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Merge remote-tracking branch 'stefanha/trivial-patches' into staging
[mirror_qemu.git] / qemu-char.c
CommitLineData
6f97dba0
AL		 1/*
2 * QEMU System Emulator
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24#include "qemu-common.h"
83c9089e 25#include "monitor/monitor.h"
28ecbaee 26#include "ui/console.h"
9c17d615 27#include "sysemu/sysemu.h"
1de7afc9 28#include "qemu/timer.h"
927d4878 29#include "char/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{
597 GSource *src;
598 int max_size;
599
600 IOCanReadHandler *fd_can_read;
601 void *opaque;
602
603 QTAILQ_ENTRY(IOWatchPoll) node;
604} IOWatchPoll;
605
606static QTAILQ_HEAD(, IOWatchPoll) io_watch_poll_list =
607 QTAILQ_HEAD_INITIALIZER(io_watch_poll_list);
608
609static IOWatchPoll *io_watch_poll_from_source(GSource *source)
610{
611 IOWatchPoll *i;
612
613 QTAILQ_FOREACH(i, &io_watch_poll_list, node) {
614 if (i->src == source) {
615 return i;
616 }
617 }
618
619 return NULL;
620}
621
622static gboolean io_watch_poll_prepare(GSource *source, gint *timeout_)
623{
624 IOWatchPoll *iwp = io_watch_poll_from_source(source);
625
626 iwp->max_size = iwp->fd_can_read(iwp->opaque);
627 if (iwp->max_size == 0) {
628 return FALSE;
629 }
630
631 return g_io_watch_funcs.prepare(source, timeout_);
632}
633
634static gboolean io_watch_poll_check(GSource *source)
635{
636 IOWatchPoll *iwp = io_watch_poll_from_source(source);
637
638 if (iwp->max_size == 0) {
639 return FALSE;
640 }
641
642 return g_io_watch_funcs.check(source);
643}
644
645static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
646 gpointer user_data)
647{
648 return g_io_watch_funcs.dispatch(source, callback, user_data);
649}
650
651static void io_watch_poll_finalize(GSource *source)
652{
653 IOWatchPoll *iwp = io_watch_poll_from_source(source);
654 QTAILQ_REMOVE(&io_watch_poll_list, iwp, node);
655 g_io_watch_funcs.finalize(source);
656}
657
658static GSourceFuncs io_watch_poll_funcs = {
659 .prepare = io_watch_poll_prepare,
660 .check = io_watch_poll_check,
661 .dispatch = io_watch_poll_dispatch,
662 .finalize = io_watch_poll_finalize,
663};
664
665/* Can only be used for read */
666static guint io_add_watch_poll(GIOChannel *channel,
667 IOCanReadHandler *fd_can_read,
668 GIOFunc fd_read,
669 gpointer user_data)
670{
671 IOWatchPoll *iwp;
672 GSource *src;
673 guint tag;
674
675 src = g_io_create_watch(channel, G_IO_IN | G_IO_ERR | G_IO_HUP);
676 g_source_set_funcs(src, &io_watch_poll_funcs);
677 g_source_set_callback(src, (GSourceFunc)fd_read, user_data, NULL);
678 tag = g_source_attach(src, NULL);
679 g_source_unref(src);
680
681 iwp = g_malloc0(sizeof(*iwp));
682 iwp->src = src;
683 iwp->max_size = 0;
684 iwp->fd_can_read = fd_can_read;
685 iwp->opaque = user_data;
686
687 QTAILQ_INSERT_HEAD(&io_watch_poll_list, iwp, node);
688
689 return tag;
690}
691
44ab9ed4 692#ifndef _WIN32
96c63847
AL		 693static GIOChannel *io_channel_from_fd(int fd)
694{
695 GIOChannel *chan;
696
697 if (fd == -1) {
698 return NULL;
699 }
700
701 chan = g_io_channel_unix_new(fd);
702
703 g_io_channel_set_encoding(chan, NULL, NULL);
704 g_io_channel_set_buffered(chan, FALSE);
705
706 return chan;
707}
44ab9ed4 708#endif
96c63847 709
76a9644b
AL		 710static GIOChannel *io_channel_from_socket(int fd)
711{
712 GIOChannel *chan;
713
714 if (fd == -1) {
715 return NULL;
716 }
717
718#ifdef _WIN32
719 chan = g_io_channel_win32_new_socket(fd);
720#else
721 chan = g_io_channel_unix_new(fd);
722#endif
723
724 g_io_channel_set_encoding(chan, NULL, NULL);
725 g_io_channel_set_buffered(chan, FALSE);
726
727 return chan;
728}
729
684a096e 730static int io_channel_send(GIOChannel *fd, const void *buf, size_t len)
96c63847
AL		 731{
732 GIOStatus status;
684a096e 733 size_t offset;
96c63847 734
684a096e
AL		 735 offset = 0;
736 while (offset < len) {
737 gsize bytes_written;
738
739 status = g_io_channel_write_chars(fd, buf + offset, len - offset,
96c63847
AL		 740 &bytes_written, NULL);
741 if (status != G_IO_STATUS_NORMAL) {
23673ca7 742 if (status == G_IO_STATUS_AGAIN) {
684a096e
AL		 743 /* If we've written any data, return a partial write. */
744 if (offset) {
745 break;
746 }
23673ca7 747 errno = EAGAIN;
23673ca7
AL		 748 } else {
749 errno = EINVAL;
96c63847 750 }
684a096e
AL		 751
752 return -1;
96c63847
AL		 753 } else if (status == G_IO_STATUS_EOF) {
754 break;
96c63847 755 }
684a096e
AL		 756
757 offset += bytes_written;
96c63847 758 }
684a096e
AL		 759
760 return offset;
96c63847 761}
96c63847 762
44ab9ed4
BS		 763#ifndef _WIN32
764
a29753f8
AL		 765typedef struct FDCharDriver {
766 CharDriverState *chr;
767 GIOChannel *fd_in, *fd_out;
768 guint fd_in_tag;
6f97dba0 769 int max_size;
a29753f8 770 QTAILQ_ENTRY(FDCharDriver) node;
6f97dba0
AL		 771} FDCharDriver;
772
6f97dba0
AL		 773static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
774{
775 FDCharDriver *s = chr->opaque;
a29753f8 776
684a096e 777 return io_channel_send(s->fd_out, buf, len);
6f97dba0
AL		 778}
779
a29753f8 780static gboolean fd_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 781{
782 CharDriverState *chr = opaque;
783 FDCharDriver *s = chr->opaque;
a29753f8 784 int len;
9bd7854e 785 uint8_t buf[READ_BUF_LEN];
a29753f8
AL		 786 GIOStatus status;
787 gsize bytes_read;
6f97dba0
AL		 788
789 len = sizeof(buf);
a29753f8 790 if (len > s->max_size) {
6f97dba0 791 len = s->max_size;
a29753f8
AL		 792 }
793 if (len == 0) {
794 return FALSE;
795 }
796
797 status = g_io_channel_read_chars(chan, (gchar *)buf,
798 len, &bytes_read, NULL);
799 if (status == G_IO_STATUS_EOF) {
a425d23f 800 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
a29753f8 801 return FALSE;
6f97dba0 802 }
a29753f8
AL		 803 if (status == G_IO_STATUS_NORMAL) {
804 qemu_chr_be_write(chr, buf, bytes_read);
6f97dba0 805 }
a29753f8
AL		 806
807 return TRUE;
808}
809
810static int fd_chr_read_poll(void *opaque)
811{
812 CharDriverState *chr = opaque;
813 FDCharDriver *s = chr->opaque;
814
815 s->max_size = qemu_chr_be_can_write(chr);
816 return s->max_size;
6f97dba0
AL		 817}
818
23673ca7
AL		 819static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
820{
821 FDCharDriver *s = chr->opaque;
822 return g_io_create_watch(s->fd_out, cond);
823}
824
6f97dba0
AL		 825static void fd_chr_update_read_handler(CharDriverState *chr)
826{
827 FDCharDriver *s = chr->opaque;
828
a29753f8
AL		 829 if (s->fd_in_tag) {
830 g_source_remove(s->fd_in_tag);
831 }
832
833 if (s->fd_in) {
834 s->fd_in_tag = io_add_watch_poll(s->fd_in, fd_chr_read_poll, fd_chr_read, chr);
6f97dba0
AL		 835 }
836}
837
838static void fd_chr_close(struct CharDriverState *chr)
839{
840 FDCharDriver *s = chr->opaque;
841
a29753f8
AL		 842 if (s->fd_in_tag) {
843 g_source_remove(s->fd_in_tag);
844 s->fd_in_tag = 0;
845 }
846
847 if (s->fd_in) {
848 g_io_channel_unref(s->fd_in);
849 }
850 if (s->fd_out) {
851 g_io_channel_unref(s->fd_out);
6f97dba0
AL		 852 }
853
7267c094 854 g_free(s);
a425d23f 855 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 856}
857
858/* open a character device to a unix fd */
859static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
860{
861 CharDriverState *chr;
862 FDCharDriver *s;
863
7267c094
AL		 864 chr = g_malloc0(sizeof(CharDriverState));
865 s = g_malloc0(sizeof(FDCharDriver));
a29753f8
AL		 866 s->fd_in = io_channel_from_fd(fd_in);
867 s->fd_out = io_channel_from_fd(fd_out);
23673ca7 868 fcntl(fd_out, F_SETFL, O_NONBLOCK);
a29753f8 869 s->chr = chr;
6f97dba0 870 chr->opaque = s;
23673ca7 871 chr->chr_add_watch = fd_chr_add_watch;
6f97dba0
AL		 872 chr->chr_write = fd_chr_write;
873 chr->chr_update_read_handler = fd_chr_update_read_handler;
874 chr->chr_close = fd_chr_close;
875
fee204fd 876 qemu_chr_be_generic_open(chr);
6f97dba0
AL		 877
878 return chr;
879}
880
548cbb36 881static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
6f97dba0
AL		 882{
883 int fd_in, fd_out;
884 char filename_in[256], filename_out[256];
548cbb36 885 const char *filename = opts->device;
7d31544f
GH		 886
887 if (filename == NULL) {
888 fprintf(stderr, "chardev: pipe: no filename given\n");
1f51470d 889 return NULL;
7d31544f 890 }
6f97dba0
AL		 891
892 snprintf(filename_in, 256, "%s.in", filename);
893 snprintf(filename_out, 256, "%s.out", filename);
40ff6d7e
KW		 894 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
895 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
6f97dba0
AL		 896 if (fd_in < 0 || fd_out < 0) {
897 if (fd_in >= 0)
898 close(fd_in);
899 if (fd_out >= 0)
900 close(fd_out);
b181e047 901 TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
a89dd6c3 902 if (fd_in < 0) {
1f51470d 903 return NULL;
a89dd6c3 904 }
6f97dba0 905 }
1f51470d 906 return qemu_chr_open_fd(fd_in, fd_out);
6f97dba0
AL		 907}
908
6f97dba0
AL		 909/* init terminal so that we can grab keys */
910static struct termios oldtty;
911static int old_fd0_flags;
bb002513 912static bool stdio_allow_signal;
6f97dba0
AL		 913
914static void term_exit(void)
915{
916 tcsetattr (0, TCSANOW, &oldtty);
917 fcntl(0, F_SETFL, old_fd0_flags);
918}
919
bb002513 920static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
6f97dba0
AL		 921{
922 struct termios tty;
923
0369364b 924 tty = oldtty;
bb002513
PB		 925 if (!echo) {
926 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
6f97dba0 927 |INLCR|IGNCR|ICRNL|IXON);
bb002513
PB		 928 tty.c_oflag |= OPOST;
929 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
930 tty.c_cflag &= ~(CSIZE|PARENB);
931 tty.c_cflag |= CS8;
932 tty.c_cc[VMIN] = 1;
933 tty.c_cc[VTIME] = 0;
934 }
6f97dba0 935 /* if graphical mode, we allow Ctrl-C handling */
bb002513 936 if (!stdio_allow_signal)
6f97dba0 937 tty.c_lflag &= ~ISIG;
6f97dba0
AL		 938
939 tcsetattr (0, TCSANOW, &tty);
6f97dba0
AL		 940}
941
942static void qemu_chr_close_stdio(struct CharDriverState *chr)
943{
944 term_exit();
6f97dba0
AL		 945 fd_chr_close(chr);
946}
947
7c358031 948static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
6f97dba0
AL		 949{
950 CharDriverState *chr;
951
ab51b1d5
MT		 952 if (is_daemonized()) {
953 error_report("cannot use stdio with -daemonize");
954 return NULL;
955 }
ed7a1540
AL		 956 old_fd0_flags = fcntl(0, F_GETFL);
957 tcgetattr (0, &oldtty);
958 fcntl(0, F_SETFL, O_NONBLOCK);
959 atexit(term_exit);
0369364b 960
6f97dba0
AL		 961 chr = qemu_chr_open_fd(0, 1);
962 chr->chr_close = qemu_chr_close_stdio;
bb002513 963 chr->chr_set_echo = qemu_chr_set_echo_stdio;
7c358031
GH		 964 stdio_allow_signal = display_type != DT_NOGRAPHIC;
965 if (opts->has_signal) {
966 stdio_allow_signal = opts->signal;
967 }
15f31519 968 qemu_chr_fe_set_echo(chr, false);
6f97dba0 969
1f51470d 970 return chr;
6f97dba0
AL		 971}
972
973#ifdef __sun__
974/* Once Solaris has openpty(), this is going to be removed. */
3f4cb3d3
BS		 975static int openpty(int *amaster, int *aslave, char *name,
976 struct termios *termp, struct winsize *winp)
6f97dba0
AL		 977{
978 const char *slave;
979 int mfd = -1, sfd = -1;
980
981 *amaster = *aslave = -1;
982
983 mfd = open("/dev/ptmx", O_RDWR | O_NOCTTY);
984 if (mfd < 0)
985 goto err;
986
987 if (grantpt(mfd) == -1 || unlockpt(mfd) == -1)
988 goto err;
989
990 if ((slave = ptsname(mfd)) == NULL)
991 goto err;
992
993 if ((sfd = open(slave, O_RDONLY | O_NOCTTY)) == -1)
994 goto err;
995
996 if (ioctl(sfd, I_PUSH, "ptem") == -1 ||
997 (termp != NULL && tcgetattr(sfd, termp) < 0))
998 goto err;
999
1000 if (amaster)
1001 *amaster = mfd;
1002 if (aslave)
1003 *aslave = sfd;
1004 if (winp)
1005 ioctl(sfd, TIOCSWINSZ, winp);
1006
1007 return 0;
1008
1009err:
1010 if (sfd != -1)
1011 close(sfd);
1012 close(mfd);
1013 return -1;
1014}
1015
3f4cb3d3 1016static void cfmakeraw (struct termios *termios_p)
6f97dba0
AL		 1017{
1018 termios_p->c_iflag &=
1019 ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
1020 termios_p->c_oflag &= ~OPOST;
1021 termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
1022 termios_p->c_cflag &= ~(CSIZE|PARENB);
1023 termios_p->c_cflag |= CS8;
1024
1025 termios_p->c_cc[VMIN] = 0;
1026 termios_p->c_cc[VTIME] = 0;
1027}
1028#endif
1029
1030#if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
a167ba50
AJ		 1031 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
1032 || defined(__GLIBC__)
6f97dba0 1033
