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pc & q35: Add new machine opt max-ram-below-4g
[qemu/kevin.git] / qemu-char.c
blobe6cbafb09cafbf91b04bab369e9ed015d136bda4
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"
25 #include "monitor/monitor.h"
26 #include "sysemu/sysemu.h"
27 #include "qemu/timer.h"
28 #include "sysemu/char.h"
29 #include "hw/usb.h"
30 #include "qmp-commands.h"
31
32 #include <unistd.h>
33 #include <fcntl.h>
34 #include <time.h>
35 #include <errno.h>
36 #include <sys/time.h>
37 #include <zlib.h>
38
39 #ifndef _WIN32
40 #include <sys/times.h>
41 #include <sys/wait.h>
42 #include <termios.h>
43 #include <sys/mman.h>
44 #include <sys/ioctl.h>
45 #include <sys/resource.h>
46 #include <sys/socket.h>
47 #include <netinet/in.h>
48 #include <net/if.h>
49 #include <arpa/inet.h>
50 #include <dirent.h>
51 #include <netdb.h>
52 #include <sys/select.h>
53 #ifdef CONFIG_BSD
54 #include <sys/stat.h>
55 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
56 #include <dev/ppbus/ppi.h>
57 #include <dev/ppbus/ppbconf.h>
58 #elif defined(__DragonFly__)
59 #include <dev/misc/ppi/ppi.h>
60 #include <bus/ppbus/ppbconf.h>
61 #endif
62 #else
63 #ifdef __linux__
64 #include <linux/ppdev.h>
65 #include <linux/parport.h>
66 #endif
67 #ifdef __sun__
68 #include <sys/stat.h>
69 #include <sys/ethernet.h>
70 #include <sys/sockio.h>
71 #include <netinet/arp.h>
72 #include <netinet/in.h>
73 #include <netinet/in_systm.h>
74 #include <netinet/ip.h>
75 #include <netinet/ip_icmp.h> // must come after ip.h
76 #include <netinet/udp.h>
77 #include <netinet/tcp.h>
78 #endif
79 #endif
80 #endif
81
82 #include "qemu/sockets.h"
83 #include "ui/qemu-spice.h"
84
85 #define READ_BUF_LEN 4096
86 #define READ_RETRIES 10
87
88 /***********************************************************/
89 /* character device */
90
91 static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
92 QTAILQ_HEAD_INITIALIZER(chardevs);
93
94 void qemu_chr_be_event(CharDriverState *s, int event)
95 {
96 /* Keep track if the char device is open */
97 switch (event) {
98 case CHR_EVENT_OPENED:
99 s->be_open = 1;
100 break;
101 case CHR_EVENT_CLOSED:
102 s->be_open = 0;
103 break;
104 }
105
106 if (!s->chr_event)
107 return;
108 s->chr_event(s->handler_opaque, event);
109 }
110
111 void qemu_chr_be_generic_open(CharDriverState *s)
112 {
113 qemu_chr_be_event(s, CHR_EVENT_OPENED);
114 }
115
116 int qemu_chr_fe_write(CharDriverState *s, const uint8_t *buf, int len)
117 {
118 return s->chr_write(s, buf, len);
119 }
120
121 int qemu_chr_fe_write_all(CharDriverState *s, const uint8_t *buf, int len)
122 {
123 int offset = 0;
124 int res;
125
126 while (offset < len) {
127 do {
128 res = s->chr_write(s, buf + offset, len - offset);
129 if (res == -1 && errno == EAGAIN) {
130 g_usleep(100);
131 }
132 } while (res == -1 && errno == EAGAIN);
133
134 if (res == 0) {
135 break;
136 }
137
138 if (res < 0) {
139 return res;
140 }
141
142 offset += res;
143 }
144
145 return offset;
146 }
147
148 int qemu_chr_fe_read_all(CharDriverState *s, uint8_t *buf, int len)
149 {
150 int offset = 0, counter = 10;
151 int res;
152
153 if (!s->chr_sync_read) {
154 return 0;
155 }
156
157 while (offset < len) {
158 do {
159 res = s->chr_sync_read(s, buf + offset, len - offset);
160 if (res == -1 && errno == EAGAIN) {
161 g_usleep(100);
162 }
163 } while (res == -1 && errno == EAGAIN);
164
165 if (res == 0) {
166 break;
167 }
168
169 if (res < 0) {
170 return res;
171 }
172
173 offset += res;
174
175 if (!counter--) {
176 break;
177 }
178 }
179
180 return offset;
181 }
182
183 int qemu_chr_fe_ioctl(CharDriverState *s, int cmd, void *arg)
184 {
185 if (!s->chr_ioctl)
186 return -ENOTSUP;
187 return s->chr_ioctl(s, cmd, arg);
188 }
189
190 int qemu_chr_be_can_write(CharDriverState *s)
191 {
192 if (!s->chr_can_read)
193 return 0;
194 return s->chr_can_read(s->handler_opaque);
195 }
196
197 void qemu_chr_be_write(CharDriverState *s, uint8_t *buf, int len)
198 {
199 if (s->chr_read) {
200 s->chr_read(s->handler_opaque, buf, len);
201 }
202 }
203
204 int qemu_chr_fe_get_msgfd(CharDriverState *s)
205 {
206 int fd;
207 return (qemu_chr_fe_get_msgfds(s, &fd, 1) == 1) ? fd : -1;
208 }
209
210 int qemu_chr_fe_get_msgfds(CharDriverState *s, int *fds, int len)
211 {
212 return s->get_msgfds ? s->get_msgfds(s, fds, len) : -1;
213 }
214
215 int qemu_chr_fe_set_msgfds(CharDriverState *s, int *fds, int num)
216 {
217 return s->set_msgfds ? s->set_msgfds(s, fds, num) : -1;
218 }
219
220 int qemu_chr_add_client(CharDriverState *s, int fd)
221 {
222 return s->chr_add_client ? s->chr_add_client(s, fd) : -1;
223 }
224
225 void qemu_chr_accept_input(CharDriverState *s)
226 {
227 if (s->chr_accept_input)
228 s->chr_accept_input(s);
229 qemu_notify_event();
230 }
231
232 void qemu_chr_fe_printf(CharDriverState *s, const char *fmt, ...)
233 {
234 char buf[READ_BUF_LEN];
235 va_list ap;
236 va_start(ap, fmt);
237 vsnprintf(buf, sizeof(buf), fmt, ap);
238 qemu_chr_fe_write(s, (uint8_t *)buf, strlen(buf));
239 va_end(ap);
240 }
241
242 static void remove_fd_in_watch(CharDriverState *chr);
243
244 void qemu_chr_add_handlers(CharDriverState *s,
245 IOCanReadHandler *fd_can_read,
246 IOReadHandler *fd_read,
247 IOEventHandler *fd_event,
248 void *opaque)
249 {
250 int fe_open;
251
252 if (!opaque && !fd_can_read && !fd_read && !fd_event) {
253 fe_open = 0;
254 remove_fd_in_watch(s);
255 } else {
256 fe_open = 1;
257 }
258 s->chr_can_read = fd_can_read;
259 s->chr_read = fd_read;
260 s->chr_event = fd_event;
261 s->handler_opaque = opaque;
262 if (fe_open && s->chr_update_read_handler)
263 s->chr_update_read_handler(s);
264
265 if (!s->explicit_fe_open) {
266 qemu_chr_fe_set_open(s, fe_open);
267 }
268
269 /* We're connecting to an already opened device, so let's make sure we
270 also get the open event */
271 if (fe_open && s->be_open) {
272 qemu_chr_be_generic_open(s);
273 }
274 }
275
276 static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
277 {
278 return len;
279 }
280
281 static CharDriverState *qemu_chr_open_null(void)
282 {
283 CharDriverState *chr;
284
285 chr = g_malloc0(sizeof(CharDriverState));
286 chr->chr_write = null_chr_write;
287 chr->explicit_be_open = true;
288 return chr;
289 }
290
291 /* MUX driver for serial I/O splitting */
292 #define MAX_MUX 4
293 #define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
294 #define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
295 typedef struct {
296 IOCanReadHandler *chr_can_read[MAX_MUX];
297 IOReadHandler *chr_read[MAX_MUX];
298 IOEventHandler *chr_event[MAX_MUX];
299 void *ext_opaque[MAX_MUX];
300 CharDriverState *drv;
301 int focus;
302 int mux_cnt;
303 int term_got_escape;
304 int max_size;
305 /* Intermediate input buffer allows to catch escape sequences even if the
306 currently active device is not accepting any input - but only until it
307 is full as well. */
308 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
309 int prod[MAX_MUX];
310 int cons[MAX_MUX];
311 int timestamps;
312 int linestart;
313 int64_t timestamps_start;
314 } MuxDriver;
315
316
317 static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
318 {
319 MuxDriver *d = chr->opaque;
320 int ret;
321 if (!d->timestamps) {
322 ret = d->drv->chr_write(d->drv, buf, len);
323 } else {
324 int i;
325
326 ret = 0;
327 for (i = 0; i < len; i++) {
328 if (d->linestart) {
329 char buf1[64];
330 int64_t ti;
331 int secs;
332
333 ti = qemu_clock_get_ms(QEMU_CLOCK_REALTIME);
334 if (d->timestamps_start == -1)
335 d->timestamps_start = ti;
336 ti -= d->timestamps_start;
337 secs = ti / 1000;
338 snprintf(buf1, sizeof(buf1),
339 "[%02d:%02d:%02d.%03d] ",
340 secs / 3600,
341 (secs / 60) % 60,
342 secs % 60,
343 (int)(ti % 1000));
344 d->drv->chr_write(d->drv, (uint8_t *)buf1, strlen(buf1));
345 d->linestart = 0;
346 }
347 ret += d->drv->chr_write(d->drv, buf+i, 1);
348 if (buf[i] == '\n') {
349 d->linestart = 1;
350 }
351 }
352 }
353 return ret;
354 }
355
356 static const char * const mux_help[] = {
357 "% h print this help\n\r",
358 "% x exit emulator\n\r",
359 "% s save disk data back to file (if -snapshot)\n\r",
360 "% t toggle console timestamps\n\r"
361 "% b send break (magic sysrq)\n\r",
362 "% c switch between console and monitor\n\r",
363 "% % sends %\n\r",
364 NULL
365 };
366
367 int term_escape_char = 0x01; /* ctrl-a is used for escape */
368 static void mux_print_help(CharDriverState *chr)
369 {
370 int i, j;
371 char ebuf[15] = "Escape-Char";
372 char cbuf[50] = "\n\r";
373
374 if (term_escape_char > 0 && term_escape_char < 26) {
375 snprintf(cbuf, sizeof(cbuf), "\n\r");
376 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
377 } else {
378 snprintf(cbuf, sizeof(cbuf),
379 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
380 term_escape_char);
381 }
382 chr->chr_write(chr, (uint8_t *)cbuf, strlen(cbuf));
383 for (i = 0; mux_help[i] != NULL; i++) {
384 for (j=0; mux_help[i][j] != '\0'; j++) {
385 if (mux_help[i][j] == '%')
386 chr->chr_write(chr, (uint8_t *)ebuf, strlen(ebuf));
387 else
388 chr->chr_write(chr, (uint8_t *)&mux_help[i][j], 1);
389 }
390 }
391 }
392
393 static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
394 {
395 if (d->chr_event[mux_nr])
396 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
397 }
398
399 static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
400 {
401 if (d->term_got_escape) {
402 d->term_got_escape = 0;
403 if (ch == term_escape_char)
404 goto send_char;
405 switch(ch) {
406 case '?':
407 case 'h':
408 mux_print_help(chr);
409 break;
410 case 'x':
411 {
412 const char *term = "QEMU: Terminated\n\r";
413 chr->chr_write(chr,(uint8_t *)term,strlen(term));
414 exit(0);
415 break;
416 }
417 case 's':
418 bdrv_commit_all();
419 break;
420 case 'b':
421 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
422 break;
423 case 'c':
424 /* Switch to the next registered device */
425 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
426 d->focus++;
427 if (d->focus >= d->mux_cnt)
428 d->focus = 0;
429 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
430 break;
431 case 't':
432 d->timestamps = !d->timestamps;
433 d->timestamps_start = -1;
434 d->linestart = 0;
435 break;
436 }
437 } else if (ch == term_escape_char) {
438 d->term_got_escape = 1;
439 } else {
440 send_char:
441 return 1;
442 }
443 return 0;
444 }
445
446 static void mux_chr_accept_input(CharDriverState *chr)
447 {
448 MuxDriver *d = chr->opaque;
449 int m = d->focus;
450
451 while (d->prod[m] != d->cons[m] &&
452 d->chr_can_read[m] &&
453 d->chr_can_read[m](d->ext_opaque[m])) {
454 d->chr_read[m](d->ext_opaque[m],
455 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
456 }
457 }
458
459 static int mux_chr_can_read(void *opaque)
460 {
461 CharDriverState *chr = opaque;
462 MuxDriver *d = chr->opaque;
463 int m = d->focus;
464
465 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
466 return 1;
467 if (d->chr_can_read[m])
468 return d->chr_can_read[m](d->ext_opaque[m]);
469 return 0;
470 }
471
472 static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
473 {
474 CharDriverState *chr = opaque;
475 MuxDriver *d = chr->opaque;
476 int m = d->focus;
477 int i;
478
479 mux_chr_accept_input (opaque);
480
481 for(i = 0; i < size; i++)
482 if (mux_proc_byte(chr, d, buf[i])) {
483 if (d->prod[m] == d->cons[m] &&
484 d->chr_can_read[m] &&
485 d->chr_can_read[m](d->ext_opaque[m]))
486 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
487 else
488 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
489 }
490 }
491
492 static void mux_chr_event(void *opaque, int event)
493 {
494 CharDriverState *chr = opaque;
495 MuxDriver *d = chr->opaque;
496 int i;
497
498 /* Send the event to all registered listeners */
499 for (i = 0; i < d->mux_cnt; i++)
500 mux_chr_send_event(d, i, event);
501 }
502
503 static void mux_chr_update_read_handler(CharDriverState *chr)
504 {
505 MuxDriver *d = chr->opaque;
506
507 if (d->mux_cnt >= MAX_MUX) {
508 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
509 return;
510 }
511 d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
512 d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
513 d->chr_read[d->mux_cnt] = chr->chr_read;
514 d->chr_event[d->mux_cnt] = chr->chr_event;
515 /* Fix up the real driver with mux routines */
516 if (d->mux_cnt == 0) {
517 qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
518 mux_chr_event, chr);
519 }
520 if (d->focus != -1) {
521 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
522 }
523 d->focus = d->mux_cnt;
524 d->mux_cnt++;
525 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
526 }
527
528 static bool muxes_realized;
529
530 /**
531 * Called after processing of default and command-line-specified
532 * chardevs to deliver CHR_EVENT_OPENED events to any FEs attached
533 * to a mux chardev. This is done here to ensure that
534 * output/prompts/banners are only displayed for the FE that has
535 * focus when initial command-line processing/machine init is
536 * completed.
537 *
538 * After this point, any new FE attached to any new or existing
539 * mux will receive CHR_EVENT_OPENED notifications for the BE
540 * immediately.
