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qemu-char: Cleanup: consolidate fe_open/fe_close into fe_set_open
[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_guest_open = NULL;
518 chr->chr_guest_close = NULL;
519
520 /* Muxes are always open on creation */
521 qemu_chr_be_generic_open(chr);
522
523 return chr;
524 }
525
526
527 #ifdef _WIN32
528 int send_all(int fd, const void *buf, int len1)
529 {
530 int ret, len;
531
532 len = len1;
533 while (len > 0) {
534 ret = send(fd, buf, len, 0);
535 if (ret < 0) {
536 errno = WSAGetLastError();
537 if (errno != WSAEWOULDBLOCK) {
538 return -1;
539 }
540 } else if (ret == 0) {
541 break;
542 } else {
543 buf += ret;
544 len -= ret;
545 }
546 }
547 return len1 - len;
548 }
549
550 #else
551
552 int send_all(int fd, const void *_buf, int len1)
553 {
554 int ret, len;
555 const uint8_t *buf = _buf;
556
557 len = len1;
558 while (len > 0) {
559 ret = write(fd, buf, len);
560 if (ret < 0) {
561 if (errno != EINTR && errno != EAGAIN)
562 return -1;
563 } else if (ret == 0) {
564 break;
565 } else {
566 buf += ret;
567 len -= ret;
568 }
569 }
570 return len1 - len;
571 }
572
573 int recv_all(int fd, void *_buf, int len1, bool single_read)
574 {
575 int ret, len;
576 uint8_t *buf = _buf;
577
578 len = len1;
579 while ((len > 0) && (ret = read(fd, buf, len)) != 0) {
580 if (ret < 0) {
581 if (errno != EINTR && errno != EAGAIN) {
582 return -1;
583 }
584 continue;
585 } else {
586 if (single_read) {
587 return ret;
588 }
589 buf += ret;
590 len -= ret;
591 }
592 }
593 return len1 - len;
594 }
595
596 #endif /* !_WIN32 */
597
598 typedef struct IOWatchPoll
599 {
600 GSource *src;
601 int max_size;
602
603 IOCanReadHandler *fd_can_read;
604 void *opaque;
605
606 QTAILQ_ENTRY(IOWatchPoll) node;
607 } IOWatchPoll;
608
609 static QTAILQ_HEAD(, IOWatchPoll) io_watch_poll_list =
610 QTAILQ_HEAD_INITIALIZER(io_watch_poll_list);
611
612 static IOWatchPoll *io_watch_poll_from_source(GSource *source)
613 {
614 IOWatchPoll *i;
615
616 QTAILQ_FOREACH(i, &io_watch_poll_list, node) {
617 if (i->src == source) {
618 return i;
619 }
620 }
621
622 return NULL;
623 }
624
625 static gboolean io_watch_poll_prepare(GSource *source, gint *timeout_)
626 {
627 IOWatchPoll *iwp = io_watch_poll_from_source(source);
628
629 iwp->max_size = iwp->fd_can_read(iwp->opaque);
630 if (iwp->max_size == 0) {
631 return FALSE;
632 }
633
634 return g_io_watch_funcs.prepare(source, timeout_);
635 }
636
637 static gboolean io_watch_poll_check(GSource *source)
638 {
639 IOWatchPoll *iwp = io_watch_poll_from_source(source);
640
641 if (iwp->max_size == 0) {
642 return FALSE;
643 }
644
645 return g_io_watch_funcs.check(source);
646 }
647
648 static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
649 gpointer user_data)
650 {
651 return g_io_watch_funcs.dispatch(source, callback, user_data);
652 }
653
654 static void io_watch_poll_finalize(GSource *source)
655 {
656 IOWatchPoll *iwp = io_watch_poll_from_source(source);
657 QTAILQ_REMOVE(&io_watch_poll_list, iwp, node);
658 g_io_watch_funcs.finalize(source);
659 }
660
661 static GSourceFuncs io_watch_poll_funcs = {
662 .prepare = io_watch_poll_prepare,
663 .check = io_watch_poll_check,
664 .dispatch = io_watch_poll_dispatch,
665 .finalize = io_watch_poll_finalize,
666 };
667
668 /* Can only be used for read */
669 static guint io_add_watch_poll(GIOChannel *channel,
670 IOCanReadHandler *fd_can_read,
671 GIOFunc fd_read,
672 gpointer user_data)
673 {
674 IOWatchPoll *iwp;
675 GSource *src;
676 guint tag;
677
678 src = g_io_create_watch(channel, G_IO_IN | G_IO_ERR | G_IO_HUP);
679 g_source_set_funcs(src, &io_watch_poll_funcs);
680 g_source_set_callback(src, (GSourceFunc)fd_read, user_data, NULL);
681 tag = g_source_attach(src, NULL);
682 g_source_unref(src);
683
684 iwp = g_malloc0(sizeof(*iwp));
685 iwp->src = src;
686 iwp->max_size = 0;
687 iwp->fd_can_read = fd_can_read;
688 iwp->opaque = user_data;
689
690 QTAILQ_INSERT_HEAD(&io_watch_poll_list, iwp, node);
691
692 return tag;
693 }
694
695 #ifndef _WIN32
696 static GIOChannel *io_channel_from_fd(int fd)
697 {
698 GIOChannel *chan;
699
700 if (fd == -1) {
701 return NULL;
702 }
703
704 chan = g_io_channel_unix_new(fd);
705
706 g_io_channel_set_encoding(chan, NULL, NULL);
707 g_io_channel_set_buffered(chan, FALSE);
708
709 return chan;
710 }
711 #endif
712
713 static GIOChannel *io_channel_from_socket(int fd)
714 {
715 GIOChannel *chan;
716
717 if (fd == -1) {
718 return NULL;
719 }
720
721 #ifdef _WIN32
722 chan = g_io_channel_win32_new_socket(fd);
723 #else
724 chan = g_io_channel_unix_new(fd);
725 #endif
726
727 g_io_channel_set_encoding(chan, NULL, NULL);
728 g_io_channel_set_buffered(chan, FALSE);
729
730 return chan;
731 }
732
733 static int io_channel_send_all(GIOChannel *fd, const void *_buf, int len1)
734 {
735 GIOStatus status;
736 gsize bytes_written;
737 int len;
738 const uint8_t *buf = _buf;
739
740 len = len1;
741 while (len > 0) {
742 status = g_io_channel_write_chars(fd, (const gchar *)buf, len,
743 &bytes_written, NULL);
744 if (status != G_IO_STATUS_NORMAL) {
745 if (status == G_IO_STATUS_AGAIN) {
746 errno = EAGAIN;
747 return -1;
748 } else {
749 errno = EINVAL;
750 return -1;
751 }
752 } else if (status == G_IO_STATUS_EOF) {
753 break;
754 } else {
755 buf += bytes_written;
756 len -= bytes_written;
757 }
758 }
759 return len1 - len;
760 }
761
762 #ifndef _WIN32
763
764 typedef struct FDCharDriver {
765 CharDriverState *chr;
766 GIOChannel *fd_in, *fd_out;
767 guint fd_in_tag;
768 int max_size;
769 QTAILQ_ENTRY(FDCharDriver) node;
770 } FDCharDriver;
771
772 static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
773 {
774 FDCharDriver *s = chr->opaque;
775
776 return io_channel_send_all(s->fd_out, buf, len);
777 }
778
779 static gboolean fd_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
780 {
781 CharDriverState *chr = opaque;
782 FDCharDriver *s = chr->opaque;
783 int len;
784 uint8_t buf[READ_BUF_LEN];
785 GIOStatus status;
786 gsize bytes_read;
787
788 len = sizeof(buf);
789 if (len > s->max_size) {
790 len = s->max_size;
791 }
792 if (len == 0) {
793 return FALSE;
794 }
795
796 status = g_io_channel_read_chars(chan, (gchar *)buf,
797 len, &bytes_read, NULL);
798 if (status == G_IO_STATUS_EOF) {
799 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
800 return FALSE;
801 }
802 if (status == G_IO_STATUS_NORMAL) {
803 qemu_chr_be_write(chr, buf, bytes_read);
804 }
805
806 return TRUE;
807 }
808
809 static int fd_chr_read_poll(void *opaque)
810 {
811 CharDriverState *chr = opaque;
812 FDCharDriver *s = chr->opaque;
813
814 s->max_size = qemu_chr_be_can_write(chr);
815 return s->max_size;
816 }
817
818 static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
819 {
820 FDCharDriver *s = chr->opaque;
821 return g_io_create_watch(s->fd_out, cond);
822 }
823
824 static void fd_chr_update_read_handler(CharDriverState *chr)
825 {
826 FDCharDriver *s = chr->opaque;
827
828 if (s->fd_in_tag) {
829 g_source_remove(s->fd_in_tag);
830 }
831
832 if (s->fd_in) {
833 s->fd_in_tag = io_add_watch_poll(s->fd_in, fd_chr_read_poll, fd_chr_read, chr);
834 }
835 }
836
837 static void fd_chr_close(struct CharDriverState *chr)
838 {
839 FDCharDriver *s = chr->opaque;
840
841 if (s->fd_in_tag) {
842 g_source_remove(s->fd_in_tag);
843 s->fd_in_tag = 0;
844 }
845
846 if (s->fd_in) {
847 g_io_channel_unref(s->fd_in);
848 }
849 if (s->fd_out) {
850 g_io_channel_unref(s->fd_out);
851 }
852
853 g_free(s);
854 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
855 }
856
857 /* open a character device to a unix fd */
858 static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
859 {
860 CharDriverState *chr;
861 FDCharDriver *s;
862
863 chr = g_malloc0(sizeof(CharDriverState));
864 s = g_malloc0(sizeof(FDCharDriver));
865 s->fd_in = io_channel_from_fd(fd_in);
866 s->fd_out = io_channel_from_fd(fd_out);
867 fcntl(fd_out, F_SETFL, O_NONBLOCK);
868 s->chr = chr;
869 chr->opaque = s;
870 chr->chr_add_watch = fd_chr_add_watch;
871 chr->chr_write = fd_chr_write;
872 chr->chr_update_read_handler = fd_chr_update_read_handler;
873 chr->chr_close = fd_chr_close;
874
875 qemu_chr_be_generic_open(chr);
876
877 return chr;
878 }
879
880 static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
881 {
882 int fd_in, fd_out;
883 char filename_in[256], filename_out[256];
884 const char *filename = opts->device;
885
886 if (filename == NULL) {
887 fprintf(stderr, "chardev: pipe: no filename given\n");
888 return NULL;
889 }
890
891 snprintf(filename_in, 256, "%s.in", filename);
892 snprintf(filename_out, 256, "%s.out", filename);
893 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
894 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
895 if (fd_in < 0 || fd_out < 0) {
896 if (fd_in >= 0)
897 close(fd_in);
898 if (fd_out >= 0)
899 close(fd_out);
900 TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
901 if (fd_in < 0) {
902 return NULL;
903 }
904 }
905 return qemu_chr_open_fd(fd_in, fd_out);
906 }
907
908 /* init terminal so that we can grab keys */
909 static struct termios oldtty;
910 static int old_fd0_flags;
911 static bool stdio_allow_signal;
912
913 static void term_exit(void)
914 {
915 tcsetattr (0, TCSANOW, &oldtty);
916 fcntl(0, F_SETFL, old_fd0_flags);
917 }
918
919 static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
920 {
921 struct termios tty;
922
923 tty = oldtty;
924 if (!echo) {
925 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
926 |INLCR|IGNCR|ICRNL|IXON);
927 tty.c_oflag |= OPOST;
928 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
929 tty.c_cflag &= ~(CSIZE|PARENB);
930 tty.c_cflag |= CS8;
931 tty.c_cc[VMIN] = 1;
932 tty.c_cc[VTIME] = 0;
933 }
934 /* if graphical mode, we allow Ctrl-C handling */
935 if (!stdio_allow_signal)
936 tty.c_lflag &= ~ISIG;
937
938 tcsetattr (0, TCSANOW, &tty);
939 }
940
941 static void qemu_chr_close_stdio(struct CharDriverState *chr)
942 {
943 term_exit();
944 fd_chr_close(chr);
945 }
946
947 static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
948 {
949 CharDriverState *chr;
950
951 if (is_daemonized()) {
952 error_report("cannot use stdio with -daemonize");
953 return NULL;
954 }
955 old_fd0_flags = fcntl(0, F_GETFL);
956 tcgetattr (0, &oldtty);
957 fcntl(0, F_SETFL, O_NONBLOCK);
958 atexit(term_exit);
959
960 chr = qemu_chr_open_fd(0, 1);
961 chr->chr_close = qemu_chr_close_stdio;
962 chr->chr_set_echo = qemu_chr_set_echo_stdio;
963 stdio_allow_signal = display_type != DT_NOGRAPHIC;
964 if (opts->has_signal) {
965 stdio_allow_signal = opts->signal;
966 }
967 qemu_chr_fe_set_echo(chr, false);
968
969 return chr;
970 }
971
972 #ifdef __sun__
973 /* Once Solaris has openpty(), this is going to be removed. */
974 static int openpty(int *amaster, int *aslave, char *name,
975 struct termios *termp, struct winsize *winp)
976 {
977 const char *slave;
978 int mfd = -1, sfd = -1;
979
980 *amaster = *aslave = -1;
981
982 mfd = open("/dev/ptmx", O_RDWR | O_NOCTTY);
983 if (mfd < 0)
984 goto err;
985
986 if (grantpt(mfd) == -1 || unlockpt(mfd) == -1)
987 goto err;
988
989 if ((slave = ptsname(mfd)) == NULL)
990 goto err;
991
992 if ((sfd = open(slave, O_RDONLY | O_NOCTTY)) == -1)
993 goto err;
994
995 if (ioctl(sfd, I_PUSH, "ptem") == -1 ||
996 (termp != NULL && tcgetattr(sfd, termp) < 0))
997 goto err;
998
999 if (amaster)
1000 *amaster = mfd;
1001 if (aslave)
1002 *aslave = sfd;
1003 if (winp)
1004 ioctl(sfd, TIOCSWINSZ, winp);
1005
1006 return 0;
1007
1008 err:
1009 if (sfd != -1)
1010 close(sfd);
1011 close(mfd);
1012 return -1;
1013 }
1014