e551498e
GH		 1034#define HAVE_CHARDEV_TTY 1
1035
6f97dba0 1036typedef struct {
093d3a20
AL		 1037 GIOChannel *fd;
1038 guint fd_tag;
6f97dba0
AL		 1039 int connected;
1040 int polling;
1041 int read_bytes;
8aa33caf 1042 guint timer_tag;
6f97dba0
AL		 1043} PtyCharDriver;
1044
1045static void pty_chr_update_read_handler(CharDriverState *chr);
1046static void pty_chr_state(CharDriverState *chr, int connected);
1047
8aa33caf
AL		 1048static gboolean pty_chr_timer(gpointer opaque)
1049{
1050 struct CharDriverState *chr = opaque;
1051 PtyCharDriver *s = chr->opaque;
1052
1053 if (s->connected) {
1054 goto out;
1055 }
1056 if (s->polling) {
1057 /* If we arrive here without polling being cleared due
1058 * read returning -EIO, then we are (re-)connected */
1059 pty_chr_state(chr, 1);
1060 goto out;
1061 }
1062
1063 /* Next poll ... */
1064 pty_chr_update_read_handler(chr);
1065
1066out:
1067 return FALSE;
1068}
1069
1070static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
1071{
1072 PtyCharDriver *s = chr->opaque;
1073
1074 if (s->timer_tag) {
1075 g_source_remove(s->timer_tag);
1076 s->timer_tag = 0;
1077 }
1078
1079 if (ms == 1000) {
1080 s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
1081 } else {
1082 s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
1083 }
1084}
1085
6f97dba0
AL		 1086static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1087{
1088 PtyCharDriver *s = chr->opaque;
1089
1090 if (!s->connected) {
1091 /* guest sends data, check for (re-)connect */
1092 pty_chr_update_read_handler(chr);
1093 return 0;
1094 }
684a096e 1095 return io_channel_send(s->fd, buf, len);
6f97dba0
AL		 1096}
1097
e6a87ed8
AL		 1098static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1099{
1100 PtyCharDriver *s = chr->opaque;
1101 return g_io_create_watch(s->fd, cond);
1102}
1103
6f97dba0
AL		 1104static int pty_chr_read_poll(void *opaque)
1105{
1106 CharDriverState *chr = opaque;
1107 PtyCharDriver *s = chr->opaque;
1108
909cda12 1109 s->read_bytes = qemu_chr_be_can_write(chr);
6f97dba0
AL		 1110 return s->read_bytes;
1111}
1112
093d3a20 1113static gboolean pty_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 1114{
1115 CharDriverState *chr = opaque;
1116 PtyCharDriver *s = chr->opaque;
093d3a20 1117 gsize size, len;
9bd7854e 1118 uint8_t buf[READ_BUF_LEN];
093d3a20 1119 GIOStatus status;
6f97dba0
AL		 1120
1121 len = sizeof(buf);
1122 if (len > s->read_bytes)
1123 len = s->read_bytes;
1124 if (len == 0)
093d3a20
AL		 1125 return FALSE;
1126 status = g_io_channel_read_chars(s->fd, (gchar *)buf, len, &size, NULL);
1127 if (status != G_IO_STATUS_NORMAL) {
6f97dba0 1128 pty_chr_state(chr, 0);
093d3a20
AL		 1129 return FALSE;
1130 } else {
6f97dba0 1131 pty_chr_state(chr, 1);
fa5efccb 1132 qemu_chr_be_write(chr, buf, size);
6f97dba0 1133 }
093d3a20 1134 return TRUE;
6f97dba0
AL		 1135}
1136
1137static void pty_chr_update_read_handler(CharDriverState *chr)
1138{
1139 PtyCharDriver *s = chr->opaque;
1140
093d3a20
AL		 1141 if (s->fd_tag) {
1142 g_source_remove(s->fd_tag);
1143 }
1144
1145 s->fd_tag = io_add_watch_poll(s->fd, pty_chr_read_poll, pty_chr_read, chr);
6f97dba0
AL		 1146 s->polling = 1;
1147 /*
1148 * Short timeout here: just need wait long enougth that qemu makes
1149 * it through the poll loop once. When reconnected we want a
1150 * short timeout so we notice it almost instantly. Otherwise
1151 * read() gives us -EIO instantly, making pty_chr_state() reset the
1152 * timeout to the normal (much longer) poll interval before the
1153 * timer triggers.
1154 */
8aa33caf 1155 pty_chr_rearm_timer(chr, 10);
6f97dba0
AL		 1156}
1157
1158static void pty_chr_state(CharDriverState *chr, int connected)
1159{
1160 PtyCharDriver *s = chr->opaque;
1161
1162 if (!connected) {
093d3a20
AL		 1163 g_source_remove(s->fd_tag);
1164 s->fd_tag = 0;
6f97dba0
AL		 1165 s->connected = 0;
1166 s->polling = 0;
1167 /* (re-)connect poll interval for idle guests: once per second.
1168 * We check more frequently in case the guests sends data to
1169 * the virtual device linked to our pty. */
8aa33caf 1170 pty_chr_rearm_timer(chr, 1000);
6f97dba0
AL		 1171 } else {
1172 if (!s->connected)
fee204fd 1173 qemu_chr_be_generic_open(chr);
6f97dba0
AL		 1174 s->connected = 1;
1175 }
1176}
1177
6f97dba0
AL		 1178
1179static void pty_chr_close(struct CharDriverState *chr)
1180{
1181 PtyCharDriver *s = chr->opaque;
093d3a20 1182 int fd;
6f97dba0 1183
093d3a20
AL		 1184 if (s->fd_tag) {
1185 g_source_remove(s->fd_tag);
1186 }
1187 fd = g_io_channel_unix_get_fd(s->fd);
1188 g_io_channel_unref(s->fd);
1189 close(fd);
8aa33caf
AL		 1190 if (s->timer_tag) {
1191 g_source_remove(s->timer_tag);
1192 }
7267c094 1193 g_free(s);
a425d23f 1194 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1195}
1196
e68c5958
GH		 1197static CharDriverState *qemu_chr_open_pty(const char *id,
1198 ChardevReturn *ret)
6f97dba0
AL		 1199{
1200 CharDriverState *chr;
1201 PtyCharDriver *s;
1202 struct termios tty;
e68c5958 1203 int master_fd, slave_fd;
c5e97233 1204#if defined(__OpenBSD__) || defined(__DragonFly__)
6f97dba0
AL		 1205 char pty_name[PATH_MAX];
1206#define q_ptsname(x) pty_name
1207#else
1208 char *pty_name = NULL;
1209#define q_ptsname(x) ptsname(x)
1210#endif
1211
a4e26048 1212 if (openpty(&master_fd, &slave_fd, pty_name, NULL, NULL) < 0) {
1f51470d 1213 return NULL;
6f97dba0
AL		 1214 }
1215
1216 /* Set raw attributes on the pty. */
c3b972c3 1217 tcgetattr(slave_fd, &tty);
6f97dba0
AL		 1218 cfmakeraw(&tty);
1219 tcsetattr(slave_fd, TCSAFLUSH, &tty);
1220 close(slave_fd);
1221
a4e26048
MA		 1222 chr = g_malloc0(sizeof(CharDriverState));
1223
e68c5958
GH		 1224 chr->filename = g_strdup_printf("pty:%s", q_ptsname(master_fd));
1225 ret->pty = g_strdup(q_ptsname(master_fd));
1226 ret->has_pty = true;
58650218 1227
e68c5958
GH		 1228 fprintf(stderr, "char device redirected to %s (label %s)\n",
1229 q_ptsname(master_fd), id);
6f97dba0 1230
a4e26048 1231 s = g_malloc0(sizeof(PtyCharDriver));
6f97dba0
AL		 1232 chr->opaque = s;
1233 chr->chr_write = pty_chr_write;
1234 chr->chr_update_read_handler = pty_chr_update_read_handler;
1235 chr->chr_close = pty_chr_close;
e6a87ed8 1236 chr->chr_add_watch = pty_chr_add_watch;
6f97dba0 1237
093d3a20 1238 s->fd = io_channel_from_fd(master_fd);
8aa33caf 1239 s->timer_tag = 0;
6f97dba0 1240
1f51470d 1241 return chr;
6f97dba0
AL		 1242}
1243
1244static void tty_serial_init(int fd, int speed,
1245 int parity, int data_bits, int stop_bits)
1246{
1247 struct termios tty;
1248 speed_t spd;
1249
1250#if 0
1251 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1252 speed, parity, data_bits, stop_bits);
1253#endif
1254 tcgetattr (fd, &tty);
1255
45eea13b
SW		 1256#define check_speed(val) if (speed <= val) { spd = B##val; break; }
1257 speed = speed * 10 / 11;
1258 do {
1259 check_speed(50);
1260 check_speed(75);
1261 check_speed(110);
1262 check_speed(134);
1263 check_speed(150);
1264 check_speed(200);
1265 check_speed(300);
1266 check_speed(600);
1267 check_speed(1200);
1268 check_speed(1800);
1269 check_speed(2400);
1270 check_speed(4800);
1271 check_speed(9600);
1272 check_speed(19200);
1273 check_speed(38400);
1274 /* Non-Posix values follow. They may be unsupported on some systems. */
1275 check_speed(57600);
1276 check_speed(115200);
1277#ifdef B230400
1278 check_speed(230400);
1279#endif
1280#ifdef B460800
1281 check_speed(460800);
1282#endif
1283#ifdef B500000
1284 check_speed(500000);
1285#endif
1286#ifdef B576000
1287 check_speed(576000);
1288#endif
1289#ifdef B921600
1290 check_speed(921600);
1291#endif
1292#ifdef B1000000
1293 check_speed(1000000);
1294#endif
1295#ifdef B1152000
1296 check_speed(1152000);
1297#endif
1298#ifdef B1500000
1299 check_speed(1500000);
1300#endif
1301#ifdef B2000000
1302 check_speed(2000000);
1303#endif
1304#ifdef B2500000
1305 check_speed(2500000);
1306#endif
1307#ifdef B3000000
1308 check_speed(3000000);
1309#endif
1310#ifdef B3500000
1311 check_speed(3500000);
1312#endif
1313#ifdef B4000000
1314 check_speed(4000000);
1315#endif
6f97dba0 1316 spd = B115200;
45eea13b 1317 } while (0);
6f97dba0
AL		 1318
1319 cfsetispeed(&tty, spd);
1320 cfsetospeed(&tty, spd);
1321
1322 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1323 |INLCR|IGNCR|ICRNL|IXON);
1324 tty.c_oflag |= OPOST;
1325 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1326 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1327 switch(data_bits) {
1328 default:
1329 case 8:
1330 tty.c_cflag |= CS8;
1331 break;
1332 case 7:
1333 tty.c_cflag |= CS7;
1334 break;
1335 case 6:
1336 tty.c_cflag |= CS6;
1337 break;
1338 case 5:
1339 tty.c_cflag |= CS5;
1340 break;
1341 }
1342 switch(parity) {
1343 default:
1344 case 'N':
1345 break;
1346 case 'E':
1347 tty.c_cflag |= PARENB;
1348 break;
1349 case 'O':
1350 tty.c_cflag |= PARENB | PARODD;
1351 break;
1352 }
1353 if (stop_bits == 2)
1354 tty.c_cflag |= CSTOPB;
1355
1356 tcsetattr (fd, TCSANOW, &tty);
1357}
1358
1359static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1360{
1361 FDCharDriver *s = chr->opaque;
1362
1363 switch(cmd) {
1364 case CHR_IOCTL_SERIAL_SET_PARAMS:
1365 {
1366 QEMUSerialSetParams *ssp = arg;
a29753f8
AL		 1367 tty_serial_init(g_io_channel_unix_get_fd(s->fd_in),
1368 ssp->speed, ssp->parity,
6f97dba0
AL		 1369 ssp->data_bits, ssp->stop_bits);
1370 }
1371 break;
1372 case CHR_IOCTL_SERIAL_SET_BREAK:
1373 {
1374 int enable = *(int *)arg;
a29753f8
AL		 1375 if (enable) {
1376 tcsendbreak(g_io_channel_unix_get_fd(s->fd_in), 1);
1377 }
6f97dba0
AL		 1378 }
1379 break;
1380 case CHR_IOCTL_SERIAL_GET_TIOCM:
1381 {
1382 int sarg = 0;
1383 int *targ = (int *)arg;
a29753f8 1384 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &sarg);
6f97dba0 1385 *targ = 0;
b4abdfa4 1386 if (sarg & TIOCM_CTS)
6f97dba0 1387 *targ |= CHR_TIOCM_CTS;
b4abdfa4 1388 if (sarg & TIOCM_CAR)
6f97dba0 1389 *targ |= CHR_TIOCM_CAR;
b4abdfa4 1390 if (sarg & TIOCM_DSR)
6f97dba0 1391 *targ |= CHR_TIOCM_DSR;
b4abdfa4 1392 if (sarg & TIOCM_RI)
6f97dba0 1393 *targ |= CHR_TIOCM_RI;
b4abdfa4 1394 if (sarg & TIOCM_DTR)
6f97dba0 1395 *targ |= CHR_TIOCM_DTR;
b4abdfa4 1396 if (sarg & TIOCM_RTS)
6f97dba0
AL		 1397 *targ |= CHR_TIOCM_RTS;
1398 }
1399 break;
1400 case CHR_IOCTL_SERIAL_SET_TIOCM:
1401 {
1402 int sarg = *(int *)arg;
1403 int targ = 0;
a29753f8 1404 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &targ);
b4abdfa4
AJ		 1405 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1406 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1407 if (sarg & CHR_TIOCM_CTS)
1408 targ |= TIOCM_CTS;
1409 if (sarg & CHR_TIOCM_CAR)
1410 targ |= TIOCM_CAR;
1411 if (sarg & CHR_TIOCM_DSR)
1412 targ |= TIOCM_DSR;
1413 if (sarg & CHR_TIOCM_RI)
1414 targ |= TIOCM_RI;
1415 if (sarg & CHR_TIOCM_DTR)
6f97dba0 1416 targ |= TIOCM_DTR;
b4abdfa4 1417 if (sarg & CHR_TIOCM_RTS)
6f97dba0 1418 targ |= TIOCM_RTS;
a29753f8 1419 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMSET, &targ);
6f97dba0
AL		 1420 }
1421 break;
1422 default:
1423 return -ENOTSUP;
1424 }
1425 return 0;
1426}
1427
4266a134
DA		 1428static void qemu_chr_close_tty(CharDriverState *chr)
1429{
1430 FDCharDriver *s = chr->opaque;
1431 int fd = -1;
1432
1433 if (s) {
a29753f8 1434 fd = g_io_channel_unix_get_fd(s->fd_in);
4266a134
DA		 1435 }
1436
1437 fd_chr_close(chr);
1438
1439 if (fd >= 0) {
1440 close(fd);
1441 }
1442}
1443
d59044ef
GH		 1444static CharDriverState *qemu_chr_open_tty_fd(int fd)
1445{
1446 CharDriverState *chr;
1447
1448 tty_serial_init(fd, 115200, 'N', 8, 1);
1449 chr = qemu_chr_open_fd(fd, fd);
1450 chr->chr_ioctl = tty_serial_ioctl;
1451 chr->chr_close = qemu_chr_close_tty;
1452 return chr;
1453}
6f97dba0
AL		 1454#endif /* __linux__ || __sun__ */
1455
1456#if defined(__linux__)
e551498e
GH		 1457
1458#define HAVE_CHARDEV_PARPORT 1
1459
6f97dba0
AL		 1460typedef struct {
1461 int fd;
1462 int mode;
1463} ParallelCharDriver;
1464
1465static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1466{
1467 if (s->mode != mode) {
1468 int m = mode;
1469 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1470 return 0;
1471 s->mode = mode;
1472 }
1473 return 1;
1474}
1475
1476static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1477{
1478 ParallelCharDriver *drv = chr->opaque;
1479 int fd = drv->fd;
1480 uint8_t b;
