
AL		 774
775 return offset;
96c63847 776}
96c63847 777
44ab9ed4
BS		 778#ifndef _WIN32
779
a29753f8
AL		 780typedef struct FDCharDriver {
781 CharDriverState *chr;
782 GIOChannel *fd_in, *fd_out;
783 guint fd_in_tag;
6f97dba0 784 int max_size;
a29753f8 785 QTAILQ_ENTRY(FDCharDriver) node;
6f97dba0
AL		 786} FDCharDriver;
787
6f97dba0
AL		 788static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
789{
790 FDCharDriver *s = chr->opaque;
a29753f8 791
684a096e 792 return io_channel_send(s->fd_out, buf, len);
6f97dba0
AL		 793}
794
a29753f8 795static gboolean fd_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 796{
797 CharDriverState *chr = opaque;
798 FDCharDriver *s = chr->opaque;
a29753f8 799 int len;
9bd7854e 800 uint8_t buf[READ_BUF_LEN];
a29753f8
AL		 801 GIOStatus status;
802 gsize bytes_read;
6f97dba0
AL		 803
804 len = sizeof(buf);
a29753f8 805 if (len > s->max_size) {
6f97dba0 806 len = s->max_size;
a29753f8
AL		 807 }
808 if (len == 0) {
cdbf6e16 809 return TRUE;
a29753f8
AL		 810 }
811
812 status = g_io_channel_read_chars(chan, (gchar *)buf,
813 len, &bytes_read, NULL);
814 if (status == G_IO_STATUS_EOF) {
cdbf6e16 815 if (s->fd_in_tag) {
2b316774 816 io_remove_watch_poll(s->fd_in_tag);
cdbf6e16
PB		 817 s->fd_in_tag = 0;
818 }
a425d23f 819 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
a29753f8 820 return FALSE;
6f97dba0 821 }
a29753f8
AL		 822 if (status == G_IO_STATUS_NORMAL) {
823 qemu_chr_be_write(chr, buf, bytes_read);
6f97dba0 824 }
a29753f8
AL		 825
826 return TRUE;
827}
828
829static int fd_chr_read_poll(void *opaque)
830{
831 CharDriverState *chr = opaque;
832 FDCharDriver *s = chr->opaque;
833
834 s->max_size = qemu_chr_be_can_write(chr);
835 return s->max_size;
6f97dba0
AL		 836}
837
23673ca7
AL		 838static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
839{
840 FDCharDriver *s = chr->opaque;
841 return g_io_create_watch(s->fd_out, cond);
842}
843
6f97dba0
AL		 844static void fd_chr_update_read_handler(CharDriverState *chr)
845{
846 FDCharDriver *s = chr->opaque;
847
a29753f8 848 if (s->fd_in_tag) {
2b316774 849 io_remove_watch_poll(s->fd_in_tag);
910b6368 850 s->fd_in_tag = 0;
a29753f8
AL		 851 }
852
853 if (s->fd_in) {
854 s->fd_in_tag = io_add_watch_poll(s->fd_in, fd_chr_read_poll, fd_chr_read, chr);
6f97dba0
AL		 855 }
856}
857
858static void fd_chr_close(struct CharDriverState *chr)
859{
860 FDCharDriver *s = chr->opaque;
861
a29753f8 862 if (s->fd_in_tag) {
2b316774 863 io_remove_watch_poll(s->fd_in_tag);
a29753f8
AL		 864 s->fd_in_tag = 0;
865 }
866
867 if (s->fd_in) {
868 g_io_channel_unref(s->fd_in);
869 }
870 if (s->fd_out) {
871 g_io_channel_unref(s->fd_out);
6f97dba0
AL		 872 }
873
7267c094 874 g_free(s);
a425d23f 875 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 876}
877
878/* open a character device to a unix fd */
879static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
880{
881 CharDriverState *chr;
882 FDCharDriver *s;
883
7267c094
AL		 884 chr = g_malloc0(sizeof(CharDriverState));
885 s = g_malloc0(sizeof(FDCharDriver));
a29753f8
AL		 886 s->fd_in = io_channel_from_fd(fd_in);
887 s->fd_out = io_channel_from_fd(fd_out);
23673ca7 888 fcntl(fd_out, F_SETFL, O_NONBLOCK);
a29753f8 889 s->chr = chr;
6f97dba0 890 chr->opaque = s;
23673ca7 891 chr->chr_add_watch = fd_chr_add_watch;
6f97dba0
AL		 892 chr->chr_write = fd_chr_write;
893 chr->chr_update_read_handler = fd_chr_update_read_handler;
894 chr->chr_close = fd_chr_close;
895
fee204fd 896 qemu_chr_be_generic_open(chr);
6f97dba0
AL		 897
898 return chr;
899}
900
548cbb36 901static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
6f97dba0
AL		 902{
903 int fd_in, fd_out;
904 char filename_in[256], filename_out[256];
548cbb36 905 const char *filename = opts->device;
7d31544f
GH		 906
907 if (filename == NULL) {
908 fprintf(stderr, "chardev: pipe: no filename given\n");
1f51470d 909 return NULL;
7d31544f 910 }
6f97dba0
AL		 911
912 snprintf(filename_in, 256, "%s.in", filename);
913 snprintf(filename_out, 256, "%s.out", filename);
40ff6d7e
KW		 914 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
915 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
6f97dba0
AL		 916 if (fd_in < 0 || fd_out < 0) {
917 if (fd_in >= 0)
918 close(fd_in);
919 if (fd_out >= 0)
920 close(fd_out);
b181e047 921 TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
a89dd6c3 922 if (fd_in < 0) {
1f51470d 923 return NULL;
a89dd6c3 924 }
6f97dba0 925 }
1f51470d 926 return qemu_chr_open_fd(fd_in, fd_out);
6f97dba0
AL		 927}
928
6f97dba0
AL		 929/* init terminal so that we can grab keys */
930static struct termios oldtty;
931static int old_fd0_flags;
bb002513 932static bool stdio_allow_signal;
6f97dba0
AL		 933
934static void term_exit(void)
935{
936 tcsetattr (0, TCSANOW, &oldtty);
937 fcntl(0, F_SETFL, old_fd0_flags);
938}
939
bb002513 940static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
6f97dba0
AL		 941{
942 struct termios tty;
943
0369364b 944 tty = oldtty;
bb002513
PB		 945 if (!echo) {
946 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
6f97dba0 947 |INLCR|IGNCR|ICRNL|IXON);
bb002513
PB		 948 tty.c_oflag |= OPOST;
949 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
950 tty.c_cflag &= ~(CSIZE|PARENB);
951 tty.c_cflag |= CS8;
952 tty.c_cc[VMIN] = 1;
953 tty.c_cc[VTIME] = 0;
954 }
6f97dba0 955 /* if graphical mode, we allow Ctrl-C handling */
bb002513 956 if (!stdio_allow_signal)
6f97dba0 957 tty.c_lflag &= ~ISIG;
6f97dba0
AL		 958
959 tcsetattr (0, TCSANOW, &tty);
6f97dba0
AL		 960}
961
962static void qemu_chr_close_stdio(struct CharDriverState *chr)
963{
964 term_exit();
6f97dba0
AL		 965 fd_chr_close(chr);
966}
967
7c358031 968static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
6f97dba0
AL		 969{
970 CharDriverState *chr;
971
ab51b1d5
MT		 972 if (is_daemonized()) {
973 error_report("cannot use stdio with -daemonize");
974 return NULL;
975 }
ed7a1540
AL		 976 old_fd0_flags = fcntl(0, F_GETFL);
977 tcgetattr (0, &oldtty);
978 fcntl(0, F_SETFL, O_NONBLOCK);
979 atexit(term_exit);
0369364b 980
6f97dba0
AL		 981 chr = qemu_chr_open_fd(0, 1);
982 chr->chr_close = qemu_chr_close_stdio;
bb002513 983 chr->chr_set_echo = qemu_chr_set_echo_stdio;
7c358031
GH		 984 stdio_allow_signal = display_type != DT_NOGRAPHIC;
985 if (opts->has_signal) {
986 stdio_allow_signal = opts->signal;
987 }
15f31519 988 qemu_chr_fe_set_echo(chr, false);
6f97dba0 989
1f51470d 990 return chr;
6f97dba0
AL		 991}
992
993#ifdef __sun__
994/* Once Solaris has openpty(), this is going to be removed. */
3f4cb3d3
BS		 995static int openpty(int *amaster, int *aslave, char *name,
996 struct termios *termp, struct winsize *winp)
6f97dba0
AL		 997{
998 const char *slave;
999 int mfd = -1, sfd = -1;
1000
1001 *amaster = *aslave = -1;
1002
1003 mfd = open("/dev/ptmx", O_RDWR | O_NOCTTY);
1004 if (mfd < 0)
1005 goto err;
1006
1007 if (grantpt(mfd) == -1 || unlockpt(mfd) == -1)
1008 goto err;
1009
1010 if ((slave = ptsname(mfd)) == NULL)
1011 goto err;
1012
1013 if ((sfd = open(slave, O_RDONLY | O_NOCTTY)) == -1)
1014 goto err;
1015
1016 if (ioctl(sfd, I_PUSH, "ptem") == -1 ||
1017 (termp != NULL && tcgetattr(sfd, termp) < 0))
1018 goto err;
1019
1020 if (amaster)
1021 *amaster = mfd;
1022 if (aslave)
1023 *aslave = sfd;
1024 if (winp)
1025 ioctl(sfd, TIOCSWINSZ, winp);
1026
1027 return 0;
1028
1029err:
1030 if (sfd != -1)
1031 close(sfd);
1032 close(mfd);
1033 return -1;
1034}
1035
3f4cb3d3 1036static void cfmakeraw (struct termios *termios_p)
6f97dba0
AL		 1037{
1038 termios_p->c_iflag &=
1039 ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
1040 termios_p->c_oflag &= ~OPOST;
1041 termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
1042 termios_p->c_cflag &= ~(CSIZE|PARENB);
1043 termios_p->c_cflag |= CS8;
1044
1045 termios_p->c_cc[VMIN] = 0;
1046 termios_p->c_cc[VTIME] = 0;
1047}
1048#endif
1049
1050#if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
a167ba50
AJ		 1051 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
1052 || defined(__GLIBC__)
6f97dba0 1053
e551498e
GH		 1054#define HAVE_CHARDEV_TTY 1
1055
6f97dba0 1056typedef struct {
093d3a20
AL		 1057 GIOChannel *fd;
1058 guint fd_tag;
6f97dba0 1059 int connected;
6f97dba0 1060 int read_bytes;
8aa33caf 1061 guint timer_tag;
6f97dba0
AL		 1062} PtyCharDriver;
1063
1064static void pty_chr_update_read_handler(CharDriverState *chr);
1065static void pty_chr_state(CharDriverState *chr, int connected);
1066
8aa33caf
AL		 1067static gboolean pty_chr_timer(gpointer opaque)
1068{
1069 struct CharDriverState *chr = opaque;
1070 PtyCharDriver *s = chr->opaque;
1071
1072 if (s->connected) {
1073 goto out;
1074 }
8aa33caf
AL		 1075
1076 /* Next poll ... */
1077 pty_chr_update_read_handler(chr);
1078
1079out:
1080 return FALSE;
1081}
1082
1083static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
1084{
1085 PtyCharDriver *s = chr->opaque;
1086
1087 if (s->timer_tag) {
1088 g_source_remove(s->timer_tag);
1089 s->timer_tag = 0;
1090 }
1091
1092 if (ms == 1000) {
1093 s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
1094 } else {
1095 s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
1096 }
1097}
1098
6f97dba0
AL		 1099static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1100{
1101 PtyCharDriver *s = chr->opaque;
1102
1103 if (!s->connected) {
1104 /* guest sends data, check for (re-)connect */
1105 pty_chr_update_read_handler(chr);
1106 return 0;
1107 }
684a096e 1108 return io_channel_send(s->fd, buf, len);
6f97dba0
AL		 1109}
1110
e6a87ed8
AL		 1111static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1112{
1113 PtyCharDriver *s = chr->opaque;
1114 return g_io_create_watch(s->fd, cond);
1115}
1116
6f97dba0
AL		 1117static int pty_chr_read_poll(void *opaque)
1118{
1119 CharDriverState *chr = opaque;
1120 PtyCharDriver *s = chr->opaque;
1121
909cda12 1122 s->read_bytes = qemu_chr_be_can_write(chr);
6f97dba0
AL		 1123 return s->read_bytes;
1124}
1125
093d3a20 1126static gboolean pty_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 1127{
1128 CharDriverState *chr = opaque;
1129 PtyCharDriver *s = chr->opaque;
093d3a20 1130 gsize size, len;
9bd7854e 1131 uint8_t buf[READ_BUF_LEN];
093d3a20 1132 GIOStatus status;
6f97dba0
AL		 1133
1134 len = sizeof(buf);
1135 if (len > s->read_bytes)
1136 len = s->read_bytes;
cdbf6e16
PB		 1137 if (len == 0) {
1138 return TRUE;
1139 }
093d3a20
AL		 1140 status = g_io_channel_read_chars(s->fd, (gchar *)buf, len, &size, NULL);
1141 if (status != G_IO_STATUS_NORMAL) {
6f97dba0 1142 pty_chr_state(chr, 0);
093d3a20
AL		 1143 return FALSE;
1144 } else {
6f97dba0 1145 pty_chr_state(chr, 1);
fa5efccb 1146 qemu_chr_be_write(chr, buf, size);
6f97dba0 1147 }
093d3a20 1148 return TRUE;
6f97dba0
AL		 1149}
1150
1151static void pty_chr_update_read_handler(CharDriverState *chr)
1152{
1153 PtyCharDriver *s = chr->opaque;
85a67692 1154 GPollFD pfd;
6f97dba0 1155
85a67692
PB		 1156 pfd.fd = g_io_channel_unix_get_fd(s->fd);
1157 pfd.events = G_IO_OUT;
1158 pfd.revents = 0;
1159 g_poll(&pfd, 1, 0);
1160 if (pfd.revents & G_IO_HUP) {
1161 pty_chr_state(chr, 0);
1162 } else {
1163 pty_chr_state(chr, 1);
093d3a20 1164 }
6f97dba0
AL		 1165}
1166
1167static void pty_chr_state(CharDriverState *chr, int connected)
1168{
1169 PtyCharDriver *s = chr->opaque;
1170
1171 if (!connected) {
910b6368 1172 if (s->fd_tag) {
2b316774 1173 io_remove_watch_poll(s->fd_tag);
910b6368
PB		 1174 s->fd_tag = 0;
1175 }
6f97dba0 1176 s->connected = 0;
6f97dba0
AL		 1177 /* (re-)connect poll interval for idle guests: once per second.
