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Merge remote-tracking branch 'mdroth/qga-pull-4-2-13' into staging
[qemu.git] / qemu-char.c
1 /*
2 * QEMU System Emulator
3 *
4 * Copyright (c) 2003-2008 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24 #include "qemu-common.h"
25 #include "monitor/monitor.h"
26 #include "ui/console.h"
27 #include "sysemu/sysemu.h"
28 #include "qemu/timer.h"
29 #include "char/char.h"
30 #include "hw/usb.h"
31 #include "qmp-commands.h"
32
33 #include <unistd.h>
34 #include <fcntl.h>
35 #include <time.h>
36 #include <errno.h>
37 #include <sys/time.h>
38 #include <zlib.h>
39
40 #ifndef _WIN32
41 #include <sys/times.h>
42 #include <sys/wait.h>
43 #include <termios.h>
44 #include <sys/mman.h>
45 #include <sys/ioctl.h>
46 #include <sys/resource.h>
47 #include <sys/socket.h>
48 #include <netinet/in.h>
49 #include <net/if.h>
50 #include <arpa/inet.h>
51 #include <dirent.h>
52 #include <netdb.h>
53 #include <sys/select.h>
54 #ifdef CONFIG_BSD
55 #include <sys/stat.h>
56 #if defined(__GLIBC__)
57 #include <pty.h>
58 #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
59 #include <libutil.h>
60 #else
61 #include <util.h>
62 #endif
63 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
64 #include <dev/ppbus/ppi.h>
65 #include <dev/ppbus/ppbconf.h>
66 #elif defined(__DragonFly__)
67 #include <dev/misc/ppi/ppi.h>
68 #include <bus/ppbus/ppbconf.h>
69 #endif
70 #else
71 #ifdef __linux__
72 #include <pty.h>
73
74 #include <linux/ppdev.h>
75 #include <linux/parport.h>
76 #endif
77 #ifdef __sun__
78 #include <sys/stat.h>
79 #include <sys/ethernet.h>
80 #include <sys/sockio.h>
81 #include <netinet/arp.h>
82 #include <netinet/in.h>
83 #include <netinet/in_systm.h>
84 #include <netinet/ip.h>
85 #include <netinet/ip_icmp.h> // must come after ip.h
86 #include <netinet/udp.h>
87 #include <netinet/tcp.h>
88 #include <net/if.h>
89 #include <syslog.h>
90 #include <stropts.h>
91 #endif
92 #endif
93 #endif
94
95 #include "qemu/sockets.h"
96 #include "ui/qemu-spice.h"
97
98 #define READ_BUF_LEN 4096
99
100 /***********************************************************/
101 /* character device */
102
103 static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
104 QTAILQ_HEAD_INITIALIZER(chardevs);
105
106 void qemu_chr_be_event(CharDriverState *s, int event)
107 {
108 /* Keep track if the char device is open */
109 switch (event) {
110 case CHR_EVENT_OPENED:
111 s->be_open = 1;
112 break;
113 case CHR_EVENT_CLOSED:
114 s->be_open = 0;
115 break;
116 }
117
118 if (!s->chr_event)
119 return;
120 s->chr_event(s->handler_opaque, event);
121 }
122
123 static gboolean qemu_chr_be_generic_open_bh(gpointer opaque)
124 {
125 CharDriverState *s = opaque;
126 qemu_chr_be_event(s, CHR_EVENT_OPENED);
127 s->idle_tag = 0;
128 return FALSE;
129 }
130
131 void qemu_chr_be_generic_open(CharDriverState *s)
132 {
133 if (s->idle_tag == 0) {
134 s->idle_tag = g_idle_add(qemu_chr_be_generic_open_bh, s);
135 }
136 }
137
138 int qemu_chr_fe_write(CharDriverState *s, const uint8_t *buf, int len)
139 {
140 return s->chr_write(s, buf, len);
141 }
142
143 int qemu_chr_fe_write_all(CharDriverState *s, const uint8_t *buf, int len)
144 {
145 int offset = 0;
146 int res;
147
148 while (offset < len) {
149 do {
150 res = s->chr_write(s, buf + offset, len - offset);
151 if (res == -1 && errno == EAGAIN) {
152 g_usleep(100);
153 }
154 } while (res == -1 && errno == EAGAIN);
155
156 if (res == 0) {
157 break;
158 }
159
160 if (res < 0) {
161 return res;
162 }
163
164 offset += res;
165 }
166
167 return offset;
168 }
169
170 int qemu_chr_fe_ioctl(CharDriverState *s, int cmd, void *arg)
171 {
172 if (!s->chr_ioctl)
173 return -ENOTSUP;
174 return s->chr_ioctl(s, cmd, arg);
175 }
176
177 int qemu_chr_be_can_write(CharDriverState *s)
178 {
179 if (!s->chr_can_read)
180 return 0;
181 return s->chr_can_read(s->handler_opaque);
182 }
183
184 void qemu_chr_be_write(CharDriverState *s, uint8_t *buf, int len)
185 {
186 if (s->chr_read) {
187 s->chr_read(s->handler_opaque, buf, len);
188 }
189 }
190
191 int qemu_chr_fe_get_msgfd(CharDriverState *s)
192 {
193 return s->get_msgfd ? s->get_msgfd(s) : -1;
194 }
195
196 int qemu_chr_add_client(CharDriverState *s, int fd)
197 {
198 return s->chr_add_client ? s->chr_add_client(s, fd) : -1;
199 }
200
201 void qemu_chr_accept_input(CharDriverState *s)
202 {
203 if (s->chr_accept_input)
204 s->chr_accept_input(s);
205 qemu_notify_event();
206 }
207
208 void qemu_chr_fe_printf(CharDriverState *s, const char *fmt, ...)
209 {
210 char buf[READ_BUF_LEN];
211 va_list ap;
212 va_start(ap, fmt);
213 vsnprintf(buf, sizeof(buf), fmt, ap);
214 qemu_chr_fe_write(s, (uint8_t *)buf, strlen(buf));
215 va_end(ap);
216 }
217
218 void qemu_chr_add_handlers(CharDriverState *s,
219 IOCanReadHandler *fd_can_read,
220 IOReadHandler *fd_read,
221 IOEventHandler *fd_event,
222 void *opaque)
223 {
224 int fe_open;
225
226 if (!opaque && !fd_can_read && !fd_read && !fd_event) {
227 fe_open = 0;
228 } else {
229 fe_open = 1;
230 }
231 s->chr_can_read = fd_can_read;
232 s->chr_read = fd_read;
233 s->chr_event = fd_event;
234 s->handler_opaque = opaque;
235 if (s->chr_update_read_handler)
236 s->chr_update_read_handler(s);
237
238 if (!s->explicit_fe_open) {
239 qemu_chr_fe_set_open(s, fe_open);
240 }
241
242 /* We're connecting to an already opened device, so let's make sure we
243 also get the open event */
244 if (fe_open && s->be_open) {
245 qemu_chr_be_generic_open(s);
246 }
247 }
248
249 static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
250 {
251 return len;
252 }
253
254 static CharDriverState *qemu_chr_open_null(void)
255 {
256 CharDriverState *chr;
257
258 chr = g_malloc0(sizeof(CharDriverState));
259 chr->chr_write = null_chr_write;
260 return chr;
261 }
262
263 /* MUX driver for serial I/O splitting */
264 #define MAX_MUX 4
265 #define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
266 #define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
267 typedef struct {
268 IOCanReadHandler *chr_can_read[MAX_MUX];
269 IOReadHandler *chr_read[MAX_MUX];
270 IOEventHandler *chr_event[MAX_MUX];
271 void *ext_opaque[MAX_MUX];
272 CharDriverState *drv;
273 int focus;
274 int mux_cnt;
275 int term_got_escape;
276 int max_size;
277 /* Intermediate input buffer allows to catch escape sequences even if the
278 currently active device is not accepting any input - but only until it
279 is full as well. */
280 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
281 int prod[MAX_MUX];
282 int cons[MAX_MUX];
283 int timestamps;
284 int linestart;
285 int64_t timestamps_start;
286 } MuxDriver;
287
288
289 static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
290 {
291 MuxDriver *d = chr->opaque;
292 int ret;
293 if (!d->timestamps) {
294 ret = d->drv->chr_write(d->drv, buf, len);
295 } else {
296 int i;
297
298 ret = 0;
299 for (i = 0; i < len; i++) {
300 if (d->linestart) {
301 char buf1[64];
302 int64_t ti;
303 int secs;
304
305 ti = qemu_get_clock_ms(rt_clock);
306 if (d->timestamps_start == -1)
307 d->timestamps_start = ti;
308 ti -= d->timestamps_start;
309 secs = ti / 1000;
310 snprintf(buf1, sizeof(buf1),
311 "[%02d:%02d:%02d.%03d] ",
312 secs / 3600,
313 (secs / 60) % 60,
314 secs % 60,
315 (int)(ti % 1000));
316 d->drv->chr_write(d->drv, (uint8_t *)buf1, strlen(buf1));
317 d->linestart = 0;
318 }
319 ret += d->drv->chr_write(d->drv, buf+i, 1);
320 if (buf[i] == '\n') {
321 d->linestart = 1;
322 }
323 }
324 }
325 return ret;
326 }
327
328 static const char * const mux_help[] = {
329 "% h print this help\n\r",
330 "% x exit emulator\n\r",
331 "% s save disk data back to file (if -snapshot)\n\r",
332 "% t toggle console timestamps\n\r"
333 "% b send break (magic sysrq)\n\r",
334 "% c switch between console and monitor\n\r",
335 "% % sends %\n\r",
336 NULL
337 };
338
339 int term_escape_char = 0x01; /* ctrl-a is used for escape */
340 static void mux_print_help(CharDriverState *chr)
341 {
342 int i, j;
343 char ebuf[15] = "Escape-Char";
344 char cbuf[50] = "\n\r";
345
346 if (term_escape_char > 0 && term_escape_char < 26) {
347 snprintf(cbuf, sizeof(cbuf), "\n\r");
348 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
349 } else {
350 snprintf(cbuf, sizeof(cbuf),
351 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
352 term_escape_char);
353 }
354 chr->chr_write(chr, (uint8_t *)cbuf, strlen(cbuf));
355 for (i = 0; mux_help[i] != NULL; i++) {
356 for (j=0; mux_help[i][j] != '\0'; j++) {
357 if (mux_help[i][j] == '%')
358 chr->chr_write(chr, (uint8_t *)ebuf, strlen(ebuf));
359 else
360 chr->chr_write(chr, (uint8_t *)&mux_help[i][j], 1);
361 }
362 }
363 }
364
365 static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
366 {
367 if (d->chr_event[mux_nr])
368 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
369 }
370
371 static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
372 {
373 if (d->term_got_escape) {
374 d->term_got_escape = 0;
375 if (ch == term_escape_char)
376 goto send_char;
377 switch(ch) {
378 case '?':
379 case 'h':
380 mux_print_help(chr);
381 break;
382 case 'x':
383 {
384 const char *term = "QEMU: Terminated\n\r";
385 chr->chr_write(chr,(uint8_t *)term,strlen(term));
386 exit(0);
387 break;
388 }
389 case 's':
390 bdrv_commit_all();
391 break;
392 case 'b':
393 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
394 break;
395 case 'c':
396 /* Switch to the next registered device */
397 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
398 d->focus++;
399 if (d->focus >= d->mux_cnt)
400 d->focus = 0;
401 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
402 break;
403 case 't':
404 d->timestamps = !d->timestamps;
405 d->timestamps_start = -1;
406 d->linestart = 0;
407 break;
408 }
409 } else if (ch == term_escape_char) {
410 d->term_got_escape = 1;
411 } else {
412 send_char:
413 return 1;
414 }
415 return 0;
416 }
417
418 static void mux_chr_accept_input(CharDriverState *chr)
419 {
420 MuxDriver *d = chr->opaque;
421 int m = d->focus;
422
423 while (d->prod[m] != d->cons[m] &&
424 d->chr_can_read[m] &&
425 d->chr_can_read[m](d->ext_opaque[m])) {
426 d->chr_read[m](d->ext_opaque[m],
427 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
428 }
429 }
430
431 static int mux_chr_can_read(void *opaque)
432 {
433 CharDriverState *chr = opaque;
434 MuxDriver *d = chr->opaque;
435 int m = d->focus;
436
437 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
438 return 1;
439 if (d->chr_can_read[m])
440 return d->chr_can_read[m](d->ext_opaque[m]);
441 return 0;
442 }
443
444 static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
445 {
446 CharDriverState *chr = opaque;
447 MuxDriver *d = chr->opaque;
448 int m = d->focus;
449 int i;
450
451 mux_chr_accept_input (opaque);
452
453 for(i = 0; i < size; i++)
454 if (mux_proc_byte(chr, d, buf[i])) {
455 if (d->prod[m] == d->cons[m] &&
456 d->chr_can_read[m] &&
457 d->chr_can_read[m](d->ext_opaque[m]))
458 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
459 else
460 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
461 }
462 }
463
464 static void mux_chr_event(void *opaque, int event)
465 {
466 CharDriverState *chr = opaque;
467 MuxDriver *d = chr->opaque;
468 int i;
469
470 /* Send the event to all registered listeners */
471 for (i = 0; i < d->mux_cnt; i++)
472 mux_chr_send_event(d, i, event);
473 }
474
475 static void mux_chr_update_read_handler(CharDriverState *chr)
476 {
477 MuxDriver *d = chr->opaque;
478
479 if (d->mux_cnt >= MAX_MUX) {
480 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
481 return;
482 }
483 d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
484 d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
485 d->chr_read[d->mux_cnt] = chr->chr_read;
486 d->chr_event[d->mux_cnt] = chr->chr_event;
487 /* Fix up the real driver with mux routines */
488 if (d->mux_cnt == 0) {
489 qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
490 mux_chr_event, chr);
491 }
492 if (d->focus != -1) {
493 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
494 }
495 d->focus = d->mux_cnt;
496 d->mux_cnt++;
497 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
498 }
499
500 static CharDriverState *qemu_chr_open_mux(CharDriverState *drv)
501 {
502 CharDriverState *chr;
503 MuxDriver *d;
504
505 chr = g_malloc0(sizeof(CharDriverState));
506 d = g_malloc0(sizeof(MuxDriver));
507
508 chr->opaque = d;
509 d->drv = drv;
510 d->focus = -1;
511 chr->chr_write = mux_chr_write;
512 chr->chr_update_read_handler = mux_chr_update_read_handler;
513 chr->chr_accept_input = mux_chr_accept_input;
514 /* Frontend guest-open / -close notification is not support with muxes */
515 chr->chr_set_fe_open = NULL;
516
517 /* Muxes are always open on creation */
518 qemu_chr_be_generic_open(chr);
519
520 return chr;
521 }
522
523
524 #ifdef _WIN32
525 int send_all(int fd, const void *buf, int len1)
526 {
527 int ret, len;
528
529 len = len1;
530 while (len > 0) {
531 ret = send(fd, buf, len, 0);
532 if (ret < 0) {
533 errno = WSAGetLastError();
534 if (errno != WSAEWOULDBLOCK) {
535 return -1;
536 }
537 } else if (ret == 0) {
538 break;
539 } else {
540 buf += ret;
541 len -= ret;
542 }
543 }
544 return len1 - len;
545 }
546
547 #else
548
549 int send_all(int fd, const void *_buf, int len1)
550 {
551 int ret, len;
552 const uint8_t *buf = _buf;
553
554 len = len1;
555 while (len > 0) {
556 ret = write(fd, buf, len);
557 if (ret < 0) {
558 if (errno != EINTR && errno != EAGAIN)
559 return -1;
560 } else if (ret == 0) {
561 break;
562 } else {
563 buf += ret;
564 len -= ret;
565 }
566 }
567 return len1 - len;
568 }
569
570 int recv_all(int fd, void *_buf, int len1, bool single_read)