1481
1482 switch(cmd) {
1483 case CHR_IOCTL_PP_READ_DATA:
1484 if (ioctl(fd, PPRDATA, &b) < 0)
1485 return -ENOTSUP;
1486 *(uint8_t *)arg = b;
1487 break;
1488 case CHR_IOCTL_PP_WRITE_DATA:
1489 b = *(uint8_t *)arg;
1490 if (ioctl(fd, PPWDATA, &b) < 0)
1491 return -ENOTSUP;
1492 break;
1493 case CHR_IOCTL_PP_READ_CONTROL:
1494 if (ioctl(fd, PPRCONTROL, &b) < 0)
1495 return -ENOTSUP;
1496 /* Linux gives only the lowest bits, and no way to know data
1497 direction! For better compatibility set the fixed upper
1498 bits. */
1499 *(uint8_t *)arg = b | 0xc0;
1500 break;
1501 case CHR_IOCTL_PP_WRITE_CONTROL:
1502 b = *(uint8_t *)arg;
1503 if (ioctl(fd, PPWCONTROL, &b) < 0)
1504 return -ENOTSUP;
1505 break;
1506 case CHR_IOCTL_PP_READ_STATUS:
1507 if (ioctl(fd, PPRSTATUS, &b) < 0)
1508 return -ENOTSUP;
1509 *(uint8_t *)arg = b;
1510 break;
1511 case CHR_IOCTL_PP_DATA_DIR:
1512 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1513 return -ENOTSUP;
1514 break;
1515 case CHR_IOCTL_PP_EPP_READ_ADDR:
1516 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1517 struct ParallelIOArg *parg = arg;
1518 int n = read(fd, parg->buffer, parg->count);
1519 if (n != parg->count) {
1520 return -EIO;
1521 }
1522 }
1523 break;
1524 case CHR_IOCTL_PP_EPP_READ:
1525 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1526 struct ParallelIOArg *parg = arg;
1527 int n = read(fd, parg->buffer, parg->count);
1528 if (n != parg->count) {
1529 return -EIO;
1530 }
1531 }
1532 break;
1533 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1534 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1535 struct ParallelIOArg *parg = arg;
1536 int n = write(fd, parg->buffer, parg->count);
1537 if (n != parg->count) {
1538 return -EIO;
1539 }
1540 }
1541 break;
1542 case CHR_IOCTL_PP_EPP_WRITE:
1543 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1544 struct ParallelIOArg *parg = arg;
1545 int n = write(fd, parg->buffer, parg->count);
1546 if (n != parg->count) {
1547 return -EIO;
1548 }
1549 }
1550 break;
1551 default:
1552 return -ENOTSUP;
1553 }
1554 return 0;
1555}
1556
1557static void pp_close(CharDriverState *chr)
1558{
1559 ParallelCharDriver *drv = chr->opaque;
1560 int fd = drv->fd;
1561
1562 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1563 ioctl(fd, PPRELEASE);
1564 close(fd);
7267c094 1565 g_free(drv);
a425d23f 1566 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1567}
1568
88a946d3 1569static CharDriverState *qemu_chr_open_pp_fd(int fd)
6f97dba0
AL		 1570{
1571 CharDriverState *chr;
1572 ParallelCharDriver *drv;
6f97dba0
AL		 1573
1574 if (ioctl(fd, PPCLAIM) < 0) {
1575 close(fd);
1f51470d 1576 return NULL;
6f97dba0
AL		 1577 }
1578
7267c094 1579 drv = g_malloc0(sizeof(ParallelCharDriver));
6f97dba0
AL		 1580 drv->fd = fd;
1581 drv->mode = IEEE1284_MODE_COMPAT;
1582
7267c094 1583 chr = g_malloc0(sizeof(CharDriverState));
6f97dba0
AL		 1584 chr->chr_write = null_chr_write;
1585 chr->chr_ioctl = pp_ioctl;
1586 chr->chr_close = pp_close;
1587 chr->opaque = drv;
1588
fee204fd 1589 qemu_chr_be_generic_open(chr);
6f97dba0 1590
1f51470d 1591 return chr;
6f97dba0
AL		 1592}
1593#endif /* __linux__ */
1594
a167ba50 1595#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
e551498e
GH		 1596
1597#define HAVE_CHARDEV_PARPORT 1
1598
6972f935
BS		 1599static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1600{
e0efb993 1601 int fd = (int)(intptr_t)chr->opaque;
6972f935
BS		 1602 uint8_t b;
1603
1604 switch(cmd) {
1605 case CHR_IOCTL_PP_READ_DATA:
1606 if (ioctl(fd, PPIGDATA, &b) < 0)
1607 return -ENOTSUP;
1608 *(uint8_t *)arg = b;
1609 break;
1610 case CHR_IOCTL_PP_WRITE_DATA:
1611 b = *(uint8_t *)arg;
1612 if (ioctl(fd, PPISDATA, &b) < 0)
1613 return -ENOTSUP;
1614 break;
1615 case CHR_IOCTL_PP_READ_CONTROL:
1616 if (ioctl(fd, PPIGCTRL, &b) < 0)
1617 return -ENOTSUP;
1618 *(uint8_t *)arg = b;
1619 break;
1620 case CHR_IOCTL_PP_WRITE_CONTROL:
1621 b = *(uint8_t *)arg;
1622 if (ioctl(fd, PPISCTRL, &b) < 0)
1623 return -ENOTSUP;
1624 break;
1625 case CHR_IOCTL_PP_READ_STATUS:
1626 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1627 return -ENOTSUP;
1628 *(uint8_t *)arg = b;
1629 break;
1630 default:
1631 return -ENOTSUP;
1632 }
1633 return 0;
1634}
1635
88a946d3 1636static CharDriverState *qemu_chr_open_pp_fd(int fd)
6972f935
BS		 1637{
1638 CharDriverState *chr;
6972f935 1639
7267c094 1640 chr = g_malloc0(sizeof(CharDriverState));
e0efb993 1641 chr->opaque = (void *)(intptr_t)fd;
6972f935
BS		 1642 chr->chr_write = null_chr_write;
1643 chr->chr_ioctl = pp_ioctl;
1f51470d 1644 return chr;
6972f935
BS		 1645}
1646#endif
1647
6f97dba0
AL		 1648#else /* _WIN32 */
1649
1650typedef struct {
1651 int max_size;
1652 HANDLE hcom, hrecv, hsend;
1653 OVERLAPPED orecv, osend;
1654 BOOL fpipe;
1655 DWORD len;
1656} WinCharState;
1657
db418a0a
FC		 1658typedef struct {
1659 HANDLE hStdIn;
1660 HANDLE hInputReadyEvent;
1661 HANDLE hInputDoneEvent;
1662 HANDLE hInputThread;
1663 uint8_t win_stdio_buf;
1664} WinStdioCharState;
1665
6f97dba0
AL		 1666#define NSENDBUF 2048
1667#define NRECVBUF 2048
1668#define MAXCONNECT 1
1669#define NTIMEOUT 5000
1670
1671static int win_chr_poll(void *opaque);
1672static int win_chr_pipe_poll(void *opaque);
1673
1674static void win_chr_close(CharDriverState *chr)
1675{
1676 WinCharState *s = chr->opaque;
1677
1678 if (s->hsend) {
1679 CloseHandle(s->hsend);
1680 s->hsend = NULL;
1681 }
1682 if (s->hrecv) {
1683 CloseHandle(s->hrecv);
1684 s->hrecv = NULL;
1685 }
1686 if (s->hcom) {
1687 CloseHandle(s->hcom);
1688 s->hcom = NULL;
1689 }
1690 if (s->fpipe)
1691 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1692 else
1693 qemu_del_polling_cb(win_chr_poll, chr);
793cbfb5 1694
a425d23f 1695 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1696}
1697
1698static int win_chr_init(CharDriverState *chr, const char *filename)
1699{
1700 WinCharState *s = chr->opaque;
1701 COMMCONFIG comcfg;
1702 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1703 COMSTAT comstat;
1704 DWORD size;
1705 DWORD err;
1706
1707 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1708 if (!s->hsend) {
1709 fprintf(stderr, "Failed CreateEvent\n");
1710 goto fail;
1711 }
1712 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1713 if (!s->hrecv) {
1714 fprintf(stderr, "Failed CreateEvent\n");
1715 goto fail;
1716 }
1717
1718 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1719 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1720 if (s->hcom == INVALID_HANDLE_VALUE) {
1721 fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
1722 s->hcom = NULL;
1723 goto fail;
1724 }
1725
1726 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
1727 fprintf(stderr, "Failed SetupComm\n");
1728 goto fail;
1729 }
1730
1731 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1732 size = sizeof(COMMCONFIG);
1733 GetDefaultCommConfig(filename, &comcfg, &size);
1734 comcfg.dcb.DCBlength = sizeof(DCB);
1735 CommConfigDialog(filename, NULL, &comcfg);
1736
1737 if (!SetCommState(s->hcom, &comcfg.dcb)) {
1738 fprintf(stderr, "Failed SetCommState\n");
1739 goto fail;
1740 }
1741
1742 if (!SetCommMask(s->hcom, EV_ERR)) {
1743 fprintf(stderr, "Failed SetCommMask\n");
1744 goto fail;
1745 }
1746
1747 cto.ReadIntervalTimeout = MAXDWORD;
1748 if (!SetCommTimeouts(s->hcom, &cto)) {
1749 fprintf(stderr, "Failed SetCommTimeouts\n");
1750 goto fail;
1751 }
1752
1753 if (!ClearCommError(s->hcom, &err, &comstat)) {
1754 fprintf(stderr, "Failed ClearCommError\n");
1755 goto fail;
1756 }
1757 qemu_add_polling_cb(win_chr_poll, chr);
1758 return 0;
1759
1760 fail:
1761 win_chr_close(chr);
1762 return -1;
1763}
1764
1765static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1766{
1767 WinCharState *s = chr->opaque;
1768 DWORD len, ret, size, err;
1769
1770 len = len1;
1771 ZeroMemory(&s->osend, sizeof(s->osend));
1772 s->osend.hEvent = s->hsend;
1773 while (len > 0) {
1774 if (s->hsend)
1775 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1776 else
1777 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1778 if (!ret) {
1779 err = GetLastError();
1780 if (err == ERROR_IO_PENDING) {
1781 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1782 if (ret) {
1783 buf += size;
1784 len -= size;
1785 } else {
1786 break;
1787 }
1788 } else {
1789 break;
1790 }
1791 } else {
1792 buf += size;
1793 len -= size;
1794 }
1795 }
1796 return len1 - len;
1797}
1798
1799static int win_chr_read_poll(CharDriverState *chr)
1800{
1801 WinCharState *s = chr->opaque;
1802
909cda12 1803 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 1804 return s->max_size;
1805}
1806
1807static void win_chr_readfile(CharDriverState *chr)
1808{
1809 WinCharState *s = chr->opaque;
1810 int ret, err;
9bd7854e 1811 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 1812 DWORD size;
1813
1814 ZeroMemory(&s->orecv, sizeof(s->orecv));
1815 s->orecv.hEvent = s->hrecv;
1816 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
1817 if (!ret) {
1818 err = GetLastError();
1819 if (err == ERROR_IO_PENDING) {
1820 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
1821 }
1822 }
1823
1824 if (size > 0) {
fa5efccb 1825 qemu_chr_be_write(chr, buf, size);
6f97dba0
AL		 1826 }
1827}
1828
1829static void win_chr_read(CharDriverState *chr)
1830{
1831 WinCharState *s = chr->opaque;
1832
1833 if (s->len > s->max_size)
1834 s->len = s->max_size;
1835 if (s->len == 0)
1836 return;
1837
1838 win_chr_readfile(chr);
1839}
1840
1841static int win_chr_poll(void *opaque)
1842{
1843 CharDriverState *chr = opaque;
1844 WinCharState *s = chr->opaque;
1845 COMSTAT status;
1846 DWORD comerr;
1847
1848 ClearCommError(s->hcom, &comerr, &status);
1849 if (status.cbInQue > 0) {
1850 s->len = status.cbInQue;
1851 win_chr_read_poll(chr);
1852 win_chr_read(chr);
1853 return 1;
1854 }
1855 return 0;
1856}
1857
d59044ef 1858static CharDriverState *qemu_chr_open_win_path(const char *filename)
6f97dba0
AL		 1859{
1860 CharDriverState *chr;
1861 WinCharState *s;
1862
7267c094
AL		 1863 chr = g_malloc0(sizeof(CharDriverState));
1864 s = g_malloc0(sizeof(WinCharState));
6f97dba0
AL		 1865 chr->opaque = s;
1866 chr->chr_write = win_chr_write;
1867 chr->chr_close = win_chr_close;
1868
1869 if (win_chr_init(chr, filename) < 0) {
2e02e18b
SW		 1870 g_free(s);
1871 g_free(chr);
1f51470d 1872 return NULL;
6f97dba0 1873 }
fee204fd 1874 qemu_chr_be_generic_open(chr);
1f51470d 1875 return chr;
6f97dba0
AL		 1876}
1877
1878static int win_chr_pipe_poll(void *opaque)
1879{
1880 CharDriverState *chr = opaque;
1881 WinCharState *s = chr->opaque;
1882 DWORD size;
1883
1884 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
1885 if (size > 0) {
1886 s->len = size;
1887 win_chr_read_poll(chr);
1888 win_chr_read(chr);
1889 return 1;
1890 }
1891 return 0;
1892}
1893
1894static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
1895{
1896 WinCharState *s = chr->opaque;
1897 OVERLAPPED ov;
1898 int ret;
1899 DWORD size;
1900 char openname[256];
1901
1902 s->fpipe = TRUE;
1903
1904 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1905 if (!s->hsend) {
1906 fprintf(stderr, "Failed CreateEvent\n");
1907 goto fail;
1908 }
1909 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1910 if (!s->hrecv) {
1911 fprintf(stderr, "Failed CreateEvent\n");
1912 goto fail;
1913 }
1914
1915 snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
1916 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
1917 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
1918 PIPE_WAIT,
1919 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
1920 if (s->hcom == INVALID_HANDLE_VALUE) {
1921 fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
1922 s->hcom = NULL;
1923 goto fail;
1924 }
1925
1926 ZeroMemory(&ov, sizeof(ov));
1927 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
1928 ret = ConnectNamedPipe(s->hcom, &ov);
1929 if (ret) {
1930 fprintf(stderr, "Failed ConnectNamedPipe\n");
1931 goto fail;
1932 }
1933
1934 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
1935 if (!ret) {
1936 fprintf(stderr, "Failed GetOverlappedResult\n");
1937 if (ov.hEvent) {
1938 CloseHandle(ov.hEvent);
1939 ov.hEvent = NULL;
1940 }
1941 goto fail;
1942 }
1943
1944 if (ov.hEvent) {
1945 CloseHandle(ov.hEvent);
1946 ov.hEvent = NULL;
1947 }