541 */
542 static void muxes_realize_done(Notifier *notifier, void *unused)
543 {
544 CharDriverState *chr;
545
546 QTAILQ_FOREACH(chr, &chardevs, next) {
547 if (chr->is_mux) {
548 MuxDriver *d = chr->opaque;
549 int i;
550
551 /* send OPENED to all already-attached FEs */
552 for (i = 0; i < d->mux_cnt; i++) {
553 mux_chr_send_event(d, i, CHR_EVENT_OPENED);
554 }
555 /* mark mux as OPENED so any new FEs will immediately receive
556 * OPENED event
557 */
558 qemu_chr_be_generic_open(chr);
559 }
560 }
561 muxes_realized = true;
562 }
563
564 static Notifier muxes_realize_notify = {
565 .notify = muxes_realize_done,
566 };
567
568 static CharDriverState *qemu_chr_open_mux(CharDriverState *drv)
569 {
570 CharDriverState *chr;
571 MuxDriver *d;
572
573 chr = g_malloc0(sizeof(CharDriverState));
574 d = g_malloc0(sizeof(MuxDriver));
575
576 chr->opaque = d;
577 d->drv = drv;
578 d->focus = -1;
579 chr->chr_write = mux_chr_write;
580 chr->chr_update_read_handler = mux_chr_update_read_handler;
581 chr->chr_accept_input = mux_chr_accept_input;
582 /* Frontend guest-open / -close notification is not support with muxes */
583 chr->chr_set_fe_open = NULL;
584 /* only default to opened state if we've realized the initial
585 * set of muxes
586 */
587 chr->explicit_be_open = muxes_realized ? 0 : 1;
588 chr->is_mux = 1;
589
590 return chr;
591 }
592
593
594 #ifdef _WIN32
595 int send_all(int fd, const void *buf, int len1)
596 {
597 int ret, len;
598
599 len = len1;
600 while (len > 0) {
601 ret = send(fd, buf, len, 0);
602 if (ret < 0) {
603 errno = WSAGetLastError();
604 if (errno != WSAEWOULDBLOCK) {
605 return -1;
606 }
607 } else if (ret == 0) {
608 break;
609 } else {
610 buf += ret;
611 len -= ret;
612 }
613 }
614 return len1 - len;
615 }
616
617 #else
618
619 int send_all(int fd, const void *_buf, int len1)
620 {
621 int ret, len;
622 const uint8_t *buf = _buf;
623
624 len = len1;
625 while (len > 0) {
626 ret = write(fd, buf, len);
627 if (ret < 0) {
628 if (errno != EINTR && errno != EAGAIN)
629 return -1;
630 } else if (ret == 0) {
631 break;
632 } else {
633 buf += ret;
634 len -= ret;
635 }
636 }
637 return len1 - len;
638 }
639
640 int recv_all(int fd, void *_buf, int len1, bool single_read)
641 {
642 int ret, len;
643 uint8_t *buf = _buf;
644
645 len = len1;
646 while ((len > 0) && (ret = read(fd, buf, len)) != 0) {
647 if (ret < 0) {
648 if (errno != EINTR && errno != EAGAIN) {
649 return -1;
650 }
651 continue;
652 } else {
653 if (single_read) {
654 return ret;
655 }
656 buf += ret;
657 len -= ret;
658 }
659 }
660 return len1 - len;
661 }
662
663 #endif /* !_WIN32 */
664
665 typedef struct IOWatchPoll
666 {
667 GSource parent;
668
669 GIOChannel *channel;
670 GSource *src;
671
672 IOCanReadHandler *fd_can_read;
673 GSourceFunc fd_read;
674 void *opaque;
675 } IOWatchPoll;
676
677 static IOWatchPoll *io_watch_poll_from_source(GSource *source)
678 {
679 return container_of(source, IOWatchPoll, parent);
680 }
681
682 static gboolean io_watch_poll_prepare(GSource *source, gint *timeout_)
683 {
684 IOWatchPoll *iwp = io_watch_poll_from_source(source);
685 bool now_active = iwp->fd_can_read(iwp->opaque) > 0;
686 bool was_active = iwp->src != NULL;
687 if (was_active == now_active) {
688 return FALSE;
689 }
690
691 if (now_active) {
692 iwp->src = g_io_create_watch(iwp->channel, G_IO_IN | G_IO_ERR | G_IO_HUP);
693 g_source_set_callback(iwp->src, iwp->fd_read, iwp->opaque, NULL);
694 g_source_attach(iwp->src, NULL);
695 } else {
696 g_source_destroy(iwp->src);
697 g_source_unref(iwp->src);
698 iwp->src = NULL;
699 }
700 return FALSE;
701 }
702
703 static gboolean io_watch_poll_check(GSource *source)
704 {
705 return FALSE;
706 }
707
708 static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
709 gpointer user_data)
710 {
711 abort();
712 }
713
714 static void io_watch_poll_finalize(GSource *source)
715 {
716 /* Due to a glib bug, removing the last reference to a source
717 * inside a finalize callback causes recursive locking (and a
718 * deadlock). This is not a problem inside other callbacks,
719 * including dispatch callbacks, so we call io_remove_watch_poll
720 * to remove this source. At this point, iwp->src must
721 * be NULL, or we would leak it.
722 *
723 * This would be solved much more elegantly by child sources,
724 * but we support older glib versions that do not have them.
725 */
726 IOWatchPoll *iwp = io_watch_poll_from_source(source);
727 assert(iwp->src == NULL);
728 }
729
730 static GSourceFuncs io_watch_poll_funcs = {
731 .prepare = io_watch_poll_prepare,
732 .check = io_watch_poll_check,
733 .dispatch = io_watch_poll_dispatch,
734 .finalize = io_watch_poll_finalize,
735 };
736
737 /* Can only be used for read */
738 static guint io_add_watch_poll(GIOChannel *channel,
739 IOCanReadHandler *fd_can_read,
740 GIOFunc fd_read,
741 gpointer user_data)
742 {
743 IOWatchPoll *iwp;
744 int tag;
745
746 iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs, sizeof(IOWatchPoll));
747 iwp->fd_can_read = fd_can_read;
748 iwp->opaque = user_data;
749 iwp->channel = channel;
750 iwp->fd_read = (GSourceFunc) fd_read;
751 iwp->src = NULL;
752
753 tag = g_source_attach(&iwp->parent, NULL);
754 g_source_unref(&iwp->parent);
755 return tag;
756 }
757
758 static void io_remove_watch_poll(guint tag)
759 {
760 GSource *source;
761 IOWatchPoll *iwp;
762
763 g_return_if_fail (tag > 0);
764
765 source = g_main_context_find_source_by_id(NULL, tag);
766 g_return_if_fail (source != NULL);
767
768 iwp = io_watch_poll_from_source(source);
769 if (iwp->src) {
770 g_source_destroy(iwp->src);
771 g_source_unref(iwp->src);
772 iwp->src = NULL;
773 }
774 g_source_destroy(&iwp->parent);
775 }
776
777 static void remove_fd_in_watch(CharDriverState *chr)
778 {
779 if (chr->fd_in_tag) {
780 io_remove_watch_poll(chr->fd_in_tag);
781 chr->fd_in_tag = 0;
782 }
783 }
784
785 #ifndef _WIN32
786 static GIOChannel *io_channel_from_fd(int fd)
787 {
788 GIOChannel *chan;
789
790 if (fd == -1) {
791 return NULL;
792 }
793
794 chan = g_io_channel_unix_new(fd);
795
796 g_io_channel_set_encoding(chan, NULL, NULL);
797 g_io_channel_set_buffered(chan, FALSE);
798
799 return chan;
800 }
801 #endif
802
803 static GIOChannel *io_channel_from_socket(int fd)
804 {
805 GIOChannel *chan;
806
807 if (fd == -1) {
808 return NULL;
809 }
810
811 #ifdef _WIN32
812 chan = g_io_channel_win32_new_socket(fd);
813 #else
814 chan = g_io_channel_unix_new(fd);
815 #endif
816
817 g_io_channel_set_encoding(chan, NULL, NULL);
818 g_io_channel_set_buffered(chan, FALSE);
819
820 return chan;
821 }
822
823 static int io_channel_send(GIOChannel *fd, const void *buf, size_t len)
824 {
825 size_t offset = 0;
826 GIOStatus status = G_IO_STATUS_NORMAL;
827
828 while (offset < len && status == G_IO_STATUS_NORMAL) {
829 gsize bytes_written = 0;
830
831 status = g_io_channel_write_chars(fd, buf + offset, len - offset,
832 &bytes_written, NULL);
833 offset += bytes_written;
834 }
835
836 if (offset > 0) {
837 return offset;
838 }
839 switch (status) {
840 case G_IO_STATUS_NORMAL:
841 g_assert(len == 0);
842 return 0;
843 case G_IO_STATUS_AGAIN:
844 errno = EAGAIN;
845 return -1;
846 default:
847 break;
848 }
849 errno = EINVAL;
850 return -1;
851 }
852
853 #ifndef _WIN32
854
855 typedef struct FDCharDriver {
856 CharDriverState *chr;
857 GIOChannel *fd_in, *fd_out;
858 int max_size;
859 QTAILQ_ENTRY(FDCharDriver) node;
860 } FDCharDriver;
861
862 static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
863 {
864 FDCharDriver *s = chr->opaque;
865
866 return io_channel_send(s->fd_out, buf, len);
867 }
868
869 static gboolean fd_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
870 {
871 CharDriverState *chr = opaque;
872 FDCharDriver *s = chr->opaque;
873 int len;
874 uint8_t buf[READ_BUF_LEN];
875 GIOStatus status;
876 gsize bytes_read;
877
878 len = sizeof(buf);
879 if (len > s->max_size) {
880 len = s->max_size;
881 }
882 if (len == 0) {
883 return TRUE;
884 }
885
886 status = g_io_channel_read_chars(chan, (gchar *)buf,
887 len, &bytes_read, NULL);
888 if (status == G_IO_STATUS_EOF) {
889 remove_fd_in_watch(chr);
890 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
891 return FALSE;
892 }
893 if (status == G_IO_STATUS_NORMAL) {
894 qemu_chr_be_write(chr, buf, bytes_read);
895 }
896
897 return TRUE;
898 }
899
900 static int fd_chr_read_poll(void *opaque)
901 {
902 CharDriverState *chr = opaque;
903 FDCharDriver *s = chr->opaque;
904
905 s->max_size = qemu_chr_be_can_write(chr);
906 return s->max_size;
907 }
908
909 static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
910 {
911 FDCharDriver *s = chr->opaque;
912 return g_io_create_watch(s->fd_out, cond);
913 }
914
915 static void fd_chr_update_read_handler(CharDriverState *chr)
916 {
917 FDCharDriver *s = chr->opaque;
918
919 remove_fd_in_watch(chr);
920 if (s->fd_in) {
921 chr->fd_in_tag = io_add_watch_poll(s->fd_in, fd_chr_read_poll,
922 fd_chr_read, chr);
923 }
924 }
925
926 static void fd_chr_close(struct CharDriverState *chr)
927 {
928 FDCharDriver *s = chr->opaque;
929
930 remove_fd_in_watch(chr);
931 if (s->fd_in) {
932 g_io_channel_unref(s->fd_in);
933 }
934 if (s->fd_out) {
935 g_io_channel_unref(s->fd_out);
936 }
937
938 g_free(s);
939 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
940 }
941
942 /* open a character device to a unix fd */
943 static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
944 {
945 CharDriverState *chr;
946 FDCharDriver *s;
947
948 chr = g_malloc0(sizeof(CharDriverState));
949 s = g_malloc0(sizeof(FDCharDriver));
950 s->fd_in = io_channel_from_fd(fd_in);
951 s->fd_out = io_channel_from_fd(fd_out);
952 fcntl(fd_out, F_SETFL, O_NONBLOCK);
953 s->chr = chr;
954 chr->opaque = s;
955 chr->chr_add_watch = fd_chr_add_watch;
956 chr->chr_write = fd_chr_write;
957 chr->chr_update_read_handler = fd_chr_update_read_handler;
958 chr->chr_close = fd_chr_close;
959
960 return chr;
961 }
962
963 static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
964 {
965 int fd_in, fd_out;
966 char filename_in[256], filename_out[256];
967 const char *filename = opts->device;
968
969 if (filename == NULL) {
970 fprintf(stderr, "chardev: pipe: no filename given\n");
971 return NULL;
972 }
973
974 snprintf(filename_in, 256, "%s.in", filename);
975 snprintf(filename_out, 256, "%s.out", filename);
976 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
977 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
978 if (fd_in < 0 || fd_out < 0) {
979 if (fd_in >= 0)
980 close(fd_in);
981 if (fd_out >= 0)
982 close(fd_out);
983 TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
984 if (fd_in < 0) {
985 return NULL;
986 }
987 }
988 return qemu_chr_open_fd(fd_in, fd_out);
989 }
990
991 /* init terminal so that we can grab keys */
992 static struct termios oldtty;
993 static int old_fd0_flags;
994 static bool stdio_allow_signal;
995
996 static void term_exit(void)
997 {
998 tcsetattr (0, TCSANOW, &oldtty);
999 fcntl(0, F_SETFL, old_fd0_flags);
1000 }
1001
1002 static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
1003 {
1004 struct termios tty;
1005
1006 tty = oldtty;
1007 if (!echo) {
1008 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1009 |INLCR|IGNCR|ICRNL|IXON);
1010 tty.c_oflag |= OPOST;
1011 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
1012 tty.c_cflag &= ~(CSIZE|PARENB);
1013 tty.c_cflag |= CS8;
1014 tty.c_cc[VMIN] = 1;
1015 tty.c_cc[VTIME] = 0;
1016 }
1017 if (!stdio_allow_signal)
1018 tty.c_lflag &= ~ISIG;
1019
1020 tcsetattr (0, TCSANOW, &tty);
1021 }
1022
1023 static void qemu_chr_close_stdio(struct CharDriverState *chr)
1024 {
1025 term_exit();
1026 fd_chr_close(chr);
1027 }
1028
1029 static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
1030 {
1031 CharDriverState *chr;
1032
1033 if (is_daemonized()) {
1034 error_report("cannot use stdio with -daemonize");
1035 return NULL;
1036 }
1037 old_fd0_flags = fcntl(0, F_GETFL);
1038 tcgetattr (0, &oldtty);
1039 fcntl(0, F_SETFL, O_NONBLOCK);
1040 atexit(term_exit);
1041
1042 chr = qemu_chr_open_fd(0, 1);
1043 chr->chr_close = qemu_chr_close_stdio;
1044 chr->chr_set_echo = qemu_chr_set_echo_stdio;
1045 if (opts->has_signal) {
1046 stdio_allow_signal = opts->signal;
1047 }
1048 qemu_chr_fe_set_echo(chr, false);
1049
1050 return chr;
1051 }
1052
1053 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
1054 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
1055 || defined(__GLIBC__)
1056
1057 #define HAVE_CHARDEV_TTY 1
1058
1059 typedef struct {
1060 GIOChannel *fd;
1061 int connected;
1062 int read_bytes;
1063 guint timer_tag;
1064 } PtyCharDriver;
1065
1066 static void pty_chr_update_read_handler(CharDriverState *chr);
1067 static void pty_chr_state(CharDriverState *chr, int connected);
1068
1069 static gboolean pty_chr_timer(gpointer opaque)
1070 {
1071 struct CharDriverState *chr = opaque;
1072 PtyCharDriver *s = chr->opaque;
1073
1074 s->timer_tag = 0;
1075 if (!s->connected) {
1076 /* Next poll ... */
1077 pty_chr_update_read_handler(chr);
1078 }
1079 return FALSE;
1080 }
1081
1082 static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
1083 {
1084 PtyCharDriver *s = chr->opaque;
1085
1086 if (s->timer_tag) {
1087 g_source_remove(s->timer_tag);
1088 s->timer_tag = 0;
1089 }
1090
1091 if (ms == 1000) {
1092 s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
1093 } else {
1094 s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
1095 }
1096 }
1097
1098 static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1099 {
1100 PtyCharDriver *s = chr->opaque;
1101
1102 if (!s->connected) {
1103 /* guest sends data, check for (re-)connect */
1104 pty_chr_update_read_handler(chr);
1105 return 0;
1106 }
1107 return io_channel_send(s->fd, buf, len);
1108 }
1109
1110 static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1111 {
1112 PtyCharDriver *s = chr->opaque;
1113 return g_io_create_watch(s->fd, cond);
1114 }
1115
1116 static int pty_chr_read_poll(void *opaque)
1117 {
1118 CharDriverState *chr = opaque;
1119 PtyCharDriver *s = chr->opaque;
1120
1121 s->read_bytes = qemu_chr_be_can_write(chr);
1122 return s->read_bytes;
1123 }
1124
1125 static gboolean pty_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
1126 {
1127 CharDriverState *chr = opaque;
1128 PtyCharDriver *s = chr->opaque;
1129 gsize size, len;
1130 uint8_t buf[READ_BUF_LEN];
1131 GIOStatus status;
1132
1133 len = sizeof(buf);
1134 if (len > s->read_bytes)
1135 len = s->read_bytes;
1136 if (len == 0) {
1137 return TRUE;
1138 }
1139 status = g_io_channel_read_chars(s->fd, (gchar *)buf, len, &size, NULL);
1140 if (status != G_IO_STATUS_NORMAL) {
1141 pty_chr_state(chr, 0);
1142 return FALSE;
1143 } else {
1144 pty_chr_state(chr, 1);
1145 qemu_chr_be_write(chr, buf, size);
1146 }
1147 return TRUE;
1148 }
1149
1150 static void pty_chr_update_read_handler(CharDriverState *chr)
1151 {
1152 PtyCharDriver *s = chr->opaque;
1153 GPollFD pfd;
1154
1155 pfd.fd = g_io_channel_unix_get_fd(s->fd);
1156 pfd.events = G_IO_OUT;
1157 pfd.revents = 0;
1158 g_poll(&pfd, 1, 0);
1159 if (pfd.revents & G_IO_HUP) {
1160 pty_chr_state(chr, 0);
1161 } else {
1162 pty_chr_state(chr, 1);
1163 }
1164 }
1165
1166 static void pty_chr_state(CharDriverState *chr, int connected)
1167 {
1168 PtyCharDriver *s = chr->opaque;
1169
1170 if (!connected) {
1171 remove_fd_in_watch(chr);
1172 s->connected = 0;
1173 /* (re-)connect poll interval for idle guests: once per second.