1178 * We check more frequently in case the guests sends data to
1179 * the virtual device linked to our pty. */
8aa33caf 1180 pty_chr_rearm_timer(chr, 1000);
6f97dba0 1181 } else {
85a67692
PB		 1182 if (s->timer_tag) {
1183 g_source_remove(s->timer_tag);
1184 s->timer_tag = 0;
1185 }
1186 if (!s->connected) {
fee204fd 1187 qemu_chr_be_generic_open(chr);
85a67692
PB		 1188 s->connected = 1;
1189 s->fd_tag = io_add_watch_poll(s->fd, pty_chr_read_poll, pty_chr_read, chr);
1190 }
6f97dba0
AL		 1191 }
1192}
1193
6f97dba0
AL		 1194
1195static void pty_chr_close(struct CharDriverState *chr)
1196{
1197 PtyCharDriver *s = chr->opaque;
093d3a20 1198 int fd;
6f97dba0 1199
093d3a20 1200 if (s->fd_tag) {
2b316774 1201 io_remove_watch_poll(s->fd_tag);
910b6368 1202 s->fd_tag = 0;
093d3a20
AL		 1203 }
1204 fd = g_io_channel_unix_get_fd(s->fd);
1205 g_io_channel_unref(s->fd);
1206 close(fd);
8aa33caf
AL		 1207 if (s->timer_tag) {
1208 g_source_remove(s->timer_tag);
910b6368 1209 s->timer_tag = 0;
8aa33caf 1210 }
7267c094 1211 g_free(s);
a425d23f 1212 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1213}
1214
e68c5958
GH		 1215static CharDriverState *qemu_chr_open_pty(const char *id,
1216 ChardevReturn *ret)
6f97dba0
AL		 1217{
1218 CharDriverState *chr;
1219 PtyCharDriver *s;
1220 struct termios tty;
e68c5958 1221 int master_fd, slave_fd;
c5e97233 1222#if defined(__OpenBSD__) || defined(__DragonFly__)
6f97dba0
AL		 1223 char pty_name[PATH_MAX];
1224#define q_ptsname(x) pty_name
1225#else
1226 char *pty_name = NULL;
1227#define q_ptsname(x) ptsname(x)
1228#endif
1229
a4e26048 1230 if (openpty(&master_fd, &slave_fd, pty_name, NULL, NULL) < 0) {
1f51470d 1231 return NULL;
6f97dba0
AL		 1232 }
1233
1234 /* Set raw attributes on the pty. */
c3b972c3 1235 tcgetattr(slave_fd, &tty);
6f97dba0
AL		 1236 cfmakeraw(&tty);
1237 tcsetattr(slave_fd, TCSAFLUSH, &tty);
1238 close(slave_fd);
1239
a4e26048
MA		 1240 chr = g_malloc0(sizeof(CharDriverState));
1241
e68c5958
GH		 1242 chr->filename = g_strdup_printf("pty:%s", q_ptsname(master_fd));
1243 ret->pty = g_strdup(q_ptsname(master_fd));
1244 ret->has_pty = true;
58650218 1245
e68c5958
GH		 1246 fprintf(stderr, "char device redirected to %s (label %s)\n",
1247 q_ptsname(master_fd), id);
6f97dba0 1248
a4e26048 1249 s = g_malloc0(sizeof(PtyCharDriver));
6f97dba0
AL		 1250 chr->opaque = s;
1251 chr->chr_write = pty_chr_write;
1252 chr->chr_update_read_handler = pty_chr_update_read_handler;
1253 chr->chr_close = pty_chr_close;
e6a87ed8 1254 chr->chr_add_watch = pty_chr_add_watch;
6f97dba0 1255
093d3a20 1256 s->fd = io_channel_from_fd(master_fd);
8aa33caf 1257 s->timer_tag = 0;
6f97dba0 1258
1f51470d 1259 return chr;
6f97dba0
AL		 1260}
1261
1262static void tty_serial_init(int fd, int speed,
1263 int parity, int data_bits, int stop_bits)
1264{
1265 struct termios tty;
1266 speed_t spd;
1267
1268#if 0
1269 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1270 speed, parity, data_bits, stop_bits);
1271#endif
1272 tcgetattr (fd, &tty);
1273
45eea13b
SW		 1274#define check_speed(val) if (speed <= val) { spd = B##val; break; }
1275 speed = speed * 10 / 11;
1276 do {
1277 check_speed(50);
1278 check_speed(75);
1279 check_speed(110);
1280 check_speed(134);
1281 check_speed(150);
1282 check_speed(200);
1283 check_speed(300);
1284 check_speed(600);
1285 check_speed(1200);
1286 check_speed(1800);
1287 check_speed(2400);
1288 check_speed(4800);
1289 check_speed(9600);
1290 check_speed(19200);
1291 check_speed(38400);
1292 /* Non-Posix values follow. They may be unsupported on some systems. */
1293 check_speed(57600);
1294 check_speed(115200);
1295#ifdef B230400
1296 check_speed(230400);
1297#endif
1298#ifdef B460800
1299 check_speed(460800);
1300#endif
1301#ifdef B500000
1302 check_speed(500000);
1303#endif
1304#ifdef B576000
1305 check_speed(576000);
1306#endif
1307#ifdef B921600
1308 check_speed(921600);
1309#endif
1310#ifdef B1000000
1311 check_speed(1000000);
1312#endif
1313#ifdef B1152000
1314 check_speed(1152000);
1315#endif
1316#ifdef B1500000
1317 check_speed(1500000);
1318#endif
1319#ifdef B2000000
1320 check_speed(2000000);
1321#endif
1322#ifdef B2500000
1323 check_speed(2500000);
1324#endif
1325#ifdef B3000000
1326 check_speed(3000000);
1327#endif
1328#ifdef B3500000
1329 check_speed(3500000);
1330#endif
1331#ifdef B4000000
1332 check_speed(4000000);
1333#endif
6f97dba0 1334 spd = B115200;
45eea13b 1335 } while (0);
6f97dba0
AL		 1336
1337 cfsetispeed(&tty, spd);
1338 cfsetospeed(&tty, spd);
1339
1340 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1341 |INLCR|IGNCR|ICRNL|IXON);
1342 tty.c_oflag |= OPOST;
1343 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1344 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1345 switch(data_bits) {
1346 default:
1347 case 8:
1348 tty.c_cflag |= CS8;
1349 break;
1350 case 7:
1351 tty.c_cflag |= CS7;
1352 break;
1353 case 6:
1354 tty.c_cflag |= CS6;
1355 break;
1356 case 5:
1357 tty.c_cflag |= CS5;
1358 break;
1359 }
1360 switch(parity) {
1361 default:
1362 case 'N':
1363 break;
1364 case 'E':
1365 tty.c_cflag |= PARENB;
1366 break;
1367 case 'O':
1368 tty.c_cflag |= PARENB | PARODD;
1369 break;
1370 }
1371 if (stop_bits == 2)
1372 tty.c_cflag |= CSTOPB;
1373
1374 tcsetattr (fd, TCSANOW, &tty);
1375}
1376
1377static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1378{
1379 FDCharDriver *s = chr->opaque;
1380
1381 switch(cmd) {
1382 case CHR_IOCTL_SERIAL_SET_PARAMS:
1383 {
1384 QEMUSerialSetParams *ssp = arg;
a29753f8
AL		 1385 tty_serial_init(g_io_channel_unix_get_fd(s->fd_in),
1386 ssp->speed, ssp->parity,
6f97dba0
AL		 1387 ssp->data_bits, ssp->stop_bits);
1388 }
1389 break;
1390 case CHR_IOCTL_SERIAL_SET_BREAK:
1391 {
1392 int enable = *(int *)arg;
a29753f8
AL		 1393 if (enable) {
1394 tcsendbreak(g_io_channel_unix_get_fd(s->fd_in), 1);
1395 }
6f97dba0
AL		 1396 }
1397 break;
1398 case CHR_IOCTL_SERIAL_GET_TIOCM:
1399 {
1400 int sarg = 0;
1401 int *targ = (int *)arg;
a29753f8 1402 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &sarg);
6f97dba0 1403 *targ = 0;
b4abdfa4 1404 if (sarg & TIOCM_CTS)
6f97dba0 1405 *targ |= CHR_TIOCM_CTS;
b4abdfa4 1406 if (sarg & TIOCM_CAR)
6f97dba0 1407 *targ |= CHR_TIOCM_CAR;
b4abdfa4 1408 if (sarg & TIOCM_DSR)
6f97dba0 1409 *targ |= CHR_TIOCM_DSR;
b4abdfa4 1410 if (sarg & TIOCM_RI)
6f97dba0 1411 *targ |= CHR_TIOCM_RI;
b4abdfa4 1412 if (sarg & TIOCM_DTR)
6f97dba0 1413 *targ |= CHR_TIOCM_DTR;
b4abdfa4 1414 if (sarg & TIOCM_RTS)
6f97dba0
AL		 1415 *targ |= CHR_TIOCM_RTS;
1416 }
1417 break;
1418 case CHR_IOCTL_SERIAL_SET_TIOCM:
1419 {
1420 int sarg = *(int *)arg;
1421 int targ = 0;
a29753f8 1422 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &targ);
b4abdfa4
AJ		 1423 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1424 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1425 if (sarg & CHR_TIOCM_CTS)
1426 targ |= TIOCM_CTS;
1427 if (sarg & CHR_TIOCM_CAR)
1428 targ |= TIOCM_CAR;
1429 if (sarg & CHR_TIOCM_DSR)
1430 targ |= TIOCM_DSR;
1431 if (sarg & CHR_TIOCM_RI)
1432 targ |= TIOCM_RI;
1433 if (sarg & CHR_TIOCM_DTR)
6f97dba0 1434 targ |= TIOCM_DTR;
b4abdfa4 1435 if (sarg & CHR_TIOCM_RTS)
6f97dba0 1436 targ |= TIOCM_RTS;
a29753f8 1437 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMSET, &targ);
6f97dba0
AL		 1438 }
1439 break;
1440 default:
1441 return -ENOTSUP;
1442 }
1443 return 0;
1444}
1445
4266a134
DA		 1446static void qemu_chr_close_tty(CharDriverState *chr)
1447{
1448 FDCharDriver *s = chr->opaque;
1449 int fd = -1;
1450
1451 if (s) {
a29753f8 1452 fd = g_io_channel_unix_get_fd(s->fd_in);
4266a134
DA		 1453 }
1454
1455 fd_chr_close(chr);
1456
1457 if (fd >= 0) {
1458 close(fd);
1459 }
1460}
1461
d59044ef
GH		 1462static CharDriverState *qemu_chr_open_tty_fd(int fd)
1463{
1464 CharDriverState *chr;
1465
1466 tty_serial_init(fd, 115200, 'N', 8, 1);
1467 chr = qemu_chr_open_fd(fd, fd);
1468 chr->chr_ioctl = tty_serial_ioctl;
1469 chr->chr_close = qemu_chr_close_tty;
1470 return chr;
1471}
6f97dba0
AL		 1472#endif /* __linux__ || __sun__ */
1473
1474#if defined(__linux__)
e551498e
GH		 1475
1476#define HAVE_CHARDEV_PARPORT 1
1477
6f97dba0
AL		 1478typedef struct {
1479 int fd;
1480 int mode;
1481} ParallelCharDriver;
1482
1483static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1484{
1485 if (s->mode != mode) {
1486 int m = mode;
1487 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1488 return 0;
1489 s->mode = mode;
1490 }
1491 return 1;
1492}
1493
1494static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1495{
1496 ParallelCharDriver *drv = chr->opaque;
1497 int fd = drv->fd;
1498 uint8_t b;
1499
1500 switch(cmd) {
1501 case CHR_IOCTL_PP_READ_DATA:
1502 if (ioctl(fd, PPRDATA, &b) < 0)
1503 return -ENOTSUP;
1504 *(uint8_t *)arg = b;
1505 break;
1506 case CHR_IOCTL_PP_WRITE_DATA:
1507 b = *(uint8_t *)arg;
1508 if (ioctl(fd, PPWDATA, &b) < 0)
1509 return -ENOTSUP;
1510 break;
1511 case CHR_IOCTL_PP_READ_CONTROL:
1512 if (ioctl(fd, PPRCONTROL, &b) < 0)
1513 return -ENOTSUP;
1514 /* Linux gives only the lowest bits, and no way to know data
1515 direction! For better compatibility set the fixed upper
1516 bits. */
1517 *(uint8_t *)arg = b | 0xc0;
1518 break;
1519 case CHR_IOCTL_PP_WRITE_CONTROL:
1520 b = *(uint8_t *)arg;
1521 if (ioctl(fd, PPWCONTROL, &b) < 0)
1522 return -ENOTSUP;
1523 break;
1524 case CHR_IOCTL_PP_READ_STATUS:
1525 if (ioctl(fd, PPRSTATUS, &b) < 0)
1526 return -ENOTSUP;
1527 *(uint8_t *)arg = b;
1528 break;
1529 case CHR_IOCTL_PP_DATA_DIR:
1530 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1531 return -ENOTSUP;
1532 break;
1533 case CHR_IOCTL_PP_EPP_READ_ADDR:
1534 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1535 struct ParallelIOArg *parg = arg;
1536 int n = read(fd, parg->buffer, parg->count);
1537 if (n != parg->count) {
1538 return -EIO;
1539 }
1540 }
1541 break;
1542 case CHR_IOCTL_PP_EPP_READ:
1543 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1544 struct ParallelIOArg *parg = arg;
1545 int n = read(fd, parg->buffer, parg->count);
1546 if (n != parg->count) {
1547 return -EIO;
1548 }
1549 }
1550 break;
1551 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1552 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1553 struct ParallelIOArg *parg = arg;
1554 int n = write(fd, parg->buffer, parg->count);
1555 if (n != parg->count) {
1556 return -EIO;
1557 }
1558 }
1559 break;
1560 case CHR_IOCTL_PP_EPP_WRITE:
1561 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1562 struct ParallelIOArg *parg = arg;
1563 int n = write(fd, parg->buffer, parg->count);
1564 if (n != parg->count) {
1565 return -EIO;
1566 }
1567 }
1568 break;
1569 default:
1570 return -ENOTSUP;
1571 }
1572 return 0;
1573}
1574
1575static void pp_close(CharDriverState *chr)
1576{
1577 ParallelCharDriver *drv = chr->opaque;
1578 int fd = drv->fd;
1579
1580 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1581 ioctl(fd, PPRELEASE);
1582 close(fd);
7267c094 1583 g_free(drv);
a425d23f 1584 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1585}
1586
88a946d3 1587static CharDriverState *qemu_chr_open_pp_fd(int fd)
6f97dba0
AL		 1588{
