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qemu-char: Add fe_open tracking
[qemu/ar7.git] / qemu-char.c
blobc9890ad20f763706fc1825a117f3b7ca28ecd9da
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 if (!opaque && !fd_can_read && !fd_read && !fd_event) {
225 /* chr driver being released. */
226 ++s->avail_connections;
227 }
228 s->chr_can_read = fd_can_read;
229 s->chr_read = fd_read;
230 s->chr_event = fd_event;
231 s->handler_opaque = opaque;
232 if (s->chr_update_read_handler)
233 s->chr_update_read_handler(s);
234
235 /* We're connecting to an already opened device, so let's make sure we
236 also get the open event */
237 if (s->be_open) {
238 qemu_chr_be_generic_open(s);
239 }
240 }
241
242 static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
243 {
244 return len;
245 }
246
247 static CharDriverState *qemu_chr_open_null(void)
248 {
249 CharDriverState *chr;
250
251 chr = g_malloc0(sizeof(CharDriverState));
252 chr->chr_write = null_chr_write;
253 return chr;
254 }
255
256 /* MUX driver for serial I/O splitting */
257 #define MAX_MUX 4
258 #define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
259 #define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
260 typedef struct {
261 IOCanReadHandler *chr_can_read[MAX_MUX];
262 IOReadHandler *chr_read[MAX_MUX];
263 IOEventHandler *chr_event[MAX_MUX];
264 void *ext_opaque[MAX_MUX];
265 CharDriverState *drv;
266 int focus;
267 int mux_cnt;
268 int term_got_escape;
269 int max_size;
270 /* Intermediate input buffer allows to catch escape sequences even if the
271 currently active device is not accepting any input - but only until it
272 is full as well. */
273 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
274 int prod[MAX_MUX];
275 int cons[MAX_MUX];
276 int timestamps;
277 int linestart;
278 int64_t timestamps_start;
279 } MuxDriver;
280
281
282 static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
283 {
284 MuxDriver *d = chr->opaque;
285 int ret;
286 if (!d->timestamps) {
287 ret = d->drv->chr_write(d->drv, buf, len);
288 } else {
289 int i;
290
291 ret = 0;
292 for (i = 0; i < len; i++) {
293 if (d->linestart) {
294 char buf1[64];
295 int64_t ti;
296 int secs;
297
298 ti = qemu_get_clock_ms(rt_clock);
299 if (d->timestamps_start == -1)
300 d->timestamps_start = ti;
301 ti -= d->timestamps_start;
302 secs = ti / 1000;
303 snprintf(buf1, sizeof(buf1),
304 "[%02d:%02d:%02d.%03d] ",
305 secs / 3600,
306 (secs / 60) % 60,
307 secs % 60,
308 (int)(ti % 1000));
309 d->drv->chr_write(d->drv, (uint8_t *)buf1, strlen(buf1));
310 d->linestart = 0;
311 }
312 ret += d->drv->chr_write(d->drv, buf+i, 1);
313 if (buf[i] == '\n') {
314 d->linestart = 1;
315 }
316 }
317 }
318 return ret;
319 }
320
321 static const char * const mux_help[] = {
322 "% h print this help\n\r",
323 "% x exit emulator\n\r",
324 "% s save disk data back to file (if -snapshot)\n\r",
325 "% t toggle console timestamps\n\r"
326 "% b send break (magic sysrq)\n\r",
327 "% c switch between console and monitor\n\r",
328 "% % sends %\n\r",
329 NULL
330 };
331
332 int term_escape_char = 0x01; /* ctrl-a is used for escape */
333 static void mux_print_help(CharDriverState *chr)
334 {
335 int i, j;
336 char ebuf[15] = "Escape-Char";
337 char cbuf[50] = "\n\r";
338
339 if (term_escape_char > 0 && term_escape_char < 26) {
340 snprintf(cbuf, sizeof(cbuf), "\n\r");
341 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
342 } else {
343 snprintf(cbuf, sizeof(cbuf),
344 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
345 term_escape_char);
346 }
347 chr->chr_write(chr, (uint8_t *)cbuf, strlen(cbuf));
348 for (i = 0; mux_help[i] != NULL; i++) {
349 for (j=0; mux_help[i][j] != '\0'; j++) {
350 if (mux_help[i][j] == '%')
351 chr->chr_write(chr, (uint8_t *)ebuf, strlen(ebuf));
352 else
353 chr->chr_write(chr, (uint8_t *)&mux_help[i][j], 1);
354 }
355 }
356 }
357
358 static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
359 {
360 if (d->chr_event[mux_nr])
361 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
362 }
363
364 static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
365 {
366 if (d->term_got_escape) {
367 d->term_got_escape = 0;
368 if (ch == term_escape_char)
369 goto send_char;
370 switch(ch) {
371 case '?':
372 case 'h':
373 mux_print_help(chr);
374 break;
375 case 'x':
376 {
377 const char *term = "QEMU: Terminated\n\r";
378 chr->chr_write(chr,(uint8_t *)term,strlen(term));
379 exit(0);
380 break;
381 }
382 case 's':
383 bdrv_commit_all();
384 break;
385 case 'b':
386 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
387 break;
388 case 'c':
389 /* Switch to the next registered device */
390 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
391 d->focus++;
392 if (d->focus >= d->mux_cnt)
393 d->focus = 0;
394 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
395 break;
396 case 't':
397 d->timestamps = !d->timestamps;
398 d->timestamps_start = -1;
399 d->linestart = 0;
400 break;
401 }
402 } else if (ch == term_escape_char) {
403 d->term_got_escape = 1;
404 } else {
405 send_char:
406 return 1;
407 }
408 return 0;
409 }
410
411 static void mux_chr_accept_input(CharDriverState *chr)
412 {
413 MuxDriver *d = chr->opaque;
414 int m = d->focus;
415
416 while (d->prod[m] != d->cons[m] &&
417 d->chr_can_read[m] &&
418 d->chr_can_read[m](d->ext_opaque[m])) {
419 d->chr_read[m](d->ext_opaque[m],
420 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
421 }
422 }
423
424 static int mux_chr_can_read(void *opaque)
425 {
426 CharDriverState *chr = opaque;
427 MuxDriver *d = chr->opaque;
428 int m = d->focus;
429
430 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
431 return 1;
432 if (d->chr_can_read[m])
433 return d->chr_can_read[m](d->ext_opaque[m]);
434 return 0;
435 }
436
437 static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
438 {
439 CharDriverState *chr = opaque;
440 MuxDriver *d = chr->opaque;
441 int m = d->focus;
442 int i;
443
444 mux_chr_accept_input (opaque);
445
446 for(i = 0; i < size; i++)
447 if (mux_proc_byte(chr, d, buf[i])) {
448 if (d->prod[m] == d->cons[m] &&
449 d->chr_can_read[m] &&
450 d->chr_can_read[m](d->ext_opaque[m]))
451 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
452 else
453 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
454 }
455 }
456
457 static void mux_chr_event(void *opaque, int event)
458 {
459 CharDriverState *chr = opaque;
460 MuxDriver *d = chr->opaque;
461 int i;
462
463 /* Send the event to all registered listeners */
464 for (i = 0; i < d->mux_cnt; i++)
465 mux_chr_send_event(d, i, event);
466 }
467
468 static void mux_chr_update_read_handler(CharDriverState *chr)
469 {
470 MuxDriver *d = chr->opaque;
471
472 if (d->mux_cnt >= MAX_MUX) {
473 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
474 return;
475 }
476 d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
477 d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
478 d->chr_read[d->mux_cnt] = chr->chr_read;
479 d->chr_event[d->mux_cnt] = chr->chr_event;
480 /* Fix up the real driver with mux routines */
481 if (d->mux_cnt == 0) {
482 qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
483 mux_chr_event, chr);
484 }
485 if (d->focus != -1) {
486 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
487 }
488 d->focus = d->mux_cnt;
489 d->mux_cnt++;
490 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
491 }
492
493 static CharDriverState *qemu_chr_open_mux(CharDriverState *drv)
494 {
495 CharDriverState *chr;
496 MuxDriver *d;
497
498 chr = g_malloc0(sizeof(CharDriverState));
499 d = g_malloc0(sizeof(MuxDriver));
500
501 chr->opaque = d;
502 d->drv = drv;
503 d->focus = -1;
504 chr->chr_write = mux_chr_write;
505 chr->chr_update_read_handler = mux_chr_update_read_handler;
506 chr->chr_accept_input = mux_chr_accept_input;
507 /* Frontend guest-open / -close notification is not support with muxes */
508 chr->chr_guest_open = NULL;
509 chr->chr_guest_close = NULL;
510
511 /* Muxes are always open on creation */
512 qemu_chr_be_generic_open(chr);
513
514 return chr;
515 }
516
517
518 #ifdef _WIN32
519 int send_all(int fd, const void *buf, int len1)
520 {
521 int ret, len;
522
523 len = len1;
524 while (len > 0) {
525 ret = send(fd, buf, len, 0);
526 if (ret < 0) {
527 errno = WSAGetLastError();
528 if (errno != WSAEWOULDBLOCK) {
529 return -1;
530 }
531 } else if (ret == 0) {
532 break;
533 } else {
534 buf += ret;
535 len -= ret;
536 }
537 }
538 return len1 - len;
539 }
540
541 #else
542
543 int send_all(int fd, const void *_buf, int len1)
544 {
545 int ret, len;
546 const uint8_t *buf = _buf;
547
548 len = len1;
549 while (len > 0) {
550 ret = write(fd, buf, len);
551 if (ret < 0) {
552 if (errno != EINTR && errno != EAGAIN)
553 return -1;
554 } else if (ret == 0) {
555 break;
556 } else {
557 buf += ret;
558 len -= ret;
559 }
560 }
561 return len1 - len;
562 }
563
564 int recv_all(int fd, void *_buf, int len1, bool single_read)
565 {
566 int ret, len;
567 uint8_t *buf = _buf;
568
569 len = len1;
570 while ((len > 0) && (ret = read(fd, buf, len)) != 0) {
571 if (ret < 0) {
572 if (errno != EINTR && errno != EAGAIN) {
573 return -1;
574 }
575 continue;
576 } else {
577 if (single_read) {
578 return ret;
579 }
580 buf += ret;
581 len -= ret;
582 }
583 }
584 return len1 - len;
585 }
586
587 #endif /* !_WIN32 */
588
589 typedef struct IOWatchPoll
590 {
591 GSource *src;
592 int max_size;
593
594 IOCanReadHandler *fd_can_read;
595 void *opaque;
596
597 QTAILQ_ENTRY(IOWatchPoll) node;
598 } IOWatchPoll;
599
600 static QTAILQ_HEAD(, IOWatchPoll) io_watch_poll_list =
601 QTAILQ_HEAD_INITIALIZER(io_watch_poll_list);
602
603 static IOWatchPoll *io_watch_poll_from_source(GSource *source)
604 {
605 IOWatchPoll *i;
606
607 QTAILQ_FOREACH(i, &io_watch_poll_list, node) {
608 if (i->src == source) {
609 return i;
610 }
611 }
612
613 return NULL;
614 }
615
616 static gboolean io_watch_poll_prepare(GSource *source, gint *timeout_)
617 {
618 IOWatchPoll *iwp = io_watch_poll_from_source(source);
619
620 iwp->max_size = iwp->fd_can_read(iwp->opaque);
621 if (iwp->max_size == 0) {
622 return FALSE;
623 }
624
625 return g_io_watch_funcs.prepare(source, timeout_);
626 }
627
628 static gboolean io_watch_poll_check(GSource *source)
629 {
630 IOWatchPoll *iwp = io_watch_poll_from_source(source);
631
632 if (iwp->max_size == 0) {
633 return FALSE;
634 }
635
636 return g_io_watch_funcs.check(source);
637 }
638
639 static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
640 gpointer user_data)
641 {
642 return g_io_watch_funcs.dispatch(source, callback, user_data);
643 }
644
645 static void io_watch_poll_finalize(GSource *source)
646 {
647 IOWatchPoll *iwp = io_watch_poll_from_source(source);
648 QTAILQ_REMOVE(&io_watch_poll_list, iwp, node);
649 g_io_watch_funcs.finalize(source);
650 }
651
652 static GSourceFuncs io_watch_poll_funcs = {
653 .prepare = io_watch_poll_prepare,
654 .check = io_watch_poll_check,
655 .dispatch = io_watch_poll_dispatch,
656 .finalize = io_watch_poll_finalize,
657 };
658
659 /* Can only be used for read */
660 static guint io_add_watch_poll(GIOChannel *channel,
661 IOCanReadHandler *fd_can_read,
662 GIOFunc fd_read,
663 gpointer user_data)
664 {
665 IOWatchPoll *iwp;
666 GSource *src;
667 guint tag;
668
669 src = g_io_create_watch(channel, G_IO_IN | G_IO_ERR | G_IO_HUP);
670 g_source_set_funcs(src, &io_watch_poll_funcs);
671 g_source_set_callback(src, (GSourceFunc)fd_read, user_data, NULL);
672 tag = g_source_attach(src, NULL);
673 g_source_unref(src);
674
675 iwp = g_malloc0(sizeof(*iwp));
676 iwp->src = src;
677 iwp->max_size = 0;
678 iwp->fd_can_read = fd_can_read;
679 iwp->opaque = user_data;
680
681 QTAILQ_INSERT_HEAD(&io_watch_poll_list, iwp, node);
682