571 {
572 int ret, len;
573 uint8_t *buf = _buf;
574
575 len = len1;
576 while ((len > 0) && (ret = read(fd, buf, len)) != 0) {
577 if (ret < 0) {
578 if (errno != EINTR && errno != EAGAIN) {
579 return -1;
580 }
581 continue;
582 } else {
583 if (single_read) {
584 return ret;
585 }
586 buf += ret;
587 len -= ret;
588 }
589 }
590 return len1 - len;
591 }
592
593 #endif /* !_WIN32 */
594
595 typedef struct IOWatchPoll
596 {
597 GSource parent;
598
599 GSource *src;
600
601 IOCanReadHandler *fd_can_read;
602 void *opaque;
603 } IOWatchPoll;
604
605 static IOWatchPoll *io_watch_poll_from_source(GSource *source)
606 {
607 return container_of(source, IOWatchPoll, parent);
608 }
609
610 static gboolean io_watch_poll_prepare(GSource *source, gint *timeout_)
611 {
612 IOWatchPoll *iwp = io_watch_poll_from_source(source);
613 bool now_active = iwp->fd_can_read(iwp->opaque) > 0;
614 bool was_active = g_source_get_context(iwp->src) != NULL;
615 if (was_active == now_active) {
616 return FALSE;
617 }
618
619 if (now_active) {
620 g_source_attach(iwp->src, NULL);
621 } else {
622 g_source_remove(g_source_get_id(iwp->src));
623 }
624 return FALSE;
625 }
626
627 static gboolean io_watch_poll_check(GSource *source)
628 {
629 return FALSE;
630 }
631
632 static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
633 gpointer user_data)
634 {
635 abort();
636 }
637
638 static void io_watch_poll_finalize(GSource *source)
639 {
640 IOWatchPoll *iwp = io_watch_poll_from_source(source);
641 g_source_unref(iwp->src);
642 }
643
644 static GSourceFuncs io_watch_poll_funcs = {
645 .prepare = io_watch_poll_prepare,
646 .check = io_watch_poll_check,
647 .dispatch = io_watch_poll_dispatch,
648 .finalize = io_watch_poll_finalize,
649 };
650
651 /* Can only be used for read */
652 static guint io_add_watch_poll(GIOChannel *channel,
653 IOCanReadHandler *fd_can_read,
654 GIOFunc fd_read,
655 gpointer user_data)
656 {
657 IOWatchPoll *iwp;
658
659 iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs, sizeof(IOWatchPoll));
660 iwp->fd_can_read = fd_can_read;
661 iwp->opaque = user_data;
662 iwp->src = g_io_create_watch(channel, G_IO_IN | G_IO_ERR | G_IO_HUP);
663 g_source_set_callback(iwp->src, (GSourceFunc)fd_read, user_data, NULL);
664
665 return g_source_attach(&iwp->parent, NULL);
666 }
667
668 #ifndef _WIN32
669 static GIOChannel *io_channel_from_fd(int fd)
670 {
671 GIOChannel *chan;
672
673 if (fd == -1) {
674 return NULL;
675 }
676
677 chan = g_io_channel_unix_new(fd);
678
679 g_io_channel_set_encoding(chan, NULL, NULL);
680 g_io_channel_set_buffered(chan, FALSE);
681
682 return chan;
683 }
684 #endif
685
686 static GIOChannel *io_channel_from_socket(int fd)
687 {
688 GIOChannel *chan;
689
690 if (fd == -1) {
691 return NULL;
692 }
693
694 #ifdef _WIN32
695 chan = g_io_channel_win32_new_socket(fd);
696 #else
697 chan = g_io_channel_unix_new(fd);
698 #endif
699
700 g_io_channel_set_encoding(chan, NULL, NULL);
701 g_io_channel_set_buffered(chan, FALSE);
702
703 return chan;
704 }
705
706 static int io_channel_send(GIOChannel *fd, const void *buf, size_t len)
707 {
708 GIOStatus status;
709 size_t offset;
710
711 offset = 0;
712 while (offset < len) {
713 gsize bytes_written;
714
715 status = g_io_channel_write_chars(fd, buf + offset, len - offset,
716 &bytes_written, NULL);
717 if (status != G_IO_STATUS_NORMAL) {
718 if (status == G_IO_STATUS_AGAIN) {
719 /* If we've written any data, return a partial write. */
720 if (offset) {
721 break;
722 }
723 errno = EAGAIN;
724 } else {
725 errno = EINVAL;
726 }
727
728 return -1;
729 } else if (status == G_IO_STATUS_EOF) {
730 break;
731 }
732
733 offset += bytes_written;
734 }
735
736 return offset;
737 }
738
739 #ifndef _WIN32
740
741 typedef struct FDCharDriver {
742 CharDriverState *chr;
743 GIOChannel *fd_in, *fd_out;
744 guint fd_in_tag;
745 int max_size;
746 QTAILQ_ENTRY(FDCharDriver) node;
747 } FDCharDriver;
748
749 static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
750 {
751 FDCharDriver *s = chr->opaque;
752
753 return io_channel_send(s->fd_out, buf, len);
754 }
755
756 static gboolean fd_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
757 {
758 CharDriverState *chr = opaque;
759 FDCharDriver *s = chr->opaque;
760 int len;
761 uint8_t buf[READ_BUF_LEN];
762 GIOStatus status;
763 gsize bytes_read;
764
765 len = sizeof(buf);
766 if (len > s->max_size) {
767 len = s->max_size;
768 }
769 if (len == 0) {
770 return FALSE;
771 }
772
773 status = g_io_channel_read_chars(chan, (gchar *)buf,
774 len, &bytes_read, NULL);
775 if (status == G_IO_STATUS_EOF) {
776 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
777 return FALSE;
778 }
779 if (status == G_IO_STATUS_NORMAL) {
780 qemu_chr_be_write(chr, buf, bytes_read);
781 }
782
783 return TRUE;
784 }
785
786 static int fd_chr_read_poll(void *opaque)
787 {
788 CharDriverState *chr = opaque;
789 FDCharDriver *s = chr->opaque;
790
791 s->max_size = qemu_chr_be_can_write(chr);
792 return s->max_size;
793 }
794
795 static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
796 {
797 FDCharDriver *s = chr->opaque;
798 return g_io_create_watch(s->fd_out, cond);
799 }
800
801 static void fd_chr_update_read_handler(CharDriverState *chr)
802 {
803 FDCharDriver *s = chr->opaque;
804
805 if (s->fd_in_tag) {
806 g_source_remove(s->fd_in_tag);
807 }
808
809 if (s->fd_in) {
810 s->fd_in_tag = io_add_watch_poll(s->fd_in, fd_chr_read_poll, fd_chr_read, chr);
811 }
812 }
813
814 static void fd_chr_close(struct CharDriverState *chr)
815 {
816 FDCharDriver *s = chr->opaque;
817
818 if (s->fd_in_tag) {
819 g_source_remove(s->fd_in_tag);
820 s->fd_in_tag = 0;
821 }
822
823 if (s->fd_in) {
824 g_io_channel_unref(s->fd_in);
825 }
826 if (s->fd_out) {
827 g_io_channel_unref(s->fd_out);
828 }
829
830 g_free(s);
831 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
832 }
833
834 /* open a character device to a unix fd */
835 static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
836 {
837 CharDriverState *chr;
838 FDCharDriver *s;
839
840 chr = g_malloc0(sizeof(CharDriverState));
841 s = g_malloc0(sizeof(FDCharDriver));
842 s->fd_in = io_channel_from_fd(fd_in);
843 s->fd_out = io_channel_from_fd(fd_out);
844 fcntl(fd_out, F_SETFL, O_NONBLOCK);
845 s->chr = chr;
846 chr->opaque = s;
847 chr->chr_add_watch = fd_chr_add_watch;
848 chr->chr_write = fd_chr_write;
849 chr->chr_update_read_handler = fd_chr_update_read_handler;
850 chr->chr_close = fd_chr_close;
851
852 qemu_chr_be_generic_open(chr);
853
854 return chr;
855 }
856
857 static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
858 {
859 int fd_in, fd_out;
860 char filename_in[256], filename_out[256];
861 const char *filename = opts->device;
862
863 if (filename == NULL) {
864 fprintf(stderr, "chardev: pipe: no filename given\n");
865 return NULL;
866 }
867
868 snprintf(filename_in, 256, "%s.in", filename);
869 snprintf(filename_out, 256, "%s.out", filename);
870 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
871 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
872 if (fd_in < 0 || fd_out < 0) {
873 if (fd_in >= 0)
874 close(fd_in);
875 if (fd_out >= 0)
876 close(fd_out);
877 TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
878 if (fd_in < 0) {
879 return NULL;
880 }
881 }
882 return qemu_chr_open_fd(fd_in, fd_out);
883 }
884
885 /* init terminal so that we can grab keys */
886 static struct termios oldtty;
887 static int old_fd0_flags;
888 static bool stdio_allow_signal;
889
890 static void term_exit(void)
891 {
892 tcsetattr (0, TCSANOW, &oldtty);
893 fcntl(0, F_SETFL, old_fd0_flags);
894 }
895
896 static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
897 {
898 struct termios tty;
899
900 tty = oldtty;
901 if (!echo) {
902 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
903 |INLCR|IGNCR|ICRNL|IXON);
904 tty.c_oflag |= OPOST;
905 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
906 tty.c_cflag &= ~(CSIZE|PARENB);
907 tty.c_cflag |= CS8;
908 tty.c_cc[VMIN] = 1;
909 tty.c_cc[VTIME] = 0;
910 }
911 /* if graphical mode, we allow Ctrl-C handling */
912 if (!stdio_allow_signal)
913 tty.c_lflag &= ~ISIG;
914
915 tcsetattr (0, TCSANOW, &tty);
916 }
917
918 static void qemu_chr_close_stdio(struct CharDriverState *chr)
919 {
920 term_exit();
921 fd_chr_close(chr);
922 }
923
924 static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
925 {
926 CharDriverState *chr;
927
928 if (is_daemonized()) {
929 error_report("cannot use stdio with -daemonize");
930 return NULL;
931 }
932 old_fd0_flags = fcntl(0, F_GETFL);
933 tcgetattr (0, &oldtty);
934 fcntl(0, F_SETFL, O_NONBLOCK);
935 atexit(term_exit);
936
937 chr = qemu_chr_open_fd(0, 1);
938 chr->chr_close = qemu_chr_close_stdio;
939 chr->chr_set_echo = qemu_chr_set_echo_stdio;
940 stdio_allow_signal = display_type != DT_NOGRAPHIC;
941 if (opts->has_signal) {
942 stdio_allow_signal = opts->signal;
943 }
944 qemu_chr_fe_set_echo(chr, false);
945
946 return chr;
947 }
948
949 #ifdef __sun__
950 /* Once Solaris has openpty(), this is going to be removed. */
951 static int openpty(int *amaster, int *aslave, char *name,
952 struct termios *termp, struct winsize *winp)
953 {
954 const char *slave;
955 int mfd = -1, sfd = -1;
956
957 *amaster = *aslave = -1;
958
959 mfd = open("/dev/ptmx", O_RDWR | O_NOCTTY);
960 if (mfd < 0)
961 goto err;
962
963 if (grantpt(mfd) == -1 || unlockpt(mfd) == -1)
964 goto err;
965
966 if ((slave = ptsname(mfd)) == NULL)
967 goto err;
968
969 if ((sfd = open(slave, O_RDONLY | O_NOCTTY)) == -1)
970 goto err;
971
972 if (ioctl(sfd, I_PUSH, "ptem") == -1 ||
973 (termp != NULL && tcgetattr(sfd, termp) < 0))
974 goto err;
975
976 if (amaster)
977 *amaster = mfd;
978 if (aslave)
979 *aslave = sfd;
980 if (winp)
981 ioctl(sfd, TIOCSWINSZ, winp);
982
983 return 0;
984
985 err:
986 if (sfd != -1)
987 close(sfd);
988 close(mfd);
989 return -1;
990 }
991
992 static void cfmakeraw (struct termios *termios_p)
993 {
994 termios_p->c_iflag &=
995 ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
996 termios_p->c_oflag &= ~OPOST;
997 termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
998 termios_p->c_cflag &= ~(CSIZE|PARENB);
999 termios_p->c_cflag |= CS8;
1000
1001 termios_p->c_cc[VMIN] = 0;
1002 termios_p->c_cc[VTIME] = 0;
1003 }
1004 #endif
1005
1006 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
1007 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
1008 || defined(__GLIBC__)
1009
1010 #define HAVE_CHARDEV_TTY 1
1011
1012 typedef struct {
1013 GIOChannel *fd;
1014 guint fd_tag;
1015 int connected;
1016 int polling;
1017 int read_bytes;
1018 guint timer_tag;
1019 } PtyCharDriver;
1020
1021 static void pty_chr_update_read_handler(CharDriverState *chr);
1022 static void pty_chr_state(CharDriverState *chr, int connected);
1023
1024 static gboolean pty_chr_timer(gpointer opaque)
1025 {
1026 struct CharDriverState *chr = opaque;
1027 PtyCharDriver *s = chr->opaque;
1028
1029 if (s->connected) {
1030 goto out;
1031 }
1032 if (s->polling) {
1033 /* If we arrive here without polling being cleared due
1034 * read returning -EIO, then we are (re-)connected */
1035 pty_chr_state(chr, 1);
1036 goto out;
1037 }
1038
1039 /* Next poll ... */
1040 pty_chr_update_read_handler(chr);
1041
1042 out:
1043 return FALSE;
1044 }
1045
1046 static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
1047 {
1048 PtyCharDriver *s = chr->opaque;
1049
1050 if (s->timer_tag) {
1051 g_source_remove(s->timer_tag);
1052 s->timer_tag = 0;
1053 }
1054
1055 if (ms == 1000) {
1056 s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
1057 } else {
1058 s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
1059 }
1060 }
1061
1062 static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1063 {
1064 PtyCharDriver *s = chr->opaque;
1065
1066 if (!s->connected) {
1067 /* guest sends data, check for (re-)connect */
1068 pty_chr_update_read_handler(chr);
1069 return 0;
1070 }
1071 return io_channel_send(s->fd, buf, len);
1072 }
1073
1074 static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1075 {
1076 PtyCharDriver *s = chr->opaque;
1077 return g_io_create_watch(s->fd, cond);
1078 }
1079
1080 static int pty_chr_read_poll(void *opaque)
1081 {
1082 CharDriverState *chr = opaque;
1083 PtyCharDriver *s = chr->opaque;
1084
1085 s->read_bytes = qemu_chr_be_can_write(chr);
1086 return s->read_bytes;
1087 }
1088
1089 static gboolean pty_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
1090 {
1091 CharDriverState *chr = opaque;
1092 PtyCharDriver *s = chr->opaque;
1093 gsize size, len;
1094 uint8_t buf[READ_BUF_LEN];
1095 GIOStatus status;
1096
1097 len = sizeof(buf);
1098 if (len > s->read_bytes)
1099 len = s->read_bytes;
1100 if (len == 0)
1101 return FALSE;
1102 status = g_io_channel_read_chars(s->fd, (gchar *)buf, len, &size, NULL);
1103 if (status != G_IO_STATUS_NORMAL) {
1104 pty_chr_state(chr, 0);
1105 return FALSE;
1106 } else {
1107 pty_chr_state(chr, 1);
1108 qemu_chr_be_write(chr, buf, size);
1109 }
1110 return TRUE;
1111 }
1112
1113 static void pty_chr_update_read_handler(CharDriverState *chr)
1114 {
1115 PtyCharDriver *s = chr->opaque;
1116
1117 if (s->fd_tag) {
1118 g_source_remove(s->fd_tag);
1119 }
1120
1121 s->fd_tag = io_add_watch_poll(s->fd, pty_chr_read_poll, pty_chr_read, chr);
1122 s->polling = 1;
1123 /*
1124 * Short timeout here: just need wait long enougth that qemu makes
1125 * it through the poll loop once. When reconnected we want a
1126 * short timeout so we notice it almost instantly. Otherwise
1127 * read() gives us -EIO instantly, making pty_chr_state() reset the
1128 * timeout to the normal (much longer) poll interval before the
1129 * timer triggers.