1589 CharDriverState *chr;
1590 ParallelCharDriver *drv;
6f97dba0
AL		 1591
1592 if (ioctl(fd, PPCLAIM) < 0) {
1593 close(fd);
1f51470d 1594 return NULL;
6f97dba0
AL		 1595 }
1596
7267c094 1597 drv = g_malloc0(sizeof(ParallelCharDriver));
6f97dba0
AL		 1598 drv->fd = fd;
1599 drv->mode = IEEE1284_MODE_COMPAT;
1600
7267c094 1601 chr = g_malloc0(sizeof(CharDriverState));
6f97dba0
AL		 1602 chr->chr_write = null_chr_write;
1603 chr->chr_ioctl = pp_ioctl;
1604 chr->chr_close = pp_close;
1605 chr->opaque = drv;
1606
fee204fd 1607 qemu_chr_be_generic_open(chr);
6f97dba0 1608
1f51470d 1609 return chr;
6f97dba0
AL		 1610}
1611#endif /* __linux__ */
1612
a167ba50 1613#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
e551498e
GH		 1614
1615#define HAVE_CHARDEV_PARPORT 1
1616
6972f935
BS		 1617static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1618{
e0efb993 1619 int fd = (int)(intptr_t)chr->opaque;
6972f935
BS		 1620 uint8_t b;
1621
1622 switch(cmd) {
1623 case CHR_IOCTL_PP_READ_DATA:
1624 if (ioctl(fd, PPIGDATA, &b) < 0)
1625 return -ENOTSUP;
1626 *(uint8_t *)arg = b;
1627 break;
1628 case CHR_IOCTL_PP_WRITE_DATA:
1629 b = *(uint8_t *)arg;
1630 if (ioctl(fd, PPISDATA, &b) < 0)
1631 return -ENOTSUP;
1632 break;
1633 case CHR_IOCTL_PP_READ_CONTROL:
1634 if (ioctl(fd, PPIGCTRL, &b) < 0)
1635 return -ENOTSUP;
1636 *(uint8_t *)arg = b;
1637 break;
1638 case CHR_IOCTL_PP_WRITE_CONTROL:
1639 b = *(uint8_t *)arg;
1640 if (ioctl(fd, PPISCTRL, &b) < 0)
1641 return -ENOTSUP;
1642 break;
1643 case CHR_IOCTL_PP_READ_STATUS:
1644 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1645 return -ENOTSUP;
1646 *(uint8_t *)arg = b;
1647 break;
1648 default:
1649 return -ENOTSUP;
1650 }
1651 return 0;
1652}
1653
88a946d3 1654static CharDriverState *qemu_chr_open_pp_fd(int fd)
6972f935
BS		 1655{
1656 CharDriverState *chr;
6972f935 1657
7267c094 1658 chr = g_malloc0(sizeof(CharDriverState));
e0efb993 1659 chr->opaque = (void *)(intptr_t)fd;
6972f935
BS		 1660 chr->chr_write = null_chr_write;
1661 chr->chr_ioctl = pp_ioctl;
1f51470d 1662 return chr;
6972f935
BS		 1663}
1664#endif
1665
6f97dba0
AL		 1666#else /* _WIN32 */
1667
1668typedef struct {
1669 int max_size;
1670 HANDLE hcom, hrecv, hsend;
1671 OVERLAPPED orecv, osend;
1672 BOOL fpipe;
1673 DWORD len;
1674} WinCharState;
1675
db418a0a
FC		 1676typedef struct {
1677 HANDLE hStdIn;
1678 HANDLE hInputReadyEvent;
1679 HANDLE hInputDoneEvent;
1680 HANDLE hInputThread;
1681 uint8_t win_stdio_buf;
1682} WinStdioCharState;
1683
6f97dba0
AL		 1684#define NSENDBUF 2048
1685#define NRECVBUF 2048
1686#define MAXCONNECT 1
1687#define NTIMEOUT 5000
1688
1689static int win_chr_poll(void *opaque);
1690static int win_chr_pipe_poll(void *opaque);
1691
1692static void win_chr_close(CharDriverState *chr)
1693{
1694 WinCharState *s = chr->opaque;
1695
1696 if (s->hsend) {
1697 CloseHandle(s->hsend);
1698 s->hsend = NULL;
1699 }
1700 if (s->hrecv) {
1701 CloseHandle(s->hrecv);
1702 s->hrecv = NULL;
1703 }
1704 if (s->hcom) {
1705 CloseHandle(s->hcom);
1706 s->hcom = NULL;
1707 }
1708 if (s->fpipe)
1709 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1710 else
1711 qemu_del_polling_cb(win_chr_poll, chr);
793cbfb5 1712
a425d23f 1713 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1714}
1715
1716static int win_chr_init(CharDriverState *chr, const char *filename)
1717{
1718 WinCharState *s = chr->opaque;
1719 COMMCONFIG comcfg;
1720 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1721 COMSTAT comstat;
1722 DWORD size;
1723 DWORD err;
1724
1725 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1726 if (!s->hsend) {
1727 fprintf(stderr, "Failed CreateEvent\n");
1728 goto fail;
1729 }
1730 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1731 if (!s->hrecv) {
1732 fprintf(stderr, "Failed CreateEvent\n");
1733 goto fail;
1734 }
1735
1736 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1737 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1738 if (s->hcom == INVALID_HANDLE_VALUE) {
1739 fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
1740 s->hcom = NULL;
1741 goto fail;
1742 }
1743
1744 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
1745 fprintf(stderr, "Failed SetupComm\n");
1746 goto fail;
1747 }
1748
1749 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1750 size = sizeof(COMMCONFIG);
1751 GetDefaultCommConfig(filename, &comcfg, &size);
1752 comcfg.dcb.DCBlength = sizeof(DCB);
1753 CommConfigDialog(filename, NULL, &comcfg);
1754
1755 if (!SetCommState(s->hcom, &comcfg.dcb)) {
1756 fprintf(stderr, "Failed SetCommState\n");
1757 goto fail;
1758 }
1759
1760 if (!SetCommMask(s->hcom, EV_ERR)) {
1761 fprintf(stderr, "Failed SetCommMask\n");
1762 goto fail;
1763 }
1764
1765 cto.ReadIntervalTimeout = MAXDWORD;
1766 if (!SetCommTimeouts(s->hcom, &cto)) {
1767 fprintf(stderr, "Failed SetCommTimeouts\n");
1768 goto fail;
1769 }
1770
1771 if (!ClearCommError(s->hcom, &err, &comstat)) {
1772 fprintf(stderr, "Failed ClearCommError\n");
1773 goto fail;
1774 }
1775 qemu_add_polling_cb(win_chr_poll, chr);
1776 return 0;
1777
1778 fail:
1779 win_chr_close(chr);
1780 return -1;
1781}
1782
1783static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1784{
1785 WinCharState *s = chr->opaque;
1786 DWORD len, ret, size, err;
1787
1788 len = len1;
1789 ZeroMemory(&s->osend, sizeof(s->osend));
1790 s->osend.hEvent = s->hsend;
1791 while (len > 0) {
1792 if (s->hsend)
1793 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1794 else
1795 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1796 if (!ret) {
1797 err = GetLastError();
1798 if (err == ERROR_IO_PENDING) {
1799 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1800 if (ret) {
1801 buf += size;
1802 len -= size;
1803 } else {
1804 break;
1805 }
1806 } else {
1807 break;
1808 }
1809 } else {
1810 buf += size;
1811 len -= size;
1812 }
1813 }
1814 return len1 - len;
1815}
1816
1817static int win_chr_read_poll(CharDriverState *chr)
1818{
1819 WinCharState *s = chr->opaque;
1820
909cda12 1821 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 1822 return s->max_size;
1823}
1824
1825static void win_chr_readfile(CharDriverState *chr)
1826{
1827 WinCharState *s = chr->opaque;
1828 int ret, err;
9bd7854e 1829 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 1830 DWORD size;
1831
1832 ZeroMemory(&s->orecv, sizeof(s->orecv));
1833 s->orecv.hEvent = s->hrecv;
1834 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
1835 if (!ret) {
1836 err = GetLastError();
1837 if (err == ERROR_IO_PENDING) {
1838 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
1839 }
1840 }
1841
1842 if (size > 0) {
fa5efccb 1843 qemu_chr_be_write(chr, buf, size);
6f97dba0
AL		 1844 }
1845}
1846
1847static void win_chr_read(CharDriverState *chr)
1848{
1849 WinCharState *s = chr->opaque;
1850
1851 if (s->len > s->max_size)
1852 s->len = s->max_size;
1853 if (s->len == 0)
1854 return;
1855
1856 win_chr_readfile(chr);
1857}
1858
1859static int win_chr_poll(void *opaque)
1860{
1861 CharDriverState *chr = opaque;
1862 WinCharState *s = chr->opaque;
1863 COMSTAT status;
1864 DWORD comerr;
1865
1866 ClearCommError(s->hcom, &comerr, &status);
1867 if (status.cbInQue > 0) {
1868 s->len = status.cbInQue;
1869 win_chr_read_poll(chr);
1870 win_chr_read(chr);
1871 return 1;
1872 }
1873 return 0;
1874}
1875
d59044ef 1876static CharDriverState *qemu_chr_open_win_path(const char *filename)
6f97dba0
AL		 1877{
1878 CharDriverState *chr;
1879 WinCharState *s;
1880
7267c094
AL		 1881 chr = g_malloc0(sizeof(CharDriverState));
1882 s = g_malloc0(sizeof(WinCharState));
6f97dba0
AL		 1883 chr->opaque = s;
1884 chr->chr_write = win_chr_write;
1885 chr->chr_close = win_chr_close;
1886
1887 if (win_chr_init(chr, filename) < 0) {
2e02e18b
SW		 1888 g_free(s);
1889 g_free(chr);
1f51470d 1890 return NULL;
6f97dba0 1891 }
fee204fd 1892 qemu_chr_be_generic_open(chr);
1f51470d 1893 return chr;
6f97dba0
AL		 1894}
1895
1896static int win_chr_pipe_poll(void *opaque)
1897{
1898 CharDriverState *chr = opaque;
1899 WinCharState *s = chr->opaque;
1900 DWORD size;
1901
1902 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
1903 if (size > 0) {
1904 s->len = size;
1905 win_chr_read_poll(chr);
1906 win_chr_read(chr);
1907 return 1;
1908 }
1909 return 0;
1910}
1911
1912static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
1913{
1914 WinCharState *s = chr->opaque;
1915 OVERLAPPED ov;
1916 int ret;
1917 DWORD size;
1918 char openname[256];
1919
1920 s->fpipe = TRUE;
1921
1922 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1923 if (!s->hsend) {
1924 fprintf(stderr, "Failed CreateEvent\n");
1925 goto fail;
1926 }
1927 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1928 if (!s->hrecv) {
1929 fprintf(stderr, "Failed CreateEvent\n");
1930 goto fail;
1931 }
1932
1933 snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
1934 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
1935 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
1936 PIPE_WAIT,
1937 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
1938 if (s->hcom == INVALID_HANDLE_VALUE) {
1939 fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
1940 s->hcom = NULL;
1941 goto fail;
1942 }
1943
1944 ZeroMemory(&ov, sizeof(ov));
1945 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
1946 ret = ConnectNamedPipe(s->hcom, &ov);
1947 if (ret) {
1948 fprintf(stderr, "Failed ConnectNamedPipe\n");
1949 goto fail;
1950 }
1951
1952 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
1953 if (!ret) {
1954 fprintf(stderr, "Failed GetOverlappedResult\n");
1955 if (ov.hEvent) {
1956 CloseHandle(ov.hEvent);
1957 ov.hEvent = NULL;
1958 }
1959 goto fail;
1960 }
1961
1962 if (ov.hEvent) {
1963 CloseHandle(ov.hEvent);
1964 ov.hEvent = NULL;
1965 }
1966 qemu_add_polling_cb(win_chr_pipe_poll, chr);
1967 return 0;
1968
1969 fail:
1970 win_chr_close(chr);
1971 return -1;
1972}
1973
1974
548cbb36 1975static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
6f97dba0 1976{
548cbb36 1977 const char *filename = opts->device;
6f97dba0
AL		 1978 CharDriverState *chr;
1979 WinCharState *s;
1980
7267c094
AL		 1981 chr = g_malloc0(sizeof(CharDriverState));
1982 s = g_malloc0(sizeof(WinCharState));
6f97dba0
AL		 1983 chr->opaque = s;
1984 chr->chr_write = win_chr_write;
1985 chr->chr_close = win_chr_close;
1986
1987 if (win_chr_pipe_init(chr, filename) < 0) {
2e02e18b
SW		 1988 g_free(s);
1989 g_free(chr);
1f51470d 1990 return NULL;
6f97dba0 1991 }
fee204fd 1992 qemu_chr_be_generic_open(chr);
1f51470d 1993 return chr;
6f97dba0
AL		 1994}
1995
1f51470d 1996static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
6f97dba0
AL		 1997{
1998 CharDriverState *chr;
1999 WinCharState *s;
2000
7267c094
AL		 2001 chr = g_malloc0(sizeof(CharDriverState));
2002 s = g_malloc0(sizeof(WinCharState));
6f97dba0
AL		 2003 s->hcom = fd_out;
2004 chr->opaque = s;
2005 chr->chr_write = win_chr_write;
fee204fd 2006 qemu_chr_be_generic_open(chr);
1f51470d 2007 return chr;
6f97dba0
AL		 2008}
2009
d9ac374f 2010static CharDriverState *qemu_chr_open_win_con(void)
6f97dba0 2011{
1f51470d 2012 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