1948 qemu_add_polling_cb(win_chr_pipe_poll, chr);
1949 return 0;
1950
1951 fail:
1952 win_chr_close(chr);
1953 return -1;
1954}
1955
1956
548cbb36 1957static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
6f97dba0 1958{
548cbb36 1959 const char *filename = opts->device;
6f97dba0
AL		 1960 CharDriverState *chr;
1961 WinCharState *s;
1962
7267c094
AL		 1963 chr = g_malloc0(sizeof(CharDriverState));
1964 s = g_malloc0(sizeof(WinCharState));
6f97dba0
AL		 1965 chr->opaque = s;
1966 chr->chr_write = win_chr_write;
1967 chr->chr_close = win_chr_close;
1968
1969 if (win_chr_pipe_init(chr, filename) < 0) {
2e02e18b
SW		 1970 g_free(s);
1971 g_free(chr);
1f51470d 1972 return NULL;
6f97dba0 1973 }
fee204fd 1974 qemu_chr_be_generic_open(chr);
1f51470d 1975 return chr;
6f97dba0
AL		 1976}
1977
1f51470d 1978static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
6f97dba0
AL		 1979{
1980 CharDriverState *chr;
1981 WinCharState *s;
1982
7267c094
AL		 1983 chr = g_malloc0(sizeof(CharDriverState));
1984 s = g_malloc0(sizeof(WinCharState));
6f97dba0
AL		 1985 s->hcom = fd_out;
1986 chr->opaque = s;
1987 chr->chr_write = win_chr_write;
fee204fd 1988 qemu_chr_be_generic_open(chr);
1f51470d 1989 return chr;
6f97dba0
AL		 1990}
1991
d9ac374f 1992static CharDriverState *qemu_chr_open_win_con(void)
6f97dba0 1993{
1f51470d 1994 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
6f97dba0
AL		 1995}
1996
db418a0a
FC		 1997static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
1998{
1999 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
2000 DWORD dwSize;
2001 int len1;
2002
2003 len1 = len;
2004
2005 while (len1 > 0) {
2006 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
2007 break;
2008 }
2009 buf += dwSize;
2010 len1 -= dwSize;
2011 }
2012
2013 return len - len1;
2014}
2015
2016static void win_stdio_wait_func(void *opaque)
2017{
2018 CharDriverState *chr = opaque;
2019 WinStdioCharState *stdio = chr->opaque;
2020 INPUT_RECORD buf[4];
2021 int ret;
2022 DWORD dwSize;
2023 int i;
2024
2025 ret = ReadConsoleInput(stdio->hStdIn, buf, sizeof(buf) / sizeof(*buf),
2026 &dwSize);
2027
2028 if (!ret) {
2029 /* Avoid error storm */
2030 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2031 return;
2032 }
2033
2034 for (i = 0; i < dwSize; i++) {
2035 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
2036
2037 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
2038 int j;
2039 if (kev->uChar.AsciiChar != 0) {
2040 for (j = 0; j < kev->wRepeatCount; j++) {
2041 if (qemu_chr_be_can_write(chr)) {
2042 uint8_t c = kev->uChar.AsciiChar;
2043 qemu_chr_be_write(chr, &c, 1);
2044 }
2045 }
2046 }
2047 }
2048 }
2049}
2050
2051static DWORD WINAPI win_stdio_thread(LPVOID param)
2052{
2053 CharDriverState *chr = param;
2054 WinStdioCharState *stdio = chr->opaque;
2055 int ret;
2056 DWORD dwSize;
2057
2058 while (1) {
2059
2060 /* Wait for one byte */
2061 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
2062
2063 /* Exit in case of error, continue if nothing read */
2064 if (!ret) {
2065 break;
2066 }
2067 if (!dwSize) {
2068 continue;
2069 }
2070
2071 /* Some terminal emulator returns \r\n for Enter, just pass \n */
2072 if (stdio->win_stdio_buf == '\r') {
2073 continue;
2074 }
2075
2076 /* Signal the main thread and wait until the byte was eaten */
2077 if (!SetEvent(stdio->hInputReadyEvent)) {
2078 break;
2079 }
2080 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
2081 != WAIT_OBJECT_0) {
2082 break;
2083 }
2084 }
2085
2086 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2087 return 0;
2088}
2089
2090static void win_stdio_thread_wait_func(void *opaque)
2091{
2092 CharDriverState *chr = opaque;
2093 WinStdioCharState *stdio = chr->opaque;
2094
2095 if (qemu_chr_be_can_write(chr)) {
2096 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
2097 }
2098
2099 SetEvent(stdio->hInputDoneEvent);
2100}
2101
2102static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
2103{
2104 WinStdioCharState *stdio = chr->opaque;
2105 DWORD dwMode = 0;
2106
2107 GetConsoleMode(stdio->hStdIn, &dwMode);
2108
2109 if (echo) {
2110 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
2111 } else {
2112 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
2113 }
2114}
2115
2116static void win_stdio_close(CharDriverState *chr)
2117{
2118 WinStdioCharState *stdio = chr->opaque;
2119
2120 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
2121 CloseHandle(stdio->hInputReadyEvent);
2122 }
2123 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
2124 CloseHandle(stdio->hInputDoneEvent);
2125 }
2126 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
2127 TerminateThread(stdio->hInputThread, 0);
2128 }
2129
2130 g_free(chr->opaque);
2131 g_free(chr);
db418a0a
FC		 2132}
2133
7c358031 2134static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
db418a0a
FC		 2135{
2136 CharDriverState *chr;
2137 WinStdioCharState *stdio;
2138 DWORD dwMode;
2139 int is_console = 0;
2140
db418a0a
FC		 2141 chr = g_malloc0(sizeof(CharDriverState));
2142 stdio = g_malloc0(sizeof(WinStdioCharState));
2143
2144 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
2145 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
2146 fprintf(stderr, "cannot open stdio: invalid handle\n");
2147 exit(1);
2148 }
2149
2150 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
2151
2152 chr->opaque = stdio;
2153 chr->chr_write = win_stdio_write;
2154 chr->chr_close = win_stdio_close;
2155
ed7a1540
AL		 2156 if (is_console) {
2157 if (qemu_add_wait_object(stdio->hStdIn,
2158 win_stdio_wait_func, chr)) {
2159 fprintf(stderr, "qemu_add_wait_object: failed\n");
2160 }
2161 } else {
2162 DWORD dwId;
2163
2164 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2165 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2166 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
2167 chr, 0, &dwId);
2168
2169 if (stdio->hInputThread == INVALID_HANDLE_VALUE
2170 || stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
2171 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
2172 fprintf(stderr, "cannot create stdio thread or event\n");
2173 exit(1);
2174 }
2175 if (qemu_add_wait_object(stdio->hInputReadyEvent,
2176 win_stdio_thread_wait_func, chr)) {
2177 fprintf(stderr, "qemu_add_wait_object: failed\n");
db418a0a
FC		 2178 }
2179 }
2180
2181 dwMode |= ENABLE_LINE_INPUT;
2182
ed7a1540 2183 if (is_console) {
db418a0a
FC		 2184 /* set the terminal in raw mode */
2185 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2186 dwMode |= ENABLE_PROCESSED_INPUT;
2187 }
2188
2189 SetConsoleMode(stdio->hStdIn, dwMode);
2190
2191 chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
2192 qemu_chr_fe_set_echo(chr, false);
2193
1f51470d 2194 return chr;
db418a0a 2195}
6f97dba0
AL		 2196#endif /* !_WIN32 */
2197
5ab8211b 2198
6f97dba0
AL		 2199/***********************************************************/
2200/* UDP Net console */
2201
2202typedef struct {
2203 int fd;
76a9644b
AL		 2204 GIOChannel *chan;
2205 guint tag;
9bd7854e 2206 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2207 int bufcnt;
2208 int bufptr;
2209 int max_size;
2210} NetCharDriver;
2211
2212static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2213{
2214 NetCharDriver *s = chr->opaque;
76a9644b
AL		 2215 gsize bytes_written;
2216 GIOStatus status;
2217
2218 status = g_io_channel_write_chars(s->chan, (const gchar *)buf, len, &bytes_written, NULL);
2219 if (status == G_IO_STATUS_EOF) {
2220 return 0;
2221 } else if (status != G_IO_STATUS_NORMAL) {
2222 return -1;
2223 }
6f97dba0 2224
76a9644b 2225 return bytes_written;
6f97dba0
AL		 2226}
2227
2228static int udp_chr_read_poll(void *opaque)
2229{
2230 CharDriverState *chr = opaque;
2231 NetCharDriver *s = chr->opaque;
2232
909cda12 2233 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2234
2235 /* If there were any stray characters in the queue process them
2236 * first
2237 */
2238 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
fa5efccb 2239 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
6f97dba0 2240 s->bufptr++;
909cda12 2241 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2242 }
2243 return s->max_size;
2244}
2245
76a9644b 2246static gboolean udp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 2247{
2248 CharDriverState *chr = opaque;
2249 NetCharDriver *s = chr->opaque;
76a9644b
AL		 2250 gsize bytes_read = 0;
2251 GIOStatus status;
6f97dba0
AL		 2252
2253 if (s->max_size == 0)
76a9644b
AL		 2254 return FALSE;
2255 status = g_io_channel_read_chars(s->chan, (gchar *)s->buf, sizeof(s->buf),
2256 &bytes_read, NULL);
2257 s->bufcnt = bytes_read;
6f97dba0 2258 s->bufptr = s->bufcnt;
76a9644b
AL		 2259 if (status != G_IO_STATUS_NORMAL) {
2260 return FALSE;
2261 }
6f97dba0
AL		 2262
2263 s->bufptr = 0;
2264 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
fa5efccb 2265 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
6f97dba0 2266 s->bufptr++;
909cda12 2267 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0 2268 }
76a9644b
AL		 2269
2270 return TRUE;
6f97dba0
AL		 2271}
2272
2273static void udp_chr_update_read_handler(CharDriverState *chr)
2274{
2275 NetCharDriver *s = chr->opaque;
2276
76a9644b
AL		 2277 if (s->tag) {
2278 g_source_remove(s->tag);
2279 s->tag = 0;
2280 }
2281
2282 if (s->chan) {
2283 s->tag = io_add_watch_poll(s->chan, udp_chr_read_poll, udp_chr_read, chr);
6f97dba0
AL		 2284 }
2285}
2286
819f56b7
AL		 2287static void udp_chr_close(CharDriverState *chr)
2288{
2289 NetCharDriver *s = chr->opaque;
76a9644b
AL		 2290 if (s->tag) {
2291 g_source_remove(s->tag);
2292 }
2293 if (s->chan) {
2294 g_io_channel_unref(s->chan);
819f56b7
AL		 2295 closesocket(s->fd);
2296 }
7267c094 2297 g_free(s);
a425d23f 2298 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
819f56b7
AL		 2299}
2300
3ecc059d 2301static CharDriverState *qemu_chr_open_udp_fd(int fd)
6f97dba0
AL		 2302{
2303 CharDriverState *chr = NULL;
2304 NetCharDriver *s = NULL;
6f97dba0 2305
7267c094
AL		 2306 chr = g_malloc0(sizeof(CharDriverState));
2307 s = g_malloc0(sizeof(NetCharDriver));
6f97dba0 2308
6f97dba0 2309 s->fd = fd;
76a9644b 2310 s->chan = io_channel_from_socket(s->fd);
6f97dba0
AL		 2311 s->bufcnt = 0;
2312 s->bufptr = 0;
2313 chr->opaque = s;
2314 chr->chr_write = udp_chr_write;
2315 chr->chr_update_read_handler = udp_chr_update_read_handler;
819f56b7 2316 chr->chr_close = udp_chr_close;
1f51470d 2317 return chr;
3ecc059d 2318}
6f97dba0 2319
3ecc059d
GH		 2320static CharDriverState *qemu_chr_open_udp(QemuOpts *opts)
2321{
2322 Error *local_err = NULL;
2323 int fd = -1;
2324
2325 fd = inet_dgram_opts(opts, &local_err);
2326 if (fd < 0) {
2327 return NULL;
6e1db57b 2328 }
3ecc059d 2329 return qemu_chr_open_udp_fd(fd);
6f97dba0
AL		 2330}
2331
2332/***********************************************************/
2333/* TCP Net console */
2334
2335typedef struct {
2ea5a7af
AL		 2336
2337 GIOChannel *chan, *listen_chan;
2338 guint tag, listen_tag;
6f97dba0
AL		 2339 int fd, listen_fd;
2340 int connected;
2341 int max_size;
2342 int do_telnetopt;
2343 int do_nodelay;
2344 int is_unix;
7d174059 2345 int msgfd;
6f97dba0
AL		 2346} TCPCharDriver;
2347
2ea5a7af 2348static gboolean tcp_chr_accept(GIOChannel *chan, GIOCondition cond, void *opaque);
6f97dba0
AL		 2349
2350static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2351{
2352 TCPCharDriver *s = chr->opaque;
2353 if (s->connected) {
684a096e 2354 return io_channel_send(s->chan, buf, len);
455aa1e0 2355 } else {
6db0fdce 2356 /* XXX: indicate an error ? */
455aa1e0 2357 return len;
6f97dba0
AL		 2358 }
2359}
2360
2361static int tcp_chr_read_poll(void *opaque)
2362{
2363 CharDriverState *chr = opaque;
2364 TCPCharDriver *s = chr->opaque;
2365 if (!s->connected)
2366 return 0;
909cda12 2367 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2368 return s->max_size;
2369}
2370
2371#define IAC 255
2372#define IAC_BREAK 243
2373static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
2374 TCPCharDriver *s,
2375 uint8_t *buf, int *size)
2376{
2377 /* Handle any telnet client's basic IAC options to satisfy char by
2378 * char mode with no echo. All IAC options will be removed from
2379 * the buf and the do_telnetopt variable will be used to track the
2380 * state of the width of the IAC information.