683 return tag;
684 }
685
686 #ifndef _WIN32
687 static GIOChannel *io_channel_from_fd(int fd)
688 {
689 GIOChannel *chan;
690
691 if (fd == -1) {
692 return NULL;
693 }
694
695 chan = g_io_channel_unix_new(fd);
696
697 g_io_channel_set_encoding(chan, NULL, NULL);
698 g_io_channel_set_buffered(chan, FALSE);
699
700 return chan;
701 }
702 #endif
703
704 static GIOChannel *io_channel_from_socket(int fd)
705 {
706 GIOChannel *chan;
707
708 if (fd == -1) {
709 return NULL;
710 }
711
712 #ifdef _WIN32
713 chan = g_io_channel_win32_new_socket(fd);
714 #else
715 chan = g_io_channel_unix_new(fd);
716 #endif
717
718 g_io_channel_set_encoding(chan, NULL, NULL);
719 g_io_channel_set_buffered(chan, FALSE);
720
721 return chan;
722 }
723
724 static int io_channel_send_all(GIOChannel *fd, const void *_buf, int len1)
725 {
726 GIOStatus status;
727 gsize bytes_written;
728 int len;
729 const uint8_t *buf = _buf;
730
731 len = len1;
732 while (len > 0) {
733 status = g_io_channel_write_chars(fd, (const gchar *)buf, len,
734 &bytes_written, NULL);
735 if (status != G_IO_STATUS_NORMAL) {
736 if (status == G_IO_STATUS_AGAIN) {
737 errno = EAGAIN;
738 return -1;
739 } else {
740 errno = EINVAL;
741 return -1;
742 }
743 } else if (status == G_IO_STATUS_EOF) {
744 break;
745 } else {
746 buf += bytes_written;
747 len -= bytes_written;
748 }
749 }
750 return len1 - len;
751 }
752
753 #ifndef _WIN32
754
755 typedef struct FDCharDriver {
756 CharDriverState *chr;
757 GIOChannel *fd_in, *fd_out;
758 guint fd_in_tag;
759 int max_size;
760 QTAILQ_ENTRY(FDCharDriver) node;
761 } FDCharDriver;
762
763 static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
764 {
765 FDCharDriver *s = chr->opaque;
766
767 return io_channel_send_all(s->fd_out, buf, len);
768 }
769
770 static gboolean fd_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
771 {
772 CharDriverState *chr = opaque;
773 FDCharDriver *s = chr->opaque;
774 int len;
775 uint8_t buf[READ_BUF_LEN];
776 GIOStatus status;
777 gsize bytes_read;
778
779 len = sizeof(buf);
780 if (len > s->max_size) {
781 len = s->max_size;
782 }
783 if (len == 0) {
784 return FALSE;
785 }
786
787 status = g_io_channel_read_chars(chan, (gchar *)buf,
788 len, &bytes_read, NULL);
789 if (status == G_IO_STATUS_EOF) {
790 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
791 return FALSE;
792 }
793 if (status == G_IO_STATUS_NORMAL) {
794 qemu_chr_be_write(chr, buf, bytes_read);
795 }
796
797 return TRUE;
798 }
799
800 static int fd_chr_read_poll(void *opaque)
801 {
802 CharDriverState *chr = opaque;
803 FDCharDriver *s = chr->opaque;
804
805 s->max_size = qemu_chr_be_can_write(chr);
806 return s->max_size;
807 }
808
809 static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
810 {
811 FDCharDriver *s = chr->opaque;
812 return g_io_create_watch(s->fd_out, cond);
813 }
814
815 static void fd_chr_update_read_handler(CharDriverState *chr)
816 {
817 FDCharDriver *s = chr->opaque;
818
819 if (s->fd_in_tag) {
820 g_source_remove(s->fd_in_tag);
821 }
822
823 if (s->fd_in) {
824 s->fd_in_tag = io_add_watch_poll(s->fd_in, fd_chr_read_poll, fd_chr_read, chr);
825 }
826 }
827
828 static void fd_chr_close(struct CharDriverState *chr)
829 {
830 FDCharDriver *s = chr->opaque;
831
832 if (s->fd_in_tag) {
833 g_source_remove(s->fd_in_tag);
834 s->fd_in_tag = 0;
835 }
836
837 if (s->fd_in) {
838 g_io_channel_unref(s->fd_in);
839 }
840 if (s->fd_out) {
841 g_io_channel_unref(s->fd_out);
842 }
843
844 g_free(s);
845 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
846 }
847
848 /* open a character device to a unix fd */
849 static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
850 {
851 CharDriverState *chr;
852 FDCharDriver *s;
853
854 chr = g_malloc0(sizeof(CharDriverState));
855 s = g_malloc0(sizeof(FDCharDriver));
856 s->fd_in = io_channel_from_fd(fd_in);
857 s->fd_out = io_channel_from_fd(fd_out);
858 fcntl(fd_out, F_SETFL, O_NONBLOCK);
859 s->chr = chr;
860 chr->opaque = s;
861 chr->chr_add_watch = fd_chr_add_watch;
862 chr->chr_write = fd_chr_write;
863 chr->chr_update_read_handler = fd_chr_update_read_handler;
864 chr->chr_close = fd_chr_close;
865
866 qemu_chr_be_generic_open(chr);
867
868 return chr;
869 }
870
871 static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
872 {
873 int fd_in, fd_out;
874 char filename_in[256], filename_out[256];
875 const char *filename = opts->device;
876
877 if (filename == NULL) {
878 fprintf(stderr, "chardev: pipe: no filename given\n");
879 return NULL;
880 }
881
882 snprintf(filename_in, 256, "%s.in", filename);
883 snprintf(filename_out, 256, "%s.out", filename);
884 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
885 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
886 if (fd_in < 0 || fd_out < 0) {
887 if (fd_in >= 0)
888 close(fd_in);
889 if (fd_out >= 0)
890 close(fd_out);
891 TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
892 if (fd_in < 0) {
893 return NULL;
894 }
895 }
896 return qemu_chr_open_fd(fd_in, fd_out);
897 }
898
899 /* init terminal so that we can grab keys */
900 static struct termios oldtty;
901 static int old_fd0_flags;
902 static bool stdio_allow_signal;
903
904 static void term_exit(void)
905 {
906 tcsetattr (0, TCSANOW, &oldtty);
907 fcntl(0, F_SETFL, old_fd0_flags);
908 }
909
910 static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
911 {
912 struct termios tty;
913
914 tty = oldtty;
915 if (!echo) {
916 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
917 |INLCR|IGNCR|ICRNL|IXON);
918 tty.c_oflag |= OPOST;
919 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
920 tty.c_cflag &= ~(CSIZE|PARENB);
921 tty.c_cflag |= CS8;
922 tty.c_cc[VMIN] = 1;
923 tty.c_cc[VTIME] = 0;
924 }
925 /* if graphical mode, we allow Ctrl-C handling */
926 if (!stdio_allow_signal)
927 tty.c_lflag &= ~ISIG;
928
929 tcsetattr (0, TCSANOW, &tty);
930 }
931
932 static void qemu_chr_close_stdio(struct CharDriverState *chr)
933 {
934 term_exit();
935 fd_chr_close(chr);
936 }
937
938 static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
939 {
940 CharDriverState *chr;
941
942 if (is_daemonized()) {
943 error_report("cannot use stdio with -daemonize");
944 return NULL;
945 }
946 old_fd0_flags = fcntl(0, F_GETFL);
947 tcgetattr (0, &oldtty);
948 fcntl(0, F_SETFL, O_NONBLOCK);
949 atexit(term_exit);
950
951 chr = qemu_chr_open_fd(0, 1);
952 chr->chr_close = qemu_chr_close_stdio;
953 chr->chr_set_echo = qemu_chr_set_echo_stdio;
954 stdio_allow_signal = display_type != DT_NOGRAPHIC;
955 if (opts->has_signal) {
956 stdio_allow_signal = opts->signal;
957 }
958 qemu_chr_fe_set_echo(chr, false);
959
960 return chr;
961 }
962
963 #ifdef __sun__
964 /* Once Solaris has openpty(), this is going to be removed. */
965 static int openpty(int *amaster, int *aslave, char *name,
966 struct termios *termp, struct winsize *winp)
967 {
968 const char *slave;
969 int mfd = -1, sfd = -1;
970
971 *amaster = *aslave = -1;
972
973 mfd = open("/dev/ptmx", O_RDWR | O_NOCTTY);
974 if (mfd < 0)
975 goto err;
976
977 if (grantpt(mfd) == -1 || unlockpt(mfd) == -1)
978 goto err;
979
980 if ((slave = ptsname(mfd)) == NULL)
981 goto err;
982
983 if ((sfd = open(slave, O_RDONLY | O_NOCTTY)) == -1)
984 goto err;
985
986 if (ioctl(sfd, I_PUSH, "ptem") == -1 ||
987 (termp != NULL && tcgetattr(sfd, termp) < 0))
988 goto err;
989
990 if (amaster)
991 *amaster = mfd;
992 if (aslave)
993 *aslave = sfd;
994 if (winp)
995 ioctl(sfd, TIOCSWINSZ, winp);
996
997 return 0;
998
999 err:
1000 if (sfd != -1)
1001 close(sfd);
1002 close(mfd);
1003 return -1;
1004 }
1005
1006 static void cfmakeraw (struct termios *termios_p)
1007 {
1008 termios_p->c_iflag &=
1009 ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
1010 termios_p->c_oflag &= ~OPOST;
1011 termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
1012 termios_p->c_cflag &= ~(CSIZE|PARENB);
1013 termios_p->c_cflag |= CS8;
1014
1015 termios_p->c_cc[VMIN] = 0;
1016 termios_p->c_cc[VTIME] = 0;
1017 }
1018 #endif
1019
1020 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
1021 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
1022 || defined(__GLIBC__)
1023
1024 #define HAVE_CHARDEV_TTY 1
1025
1026 typedef struct {
1027 GIOChannel *fd;
1028 guint fd_tag;
1029 int connected;
1030 int polling;
1031 int read_bytes;
1032 guint timer_tag;
1033 } PtyCharDriver;
1034
1035 static void pty_chr_update_read_handler(CharDriverState *chr);
1036 static void pty_chr_state(CharDriverState *chr, int connected);
1037
1038 static gboolean pty_chr_timer(gpointer opaque)
1039 {
1040 struct CharDriverState *chr = opaque;
1041 PtyCharDriver *s = chr->opaque;
1042
1043 if (s->connected) {
1044 goto out;
1045 }
1046 if (s->polling) {
1047 /* If we arrive here without polling being cleared due
1048 * read returning -EIO, then we are (re-)connected */
1049 pty_chr_state(chr, 1);
1050 goto out;
1051 }
1052
1053 /* Next poll ... */
1054 pty_chr_update_read_handler(chr);
1055
1056 out:
1057 return FALSE;
1058 }
1059
1060 static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
1061 {
1062 PtyCharDriver *s = chr->opaque;
1063
1064 if (s->timer_tag) {
1065 g_source_remove(s->timer_tag);
1066 s->timer_tag = 0;
1067 }
1068
1069 if (ms == 1000) {
1070 s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
1071 } else {
1072 s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
1073 }
1074 }
1075
1076 static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1077 {
1078 PtyCharDriver *s = chr->opaque;
1079
1080 if (!s->connected) {
1081 /* guest sends data, check for (re-)connect */
1082 pty_chr_update_read_handler(chr);
1083 return 0;
1084 }
1085 return io_channel_send_all(s->fd, buf, len);
1086 }
1087
1088 static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1089 {
1090 PtyCharDriver *s = chr->opaque;
1091 return g_io_create_watch(s->fd, cond);
1092 }
1093
1094 static int pty_chr_read_poll(void *opaque)
1095 {
1096 CharDriverState *chr = opaque;
1097 PtyCharDriver *s = chr->opaque;
1098
1099 s->read_bytes = qemu_chr_be_can_write(chr);
1100 return s->read_bytes;
1101 }
1102
1103 static gboolean pty_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
1104 {
1105 CharDriverState *chr = opaque;
1106 PtyCharDriver *s = chr->opaque;
1107 gsize size, len;
1108 uint8_t buf[READ_BUF_LEN];
1109 GIOStatus status;
1110
1111 len = sizeof(buf);
1112 if (len > s->read_bytes)
1113 len = s->read_bytes;
1114 if (len == 0)
1115 return FALSE;
1116 status = g_io_channel_read_chars(s->fd, (gchar *)buf, len, &size, NULL);
1117 if (status != G_IO_STATUS_NORMAL) {
1118 pty_chr_state(chr, 0);
1119 return FALSE;
1120 } else {
1121 pty_chr_state(chr, 1);
1122 qemu_chr_be_write(chr, buf, size);
1123 }
1124 return TRUE;
1125 }
1126
1127 static void pty_chr_update_read_handler(CharDriverState *chr)
1128 {
1129 PtyCharDriver *s = chr->opaque;
1130
1131 if (s->fd_tag) {
1132 g_source_remove(s->fd_tag);
1133 }
1134
1135 s->fd_tag = io_add_watch_poll(s->fd, pty_chr_read_poll, pty_chr_read, chr);
1136 s->polling = 1;
1137 /*
1138 * Short timeout here: just need wait long enougth that qemu makes
1139 * it through the poll loop once. When reconnected we want a
1140 * short timeout so we notice it almost instantly. Otherwise
1141 * read() gives us -EIO instantly, making pty_chr_state() reset the
1142 * timeout to the normal (much longer) poll interval before the
1143 * timer triggers.
1144 */
1145 pty_chr_rearm_timer(chr, 10);
1146 }
1147
1148 static void pty_chr_state(CharDriverState *chr, int connected)
1149 {
1150 PtyCharDriver *s = chr->opaque;
1151
1152 if (!connected) {
1153 g_source_remove(s->fd_tag);
1154 s->fd_tag = 0;
1155 s->connected = 0;
1156 s->polling = 0;
1157 /* (re-)connect poll interval for idle guests: once per second.