1130 */
1131 pty_chr_rearm_timer(chr, 10);
1132 }
1133
1134 static void pty_chr_state(CharDriverState *chr, int connected)
1135 {
1136 PtyCharDriver *s = chr->opaque;
1137
1138 if (!connected) {
1139 g_source_remove(s->fd_tag);
1140 s->fd_tag = 0;
1141 s->connected = 0;
1142 s->polling = 0;
1143 /* (re-)connect poll interval for idle guests: once per second.
1144 * We check more frequently in case the guests sends data to
1145 * the virtual device linked to our pty. */
1146 pty_chr_rearm_timer(chr, 1000);
1147 } else {
1148 if (!s->connected)
1149 qemu_chr_be_generic_open(chr);
1150 s->connected = 1;
1151 }
1152 }
1153
1154
1155 static void pty_chr_close(struct CharDriverState *chr)
1156 {
1157 PtyCharDriver *s = chr->opaque;
1158 int fd;
1159
1160 if (s->fd_tag) {
1161 g_source_remove(s->fd_tag);
1162 }
1163 fd = g_io_channel_unix_get_fd(s->fd);
1164 g_io_channel_unref(s->fd);
1165 close(fd);
1166 if (s->timer_tag) {
1167 g_source_remove(s->timer_tag);
1168 }
1169 g_free(s);
1170 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1171 }
1172
1173 static CharDriverState *qemu_chr_open_pty(const char *id,
1174 ChardevReturn *ret)
1175 {
1176 CharDriverState *chr;
1177 PtyCharDriver *s;
1178 struct termios tty;
1179 int master_fd, slave_fd;
1180 #if defined(__OpenBSD__) || defined(__DragonFly__)
1181 char pty_name[PATH_MAX];
1182 #define q_ptsname(x) pty_name
1183 #else
1184 char *pty_name = NULL;
1185 #define q_ptsname(x) ptsname(x)
1186 #endif
1187
1188 if (openpty(&master_fd, &slave_fd, pty_name, NULL, NULL) < 0) {
1189 return NULL;
1190 }
1191
1192 /* Set raw attributes on the pty. */
1193 tcgetattr(slave_fd, &tty);
1194 cfmakeraw(&tty);
1195 tcsetattr(slave_fd, TCSAFLUSH, &tty);
1196 close(slave_fd);
1197
1198 chr = g_malloc0(sizeof(CharDriverState));
1199
1200 chr->filename = g_strdup_printf("pty:%s", q_ptsname(master_fd));
1201 ret->pty = g_strdup(q_ptsname(master_fd));
1202 ret->has_pty = true;
1203
1204 fprintf(stderr, "char device redirected to %s (label %s)\n",
1205 q_ptsname(master_fd), id);
1206
1207 s = g_malloc0(sizeof(PtyCharDriver));
1208 chr->opaque = s;
1209 chr->chr_write = pty_chr_write;
1210 chr->chr_update_read_handler = pty_chr_update_read_handler;
1211 chr->chr_close = pty_chr_close;
1212 chr->chr_add_watch = pty_chr_add_watch;
1213
1214 s->fd = io_channel_from_fd(master_fd);
1215 s->timer_tag = 0;
1216
1217 return chr;
1218 }
1219
1220 static void tty_serial_init(int fd, int speed,
1221 int parity, int data_bits, int stop_bits)
1222 {
1223 struct termios tty;
1224 speed_t spd;
1225
1226 #if 0
1227 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1228 speed, parity, data_bits, stop_bits);
1229 #endif
1230 tcgetattr (fd, &tty);
1231
1232 #define check_speed(val) if (speed <= val) { spd = B##val; break; }
1233 speed = speed * 10 / 11;
1234 do {
1235 check_speed(50);
1236 check_speed(75);
1237 check_speed(110);
1238 check_speed(134);
1239 check_speed(150);
1240 check_speed(200);
1241 check_speed(300);
1242 check_speed(600);
1243 check_speed(1200);
1244 check_speed(1800);
1245 check_speed(2400);
1246 check_speed(4800);
1247 check_speed(9600);
1248 check_speed(19200);
1249 check_speed(38400);
1250 /* Non-Posix values follow. They may be unsupported on some systems. */
1251 check_speed(57600);
1252 check_speed(115200);
1253 #ifdef B230400
1254 check_speed(230400);
1255 #endif
1256 #ifdef B460800
1257 check_speed(460800);
1258 #endif
1259 #ifdef B500000
1260 check_speed(500000);
1261 #endif
1262 #ifdef B576000
1263 check_speed(576000);
1264 #endif
1265 #ifdef B921600
1266 check_speed(921600);
1267 #endif
1268 #ifdef B1000000
1269 check_speed(1000000);
1270 #endif
1271 #ifdef B1152000
1272 check_speed(1152000);
1273 #endif
1274 #ifdef B1500000
1275 check_speed(1500000);
1276 #endif
1277 #ifdef B2000000
1278 check_speed(2000000);
1279 #endif
1280 #ifdef B2500000
1281 check_speed(2500000);
1282 #endif
1283 #ifdef B3000000
1284 check_speed(3000000);
1285 #endif
1286 #ifdef B3500000
1287 check_speed(3500000);
1288 #endif
1289 #ifdef B4000000
1290 check_speed(4000000);
1291 #endif
1292 spd = B115200;
1293 } while (0);
1294
1295 cfsetispeed(&tty, spd);
1296 cfsetospeed(&tty, spd);
1297
1298 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1299 |INLCR|IGNCR|ICRNL|IXON);
1300 tty.c_oflag |= OPOST;
1301 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1302 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1303 switch(data_bits) {
1304 default:
1305 case 8:
1306 tty.c_cflag |= CS8;
1307 break;
1308 case 7:
1309 tty.c_cflag |= CS7;
1310 break;
1311 case 6:
1312 tty.c_cflag |= CS6;
1313 break;
1314 case 5:
1315 tty.c_cflag |= CS5;
1316 break;
1317 }
1318 switch(parity) {
1319 default:
1320 case 'N':
1321 break;
1322 case 'E':
1323 tty.c_cflag |= PARENB;
1324 break;
1325 case 'O':
1326 tty.c_cflag |= PARENB | PARODD;
1327 break;
1328 }
1329 if (stop_bits == 2)
1330 tty.c_cflag |= CSTOPB;
1331
1332 tcsetattr (fd, TCSANOW, &tty);
1333 }
1334
1335 static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1336 {
1337 FDCharDriver *s = chr->opaque;
1338
1339 switch(cmd) {
1340 case CHR_IOCTL_SERIAL_SET_PARAMS:
1341 {
1342 QEMUSerialSetParams *ssp = arg;
1343 tty_serial_init(g_io_channel_unix_get_fd(s->fd_in),
1344 ssp->speed, ssp->parity,
1345 ssp->data_bits, ssp->stop_bits);
1346 }
1347 break;
1348 case CHR_IOCTL_SERIAL_SET_BREAK:
1349 {
1350 int enable = *(int *)arg;
1351 if (enable) {
1352 tcsendbreak(g_io_channel_unix_get_fd(s->fd_in), 1);
1353 }
1354 }
1355 break;
1356 case CHR_IOCTL_SERIAL_GET_TIOCM:
1357 {
1358 int sarg = 0;
1359 int *targ = (int *)arg;
1360 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &sarg);
1361 *targ = 0;
1362 if (sarg & TIOCM_CTS)
1363 *targ |= CHR_TIOCM_CTS;
1364 if (sarg & TIOCM_CAR)
1365 *targ |= CHR_TIOCM_CAR;
1366 if (sarg & TIOCM_DSR)
1367 *targ |= CHR_TIOCM_DSR;
1368 if (sarg & TIOCM_RI)
1369 *targ |= CHR_TIOCM_RI;
1370 if (sarg & TIOCM_DTR)
1371 *targ |= CHR_TIOCM_DTR;
1372 if (sarg & TIOCM_RTS)
1373 *targ |= CHR_TIOCM_RTS;
1374 }
1375 break;
1376 case CHR_IOCTL_SERIAL_SET_TIOCM:
1377 {
1378 int sarg = *(int *)arg;
1379 int targ = 0;
1380 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &targ);
1381 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1382 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1383 if (sarg & CHR_TIOCM_CTS)
1384 targ |= TIOCM_CTS;
1385 if (sarg & CHR_TIOCM_CAR)
1386 targ |= TIOCM_CAR;
1387 if (sarg & CHR_TIOCM_DSR)
1388 targ |= TIOCM_DSR;
1389 if (sarg & CHR_TIOCM_RI)
1390 targ |= TIOCM_RI;
1391 if (sarg & CHR_TIOCM_DTR)
1392 targ |= TIOCM_DTR;
1393 if (sarg & CHR_TIOCM_RTS)
1394 targ |= TIOCM_RTS;
1395 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMSET, &targ);
1396 }
1397 break;
1398 default:
1399 return -ENOTSUP;
1400 }
1401 return 0;
1402 }
1403
1404 static void qemu_chr_close_tty(CharDriverState *chr)
1405 {
1406 FDCharDriver *s = chr->opaque;
1407 int fd = -1;
1408
1409 if (s) {
1410 fd = g_io_channel_unix_get_fd(s->fd_in);
1411 }
1412
1413 fd_chr_close(chr);
1414
1415 if (fd >= 0) {
1416 close(fd);
1417 }
1418 }
1419
1420 static CharDriverState *qemu_chr_open_tty_fd(int fd)
1421 {
1422 CharDriverState *chr;
1423
1424 tty_serial_init(fd, 115200, 'N', 8, 1);
1425 chr = qemu_chr_open_fd(fd, fd);
1426 chr->chr_ioctl = tty_serial_ioctl;
1427 chr->chr_close = qemu_chr_close_tty;
1428 return chr;
1429 }
1430 #endif /* __linux__ || __sun__ */
1431
1432 #if defined(__linux__)
1433
1434 #define HAVE_CHARDEV_PARPORT 1
1435
1436 typedef struct {
1437 int fd;
1438 int mode;
1439 } ParallelCharDriver;
1440
1441 static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1442 {
1443 if (s->mode != mode) {
1444 int m = mode;
1445 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1446 return 0;
1447 s->mode = mode;
1448 }
1449 return 1;
1450 }
1451
1452 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1453 {
1454 ParallelCharDriver *drv = chr->opaque;
1455 int fd = drv->fd;
1456 uint8_t b;
1457
1458 switch(cmd) {
1459 case CHR_IOCTL_PP_READ_DATA:
1460 if (ioctl(fd, PPRDATA, &b) < 0)
1461 return -ENOTSUP;
1462 *(uint8_t *)arg = b;
1463 break;
1464 case CHR_IOCTL_PP_WRITE_DATA:
1465 b = *(uint8_t *)arg;
1466 if (ioctl(fd, PPWDATA, &b) < 0)
1467 return -ENOTSUP;
1468 break;
1469 case CHR_IOCTL_PP_READ_CONTROL:
1470 if (ioctl(fd, PPRCONTROL, &b) < 0)
1471 return -ENOTSUP;
1472 /* Linux gives only the lowest bits, and no way to know data
1473 direction! For better compatibility set the fixed upper
1474 bits. */
1475 *(uint8_t *)arg = b | 0xc0;
1476 break;
1477 case CHR_IOCTL_PP_WRITE_CONTROL:
1478 b = *(uint8_t *)arg;
1479 if (ioctl(fd, PPWCONTROL, &b) < 0)
1480 return -ENOTSUP;
1481 break;
1482 case CHR_IOCTL_PP_READ_STATUS:
1483 if (ioctl(fd, PPRSTATUS, &b) < 0)
1484 return -ENOTSUP;
1485 *(uint8_t *)arg = b;
1486 break;
1487 case CHR_IOCTL_PP_DATA_DIR:
1488 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1489 return -ENOTSUP;
1490 break;
1491 case CHR_IOCTL_PP_EPP_READ_ADDR:
1492 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1493 struct ParallelIOArg *parg = arg;
1494 int n = read(fd, parg->buffer, parg->count);
1495 if (n != parg->count) {
1496 return -EIO;
1497 }
1498 }
1499 break;
1500 case CHR_IOCTL_PP_EPP_READ:
1501 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1502 struct ParallelIOArg *parg = arg;
1503 int n = read(fd, parg->buffer, parg->count);
1504 if (n != parg->count) {
1505 return -EIO;
1506 }
1507 }
1508 break;
1509 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1510 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1511 struct ParallelIOArg *parg = arg;
1512 int n = write(fd, parg->buffer, parg->count);
1513 if (n != parg->count) {
1514 return -EIO;
1515 }
1516 }
1517 break;
1518 case CHR_IOCTL_PP_EPP_WRITE:
1519 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1520 struct ParallelIOArg *parg = arg;
1521 int n = write(fd, parg->buffer, parg->count);
1522 if (n != parg->count) {
1523 return -EIO;
1524 }
1525 }
1526 break;
1527 default:
1528 return -ENOTSUP;
1529 }
1530 return 0;
1531 }
1532
1533 static void pp_close(CharDriverState *chr)
1534 {
1535 ParallelCharDriver *drv = chr->opaque;
1536 int fd = drv->fd;
1537
1538 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1539 ioctl(fd, PPRELEASE);
1540 close(fd);
1541 g_free(drv);
1542 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1543 }