1174 * We check more frequently in case the guests sends data to
1175 * the virtual device linked to our pty. */
1176 pty_chr_rearm_timer(chr, 1000);
1177 } else {
1178 if (s->timer_tag) {
1179 g_source_remove(s->timer_tag);
1180 s->timer_tag = 0;
1181 }
1182 if (!s->connected) {
1183 s->connected = 1;
1184 qemu_chr_be_generic_open(chr);
1185 }
1186 if (!chr->fd_in_tag) {
1187 chr->fd_in_tag = io_add_watch_poll(s->fd, pty_chr_read_poll,
1188 pty_chr_read, chr);
1189 }
1190 }
1191 }
1192
1193 static void pty_chr_close(struct CharDriverState *chr)
1194 {
1195 PtyCharDriver *s = chr->opaque;
1196 int fd;
1197
1198 remove_fd_in_watch(chr);
1199 fd = g_io_channel_unix_get_fd(s->fd);
1200 g_io_channel_unref(s->fd);
1201 close(fd);
1202 if (s->timer_tag) {
1203 g_source_remove(s->timer_tag);
1204 s->timer_tag = 0;
1205 }
1206 g_free(s);
1207 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1208 }
1209
1210 static CharDriverState *qemu_chr_open_pty(const char *id,
1211 ChardevReturn *ret)
1212 {
1213 CharDriverState *chr;
1214 PtyCharDriver *s;
1215 int master_fd, slave_fd;
1216 char pty_name[PATH_MAX];
1217
1218 master_fd = qemu_openpty_raw(&slave_fd, pty_name);
1219 if (master_fd < 0) {
1220 return NULL;
1221 }
1222
1223 close(slave_fd);
1224
1225 chr = g_malloc0(sizeof(CharDriverState));
1226
1227 chr->filename = g_strdup_printf("pty:%s", pty_name);
1228 ret->pty = g_strdup(pty_name);
1229 ret->has_pty = true;
1230
1231 fprintf(stderr, "char device redirected to %s (label %s)\n",
1232 pty_name, id);
1233
1234 s = g_malloc0(sizeof(PtyCharDriver));
1235 chr->opaque = s;
1236 chr->chr_write = pty_chr_write;
1237 chr->chr_update_read_handler = pty_chr_update_read_handler;
1238 chr->chr_close = pty_chr_close;
1239 chr->chr_add_watch = pty_chr_add_watch;
1240 chr->explicit_be_open = true;
1241
1242 s->fd = io_channel_from_fd(master_fd);
1243 s->timer_tag = 0;
1244
1245 return chr;
1246 }
1247
1248 static void tty_serial_init(int fd, int speed,
1249 int parity, int data_bits, int stop_bits)
1250 {
1251 struct termios tty;
1252 speed_t spd;
1253
1254 #if 0
1255 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1256 speed, parity, data_bits, stop_bits);
1257 #endif
1258 tcgetattr (fd, &tty);
1259
1260 #define check_speed(val) if (speed <= val) { spd = B##val; break; }
1261 speed = speed * 10 / 11;
1262 do {
1263 check_speed(50);
1264 check_speed(75);
1265 check_speed(110);
1266 check_speed(134);
1267 check_speed(150);
1268 check_speed(200);
1269 check_speed(300);
1270 check_speed(600);
1271 check_speed(1200);
1272 check_speed(1800);
1273 check_speed(2400);
1274 check_speed(4800);
1275 check_speed(9600);
1276 check_speed(19200);
1277 check_speed(38400);
1278 /* Non-Posix values follow. They may be unsupported on some systems. */
1279 check_speed(57600);
1280 check_speed(115200);
1281 #ifdef B230400
1282 check_speed(230400);
1283 #endif
1284 #ifdef B460800
1285 check_speed(460800);
1286 #endif
1287 #ifdef B500000
1288 check_speed(500000);
1289 #endif
1290 #ifdef B576000
1291 check_speed(576000);
1292 #endif
1293 #ifdef B921600
1294 check_speed(921600);
1295 #endif
1296 #ifdef B1000000
1297 check_speed(1000000);
1298 #endif
1299 #ifdef B1152000
1300 check_speed(1152000);
1301 #endif
1302 #ifdef B1500000
1303 check_speed(1500000);
1304 #endif
1305 #ifdef B2000000
1306 check_speed(2000000);
1307 #endif
1308 #ifdef B2500000
1309 check_speed(2500000);
1310 #endif
1311 #ifdef B3000000
1312 check_speed(3000000);
1313 #endif
1314 #ifdef B3500000
1315 check_speed(3500000);
1316 #endif
1317 #ifdef B4000000
1318 check_speed(4000000);
1319 #endif
1320 spd = B115200;
1321 } while (0);
1322
1323 cfsetispeed(&tty, spd);
1324 cfsetospeed(&tty, spd);
1325
1326 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1327 |INLCR|IGNCR|ICRNL|IXON);
1328 tty.c_oflag |= OPOST;
1329 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1330 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1331 switch(data_bits) {
1332 default:
1333 case 8:
1334 tty.c_cflag |= CS8;
1335 break;
1336 case 7:
1337 tty.c_cflag |= CS7;
1338 break;
1339 case 6:
1340 tty.c_cflag |= CS6;
1341 break;
1342 case 5:
1343 tty.c_cflag |= CS5;
1344 break;
1345 }
1346 switch(parity) {
1347 default:
1348 case 'N':
1349 break;
1350 case 'E':
1351 tty.c_cflag |= PARENB;
1352 break;
1353 case 'O':
1354 tty.c_cflag |= PARENB | PARODD;
1355 break;
1356 }
1357 if (stop_bits == 2)
1358 tty.c_cflag |= CSTOPB;
1359
1360 tcsetattr (fd, TCSANOW, &tty);
1361 }
1362
1363 static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1364 {
1365 FDCharDriver *s = chr->opaque;
1366
1367 switch(cmd) {
1368 case CHR_IOCTL_SERIAL_SET_PARAMS:
1369 {
1370 QEMUSerialSetParams *ssp = arg;
1371 tty_serial_init(g_io_channel_unix_get_fd(s->fd_in),
1372 ssp->speed, ssp->parity,
1373 ssp->data_bits, ssp->stop_bits);
1374 }
1375 break;
1376 case CHR_IOCTL_SERIAL_SET_BREAK:
1377 {
1378 int enable = *(int *)arg;
1379 if (enable) {
1380 tcsendbreak(g_io_channel_unix_get_fd(s->fd_in), 1);
1381 }
1382 }
1383 break;
1384 case CHR_IOCTL_SERIAL_GET_TIOCM:
1385 {
1386 int sarg = 0;
1387 int *targ = (int *)arg;
1388 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &sarg);
1389 *targ = 0;
1390 if (sarg & TIOCM_CTS)
1391 *targ |= CHR_TIOCM_CTS;
1392 if (sarg & TIOCM_CAR)
1393 *targ |= CHR_TIOCM_CAR;
1394 if (sarg & TIOCM_DSR)
1395 *targ |= CHR_TIOCM_DSR;
1396 if (sarg & TIOCM_RI)
1397 *targ |= CHR_TIOCM_RI;
1398 if (sarg & TIOCM_DTR)
1399 *targ |= CHR_TIOCM_DTR;
1400 if (sarg & TIOCM_RTS)
1401 *targ |= CHR_TIOCM_RTS;
1402 }
1403 break;
1404 case CHR_IOCTL_SERIAL_SET_TIOCM:
1405 {
1406 int sarg = *(int *)arg;
1407 int targ = 0;
1408 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &targ);
1409 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1410 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1411 if (sarg & CHR_TIOCM_CTS)
1412 targ |= TIOCM_CTS;
1413 if (sarg & CHR_TIOCM_CAR)
1414 targ |= TIOCM_CAR;
1415 if (sarg & CHR_TIOCM_DSR)
1416 targ |= TIOCM_DSR;
1417 if (sarg & CHR_TIOCM_RI)
1418 targ |= TIOCM_RI;
1419 if (sarg & CHR_TIOCM_DTR)
1420 targ |= TIOCM_DTR;
1421 if (sarg & CHR_TIOCM_RTS)
1422 targ |= TIOCM_RTS;
1423 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMSET, &targ);
1424 }
1425 break;
1426 default:
1427 return -ENOTSUP;
1428 }
1429 return 0;
1430 }
1431
1432 static void qemu_chr_close_tty(CharDriverState *chr)
1433 {
1434 FDCharDriver *s = chr->opaque;
1435 int fd = -1;
1436
1437 if (s) {
1438 fd = g_io_channel_unix_get_fd(s->fd_in);
1439 }
1440
1441 fd_chr_close(chr);
1442
1443 if (fd >= 0) {
1444 close(fd);
1445 }
1446 }
1447
1448 static CharDriverState *qemu_chr_open_tty_fd(int fd)
1449 {
1450 CharDriverState *chr;
1451
1452 tty_serial_init(fd, 115200, 'N', 8, 1);
1453 chr = qemu_chr_open_fd(fd, fd);
1454 chr->chr_ioctl = tty_serial_ioctl;
1455 chr->chr_close = qemu_chr_close_tty;
1456 return chr;
1457 }
1458 #endif /* __linux__ || __sun__ */
1459
1460 #if defined(__linux__)
1461
1462 #define HAVE_CHARDEV_PARPORT 1
1463
1464 typedef struct {
1465 int fd;
1466 int mode;
1467 } ParallelCharDriver;
1468
1469 static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1470 {
1471 if (s->mode != mode) {
1472 int m = mode;
1473 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1474 return 0;
1475 s->mode = mode;
1476 }
1477 return 1;
1478 }
1479
1480 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1481 {
1482 ParallelCharDriver *drv = chr->opaque;
1483 int fd = drv->fd;
1484 uint8_t b;
1485
1486 switch(cmd) {
1487 case CHR_IOCTL_PP_READ_DATA:
1488 if (ioctl(fd, PPRDATA, &b) < 0)
1489 return -ENOTSUP;
1490 *(uint8_t *)arg = b;
1491 break;
1492 case CHR_IOCTL_PP_WRITE_DATA:
1493 b = *(uint8_t *)arg;
1494 if (ioctl(fd, PPWDATA, &b) < 0)
1495 return -ENOTSUP;
1496 break;
1497 case CHR_IOCTL_PP_READ_CONTROL:
1498 if (ioctl(fd, PPRCONTROL, &b) < 0)
1499 return -ENOTSUP;
1500 /* Linux gives only the lowest bits, and no way to know data
1501 direction! For better compatibility set the fixed upper
1502 bits. */
1503 *(uint8_t *)arg = b | 0xc0;
1504 break;
1505 case CHR_IOCTL_PP_WRITE_CONTROL:
1506 b = *(uint8_t *)arg;
1507 if (ioctl(fd, PPWCONTROL, &b) < 0)
1508 return -ENOTSUP;
1509 break;
1510 case CHR_IOCTL_PP_READ_STATUS:
1511 if (ioctl(fd, PPRSTATUS, &b) < 0)
1512 return -ENOTSUP;
1513 *(uint8_t *)arg = b;
1514 break;
1515 case CHR_IOCTL_PP_DATA_DIR:
1516 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1517 return -ENOTSUP;
1518 break;
1519 case CHR_IOCTL_PP_EPP_READ_ADDR:
1520 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
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_READ:
1529 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1530 struct ParallelIOArg *parg = arg;
1531 int n = read(fd, parg->buffer, parg->count);
1532 if (n != parg->count) {
1533 return -EIO;
1534 }
1535 }
1536 break;
1537 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1538 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
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 case CHR_IOCTL_PP_EPP_WRITE:
1547 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1548 struct ParallelIOArg *parg = arg;
1549 int n = write(fd, parg->buffer, parg->count);
1550 if (n != parg->count) {
1551 return -EIO;
1552 }
1553 }
1554 break;
1555 default:
1556 return -ENOTSUP;
1557 }
1558 return 0;
1559 }
1560
1561 static void pp_close(CharDriverState *chr)
1562 {
1563 ParallelCharDriver *drv = chr->opaque;
1564 int fd = drv->fd;
1565
1566 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1567 ioctl(fd, PPRELEASE);
1568 close(fd);
1569 g_free(drv);
1570 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1571 }
1572
1573 static CharDriverState *qemu_chr_open_pp_fd(int fd)
1574 {
1575 CharDriverState *chr;
1576 ParallelCharDriver *drv;
1577
1578 if (ioctl(fd, PPCLAIM) < 0) {
1579 close(fd);
1580 return NULL;
1581 }
1582
1583 drv = g_malloc0(sizeof(ParallelCharDriver));
1584 drv->fd = fd;
1585 drv->mode = IEEE1284_MODE_COMPAT;
1586
1587 chr = g_malloc0(sizeof(CharDriverState));
1588 chr->chr_write = null_chr_write;
1589 chr->chr_ioctl = pp_ioctl;
1590 chr->chr_close = pp_close;
1591 chr->opaque = drv;
1592
1593 return chr;
1594 }
1595 #endif /* __linux__ */
1596
1597 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
1598
1599 #define HAVE_CHARDEV_PARPORT 1
1600
1601 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1602 {
1603 int fd = (int)(intptr_t)chr->opaque;
1604 uint8_t b;
1605
1606 switch(cmd) {
1607 case CHR_IOCTL_PP_READ_DATA:
1608 if (ioctl(fd, PPIGDATA, &b) < 0)
1609 return -ENOTSUP;
1610 *(uint8_t *)arg = b;
1611 break;
1612 case CHR_IOCTL_PP_WRITE_DATA:
1613 b = *(uint8_t *)arg;
1614 if (ioctl(fd, PPISDATA, &b) < 0)
1615 return -ENOTSUP;
1616 break;
1617 case CHR_IOCTL_PP_READ_CONTROL:
1618 if (ioctl(fd, PPIGCTRL, &b) < 0)
1619 return -ENOTSUP;
1620 *(uint8_t *)arg = b;
1621 break;
1622 case CHR_IOCTL_PP_WRITE_CONTROL:
1623 b = *(uint8_t *)arg;
1624 if (ioctl(fd, PPISCTRL, &b) < 0)
1625 return -ENOTSUP;
1626 break;
1627 case CHR_IOCTL_PP_READ_STATUS:
1628 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1629 return -ENOTSUP;
1630 *(uint8_t *)arg = b;
1631 break;
1632 default:
1633 return -ENOTSUP;
1634 }
1635 return 0;
1636 }
1637
1638 static CharDriverState *qemu_chr_open_pp_fd(int fd)
1639 {
1640 CharDriverState *chr;
1641
1642 chr = g_malloc0(sizeof(CharDriverState));
1643 chr->opaque = (void *)(intptr_t)fd;
1644 chr->chr_write = null_chr_write;
1645 chr->chr_ioctl = pp_ioctl;
1646 chr->explicit_be_open = true;
1647 return chr;
1648 }
1649 #endif
1650
1651 #else /* _WIN32 */
1652
1653 typedef struct {
1654 int max_size;
1655 HANDLE hcom, hrecv, hsend;
1656 OVERLAPPED orecv, osend;
1657 BOOL fpipe;
1658 DWORD len;
1659 } WinCharState;
1660
1661 typedef struct {
1662 HANDLE hStdIn;
1663 HANDLE hInputReadyEvent;
1664 HANDLE hInputDoneEvent;
1665 HANDLE hInputThread;
1666 uint8_t win_stdio_buf;
1667 } WinStdioCharState;
1668
1669 #define NSENDBUF 2048
1670 #define NRECVBUF 2048
1671 #define MAXCONNECT 1
1672 #define NTIMEOUT 5000
1673
1674 static int win_chr_poll(void *opaque);
1675 static int win_chr_pipe_poll(void *opaque);
1676
1677 static void win_chr_close(CharDriverState *chr)
1678 {
1679 WinCharState *s = chr->opaque;
1680
1681 if (s->hsend) {
1682 CloseHandle(s->hsend);
1683 s->hsend = NULL;
1684 }
1685 if (s->hrecv) {
1686 CloseHandle(s->hrecv);
1687 s->hrecv = NULL;
1688 }
1689 if (s->hcom) {