1015 static void cfmakeraw (struct termios *termios_p)
1016 {
1017 termios_p->c_iflag &=
1018 ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
1019 termios_p->c_oflag &= ~OPOST;
1020 termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
1021 termios_p->c_cflag &= ~(CSIZE|PARENB);
1022 termios_p->c_cflag |= CS8;
1023
1024 termios_p->c_cc[VMIN] = 0;
1025 termios_p->c_cc[VTIME] = 0;
1026 }
1027 #endif
1028
1029 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
1030 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
1031 || defined(__GLIBC__)
1032
1033 #define HAVE_CHARDEV_TTY 1
1034
1035 typedef struct {
1036 GIOChannel *fd;
1037 guint fd_tag;
1038 int connected;
1039 int polling;
1040 int read_bytes;
1041 guint timer_tag;
1042 } PtyCharDriver;
1043
1044 static void pty_chr_update_read_handler(CharDriverState *chr);
1045 static void pty_chr_state(CharDriverState *chr, int connected);
1046
1047 static gboolean pty_chr_timer(gpointer opaque)
1048 {
1049 struct CharDriverState *chr = opaque;
1050 PtyCharDriver *s = chr->opaque;
1051
1052 if (s->connected) {
1053 goto out;
1054 }
1055 if (s->polling) {
1056 /* If we arrive here without polling being cleared due
1057 * read returning -EIO, then we are (re-)connected */
1058 pty_chr_state(chr, 1);
1059 goto out;
1060 }
1061
1062 /* Next poll ... */
1063 pty_chr_update_read_handler(chr);
1064
1065 out:
1066 return FALSE;
1067 }
1068
1069 static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
1070 {
1071 PtyCharDriver *s = chr->opaque;
1072
1073 if (s->timer_tag) {
1074 g_source_remove(s->timer_tag);
1075 s->timer_tag = 0;
1076 }
1077
1078 if (ms == 1000) {
1079 s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
1080 } else {
1081 s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
1082 }
1083 }
1084
1085 static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1086 {
1087 PtyCharDriver *s = chr->opaque;
1088
1089 if (!s->connected) {
1090 /* guest sends data, check for (re-)connect */
1091 pty_chr_update_read_handler(chr);
1092 return 0;
1093 }
1094 return io_channel_send_all(s->fd, buf, len);
1095 }
1096
1097 static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1098 {
1099 PtyCharDriver *s = chr->opaque;
1100 return g_io_create_watch(s->fd, cond);
1101 }
1102
1103 static int pty_chr_read_poll(void *opaque)
1104 {
1105 CharDriverState *chr = opaque;
1106 PtyCharDriver *s = chr->opaque;
1107
1108 s->read_bytes = qemu_chr_be_can_write(chr);
1109 return s->read_bytes;
1110 }
1111
1112 static gboolean pty_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
1113 {
1114 CharDriverState *chr = opaque;
1115 PtyCharDriver *s = chr->opaque;
1116 gsize size, len;
1117 uint8_t buf[READ_BUF_LEN];
1118 GIOStatus status;
1119
1120 len = sizeof(buf);
1121 if (len > s->read_bytes)
1122 len = s->read_bytes;
1123 if (len == 0)
1124 return FALSE;
1125 status = g_io_channel_read_chars(s->fd, (gchar *)buf, len, &size, NULL);
1126 if (status != G_IO_STATUS_NORMAL) {
1127 pty_chr_state(chr, 0);
1128 return FALSE;
1129 } else {
1130 pty_chr_state(chr, 1);
1131 qemu_chr_be_write(chr, buf, size);
1132 }
1133 return TRUE;
1134 }
1135
1136 static void pty_chr_update_read_handler(CharDriverState *chr)
1137 {
1138 PtyCharDriver *s = chr->opaque;
1139
1140 if (s->fd_tag) {
1141 g_source_remove(s->fd_tag);
1142 }
1143
1144 s->fd_tag = io_add_watch_poll(s->fd, pty_chr_read_poll, pty_chr_read, chr);
1145 s->polling = 1;
1146 /*
1147 * Short timeout here: just need wait long enougth that qemu makes
1148 * it through the poll loop once. When reconnected we want a
1149 * short timeout so we notice it almost instantly. Otherwise
1150 * read() gives us -EIO instantly, making pty_chr_state() reset the
1151 * timeout to the normal (much longer) poll interval before the
1152 * timer triggers.
1153 */
1154 pty_chr_rearm_timer(chr, 10);
1155 }
1156
1157 static void pty_chr_state(CharDriverState *chr, int connected)
1158 {
1159 PtyCharDriver *s = chr->opaque;
1160
1161 if (!connected) {
1162 g_source_remove(s->fd_tag);
1163 s->fd_tag = 0;
1164 s->connected = 0;
1165 s->polling = 0;
1166 /* (re-)connect poll interval for idle guests: once per second.
1167 * We check more frequently in case the guests sends data to
1168 * the virtual device linked to our pty. */
1169 pty_chr_rearm_timer(chr, 1000);
1170 } else {
1171 if (!s->connected)
1172 qemu_chr_be_generic_open(chr);
1173 s->connected = 1;
1174 }
1175 }
1176
1177
1178 static void pty_chr_close(struct CharDriverState *chr)
1179 {
1180 PtyCharDriver *s = chr->opaque;
1181 int fd;
1182
1183 if (s->fd_tag) {
1184 g_source_remove(s->fd_tag);
1185 }
1186 fd = g_io_channel_unix_get_fd(s->fd);
1187 g_io_channel_unref(s->fd);
1188 close(fd);
1189 if (s->timer_tag) {
1190 g_source_remove(s->timer_tag);
1191 }
1192 g_free(s);
1193 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1194 }
1195
1196 static CharDriverState *qemu_chr_open_pty(const char *id,
1197 ChardevReturn *ret)
1198 {
1199 CharDriverState *chr;
1200 PtyCharDriver *s;
1201 struct termios tty;
1202 int master_fd, slave_fd;
1203 #if defined(__OpenBSD__) || defined(__DragonFly__)
1204 char pty_name[PATH_MAX];
1205 #define q_ptsname(x) pty_name
1206 #else
1207 char *pty_name = NULL;
1208 #define q_ptsname(x) ptsname(x)
1209 #endif
1210
1211 if (openpty(&master_fd, &slave_fd, pty_name, NULL, NULL) < 0) {
1212 return NULL;
1213 }
1214
1215 /* Set raw attributes on the pty. */
1216 tcgetattr(slave_fd, &tty);
1217 cfmakeraw(&tty);
1218 tcsetattr(slave_fd, TCSAFLUSH, &tty);
1219 close(slave_fd);
1220
1221 chr = g_malloc0(sizeof(CharDriverState));
1222
1223 chr->filename = g_strdup_printf("pty:%s", q_ptsname(master_fd));
1224 ret->pty = g_strdup(q_ptsname(master_fd));
1225 ret->has_pty = true;
1226
1227 fprintf(stderr, "char device redirected to %s (label %s)\n",
1228 q_ptsname(master_fd), id);
1229
1230 s = g_malloc0(sizeof(PtyCharDriver));
1231 chr->opaque = s;
1232 chr->chr_write = pty_chr_write;
1233 chr->chr_update_read_handler = pty_chr_update_read_handler;
1234 chr->chr_close = pty_chr_close;
1235 chr->chr_add_watch = pty_chr_add_watch;
1236
1237 s->fd = io_channel_from_fd(master_fd);
1238 s->timer_tag = 0;
1239
1240 return chr;
1241 }
1242
1243 static void tty_serial_init(int fd, int speed,
1244 int parity, int data_bits, int stop_bits)
1245 {
1246 struct termios tty;
1247 speed_t spd;
1248
1249 #if 0
1250 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1251 speed, parity, data_bits, stop_bits);
1252 #endif
1253 tcgetattr (fd, &tty);
1254
1255 #define check_speed(val) if (speed <= val) { spd = B##val; break; }
1256 speed = speed * 10 / 11;
1257 do {
1258 check_speed(50);
1259 check_speed(75);
1260 check_speed(110);
1261 check_speed(134);
1262 check_speed(150);
1263 check_speed(200);
1264 check_speed(300);
1265 check_speed(600);
1266 check_speed(1200);
1267 check_speed(1800);
1268 check_speed(2400);
1269 check_speed(4800);
1270 check_speed(9600);
1271 check_speed(19200);
1272 check_speed(38400);
1273 /* Non-Posix values follow. They may be unsupported on some systems. */
1274 check_speed(57600);
1275 check_speed(115200);
1276 #ifdef B230400
1277 check_speed(230400);
1278 #endif
1279 #ifdef B460800
1280 check_speed(460800);
1281 #endif
1282 #ifdef B500000
1283 check_speed(500000);
1284 #endif
1285 #ifdef B576000
1286 check_speed(576000);
1287 #endif
1288 #ifdef B921600
1289 check_speed(921600);
1290 #endif
1291 #ifdef B1000000
1292 check_speed(1000000);
1293 #endif
1294 #ifdef B1152000
1295 check_speed(1152000);
1296 #endif
1297 #ifdef B1500000
1298 check_speed(1500000);
1299 #endif
1300 #ifdef B2000000
1301 check_speed(2000000);
1302 #endif
1303 #ifdef B2500000
1304 check_speed(2500000);
1305 #endif
1306 #ifdef B3000000
1307 check_speed(3000000);
1308 #endif
1309 #ifdef B3500000
1310 check_speed(3500000);
1311 #endif
1312 #ifdef B4000000
1313 check_speed(4000000);
1314 #endif
1315 spd = B115200;
1316 } while (0);
1317
1318 cfsetispeed(&tty, spd);
1319 cfsetospeed(&tty, spd);
1320
1321 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1322 |INLCR|IGNCR|ICRNL|IXON);
1323 tty.c_oflag |= OPOST;
1324 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1325 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1326 switch(data_bits) {
1327 default:
1328 case 8:
1329 tty.c_cflag |= CS8;
1330 break;
1331 case 7:
1332 tty.c_cflag |= CS7;
1333 break;
1334 case 6:
1335 tty.c_cflag |= CS6;
1336 break;
1337 case 5:
1338 tty.c_cflag |= CS5;
1339 break;
1340 }
1341 switch(parity) {
1342 default:
1343 case 'N':
1344 break;
1345 case 'E':
1346 tty.c_cflag |= PARENB;
1347 break;
1348 case 'O':
1349 tty.c_cflag |= PARENB | PARODD;
1350 break;
1351 }
1352 if (stop_bits == 2)
1353 tty.c_cflag |= CSTOPB;
1354
1355 tcsetattr (fd, TCSANOW, &tty);
1356 }
1357
1358 static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1359 {
1360 FDCharDriver *s = chr->opaque;
1361
1362 switch(cmd) {
1363 case CHR_IOCTL_SERIAL_SET_PARAMS:
1364 {
1365 QEMUSerialSetParams *ssp = arg;
1366 tty_serial_init(g_io_channel_unix_get_fd(s->fd_in),
1367 ssp->speed, ssp->parity,
1368 ssp->data_bits, ssp->stop_bits);
1369 }
1370 break;
1371 case CHR_IOCTL_SERIAL_SET_BREAK:
1372 {
1373 int enable = *(int *)arg;
1374 if (enable) {
1375 tcsendbreak(g_io_channel_unix_get_fd(s->fd_in), 1);
1376 }
1377 }
1378 break;
1379 case CHR_IOCTL_SERIAL_GET_TIOCM:
1380 {
1381 int sarg = 0;
1382 int *targ = (int *)arg;
1383 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &sarg);
1384 *targ = 0;
1385 if (sarg & TIOCM_CTS)
1386 *targ |= CHR_TIOCM_CTS;
1387 if (sarg & TIOCM_CAR)
1388 *targ |= CHR_TIOCM_CAR;
1389 if (sarg & TIOCM_DSR)
1390 *targ |= CHR_TIOCM_DSR;
1391 if (sarg & TIOCM_RI)
1392 *targ |= CHR_TIOCM_RI;
1393 if (sarg & TIOCM_DTR)
1394 *targ |= CHR_TIOCM_DTR;
1395 if (sarg & TIOCM_RTS)
1396 *targ |= CHR_TIOCM_RTS;
1397 }
1398 break;
1399 case CHR_IOCTL_SERIAL_SET_TIOCM:
1400 {
1401 int sarg = *(int *)arg;
1402 int targ = 0;
1403 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &targ);
1404 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1405 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1406 if (sarg & CHR_TIOCM_CTS)
1407 targ |= TIOCM_CTS;
1408 if (sarg & CHR_TIOCM_CAR)
1409 targ |= TIOCM_CAR;
1410 if (sarg & CHR_TIOCM_DSR)
1411 targ |= TIOCM_DSR;
1412 if (sarg & CHR_TIOCM_RI)
1413 targ |= TIOCM_RI;
1414 if (sarg & CHR_TIOCM_DTR)
1415 targ |= TIOCM_DTR;
1416 if (sarg & CHR_TIOCM_RTS)
1417 targ |= TIOCM_RTS;
1418 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMSET, &targ);
1419 }
1420 break;
1421 default:
1422 return -ENOTSUP;
1423 }
1424 return 0;
1425 }
1426
1427 static void qemu_chr_close_tty(CharDriverState *chr)
1428 {
1429 FDCharDriver *s = chr->opaque;
1430 int fd = -1;
1431
1432 if (s) {
1433 fd = g_io_channel_unix_get_fd(s->fd_in);
1434 }
1435
1436 fd_chr_close(chr);
1437
1438 if (fd >= 0) {
1439 close(fd);
1440 }
1441 }
1442
1443 static CharDriverState *qemu_chr_open_tty_fd(int fd)
1444 {
1445 CharDriverState *chr;
1446
1447 tty_serial_init(fd, 115200, 'N', 8, 1);
1448 chr = qemu_chr_open_fd(fd, fd);
1449 chr->chr_ioctl = tty_serial_ioctl;
1450 chr->chr_close = qemu_chr_close_tty;
1451 return chr;
1452 }
1453 #endif /* __linux__ || __sun__ */
1454
1455 #if defined(__linux__)
1456
1457 #define HAVE_CHARDEV_PARPORT 1
1458
1459 typedef struct {
1460 int fd;
1461 int mode;
1462 } ParallelCharDriver;
1463
1464 static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1465 {
1466 if (s->mode != mode) {
1467 int m = mode;
1468 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1469 return 0;
1470 s->mode = mode;
