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qemu-char: use consistent idiom for removing sources
[qemu.git] / qemu-char.c
CommitLineData
6f97dba0
AL		 1/*
2 * QEMU System Emulator
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24#include "qemu-common.h"
83c9089e 25#include "monitor/monitor.h"
28ecbaee 26#include "ui/console.h"
9c17d615 27#include "sysemu/sysemu.h"
1de7afc9 28#include "qemu/timer.h"
dccfcd0e 29#include "sysemu/char.h"
cf3ebac7 30#include "hw/usb.h"
c5a415a0 31#include "qmp-commands.h"
6f97dba0
AL		 32
33#include <unistd.h>
34#include <fcntl.h>
6f97dba0
AL		 35#include <time.h>
36#include <errno.h>
37#include <sys/time.h>
38#include <zlib.h>
39
40#ifndef _WIN32
41#include <sys/times.h>
42#include <sys/wait.h>
43#include <termios.h>
44#include <sys/mman.h>
45#include <sys/ioctl.h>
24646c7e 46#include <sys/resource.h>
6f97dba0
AL		 47#include <sys/socket.h>
48#include <netinet/in.h>
24646c7e 49#include <net/if.h>
24646c7e 50#include <arpa/inet.h>
6f97dba0
AL		 51#include <dirent.h>
52#include <netdb.h>
53#include <sys/select.h>
71e72a19 54#ifdef CONFIG_BSD
6f97dba0 55#include <sys/stat.h>
a167ba50
AJ		 56#if defined(__GLIBC__)
57#include <pty.h>
3294ce18
MT		 58#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
59#include <libutil.h>
60#else
61#include <util.h>
a167ba50 62#endif
3294ce18
MT		 63#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
64#include <dev/ppbus/ppi.h>
65#include <dev/ppbus/ppbconf.h>
c5e97233 66#elif defined(__DragonFly__)
c5e97233
BS		 67#include <dev/misc/ppi/ppi.h>
68#include <bus/ppbus/ppbconf.h>
6f97dba0 69#endif
bbe813a2 70#else
6f97dba0 71#ifdef __linux__
6f97dba0
AL		 72#include <pty.h>
73
74#include <linux/ppdev.h>
75#include <linux/parport.h>
76#endif
77#ifdef __sun__
78#include <sys/stat.h>
79#include <sys/ethernet.h>
80#include <sys/sockio.h>
81#include <netinet/arp.h>
82#include <netinet/in.h>
83#include <netinet/in_systm.h>
84#include <netinet/ip.h>
85#include <netinet/ip_icmp.h> // must come after ip.h
86#include <netinet/udp.h>
87#include <netinet/tcp.h>
88#include <net/if.h>
89#include <syslog.h>
90#include <stropts.h>
91#endif
92#endif
93#endif
94
1de7afc9 95#include "qemu/sockets.h"
cbcc6336 96#include "ui/qemu-spice.h"
6f97dba0 97
9bd7854e
AS		 98#define READ_BUF_LEN 4096
99
6f97dba0
AL		 100/***********************************************************/
101/* character device */
102
72cf2d4f
BS		 103static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
104 QTAILQ_HEAD_INITIALIZER(chardevs);
2970a6c9 105
a425d23f 106void qemu_chr_be_event(CharDriverState *s, int event)
6f97dba0 107{
73cdf3f2
AG		 108 /* Keep track if the char device is open */
109 switch (event) {
110 case CHR_EVENT_OPENED:
16665b94 111 s->be_open = 1;
73cdf3f2
AG		 112 break;
113 case CHR_EVENT_CLOSED:
16665b94 114 s->be_open = 0;
73cdf3f2
AG		 115 break;
116 }
117
6f97dba0
AL		 118 if (!s->chr_event)
119 return;
120 s->chr_event(s->handler_opaque, event);
121}
122
fee204fd 123static gboolean qemu_chr_be_generic_open_bh(gpointer opaque)
6f97dba0
AL		 124{
125 CharDriverState *s = opaque;
a425d23f 126 qemu_chr_be_event(s, CHR_EVENT_OPENED);
9f939df9
AL		 127 s->idle_tag = 0;
128 return FALSE;
6f97dba0
AL		 129}
130
fee204fd 131void qemu_chr_be_generic_open(CharDriverState *s)
6f97dba0 132{
9f939df9 133 if (s->idle_tag == 0) {
fee204fd 134 s->idle_tag = g_idle_add(qemu_chr_be_generic_open_bh, s);
6f97dba0
AL		 135 }
136}
137
2cc6e0a1 138int qemu_chr_fe_write(CharDriverState *s, const uint8_t *buf, int len)
6f97dba0
AL		 139{
140 return s->chr_write(s, buf, len);
141}
142
cd18720a
AL		 143int qemu_chr_fe_write_all(CharDriverState *s, const uint8_t *buf, int len)
144{
145 int offset = 0;
146 int res;
147
148 while (offset < len) {
149 do {
150 res = s->chr_write(s, buf + offset, len - offset);
151 if (res == -1 && errno == EAGAIN) {
152 g_usleep(100);
153 }
154 } while (res == -1 && errno == EAGAIN);
155
156 if (res == 0) {
157 break;
158 }
159
160 if (res < 0) {
161 return res;
162 }
163
164 offset += res;
165 }
166
167 return offset;
168}
169
41084f1b 170int qemu_chr_fe_ioctl(CharDriverState *s, int cmd, void *arg)
6f97dba0
AL		 171{
172 if (!s->chr_ioctl)
173 return -ENOTSUP;
174 return s->chr_ioctl(s, cmd, arg);
175}
176
909cda12 177int qemu_chr_be_can_write(CharDriverState *s)
6f97dba0
AL		 178{
179 if (!s->chr_can_read)
180 return 0;
181 return s->chr_can_read(s->handler_opaque);
182}
183
fa5efccb 184void qemu_chr_be_write(CharDriverState *s, uint8_t *buf, int len)
6f97dba0 185{
ac310734
SW		 186 if (s->chr_read) {
187 s->chr_read(s->handler_opaque, buf, len);
188 }
6f97dba0
AL		 189}
190
74c0d6f0 191int qemu_chr_fe_get_msgfd(CharDriverState *s)
7d174059
MM		 192{
193 return s->get_msgfd ? s->get_msgfd(s) : -1;
194}
195
13661089
DB		 196int qemu_chr_add_client(CharDriverState *s, int fd)
197{
198 return s->chr_add_client ? s->chr_add_client(s, fd) : -1;
199}
200
6f97dba0
AL		 201void qemu_chr_accept_input(CharDriverState *s)
202{
203 if (s->chr_accept_input)
204 s->chr_accept_input(s);
98c8ee1d 205 qemu_notify_event();
6f97dba0
AL		 206}
207
e7e71b0e 208void qemu_chr_fe_printf(CharDriverState *s, const char *fmt, ...)
6f97dba0 209{
9bd7854e 210 char buf[READ_BUF_LEN];
6f97dba0
AL		 211 va_list ap;
212 va_start(ap, fmt);
213 vsnprintf(buf, sizeof(buf), fmt, ap);
2cc6e0a1 214 qemu_chr_fe_write(s, (uint8_t *)buf, strlen(buf));
6f97dba0
AL		 215 va_end(ap);
216}
217
6f97dba0 218void qemu_chr_add_handlers(CharDriverState *s,
7b27a769 219 IOCanReadHandler *fd_can_read,
6f97dba0
AL		 220 IOReadHandler *fd_read,
221 IOEventHandler *fd_event,
222 void *opaque)
223{
19083228
HG		 224 int fe_open;
225
da7d998b 226 if (!opaque && !fd_can_read && !fd_read && !fd_event) {
19083228
HG		 227 fe_open = 0;
228 } else {
229 fe_open = 1;
2d6c1ef4 230 }
6f97dba0
AL		 231 s->chr_can_read = fd_can_read;
232 s->chr_read = fd_read;
233 s->chr_event = fd_event;
234 s->handler_opaque = opaque;
235 if (s->chr_update_read_handler)
236 s->chr_update_read_handler(s);
73cdf3f2 237
19083228 238 if (!s->explicit_fe_open) {
8e25daa8 239 qemu_chr_fe_set_open(s, fe_open);
19083228
HG		 240 }
241
73cdf3f2
AG		 242 /* We're connecting to an already opened device, so let's make sure we
243 also get the open event */
a59bcd31 244 if (fe_open && s->be_open) {
fee204fd 245 qemu_chr_be_generic_open(s);
73cdf3f2 246 }
6f97dba0
AL		 247}
248
249static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
250{
251 return len;
252}
253
80dca9e6 254static CharDriverState *qemu_chr_open_null(void)
6f97dba0
AL		 255{
256 CharDriverState *chr;
257
7267c094 258 chr = g_malloc0(sizeof(CharDriverState));
6f97dba0 259 chr->chr_write = null_chr_write;
1f51470d 260 return chr;
6f97dba0
AL		 261}
262
263/* MUX driver for serial I/O splitting */
6f97dba0
AL		 264#define MAX_MUX 4
265#define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
266#define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
267typedef struct {
7b27a769 268 IOCanReadHandler *chr_can_read[MAX_MUX];
6f97dba0
AL		 269 IOReadHandler *chr_read[MAX_MUX];
270 IOEventHandler *chr_event[MAX_MUX];
271 void *ext_opaque[MAX_MUX];
272 CharDriverState *drv;
799f1f23 273 int focus;
6f97dba0
AL		 274 int mux_cnt;
275 int term_got_escape;
276 int max_size;
a80bf99f
AL		 277 /* Intermediate input buffer allows to catch escape sequences even if the
278 currently active device is not accepting any input - but only until it
279 is full as well. */
280 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
281 int prod[MAX_MUX];
282 int cons[MAX_MUX];
2d22959d 283 int timestamps;
4ab312f7 284 int linestart;
2d22959d 285 int64_t timestamps_start;
6f97dba0
AL		 286} MuxDriver;
287
288
289static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
290{
291 MuxDriver *d = chr->opaque;
292 int ret;
2d22959d 293 if (!d->timestamps) {
6f97dba0
AL		 294 ret = d->drv->chr_write(d->drv, buf, len);
295 } else {
296 int i;
297
298 ret = 0;
4ab312f7
JK		 299 for (i = 0; i < len; i++) {
300 if (d->linestart) {
6f97dba0
AL		 301 char buf1[64];
302 int64_t ti;
303 int secs;
304
7bd427d8 305 ti = qemu_get_clock_ms(rt_clock);
2d22959d
JK		 306 if (d->timestamps_start == -1)
307 d->timestamps_start = ti;
308 ti -= d->timestamps_start;
a4bb1db8 309 secs = ti / 1000;
6f97dba0
AL		 310 snprintf(buf1, sizeof(buf1),
311 "[%02d:%02d:%02d.%03d] ",
312 secs / 3600,
313 (secs / 60) % 60,
314 secs % 60,
a4bb1db8 315 (int)(ti % 1000));
6f97dba0 316 d->drv->chr_write(d->drv, (uint8_t *)buf1, strlen(buf1));
4ab312f7
JK		 317 d->linestart = 0;
318 }
319 ret += d->drv->chr_write(d->drv, buf+i, 1);
320 if (buf[i] == '\n') {
321 d->linestart = 1;
6f97dba0
AL		 322 }
323 }
324 }
325 return ret;
326}
327
328static const char * const mux_help[] = {
329 "% h print this help\n\r",
330 "% x exit emulator\n\r",
331 "% s save disk data back to file (if -snapshot)\n\r",
332 "% t toggle console timestamps\n\r"
333 "% b send break (magic sysrq)\n\r",
334 "% c switch between console and monitor\n\r",
335 "% % sends %\n\r",
336 NULL
337};
338
339int term_escape_char = 0x01; /* ctrl-a is used for escape */
340static void mux_print_help(CharDriverState *chr)
341{
342 int i, j;
343 char ebuf[15] = "Escape-Char";
344 char cbuf[50] = "\n\r";
345
346 if (term_escape_char > 0 && term_escape_char < 26) {
347 snprintf(cbuf, sizeof(cbuf), "\n\r");
348 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
349 } else {
350 snprintf(cbuf, sizeof(cbuf),
351 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
352 term_escape_char);
353 }
354 chr->chr_write(chr, (uint8_t *)cbuf, strlen(cbuf));
355 for (i = 0; mux_help[i] != NULL; i++) {
356 for (j=0; mux_help[i][j] != '\0'; j++) {
357 if (mux_help[i][j] == '%')
358 chr->chr_write(chr, (uint8_t *)ebuf, strlen(ebuf));
359 else
360 chr->chr_write(chr, (uint8_t *)&mux_help[i][j], 1);
361 }
362 }
363}
364
2724b180
AL		 365static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
366{
367 if (d->chr_event[mux_nr])
368 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
369}
370
6f97dba0
AL		 371static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
372{
373 if (d->term_got_escape) {
374 d->term_got_escape = 0;
375 if (ch == term_escape_char)
376 goto send_char;
377 switch(ch) {
378 case '?':
379 case 'h':
380 mux_print_help(chr);
381 break;
382 case 'x':
383 {
384 const char *term = "QEMU: Terminated\n\r";
385 chr->chr_write(chr,(uint8_t *)term,strlen(term));
386 exit(0);
387 break;
388 }
389 case 's':
6ab4b5ab 390 bdrv_commit_all();
6f97dba0
AL		 391 break;
392 case 'b':
a425d23f 393 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
6f97dba0
AL		 394 break;
395 case 'c':
396 /* Switch to the next registered device */
799f1f23
GH		 397 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
398 d->focus++;
399 if (d->focus >= d->mux_cnt)
400 d->focus = 0;
401 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
6f97dba0 402 break;
2d22959d
JK		 403 case 't':
404 d->timestamps = !d->timestamps;
405 d->timestamps_start = -1;
4ab312f7 406 d->linestart = 0;
2d22959d 407 break;
6f97dba0
AL		 408 }
409 } else if (ch == term_escape_char) {
410 d->term_got_escape = 1;
411 } else {
412 send_char:
413 return 1;
414 }
415 return 0;
416}
417
418static void mux_chr_accept_input(CharDriverState *chr)
419{
6f97dba0 420 MuxDriver *d = chr->opaque;
799f1f23 421 int m = d->focus;
6f97dba0 422
a80bf99f 423 while (d->prod[m] != d->cons[m] &&
6f97dba0
AL		 424 d->chr_can_read[m] &&
425 d->chr_can_read[m](d->ext_opaque[m])) {
426 d->chr_read[m](d->ext_opaque[m],
a80bf99f 427 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
6f97dba0
AL		 428 }
429}
430
431static int mux_chr_can_read(void *opaque)
432{
433 CharDriverState *chr = opaque;
434 MuxDriver *d = chr->opaque;
799f1f23 435 int m = d->focus;
6f97dba0 436
a80bf99f 437 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
6f97dba0 438 return 1;
a80bf99f
AL		 439 if (d->chr_can_read[m])
440 return d->chr_can_read[m](d->ext_opaque[m]);
6f97dba0
AL		 441 return 0;
442}
443
444static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
445{
446 CharDriverState *chr = opaque;
447 MuxDriver *d = chr->opaque;
799f1f23 448 int m = d->focus;
6f97dba0
AL		 449 int i;
450
451 mux_chr_accept_input (opaque);
452
453 for(i = 0; i < size; i++)
454 if (mux_proc_byte(chr, d, buf[i])) {
a80bf99f 455 if (d->prod[m] == d->cons[m] &&
6f97dba0
AL		 456 d->chr_can_read[m] &&
457 d->chr_can_read[m](d->ext_opaque[m]))
458 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
459 else
a80bf99f 460 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
6f97dba0
AL		 461 }
462}
463
464static void mux_chr_event(void *opaque, int event)
465{
466 CharDriverState *chr = opaque;
467 MuxDriver *d = chr->opaque;
468 int i;
469
470 /* Send the event to all registered listeners */
471 for (i = 0; i < d->mux_cnt; i++)
2724b180 472 mux_chr_send_event(d, i, event);
6f97dba0
AL		 473}
474
475static void mux_chr_update_read_handler(CharDriverState *chr)
476{
477 MuxDriver *d = chr->opaque;
478