6f97dba0
AL		 2013}
2014
db418a0a
FC		 2015static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
2016{
2017 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
2018 DWORD dwSize;
2019 int len1;
2020
2021 len1 = len;
2022
2023 while (len1 > 0) {
2024 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
2025 break;
2026 }
2027 buf += dwSize;
2028 len1 -= dwSize;
2029 }
2030
2031 return len - len1;
2032}
2033
2034static void win_stdio_wait_func(void *opaque)
2035{
2036 CharDriverState *chr = opaque;
2037 WinStdioCharState *stdio = chr->opaque;
2038 INPUT_RECORD buf[4];
2039 int ret;
2040 DWORD dwSize;
2041 int i;
2042
2043 ret = ReadConsoleInput(stdio->hStdIn, buf, sizeof(buf) / sizeof(*buf),
2044 &dwSize);
2045
2046 if (!ret) {
2047 /* Avoid error storm */
2048 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2049 return;
2050 }
2051
2052 for (i = 0; i < dwSize; i++) {
2053 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
2054
2055 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
2056 int j;
2057 if (kev->uChar.AsciiChar != 0) {
2058 for (j = 0; j < kev->wRepeatCount; j++) {
2059 if (qemu_chr_be_can_write(chr)) {
2060 uint8_t c = kev->uChar.AsciiChar;
2061 qemu_chr_be_write(chr, &c, 1);
2062 }
2063 }
2064 }
2065 }
2066 }
2067}
2068
2069static DWORD WINAPI win_stdio_thread(LPVOID param)
2070{
2071 CharDriverState *chr = param;
2072 WinStdioCharState *stdio = chr->opaque;
2073 int ret;
2074 DWORD dwSize;
2075
2076 while (1) {
2077
2078 /* Wait for one byte */
2079 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
2080
2081 /* Exit in case of error, continue if nothing read */
2082 if (!ret) {
2083 break;
2084 }
2085 if (!dwSize) {
2086 continue;
2087 }
2088
2089 /* Some terminal emulator returns \r\n for Enter, just pass \n */
2090 if (stdio->win_stdio_buf == '\r') {
2091 continue;
2092 }
2093
2094 /* Signal the main thread and wait until the byte was eaten */
2095 if (!SetEvent(stdio->hInputReadyEvent)) {
2096 break;
2097 }
2098 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
2099 != WAIT_OBJECT_0) {
2100 break;
2101 }
2102 }
2103
2104 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2105 return 0;
2106}
2107
2108static void win_stdio_thread_wait_func(void *opaque)
2109{
2110 CharDriverState *chr = opaque;
2111 WinStdioCharState *stdio = chr->opaque;
2112
2113 if (qemu_chr_be_can_write(chr)) {
2114 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
2115 }
2116
2117 SetEvent(stdio->hInputDoneEvent);
2118}
2119
2120static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
2121{
2122 WinStdioCharState *stdio = chr->opaque;
2123 DWORD dwMode = 0;
2124
2125 GetConsoleMode(stdio->hStdIn, &dwMode);
2126
2127 if (echo) {
2128 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
2129 } else {
2130 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
2131 }
2132}
2133
2134static void win_stdio_close(CharDriverState *chr)
2135{
2136 WinStdioCharState *stdio = chr->opaque;
2137
2138 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
2139 CloseHandle(stdio->hInputReadyEvent);
2140 }
2141 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
2142 CloseHandle(stdio->hInputDoneEvent);
2143 }
2144 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
2145 TerminateThread(stdio->hInputThread, 0);
2146 }
2147
2148 g_free(chr->opaque);
2149 g_free(chr);
db418a0a
FC		 2150}
2151
7c358031 2152static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
db418a0a
FC		 2153{
2154 CharDriverState *chr;
2155 WinStdioCharState *stdio;
2156 DWORD dwMode;
2157 int is_console = 0;
2158
db418a0a
FC		 2159 chr = g_malloc0(sizeof(CharDriverState));
2160 stdio = g_malloc0(sizeof(WinStdioCharState));
2161
2162 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
2163 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
2164 fprintf(stderr, "cannot open stdio: invalid handle\n");
2165 exit(1);
2166 }
2167
2168 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
2169
2170 chr->opaque = stdio;
2171 chr->chr_write = win_stdio_write;
2172 chr->chr_close = win_stdio_close;
2173
ed7a1540
AL		 2174 if (is_console) {
2175 if (qemu_add_wait_object(stdio->hStdIn,
2176 win_stdio_wait_func, chr)) {
2177 fprintf(stderr, "qemu_add_wait_object: failed\n");
2178 }
2179 } else {
2180 DWORD dwId;
2181
2182 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2183 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2184 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
2185 chr, 0, &dwId);
2186
2187 if (stdio->hInputThread == INVALID_HANDLE_VALUE
2188 || stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
2189 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
2190 fprintf(stderr, "cannot create stdio thread or event\n");
2191 exit(1);
2192 }
2193 if (qemu_add_wait_object(stdio->hInputReadyEvent,
2194 win_stdio_thread_wait_func, chr)) {
2195 fprintf(stderr, "qemu_add_wait_object: failed\n");
db418a0a
FC		 2196 }
2197 }
2198
2199 dwMode |= ENABLE_LINE_INPUT;
2200
ed7a1540 2201 if (is_console) {
db418a0a
FC		 2202 /* set the terminal in raw mode */
2203 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2204 dwMode |= ENABLE_PROCESSED_INPUT;
2205 }
2206
2207 SetConsoleMode(stdio->hStdIn, dwMode);
2208
2209 chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
2210 qemu_chr_fe_set_echo(chr, false);
2211
1f51470d 2212 return chr;
db418a0a 2213}
6f97dba0
AL		 2214#endif /* !_WIN32 */
2215
5ab8211b 2216
6f97dba0
AL		 2217/***********************************************************/
2218/* UDP Net console */
2219
2220typedef struct {
2221 int fd;
76a9644b
AL		 2222 GIOChannel *chan;
2223 guint tag;
9bd7854e 2224 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2225 int bufcnt;
2226 int bufptr;
2227 int max_size;
2228} NetCharDriver;
2229
2230static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2231{
2232 NetCharDriver *s = chr->opaque;
76a9644b
AL		 2233 gsize bytes_written;
2234 GIOStatus status;
2235
2236 status = g_io_channel_write_chars(s->chan, (const gchar *)buf, len, &bytes_written, NULL);
2237 if (status == G_IO_STATUS_EOF) {
2238 return 0;
2239 } else if (status != G_IO_STATUS_NORMAL) {
2240 return -1;
2241 }
6f97dba0 2242
76a9644b 2243 return bytes_written;
6f97dba0
AL		 2244}
2245
2246static int udp_chr_read_poll(void *opaque)
2247{
2248 CharDriverState *chr = opaque;
2249 NetCharDriver *s = chr->opaque;
2250
909cda12 2251 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2252
2253 /* If there were any stray characters in the queue process them
2254 * first
2255 */
2256 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
fa5efccb 2257 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
6f97dba0 2258 s->bufptr++;
909cda12 2259 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2260 }
2261 return s->max_size;
2262}
2263
76a9644b 2264static gboolean udp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 2265{
2266 CharDriverState *chr = opaque;
2267 NetCharDriver *s = chr->opaque;
76a9644b
AL		 2268 gsize bytes_read = 0;
2269 GIOStatus status;
6f97dba0 2270
cdbf6e16
PB		 2271 if (s->max_size == 0) {
2272 return TRUE;
2273 }
76a9644b
AL		 2274 status = g_io_channel_read_chars(s->chan, (gchar *)s->buf, sizeof(s->buf),
2275 &bytes_read, NULL);
2276 s->bufcnt = bytes_read;
6f97dba0 2277 s->bufptr = s->bufcnt;
76a9644b 2278 if (status != G_IO_STATUS_NORMAL) {
cdbf6e16 2279 if (s->tag) {
2b316774 2280 io_remove_watch_poll(s->tag);
cdbf6e16
PB		 2281 s->tag = 0;
2282 }
76a9644b
AL		 2283 return FALSE;
2284 }
6f97dba0
AL		 2285
2286 s->bufptr = 0;
2287 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
fa5efccb 2288 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
6f97dba0 2289 s->bufptr++;
909cda12 2290 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0 2291 }
76a9644b
AL		 2292
2293 return TRUE;
6f97dba0
AL		 2294}
2295
2296static void udp_chr_update_read_handler(CharDriverState *chr)
2297{
2298 NetCharDriver *s = chr->opaque;
2299
76a9644b 2300 if (s->tag) {
2b316774 2301 io_remove_watch_poll(s->tag);
76a9644b
AL		 2302 s->tag = 0;
2303 }
2304
2305 if (s->chan) {
2306 s->tag = io_add_watch_poll(s->chan, udp_chr_read_poll, udp_chr_read, chr);
6f97dba0
AL		 2307 }
2308}
2309
819f56b7
AL		 2310static void udp_chr_close(CharDriverState *chr)
2311{
2312 NetCharDriver *s = chr->opaque;
76a9644b 2313 if (s->tag) {
2b316774 2314 io_remove_watch_poll(s->tag);
910b6368 2315 s->tag = 0;
76a9644b
AL		 2316 }
2317 if (s->chan) {
2318 g_io_channel_unref(s->chan);
819f56b7
AL		 2319 closesocket(s->fd);
2320 }
7267c094 2321 g_free(s);
a425d23f 2322 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
819f56b7
AL		 2323}
2324
3ecc059d 2325static CharDriverState *qemu_chr_open_udp_fd(int fd)
6f97dba0
AL		 2326{
2327 CharDriverState *chr = NULL;
2328 NetCharDriver *s = NULL;
6f97dba0 2329
7267c094
AL		 2330 chr = g_malloc0(sizeof(CharDriverState));
2331 s = g_malloc0(sizeof(NetCharDriver));
6f97dba0 2332
6f97dba0 2333 s->fd = fd;
76a9644b 2334 s->chan = io_channel_from_socket(s->fd);
6f97dba0
AL		 2335 s->bufcnt = 0;
2336 s->bufptr = 0;
2337 chr->opaque = s;
2338 chr->chr_write = udp_chr_write;
2339 chr->chr_update_read_handler = udp_chr_update_read_handler;
819f56b7 2340 chr->chr_close = udp_chr_close;
1f51470d 2341 return chr;
3ecc059d 2342}
6f97dba0 2343
3ecc059d
GH		 2344static CharDriverState *qemu_chr_open_udp(QemuOpts *opts)
2345{
2346 Error *local_err = NULL;
2347 int fd = -1;
2348
2349 fd = inet_dgram_opts(opts, &local_err);
2350 if (fd < 0) {
2351 return NULL;
6e1db57b 2352 }
3ecc059d 2353 return qemu_chr_open_udp_fd(fd);
6f97dba0
AL		 2354}
2355
2356/***********************************************************/
2357/* TCP Net console */
2358
2359typedef struct {
2ea5a7af
AL		 2360
2361 GIOChannel *chan, *listen_chan;
2362 guint tag, listen_tag;
6f97dba0
AL		 2363 int fd, listen_fd;
2364 int connected;
2365 int max_size;
2366 int do_telnetopt;
2367 int do_nodelay;
2368 int is_unix;
7d174059 2369 int msgfd;
6f97dba0
AL		 2370} TCPCharDriver;
2371
2ea5a7af 2372static gboolean tcp_chr_accept(GIOChannel *chan, GIOCondition cond, void *opaque);
6f97dba0
AL		 2373
2374static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2375{
2376 TCPCharDriver *s = chr->opaque;
2377 if (s->connected) {
684a096e 2378 return io_channel_send(s->chan, buf, len);
455aa1e0 2379 } else {
6db0fdce 2380 /* XXX: indicate an error ? */
455aa1e0 2381 return len;
6f97dba0
AL		 2382 }
2383}
2384
2385static int tcp_chr_read_poll(void *opaque)
2386{
2387 CharDriverState *chr = opaque;
2388 TCPCharDriver *s = chr->opaque;
2389 if (!s->connected)
2390 return 0;
909cda12 2391 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2392 return s->max_size;
2393}
2394
2395#define IAC 255
2396#define IAC_BREAK 243
2397static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
2398 TCPCharDriver *s,
2399 uint8_t *buf, int *size)
2400{
2401 /* Handle any telnet client's basic IAC options to satisfy char by
2402 * char mode with no echo. All IAC options will be removed from
2403 * the buf and the do_telnetopt variable will be used to track the
2404 * state of the width of the IAC information.