1690 CloseHandle(s->hcom);
1691 s->hcom = NULL;
1692 }
1693 if (s->fpipe)
1694 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1695 else
1696 qemu_del_polling_cb(win_chr_poll, chr);
1697
1698 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1699 }
1700
1701 static int win_chr_init(CharDriverState *chr, const char *filename)
1702 {
1703 WinCharState *s = chr->opaque;
1704 COMMCONFIG comcfg;
1705 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1706 COMSTAT comstat;
1707 DWORD size;
1708 DWORD err;
1709
1710 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1711 if (!s->hsend) {
1712 fprintf(stderr, "Failed CreateEvent\n");
1713 goto fail;
1714 }
1715 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1716 if (!s->hrecv) {
1717 fprintf(stderr, "Failed CreateEvent\n");
1718 goto fail;
1719 }
1720
1721 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1722 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1723 if (s->hcom == INVALID_HANDLE_VALUE) {
1724 fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
1725 s->hcom = NULL;
1726 goto fail;
1727 }
1728
1729 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
1730 fprintf(stderr, "Failed SetupComm\n");
1731 goto fail;
1732 }
1733
1734 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1735 size = sizeof(COMMCONFIG);
1736 GetDefaultCommConfig(filename, &comcfg, &size);
1737 comcfg.dcb.DCBlength = sizeof(DCB);
1738 CommConfigDialog(filename, NULL, &comcfg);
1739
1740 if (!SetCommState(s->hcom, &comcfg.dcb)) {
1741 fprintf(stderr, "Failed SetCommState\n");
1742 goto fail;
1743 }
1744
1745 if (!SetCommMask(s->hcom, EV_ERR)) {
1746 fprintf(stderr, "Failed SetCommMask\n");
1747 goto fail;
1748 }
1749
1750 cto.ReadIntervalTimeout = MAXDWORD;
1751 if (!SetCommTimeouts(s->hcom, &cto)) {
1752 fprintf(stderr, "Failed SetCommTimeouts\n");
1753 goto fail;
1754 }
1755
1756 if (!ClearCommError(s->hcom, &err, &comstat)) {
1757 fprintf(stderr, "Failed ClearCommError\n");
1758 goto fail;
1759 }
1760 qemu_add_polling_cb(win_chr_poll, chr);
1761 return 0;
1762
1763 fail:
1764 win_chr_close(chr);
1765 return -1;
1766 }
1767
1768 static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1769 {
1770 WinCharState *s = chr->opaque;
1771 DWORD len, ret, size, err;
1772
1773 len = len1;
1774 ZeroMemory(&s->osend, sizeof(s->osend));
1775 s->osend.hEvent = s->hsend;
1776 while (len > 0) {
1777 if (s->hsend)
1778 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1779 else
1780 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1781 if (!ret) {
1782 err = GetLastError();
1783 if (err == ERROR_IO_PENDING) {
1784 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1785 if (ret) {
1786 buf += size;
1787 len -= size;
1788 } else {
1789 break;
1790 }
1791 } else {
1792 break;
1793 }
1794 } else {
1795 buf += size;
1796 len -= size;
1797 }
1798 }
1799 return len1 - len;
1800 }
1801
1802 static int win_chr_read_poll(CharDriverState *chr)
1803 {
1804 WinCharState *s = chr->opaque;
1805
1806 s->max_size = qemu_chr_be_can_write(chr);
1807 return s->max_size;
1808 }
1809
1810 static void win_chr_readfile(CharDriverState *chr)
1811 {
1812 WinCharState *s = chr->opaque;
1813 int ret, err;
1814 uint8_t buf[READ_BUF_LEN];
1815 DWORD size;
1816
1817 ZeroMemory(&s->orecv, sizeof(s->orecv));
1818 s->orecv.hEvent = s->hrecv;
1819 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
1820 if (!ret) {
1821 err = GetLastError();
1822 if (err == ERROR_IO_PENDING) {
1823 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
1824 }
1825 }
1826
1827 if (size > 0) {
1828 qemu_chr_be_write(chr, buf, size);
1829 }
1830 }
1831
1832 static void win_chr_read(CharDriverState *chr)
1833 {
1834 WinCharState *s = chr->opaque;
1835
1836 if (s->len > s->max_size)
1837 s->len = s->max_size;
1838 if (s->len == 0)
1839 return;
1840
1841 win_chr_readfile(chr);
1842 }
1843
1844 static int win_chr_poll(void *opaque)
1845 {
1846 CharDriverState *chr = opaque;
1847 WinCharState *s = chr->opaque;
1848 COMSTAT status;
1849 DWORD comerr;
1850
1851 ClearCommError(s->hcom, &comerr, &status);
1852 if (status.cbInQue > 0) {
1853 s->len = status.cbInQue;
1854 win_chr_read_poll(chr);
1855 win_chr_read(chr);
1856 return 1;
1857 }
1858 return 0;
1859 }
1860
1861 static CharDriverState *qemu_chr_open_win_path(const char *filename)
1862 {
1863 CharDriverState *chr;
1864 WinCharState *s;
1865
1866 chr = g_malloc0(sizeof(CharDriverState));
1867 s = g_malloc0(sizeof(WinCharState));
1868 chr->opaque = s;
1869 chr->chr_write = win_chr_write;
1870 chr->chr_close = win_chr_close;
1871
1872 if (win_chr_init(chr, filename) < 0) {
1873 g_free(s);
1874 g_free(chr);
1875 return NULL;
1876 }
1877 return chr;
1878 }
1879
1880 static int win_chr_pipe_poll(void *opaque)
1881 {
1882 CharDriverState *chr = opaque;
1883 WinCharState *s = chr->opaque;
1884 DWORD size;
1885
1886 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
1887 if (size > 0) {
1888 s->len = size;
1889 win_chr_read_poll(chr);
1890 win_chr_read(chr);
1891 return 1;
1892 }
1893 return 0;
1894 }
1895
1896 static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
1897 {
1898 WinCharState *s = chr->opaque;
1899 OVERLAPPED ov;
1900 int ret;
1901 DWORD size;
1902 char openname[256];
1903
1904 s->fpipe = TRUE;
1905
1906 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1907 if (!s->hsend) {
1908 fprintf(stderr, "Failed CreateEvent\n");
1909 goto fail;
1910 }
1911 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1912 if (!s->hrecv) {
1913 fprintf(stderr, "Failed CreateEvent\n");
1914 goto fail;
1915 }
1916
1917 snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
1918 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
1919 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
1920 PIPE_WAIT,
1921 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
1922 if (s->hcom == INVALID_HANDLE_VALUE) {
1923 fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
1924 s->hcom = NULL;
1925 goto fail;
1926 }
1927
1928 ZeroMemory(&ov, sizeof(ov));
1929 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
1930 ret = ConnectNamedPipe(s->hcom, &ov);
1931 if (ret) {
1932 fprintf(stderr, "Failed ConnectNamedPipe\n");
1933 goto fail;
1934 }
1935
1936 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
1937 if (!ret) {
1938 fprintf(stderr, "Failed GetOverlappedResult\n");
1939 if (ov.hEvent) {
1940 CloseHandle(ov.hEvent);
1941 ov.hEvent = NULL;
1942 }
1943 goto fail;
1944 }
1945
1946 if (ov.hEvent) {
1947 CloseHandle(ov.hEvent);
1948 ov.hEvent = NULL;
1949 }
1950 qemu_add_polling_cb(win_chr_pipe_poll, chr);
1951 return 0;
1952
1953 fail:
1954 win_chr_close(chr);
1955 return -1;
1956 }
1957
1958
1959 static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
1960 {
1961 const char *filename = opts->device;
1962 CharDriverState *chr;
1963 WinCharState *s;
1964
1965 chr = g_malloc0(sizeof(CharDriverState));
1966 s = g_malloc0(sizeof(WinCharState));
1967 chr->opaque = s;
1968 chr->chr_write = win_chr_write;
1969 chr->chr_close = win_chr_close;
1970
1971 if (win_chr_pipe_init(chr, filename) < 0) {
1972 g_free(s);
1973 g_free(chr);
1974 return NULL;
1975 }
1976 return chr;
1977 }
1978
1979 static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
1980 {
1981 CharDriverState *chr;
1982 WinCharState *s;
1983
1984 chr = g_malloc0(sizeof(CharDriverState));
1985 s = g_malloc0(sizeof(WinCharState));
1986 s->hcom = fd_out;
1987 chr->opaque = s;
1988 chr->chr_write = win_chr_write;
1989 return chr;
1990 }
1991
1992 static CharDriverState *qemu_chr_open_win_con(void)
1993 {
1994 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
1995 }
1996
1997 static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
1998 {
1999 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
2000 DWORD dwSize;
2001 int len1;
2002
2003 len1 = len;
2004
2005 while (len1 > 0) {
2006 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
2007 break;
2008 }
2009 buf += dwSize;
2010 len1 -= dwSize;
2011 }
2012
2013 return len - len1;
2014 }
2015
2016 static void win_stdio_wait_func(void *opaque)
2017 {
2018 CharDriverState *chr = opaque;
2019 WinStdioCharState *stdio = chr->opaque;
2020 INPUT_RECORD buf[4];
2021 int ret;
2022 DWORD dwSize;
2023 int i;
2024
2025 ret = ReadConsoleInput(stdio->hStdIn, buf, ARRAY_SIZE(buf), &dwSize);
2026
2027 if (!ret) {
2028 /* Avoid error storm */
2029 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2030 return;
2031 }
2032
2033 for (i = 0; i < dwSize; i++) {
2034 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
2035
2036 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
2037 int j;
2038 if (kev->uChar.AsciiChar != 0) {
2039 for (j = 0; j < kev->wRepeatCount; j++) {
2040 if (qemu_chr_be_can_write(chr)) {
2041 uint8_t c = kev->uChar.AsciiChar;
2042 qemu_chr_be_write(chr, &c, 1);
2043 }
2044 }
2045 }
2046 }
2047 }
2048 }
2049
2050 static DWORD WINAPI win_stdio_thread(LPVOID param)
2051 {
2052 CharDriverState *chr = param;
2053 WinStdioCharState *stdio = chr->opaque;
2054 int ret;
2055 DWORD dwSize;
2056
2057 while (1) {
2058
2059 /* Wait for one byte */
2060 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
2061
2062 /* Exit in case of error, continue if nothing read */
2063 if (!ret) {
2064 break;
2065 }
2066 if (!dwSize) {
2067 continue;
2068 }
2069
2070 /* Some terminal emulator returns \r\n for Enter, just pass \n */
2071 if (stdio->win_stdio_buf == '\r') {
2072 continue;
2073 }
2074
2075 /* Signal the main thread and wait until the byte was eaten */
2076 if (!SetEvent(stdio->hInputReadyEvent)) {
2077 break;
2078 }
2079 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
2080 != WAIT_OBJECT_0) {
2081 break;
2082 }
2083 }
2084
2085 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2086 return 0;
2087 }
2088
2089 static void win_stdio_thread_wait_func(void *opaque)
2090 {
2091 CharDriverState *chr = opaque;
2092 WinStdioCharState *stdio = chr->opaque;
2093
2094 if (qemu_chr_be_can_write(chr)) {
2095 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
2096 }
2097
2098 SetEvent(stdio->hInputDoneEvent);
2099 }
2100
2101 static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
2102 {
2103 WinStdioCharState *stdio = chr->opaque;
2104 DWORD dwMode = 0;
2105
2106 GetConsoleMode(stdio->hStdIn, &dwMode);
2107
2108 if (echo) {
2109 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
2110 } else {
2111 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
2112 }
2113 }
2114
2115 static void win_stdio_close(CharDriverState *chr)
2116 {
2117 WinStdioCharState *stdio = chr->opaque;
2118
2119 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
2120 CloseHandle(stdio->hInputReadyEvent);
2121 }
2122 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
2123 CloseHandle(stdio->hInputDoneEvent);
2124 }
2125 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
2126 TerminateThread(stdio->hInputThread, 0);
2127 }
2128
2129 g_free(chr->opaque);
2130 g_free(chr);
2131 }
2132
2133 static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
2134 {
2135 CharDriverState *chr;
2136 WinStdioCharState *stdio;
2137 DWORD dwMode;
2138 int is_console = 0;
2139
2140 chr = g_malloc0(sizeof(CharDriverState));
2141 stdio = g_malloc0(sizeof(WinStdioCharState));
2142
2143 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
2144 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
2145 fprintf(stderr, "cannot open stdio: invalid handle\n");
2146 exit(1);
2147 }
2148
2149 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
2150
2151 chr->opaque = stdio;
2152 chr->chr_write = win_stdio_write;
2153 chr->chr_close = win_stdio_close;
2154
2155 if (is_console) {
2156 if (qemu_add_wait_object(stdio->hStdIn,
2157 win_stdio_wait_func, chr)) {
2158 fprintf(stderr, "qemu_add_wait_object: failed\n");
2159 }
2160 } else {
2161 DWORD dwId;
2162
2163 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2164 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2165 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
2166 chr, 0, &dwId);
2167
2168 if (stdio->hInputThread == INVALID_HANDLE_VALUE
2169 || stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
2170 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
2171 fprintf(stderr, "cannot create stdio thread or event\n");
2172 exit(1);
2173 }
2174 if (qemu_add_wait_object(stdio->hInputReadyEvent,
2175 win_stdio_thread_wait_func, chr)) {
2176 fprintf(stderr, "qemu_add_wait_object: failed\n");