479 if (d->mux_cnt >= MAX_MUX) {
480 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
481 return;
482 }
483 d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
484 d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
485 d->chr_read[d->mux_cnt] = chr->chr_read;
486 d->chr_event[d->mux_cnt] = chr->chr_event;
487 /* Fix up the real driver with mux routines */
488 if (d->mux_cnt == 0) {
489 qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
490 mux_chr_event, chr);
491 }
799f1f23
GH		 492 if (d->focus != -1) {
493 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
a7aec5da 494 }
799f1f23 495 d->focus = d->mux_cnt;
6f97dba0 496 d->mux_cnt++;
799f1f23 497 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
6f97dba0
AL		 498}
499
500static CharDriverState *qemu_chr_open_mux(CharDriverState *drv)
501{
502 CharDriverState *chr;
503 MuxDriver *d;
504
7267c094
AL		 505 chr = g_malloc0(sizeof(CharDriverState));
506 d = g_malloc0(sizeof(MuxDriver));
6f97dba0
AL		 507
508 chr->opaque = d;
509 d->drv = drv;
799f1f23 510 d->focus = -1;
6f97dba0
AL		 511 chr->chr_write = mux_chr_write;
512 chr->chr_update_read_handler = mux_chr_update_read_handler;
513 chr->chr_accept_input = mux_chr_accept_input;
7c32c4fe 514 /* Frontend guest-open / -close notification is not support with muxes */
574b711a 515 chr->chr_set_fe_open = NULL;
73cdf3f2
AG		 516
517 /* Muxes are always open on creation */
fee204fd 518 qemu_chr_be_generic_open(chr);
73cdf3f2 519
6f97dba0
AL		 520 return chr;
521}
522
523
524#ifdef _WIN32
d247d25f 525int send_all(int fd, const void *buf, int len1)
6f97dba0
AL		 526{
527 int ret, len;
528
529 len = len1;
530 while (len > 0) {
531 ret = send(fd, buf, len, 0);
532 if (ret < 0) {
6f97dba0
AL		 533 errno = WSAGetLastError();
534 if (errno != WSAEWOULDBLOCK) {
535 return -1;
536 }
537 } else if (ret == 0) {
538 break;
539 } else {
540 buf += ret;
541 len -= ret;
542 }
543 }
544 return len1 - len;
545}
546
547#else
548
5fc9cfed 549int send_all(int fd, const void *_buf, int len1)
6f97dba0
AL		 550{
551 int ret, len;
5fc9cfed 552 const uint8_t *buf = _buf;
6f97dba0
AL		 553
554 len = len1;
555 while (len > 0) {
556 ret = write(fd, buf, len);
557 if (ret < 0) {
558 if (errno != EINTR && errno != EAGAIN)
559 return -1;
560 } else if (ret == 0) {
561 break;
562 } else {
563 buf += ret;
564 len -= ret;
565 }
566 }
567 return len1 - len;
568}
4549a8b7
SB		 569
570int recv_all(int fd, void *_buf, int len1, bool single_read)
571{
572 int ret, len;
573 uint8_t *buf = _buf;
574
575 len = len1;
576 while ((len > 0) && (ret = read(fd, buf, len)) != 0) {
577 if (ret < 0) {
578 if (errno != EINTR && errno != EAGAIN) {
579 return -1;
580 }
581 continue;
582 } else {
583 if (single_read) {
584 return ret;
585 }
586 buf += ret;
587 len -= ret;
588 }
589 }
590 return len1 - len;
591}
592
6f97dba0
AL		 593#endif /* !_WIN32 */
594
96c63847
AL		 595typedef struct IOWatchPoll
596{
d185c094
PB		 597 GSource parent;
598
1e885b25 599 GIOChannel *channel;
96c63847 600 GSource *src;
96c63847
AL		 601
602 IOCanReadHandler *fd_can_read;
1e885b25 603 GSourceFunc fd_read;
96c63847 604 void *opaque;
96c63847
AL		 605} IOWatchPoll;
606
96c63847
AL		 607static IOWatchPoll *io_watch_poll_from_source(GSource *source)
608{
d185c094 609 return container_of(source, IOWatchPoll, parent);
96c63847
AL		 610}
611
612static gboolean io_watch_poll_prepare(GSource *source, gint *timeout_)
613{
614 IOWatchPoll *iwp = io_watch_poll_from_source(source);
d185c094 615 bool now_active = iwp->fd_can_read(iwp->opaque) > 0;
1e885b25 616 bool was_active = iwp->src != NULL;
d185c094 617 if (was_active == now_active) {
96c63847
AL		 618 return FALSE;
619 }
620
d185c094 621 if (now_active) {
1e885b25
PB		 622 iwp->src = g_io_create_watch(iwp->channel, G_IO_IN | G_IO_ERR | G_IO_HUP);
623 g_source_set_callback(iwp->src, iwp->fd_read, iwp->opaque, NULL);
d185c094
PB		 624 g_source_attach(iwp->src, NULL);
625 } else {
1e885b25
PB		 626 g_source_destroy(iwp->src);
627 g_source_unref(iwp->src);
628 iwp->src = NULL;
d185c094
PB		 629 }
630 return FALSE;
96c63847
AL		 631}
632
633static gboolean io_watch_poll_check(GSource *source)
634{
d185c094 635 return FALSE;
96c63847
AL		 636}
637
638static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
639 gpointer user_data)
640{
d185c094 641 abort();
96c63847
AL		 642}
643
644static void io_watch_poll_finalize(GSource *source)
645{
646 IOWatchPoll *iwp = io_watch_poll_from_source(source);
910b6368
PB		 647 if (iwp->src) {
648 g_source_destroy(iwp->src);
649 g_source_unref(iwp->src);
650 iwp->src = NULL;
651 }
96c63847
AL		 652}
653
654static GSourceFuncs io_watch_poll_funcs = {
655 .prepare = io_watch_poll_prepare,
656 .check = io_watch_poll_check,
657 .dispatch = io_watch_poll_dispatch,
658 .finalize = io_watch_poll_finalize,
659};
660
661/* Can only be used for read */
662static guint io_add_watch_poll(GIOChannel *channel,
663 IOCanReadHandler *fd_can_read,
664 GIOFunc fd_read,
665 gpointer user_data)
666{
667 IOWatchPoll *iwp;
0ca5aa4f 668 int tag;
96c63847 669
d185c094 670 iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs, sizeof(IOWatchPoll));
96c63847
AL		 671 iwp->fd_can_read = fd_can_read;
672 iwp->opaque = user_data;
1e885b25
PB		 673 iwp->channel = channel;
674 iwp->fd_read = (GSourceFunc) fd_read;
675 iwp->src = NULL;
96c63847 676
0ca5aa4f
PB		 677 tag = g_source_attach(&iwp->parent, NULL);
678 g_source_unref(&iwp->parent);
679 return tag;
96c63847
AL		 680}
681
44ab9ed4 682#ifndef _WIN32
96c63847
AL		 683static GIOChannel *io_channel_from_fd(int fd)
684{
685 GIOChannel *chan;
686
687 if (fd == -1) {
688 return NULL;
689 }
690
691 chan = g_io_channel_unix_new(fd);
692
693 g_io_channel_set_encoding(chan, NULL, NULL);
694 g_io_channel_set_buffered(chan, FALSE);
695
696 return chan;
697}
44ab9ed4 698#endif
96c63847 699
76a9644b
AL		 700static GIOChannel *io_channel_from_socket(int fd)
701{
702 GIOChannel *chan;
703
704 if (fd == -1) {
705 return NULL;
706 }
707
708#ifdef _WIN32
709 chan = g_io_channel_win32_new_socket(fd);
710#else
711 chan = g_io_channel_unix_new(fd);
712#endif
713
714 g_io_channel_set_encoding(chan, NULL, NULL);
715 g_io_channel_set_buffered(chan, FALSE);
716
717 return chan;
718}
719
684a096e 720static int io_channel_send(GIOChannel *fd, const void *buf, size_t len)
96c63847
AL		 721{
722 GIOStatus status;
684a096e 723 size_t offset;
96c63847 724
684a096e
AL		 725 offset = 0;
726 while (offset < len) {
727 gsize bytes_written;
728
729 status = g_io_channel_write_chars(fd, buf + offset, len - offset,
96c63847
AL		 730 &bytes_written, NULL);
731 if (status != G_IO_STATUS_NORMAL) {
23673ca7 732 if (status == G_IO_STATUS_AGAIN) {
684a096e
AL		 733 /* If we've written any data, return a partial write. */
734 if (offset) {
735 break;
736 }
23673ca7 737 errno = EAGAIN;
23673ca7
AL		 738 } else {
739 errno = EINVAL;
96c63847 740 }
684a096e
AL		 741
742 return -1;
96c63847
AL		 743 } else if (status == G_IO_STATUS_EOF) {
744 break;
96c63847 745 }
684a096e
AL		 746
747 offset += bytes_written;
96c63847 748 }
684a096e
AL		 749
750 return offset;
96c63847 751}
96c63847 752
44ab9ed4
BS		 753#ifndef _WIN32
754
a29753f8
AL		 755typedef struct FDCharDriver {
756 CharDriverState *chr;
757 GIOChannel *fd_in, *fd_out;
758 guint fd_in_tag;
6f97dba0 759 int max_size;
a29753f8 760 QTAILQ_ENTRY(FDCharDriver) node;
6f97dba0
AL		 761} FDCharDriver;
762
6f97dba0
AL		 763static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
764{
765 FDCharDriver *s = chr->opaque;
a29753f8 766
684a096e 767 return io_channel_send(s->fd_out, buf, len);
6f97dba0
AL		 768}
769
a29753f8 770static gboolean fd_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 771{
772 CharDriverState *chr = opaque;
773 FDCharDriver *s = chr->opaque;
a29753f8 774 int len;
9bd7854e 775 uint8_t buf[READ_BUF_LEN];
a29753f8
AL		 776 GIOStatus status;
777 gsize bytes_read;
6f97dba0
AL		 778
779 len = sizeof(buf);
a29753f8 780 if (len > s->max_size) {
6f97dba0 781 len = s->max_size;
a29753f8
AL		 782 }
783 if (len == 0) {
784 return FALSE;
785 }
786
787 status = g_io_channel_read_chars(chan, (gchar *)buf,
788 len, &bytes_read, NULL);
789 if (status == G_IO_STATUS_EOF) {
a425d23f 790 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
a29753f8 791 return FALSE;
6f97dba0 792 }
a29753f8
AL		 793 if (status == G_IO_STATUS_NORMAL) {
794 qemu_chr_be_write(chr, buf, bytes_read);
6f97dba0 795 }
a29753f8
AL		 796
797 return TRUE;
798}
799
800static int fd_chr_read_poll(void *opaque)
801{
802 CharDriverState *chr = opaque;
803 FDCharDriver *s = chr->opaque;
804
805 s->max_size = qemu_chr_be_can_write(chr);
806 return s->max_size;
6f97dba0
AL		 807}
808
23673ca7
AL		 809static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
810{
811 FDCharDriver *s = chr->opaque;
812 return g_io_create_watch(s->fd_out, cond);
813}
814
6f97dba0
AL		 815static void fd_chr_update_read_handler(CharDriverState *chr)
816{
817 FDCharDriver *s = chr->opaque;
818
a29753f8
AL		 819 if (s->fd_in_tag) {
820 g_source_remove(s->fd_in_tag);
910b6368 821 s->fd_in_tag = 0;
a29753f8
AL		 822 }
823
824 if (s->fd_in) {
825 s->fd_in_tag = io_add_watch_poll(s->fd_in, fd_chr_read_poll, fd_chr_read, chr);
6f97dba0
AL		 826 }
827}
828
829static void fd_chr_close(struct CharDriverState *chr)
830{
831 FDCharDriver *s = chr->opaque;
832
a29753f8
AL		 833 if (s->fd_in_tag) {
834 g_source_remove(s->fd_in_tag);
835 s->fd_in_tag = 0;
836 }
837
838 if (s->fd_in) {
839 g_io_channel_unref(s->fd_in);
840 }
841 if (s->fd_out) {
842 g_io_channel_unref(s->fd_out);
6f97dba0
AL		 843 }
844
7267c094 845 g_free(s);
a425d23f 846 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 847}
848
849/* open a character device to a unix fd */
850static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
851{
852 CharDriverState *chr;
853 FDCharDriver *s;
854
7267c094
AL		 855 chr = g_malloc0(sizeof(CharDriverState));
856 s = g_malloc0(sizeof(FDCharDriver));
a29753f8
AL		 857 s->fd_in = io_channel_from_fd(fd_in);
858 s->fd_out = io_channel_from_fd(fd_out);
23673ca7 859 fcntl(fd_out, F_SETFL, O_NONBLOCK);
a29753f8 860 s->chr = chr;
6f97dba0 861 chr->opaque = s;
23673ca7 862 chr->chr_add_watch = fd_chr_add_watch;
6f97dba0
AL		 863 chr->chr_write = fd_chr_write;
864 chr->chr_update_read_handler = fd_chr_update_read_handler;
865 chr->chr_close = fd_chr_close;
866
fee204fd 867 qemu_chr_be_generic_open(chr);
6f97dba0
AL		 868
869 return chr;
870}
871
548cbb36 872static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
6f97dba0
AL		 873{
874 int fd_in, fd_out;
875 char filename_in[256], filename_out[256];
548cbb36 876 const char *filename = opts->device;
7d31544f
GH		 877
878 if (filename == NULL) {
879 fprintf(stderr, "chardev: pipe: no filename given\n");
1f51470d 880 return NULL;
7d31544f 881 }
6f97dba0
AL		 882
883 snprintf(filename_in, 256, "%s.in", filename);
884 snprintf(filename_out, 256, "%s.out", filename);
40ff6d7e
KW		 885 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
886 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
6f97dba0
AL		 887 if (fd_in < 0 || fd_out < 0) {
888 if (fd_in >= 0)
889 close(fd_in);
890 if (fd_out >= 0)
891 close(fd_out);
b181e047 892 TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
a89dd6c3 893 if (fd_in < 0) {
1f51470d 894 return NULL;
a89dd6c3 895 }
6f97dba0 896 }
1f51470d 897 return qemu_chr_open_fd(fd_in, fd_out);
6f97dba0
AL		 898}
899
6f97dba0
AL		 900/* init terminal so that we can grab keys */
901static struct termios oldtty;
902static int old_fd0_flags;
bb002513 903static bool stdio_allow_signal;
6f97dba0
AL		 904
905static void term_exit(void)
906{
907 tcsetattr (0, TCSANOW, &oldtty);
908 fcntl(0, F_SETFL, old_fd0_flags);
909}
910
bb002513 911static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
6f97dba0
AL		 912{
913 struct termios tty;
914
0369364b 915 tty = oldtty;
bb002513
PB		 916 if (!echo) {
917 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
6f97dba0 918 |INLCR|IGNCR|ICRNL|IXON);
bb002513
PB		 919 tty.c_oflag |= OPOST;
920 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
921 tty.c_cflag &= ~(CSIZE|PARENB);
922 tty.c_cflag |= CS8;
923 tty.c_cc[VMIN] = 1;
924 tty.c_cc[VTIME] = 0;
925 }
6f97dba0 926 /* if graphical mode, we allow Ctrl-C handling */
bb002513 927 if (!stdio_allow_signal)
6f97dba0 928 tty.c_lflag &= ~ISIG;
6f97dba0
AL		 929
930 tcsetattr (0, TCSANOW, &tty);
6f97dba0
AL		 931}
932
933static void qemu_chr_close_stdio(struct CharDriverState *chr)
934{
935 term_exit();
6f97dba0
AL		 936 fd_chr_close(chr);
937}
938
7c358031 939static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
6f97dba0
AL		 940{
941 CharDriverState *chr;
942
ab51b1d5
MT		 943 if (is_daemonized()) {
944 error_report("cannot use stdio with -daemonize");
945 return NULL;
946 }
ed7a1540
AL		 947 old_fd0_flags = fcntl(0, F_GETFL);
948 tcgetattr (0, &oldtty);
949 fcntl(0, F_SETFL, O_NONBLOCK);
950 atexit(term_exit);
0369364b 951
6f97dba0
AL		 952 chr = qemu_chr_open_fd(0, 1);