1544
1545 static CharDriverState *qemu_chr_open_pp_fd(int fd)
1546 {
1547 CharDriverState *chr;
1548 ParallelCharDriver *drv;
1549
1550 if (ioctl(fd, PPCLAIM) < 0) {
1551 close(fd);
1552 return NULL;
1553 }
1554
1555 drv = g_malloc0(sizeof(ParallelCharDriver));
1556 drv->fd = fd;
1557 drv->mode = IEEE1284_MODE_COMPAT;
1558
1559 chr = g_malloc0(sizeof(CharDriverState));
1560 chr->chr_write = null_chr_write;
1561 chr->chr_ioctl = pp_ioctl;
1562 chr->chr_close = pp_close;
1563 chr->opaque = drv;
1564
1565 qemu_chr_be_generic_open(chr);
1566
1567 return chr;
1568 }
1569 #endif /* __linux__ */
1570
1571 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
1572
1573 #define HAVE_CHARDEV_PARPORT 1
1574
1575 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1576 {
1577 int fd = (int)(intptr_t)chr->opaque;
1578 uint8_t b;
1579
1580 switch(cmd) {
1581 case CHR_IOCTL_PP_READ_DATA:
1582 if (ioctl(fd, PPIGDATA, &b) < 0)
1583 return -ENOTSUP;
1584 *(uint8_t *)arg = b;
1585 break;
1586 case CHR_IOCTL_PP_WRITE_DATA:
1587 b = *(uint8_t *)arg;
1588 if (ioctl(fd, PPISDATA, &b) < 0)
1589 return -ENOTSUP;
1590 break;
1591 case CHR_IOCTL_PP_READ_CONTROL:
1592 if (ioctl(fd, PPIGCTRL, &b) < 0)
1593 return -ENOTSUP;
1594 *(uint8_t *)arg = b;
1595 break;
1596 case CHR_IOCTL_PP_WRITE_CONTROL:
1597 b = *(uint8_t *)arg;
1598 if (ioctl(fd, PPISCTRL, &b) < 0)
1599 return -ENOTSUP;
1600 break;
1601 case CHR_IOCTL_PP_READ_STATUS:
1602 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1603 return -ENOTSUP;
1604 *(uint8_t *)arg = b;
1605 break;
1606 default:
1607 return -ENOTSUP;
1608 }
1609 return 0;
1610 }
1611
1612 static CharDriverState *qemu_chr_open_pp_fd(int fd)
1613 {
1614 CharDriverState *chr;
1615
1616 chr = g_malloc0(sizeof(CharDriverState));
1617 chr->opaque = (void *)(intptr_t)fd;
1618 chr->chr_write = null_chr_write;
1619 chr->chr_ioctl = pp_ioctl;
1620 return chr;
1621 }
1622 #endif
1623
1624 #else /* _WIN32 */
1625
1626 typedef struct {
1627 int max_size;
1628 HANDLE hcom, hrecv, hsend;
1629 OVERLAPPED orecv, osend;
1630 BOOL fpipe;
1631 DWORD len;
1632 } WinCharState;
1633
1634 typedef struct {
1635 HANDLE hStdIn;
1636 HANDLE hInputReadyEvent;
1637 HANDLE hInputDoneEvent;
1638 HANDLE hInputThread;
1639 uint8_t win_stdio_buf;
1640 } WinStdioCharState;
1641
1642 #define NSENDBUF 2048
1643 #define NRECVBUF 2048
1644 #define MAXCONNECT 1
1645 #define NTIMEOUT 5000
1646
1647 static int win_chr_poll(void *opaque);
1648 static int win_chr_pipe_poll(void *opaque);
1649
1650 static void win_chr_close(CharDriverState *chr)
1651 {
1652 WinCharState *s = chr->opaque;
1653
1654 if (s->hsend) {
1655 CloseHandle(s->hsend);
1656 s->hsend = NULL;
1657 }
1658 if (s->hrecv) {
1659 CloseHandle(s->hrecv);
1660 s->hrecv = NULL;
1661 }
1662 if (s->hcom) {
1663 CloseHandle(s->hcom);
1664 s->hcom = NULL;
1665 }
1666 if (s->fpipe)
1667 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1668 else
1669 qemu_del_polling_cb(win_chr_poll, chr);
1670
1671 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1672 }
1673
1674 static int win_chr_init(CharDriverState *chr, const char *filename)
1675 {
1676 WinCharState *s = chr->opaque;
1677 COMMCONFIG comcfg;
1678 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1679 COMSTAT comstat;
1680 DWORD size;
1681 DWORD err;
1682
1683 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1684 if (!s->hsend) {
1685 fprintf(stderr, "Failed CreateEvent\n");
1686 goto fail;
1687 }
1688 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1689 if (!s->hrecv) {
1690 fprintf(stderr, "Failed CreateEvent\n");
1691 goto fail;
1692 }
1693
1694 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1695 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1696 if (s->hcom == INVALID_HANDLE_VALUE) {
1697 fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
1698 s->hcom = NULL;
1699 goto fail;
1700 }
1701
1702 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
1703 fprintf(stderr, "Failed SetupComm\n");
1704 goto fail;
1705 }
1706
1707 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1708 size = sizeof(COMMCONFIG);
1709 GetDefaultCommConfig(filename, &comcfg, &size);
1710 comcfg.dcb.DCBlength = sizeof(DCB);
1711 CommConfigDialog(filename, NULL, &comcfg);
1712
1713 if (!SetCommState(s->hcom, &comcfg.dcb)) {
1714 fprintf(stderr, "Failed SetCommState\n");
1715 goto fail;
1716 }
1717
1718 if (!SetCommMask(s->hcom, EV_ERR)) {
1719 fprintf(stderr, "Failed SetCommMask\n");
1720 goto fail;
1721 }
1722
1723 cto.ReadIntervalTimeout = MAXDWORD;
1724 if (!SetCommTimeouts(s->hcom, &cto)) {
1725 fprintf(stderr, "Failed SetCommTimeouts\n");
1726 goto fail;
1727 }
1728
1729 if (!ClearCommError(s->hcom, &err, &comstat)) {
1730 fprintf(stderr, "Failed ClearCommError\n");
1731 goto fail;
1732 }
1733 qemu_add_polling_cb(win_chr_poll, chr);
1734 return 0;
1735
1736 fail:
1737 win_chr_close(chr);
1738 return -1;
1739 }
1740
1741 static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1742 {
1743 WinCharState *s = chr->opaque;
1744 DWORD len, ret, size, err;
1745
1746 len = len1;
1747 ZeroMemory(&s->osend, sizeof(s->osend));
1748 s->osend.hEvent = s->hsend;
1749 while (len > 0) {
1750 if (s->hsend)
1751 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1752 else
1753 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1754 if (!ret) {
1755 err = GetLastError();
1756 if (err == ERROR_IO_PENDING) {
1757 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1758 if (ret) {
1759 buf += size;
1760 len -= size;
1761 } else {
1762 break;
1763 }
1764 } else {
1765 break;
1766 }
1767 } else {
1768 buf += size;
1769 len -= size;
1770 }
1771 }
1772 return len1 - len;
1773 }
1774
1775 static int win_chr_read_poll(CharDriverState *chr)
1776 {
1777 WinCharState *s = chr->opaque;
1778
1779 s->max_size = qemu_chr_be_can_write(chr);
1780 return s->max_size;
1781 }
1782
1783 static void win_chr_readfile(CharDriverState *chr)
1784 {
1785 WinCharState *s = chr->opaque;
1786 int ret, err;
1787 uint8_t buf[READ_BUF_LEN];
1788 DWORD size;
1789
1790 ZeroMemory(&s->orecv, sizeof(s->orecv));
1791 s->orecv.hEvent = s->hrecv;
1792 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
1793 if (!ret) {
1794 err = GetLastError();
1795 if (err == ERROR_IO_PENDING) {
1796 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
1797 }
1798 }
1799
1800 if (size > 0) {
1801 qemu_chr_be_write(chr, buf, size);
1802 }
1803 }
1804
1805 static void win_chr_read(CharDriverState *chr)
1806 {
1807 WinCharState *s = chr->opaque;
1808
1809 if (s->len > s->max_size)
1810 s->len = s->max_size;
1811 if (s->len == 0)
1812 return;
1813
1814 win_chr_readfile(chr);
1815 }
1816
1817 static int win_chr_poll(void *opaque)
1818 {
1819 CharDriverState *chr = opaque;
1820 WinCharState *s = chr->opaque;
1821 COMSTAT status;
1822 DWORD comerr;
1823
1824 ClearCommError(s->hcom, &comerr, &status);
1825 if (status.cbInQue > 0) {
1826 s->len = status.cbInQue;
1827 win_chr_read_poll(chr);
1828 win_chr_read(chr);
1829 return 1;
1830 }
1831 return 0;
1832 }
1833
1834 static CharDriverState *qemu_chr_open_win_path(const char *filename)
1835 {
1836 CharDriverState *chr;
1837 WinCharState *s;
1838
1839 chr = g_malloc0(sizeof(CharDriverState));
1840 s = g_malloc0(sizeof(WinCharState));
1841 chr->opaque = s;
1842 chr->chr_write = win_chr_write;
1843 chr->chr_close = win_chr_close;
1844
1845 if (win_chr_init(chr, filename) < 0) {
1846 g_free(s);
1847 g_free(chr);
1848 return NULL;
1849 }
1850 qemu_chr_be_generic_open(chr);
1851 return chr;
1852 }
1853
1854 static int win_chr_pipe_poll(void *opaque)
1855 {
1856 CharDriverState *chr = opaque;
1857 WinCharState *s = chr->opaque;
1858 DWORD size;
1859
1860 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
1861 if (size > 0) {
1862 s->len = size;
1863 win_chr_read_poll(chr);
1864 win_chr_read(chr);
1865 return 1;
1866 }
1867 return 0;
1868 }
1869
1870 static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
1871 {
1872 WinCharState *s = chr->opaque;
1873 OVERLAPPED ov;
1874 int ret;
1875 DWORD size;
1876 char openname[256];
1877
1878 s->fpipe = TRUE;
1879
1880 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1881 if (!s->hsend) {
1882 fprintf(stderr, "Failed CreateEvent\n");
1883 goto fail;
1884 }
1885 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1886 if (!s->hrecv) {
1887 fprintf(stderr, "Failed CreateEvent\n");
1888 goto fail;
1889 }
1890
1891 snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
1892 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
1893 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
1894 PIPE_WAIT,
1895 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
1896 if (s->hcom == INVALID_HANDLE_VALUE) {
1897 fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
1898 s->hcom = NULL;
1899 goto fail;
1900 }
1901
1902 ZeroMemory(&ov, sizeof(ov));
1903 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
1904 ret = ConnectNamedPipe(s->hcom, &ov);
1905 if (ret) {
1906 fprintf(stderr, "Failed ConnectNamedPipe\n");
1907 goto fail;
1908 }
1909
1910 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
1911 if (!ret) {
1912 fprintf(stderr, "Failed GetOverlappedResult\n");
1913 if (ov.hEvent) {
1914 CloseHandle(ov.hEvent);
1915 ov.hEvent = NULL;
1916 }
1917 goto fail;
1918 }
1919
1920 if (ov.hEvent) {
1921 CloseHandle(ov.hEvent);
1922 ov.hEvent = NULL;
1923 }
1924 qemu_add_polling_cb(win_chr_pipe_poll, chr);
1925 return 0;
1926
1927 fail:
1928 win_chr_close(chr);
1929 return -1;
1930 }
1931
1932
1933 static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
1934 {
1935 const char *filename = opts->device;
1936 CharDriverState *chr;
1937 WinCharState *s;
1938
1939 chr = g_malloc0(sizeof(CharDriverState));
1940 s = g_malloc0(sizeof(WinCharState));
1941 chr->opaque = s;
1942 chr->chr_write = win_chr_write;
1943 chr->chr_close = win_chr_close;
1944
1945 if (win_chr_pipe_init(chr, filename) < 0) {
1946 g_free(s);
1947 g_free(chr);
1948 return NULL;
1949 }
1950 qemu_chr_be_generic_open(chr);
1951 return chr;
1952 }
1953
1954 static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
1955 {
1956 CharDriverState *chr;
1957 WinCharState *s;
1958
1959 chr = g_malloc0(sizeof(CharDriverState));
1960 s = g_malloc0(sizeof(WinCharState));
1961 s->hcom = fd_out;
1962 chr->opaque = s;
1963 chr->chr_write = win_chr_write;
1964 qemu_chr_be_generic_open(chr);