1158 * We check more frequently in case the guests sends data to
1159 * the virtual device linked to our pty. */
1160 pty_chr_rearm_timer(chr, 1000);
1161 } else {
1162 if (!s->connected)
1163 qemu_chr_be_generic_open(chr);
1164 s->connected = 1;
1165 }
1166 }
1167
1168
1169 static void pty_chr_close(struct CharDriverState *chr)
1170 {
1171 PtyCharDriver *s = chr->opaque;
1172 int fd;
1173
1174 if (s->fd_tag) {
1175 g_source_remove(s->fd_tag);
1176 }
1177 fd = g_io_channel_unix_get_fd(s->fd);
1178 g_io_channel_unref(s->fd);
1179 close(fd);
1180 if (s->timer_tag) {
1181 g_source_remove(s->timer_tag);
1182 }
1183 g_free(s);
1184 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1185 }
1186
1187 static CharDriverState *qemu_chr_open_pty(const char *id,
1188 ChardevReturn *ret)
1189 {
1190 CharDriverState *chr;
1191 PtyCharDriver *s;
1192 struct termios tty;
1193 int master_fd, slave_fd;
1194 #if defined(__OpenBSD__) || defined(__DragonFly__)
1195 char pty_name[PATH_MAX];
1196 #define q_ptsname(x) pty_name
1197 #else
1198 char *pty_name = NULL;
1199 #define q_ptsname(x) ptsname(x)
1200 #endif
1201
1202 if (openpty(&master_fd, &slave_fd, pty_name, NULL, NULL) < 0) {
1203 return NULL;
1204 }
1205
1206 /* Set raw attributes on the pty. */
1207 tcgetattr(slave_fd, &tty);
1208 cfmakeraw(&tty);
1209 tcsetattr(slave_fd, TCSAFLUSH, &tty);
1210 close(slave_fd);
1211
1212 chr = g_malloc0(sizeof(CharDriverState));
1213
1214 chr->filename = g_strdup_printf("pty:%s", q_ptsname(master_fd));
1215 ret->pty = g_strdup(q_ptsname(master_fd));
1216 ret->has_pty = true;
1217
1218 fprintf(stderr, "char device redirected to %s (label %s)\n",
1219 q_ptsname(master_fd), id);
1220
1221 s = g_malloc0(sizeof(PtyCharDriver));
1222 chr->opaque = s;
1223 chr->chr_write = pty_chr_write;
1224 chr->chr_update_read_handler = pty_chr_update_read_handler;
1225 chr->chr_close = pty_chr_close;
1226 chr->chr_add_watch = pty_chr_add_watch;
1227
1228 s->fd = io_channel_from_fd(master_fd);
1229 s->timer_tag = 0;
1230
1231 return chr;
1232 }
1233
1234 static void tty_serial_init(int fd, int speed,
1235 int parity, int data_bits, int stop_bits)
1236 {
1237 struct termios tty;
1238 speed_t spd;
1239
1240 #if 0
1241 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1242 speed, parity, data_bits, stop_bits);
1243 #endif
1244 tcgetattr (fd, &tty);
1245
1246 #define check_speed(val) if (speed <= val) { spd = B##val; break; }
1247 speed = speed * 10 / 11;
1248 do {
1249 check_speed(50);
1250 check_speed(75);
1251 check_speed(110);
1252 check_speed(134);
1253 check_speed(150);
1254 check_speed(200);
1255 check_speed(300);
1256 check_speed(600);
1257 check_speed(1200);
1258 check_speed(1800);
1259 check_speed(2400);
1260 check_speed(4800);
1261 check_speed(9600);
1262 check_speed(19200);
1263 check_speed(38400);
1264 /* Non-Posix values follow. They may be unsupported on some systems. */
1265 check_speed(57600);
1266 check_speed(115200);
1267 #ifdef B230400
1268 check_speed(230400);
1269 #endif
1270 #ifdef B460800
1271 check_speed(460800);
1272 #endif
1273 #ifdef B500000
1274 check_speed(500000);
1275 #endif
1276 #ifdef B576000
1277 check_speed(576000);
1278 #endif
1279 #ifdef B921600
1280 check_speed(921600);
1281 #endif
1282 #ifdef B1000000
1283 check_speed(1000000);
1284 #endif
1285 #ifdef B1152000
1286 check_speed(1152000);
1287 #endif
1288 #ifdef B1500000
1289 check_speed(1500000);
1290 #endif
1291 #ifdef B2000000
1292 check_speed(2000000);
1293 #endif
1294 #ifdef B2500000
1295 check_speed(2500000);
1296 #endif
1297 #ifdef B3000000
1298 check_speed(3000000);
1299 #endif
1300 #ifdef B3500000
1301 check_speed(3500000);
1302 #endif
1303 #ifdef B4000000
1304 check_speed(4000000);
1305 #endif
1306 spd = B115200;
1307 } while (0);
1308
1309 cfsetispeed(&tty, spd);
1310 cfsetospeed(&tty, spd);
1311
1312 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1313 |INLCR|IGNCR|ICRNL|IXON);
1314 tty.c_oflag |= OPOST;
1315 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1316 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1317 switch(data_bits) {
1318 default:
1319 case 8:
1320 tty.c_cflag |= CS8;
1321 break;
1322 case 7:
1323 tty.c_cflag |= CS7;
1324 break;
1325 case 6:
1326 tty.c_cflag |= CS6;
1327 break;
1328 case 5:
1329 tty.c_cflag |= CS5;
1330 break;
1331 }
1332 switch(parity) {
1333 default:
1334 case 'N':
1335 break;
1336 case 'E':
1337 tty.c_cflag |= PARENB;
1338 break;
1339 case 'O':
1340 tty.c_cflag |= PARENB | PARODD;
1341 break;
1342 }
1343 if (stop_bits == 2)
1344 tty.c_cflag |= CSTOPB;
1345
1346 tcsetattr (fd, TCSANOW, &tty);
1347 }
1348
1349 static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1350 {
1351 FDCharDriver *s = chr->opaque;
1352
1353 switch(cmd) {
1354 case CHR_IOCTL_SERIAL_SET_PARAMS:
1355 {
1356 QEMUSerialSetParams *ssp = arg;
1357 tty_serial_init(g_io_channel_unix_get_fd(s->fd_in),
1358 ssp->speed, ssp->parity,
1359 ssp->data_bits, ssp->stop_bits);
1360 }
1361 break;
1362 case CHR_IOCTL_SERIAL_SET_BREAK:
1363 {
1364 int enable = *(int *)arg;
1365 if (enable) {
1366 tcsendbreak(g_io_channel_unix_get_fd(s->fd_in), 1);
1367 }
1368 }
1369 break;
1370 case CHR_IOCTL_SERIAL_GET_TIOCM:
1371 {
1372 int sarg = 0;
1373 int *targ = (int *)arg;
1374 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &sarg);
1375 *targ = 0;
1376 if (sarg & TIOCM_CTS)
1377 *targ |= CHR_TIOCM_CTS;
1378 if (sarg & TIOCM_CAR)
1379 *targ |= CHR_TIOCM_CAR;
1380 if (sarg & TIOCM_DSR)
1381 *targ |= CHR_TIOCM_DSR;
1382 if (sarg & TIOCM_RI)
1383 *targ |= CHR_TIOCM_RI;
1384 if (sarg & TIOCM_DTR)
1385 *targ |= CHR_TIOCM_DTR;
1386 if (sarg & TIOCM_RTS)
1387 *targ |= CHR_TIOCM_RTS;
1388 }
1389 break;
1390 case CHR_IOCTL_SERIAL_SET_TIOCM:
1391 {
1392 int sarg = *(int *)arg;
1393 int targ = 0;
1394 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &targ);
1395 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1396 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1397 if (sarg & CHR_TIOCM_CTS)
1398 targ |= TIOCM_CTS;
1399 if (sarg & CHR_TIOCM_CAR)
1400 targ |= TIOCM_CAR;
1401 if (sarg & CHR_TIOCM_DSR)
1402 targ |= TIOCM_DSR;
1403 if (sarg & CHR_TIOCM_RI)
1404 targ |= TIOCM_RI;
1405 if (sarg & CHR_TIOCM_DTR)
1406 targ |= TIOCM_DTR;
1407 if (sarg & CHR_TIOCM_RTS)
1408 targ |= TIOCM_RTS;
1409 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMSET, &targ);
1410 }
1411 break;
1412 default:
1413 return -ENOTSUP;
1414 }
1415 return 0;
1416 }
1417
1418 static void qemu_chr_close_tty(CharDriverState *chr)
1419 {
1420 FDCharDriver *s = chr->opaque;
1421 int fd = -1;
1422
1423 if (s) {
1424 fd = g_io_channel_unix_get_fd(s->fd_in);
1425 }
1426
1427 fd_chr_close(chr);
1428
1429 if (fd >= 0) {
1430 close(fd);
1431 }
1432 }
1433
1434 static CharDriverState *qemu_chr_open_tty_fd(int fd)
1435 {
1436 CharDriverState *chr;
1437
1438 tty_serial_init(fd, 115200, 'N', 8, 1);
1439 chr = qemu_chr_open_fd(fd, fd);
1440 chr->chr_ioctl = tty_serial_ioctl;
1441 chr->chr_close = qemu_chr_close_tty;
1442 return chr;
1443 }
1444 #endif /* __linux__ || __sun__ */
1445
1446 #if defined(__linux__)
1447
1448 #define HAVE_CHARDEV_PARPORT 1
1449
1450 typedef struct {
1451 int fd;
1452 int mode;
1453 } ParallelCharDriver;
1454
1455 static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1456 {
1457 if (s->mode != mode) {
1458 int m = mode;
1459 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1460 return 0;
1461 s->mode = mode;
1462 }
1463 return 1;
1464 }
1465
1466 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1467 {
1468 ParallelCharDriver *drv = chr->opaque;
1469 int fd = drv->fd;
1470 uint8_t b;
1471
1472 switch(cmd) {
1473 case CHR_IOCTL_PP_READ_DATA:
1474 if (ioctl(fd, PPRDATA, &b) < 0)
1475 return -ENOTSUP;
1476 *(uint8_t *)arg = b;
1477 break;
1478 case CHR_IOCTL_PP_WRITE_DATA:
1479 b = *(uint8_t *)arg;
1480 if (ioctl(fd, PPWDATA, &b) < 0)
1481 return -ENOTSUP;
1482 break;
1483 case CHR_IOCTL_PP_READ_CONTROL:
1484 if (ioctl(fd, PPRCONTROL, &b) < 0)
1485 return -ENOTSUP;
1486 /* Linux gives only the lowest bits, and no way to know data
1487 direction! For better compatibility set the fixed upper
1488 bits. */
1489 *(uint8_t *)arg = b | 0xc0;
1490 break;
1491 case CHR_IOCTL_PP_WRITE_CONTROL:
1492 b = *(uint8_t *)arg;
1493 if (ioctl(fd, PPWCONTROL, &b) < 0)
1494 return -ENOTSUP;
1495 break;
1496 case CHR_IOCTL_PP_READ_STATUS:
1497 if (ioctl(fd, PPRSTATUS, &b) < 0)
1498 return -ENOTSUP;
1499 *(uint8_t *)arg = b;
1500 break;
1501 case CHR_IOCTL_PP_DATA_DIR:
1502 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1503 return -ENOTSUP;
1504 break;
1505 case CHR_IOCTL_PP_EPP_READ_ADDR:
1506 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1507 struct ParallelIOArg *parg = arg;
1508 int n = read(fd, parg->buffer, parg->count);
1509 if (n != parg->count) {
1510 return -EIO;
1511 }
1512 }
1513 break;
1514 case CHR_IOCTL_PP_EPP_READ:
1515 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
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_WRITE_ADDR:
1524 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1525 struct ParallelIOArg *parg = arg;
1526 int n = write(fd, parg->buffer, parg->count);
1527 if (n != parg->count) {
1528 return -EIO;
1529 }
1530 }
1531 break;
1532 case CHR_IOCTL_PP_EPP_WRITE:
1533 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
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 default:
1542 return -ENOTSUP;
1543 }
1544 return 0;
1545 }
1546
1547 static void pp_close(CharDriverState *chr)
1548 {
1549 ParallelCharDriver *drv = chr->opaque;
1550 int fd = drv->fd;
1551
1552 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1553 ioctl(fd, PPRELEASE);
1554 close(fd);
1555 g_free(drv);
1556 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1557 }
1558
1559 static CharDriverState *qemu_chr_open_pp_fd(int fd)
1560 {
1561 CharDriverState *chr;
1562 ParallelCharDriver *drv;
1563
1564 if (ioctl(fd, PPCLAIM) < 0) {
1565 close(fd);
1566 return NULL;
1567 }
1568
1569 drv = g_malloc0(sizeof(ParallelCharDriver));
1570 drv->fd = fd;
1571 drv->mode = IEEE1284_MODE_COMPAT;
1572
1573 chr = g_malloc0(sizeof(CharDriverState));
1574 chr->chr_write = null_chr_write;
1575 chr->chr_ioctl = pp_ioctl;
1576 chr->chr_close = pp_close;
1577 chr->opaque = drv;
1578
1579 qemu_chr_be_generic_open(chr);
1580
1581 return chr;
1582 }
1583 #endif /* __linux__ */
1584
1585 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
1586
1587 #define HAVE_CHARDEV_PARPORT 1
1588
1589 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1590 {
1591 int fd = (int)(intptr_t)chr->opaque;
1592 uint8_t b;
1593
1594 switch(cmd) {
1595 case CHR_IOCTL_PP_READ_DATA:
1596 if (ioctl(fd, PPIGDATA, &b) < 0)
1597 return -ENOTSUP;
1598 *(uint8_t *)arg = b;
1599 break;
1600 case CHR_IOCTL_PP_WRITE_DATA:
1601 b = *(uint8_t *)arg;
1602 if (ioctl(fd, PPISDATA, &b) < 0)
1603 return -ENOTSUP;
1604 break;
1605 case CHR_IOCTL_PP_READ_CONTROL:
1606 if (ioctl(fd, PPIGCTRL, &b) < 0)
1607 return -ENOTSUP;
1608 *(uint8_t *)arg = b;
1609 break;
1610 case CHR_IOCTL_PP_WRITE_CONTROL:
1611 b = *(uint8_t *)arg;
1612 if (ioctl(fd, PPISCTRL, &b) < 0)
1613 return -ENOTSUP;
1614 break;
1615 case CHR_IOCTL_PP_READ_STATUS:
1616 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1617 return -ENOTSUP;
1618 *(uint8_t *)arg = b;
1619 break;
1620 default:
1621 return -ENOTSUP;
1622 }
1623 return 0;
1624 }
1625
1626 static CharDriverState *qemu_chr_open_pp_fd(int fd)
1627 {
1628 CharDriverState *chr;
1629
1630 chr = g_malloc0(sizeof(CharDriverState));
1631 chr->opaque = (void *)(intptr_t)fd;
1632 chr->chr_write = null_chr_write;
1633 chr->chr_ioctl = pp_ioctl;
1634 return chr;
1635 }
1636 #endif
1637
1638 #else /* _WIN32 */
1639
1640 typedef struct {
1641 int max_size;