953 chr->chr_close = qemu_chr_close_stdio;
bb002513 954 chr->chr_set_echo = qemu_chr_set_echo_stdio;
7c358031
GH		 955 stdio_allow_signal = display_type != DT_NOGRAPHIC;
956 if (opts->has_signal) {
957 stdio_allow_signal = opts->signal;
958 }
15f31519 959 qemu_chr_fe_set_echo(chr, false);
6f97dba0 960
1f51470d 961 return chr;
6f97dba0
AL		 962}
963
964#ifdef __sun__
965/* Once Solaris has openpty(), this is going to be removed. */
3f4cb3d3
BS		 966static int openpty(int *amaster, int *aslave, char *name,
967 struct termios *termp, struct winsize *winp)
6f97dba0
AL		 968{
969 const char *slave;
970 int mfd = -1, sfd = -1;
971
972 *amaster = *aslave = -1;
973
974 mfd = open("/dev/ptmx", O_RDWR | O_NOCTTY);
975 if (mfd < 0)
976 goto err;
977
978 if (grantpt(mfd) == -1 || unlockpt(mfd) == -1)
979 goto err;
980
981 if ((slave = ptsname(mfd)) == NULL)
982 goto err;
983
984 if ((sfd = open(slave, O_RDONLY | O_NOCTTY)) == -1)
985 goto err;
986
987 if (ioctl(sfd, I_PUSH, "ptem") == -1 ||
988 (termp != NULL && tcgetattr(sfd, termp) < 0))
989 goto err;
990
991 if (amaster)
992 *amaster = mfd;
993 if (aslave)
994 *aslave = sfd;
995 if (winp)
996 ioctl(sfd, TIOCSWINSZ, winp);
997
998 return 0;
999
1000err:
1001 if (sfd != -1)
1002 close(sfd);
1003 close(mfd);
1004 return -1;
1005}
1006
3f4cb3d3 1007static void cfmakeraw (struct termios *termios_p)
6f97dba0
AL		 1008{
1009 termios_p->c_iflag &=
1010 ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
1011 termios_p->c_oflag &= ~OPOST;
1012 termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
1013 termios_p->c_cflag &= ~(CSIZE|PARENB);
1014 termios_p->c_cflag |= CS8;
1015
1016 termios_p->c_cc[VMIN] = 0;
1017 termios_p->c_cc[VTIME] = 0;
1018}
1019#endif
1020
1021#if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
a167ba50
AJ		 1022 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
1023 || defined(__GLIBC__)
6f97dba0 1024
e551498e
GH		 1025#define HAVE_CHARDEV_TTY 1
1026
6f97dba0 1027typedef struct {
093d3a20
AL		 1028 GIOChannel *fd;
1029 guint fd_tag;
6f97dba0
AL		 1030 int connected;
1031 int polling;
1032 int read_bytes;
8aa33caf 1033 guint timer_tag;
6f97dba0
AL		 1034} PtyCharDriver;
1035
1036static void pty_chr_update_read_handler(CharDriverState *chr);
1037static void pty_chr_state(CharDriverState *chr, int connected);
1038
8aa33caf
AL		 1039static gboolean pty_chr_timer(gpointer opaque)
1040{
1041 struct CharDriverState *chr = opaque;
1042 PtyCharDriver *s = chr->opaque;
1043
1044 if (s->connected) {
1045 goto out;
1046 }
1047 if (s->polling) {
1048 /* If we arrive here without polling being cleared due
1049 * read returning -EIO, then we are (re-)connected */
1050 pty_chr_state(chr, 1);
1051 goto out;
1052 }
1053
1054 /* Next poll ... */
1055 pty_chr_update_read_handler(chr);
1056
1057out:
1058 return FALSE;
1059}
1060
1061static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
1062{
1063 PtyCharDriver *s = chr->opaque;
1064
1065 if (s->timer_tag) {
1066 g_source_remove(s->timer_tag);
1067 s->timer_tag = 0;
1068 }
1069
1070 if (ms == 1000) {
1071 s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
1072 } else {
1073 s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
1074 }
1075}
1076
6f97dba0
AL		 1077static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1078{
1079 PtyCharDriver *s = chr->opaque;
1080
1081 if (!s->connected) {
1082 /* guest sends data, check for (re-)connect */
1083 pty_chr_update_read_handler(chr);
1084 return 0;
1085 }
684a096e 1086 return io_channel_send(s->fd, buf, len);
6f97dba0
AL		 1087}
1088
e6a87ed8
AL		 1089static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1090{
1091 PtyCharDriver *s = chr->opaque;
1092 return g_io_create_watch(s->fd, cond);
1093}
1094
6f97dba0
AL		 1095static int pty_chr_read_poll(void *opaque)
1096{
1097 CharDriverState *chr = opaque;
1098 PtyCharDriver *s = chr->opaque;
1099
909cda12 1100 s->read_bytes = qemu_chr_be_can_write(chr);
6f97dba0
AL		 1101 return s->read_bytes;
1102}
1103
093d3a20 1104static gboolean pty_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 1105{
1106 CharDriverState *chr = opaque;
1107 PtyCharDriver *s = chr->opaque;
093d3a20 1108 gsize size, len;
9bd7854e 1109 uint8_t buf[READ_BUF_LEN];
093d3a20 1110 GIOStatus status;
6f97dba0
AL		 1111
1112 len = sizeof(buf);
1113 if (len > s->read_bytes)
1114 len = s->read_bytes;
1115 if (len == 0)
093d3a20
AL		 1116 return FALSE;
1117 status = g_io_channel_read_chars(s->fd, (gchar *)buf, len, &size, NULL);
1118 if (status != G_IO_STATUS_NORMAL) {
6f97dba0 1119 pty_chr_state(chr, 0);
093d3a20
AL		 1120 return FALSE;
1121 } else {
6f97dba0 1122 pty_chr_state(chr, 1);
fa5efccb 1123 qemu_chr_be_write(chr, buf, size);
6f97dba0 1124 }
093d3a20 1125 return TRUE;
6f97dba0
AL		 1126}
1127
1128static void pty_chr_update_read_handler(CharDriverState *chr)
1129{
1130 PtyCharDriver *s = chr->opaque;
1131
093d3a20
AL		 1132 if (s->fd_tag) {
1133 g_source_remove(s->fd_tag);
1134 }
1135
1136 s->fd_tag = io_add_watch_poll(s->fd, pty_chr_read_poll, pty_chr_read, chr);
6f97dba0
AL		 1137 s->polling = 1;
1138 /*
1139 * Short timeout here: just need wait long enougth that qemu makes
1140 * it through the poll loop once. When reconnected we want a
1141 * short timeout so we notice it almost instantly. Otherwise
1142 * read() gives us -EIO instantly, making pty_chr_state() reset the
1143 * timeout to the normal (much longer) poll interval before the
1144 * timer triggers.
1145 */
8aa33caf 1146 pty_chr_rearm_timer(chr, 10);
6f97dba0
AL		 1147}
1148
1149static void pty_chr_state(CharDriverState *chr, int connected)
1150{
1151 PtyCharDriver *s = chr->opaque;
1152
1153 if (!connected) {
910b6368
PB		 1154 if (s->fd_tag) {
1155 g_source_remove(s->fd_tag);
1156 s->fd_tag = 0;
1157 }
6f97dba0
AL		 1158 s->connected = 0;
1159 s->polling = 0;
1160 /* (re-)connect poll interval for idle guests: once per second.
1161 * We check more frequently in case the guests sends data to
1162 * the virtual device linked to our pty. */
8aa33caf 1163 pty_chr_rearm_timer(chr, 1000);
6f97dba0
AL		 1164 } else {
1165 if (!s->connected)
fee204fd 1166 qemu_chr_be_generic_open(chr);
6f97dba0
AL		 1167 s->connected = 1;
1168 }
1169}
1170
6f97dba0
AL		 1171
1172static void pty_chr_close(struct CharDriverState *chr)
1173{
1174 PtyCharDriver *s = chr->opaque;
093d3a20 1175 int fd;
6f97dba0 1176
093d3a20
AL		 1177 if (s->fd_tag) {
1178 g_source_remove(s->fd_tag);
910b6368 1179 s->fd_tag = 0;
093d3a20
AL		 1180 }
1181 fd = g_io_channel_unix_get_fd(s->fd);
1182 g_io_channel_unref(s->fd);
1183 close(fd);
8aa33caf
AL		 1184 if (s->timer_tag) {
1185 g_source_remove(s->timer_tag);
910b6368 1186 s->timer_tag = 0;
8aa33caf 1187 }
7267c094 1188 g_free(s);
a425d23f 1189 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1190}
1191
e68c5958
GH		 1192static CharDriverState *qemu_chr_open_pty(const char *id,
1193 ChardevReturn *ret)
6f97dba0
AL		 1194{
1195 CharDriverState *chr;
1196 PtyCharDriver *s;
1197 struct termios tty;
e68c5958 1198 int master_fd, slave_fd;
c5e97233 1199#if defined(__OpenBSD__) || defined(__DragonFly__)
6f97dba0
AL		 1200 char pty_name[PATH_MAX];
1201#define q_ptsname(x) pty_name
1202#else
1203 char *pty_name = NULL;
1204#define q_ptsname(x) ptsname(x)
1205#endif
1206
a4e26048 1207 if (openpty(&master_fd, &slave_fd, pty_name, NULL, NULL) < 0) {
1f51470d 1208 return NULL;
6f97dba0
AL		 1209 }
1210
1211 /* Set raw attributes on the pty. */
c3b972c3 1212 tcgetattr(slave_fd, &tty);
6f97dba0
AL		 1213 cfmakeraw(&tty);
1214 tcsetattr(slave_fd, TCSAFLUSH, &tty);
1215 close(slave_fd);
1216
a4e26048
MA		 1217 chr = g_malloc0(sizeof(CharDriverState));
1218
e68c5958
GH		 1219 chr->filename = g_strdup_printf("pty:%s", q_ptsname(master_fd));
1220 ret->pty = g_strdup(q_ptsname(master_fd));
1221 ret->has_pty = true;
58650218 1222
e68c5958
GH		 1223 fprintf(stderr, "char device redirected to %s (label %s)\n",
1224 q_ptsname(master_fd), id);
6f97dba0 1225
a4e26048 1226 s = g_malloc0(sizeof(PtyCharDriver));
6f97dba0
AL		 1227 chr->opaque = s;
1228 chr->chr_write = pty_chr_write;
1229 chr->chr_update_read_handler = pty_chr_update_read_handler;
1230 chr->chr_close = pty_chr_close;
e6a87ed8 1231 chr->chr_add_watch = pty_chr_add_watch;
6f97dba0 1232
093d3a20 1233 s->fd = io_channel_from_fd(master_fd);
8aa33caf 1234 s->timer_tag = 0;
6f97dba0 1235
1f51470d 1236 return chr;
6f97dba0
AL		 1237}
1238
1239static void tty_serial_init(int fd, int speed,
1240 int parity, int data_bits, int stop_bits)
1241{
1242 struct termios tty;
1243 speed_t spd;
1244
1245#if 0
1246 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1247 speed, parity, data_bits, stop_bits);
1248#endif
1249 tcgetattr (fd, &tty);
1250
45eea13b
SW		 1251#define check_speed(val) if (speed <= val) { spd = B##val; break; }
1252 speed = speed * 10 / 11;
1253 do {
1254 check_speed(50);
1255 check_speed(75);
1256 check_speed(110);
1257 check_speed(134);
1258 check_speed(150);
1259 check_speed(200);
1260 check_speed(300);
1261 check_speed(600);
1262 check_speed(1200);
1263 check_speed(1800);
1264 check_speed(2400);
1265 check_speed(4800);
1266 check_speed(9600);
1267 check_speed(19200);
1268 check_speed(38400);
1269 /* Non-Posix values follow. They may be unsupported on some systems. */
1270 check_speed(57600);
1271 check_speed(115200);
1272#ifdef B230400
1273 check_speed(230400);
1274#endif
1275#ifdef B460800
1276 check_speed(460800);
1277#endif
1278#ifdef B500000
1279 check_speed(500000);
1280#endif
1281#ifdef B576000
1282 check_speed(576000);
1283#endif
1284#ifdef B921600
1285 check_speed(921600);
1286#endif
1287#ifdef B1000000
1288 check_speed(1000000);
1289#endif
1290#ifdef B1152000
1291 check_speed(1152000);
1292#endif
1293#ifdef B1500000
1294 check_speed(1500000);
1295#endif
1296#ifdef B2000000
1297 check_speed(2000000);
1298#endif
1299#ifdef B2500000
1300 check_speed(2500000);
1301#endif
1302#ifdef B3000000
1303 check_speed(3000000);
1304#endif
1305#ifdef B3500000
1306 check_speed(3500000);
1307#endif
1308#ifdef B4000000
1309 check_speed(4000000);
1310#endif
6f97dba0 1311 spd = B115200;
45eea13b 1312 } while (0);
6f97dba0
AL		 1313
1314 cfsetispeed(&tty, spd);
1315 cfsetospeed(&tty, spd);
1316
1317 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1318 |INLCR|IGNCR|ICRNL|IXON);
1319 tty.c_oflag |= OPOST;
1320 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1321 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1322 switch(data_bits) {
1323 default:
1324 case 8:
1325 tty.c_cflag |= CS8;
1326 break;
1327 case 7:
1328 tty.c_cflag |= CS7;
1329 break;
1330 case 6:
1331 tty.c_cflag |= CS6;
1332 break;
1333 case 5:
1334 tty.c_cflag |= CS5;
1335 break;
1336 }
1337 switch(parity) {
1338 default:
1339 case 'N':
1340 break;
1341 case 'E':
1342 tty.c_cflag |= PARENB;
1343 break;
1344 case 'O':
1345 tty.c_cflag |= PARENB | PARODD;
1346 break;
1347 }
1348 if (stop_bits == 2)
1349 tty.c_cflag |= CSTOPB;
1350
1351 tcsetattr (fd, TCSANOW, &tty);
1352}
1353
1354static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1355{
1356 FDCharDriver *s = chr->opaque;
1357
1358 switch(cmd) {
1359 case CHR_IOCTL_SERIAL_SET_PARAMS:
1360 {
1361 QEMUSerialSetParams *ssp = arg;
a29753f8
AL		 1362 tty_serial_init(g_io_channel_unix_get_fd(s->fd_in),
1363 ssp->speed, ssp->parity,
6f97dba0
AL		 1364 ssp->data_bits, ssp->stop_bits);
1365 }
1366 break;
1367 case CHR_IOCTL_SERIAL_SET_BREAK:
1368 {
1369 int enable = *(int *)arg;
a29753f8
AL		 1370 if (enable) {
1371 tcsendbreak(g_io_channel_unix_get_fd(s->fd_in), 1);
1372 }
6f97dba0
AL		 1373 }
1374 break;
1375 case CHR_IOCTL_SERIAL_GET_TIOCM:
1376 {
1377 int sarg = 0;
1378 int *targ = (int *)arg;
a29753f8 1379 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &sarg);
6f97dba0 1380 *targ = 0;
b4abdfa4 1381 if (sarg & TIOCM_CTS)
6f97dba0 1382 *targ |= CHR_TIOCM_CTS;
b4abdfa4 1383 if (sarg & TIOCM_CAR)
6f97dba0 1384 *targ |= CHR_TIOCM_CAR;
b4abdfa4 1385 if (sarg & TIOCM_DSR)
6f97dba0 1386 *targ |= CHR_TIOCM_DSR;
b4abdfa4 1387 if (sarg & TIOCM_RI)
6f97dba0 1388 *targ |= CHR_TIOCM_RI;
b4abdfa4 1389 if (sarg & TIOCM_DTR)
6f97dba0 1390 *targ |= CHR_TIOCM_DTR;
b4abdfa4 1391 if (sarg & TIOCM_RTS)
6f97dba0
AL		 1392 *targ |= CHR_TIOCM_RTS;
1393 }
1394 break;
1395 case CHR_IOCTL_SERIAL_SET_TIOCM:
1396 {
1397 int sarg = *(int *)arg;
1398 int targ = 0;
a29753f8 1399 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &targ);
b4abdfa4
AJ		 1400 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1401 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1402 if (sarg & CHR_TIOCM_CTS)
1403 targ |= TIOCM_CTS;
1404 if (sarg & CHR_TIOCM_CAR)
1405 targ |= TIOCM_CAR;
1406 if (sarg & CHR_TIOCM_DSR)
1407 targ |= TIOCM_DSR;
1408 if (sarg & CHR_TIOCM_RI)
1409 targ |= TIOCM_RI;
1410 if (sarg & CHR_TIOCM_DTR)
6f97dba0 1411 targ |= TIOCM_DTR;
b4abdfa4 1412 if (sarg & CHR_TIOCM_RTS)
6f97dba0 1413 targ |= TIOCM_RTS;
a29753f8 1414 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMSET, &targ);
6f97dba0
AL		 1415 }
1416 break;
1417 default:
1418 return -ENOTSUP;