1471 }
1472 return 1;
1473 }
1474
1475 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1476 {
1477 ParallelCharDriver *drv = chr->opaque;
1478 int fd = drv->fd;
1479 uint8_t b;
1480
1481 switch(cmd) {
1482 case CHR_IOCTL_PP_READ_DATA:
1483 if (ioctl(fd, PPRDATA, &b) < 0)
1484 return -ENOTSUP;
1485 *(uint8_t *)arg = b;
1486 break;
1487 case CHR_IOCTL_PP_WRITE_DATA:
1488 b = *(uint8_t *)arg;
1489 if (ioctl(fd, PPWDATA, &b) < 0)
1490 return -ENOTSUP;
1491 break;
1492 case CHR_IOCTL_PP_READ_CONTROL:
1493 if (ioctl(fd, PPRCONTROL, &b) < 0)
1494 return -ENOTSUP;
1495 /* Linux gives only the lowest bits, and no way to know data
1496 direction! For better compatibility set the fixed upper
1497 bits. */
1498 *(uint8_t *)arg = b | 0xc0;
1499 break;
1500 case CHR_IOCTL_PP_WRITE_CONTROL:
1501 b = *(uint8_t *)arg;
1502 if (ioctl(fd, PPWCONTROL, &b) < 0)
1503 return -ENOTSUP;
1504 break;
1505 case CHR_IOCTL_PP_READ_STATUS:
1506 if (ioctl(fd, PPRSTATUS, &b) < 0)
1507 return -ENOTSUP;
1508 *(uint8_t *)arg = b;
1509 break;
1510 case CHR_IOCTL_PP_DATA_DIR:
1511 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1512 return -ENOTSUP;
1513 break;
1514 case CHR_IOCTL_PP_EPP_READ_ADDR:
1515 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1516 struct ParallelIOArg *parg = arg;
1517 int n = read(fd, parg->buffer, parg->count);
1518 if (n != parg->count) {
1519 return -EIO;
1520 }
1521 }
1522 break;
1523 case CHR_IOCTL_PP_EPP_READ:
1524 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1525 struct ParallelIOArg *parg = arg;
1526 int n = read(fd, parg->buffer, parg->count);
1527 if (n != parg->count) {
1528 return -EIO;
1529 }
1530 }
1531 break;
1532 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1533 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1534 struct ParallelIOArg *parg = arg;
1535 int n = write(fd, parg->buffer, parg->count);
1536 if (n != parg->count) {
1537 return -EIO;
1538 }
1539 }
1540 break;
1541 case CHR_IOCTL_PP_EPP_WRITE:
1542 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1543 struct ParallelIOArg *parg = arg;
1544 int n = write(fd, parg->buffer, parg->count);
1545 if (n != parg->count) {
1546 return -EIO;
1547 }
1548 }
1549 break;
1550 default:
1551 return -ENOTSUP;
1552 }
1553 return 0;
1554 }
1555
1556 static void pp_close(CharDriverState *chr)
1557 {
1558 ParallelCharDriver *drv = chr->opaque;
1559 int fd = drv->fd;
1560
1561 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1562 ioctl(fd, PPRELEASE);
1563 close(fd);
1564 g_free(drv);
1565 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1566 }
1567
1568 static CharDriverState *qemu_chr_open_pp_fd(int fd)
1569 {
1570 CharDriverState *chr;
1571 ParallelCharDriver *drv;
1572
1573 if (ioctl(fd, PPCLAIM) < 0) {
1574 close(fd);
1575 return NULL;
1576 }
1577
1578 drv = g_malloc0(sizeof(ParallelCharDriver));
1579 drv->fd = fd;
1580 drv->mode = IEEE1284_MODE_COMPAT;
1581
1582 chr = g_malloc0(sizeof(CharDriverState));
1583 chr->chr_write = null_chr_write;
1584 chr->chr_ioctl = pp_ioctl;
1585 chr->chr_close = pp_close;
1586 chr->opaque = drv;
1587
1588 qemu_chr_be_generic_open(chr);
1589
1590 return chr;
1591 }
1592 #endif /* __linux__ */
1593
1594 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
1595
1596 #define HAVE_CHARDEV_PARPORT 1
1597
1598 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1599 {
1600 int fd = (int)(intptr_t)chr->opaque;
1601 uint8_t b;
1602
1603 switch(cmd) {
1604 case CHR_IOCTL_PP_READ_DATA:
1605 if (ioctl(fd, PPIGDATA, &b) < 0)
1606 return -ENOTSUP;
1607 *(uint8_t *)arg = b;
1608 break;
1609 case CHR_IOCTL_PP_WRITE_DATA:
1610 b = *(uint8_t *)arg;
1611 if (ioctl(fd, PPISDATA, &b) < 0)
1612 return -ENOTSUP;
1613 break;
1614 case CHR_IOCTL_PP_READ_CONTROL:
1615 if (ioctl(fd, PPIGCTRL, &b) < 0)
1616 return -ENOTSUP;
1617 *(uint8_t *)arg = b;
1618 break;
1619 case CHR_IOCTL_PP_WRITE_CONTROL:
1620 b = *(uint8_t *)arg;
1621 if (ioctl(fd, PPISCTRL, &b) < 0)
1622 return -ENOTSUP;
1623 break;
1624 case CHR_IOCTL_PP_READ_STATUS:
1625 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1626 return -ENOTSUP;
1627 *(uint8_t *)arg = b;
1628 break;
1629 default:
1630 return -ENOTSUP;
1631 }
1632 return 0;
1633 }
1634
1635 static CharDriverState *qemu_chr_open_pp_fd(int fd)
1636 {
1637 CharDriverState *chr;
1638
1639 chr = g_malloc0(sizeof(CharDriverState));
1640 chr->opaque = (void *)(intptr_t)fd;
1641 chr->chr_write = null_chr_write;
1642 chr->chr_ioctl = pp_ioctl;
1643 return chr;
1644 }
1645 #endif
1646
1647 #else /* _WIN32 */
1648
1649 typedef struct {
1650 int max_size;
1651 HANDLE hcom, hrecv, hsend;
1652 OVERLAPPED orecv, osend;
1653 BOOL fpipe;
1654 DWORD len;
1655 } WinCharState;
1656
1657 typedef struct {
1658 HANDLE hStdIn;
1659 HANDLE hInputReadyEvent;
1660 HANDLE hInputDoneEvent;
1661 HANDLE hInputThread;
1662 uint8_t win_stdio_buf;
1663 } WinStdioCharState;
1664
1665 #define NSENDBUF 2048
1666 #define NRECVBUF 2048
1667 #define MAXCONNECT 1
1668 #define NTIMEOUT 5000
1669
1670 static int win_chr_poll(void *opaque);
1671 static int win_chr_pipe_poll(void *opaque);
1672
1673 static void win_chr_close(CharDriverState *chr)
1674 {
1675 WinCharState *s = chr->opaque;
1676
1677 if (s->hsend) {
1678 CloseHandle(s->hsend);
1679 s->hsend = NULL;
1680 }
1681 if (s->hrecv) {
1682 CloseHandle(s->hrecv);
1683 s->hrecv = NULL;
1684 }
1685 if (s->hcom) {
1686 CloseHandle(s->hcom);
1687 s->hcom = NULL;
1688 }
1689 if (s->fpipe)
1690 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1691 else
1692 qemu_del_polling_cb(win_chr_poll, chr);
1693
1694 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1695 }
1696
1697 static int win_chr_init(CharDriverState *chr, const char *filename)
1698 {
1699 WinCharState *s = chr->opaque;
1700 COMMCONFIG comcfg;
1701 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1702 COMSTAT comstat;
1703 DWORD size;
1704 DWORD err;
1705
1706 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1707 if (!s->hsend) {
1708 fprintf(stderr, "Failed CreateEvent\n");
1709 goto fail;
1710 }
1711 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1712 if (!s->hrecv) {
1713 fprintf(stderr, "Failed CreateEvent\n");
1714 goto fail;
1715 }
1716
1717 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1718 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1719 if (s->hcom == INVALID_HANDLE_VALUE) {
1720 fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
1721 s->hcom = NULL;
1722 goto fail;
1723 }
1724
1725 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
1726 fprintf(stderr, "Failed SetupComm\n");
1727 goto fail;
1728 }
1729
1730 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1731 size = sizeof(COMMCONFIG);
1732 GetDefaultCommConfig(filename, &comcfg, &size);
1733 comcfg.dcb.DCBlength = sizeof(DCB);
1734 CommConfigDialog(filename, NULL, &comcfg);
1735
1736 if (!SetCommState(s->hcom, &comcfg.dcb)) {
1737 fprintf(stderr, "Failed SetCommState\n");
1738 goto fail;
1739 }
1740
1741 if (!SetCommMask(s->hcom, EV_ERR)) {
1742 fprintf(stderr, "Failed SetCommMask\n");
1743 goto fail;
1744 }
1745
1746 cto.ReadIntervalTimeout = MAXDWORD;
1747 if (!SetCommTimeouts(s->hcom, &cto)) {
1748 fprintf(stderr, "Failed SetCommTimeouts\n");
1749 goto fail;
1750 }
1751
1752 if (!ClearCommError(s->hcom, &err, &comstat)) {
1753 fprintf(stderr, "Failed ClearCommError\n");
1754 goto fail;
1755 }
1756 qemu_add_polling_cb(win_chr_poll, chr);
1757 return 0;
1758
1759 fail:
1760 win_chr_close(chr);
1761 return -1;
1762 }
1763
1764 static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1765 {
1766 WinCharState *s = chr->opaque;
1767 DWORD len, ret, size, err;
1768
1769 len = len1;
1770 ZeroMemory(&s->osend, sizeof(s->osend));
1771 s->osend.hEvent = s->hsend;
1772 while (len > 0) {
1773 if (s->hsend)
1774 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1775 else
1776 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1777 if (!ret) {
1778 err = GetLastError();
1779 if (err == ERROR_IO_PENDING) {
1780 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1781 if (ret) {
1782 buf += size;
1783 len -= size;
1784 } else {
1785 break;
1786 }
1787 } else {
1788 break;
1789 }
1790 } else {
1791 buf += size;
1792 len -= size;
1793 }
1794 }
1795 return len1 - len;
1796 }
1797
1798 static int win_chr_read_poll(CharDriverState *chr)
1799 {
1800 WinCharState *s = chr->opaque;
1801
1802 s->max_size = qemu_chr_be_can_write(chr);
1803 return s->max_size;
1804 }
1805
1806 static void win_chr_readfile(CharDriverState *chr)
1807 {
1808 WinCharState *s = chr->opaque;
1809 int ret, err;
1810 uint8_t buf[READ_BUF_LEN];
1811 DWORD size;
1812
1813 ZeroMemory(&s->orecv, sizeof(s->orecv));
1814 s->orecv.hEvent = s->hrecv;
1815 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
1816 if (!ret) {
1817 err = GetLastError();
1818 if (err == ERROR_IO_PENDING) {
1819 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
1820 }
1821 }
1822
1823 if (size > 0) {
1824 qemu_chr_be_write(chr, buf, size);
1825 }
1826 }
1827
1828 static void win_chr_read(CharDriverState *chr)
1829 {
1830 WinCharState *s = chr->opaque;
1831
1832 if (s->len > s->max_size)
1833 s->len = s->max_size;
1834 if (s->len == 0)
1835 return;
1836
1837 win_chr_readfile(chr);
1838 }
1839
1840 static int win_chr_poll(void *opaque)
1841 {
1842 CharDriverState *chr = opaque;
1843 WinCharState *s = chr->opaque;
1844 COMSTAT status;
1845 DWORD comerr;
1846
1847 ClearCommError(s->hcom, &comerr, &status);
1848 if (status.cbInQue > 0) {
1849 s->len = status.cbInQue;
1850 win_chr_read_poll(chr);
1851 win_chr_read(chr);
1852 return 1;
1853 }
1854 return 0;
1855 }
1856
1857 static CharDriverState *qemu_chr_open_win_path(const char *filename)
1858 {
1859 CharDriverState *chr;
1860 WinCharState *s;
1861
1862 chr = g_malloc0(sizeof(CharDriverState));
1863 s = g_malloc0(sizeof(WinCharState));
1864 chr->opaque = s;
1865 chr->chr_write = win_chr_write;
1866 chr->chr_close = win_chr_close;
1867
1868 if (win_chr_init(chr, filename) < 0) {
1869 g_free(s);
1870 g_free(chr);
1871 return NULL;
1872 }
1873 qemu_chr_be_generic_open(chr);
1874 return chr;
1875 }
1876
1877 static int win_chr_pipe_poll(void *opaque)
1878 {
1879 CharDriverState *chr = opaque;
1880 WinCharState *s = chr->opaque;
1881 DWORD size;
1882
1883 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
1884 if (size > 0) {
1885 s->len = size;
1886 win_chr_read_poll(chr);
1887 win_chr_read(chr);
1888 return 1;
1889 }
1890 return 0;
1891 }
1892
1893 static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
1894 {
1895 WinCharState *s = chr->opaque;
1896 OVERLAPPED ov;
1897 int ret;
1898 DWORD size;
1899 char openname[256];
1900
1901 s->fpipe = TRUE;
1902
1903 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1904 if (!s->hsend) {
1905 fprintf(stderr, "Failed CreateEvent\n");
1906 goto fail;
1907 }
1908 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1909 if (!s->hrecv) {
1910 fprintf(stderr, "Failed CreateEvent\n");
1911 goto fail;
1912 }
1913
1914 snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
1915 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
1916 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
1917 PIPE_WAIT,
1918 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
1919 if (s->hcom == INVALID_HANDLE_VALUE) {
1920 fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
1921 s->hcom = NULL;
1922 goto fail;
1923 }
1924
1925 ZeroMemory(&ov, sizeof(ov));
1926 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
1927 ret = ConnectNamedPipe(s->hcom, &ov);
1928 if (ret) {
1929 fprintf(stderr, "Failed ConnectNamedPipe\n");