1642 HANDLE hcom, hrecv, hsend;
1643 OVERLAPPED orecv, osend;
1644 BOOL fpipe;
1645 DWORD len;
1646 } WinCharState;
1647
1648 typedef struct {
1649 HANDLE hStdIn;
1650 HANDLE hInputReadyEvent;
1651 HANDLE hInputDoneEvent;
1652 HANDLE hInputThread;
1653 uint8_t win_stdio_buf;
1654 } WinStdioCharState;
1655
1656 #define NSENDBUF 2048
1657 #define NRECVBUF 2048
1658 #define MAXCONNECT 1
1659 #define NTIMEOUT 5000
1660
1661 static int win_chr_poll(void *opaque);
1662 static int win_chr_pipe_poll(void *opaque);
1663
1664 static void win_chr_close(CharDriverState *chr)
1665 {
1666 WinCharState *s = chr->opaque;
1667
1668 if (s->hsend) {
1669 CloseHandle(s->hsend);
1670 s->hsend = NULL;
1671 }
1672 if (s->hrecv) {
1673 CloseHandle(s->hrecv);
1674 s->hrecv = NULL;
1675 }
1676 if (s->hcom) {
1677 CloseHandle(s->hcom);
1678 s->hcom = NULL;
1679 }
1680 if (s->fpipe)
1681 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1682 else
1683 qemu_del_polling_cb(win_chr_poll, chr);
1684
1685 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1686 }
1687
1688 static int win_chr_init(CharDriverState *chr, const char *filename)
1689 {
1690 WinCharState *s = chr->opaque;
1691 COMMCONFIG comcfg;
1692 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1693 COMSTAT comstat;
1694 DWORD size;
1695 DWORD err;
1696
1697 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1698 if (!s->hsend) {
1699 fprintf(stderr, "Failed CreateEvent\n");
1700 goto fail;
1701 }
1702 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1703 if (!s->hrecv) {
1704 fprintf(stderr, "Failed CreateEvent\n");
1705 goto fail;
1706 }
1707
1708 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1709 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1710 if (s->hcom == INVALID_HANDLE_VALUE) {
1711 fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
1712 s->hcom = NULL;
1713 goto fail;
1714 }
1715
1716 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
1717 fprintf(stderr, "Failed SetupComm\n");
1718 goto fail;
1719 }
1720
1721 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1722 size = sizeof(COMMCONFIG);
1723 GetDefaultCommConfig(filename, &comcfg, &size);
1724 comcfg.dcb.DCBlength = sizeof(DCB);
1725 CommConfigDialog(filename, NULL, &comcfg);
1726
1727 if (!SetCommState(s->hcom, &comcfg.dcb)) {
1728 fprintf(stderr, "Failed SetCommState\n");
1729 goto fail;
1730 }
1731
1732 if (!SetCommMask(s->hcom, EV_ERR)) {
1733 fprintf(stderr, "Failed SetCommMask\n");
1734 goto fail;
1735 }
1736
1737 cto.ReadIntervalTimeout = MAXDWORD;
1738 if (!SetCommTimeouts(s->hcom, &cto)) {
1739 fprintf(stderr, "Failed SetCommTimeouts\n");
1740 goto fail;
1741 }
1742
1743 if (!ClearCommError(s->hcom, &err, &comstat)) {
1744 fprintf(stderr, "Failed ClearCommError\n");
1745 goto fail;
1746 }
1747 qemu_add_polling_cb(win_chr_poll, chr);
1748 return 0;
1749
1750 fail:
1751 win_chr_close(chr);
1752 return -1;
1753 }
1754
1755 static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1756 {
1757 WinCharState *s = chr->opaque;
1758 DWORD len, ret, size, err;
1759
1760 len = len1;
1761 ZeroMemory(&s->osend, sizeof(s->osend));
1762 s->osend.hEvent = s->hsend;
1763 while (len > 0) {
1764 if (s->hsend)
1765 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1766 else
1767 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1768 if (!ret) {
1769 err = GetLastError();
1770 if (err == ERROR_IO_PENDING) {
1771 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1772 if (ret) {
1773 buf += size;
1774 len -= size;
1775 } else {
1776 break;
1777 }
1778 } else {
1779 break;
1780 }
1781 } else {
1782 buf += size;
1783 len -= size;
1784 }
1785 }
1786 return len1 - len;
1787 }
1788
1789 static int win_chr_read_poll(CharDriverState *chr)
1790 {
1791 WinCharState *s = chr->opaque;
1792
1793 s->max_size = qemu_chr_be_can_write(chr);
1794 return s->max_size;
1795 }
1796
1797 static void win_chr_readfile(CharDriverState *chr)
1798 {
1799 WinCharState *s = chr->opaque;
1800 int ret, err;
1801 uint8_t buf[READ_BUF_LEN];
1802 DWORD size;
1803
1804 ZeroMemory(&s->orecv, sizeof(s->orecv));
1805 s->orecv.hEvent = s->hrecv;
1806 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
1807 if (!ret) {
1808 err = GetLastError();
1809 if (err == ERROR_IO_PENDING) {
1810 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
1811 }
1812 }
1813
1814 if (size > 0) {
1815 qemu_chr_be_write(chr, buf, size);
1816 }
1817 }
1818
1819 static void win_chr_read(CharDriverState *chr)
1820 {
1821 WinCharState *s = chr->opaque;
1822
1823 if (s->len > s->max_size)
1824 s->len = s->max_size;
1825 if (s->len == 0)
1826 return;
1827
1828 win_chr_readfile(chr);
1829 }
1830
1831 static int win_chr_poll(void *opaque)
1832 {
1833 CharDriverState *chr = opaque;
1834 WinCharState *s = chr->opaque;
1835 COMSTAT status;
1836 DWORD comerr;
1837
1838 ClearCommError(s->hcom, &comerr, &status);
1839 if (status.cbInQue > 0) {
1840 s->len = status.cbInQue;
1841 win_chr_read_poll(chr);
1842 win_chr_read(chr);
1843 return 1;
1844 }
1845 return 0;
1846 }
1847
1848 static CharDriverState *qemu_chr_open_win_path(const char *filename)
1849 {
1850 CharDriverState *chr;
1851 WinCharState *s;
1852
1853 chr = g_malloc0(sizeof(CharDriverState));
1854 s = g_malloc0(sizeof(WinCharState));
1855 chr->opaque = s;
1856 chr->chr_write = win_chr_write;
1857 chr->chr_close = win_chr_close;
1858
1859 if (win_chr_init(chr, filename) < 0) {
1860 g_free(s);
1861 g_free(chr);
1862 return NULL;
1863 }
1864 qemu_chr_be_generic_open(chr);
1865 return chr;
1866 }
1867
1868 static int win_chr_pipe_poll(void *opaque)
1869 {
1870 CharDriverState *chr = opaque;
1871 WinCharState *s = chr->opaque;
1872 DWORD size;
1873
1874 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
1875 if (size > 0) {
1876 s->len = size;
1877 win_chr_read_poll(chr);
1878 win_chr_read(chr);
1879 return 1;
1880 }
1881 return 0;
1882 }
1883
1884 static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
1885 {
1886 WinCharState *s = chr->opaque;
1887 OVERLAPPED ov;
1888 int ret;
1889 DWORD size;
1890 char openname[256];
1891
1892 s->fpipe = TRUE;
1893
1894 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1895 if (!s->hsend) {
1896 fprintf(stderr, "Failed CreateEvent\n");
1897 goto fail;
1898 }
1899 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1900 if (!s->hrecv) {
1901 fprintf(stderr, "Failed CreateEvent\n");
1902 goto fail;
1903 }
1904
1905 snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
1906 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
1907 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
1908 PIPE_WAIT,
1909 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
1910 if (s->hcom == INVALID_HANDLE_VALUE) {
1911 fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
1912 s->hcom = NULL;
1913 goto fail;
1914 }
1915
1916 ZeroMemory(&ov, sizeof(ov));
1917 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
1918 ret = ConnectNamedPipe(s->hcom, &ov);
1919 if (ret) {
1920 fprintf(stderr, "Failed ConnectNamedPipe\n");
1921 goto fail;
1922 }
1923
1924 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
1925 if (!ret) {
1926 fprintf(stderr, "Failed GetOverlappedResult\n");
1927 if (ov.hEvent) {
1928 CloseHandle(ov.hEvent);
1929 ov.hEvent = NULL;
1930 }
1931 goto fail;
1932 }
1933
1934 if (ov.hEvent) {
1935 CloseHandle(ov.hEvent);
1936 ov.hEvent = NULL;
1937 }
1938 qemu_add_polling_cb(win_chr_pipe_poll, chr);
1939 return 0;
1940
1941 fail:
1942 win_chr_close(chr);
1943 return -1;
1944 }
1945
1946
1947 static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
1948 {
1949 const char *filename = opts->device;
1950 CharDriverState *chr;
1951 WinCharState *s;
1952
1953 chr = g_malloc0(sizeof(CharDriverState));
1954 s = g_malloc0(sizeof(WinCharState));
1955 chr->opaque = s;
1956 chr->chr_write = win_chr_write;
1957 chr->chr_close = win_chr_close;
1958
1959 if (win_chr_pipe_init(chr, filename) < 0) {
1960 g_free(s);
1961 g_free(chr);
1962 return NULL;
1963 }
1964 qemu_chr_be_generic_open(chr);
1965 return chr;
1966 }
1967
1968 static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
1969 {
1970 CharDriverState *chr;
1971 WinCharState *s;
1972
1973 chr = g_malloc0(sizeof(CharDriverState));
1974 s = g_malloc0(sizeof(WinCharState));
1975 s->hcom = fd_out;
1976 chr->opaque = s;
1977 chr->chr_write = win_chr_write;
1978 qemu_chr_be_generic_open(chr);
1979 return chr;
1980 }
1981
1982 static CharDriverState *qemu_chr_open_win_con(void)
1983 {
1984 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
1985 }
1986
1987 static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
1988 {
1989 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
1990 DWORD dwSize;
1991 int len1;
1992
1993 len1 = len;
1994
1995 while (len1 > 0) {
1996 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
1997 break;
1998 }
1999 buf += dwSize;
2000 len1 -= dwSize;
2001 }
2002
2003 return len - len1;
2004 }
2005
2006 static void win_stdio_wait_func(void *opaque)
2007 {
2008 CharDriverState *chr = opaque;
2009 WinStdioCharState *stdio = chr->opaque;
2010 INPUT_RECORD buf[4];
2011 int ret;
2012 DWORD dwSize;
2013 int i;
2014
2015 ret = ReadConsoleInput(stdio->hStdIn, buf, sizeof(buf) / sizeof(*buf),
2016 &dwSize);
2017
2018 if (!ret) {
2019 /* Avoid error storm */
2020 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2021 return;
2022 }
2023
2024 for (i = 0; i < dwSize; i++) {
2025 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
2026
2027 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
2028 int j;
2029 if (kev->uChar.AsciiChar != 0) {
2030 for (j = 0; j < kev->wRepeatCount; j++) {
2031 if (qemu_chr_be_can_write(chr)) {
2032 uint8_t c = kev->uChar.AsciiChar;
2033 qemu_chr_be_write(chr, &c, 1);
2034 }
2035 }
2036 }
2037 }
2038 }
2039 }
2040
2041 static DWORD WINAPI win_stdio_thread(LPVOID param)
2042 {
2043 CharDriverState *chr = param;
2044 WinStdioCharState *stdio = chr->opaque;
2045 int ret;
2046 DWORD dwSize;
2047
2048 while (1) {
2049
2050 /* Wait for one byte */
2051 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
2052
2053 /* Exit in case of error, continue if nothing read */
2054 if (!ret) {
2055 break;
2056 }
2057 if (!dwSize) {
2058 continue;
2059 }
2060
2061 /* Some terminal emulator returns \r\n for Enter, just pass \n */
2062 if (stdio->win_stdio_buf == '\r') {
2063 continue;
2064 }
2065
2066 /* Signal the main thread and wait until the byte was eaten */
2067 if (!SetEvent(stdio->hInputReadyEvent)) {
2068 break;
2069 }
2070 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
2071 != WAIT_OBJECT_0) {
2072 break;
2073 }
2074 }
2075
2076 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2077 return 0;
2078 }
2079
2080 static void win_stdio_thread_wait_func(void *opaque)
2081 {
2082 CharDriverState *chr = opaque;
2083 WinStdioCharState *stdio = chr->opaque;
2084
2085 if (qemu_chr_be_can_write(chr)) {
2086 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
2087 }
2088
2089 SetEvent(stdio->hInputDoneEvent);
2090 }
2091
2092 static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
2093 {
2094 WinStdioCharState *stdio = chr->opaque;
2095 DWORD dwMode = 0;
2096
2097 GetConsoleMode(stdio->hStdIn, &dwMode);
2098
2099 if (echo) {
2100 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
2101 } else {
2102 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
2103 }
2104 }
2105
2106 static void win_stdio_close(CharDriverState *chr)
2107 {
2108 WinStdioCharState *stdio = chr->opaque;
2109
2110 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
2111 CloseHandle(stdio->hInputReadyEvent);
2112 }
2113 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
2114 CloseHandle(stdio->hInputDoneEvent);
2115 }
2116 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