1419 }
1420 return 0;
1421}
1422
4266a134
DA		 1423static void qemu_chr_close_tty(CharDriverState *chr)
1424{
1425 FDCharDriver *s = chr->opaque;
1426 int fd = -1;
1427
1428 if (s) {
a29753f8 1429 fd = g_io_channel_unix_get_fd(s->fd_in);
4266a134
DA		 1430 }
1431
1432 fd_chr_close(chr);
1433
1434 if (fd >= 0) {
1435 close(fd);
1436 }
1437}
1438
d59044ef
GH		 1439static CharDriverState *qemu_chr_open_tty_fd(int fd)
1440{
1441 CharDriverState *chr;
1442
1443 tty_serial_init(fd, 115200, 'N', 8, 1);
1444 chr = qemu_chr_open_fd(fd, fd);
1445 chr->chr_ioctl = tty_serial_ioctl;
1446 chr->chr_close = qemu_chr_close_tty;
1447 return chr;
1448}
6f97dba0
AL		 1449#endif /* __linux__ || __sun__ */
1450
1451#if defined(__linux__)
e551498e
GH		 1452
1453#define HAVE_CHARDEV_PARPORT 1
1454
6f97dba0
AL		 1455typedef struct {
1456 int fd;
1457 int mode;
1458} ParallelCharDriver;
1459
1460static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1461{
1462 if (s->mode != mode) {
1463 int m = mode;
1464 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1465 return 0;
1466 s->mode = mode;
1467 }
1468 return 1;
1469}
1470
1471static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1472{
1473 ParallelCharDriver *drv = chr->opaque;
1474 int fd = drv->fd;
1475 uint8_t b;
1476
1477 switch(cmd) {
1478 case CHR_IOCTL_PP_READ_DATA:
1479 if (ioctl(fd, PPRDATA, &b) < 0)
1480 return -ENOTSUP;
1481 *(uint8_t *)arg = b;
1482 break;
1483 case CHR_IOCTL_PP_WRITE_DATA:
1484 b = *(uint8_t *)arg;
1485 if (ioctl(fd, PPWDATA, &b) < 0)
1486 return -ENOTSUP;
1487 break;
1488 case CHR_IOCTL_PP_READ_CONTROL:
1489 if (ioctl(fd, PPRCONTROL, &b) < 0)
1490 return -ENOTSUP;
1491 /* Linux gives only the lowest bits, and no way to know data
1492 direction! For better compatibility set the fixed upper
1493 bits. */
1494 *(uint8_t *)arg = b | 0xc0;
1495 break;
1496 case CHR_IOCTL_PP_WRITE_CONTROL:
1497 b = *(uint8_t *)arg;
1498 if (ioctl(fd, PPWCONTROL, &b) < 0)
1499 return -ENOTSUP;
1500 break;
1501 case CHR_IOCTL_PP_READ_STATUS:
1502 if (ioctl(fd, PPRSTATUS, &b) < 0)
1503 return -ENOTSUP;
1504 *(uint8_t *)arg = b;
1505 break;
1506 case CHR_IOCTL_PP_DATA_DIR:
1507 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1508 return -ENOTSUP;
1509 break;
1510 case CHR_IOCTL_PP_EPP_READ_ADDR:
1511 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1512 struct ParallelIOArg *parg = arg;
1513 int n = read(fd, parg->buffer, parg->count);
1514 if (n != parg->count) {
1515 return -EIO;
1516 }
1517 }
1518 break;
1519 case CHR_IOCTL_PP_EPP_READ:
1520 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1521 struct ParallelIOArg *parg = arg;
1522 int n = read(fd, parg->buffer, parg->count);
1523 if (n != parg->count) {
1524 return -EIO;
1525 }
1526 }
1527 break;
1528 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1529 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1530 struct ParallelIOArg *parg = arg;
1531 int n = write(fd, parg->buffer, parg->count);
1532 if (n != parg->count) {
1533 return -EIO;
1534 }
1535 }
1536 break;
1537 case CHR_IOCTL_PP_EPP_WRITE:
1538 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1539 struct ParallelIOArg *parg = arg;
1540 int n = write(fd, parg->buffer, parg->count);
1541 if (n != parg->count) {
1542 return -EIO;
1543 }
1544 }
1545 break;
1546 default:
1547 return -ENOTSUP;
1548 }
1549 return 0;
1550}
1551
1552static void pp_close(CharDriverState *chr)
1553{
1554 ParallelCharDriver *drv = chr->opaque;
1555 int fd = drv->fd;
1556
1557 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1558 ioctl(fd, PPRELEASE);
1559 close(fd);
7267c094 1560 g_free(drv);
a425d23f 1561 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1562}
1563
88a946d3 1564static CharDriverState *qemu_chr_open_pp_fd(int fd)
6f97dba0
AL		 1565{
1566 CharDriverState *chr;
1567 ParallelCharDriver *drv;
6f97dba0
AL		 1568
1569 if (ioctl(fd, PPCLAIM) < 0) {
1570 close(fd);
1f51470d 1571 return NULL;
6f97dba0
AL		 1572 }
1573
7267c094 1574 drv = g_malloc0(sizeof(ParallelCharDriver));
6f97dba0
AL		 1575 drv->fd = fd;
1576 drv->mode = IEEE1284_MODE_COMPAT;
1577
7267c094 1578 chr = g_malloc0(sizeof(CharDriverState));
6f97dba0
AL		 1579 chr->chr_write = null_chr_write;
1580 chr->chr_ioctl = pp_ioctl;
1581 chr->chr_close = pp_close;
1582 chr->opaque = drv;
1583
fee204fd 1584 qemu_chr_be_generic_open(chr);
6f97dba0 1585
1f51470d 1586 return chr;
6f97dba0
AL		 1587}
1588#endif /* __linux__ */
1589
a167ba50 1590#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
e551498e
GH		 1591
1592#define HAVE_CHARDEV_PARPORT 1
1593
6972f935
BS		 1594static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1595{
e0efb993 1596 int fd = (int)(intptr_t)chr->opaque;
6972f935
BS		 1597 uint8_t b;
1598
1599 switch(cmd) {
1600 case CHR_IOCTL_PP_READ_DATA:
1601 if (ioctl(fd, PPIGDATA, &b) < 0)
1602 return -ENOTSUP;
1603 *(uint8_t *)arg = b;
1604 break;
1605 case CHR_IOCTL_PP_WRITE_DATA:
1606 b = *(uint8_t *)arg;
1607 if (ioctl(fd, PPISDATA, &b) < 0)
1608 return -ENOTSUP;
1609 break;
1610 case CHR_IOCTL_PP_READ_CONTROL:
1611 if (ioctl(fd, PPIGCTRL, &b) < 0)
1612 return -ENOTSUP;
1613 *(uint8_t *)arg = b;
1614 break;
1615 case CHR_IOCTL_PP_WRITE_CONTROL:
1616 b = *(uint8_t *)arg;
1617 if (ioctl(fd, PPISCTRL, &b) < 0)
1618 return -ENOTSUP;
1619 break;
1620 case CHR_IOCTL_PP_READ_STATUS:
1621 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1622 return -ENOTSUP;
1623 *(uint8_t *)arg = b;
1624 break;
1625 default:
1626 return -ENOTSUP;
1627 }
1628 return 0;
1629}
1630
88a946d3 1631static CharDriverState *qemu_chr_open_pp_fd(int fd)
6972f935
BS		 1632{
1633 CharDriverState *chr;
6972f935 1634
7267c094 1635 chr = g_malloc0(sizeof(CharDriverState));
e0efb993 1636 chr->opaque = (void *)(intptr_t)fd;
6972f935
BS		 1637 chr->chr_write = null_chr_write;
1638 chr->chr_ioctl = pp_ioctl;
1f51470d 1639 return chr;
6972f935
BS		 1640}
1641#endif
1642
6f97dba0
AL		 1643#else /* _WIN32 */
1644
1645typedef struct {
1646 int max_size;
1647 HANDLE hcom, hrecv, hsend;
1648 OVERLAPPED orecv, osend;
1649 BOOL fpipe;
1650 DWORD len;
1651} WinCharState;
1652
db418a0a
FC		 1653typedef struct {
1654 HANDLE hStdIn;
1655 HANDLE hInputReadyEvent;
1656 HANDLE hInputDoneEvent;
1657 HANDLE hInputThread;
1658 uint8_t win_stdio_buf;
1659} WinStdioCharState;
1660
6f97dba0
AL		 1661#define NSENDBUF 2048
1662#define NRECVBUF 2048
1663#define MAXCONNECT 1
1664#define NTIMEOUT 5000
1665
1666static int win_chr_poll(void *opaque);
1667static int win_chr_pipe_poll(void *opaque);
1668
1669static void win_chr_close(CharDriverState *chr)
1670{
1671 WinCharState *s = chr->opaque;
1672
1673 if (s->hsend) {
1674 CloseHandle(s->hsend);
1675 s->hsend = NULL;
1676 }
1677 if (s->hrecv) {
1678 CloseHandle(s->hrecv);
1679 s->hrecv = NULL;
1680 }
1681 if (s->hcom) {
1682 CloseHandle(s->hcom);
1683 s->hcom = NULL;
1684 }
1685 if (s->fpipe)
1686 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1687 else
1688 qemu_del_polling_cb(win_chr_poll, chr);
793cbfb5 1689
a425d23f 1690 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 1691}
1692
1693static int win_chr_init(CharDriverState *chr, const char *filename)
1694{
1695 WinCharState *s = chr->opaque;
1696 COMMCONFIG comcfg;
1697 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1698 COMSTAT comstat;
1699 DWORD size;
1700 DWORD err;
1701
1702 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1703 if (!s->hsend) {
1704 fprintf(stderr, "Failed CreateEvent\n");
1705 goto fail;
1706 }
1707 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1708 if (!s->hrecv) {
1709 fprintf(stderr, "Failed CreateEvent\n");
1710 goto fail;
1711 }
1712
1713 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1714 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1715 if (s->hcom == INVALID_HANDLE_VALUE) {
1716 fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
1717 s->hcom = NULL;
1718 goto fail;
1719 }
1720
1721 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
1722 fprintf(stderr, "Failed SetupComm\n");
1723 goto fail;
1724 }
1725
1726 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1727 size = sizeof(COMMCONFIG);
1728 GetDefaultCommConfig(filename, &comcfg, &size);
1729 comcfg.dcb.DCBlength = sizeof(DCB);
1730 CommConfigDialog(filename, NULL, &comcfg);
1731
1732 if (!SetCommState(s->hcom, &comcfg.dcb)) {
1733 fprintf(stderr, "Failed SetCommState\n");
1734 goto fail;
1735 }
1736
1737 if (!SetCommMask(s->hcom, EV_ERR)) {
1738 fprintf(stderr, "Failed SetCommMask\n");
1739 goto fail;
1740 }
1741
1742 cto.ReadIntervalTimeout = MAXDWORD;
1743 if (!SetCommTimeouts(s->hcom, &cto)) {
1744 fprintf(stderr, "Failed SetCommTimeouts\n");
1745 goto fail;
1746 }
1747
1748 if (!ClearCommError(s->hcom, &err, &comstat)) {
1749 fprintf(stderr, "Failed ClearCommError\n");
1750 goto fail;
1751 }
1752 qemu_add_polling_cb(win_chr_poll, chr);
1753 return 0;
1754
1755 fail:
1756 win_chr_close(chr);
1757 return -1;
1758}
1759
1760static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1761{
1762 WinCharState *s = chr->opaque;
1763 DWORD len, ret, size, err;
1764
1765 len = len1;
1766 ZeroMemory(&s->osend, sizeof(s->osend));
1767 s->osend.hEvent = s->hsend;
1768 while (len > 0) {
1769 if (s->hsend)
1770 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1771 else
1772 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1773 if (!ret) {
1774 err = GetLastError();
1775 if (err == ERROR_IO_PENDING) {
1776 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1777 if (ret) {
1778 buf += size;
1779 len -= size;
1780 } else {
1781 break;
1782 }
1783 } else {
1784 break;
1785 }
1786 } else {
1787 buf += size;
1788 len -= size;
1789 }
1790 }
1791 return len1 - len;
1792}
1793
1794static int win_chr_read_poll(CharDriverState *chr)
1795{
1796 WinCharState *s = chr->opaque;
1797
909cda12 1798 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 1799 return s->max_size;
1800}
1801
1802static void win_chr_readfile(CharDriverState *chr)
1803{
1804 WinCharState *s = chr->opaque;
1805 int ret, err;
9bd7854e 1806 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 1807 DWORD size;
1808
1809 ZeroMemory(&s->orecv, sizeof(s->orecv));
1810 s->orecv.hEvent = s->hrecv;
1811 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
1812 if (!ret) {
1813 err = GetLastError();
1814 if (err == ERROR_IO_PENDING) {
1815 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
1816 }
1817 }
1818
1819 if (size > 0) {
fa5efccb 1820 qemu_chr_be_write(chr, buf, size);
6f97dba0
AL		 1821 }
1822}
1823
1824static void win_chr_read(CharDriverState *chr)
1825{
1826 WinCharState *s = chr->opaque;
1827
1828 if (s->len > s->max_size)
1829 s->len = s->max_size;
1830 if (s->len == 0)
1831 return;
1832
1833 win_chr_readfile(chr);
1834}
1835
1836static int win_chr_poll(void *opaque)
1837{
1838 CharDriverState *chr = opaque;
1839 WinCharState *s = chr->opaque;
1840 COMSTAT status;
1841 DWORD comerr;
1842
1843 ClearCommError(s->hcom, &comerr, &status);
1844 if (status.cbInQue > 0) {
1845 s->len = status.cbInQue;
1846 win_chr_read_poll(chr);
1847 win_chr_read(chr);
1848 return 1;
1849 }
1850 return 0;
1851}
1852
d59044ef 1853static CharDriverState *qemu_chr_open_win_path(const char *filename)
6f97dba0
AL		 1854{
1855 CharDriverState *chr;
1856 WinCharState *s;
1857
7267c094
AL		 1858 chr = g_malloc0(sizeof(CharDriverState));
1859 s = g_malloc0(sizeof(WinCharState));
6f97dba0
AL		 1860 chr->opaque = s;
1861 chr->chr_write = win_chr_write;
1862 chr->chr_close = win_chr_close;
1863
1864 if (win_chr_init(chr, filename) < 0) {
2e02e18b
SW		 1865 g_free(s);
1866 g_free(chr);
1f51470d 1867 return NULL;
6f97dba0 1868 }
fee204fd 1869 qemu_chr_be_generic_open(chr);
1f51470d 1870 return chr;
6f97dba0
AL		 1871}
1872
1873static int win_chr_pipe_poll(void *opaque)
1874{
1875 CharDriverState *chr = opaque;
1876 WinCharState *s = chr->opaque;
1877 DWORD size;
1878
1879 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
1880 if (size > 0) {
1881 s->len = size;
1882 win_chr_read_poll(chr);
1883 win_chr_read(chr);
1884 return 1;
1885 }
1886 return 0;
1887}
1888
1889static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
1890{
1891 WinCharState *s = chr->opaque;
1892 OVERLAPPED ov;
1893 int ret;
1894 DWORD size;
1895 char openname[256];
1896
1897 s->fpipe = TRUE;
1898
1899 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1900 if (!s->hsend) {
1901 fprintf(stderr, "Failed CreateEvent\n");
1902 goto fail;
1903 }
1904 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1905 if (!s->hrecv) {
1906 fprintf(stderr, "Failed CreateEvent\n");
1907 goto fail;
1908 }
1909
1910 snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
1911 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
1912 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
1913 PIPE_WAIT,
1914 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
1915 if (s->hcom == INVALID_HANDLE_VALUE) {
1916 fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
1917 s->hcom = NULL;
1918 goto fail;
1919 }
1920