2177 }
2178 }
2179
2180 dwMode |= ENABLE_LINE_INPUT;
2181
2182 if (is_console) {
2183 /* set the terminal in raw mode */
2184 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2185 dwMode |= ENABLE_PROCESSED_INPUT;
2186 }
2187
2188 SetConsoleMode(stdio->hStdIn, dwMode);
2189
2190 chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
2191 qemu_chr_fe_set_echo(chr, false);
2192
2193 return chr;
2194 }
2195 #endif /* !_WIN32 */
2196
2197
2198 /***********************************************************/
2199 /* UDP Net console */
2200
2201 typedef struct {
2202 int fd;
2203 GIOChannel *chan;
2204 uint8_t buf[READ_BUF_LEN];
2205 int bufcnt;
2206 int bufptr;
2207 int max_size;
2208 } NetCharDriver;
2209
2210 static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2211 {
2212 NetCharDriver *s = chr->opaque;
2213 gsize bytes_written;
2214 GIOStatus status;
2215
2216 status = g_io_channel_write_chars(s->chan, (const gchar *)buf, len, &bytes_written, NULL);
2217 if (status == G_IO_STATUS_EOF) {
2218 return 0;
2219 } else if (status != G_IO_STATUS_NORMAL) {
2220 return -1;
2221 }
2222
2223 return bytes_written;
2224 }
2225
2226 static int udp_chr_read_poll(void *opaque)
2227 {
2228 CharDriverState *chr = opaque;
2229 NetCharDriver *s = chr->opaque;
2230
2231 s->max_size = qemu_chr_be_can_write(chr);
2232
2233 /* If there were any stray characters in the queue process them
2234 * first
2235 */
2236 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
2237 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
2238 s->bufptr++;
2239 s->max_size = qemu_chr_be_can_write(chr);
2240 }
2241 return s->max_size;
2242 }
2243
2244 static gboolean udp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
2245 {
2246 CharDriverState *chr = opaque;
2247 NetCharDriver *s = chr->opaque;
2248 gsize bytes_read = 0;
2249 GIOStatus status;
2250
2251 if (s->max_size == 0) {
2252 return TRUE;
2253 }
2254 status = g_io_channel_read_chars(s->chan, (gchar *)s->buf, sizeof(s->buf),
2255 &bytes_read, NULL);
2256 s->bufcnt = bytes_read;
2257 s->bufptr = s->bufcnt;
2258 if (status != G_IO_STATUS_NORMAL) {
2259 remove_fd_in_watch(chr);
2260 return FALSE;
2261 }
2262
2263 s->bufptr = 0;
2264 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
2265 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
2266 s->bufptr++;
2267 s->max_size = qemu_chr_be_can_write(chr);
2268 }
2269
2270 return TRUE;
2271 }
2272
2273 static void udp_chr_update_read_handler(CharDriverState *chr)
2274 {
2275 NetCharDriver *s = chr->opaque;
2276
2277 remove_fd_in_watch(chr);
2278 if (s->chan) {
2279 chr->fd_in_tag = io_add_watch_poll(s->chan, udp_chr_read_poll,
2280 udp_chr_read, chr);
2281 }
2282 }
2283
2284 static void udp_chr_close(CharDriverState *chr)
2285 {
2286 NetCharDriver *s = chr->opaque;
2287
2288 remove_fd_in_watch(chr);
2289 if (s->chan) {
2290 g_io_channel_unref(s->chan);
2291 closesocket(s->fd);
2292 }
2293 g_free(s);
2294 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2295 }
2296
2297 static CharDriverState *qemu_chr_open_udp_fd(int fd)
2298 {
2299 CharDriverState *chr = NULL;
2300 NetCharDriver *s = NULL;
2301
2302 chr = g_malloc0(sizeof(CharDriverState));
2303 s = g_malloc0(sizeof(NetCharDriver));
2304
2305 s->fd = fd;
2306 s->chan = io_channel_from_socket(s->fd);
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;
2312 chr->chr_close = udp_chr_close;
2313 /* be isn't opened until we get a connection */
2314 chr->explicit_be_open = true;
2315 return chr;
2316 }
2317
2318 static CharDriverState *qemu_chr_open_udp(QemuOpts *opts)
2319 {
2320 Error *local_err = NULL;
2321 int fd = -1;
2322
2323 fd = inet_dgram_opts(opts, &local_err);
2324 if (fd < 0) {
2325 qerror_report_err(local_err);
2326 error_free(local_err);
2327 return NULL;
2328 }
2329 return qemu_chr_open_udp_fd(fd);
2330 }
2331
2332 /***********************************************************/
2333 /* TCP Net console */
2334
2335 typedef struct {
2336
2337 GIOChannel *chan, *listen_chan;
2338 guint listen_tag;
2339 int fd, listen_fd;
2340 int connected;
2341 int max_size;
2342 int do_telnetopt;
2343 int do_nodelay;
2344 int is_unix;
2345 int *read_msgfds;
2346 int read_msgfds_num;
2347 int *write_msgfds;
2348 int write_msgfds_num;
2349 } TCPCharDriver;
2350
2351 static gboolean tcp_chr_accept(GIOChannel *chan, GIOCondition cond, void *opaque);
2352
2353 #ifndef _WIN32
2354 static int unix_send_msgfds(CharDriverState *chr, const uint8_t *buf, int len)
2355 {
2356 TCPCharDriver *s = chr->opaque;
2357 struct msghdr msgh;
2358 struct iovec iov;
2359 int r;
2360
2361 size_t fd_size = s->write_msgfds_num * sizeof(int);
2362 char control[CMSG_SPACE(fd_size)];
2363 struct cmsghdr *cmsg;
2364
2365 memset(&msgh, 0, sizeof(msgh));
2366 memset(control, 0, sizeof(control));
2367
2368 /* set the payload */
2369 iov.iov_base = (uint8_t *) buf;
2370 iov.iov_len = len;
2371
2372 msgh.msg_iov = &iov;
2373 msgh.msg_iovlen = 1;
2374
2375 msgh.msg_control = control;
2376 msgh.msg_controllen = sizeof(control);
2377
2378 cmsg = CMSG_FIRSTHDR(&msgh);
2379
2380 cmsg->cmsg_len = CMSG_LEN(fd_size);
2381 cmsg->cmsg_level = SOL_SOCKET;
2382 cmsg->cmsg_type = SCM_RIGHTS;
2383 memcpy(CMSG_DATA(cmsg), s->write_msgfds, fd_size);
2384
2385 do {
2386 r = sendmsg(s->fd, &msgh, 0);
2387 } while (r < 0 && errno == EINTR);
2388
2389 /* free the written msgfds, no matter what */
2390 if (s->write_msgfds_num) {
2391 g_free(s->write_msgfds);
2392 s->write_msgfds = 0;
2393 s->write_msgfds_num = 0;
2394 }
2395
2396 return r;
2397 }
2398 #endif
2399
2400 static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2401 {
2402 TCPCharDriver *s = chr->opaque;
2403 if (s->connected) {
2404 #ifndef _WIN32
2405 if (s->is_unix && s->write_msgfds_num) {
2406 return unix_send_msgfds(chr, buf, len);
2407 } else
2408 #endif
2409 {
2410 return io_channel_send(s->chan, buf, len);
2411 }
2412 } else {
2413 /* XXX: indicate an error ? */
2414 return len;
2415 }
2416 }
2417
2418 static int tcp_chr_read_poll(void *opaque)
2419 {
2420 CharDriverState *chr = opaque;
2421 TCPCharDriver *s = chr->opaque;
2422 if (!s->connected)
2423 return 0;
2424 s->max_size = qemu_chr_be_can_write(chr);
2425 return s->max_size;
2426 }
2427
2428 #define IAC 255
2429 #define IAC_BREAK 243
2430 static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
2431 TCPCharDriver *s,
2432 uint8_t *buf, int *size)
2433 {
2434 /* Handle any telnet client's basic IAC options to satisfy char by
2435 * char mode with no echo. All IAC options will be removed from
2436 * the buf and the do_telnetopt variable will be used to track the
2437 * state of the width of the IAC information.
2438 *
2439 * IAC commands come in sets of 3 bytes with the exception of the
2440 * "IAC BREAK" command and the double IAC.
2441 */
2442
2443 int i;
2444 int j = 0;
2445
2446 for (i = 0; i < *size; i++) {
2447 if (s->do_telnetopt > 1) {
2448 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2449 /* Double IAC means send an IAC */
2450 if (j != i)
2451 buf[j] = buf[i];
2452 j++;
2453 s->do_telnetopt = 1;
2454 } else {
2455 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2456 /* Handle IAC break commands by sending a serial break */
2457 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
2458 s->do_telnetopt++;
2459 }
2460 s->do_telnetopt++;
2461 }
2462 if (s->do_telnetopt >= 4) {
2463 s->do_telnetopt = 1;
2464 }
2465 } else {
2466 if ((unsigned char)buf[i] == IAC) {
2467 s->do_telnetopt = 2;
2468 } else {
2469 if (j != i)
2470 buf[j] = buf[i];
2471 j++;
2472 }
2473 }
2474 }
2475 *size = j;
2476 }
2477
2478 static int tcp_get_msgfds(CharDriverState *chr, int *fds, int num)
2479 {
2480 TCPCharDriver *s = chr->opaque;
2481 int to_copy = (s->read_msgfds_num < num) ? s->read_msgfds_num : num;
2482
2483 if (to_copy) {
2484 int i;
2485
2486 memcpy(fds, s->read_msgfds, to_copy * sizeof(int));
2487
2488 /* Close unused fds */
2489 for (i = to_copy; i < s->read_msgfds_num; i++) {
2490 close(s->read_msgfds[i]);
2491 }
2492
2493 g_free(s->read_msgfds);
2494 s->read_msgfds = 0;
2495 s->read_msgfds_num = 0;
2496 }
2497
2498 return to_copy;
2499 }
2500
2501 static int tcp_set_msgfds(CharDriverState *chr, int *fds, int num)
2502 {
2503 TCPCharDriver *s = chr->opaque;
2504
2505 /* clear old pending fd array */
2506 if (s->write_msgfds) {
2507 g_free(s->write_msgfds);
2508 }
2509
2510 if (num) {
2511 s->write_msgfds = g_malloc(num * sizeof(int));
2512 memcpy(s->write_msgfds, fds, num * sizeof(int));
2513 }
2514
2515 s->write_msgfds_num = num;
2516
2517 return 0;
2518 }
2519
2520 #ifndef _WIN32
2521 static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
2522 {
2523 TCPCharDriver *s = chr->opaque;
2524 struct cmsghdr *cmsg;
2525
2526 for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
2527 int fd_size, i;
2528
2529 if (cmsg->cmsg_len < CMSG_LEN(sizeof(int)) ||
2530 cmsg->cmsg_level != SOL_SOCKET ||
2531 cmsg->cmsg_type != SCM_RIGHTS) {
2532 continue;
2533 }
2534
2535 fd_size = cmsg->cmsg_len - CMSG_LEN(0);
2536
2537 if (!fd_size) {
2538 continue;
2539 }
2540
2541 /* close and clean read_msgfds */
2542 for (i = 0; i < s->read_msgfds_num; i++) {
2543 close(s->read_msgfds[i]);
2544 }
2545
2546 if (s->read_msgfds_num) {
2547 g_free(s->read_msgfds);
2548 }
2549
2550 s->read_msgfds_num = fd_size / sizeof(int);
2551 s->read_msgfds = g_malloc(fd_size);
2552 memcpy(s->read_msgfds, CMSG_DATA(cmsg), fd_size);
2553
2554 for (i = 0; i < s->read_msgfds_num; i++) {
2555 int fd = s->read_msgfds[i];
2556 if (fd < 0) {
2557 continue;
2558 }
2559
2560 /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
2561 qemu_set_block(fd);
2562
2563 #ifndef MSG_CMSG_CLOEXEC
2564 qemu_set_cloexec(fd);
2565 #endif
2566 }
2567 }
2568 }
2569
2570 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2571 {
2572 TCPCharDriver *s = chr->opaque;
2573 struct msghdr msg = { NULL, };
2574 struct iovec iov[1];
2575 union {
2576 struct cmsghdr cmsg;
2577 char control[CMSG_SPACE(sizeof(int))];
2578 } msg_control;
2579 int flags = 0;
2580 ssize_t ret;
2581
2582 iov[0].iov_base = buf;
2583 iov[0].iov_len = len;
2584
2585 msg.msg_iov = iov;
2586 msg.msg_iovlen = 1;
2587 msg.msg_control = &msg_control;
2588 msg.msg_controllen = sizeof(msg_control);
2589
2590 #ifdef MSG_CMSG_CLOEXEC
2591 flags |= MSG_CMSG_CLOEXEC;
2592 #endif
2593 ret = recvmsg(s->fd, &msg, flags);
2594 if (ret > 0 && s->is_unix) {
2595 unix_process_msgfd(chr, &msg);
2596 }
2597
2598 return ret;
2599 }
2600 #else
2601 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2602 {
2603 TCPCharDriver *s = chr->opaque;
2604 return qemu_recv(s->fd, buf, len, 0);
2605 }
2606 #endif
2607
2608 static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
2609 {
2610 TCPCharDriver *s = chr->opaque;
2611 return g_io_create_watch(s->chan, cond);
2612 }
2613
2614 static void tcp_chr_disconnect(CharDriverState *chr)
2615 {
2616 TCPCharDriver *s = chr->opaque;
2617
2618 s->connected = 0;
2619 if (s->listen_chan) {
2620 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN,
2621 tcp_chr_accept, chr);
2622 }
2623 remove_fd_in_watch(chr);
2624 g_io_channel_unref(s->chan);
2625 s->chan = NULL;
2626 closesocket(s->fd);
2627 s->fd = -1;
2628 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2629 }
2630
2631 static gboolean tcp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
2632 {
2633 CharDriverState *chr = opaque;
2634 TCPCharDriver *s = chr->opaque;
2635 uint8_t buf[READ_BUF_LEN];
2636 int len, size;
2637
2638 if (!s->connected || s->max_size <= 0) {
2639 return TRUE;
2640 }
2641 len = sizeof(buf);
2642 if (len > s->max_size)
2643 len = s->max_size;
2644 size = tcp_chr_recv(chr, (void *)buf, len);
2645 if (size == 0) {
2646 /* connection closed */
2647 tcp_chr_disconnect(chr);
2648 } else if (size > 0) {
2649 if (s->do_telnetopt)
2650 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2651 if (size > 0)
2652 qemu_chr_be_write(chr, buf, size);
2653 }
2654
2655 return TRUE;
2656 }
2657
2658 static int tcp_chr_sync_read(CharDriverState *chr, const uint8_t *buf, int len)
2659 {
2660 TCPCharDriver *s = chr->opaque;
2661 int size;
2662
2663 if (!s->connected) {
2664 return 0;
2665 }
2666
2667 size = tcp_chr_recv(chr, (void *) buf, len);
2668 if (size == 0) {
2669 /* connection closed */
2670 tcp_chr_disconnect(chr);
2671 }
2672
2673 return size;
2674 }
2675
2676 #ifndef _WIN32