2117 TerminateThread(stdio->hInputThread, 0);
2118 }
2119
2120 g_free(chr->opaque);
2121 g_free(chr);
2122 }
2123
2124 static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
2125 {
2126 CharDriverState *chr;
2127 WinStdioCharState *stdio;
2128 DWORD dwMode;
2129 int is_console = 0;
2130
2131 chr = g_malloc0(sizeof(CharDriverState));
2132 stdio = g_malloc0(sizeof(WinStdioCharState));
2133
2134 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
2135 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
2136 fprintf(stderr, "cannot open stdio: invalid handle\n");
2137 exit(1);
2138 }
2139
2140 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
2141
2142 chr->opaque = stdio;
2143 chr->chr_write = win_stdio_write;
2144 chr->chr_close = win_stdio_close;
2145
2146 if (is_console) {
2147 if (qemu_add_wait_object(stdio->hStdIn,
2148 win_stdio_wait_func, chr)) {
2149 fprintf(stderr, "qemu_add_wait_object: failed\n");
2150 }
2151 } else {
2152 DWORD dwId;
2153
2154 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2155 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2156 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
2157 chr, 0, &dwId);
2158
2159 if (stdio->hInputThread == INVALID_HANDLE_VALUE
2160 || stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
2161 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
2162 fprintf(stderr, "cannot create stdio thread or event\n");
2163 exit(1);
2164 }
2165 if (qemu_add_wait_object(stdio->hInputReadyEvent,
2166 win_stdio_thread_wait_func, chr)) {
2167 fprintf(stderr, "qemu_add_wait_object: failed\n");
2168 }
2169 }
2170
2171 dwMode |= ENABLE_LINE_INPUT;
2172
2173 if (is_console) {
2174 /* set the terminal in raw mode */
2175 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2176 dwMode |= ENABLE_PROCESSED_INPUT;
2177 }
2178
2179 SetConsoleMode(stdio->hStdIn, dwMode);
2180
2181 chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
2182 qemu_chr_fe_set_echo(chr, false);
2183
2184 return chr;
2185 }
2186 #endif /* !_WIN32 */
2187
2188
2189 /***********************************************************/
2190 /* UDP Net console */
2191
2192 typedef struct {
2193 int fd;
2194 GIOChannel *chan;
2195 guint tag;
2196 uint8_t buf[READ_BUF_LEN];
2197 int bufcnt;
2198 int bufptr;
2199 int max_size;
2200 } NetCharDriver;
2201
2202 static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2203 {
2204 NetCharDriver *s = chr->opaque;
2205 gsize bytes_written;
2206 GIOStatus status;
2207
2208 status = g_io_channel_write_chars(s->chan, (const gchar *)buf, len, &bytes_written, NULL);
2209 if (status == G_IO_STATUS_EOF) {
2210 return 0;
2211 } else if (status != G_IO_STATUS_NORMAL) {
2212 return -1;
2213 }
2214
2215 return bytes_written;
2216 }
2217
2218 static int udp_chr_read_poll(void *opaque)
2219 {
2220 CharDriverState *chr = opaque;
2221 NetCharDriver *s = chr->opaque;
2222
2223 s->max_size = qemu_chr_be_can_write(chr);
2224
2225 /* If there were any stray characters in the queue process them
2226 * first
2227 */
2228 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
2229 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
2230 s->bufptr++;
2231 s->max_size = qemu_chr_be_can_write(chr);
2232 }
2233 return s->max_size;
2234 }
2235
2236 static gboolean udp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
2237 {
2238 CharDriverState *chr = opaque;
2239 NetCharDriver *s = chr->opaque;
2240 gsize bytes_read = 0;
2241 GIOStatus status;
2242
2243 if (s->max_size == 0)
2244 return FALSE;
2245 status = g_io_channel_read_chars(s->chan, (gchar *)s->buf, sizeof(s->buf),
2246 &bytes_read, NULL);
2247 s->bufcnt = bytes_read;
2248 s->bufptr = s->bufcnt;
2249 if (status != G_IO_STATUS_NORMAL) {
2250 return FALSE;
2251 }
2252
2253 s->bufptr = 0;
2254 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
2255 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
2256 s->bufptr++;
2257 s->max_size = qemu_chr_be_can_write(chr);
2258 }
2259
2260 return TRUE;
2261 }
2262
2263 static void udp_chr_update_read_handler(CharDriverState *chr)
2264 {
2265 NetCharDriver *s = chr->opaque;
2266
2267 if (s->tag) {
2268 g_source_remove(s->tag);
2269 s->tag = 0;
2270 }
2271
2272 if (s->chan) {
2273 s->tag = io_add_watch_poll(s->chan, udp_chr_read_poll, udp_chr_read, chr);
2274 }
2275 }
2276
2277 static void udp_chr_close(CharDriverState *chr)
2278 {
2279 NetCharDriver *s = chr->opaque;
2280 if (s->tag) {
2281 g_source_remove(s->tag);
2282 }
2283 if (s->chan) {
2284 g_io_channel_unref(s->chan);
2285 closesocket(s->fd);
2286 }
2287 g_free(s);
2288 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2289 }
2290
2291 static CharDriverState *qemu_chr_open_udp_fd(int fd)
2292 {
2293 CharDriverState *chr = NULL;
2294 NetCharDriver *s = NULL;
2295
2296 chr = g_malloc0(sizeof(CharDriverState));
2297 s = g_malloc0(sizeof(NetCharDriver));
2298
2299 s->fd = fd;
2300 s->chan = io_channel_from_socket(s->fd);
2301 s->bufcnt = 0;
2302 s->bufptr = 0;
2303 chr->opaque = s;
2304 chr->chr_write = udp_chr_write;
2305 chr->chr_update_read_handler = udp_chr_update_read_handler;
2306 chr->chr_close = udp_chr_close;
2307 return chr;
2308 }
2309
2310 static CharDriverState *qemu_chr_open_udp(QemuOpts *opts)
2311 {
2312 Error *local_err = NULL;
2313 int fd = -1;
2314
2315 fd = inet_dgram_opts(opts, &local_err);
2316 if (fd < 0) {
2317 return NULL;
2318 }
2319 return qemu_chr_open_udp_fd(fd);
2320 }
2321
2322 /***********************************************************/
2323 /* TCP Net console */
2324
2325 typedef struct {
2326
2327 GIOChannel *chan, *listen_chan;
2328 guint tag, listen_tag;
2329 int fd, listen_fd;
2330 int connected;
2331 int max_size;
2332 int do_telnetopt;
2333 int do_nodelay;
2334 int is_unix;
2335 int msgfd;
2336 } TCPCharDriver;
2337
2338 static gboolean tcp_chr_accept(GIOChannel *chan, GIOCondition cond, void *opaque);
2339
2340 static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2341 {
2342 TCPCharDriver *s = chr->opaque;
2343 if (s->connected) {
2344 return io_channel_send_all(s->chan, buf, len);
2345 } else {
2346 /* XXX: indicate an error ? */
2347 return len;
2348 }
2349 }
2350
2351 static int tcp_chr_read_poll(void *opaque)
2352 {
2353 CharDriverState *chr = opaque;
2354 TCPCharDriver *s = chr->opaque;
2355 if (!s->connected)
2356 return 0;
2357 s->max_size = qemu_chr_be_can_write(chr);
2358 return s->max_size;
2359 }
2360
2361 #define IAC 255
2362 #define IAC_BREAK 243
2363 static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
2364 TCPCharDriver *s,
2365 uint8_t *buf, int *size)
2366 {
2367 /* Handle any telnet client's basic IAC options to satisfy char by
2368 * char mode with no echo. All IAC options will be removed from
2369 * the buf and the do_telnetopt variable will be used to track the
2370 * state of the width of the IAC information.
2371 *
2372 * IAC commands come in sets of 3 bytes with the exception of the
2373 * "IAC BREAK" command and the double IAC.
2374 */
2375
2376 int i;
2377 int j = 0;
2378
2379 for (i = 0; i < *size; i++) {
2380 if (s->do_telnetopt > 1) {
2381 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2382 /* Double IAC means send an IAC */
2383 if (j != i)
2384 buf[j] = buf[i];
2385 j++;
2386 s->do_telnetopt = 1;
2387 } else {
2388 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2389 /* Handle IAC break commands by sending a serial break */
2390 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
2391 s->do_telnetopt++;
2392 }
2393 s->do_telnetopt++;
2394 }
2395 if (s->do_telnetopt >= 4) {
2396 s->do_telnetopt = 1;
2397 }
2398 } else {
2399 if ((unsigned char)buf[i] == IAC) {
2400 s->do_telnetopt = 2;
2401 } else {
2402 if (j != i)
2403 buf[j] = buf[i];
2404 j++;
2405 }
2406 }
2407 }
2408 *size = j;
2409 }
2410
2411 static int tcp_get_msgfd(CharDriverState *chr)
2412 {
2413 TCPCharDriver *s = chr->opaque;
2414 int fd = s->msgfd;
2415 s->msgfd = -1;
2416 return fd;
2417 }
2418
2419 #ifndef _WIN32
2420 static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
2421 {
2422 TCPCharDriver *s = chr->opaque;
2423 struct cmsghdr *cmsg;
2424
2425 for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
2426 int fd;
2427
2428 if (cmsg->cmsg_len != CMSG_LEN(sizeof(int)) ||
2429 cmsg->cmsg_level != SOL_SOCKET ||
2430 cmsg->cmsg_type != SCM_RIGHTS)
2431 continue;
2432
2433 fd = *((int *)CMSG_DATA(cmsg));
2434 if (fd < 0)
2435 continue;
2436
2437 #ifndef MSG_CMSG_CLOEXEC
2438 qemu_set_cloexec(fd);
2439 #endif
2440 if (s->msgfd != -1)
2441 close(s->msgfd);
2442 s->msgfd = fd;
2443 }
2444 }
2445
2446 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2447 {
2448 TCPCharDriver *s = chr->opaque;
2449 struct msghdr msg = { NULL, };
2450 struct iovec iov[1];
2451 union {
2452 struct cmsghdr cmsg;
2453 char control[CMSG_SPACE(sizeof(int))];
2454 } msg_control;
2455 int flags = 0;
2456 ssize_t ret;
2457
2458 iov[0].iov_base = buf;
2459 iov[0].iov_len = len;
2460
2461 msg.msg_iov = iov;
2462 msg.msg_iovlen = 1;
2463 msg.msg_control = &msg_control;
2464 msg.msg_controllen = sizeof(msg_control);
2465
2466 #ifdef MSG_CMSG_CLOEXEC
2467 flags |= MSG_CMSG_CLOEXEC;
2468 #endif
2469 ret = recvmsg(s->fd, &msg, flags);
2470 if (ret > 0 && s->is_unix) {
2471 unix_process_msgfd(chr, &msg);
2472 }
2473
2474 return ret;
2475 }
2476 #else
2477 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2478 {
2479 TCPCharDriver *s = chr->opaque;
2480 return qemu_recv(s->fd, buf, len, 0);
2481 }
2482 #endif
2483
2484 static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
2485 {
2486 TCPCharDriver *s = chr->opaque;
2487 return g_io_create_watch(s->chan, cond);
2488 }
2489
2490 static gboolean tcp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
2491 {
2492 CharDriverState *chr = opaque;
2493 TCPCharDriver *s = chr->opaque;
2494 uint8_t buf[READ_BUF_LEN];
2495 int len, size;
2496
2497 if (!s->connected || s->max_size <= 0) {
2498 return FALSE;
2499 }
2500 len = sizeof(buf);
2501 if (len > s->max_size)
2502 len = s->max_size;
2503 size = tcp_chr_recv(chr, (void *)buf, len);
2504 if (size == 0) {
2505 /* connection closed */
2506 s->connected = 0;
2507 if (s->listen_chan) {
2508 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr);
2509 }
2510 g_source_remove(s->tag);
2511 s->tag = 0;
2512 g_io_channel_unref(s->chan);
2513 s->chan = NULL;
2514 closesocket(s->fd);
2515 s->fd = -1;
2516 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2517 } else if (size > 0) {
2518 if (s->do_telnetopt)
2519 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2520 if (size > 0)
2521 qemu_chr_be_write(chr, buf, size);
2522 }
2523
2524 return TRUE;
2525 }
2526
2527 #ifndef _WIN32
2528 CharDriverState *qemu_chr_open_eventfd(int eventfd)
2529 {
2530 return qemu_chr_open_fd(eventfd, eventfd);
2531 }
2532 #endif
2533
2534 static void tcp_chr_connect(void *opaque)
2535 {
2536 CharDriverState *chr = opaque;
2537 TCPCharDriver *s = chr->opaque;
2538
2539 s->connected = 1;
2540 if (s->chan) {
2541 s->tag = io_add_watch_poll(s->chan, tcp_chr_read_poll, tcp_chr_read, chr);
2542 }
2543 qemu_chr_be_generic_open(chr);
2544 }
2545
2546 #define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
2547 static void tcp_chr_telnet_init(int fd)
2548 {
2549 char buf[3];
2550 /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
2551 IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2552 send(fd, (char *)buf, 3, 0);
2553 IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2554 send(fd, (char *)buf, 3, 0);
2555 IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2556 send(fd, (char *)buf, 3, 0);
2557 IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2558 send(fd, (char *)buf, 3, 0);
2559 }
2560
2561 static int tcp_chr_add_client(CharDriverState *chr, int fd)