1921 ZeroMemory(&ov, sizeof(ov));
1922 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
1923 ret = ConnectNamedPipe(s->hcom, &ov);
1924 if (ret) {
1925 fprintf(stderr, "Failed ConnectNamedPipe\n");
1926 goto fail;
1927 }
1928
1929 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
1930 if (!ret) {
1931 fprintf(stderr, "Failed GetOverlappedResult\n");
1932 if (ov.hEvent) {
1933 CloseHandle(ov.hEvent);
1934 ov.hEvent = NULL;
1935 }
1936 goto fail;
1937 }
1938
1939 if (ov.hEvent) {
1940 CloseHandle(ov.hEvent);
1941 ov.hEvent = NULL;
1942 }
1943 qemu_add_polling_cb(win_chr_pipe_poll, chr);
1944 return 0;
1945
1946 fail:
1947 win_chr_close(chr);
1948 return -1;
1949}
1950
1951
548cbb36 1952static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
6f97dba0 1953{
548cbb36 1954 const char *filename = opts->device;
6f97dba0
AL		 1955 CharDriverState *chr;
1956 WinCharState *s;
1957
7267c094
AL		 1958 chr = g_malloc0(sizeof(CharDriverState));
1959 s = g_malloc0(sizeof(WinCharState));
6f97dba0
AL		 1960 chr->opaque = s;
1961 chr->chr_write = win_chr_write;
1962 chr->chr_close = win_chr_close;
1963
1964 if (win_chr_pipe_init(chr, filename) < 0) {
2e02e18b
SW		 1965 g_free(s);
1966 g_free(chr);
1f51470d 1967 return NULL;
6f97dba0 1968 }
fee204fd 1969 qemu_chr_be_generic_open(chr);
1f51470d 1970 return chr;
6f97dba0
AL		 1971}
1972
1f51470d 1973static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
6f97dba0
AL		 1974{
1975 CharDriverState *chr;
1976 WinCharState *s;
1977
7267c094
AL		 1978 chr = g_malloc0(sizeof(CharDriverState));
1979 s = g_malloc0(sizeof(WinCharState));
6f97dba0
AL		 1980 s->hcom = fd_out;
1981 chr->opaque = s;
1982 chr->chr_write = win_chr_write;
fee204fd 1983 qemu_chr_be_generic_open(chr);
1f51470d 1984 return chr;
6f97dba0
AL		 1985}
1986
d9ac374f 1987static CharDriverState *qemu_chr_open_win_con(void)
6f97dba0 1988{
1f51470d 1989 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
6f97dba0
AL		 1990}
1991
db418a0a
FC		 1992static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
1993{
1994 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
1995 DWORD dwSize;
1996 int len1;
1997
1998 len1 = len;
1999
2000 while (len1 > 0) {
2001 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
2002 break;
2003 }
2004 buf += dwSize;
2005 len1 -= dwSize;
2006 }
2007
2008 return len - len1;
2009}
2010
2011static void win_stdio_wait_func(void *opaque)
2012{
2013 CharDriverState *chr = opaque;
2014 WinStdioCharState *stdio = chr->opaque;
2015 INPUT_RECORD buf[4];
2016 int ret;
2017 DWORD dwSize;
2018 int i;
2019
2020 ret = ReadConsoleInput(stdio->hStdIn, buf, sizeof(buf) / sizeof(*buf),
2021 &dwSize);
2022
2023 if (!ret) {
2024 /* Avoid error storm */
2025 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2026 return;
2027 }
2028
2029 for (i = 0; i < dwSize; i++) {
2030 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
2031
2032 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
2033 int j;
2034 if (kev->uChar.AsciiChar != 0) {
2035 for (j = 0; j < kev->wRepeatCount; j++) {
2036 if (qemu_chr_be_can_write(chr)) {
2037 uint8_t c = kev->uChar.AsciiChar;
2038 qemu_chr_be_write(chr, &c, 1);
2039 }
2040 }
2041 }
2042 }
2043 }
2044}
2045
2046static DWORD WINAPI win_stdio_thread(LPVOID param)
2047{
2048 CharDriverState *chr = param;
2049 WinStdioCharState *stdio = chr->opaque;
2050 int ret;
2051 DWORD dwSize;
2052
2053 while (1) {
2054
2055 /* Wait for one byte */
2056 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
2057
2058 /* Exit in case of error, continue if nothing read */
2059 if (!ret) {
2060 break;
2061 }
2062 if (!dwSize) {
2063 continue;
2064 }
2065
2066 /* Some terminal emulator returns \r\n for Enter, just pass \n */
2067 if (stdio->win_stdio_buf == '\r') {
2068 continue;
2069 }
2070
2071 /* Signal the main thread and wait until the byte was eaten */
2072 if (!SetEvent(stdio->hInputReadyEvent)) {
2073 break;
2074 }
2075 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
2076 != WAIT_OBJECT_0) {
2077 break;
2078 }
2079 }
2080
2081 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2082 return 0;
2083}
2084
2085static void win_stdio_thread_wait_func(void *opaque)
2086{
2087 CharDriverState *chr = opaque;
2088 WinStdioCharState *stdio = chr->opaque;
2089
2090 if (qemu_chr_be_can_write(chr)) {
2091 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
2092 }
2093
2094 SetEvent(stdio->hInputDoneEvent);
2095}
2096
2097static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
2098{
2099 WinStdioCharState *stdio = chr->opaque;
2100 DWORD dwMode = 0;
2101
2102 GetConsoleMode(stdio->hStdIn, &dwMode);
2103
2104 if (echo) {
2105 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
2106 } else {
2107 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
2108 }
2109}
2110
2111static void win_stdio_close(CharDriverState *chr)
2112{
2113 WinStdioCharState *stdio = chr->opaque;
2114
2115 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
2116 CloseHandle(stdio->hInputReadyEvent);
2117 }
2118 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
2119 CloseHandle(stdio->hInputDoneEvent);
2120 }
2121 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
2122 TerminateThread(stdio->hInputThread, 0);
2123 }
2124
2125 g_free(chr->opaque);
2126 g_free(chr);
db418a0a
FC		 2127}
2128
7c358031 2129static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
db418a0a
FC		 2130{
2131 CharDriverState *chr;
2132 WinStdioCharState *stdio;
2133 DWORD dwMode;
2134 int is_console = 0;
2135
db418a0a
FC		 2136 chr = g_malloc0(sizeof(CharDriverState));
2137 stdio = g_malloc0(sizeof(WinStdioCharState));
2138
2139 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
2140 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
2141 fprintf(stderr, "cannot open stdio: invalid handle\n");
2142 exit(1);
2143 }
2144
2145 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
2146
2147 chr->opaque = stdio;
2148 chr->chr_write = win_stdio_write;
2149 chr->chr_close = win_stdio_close;
2150
ed7a1540
AL		 2151 if (is_console) {
2152 if (qemu_add_wait_object(stdio->hStdIn,
2153 win_stdio_wait_func, chr)) {
2154 fprintf(stderr, "qemu_add_wait_object: failed\n");
2155 }
2156 } else {
2157 DWORD dwId;
2158
2159 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2160 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2161 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
2162 chr, 0, &dwId);
2163
2164 if (stdio->hInputThread == INVALID_HANDLE_VALUE
2165 || stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
2166 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
2167 fprintf(stderr, "cannot create stdio thread or event\n");
2168 exit(1);
2169 }
2170 if (qemu_add_wait_object(stdio->hInputReadyEvent,
2171 win_stdio_thread_wait_func, chr)) {
2172 fprintf(stderr, "qemu_add_wait_object: failed\n");
db418a0a
FC		 2173 }
2174 }
2175
2176 dwMode |= ENABLE_LINE_INPUT;
2177
ed7a1540 2178 if (is_console) {
db418a0a
FC		 2179 /* set the terminal in raw mode */
2180 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2181 dwMode |= ENABLE_PROCESSED_INPUT;
2182 }
2183
2184 SetConsoleMode(stdio->hStdIn, dwMode);
2185
2186 chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
2187 qemu_chr_fe_set_echo(chr, false);
2188
1f51470d 2189 return chr;
db418a0a 2190}
6f97dba0
AL		 2191#endif /* !_WIN32 */
2192
5ab8211b 2193
6f97dba0
AL		 2194/***********************************************************/
2195/* UDP Net console */
2196
2197typedef struct {
2198 int fd;
76a9644b
AL		 2199 GIOChannel *chan;
2200 guint tag;
9bd7854e 2201 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2202 int bufcnt;
2203 int bufptr;
2204 int max_size;
2205} NetCharDriver;
2206
2207static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2208{
2209 NetCharDriver *s = chr->opaque;
76a9644b
AL		 2210 gsize bytes_written;
2211 GIOStatus status;
2212
2213 status = g_io_channel_write_chars(s->chan, (const gchar *)buf, len, &bytes_written, NULL);
2214 if (status == G_IO_STATUS_EOF) {
2215 return 0;
2216 } else if (status != G_IO_STATUS_NORMAL) {
2217 return -1;
2218 }
6f97dba0 2219
76a9644b 2220 return bytes_written;
6f97dba0
AL		 2221}
2222
2223static int udp_chr_read_poll(void *opaque)
2224{
2225 CharDriverState *chr = opaque;
2226 NetCharDriver *s = chr->opaque;
2227
909cda12 2228 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2229
2230 /* If there were any stray characters in the queue process them
2231 * first
2232 */
2233 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
fa5efccb 2234 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
6f97dba0 2235 s->bufptr++;
909cda12 2236 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2237 }
2238 return s->max_size;
2239}
2240
76a9644b 2241static gboolean udp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 2242{
2243 CharDriverState *chr = opaque;
2244 NetCharDriver *s = chr->opaque;
76a9644b
AL		 2245 gsize bytes_read = 0;
2246 GIOStatus status;
6f97dba0
AL		 2247
2248 if (s->max_size == 0)
76a9644b
AL		 2249 return FALSE;
2250 status = g_io_channel_read_chars(s->chan, (gchar *)s->buf, sizeof(s->buf),
2251 &bytes_read, NULL);
2252 s->bufcnt = bytes_read;
6f97dba0 2253 s->bufptr = s->bufcnt;
76a9644b
AL		 2254 if (status != G_IO_STATUS_NORMAL) {
2255 return FALSE;
2256 }
6f97dba0
AL		 2257
2258 s->bufptr = 0;
2259 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
fa5efccb 2260 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
6f97dba0 2261 s->bufptr++;
909cda12 2262 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0 2263 }
76a9644b
AL		 2264
2265 return TRUE;
6f97dba0
AL		 2266}
2267
2268static void udp_chr_update_read_handler(CharDriverState *chr)
2269{
2270 NetCharDriver *s = chr->opaque;
2271
76a9644b
AL		 2272 if (s->tag) {
2273 g_source_remove(s->tag);
2274 s->tag = 0;
2275 }
2276
2277 if (s->chan) {
2278 s->tag = io_add_watch_poll(s->chan, udp_chr_read_poll, udp_chr_read, chr);
6f97dba0
AL		 2279 }
2280}
2281
819f56b7
AL		 2282static void udp_chr_close(CharDriverState *chr)
2283{
2284 NetCharDriver *s = chr->opaque;
76a9644b
AL		 2285 if (s->tag) {
2286 g_source_remove(s->tag);
910b6368 2287 s->tag = 0;
76a9644b
AL		 2288 }
2289 if (s->chan) {
2290 g_io_channel_unref(s->chan);
819f56b7
AL		 2291 closesocket(s->fd);
2292 }
7267c094 2293 g_free(s);
a425d23f 2294 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
819f56b7
AL		 2295}
2296
3ecc059d 2297static CharDriverState *qemu_chr_open_udp_fd(int fd)
6f97dba0
AL		 2298{
2299 CharDriverState *chr = NULL;
2300 NetCharDriver *s = NULL;
6f97dba0 2301
7267c094
AL		 2302 chr = g_malloc0(sizeof(CharDriverState));
2303 s = g_malloc0(sizeof(NetCharDriver));
6f97dba0 2304
6f97dba0 2305 s->fd = fd;
76a9644b 2306 s->chan = io_channel_from_socket(s->fd);
6f97dba0
AL		 2307 s->bufcnt = 0;
2308 s->bufptr = 0;
2309 chr->opaque = s;
2310 chr->chr_write = udp_chr_write;
2311 chr->chr_update_read_handler = udp_chr_update_read_handler;
819f56b7 2312 chr->chr_close = udp_chr_close;
1f51470d 2313 return chr;
3ecc059d 2314}
6f97dba0 2315
3ecc059d
GH		 2316static CharDriverState *qemu_chr_open_udp(QemuOpts *opts)
2317{
2318 Error *local_err = NULL;
2319 int fd = -1;
2320
2321 fd = inet_dgram_opts(opts, &local_err);
2322 if (fd < 0) {
2323 return NULL;
6e1db57b 2324 }
3ecc059d 2325 return qemu_chr_open_udp_fd(fd);
6f97dba0
AL		 2326}
2327
2328/***********************************************************/
2329/* TCP Net console */
2330
2331typedef struct {
2ea5a7af
AL		 2332
2333 GIOChannel *chan, *listen_chan;
2334 guint tag, listen_tag;
6f97dba0
AL		 2335 int fd, listen_fd;
2336 int connected;
2337 int max_size;
2338 int do_telnetopt;
2339 int do_nodelay;
2340 int is_unix;
7d174059 2341 int msgfd;
6f97dba0
AL		 2342} TCPCharDriver;
2343
2ea5a7af 2344static gboolean tcp_chr_accept(GIOChannel *chan, GIOCondition cond, void *opaque);
6f97dba0
AL		 2345
2346static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2347{
2348 TCPCharDriver *s = chr->opaque;
2349 if (s->connected) {
684a096e 2350 return io_channel_send(s->chan, buf, len);
455aa1e0 2351 } else {
6db0fdce 2352 /* XXX: indicate an error ? */
455aa1e0 2353 return len;
6f97dba0
AL		 2354 }
2355}
2356
2357static int tcp_chr_read_poll(void *opaque)
2358{
2359 CharDriverState *chr = opaque;
2360 TCPCharDriver *s = chr->opaque;
2361 if (!s->connected)
2362 return 0;
909cda12 2363 s->max_size = qemu_chr_be_can_write(chr);
6f97dba0
AL		 2364 return s->max_size;
2365}
2366
2367#define IAC 255
2368#define IAC_BREAK 243
2369static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
2370 TCPCharDriver *s,
2371 uint8_t *buf, int *size)
2372{
2373 /* Handle any telnet client's basic IAC options to satisfy char by
2374 * char mode with no echo. All IAC options will be removed from
2375 * the buf and the do_telnetopt variable will be used to track the
2376 * state of the width of the IAC information.
2377 *
2378 * IAC commands come in sets of 3 bytes with the exception of the
2379 * "IAC BREAK" command and the double IAC.