2677 CharDriverState *qemu_chr_open_eventfd(int eventfd)
2678 {
2679 CharDriverState *chr = qemu_chr_open_fd(eventfd, eventfd);
2680
2681 if (chr) {
2682 chr->avail_connections = 1;
2683 }
2684
2685 return chr;
2686 }
2687 #endif
2688
2689 static gboolean tcp_chr_chan_close(GIOChannel *channel, GIOCondition cond,
2690 void *opaque)
2691 {
2692 CharDriverState *chr = opaque;
2693
2694 if (cond != G_IO_HUP) {
2695 return FALSE;
2696 }
2697
2698 /* connection closed */
2699 tcp_chr_disconnect(chr);
2700 if (chr->fd_hup_tag) {
2701 g_source_remove(chr->fd_hup_tag);
2702 chr->fd_hup_tag = 0;
2703 }
2704
2705 return TRUE;
2706 }
2707
2708 static void tcp_chr_connect(void *opaque)
2709 {
2710 CharDriverState *chr = opaque;
2711 TCPCharDriver *s = chr->opaque;
2712
2713 s->connected = 1;
2714 if (s->chan) {
2715 chr->fd_in_tag = io_add_watch_poll(s->chan, tcp_chr_read_poll,
2716 tcp_chr_read, chr);
2717 chr->fd_hup_tag = g_io_add_watch(s->chan, G_IO_HUP, tcp_chr_chan_close,
2718 chr);
2719 }
2720 qemu_chr_be_generic_open(chr);
2721 }
2722
2723 static void tcp_chr_update_read_handler(CharDriverState *chr)
2724 {
2725 TCPCharDriver *s = chr->opaque;
2726
2727 remove_fd_in_watch(chr);
2728 if (s->chan) {
2729 chr->fd_in_tag = io_add_watch_poll(s->chan, tcp_chr_read_poll,
2730 tcp_chr_read, chr);
2731 }
2732 }
2733
2734 #define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
2735 static void tcp_chr_telnet_init(int fd)
2736 {
2737 char buf[3];
2738 /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
2739 IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2740 send(fd, (char *)buf, 3, 0);
2741 IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2742 send(fd, (char *)buf, 3, 0);
2743 IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2744 send(fd, (char *)buf, 3, 0);
2745 IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2746 send(fd, (char *)buf, 3, 0);
2747 }
2748
2749 static int tcp_chr_add_client(CharDriverState *chr, int fd)
2750 {
2751 TCPCharDriver *s = chr->opaque;
2752 if (s->fd != -1)
2753 return -1;
2754
2755 qemu_set_nonblock(fd);
2756 if (s->do_nodelay)
2757 socket_set_nodelay(fd);
2758 s->fd = fd;
2759 s->chan = io_channel_from_socket(fd);
2760 if (s->listen_tag) {
2761 g_source_remove(s->listen_tag);
2762 s->listen_tag = 0;
2763 }
2764 tcp_chr_connect(chr);
2765
2766 return 0;
2767 }
2768
2769 static gboolean tcp_chr_accept(GIOChannel *channel, GIOCondition cond, void *opaque)
2770 {
2771 CharDriverState *chr = opaque;
2772 TCPCharDriver *s = chr->opaque;
2773 struct sockaddr_in saddr;
2774 #ifndef _WIN32
2775 struct sockaddr_un uaddr;
2776 #endif
2777 struct sockaddr *addr;
2778 socklen_t len;
2779 int fd;
2780
2781 for(;;) {
2782 #ifndef _WIN32
2783 if (s->is_unix) {
2784 len = sizeof(uaddr);
2785 addr = (struct sockaddr *)&uaddr;
2786 } else
2787 #endif
2788 {
2789 len = sizeof(saddr);
2790 addr = (struct sockaddr *)&saddr;
2791 }
2792 fd = qemu_accept(s->listen_fd, addr, &len);
2793 if (fd < 0 && errno != EINTR) {
2794 s->listen_tag = 0;
2795 return FALSE;
2796 } else if (fd >= 0) {
2797 if (s->do_telnetopt)
2798 tcp_chr_telnet_init(fd);
2799 break;
2800 }
2801 }
2802 if (tcp_chr_add_client(chr, fd) < 0)
2803 close(fd);
2804
2805 return TRUE;
2806 }
2807
2808 static void tcp_chr_close(CharDriverState *chr)
2809 {
2810 TCPCharDriver *s = chr->opaque;
2811 int i;
2812 if (s->fd >= 0) {
2813 remove_fd_in_watch(chr);
2814 if (s->chan) {
2815 g_io_channel_unref(s->chan);
2816 }
2817 closesocket(s->fd);
2818 }
2819 if (s->listen_fd >= 0) {
2820 if (s->listen_tag) {
2821 g_source_remove(s->listen_tag);
2822 s->listen_tag = 0;
2823 }
2824 if (s->listen_chan) {
2825 g_io_channel_unref(s->listen_chan);
2826 }
2827 closesocket(s->listen_fd);
2828 }
2829 if (s->read_msgfds_num) {
2830 for (i = 0; i < s->read_msgfds_num; i++) {
2831 close(s->read_msgfds[i]);
2832 }
2833 g_free(s->read_msgfds);
2834 }
2835 if (s->write_msgfds_num) {
2836 g_free(s->write_msgfds);
2837 }
2838 g_free(s);
2839 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2840 }
2841
2842 static CharDriverState *qemu_chr_open_socket_fd(int fd, bool do_nodelay,
2843 bool is_listen, bool is_telnet,
2844 bool is_waitconnect,
2845 Error **errp)
2846 {
2847 CharDriverState *chr = NULL;
2848 TCPCharDriver *s = NULL;
2849 char host[NI_MAXHOST], serv[NI_MAXSERV];
2850 const char *left = "", *right = "";
2851 struct sockaddr_storage ss;
2852 socklen_t ss_len = sizeof(ss);
2853
2854 memset(&ss, 0, ss_len);
2855 if (getsockname(fd, (struct sockaddr *) &ss, &ss_len) != 0) {
2856 error_setg_errno(errp, errno, "getsockname");
2857 return NULL;
2858 }
2859
2860 chr = g_malloc0(sizeof(CharDriverState));
2861 s = g_malloc0(sizeof(TCPCharDriver));
2862
2863 s->connected = 0;
2864 s->fd = -1;
2865 s->listen_fd = -1;
2866 s->read_msgfds = 0;
2867 s->read_msgfds_num = 0;
2868 s->write_msgfds = 0;
2869 s->write_msgfds_num = 0;
2870
2871 chr->filename = g_malloc(256);
2872 switch (ss.ss_family) {
2873 #ifndef _WIN32
2874 case AF_UNIX:
2875 s->is_unix = 1;
2876 snprintf(chr->filename, 256, "unix:%s%s",
2877 ((struct sockaddr_un *)(&ss))->sun_path,
2878 is_listen ? ",server" : "");
2879 break;
2880 #endif
2881 case AF_INET6:
2882 left = "[";
2883 right = "]";
2884 /* fall through */
2885 case AF_INET:
2886 s->do_nodelay = do_nodelay;
2887 getnameinfo((struct sockaddr *) &ss, ss_len, host, sizeof(host),
2888 serv, sizeof(serv), NI_NUMERICHOST | NI_NUMERICSERV);
2889 snprintf(chr->filename, 256, "%s:%s%s%s:%s%s",
2890 is_telnet ? "telnet" : "tcp",
2891 left, host, right, serv,
2892 is_listen ? ",server" : "");
2893 break;
2894 }
2895
2896 chr->opaque = s;
2897 chr->chr_write = tcp_chr_write;
2898 chr->chr_sync_read = tcp_chr_sync_read;
2899 chr->chr_close = tcp_chr_close;
2900 chr->get_msgfds = tcp_get_msgfds;
2901 chr->set_msgfds = tcp_set_msgfds;
2902 chr->chr_add_client = tcp_chr_add_client;
2903 chr->chr_add_watch = tcp_chr_add_watch;
2904 chr->chr_update_read_handler = tcp_chr_update_read_handler;
2905 /* be isn't opened until we get a connection */
2906 chr->explicit_be_open = true;
2907
2908 if (is_listen) {
2909 s->listen_fd = fd;
2910 s->listen_chan = io_channel_from_socket(s->listen_fd);
2911 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr);
2912 if (is_telnet) {
2913 s->do_telnetopt = 1;
2914 }
2915 } else {
2916 s->connected = 1;
2917 s->fd = fd;
2918 socket_set_nodelay(fd);
2919 s->chan = io_channel_from_socket(s->fd);
2920 tcp_chr_connect(chr);
2921 }
2922
2923 if (is_listen && is_waitconnect) {
2924 fprintf(stderr, "QEMU waiting for connection on: %s\n",
2925 chr->filename);
2926 tcp_chr_accept(s->listen_chan, G_IO_IN, chr);
2927 qemu_set_nonblock(s->listen_fd);
2928 }
2929 return chr;
2930 }
2931
2932 static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
2933 {
2934 CharDriverState *chr = NULL;
2935 Error *local_err = NULL;
2936 int fd = -1;
2937
2938 bool is_listen = qemu_opt_get_bool(opts, "server", false);
2939 bool is_waitconnect = is_listen && qemu_opt_get_bool(opts, "wait", true);
2940 bool is_telnet = qemu_opt_get_bool(opts, "telnet", false);
2941 bool do_nodelay = !qemu_opt_get_bool(opts, "delay", true);
2942 bool is_unix = qemu_opt_get(opts, "path") != NULL;
2943
2944 if (is_unix) {
2945 if (is_listen) {
2946 fd = unix_listen_opts(opts, &local_err);
2947 } else {
2948 fd = unix_connect_opts(opts, &local_err, NULL, NULL);
2949 }
2950 } else {
2951 if (is_listen) {
2952 fd = inet_listen_opts(opts, 0, &local_err);
2953 } else {
2954 fd = inet_connect_opts(opts, &local_err, NULL, NULL);
2955 }
2956 }
2957 if (fd < 0) {
2958 goto fail;
2959 }
2960
2961 if (!is_waitconnect)
2962 qemu_set_nonblock(fd);
2963
2964 chr = qemu_chr_open_socket_fd(fd, do_nodelay, is_listen, is_telnet,
2965 is_waitconnect, &local_err);
2966 if (local_err) {
2967 goto fail;
2968 }
2969 return chr;
2970
2971
2972 fail:
2973 if (local_err) {
2974 qerror_report_err(local_err);
2975 error_free(local_err);
2976 }
2977 if (fd >= 0) {
2978 closesocket(fd);
2979 }
2980 if (chr) {
2981 g_free(chr->opaque);
2982 g_free(chr);
2983 }
2984 return NULL;
2985 }
2986
2987 /*********************************************************/
2988 /* Ring buffer chardev */
2989
2990 typedef struct {
2991 size_t size;
2992 size_t prod;
2993 size_t cons;
2994 uint8_t *cbuf;
2995 } RingBufCharDriver;
2996
2997 static size_t ringbuf_count(const CharDriverState *chr)
2998 {
2999 const RingBufCharDriver *d = chr->opaque;
3000
3001 return d->prod - d->cons;
3002 }
3003
3004 static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
3005 {
3006 RingBufCharDriver *d = chr->opaque;
3007 int i;
3008
3009 if (!buf || (len < 0)) {
3010 return -1;
3011 }
3012
3013 for (i = 0; i < len; i++ ) {
3014 d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
3015 if (d->prod - d->cons > d->size) {
3016 d->cons = d->prod - d->size;
3017 }
3018 }
3019
3020 return 0;
3021 }
3022
3023 static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len)
3024 {
3025 RingBufCharDriver *d = chr->opaque;
3026 int i;
3027
3028 for (i = 0; i < len && d->cons != d->prod; i++) {
3029 buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
3030 }
3031
3032 return i;
3033 }
3034
3035 static void ringbuf_chr_close(struct CharDriverState *chr)
3036 {
3037 RingBufCharDriver *d = chr->opaque;
3038
3039 g_free(d->cbuf);
3040 g_free(d);
3041 chr->opaque = NULL;
3042 }
3043
3044 static CharDriverState *qemu_chr_open_ringbuf(ChardevRingbuf *opts,
3045 Error **errp)
3046 {
3047 CharDriverState *chr;
3048 RingBufCharDriver *d;
3049
3050 chr = g_malloc0(sizeof(CharDriverState));
3051 d = g_malloc(sizeof(*d));
3052
3053 d->size = opts->has_size ? opts->size : 65536;
3054
3055 /* The size must be power of 2 */
3056 if (d->size & (d->size - 1)) {
3057 error_setg(errp, "size of ringbuf chardev must be power of two");
3058 goto fail;
3059 }
3060
3061 d->prod = 0;
3062 d->cons = 0;
3063 d->cbuf = g_malloc0(d->size);
3064
3065 chr->opaque = d;
3066 chr->chr_write = ringbuf_chr_write;
3067 chr->chr_close = ringbuf_chr_close;
3068
3069 return chr;
3070
3071 fail:
3072 g_free(d);
3073 g_free(chr);
3074 return NULL;
3075 }
3076
3077 bool chr_is_ringbuf(const CharDriverState *chr)
3078 {
3079 return chr->chr_write == ringbuf_chr_write;
3080 }
3081
3082 void qmp_ringbuf_write(const char *device, const char *data,
3083 bool has_format, enum DataFormat format,
3084 Error **errp)
3085 {
3086 CharDriverState *chr;
3087 const uint8_t *write_data;
3088 int ret;
3089 gsize write_count;
3090
3091 chr = qemu_chr_find(device);
3092 if (!chr) {
3093 error_setg(errp, "Device '%s' not found", device);
3094 return;
3095 }
3096
3097 if (!chr_is_ringbuf(chr)) {
3098 error_setg(errp,"%s is not a ringbuf device", device);
3099 return;
3100 }
3101
3102 if (has_format && (format == DATA_FORMAT_BASE64)) {
3103 write_data = g_base64_decode(data, &write_count);
3104 } else {
3105 write_data = (uint8_t *)data;
3106 write_count = strlen(data);
3107 }
3108
3109 ret = ringbuf_chr_write(chr, write_data, write_count);
3110
3111 if (write_data != (uint8_t *)data) {
3112 g_free((void *)write_data);
3113 }
3114
3115 if (ret < 0) {
3116 error_setg(errp, "Failed to write to device %s", device);
3117 return;
3118 }
3119 }
3120
3121 char *qmp_ringbuf_read(const char *device, int64_t size,
3122 bool has_format, enum DataFormat format,
3123 Error **errp)
3124 {
3125 CharDriverState *chr;
3126 uint8_t *read_data;
3127 size_t count;
3128 char *data;
3129
3130 chr = qemu_chr_find(device);
3131 if (!chr) {
3132 error_setg(errp, "Device '%s' not found", device);
3133 return NULL;
3134 }
3135
3136 if (!chr_is_ringbuf(chr)) {
3137 error_setg(errp,"%s is not a ringbuf device", device);
3138 return NULL;
3139 }
3140
3141 if (size <= 0) {
3142 error_setg(errp, "size must be greater than zero");
3143 return NULL;
3144 }
3145
3146 count = ringbuf_count(chr);
3147 size = size > count ? count : size;
3148 read_data = g_malloc(size + 1);
3149
3150 ringbuf_chr_read(chr, read_data, size);
3151
3152 if (has_format && (format == DATA_FORMAT_BASE64)) {
3153 data = g_base64_encode(read_data, size);
3154 g_free(read_data);
3155 } else {
3156 /*
3157 * FIXME should read only complete, valid UTF-8 characters up
3158 * to @size bytes. Invalid sequences should be replaced by a
3159 * suitable replacement character. Except when (and only
3160 * when) ring buffer lost characters since last read, initial
3161 * continuation characters should be dropped.