1930 goto fail;
1931 }
1932
1933 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
1934 if (!ret) {
1935 fprintf(stderr, "Failed GetOverlappedResult\n");
1936 if (ov.hEvent) {
1937 CloseHandle(ov.hEvent);
1938 ov.hEvent = NULL;
1939 }
1940 goto fail;
1941 }
1942
1943 if (ov.hEvent) {
1944 CloseHandle(ov.hEvent);
1945 ov.hEvent = NULL;
1946 }
1947 qemu_add_polling_cb(win_chr_pipe_poll, chr);
1948 return 0;
1949
1950 fail:
1951 win_chr_close(chr);
1952 return -1;
1953 }
1954
1955
1956 static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
1957 {
1958 const char *filename = opts->device;
1959 CharDriverState *chr;
1960 WinCharState *s;
1961
1962 chr = g_malloc0(sizeof(CharDriverState));
1963 s = g_malloc0(sizeof(WinCharState));
1964 chr->opaque = s;
1965 chr->chr_write = win_chr_write;
1966 chr->chr_close = win_chr_close;
1967
1968 if (win_chr_pipe_init(chr, filename) < 0) {
1969 g_free(s);
1970 g_free(chr);
1971 return NULL;
1972 }
1973 qemu_chr_be_generic_open(chr);
1974 return chr;
1975 }
1976
1977 static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
1978 {
1979 CharDriverState *chr;
1980 WinCharState *s;
1981
1982 chr = g_malloc0(sizeof(CharDriverState));
1983 s = g_malloc0(sizeof(WinCharState));
1984 s->hcom = fd_out;
1985 chr->opaque = s;
1986 chr->chr_write = win_chr_write;
1987 qemu_chr_be_generic_open(chr);
1988 return chr;
1989 }
1990
1991 static CharDriverState *qemu_chr_open_win_con(void)
1992 {
1993 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
1994 }
1995
1996 static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
1997 {
1998 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
1999 DWORD dwSize;
2000 int len1;
2001
2002 len1 = len;
2003
2004 while (len1 > 0) {
2005 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
2006 break;
2007 }
2008 buf += dwSize;
2009 len1 -= dwSize;
2010 }
2011
2012 return len - len1;
2013 }
2014
2015 static void win_stdio_wait_func(void *opaque)
2016 {
2017 CharDriverState *chr = opaque;
2018 WinStdioCharState *stdio = chr->opaque;
2019 INPUT_RECORD buf[4];
2020 int ret;
2021 DWORD dwSize;
2022 int i;
2023
2024 ret = ReadConsoleInput(stdio->hStdIn, buf, sizeof(buf) / sizeof(*buf),
2025 &dwSize);
2026
2027 if (!ret) {
2028 /* Avoid error storm */
2029 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2030 return;
2031 }
2032
2033 for (i = 0; i < dwSize; i++) {
2034 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
2035
2036 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
2037 int j;
2038 if (kev->uChar.AsciiChar != 0) {
2039 for (j = 0; j < kev->wRepeatCount; j++) {
2040 if (qemu_chr_be_can_write(chr)) {
2041 uint8_t c = kev->uChar.AsciiChar;
2042 qemu_chr_be_write(chr, &c, 1);
2043 }
2044 }
2045 }
2046 }
2047 }
2048 }
2049
2050 static DWORD WINAPI win_stdio_thread(LPVOID param)
2051 {
2052 CharDriverState *chr = param;
2053 WinStdioCharState *stdio = chr->opaque;
2054 int ret;
2055 DWORD dwSize;
2056
2057 while (1) {
2058
2059 /* Wait for one byte */
2060 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
2061
2062 /* Exit in case of error, continue if nothing read */
2063 if (!ret) {
2064 break;
2065 }
2066 if (!dwSize) {
2067 continue;
2068 }
2069
2070 /* Some terminal emulator returns \r\n for Enter, just pass \n */
2071 if (stdio->win_stdio_buf == '\r') {
2072 continue;
2073 }
2074
2075 /* Signal the main thread and wait until the byte was eaten */
2076 if (!SetEvent(stdio->hInputReadyEvent)) {
2077 break;
2078 }
2079 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
2080 != WAIT_OBJECT_0) {
2081 break;
2082 }
2083 }
2084
2085 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2086 return 0;
2087 }
2088
2089 static void win_stdio_thread_wait_func(void *opaque)
2090 {
2091 CharDriverState *chr = opaque;
2092 WinStdioCharState *stdio = chr->opaque;
2093
2094 if (qemu_chr_be_can_write(chr)) {
2095 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
2096 }
2097
2098 SetEvent(stdio->hInputDoneEvent);
2099 }
2100
2101 static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
2102 {
2103 WinStdioCharState *stdio = chr->opaque;
2104 DWORD dwMode = 0;
2105
2106 GetConsoleMode(stdio->hStdIn, &dwMode);
2107
2108 if (echo) {
2109 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
2110 } else {
2111 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
2112 }
2113 }
2114
2115 static void win_stdio_close(CharDriverState *chr)
2116 {
2117 WinStdioCharState *stdio = chr->opaque;
2118
2119 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
2120 CloseHandle(stdio->hInputReadyEvent);
2121 }
2122 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
2123 CloseHandle(stdio->hInputDoneEvent);
2124 }
2125 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
2126 TerminateThread(stdio->hInputThread, 0);
2127 }
2128
2129 g_free(chr->opaque);
2130 g_free(chr);
2131 }
2132
2133 static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
2134 {
2135 CharDriverState *chr;
2136 WinStdioCharState *stdio;
2137 DWORD dwMode;
2138 int is_console = 0;
2139
2140 chr = g_malloc0(sizeof(CharDriverState));
2141 stdio = g_malloc0(sizeof(WinStdioCharState));
2142
2143 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
2144 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
2145 fprintf(stderr, "cannot open stdio: invalid handle\n");
2146 exit(1);
2147 }
2148
2149 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
2150
2151 chr->opaque = stdio;
2152 chr->chr_write = win_stdio_write;
2153 chr->chr_close = win_stdio_close;
2154
2155 if (is_console) {
2156 if (qemu_add_wait_object(stdio->hStdIn,
2157 win_stdio_wait_func, chr)) {
2158 fprintf(stderr, "qemu_add_wait_object: failed\n");
2159 }
2160 } else {
2161 DWORD dwId;
2162
2163 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2164 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2165 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
2166 chr, 0, &dwId);
2167
2168 if (stdio->hInputThread == INVALID_HANDLE_VALUE
2169 || stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
2170 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
2171 fprintf(stderr, "cannot create stdio thread or event\n");
2172 exit(1);
2173 }
2174 if (qemu_add_wait_object(stdio->hInputReadyEvent,
2175 win_stdio_thread_wait_func, chr)) {
2176 fprintf(stderr, "qemu_add_wait_object: failed\n");
2177 }
2178 }
2179
2180 dwMode |= ENABLE_LINE_INPUT;
2181
2182 if (is_console) {
2183 /* set the terminal in raw mode */
2184 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2185 dwMode |= ENABLE_PROCESSED_INPUT;
2186 }
2187
2188 SetConsoleMode(stdio->hStdIn, dwMode);
2189
2190 chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
2191 qemu_chr_fe_set_echo(chr, false);
2192
2193 return chr;
2194 }
2195 #endif /* !_WIN32 */
2196
2197
2198 /***********************************************************/
2199 /* UDP Net console */
2200
2201 typedef struct {
2202 int fd;
2203 GIOChannel *chan;
2204 guint tag;
2205 uint8_t buf[READ_BUF_LEN];
2206 int bufcnt;
2207 int bufptr;
2208 int max_size;
2209 } NetCharDriver;
2210
2211 static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2212 {
2213 NetCharDriver *s = chr->opaque;
2214 gsize bytes_written;
2215 GIOStatus status;
2216
2217 status = g_io_channel_write_chars(s->chan, (const gchar *)buf, len, &bytes_written, NULL);
2218 if (status == G_IO_STATUS_EOF) {
2219 return 0;
2220 } else if (status != G_IO_STATUS_NORMAL) {
2221 return -1;
2222 }
2223
2224 return bytes_written;
2225 }
2226
2227 static int udp_chr_read_poll(void *opaque)
2228 {
2229 CharDriverState *chr = opaque;
2230 NetCharDriver *s = chr->opaque;
2231
2232 s->max_size = qemu_chr_be_can_write(chr);
2233
2234 /* If there were any stray characters in the queue process them
2235 * first
2236 */
2237 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
2238 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
2239 s->bufptr++;
2240 s->max_size = qemu_chr_be_can_write(chr);
2241 }
2242 return s->max_size;
2243 }
2244
2245 static gboolean udp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
2246 {
2247 CharDriverState *chr = opaque;
2248 NetCharDriver *s = chr->opaque;
2249 gsize bytes_read = 0;
2250 GIOStatus status;
2251
2252 if (s->max_size == 0)
2253 return FALSE;
2254 status = g_io_channel_read_chars(s->chan, (gchar *)s->buf, sizeof(s->buf),
2255 &bytes_read, NULL);
2256 s->bufcnt = bytes_read;
2257 s->bufptr = s->bufcnt;
2258 if (status != G_IO_STATUS_NORMAL) {
2259 return FALSE;
2260 }
2261
2262 s->bufptr = 0;
2263 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
2264 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
2265 s->bufptr++;
2266 s->max_size = qemu_chr_be_can_write(chr);
2267 }
2268
2269 return TRUE;
2270 }
2271
2272 static void udp_chr_update_read_handler(CharDriverState *chr)
2273 {
2274 NetCharDriver *s = chr->opaque;
2275
2276 if (s->tag) {
2277 g_source_remove(s->tag);
2278 s->tag = 0;
2279 }
2280
2281 if (s->chan) {
2282 s->tag = io_add_watch_poll(s->chan, udp_chr_read_poll, udp_chr_read, chr);
2283 }
2284 }
2285
2286 static void udp_chr_close(CharDriverState *chr)
2287 {
2288 NetCharDriver *s = chr->opaque;
2289 if (s->tag) {
2290 g_source_remove(s->tag);
2291 }
2292 if (s->chan) {
2293 g_io_channel_unref(s->chan);
2294 closesocket(s->fd);
2295 }
2296 g_free(s);
2297 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2298 }
2299
2300 static CharDriverState *qemu_chr_open_udp_fd(int fd)
2301 {
2302 CharDriverState *chr = NULL;
2303 NetCharDriver *s = NULL;
2304
2305 chr = g_malloc0(sizeof(CharDriverState));
2306 s = g_malloc0(sizeof(NetCharDriver));
2307
2308 s->fd = fd;
2309 s->chan = io_channel_from_socket(s->fd);
2310 s->bufcnt = 0;
2311 s->bufptr = 0;
2312 chr->opaque = s;
2313 chr->chr_write = udp_chr_write;
2314 chr->chr_update_read_handler = udp_chr_update_read_handler;
2315 chr->chr_close = udp_chr_close;
2316 return chr;
2317 }
2318
2319 static CharDriverState *qemu_chr_open_udp(QemuOpts *opts)
2320 {
2321 Error *local_err = NULL;
2322 int fd = -1;
2323
2324 fd = inet_dgram_opts(opts, &local_err);
2325 if (fd < 0) {
2326 return NULL;
2327 }
2328 return qemu_chr_open_udp_fd(fd);
2329 }
2330
2331 /***********************************************************/
2332 /* TCP Net console */
2333
2334 typedef struct {
2335
2336 GIOChannel *chan, *listen_chan;
2337 guint tag, listen_tag;
2338 int fd, listen_fd;
2339 int connected;
2340 int max_size;
2341 int do_telnetopt;
2342 int do_nodelay;
2343 int is_unix;
2344 int msgfd;
2345 } TCPCharDriver;
2346
2347 static gboolean tcp_chr_accept(GIOChannel *chan, GIOCondition cond, void *opaque);
2348
2349 static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2350 {
2351 TCPCharDriver *s = chr->opaque;
2352 if (s->connected) {
2353 return io_channel_send_all(s->chan, buf, len);
2354 } else {
2355 /* XXX: indicate an error ? */
2356 return len;
2357 }
2358 }
2359
2360 static int tcp_chr_read_poll(void *opaque)
2361 {
2362 CharDriverState *chr = opaque;
2363 TCPCharDriver *s = chr->opaque;
2364 if (!s->connected)
2365 return 0;
2366 s->max_size = qemu_chr_be_can_write(chr);
2367 return s->max_size;
2368 }
2369
2370 #define IAC 255
2371 #define IAC_BREAK 243
2372 static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
2373 TCPCharDriver *s,
2374 uint8_t *buf, int *size)
2375 {
2376 /* Handle any telnet client's basic IAC options to satisfy char by
2377 * char mode with no echo. All IAC options will be removed from
2378 * the buf and the do_telnetopt variable will be used to track the
2379 * state of the width of the IAC information.