2380 */
2381
2382 int i;
2383 int j = 0;
2384
2385 for (i = 0; i < *size; i++) {
2386 if (s->do_telnetopt > 1) {
2387 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2388 /* Double IAC means send an IAC */
2389 if (j != i)
2390 buf[j] = buf[i];
2391 j++;
2392 s->do_telnetopt = 1;
2393 } else {
2394 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2395 /* Handle IAC break commands by sending a serial break */
a425d23f 2396 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
6f97dba0
AL		 2397 s->do_telnetopt++;
2398 }
2399 s->do_telnetopt++;
2400 }
2401 if (s->do_telnetopt >= 4) {
2402 s->do_telnetopt = 1;
2403 }
2404 } else {
2405 if ((unsigned char)buf[i] == IAC) {
2406 s->do_telnetopt = 2;
2407 } else {
2408 if (j != i)
2409 buf[j] = buf[i];
2410 j++;
2411 }
2412 }
2413 }
2414 *size = j;
2415}
2416
7d174059
MM		 2417static int tcp_get_msgfd(CharDriverState *chr)
2418{
2419 TCPCharDriver *s = chr->opaque;
e53f27b9
PB		 2420 int fd = s->msgfd;
2421 s->msgfd = -1;
2422 return fd;
7d174059
MM		 2423}
2424
73bcc2ac 2425#ifndef _WIN32
7d174059
MM		 2426static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
2427{
2428 TCPCharDriver *s = chr->opaque;
2429 struct cmsghdr *cmsg;
2430
2431 for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
2432 int fd;
2433
2434 if (cmsg->cmsg_len != CMSG_LEN(sizeof(int)) ||
2435 cmsg->cmsg_level != SOL_SOCKET ||
2436 cmsg->cmsg_type != SCM_RIGHTS)
2437 continue;
2438
2439 fd = *((int *)CMSG_DATA(cmsg));
2440 if (fd < 0)
2441 continue;
2442
9b938c72
SH		 2443 /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
2444 qemu_set_block(fd);
2445
06138651
CB		 2446#ifndef MSG_CMSG_CLOEXEC
2447 qemu_set_cloexec(fd);
2448#endif
7d174059
MM		 2449 if (s->msgfd != -1)
2450 close(s->msgfd);
2451 s->msgfd = fd;
2452 }
2453}
2454
9977c894
MM		 2455static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2456{
2457 TCPCharDriver *s = chr->opaque;
7cba04f6 2458 struct msghdr msg = { NULL, };
9977c894 2459 struct iovec iov[1];
7d174059
MM		 2460 union {
2461 struct cmsghdr cmsg;
2462 char control[CMSG_SPACE(sizeof(int))];
2463 } msg_control;
06138651 2464 int flags = 0;
7d174059 2465 ssize_t ret;
9977c894
MM		 2466
2467 iov[0].iov_base = buf;
2468 iov[0].iov_len = len;
2469
2470 msg.msg_iov = iov;
2471 msg.msg_iovlen = 1;
7d174059
MM		 2472 msg.msg_control = &msg_control;
2473 msg.msg_controllen = sizeof(msg_control);
2474
06138651
CB		 2475#ifdef MSG_CMSG_CLOEXEC
2476 flags |= MSG_CMSG_CLOEXEC;
2477#endif
2478 ret = recvmsg(s->fd, &msg, flags);
2479 if (ret > 0 && s->is_unix) {
7d174059 2480 unix_process_msgfd(chr, &msg);
06138651 2481 }
9977c894 2482
7d174059 2483 return ret;
9977c894
MM		 2484}
2485#else
2486static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2487{
2488 TCPCharDriver *s = chr->opaque;
00aa0040 2489 return qemu_recv(s->fd, buf, len, 0);
9977c894
MM		 2490}
2491#endif
2492
d3cc5bc4
AS		 2493static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
2494{
2495 TCPCharDriver *s = chr->opaque;
2496 return g_io_create_watch(s->chan, cond);
2497}
2498
2ea5a7af 2499static gboolean tcp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
6f97dba0
AL		 2500{
2501 CharDriverState *chr = opaque;
2502 TCPCharDriver *s = chr->opaque;
9bd7854e 2503 uint8_t buf[READ_BUF_LEN];
6f97dba0
AL		 2504 int len, size;
2505
2ea5a7af
AL		 2506 if (!s->connected || s->max_size <= 0) {
2507 return FALSE;
2508 }
6f97dba0
AL		 2509 len = sizeof(buf);
2510 if (len > s->max_size)
2511 len = s->max_size;
9977c894 2512 size = tcp_chr_recv(chr, (void *)buf, len);
6f97dba0
AL		 2513 if (size == 0) {
2514 /* connection closed */
2515 s->connected = 0;
2ea5a7af
AL		 2516 if (s->listen_chan) {
2517 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr);
6f97dba0 2518 }
910b6368
PB		 2519 if (s->tag) {
2520 g_source_remove(s->tag);
2521 s->tag = 0;
2522 }
2ea5a7af
AL		 2523 g_io_channel_unref(s->chan);
2524 s->chan = NULL;
6f97dba0
AL		 2525 closesocket(s->fd);
2526 s->fd = -1;
a425d23f 2527 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 2528 } else if (size > 0) {
2529 if (s->do_telnetopt)
2530 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2531 if (size > 0)
fa5efccb 2532 qemu_chr_be_write(chr, buf, size);
6f97dba0 2533 }
2ea5a7af
AL		 2534
2535 return TRUE;
6f97dba0
AL		 2536}
2537
68c18d1c
BS		 2538#ifndef _WIN32
2539CharDriverState *qemu_chr_open_eventfd(int eventfd)
2540{
6cbf4c8c 2541 return qemu_chr_open_fd(eventfd, eventfd);
6cbf4c8c 2542}
68c18d1c 2543#endif
6cbf4c8c 2544
6f97dba0
AL		 2545static void tcp_chr_connect(void *opaque)
2546{
2547 CharDriverState *chr = opaque;
2548 TCPCharDriver *s = chr->opaque;
2549
2550 s->connected = 1;
2ea5a7af
AL		 2551 if (s->chan) {
2552 s->tag = io_add_watch_poll(s->chan, tcp_chr_read_poll, tcp_chr_read, chr);
bbdd2ad0 2553 }
fee204fd 2554 qemu_chr_be_generic_open(chr);
6f97dba0
AL		 2555}
2556
2557#define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
2558static void tcp_chr_telnet_init(int fd)
2559{
2560 char buf[3];
2561 /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
2562 IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2563 send(fd, (char *)buf, 3, 0);
2564 IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2565 send(fd, (char *)buf, 3, 0);
2566 IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2567 send(fd, (char *)buf, 3, 0);
2568 IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2569 send(fd, (char *)buf, 3, 0);
2570}
2571
13661089
DB		 2572static int tcp_chr_add_client(CharDriverState *chr, int fd)
2573{
2574 TCPCharDriver *s = chr->opaque;
2575 if (s->fd != -1)
2576 return -1;
2577
f9e8cacc 2578 qemu_set_nonblock(fd);
13661089
DB		 2579 if (s->do_nodelay)
2580 socket_set_nodelay(fd);
2581 s->fd = fd;
2ea5a7af 2582 s->chan = io_channel_from_socket(fd);
910b6368
PB		 2583 if (s->listen_tag) {
2584 g_source_remove(s->listen_tag);
2585 s->listen_tag = 0;
2586 }
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);
910b6368 2636 s->tag = 0;
2ea5a7af
AL		 2637 }
2638 if (s->chan) {
2639 g_io_channel_unref(s->chan);
2640 }
6f97dba0 2641 closesocket(s->fd);
819f56b7
AL		 2642 }
2643 if (s->listen_fd >= 0) {
2ea5a7af
AL		 2644 if (s->listen_tag) {
2645 g_source_remove(s->listen_tag);
910b6368 2646 s->listen_tag = 0;
2ea5a7af
AL		 2647 }
2648 if (s->listen_chan) {
2649 g_io_channel_unref(s->listen_chan);
2650 }
6f97dba0 2651 closesocket(s->listen_fd);
819f56b7 2652 }
7267c094 2653 g_free(s);
a425d23f 2654 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
6f97dba0
AL		 2655}
2656
f6bd5d6e
GH		 2657static CharDriverState *qemu_chr_open_socket_fd(int fd, bool do_nodelay,
2658 bool is_listen, bool is_telnet,
2659 bool is_waitconnect,
2660 Error **errp)
6f97dba0
AL		 2661{
2662 CharDriverState *chr = NULL;
2663 TCPCharDriver *s = NULL;
f6bd5d6e
GH		 2664 char host[NI_MAXHOST], serv[NI_MAXSERV];
2665 const char *left = "", *right = "";
2666 struct sockaddr_storage ss;
2667 socklen_t ss_len = sizeof(ss);
2668
2669 memset(&ss, 0, ss_len);
2670 if (getsockname(fd, (struct sockaddr *) &ss, &ss_len) != 0) {
2671 error_setg(errp, "getsockname: %s", strerror(errno));
2672 return NULL;
2673 }
2674
2675 chr = g_malloc0(sizeof(CharDriverState));
2676 s = g_malloc0(sizeof(TCPCharDriver));
2677
2678 s->connected = 0;
2679 s->fd = -1;
2680 s->listen_fd = -1;
2681 s->msgfd = -1;
2682
2683 chr->filename = g_malloc(256);
2684 switch (ss.ss_family) {
2685#ifndef _WIN32
2686 case AF_UNIX:
2687 s->is_unix = 1;
2688 snprintf(chr->filename, 256, "unix:%s%s",
2689 ((struct sockaddr_un *)(&ss))->sun_path,
2690 is_listen ? ",server" : "");
2691 break;
2692#endif
2693 case AF_INET6:
2694 left = "[";
2695 right = "]";
2696 /* fall through */
2697 case AF_INET:
2698 s->do_nodelay = do_nodelay;
2699 getnameinfo((struct sockaddr *) &ss, ss_len, host, sizeof(host),
2700 serv, sizeof(serv), NI_NUMERICHOST | NI_NUMERICSERV);
e5545854 2701 snprintf(chr->filename, 256, "%s:%s%s%s:%s%s",
f6bd5d6e
GH		 2702 is_telnet ? "telnet" : "tcp",
2703 left, host, right, serv,
2704 is_listen ? ",server" : "");
2705 break;
2706 }
2707
2708 chr->opaque = s;
2709 chr->chr_write = tcp_chr_write;
2710 chr->chr_close = tcp_chr_close;
2711 chr->get_msgfd = tcp_get_msgfd;
2712 chr->chr_add_client = tcp_chr_add_client;
d3cc5bc4 2713 chr->chr_add_watch = tcp_chr_add_watch;
f6bd5d6e
GH		 2714
2715 if (is_listen) {
2716 s->listen_fd = fd;
2ea5a7af
AL		 2717 s->listen_chan = io_channel_from_socket(s->listen_fd);
2718 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr);
f6bd5d6e
GH		 2719 if (is_telnet) {
2720 s->do_telnetopt = 1;
2721 }
2722 } else {
2723 s->connected = 1;
2724 s->fd = fd;
2725 socket_set_nodelay(fd);
2ea5a7af 2726 s->chan = io_channel_from_socket(s->fd);
f6bd5d6e
GH		 2727 tcp_chr_connect(chr);
2728 }
2729
2730 if (is_listen && is_waitconnect) {
2731 printf("QEMU waiting for connection on: %s\n",
2732 chr->filename);
2ea5a7af 2733 tcp_chr_accept(s->listen_chan, G_IO_IN, chr);
f9e8cacc 2734 qemu_set_nonblock(s->listen_fd);
f6bd5d6e
GH		 2735 }
2736 return chr;
2737}
2738
2739static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
2740{
2741 CharDriverState *chr = NULL;
87d5f24f 2742 Error *local_err = NULL;
aeb2c47a
GH		 2743 int fd = -1;
2744 int is_listen;
2745 int is_waitconnect;
2746 int do_nodelay;
2747 int is_unix;
2748 int is_telnet;
2749
2750 is_listen = qemu_opt_get_bool(opts, "server", 0);
2751 is_waitconnect = qemu_opt_get_bool(opts, "wait", 1);
2752 is_telnet = qemu_opt_get_bool(opts, "telnet", 0);
2753 do_nodelay = !qemu_opt_get_bool(opts, "delay", 1);
2754 is_unix = qemu_opt_get(opts, "path") != NULL;
6f97dba0
AL		 2755 if (!is_listen)
2756 is_waitconnect = 0;
2757
f07b6003
AL		 2758 if (is_unix) {
2759 if (is_listen) {
87d5f24f 2760 fd = unix_listen_opts(opts, &local_err);
f07b6003 2761 } else {
87d5f24f 2762 fd = unix_connect_opts(opts, &local_err, NULL, NULL);
f07b6003
AL		 2763 }
2764 } else {
2765 if (is_listen) {
87d5f24f 2766 fd = inet_listen_opts(opts, 0, &local_err);
f07b6003 2767 } else {
87d5f24f 2768 fd = inet_connect_opts(opts, &local_err, NULL, NULL);
f07b6003
AL		 2769 }
2770 }
a89dd6c3 2771 if (fd < 0) {
6f97dba0 2772 goto fail;
a89dd6c3 2773 }
6f97dba0
AL		 2774
2775 if (!is_waitconnect)
f9e8cacc 2776 qemu_set_nonblock(fd);
6f97dba0 2777
f6bd5d6e
GH		 2778 chr = qemu_chr_open_socket_fd(fd, do_nodelay, is_listen, is_telnet,
2779 is_waitconnect, &local_err);
2780 if (error_is_set(&local_err)) {
2781 goto fail;
6f97dba0 2782 }
1f51470d 2783 return chr;
aeb2c47a 2784
f6bd5d6e 2785
6f97dba0 2786 fail:
87d5f24f
PB		 2787 if (local_err) {
2788 qerror_report_err(local_err);
2789 error_free(local_err);
2790 }
2791 if (fd >= 0) {
6f97dba0 2792 closesocket(fd);
87d5f24f 2793 }
f6bd5d6e
GH		 2794 if (chr) {
2795 g_free(chr->opaque);
2796 g_free(chr);
2797 }
1f51470d 2798 return NULL;
6f97dba0
AL		 2799}
2800
51767e7c 2801/*********************************************************/
3949e594 2802/* Ring buffer chardev */
51767e7c
LL		 2803
2804typedef struct {
2805 size_t size;
2806 size_t prod;
2807 size_t cons;
2808 uint8_t *cbuf;
3949e594 2809} RingBufCharDriver;
51767e7c 2810
3949e594 2811static size_t ringbuf_count(const CharDriverState *chr)
51767e7c 2812{
3949e594 2813 const RingBufCharDriver *d = chr->opaque;
51767e7c 2814
5c230105 2815 return d->prod - d->cons;
51767e7c
LL		 2816}
2817
3949e594 2818static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
51767e7c 2819{
3949e594 2820 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 2821 int i;
2822
2823 if (!buf || (len < 0)) {
2824 return -1;
2825 }
2826
2827 for (i = 0; i < len; i++ ) {
5c230105
MA		 2828 d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
2829 if (d->prod - d->cons > d->size) {
51767e7c
LL		 2830 d->cons = d->prod - d->size;
2831 }
2832 }
2833
2834 return 0;
2835}
2836
3949e594 2837static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len)
51767e7c 2838{
3949e594 2839 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 2840 int i;
2841
5c230105
MA		 2842 for (i = 0; i < len && d->cons != d->prod; i++) {
2843 buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
51767e7c
LL		 2844 }
2845
2846 return i;
2847}
2848
3949e594 2849static void ringbuf_chr_close(struct CharDriverState *chr)
51767e7c 2850{
3949e594 2851 RingBufCharDriver *d = chr->opaque;
51767e7c
LL		 2852
2853 g_free(d->cbuf);
2854 g_free(d);
2855 chr->opaque = NULL;
2856}
2857
1da48c65
GH		 2858static CharDriverState *qemu_chr_open_ringbuf(ChardevRingbuf *opts,
2859 Error **errp)
51767e7c
LL		 2860{
2861 CharDriverState *chr;
3949e594 2862 RingBufCharDriver *d;
51767e7c
LL		 2863
2864 chr = g_malloc0(sizeof(CharDriverState));
2865 d = g_malloc(sizeof(*d));
2866
1da48c65 2867 d->size = opts->has_size ? opts->size : 65536;
51767e7c
LL		 2868
2869 /* The size must be power of 2 */
2870 if (d->size & (d->size - 1)) {
1da48c65 2871 error_setg(errp, "size of ringbuf chardev must be power of two");
51767e7c
LL		 2872 goto fail;
2873 }
2874
2875 d->prod = 0;
2876 d->cons = 0;
2877 d->cbuf = g_malloc0(d->size);
2878
2879 chr->opaque = d;
3949e594
MA		 2880 chr->chr_write = ringbuf_chr_write;
2881 chr->chr_close = ringbuf_chr_close;
51767e7c
LL		 2882
2883 return chr;
2884
2885fail:
2886 g_free(d);
2887 g_free(chr);
2888 return NULL;
2889}
2890
3949e594 2891static bool chr_is_ringbuf(const CharDriverState *chr)
1f590cf9 2892{
3949e594 2893 return chr->chr_write == ringbuf_chr_write;
1f590cf9
LL		 2894}
2895
3949e594 2896void qmp_ringbuf_write(const char *device, const char *data,
82e59a67 2897 bool has_format, enum DataFormat format,
1f590cf9
LL		 2898 Error **errp)
2899{
2900 CharDriverState *chr;
c4f331b6 2901 const uint8_t *write_data;
1f590cf9 2902 int ret;
c4f331b6 2903 size_t write_count;
1f590cf9
LL		 2904
2905 chr = qemu_chr_find(device);
2906 if (!chr) {
1a69278e 2907 error_setg(errp, "Device '%s' not found", device);
1f590cf9
LL		 2908 return;
2909 }
2910
3949e594
MA		 2911 if (!chr_is_ringbuf(chr)) {
2912 error_setg(errp,"%s is not a ringbuf device", device);
1f590cf9
LL		 2913 return;
2914 }
2915
1f590cf9
LL		 2916 if (has_format && (format == DATA_FORMAT_BASE64)) {
2917 write_data = g_base64_decode(data, &write_count);
2918 } else {
2919 write_data = (uint8_t *)data;
82e59a67 2920 write_count = strlen(data);
1f590cf9
LL		 2921 }
2922
3949e594 2923 ret = ringbuf_chr_write(chr, write_data, write_count);
1f590cf9 2924
13289fb5
MA		 2925 if (write_data != (uint8_t *)data) {
2926 g_free((void *)write_data);
2927 }
2928
1f590cf9
LL		 2929 if (ret < 0) {
2930 error_setg(errp, "Failed to write to device %s", device);
2931 return;
2932 }
2933}
2934
3949e594 2935char *qmp_ringbuf_read(const char *device, int64_t size,
3ab651fc
MA		 2936 bool has_format, enum DataFormat format,
2937 Error **errp)
49b6d722
LL		 2938{
2939 CharDriverState *chr;
c4f331b6 2940 uint8_t *read_data;
49b6d722 2941 size_t count;
3ab651fc 2942 char *data;
49b6d722
LL		 2943
2944 chr = qemu_chr_find(device);
2945 if (!chr) {
1a69278e 2946 error_setg(errp, "Device '%s' not found", device);
49b6d722
LL		 2947 return NULL;
2948 }
2949
3949e594
MA		 2950 if (!chr_is_ringbuf(chr)) {
2951 error_setg(errp,"%s is not a ringbuf device", device);
49b6d722
LL		 2952 return NULL;
2953 }
2954
2955 if (size <= 0) {
2956 error_setg(errp, "size must be greater than zero");
2957 return NULL;
2958 }
2959
3949e594 2960 count = ringbuf_count(chr);
49b6d722 2961 size = size > count ? count : size;
44f3bcd2 2962 read_data = g_malloc(size + 1);
49b6d722 2963
3949e594 2964 ringbuf_chr_read(chr, read_data, size);
49b6d722
LL		 2965
2966 if (has_format && (format == DATA_FORMAT_BASE64)) {
3ab651fc 2967 data = g_base64_encode(read_data, size);
13289fb5 2968 g_free(read_data);
49b6d722 2969 } else {
3949e594
MA		 2970 /*
2971 * FIXME should read only complete, valid UTF-8 characters up
2972 * to @size bytes. Invalid sequences should be replaced by a
2973 * suitable replacement character. Except when (and only
2974 * when) ring buffer lost characters since last read, initial
2975 * continuation characters should be dropped.