2405 *
2406 * IAC commands come in sets of 3 bytes with the exception of the
2407 * "IAC BREAK" command and the double IAC.
2408 */
2409
2410 int i;
2411 int j = 0;
2412
2413 for (i = 0; i < *size; i++) {
2414 if (s->do_telnetopt > 1) {
2415 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2416 /* Double IAC means send an IAC */
2417 if (j != i)
2418 buf[j] = buf[i];
2419 j++;
2420 s->do_telnetopt = 1;
2421 } else {
2422 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2423 /* Handle IAC break commands by sending a serial break */
a425d23f 2424 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
6f97dba0
AL		 2425 s->do_telnetopt++;
2426 }
2427 s->do_telnetopt++;
2428 }
2429 if (s->do_telnetopt >= 4) {
2430 s->do_telnetopt = 1;
2431 }
2432 } else {
2433 if ((unsigned char)buf[i] == IAC) {
2434 s->do_telnetopt = 2;
2435 } else {
2436 if (j != i)
2437 buf[j] = buf[i];
2438 j++;
2439 }
2440 }
2441 }
2442 *size = j;
2443}
2444
7d174059
MM		 2445static int tcp_get_msgfd(CharDriverState *chr)
2446{
2447 TCPCharDriver *s = chr->opaque;
e53f27b9
PB		 2448 int fd = s->msgfd;
2449 s->msgfd = -1;
2450 return fd;
7d174059
MM		 2451}
2452
73bcc2ac 2453#ifndef _WIN32
7d174059
MM		 2454static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
2455{
2456 TCPCharDriver *s = chr->opaque;
2457 struct cmsghdr *cmsg;
2458
2459 for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
2460 int fd;
2461
2462 if (cmsg->cmsg_len != CMSG_LEN(sizeof(int)) ||
2463 cmsg->cmsg_level != SOL_SOCKET ||
2464 cmsg->cmsg_type != SCM_RIGHTS)
2465 continue;
2466
2467 fd = *((int *)CMSG_DATA(cmsg));
2468 if (fd < 0)
2469 continue;
2470
9b938c72
SH		 2471 /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
2472 qemu_set_block(fd);
2473
06138651
CB		 2474#ifndef MSG_CMSG_CLOEXEC
2475 qemu_set_cloexec(fd);
2476#endif
7d174059
MM		 2477 if (s->msgfd != -1)
2478 close(s->msgfd);
2479 s->msgfd = fd;
2480 }
2481}
2482
9977c894
MM		 2483static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2484{
2485 TCPCharDriver *s = chr->opaque;
7cba04f6 2486 struct msghdr msg = { NULL, };
9977c894 2487 struct iovec iov[1];
7d174059
MM		 2488 union {
2489 struct cmsghdr cmsg;
2490 char control[CMSG_SPACE(sizeof(int))];
2491 } msg_control;
06138651 2492 int flags = 0;
7d174059 2493 ssize_t ret;
9977c894
MM		 2494
2495 iov[0].iov_base = buf;
2496 iov[0].iov_len = len;
2497
2498 msg.msg_iov = iov;
2499 msg.msg_iovlen = 1;
7d174059
MM		 2500 msg.msg_control = &msg_control;
2501 msg.msg_controllen = sizeof(msg_control);
2502
06138651
CB		 2503#ifdef MSG_CMSG_CLOEXEC
2504 flags |= MSG_CMSG_CLOEXEC;
2505#endif
2506 ret = recvmsg(s->fd, &msg, flags);
2507 if (ret > 0 && s->is_unix) {
7d174059 2508 unix_process_msgfd(chr, &msg);
06138651 2509 }
9977c894 2510
7d174059 2511 return ret;
9977c894
MM		 2512}
2513#else
2514static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2515{
2516 TCPCharDriver *s = chr->opaque;
00aa0040 2517 return qemu_recv(s->fd, buf, len, 0);
9977c894
MM		 2518}
2519#endif
2520
d3cc5bc4
AS		 2521static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
2522{
2523 TCPCharDriver *s = chr->opaque;
2524 return g_io_create_watch(s->chan, cond);
2525}
2526
2ea5a7af 2527static gboolean tcp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 2528{
2529 CharDriverState *chr = opaque;
2530 TCPCharDriver *s = chr->opaque;
9bd7854e 2531 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2532 int len, size;
2533
2ea5a7af 2534 if (!s->connected || s->max_size <= 0) {
cdbf6e16 2535 return TRUE;
2ea5a7af 2536 }
6f97dba0
AL		 2537 len = sizeof(buf);
2538 if (len > s->max_size)
2539 len = s->max_size;
9977c894 2540 size = tcp_chr_recv(chr, (void *)buf, len);
6f97dba0
AL		 2541 if (size == 0) {
2542 /* connection closed */
2543 s->connected = 0;
2ea5a7af
AL		 2544 if (s->listen_chan) {
2545 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr);
6f97dba0 2546 }
910b6368 2547 if (s->tag) {
2b316774 2548 io_remove_watch_poll(s->tag);
910b6368
PB		 2549 s->tag = 0;
2550 }
2ea5a7af
AL		 2551 g_io_channel_unref(s->chan);
2552 s->chan = NULL;
6f97dba0
AL		 2553 closesocket(s->fd);
2554 s->fd = -1;
a425d23f 2555 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 2556 } else if (size > 0) {
2557 if (s->do_telnetopt)
2558 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2559 if (size > 0)
fa5efccb 2560 qemu_chr_be_write(chr, buf, size);
6f97dba0 2561 }
2ea5a7af
AL		 2562
2563 return TRUE;
6f97dba0
AL		 2564}
2565
68c18d1c
BS		 2566#ifndef _WIN32
2567CharDriverState *qemu_chr_open_eventfd(int eventfd)
2568{
6cbf4c8c 2569 return qemu_chr_open_fd(eventfd, eventfd);
6cbf4c8c 2570}
68c18d1c 2571#endif
6cbf4c8c 2572
6f97dba0
AL		 2573static void tcp_chr_connect(void *opaque)
2574{
2575 CharDriverState *chr = opaque;
2576 TCPCharDriver *s = chr->opaque;
2577
2578 s->connected = 1;
2ea5a7af
AL		 2579 if (s->chan) {
2580 s->tag = io_add_watch_poll(s->chan, tcp_chr_read_poll, tcp_chr_read, chr);
bbdd2ad0 2581 }
fee204fd 2582 qemu_chr_be_generic_open(chr);
6f97dba0
AL		 2583}
2584
2585#define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
2586static void tcp_chr_telnet_init(int fd)
2587{
2588 char buf[3];
2589 /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
2590 IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2591 send(fd, (char *)buf, 3, 0);
2592 IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2593 send(fd, (char *)buf, 3, 0);
2594 IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2595 send(fd, (char *)buf, 3, 0);
2596 IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2597 send(fd, (char *)buf, 3, 0);
2598}
2599
13661089
DB		 2600static int tcp_chr_add_client(CharDriverState *chr, int fd)
2601{
2602 TCPCharDriver *s = chr->opaque;
2603 if (s->fd != -1)
2604 return -1;
2605
f9e8cacc 2606 qemu_set_nonblock(fd);
13661089
DB		 2607 if (s->do_nodelay)
2608 socket_set_nodelay(fd);
2609 s->fd = fd;
2ea5a7af 2610 s->chan = io_channel_from_socket(fd);
910b6368
PB		 2611 if (s->listen_tag) {
2612 g_source_remove(s->listen_tag);
2613 s->listen_tag = 0;
2614 }
13661089
DB		 2615 tcp_chr_connect(chr);
2616
2617 return 0;
2618}
2619
2ea5a7af 2620static gboolean tcp_chr_accept(GIOChannel *channel, GIOCondition cond, void *opaque)
6f97dba0
AL		 2621{
2622 CharDriverState *chr = opaque;
2623 TCPCharDriver *s = chr->opaque;
2624 struct sockaddr_in saddr;
2625#ifndef _WIN32
2626 struct sockaddr_un uaddr;
2627#endif
2628 struct sockaddr *addr;
2629 socklen_t len;
2630 int fd;
2631
2632 for(;;) {
2633#ifndef _WIN32
2634 if (s->is_unix) {
2635 len = sizeof(uaddr);
2636 addr = (struct sockaddr *)&uaddr;
2637 } else
2638#endif
2639 {
2640 len = sizeof(saddr);
2641 addr = (struct sockaddr *)&saddr;
2642 }
40ff6d7e 2643 fd = qemu_accept(s->listen_fd, addr, &len);
6f97dba0 2644 if (fd < 0 && errno != EINTR) {
2ea5a7af 2645 return FALSE;
6f97dba0
AL		 2646 } else if (fd >= 0) {
2647 if (s->do_telnetopt)
2648 tcp_chr_telnet_init(fd);
2649 break;
2650 }
2651 }
13661089
DB		 2652 if (tcp_chr_add_client(chr, fd) < 0)
2653 close(fd);
2ea5a7af
AL		 2654
2655 return TRUE;
6f97dba0
AL		 2656}
2657
2658static void tcp_chr_close(CharDriverState *chr)
2659{
2660 TCPCharDriver *s = chr->opaque;
819f56b7 2661 if (s->fd >= 0) {
2ea5a7af 2662 if (s->tag) {
2b316774 2663 io_remove_watch_poll(s->tag);
910b6368 2664 s->tag = 0;
2ea5a7af
AL		 2665 }
2666 if (s->chan) {
2667 g_io_channel_unref(s->chan);
2668 }
6f97dba0 2669 closesocket(s->fd);
819f56b7
AL		 2670 }
2671 if (s->listen_fd >= 0) {
2ea5a7af
AL		 2672 if (s->listen_tag) {
2673 g_source_remove(s->listen_tag);
910b6368 2674 s->listen_tag = 0;
2ea5a7af
AL		 2675 }
2676 if (s->listen_chan) {
2677 g_io_channel_unref(s->listen_chan);
2678 }
6f97dba0 2679 closesocket(s->listen_fd);
819f56b7 2680 }
7267c094 2681 g_free(s);
a425d23f 2682 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 2683}
2684
f6bd5d6e
GH		 2685static CharDriverState *qemu_chr_open_socket_fd(int fd, bool do_nodelay,
2686 bool is_listen, bool is_telnet,
2687 bool is_waitconnect,
2688 Error **errp)
6f97dba0
AL		 2689{
2690 CharDriverState *chr = NULL;
2691 TCPCharDriver *s = NULL;
f6bd5d6e
GH		 2692 char host[NI_MAXHOST], serv[NI_MAXSERV];
2693 const char *left = "", *right = "";
2694 struct sockaddr_storage ss;
2695 socklen_t ss_len = sizeof(ss);
2696
2697 memset(&ss, 0, ss_len);
2698 if (getsockname(fd, (struct sockaddr *) &ss, &ss_len) != 0) {
2699 error_setg(errp, "getsockname: %s", strerror(errno));
2700 return NULL;
2701 }
2702
2703 chr = g_malloc0(sizeof(CharDriverState));
2704 s = g_malloc0(sizeof(TCPCharDriver));
2705
2706 s->connected = 0;
2707 s->fd = -1;
2708 s->listen_fd = -1;
2709 s->msgfd = -1;
2710
2711 chr->filename = g_malloc(256);
2712 switch (ss.ss_family) {
2713#ifndef _WIN32
2714 case AF_UNIX:
2715 s->is_unix = 1;
2716 snprintf(chr->filename, 256, "unix:%s%s",
2717 ((struct sockaddr_un *)(&ss))->sun_path,
2718 is_listen ? ",server" : "");
2719 break;
2720#endif
2721 case AF_INET6:
2722 left = "[";
2723 right = "]";
2724 /* fall through */
2725 case AF_INET:
2726 s->do_nodelay = do_nodelay;
2727 getnameinfo((struct sockaddr *) &ss, ss_len, host, sizeof(host),
2728 serv, sizeof(serv), NI_NUMERICHOST | NI_NUMERICSERV);
e5545854 2729 snprintf(chr->filename, 256, "%s:%s%s%s:%s%s",
f6bd5d6e
GH		 2730 is_telnet ? "telnet" : "tcp",
2731 left, host, right, serv,
2732 is_listen ? ",server" : "");
2733 break;
2734 }
2735
2736 chr->opaque = s;
2737 chr->chr_write = tcp_chr_write;
2738 chr->chr_close = tcp_chr_close;
2739 chr->get_msgfd = tcp_get_msgfd;
2740 chr->chr_add_client = tcp_chr_add_client;
d3cc5bc4 2741 chr->chr_add_watch = tcp_chr_add_watch;
f6bd5d6e
GH		 2742
2743 if (is_listen) {
2744 s->listen_fd = fd;
2ea5a7af
AL		 2745 s->listen_chan = io_channel_from_socket(s->listen_fd);
2746 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr);
f6bd5d6e
GH		 2747 if (is_telnet) {
2748 s->do_telnetopt = 1;
2749 }
2750 } else {
2751 s->connected = 1;
2752 s->fd = fd;
2753 socket_set_nodelay(fd);
2ea5a7af 2754 s->chan = io_channel_from_socket(s->fd);
f6bd5d6e
GH		 2755 tcp_chr_connect(chr);
2756 }
2757
2758 if (is_listen && is_waitconnect) {
2759 printf("QEMU waiting for connection on: %s\n",
2760 chr->filename);
2ea5a7af 2761 tcp_chr_accept(s->listen_chan, G_IO_IN, chr);
f9e8cacc 2762 qemu_set_nonblock(s->listen_fd);
f6bd5d6e
GH		 2763 }
2764 return chr;
2765}
2766
2767static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
2768{
2769 CharDriverState *chr = NULL;
87d5f24f 2770 Error *local_err = NULL;
aeb2c47a
GH		 2771 int fd = -1;
2772 int is_listen;
2773 int is_waitconnect;
2774 int do_nodelay;
2775 int is_unix;
2776 int is_telnet;
2777
2778 is_listen = qemu_opt_get_bool(opts, "server", 0);