2380 *
2381 * IAC commands come in sets of 3 bytes with the exception of the
2382 * "IAC BREAK" command and the double IAC.
2383 */
2384
2385 int i;
2386 int j = 0;
2387
2388 for (i = 0; i < *size; i++) {
2389 if (s->do_telnetopt > 1) {
2390 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2391 /* Double IAC means send an IAC */
2392 if (j != i)
2393 buf[j] = buf[i];
2394 j++;
2395 s->do_telnetopt = 1;
2396 } else {
2397 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2398 /* Handle IAC break commands by sending a serial break */
2399 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
2400 s->do_telnetopt++;
2401 }
2402 s->do_telnetopt++;
2403 }
2404 if (s->do_telnetopt >= 4) {
2405 s->do_telnetopt = 1;
2406 }
2407 } else {
2408 if ((unsigned char)buf[i] == IAC) {
2409 s->do_telnetopt = 2;
2410 } else {
2411 if (j != i)
2412 buf[j] = buf[i];
2413 j++;
2414 }
2415 }
2416 }
2417 *size = j;
2418 }
2419
2420 static int tcp_get_msgfd(CharDriverState *chr)
2421 {
2422 TCPCharDriver *s = chr->opaque;
2423 int fd = s->msgfd;
2424 s->msgfd = -1;
2425 return fd;
2426 }
2427
2428 #ifndef _WIN32
2429 static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
2430 {
2431 TCPCharDriver *s = chr->opaque;
2432 struct cmsghdr *cmsg;
2433
2434 for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
2435 int fd;
2436
2437 if (cmsg->cmsg_len != CMSG_LEN(sizeof(int)) ||
2438 cmsg->cmsg_level != SOL_SOCKET ||
2439 cmsg->cmsg_type != SCM_RIGHTS)
2440 continue;
2441
2442 fd = *((int *)CMSG_DATA(cmsg));
2443 if (fd < 0)
2444 continue;
2445
2446 #ifndef MSG_CMSG_CLOEXEC
2447 qemu_set_cloexec(fd);
2448 #endif
2449 if (s->msgfd != -1)
2450 close(s->msgfd);
2451 s->msgfd = fd;
2452 }
2453 }
2454
2455 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2456 {
2457 TCPCharDriver *s = chr->opaque;
2458 struct msghdr msg = { NULL, };
2459 struct iovec iov[1];
2460 union {
2461 struct cmsghdr cmsg;
2462 char control[CMSG_SPACE(sizeof(int))];
2463 } msg_control;
2464 int flags = 0;
2465 ssize_t ret;
2466
2467 iov[0].iov_base = buf;
2468 iov[0].iov_len = len;
2469
2470 msg.msg_iov = iov;
2471 msg.msg_iovlen = 1;
2472 msg.msg_control = &msg_control;
2473 msg.msg_controllen = sizeof(msg_control);
2474
2475 #ifdef MSG_CMSG_CLOEXEC
2476 flags |= MSG_CMSG_CLOEXEC;
2477 #endif
2478 ret = recvmsg(s->fd, &msg, flags);
2479 if (ret > 0 && s->is_unix) {
2480 unix_process_msgfd(chr, &msg);
2481 }
2482
2483 return ret;
2484 }
2485 #else
2486 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2487 {
2488 TCPCharDriver *s = chr->opaque;
2489 return qemu_recv(s->fd, buf, len, 0);
2490 }
2491 #endif
2492
2493 static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
2494 {
2495 TCPCharDriver *s = chr->opaque;
2496 return g_io_create_watch(s->chan, cond);
2497 }
2498
2499 static gboolean tcp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
2500 {
2501 CharDriverState *chr = opaque;
2502 TCPCharDriver *s = chr->opaque;
2503 uint8_t buf[READ_BUF_LEN];
2504 int len, size;
2505
2506 if (!s->connected || s->max_size <= 0) {
2507 return FALSE;
2508 }
2509 len = sizeof(buf);
2510 if (len > s->max_size)
2511 len = s->max_size;
2512 size = tcp_chr_recv(chr, (void *)buf, len);
2513 if (size == 0) {
2514 /* connection closed */
2515 s->connected = 0;
2516 if (s->listen_chan) {
2517 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr);
2518 }
2519 g_source_remove(s->tag);
2520 s->tag = 0;
2521 g_io_channel_unref(s->chan);
2522 s->chan = NULL;
2523 closesocket(s->fd);
2524 s->fd = -1;
2525 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2526 } else if (size > 0) {
2527 if (s->do_telnetopt)
2528 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2529 if (size > 0)
2530 qemu_chr_be_write(chr, buf, size);
2531 }
2532
2533 return TRUE;
2534 }
2535
2536 #ifndef _WIN32
2537 CharDriverState *qemu_chr_open_eventfd(int eventfd)
2538 {
2539 return qemu_chr_open_fd(eventfd, eventfd);
2540 }
2541 #endif
2542
2543 static void tcp_chr_connect(void *opaque)
2544 {
2545 CharDriverState *chr = opaque;
2546 TCPCharDriver *s = chr->opaque;
2547
2548 s->connected = 1;
2549 if (s->chan) {
2550 s->tag = io_add_watch_poll(s->chan, tcp_chr_read_poll, tcp_chr_read, chr);
2551 }
2552 qemu_chr_be_generic_open(chr);
2553 }
2554
2555 #define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
2556 static void tcp_chr_telnet_init(int fd)
2557 {
2558 char buf[3];
2559 /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
2560 IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2561 send(fd, (char *)buf, 3, 0);
2562 IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2563 send(fd, (char *)buf, 3, 0);
2564 IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2565 send(fd, (char *)buf, 3, 0);
2566 IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2567 send(fd, (char *)buf, 3, 0);
2568 }
2569
2570 static int tcp_chr_add_client(CharDriverState *chr, int fd)
2571 {
2572 TCPCharDriver *s = chr->opaque;
2573 if (s->fd != -1)
2574 return -1;
2575
2576 socket_set_nonblock(fd);
2577 if (s->do_nodelay)
2578 socket_set_nodelay(fd);
2579 s->fd = fd;
2580 s->chan = io_channel_from_socket(fd);
2581 g_source_remove(s->listen_tag);
2582 s->listen_tag = 0;
2583 tcp_chr_connect(chr);
2584
2585 return 0;
2586 }
2587
2588 static gboolean tcp_chr_accept(GIOChannel *channel, GIOCondition cond, void *opaque)
2589 {
2590 CharDriverState *chr = opaque;
2591 TCPCharDriver *s = chr->opaque;
2592 struct sockaddr_in saddr;
2593 #ifndef _WIN32
2594 struct sockaddr_un uaddr;
2595 #endif
2596 struct sockaddr *addr;
2597 socklen_t len;
2598 int fd;
2599
2600 for(;;) {
2601 #ifndef _WIN32
2602 if (s->is_unix) {
2603 len = sizeof(uaddr);
2604 addr = (struct sockaddr *)&uaddr;
2605 } else
2606 #endif
2607 {
2608 len = sizeof(saddr);
2609 addr = (struct sockaddr *)&saddr;
2610 }
2611 fd = qemu_accept(s->listen_fd, addr, &len);
2612 if (fd < 0 && errno != EINTR) {
2613 return FALSE;
2614 } else if (fd >= 0) {
2615 if (s->do_telnetopt)
2616 tcp_chr_telnet_init(fd);
2617 break;
2618 }
2619 }
2620 if (tcp_chr_add_client(chr, fd) < 0)
2621 close(fd);
2622
2623 return TRUE;
2624 }
2625
2626 static void tcp_chr_close(CharDriverState *chr)
2627 {
2628 TCPCharDriver *s = chr->opaque;
2629 if (s->fd >= 0) {
2630 if (s->tag) {
2631 g_source_remove(s->tag);
2632 }
2633 if (s->chan) {
2634 g_io_channel_unref(s->chan);
2635 }
2636 closesocket(s->fd);
2637 }
2638 if (s->listen_fd >= 0) {
2639 if (s->listen_tag) {
2640 g_source_remove(s->listen_tag);
2641 }
2642 if (s->listen_chan) {
2643 g_io_channel_unref(s->listen_chan);
2644 }
2645 closesocket(s->listen_fd);
2646 }
2647 g_free(s);
2648 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2649 }
2650
2651 static CharDriverState *qemu_chr_open_socket_fd(int fd, bool do_nodelay,
2652 bool is_listen, bool is_telnet,
2653 bool is_waitconnect,
2654 Error **errp)
2655 {
2656 CharDriverState *chr = NULL;
2657 TCPCharDriver *s = NULL;
2658 char host[NI_MAXHOST], serv[NI_MAXSERV];
2659 const char *left = "", *right = "";
2660 struct sockaddr_storage ss;
2661 socklen_t ss_len = sizeof(ss);
2662
2663 memset(&ss, 0, ss_len);
2664 if (getsockname(fd, (struct sockaddr *) &ss, &ss_len) != 0) {
2665 error_setg(errp, "getsockname: %s", strerror(errno));
2666 return NULL;
2667 }
2668
2669 chr = g_malloc0(sizeof(CharDriverState));
2670 s = g_malloc0(sizeof(TCPCharDriver));
2671
2672 s->connected = 0;
2673 s->fd = -1;
2674 s->listen_fd = -1;
2675 s->msgfd = -1;
2676
2677 chr->filename = g_malloc(256);
2678 switch (ss.ss_family) {
2679 #ifndef _WIN32
2680 case AF_UNIX:
2681 s->is_unix = 1;
2682 snprintf(chr->filename, 256, "unix:%s%s",
2683 ((struct sockaddr_un *)(&ss))->sun_path,
2684 is_listen ? ",server" : "");
2685 break;
2686 #endif
2687 case AF_INET6:
2688 left = "[";
2689 right = "]";
2690 /* fall through */
2691 case AF_INET:
2692 s->do_nodelay = do_nodelay;
2693 getnameinfo((struct sockaddr *) &ss, ss_len, host, sizeof(host),
2694 serv, sizeof(serv), NI_NUMERICHOST | NI_NUMERICSERV);
2695 snprintf(chr->filename, 256, "%s:%s%s%s:%s%s",
2696 is_telnet ? "telnet" : "tcp",
2697 left, host, right, serv,
2698 is_listen ? ",server" : "");
2699 break;
2700 }
2701
2702 chr->opaque = s;
2703 chr->chr_write = tcp_chr_write;
2704 chr->chr_close = tcp_chr_close;
2705 chr->get_msgfd = tcp_get_msgfd;
