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qcow2: Remove bogus unlock of s->lock
[qemu/agraf.git] / qemu-char.c
blobdee623e59217cb6bab78e2f7d6964c249a79da08
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 *src;
598 int max_size;
599
600 IOCanReadHandler *fd_can_read;
601 void *opaque;
602
603 QTAILQ_ENTRY(IOWatchPoll) node;
604 } IOWatchPoll;
605
606 static QTAILQ_HEAD(, IOWatchPoll) io_watch_poll_list =
607 QTAILQ_HEAD_INITIALIZER(io_watch_poll_list);
608
609 static IOWatchPoll *io_watch_poll_from_source(GSource *source)
610 {
611 IOWatchPoll *i;
612
613 QTAILQ_FOREACH(i, &io_watch_poll_list, node) {
614 if (i->src == source) {
615 return i;
616 }
617 }
618
619 return NULL;
620 }
621
622 static gboolean io_watch_poll_prepare(GSource *source, gint *timeout_)
623 {
624 IOWatchPoll *iwp = io_watch_poll_from_source(source);
625
626 iwp->max_size = iwp->fd_can_read(iwp->opaque);
627 if (iwp->max_size == 0) {
628 return FALSE;
629 }
630
631 return g_io_watch_funcs.prepare(source, timeout_);
632 }
633
634 static gboolean io_watch_poll_check(GSource *source)
635 {
636 IOWatchPoll *iwp = io_watch_poll_from_source(source);
637
638 if (iwp->max_size == 0) {
639 return FALSE;
640 }
641
642 return g_io_watch_funcs.check(source);
643 }
644
645 static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
646 gpointer user_data)
647 {
648 return g_io_watch_funcs.dispatch(source, callback, user_data);
649 }
650
651 static void io_watch_poll_finalize(GSource *source)
652 {
653 IOWatchPoll *iwp = io_watch_poll_from_source(source);
654 QTAILQ_REMOVE(&io_watch_poll_list, iwp, node);
655 g_io_watch_funcs.finalize(source);
656 }
657
658 static GSourceFuncs io_watch_poll_funcs = {
659 .prepare = io_watch_poll_prepare,
660 .check = io_watch_poll_check,
661 .dispatch = io_watch_poll_dispatch,
662 .finalize = io_watch_poll_finalize,
663 };
664
665 /* Can only be used for read */
666 static guint io_add_watch_poll(GIOChannel *channel,
667 IOCanReadHandler *fd_can_read,
668 GIOFunc fd_read,
669 gpointer user_data)
670 {
671 IOWatchPoll *iwp;
672 GSource *src;
673 guint tag;
674
675 src = g_io_create_watch(channel, G_IO_IN | G_IO_ERR | G_IO_HUP);
676 g_source_set_funcs(src, &io_watch_poll_funcs);
677 g_source_set_callback(src, (GSourceFunc)fd_read, user_data, NULL);
678 tag = g_source_attach(src, NULL);
679 g_source_unref(src);
680
681 iwp = g_malloc0(sizeof(*iwp));
682 iwp->src = src;
683 iwp->max_size = 0;
684 iwp->fd_can_read = fd_can_read;
685 iwp->opaque = user_data;
686
687 QTAILQ_INSERT_HEAD(&io_watch_poll_list, iwp, node);
688
689 return tag;
690 }
691
692 #ifndef _WIN32
693 static GIOChannel *io_channel_from_fd(int fd)
694 {
695 GIOChannel *chan;
696
697 if (fd == -1) {
698 return NULL;
699 }
700
701 chan = g_io_channel_unix_new(fd);
702
703 g_io_channel_set_encoding(chan, NULL, NULL);
704 g_io_channel_set_buffered(chan, FALSE);
705
706 return chan;
707 }
708 #endif
709
710 static GIOChannel *io_channel_from_socket(int fd)
711 {
712 GIOChannel *chan;
713
714 if (fd == -1) {
715 return NULL;
716 }
717
718 #ifdef _WIN32
719 chan = g_io_channel_win32_new_socket(fd);
720 #else
721 chan = g_io_channel_unix_new(fd);
722 #endif
723
724 g_io_channel_set_encoding(chan, NULL, NULL);
725 g_io_channel_set_buffered(chan, FALSE);
726
727 return chan;
728 }
729
730 static int io_channel_send_all(GIOChannel *fd, const void *_buf, int len1)
731 {
732 GIOStatus status;
733 gsize bytes_written;
734 int len;
735 const uint8_t *buf = _buf;
736
737 len = len1;
738 while (len > 0) {
739 status = g_io_channel_write_chars(fd, (const gchar *)buf, len,