1965 return chr;
1966 }
1967
1968 static CharDriverState *qemu_chr_open_win_con(void)
1969 {
1970 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
1971 }
1972
1973 static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
1974 {
1975 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
1976 DWORD dwSize;
1977 int len1;
1978
1979 len1 = len;
1980
1981 while (len1 > 0) {
1982 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
1983 break;
1984 }
1985 buf += dwSize;
1986 len1 -= dwSize;
1987 }
1988
1989 return len - len1;
1990 }
1991
1992 static void win_stdio_wait_func(void *opaque)
1993 {
1994 CharDriverState *chr = opaque;
1995 WinStdioCharState *stdio = chr->opaque;
1996 INPUT_RECORD buf[4];
1997 int ret;
1998 DWORD dwSize;
1999 int i;
2000
2001 ret = ReadConsoleInput(stdio->hStdIn, buf, sizeof(buf) / sizeof(*buf),
2002 &dwSize);
2003
2004 if (!ret) {
2005 /* Avoid error storm */
2006 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2007 return;
2008 }
2009
2010 for (i = 0; i < dwSize; i++) {
2011 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
2012
2013 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
2014 int j;
2015 if (kev->uChar.AsciiChar != 0) {
2016 for (j = 0; j < kev->wRepeatCount; j++) {
2017 if (qemu_chr_be_can_write(chr)) {
2018 uint8_t c = kev->uChar.AsciiChar;
2019 qemu_chr_be_write(chr, &c, 1);
2020 }
2021 }
2022 }
2023 }
2024 }
2025 }
2026
2027 static DWORD WINAPI win_stdio_thread(LPVOID param)
2028 {
2029 CharDriverState *chr = param;
2030 WinStdioCharState *stdio = chr->opaque;
2031 int ret;
2032 DWORD dwSize;
2033
2034 while (1) {
2035
2036 /* Wait for one byte */
2037 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
2038
2039 /* Exit in case of error, continue if nothing read */
2040 if (!ret) {
2041 break;
2042 }
2043 if (!dwSize) {
2044 continue;
2045 }
2046
2047 /* Some terminal emulator returns \r\n for Enter, just pass \n */
2048 if (stdio->win_stdio_buf == '\r') {
2049 continue;
2050 }
2051
2052 /* Signal the main thread and wait until the byte was eaten */
2053 if (!SetEvent(stdio->hInputReadyEvent)) {
2054 break;
2055 }
2056 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
2057 != WAIT_OBJECT_0) {
2058 break;
2059 }
2060 }
2061
2062 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2063 return 0;
2064 }
2065
2066 static void win_stdio_thread_wait_func(void *opaque)
2067 {
2068 CharDriverState *chr = opaque;
2069 WinStdioCharState *stdio = chr->opaque;
2070
2071 if (qemu_chr_be_can_write(chr)) {
2072 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
2073 }
2074
2075 SetEvent(stdio->hInputDoneEvent);
2076 }
2077
2078 static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
2079 {
2080 WinStdioCharState *stdio = chr->opaque;
2081 DWORD dwMode = 0;
2082
2083 GetConsoleMode(stdio->hStdIn, &dwMode);
2084
2085 if (echo) {
2086 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
2087 } else {
2088 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
2089 }
2090 }
2091
2092 static void win_stdio_close(CharDriverState *chr)
2093 {
2094 WinStdioCharState *stdio = chr->opaque;
2095
2096 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
2097 CloseHandle(stdio->hInputReadyEvent);
2098 }
2099 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
2100 CloseHandle(stdio->hInputDoneEvent);
2101 }
2102 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
2103 TerminateThread(stdio->hInputThread, 0);
2104 }
2105
2106 g_free(chr->opaque);
2107 g_free(chr);
2108 }
2109
2110 static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
2111 {
2112 CharDriverState *chr;
2113 WinStdioCharState *stdio;
2114 DWORD dwMode;
2115 int is_console = 0;
2116
2117 chr = g_malloc0(sizeof(CharDriverState));
2118 stdio = g_malloc0(sizeof(WinStdioCharState));
2119
2120 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
2121 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
2122 fprintf(stderr, "cannot open stdio: invalid handle\n");
2123 exit(1);
2124 }
2125
2126 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
2127
2128 chr->opaque = stdio;
2129 chr->chr_write = win_stdio_write;
2130 chr->chr_close = win_stdio_close;
2131
2132 if (is_console) {
2133 if (qemu_add_wait_object(stdio->hStdIn,
2134 win_stdio_wait_func, chr)) {
2135 fprintf(stderr, "qemu_add_wait_object: failed\n");
2136 }
2137 } else {
2138 DWORD dwId;
2139
2140 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2141 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2142 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
2143 chr, 0, &dwId);
2144
2145 if (stdio->hInputThread == INVALID_HANDLE_VALUE
2146 || stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
2147 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
2148 fprintf(stderr, "cannot create stdio thread or event\n");
2149 exit(1);
2150 }
2151 if (qemu_add_wait_object(stdio->hInputReadyEvent,
2152 win_stdio_thread_wait_func, chr)) {
2153 fprintf(stderr, "qemu_add_wait_object: failed\n");
2154 }
2155 }
2156
2157 dwMode |= ENABLE_LINE_INPUT;
2158
2159 if (is_console) {
2160 /* set the terminal in raw mode */
2161 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2162 dwMode |= ENABLE_PROCESSED_INPUT;
2163 }
2164
2165 SetConsoleMode(stdio->hStdIn, dwMode);
2166
2167 chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
2168 qemu_chr_fe_set_echo(chr, false);
2169
2170 return chr;
2171 }
2172 #endif /* !_WIN32 */
2173
2174
2175 /***********************************************************/
2176 /* UDP Net console */
2177
2178 typedef struct {
2179 int fd;
2180 GIOChannel *chan;
2181 guint tag;
2182 uint8_t buf[READ_BUF_LEN];
2183 int bufcnt;
2184 int bufptr;
2185 int max_size;
2186 } NetCharDriver;
2187
2188 static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2189 {
2190 NetCharDriver *s = chr->opaque;
2191 gsize bytes_written;
2192 GIOStatus status;
2193
2194 status = g_io_channel_write_chars(s->chan, (const gchar *)buf, len, &bytes_written, NULL);
2195 if (status == G_IO_STATUS_EOF) {
2196 return 0;
2197 } else if (status != G_IO_STATUS_NORMAL) {
2198 return -1;
2199 }
2200
2201 return bytes_written;
2202 }
2203
2204 static int udp_chr_read_poll(void *opaque)
2205 {
2206 CharDriverState *chr = opaque;
2207 NetCharDriver *s = chr->opaque;
2208
2209 s->max_size = qemu_chr_be_can_write(chr);
2210
2211 /* If there were any stray characters in the queue process them
2212 * first
2213 */
2214 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
2215 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
2216 s->bufptr++;
2217 s->max_size = qemu_chr_be_can_write(chr);
2218 }
2219 return s->max_size;
2220 }
2221
2222 static gboolean udp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
2223 {
2224 CharDriverState *chr = opaque;
2225 NetCharDriver *s = chr->opaque;
2226 gsize bytes_read = 0;
2227 GIOStatus status;
2228
2229 if (s->max_size == 0)
2230 return FALSE;
2231 status = g_io_channel_read_chars(s->chan, (gchar *)s->buf, sizeof(s->buf),
2232 &bytes_read, NULL);
2233 s->bufcnt = bytes_read;
2234 s->bufptr = s->bufcnt;
2235 if (status != G_IO_STATUS_NORMAL) {
2236 return FALSE;
2237 }
2238
2239 s->bufptr = 0;
2240 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
2241 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
2242 s->bufptr++;
2243 s->max_size = qemu_chr_be_can_write(chr);
2244 }
2245
2246 return TRUE;
2247 }
2248
2249 static void udp_chr_update_read_handler(CharDriverState *chr)
2250 {
2251 NetCharDriver *s = chr->opaque;
2252
2253 if (s->tag) {
2254 g_source_remove(s->tag);
2255 s->tag = 0;
2256 }
2257
2258 if (s->chan) {
2259 s->tag = io_add_watch_poll(s->chan, udp_chr_read_poll, udp_chr_read, chr);
2260 }
2261 }
2262
2263 static void udp_chr_close(CharDriverState *chr)
2264 {
2265 NetCharDriver *s = chr->opaque;
2266 if (s->tag) {
2267 g_source_remove(s->tag);
2268 }
2269 if (s->chan) {
2270 g_io_channel_unref(s->chan);
2271 closesocket(s->fd);
2272 }
2273 g_free(s);
2274 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2275 }
2276
2277 static CharDriverState *qemu_chr_open_udp_fd(int fd)
2278 {
2279 CharDriverState *chr = NULL;
2280 NetCharDriver *s = NULL;
2281
2282 chr = g_malloc0(sizeof(CharDriverState));
2283 s = g_malloc0(sizeof(NetCharDriver));
2284
2285 s->fd = fd;
2286 s->chan = io_channel_from_socket(s->fd);
2287 s->bufcnt = 0;
2288 s->bufptr = 0;
2289 chr->opaque = s;
2290 chr->chr_write = udp_chr_write;
2291 chr->chr_update_read_handler = udp_chr_update_read_handler;
2292 chr->chr_close = udp_chr_close;
2293 return chr;
2294 }
2295
2296 static CharDriverState *qemu_chr_open_udp(QemuOpts *opts)
2297 {
2298 Error *local_err = NULL;
2299 int fd = -1;
2300
2301 fd = inet_dgram_opts(opts, &local_err);
2302 if (fd < 0) {
2303 return NULL;
2304 }
2305 return qemu_chr_open_udp_fd(fd);
2306 }
2307
2308 /***********************************************************/
2309 /* TCP Net console */
2310
2311 typedef struct {
2312
2313 GIOChannel *chan, *listen_chan;
2314 guint tag, listen_tag;
2315 int fd, listen_fd;
2316 int connected;
2317 int max_size;
2318 int do_telnetopt;
2319 int do_nodelay;
2320 int is_unix;
2321 int msgfd;
2322 } TCPCharDriver;
2323
2324 static gboolean tcp_chr_accept(GIOChannel *chan, GIOCondition cond, void *opaque);
2325
2326 static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2327 {
2328 TCPCharDriver *s = chr->opaque;
2329 if (s->connected) {
2330 return io_channel_send(s->chan, buf, len);
2331 } else {
2332 /* XXX: indicate an error ? */
2333 return len;
2334 }
2335 }
2336
2337 static int tcp_chr_read_poll(void *opaque)
2338 {
2339 CharDriverState *chr = opaque;
2340 TCPCharDriver *s = chr->opaque;
2341 if (!s->connected)
2342 return 0;
2343 s->max_size = qemu_chr_be_can_write(chr);
2344 return s->max_size;
2345 }
2346
2347 #define IAC 255
2348 #define IAC_BREAK 243
2349 static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
2350 TCPCharDriver *s,
2351 uint8_t *buf, int *size)
2352 {
2353 /* Handle any telnet client's basic IAC options to satisfy char by
2354 * char mode with no echo. All IAC options will be removed from
2355 * the buf and the do_telnetopt variable will be used to track the
2356 * state of the width of the IAC information.
2357 *
2358 * IAC commands come in sets of 3 bytes with the exception of the
2359 * "IAC BREAK" command and the double IAC.