2779 is_waitconnect = qemu_opt_get_bool(opts, "wait", 1);
2780 is_telnet = qemu_opt_get_bool(opts, "telnet", 0);
2781 do_nodelay = !qemu_opt_get_bool(opts, "delay", 1);
2782 is_unix = qemu_opt_get(opts, "path") != NULL;
6f97dba0
AL		 2783 if (!is_listen)
2784 is_waitconnect = 0;
2785
f07b6003
AL		 2786 if (is_unix) {
2787 if (is_listen) {
87d5f24f 2788 fd = unix_listen_opts(opts, &local_err);
f07b6003 2789 } else {
87d5f24f 2790 fd = unix_connect_opts(opts, &local_err, NULL, NULL);
f07b6003
AL		 2791 }
2792 } else {
2793 if (is_listen) {
87d5f24f 2794 fd = inet_listen_opts(opts, 0, &local_err);
f07b6003 2795 } else {
87d5f24f 2796 fd = inet_connect_opts(opts, &local_err, NULL, NULL);
f07b6003
AL		 2797 }
2798 }
a89dd6c3 2799 if (fd < 0) {
6f97dba0 2800 goto fail;
a89dd6c3 2801 }
6f97dba0
AL		 2802
2803 if (!is_waitconnect)
f9e8cacc 2804 qemu_set_nonblock(fd);
6f97dba0 2805
f6bd5d6e
GH		 2806 chr = qemu_chr_open_socket_fd(fd, do_nodelay, is_listen, is_telnet,
2807 is_waitconnect, &local_err);
2808 if (error_is_set(&local_err)) {
2809 goto fail;
6f97dba0 2810 }
1f51470d 2811 return chr;
aeb2c47a 2812
f6bd5d6e 2813
6f97dba0 2814 fail:
87d5f24f
PB		 2815 if (local_err) {
2816 qerror_report_err(local_err);
2817 error_free(local_err);
2818 }
2819 if (fd >= 0) {
6f97dba0 2820 closesocket(fd);
87d5f24f 2821 }
f6bd5d6e
GH		 2822 if (chr) {
2823 g_free(chr->opaque);
2824 g_free(chr);
2825 }
1f51470d 2826 return NULL;
6f97dba0
AL		 2827}
2828
51767e7c 2829/*********************************************************/
3949e594 2830/* Ring buffer chardev */
51767e7c
LL		 2831
2832typedef struct {
2833 size_t size;
2834 size_t prod;
2835 size_t cons;
2836 uint8_t *cbuf;
3949e594 2837} RingBufCharDriver;
51767e7c 2838
3949e594 2839static size_t ringbuf_count(const CharDriverState *chr)
51767e7c 2840{
3949e594 2841 const RingBufCharDriver *d = chr->opaque;
51767e7c 2842
5c230105 2843 return d->prod - d->cons;
51767e7c
LL		 2844}
2845
3949e594 2846static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
51767e7c 2847{
3949e594 2848 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 2849 int i;
2850
2851 if (!buf || (len < 0)) {
2852 return -1;
2853 }
2854
2855 for (i = 0; i < len; i++ ) {
5c230105
MA		 2856 d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
2857 if (d->prod - d->cons > d->size) {
51767e7c
LL		 2858 d->cons = d->prod - d->size;
2859 }
2860 }
2861
2862 return 0;
2863}
2864
3949e594 2865static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len)
51767e7c 2866{
3949e594 2867 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 2868 int i;
2869
5c230105
MA		 2870 for (i = 0; i < len && d->cons != d->prod; i++) {
2871 buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
51767e7c
LL		 2872 }
2873
2874 return i;
2875}
2876
3949e594 2877static void ringbuf_chr_close(struct CharDriverState *chr)
51767e7c 2878{
3949e594 2879 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 2880
2881 g_free(d->cbuf);
2882 g_free(d);
2883 chr->opaque = NULL;
2884}
2885
1da48c65
GH		 2886static CharDriverState *qemu_chr_open_ringbuf(ChardevRingbuf *opts,
2887 Error **errp)
51767e7c
LL		 2888{
2889 CharDriverState *chr;
3949e594 2890 RingBufCharDriver *d;
51767e7c
LL		 2891
2892 chr = g_malloc0(sizeof(CharDriverState));
2893 d = g_malloc(sizeof(*d));
2894
1da48c65 2895 d->size = opts->has_size ? opts->size : 65536;
51767e7c
LL		 2896
2897 /* The size must be power of 2 */
2898 if (d->size & (d->size - 1)) {
1da48c65 2899 error_setg(errp, "size of ringbuf chardev must be power of two");
51767e7c
LL		 2900 goto fail;
2901 }
2902
2903 d->prod = 0;
2904 d->cons = 0;
2905 d->cbuf = g_malloc0(d->size);
2906
2907 chr->opaque = d;
3949e594
MA		 2908 chr->chr_write = ringbuf_chr_write;
2909 chr->chr_close = ringbuf_chr_close;
51767e7c
LL		 2910
2911 return chr;
2912
2913fail:
2914 g_free(d);
2915 g_free(chr);
2916 return NULL;
2917}
2918
3949e594 2919static bool chr_is_ringbuf(const CharDriverState *chr)
1f590cf9 2920{
3949e594 2921 return chr->chr_write == ringbuf_chr_write;
1f590cf9
LL		 2922}
2923
3949e594 2924void qmp_ringbuf_write(const char *device, const char *data,
82e59a67 2925 bool has_format, enum DataFormat format,
1f590cf9
LL		 2926 Error **errp)
2927{
2928 CharDriverState *chr;
c4f331b6 2929 const uint8_t *write_data;
1f590cf9 2930 int ret;
c4f331b6 2931 size_t write_count;
1f590cf9
LL		 2932
2933 chr = qemu_chr_find(device);
2934 if (!chr) {
1a69278e 2935 error_setg(errp, "Device '%s' not found", device);
1f590cf9
LL		 2936 return;
2937 }
2938
3949e594
MA		 2939 if (!chr_is_ringbuf(chr)) {
2940 error_setg(errp,"%s is not a ringbuf device", device);
1f590cf9
LL		 2941 return;
2942 }
2943
1f590cf9
LL		 2944 if (has_format && (format == DATA_FORMAT_BASE64)) {
2945 write_data = g_base64_decode(data, &write_count);
2946 } else {
2947 write_data = (uint8_t *)data;
82e59a67 2948 write_count = strlen(data);
1f590cf9
LL		 2949 }
2950
3949e594 2951 ret = ringbuf_chr_write(chr, write_data, write_count);
1f590cf9 2952
13289fb5
MA		 2953 if (write_data != (uint8_t *)data) {
2954 g_free((void *)write_data);
2955 }
2956
1f590cf9
LL		 2957 if (ret < 0) {
2958 error_setg(errp, "Failed to write to device %s", device);
2959 return;
2960 }
2961}
2962
3949e594 2963char *qmp_ringbuf_read(const char *device, int64_t size,
3ab651fc
MA		 2964 bool has_format, enum DataFormat format,
2965 Error **errp)
49b6d722
LL		 2966{
2967 CharDriverState *chr;
c4f331b6 2968 uint8_t *read_data;
49b6d722 2969 size_t count;
3ab651fc 2970 char *data;
49b6d722
LL		 2971
2972 chr = qemu_chr_find(device);
2973 if (!chr) {
1a69278e 2974 error_setg(errp, "Device '%s' not found", device);
49b6d722
LL		 2975 return NULL;
2976 }
2977
3949e594
MA		 2978 if (!chr_is_ringbuf(chr)) {
2979 error_setg(errp,"%s is not a ringbuf device", device);
49b6d722
LL		 2980 return NULL;
2981 }
2982
2983 if (size <= 0) {
2984 error_setg(errp, "size must be greater than zero");
2985 return NULL;
2986 }
2987
3949e594 2988 count = ringbuf_count(chr);
49b6d722 2989 size = size > count ? count : size;
44f3bcd2 2990 read_data = g_malloc(size + 1);
49b6d722 2991
3949e594 2992 ringbuf_chr_read(chr, read_data, size);
49b6d722
LL		 2993
2994 if (has_format && (format == DATA_FORMAT_BASE64)) {
3ab651fc 2995 data = g_base64_encode(read_data, size);
13289fb5 2996 g_free(read_data);
49b6d722 2997 } else {
3949e594
MA		 2998 /*
2999 * FIXME should read only complete, valid UTF-8 characters up
3000 * to @size bytes. Invalid sequences should be replaced by a
3001 * suitable replacement character. Except when (and only
3002 * when) ring buffer lost characters since last read, initial
3003 * continuation characters should be dropped.
3004 */
44f3bcd2 3005 read_data[size] = 0;
3ab651fc 3006 data = (char *)read_data;
49b6d722
LL		 3007 }
3008
3ab651fc 3009 return data;
49b6d722
LL		 3010}
3011
33521634 3012QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
191bc01b 3013{
6ea314d9 3014 char host[65], port[33], width[8], height[8];
aeb2c47a 3015 int pos;
7d31544f 3016 const char *p;
191bc01b 3017 QemuOpts *opts;
8be7e7e4 3018 Error *local_err = NULL;
191bc01b 3019
8be7e7e4
LC		 3020 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
3021 if (error_is_set(&local_err)) {
3022 qerror_report_err(local_err);
3023 error_free(local_err);
191bc01b 3024 return NULL;
8be7e7e4 3025 }
191bc01b 3026
7591c5c1
GH		 3027 if (strstart(filename, "mon:", &p)) {
3028 filename = p;
3029 qemu_opt_set(opts, "mux", "on");
3030 }
3031
f0457e8d
GH		 3032 if (strcmp(filename, "null") == 0 ||
3033 strcmp(filename, "pty") == 0 ||
3034 strcmp(filename, "msmouse") == 0 ||
dc1c21e6 3035 strcmp(filename, "braille") == 0 ||
f0457e8d 3036 strcmp(filename, "stdio") == 0) {
4490dadf 3037 qemu_opt_set(opts, "backend", filename);
191bc01b
GH		 3038 return opts;
3039 }
6ea314d9
GH		 3040 if (strstart(filename, "vc", &p)) {
3041 qemu_opt_set(opts, "backend", "vc");
3042 if (*p == ':') {
3043 if (sscanf(p+1, "%8[0-9]x%8[0-9]", width, height) == 2) {
3044 /* pixels */
3045 qemu_opt_set(opts, "width", width);
3046 qemu_opt_set(opts, "height", height);
3047 } else if (sscanf(p+1, "%8[0-9]Cx%8[0-9]C", width, height) == 2) {
3048 /* chars */
3049 qemu_opt_set(opts, "cols", width);
3050 qemu_opt_set(opts, "rows", height);
3051 } else {
3052 goto fail;
3053 }
3054 }
3055 return opts;
3056 }
d6c983cd
GH		 3057 if (strcmp(filename, "con:") == 0) {
3058 qemu_opt_set(opts, "backend", "console");
3059 return opts;
3060 }
48b76496
GH		 3061 if (strstart(filename, "COM", NULL)) {
3062 qemu_opt_set(opts, "backend", "serial");
3063 qemu_opt_set(opts, "path", filename);
3064 return opts;
3065 }
7d31544f
GH		 3066 if (strstart(filename, "file:", &p)) {
3067 qemu_opt_set(opts, "backend", "file");
3068 qemu_opt_set(opts, "path", p);
3069 return opts;
3070 }
3071 if (strstart(filename, "pipe:", &p)) {
3072 qemu_opt_set(opts, "backend", "pipe");
3073 qemu_opt_set(opts, "path", p);
3074 return opts;
3075 }
aeb2c47a
GH		 3076 if (strstart(filename, "tcp:", &p) ||
3077 strstart(filename, "telnet:", &p)) {
3078 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3079 host[0] = 0;
3080 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
3081 goto fail;
3082 }
3083 qemu_opt_set(opts, "backend", "socket");
3084 qemu_opt_set(opts, "host", host);
3085 qemu_opt_set(opts, "port", port);
3086 if (p[pos] == ',') {
3087 if (qemu_opts_do_parse(opts, p+pos+1, NULL) != 0)
3088 goto fail;
3089 }
3090 if (strstart(filename, "telnet:", &p))
3091 qemu_opt_set(opts, "telnet", "on");
3092 return opts;
3093 }
7e1b35b4
GH		 3094 if (strstart(filename, "udp:", &p)) {
3095 qemu_opt_set(opts, "backend", "udp");
3096 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
3097 host[0] = 0;
39324ca4 3098 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
7e1b35b4
GH		 3099 goto fail;
3100 }
3101 }
3102 qemu_opt_set(opts, "host", host);
3103 qemu_opt_set(opts, "port", port);
3104 if (p[pos] == '@') {
3105 p += pos + 1;
3106 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3107 host[0] = 0;
3108 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
7e1b35b4
GH		 3109 goto fail;
3110 }
3111 }
3112 qemu_opt_set(opts, "localaddr", host);
3113 qemu_opt_set(opts, "localport", port);
3114 }
3115 return opts;
3116 }
aeb2c47a
GH		 3117 if (strstart(filename, "unix:", &p)) {
3118 qemu_opt_set(opts, "backend", "socket");
3119 if (qemu_opts_do_parse(opts, p, "path") != 0)
3120 goto fail;
3121 return opts;
3122 }
48b76496
GH		 3123 if (strstart(filename, "/dev/parport", NULL) ||
3124 strstart(filename, "/dev/ppi", NULL)) {
3125 qemu_opt_set(opts, "backend", "parport");
3126 qemu_opt_set(opts, "path", filename);
3127 return opts;
3128 }
3129 if (strstart(filename, "/dev/", NULL)) {