2381 *
2382 * IAC commands come in sets of 3 bytes with the exception of the
2383 * "IAC BREAK" command and the double IAC.
2384 */
2385
2386 int i;
2387 int j = 0;
2388
2389 for (i = 0; i < *size; i++) {
2390 if (s->do_telnetopt > 1) {
2391 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2392 /* Double IAC means send an IAC */
2393 if (j != i)
2394 buf[j] = buf[i];
2395 j++;
2396 s->do_telnetopt = 1;
2397 } else {
2398 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2399 /* Handle IAC break commands by sending a serial break */
a425d23f 2400 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
6f97dba0
AL		 2401 s->do_telnetopt++;
2402 }
2403 s->do_telnetopt++;
2404 }
2405 if (s->do_telnetopt >= 4) {
2406 s->do_telnetopt = 1;
2407 }
2408 } else {
2409 if ((unsigned char)buf[i] == IAC) {
2410 s->do_telnetopt = 2;
2411 } else {
2412 if (j != i)
2413 buf[j] = buf[i];
2414 j++;
2415 }
2416 }
2417 }
2418 *size = j;
2419}
2420
7d174059
MM		 2421static int tcp_get_msgfd(CharDriverState *chr)
2422{
2423 TCPCharDriver *s = chr->opaque;
e53f27b9
PB		 2424 int fd = s->msgfd;
2425 s->msgfd = -1;
2426 return fd;
7d174059
MM		 2427}
2428
73bcc2ac 2429#ifndef _WIN32
7d174059
MM		 2430static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
2431{
2432 TCPCharDriver *s = chr->opaque;
2433 struct cmsghdr *cmsg;
2434
2435 for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
2436 int fd;
2437
2438 if (cmsg->cmsg_len != CMSG_LEN(sizeof(int)) ||
2439 cmsg->cmsg_level != SOL_SOCKET ||
2440 cmsg->cmsg_type != SCM_RIGHTS)
2441 continue;
2442
2443 fd = *((int *)CMSG_DATA(cmsg));
2444 if (fd < 0)
2445 continue;
2446
9b938c72
SH		 2447 /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
2448 qemu_set_block(fd);
2449
06138651
CB		 2450#ifndef MSG_CMSG_CLOEXEC
2451 qemu_set_cloexec(fd);
2452#endif
7d174059
MM		 2453 if (s->msgfd != -1)
2454 close(s->msgfd);
2455 s->msgfd = fd;
2456 }
2457}
2458
9977c894
MM		 2459static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2460{
2461 TCPCharDriver *s = chr->opaque;
7cba04f6 2462 struct msghdr msg = { NULL, };
9977c894 2463 struct iovec iov[1];
7d174059
MM		 2464 union {
2465 struct cmsghdr cmsg;
2466 char control[CMSG_SPACE(sizeof(int))];
2467 } msg_control;
06138651 2468 int flags = 0;
7d174059 2469 ssize_t ret;
9977c894
MM		 2470
2471 iov[0].iov_base = buf;
2472 iov[0].iov_len = len;
2473
2474 msg.msg_iov = iov;
2475 msg.msg_iovlen = 1;
7d174059
MM		 2476 msg.msg_control = &msg_control;
2477 msg.msg_controllen = sizeof(msg_control);
2478
06138651
CB		 2479#ifdef MSG_CMSG_CLOEXEC
2480 flags |= MSG_CMSG_CLOEXEC;
2481#endif
2482 ret = recvmsg(s->fd, &msg, flags);
2483 if (ret > 0 && s->is_unix) {
7d174059 2484 unix_process_msgfd(chr, &msg);
06138651 2485 }
9977c894 2486
7d174059 2487 return ret;
9977c894
MM		 2488}
2489#else
2490static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2491{
2492 TCPCharDriver *s = chr->opaque;
00aa0040 2493 return qemu_recv(s->fd, buf, len, 0);
9977c894
MM		 2494}
2495#endif
2496
d3cc5bc4
AS		 2497static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
2498{
2499 TCPCharDriver *s = chr->opaque;
2500 return g_io_create_watch(s->chan, cond);
2501}
2502
2ea5a7af 2503static gboolean tcp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 2504{
2505 CharDriverState *chr = opaque;
2506 TCPCharDriver *s = chr->opaque;
9bd7854e 2507 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2508 int len, size;
2509
2ea5a7af
AL		 2510 if (!s->connected || s->max_size <= 0) {
2511 return FALSE;
2512 }
6f97dba0
AL		 2513 len = sizeof(buf);
2514 if (len > s->max_size)
2515 len = s->max_size;
9977c894 2516 size = tcp_chr_recv(chr, (void *)buf, len);
6f97dba0
AL		 2517 if (size == 0) {
2518 /* connection closed */
2519 s->connected = 0;
2ea5a7af
AL		 2520 if (s->listen_chan) {
2521 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr);
6f97dba0 2522 }
2ea5a7af
AL		 2523 g_source_remove(s->tag);
2524 s->tag = 0;
2525 g_io_channel_unref(s->chan);
2526 s->chan = NULL;
6f97dba0
AL		 2527 closesocket(s->fd);
2528 s->fd = -1;
a425d23f 2529 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 2530 } else if (size > 0) {
2531 if (s->do_telnetopt)
2532 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2533 if (size > 0)
fa5efccb 2534 qemu_chr_be_write(chr, buf, size);
6f97dba0 2535 }
2ea5a7af
AL		 2536
2537 return TRUE;
6f97dba0
AL		 2538}
2539
68c18d1c
BS		 2540#ifndef _WIN32
2541CharDriverState *qemu_chr_open_eventfd(int eventfd)
2542{
6cbf4c8c 2543 return qemu_chr_open_fd(eventfd, eventfd);
6cbf4c8c 2544}
68c18d1c 2545#endif
6cbf4c8c 2546
6f97dba0
AL		 2547static void tcp_chr_connect(void *opaque)
2548{
2549 CharDriverState *chr = opaque;
2550 TCPCharDriver *s = chr->opaque;
2551
2552 s->connected = 1;
2ea5a7af
AL		 2553 if (s->chan) {
2554 s->tag = io_add_watch_poll(s->chan, tcp_chr_read_poll, tcp_chr_read, chr);
bbdd2ad0 2555 }
fee204fd 2556 qemu_chr_be_generic_open(chr);
6f97dba0
AL		 2557}
2558
2559#define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
2560static void tcp_chr_telnet_init(int fd)
2561{
2562 char buf[3];
2563 /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
2564 IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2565 send(fd, (char *)buf, 3, 0);
2566 IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2567 send(fd, (char *)buf, 3, 0);
2568 IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2569 send(fd, (char *)buf, 3, 0);
2570 IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2571 send(fd, (char *)buf, 3, 0);
2572}
2573
13661089
DB		 2574static int tcp_chr_add_client(CharDriverState *chr, int fd)
2575{
2576 TCPCharDriver *s = chr->opaque;
2577 if (s->fd != -1)
2578 return -1;
2579
f9e8cacc 2580 qemu_set_nonblock(fd);
13661089
DB		 2581 if (s->do_nodelay)
2582 socket_set_nodelay(fd);
2583 s->fd = fd;
2ea5a7af
AL		 2584 s->chan = io_channel_from_socket(fd);
2585 g_source_remove(s->listen_tag);
2586 s->listen_tag = 0;
13661089
DB		 2587 tcp_chr_connect(chr);
2588
2589 return 0;
2590}
2591
2ea5a7af 2592static gboolean tcp_chr_accept(GIOChannel *channel, GIOCondition cond, void *opaque)
6f97dba0
AL		 2593{
2594 CharDriverState *chr = opaque;
2595 TCPCharDriver *s = chr->opaque;
2596 struct sockaddr_in saddr;
2597#ifndef _WIN32
2598 struct sockaddr_un uaddr;
2599#endif
2600 struct sockaddr *addr;
2601 socklen_t len;
2602 int fd;
2603
2604 for(;;) {
2605#ifndef _WIN32
2606 if (s->is_unix) {
2607 len = sizeof(uaddr);
2608 addr = (struct sockaddr *)&uaddr;
2609 } else
2610#endif
2611 {
2612 len = sizeof(saddr);
2613 addr = (struct sockaddr *)&saddr;
2614 }
40ff6d7e 2615 fd = qemu_accept(s->listen_fd, addr, &len);
6f97dba0 2616 if (fd < 0 && errno != EINTR) {
2ea5a7af 2617 return FALSE;
6f97dba0
AL		 2618 } else if (fd >= 0) {
2619 if (s->do_telnetopt)
2620 tcp_chr_telnet_init(fd);
2621 break;
2622 }
2623 }
13661089
DB		 2624 if (tcp_chr_add_client(chr, fd) < 0)
2625 close(fd);
2ea5a7af
AL		 2626
2627 return TRUE;
6f97dba0
AL		 2628}
2629
2630static void tcp_chr_close(CharDriverState *chr)
2631{
2632 TCPCharDriver *s = chr->opaque;
819f56b7 2633 if (s->fd >= 0) {
2ea5a7af
AL		 2634 if (s->tag) {
2635 g_source_remove(s->tag);
2636 }
2637 if (s->chan) {
2638 g_io_channel_unref(s->chan);
2639 }
6f97dba0 2640 closesocket(s->fd);
819f56b7
AL		 2641 }
2642 if (s->listen_fd >= 0) {
2ea5a7af
AL		 2643 if (s->listen_tag) {
2644 g_source_remove(s->listen_tag);
2645 }
2646 if (s->listen_chan) {
2647 g_io_channel_unref(s->listen_chan);
2648 }
6f97dba0 2649 closesocket(s->listen_fd);
819f56b7 2650 }
7267c094 2651 g_free(s);
a425d23f 2652 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 2653}
2654
f6bd5d6e
GH		 2655static CharDriverState *qemu_chr_open_socket_fd(int fd, bool do_nodelay,
2656 bool is_listen, bool is_telnet,
2657 bool is_waitconnect,
2658 Error **errp)
6f97dba0
AL		 2659{
2660 CharDriverState *chr = NULL;
2661 TCPCharDriver *s = NULL;
f6bd5d6e
GH		 2662 char host[NI_MAXHOST], serv[NI_MAXSERV];
2663 const char *left = "", *right = "";
2664 struct sockaddr_storage ss;
2665 socklen_t ss_len = sizeof(ss);
2666
2667 memset(&ss, 0, ss_len);
2668 if (getsockname(fd, (struct sockaddr *) &ss, &ss_len) != 0) {
2669 error_setg(errp, "getsockname: %s", strerror(errno));
2670 return NULL;
2671 }
2672
2673 chr = g_malloc0(sizeof(CharDriverState));
2674 s = g_malloc0(sizeof(TCPCharDriver));
2675
2676 s->connected = 0;
2677 s->fd = -1;
2678 s->listen_fd = -1;
2679 s->msgfd = -1;
2680
2681 chr->filename = g_malloc(256);
2682 switch (ss.ss_family) {
2683#ifndef _WIN32
2684 case AF_UNIX:
2685 s->is_unix = 1;