2360 */
2361
2362 int i;
2363 int j = 0;
2364
2365 for (i = 0; i < *size; i++) {
2366 if (s->do_telnetopt > 1) {
2367 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2368 /* Double IAC means send an IAC */
2369 if (j != i)
2370 buf[j] = buf[i];
2371 j++;
2372 s->do_telnetopt = 1;
2373 } else {
2374 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2375 /* Handle IAC break commands by sending a serial break */
2376 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
2377 s->do_telnetopt++;
2378 }
2379 s->do_telnetopt++;
2380 }
2381 if (s->do_telnetopt >= 4) {
2382 s->do_telnetopt = 1;
2383 }
2384 } else {
2385 if ((unsigned char)buf[i] == IAC) {
2386 s->do_telnetopt = 2;
2387 } else {
2388 if (j != i)
2389 buf[j] = buf[i];
2390 j++;
2391 }
2392 }
2393 }
2394 *size = j;
2395 }
2396
2397 static int tcp_get_msgfd(CharDriverState *chr)
2398 {
2399 TCPCharDriver *s = chr->opaque;
2400 int fd = s->msgfd;
2401 s->msgfd = -1;
2402 return fd;
2403 }
2404
2405 #ifndef _WIN32
2406 static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
2407 {
2408 TCPCharDriver *s = chr->opaque;
2409 struct cmsghdr *cmsg;
2410
2411 for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
2412 int fd;
2413
2414 if (cmsg->cmsg_len != CMSG_LEN(sizeof(int)) ||
2415 cmsg->cmsg_level != SOL_SOCKET ||
2416 cmsg->cmsg_type != SCM_RIGHTS)
2417 continue;
2418
2419 fd = *((int *)CMSG_DATA(cmsg));
2420 if (fd < 0)
2421 continue;
2422
2423 /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
2424 qemu_set_block(fd);
2425
2426 #ifndef MSG_CMSG_CLOEXEC
2427 qemu_set_cloexec(fd);
2428 #endif
2429 if (s->msgfd != -1)
2430 close(s->msgfd);
2431 s->msgfd = fd;
2432 }
2433 }
2434
2435 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2436 {
2437 TCPCharDriver *s = chr->opaque;
2438 struct msghdr msg = { NULL, };
2439 struct iovec iov[1];
2440 union {
2441 struct cmsghdr cmsg;
2442 char control[CMSG_SPACE(sizeof(int))];
2443 } msg_control;
2444 int flags = 0;
2445 ssize_t ret;
2446
2447 iov[0].iov_base = buf;
2448 iov[0].iov_len = len;
2449
2450 msg.msg_iov = iov;
2451 msg.msg_iovlen = 1;
2452 msg.msg_control = &msg_control;
2453 msg.msg_controllen = sizeof(msg_control);
2454
2455 #ifdef MSG_CMSG_CLOEXEC
2456 flags |= MSG_CMSG_CLOEXEC;
2457 #endif
2458 ret = recvmsg(s->fd, &msg, flags);
2459 if (ret > 0 && s->is_unix) {
2460 unix_process_msgfd(chr, &msg);
2461 }
2462
2463 return ret;
2464 }
2465 #else
2466 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2467 {
2468 TCPCharDriver *s = chr->opaque;
2469 return qemu_recv(s->fd, buf, len, 0);
2470 }
2471 #endif
2472
2473 static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
2474 {
2475 TCPCharDriver *s = chr->opaque;
2476 return g_io_create_watch(s->chan, cond);
2477 }
2478
2479 static gboolean tcp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
2480 {
2481 CharDriverState *chr = opaque;
2482 TCPCharDriver *s = chr->opaque;
2483 uint8_t buf[READ_BUF_LEN];
2484 int len, size;
2485
2486 if (!s->connected || s->max_size <= 0) {
2487 return FALSE;
2488 }
2489 len = sizeof(buf);
2490 if (len > s->max_size)
2491 len = s->max_size;
2492 size = tcp_chr_recv(chr, (void *)buf, len);
2493 if (size == 0) {
2494 /* connection closed */
2495 s->connected = 0;
2496 if (s->listen_chan) {
2497 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr);
2498 }
2499 g_source_remove(s->tag);
2500 s->tag = 0;
2501 g_io_channel_unref(s->chan);
2502 s->chan = NULL;
2503 closesocket(s->fd);
2504 s->fd = -1;
2505 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2506 } else if (size > 0) {
2507 if (s->do_telnetopt)
2508 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2509 if (size > 0)
2510 qemu_chr_be_write(chr, buf, size);
2511 }
2512
2513 return TRUE;
2514 }
2515
2516 #ifndef _WIN32
2517 CharDriverState *qemu_chr_open_eventfd(int eventfd)
2518 {
2519 return qemu_chr_open_fd(eventfd, eventfd);
2520 }
2521 #endif
2522
2523 static void tcp_chr_connect(void *opaque)
2524 {
2525 CharDriverState *chr = opaque;
2526 TCPCharDriver *s = chr->opaque;
2527
2528 s->connected = 1;
2529 if (s->chan) {
2530 s->tag = io_add_watch_poll(s->chan, tcp_chr_read_poll, tcp_chr_read, chr);
2531 }
2532 qemu_chr_be_generic_open(chr);
2533 }
2534
2535 #define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
2536 static void tcp_chr_telnet_init(int fd)
2537 {
2538 char buf[3];
2539 /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
2540 IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2541 send(fd, (char *)buf, 3, 0);
2542 IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2543 send(fd, (char *)buf, 3, 0);
2544 IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2545 send(fd, (char *)buf, 3, 0);
2546 IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2547 send(fd, (char *)buf, 3, 0);
2548 }
2549
2550 static int tcp_chr_add_client(CharDriverState *chr, int fd)
2551 {
2552 TCPCharDriver *s = chr->opaque;
2553 if (s->fd != -1)
2554 return -1;
2555
2556 qemu_set_nonblock(fd);
2557 if (s->do_nodelay)
2558 socket_set_nodelay(fd);
2559 s->fd = fd;
2560 s->chan = io_channel_from_socket(fd);
2561 g_source_remove(s->listen_tag);
2562 s->listen_tag = 0;
2563 tcp_chr_connect(chr);
2564
2565 return 0;
2566 }
2567
2568 static gboolean tcp_chr_accept(GIOChannel *channel, GIOCondition cond, void *opaque)
2569 {
2570 CharDriverState *chr = opaque;
2571 TCPCharDriver *s = chr->opaque;
2572 struct sockaddr_in saddr;
2573 #ifndef _WIN32
2574 struct sockaddr_un uaddr;
2575 #endif
2576 struct sockaddr *addr;
2577 socklen_t len;
2578 int fd;
2579
2580 for(;;) {
2581 #ifndef _WIN32
2582 if (s->is_unix) {
2583 len = sizeof(uaddr);
2584 addr = (struct sockaddr *)&uaddr;
2585 } else
2586 #endif
2587 {
2588 len = sizeof(saddr);
2589 addr = (struct sockaddr *)&saddr;
2590 }
2591 fd = qemu_accept(s->listen_fd, addr, &len);
2592 if (fd < 0 && errno != EINTR) {
2593 return FALSE;
2594 } else if (fd >= 0) {
2595 if (s->do_telnetopt)
2596 tcp_chr_telnet_init(fd);
2597 break;
2598 }
2599 }
2600 if (tcp_chr_add_client(chr, fd) < 0)
2601 close(fd);
2602
2603 return TRUE;
2604 }
2605
2606 static void tcp_chr_close(CharDriverState *chr)
2607 {
2608 TCPCharDriver *s = chr->opaque;
2609 if (s->fd >= 0) {
2610 if (s->tag) {
2611 g_source_remove(s->tag);
2612 }
2613 if (s->chan) {
2614 g_io_channel_unref(s->chan);
2615 }
2616 closesocket(s->fd);
2617 }
2618 if (s->listen_fd >= 0) {
2619 if (s->listen_tag) {
2620 g_source_remove(s->listen_tag);
2621 }
2622 if (s->listen_chan) {
2623 g_io_channel_unref(s->listen_chan);
2624 }
2625 closesocket(s->listen_fd);
2626 }
2627 g_free(s);
2628 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2629 }
2630
2631 static CharDriverState *qemu_chr_open_socket_fd(int fd, bool do_nodelay,
2632 bool is_listen, bool is_telnet,
2633 bool is_waitconnect,
2634 Error **errp)
2635 {
2636 CharDriverState *chr = NULL;
2637 TCPCharDriver *s = NULL;
2638 char host[NI_MAXHOST], serv[NI_MAXSERV];
2639 const char *left = "", *right = "";
2640 struct sockaddr_storage ss;
2641 socklen_t ss_len = sizeof(ss);
2642
2643 memset(&ss, 0, ss_len);
2644 if (getsockname(fd, (struct sockaddr *) &ss, &ss_len) != 0) {
2645 error_setg(errp, "getsockname: %s", strerror(errno));
2646 return NULL;
2647 }
2648
2649 chr = g_malloc0(sizeof(CharDriverState));
2650 s = g_malloc0(sizeof(TCPCharDriver));
2651
2652 s->connected = 0;
2653 s->fd = -1;
2654 s->listen_fd = -1;
2655 s->msgfd = -1;
2656
2657 chr->filename = g_malloc(256);
2658 switch (ss.ss_family) {
2659 #ifndef _WIN32
2660 case AF_UNIX:
2661 s->is_unix = 1;
2662 snprintf(chr->filename, 256, "unix:%s%s",
2663 ((struct sockaddr_un *)(&ss))->sun_path,
2664 is_listen ? ",server" : "");
2665 break;
2666 #endif
2667 case AF_INET6:
2668 left = "[";
2669 right = "]";
2670 /* fall through */
2671 case AF_INET:
2672 s->do_nodelay = do_nodelay;
2673 getnameinfo((struct sockaddr *) &ss, ss_len, host, sizeof(host),
2674 serv, sizeof(serv), NI_NUMERICHOST | NI_NUMERICSERV);
2675 snprintf(chr->filename, 256, "%s:%s%s%s:%s%s",
2676 is_telnet ? "telnet" : "tcp",
2677 left, host, right, serv,
2678 is_listen ? ",server" : "");
2679 break;
2680 }
2681
2682 chr->opaque = s;
2683 chr->chr_write = tcp_chr_write;
2684 chr->chr_close = tcp_chr_close;
2685 chr->get_msgfd = tcp_get_msgfd;
2686 chr->chr_add_client = tcp_chr_add_client;
2687 chr->chr_add_watch = tcp_chr_add_watch;
2688
2689 if (is_listen) {
2690 s->listen_fd = fd;
2691 s->listen_chan = io_channel_from_socket(s->listen_fd);
2692 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr);
2693 if (is_telnet) {
2694 s->do_telnetopt = 1;
2695 }
2696 } else {
2697 s->connected = 1;
2698 s->fd = fd;
2699 socket_set_nodelay(fd);
2700 s->chan = io_channel_from_socket(s->fd);
2701 tcp_chr_connect(chr);
2702 }
2703
2704 if (is_listen && is_waitconnect) {
2705 printf("QEMU waiting for connection on: %s\n",
2706 chr->filename);
2707 tcp_chr_accept(s->listen_chan, G_IO_IN, chr);
2708 qemu_set_nonblock(s->listen_fd);
2709 }
2710 return chr;
2711 }
2712
2713 static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
2714 {
2715 CharDriverState *chr = NULL;
2716 Error *local_err = NULL;
2717 int fd = -1;
2718 int is_listen;
2719 int is_waitconnect;
2720 int do_nodelay;
2721 int is_unix;
2722 int is_telnet;
2723
2724 is_listen = qemu_opt_get_bool(opts, "server", 0);
2725 is_waitconnect = qemu_opt_get_bool(opts, "wait", 1);
2726 is_telnet = qemu_opt_get_bool(opts, "telnet", 0);
2727 do_nodelay = !qemu_opt_get_bool(opts, "delay", 1);
2728 is_unix = qemu_opt_get(opts, "path") != NULL;
2729 if (!is_listen)
2730 is_waitconnect = 0;
2731
2732 if (is_unix) {
2733 if (is_listen) {
2734 fd = unix_listen_opts(opts, &local_err);
2735 } else {
2736 fd = unix_connect_opts(opts, &local_err, NULL, NULL);
2737 }
2738 } else {
2739 if (is_listen) {
2740 fd = inet_listen_opts(opts, 0, &local_err);
2741 } else {
2742 fd = inet_connect_opts(opts, &local_err, NULL, NULL);
2743 }
2744 }
2745 if (fd < 0) {
2746 goto fail;
2747 }
2748
2749 if (!is_waitconnect)
2750 qemu_set_nonblock(fd);
2751
2752 chr = qemu_chr_open_socket_fd(fd, do_nodelay, is_listen, is_telnet,
2753 is_waitconnect, &local_err);
2754 if (error_is_set(&local_err)) {
2755 goto fail;
2756 }
2757 return chr;
2758
2759
2760 fail:
2761 if (local_err) {
2762 qerror_report_err(local_err);
2763 error_free(local_err);
2764 }
2765 if (fd >= 0) {
2766 closesocket(fd);
2767 }
2768 if (chr) {
2769 g_free(chr->opaque);
2770 g_free(chr);
2771 }
2772 return NULL;
2773 }
2774
2775 /*********************************************************/
2776 /* Ring buffer chardev */
2777
2778 typedef struct {
2779 size_t size;
2780 size_t prod;
2781 size_t cons;
2782 uint8_t *cbuf;
2783 } RingBufCharDriver;
2784
2785 static size_t ringbuf_count(const CharDriverState *chr)
2786 {
2787 const RingBufCharDriver *d = chr->opaque;
2788
2789 return d->prod - d->cons;
2790 }
2791
2792 static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2793 {
2794 RingBufCharDriver *d = chr->opaque;
2795 int i;
2796
2797 if (!buf || (len < 0)) {
2798 return -1;
2799 }
2800
2801 for (i = 0; i < len; i++ ) {
2802 d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
2803 if (d->prod - d->cons > d->size) {
2804 d->cons = d->prod - d->size;
2805 }
2806 }
2807
2808 return 0;
2809 }
2810
2811 static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len)
2812 {
2813 RingBufCharDriver *d = chr->opaque;
2814 int i;
2815
2816 for (i = 0; i < len && d->cons != d->prod; i++) {
2817 buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
2818 }
2819
2820 return i;
2821 }
2822
2823 static void ringbuf_chr_close(struct CharDriverState *chr)
2824 {
2825 RingBufCharDriver *d = chr->opaque;
2826
2827 g_free(d->cbuf);
2828 g_free(d);
2829 chr->opaque = NULL;
2830 }
2831
2832 static CharDriverState *qemu_chr_open_ringbuf(ChardevRingbuf *opts,
2833 Error **errp)
2834 {
2835 CharDriverState *chr;
2836 RingBufCharDriver *d;
2837
2838 chr = g_malloc0(sizeof(CharDriverState));
2839 d = g_malloc(sizeof(*d));
2840
2841 d->size = opts->has_size ? opts->size : 65536;
2842
2843 /* The size must be power of 2 */
2844 if (d->size & (d->size - 1)) {
2845 error_setg(errp, "size of ringbuf chardev must be power of two");
2846 goto fail;
2847 }
2848
2849 d->prod = 0;
2850 d->cons = 0;
2851 d->cbuf = g_malloc0(d->size);
2852
2853 chr->opaque = d;
2854 chr->chr_write = ringbuf_chr_write;
2855 chr->chr_close = ringbuf_chr_close;
2856
2857 return chr;
2858
2859 fail:
2860 g_free(d);
2861 g_free(chr);
2862 return NULL;
2863 }
2864
2865 static bool chr_is_ringbuf(const CharDriverState *chr)
2866 {
2867 return chr->chr_write == ringbuf_chr_write;
2868 }
2869
2870 void qmp_ringbuf_write(const char *device, const char *data,
2871 bool has_format, enum DataFormat format,
2872 Error **errp)
2873 {
2874 CharDriverState *chr;
2875 const uint8_t *write_data;
2876 int ret;
2877 size_t write_count;
2878
2879 chr = qemu_chr_find(device);
2880 if (!chr) {
2881 error_setg(errp, "Device '%s' not found", device);
2882 return;
2883 }
2884
2885 if (!chr_is_ringbuf(chr)) {
2886 error_setg(errp,"%s is not a ringbuf device", device);
2887 return;
2888 }
2889
2890 if (has_format && (format == DATA_FORMAT_BASE64)) {
2891 write_data = g_base64_decode(data, &write_count);
2892 } else {
2893 write_data = (uint8_t *)data;
2894 write_count = strlen(data);
2895 }
2896
2897 ret = ringbuf_chr_write(chr, write_data, write_count);
2898
2899 if (write_data != (uint8_t *)data) {
2900 g_free((void *)write_data);
2901 }
2902
2903 if (ret < 0) {
2904 error_setg(errp, "Failed to write to device %s", device);
2905 return;
2906 }
2907 }
2908
2909 char *qmp_ringbuf_read(const char *device, int64_t size,
2910 bool has_format, enum DataFormat format,
2911 Error **errp)
2912 {
2913 CharDriverState *chr;
2914 uint8_t *read_data;
2915 size_t count;
2916 char *data;
2917
2918 chr = qemu_chr_find(device);
2919 if (!chr) {
2920 error_setg(errp, "Device '%s' not found", device);
2921 return NULL;
2922 }
2923
2924 if (!chr_is_ringbuf(chr)) {
2925 error_setg(errp,"%s is not a ringbuf device", device);
2926 return NULL;
2927 }
2928
2929 if (size <= 0) {
2930 error_setg(errp, "size must be greater than zero");
2931 return NULL;
2932 }
2933
2934 count = ringbuf_count(chr);
2935 size = size > count ? count : size;
2936 read_data = g_malloc(size + 1);
2937
2938 ringbuf_chr_read(chr, read_data, size);
2939
2940 if (has_format && (format == DATA_FORMAT_BASE64)) {
2941 data = g_base64_encode(read_data, size);
2942 g_free(read_data);
2943 } else {
2944 /*
2945 * FIXME should read only complete, valid UTF-8 characters up
2946 * to @size bytes. Invalid sequences should be replaced by a
2947 * suitable replacement character. Except when (and only
2948 * when) ring buffer lost characters since last read, initial
2949 * continuation characters should be dropped.