3162 */
3163 read_data[size] = 0;
3164 data = (char *)read_data;
3165 }
3166
3167 return data;
3168 }
3169
3170 QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
3171 {
3172 char host[65], port[33], width[8], height[8];
3173 int pos;
3174 const char *p;
3175 QemuOpts *opts;
3176 Error *local_err = NULL;
3177
3178 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
3179 if (local_err) {
3180 qerror_report_err(local_err);
3181 error_free(local_err);
3182 return NULL;
3183 }
3184
3185 if (strstart(filename, "mon:", &p)) {
3186 filename = p;
3187 qemu_opt_set(opts, "mux", "on");
3188 if (strcmp(filename, "stdio") == 0) {
3189 /* Monitor is muxed to stdio: do not exit on Ctrl+C by default
3190 * but pass it to the guest. Handle this only for compat syntax,
3191 * for -chardev syntax we have special option for this.
3192 * This is what -nographic did, redirecting+muxing serial+monitor
3193 * to stdio causing Ctrl+C to be passed to guest. */
3194 qemu_opt_set(opts, "signal", "off");
3195 }
3196 }
3197
3198 if (strcmp(filename, "null") == 0 ||
3199 strcmp(filename, "pty") == 0 ||
3200 strcmp(filename, "msmouse") == 0 ||
3201 strcmp(filename, "braille") == 0 ||
3202 strcmp(filename, "stdio") == 0) {
3203 qemu_opt_set(opts, "backend", filename);
3204 return opts;
3205 }
3206 if (strstart(filename, "vc", &p)) {
3207 qemu_opt_set(opts, "backend", "vc");
3208 if (*p == ':') {
3209 if (sscanf(p+1, "%7[0-9]x%7[0-9]", width, height) == 2) {
3210 /* pixels */
3211 qemu_opt_set(opts, "width", width);
3212 qemu_opt_set(opts, "height", height);
3213 } else if (sscanf(p+1, "%7[0-9]Cx%7[0-9]C", width, height) == 2) {
3214 /* chars */
3215 qemu_opt_set(opts, "cols", width);
3216 qemu_opt_set(opts, "rows", height);
3217 } else {
3218 goto fail;
3219 }
3220 }
3221 return opts;
3222 }
3223 if (strcmp(filename, "con:") == 0) {
3224 qemu_opt_set(opts, "backend", "console");
3225 return opts;
3226 }
3227 if (strstart(filename, "COM", NULL)) {
3228 qemu_opt_set(opts, "backend", "serial");
3229 qemu_opt_set(opts, "path", filename);
3230 return opts;
3231 }
3232 if (strstart(filename, "file:", &p)) {
3233 qemu_opt_set(opts, "backend", "file");
3234 qemu_opt_set(opts, "path", p);
3235 return opts;
3236 }
3237 if (strstart(filename, "pipe:", &p)) {
3238 qemu_opt_set(opts, "backend", "pipe");
3239 qemu_opt_set(opts, "path", p);
3240 return opts;
3241 }
3242 if (strstart(filename, "tcp:", &p) ||
3243 strstart(filename, "telnet:", &p)) {
3244 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3245 host[0] = 0;
3246 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
3247 goto fail;
3248 }
3249 qemu_opt_set(opts, "backend", "socket");
3250 qemu_opt_set(opts, "host", host);
3251 qemu_opt_set(opts, "port", port);
3252 if (p[pos] == ',') {
3253 if (qemu_opts_do_parse(opts, p+pos+1, NULL) != 0)
3254 goto fail;
3255 }
3256 if (strstart(filename, "telnet:", &p))
3257 qemu_opt_set(opts, "telnet", "on");
3258 return opts;
3259 }
3260 if (strstart(filename, "udp:", &p)) {
3261 qemu_opt_set(opts, "backend", "udp");
3262 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
3263 host[0] = 0;
3264 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
3265 goto fail;
3266 }
3267 }
3268 qemu_opt_set(opts, "host", host);
3269 qemu_opt_set(opts, "port", port);
3270 if (p[pos] == '@') {
3271 p += pos + 1;
3272 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3273 host[0] = 0;
3274 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
3275 goto fail;
3276 }
3277 }
3278 qemu_opt_set(opts, "localaddr", host);
3279 qemu_opt_set(opts, "localport", port);
3280 }
3281 return opts;
3282 }
3283 if (strstart(filename, "unix:", &p)) {
3284 qemu_opt_set(opts, "backend", "socket");
3285 if (qemu_opts_do_parse(opts, p, "path") != 0)
3286 goto fail;
3287 return opts;
3288 }
3289 if (strstart(filename, "/dev/parport", NULL) ||
3290 strstart(filename, "/dev/ppi", NULL)) {
3291 qemu_opt_set(opts, "backend", "parport");
3292 qemu_opt_set(opts, "path", filename);
3293 return opts;
3294 }
3295 if (strstart(filename, "/dev/", NULL)) {
3296 qemu_opt_set(opts, "backend", "tty");
3297 qemu_opt_set(opts, "path", filename);
3298 return opts;
3299 }
3300
3301 fail:
3302 qemu_opts_del(opts);
3303 return NULL;
3304 }
3305
3306 static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
3307 Error **errp)
3308 {
3309 const char *path = qemu_opt_get(opts, "path");
3310
3311 if (path == NULL) {
3312 error_setg(errp, "chardev: file: no filename given");
3313 return;
3314 }
3315 backend->file = g_new0(ChardevFile, 1);
3316 backend->file->out = g_strdup(path);
3317 }
3318
3319 static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
3320 Error **errp)
3321 {
3322 backend->stdio = g_new0(ChardevStdio, 1);
3323 backend->stdio->has_signal = true;
3324 backend->stdio->signal = qemu_opt_get_bool(opts, "signal", true);
3325 }
3326
3327 static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
3328 Error **errp)
3329 {
3330 const char *device = qemu_opt_get(opts, "path");
3331
3332 if (device == NULL) {
3333 error_setg(errp, "chardev: serial/tty: no device path given");
3334 return;
3335 }
3336 backend->serial = g_new0(ChardevHostdev, 1);
3337 backend->serial->device = g_strdup(device);
3338 }
3339
3340 static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
3341 Error **errp)
3342 {
3343 const char *device = qemu_opt_get(opts, "path");
3344
3345 if (device == NULL) {
3346 error_setg(errp, "chardev: parallel: no device path given");
3347 return;
3348 }
3349 backend->parallel = g_new0(ChardevHostdev, 1);
3350 backend->parallel->device = g_strdup(device);
3351 }
3352
3353 static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
3354 Error **errp)
3355 {
3356 const char *device = qemu_opt_get(opts, "path");
3357
3358 if (device == NULL) {
3359 error_setg(errp, "chardev: pipe: no device path given");
3360 return;
3361 }
3362 backend->pipe = g_new0(ChardevHostdev, 1);
3363 backend->pipe->device = g_strdup(device);
3364 }
3365
3366 static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
3367 Error **errp)
3368 {
3369 int val;
3370
3371 backend->ringbuf = g_new0(ChardevRingbuf, 1);
3372
3373 val = qemu_opt_get_size(opts, "size", 0);
3374 if (val != 0) {
3375 backend->ringbuf->has_size = true;
3376 backend->ringbuf->size = val;
3377 }
3378 }
3379
3380 static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend,
3381 Error **errp)
3382 {
3383 const char *chardev = qemu_opt_get(opts, "chardev");
3384
3385 if (chardev == NULL) {
3386 error_setg(errp, "chardev: mux: no chardev given");
3387 return;
3388 }
3389 backend->mux = g_new0(ChardevMux, 1);
3390 backend->mux->chardev = g_strdup(chardev);
3391 }
3392
3393 typedef struct CharDriver {
3394 const char *name;
3395 /* old, pre qapi */
3396 CharDriverState *(*open)(QemuOpts *opts);
3397 /* new, qapi-based */
3398 ChardevBackendKind kind;
3399 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
3400 } CharDriver;
3401
3402 static GSList *backends;
3403
3404 void register_char_driver(const char *name, CharDriverState *(*open)(QemuOpts *))
3405 {
3406 CharDriver *s;
3407
3408 s = g_malloc0(sizeof(*s));
3409 s->name = g_strdup(name);
3410 s->open = open;
3411
3412 backends = g_slist_append(backends, s);
3413 }
3414
3415 void register_char_driver_qapi(const char *name, ChardevBackendKind kind,
3416 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp))
3417 {
3418 CharDriver *s;
3419
3420 s = g_malloc0(sizeof(*s));
3421 s->name = g_strdup(name);
3422 s->kind = kind;
3423 s->parse = parse;
3424
3425 backends = g_slist_append(backends, s);
3426 }
3427
3428 CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
3429 void (*init)(struct CharDriverState *s),
3430 Error **errp)
3431 {
3432 Error *local_err = NULL;
3433 CharDriver *cd;
3434 CharDriverState *chr;
3435 GSList *i;
3436
3437 if (qemu_opts_id(opts) == NULL) {
3438 error_setg(errp, "chardev: no id specified");
3439 goto err;
3440 }
3441
3442 if (qemu_opt_get(opts, "backend") == NULL) {
3443 error_setg(errp, "chardev: \"%s\" missing backend",
3444 qemu_opts_id(opts));
3445 goto err;
3446 }
3447 for (i = backends; i; i = i->next) {
3448 cd = i->data;
3449
3450 if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) {
3451 break;
3452 }
3453 }
3454 if (i == NULL) {
3455 error_setg(errp, "chardev: backend \"%s\" not found",
3456 qemu_opt_get(opts, "backend"));
3457 goto err;
3458 }
3459
3460 if (!cd->open) {
3461 /* using new, qapi init */
3462 ChardevBackend *backend = g_new0(ChardevBackend, 1);
3463 ChardevReturn *ret = NULL;
3464 const char *id = qemu_opts_id(opts);
3465 char *bid = NULL;
3466
3467 if (qemu_opt_get_bool(opts, "mux", 0)) {
3468 bid = g_strdup_printf("%s-base", id);
3469 }
3470
3471 chr = NULL;
3472 backend->kind = cd->kind;
3473 if (cd->parse) {
3474 cd->parse(opts, backend, &local_err);
3475 if (local_err) {
3476 error_propagate(errp, local_err);
3477 goto qapi_out;
3478 }
3479 }
3480 ret = qmp_chardev_add(bid ? bid : id, backend, errp);
3481 if (!ret) {
3482 goto qapi_out;
3483 }
3484
3485 if (bid) {
3486 qapi_free_ChardevBackend(backend);
3487 qapi_free_ChardevReturn(ret);
3488 backend = g_new0(ChardevBackend, 1);
3489 backend->mux = g_new0(ChardevMux, 1);
3490 backend->kind = CHARDEV_BACKEND_KIND_MUX;
3491 backend->mux->chardev = g_strdup(bid);
3492 ret = qmp_chardev_add(id, backend, errp);
3493 if (!ret) {
3494 chr = qemu_chr_find(bid);
3495 qemu_chr_delete(chr);
3496 chr = NULL;
3497 goto qapi_out;
3498 }
3499 }
3500
3501 chr = qemu_chr_find(id);
3502 chr->opts = opts;
3503
3504 qapi_out:
3505 qapi_free_ChardevBackend(backend);
3506 qapi_free_ChardevReturn(ret);
3507 g_free(bid);
3508 return chr;
3509 }
3510
3511 chr = cd->open(opts);
3512 if (!chr) {
3513 error_setg(errp, "chardev: opening backend \"%s\" failed",
3514 qemu_opt_get(opts, "backend"));
3515 goto err;
3516 }
3517
3518 if (!chr->filename)
3519 chr->filename = g_strdup(qemu_opt_get(opts, "backend"));
3520 chr->init = init;
3521 /* if we didn't create the chardev via qmp_chardev_add, we
3522 * need to send the OPENED event here
3523 */
3524 if (!chr->explicit_be_open) {
3525 qemu_chr_be_event(chr, CHR_EVENT_OPENED);
3526 }
3527 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3528
3529 if (qemu_opt_get_bool(opts, "mux", 0)) {
3530 CharDriverState *base = chr;
3531 int len = strlen(qemu_opts_id(opts)) + 6;
3532 base->label = g_malloc(len);
3533 snprintf(base->label, len, "%s-base", qemu_opts_id(opts));
3534 chr = qemu_chr_open_mux(base);
3535 chr->filename = base->filename;
3536 chr->avail_connections = MAX_MUX;
3537 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3538 } else {
3539 chr->avail_connections = 1;
3540 }
3541 chr->label = g_strdup(qemu_opts_id(opts));
3542 chr->opts = opts;
3543 return chr;
3544
3545 err:
3546 qemu_opts_del(opts);
3547 return NULL;
3548 }
3549
3550 CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
3551 {
3552 const char *p;
3553 CharDriverState *chr;
3554 QemuOpts *opts;
3555 Error *err = NULL;
3556
3557 if (strstart(filename, "chardev:", &p)) {
3558 return qemu_chr_find(p);
3559 }
3560
3561 opts = qemu_chr_parse_compat(label, filename);
3562 if (!opts)
3563 return NULL;
3564
3565 chr = qemu_chr_new_from_opts(opts, init, &err);
3566 if (err) {
3567 error_report("%s", error_get_pretty(err));
3568 error_free(err);
3569 }
3570 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
3571 qemu_chr_fe_claim_no_fail(chr);
3572 monitor_init(chr, MONITOR_USE_READLINE);
3573 }
3574 return chr;
3575 }
3576
3577 void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo)
3578 {
3579 if (chr->chr_set_echo) {
3580 chr->chr_set_echo(chr, echo);
3581 }
3582 }
3583
3584 void qemu_chr_fe_set_open(struct CharDriverState *chr, int fe_open)
3585 {
3586 if (chr->fe_open == fe_open) {
3587 return;
3588 }
3589 chr->fe_open = fe_open;
3590 if (chr->chr_set_fe_open) {
3591 chr->chr_set_fe_open(chr, fe_open);
3592 }
3593 }
3594
3595 void qemu_chr_fe_event(struct CharDriverState *chr, int event)
3596 {
3597 if (chr->chr_fe_event) {
3598 chr->chr_fe_event(chr, event);
3599 }
3600 }
3601
3602 int qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond,
3603 GIOFunc func, void *user_data)
3604 {
3605 GSource *src;
3606 guint tag;
3607
3608 if (s->chr_add_watch == NULL) {
3609 return -ENOSYS;
3610 }
3611
3612 src = s->chr_add_watch(s, cond);
3613 g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
3614 tag = g_source_attach(src, NULL);
3615 g_source_unref(src);
3616
3617 return tag;
3618 }
3619
3620 int qemu_chr_fe_claim(CharDriverState *s)
3621 {
3622 if (s->avail_connections < 1) {
3623 return -1;
3624 }
3625 s->avail_connections--;
3626 return 0;
3627 }
3628
3629 void qemu_chr_fe_claim_no_fail(CharDriverState *s)
3630 {
3631 if (qemu_chr_fe_claim(s) != 0) {
3632 fprintf(stderr, "%s: error chardev \"%s\" already used\n",