2562 {
2563 TCPCharDriver *s = chr->opaque;
2564 if (s->fd != -1)
2565 return -1;
2566
2567 socket_set_nonblock(fd);
2568 if (s->do_nodelay)
2569 socket_set_nodelay(fd);
2570 s->fd = fd;
2571 s->chan = io_channel_from_socket(fd);
2572 g_source_remove(s->listen_tag);
2573 s->listen_tag = 0;
2574 tcp_chr_connect(chr);
2575
2576 return 0;
2577 }
2578
2579 static gboolean tcp_chr_accept(GIOChannel *channel, GIOCondition cond, void *opaque)
2580 {
2581 CharDriverState *chr = opaque;
2582 TCPCharDriver *s = chr->opaque;
2583 struct sockaddr_in saddr;
2584 #ifndef _WIN32
2585 struct sockaddr_un uaddr;
2586 #endif
2587 struct sockaddr *addr;
2588 socklen_t len;
2589 int fd;
2590
2591 for(;;) {
2592 #ifndef _WIN32
2593 if (s->is_unix) {
2594 len = sizeof(uaddr);
2595 addr = (struct sockaddr *)&uaddr;
2596 } else
2597 #endif
2598 {
2599 len = sizeof(saddr);
2600 addr = (struct sockaddr *)&saddr;
2601 }
2602 fd = qemu_accept(s->listen_fd, addr, &len);
2603 if (fd < 0 && errno != EINTR) {
2604 return FALSE;
2605 } else if (fd >= 0) {
2606 if (s->do_telnetopt)
2607 tcp_chr_telnet_init(fd);
2608 break;
2609 }
2610 }
2611 if (tcp_chr_add_client(chr, fd) < 0)
2612 close(fd);
2613
2614 return TRUE;
2615 }
2616
2617 static void tcp_chr_close(CharDriverState *chr)
2618 {
2619 TCPCharDriver *s = chr->opaque;
2620 if (s->fd >= 0) {
2621 if (s->tag) {
2622 g_source_remove(s->tag);
2623 }
2624 if (s->chan) {
2625 g_io_channel_unref(s->chan);
2626 }
2627 closesocket(s->fd);
2628 }
2629 if (s->listen_fd >= 0) {
2630 if (s->listen_tag) {
2631 g_source_remove(s->listen_tag);
2632 }
2633 if (s->listen_chan) {
2634 g_io_channel_unref(s->listen_chan);
2635 }
2636 closesocket(s->listen_fd);
2637 }
2638 g_free(s);
2639 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2640 }
2641
2642 static CharDriverState *qemu_chr_open_socket_fd(int fd, bool do_nodelay,
2643 bool is_listen, bool is_telnet,
2644 bool is_waitconnect,
2645 Error **errp)
2646 {
2647 CharDriverState *chr = NULL;
2648 TCPCharDriver *s = NULL;
2649 char host[NI_MAXHOST], serv[NI_MAXSERV];
2650 const char *left = "", *right = "";
2651 struct sockaddr_storage ss;
2652 socklen_t ss_len = sizeof(ss);
2653
2654 memset(&ss, 0, ss_len);
2655 if (getsockname(fd, (struct sockaddr *) &ss, &ss_len) != 0) {
2656 error_setg(errp, "getsockname: %s", strerror(errno));
2657 return NULL;
2658 }
2659
2660 chr = g_malloc0(sizeof(CharDriverState));
2661 s = g_malloc0(sizeof(TCPCharDriver));
2662
2663 s->connected = 0;
2664 s->fd = -1;
2665 s->listen_fd = -1;
2666 s->msgfd = -1;
2667
2668 chr->filename = g_malloc(256);
2669 switch (ss.ss_family) {
2670 #ifndef _WIN32
2671 case AF_UNIX:
2672 s->is_unix = 1;
2673 snprintf(chr->filename, 256, "unix:%s%s",
2674 ((struct sockaddr_un *)(&ss))->sun_path,
2675 is_listen ? ",server" : "");
2676 break;
2677 #endif
2678 case AF_INET6:
2679 left = "[";
2680 right = "]";
2681 /* fall through */
2682 case AF_INET:
2683 s->do_nodelay = do_nodelay;
2684 getnameinfo((struct sockaddr *) &ss, ss_len, host, sizeof(host),
2685 serv, sizeof(serv), NI_NUMERICHOST | NI_NUMERICSERV);
2686 snprintf(chr->filename, 256, "%s:%s%s%s:%s%s",
2687 is_telnet ? "telnet" : "tcp",
2688 left, host, right, serv,
2689 is_listen ? ",server" : "");
2690 break;
2691 }
2692
2693 chr->opaque = s;
2694 chr->chr_write = tcp_chr_write;
2695 chr->chr_close = tcp_chr_close;
2696 chr->get_msgfd = tcp_get_msgfd;
2697 chr->chr_add_client = tcp_chr_add_client;
2698 chr->chr_add_watch = tcp_chr_add_watch;
2699
2700 if (is_listen) {
2701 s->listen_fd = fd;
2702 s->listen_chan = io_channel_from_socket(s->listen_fd);
2703 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr);
2704 if (is_telnet) {
2705 s->do_telnetopt = 1;
2706 }
2707 } else {
2708 s->connected = 1;
2709 s->fd = fd;
2710 socket_set_nodelay(fd);
2711 s->chan = io_channel_from_socket(s->fd);
2712 tcp_chr_connect(chr);
2713 }
2714
2715 if (is_listen && is_waitconnect) {
2716 printf("QEMU waiting for connection on: %s\n",
2717 chr->filename);
2718 tcp_chr_accept(s->listen_chan, G_IO_IN, chr);
2719 socket_set_nonblock(s->listen_fd);
2720 }
2721 return chr;
2722 }
2723
2724 static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
2725 {
2726 CharDriverState *chr = NULL;
2727 Error *local_err = NULL;
2728 int fd = -1;
2729 int is_listen;
2730 int is_waitconnect;
2731 int do_nodelay;
2732 int is_unix;
2733 int is_telnet;
2734
2735 is_listen = qemu_opt_get_bool(opts, "server", 0);
2736 is_waitconnect = qemu_opt_get_bool(opts, "wait", 1);
2737 is_telnet = qemu_opt_get_bool(opts, "telnet", 0);
2738 do_nodelay = !qemu_opt_get_bool(opts, "delay", 1);
2739 is_unix = qemu_opt_get(opts, "path") != NULL;
2740 if (!is_listen)
2741 is_waitconnect = 0;
2742
2743 if (is_unix) {
2744 if (is_listen) {
2745 fd = unix_listen_opts(opts, &local_err);
2746 } else {
2747 fd = unix_connect_opts(opts, &local_err, NULL, NULL);
2748 }
2749 } else {
2750 if (is_listen) {
2751 fd = inet_listen_opts(opts, 0, &local_err);
2752 } else {
2753 fd = inet_connect_opts(opts, &local_err, NULL, NULL);
2754 }
2755 }
2756 if (fd < 0) {
2757 goto fail;
2758 }
2759
2760 if (!is_waitconnect)
2761 socket_set_nonblock(fd);
2762
2763 chr = qemu_chr_open_socket_fd(fd, do_nodelay, is_listen, is_telnet,
2764 is_waitconnect, &local_err);
2765 if (error_is_set(&local_err)) {
2766 goto fail;
2767 }
2768 return chr;
2769
2770
2771 fail:
2772 if (local_err) {
2773 qerror_report_err(local_err);
2774 error_free(local_err);
2775 }
2776 if (fd >= 0) {
2777 closesocket(fd);
2778 }
2779 if (chr) {
2780 g_free(chr->opaque);
2781 g_free(chr);
2782 }
2783 return NULL;
2784 }
2785
2786 /***********************************************************/
2787 /* Memory chardev */
2788 typedef struct {
2789 size_t outbuf_size;
2790 size_t outbuf_capacity;
2791 uint8_t *outbuf;
2792 } MemoryDriver;
2793
2794 static int mem_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2795 {
2796 MemoryDriver *d = chr->opaque;
2797
2798 /* TODO: the QString implementation has the same code, we should
2799 * introduce a generic way to do this in cutils.c */
2800 if (d->outbuf_capacity < d->outbuf_size + len) {
2801 /* grow outbuf */
2802 d->outbuf_capacity += len;
2803 d->outbuf_capacity *= 2;
2804 d->outbuf = g_realloc(d->outbuf, d->outbuf_capacity);
2805 }
2806
2807 memcpy(d->outbuf + d->outbuf_size, buf, len);
2808 d->outbuf_size += len;
2809
2810 return len;
2811 }
2812
2813 void qemu_chr_init_mem(CharDriverState *chr)
2814 {
2815 MemoryDriver *d;
2816
2817 d = g_malloc(sizeof(*d));
2818 d->outbuf_size = 0;
2819 d->outbuf_capacity = 4096;
2820 d->outbuf = g_malloc0(d->outbuf_capacity);
2821
2822 memset(chr, 0, sizeof(*chr));
2823 chr->opaque = d;
2824 chr->chr_write = mem_chr_write;
2825 }
2826
2827 QString *qemu_chr_mem_to_qs(CharDriverState *chr)
2828 {
2829 MemoryDriver *d = chr->opaque;
2830 return qstring_from_substr((char *) d->outbuf, 0, d->outbuf_size - 1);
2831 }
2832
2833 /* NOTE: this driver can not be closed with qemu_chr_delete()! */
2834 void qemu_chr_close_mem(CharDriverState *chr)
2835 {
2836 MemoryDriver *d = chr->opaque;
2837
2838 g_free(d->outbuf);
2839 g_free(chr->opaque);
2840 chr->opaque = NULL;
2841 chr->chr_write = NULL;
2842 }
2843
2844 size_t qemu_chr_mem_osize(const CharDriverState *chr)
2845 {
2846 const MemoryDriver *d = chr->opaque;
2847 return d->outbuf_size;
2848 }
2849
2850 /*********************************************************/
2851 /* Ring buffer chardev */
2852
2853 typedef struct {
2854 size_t size;
2855 size_t prod;
2856 size_t cons;
2857 uint8_t *cbuf;
2858 } RingBufCharDriver;
2859
2860 static size_t ringbuf_count(const CharDriverState *chr)
2861 {
2862 const RingBufCharDriver *d = chr->opaque;
2863
2864 return d->prod - d->cons;
2865 }
2866
2867 static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2868 {
2869 RingBufCharDriver *d = chr->opaque;
2870 int i;
2871
2872 if (!buf || (len < 0)) {
2873 return -1;
2874 }
2875
2876 for (i = 0; i < len; i++ ) {
2877 d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
2878 if (d->prod - d->cons > d->size) {
2879 d->cons = d->prod - d->size;
2880 }
2881 }
2882
2883 return 0;
2884 }
2885
2886 static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len)
2887 {
2888 RingBufCharDriver *d = chr->opaque;
2889 int i;
2890
2891 for (i = 0; i < len && d->cons != d->prod; i++) {
2892 buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
2893 }
2894
2895 return i;
2896 }
2897
2898 static void ringbuf_chr_close(struct CharDriverState *chr)
2899 {
2900 RingBufCharDriver *d = chr->opaque;
2901
2902 g_free(d->cbuf);
2903 g_free(d);
2904 chr->opaque = NULL;
2905 }
2906
2907 static CharDriverState *qemu_chr_open_ringbuf(ChardevRingbuf *opts,
2908 Error **errp)
2909 {
2910 CharDriverState *chr;
2911 RingBufCharDriver *d;
2912
2913 chr = g_malloc0(sizeof(CharDriverState));
2914 d = g_malloc(sizeof(*d));
2915
2916 d->size = opts->has_size ? opts->size : 65536;
2917
2918 /* The size must be power of 2 */
2919 if (d->size & (d->size - 1)) {
2920 error_setg(errp, "size of ringbuf chardev must be power of two");
2921 goto fail;
2922 }
2923
2924 d->prod = 0;
2925 d->cons = 0;
2926 d->cbuf = g_malloc0(d->size);
2927
2928 chr->opaque = d;
2929 chr->chr_write = ringbuf_chr_write;
2930 chr->chr_close = ringbuf_chr_close;
2931
2932 return chr;
2933
2934 fail:
2935 g_free(d);
2936 g_free(chr);
2937 return NULL;
2938 }
2939
2940 static bool chr_is_ringbuf(const CharDriverState *chr)
2941 {
2942 return chr->chr_write == ringbuf_chr_write;
2943 }
2944
2945 void qmp_ringbuf_write(const char *device, const char *data,
2946 bool has_format, enum DataFormat format,
2947 Error **errp)
2948 {
2949 CharDriverState *chr;
2950 const uint8_t *write_data;
2951 int ret;
2952 size_t write_count;
2953
2954 chr = qemu_chr_find(device);
2955 if (!chr) {
2956 error_setg(errp, "Device '%s' not found", device);
2957 return;
2958 }
2959
2960 if (!chr_is_ringbuf(chr)) {
2961 error_setg(errp,"%s is not a ringbuf device", device);
2962 return;
2963 }
2964
2965 if (has_format && (format == DATA_FORMAT_BASE64)) {
2966 write_data = g_base64_decode(data, &write_count);
2967 } else {
2968 write_data = (uint8_t *)data;
2969 write_count = strlen(data);
2970 }
2971
2972 ret = ringbuf_chr_write(chr, write_data, write_count);
2973
2974 if (write_data != (uint8_t *)data) {
2975 g_free((void *)write_data);
2976 }
2977
2978 if (ret < 0) {
2979 error_setg(errp, "Failed to write to device %s", device);
2980 return;
2981 }
2982 }
2983
2984 char *qmp_ringbuf_read(const char *device, int64_t size,
2985 bool has_format, enum DataFormat format,
2986 Error **errp)
2987 {
2988 CharDriverState *chr;
2989 uint8_t *read_data;
2990 size_t count;
2991 char *data;
2992
2993 chr = qemu_chr_find(device);
2994 if (!chr) {
2995 error_setg(errp, "Device '%s' not found", device);
2996 return NULL;
2997 }
2998
2999 if (!chr_is_ringbuf(chr)) {
3000 error_setg(errp,"%s is not a ringbuf device", device);
3001 return NULL;
3002 }
3003
3004 if (size <= 0) {
3005 error_setg(errp, "size must be greater than zero");
3006 return NULL;
3007 }
3008
3009 count = ringbuf_count(chr);
3010 size = size > count ? count : size;
3011 read_data = g_malloc(size + 1);
3012
3013 ringbuf_chr_read(chr, read_data, size);
3014
3015 if (has_format && (format == DATA_FORMAT_BASE64)) {
3016 data = g_base64_encode(read_data, size);
3017 g_free(read_data);
3018 } else {
3019 /*
3020 * FIXME should read only complete, valid UTF-8 characters up
3021 * to @size bytes. Invalid sequences should be replaced by a
3022 * suitable replacement character. Except when (and only
3023 * when) ring buffer lost characters since last read, initial
3024 * continuation characters should be dropped.