3130 qemu_opt_set(opts, "backend", "tty");
3131 qemu_opt_set(opts, "path", filename);
3132 return opts;
3133 }
191bc01b 3134
aeb2c47a 3135fail:
191bc01b
GH		 3136 qemu_opts_del(opts);
3137 return NULL;
3138}
3139
846e2e49
GH		 3140static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
3141 Error **errp)
3142{
3143 const char *path = qemu_opt_get(opts, "path");
3144
3145 if (path == NULL) {
3146 error_setg(errp, "chardev: file: no filename given");
3147 return;
3148 }
3149 backend->file = g_new0(ChardevFile, 1);
3150 backend->file->out = g_strdup(path);
3151}
3152
7c358031
GH		 3153static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
3154 Error **errp)
3155{
3156 backend->stdio = g_new0(ChardevStdio, 1);
3157 backend->stdio->has_signal = true;
3158 backend->stdio->signal =
3159 qemu_opt_get_bool(opts, "signal", display_type != DT_NOGRAPHIC);
3160}
3161
0f1cb51d
GH		 3162static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
3163 Error **errp)
3164{
3165 const char *device = qemu_opt_get(opts, "path");
3166
3167 if (device == NULL) {
3168 error_setg(errp, "chardev: serial/tty: no device path given");
3169 return;
3170 }
3171 backend->serial = g_new0(ChardevHostdev, 1);
3172 backend->serial->device = g_strdup(device);
3173}
3174
dc375097
GH		 3175static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
3176 Error **errp)
3177{
3178 const char *device = qemu_opt_get(opts, "path");
3179
3180 if (device == NULL) {
3181 error_setg(errp, "chardev: parallel: no device path given");
3182 return;
3183 }
3184 backend->parallel = g_new0(ChardevHostdev, 1);
3185 backend->parallel->device = g_strdup(device);
3186}
3187
548cbb36
GH		 3188static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
3189 Error **errp)
3190{
3191 const char *device = qemu_opt_get(opts, "path");
3192
3193 if (device == NULL) {
3194 error_setg(errp, "chardev: pipe: no device path given");
3195 return;
3196 }
3197 backend->pipe = g_new0(ChardevHostdev, 1);
3198 backend->pipe->device = g_strdup(device);
3199}
3200
1da48c65
GH		 3201static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
3202 Error **errp)
3203{
3204 int val;
3205
3206 backend->memory = g_new0(ChardevRingbuf, 1);
3207
3208 val = qemu_opt_get_number(opts, "size", 0);
3209 if (val != 0) {
3210 backend->memory->has_size = true;
3211 backend->memory->size = val;
3212 }
3213}
3214
d654f34e 3215typedef struct CharDriver {
191bc01b 3216 const char *name;
2c5f4882 3217 /* old, pre qapi */
1f51470d 3218 CharDriverState *(*open)(QemuOpts *opts);
2c5f4882
GH		 3219 /* new, qapi-based */
3220 int kind;
3221 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
d654f34e
AL		 3222} CharDriver;
3223
3224static GSList *backends;
3225
3226void register_char_driver(const char *name, CharDriverState *(*open)(QemuOpts *))
3227{
3228 CharDriver *s;
3229
3230 s = g_malloc0(sizeof(*s));
3231 s->name = g_strdup(name);
3232 s->open = open;
3233
3234 backends = g_slist_append(backends, s);
3235}
191bc01b 3236
2c5f4882
GH		 3237void register_char_driver_qapi(const char *name, int kind,
3238 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp))
3239{
3240 CharDriver *s;
3241
3242 s = g_malloc0(sizeof(*s));
3243 s->name = g_strdup(name);
3244 s->kind = kind;
3245 s->parse = parse;
3246
3247 backends = g_slist_append(backends, s);
3248}
3249
f69554b9 3250CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
bd2d80b2
GH		 3251 void (*init)(struct CharDriverState *s),
3252 Error **errp)
191bc01b 3253{
d654f34e 3254 CharDriver *cd;
191bc01b 3255 CharDriverState *chr;
d654f34e 3256 GSList *i;
191bc01b
GH		 3257
3258 if (qemu_opts_id(opts) == NULL) {
312fd5f2 3259 error_setg(errp, "chardev: no id specified");
2274ae9d 3260 goto err;
191bc01b
GH		 3261 }
3262
1bbd185f 3263 if (qemu_opt_get(opts, "backend") == NULL) {
312fd5f2 3264 error_setg(errp, "chardev: \"%s\" missing backend",
bd2d80b2 3265 qemu_opts_id(opts));
2274ae9d 3266 goto err;
1bbd185f 3267 }
d654f34e
AL		 3268 for (i = backends; i; i = i->next) {
3269 cd = i->data;
3270
3271 if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) {
191bc01b 3272 break;
d654f34e 3273 }
191bc01b 3274 }
d654f34e 3275 if (i == NULL) {
312fd5f2 3276 error_setg(errp, "chardev: backend \"%s\" not found",
bd2d80b2 3277 qemu_opt_get(opts, "backend"));
d654f34e 3278 return NULL;
191bc01b
GH		 3279 }
3280
2c5f4882
GH		 3281 if (!cd->open) {
3282 /* using new, qapi init */
3283 ChardevBackend *backend = g_new0(ChardevBackend, 1);
3284 ChardevReturn *ret = NULL;
3285 const char *id = qemu_opts_id(opts);
edb2fb3c
GH		 3286 const char *bid = NULL;
3287
3288 if (qemu_opt_get_bool(opts, "mux", 0)) {
3289 bid = g_strdup_printf("%s-base", id);
3290 }
2c5f4882
GH		 3291
3292 chr = NULL;
3293 backend->kind = cd->kind;
3294 if (cd->parse) {
3295 cd->parse(opts, backend, errp);
3296 if (error_is_set(errp)) {
3297 goto qapi_out;
3298 }
3299 }
edb2fb3c 3300 ret = qmp_chardev_add(bid ? bid : id, backend, errp);
2c5f4882
GH		 3301 if (error_is_set(errp)) {
3302 goto qapi_out;
3303 }
edb2fb3c
GH		 3304
3305 if (bid) {
3306 qapi_free_ChardevBackend(backend);
3307 qapi_free_ChardevReturn(ret);
3308 backend = g_new0(ChardevBackend, 1);
3309 backend->mux = g_new0(ChardevMux, 1);
3310 backend->kind = CHARDEV_BACKEND_KIND_MUX;
3311 backend->mux->chardev = g_strdup(bid);
3312 ret = qmp_chardev_add(id, backend, errp);
3313 if (error_is_set(errp)) {
3314 goto qapi_out;
3315 }
3316 }
3317
2c5f4882
GH		 3318 chr = qemu_chr_find(id);
3319
3320 qapi_out:
3321 qapi_free_ChardevBackend(backend);
3322 qapi_free_ChardevReturn(ret);
3323 return chr;
3324 }
3325
d654f34e 3326 chr = cd->open(opts);
1f51470d 3327 if (!chr) {
312fd5f2 3328 error_setg(errp, "chardev: opening backend \"%s\" failed",
bd2d80b2 3329 qemu_opt_get(opts, "backend"));
2274ae9d 3330 goto err;
191bc01b
GH		 3331 }
3332
3333 if (!chr->filename)
7267c094 3334 chr->filename = g_strdup(qemu_opt_get(opts, "backend"));
191bc01b 3335 chr->init = init;
72cf2d4f 3336 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
7591c5c1
GH		 3337
3338 if (qemu_opt_get_bool(opts, "mux", 0)) {
3339 CharDriverState *base = chr;
3340 int len = strlen(qemu_opts_id(opts)) + 6;
7267c094 3341 base->label = g_malloc(len);
7591c5c1
GH		 3342 snprintf(base->label, len, "%s-base", qemu_opts_id(opts));
3343 chr = qemu_chr_open_mux(base);
3344 chr->filename = base->filename;
d5b27167 3345 chr->avail_connections = MAX_MUX;
72cf2d4f 3346 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
d5b27167
KK		 3347 } else {
3348 chr->avail_connections = 1;
7591c5c1 3349 }
7267c094 3350 chr->label = g_strdup(qemu_opts_id(opts));
2274ae9d 3351 chr->opts = opts;
191bc01b 3352 return chr;
2274ae9d
GH		 3353
3354err:
3355 qemu_opts_del(opts);
3356 return NULL;
191bc01b
GH		 3357}
3358
27143a44 3359CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
6f97dba0
AL		 3360{
3361 const char *p;
3362 CharDriverState *chr;
191bc01b 3363 QemuOpts *opts;
bd2d80b2 3364 Error *err = NULL;
191bc01b 3365
c845f401
GH		 3366 if (strstart(filename, "chardev:", &p)) {
3367 return qemu_chr_find(p);
3368 }
3369
191bc01b 3370 opts = qemu_chr_parse_compat(label, filename);
7e1b35b4
GH		 3371 if (!opts)
3372 return NULL;
6f97dba0 3373
bd2d80b2
GH		 3374 chr = qemu_chr_new_from_opts(opts, init, &err);
3375 if (error_is_set(&err)) {
3376 fprintf(stderr, "%s\n", error_get_pretty(err));
3377 error_free(err);
3378 }
7e1b35b4 3379 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
456d6069 3380 qemu_chr_fe_claim_no_fail(chr);
7e1b35b4 3381 monitor_init(chr, MONITOR_USE_READLINE);
6f97dba0
AL		 3382 }
3383 return chr;
3384}
3385
15f31519 3386void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo)
c48855e1
PB		 3387{
3388 if (chr->chr_set_echo) {
3389 chr->chr_set_echo(chr, echo);
3390 }
3391}
3392
8e25daa8 3393void qemu_chr_fe_set_open(struct CharDriverState *chr, int fe_open)
7c32c4fe 3394{
8e25daa8 3395 if (chr->fe_open == fe_open) {
c0c4bd2c
HG		 3396 return;
3397 }
8e25daa8 3398 chr->fe_open = fe_open;
574b711a
HG		 3399 if (chr->chr_set_fe_open) {
3400 chr->chr_set_fe_open(chr, fe_open);
7c32c4fe
HG		 3401 }
3402}
3403
2c8a5942
KW		 3404int qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond,
3405 GIOFunc func, void *user_data)
23673ca7
AL		 3406{
3407 GSource *src;
3408 guint tag;
3409
3410 if (s->chr_add_watch == NULL) {
3411 return -ENOSYS;
3412 }
3413
3414 src = s->chr_add_watch(s, cond);
3415 g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
3416 tag = g_source_attach(src, NULL);
3417 g_source_unref(src);
3418
3419 return tag;
3420}
3421
44c473de
HG		 3422int qemu_chr_fe_claim(CharDriverState *s)
3423{
3424 if (s->avail_connections < 1) {
3425 return -1;
3426 }
3427 s->avail_connections--;
3428 return 0;
3429}
3430
3431void qemu_chr_fe_claim_no_fail(CharDriverState *s)
3432{
3433 if (qemu_chr_fe_claim(s) != 0) {
3434 fprintf(stderr, "%s: error chardev \"%s\" already used\n",
3435 __func__, s->label);
3436 exit(1);
3437 }
3438}
3439
3440void qemu_chr_fe_release(CharDriverState *s)
3441{
3442 s->avail_connections++;
3443}
3444
70f24fb6 3445void qemu_chr_delete(CharDriverState *chr)
6f97dba0 3446{
72cf2d4f 3447 QTAILQ_REMOVE(&chardevs, chr, next);
2274ae9d 3448 if (chr->chr_close) {
6f97dba0 3449 chr->chr_close(chr);
2274ae9d 3450 }
7267c094
AL		 3451 g_free(chr->filename);
3452 g_free(chr->label);
2274ae9d
GH		 3453 if (chr->opts) {
3454 qemu_opts_del(chr->opts);
3455 }
7267c094 3456 g_free(chr);
6f97dba0
AL		 3457}
3458
c5a415a0 3459ChardevInfoList *qmp_query_chardev(Error **errp)
6f97dba0 3460{
c5a415a0 3461 ChardevInfoList *chr_list = NULL;
6f97dba0
AL		 3462 CharDriverState *chr;
3463
72cf2d4f 3464 QTAILQ_FOREACH(chr, &chardevs, next) {
c5a415a0
LC		 3465 ChardevInfoList *info = g_malloc0(sizeof(*info));
3466 info->value = g_malloc0(sizeof(*info->value));
3467 info->value->label = g_strdup(chr->label);
3468 info->value->filename = g_strdup(chr->filename);
3469
3470 info->next = chr_list;
3471 chr_list = info;
6f97dba0 3472 }
588b3832 3473
c5a415a0 3474 return chr_list;
6f97dba0 3475}
c845f401
GH		 3476
3477CharDriverState *qemu_chr_find(const char *name)
3478{
3479 CharDriverState *chr;
3480
72cf2d4f 3481 QTAILQ_FOREACH(chr, &chardevs, next) {
c845f401
GH		 3482 if (strcmp(chr->label, name) != 0)
3483 continue;
3484 return chr;
3485 }
3486 return NULL;
3487}
0beb4942
AL		 3488
3489/* Get a character (serial) device interface. */
3490CharDriverState *qemu_char_get_next_serial(void)
3491{
3492 static int next_serial;
456d6069 3493 CharDriverState *chr;
0beb4942
AL		 3494
3495 /* FIXME: This function needs to go away: use chardev properties! */
456d6069
HG		 3496
3497 while (next_serial < MAX_SERIAL_PORTS && serial_hds[next_serial]) {