2706 chr->chr_add_client = tcp_chr_add_client;
2707 chr->chr_add_watch = tcp_chr_add_watch;
2708
2709 if (is_listen) {
2710 s->listen_fd = fd;
2711 s->listen_chan = io_channel_from_socket(s->listen_fd);
2712 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr);
2713 if (is_telnet) {
2714 s->do_telnetopt = 1;
2715 }
2716 } else {
2717 s->connected = 1;
2718 s->fd = fd;
2719 socket_set_nodelay(fd);
2720 s->chan = io_channel_from_socket(s->fd);
2721 tcp_chr_connect(chr);
2722 }
2723
2724 if (is_listen && is_waitconnect) {
2725 printf("QEMU waiting for connection on: %s\n",
2726 chr->filename);
2727 tcp_chr_accept(s->listen_chan, G_IO_IN, chr);
2728 socket_set_nonblock(s->listen_fd);
2729 }
2730 return chr;
2731 }
2732
2733 static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
2734 {
2735 CharDriverState *chr = NULL;
2736 Error *local_err = NULL;
2737 int fd = -1;
2738 int is_listen;
2739 int is_waitconnect;
2740 int do_nodelay;
2741 int is_unix;
2742 int is_telnet;
2743
2744 is_listen = qemu_opt_get_bool(opts, "server", 0);
2745 is_waitconnect = qemu_opt_get_bool(opts, "wait", 1);
2746 is_telnet = qemu_opt_get_bool(opts, "telnet", 0);
2747 do_nodelay = !qemu_opt_get_bool(opts, "delay", 1);
2748 is_unix = qemu_opt_get(opts, "path") != NULL;
2749 if (!is_listen)
2750 is_waitconnect = 0;
2751
2752 if (is_unix) {
2753 if (is_listen) {
2754 fd = unix_listen_opts(opts, &local_err);
2755 } else {
2756 fd = unix_connect_opts(opts, &local_err, NULL, NULL);
2757 }
2758 } else {
2759 if (is_listen) {
2760 fd = inet_listen_opts(opts, 0, &local_err);
2761 } else {
2762 fd = inet_connect_opts(opts, &local_err, NULL, NULL);
2763 }
2764 }
2765 if (fd < 0) {
2766 goto fail;
2767 }
2768
2769 if (!is_waitconnect)
2770 socket_set_nonblock(fd);
2771
2772 chr = qemu_chr_open_socket_fd(fd, do_nodelay, is_listen, is_telnet,
2773 is_waitconnect, &local_err);
2774 if (error_is_set(&local_err)) {
2775 goto fail;
2776 }
2777 return chr;
2778
2779
2780 fail:
2781 if (local_err) {
2782 qerror_report_err(local_err);
2783 error_free(local_err);
2784 }
2785 if (fd >= 0) {
2786 closesocket(fd);
2787 }
2788 if (chr) {
2789 g_free(chr->opaque);
2790 g_free(chr);
2791 }
2792 return NULL;
2793 }
2794
2795 /***********************************************************/
2796 /* Memory chardev */
2797 typedef struct {
2798 size_t outbuf_size;
2799 size_t outbuf_capacity;
2800 uint8_t *outbuf;
2801 } MemoryDriver;
2802
2803 static int mem_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2804 {
2805 MemoryDriver *d = chr->opaque;
2806
2807 /* TODO: the QString implementation has the same code, we should
2808 * introduce a generic way to do this in cutils.c */
2809 if (d->outbuf_capacity < d->outbuf_size + len) {
2810 /* grow outbuf */
2811 d->outbuf_capacity += len;
2812 d->outbuf_capacity *= 2;
2813 d->outbuf = g_realloc(d->outbuf, d->outbuf_capacity);
2814 }
2815
2816 memcpy(d->outbuf + d->outbuf_size, buf, len);
2817 d->outbuf_size += len;
2818
2819 return len;
2820 }
2821
2822 void qemu_chr_init_mem(CharDriverState *chr)
2823 {
2824 MemoryDriver *d;
2825
2826 d = g_malloc(sizeof(*d));
2827 d->outbuf_size = 0;
2828 d->outbuf_capacity = 4096;
2829 d->outbuf = g_malloc0(d->outbuf_capacity);
2830
2831 memset(chr, 0, sizeof(*chr));
2832 chr->opaque = d;
2833 chr->chr_write = mem_chr_write;
2834 }
2835
2836 QString *qemu_chr_mem_to_qs(CharDriverState *chr)
2837 {
2838 MemoryDriver *d = chr->opaque;
2839 return qstring_from_substr((char *) d->outbuf, 0, d->outbuf_size - 1);
2840 }
2841
2842 /* NOTE: this driver can not be closed with qemu_chr_delete()! */
2843 void qemu_chr_close_mem(CharDriverState *chr)
2844 {
2845 MemoryDriver *d = chr->opaque;
2846
2847 g_free(d->outbuf);
2848 g_free(chr->opaque);
2849 chr->opaque = NULL;
2850 chr->chr_write = NULL;
2851 }
2852
2853 size_t qemu_chr_mem_osize(const CharDriverState *chr)
2854 {
2855 const MemoryDriver *d = chr->opaque;
2856 return d->outbuf_size;
2857 }
2858
2859 /*********************************************************/
2860 /* Ring buffer chardev */
2861
2862 typedef struct {
2863 size_t size;
2864 size_t prod;
2865 size_t cons;
2866 uint8_t *cbuf;
2867 } RingBufCharDriver;
2868
2869 static size_t ringbuf_count(const CharDriverState *chr)
2870 {
2871 const RingBufCharDriver *d = chr->opaque;
2872
2873 return d->prod - d->cons;
2874 }
2875
2876 static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2877 {
2878 RingBufCharDriver *d = chr->opaque;
2879 int i;
2880
2881 if (!buf || (len < 0)) {
2882 return -1;
2883 }
2884
2885 for (i = 0; i < len; i++ ) {
2886 d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
2887 if (d->prod - d->cons > d->size) {
2888 d->cons = d->prod - d->size;
2889 }
2890 }
2891
2892 return 0;
2893 }
2894
2895 static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len)
2896 {
2897 RingBufCharDriver *d = chr->opaque;
2898 int i;
2899
2900 for (i = 0; i < len && d->cons != d->prod; i++) {
2901 buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
2902 }
2903
2904 return i;
2905 }
2906
2907 static void ringbuf_chr_close(struct CharDriverState *chr)
2908 {
2909 RingBufCharDriver *d = chr->opaque;
2910
2911 g_free(d->cbuf);
2912 g_free(d);
2913 chr->opaque = NULL;
2914 }
2915
2916 static CharDriverState *qemu_chr_open_ringbuf(ChardevRingbuf *opts,
2917 Error **errp)
2918 {
2919 CharDriverState *chr;
2920 RingBufCharDriver *d;
2921
2922 chr = g_malloc0(sizeof(CharDriverState));
2923 d = g_malloc(sizeof(*d));
2924
2925 d->size = opts->has_size ? opts->size : 65536;
2926
2927 /* The size must be power of 2 */
2928 if (d->size & (d->size - 1)) {
2929 error_setg(errp, "size of ringbuf chardev must be power of two");
2930 goto fail;
2931 }
2932
2933 d->prod = 0;
2934 d->cons = 0;
2935 d->cbuf = g_malloc0(d->size);
2936
2937 chr->opaque = d;
2938 chr->chr_write = ringbuf_chr_write;
2939 chr->chr_close = ringbuf_chr_close;
2940
2941 return chr;
2942
2943 fail:
2944 g_free(d);
2945 g_free(chr);
2946 return NULL;
2947 }
2948
2949 static bool chr_is_ringbuf(const CharDriverState *chr)
2950 {
2951 return chr->chr_write == ringbuf_chr_write;
2952 }
2953
2954 void qmp_ringbuf_write(const char *device, const char *data,
2955 bool has_format, enum DataFormat format,
2956 Error **errp)
2957 {
2958 CharDriverState *chr;
2959 const uint8_t *write_data;
2960 int ret;
2961 size_t write_count;
2962
2963 chr = qemu_chr_find(device);
2964 if (!chr) {
2965 error_setg(errp, "Device '%s' not found", device);
2966 return;
2967 }
2968
2969 if (!chr_is_ringbuf(chr)) {
2970 error_setg(errp,"%s is not a ringbuf device", device);
2971 return;
2972 }
2973
2974 if (has_format && (format == DATA_FORMAT_BASE64)) {
2975 write_data = g_base64_decode(data, &write_count);
2976 } else {
2977 write_data = (uint8_t *)data;
2978 write_count = strlen(data);
2979 }
2980
2981 ret = ringbuf_chr_write(chr, write_data, write_count);
2982
2983 if (write_data != (uint8_t *)data) {
2984 g_free((void *)write_data);
2985 }
2986
2987 if (ret < 0) {
2988 error_setg(errp, "Failed to write to device %s", device);
2989 return;
2990 }
2991 }
2992
2993 char *qmp_ringbuf_read(const char *device, int64_t size,
2994 bool has_format, enum DataFormat format,
2995 Error **errp)
2996 {
2997 CharDriverState *chr;
2998 uint8_t *read_data;
2999 size_t count;
3000 char *data;
3001
3002 chr = qemu_chr_find(device);
3003 if (!chr) {
3004 error_setg(errp, "Device '%s' not found", device);
3005 return NULL;
3006 }
3007
3008 if (!chr_is_ringbuf(chr)) {
3009 error_setg(errp,"%s is not a ringbuf device", device);
3010 return NULL;
3011 }
3012
3013 if (size <= 0) {
3014 error_setg(errp, "size must be greater than zero");
3015 return NULL;
3016 }
3017
3018 count = ringbuf_count(chr);
3019 size = size > count ? count : size;
3020 read_data = g_malloc(size + 1);
3021
3022 ringbuf_chr_read(chr, read_data, size);
3023
3024 if (has_format && (format == DATA_FORMAT_BASE64)) {
3025 data = g_base64_encode(read_data, size);
3026 g_free(read_data);
3027 } else {
3028 /*
3029 * FIXME should read only complete, valid UTF-8 characters up
3030 * to @size bytes. Invalid sequences should be replaced by a
3031 * suitable replacement character. Except when (and only
3032 * when) ring buffer lost characters since last read, initial
3033 * continuation characters should be dropped.