2976 */
44f3bcd2 2977 read_data[size] = 0;
3ab651fc 2978 data = (char *)read_data;
49b6d722
LL		 2979 }
2980
3ab651fc 2981 return data;
49b6d722
LL		 2982}
2983
33521634 2984QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
191bc01b 2985{
6ea314d9 2986 char host[65], port[33], width[8], height[8];
aeb2c47a 2987 int pos;
7d31544f 2988 const char *p;
191bc01b 2989 QemuOpts *opts;
8be7e7e4 2990 Error *local_err = NULL;
191bc01b 2991
8be7e7e4
LC		 2992 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
2993 if (error_is_set(&local_err)) {
2994 qerror_report_err(local_err);
2995 error_free(local_err);
191bc01b 2996 return NULL;
8be7e7e4 2997 }
191bc01b 2998
7591c5c1
GH		 2999 if (strstart(filename, "mon:", &p)) {
3000 filename = p;
3001 qemu_opt_set(opts, "mux", "on");
3002 }
3003
f0457e8d
GH		 3004 if (strcmp(filename, "null") == 0 ||
3005 strcmp(filename, "pty") == 0 ||
3006 strcmp(filename, "msmouse") == 0 ||
dc1c21e6 3007 strcmp(filename, "braille") == 0 ||
f0457e8d 3008 strcmp(filename, "stdio") == 0) {
4490dadf 3009 qemu_opt_set(opts, "backend", filename);
191bc01b
GH		 3010 return opts;
3011 }
6ea314d9
GH		 3012 if (strstart(filename, "vc", &p)) {
3013 qemu_opt_set(opts, "backend", "vc");
3014 if (*p == ':') {
3015 if (sscanf(p+1, "%8[0-9]x%8[0-9]", width, height) == 2) {
3016 /* pixels */
3017 qemu_opt_set(opts, "width", width);
3018 qemu_opt_set(opts, "height", height);
3019 } else if (sscanf(p+1, "%8[0-9]Cx%8[0-9]C", width, height) == 2) {
3020 /* chars */
3021 qemu_opt_set(opts, "cols", width);
3022 qemu_opt_set(opts, "rows", height);
3023 } else {
3024 goto fail;
3025 }
3026 }
3027 return opts;
3028 }
d6c983cd
GH		 3029 if (strcmp(filename, "con:") == 0) {
3030 qemu_opt_set(opts, "backend", "console");
3031 return opts;
3032 }
48b76496
GH		 3033 if (strstart(filename, "COM", NULL)) {
3034 qemu_opt_set(opts, "backend", "serial");
3035 qemu_opt_set(opts, "path", filename);
3036 return opts;
3037 }
7d31544f
GH		 3038 if (strstart(filename, "file:", &p)) {
3039 qemu_opt_set(opts, "backend", "file");
3040 qemu_opt_set(opts, "path", p);
3041 return opts;
3042 }
3043 if (strstart(filename, "pipe:", &p)) {
3044 qemu_opt_set(opts, "backend", "pipe");
3045 qemu_opt_set(opts, "path", p);
3046 return opts;
3047 }
aeb2c47a
GH		 3048 if (strstart(filename, "tcp:", &p) ||
3049 strstart(filename, "telnet:", &p)) {
3050 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3051 host[0] = 0;
3052 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
3053 goto fail;
3054 }
3055 qemu_opt_set(opts, "backend", "socket");
3056 qemu_opt_set(opts, "host", host);
3057 qemu_opt_set(opts, "port", port);
3058 if (p[pos] == ',') {
3059 if (qemu_opts_do_parse(opts, p+pos+1, NULL) != 0)
3060 goto fail;
3061 }
3062 if (strstart(filename, "telnet:", &p))
3063 qemu_opt_set(opts, "telnet", "on");
3064 return opts;
3065 }
7e1b35b4
GH		 3066 if (strstart(filename, "udp:", &p)) {
3067 qemu_opt_set(opts, "backend", "udp");
3068 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
3069 host[0] = 0;
39324ca4 3070 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
7e1b35b4
GH		 3071 goto fail;
3072 }
3073 }
3074 qemu_opt_set(opts, "host", host);
3075 qemu_opt_set(opts, "port", port);
3076 if (p[pos] == '@') {
3077 p += pos + 1;
3078 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3079 host[0] = 0;
3080 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
7e1b35b4
GH		 3081 goto fail;
3082 }
3083 }
3084 qemu_opt_set(opts, "localaddr", host);
3085 qemu_opt_set(opts, "localport", port);
3086 }
3087 return opts;
3088 }
aeb2c47a
GH		 3089 if (strstart(filename, "unix:", &p)) {
3090 qemu_opt_set(opts, "backend", "socket");
3091 if (qemu_opts_do_parse(opts, p, "path") != 0)
3092 goto fail;
3093 return opts;
3094 }
48b76496
GH		 3095 if (strstart(filename, "/dev/parport", NULL) ||
3096 strstart(filename, "/dev/ppi", NULL)) {
3097 qemu_opt_set(opts, "backend", "parport");
3098 qemu_opt_set(opts, "path", filename);
3099 return opts;
3100 }
3101 if (strstart(filename, "/dev/", NULL)) {
3102 qemu_opt_set(opts, "backend", "tty");
3103 qemu_opt_set(opts, "path", filename);
3104 return opts;
3105 }
191bc01b 3106
aeb2c47a 3107fail:
191bc01b
GH		 3108 qemu_opts_del(opts);
3109 return NULL;
3110}
3111
846e2e49
GH		 3112static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
3113 Error **errp)
3114{
3115 const char *path = qemu_opt_get(opts, "path");
3116
3117 if (path == NULL) {
3118 error_setg(errp, "chardev: file: no filename given");
3119 return;
3120 }
3121 backend->file = g_new0(ChardevFile, 1);
3122 backend->file->out = g_strdup(path);
3123}
3124
7c358031
GH		 3125static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
3126 Error **errp)
3127{
3128 backend->stdio = g_new0(ChardevStdio, 1);
3129 backend->stdio->has_signal = true;
3130 backend->stdio->signal =
3131 qemu_opt_get_bool(opts, "signal", display_type != DT_NOGRAPHIC);
3132}
3133
0f1cb51d
GH		 3134static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
3135 Error **errp)
3136{
3137 const char *device = qemu_opt_get(opts, "path");
3138
3139 if (device == NULL) {
3140 error_setg(errp, "chardev: serial/tty: no device path given");
3141 return;
3142 }
3143 backend->serial = g_new0(ChardevHostdev, 1);
3144 backend->serial->device = g_strdup(device);
3145}
3146
dc375097
GH		 3147static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
3148 Error **errp)
3149{
3150 const char *device = qemu_opt_get(opts, "path");
3151
3152 if (device == NULL) {
3153 error_setg(errp, "chardev: parallel: no device path given");
3154 return;
3155 }
3156 backend->parallel = g_new0(ChardevHostdev, 1);
3157 backend->parallel->device = g_strdup(device);
3158}
3159
548cbb36
GH		 3160static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
3161 Error **errp)
3162{
3163 const char *device = qemu_opt_get(opts, "path");
3164
3165 if (device == NULL) {
3166 error_setg(errp, "chardev: pipe: no device path given");
3167 return;
3168 }
3169 backend->pipe = g_new0(ChardevHostdev, 1);
3170 backend->pipe->device = g_strdup(device);
3171}
3172
1da48c65
GH		 3173static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
3174 Error **errp)
3175{
3176 int val;
3177
3178 backend->memory = g_new0(ChardevRingbuf, 1);
3179
3180 val = qemu_opt_get_number(opts, "size", 0);
3181 if (val != 0) {
3182 backend->memory->has_size = true;
3183 backend->memory->size = val;
3184 }
3185}
3186
d654f34e 3187typedef struct CharDriver {
191bc01b 3188 const char *name;
2c5f4882 3189 /* old, pre qapi */
1f51470d 3190 CharDriverState *(*open)(QemuOpts *opts);
2c5f4882
GH		 3191 /* new, qapi-based */
3192 int kind;
3193 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
d654f34e
AL		 3194} CharDriver;
3195
3196static GSList *backends;
3197
3198void register_char_driver(const char *name, CharDriverState *(*open)(QemuOpts *))
3199{
3200 CharDriver *s;
3201
3202 s = g_malloc0(sizeof(*s));
3203 s->name = g_strdup(name);
3204 s->open = open;
3205
3206 backends = g_slist_append(backends, s);
3207}
191bc01b 3208
2c5f4882
GH		 3209void register_char_driver_qapi(const char *name, int kind,
3210 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp))
3211{
3212 CharDriver *s;
3213
3214 s = g_malloc0(sizeof(*s));
3215 s->name = g_strdup(name);
3216 s->kind = kind;
3217 s->parse = parse;
3218
3219 backends = g_slist_append(backends, s);
3220}
3221
f69554b9 3222CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
bd2d80b2
GH		 3223 void (*init)(struct CharDriverState *s),
3224 Error **errp)
191bc01b 3225{
d654f34e 3226 CharDriver *cd;
191bc01b 3227 CharDriverState *chr;
d654f34e 3228 GSList *i;
191bc01b
GH		 3229
3230 if (qemu_opts_id(opts) == NULL) {
312fd5f2 3231 error_setg(errp, "chardev: no id specified");
2274ae9d 3232 goto err;
191bc01b
GH		 3233 }
3234
1bbd185f 3235 if (qemu_opt_get(opts, "backend") == NULL) {
312fd5f2 3236 error_setg(errp, "chardev: \"%s\" missing backend",
bd2d80b2 3237 qemu_opts_id(opts));
2274ae9d 3238 goto err;
1bbd185f 3239 }
d654f34e
AL		 3240 for (i = backends; i; i = i->next) {
3241 cd = i->data;
3242
3243 if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) {
191bc01b 3244 break;
d654f34e 3245 }
191bc01b 3246 }
d654f34e 3247 if (i == NULL) {
312fd5f2 3248 error_setg(errp, "chardev: backend \"%s\" not found",
bd2d80b2 3249 qemu_opt_get(opts, "backend"));
d654f34e 3250 return NULL;
191bc01b
GH		 3251 }
3252
2c5f4882
GH		 3253 if (!cd->open) {
3254 /* using new, qapi init */
3255 ChardevBackend *backend = g_new0(ChardevBackend, 1);
3256 ChardevReturn *ret = NULL;
3257 const char *id = qemu_opts_id(opts);
edb2fb3c
GH		 3258 const char *bid = NULL;
3259
3260 if (qemu_opt_get_bool(opts, "mux", 0)) {
3261 bid = g_strdup_printf("%s-base", id);
3262 }
2c5f4882
GH		 3263
3264 chr = NULL;
3265 backend->kind = cd->kind;
3266 if (cd->parse) {
3267 cd->parse(opts, backend, errp);
3268 if (error_is_set(errp)) {
3269 goto qapi_out;
3270 }
3271 }
edb2fb3c 3272 ret = qmp_chardev_add(bid ? bid : id, backend, errp);
2c5f4882
GH		 3273 if (error_is_set(errp)) {
3274 goto qapi_out;
3275 }
edb2fb3c
GH		 3276
3277 if (bid) {
3278 qapi_free_ChardevBackend(backend);
3279 qapi_free_ChardevReturn(ret);
3280 backend = g_new0(ChardevBackend, 1);
3281 backend->mux = g_new0(ChardevMux, 1);
3282 backend->kind = CHARDEV_BACKEND_KIND_MUX;
3283 backend->mux->chardev = g_strdup(bid);
3284 ret = qmp_chardev_add(id, backend, errp);
3285 if (error_is_set(errp)) {
3286 goto qapi_out;
3287 }
3288 }
3289
2c5f4882
GH		 3290 chr = qemu_chr_find(id);
3291
3292 qapi_out:
3293 qapi_free_ChardevBackend(backend);
3294 qapi_free_ChardevReturn(ret);
3295 return chr;
3296 }
3297
d654f34e 3298 chr = cd->open(opts);
1f51470d 3299 if (!chr) {
312fd5f2 3300 error_setg(errp, "chardev: opening backend \"%s\" failed",
bd2d80b2 3301 qemu_opt_get(opts, "backend"));
2274ae9d 3302 goto err;
191bc01b
GH		 3303 }
3304
3305 if (!chr->filename)
7267c094 3306 chr->filename = g_strdup(qemu_opt_get(opts, "backend"));
191bc01b 3307 chr->init = init;
72cf2d4f 3308 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
7591c5c1
GH		 3309
3310 if (qemu_opt_get_bool(opts, "mux", 0)) {
3311 CharDriverState *base = chr;
3312 int len = strlen(qemu_opts_id(opts)) + 6;
7267c094 3313 base->label = g_malloc(len);
7591c5c1
GH		 3314 snprintf(base->label, len, "%s-base", qemu_opts_id(opts));
3315 chr = qemu_chr_open_mux(base);
3316 chr->filename = base->filename;
d5b27167 3317 chr->avail_connections = MAX_MUX;
72cf2d4f 3318 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
d5b27167
KK		 3319 } else {
3320 chr->avail_connections = 1;
7591c5c1 3321 }
7267c094 3322 chr->label = g_strdup(qemu_opts_id(opts));
2274ae9d 3323 chr->opts = opts;
191bc01b 3324 return chr;
2274ae9d
GH		 3325
3326err:
3327 qemu_opts_del(opts);
3328 return NULL;
191bc01b
GH		 3329}
3330
27143a44 3331CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
6f97dba0
AL		 3332{
3333 const char *p;
3334 CharDriverState *chr;
191bc01b 3335 QemuOpts *opts;
bd2d80b2 3336 Error *err = NULL;
191bc01b 3337
c845f401
GH		 3338 if (strstart(filename, "chardev:", &p)) {
3339 return qemu_chr_find(p);
3340 }
3341
191bc01b 3342 opts = qemu_chr_parse_compat(label, filename);
7e1b35b4
GH		 3343 if (!opts)
3344 return NULL;
6f97dba0 3345
bd2d80b2
GH		 3346 chr = qemu_chr_new_from_opts(opts, init, &err);
3347 if (error_is_set(&err)) {
3348 fprintf(stderr, "%s\n", error_get_pretty(err));
3349 error_free(err);
3350 }
7e1b35b4 3351 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
456d6069 3352 qemu_chr_fe_claim_no_fail(chr);
7e1b35b4 3353 monitor_init(chr, MONITOR_USE_READLINE);
6f97dba0
AL		 3354 }
3355 return chr;
3356}
3357
15f31519 3358void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo)
c48855e1
PB		 3359{
3360 if (chr->chr_set_echo) {
3361 chr->chr_set_echo(chr, echo);
3362 }
3363}
3364
8e25daa8 3365void qemu_chr_fe_set_open(struct CharDriverState *chr, int fe_open)
7c32c4fe 3366{
8e25daa8 3367 if (chr->fe_open == fe_open) {
c0c4bd2c
HG		 3368 return;
3369 }
8e25daa8 3370 chr->fe_open = fe_open;
574b711a
HG		 3371 if (chr->chr_set_fe_open) {
3372 chr->chr_set_fe_open(chr, fe_open);
7c32c4fe
HG		 3373 }
3374}
3375
2c8a5942
KW		 3376int qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond,
3377 GIOFunc func, void *user_data)
23673ca7
AL		 3378{
3379 GSource *src;
3380 guint tag;
3381
3382 if (s->chr_add_watch == NULL) {
3383 return -ENOSYS;
3384 }
3385
3386 src = s->chr_add_watch(s, cond);
3387 g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
3388 tag = g_source_attach(src, NULL);
3389 g_source_unref(src);
3390
3391 return tag;
3392}
3393
44c473de
HG		 3394int qemu_chr_fe_claim(CharDriverState *s)
3395{
3396 if (s->avail_connections < 1) {