3498 chr = serial_hds[next_serial++];
3499 qemu_chr_fe_claim_no_fail(chr);
3500 return chr;
3501 }
3502 return NULL;
0beb4942
AL		 3503}
3504
4d454574
PB		 3505QemuOptsList qemu_chardev_opts = {
3506 .name = "chardev",
3507 .implied_opt_name = "backend",
3508 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
3509 .desc = {
3510 {
3511 .name = "backend",
3512 .type = QEMU_OPT_STRING,
3513 },{
3514 .name = "path",
3515 .type = QEMU_OPT_STRING,
3516 },{
3517 .name = "host",
3518 .type = QEMU_OPT_STRING,
3519 },{
3520 .name = "port",
3521 .type = QEMU_OPT_STRING,
3522 },{
3523 .name = "localaddr",
3524 .type = QEMU_OPT_STRING,
3525 },{
3526 .name = "localport",
3527 .type = QEMU_OPT_STRING,
3528 },{
3529 .name = "to",
3530 .type = QEMU_OPT_NUMBER,
3531 },{
3532 .name = "ipv4",
3533 .type = QEMU_OPT_BOOL,
3534 },{
3535 .name = "ipv6",
3536 .type = QEMU_OPT_BOOL,
3537 },{
3538 .name = "wait",
3539 .type = QEMU_OPT_BOOL,
3540 },{
3541 .name = "server",
3542 .type = QEMU_OPT_BOOL,
3543 },{
3544 .name = "delay",
3545 .type = QEMU_OPT_BOOL,
3546 },{
3547 .name = "telnet",
3548 .type = QEMU_OPT_BOOL,
3549 },{
3550 .name = "width",
3551 .type = QEMU_OPT_NUMBER,
3552 },{
3553 .name = "height",
3554 .type = QEMU_OPT_NUMBER,
3555 },{
3556 .name = "cols",
3557 .type = QEMU_OPT_NUMBER,
3558 },{
3559 .name = "rows",
3560 .type = QEMU_OPT_NUMBER,
3561 },{
3562 .name = "mux",
3563 .type = QEMU_OPT_BOOL,
3564 },{
3565 .name = "signal",
3566 .type = QEMU_OPT_BOOL,
3567 },{
3568 .name = "name",
3569 .type = QEMU_OPT_STRING,
3570 },{
3571 .name = "debug",
3572 .type = QEMU_OPT_NUMBER,
51767e7c 3573 },{
3949e594 3574 .name = "size",
de1cc36e 3575 .type = QEMU_OPT_SIZE,
4d454574
PB		 3576 },
3577 { /* end of list */ }
3578 },
3579};
f1a1a356 3580
ffbdbe59
GH		 3581#ifdef _WIN32
3582
3583static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
3584{
3585 HANDLE out;
3586
3587 if (file->in) {
3588 error_setg(errp, "input file not supported");
3589 return NULL;
3590 }
3591
3592 out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
3593 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
3594 if (out == INVALID_HANDLE_VALUE) {
3595 error_setg(errp, "open %s failed", file->out);
3596 return NULL;
3597 }
3598 return qemu_chr_open_win_file(out);
3599}
3600
d36b2b90
MA		 3601static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
3602 Error **errp)
d59044ef 3603{
d36b2b90
MA		 3604 return qemu_chr_open_win_path(serial->device);
3605}
3606
3607static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
3608 Error **errp)
3609{
3610 error_setg(errp, "character device backend type 'parallel' not supported");
3611 return NULL;
d59044ef
GH		 3612}
3613
ffbdbe59
GH		 3614#else /* WIN32 */
3615
3616static int qmp_chardev_open_file_source(char *src, int flags,
3617 Error **errp)
3618{
3619 int fd = -1;
3620
3621 TFR(fd = qemu_open(src, flags, 0666));
3622 if (fd == -1) {
3623 error_setg(errp, "open %s: %s", src, strerror(errno));
3624 }
3625 return fd;
3626}
3627
3628static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
3629{
3630 int flags, in = -1, out = -1;
3631
3632 flags = O_WRONLY | O_TRUNC | O_CREAT | O_BINARY;
3633 out = qmp_chardev_open_file_source(file->out, flags, errp);
3634 if (error_is_set(errp)) {
3635 return NULL;
3636 }
3637
3638 if (file->in) {
3639 flags = O_RDONLY;
3640 in = qmp_chardev_open_file_source(file->in, flags, errp);
3641 if (error_is_set(errp)) {
3642 qemu_close(out);
3643 return NULL;
3644 }
3645 }
3646
3647 return qemu_chr_open_fd(in, out);
3648}
3649
d36b2b90
MA		 3650static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
3651 Error **errp)
d59044ef 3652{
d59044ef 3653#ifdef HAVE_CHARDEV_TTY
d36b2b90
MA		 3654 int fd;
3655
3656 fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
3657 if (error_is_set(errp)) {
3658 return NULL;
39099991 3659 }
f9e8cacc 3660 qemu_set_nonblock(fd);
d36b2b90
MA		 3661 return qemu_chr_open_tty_fd(fd);
3662#else
3663 error_setg(errp, "character device backend type 'serial' not supported");
3664 return NULL;
88a946d3 3665#endif
d36b2b90
MA		 3666}
3667
3668static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
3669 Error **errp)
3670{
88a946d3 3671#ifdef HAVE_CHARDEV_PARPORT
d36b2b90
MA		 3672 int fd;
3673
3674 fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
3675 if (error_is_set(errp)) {
d59044ef
GH		 3676 return NULL;
3677 }
d36b2b90
MA		 3678 return qemu_chr_open_pp_fd(fd);
3679#else
3680 error_setg(errp, "character device backend type 'parallel' not supported");
3681 return NULL;
3682#endif
d59044ef
GH		 3683}
3684
ffbdbe59
GH		 3685#endif /* WIN32 */
3686
f6bd5d6e
GH		 3687static CharDriverState *qmp_chardev_open_socket(ChardevSocket *sock,
3688 Error **errp)
3689{
3690 SocketAddress *addr = sock->addr;
3691 bool do_nodelay = sock->has_nodelay ? sock->nodelay : false;
3692 bool is_listen = sock->has_server ? sock->server : true;
3693 bool is_telnet = sock->has_telnet ? sock->telnet : false;
3694 bool is_waitconnect = sock->has_wait ? sock->wait : false;
3695 int fd;
3696
3697 if (is_listen) {
3698 fd = socket_listen(addr, errp);
3699 } else {
3700 fd = socket_connect(addr, errp, NULL, NULL);
3701 }
3702 if (error_is_set(errp)) {
3703 return NULL;
3704 }
3705 return qemu_chr_open_socket_fd(fd, do_nodelay, is_listen,
3706 is_telnet, is_waitconnect, errp);
3707}
3708
3ecc059d
GH		 3709static CharDriverState *qmp_chardev_open_dgram(ChardevDgram *dgram,
3710 Error **errp)
3711{
3712 int fd;
3713
3714 fd = socket_dgram(dgram->remote, dgram->local, errp);
3715 if (error_is_set(errp)) {
3716 return NULL;
3717 }
3718 return qemu_chr_open_udp_fd(fd);
3719}
3720
f1a1a356
GH		 3721ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
3722 Error **errp)
3723{
3724 ChardevReturn *ret = g_new0(ChardevReturn, 1);
edb2fb3c 3725 CharDriverState *base, *chr = NULL;
f1a1a356
GH		 3726
3727 chr = qemu_chr_find(id);
3728 if (chr) {
3729 error_setg(errp, "Chardev '%s' already exists", id);
3730 g_free(ret);
3731 return NULL;
3732 }
3733
3734 switch (backend->kind) {
ffbdbe59
GH		 3735 case CHARDEV_BACKEND_KIND_FILE:
3736 chr = qmp_chardev_open_file(backend->file, errp);
3737 break;
d36b2b90
MA		 3738 case CHARDEV_BACKEND_KIND_SERIAL:
3739 chr = qmp_chardev_open_serial(backend->serial, errp);
3740 break;
3741 case CHARDEV_BACKEND_KIND_PARALLEL:
3742 chr = qmp_chardev_open_parallel(backend->parallel, errp);
d59044ef 3743 break;
548cbb36
GH		 3744 case CHARDEV_BACKEND_KIND_PIPE:
3745 chr = qemu_chr_open_pipe(backend->pipe);
3746 break;
f6bd5d6e
GH		 3747 case CHARDEV_BACKEND_KIND_SOCKET:
3748 chr = qmp_chardev_open_socket(backend->socket, errp);
3749 break;
3ecc059d
GH		 3750 case CHARDEV_BACKEND_KIND_DGRAM:
3751 chr = qmp_chardev_open_dgram(backend->dgram, errp);
3752 break;
0a1a7fab
GH		 3753#ifdef HAVE_CHARDEV_TTY
3754 case CHARDEV_BACKEND_KIND_PTY:
e68c5958 3755 chr = qemu_chr_open_pty(id, ret);
0a1a7fab 3756 break;
0a1a7fab 3757#endif
f1a1a356 3758 case CHARDEV_BACKEND_KIND_NULL:
80dca9e6 3759 chr = qemu_chr_open_null();
f1a1a356 3760 break;
edb2fb3c
GH		 3761 case CHARDEV_BACKEND_KIND_MUX:
3762 base = qemu_chr_find(backend->mux->chardev);
3763 if (base == NULL) {
3764 error_setg(errp, "mux: base chardev %s not found",
3765 backend->mux->chardev);
3766 break;
3767 }
3768 chr = qemu_chr_open_mux(base);
3769 break;
f5a51cab
GH		 3770 case CHARDEV_BACKEND_KIND_MSMOUSE:
3771 chr = qemu_chr_open_msmouse();
3772 break;
2d57286d
GH		 3773#ifdef CONFIG_BRLAPI
3774 case CHARDEV_BACKEND_KIND_BRAILLE:
3775 chr = chr_baum_init();
3776 break;
3777#endif
7c358031
GH		 3778 case CHARDEV_BACKEND_KIND_STDIO:
3779 chr = qemu_chr_open_stdio(backend->stdio);
3780 break;
d9ac374f
GH		 3781#ifdef _WIN32
3782 case CHARDEV_BACKEND_KIND_CONSOLE:
3783 chr = qemu_chr_open_win_con();
3784 break;
cd153e2a
GH		 3785#endif
3786#ifdef CONFIG_SPICE
3787 case CHARDEV_BACKEND_KIND_SPICEVMC:
3788 chr = qemu_chr_open_spice_vmc(backend->spicevmc->type);
3789 break;
3790 case CHARDEV_BACKEND_KIND_SPICEPORT:
3791 chr = qemu_chr_open_spice_port(backend->spiceport->fqdn);
3792 break;
d9ac374f 3793#endif
702ec69c
GH		 3794 case CHARDEV_BACKEND_KIND_VC:
3795 chr = vc_init(backend->vc);
3796 break;
1da48c65
GH		 3797 case CHARDEV_BACKEND_KIND_MEMORY:
3798 chr = qemu_chr_open_ringbuf(backend->memory, errp);
3799 break;
f1a1a356
GH		 3800 default:
3801 error_setg(errp, "unknown chardev backend (%d)", backend->kind);
3802 break;
3803 }
3804
3805 if (chr == NULL && !error_is_set(errp)) {
3806 error_setg(errp, "Failed to create chardev");
3807 }
3808 if (chr) {
3809 chr->label = g_strdup(id);
edb2fb3c
GH		 3810 chr->avail_connections =
3811 (backend->kind == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1;
f1a1a356
GH		 3812 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3813 return ret;
3814 } else {
3815 g_free(ret);
3816 return NULL;
3817 }
3818}
3819
3820void qmp_chardev_remove(const char *id, Error **errp)
3821{
3822 CharDriverState *chr;
3823
3824 chr = qemu_chr_find(id);
3825 if (NULL == chr) {
3826 error_setg(errp, "Chardev '%s' not found", id);
3827 return;
3828 }
3829 if (chr->chr_can_read || chr->chr_read ||
3830 chr->chr_event || chr->handler_opaque) {
3831 error_setg(errp, "Chardev '%s' is busy", id);
3832 return;
3833 }
3834 qemu_chr_delete(chr);
3835}
d654f34e
AL		 3836
3837static void register_types(void)
3838{
80dca9e6 3839 register_char_driver_qapi("null", CHARDEV_BACKEND_KIND_NULL, NULL);
d654f34e
AL		 3840 register_char_driver("socket", qemu_chr_open_socket);
3841 register_char_driver("udp", qemu_chr_open_udp);
1da48c65
GH		 3842 register_char_driver_qapi("memory", CHARDEV_BACKEND_KIND_MEMORY,
3843 qemu_chr_parse_ringbuf);
846e2e49
GH		 3844 register_char_driver_qapi("file", CHARDEV_BACKEND_KIND_FILE,
3845 qemu_chr_parse_file_out);
7c358031
GH		 3846 register_char_driver_qapi("stdio", CHARDEV_BACKEND_KIND_STDIO,
3847 qemu_chr_parse_stdio);
0f1cb51d
GH		 3848 register_char_driver_qapi("serial", CHARDEV_BACKEND_KIND_SERIAL,
3849 qemu_chr_parse_serial);
3850 register_char_driver_qapi("tty", CHARDEV_BACKEND_KIND_SERIAL,
3851 qemu_chr_parse_serial);
dc375097
GH		 3852 register_char_driver_qapi("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
3853 qemu_chr_parse_parallel);
3854 register_char_driver_qapi("parport", CHARDEV_BACKEND_KIND_PARALLEL,
3855 qemu_chr_parse_parallel);
e68c5958 3856 register_char_driver_qapi("pty", CHARDEV_BACKEND_KIND_PTY, NULL);
d9ac374f 3857 register_char_driver_qapi("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL);
548cbb36
GH		 3858 register_char_driver_qapi("pipe", CHARDEV_BACKEND_KIND_PIPE,
3859 qemu_chr_parse_pipe);
d654f34e
AL		 3860}
3861
3862type_init(register_types);
Qemu copy for testing