3034 */
3035 read_data[size] = 0;
3036 data = (char *)read_data;
3037 }
3038
3039 return data;
3040 }
3041
3042 QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
3043 {
3044 char host[65], port[33], width[8], height[8];
3045 int pos;
3046 const char *p;
3047 QemuOpts *opts;
3048 Error *local_err = NULL;
3049
3050 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
3051 if (error_is_set(&local_err)) {
3052 qerror_report_err(local_err);
3053 error_free(local_err);
3054 return NULL;
3055 }
3056
3057 if (strstart(filename, "mon:", &p)) {
3058 filename = p;
3059 qemu_opt_set(opts, "mux", "on");
3060 }
3061
3062 if (strcmp(filename, "null") == 0 ||
3063 strcmp(filename, "pty") == 0 ||
3064 strcmp(filename, "msmouse") == 0 ||
3065 strcmp(filename, "braille") == 0 ||
3066 strcmp(filename, "stdio") == 0) {
3067 qemu_opt_set(opts, "backend", filename);
3068 return opts;
3069 }
3070 if (strstart(filename, "vc", &p)) {
3071 qemu_opt_set(opts, "backend", "vc");
3072 if (*p == ':') {
3073 if (sscanf(p+1, "%8[0-9]x%8[0-9]", width, height) == 2) {
3074 /* pixels */
3075 qemu_opt_set(opts, "width", width);
3076 qemu_opt_set(opts, "height", height);
3077 } else if (sscanf(p+1, "%8[0-9]Cx%8[0-9]C", width, height) == 2) {
3078 /* chars */
3079 qemu_opt_set(opts, "cols", width);
3080 qemu_opt_set(opts, "rows", height);
3081 } else {
3082 goto fail;
3083 }
3084 }
3085 return opts;
3086 }
3087 if (strcmp(filename, "con:") == 0) {
3088 qemu_opt_set(opts, "backend", "console");
3089 return opts;
3090 }
3091 if (strstart(filename, "COM", NULL)) {
3092 qemu_opt_set(opts, "backend", "serial");
3093 qemu_opt_set(opts, "path", filename);
3094 return opts;
3095 }
3096 if (strstart(filename, "file:", &p)) {
3097 qemu_opt_set(opts, "backend", "file");
3098 qemu_opt_set(opts, "path", p);
3099 return opts;
3100 }
3101 if (strstart(filename, "pipe:", &p)) {
3102 qemu_opt_set(opts, "backend", "pipe");
3103 qemu_opt_set(opts, "path", p);
3104 return opts;
3105 }
3106 if (strstart(filename, "tcp:", &p) ||
3107 strstart(filename, "telnet:", &p)) {
3108 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3109 host[0] = 0;
3110 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
3111 goto fail;
3112 }
3113 qemu_opt_set(opts, "backend", "socket");
3114 qemu_opt_set(opts, "host", host);
3115 qemu_opt_set(opts, "port", port);
3116 if (p[pos] == ',') {
3117 if (qemu_opts_do_parse(opts, p+pos+1, NULL) != 0)
3118 goto fail;
3119 }
3120 if (strstart(filename, "telnet:", &p))
3121 qemu_opt_set(opts, "telnet", "on");
3122 return opts;
3123 }
3124 if (strstart(filename, "udp:", &p)) {
3125 qemu_opt_set(opts, "backend", "udp");
3126 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
3127 host[0] = 0;
3128 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
3129 goto fail;
3130 }
3131 }
3132 qemu_opt_set(opts, "host", host);
3133 qemu_opt_set(opts, "port", port);
3134 if (p[pos] == '@') {
3135 p += pos + 1;
3136 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3137 host[0] = 0;
3138 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
3139 goto fail;
3140 }
3141 }
3142 qemu_opt_set(opts, "localaddr", host);
3143 qemu_opt_set(opts, "localport", port);
3144 }
3145 return opts;
3146 }
3147 if (strstart(filename, "unix:", &p)) {
3148 qemu_opt_set(opts, "backend", "socket");
3149 if (qemu_opts_do_parse(opts, p, "path") != 0)
3150 goto fail;
3151 return opts;
3152 }
3153 if (strstart(filename, "/dev/parport", NULL) ||
3154 strstart(filename, "/dev/ppi", NULL)) {
3155 qemu_opt_set(opts, "backend", "parport");
3156 qemu_opt_set(opts, "path", filename);
3157 return opts;
3158 }
3159 if (strstart(filename, "/dev/", NULL)) {
3160 qemu_opt_set(opts, "backend", "tty");
3161 qemu_opt_set(opts, "path", filename);
3162 return opts;
3163 }
3164
3165 fail:
3166 qemu_opts_del(opts);
3167 return NULL;
3168 }
3169
3170 static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
3171 Error **errp)
3172 {
3173 const char *path = qemu_opt_get(opts, "path");
3174
3175 if (path == NULL) {
3176 error_setg(errp, "chardev: file: no filename given");
3177 return;
3178 }
3179 backend->file = g_new0(ChardevFile, 1);
3180 backend->file->out = g_strdup(path);
3181 }
3182
3183 static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
3184 Error **errp)
3185 {
3186 backend->stdio = g_new0(ChardevStdio, 1);
3187 backend->stdio->has_signal = true;
3188 backend->stdio->signal =
3189 qemu_opt_get_bool(opts, "signal", display_type != DT_NOGRAPHIC);
3190 }
3191
3192 static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
3193 Error **errp)
3194 {
3195 const char *device = qemu_opt_get(opts, "path");
3196
3197 if (device == NULL) {
3198 error_setg(errp, "chardev: serial/tty: no device path given");
3199 return;
3200 }
3201 backend->serial = g_new0(ChardevHostdev, 1);
3202 backend->serial->device = g_strdup(device);
3203 }
3204
3205 static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
3206 Error **errp)
3207 {
3208 const char *device = qemu_opt_get(opts, "path");
3209
3210 if (device == NULL) {
3211 error_setg(errp, "chardev: parallel: no device path given");
3212 return;
3213 }
3214 backend->parallel = g_new0(ChardevHostdev, 1);
3215 backend->parallel->device = g_strdup(device);
3216 }
3217
3218 static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
3219 Error **errp)
3220 {
3221 const char *device = qemu_opt_get(opts, "path");
3222
3223 if (device == NULL) {
3224 error_setg(errp, "chardev: pipe: no device path given");
3225 return;
3226 }
3227 backend->pipe = g_new0(ChardevHostdev, 1);
3228 backend->pipe->device = g_strdup(device);
3229 }
3230
3231 static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
3232 Error **errp)
3233 {
3234 int val;
3235
3236 backend->memory = g_new0(ChardevRingbuf, 1);
3237
3238 val = qemu_opt_get_number(opts, "size", 0);
3239 if (val != 0) {
3240 backend->memory->has_size = true;
3241 backend->memory->size = val;
3242 }
3243 }
3244
3245 typedef struct CharDriver {
3246 const char *name;
3247 /* old, pre qapi */
3248 CharDriverState *(*open)(QemuOpts *opts);
3249 /* new, qapi-based */
3250 int kind;
3251 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
3252 } CharDriver;
3253
3254 static GSList *backends;
3255
3256 void register_char_driver(const char *name, CharDriverState *(*open)(QemuOpts *))
3257 {
3258 CharDriver *s;
3259
3260 s = g_malloc0(sizeof(*s));
3261 s->name = g_strdup(name);
3262 s->open = open;
3263
3264 backends = g_slist_append(backends, s);
3265 }
3266
3267 void register_char_driver_qapi(const char *name, int kind,
3268 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp))
3269 {
3270 CharDriver *s;
3271
3272 s = g_malloc0(sizeof(*s));
3273 s->name = g_strdup(name);
3274 s->kind = kind;
3275 s->parse = parse;
3276
3277 backends = g_slist_append(backends, s);
3278 }
3279
3280 CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
3281 void (*init)(struct CharDriverState *s),
3282 Error **errp)
3283 {
3284 CharDriver *cd;
3285 CharDriverState *chr;
3286 GSList *i;
3287
3288 if (qemu_opts_id(opts) == NULL) {
3289 error_setg(errp, "chardev: no id specified");
3290 goto err;
3291 }
3292
3293 if (qemu_opt_get(opts, "backend") == NULL) {
3294 error_setg(errp, "chardev: \"%s\" missing backend",
3295 qemu_opts_id(opts));
3296 goto err;
3297 }
3298 for (i = backends; i; i = i->next) {
3299 cd = i->data;
3300
3301 if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) {
3302 break;
3303 }
3304 }
3305 if (i == NULL) {
3306 error_setg(errp, "chardev: backend \"%s\" not found",
3307 qemu_opt_get(opts, "backend"));
3308 return NULL;
3309 }
3310
3311 if (!cd->open) {
3312 /* using new, qapi init */
3313 ChardevBackend *backend = g_new0(ChardevBackend, 1);
3314 ChardevReturn *ret = NULL;
3315 const char *id = qemu_opts_id(opts);
3316 const char *bid = NULL;
3317
3318 if (qemu_opt_get_bool(opts, "mux", 0)) {
3319 bid = g_strdup_printf("%s-base", id);
3320 }
3321
3322 chr = NULL;
3323 backend->kind = cd->kind;
3324 if (cd->parse) {
3325 cd->parse(opts, backend, errp);
3326 if (error_is_set(errp)) {
3327 goto qapi_out;
3328 }
3329 }
3330 ret = qmp_chardev_add(bid ? bid : id, backend, errp);
3331 if (error_is_set(errp)) {
3332 goto qapi_out;
3333 }
3334
3335 if (bid) {
3336 qapi_free_ChardevBackend(backend);
3337 qapi_free_ChardevReturn(ret);
3338 backend = g_new0(ChardevBackend, 1);
3339 backend->mux = g_new0(ChardevMux, 1);
3340 backend->kind = CHARDEV_BACKEND_KIND_MUX;
3341 backend->mux->chardev = g_strdup(bid);
3342 ret = qmp_chardev_add(id, backend, errp);
3343 if (error_is_set(errp)) {
3344 goto qapi_out;
3345 }
3346 }
3347
3348 chr = qemu_chr_find(id);
3349
3350 qapi_out:
3351 qapi_free_ChardevBackend(backend);
3352 qapi_free_ChardevReturn(ret);
3353 return chr;
3354 }
3355
3356 chr = cd->open(opts);
3357 if (!chr) {
3358 error_setg(errp, "chardev: opening backend \"%s\" failed",
3359 qemu_opt_get(opts, "backend"));
3360 goto err;
3361 }
3362
3363 if (!chr->filename)
3364 chr->filename = g_strdup(qemu_opt_get(opts, "backend"));
3365 chr->init = init;
3366 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3367
3368 if (qemu_opt_get_bool(opts, "mux", 0)) {
3369 CharDriverState *base = chr;
3370 int len = strlen(qemu_opts_id(opts)) + 6;
3371 base->label = g_malloc(len);
3372 snprintf(base->label, len, "%s-base", qemu_opts_id(opts));
3373 chr = qemu_chr_open_mux(base);
3374 chr->filename = base->filename;
3375 chr->avail_connections = MAX_MUX;
3376 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3377 } else {
3378 chr->avail_connections = 1;
3379 }
3380 chr->label = g_strdup(qemu_opts_id(opts));
3381 chr->opts = opts;
3382 return chr;
3383
3384 err:
3385 qemu_opts_del(opts);
3386 return NULL;
3387 }
3388
3389 CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
3390 {
3391 const char *p;
3392 CharDriverState *chr;
3393 QemuOpts *opts;
3394 Error *err = NULL;
3395
3396 if (strstart(filename, "chardev:", &p)) {
3397 return qemu_chr_find(p);
3398 }
3399
3400 opts = qemu_chr_parse_compat(label, filename);
3401 if (!opts)
3402 return NULL;
3403
3404 chr = qemu_chr_new_from_opts(opts, init, &err);
3405 if (error_is_set(&err)) {
3406 fprintf(stderr, "%s\n", error_get_pretty(err));
3407 error_free(err);
3408 }
3409 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
3410 monitor_init(chr, MONITOR_USE_READLINE);
3411 }
3412 return chr;
3413 }
3414
3415 void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo)
3416 {
3417 if (chr->chr_set_echo) {
3418 chr->chr_set_echo(chr, echo);
3419 }
3420 }
3421
3422 void qemu_chr_fe_set_open(struct CharDriverState *chr, int fe_open)
3423 {
3424 if (chr->fe_open == fe_open) {
3425 return;
3426 }
3427 chr->fe_open = fe_open;
3428 if (fe_open && chr->chr_guest_open) {
3429 chr->chr_guest_open(chr);
3430 }
3431 if (!fe_open && chr->chr_guest_close) {
3432 chr->chr_guest_close(chr);
3433 }
3434 }
3435
3436 int qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond,
3437 GIOFunc func, void *user_data)
3438 {
3439 GSource *src;
3440 guint tag;
3441
3442 if (s->chr_add_watch == NULL) {
3443 return -ENOSYS;
3444 }
3445
3446 src = s->chr_add_watch(s, cond);
3447 g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