3633 __func__, s->label);
3634 exit(1);
3635 }
3636 }
3637
3638 void qemu_chr_fe_release(CharDriverState *s)
3639 {
3640 s->avail_connections++;
3641 }
3642
3643 void qemu_chr_delete(CharDriverState *chr)
3644 {
3645 QTAILQ_REMOVE(&chardevs, chr, next);
3646 if (chr->chr_close) {
3647 chr->chr_close(chr);
3648 }
3649 g_free(chr->filename);
3650 g_free(chr->label);
3651 if (chr->opts) {
3652 qemu_opts_del(chr->opts);
3653 }
3654 g_free(chr);
3655 }
3656
3657 ChardevInfoList *qmp_query_chardev(Error **errp)
3658 {
3659 ChardevInfoList *chr_list = NULL;
3660 CharDriverState *chr;
3661
3662 QTAILQ_FOREACH(chr, &chardevs, next) {
3663 ChardevInfoList *info = g_malloc0(sizeof(*info));
3664 info->value = g_malloc0(sizeof(*info->value));
3665 info->value->label = g_strdup(chr->label);
3666 info->value->filename = g_strdup(chr->filename);
3667
3668 info->next = chr_list;
3669 chr_list = info;
3670 }
3671
3672 return chr_list;
3673 }
3674
3675 ChardevBackendInfoList *qmp_query_chardev_backends(Error **errp)
3676 {
3677 ChardevBackendInfoList *backend_list = NULL;
3678 CharDriver *c = NULL;
3679 GSList *i = NULL;
3680
3681 for (i = backends; i; i = i->next) {
3682 ChardevBackendInfoList *info = g_malloc0(sizeof(*info));
3683 c = i->data;
3684 info->value = g_malloc0(sizeof(*info->value));
3685 info->value->name = g_strdup(c->name);
3686
3687 info->next = backend_list;
3688 backend_list = info;
3689 }
3690
3691 return backend_list;
3692 }
3693
3694 CharDriverState *qemu_chr_find(const char *name)
3695 {
3696 CharDriverState *chr;
3697
3698 QTAILQ_FOREACH(chr, &chardevs, next) {
3699 if (strcmp(chr->label, name) != 0)
3700 continue;
3701 return chr;
3702 }
3703 return NULL;
3704 }
3705
3706 /* Get a character (serial) device interface. */
3707 CharDriverState *qemu_char_get_next_serial(void)
3708 {
3709 static int next_serial;
3710 CharDriverState *chr;
3711
3712 /* FIXME: This function needs to go away: use chardev properties! */
3713
3714 while (next_serial < MAX_SERIAL_PORTS && serial_hds[next_serial]) {
3715 chr = serial_hds[next_serial++];
3716 qemu_chr_fe_claim_no_fail(chr);
3717 return chr;
3718 }
3719 return NULL;
3720 }
3721
3722 QemuOptsList qemu_chardev_opts = {
3723 .name = "chardev",
3724 .implied_opt_name = "backend",
3725 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
3726 .desc = {
3727 {
3728 .name = "backend",
3729 .type = QEMU_OPT_STRING,
3730 },{
3731 .name = "path",
3732 .type = QEMU_OPT_STRING,
3733 },{
3734 .name = "host",
3735 .type = QEMU_OPT_STRING,
3736 },{
3737 .name = "port",
3738 .type = QEMU_OPT_STRING,
3739 },{
3740 .name = "localaddr",
3741 .type = QEMU_OPT_STRING,
3742 },{
3743 .name = "localport",
3744 .type = QEMU_OPT_STRING,
3745 },{
3746 .name = "to",
3747 .type = QEMU_OPT_NUMBER,
3748 },{
3749 .name = "ipv4",
3750 .type = QEMU_OPT_BOOL,
3751 },{
3752 .name = "ipv6",
3753 .type = QEMU_OPT_BOOL,
3754 },{
3755 .name = "wait",
3756 .type = QEMU_OPT_BOOL,
3757 },{
3758 .name = "server",
3759 .type = QEMU_OPT_BOOL,
3760 },{
3761 .name = "delay",
3762 .type = QEMU_OPT_BOOL,
3763 },{
3764 .name = "telnet",
3765 .type = QEMU_OPT_BOOL,
3766 },{
3767 .name = "width",
3768 .type = QEMU_OPT_NUMBER,
3769 },{
3770 .name = "height",
3771 .type = QEMU_OPT_NUMBER,
3772 },{
3773 .name = "cols",
3774 .type = QEMU_OPT_NUMBER,
3775 },{
3776 .name = "rows",
3777 .type = QEMU_OPT_NUMBER,
3778 },{
3779 .name = "mux",
3780 .type = QEMU_OPT_BOOL,
3781 },{
3782 .name = "signal",
3783 .type = QEMU_OPT_BOOL,
3784 },{
3785 .name = "name",
3786 .type = QEMU_OPT_STRING,
3787 },{
3788 .name = "debug",
3789 .type = QEMU_OPT_NUMBER,
3790 },{
3791 .name = "size",
3792 .type = QEMU_OPT_SIZE,
3793 },{
3794 .name = "chardev",
3795 .type = QEMU_OPT_STRING,
3796 },
3797 { /* end of list */ }
3798 },
3799 };
3800
3801 #ifdef _WIN32
3802
3803 static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
3804 {
3805 HANDLE out;
3806
3807 if (file->has_in) {
3808 error_setg(errp, "input file not supported");
3809 return NULL;
3810 }
3811
3812 out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
3813 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
3814 if (out == INVALID_HANDLE_VALUE) {
3815 error_setg(errp, "open %s failed", file->out);
3816 return NULL;
3817 }
3818 return qemu_chr_open_win_file(out);
3819 }
3820
3821 static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
3822 Error **errp)
3823 {
3824 return qemu_chr_open_win_path(serial->device);
3825 }
3826
3827 static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
3828 Error **errp)
3829 {
3830 error_setg(errp, "character device backend type 'parallel' not supported");
3831 return NULL;
3832 }
3833
3834 #else /* WIN32 */
3835
3836 static int qmp_chardev_open_file_source(char *src, int flags,
3837 Error **errp)
3838 {
3839 int fd = -1;
3840
3841 TFR(fd = qemu_open(src, flags, 0666));
3842 if (fd == -1) {
3843 error_setg_file_open(errp, errno, src);
3844 }
3845 return fd;
3846 }
3847
3848 static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
3849 {
3850 int flags, in = -1, out;
3851
3852 flags = O_WRONLY | O_TRUNC | O_CREAT | O_BINARY;
3853 out = qmp_chardev_open_file_source(file->out, flags, errp);
3854 if (out < 0) {
3855 return NULL;
3856 }
3857
3858 if (file->has_in) {
3859 flags = O_RDONLY;
3860 in = qmp_chardev_open_file_source(file->in, flags, errp);
3861 if (in < 0) {
3862 qemu_close(out);
3863 return NULL;
3864 }
3865 }
3866
3867 return qemu_chr_open_fd(in, out);
3868 }
3869
3870 static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
3871 Error **errp)
3872 {
3873 #ifdef HAVE_CHARDEV_TTY
3874 int fd;
3875
3876 fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
3877 if (fd < 0) {
3878 return NULL;
3879 }
3880 qemu_set_nonblock(fd);
3881 return qemu_chr_open_tty_fd(fd);
3882 #else
3883 error_setg(errp, "character device backend type 'serial' not supported");
3884 return NULL;
3885 #endif
3886 }
3887
3888 static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
3889 Error **errp)
3890 {
3891 #ifdef HAVE_CHARDEV_PARPORT
3892 int fd;
3893
3894 fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
3895 if (fd < 0) {
3896 return NULL;
3897 }
3898 return qemu_chr_open_pp_fd(fd);
3899 #else
3900 error_setg(errp, "character device backend type 'parallel' not supported");
3901 return NULL;
3902 #endif
3903 }
3904
3905 #endif /* WIN32 */
3906
3907 static CharDriverState *qmp_chardev_open_socket(ChardevSocket *sock,
3908 Error **errp)
3909 {
3910 SocketAddress *addr = sock->addr;
3911 bool do_nodelay = sock->has_nodelay ? sock->nodelay : false;
3912 bool is_listen = sock->has_server ? sock->server : true;
3913 bool is_telnet = sock->has_telnet ? sock->telnet : false;
3914 bool is_waitconnect = sock->has_wait ? sock->wait : false;
3915 int fd;
3916
3917 if (is_listen) {
3918 fd = socket_listen(addr, errp);
3919 } else {
3920 fd = socket_connect(addr, errp, NULL, NULL);
3921 }
3922 if (fd < 0) {
3923 return NULL;
3924 }
3925 return qemu_chr_open_socket_fd(fd, do_nodelay, is_listen,
3926 is_telnet, is_waitconnect, errp);
3927 }
3928
3929 static CharDriverState *qmp_chardev_open_udp(ChardevUdp *udp,
3930 Error **errp)
3931 {
3932 int fd;
3933
3934 fd = socket_dgram(udp->remote, udp->local, errp);
3935 if (fd < 0) {
3936 return NULL;
3937 }
3938 return qemu_chr_open_udp_fd(fd);
3939 }
3940
3941 ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
3942 Error **errp)
3943 {
3944 ChardevReturn *ret = g_new0(ChardevReturn, 1);
3945 CharDriverState *base, *chr = NULL;
3946
3947 chr = qemu_chr_find(id);
3948 if (chr) {
3949 error_setg(errp, "Chardev '%s' already exists", id);
3950 g_free(ret);
3951 return NULL;
3952 }
3953
3954 switch (backend->kind) {
3955 case CHARDEV_BACKEND_KIND_FILE:
3956 chr = qmp_chardev_open_file(backend->file, errp);
3957 break;
3958 case CHARDEV_BACKEND_KIND_SERIAL:
3959 chr = qmp_chardev_open_serial(backend->serial, errp);
3960 break;
3961 case CHARDEV_BACKEND_KIND_PARALLEL:
3962 chr = qmp_chardev_open_parallel(backend->parallel, errp);
3963 break;
3964 case CHARDEV_BACKEND_KIND_PIPE:
3965 chr = qemu_chr_open_pipe(backend->pipe);
3966 break;
3967 case CHARDEV_BACKEND_KIND_SOCKET:
3968 chr = qmp_chardev_open_socket(backend->socket, errp);
3969 break;
3970 case CHARDEV_BACKEND_KIND_UDP:
3971 chr = qmp_chardev_open_udp(backend->udp, errp);
3972 break;
3973 #ifdef HAVE_CHARDEV_TTY
3974 case CHARDEV_BACKEND_KIND_PTY:
3975 chr = qemu_chr_open_pty(id, ret);
3976 break;
3977 #endif
3978 case CHARDEV_BACKEND_KIND_NULL:
3979 chr = qemu_chr_open_null();
3980 break;
3981 case CHARDEV_BACKEND_KIND_MUX:
3982 base = qemu_chr_find(backend->mux->chardev);
3983 if (base == NULL) {
3984 error_setg(errp, "mux: base chardev %s not found",
3985 backend->mux->chardev);
3986 break;
3987 }
3988 chr = qemu_chr_open_mux(base);
3989 break;
3990 case CHARDEV_BACKEND_KIND_MSMOUSE:
3991 chr = qemu_chr_open_msmouse();
3992 break;
3993 #ifdef CONFIG_BRLAPI
3994 case CHARDEV_BACKEND_KIND_BRAILLE:
3995 chr = chr_baum_init();
3996 break;
3997 #endif
3998 case CHARDEV_BACKEND_KIND_STDIO:
3999 chr = qemu_chr_open_stdio(backend->stdio);
4000 break;
4001 #ifdef _WIN32
4002 case CHARDEV_BACKEND_KIND_CONSOLE:
4003 chr = qemu_chr_open_win_con();
4004 break;
4005 #endif
4006 #ifdef CONFIG_SPICE
4007 case CHARDEV_BACKEND_KIND_SPICEVMC:
4008 chr = qemu_chr_open_spice_vmc(backend->spicevmc->type);
4009 break;
4010 case CHARDEV_BACKEND_KIND_SPICEPORT:
4011 chr = qemu_chr_open_spice_port(backend->spiceport->fqdn);
4012 break;
4013 #endif
4014 case CHARDEV_BACKEND_KIND_VC:
4015 chr = vc_init(backend->vc);
4016 break;
4017 case CHARDEV_BACKEND_KIND_RINGBUF:
4018 case CHARDEV_BACKEND_KIND_MEMORY:
4019 chr = qemu_chr_open_ringbuf(backend->ringbuf, errp);
4020 break;
4021 default:
4022 error_setg(errp, "unknown chardev backend (%d)", backend->kind);
4023 break;
4024 }
4025
4026 /*
4027 * Character backend open hasn't been fully converted to the Error
4028 * API. Some opens fail without setting an error. Set a generic
4029 * error then.
4030 * TODO full conversion to Error API
4031 */
4032 if (chr == NULL && errp && !*errp) {
4033 error_setg(errp, "Failed to create chardev");
4034 }
4035 if (chr) {
4036 chr->label = g_strdup(id);
4037 chr->avail_connections =
4038 (backend->kind == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1;
4039 if (!chr->filename) {
4040 chr->filename = g_strdup(ChardevBackendKind_lookup[backend->kind]);
4041 }
4042 if (!chr->explicit_be_open) {
4043 qemu_chr_be_event(chr, CHR_EVENT_OPENED);
4044 }
4045 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
4046 return ret;
4047 } else {
4048 g_free(ret);
4049 return NULL;
4050 }
4051 }
4052
4053 void qmp_chardev_remove(const char *id, Error **errp)
4054 {
4055 CharDriverState *chr;
4056
4057 chr = qemu_chr_find(id);
4058 if (NULL == chr) {
4059 error_setg(errp, "Chardev '%s' not found", id);
4060 return;
4061 }
4062 if (chr->chr_can_read || chr->chr_read ||
4063 chr->chr_event || chr->handler_opaque) {
4064 error_setg(errp, "Chardev '%s' is busy", id);
4065 return;
4066 }
4067 qemu_chr_delete(chr);
4068 }
4069
4070 static void register_types(void)
4071 {
4072 register_char_driver_qapi("null", CHARDEV_BACKEND_KIND_NULL, NULL);
4073 register_char_driver("socket", qemu_chr_open_socket);
4074 register_char_driver("udp", qemu_chr_open_udp);
4075 register_char_driver_qapi("ringbuf", CHARDEV_BACKEND_KIND_RINGBUF,
4076 qemu_chr_parse_ringbuf);
4077 register_char_driver_qapi("file", CHARDEV_BACKEND_KIND_FILE,
4078 qemu_chr_parse_file_out);
4079 register_char_driver_qapi("stdio", CHARDEV_BACKEND_KIND_STDIO,
4080 qemu_chr_parse_stdio);
4081 register_char_driver_qapi("serial", CHARDEV_BACKEND_KIND_SERIAL,
4082 qemu_chr_parse_serial);
4083 register_char_driver_qapi("tty", CHARDEV_BACKEND_KIND_SERIAL,
4084 qemu_chr_parse_serial);
4085 register_char_driver_qapi("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
4086 qemu_chr_parse_parallel);
4087 register_char_driver_qapi("parport", CHARDEV_BACKEND_KIND_PARALLEL,
4088 qemu_chr_parse_parallel);
4089 register_char_driver_qapi("pty", CHARDEV_BACKEND_KIND_PTY, NULL);
4090 register_char_driver_qapi("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL);
4091 register_char_driver_qapi("pipe", CHARDEV_BACKEND_KIND_PIPE,
4092 qemu_chr_parse_pipe);
4093 register_char_driver_qapi("mux", CHARDEV_BACKEND_KIND_MUX,
4094 qemu_chr_parse_mux);
4095 /* Bug-compatibility: */
4096 register_char_driver_qapi("memory", CHARDEV_BACKEND_KIND_MEMORY,
4097 qemu_chr_parse_ringbuf);
4098 /* this must be done after machine init, since we register FEs with muxes
4099 * as part of realize functions like serial_isa_realizefn when -nographic
4100 * is specified
4101 */
4102 qemu_add_machine_init_done_notifier(&muxes_realize_notify);
4103 }
4104
4105 type_init(register_types);
Random patches