2950 */
2951 read_data[size] = 0;
2952 data = (char *)read_data;
2953 }
2954
2955 return data;
2956 }
2957
2958 QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
2959 {
2960 char host[65], port[33], width[8], height[8];
2961 int pos;
2962 const char *p;
2963 QemuOpts *opts;
2964 Error *local_err = NULL;
2965
2966 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
2967 if (error_is_set(&local_err)) {
2968 qerror_report_err(local_err);
2969 error_free(local_err);
2970 return NULL;
2971 }
2972
2973 if (strstart(filename, "mon:", &p)) {
2974 filename = p;
2975 qemu_opt_set(opts, "mux", "on");
2976 }
2977
2978 if (strcmp(filename, "null") == 0 ||
2979 strcmp(filename, "pty") == 0 ||
2980 strcmp(filename, "msmouse") == 0 ||
2981 strcmp(filename, "braille") == 0 ||
2982 strcmp(filename, "stdio") == 0) {
2983 qemu_opt_set(opts, "backend", filename);
2984 return opts;
2985 }
2986 if (strstart(filename, "vc", &p)) {
2987 qemu_opt_set(opts, "backend", "vc");
2988 if (*p == ':') {
2989 if (sscanf(p+1, "%8[0-9]x%8[0-9]", width, height) == 2) {
2990 /* pixels */
2991 qemu_opt_set(opts, "width", width);
2992 qemu_opt_set(opts, "height", height);
2993 } else if (sscanf(p+1, "%8[0-9]Cx%8[0-9]C", width, height) == 2) {
2994 /* chars */
2995 qemu_opt_set(opts, "cols", width);
2996 qemu_opt_set(opts, "rows", height);
2997 } else {
2998 goto fail;
2999 }
3000 }
3001 return opts;
3002 }
3003 if (strcmp(filename, "con:") == 0) {
3004 qemu_opt_set(opts, "backend", "console");
3005 return opts;
3006 }
3007 if (strstart(filename, "COM", NULL)) {
3008 qemu_opt_set(opts, "backend", "serial");
3009 qemu_opt_set(opts, "path", filename);
3010 return opts;
3011 }
3012 if (strstart(filename, "file:", &p)) {
3013 qemu_opt_set(opts, "backend", "file");
3014 qemu_opt_set(opts, "path", p);
3015 return opts;
3016 }
3017 if (strstart(filename, "pipe:", &p)) {
3018 qemu_opt_set(opts, "backend", "pipe");
3019 qemu_opt_set(opts, "path", p);
3020 return opts;
3021 }
3022 if (strstart(filename, "tcp:", &p) ||
3023 strstart(filename, "telnet:", &p)) {
3024 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3025 host[0] = 0;
3026 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
3027 goto fail;
3028 }
3029 qemu_opt_set(opts, "backend", "socket");
3030 qemu_opt_set(opts, "host", host);
3031 qemu_opt_set(opts, "port", port);
3032 if (p[pos] == ',') {
3033 if (qemu_opts_do_parse(opts, p+pos+1, NULL) != 0)
3034 goto fail;
3035 }
3036 if (strstart(filename, "telnet:", &p))
3037 qemu_opt_set(opts, "telnet", "on");
3038 return opts;
3039 }
3040 if (strstart(filename, "udp:", &p)) {
3041 qemu_opt_set(opts, "backend", "udp");
3042 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
3043 host[0] = 0;
3044 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
3045 goto fail;
3046 }
3047 }
3048 qemu_opt_set(opts, "host", host);
3049 qemu_opt_set(opts, "port", port);
3050 if (p[pos] == '@') {
3051 p += pos + 1;
3052 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3053 host[0] = 0;
3054 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
3055 goto fail;
3056 }
3057 }
3058 qemu_opt_set(opts, "localaddr", host);
3059 qemu_opt_set(opts, "localport", port);
3060 }
3061 return opts;
3062 }
3063 if (strstart(filename, "unix:", &p)) {
3064 qemu_opt_set(opts, "backend", "socket");
3065 if (qemu_opts_do_parse(opts, p, "path") != 0)
3066 goto fail;
3067 return opts;
3068 }
3069 if (strstart(filename, "/dev/parport", NULL) ||
3070 strstart(filename, "/dev/ppi", NULL)) {
3071 qemu_opt_set(opts, "backend", "parport");
3072 qemu_opt_set(opts, "path", filename);
3073 return opts;
3074 }
3075 if (strstart(filename, "/dev/", NULL)) {
3076 qemu_opt_set(opts, "backend", "tty");
3077 qemu_opt_set(opts, "path", filename);
3078 return opts;
3079 }
3080
3081 fail:
3082 qemu_opts_del(opts);
3083 return NULL;
3084 }
3085
3086 static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
3087 Error **errp)
3088 {
3089 const char *path = qemu_opt_get(opts, "path");
3090
3091 if (path == NULL) {
3092 error_setg(errp, "chardev: file: no filename given");
3093 return;
3094 }
3095 backend->file = g_new0(ChardevFile, 1);
3096 backend->file->out = g_strdup(path);
3097 }
3098
3099 static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
3100 Error **errp)
3101 {
3102 backend->stdio = g_new0(ChardevStdio, 1);
3103 backend->stdio->has_signal = true;
3104 backend->stdio->signal =
3105 qemu_opt_get_bool(opts, "signal", display_type != DT_NOGRAPHIC);
3106 }
3107
3108 static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
3109 Error **errp)
3110 {
3111 const char *device = qemu_opt_get(opts, "path");
3112
3113 if (device == NULL) {
3114 error_setg(errp, "chardev: serial/tty: no device path given");
3115 return;
3116 }
3117 backend->serial = g_new0(ChardevHostdev, 1);
3118 backend->serial->device = g_strdup(device);
3119 }
3120
3121 static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
3122 Error **errp)
3123 {
3124 const char *device = qemu_opt_get(opts, "path");
3125
3126 if (device == NULL) {
3127 error_setg(errp, "chardev: parallel: no device path given");
3128 return;
3129 }
3130 backend->parallel = g_new0(ChardevHostdev, 1);
3131 backend->parallel->device = g_strdup(device);
3132 }
3133
3134 static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
3135 Error **errp)
3136 {
3137 const char *device = qemu_opt_get(opts, "path");
3138
3139 if (device == NULL) {
3140 error_setg(errp, "chardev: pipe: no device path given");
3141 return;
3142 }
3143 backend->pipe = g_new0(ChardevHostdev, 1);
3144 backend->pipe->device = g_strdup(device);
3145 }
3146
3147 static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
3148 Error **errp)
3149 {
3150 int val;
3151
3152 backend->memory = g_new0(ChardevRingbuf, 1);
3153
3154 val = qemu_opt_get_number(opts, "size", 0);
3155 if (val != 0) {
3156 backend->memory->has_size = true;
3157 backend->memory->size = val;
3158 }
3159 }
3160
3161 typedef struct CharDriver {
3162 const char *name;
3163 /* old, pre qapi */
3164 CharDriverState *(*open)(QemuOpts *opts);
3165 /* new, qapi-based */
3166 int kind;
3167 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
3168 } CharDriver;
3169
3170 static GSList *backends;
3171
3172 void register_char_driver(const char *name, CharDriverState *(*open)(QemuOpts *))
3173 {
3174 CharDriver *s;
3175
3176 s = g_malloc0(sizeof(*s));
3177 s->name = g_strdup(name);
3178 s->open = open;
3179
3180 backends = g_slist_append(backends, s);
3181 }
3182
3183 void register_char_driver_qapi(const char *name, int kind,
3184 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp))
3185 {
3186 CharDriver *s;
3187
3188 s = g_malloc0(sizeof(*s));
3189 s->name = g_strdup(name);
3190 s->kind = kind;
3191 s->parse = parse;
3192
3193 backends = g_slist_append(backends, s);
3194 }
3195
3196 CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
3197 void (*init)(struct CharDriverState *s),
3198 Error **errp)
3199 {
3200 CharDriver *cd;
3201 CharDriverState *chr;
3202 GSList *i;
3203
3204 if (qemu_opts_id(opts) == NULL) {
3205 error_setg(errp, "chardev: no id specified");
3206 goto err;
3207 }
3208
3209 if (qemu_opt_get(opts, "backend") == NULL) {
3210 error_setg(errp, "chardev: \"%s\" missing backend",
3211 qemu_opts_id(opts));
3212 goto err;
3213 }
3214 for (i = backends; i; i = i->next) {
3215 cd = i->data;
3216
3217 if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) {
3218 break;
3219 }
3220 }
3221 if (i == NULL) {
3222 error_setg(errp, "chardev: backend \"%s\" not found",
3223 qemu_opt_get(opts, "backend"));
3224 return NULL;
3225 }
3226
3227 if (!cd->open) {
3228 /* using new, qapi init */
3229 ChardevBackend *backend = g_new0(ChardevBackend, 1);
3230 ChardevReturn *ret = NULL;
3231 const char *id = qemu_opts_id(opts);
3232 const char *bid = NULL;
3233
3234 if (qemu_opt_get_bool(opts, "mux", 0)) {
3235 bid = g_strdup_printf("%s-base", id);
3236 }
3237
3238 chr = NULL;
3239 backend->kind = cd->kind;
3240 if (cd->parse) {
3241 cd->parse(opts, backend, errp);
3242 if (error_is_set(errp)) {
3243 goto qapi_out;
3244 }
3245 }
3246 ret = qmp_chardev_add(bid ? bid : id, backend, errp);
3247 if (error_is_set(errp)) {
3248 goto qapi_out;
3249 }
3250
3251 if (bid) {
3252 qapi_free_ChardevBackend(backend);
3253 qapi_free_ChardevReturn(ret);
3254 backend = g_new0(ChardevBackend, 1);
3255 backend->mux = g_new0(ChardevMux, 1);
3256 backend->kind = CHARDEV_BACKEND_KIND_MUX;
3257 backend->mux->chardev = g_strdup(bid);
3258 ret = qmp_chardev_add(id, backend, errp);
3259 if (error_is_set(errp)) {
3260 goto qapi_out;
3261 }
3262 }
3263
3264 chr = qemu_chr_find(id);
3265
3266 qapi_out:
3267 qapi_free_ChardevBackend(backend);
3268 qapi_free_ChardevReturn(ret);
3269 return chr;
3270 }
3271
3272 chr = cd->open(opts);
3273 if (!chr) {
3274 error_setg(errp, "chardev: opening backend \"%s\" failed",
3275 qemu_opt_get(opts, "backend"));
3276 goto err;
3277 }
3278
3279 if (!chr->filename)
3280 chr->filename = g_strdup(qemu_opt_get(opts, "backend"));
3281 chr->init = init;
3282 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3283
3284 if (qemu_opt_get_bool(opts, "mux", 0)) {
3285 CharDriverState *base = chr;
3286 int len = strlen(qemu_opts_id(opts)) + 6;
3287 base->label = g_malloc(len);
3288 snprintf(base->label, len, "%s-base", qemu_opts_id(opts));
3289 chr = qemu_chr_open_mux(base);
3290 chr->filename = base->filename;
3291 chr->avail_connections = MAX_MUX;
3292 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3293 } else {
3294 chr->avail_connections = 1;
3295 }
3296 chr->label = g_strdup(qemu_opts_id(opts));
3297 chr->opts = opts;
3298 return chr;
3299
3300 err:
3301 qemu_opts_del(opts);
3302 return NULL;
3303 }
3304
3305 CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
3306 {
3307 const char *p;
3308 CharDriverState *chr;
3309 QemuOpts *opts;
3310 Error *err = NULL;
3311
3312 if (strstart(filename, "chardev:", &p)) {
3313 return qemu_chr_find(p);
3314 }
3315
3316 opts = qemu_chr_parse_compat(label, filename);
3317 if (!opts)
3318 return NULL;
3319
3320 chr = qemu_chr_new_from_opts(opts, init, &err);
3321 if (error_is_set(&err)) {
3322 fprintf(stderr, "%s\n", error_get_pretty(err));
3323 error_free(err);
3324 }
3325 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
3326 qemu_chr_fe_claim_no_fail(chr);
3327 monitor_init(chr, MONITOR_USE_READLINE);
3328 }
3329 return chr;
3330 }
3331
3332 void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo)
3333 {
3334 if (chr->chr_set_echo) {
3335 chr->chr_set_echo(chr, echo);
3336 }
3337 }
3338
3339 void qemu_chr_fe_set_open(struct CharDriverState *chr, int fe_open)
3340 {
3341 if (chr->fe_open == fe_open) {
3342 return;
3343 }
3344 chr->fe_open = fe_open;
3345 if (chr->chr_set_fe_open) {
3346 chr->chr_set_fe_open(chr, fe_open);
3347 }
3348 }
3349
3350 int qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond,
3351 GIOFunc func, void *user_data)
3352 {
3353 GSource *src;
3354 guint tag;
3355
3356 if (s->chr_add_watch == NULL) {
3357 return -ENOSYS;
3358 }
3359
3360 src = s->chr_add_watch(s, cond);
3361 g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
3362 tag = g_source_attach(src, NULL);
3363 g_source_unref(src);
3364
3365 return tag;
3366 }
3367
3368 int qemu_chr_fe_claim(CharDriverState *s)
3369 {
3370 if (s->avail_connections < 1) {
3371 return -1;
3372 }
3373 s->avail_connections--;
3374 return 0;
3375 }
3376
3377 void qemu_chr_fe_claim_no_fail(CharDriverState *s)
3378 {