3448 tag = g_source_attach(src, NULL);
3449 g_source_unref(src);
3450
3451 return tag;
3452 }
3453
3454 void qemu_chr_delete(CharDriverState *chr)
3455 {
3456 QTAILQ_REMOVE(&chardevs, chr, next);
3457 if (chr->chr_close) {
3458 chr->chr_close(chr);
3459 }
3460 g_free(chr->filename);
3461 g_free(chr->label);
3462 if (chr->opts) {
3463 qemu_opts_del(chr->opts);
3464 }
3465 g_free(chr);
3466 }
3467
3468 ChardevInfoList *qmp_query_chardev(Error **errp)
3469 {
3470 ChardevInfoList *chr_list = NULL;
3471 CharDriverState *chr;
3472
3473 QTAILQ_FOREACH(chr, &chardevs, next) {
3474 ChardevInfoList *info = g_malloc0(sizeof(*info));
3475 info->value = g_malloc0(sizeof(*info->value));
3476 info->value->label = g_strdup(chr->label);
3477 info->value->filename = g_strdup(chr->filename);
3478
3479 info->next = chr_list;
3480 chr_list = info;
3481 }
3482
3483 return chr_list;
3484 }
3485
3486 CharDriverState *qemu_chr_find(const char *name)
3487 {
3488 CharDriverState *chr;
3489
3490 QTAILQ_FOREACH(chr, &chardevs, next) {
3491 if (strcmp(chr->label, name) != 0)
3492 continue;
3493 return chr;
3494 }
3495 return NULL;
3496 }
3497
3498 /* Get a character (serial) device interface. */
3499 CharDriverState *qemu_char_get_next_serial(void)
3500 {
3501 static int next_serial;
3502
3503 /* FIXME: This function needs to go away: use chardev properties! */
3504 return serial_hds[next_serial++];
3505 }
3506
3507 QemuOptsList qemu_chardev_opts = {
3508 .name = "chardev",
3509 .implied_opt_name = "backend",
3510 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
3511 .desc = {
3512 {
3513 .name = "backend",
3514 .type = QEMU_OPT_STRING,
3515 },{
3516 .name = "path",
3517 .type = QEMU_OPT_STRING,
3518 },{
3519 .name = "host",
3520 .type = QEMU_OPT_STRING,
3521 },{
3522 .name = "port",
3523 .type = QEMU_OPT_STRING,
3524 },{
3525 .name = "localaddr",
3526 .type = QEMU_OPT_STRING,
3527 },{
3528 .name = "localport",
3529 .type = QEMU_OPT_STRING,
3530 },{
3531 .name = "to",
3532 .type = QEMU_OPT_NUMBER,
3533 },{
3534 .name = "ipv4",
3535 .type = QEMU_OPT_BOOL,
3536 },{
3537 .name = "ipv6",
3538 .type = QEMU_OPT_BOOL,
3539 },{
3540 .name = "wait",
3541 .type = QEMU_OPT_BOOL,
3542 },{
3543 .name = "server",
3544 .type = QEMU_OPT_BOOL,
3545 },{
3546 .name = "delay",
3547 .type = QEMU_OPT_BOOL,
3548 },{
3549 .name = "telnet",
3550 .type = QEMU_OPT_BOOL,
3551 },{
3552 .name = "width",
3553 .type = QEMU_OPT_NUMBER,
3554 },{
3555 .name = "height",
3556 .type = QEMU_OPT_NUMBER,
3557 },{
3558 .name = "cols",
3559 .type = QEMU_OPT_NUMBER,
3560 },{
3561 .name = "rows",
3562 .type = QEMU_OPT_NUMBER,
3563 },{
3564 .name = "mux",
3565 .type = QEMU_OPT_BOOL,
3566 },{
3567 .name = "signal",
3568 .type = QEMU_OPT_BOOL,
3569 },{
3570 .name = "name",
3571 .type = QEMU_OPT_STRING,
3572 },{
3573 .name = "debug",
3574 .type = QEMU_OPT_NUMBER,
3575 },{
3576 .name = "size",
3577 .type = QEMU_OPT_SIZE,
3578 },
3579 { /* end of list */ }
3580 },
3581 };
3582
3583 #ifdef _WIN32
3584
3585 static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
3586 {
3587 HANDLE out;
3588
3589 if (file->in) {
3590 error_setg(errp, "input file not supported");
3591 return NULL;
3592 }
3593
3594 out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
3595 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
3596 if (out == INVALID_HANDLE_VALUE) {
3597 error_setg(errp, "open %s failed", file->out);
3598 return NULL;
3599 }
3600 return qemu_chr_open_win_file(out);
3601 }
3602
3603 static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
3604 Error **errp)
3605 {
3606 return qemu_chr_open_win_path(serial->device);
3607 }
3608
3609 static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
3610 Error **errp)
3611 {
3612 error_setg(errp, "character device backend type 'parallel' not supported");
3613 return NULL;
3614 }
3615
3616 #else /* WIN32 */
3617
3618 static int qmp_chardev_open_file_source(char *src, int flags,
3619 Error **errp)
3620 {
3621 int fd = -1;
3622
3623 TFR(fd = qemu_open(src, flags, 0666));
3624 if (fd == -1) {
3625 error_setg(errp, "open %s: %s", src, strerror(errno));
3626 }
3627 return fd;
3628 }
3629
3630 static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
3631 {
3632 int flags, in = -1, out = -1;
3633
3634 flags = O_WRONLY | O_TRUNC | O_CREAT | O_BINARY;
3635 out = qmp_chardev_open_file_source(file->out, flags, errp);
3636 if (error_is_set(errp)) {
3637 return NULL;
3638 }
3639
3640 if (file->in) {
3641 flags = O_RDONLY;
3642 in = qmp_chardev_open_file_source(file->in, flags, errp);
3643 if (error_is_set(errp)) {
3644 qemu_close(out);
3645 return NULL;
3646 }
3647 }
3648
3649 return qemu_chr_open_fd(in, out);
3650 }
3651
3652 static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
3653 Error **errp)
3654 {
3655 #ifdef HAVE_CHARDEV_TTY
3656 int fd;
3657
3658 fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
3659 if (error_is_set(errp)) {
3660 return NULL;
3661 }
3662 socket_set_nonblock(fd);
3663 return qemu_chr_open_tty_fd(fd);
3664 #else
3665 error_setg(errp, "character device backend type 'serial' not supported");
3666 return NULL;
3667 #endif
3668 }
3669
3670 static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
3671 Error **errp)
3672 {
3673 #ifdef HAVE_CHARDEV_PARPORT
3674 int fd;
3675
3676 fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
3677 if (error_is_set(errp)) {
3678 return NULL;
3679 }
3680 return qemu_chr_open_pp_fd(fd);
3681 #else
3682 error_setg(errp, "character device backend type 'parallel' not supported");
3683 return NULL;
3684 #endif
3685 }
3686
3687 #endif /* WIN32 */
3688
3689 static CharDriverState *qmp_chardev_open_socket(ChardevSocket *sock,
3690 Error **errp)
3691 {
3692 SocketAddress *addr = sock->addr;
3693 bool do_nodelay = sock->has_nodelay ? sock->nodelay : false;
3694 bool is_listen = sock->has_server ? sock->server : true;
3695 bool is_telnet = sock->has_telnet ? sock->telnet : false;
3696 bool is_waitconnect = sock->has_wait ? sock->wait : false;
3697 int fd;
3698
3699 if (is_listen) {
3700 fd = socket_listen(addr, errp);
3701 } else {
3702 fd = socket_connect(addr, errp, NULL, NULL);
3703 }
3704 if (error_is_set(errp)) {
3705 return NULL;
3706 }
3707 return qemu_chr_open_socket_fd(fd, do_nodelay, is_listen,
3708 is_telnet, is_waitconnect, errp);
3709 }
3710
3711 static CharDriverState *qmp_chardev_open_dgram(ChardevDgram *dgram,
3712 Error **errp)
3713 {
3714 int fd;
3715
3716 fd = socket_dgram(dgram->remote, dgram->local, errp);
3717 if (error_is_set(errp)) {
3718 return NULL;
3719 }
3720 return qemu_chr_open_udp_fd(fd);
3721 }
3722
3723 ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
3724 Error **errp)
3725 {
3726 ChardevReturn *ret = g_new0(ChardevReturn, 1);
3727 CharDriverState *base, *chr = NULL;
3728
3729 chr = qemu_chr_find(id);
3730 if (chr) {
3731 error_setg(errp, "Chardev '%s' already exists", id);
3732 g_free(ret);
3733 return NULL;
3734 }
3735
3736 switch (backend->kind) {
3737 case CHARDEV_BACKEND_KIND_FILE:
3738 chr = qmp_chardev_open_file(backend->file, errp);
3739 break;
3740 case CHARDEV_BACKEND_KIND_SERIAL:
3741 chr = qmp_chardev_open_serial(backend->serial, errp);
3742 break;
3743 case CHARDEV_BACKEND_KIND_PARALLEL:
3744 chr = qmp_chardev_open_parallel(backend->parallel, errp);
3745 break;
3746 case CHARDEV_BACKEND_KIND_PIPE:
3747 chr = qemu_chr_open_pipe(backend->pipe);
3748 break;
3749 case CHARDEV_BACKEND_KIND_SOCKET:
3750 chr = qmp_chardev_open_socket(backend->socket, errp);
3751 break;
3752 case CHARDEV_BACKEND_KIND_DGRAM:
3753 chr = qmp_chardev_open_dgram(backend->dgram, errp);
3754 break;
3755 #ifdef HAVE_CHARDEV_TTY
3756 case CHARDEV_BACKEND_KIND_PTY:
3757 chr = qemu_chr_open_pty(id, ret);
3758 break;
3759 #endif
3760 case CHARDEV_BACKEND_KIND_NULL:
3761 chr = qemu_chr_open_null();
3762 break;
3763 case CHARDEV_BACKEND_KIND_MUX:
3764 base = qemu_chr_find(backend->mux->chardev);
3765 if (base == NULL) {
3766 error_setg(errp, "mux: base chardev %s not found",
3767 backend->mux->chardev);
3768 break;
3769 }
3770 chr = qemu_chr_open_mux(base);
3771 break;
3772 case CHARDEV_BACKEND_KIND_MSMOUSE:
3773 chr = qemu_chr_open_msmouse();
3774 break;
3775 #ifdef CONFIG_BRLAPI
3776 case CHARDEV_BACKEND_KIND_BRAILLE:
3777 chr = chr_baum_init();
3778 break;
3779 #endif
3780 case CHARDEV_BACKEND_KIND_STDIO:
3781 chr = qemu_chr_open_stdio(backend->stdio);
3782 break;
3783 #ifdef _WIN32
3784 case CHARDEV_BACKEND_KIND_CONSOLE:
3785 chr = qemu_chr_open_win_con();
3786 break;
3787 #endif
3788 #ifdef CONFIG_SPICE
3789 case CHARDEV_BACKEND_KIND_SPICEVMC:
3790 chr = qemu_chr_open_spice_vmc(backend->spicevmc->type);
3791 break;
3792 case CHARDEV_BACKEND_KIND_SPICEPORT:
3793 chr = qemu_chr_open_spice_port(backend->spiceport->fqdn);
3794 break;
3795 #endif
3796 case CHARDEV_BACKEND_KIND_VC:
3797 chr = vc_init(backend->vc);
3798 break;
3799 case CHARDEV_BACKEND_KIND_MEMORY:
3800 chr = qemu_chr_open_ringbuf(backend->memory, errp);
3801 break;
3802 default:
3803 error_setg(errp, "unknown chardev backend (%d)", backend->kind);
3804 break;
3805 }
3806
3807 if (chr == NULL && !error_is_set(errp)) {
3808 error_setg(errp, "Failed to create chardev");
3809 }
3810 if (chr) {
3811 chr->label = g_strdup(id);
3812 chr->avail_connections =
3813 (backend->kind == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1;
3814 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3815 return ret;
3816 } else {
3817 g_free(ret);
3818 return NULL;
3819 }
3820 }
3821
3822 void qmp_chardev_remove(const char *id, Error **errp)
3823 {
3824 CharDriverState *chr;
3825
3826 chr = qemu_chr_find(id);
3827 if (NULL == chr) {
3828 error_setg(errp, "Chardev '%s' not found", id);
3829 return;
3830 }
3831 if (chr->chr_can_read || chr->chr_read ||
3832 chr->chr_event || chr->handler_opaque) {
3833 error_setg(errp, "Chardev '%s' is busy", id);
3834 return;
3835 }
3836 qemu_chr_delete(chr);
3837 }
3838
3839 static void register_types(void)
3840 {
3841 register_char_driver_qapi("null", CHARDEV_BACKEND_KIND_NULL, NULL);
3842 register_char_driver("socket", qemu_chr_open_socket);
3843 register_char_driver("udp", qemu_chr_open_udp);
3844 register_char_driver_qapi("memory", CHARDEV_BACKEND_KIND_MEMORY,
3845 qemu_chr_parse_ringbuf);
3846 register_char_driver_qapi("file", CHARDEV_BACKEND_KIND_FILE,
3847 qemu_chr_parse_file_out);
3848 register_char_driver_qapi("stdio", CHARDEV_BACKEND_KIND_STDIO,
3849 qemu_chr_parse_stdio);
3850 register_char_driver_qapi("serial", CHARDEV_BACKEND_KIND_SERIAL,
3851 qemu_chr_parse_serial);
3852 register_char_driver_qapi("tty", CHARDEV_BACKEND_KIND_SERIAL,
3853 qemu_chr_parse_serial);
3854 register_char_driver_qapi("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
3855 qemu_chr_parse_parallel);
3856 register_char_driver_qapi("parport", CHARDEV_BACKEND_KIND_PARALLEL,
3857 qemu_chr_parse_parallel);
3858 register_char_driver_qapi("pty", CHARDEV_BACKEND_KIND_PTY, NULL);
3859 register_char_driver_qapi("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL);
3860 register_char_driver_qapi("pipe", CHARDEV_BACKEND_KIND_PIPE,
3861 qemu_chr_parse_pipe);
3862 }
3863
3864 type_init(register_types);
Qemu copy for testing