3025 */
3026 read_data[size] = 0;
3027 data = (char *)read_data;
3028 }
3029
3030 return data;
3031 }
3032
3033 QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
3034 {
3035 char host[65], port[33], width[8], height[8];
3036 int pos;
3037 const char *p;
3038 QemuOpts *opts;
3039 Error *local_err = NULL;
3040
3041 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
3042 if (error_is_set(&local_err)) {
3043 qerror_report_err(local_err);
3044 error_free(local_err);
3045 return NULL;
3046 }
3047
3048 if (strstart(filename, "mon:", &p)) {
3049 filename = p;
3050 qemu_opt_set(opts, "mux", "on");
3051 }
3052
3053 if (strcmp(filename, "null") == 0 ||
3054 strcmp(filename, "pty") == 0 ||
3055 strcmp(filename, "msmouse") == 0 ||
3056 strcmp(filename, "braille") == 0 ||
3057 strcmp(filename, "stdio") == 0) {
3058 qemu_opt_set(opts, "backend", filename);
3059 return opts;
3060 }
3061 if (strstart(filename, "vc", &p)) {
3062 qemu_opt_set(opts, "backend", "vc");
3063 if (*p == ':') {
3064 if (sscanf(p+1, "%8[0-9]x%8[0-9]", width, height) == 2) {
3065 /* pixels */
3066 qemu_opt_set(opts, "width", width);
3067 qemu_opt_set(opts, "height", height);
3068 } else if (sscanf(p+1, "%8[0-9]Cx%8[0-9]C", width, height) == 2) {
3069 /* chars */
3070 qemu_opt_set(opts, "cols", width);
3071 qemu_opt_set(opts, "rows", height);
3072 } else {
3073 goto fail;
3074 }
3075 }
3076 return opts;
3077 }
3078 if (strcmp(filename, "con:") == 0) {
3079 qemu_opt_set(opts, "backend", "console");
3080 return opts;
3081 }
3082 if (strstart(filename, "COM", NULL)) {
3083 qemu_opt_set(opts, "backend", "serial");
3084 qemu_opt_set(opts, "path", filename);
3085 return opts;
3086 }
3087 if (strstart(filename, "file:", &p)) {
3088 qemu_opt_set(opts, "backend", "file");
3089 qemu_opt_set(opts, "path", p);
3090 return opts;
3091 }
3092 if (strstart(filename, "pipe:", &p)) {
3093 qemu_opt_set(opts, "backend", "pipe");
3094 qemu_opt_set(opts, "path", p);
3095 return opts;
3096 }
3097 if (strstart(filename, "tcp:", &p) ||
3098 strstart(filename, "telnet:", &p)) {
3099 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3100 host[0] = 0;
3101 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
3102 goto fail;
3103 }
3104 qemu_opt_set(opts, "backend", "socket");
3105 qemu_opt_set(opts, "host", host);
3106 qemu_opt_set(opts, "port", port);
3107 if (p[pos] == ',') {
3108 if (qemu_opts_do_parse(opts, p+pos+1, NULL) != 0)
3109 goto fail;
3110 }
3111 if (strstart(filename, "telnet:", &p))
3112 qemu_opt_set(opts, "telnet", "on");
3113 return opts;
3114 }
3115 if (strstart(filename, "udp:", &p)) {
3116 qemu_opt_set(opts, "backend", "udp");
3117 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
3118 host[0] = 0;
3119 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
3120 goto fail;
3121 }
3122 }
3123 qemu_opt_set(opts, "host", host);
3124 qemu_opt_set(opts, "port", port);
3125 if (p[pos] == '@') {
3126 p += pos + 1;
3127 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3128 host[0] = 0;
3129 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
3130 goto fail;
3131 }
3132 }
3133 qemu_opt_set(opts, "localaddr", host);
3134 qemu_opt_set(opts, "localport", port);
3135 }
3136 return opts;
3137 }
3138 if (strstart(filename, "unix:", &p)) {
3139 qemu_opt_set(opts, "backend", "socket");
3140 if (qemu_opts_do_parse(opts, p, "path") != 0)
3141 goto fail;
3142 return opts;
3143 }
3144 if (strstart(filename, "/dev/parport", NULL) ||
3145 strstart(filename, "/dev/ppi", NULL)) {
3146 qemu_opt_set(opts, "backend", "parport");
3147 qemu_opt_set(opts, "path", filename);
3148 return opts;
3149 }
3150 if (strstart(filename, "/dev/", NULL)) {
3151 qemu_opt_set(opts, "backend", "tty");
3152 qemu_opt_set(opts, "path", filename);
3153 return opts;
3154 }
3155
3156 fail:
3157 qemu_opts_del(opts);
3158 return NULL;
3159 }
3160
3161 static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
3162 Error **errp)
3163 {
3164 const char *path = qemu_opt_get(opts, "path");
3165
3166 if (path == NULL) {
3167 error_setg(errp, "chardev: file: no filename given");
3168 return;
3169 }
3170 backend->file = g_new0(ChardevFile, 1);
3171 backend->file->out = g_strdup(path);
3172 }
3173
3174 static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
3175 Error **errp)
3176 {
3177 backend->stdio = g_new0(ChardevStdio, 1);
3178 backend->stdio->has_signal = true;
3179 backend->stdio->signal =
3180 qemu_opt_get_bool(opts, "signal", display_type != DT_NOGRAPHIC);
3181 }
3182
3183 static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
3184 Error **errp)
3185 {
3186 const char *device = qemu_opt_get(opts, "path");
3187
3188 if (device == NULL) {
3189 error_setg(errp, "chardev: serial/tty: no device path given");
3190 return;
3191 }
3192 backend->serial = g_new0(ChardevHostdev, 1);
3193 backend->serial->device = g_strdup(device);
3194 }
3195
3196 static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
3197 Error **errp)
3198 {
3199 const char *device = qemu_opt_get(opts, "path");
3200
3201 if (device == NULL) {
3202 error_setg(errp, "chardev: parallel: no device path given");
3203 return;
3204 }
3205 backend->parallel = g_new0(ChardevHostdev, 1);
3206 backend->parallel->device = g_strdup(device);
3207 }
3208
3209 static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
3210 Error **errp)
3211 {
3212 const char *device = qemu_opt_get(opts, "path");
3213
3214 if (device == NULL) {
3215 error_setg(errp, "chardev: pipe: no device path given");
3216 return;
3217 }
3218 backend->pipe = g_new0(ChardevHostdev, 1);
3219 backend->pipe->device = g_strdup(device);
3220 }
3221
3222 static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
3223 Error **errp)
3224 {
3225 int val;
3226
3227 backend->memory = g_new0(ChardevRingbuf, 1);
3228
3229 val = qemu_opt_get_number(opts, "size", 0);
3230 if (val != 0) {
3231 backend->memory->has_size = true;
3232 backend->memory->size = val;
3233 }
3234 }
3235
3236 typedef struct CharDriver {
3237 const char *name;
3238 /* old, pre qapi */
3239 CharDriverState *(*open)(QemuOpts *opts);
3240 /* new, qapi-based */
3241 int kind;
3242 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
3243 } CharDriver;
3244
3245 static GSList *backends;
3246
3247 void register_char_driver(const char *name, CharDriverState *(*open)(QemuOpts *))
3248 {
3249 CharDriver *s;
3250
3251 s = g_malloc0(sizeof(*s));
3252 s->name = g_strdup(name);
3253 s->open = open;
3254
3255 backends = g_slist_append(backends, s);
3256 }
3257
3258 void register_char_driver_qapi(const char *name, int kind,
3259 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp))
3260 {
3261 CharDriver *s;
3262
3263 s = g_malloc0(sizeof(*s));
3264 s->name = g_strdup(name);
3265 s->kind = kind;
3266 s->parse = parse;
3267
3268 backends = g_slist_append(backends, s);
3269 }
3270
3271 CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
3272 void (*init)(struct CharDriverState *s),
3273 Error **errp)
3274 {
3275 CharDriver *cd;
3276 CharDriverState *chr;
3277 GSList *i;
3278
3279 if (qemu_opts_id(opts) == NULL) {
3280 error_setg(errp, "chardev: no id specified");
3281 goto err;
3282 }
3283
3284 if (qemu_opt_get(opts, "backend") == NULL) {
3285 error_setg(errp, "chardev: \"%s\" missing backend",
3286 qemu_opts_id(opts));
3287 goto err;
3288 }
3289 for (i = backends; i; i = i->next) {
3290 cd = i->data;
3291
3292 if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) {
3293 break;
3294 }
3295 }
3296 if (i == NULL) {
3297 error_setg(errp, "chardev: backend \"%s\" not found",
3298 qemu_opt_get(opts, "backend"));
3299 return NULL;
3300 }
3301
3302 if (!cd->open) {
3303 /* using new, qapi init */
3304 ChardevBackend *backend = g_new0(ChardevBackend, 1);
3305 ChardevReturn *ret = NULL;
3306 const char *id = qemu_opts_id(opts);
3307 const char *bid = NULL;
3308
3309 if (qemu_opt_get_bool(opts, "mux", 0)) {
3310 bid = g_strdup_printf("%s-base", id);
3311 }
3312
3313 chr = NULL;
3314 backend->kind = cd->kind;
3315 if (cd->parse) {
3316 cd->parse(opts, backend, errp);
3317 if (error_is_set(errp)) {
3318 goto qapi_out;
3319 }
3320 }
3321 ret = qmp_chardev_add(bid ? bid : id, backend, errp);
3322 if (error_is_set(errp)) {
3323 goto qapi_out;
3324 }
3325
3326 if (bid) {
3327 qapi_free_ChardevBackend(backend);
3328 qapi_free_ChardevReturn(ret);
3329 backend = g_new0(ChardevBackend, 1);
3330 backend->mux = g_new0(ChardevMux, 1);
3331 backend->kind = CHARDEV_BACKEND_KIND_MUX;
3332 backend->mux->chardev = g_strdup(bid);
3333 ret = qmp_chardev_add(id, backend, errp);
3334 if (error_is_set(errp)) {
3335 goto qapi_out;
3336 }
3337 }
3338
3339 chr = qemu_chr_find(id);
3340
3341 qapi_out:
3342 qapi_free_ChardevBackend(backend);
3343 qapi_free_ChardevReturn(ret);
3344 return chr;
3345 }
3346
3347 chr = cd->open(opts);
3348 if (!chr) {
3349 error_setg(errp, "chardev: opening backend \"%s\" failed",
3350 qemu_opt_get(opts, "backend"));
3351 goto err;
3352 }
3353
3354 if (!chr->filename)
3355 chr->filename = g_strdup(qemu_opt_get(opts, "backend"));
3356 chr->init = init;
3357 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3358
3359 if (qemu_opt_get_bool(opts, "mux", 0)) {
3360 CharDriverState *base = chr;
3361 int len = strlen(qemu_opts_id(opts)) + 6;
3362 base->label = g_malloc(len);
3363 snprintf(base->label, len, "%s-base", qemu_opts_id(opts));
3364 chr = qemu_chr_open_mux(base);
3365 chr->filename = base->filename;
3366 chr->avail_connections = MAX_MUX;
3367 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3368 } else {
3369 chr->avail_connections = 1;
3370 }
3371 chr->label = g_strdup(qemu_opts_id(opts));
3372 chr->opts = opts;
3373 return chr;
3374
3375 err:
3376 qemu_opts_del(opts);
3377 return NULL;
3378 }
3379
3380 CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
3381 {
3382 const char *p;
3383 CharDriverState *chr;
3384 QemuOpts *opts;
3385 Error *err = NULL;
3386
3387 if (strstart(filename, "chardev:", &p)) {
3388 return qemu_chr_find(p);
3389 }
3390
3391 opts = qemu_chr_parse_compat(label, filename);
3392 if (!opts)
3393 return NULL;
3394
3395 chr = qemu_chr_new_from_opts(opts, init, &err);
3396 if (error_is_set(&err)) {
3397 fprintf(stderr, "%s\n", error_get_pretty(err));
3398 error_free(err);
3399 }
3400 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
3401 monitor_init(chr, MONITOR_USE_READLINE);
3402 }
3403 return chr;
3404 }
3405
3406 void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo)
3407 {
3408 if (chr->chr_set_echo) {
3409 chr->chr_set_echo(chr, echo);
3410 }
3411 }
3412
3413 void qemu_chr_fe_open(struct CharDriverState *chr)
3414 {
3415 if (chr->fe_open) {
3416 return;
3417 }
3418 chr->fe_open = 1;
3419 if (chr->chr_guest_open) {
3420 chr->chr_guest_open(chr);
3421 }
3422 }
3423
3424 void qemu_chr_fe_close(struct CharDriverState *chr)
3425 {
3426 if (!chr->fe_open) {
3427 return;
3428 }
3429 chr->fe_open = 0;
3430 if (chr->chr_guest_close) {
3431 chr->chr_guest_close(chr);
3432 }
3433 }
3434
3435 int qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond,
3436 GIOFunc func, void *user_data)
3437 {
3438 GSource *src;
3439 guint tag;
3440
3441 if (s->chr_add_watch == NULL) {
3442 return -ENOSYS;
3443 }
3444
3445 src = s->chr_add_watch(s, cond);