2686 snprintf(chr->filename, 256, "unix:%s%s",
2687 ((struct sockaddr_un *)(&ss))->sun_path,
2688 is_listen ? ",server" : "");
2689 break;
2690#endif
2691 case AF_INET6:
2692 left = "[";
2693 right = "]";
2694 /* fall through */
2695 case AF_INET:
2696 s->do_nodelay = do_nodelay;
2697 getnameinfo((struct sockaddr *) &ss, ss_len, host, sizeof(host),
2698 serv, sizeof(serv), NI_NUMERICHOST | NI_NUMERICSERV);
e5545854 2699 snprintf(chr->filename, 256, "%s:%s%s%s:%s%s",
f6bd5d6e
GH		 2700 is_telnet ? "telnet" : "tcp",
2701 left, host, right, serv,
2702 is_listen ? ",server" : "");
2703 break;
2704 }
2705
2706 chr->opaque = s;
2707 chr->chr_write = tcp_chr_write;
2708 chr->chr_close = tcp_chr_close;
2709 chr->get_msgfd = tcp_get_msgfd;
2710 chr->chr_add_client = tcp_chr_add_client;
d3cc5bc4 2711 chr->chr_add_watch = tcp_chr_add_watch;
f6bd5d6e
GH		 2712
2713 if (is_listen) {
2714 s->listen_fd = fd;
2ea5a7af
AL		 2715 s->listen_chan = io_channel_from_socket(s->listen_fd);
2716 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr);
f6bd5d6e
GH		 2717 if (is_telnet) {
2718 s->do_telnetopt = 1;
2719 }
2720 } else {
2721 s->connected = 1;
2722 s->fd = fd;
2723 socket_set_nodelay(fd);
2ea5a7af 2724 s->chan = io_channel_from_socket(s->fd);
f6bd5d6e
GH		 2725 tcp_chr_connect(chr);
2726 }
2727
2728 if (is_listen && is_waitconnect) {
2729 printf("QEMU waiting for connection on: %s\n",
2730 chr->filename);
2ea5a7af 2731 tcp_chr_accept(s->listen_chan, G_IO_IN, chr);
f9e8cacc 2732 qemu_set_nonblock(s->listen_fd);
f6bd5d6e
GH		 2733 }
2734 return chr;
2735}
2736
2737static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
2738{
2739 CharDriverState *chr = NULL;
87d5f24f 2740 Error *local_err = NULL;
aeb2c47a
GH		 2741 int fd = -1;
2742 int is_listen;
2743 int is_waitconnect;
2744 int do_nodelay;
2745 int is_unix;
2746 int is_telnet;
2747
2748 is_listen = qemu_opt_get_bool(opts, "server", 0);
2749 is_waitconnect = qemu_opt_get_bool(opts, "wait", 1);
2750 is_telnet = qemu_opt_get_bool(opts, "telnet", 0);
2751 do_nodelay = !qemu_opt_get_bool(opts, "delay", 1);
2752 is_unix = qemu_opt_get(opts, "path") != NULL;
6f97dba0
AL		 2753 if (!is_listen)
2754 is_waitconnect = 0;
2755
f07b6003
AL		 2756 if (is_unix) {
2757 if (is_listen) {
87d5f24f 2758 fd = unix_listen_opts(opts, &local_err);
f07b6003 2759 } else {
87d5f24f 2760 fd = unix_connect_opts(opts, &local_err, NULL, NULL);
f07b6003
AL		 2761 }
2762 } else {
2763 if (is_listen) {
87d5f24f 2764 fd = inet_listen_opts(opts, 0, &local_err);
f07b6003 2765 } else {
87d5f24f 2766 fd = inet_connect_opts(opts, &local_err, NULL, NULL);
f07b6003
AL		 2767 }
2768 }
a89dd6c3 2769 if (fd < 0) {
6f97dba0 2770 goto fail;
a89dd6c3 2771 }
6f97dba0
AL		 2772
2773 if (!is_waitconnect)
f9e8cacc 2774 qemu_set_nonblock(fd);
6f97dba0 2775
f6bd5d6e
GH		 2776 chr = qemu_chr_open_socket_fd(fd, do_nodelay, is_listen, is_telnet,
2777 is_waitconnect, &local_err);
2778 if (error_is_set(&local_err)) {
2779 goto fail;
6f97dba0 2780 }
1f51470d 2781 return chr;
aeb2c47a 2782
f6bd5d6e 2783
6f97dba0 2784 fail:
87d5f24f
PB		 2785 if (local_err) {
2786 qerror_report_err(local_err);
2787 error_free(local_err);
2788 }
2789 if (fd >= 0) {
6f97dba0 2790 closesocket(fd);
87d5f24f 2791 }
f6bd5d6e
GH		 2792 if (chr) {
2793 g_free(chr->opaque);
2794 g_free(chr);
2795 }
1f51470d 2796 return NULL;
6f97dba0
AL		 2797}
2798
51767e7c 2799/*********************************************************/
3949e594 2800/* Ring buffer chardev */
51767e7c
LL		 2801
2802typedef struct {
2803 size_t size;
2804 size_t prod;
2805 size_t cons;
2806 uint8_t *cbuf;
3949e594 2807} RingBufCharDriver;
51767e7c 2808
3949e594 2809static size_t ringbuf_count(const CharDriverState *chr)
51767e7c 2810{
3949e594 2811 const RingBufCharDriver *d = chr->opaque;
51767e7c 2812
5c230105 2813 return d->prod - d->cons;
51767e7c
LL		 2814}
2815
3949e594 2816static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
51767e7c 2817{
3949e594 2818 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 2819 int i;
2820
2821 if (!buf || (len < 0)) {
2822 return -1;
2823 }
2824
2825 for (i = 0; i < len; i++ ) {
5c230105
MA		 2826 d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
2827 if (d->prod - d->cons > d->size) {
51767e7c
LL		 2828 d->cons = d->prod - d->size;
2829 }
2830 }
2831
2832 return 0;
2833}
2834
3949e594 2835static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len)
51767e7c 2836{
3949e594 2837 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 2838 int i;
2839
5c230105
MA		 2840 for (i = 0; i < len && d->cons != d->prod; i++) {
2841 buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
51767e7c
LL		 2842 }
2843
2844 return i;
2845}
2846
3949e594 2847static void ringbuf_chr_close(struct CharDriverState *chr)
51767e7c 2848{
3949e594 2849 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 2850
2851 g_free(d->cbuf);
2852 g_free(d);
2853 chr->opaque = NULL;
2854}
2855
1da48c65
GH		 2856static CharDriverState *qemu_chr_open_ringbuf(ChardevRingbuf *opts,
2857 Error **errp)
51767e7c
LL		 2858{
2859 CharDriverState *chr;
3949e594 2860 RingBufCharDriver *d;
51767e7c
LL		 2861
2862 chr = g_malloc0(sizeof(CharDriverState));
2863 d = g_malloc(sizeof(*d));
2864
1da48c65 2865 d->size = opts->has_size ? opts->size : 65536;
51767e7c
LL		 2866
2867 /* The size must be power of 2 */
2868 if (d->size & (d->size - 1)) {
1da48c65 2869 error_setg(errp, "size of ringbuf chardev must be power of two");
51767e7c
LL		 2870 goto fail;
2871 }
2872
2873 d->prod = 0;
2874 d->cons = 0;
2875 d->cbuf = g_malloc0(d->size);
2876
2877 chr->opaque = d;
3949e594
MA		 2878 chr->chr_write = ringbuf_chr_write;
2879 chr->chr_close = ringbuf_chr_close;
51767e7c
LL		 2880
2881 return chr;
2882
2883fail:
2884 g_free(d);
2885 g_free(chr);
2886 return NULL;
2887}
2888
3949e594 2889static bool chr_is_ringbuf(const CharDriverState *chr)
1f590cf9 2890{
3949e594 2891 return chr->chr_write == ringbuf_chr_write;
1f590cf9
LL		 2892}
2893
3949e594 2894void qmp_ringbuf_write(const char *device, const char *data,
82e59a67 2895 bool has_format, enum DataFormat format,
1f590cf9
LL		 2896 Error **errp)
2897{
2898 CharDriverState *chr;
c4f331b6 2899 const uint8_t *write_data;
1f590cf9 2900 int ret;
c4f331b6 2901 size_t write_count;
1f590cf9
LL		 2902
2903 chr = qemu_chr_find(device);
2904 if (!chr) {
1a69278e 2905 error_setg(errp, "Device '%s' not found", device);
1f590cf9
LL		 2906 return;
2907 }
2908
3949e594
MA		 2909 if (!chr_is_ringbuf(chr)) {
2910 error_setg(errp,"%s is not a ringbuf device", device);
1f590cf9
LL		 2911 return;
2912 }
2913
1f590cf9
LL		 2914 if (has_format && (format == DATA_FORMAT_BASE64)) {
2915 write_data = g_base64_decode(data, &write_count);
2916 } else {
2917 write_data = (uint8_t *)data;
82e59a67 2918 write_count = strlen(data);
1f590cf9
LL		 2919 }
2920
3949e594 2921 ret = ringbuf_chr_write(chr, write_data, write_count);
1f590cf9 2922
13289fb5
MA		 2923 if (write_data != (uint8_t *)data) {
2924 g_free((void *)write_data);
2925 }
2926
1f590cf9
LL		 2927 if (ret < 0) {
2928 error_setg(errp, "Failed to write to device %s", device);
2929 return;
2930 }
2931}
2932
3949e594 2933char *qmp_ringbuf_read(const char *device, int64_t size,
3ab651fc
MA		 2934 bool has_format, enum DataFormat format,
2935 Error **errp)
49b6d722
LL		 2936{
2937 CharDriverState *chr;
c4f331b6 2938 uint8_t *read_data;
49b6d722 2939 size_t count;
3ab651fc 2940 char *data;
49b6d722
LL		 2941
2942 chr = qemu_chr_find(device);
2943 if (!chr) {
1a69278e 2944 error_setg(errp, "Device '%s' not found", device);
49b6d722
LL		 2945 return NULL;
2946 }
2947
3949e594
MA		 2948 if (!chr_is_ringbuf(chr)) {
2949 error_setg(errp,"%s is not a ringbuf device", device);
49b6d722
LL		 2950 return NULL;
2951 }
2952
2953 if (size <= 0) {
2954 error_setg(errp, "size must be greater than zero");
2955 return NULL;
2956 }
2957
3949e594 2958 count = ringbuf_count(chr);
49b6d722 2959 size = size > count ? count : size;
44f3bcd2 2960 read_data = g_malloc(size + 1);
49b6d722 2961
3949e594 2962 ringbuf_chr_read(chr, read_data, size);
49b6d722
LL		 2963
2964 if (has_format && (format == DATA_FORMAT_BASE64)) {
3ab651fc 2965 data = g_base64_encode(read_data, size);
13289fb5 2966 g_free(read_data);
49b6d722 2967 } else {
3949e594
MA		 2968 /*
2969 * FIXME should read only complete, valid UTF-8 characters up
2970 * to @size bytes. Invalid sequences should be replaced by a
2971 * suitable replacement character. Except when (and only
2972 * when) ring buffer lost characters since last read, initial
2973 * continuation characters should be dropped.
