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