3446 g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
3447 tag = g_source_attach(src, NULL);
3448 g_source_unref(src);
3449
3450 return tag;
3451 }
3452
3453 void qemu_chr_delete(CharDriverState *chr)
3454 {
3455 QTAILQ_REMOVE(&chardevs, chr, next);
3456 if (chr->chr_close) {
3457 chr->chr_close(chr);
3458 }
3459 g_free(chr->filename);
3460 g_free(chr->label);
3461 if (chr->opts) {
3462 qemu_opts_del(chr->opts);
3463 }
3464 g_free(chr);
3465 }
3466
3467 ChardevInfoList *qmp_query_chardev(Error **errp)
3468 {
3469 ChardevInfoList *chr_list = NULL;
3470 CharDriverState *chr;
3471
3472 QTAILQ_FOREACH(chr, &chardevs, next) {
3473 ChardevInfoList *info = g_malloc0(sizeof(*info));
3474 info->value = g_malloc0(sizeof(*info->value));
3475 info->value->label = g_strdup(chr->label);
3476 info->value->filename = g_strdup(chr->filename);
3477
3478 info->next = chr_list;
3479 chr_list = info;
3480 }
3481
3482 return chr_list;
3483 }
3484
3485 CharDriverState *qemu_chr_find(const char *name)
3486 {
3487 CharDriverState *chr;
3488
3489 QTAILQ_FOREACH(chr, &chardevs, next) {
3490 if (strcmp(chr->label, name) != 0)
3491 continue;
3492 return chr;
3493 }
3494 return NULL;
3495 }
3496
3497 /* Get a character (serial) device interface. */
3498 CharDriverState *qemu_char_get_next_serial(void)
3499 {
3500 static int next_serial;
3501
3502 /* FIXME: This function needs to go away: use chardev properties! */
3503 return serial_hds[next_serial++];
3504 }
3505
3506 QemuOptsList qemu_chardev_opts = {
3507 .name = "chardev",
3508 .implied_opt_name = "backend",
3509 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
3510 .desc = {
3511 {
3512 .name = "backend",
3513 .type = QEMU_OPT_STRING,
3514 },{
3515 .name = "path",
3516 .type = QEMU_OPT_STRING,
3517 },{
3518 .name = "host",
3519 .type = QEMU_OPT_STRING,
3520 },{
3521 .name = "port",
3522 .type = QEMU_OPT_STRING,
3523 },{
3524 .name = "localaddr",
3525 .type = QEMU_OPT_STRING,
3526 },{
3527 .name = "localport",
3528 .type = QEMU_OPT_STRING,
3529 },{
3530 .name = "to",
3531 .type = QEMU_OPT_NUMBER,
3532 },{
3533 .name = "ipv4",
3534 .type = QEMU_OPT_BOOL,
3535 },{
3536 .name = "ipv6",
3537 .type = QEMU_OPT_BOOL,
3538 },{
3539 .name = "wait",
3540 .type = QEMU_OPT_BOOL,
3541 },{
3542 .name = "server",
3543 .type = QEMU_OPT_BOOL,
3544 },{
3545 .name = "delay",
3546 .type = QEMU_OPT_BOOL,
3547 },{
3548 .name = "telnet",
3549 .type = QEMU_OPT_BOOL,
3550 },{
3551 .name = "width",
3552 .type = QEMU_OPT_NUMBER,
3553 },{
3554 .name = "height",
3555 .type = QEMU_OPT_NUMBER,
3556 },{
3557 .name = "cols",
3558 .type = QEMU_OPT_NUMBER,
3559 },{
3560 .name = "rows",
3561 .type = QEMU_OPT_NUMBER,
3562 },{
3563 .name = "mux",
3564 .type = QEMU_OPT_BOOL,
3565 },{
3566 .name = "signal",
3567 .type = QEMU_OPT_BOOL,
3568 },{
3569 .name = "name",
3570 .type = QEMU_OPT_STRING,
3571 },{
3572 .name = "debug",
3573 .type = QEMU_OPT_NUMBER,
3574 },{
3575 .name = "size",
3576 .type = QEMU_OPT_SIZE,
3577 },
3578 { /* end of list */ }
3579 },
3580 };
3581
3582 #ifdef _WIN32
3583
3584 static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
3585 {
3586 HANDLE out;
3587
3588 if (file->in) {
3589 error_setg(errp, "input file not supported");
3590 return NULL;
3591 }
3592
3593 out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
3594 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
3595 if (out == INVALID_HANDLE_VALUE) {
3596 error_setg(errp, "open %s failed", file->out);
3597 return NULL;
3598 }
3599 return qemu_chr_open_win_file(out);
3600 }
3601
3602 static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
3603 Error **errp)
3604 {
3605 return qemu_chr_open_win_path(serial->device);
3606 }
3607
3608 static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
3609 Error **errp)
3610 {
3611 error_setg(errp, "character device backend type 'parallel' not supported");
3612 return NULL;
3613 }
3614
3615 #else /* WIN32 */
3616
3617 static int qmp_chardev_open_file_source(char *src, int flags,
3618 Error **errp)
3619 {
3620 int fd = -1;
3621
3622 TFR(fd = qemu_open(src, flags, 0666));
3623 if (fd == -1) {
3624 error_setg(errp, "open %s: %s", src, strerror(errno));
3625 }
3626 return fd;
3627 }
3628
3629 static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
3630 {
3631 int flags, in = -1, out = -1;
3632
3633 flags = O_WRONLY | O_TRUNC | O_CREAT | O_BINARY;
3634 out = qmp_chardev_open_file_source(file->out, flags, errp);
3635 if (error_is_set(errp)) {
3636 return NULL;
3637 }
3638
3639 if (file->in) {
3640 flags = O_RDONLY;
3641 in = qmp_chardev_open_file_source(file->in, flags, errp);
3642 if (error_is_set(errp)) {
3643 qemu_close(out);
3644 return NULL;
3645 }
3646 }
3647
3648 return qemu_chr_open_fd(in, out);
3649 }
3650
3651 static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
3652 Error **errp)
3653 {
3654 #ifdef HAVE_CHARDEV_TTY
3655 int fd;
3656
3657 fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
3658 if (error_is_set(errp)) {
3659 return NULL;
3660 }
3661 socket_set_nonblock(fd);
3662 return qemu_chr_open_tty_fd(fd);
3663 #else
3664 error_setg(errp, "character device backend type 'serial' not supported");
3665 return NULL;
3666 #endif
3667 }
3668
3669 static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
3670 Error **errp)
3671 {
3672 #ifdef HAVE_CHARDEV_PARPORT
3673 int fd;
3674
3675 fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
3676 if (error_is_set(errp)) {
3677 return NULL;
3678 }
3679 return qemu_chr_open_pp_fd(fd);
3680 #else
3681 error_setg(errp, "character device backend type 'parallel' not supported");
3682 return NULL;
3683 #endif
3684 }
3685
3686 #endif /* WIN32 */
3687
3688 static CharDriverState *qmp_chardev_open_socket(ChardevSocket *sock,
3689 Error **errp)
3690 {
3691 SocketAddress *addr = sock->addr;
3692 bool do_nodelay = sock->has_nodelay ? sock->nodelay : false;
3693 bool is_listen = sock->has_server ? sock->server : true;
3694 bool is_telnet = sock->has_telnet ? sock->telnet : false;
3695 bool is_waitconnect = sock->has_wait ? sock->wait : false;
3696 int fd;
3697
3698 if (is_listen) {
3699 fd = socket_listen(addr, errp);
3700 } else {
3701 fd = socket_connect(addr, errp, NULL, NULL);
3702 }
3703 if (error_is_set(errp)) {
3704 return NULL;
3705 }
3706 return qemu_chr_open_socket_fd(fd, do_nodelay, is_listen,
3707 is_telnet, is_waitconnect, errp);
3708 }
3709
3710 static CharDriverState *qmp_chardev_open_dgram(ChardevDgram *dgram,
3711 Error **errp)
3712 {
3713 int fd;
3714
3715 fd = socket_dgram(dgram->remote, dgram->local, errp);
3716 if (error_is_set(errp)) {
3717 return NULL;
3718 }
3719 return qemu_chr_open_udp_fd(fd);
3720 }
3721
3722 ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
3723 Error **errp)
3724 {
3725 ChardevReturn *ret = g_new0(ChardevReturn, 1);
3726 CharDriverState *base, *chr = NULL;
3727
3728 chr = qemu_chr_find(id);
3729 if (chr) {
3730 error_setg(errp, "Chardev '%s' already exists", id);
3731 g_free(ret);
3732 return NULL;
3733 }
3734
3735 switch (backend->kind) {
3736 case CHARDEV_BACKEND_KIND_FILE:
3737 chr = qmp_chardev_open_file(backend->file, errp);
3738 break;
3739 case CHARDEV_BACKEND_KIND_SERIAL:
3740 chr = qmp_chardev_open_serial(backend->serial, errp);
3741 break;
3742 case CHARDEV_BACKEND_KIND_PARALLEL:
3743 chr = qmp_chardev_open_parallel(backend->parallel, errp);
3744 break;
3745 case CHARDEV_BACKEND_KIND_PIPE:
3746 chr = qemu_chr_open_pipe(backend->pipe);
3747 break;
3748 case CHARDEV_BACKEND_KIND_SOCKET:
3749 chr = qmp_chardev_open_socket(backend->socket, errp);
3750 break;
3751 case CHARDEV_BACKEND_KIND_DGRAM:
3752 chr = qmp_chardev_open_dgram(backend->dgram, errp);
3753 break;
3754 #ifdef HAVE_CHARDEV_TTY
3755 case CHARDEV_BACKEND_KIND_PTY:
3756 chr = qemu_chr_open_pty(id, ret);
3757 break;
3758 #endif
3759 case CHARDEV_BACKEND_KIND_NULL:
3760 chr = qemu_chr_open_null();
3761 break;
3762 case CHARDEV_BACKEND_KIND_MUX:
3763 base = qemu_chr_find(backend->mux->chardev);
3764 if (base == NULL) {
3765 error_setg(errp, "mux: base chardev %s not found",
3766 backend->mux->chardev);
3767 break;
3768 }
3769 chr = qemu_chr_open_mux(base);
3770 break;
3771 case CHARDEV_BACKEND_KIND_MSMOUSE:
3772 chr = qemu_chr_open_msmouse();
3773 break;
3774 #ifdef CONFIG_BRLAPI
3775 case CHARDEV_BACKEND_KIND_BRAILLE:
3776 chr = chr_baum_init();
3777 break;
3778 #endif
3779 case CHARDEV_BACKEND_KIND_STDIO:
3780 chr = qemu_chr_open_stdio(backend->stdio);
3781 break;
3782 #ifdef _WIN32
3783 case CHARDEV_BACKEND_KIND_CONSOLE:
3784 chr = qemu_chr_open_win_con();
3785 break;
3786 #endif
3787 #ifdef CONFIG_SPICE
3788 case CHARDEV_BACKEND_KIND_SPICEVMC:
3789 chr = qemu_chr_open_spice_vmc(backend->spicevmc->type);
3790 break;
3791 case CHARDEV_BACKEND_KIND_SPICEPORT:
3792 chr = qemu_chr_open_spice_port(backend->spiceport->fqdn);
3793 break;
3794 #endif
3795 case CHARDEV_BACKEND_KIND_VC:
3796 chr = vc_init(backend->vc);
3797 break;
3798 case CHARDEV_BACKEND_KIND_MEMORY:
3799 chr = qemu_chr_open_ringbuf(backend->memory, errp);
3800 break;
3801 default:
3802 error_setg(errp, "unknown chardev backend (%d)", backend->kind);
3803 break;
3804 }
3805
3806 if (chr == NULL && !error_is_set(errp)) {
3807 error_setg(errp, "Failed to create chardev");
3808 }
3809 if (chr) {
3810 chr->label = g_strdup(id);
3811 chr->avail_connections =
3812 (backend->kind == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1;
3813 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3814 return ret;
3815 } else {
3816 g_free(ret);
3817 return NULL;
3818 }
3819 }
3820
3821 void qmp_chardev_remove(const char *id, Error **errp)
3822 {
3823 CharDriverState *chr;
3824
3825 chr = qemu_chr_find(id);
3826 if (NULL == chr) {
3827 error_setg(errp, "Chardev '%s' not found", id);
3828 return;
3829 }
3830 if (chr->chr_can_read || chr->chr_read ||
3831 chr->chr_event || chr->handler_opaque) {
3832 error_setg(errp, "Chardev '%s' is busy", id);
3833 return;
3834 }
3835 qemu_chr_delete(chr);
3836 }
3837
3838 static void register_types(void)
3839 {
3840 register_char_driver_qapi("null", CHARDEV_BACKEND_KIND_NULL, NULL);
3841 register_char_driver("socket", qemu_chr_open_socket);
3842 register_char_driver("udp", qemu_chr_open_udp);
3843 register_char_driver_qapi("memory", CHARDEV_BACKEND_KIND_MEMORY,
3844 qemu_chr_parse_ringbuf);
3845 register_char_driver_qapi("file", CHARDEV_BACKEND_KIND_FILE,
3846 qemu_chr_parse_file_out);
3847 register_char_driver_qapi("stdio", CHARDEV_BACKEND_KIND_STDIO,
3848 qemu_chr_parse_stdio);
3849 register_char_driver_qapi("serial", CHARDEV_BACKEND_KIND_SERIAL,
3850 qemu_chr_parse_serial);
3851 register_char_driver_qapi("tty", CHARDEV_BACKEND_KIND_SERIAL,
3852 qemu_chr_parse_serial);
3853 register_char_driver_qapi("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
3854 qemu_chr_parse_parallel);
3855 register_char_driver_qapi("parport", CHARDEV_BACKEND_KIND_PARALLEL,
3856 qemu_chr_parse_parallel);
3857 register_char_driver_qapi("pty", CHARDEV_BACKEND_KIND_PTY, NULL);
3858 register_char_driver_qapi("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL);
3859 register_char_driver_qapi("pipe", CHARDEV_BACKEND_KIND_PIPE,
3860 qemu_chr_parse_pipe);
3861 }
3862
3863 type_init(register_types);
AR7 emulation for QEMU