3397 return -1;
3398 }
3399 s->avail_connections--;
3400 return 0;
3401}
3402
3403void qemu_chr_fe_claim_no_fail(CharDriverState *s)
3404{
3405 if (qemu_chr_fe_claim(s) != 0) {
3406 fprintf(stderr, "%s: error chardev \"%s\" already used\n",
3407 __func__, s->label);
3408 exit(1);
3409 }
3410}
3411
3412void qemu_chr_fe_release(CharDriverState *s)
3413{
3414 s->avail_connections++;
3415}
3416
70f24fb6 3417void qemu_chr_delete(CharDriverState *chr)
6f97dba0 3418{
72cf2d4f 3419 QTAILQ_REMOVE(&chardevs, chr, next);
2274ae9d 3420 if (chr->chr_close) {
6f97dba0 3421 chr->chr_close(chr);
2274ae9d 3422 }
7267c094
AL		 3423 g_free(chr->filename);
3424 g_free(chr->label);
2274ae9d
GH		 3425 if (chr->opts) {
3426 qemu_opts_del(chr->opts);
3427 }
7267c094 3428 g_free(chr);
6f97dba0
AL		 3429}
3430
c5a415a0 3431ChardevInfoList *qmp_query_chardev(Error **errp)
6f97dba0 3432{
c5a415a0 3433 ChardevInfoList *chr_list = NULL;
6f97dba0
AL		 3434 CharDriverState *chr;
3435
72cf2d4f 3436 QTAILQ_FOREACH(chr, &chardevs, next) {
c5a415a0
LC		 3437 ChardevInfoList *info = g_malloc0(sizeof(*info));
3438 info->value = g_malloc0(sizeof(*info->value));
3439 info->value->label = g_strdup(chr->label);
3440 info->value->filename = g_strdup(chr->filename);
3441
3442 info->next = chr_list;
3443 chr_list = info;
6f97dba0 3444 }
588b3832 3445
c5a415a0 3446 return chr_list;
6f97dba0 3447}
c845f401
GH		 3448
3449CharDriverState *qemu_chr_find(const char *name)
3450{
3451 CharDriverState *chr;
3452
72cf2d4f 3453 QTAILQ_FOREACH(chr, &chardevs, next) {
c845f401
GH		 3454 if (strcmp(chr->label, name) != 0)
3455 continue;
3456 return chr;
3457 }
3458 return NULL;
3459}
0beb4942
AL		 3460
3461/* Get a character (serial) device interface. */
3462CharDriverState *qemu_char_get_next_serial(void)
3463{
3464 static int next_serial;
456d6069 3465 CharDriverState *chr;
0beb4942
AL		 3466
3467 /* FIXME: This function needs to go away: use chardev properties! */
456d6069
HG		 3468
3469 while (next_serial < MAX_SERIAL_PORTS && serial_hds[next_serial]) {
3470 chr = serial_hds[next_serial++];
3471 qemu_chr_fe_claim_no_fail(chr);
3472 return chr;
3473 }
3474 return NULL;
0beb4942
AL		 3475}
3476
4d454574
PB		 3477QemuOptsList qemu_chardev_opts = {
3478 .name = "chardev",
3479 .implied_opt_name = "backend",
3480 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
3481 .desc = {
3482 {
3483 .name = "backend",
3484 .type = QEMU_OPT_STRING,
3485 },{
3486 .name = "path",
3487 .type = QEMU_OPT_STRING,
3488 },{
3489 .name = "host",
3490 .type = QEMU_OPT_STRING,
3491 },{
3492 .name = "port",
3493 .type = QEMU_OPT_STRING,
3494 },{
3495 .name = "localaddr",
3496 .type = QEMU_OPT_STRING,
3497 },{
3498 .name = "localport",
3499 .type = QEMU_OPT_STRING,
3500 },{
3501 .name = "to",
3502 .type = QEMU_OPT_NUMBER,
3503 },{
3504 .name = "ipv4",
3505 .type = QEMU_OPT_BOOL,
3506 },{
3507 .name = "ipv6",
3508 .type = QEMU_OPT_BOOL,
3509 },{
3510 .name = "wait",
3511 .type = QEMU_OPT_BOOL,
3512 },{
3513 .name = "server",
3514 .type = QEMU_OPT_BOOL,
3515 },{
3516 .name = "delay",
3517 .type = QEMU_OPT_BOOL,
3518 },{
3519 .name = "telnet",
3520 .type = QEMU_OPT_BOOL,
3521 },{
3522 .name = "width",
3523 .type = QEMU_OPT_NUMBER,
3524 },{
3525 .name = "height",
3526 .type = QEMU_OPT_NUMBER,
3527 },{
3528 .name = "cols",
3529 .type = QEMU_OPT_NUMBER,
3530 },{
3531 .name = "rows",
3532 .type = QEMU_OPT_NUMBER,
3533 },{
3534 .name = "mux",
3535 .type = QEMU_OPT_BOOL,
3536 },{
3537 .name = "signal",
3538 .type = QEMU_OPT_BOOL,
3539 },{
3540 .name = "name",
3541 .type = QEMU_OPT_STRING,
3542 },{
3543 .name = "debug",
3544 .type = QEMU_OPT_NUMBER,
51767e7c 3545 },{
3949e594 3546 .name = "size",
de1cc36e 3547 .type = QEMU_OPT_SIZE,
4d454574
PB		 3548 },
3549 { /* end of list */ }
3550 },
3551};
f1a1a356 3552
ffbdbe59
GH		 3553#ifdef _WIN32
3554
3555static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
3556{
3557 HANDLE out;
3558
3559 if (file->in) {
3560 error_setg(errp, "input file not supported");
3561 return NULL;
3562 }
3563
3564 out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
3565 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
3566 if (out == INVALID_HANDLE_VALUE) {
3567 error_setg(errp, "open %s failed", file->out);
3568 return NULL;
3569 }
3570 return qemu_chr_open_win_file(out);
3571}
3572
d36b2b90
MA		 3573static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
3574 Error **errp)
d59044ef 3575{
d36b2b90
MA		 3576 return qemu_chr_open_win_path(serial->device);
3577}
3578
3579static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
3580 Error **errp)
3581{
3582 error_setg(errp, "character device backend type 'parallel' not supported");
3583 return NULL;
d59044ef
GH		 3584}
3585
ffbdbe59
GH		 3586#else /* WIN32 */
3587
3588static int qmp_chardev_open_file_source(char *src, int flags,
3589 Error **errp)
3590{
3591 int fd = -1;
3592
3593 TFR(fd = qemu_open(src, flags, 0666));
3594 if (fd == -1) {
3595 error_setg(errp, "open %s: %s", src, strerror(errno));
3596 }
3597 return fd;
3598}
3599
3600static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
3601{
3602 int flags, in = -1, out = -1;
3603
3604 flags = O_WRONLY | O_TRUNC | O_CREAT | O_BINARY;
3605 out = qmp_chardev_open_file_source(file->out, flags, errp);
3606 if (error_is_set(errp)) {
3607 return NULL;
3608 }
3609
3610 if (file->in) {
3611 flags = O_RDONLY;
3612 in = qmp_chardev_open_file_source(file->in, flags, errp);
3613 if (error_is_set(errp)) {
3614 qemu_close(out);
3615 return NULL;
3616 }
3617 }
3618
3619 return qemu_chr_open_fd(in, out);
3620}
3621
d36b2b90
MA		 3622static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
3623 Error **errp)
d59044ef 3624{
d59044ef 3625#ifdef HAVE_CHARDEV_TTY
d36b2b90
MA		 3626 int fd;
3627
3628 fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
3629 if (error_is_set(errp)) {
3630 return NULL;
39099991 3631 }
f9e8cacc 3632 qemu_set_nonblock(fd);
d36b2b90
MA		 3633 return qemu_chr_open_tty_fd(fd);
3634#else
3635 error_setg(errp, "character device backend type 'serial' not supported");
3636 return NULL;
88a946d3 3637#endif
d36b2b90
MA		 3638}
3639
3640static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
3641 Error **errp)
3642{
88a946d3 3643#ifdef HAVE_CHARDEV_PARPORT
d36b2b90
MA		 3644 int fd;
3645
3646 fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
3647 if (error_is_set(errp)) {
d59044ef
GH		 3648 return NULL;
3649 }
d36b2b90
MA		 3650 return qemu_chr_open_pp_fd(fd);
3651#else
3652 error_setg(errp, "character device backend type 'parallel' not supported");
3653 return NULL;
3654#endif
d59044ef
GH		 3655}
3656
ffbdbe59
GH		 3657#endif /* WIN32 */
3658
f6bd5d6e
GH		 3659static CharDriverState *qmp_chardev_open_socket(ChardevSocket *sock,
3660 Error **errp)
3661{
3662 SocketAddress *addr = sock->addr;
3663 bool do_nodelay = sock->has_nodelay ? sock->nodelay : false;
3664 bool is_listen = sock->has_server ? sock->server : true;
3665 bool is_telnet = sock->has_telnet ? sock->telnet : false;
3666 bool is_waitconnect = sock->has_wait ? sock->wait : false;
3667 int fd;
3668
3669 if (is_listen) {
3670 fd = socket_listen(addr, errp);
3671 } else {
3672 fd = socket_connect(addr, errp, NULL, NULL);
3673 }
3674 if (error_is_set(errp)) {
3675 return NULL;
3676 }
3677 return qemu_chr_open_socket_fd(fd, do_nodelay, is_listen,
3678 is_telnet, is_waitconnect, errp);
3679}
3680
3ecc059d
GH		 3681static CharDriverState *qmp_chardev_open_dgram(ChardevDgram *dgram,
3682 Error **errp)
3683{
3684 int fd;
3685
3686 fd = socket_dgram(dgram->remote, dgram->local, errp);
3687 if (error_is_set(errp)) {
3688 return NULL;
3689 }
3690 return qemu_chr_open_udp_fd(fd);
3691}
3692
f1a1a356
GH		 3693ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
3694 Error **errp)
3695{
3696 ChardevReturn *ret = g_new0(ChardevReturn, 1);
edb2fb3c 3697 CharDriverState *base, *chr = NULL;
f1a1a356
GH		 3698
3699 chr = qemu_chr_find(id);
3700 if (chr) {
3701 error_setg(errp, "Chardev '%s' already exists", id);
3702 g_free(ret);
3703 return NULL;
3704 }
3705
3706 switch (backend->kind) {
ffbdbe59
GH		 3707 case CHARDEV_BACKEND_KIND_FILE:
3708 chr = qmp_chardev_open_file(backend->file, errp);
3709 break;
d36b2b90
MA		 3710 case CHARDEV_BACKEND_KIND_SERIAL:
3711 chr = qmp_chardev_open_serial(backend->serial, errp);
3712 break;
3713 case CHARDEV_BACKEND_KIND_PARALLEL:
3714 chr = qmp_chardev_open_parallel(backend->parallel, errp);
d59044ef 3715 break;
548cbb36
GH		 3716 case CHARDEV_BACKEND_KIND_PIPE:
3717 chr = qemu_chr_open_pipe(backend->pipe);
3718 break;
f6bd5d6e
GH		 3719 case CHARDEV_BACKEND_KIND_SOCKET:
3720 chr = qmp_chardev_open_socket(backend->socket, errp);
3721 break;
3ecc059d
GH		 3722 case CHARDEV_BACKEND_KIND_DGRAM:
3723 chr = qmp_chardev_open_dgram(backend->dgram, errp);
3724 break;
0a1a7fab
GH		 3725#ifdef HAVE_CHARDEV_TTY
3726 case CHARDEV_BACKEND_KIND_PTY:
e68c5958 3727 chr = qemu_chr_open_pty(id, ret);
0a1a7fab 3728 break;
0a1a7fab 3729#endif
f1a1a356 3730 case CHARDEV_BACKEND_KIND_NULL:
80dca9e6 3731 chr = qemu_chr_open_null();
f1a1a356 3732 break;
edb2fb3c
GH		 3733 case CHARDEV_BACKEND_KIND_MUX:
3734 base = qemu_chr_find(backend->mux->chardev);
3735 if (base == NULL) {
3736 error_setg(errp, "mux: base chardev %s not found",
3737 backend->mux->chardev);
3738 break;
3739 }
3740 chr = qemu_chr_open_mux(base);
3741 break;
f5a51cab
GH		 3742 case CHARDEV_BACKEND_KIND_MSMOUSE:
3743 chr = qemu_chr_open_msmouse();
3744 break;
2d57286d
GH		 3745#ifdef CONFIG_BRLAPI
3746 case CHARDEV_BACKEND_KIND_BRAILLE:
3747 chr = chr_baum_init();
3748 break;
3749#endif
7c358031
GH		 3750 case CHARDEV_BACKEND_KIND_STDIO:
3751 chr = qemu_chr_open_stdio(backend->stdio);
3752 break;
d9ac374f
GH		 3753#ifdef _WIN32
3754 case CHARDEV_BACKEND_KIND_CONSOLE:
3755 chr = qemu_chr_open_win_con();
3756 break;
cd153e2a
GH		 3757#endif
3758#ifdef CONFIG_SPICE
3759 case CHARDEV_BACKEND_KIND_SPICEVMC:
3760 chr = qemu_chr_open_spice_vmc(backend->spicevmc->type);
3761 break;
3762 case CHARDEV_BACKEND_KIND_SPICEPORT:
3763 chr = qemu_chr_open_spice_port(backend->spiceport->fqdn);
3764 break;
d9ac374f 3765#endif
702ec69c
GH		 3766 case CHARDEV_BACKEND_KIND_VC:
3767 chr = vc_init(backend->vc);
3768 break;
1da48c65
GH		 3769 case CHARDEV_BACKEND_KIND_MEMORY:
3770 chr = qemu_chr_open_ringbuf(backend->memory, errp);
3771 break;
f1a1a356
GH		 3772 default:
3773 error_setg(errp, "unknown chardev backend (%d)", backend->kind);
3774 break;
3775 }
3776
3777 if (chr == NULL && !error_is_set(errp)) {
3778 error_setg(errp, "Failed to create chardev");
3779 }
3780 if (chr) {
3781 chr->label = g_strdup(id);
edb2fb3c
GH		 3782 chr->avail_connections =
3783 (backend->kind == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1;
f1a1a356
GH		 3784 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3785 return ret;
3786 } else {
3787 g_free(ret);
3788 return NULL;
3789 }
3790}
3791
3792void qmp_chardev_remove(const char *id, Error **errp)
3793{
3794 CharDriverState *chr;
3795
3796 chr = qemu_chr_find(id);
3797 if (NULL == chr) {
3798 error_setg(errp, "Chardev '%s' not found", id);
3799 return;
3800 }
3801 if (chr->chr_can_read || chr->chr_read ||
3802 chr->chr_event || chr->handler_opaque) {
3803 error_setg(errp, "Chardev '%s' is busy", id);
3804 return;
3805 }
3806 qemu_chr_delete(chr);
3807}
d654f34e
AL		 3808
3809static void register_types(void)
3810{
80dca9e6 3811 register_char_driver_qapi("null", CHARDEV_BACKEND_KIND_NULL, NULL);
d654f34e
AL		 3812 register_char_driver("socket", qemu_chr_open_socket);
3813 register_char_driver("udp", qemu_chr_open_udp);
1da48c65
GH		 3814 register_char_driver_qapi("memory", CHARDEV_BACKEND_KIND_MEMORY,
3815 qemu_chr_parse_ringbuf);
846e2e49
GH		 3816 register_char_driver_qapi("file", CHARDEV_BACKEND_KIND_FILE,
3817 qemu_chr_parse_file_out);
7c358031
GH		 3818 register_char_driver_qapi("stdio", CHARDEV_BACKEND_KIND_STDIO,
3819 qemu_chr_parse_stdio);
0f1cb51d
GH		 3820 register_char_driver_qapi("serial", CHARDEV_BACKEND_KIND_SERIAL,
3821 qemu_chr_parse_serial);
3822 register_char_driver_qapi("tty", CHARDEV_BACKEND_KIND_SERIAL,
3823 qemu_chr_parse_serial);
dc375097
GH		 3824 register_char_driver_qapi("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
3825 qemu_chr_parse_parallel);
3826 register_char_driver_qapi("parport", CHARDEV_BACKEND_KIND_PARALLEL,
3827 qemu_chr_parse_parallel);
e68c5958 3828 register_char_driver_qapi("pty", CHARDEV_BACKEND_KIND_PTY, NULL);
d9ac374f 3829 register_char_driver_qapi("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL);
548cbb36
GH		 3830 register_char_driver_qapi("pipe", CHARDEV_BACKEND_KIND_PIPE,
3831 qemu_chr_parse_pipe);
d654f34e
AL		 3832}
3833
3834type_init(register_types);
Qemu copy for testing