3379 if (qemu_chr_fe_claim(s) != 0) {
3380 fprintf(stderr, "%s: error chardev \"%s\" already used\n",
3381 __func__, s->label);
3382 exit(1);
3383 }
3384 }
3385
3386 void qemu_chr_fe_release(CharDriverState *s)
3387 {
3388 s->avail_connections++;
3389 }
3390
3391 void qemu_chr_delete(CharDriverState *chr)
3392 {
3393 QTAILQ_REMOVE(&chardevs, chr, next);
3394 if (chr->chr_close) {
3395 chr->chr_close(chr);
3396 }
3397 g_free(chr->filename);
3398 g_free(chr->label);
3399 if (chr->opts) {
3400 qemu_opts_del(chr->opts);
3401 }
3402 g_free(chr);
3403 }
3404
3405 ChardevInfoList *qmp_query_chardev(Error **errp)
3406 {
3407 ChardevInfoList *chr_list = NULL;
3408 CharDriverState *chr;
3409
3410 QTAILQ_FOREACH(chr, &chardevs, next) {
3411 ChardevInfoList *info = g_malloc0(sizeof(*info));
3412 info->value = g_malloc0(sizeof(*info->value));
3413 info->value->label = g_strdup(chr->label);
3414 info->value->filename = g_strdup(chr->filename);
3415
3416 info->next = chr_list;
3417 chr_list = info;
3418 }
3419
3420 return chr_list;
3421 }
3422
3423 CharDriverState *qemu_chr_find(const char *name)
3424 {
3425 CharDriverState *chr;
3426
3427 QTAILQ_FOREACH(chr, &chardevs, next) {
3428 if (strcmp(chr->label, name) != 0)
3429 continue;
3430 return chr;
3431 }
3432 return NULL;
3433 }
3434
3435 /* Get a character (serial) device interface. */
3436 CharDriverState *qemu_char_get_next_serial(void)
3437 {
3438 static int next_serial;
3439 CharDriverState *chr;
3440
3441 /* FIXME: This function needs to go away: use chardev properties! */
3442
3443 while (next_serial < MAX_SERIAL_PORTS && serial_hds[next_serial]) {
3444 chr = serial_hds[next_serial++];
3445 qemu_chr_fe_claim_no_fail(chr);
3446 return chr;
3447 }
3448 return NULL;
3449 }
3450
3451 QemuOptsList qemu_chardev_opts = {
3452 .name = "chardev",
3453 .implied_opt_name = "backend",
3454 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
3455 .desc = {
3456 {
3457 .name = "backend",
3458 .type = QEMU_OPT_STRING,
3459 },{
3460 .name = "path",
3461 .type = QEMU_OPT_STRING,
3462 },{
3463 .name = "host",
3464 .type = QEMU_OPT_STRING,
3465 },{
3466 .name = "port",
3467 .type = QEMU_OPT_STRING,
3468 },{
3469 .name = "localaddr",
3470 .type = QEMU_OPT_STRING,
3471 },{
3472 .name = "localport",
3473 .type = QEMU_OPT_STRING,
3474 },{
3475 .name = "to",
3476 .type = QEMU_OPT_NUMBER,
3477 },{
3478 .name = "ipv4",
3479 .type = QEMU_OPT_BOOL,
3480 },{
3481 .name = "ipv6",
3482 .type = QEMU_OPT_BOOL,
3483 },{
3484 .name = "wait",
3485 .type = QEMU_OPT_BOOL,
3486 },{
3487 .name = "server",
3488 .type = QEMU_OPT_BOOL,
3489 },{
3490 .name = "delay",
3491 .type = QEMU_OPT_BOOL,
3492 },{
3493 .name = "telnet",
3494 .type = QEMU_OPT_BOOL,
3495 },{
3496 .name = "width",
3497 .type = QEMU_OPT_NUMBER,
3498 },{
3499 .name = "height",
3500 .type = QEMU_OPT_NUMBER,
3501 },{
3502 .name = "cols",
3503 .type = QEMU_OPT_NUMBER,
3504 },{
3505 .name = "rows",
3506 .type = QEMU_OPT_NUMBER,
3507 },{
3508 .name = "mux",
3509 .type = QEMU_OPT_BOOL,
3510 },{
3511 .name = "signal",
3512 .type = QEMU_OPT_BOOL,
3513 },{
3514 .name = "name",
3515 .type = QEMU_OPT_STRING,
3516 },{
3517 .name = "debug",
3518 .type = QEMU_OPT_NUMBER,
3519 },{
3520 .name = "size",
3521 .type = QEMU_OPT_SIZE,
3522 },
3523 { /* end of list */ }
3524 },
3525 };
3526
3527 #ifdef _WIN32
3528
3529 static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
3530 {
3531 HANDLE out;
3532
3533 if (file->in) {
3534 error_setg(errp, "input file not supported");
3535 return NULL;
3536 }
3537
3538 out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
3539 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
3540 if (out == INVALID_HANDLE_VALUE) {
3541 error_setg(errp, "open %s failed", file->out);
3542 return NULL;
3543 }
3544 return qemu_chr_open_win_file(out);
3545 }
3546
3547 static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
3548 Error **errp)
3549 {
3550 return qemu_chr_open_win_path(serial->device);
3551 }
3552
3553 static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
3554 Error **errp)
3555 {
3556 error_setg(errp, "character device backend type 'parallel' not supported");
3557 return NULL;
3558 }
3559
3560 #else /* WIN32 */
3561
3562 static int qmp_chardev_open_file_source(char *src, int flags,
3563 Error **errp)
3564 {
3565 int fd = -1;
3566
3567 TFR(fd = qemu_open(src, flags, 0666));
3568 if (fd == -1) {
3569 error_setg(errp, "open %s: %s", src, strerror(errno));
3570 }
3571 return fd;
3572 }
3573
3574 static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
3575 {
3576 int flags, in = -1, out = -1;
3577
3578 flags = O_WRONLY | O_TRUNC | O_CREAT | O_BINARY;
3579 out = qmp_chardev_open_file_source(file->out, flags, errp);
3580 if (error_is_set(errp)) {
3581 return NULL;
3582 }
3583
3584 if (file->in) {
3585 flags = O_RDONLY;
3586 in = qmp_chardev_open_file_source(file->in, flags, errp);
3587 if (error_is_set(errp)) {
3588 qemu_close(out);
3589 return NULL;
3590 }
3591 }
3592
3593 return qemu_chr_open_fd(in, out);
3594 }
3595
3596 static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
3597 Error **errp)
3598 {
3599 #ifdef HAVE_CHARDEV_TTY
3600 int fd;
3601
3602 fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
3603 if (error_is_set(errp)) {
3604 return NULL;
3605 }
3606 qemu_set_nonblock(fd);
3607 return qemu_chr_open_tty_fd(fd);
3608 #else
3609 error_setg(errp, "character device backend type 'serial' not supported");
3610 return NULL;
3611 #endif
3612 }
3613
3614 static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
3615 Error **errp)
3616 {
3617 #ifdef HAVE_CHARDEV_PARPORT
3618 int fd;
3619
3620 fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
3621 if (error_is_set(errp)) {
3622 return NULL;
3623 }
3624 return qemu_chr_open_pp_fd(fd);
3625 #else
3626 error_setg(errp, "character device backend type 'parallel' not supported");
3627 return NULL;
3628 #endif
3629 }
3630
3631 #endif /* WIN32 */
3632
3633 static CharDriverState *qmp_chardev_open_socket(ChardevSocket *sock,
3634 Error **errp)
3635 {
3636 SocketAddress *addr = sock->addr;
3637 bool do_nodelay = sock->has_nodelay ? sock->nodelay : false;
3638 bool is_listen = sock->has_server ? sock->server : true;
3639 bool is_telnet = sock->has_telnet ? sock->telnet : false;
3640 bool is_waitconnect = sock->has_wait ? sock->wait : false;
3641 int fd;
3642
3643 if (is_listen) {
3644 fd = socket_listen(addr, errp);
3645 } else {
3646 fd = socket_connect(addr, errp, NULL, NULL);
3647 }
3648 if (error_is_set(errp)) {
3649 return NULL;
3650 }
3651 return qemu_chr_open_socket_fd(fd, do_nodelay, is_listen,
3652 is_telnet, is_waitconnect, errp);
3653 }
3654
3655 static CharDriverState *qmp_chardev_open_dgram(ChardevDgram *dgram,
3656 Error **errp)
3657 {
3658 int fd;
3659
3660 fd = socket_dgram(dgram->remote, dgram->local, errp);
3661 if (error_is_set(errp)) {
3662 return NULL;
3663 }
3664 return qemu_chr_open_udp_fd(fd);
3665 }
3666
3667 ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
3668 Error **errp)
3669 {
3670 ChardevReturn *ret = g_new0(ChardevReturn, 1);
3671 CharDriverState *base, *chr = NULL;
3672
3673 chr = qemu_chr_find(id);
3674 if (chr) {
3675 error_setg(errp, "Chardev '%s' already exists", id);
3676 g_free(ret);
3677 return NULL;
3678 }
3679
3680 switch (backend->kind) {
3681 case CHARDEV_BACKEND_KIND_FILE:
3682 chr = qmp_chardev_open_file(backend->file, errp);
3683 break;
3684 case CHARDEV_BACKEND_KIND_SERIAL:
3685 chr = qmp_chardev_open_serial(backend->serial, errp);
3686 break;
3687 case CHARDEV_BACKEND_KIND_PARALLEL:
3688 chr = qmp_chardev_open_parallel(backend->parallel, errp);
3689 break;
3690 case CHARDEV_BACKEND_KIND_PIPE:
3691 chr = qemu_chr_open_pipe(backend->pipe);
3692 break;
3693 case CHARDEV_BACKEND_KIND_SOCKET:
3694 chr = qmp_chardev_open_socket(backend->socket, errp);
3695 break;
3696 case CHARDEV_BACKEND_KIND_DGRAM:
3697 chr = qmp_chardev_open_dgram(backend->dgram, errp);
3698 break;
3699 #ifdef HAVE_CHARDEV_TTY
3700 case CHARDEV_BACKEND_KIND_PTY:
3701 chr = qemu_chr_open_pty(id, ret);
3702 break;
3703 #endif
3704 case CHARDEV_BACKEND_KIND_NULL:
3705 chr = qemu_chr_open_null();
3706 break;
3707 case CHARDEV_BACKEND_KIND_MUX:
3708 base = qemu_chr_find(backend->mux->chardev);
3709 if (base == NULL) {
3710 error_setg(errp, "mux: base chardev %s not found",
3711 backend->mux->chardev);
3712 break;
3713 }
3714 chr = qemu_chr_open_mux(base);
3715 break;
3716 case CHARDEV_BACKEND_KIND_MSMOUSE:
3717 chr = qemu_chr_open_msmouse();
3718 break;
3719 #ifdef CONFIG_BRLAPI
3720 case CHARDEV_BACKEND_KIND_BRAILLE:
3721 chr = chr_baum_init();
3722 break;
3723 #endif
3724 case CHARDEV_BACKEND_KIND_STDIO:
3725 chr = qemu_chr_open_stdio(backend->stdio);
3726 break;
3727 #ifdef _WIN32
3728 case CHARDEV_BACKEND_KIND_CONSOLE:
3729 chr = qemu_chr_open_win_con();
3730 break;
3731 #endif
3732 #ifdef CONFIG_SPICE
3733 case CHARDEV_BACKEND_KIND_SPICEVMC:
3734 chr = qemu_chr_open_spice_vmc(backend->spicevmc->type);
3735 break;
3736 case CHARDEV_BACKEND_KIND_SPICEPORT:
3737 chr = qemu_chr_open_spice_port(backend->spiceport->fqdn);
3738 break;
3739 #endif
3740 case CHARDEV_BACKEND_KIND_VC:
3741 chr = vc_init(backend->vc);
3742 break;
3743 case CHARDEV_BACKEND_KIND_MEMORY:
3744 chr = qemu_chr_open_ringbuf(backend->memory, errp);
3745 break;
3746 default:
3747 error_setg(errp, "unknown chardev backend (%d)", backend->kind);
3748 break;
3749 }
3750
3751 if (chr == NULL && !error_is_set(errp)) {
3752 error_setg(errp, "Failed to create chardev");
3753 }
3754 if (chr) {
3755 chr->label = g_strdup(id);
3756 chr->avail_connections =
3757 (backend->kind == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1;
3758 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3759 return ret;
3760 } else {
3761 g_free(ret);
3762 return NULL;
3763 }
3764 }
3765
3766 void qmp_chardev_remove(const char *id, Error **errp)
3767 {
3768 CharDriverState *chr;
3769
3770 chr = qemu_chr_find(id);
3771 if (NULL == chr) {
3772 error_setg(errp, "Chardev '%s' not found", id);
3773 return;
3774 }
3775 if (chr->chr_can_read || chr->chr_read ||
3776 chr->chr_event || chr->handler_opaque) {
3777 error_setg(errp, "Chardev '%s' is busy", id);
3778 return;
3779 }
3780 qemu_chr_delete(chr);
3781 }
3782
3783 static void register_types(void)
3784 {
3785 register_char_driver_qapi("null", CHARDEV_BACKEND_KIND_NULL, NULL);
3786 register_char_driver("socket", qemu_chr_open_socket);
3787 register_char_driver("udp", qemu_chr_open_udp);
3788 register_char_driver_qapi("memory", CHARDEV_BACKEND_KIND_MEMORY,
3789 qemu_chr_parse_ringbuf);
3790 register_char_driver_qapi("file", CHARDEV_BACKEND_KIND_FILE,
3791 qemu_chr_parse_file_out);
3792 register_char_driver_qapi("stdio", CHARDEV_BACKEND_KIND_STDIO,
3793 qemu_chr_parse_stdio);
3794 register_char_driver_qapi("serial", CHARDEV_BACKEND_KIND_SERIAL,
3795 qemu_chr_parse_serial);
3796 register_char_driver_qapi("tty", CHARDEV_BACKEND_KIND_SERIAL,
3797 qemu_chr_parse_serial);
3798 register_char_driver_qapi("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
3799 qemu_chr_parse_parallel);
3800 register_char_driver_qapi("parport", CHARDEV_BACKEND_KIND_PARALLEL,
3801 qemu_chr_parse_parallel);
3802 register_char_driver_qapi("pty", CHARDEV_BACKEND_KIND_PTY, NULL);
3803 register_char_driver_qapi("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL);
3804 register_char_driver_qapi("pipe", CHARDEV_BACKEND_KIND_PIPE,
3805 qemu_chr_parse_pipe);
3806 }
3807
3808 type_init(register_types);
Qemu copy for testing