2974 */
44f3bcd2 2975 read_data[size] = 0;
3ab651fc 2976 data = (char *)read_data;
49b6d722
LL		 2977 }
2978
3ab651fc 2979 return data;
49b6d722
LL		 2980}
2981
33521634 2982QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
191bc01b 2983{
6ea314d9 2984 char host[65], port[33], width[8], height[8];
aeb2c47a 2985 int pos;
7d31544f 2986 const char *p;
191bc01b 2987 QemuOpts *opts;
8be7e7e4 2988 Error *local_err = NULL;
191bc01b 2989
8be7e7e4
LC		 2990 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
2991 if (error_is_set(&local_err)) {
2992 qerror_report_err(local_err);
2993 error_free(local_err);
191bc01b 2994 return NULL;
8be7e7e4 2995 }
191bc01b 2996
7591c5c1
GH		 2997 if (strstart(filename, "mon:", &p)) {
2998 filename = p;
2999 qemu_opt_set(opts, "mux", "on");
3000 }
3001
f0457e8d
GH		 3002 if (strcmp(filename, "null") == 0 ||
3003 strcmp(filename, "pty") == 0 ||
3004 strcmp(filename, "msmouse") == 0 ||
dc1c21e6 3005 strcmp(filename, "braille") == 0 ||
f0457e8d 3006 strcmp(filename, "stdio") == 0) {
4490dadf 3007 qemu_opt_set(opts, "backend", filename);
191bc01b
GH		 3008 return opts;
3009 }
6ea314d9
GH		 3010 if (strstart(filename, "vc", &p)) {
3011 qemu_opt_set(opts, "backend", "vc");
3012 if (*p == ':') {
3013 if (sscanf(p+1, "%8[0-9]x%8[0-9]", width, height) == 2) {
3014 /* pixels */
3015 qemu_opt_set(opts, "width", width);
3016 qemu_opt_set(opts, "height", height);
3017 } else if (sscanf(p+1, "%8[0-9]Cx%8[0-9]C", width, height) == 2) {
3018 /* chars */
3019 qemu_opt_set(opts, "cols", width);
3020 qemu_opt_set(opts, "rows", height);
3021 } else {
3022 goto fail;
3023 }
3024 }
3025 return opts;
3026 }
d6c983cd
GH		 3027 if (strcmp(filename, "con:") == 0) {
3028 qemu_opt_set(opts, "backend", "console");
3029 return opts;
3030 }
48b76496
GH		 3031 if (strstart(filename, "COM", NULL)) {
3032 qemu_opt_set(opts, "backend", "serial");
3033 qemu_opt_set(opts, "path", filename);
3034 return opts;
3035 }
7d31544f
GH		 3036 if (strstart(filename, "file:", &p)) {
3037 qemu_opt_set(opts, "backend", "file");
3038 qemu_opt_set(opts, "path", p);
3039 return opts;
3040 }
3041 if (strstart(filename, "pipe:", &p)) {
3042 qemu_opt_set(opts, "backend", "pipe");
3043 qemu_opt_set(opts, "path", p);
3044 return opts;
3045 }
aeb2c47a
GH		 3046 if (strstart(filename, "tcp:", &p) ||
3047 strstart(filename, "telnet:", &p)) {
3048 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3049 host[0] = 0;
3050 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
3051 goto fail;
3052 }
3053 qemu_opt_set(opts, "backend", "socket");
3054 qemu_opt_set(opts, "host", host);
3055 qemu_opt_set(opts, "port", port);
3056 if (p[pos] == ',') {
3057 if (qemu_opts_do_parse(opts, p+pos+1, NULL) != 0)
3058 goto fail;
3059 }
3060 if (strstart(filename, "telnet:", &p))
3061 qemu_opt_set(opts, "telnet", "on");
3062 return opts;
3063 }
7e1b35b4
GH		 3064 if (strstart(filename, "udp:", &p)) {
3065 qemu_opt_set(opts, "backend", "udp");
3066 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
3067 host[0] = 0;
39324ca4 3068 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
7e1b35b4
GH		 3069 goto fail;
3070 }
3071 }
3072 qemu_opt_set(opts, "host", host);
3073 qemu_opt_set(opts, "port", port);
3074 if (p[pos] == '@') {
3075 p += pos + 1;
3076 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3077 host[0] = 0;
3078 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
7e1b35b4
GH		 3079 goto fail;
3080 }
3081 }
3082 qemu_opt_set(opts, "localaddr", host);
3083 qemu_opt_set(opts, "localport", port);
3084 }
3085 return opts;
3086 }
aeb2c47a
GH		 3087 if (strstart(filename, "unix:", &p)) {
3088 qemu_opt_set(opts, "backend", "socket");
3089 if (qemu_opts_do_parse(opts, p, "path") != 0)
3090 goto fail;
3091 return opts;
3092 }
48b76496
GH		 3093 if (strstart(filename, "/dev/parport", NULL) ||
3094 strstart(filename, "/dev/ppi", NULL)) {
3095 qemu_opt_set(opts, "backend", "parport");
3096 qemu_opt_set(opts, "path", filename);
3097 return opts;
3098 }
3099 if (strstart(filename, "/dev/", NULL)) {
3100 qemu_opt_set(opts, "backend", "tty");
3101 qemu_opt_set(opts, "path", filename);
3102 return opts;
3103 }
191bc01b 3104
aeb2c47a 3105fail:
191bc01b
GH		 3106 qemu_opts_del(opts);
3107 return NULL;
3108}
3109
846e2e49
GH		 3110static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
3111 Error **errp)
3112{
3113 const char *path = qemu_opt_get(opts, "path");
3114
3115 if (path == NULL) {
3116 error_setg(errp, "chardev: file: no filename given");
3117 return;
3118 }
3119 backend->file = g_new0(ChardevFile, 1);
3120 backend->file->out = g_strdup(path);
3121}
3122
7c358031
GH		 3123static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
3124 Error **errp)
3125{
3126 backend->stdio = g_new0(ChardevStdio, 1);
3127 backend->stdio->has_signal = true;
3128 backend->stdio->signal =
3129 qemu_opt_get_bool(opts, "signal", display_type != DT_NOGRAPHIC);
3130}
3131
0f1cb51d
GH		 3132static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
3133 Error **errp)
3134{
3135 const char *device = qemu_opt_get(opts, "path");
3136
3137 if (device == NULL) {
3138 error_setg(errp, "chardev: serial/tty: no device path given");
3139 return;
3140 }
3141 backend->serial = g_new0(ChardevHostdev, 1);
3142 backend->serial->device = g_strdup(device);
3143}
3144
dc375097
GH		 3145static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
3146 Error **errp)
3147{
3148 const char *device = qemu_opt_get(opts, "path");
3149
3150 if (device == NULL) {
3151 error_setg(errp, "chardev: parallel: no device path given");
3152 return;
3153 }
3154 backend->parallel = g_new0(ChardevHostdev, 1);
3155 backend->parallel->device = g_strdup(device);
3156}
3157
548cbb36
GH		 3158static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
3159 Error **errp)
3160{
3161 const char *device = qemu_opt_get(opts, "path");
3162
3163 if (device == NULL) {
3164 error_setg(errp, "chardev: pipe: no device path given");
3165 return;
3166 }
3167 backend->pipe = g_new0(ChardevHostdev, 1);
3168 backend->pipe->device = g_strdup(device);
3169}
3170
1da48c65
GH		 3171static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
3172 Error **errp)
3173{
3174 int val;
3175
3176 backend->memory = g_new0(ChardevRingbuf, 1);
3177
3178 val = qemu_opt_get_number(opts, "size", 0);
3179 if (val != 0) {
3180 backend->memory->has_size = true;
3181 backend->memory->size = val;
3182 }
3183}
3184
d654f34e 3185typedef struct CharDriver {
191bc01b 3186 const char *name;
2c5f4882 3187 /* old, pre qapi */
1f51470d 3188 CharDriverState *(*open)(QemuOpts *opts);
2c5f4882
GH		 3189 /* new, qapi-based */
3190 int kind;
3191 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
d654f34e
AL		 3192} CharDriver;
3193
3194static GSList *backends;
3195
3196void register_char_driver(const char *name, CharDriverState *(*open)(QemuOpts *))
3197{
3198 CharDriver *s;
3199
3200 s = g_malloc0(sizeof(*s));
3201 s->name = g_strdup(name);
3202 s->open = open;
3203
3204 backends = g_slist_append(backends, s);
3205}
191bc01b 3206
2c5f4882
GH		 3207void register_char_driver_qapi(const char *name, int kind,
3208 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp))
3209{
3210 CharDriver *s;
3211
3212 s = g_malloc0(sizeof(*s));
3213 s->name = g_strdup(name);
3214 s->kind = kind;
3215 s->parse = parse;
3216
3217 backends = g_slist_append(backends, s);
3218}
3219
f69554b9 3220CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
bd2d80b2
GH		 3221 void (*init)(struct CharDriverState *s),
3222 Error **errp)
191bc01b 3223{
d654f34e 3224 CharDriver *cd;
191bc01b 3225 CharDriverState *chr;
d654f34e 3226 GSList *i;
191bc01b
GH		 3227
3228 if (qemu_opts_id(opts) == NULL) {
312fd5f2 3229 error_setg(errp, "chardev: no id specified");
2274ae9d 3230 goto err;
191bc01b
GH		 3231 }
3232
1bbd185f 3233 if (qemu_opt_get(opts, "backend") == NULL) {
312fd5f2 3234 error_setg(errp, "chardev: \"%s\" missing backend",
bd2d80b2 3235 qemu_opts_id(opts));
2274ae9d 3236 goto err;
1bbd185f 3237 }
d654f34e
AL		 3238 for (i = backends; i; i = i->next) {
3239 cd = i->data;
3240
3241 if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) {
191bc01b 3242 break;
d654f34e 3243 }
191bc01b 3244 }
d654f34e 3245 if (i == NULL) {
312fd5f2 3246 error_setg(errp, "chardev: backend \"%s\" not found",
bd2d80b2 3247 qemu_opt_get(opts, "backend"));
d654f34e 3248 return NULL;
191bc01b
GH		 3249 }
3250
2c5f4882
GH		 3251 if (!cd->open) {
3252 /* using new, qapi init */
3253 ChardevBackend *backend = g_new0(ChardevBackend, 1);
3254 ChardevReturn *ret = NULL;
3255 const char *id = qemu_opts_id(opts);
edb2fb3c
GH		 3256 const char *bid = NULL;
3257
3258 if (qemu_opt_get_bool(opts, "mux", 0)) {
3259 bid = g_strdup_printf("%s-base", id);
3260 }
2c5f4882
GH		 3261
3262 chr = NULL;
3263 backend->kind = cd->kind;
3264 if (cd->parse) {
3265 cd->parse(opts, backend, errp);
3266 if (error_is_set(errp)) {
3267 goto qapi_out;
3268 }
3269 }
edb2fb3c 3270 ret = qmp_chardev_add(bid ? bid : id, backend, errp);
2c5f4882
GH		 3271 if (error_is_set(errp)) {
3272 goto qapi_out;
3273 }
edb2fb3c
GH		 3274
3275 if (bid) {
3276 qapi_free_ChardevBackend(backend);
3277 qapi_free_ChardevReturn(ret);
3278 backend = g_new0(ChardevBackend, 1);
3279 backend->mux = g_new0(ChardevMux, 1);
3280 backend->kind = CHARDEV_BACKEND_KIND_MUX;
3281 backend->mux->chardev = g_strdup(bid);
3282 ret = qmp_chardev_add(id, backend, errp);
3283 if (error_is_set(errp)) {
3284 goto qapi_out;
3285 }
3286 }
3287
2c5f4882
GH		 3288 chr = qemu_chr_find(id);
3289
3290 qapi_out:
3291 qapi_free_ChardevBackend(backend);
3292 qapi_free_ChardevReturn(ret);
3293 return chr;
3294 }
3295
d654f34e 3296 chr = cd->open(opts);
1f51470d 3297 if (!chr) {
312fd5f2 3298 error_setg(errp, "chardev: opening backend \"%s\" failed",
bd2d80b2 3299 qemu_opt_get(opts, "backend"));
2274ae9d 3300 goto err;
191bc01b
GH		 3301 }
3302
3303 if (!chr->filename)
7267c094 3304 chr->filename = g_strdup(qemu_opt_get(opts, "backend"));
191bc01b 3305 chr->init = init;
72cf2d4f 3306 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
7591c5c1
GH		 3307
3308 if (qemu_opt_get_bool(opts, "mux", 0)) {
3309 CharDriverState *base = chr;
3310 int len = strlen(qemu_opts_id(opts)) + 6;
7267c094 3311 base->label = g_malloc(len);
7591c5c1
GH		 3312 snprintf(base->label, len, "%s-base", qemu_opts_id(opts));
3313 chr = qemu_chr_open_mux(base);
3314 chr->filename = base->filename;
d5b27167 3315 chr->avail_connections = MAX_MUX;
72cf2d4f 3316 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
d5b27167
KK		 3317 } else {
3318 chr->avail_connections = 1;
7591c5c1 3319 }
7267c094 3320 chr->label = g_strdup(qemu_opts_id(opts));
2274ae9d 3321 chr->opts = opts;
191bc01b 3322 return chr;
2274ae9d
GH		 3323
3324err:
3325 qemu_opts_del(opts);
3326 return NULL;
191bc01b
GH		 3327}
3328
27143a44 3329CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
6f97dba0
AL		 3330{
3331 const char *p;
3332 CharDriverState *chr;
191bc01b 3333 QemuOpts *opts;
bd2d80b2 3334 Error *err = NULL;
191bc01b 3335
c845f401
GH		 3336 if (strstart(filename, "chardev:", &p)) {
3337 return qemu_chr_find(p);
3338 }
3339
191bc01b 3340 opts = qemu_chr_parse_compat(label, filename);
7e1b35b4
GH		 3341 if (!opts)
3342 return NULL;
6f97dba0 3343
bd2d80b2
GH		 3344 chr = qemu_chr_new_from_opts(opts, init, &err);
3345 if (error_is_set(&err)) {
3346 fprintf(stderr, "%s\n", error_get_pretty(err));
3347 error_free(err);
3348 }
7e1b35b4 3349 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
456d6069 3350 qemu_chr_fe_claim_no_fail(chr);
7e1b35b4 3351 monitor_init(chr, MONITOR_USE_READLINE);
6f97dba0
AL		 3352 }
3353 return chr;
3354}
3355
15f31519 3356void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo)
c48855e1
PB		 3357{
3358 if (chr->chr_set_echo) {
3359 chr->chr_set_echo(chr, echo);
3360 }
3361}
3362
8e25daa8 3363void qemu_chr_fe_set_open(struct CharDriverState *chr, int fe_open)
7c32c4fe 3364{
8e25daa8 3365 if (chr->fe_open == fe_open) {
c0c4bd2c
HG		 3366 return;
3367 }
8e25daa8 3368 chr->fe_open = fe_open;
574b711a
HG		 3369 if (chr->chr_set_fe_open) {
3370 chr->chr_set_fe_open(chr, fe_open);
7c32c4fe
HG		 3371 }
3372}
3373
2c8a5942
KW		 3374int qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond,
3375 GIOFunc func, void *user_data)
23673ca7
AL		 3376{
3377 GSource *src;
3378 guint tag;
3379
3380 if (s->chr_add_watch == NULL) {
3381 return -ENOSYS;
3382 }
3383
3384 src = s->chr_add_watch(s, cond);
3385 g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
3386 tag = g_source_attach(src, NULL);
3387 g_source_unref(src);
3388
3389 return tag;
3390}
3391
44c473de
HG		 3392int qemu_chr_fe_claim(CharDriverState *s)
3393{
3394 if (s->avail_connections < 1) {
3395 return -1;
3396 }
3397 s->avail_connections--;
3398 return 0;
3399}
3400
3401void qemu_chr_fe_claim_no_fail(CharDriverState *s)
3402{
3403 if (qemu_chr_fe_claim(s) != 0) {
3404 fprintf(stderr, "%s: error chardev \"%s\" already used\n",
3405 __func__, s->label);
3406 exit(1);
3407 }
3408}
3409
3410void qemu_chr_fe_release(CharDriverState *s)
3411{
3412 s->avail_connections++;
3413}
3414
70f24fb6 3415void qemu_chr_delete(CharDriverState *chr)
6f97dba0 3416{
72cf2d4f 3417 QTAILQ_REMOVE(&chardevs, chr, next);
2274ae9d 3418 if (chr->chr_close) {
6f97dba0 3419 chr->chr_close(chr);
2274ae9d 3420 }
7267c094
AL		 3421 g_free(chr->filename);
3422 g_free(chr->label);
2274ae9d
GH		 3423 if (chr->opts) {
3424 qemu_opts_del(chr->opts);
3425 }
7267c094 3426 g_free(chr);
6f97dba0
AL		 3427}
3428
c5a415a0 3429ChardevInfoList *qmp_query_chardev(Error **errp)
6f97dba0 3430{
c5a415a0 3431 ChardevInfoList *chr_list = NULL;
6f97dba0
AL		 3432 CharDriverState *chr;
3433
72cf2d4f 3434 QTAILQ_FOREACH(chr, &chardevs, next) {
c5a415a0
LC		 3435 ChardevInfoList *info = g_malloc0(sizeof(*info));
3436 info->value = g_malloc0(sizeof(*info->value));
3437 info->value->label = g_strdup(chr->label);
3438 info->value->filename = g_strdup(chr->filename);
3439
3440 info->next = chr_list;
3441 chr_list = info;
6f97dba0 3442 }
588b3832 3443
c5a415a0 3444 return chr_list;
6f97dba0 3445}
c845f401
GH		 3446
3447CharDriverState *qemu_chr_find(const char *name)
3448{
3449 CharDriverState *chr;
3450
72cf2d4f 3451 QTAILQ_FOREACH(chr, &chardevs, next) {
c845f401
GH		 3452 if (strcmp(chr->label, name) != 0)
3453 continue;
3454 return chr;
3455 }
3456 return NULL;
3457}
0beb4942
AL		 3458
3459/* Get a character (serial) device interface. */
3460CharDriverState *qemu_char_get_next_serial(void)
3461{
3462 static int next_serial;
456d6069 3463 CharDriverState *chr;
0beb4942
AL		 3464
3465 /* FIXME: This function needs to go away: use chardev properties! */
456d6069
HG		 3466
3467 while (next_serial < MAX_SERIAL_PORTS && serial_hds[next_serial]) {
3468 chr = serial_hds[next_serial++];
3469 qemu_chr_fe_claim_no_fail(chr);
3470 return chr;
3471 }
3472 return NULL;
0beb4942
AL		 3473}
3474
4d454574
PB		 3475QemuOptsList qemu_chardev_opts = {
3476 .name = "chardev",
3477 .implied_opt_name = "backend",
3478 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
3479 .desc = {
3480 {
3481 .name = "backend",
3482 .type = QEMU_OPT_STRING,
3483 },{
3484 .name = "path",
3485 .type = QEMU_OPT_STRING,
3486 },{
3487 .name = "host",
3488 .type = QEMU_OPT_STRING,
3489 },{
3490 .name = "port",
3491 .type = QEMU_OPT_STRING,
3492 },{
3493 .name = "localaddr",
3494 .type = QEMU_OPT_STRING,
3495 },{
3496 .name = "localport",
3497 .type = QEMU_OPT_STRING,
3498 },{
3499 .name = "to",
3500 .type = QEMU_OPT_NUMBER,
3501 },{
3502 .name = "ipv4",
3503 .type = QEMU_OPT_BOOL,
3504 },{
3505 .name = "ipv6",
3506 .type = QEMU_OPT_BOOL,
3507 },{
3508 .name = "wait",
3509 .type = QEMU_OPT_BOOL,
3510 },{
3511 .name = "server",
3512 .type = QEMU_OPT_BOOL,
3513 },{
3514 .name = "delay",
3515 .type = QEMU_OPT_BOOL,
3516 },{
3517 .name = "telnet",
3518 .type = QEMU_OPT_BOOL,
3519 },{
3520 .name = "width",
3521 .type = QEMU_OPT_NUMBER,
3522 },{
3523 .name = "height",
3524 .type = QEMU_OPT_NUMBER,
3525 },{
3526 .name = "cols",
3527 .type = QEMU_OPT_NUMBER,
3528 },{
3529 .name = "rows",
3530 .type = QEMU_OPT_NUMBER,
3531 },{
3532 .name = "mux",
3533 .type = QEMU_OPT_BOOL,
3534 },{
3535 .name = "signal",
3536 .type = QEMU_OPT_BOOL,
3537 },{
3538 .name = "name",
3539 .type = QEMU_OPT_STRING,
3540 },{
3541 .name = "debug",
3542 .type = QEMU_OPT_NUMBER,
51767e7c 3543 },{
3949e594 3544 .name = "size",
de1cc36e 3545 .type = QEMU_OPT_SIZE,
4d454574
PB		 3546 },
3547 { /* end of list */ }
3548 },
3549};
f1a1a356 3550
ffbdbe59
GH		 3551#ifdef _WIN32
3552
3553static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
3554{
3555 HANDLE out;
3556
3557 if (file->in) {
3558 error_setg(errp, "input file not supported");
3559 return NULL;
3560 }
3561
3562 out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
3563 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
3564 if (out == INVALID_HANDLE_VALUE) {
3565 error_setg(errp, "open %s failed", file->out);
3566 return NULL;
3567 }
3568 return qemu_chr_open_win_file(out);
3569}
3570
d36b2b90
MA		 3571static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
3572 Error **errp)
d59044ef 3573{
d36b2b90
MA		 3574 return qemu_chr_open_win_path(serial->device);
3575}
3576
3577static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
3578 Error **errp)
3579{
3580 error_setg(errp, "character device backend type 'parallel' not supported");
3581 return NULL;
d59044ef
GH		 3582}
3583
ffbdbe59
GH		 3584#else /* WIN32 */
3585
3586static int qmp_chardev_open_file_source(char *src, int flags,
3587 Error **errp)
3588{
3589 int fd = -1;
3590
3591 TFR(fd = qemu_open(src, flags, 0666));
3592 if (fd == -1) {
3593 error_setg(errp, "open %s: %s", src, strerror(errno));
3594 }
3595 return fd;
3596}
3597
3598static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
3599{
3600 int flags, in = -1, out = -1;
3601
3602 flags = O_WRONLY | O_TRUNC | O_CREAT | O_BINARY;
3603 out = qmp_chardev_open_file_source(file->out, flags, errp);
3604 if (error_is_set(errp)) {
3605 return NULL;
3606 }
3607
3608 if (file->in) {
3609 flags = O_RDONLY;
3610 in = qmp_chardev_open_file_source(file->in, flags, errp);
3611 if (error_is_set(errp)) {
3612 qemu_close(out);
3613 return NULL;
3614 }
3615 }
3616
3617 return qemu_chr_open_fd(in, out);
3618}
3619
d36b2b90
MA		 3620static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
3621 Error **errp)
d59044ef 3622{
d59044ef 3623#ifdef HAVE_CHARDEV_TTY
d36b2b90
MA		 3624 int fd;
3625
3626 fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
3627 if (error_is_set(errp)) {
3628 return NULL;
39099991 3629 }
f9e8cacc 3630 qemu_set_nonblock(fd);
d36b2b90
MA		 3631 return qemu_chr_open_tty_fd(fd);
3632#else
3633 error_setg(errp, "character device backend type 'serial' not supported");
3634 return NULL;
88a946d3 3635#endif
d36b2b90
MA		 3636}
3637
3638static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
3639 Error **errp)
3640{
88a946d3 3641#ifdef HAVE_CHARDEV_PARPORT
d36b2b90
MA		 3642 int fd;
3643
3644 fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
3645 if (error_is_set(errp)) {
d59044ef
GH		 3646 return NULL;
3647 }
d36b2b90
MA		 3648 return qemu_chr_open_pp_fd(fd);
3649#else
3650 error_setg(errp, "character device backend type 'parallel' not supported");
3651 return NULL;
3652#endif
d59044ef
GH		 3653}
3654
ffbdbe59
GH		 3655#endif /* WIN32 */
3656
f6bd5d6e
GH		 3657static CharDriverState *qmp_chardev_open_socket(ChardevSocket *sock,
3658 Error **errp)
3659{
3660 SocketAddress *addr = sock->addr;
3661 bool do_nodelay = sock->has_nodelay ? sock->nodelay : false;
3662 bool is_listen = sock->has_server ? sock->server : true;
3663 bool is_telnet = sock->has_telnet ? sock->telnet : false;
3664 bool is_waitconnect = sock->has_wait ? sock->wait : false;
3665 int fd;
3666
3667 if (is_listen) {
3668 fd = socket_listen(addr, errp);
3669 } else {
3670 fd = socket_connect(addr, errp, NULL, NULL);
3671 }
3672 if (error_is_set(errp)) {
3673 return NULL;
3674 }
3675 return qemu_chr_open_socket_fd(fd, do_nodelay, is_listen,
3676 is_telnet, is_waitconnect, errp);
3677}
3678
3ecc059d
GH		 3679static CharDriverState *qmp_chardev_open_dgram(ChardevDgram *dgram,
3680 Error **errp)
3681{
3682 int fd;
3683
3684 fd = socket_dgram(dgram->remote, dgram->local, errp);
3685 if (error_is_set(errp)) {
3686 return NULL;
3687 }
3688 return qemu_chr_open_udp_fd(fd);
3689}
3690
f1a1a356
GH		 3691ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
3692 Error **errp)
3693{
3694 ChardevReturn *ret = g_new0(ChardevReturn, 1);
edb2fb3c 3695 CharDriverState *base, *chr = NULL;
f1a1a356
GH		 3696
3697 chr = qemu_chr_find(id);
3698 if (chr) {
3699 error_setg(errp, "Chardev '%s' already exists", id);
3700 g_free(ret);
3701 return NULL;
3702 }
3703
3704 switch (backend->kind) {
ffbdbe59
GH		 3705 case CHARDEV_BACKEND_KIND_FILE:
3706 chr = qmp_chardev_open_file(backend->file, errp);
3707 break;
d36b2b90
MA		 3708 case CHARDEV_BACKEND_KIND_SERIAL:
3709 chr = qmp_chardev_open_serial(backend->serial, errp);
3710 break;
3711 case CHARDEV_BACKEND_KIND_PARALLEL:
3712 chr = qmp_chardev_open_parallel(backend->parallel, errp);
d59044ef 3713 break;
548cbb36
GH		 3714 case CHARDEV_BACKEND_KIND_PIPE:
3715 chr = qemu_chr_open_pipe(backend->pipe);
3716 break;
f6bd5d6e
GH		 3717 case CHARDEV_BACKEND_KIND_SOCKET:
3718 chr = qmp_chardev_open_socket(backend->socket, errp);
3719 break;
3ecc059d
GH		 3720 case CHARDEV_BACKEND_KIND_DGRAM:
3721 chr = qmp_chardev_open_dgram(backend->dgram, errp);
3722 break;
0a1a7fab
GH		 3723#ifdef HAVE_CHARDEV_TTY
3724 case CHARDEV_BACKEND_KIND_PTY:
e68c5958 3725 chr = qemu_chr_open_pty(id, ret);
0a1a7fab 3726 break;
0a1a7fab 3727#endif
f1a1a356 3728 case CHARDEV_BACKEND_KIND_NULL:
80dca9e6 3729 chr = qemu_chr_open_null();
f1a1a356 3730 break;
edb2fb3c
GH		 3731 case CHARDEV_BACKEND_KIND_MUX:
3732 base = qemu_chr_find(backend->mux->chardev);
3733 if (base == NULL) {
3734 error_setg(errp, "mux: base chardev %s not found",
3735 backend->mux->chardev);
3736 break;
3737 }
3738 chr = qemu_chr_open_mux(base);
3739 break;
f5a51cab
GH		 3740 case CHARDEV_BACKEND_KIND_MSMOUSE:
3741 chr = qemu_chr_open_msmouse();
3742 break;
2d57286d
GH		 3743#ifdef CONFIG_BRLAPI
3744 case CHARDEV_BACKEND_KIND_BRAILLE:
3745 chr = chr_baum_init();
3746 break;
3747#endif
7c358031
GH		 3748 case CHARDEV_BACKEND_KIND_STDIO:
3749 chr = qemu_chr_open_stdio(backend->stdio);
3750 break;
d9ac374f
GH		 3751#ifdef _WIN32
3752 case CHARDEV_BACKEND_KIND_CONSOLE:
3753 chr = qemu_chr_open_win_con();
3754 break;
cd153e2a
GH		 3755#endif
3756#ifdef CONFIG_SPICE
3757 case CHARDEV_BACKEND_KIND_SPICEVMC:
3758 chr = qemu_chr_open_spice_vmc(backend->spicevmc->type);
3759 break;
3760 case CHARDEV_BACKEND_KIND_SPICEPORT:
3761 chr = qemu_chr_open_spice_port(backend->spiceport->fqdn);
3762 break;
d9ac374f 3763#endif
702ec69c
GH		 3764 case CHARDEV_BACKEND_KIND_VC:
3765 chr = vc_init(backend->vc);
3766 break;
1da48c65
GH		 3767 case CHARDEV_BACKEND_KIND_MEMORY:
3768 chr = qemu_chr_open_ringbuf(backend->memory, errp);
3769 break;
f1a1a356
GH		 3770 default:
3771 error_setg(errp, "unknown chardev backend (%d)", backend->kind);
3772 break;
3773 }
3774
3775 if (chr == NULL && !error_is_set(errp)) {
3776 error_setg(errp, "Failed to create chardev");
3777 }
3778 if (chr) {
3779 chr->label = g_strdup(id);
edb2fb3c
GH		 3780 chr->avail_connections =
3781 (backend->kind == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1;
f1a1a356
GH		 3782 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3783 return ret;
3784 } else {
3785 g_free(ret);
3786 return NULL;
3787 }
3788}
3789
3790void qmp_chardev_remove(const char *id, Error **errp)
3791{
3792 CharDriverState *chr;
3793
3794 chr = qemu_chr_find(id);
3795 if (NULL == chr) {
3796 error_setg(errp, "Chardev '%s' not found", id);
3797 return;
3798 }
3799 if (chr->chr_can_read || chr->chr_read ||
3800 chr->chr_event || chr->handler_opaque) {
3801 error_setg(errp, "Chardev '%s' is busy", id);
3802 return;
3803 }
3804 qemu_chr_delete(chr);
3805}
d654f34e
AL		 3806
3807static void register_types(void)
3808{
80dca9e6 3809 register_char_driver_qapi("null", CHARDEV_BACKEND_KIND_NULL, NULL);
d654f34e
AL		 3810 register_char_driver("socket", qemu_chr_open_socket);
3811 register_char_driver("udp", qemu_chr_open_udp);
1da48c65
GH		 3812 register_char_driver_qapi("memory", CHARDEV_BACKEND_KIND_MEMORY,
3813 qemu_chr_parse_ringbuf);
846e2e49
GH		 3814 register_char_driver_qapi("file", CHARDEV_BACKEND_KIND_FILE,
3815 qemu_chr_parse_file_out);
7c358031
GH		 3816 register_char_driver_qapi("stdio", CHARDEV_BACKEND_KIND_STDIO,
3817 qemu_chr_parse_stdio);
0f1cb51d
GH		 3818 register_char_driver_qapi("serial", CHARDEV_BACKEND_KIND_SERIAL,
3819 qemu_chr_parse_serial);
3820 register_char_driver_qapi("tty", CHARDEV_BACKEND_KIND_SERIAL,
3821 qemu_chr_parse_serial);
dc375097
GH		 3822 register_char_driver_qapi("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
3823 qemu_chr_parse_parallel);
3824 register_char_driver_qapi("parport", CHARDEV_BACKEND_KIND_PARALLEL,
3825 qemu_chr_parse_parallel);
e68c5958 3826 register_char_driver_qapi("pty", CHARDEV_BACKEND_KIND_PTY, NULL);
d9ac374f 3827 register_char_driver_qapi("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL);
548cbb36
GH		 3828 register_char_driver_qapi("pipe", CHARDEV_BACKEND_KIND_PIPE,
3829 qemu_chr_parse_pipe);
d654f34e
AL		 3830}
3831
3832type_init(register_types);
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