740 &bytes_written, NULL);
741 if (status != G_IO_STATUS_NORMAL) {
742 if (status == G_IO_STATUS_AGAIN) {
743 errno = EAGAIN;
744 return -1;
745 } else {
746 errno = EINVAL;
747 return -1;
748 }
749 } else if (status == G_IO_STATUS_EOF) {
750 break;
751 } else {
752 buf += bytes_written;
753 len -= bytes_written;
754 }
755 }
756 return len1 - len;
757 }
758
759 #ifndef _WIN32
760
761 typedef struct FDCharDriver {
762 CharDriverState *chr;
763 GIOChannel *fd_in, *fd_out;
764 guint fd_in_tag;
765 int max_size;
766 QTAILQ_ENTRY(FDCharDriver) node;
767 } FDCharDriver;
768
769 static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
770 {
771 FDCharDriver *s = chr->opaque;
772
773 return io_channel_send_all(s->fd_out, buf, len);
774 }
775
776 static gboolean fd_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
777 {
778 CharDriverState *chr = opaque;
779 FDCharDriver *s = chr->opaque;
780 int len;
781 uint8_t buf[READ_BUF_LEN];
782 GIOStatus status;
783 gsize bytes_read;
784
785 len = sizeof(buf);
786 if (len > s->max_size) {
787 len = s->max_size;
788 }
789 if (len == 0) {
790 return FALSE;
791 }
792
793 status = g_io_channel_read_chars(chan, (gchar *)buf,
794 len, &bytes_read, NULL);
795 if (status == G_IO_STATUS_EOF) {
796 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
797 return FALSE;
798 }
799 if (status == G_IO_STATUS_NORMAL) {
800 qemu_chr_be_write(chr, buf, bytes_read);
801 }
802
803 return TRUE;
804 }
805
806 static int fd_chr_read_poll(void *opaque)
807 {
808 CharDriverState *chr = opaque;
809 FDCharDriver *s = chr->opaque;
810
811 s->max_size = qemu_chr_be_can_write(chr);
812 return s->max_size;
813 }
814
815 static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
816 {
817 FDCharDriver *s = chr->opaque;
818 return g_io_create_watch(s->fd_out, cond);
819 }
820
821 static void fd_chr_update_read_handler(CharDriverState *chr)
822 {
823 FDCharDriver *s = chr->opaque;
824
825 if (s->fd_in_tag) {
826 g_source_remove(s->fd_in_tag);
827 }
828
829 if (s->fd_in) {
830 s->fd_in_tag = io_add_watch_poll(s->fd_in, fd_chr_read_poll, fd_chr_read, chr);
831 }
832 }
833
834 static void fd_chr_close(struct CharDriverState *chr)
835 {
836 FDCharDriver *s = chr->opaque;
837
838 if (s->fd_in_tag) {
839 g_source_remove(s->fd_in_tag);
840 s->fd_in_tag = 0;
841 }
842
843 if (s->fd_in) {
844 g_io_channel_unref(s->fd_in);
845 }
846 if (s->fd_out) {
847 g_io_channel_unref(s->fd_out);
848 }
849
850 g_free(s);
851 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
852 }
853
854 /* open a character device to a unix fd */
855 static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
856 {
857 CharDriverState *chr;
858 FDCharDriver *s;
859
860 chr = g_malloc0(sizeof(CharDriverState));
861 s = g_malloc0(sizeof(FDCharDriver));
862 s->fd_in = io_channel_from_fd(fd_in);
863 s->fd_out = io_channel_from_fd(fd_out);
864 fcntl(fd_out, F_SETFL, O_NONBLOCK);
865 s->chr = chr;
866 chr->opaque = s;
867 chr->chr_add_watch = fd_chr_add_watch;
868 chr->chr_write = fd_chr_write;
869 chr->chr_update_read_handler = fd_chr_update_read_handler;
870 chr->chr_close = fd_chr_close;
871
872 qemu_chr_be_generic_open(chr);
873
874 return chr;
875 }
876
877 static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
878 {
879 int fd_in, fd_out;
880 char filename_in[256], filename_out[256];
881 const char *filename = opts->device;
882
883 if (filename == NULL) {
884 fprintf(stderr, "chardev: pipe: no filename given\n");
885 return NULL;
886 }
887
888 snprintf(filename_in, 256, "%s.in", filename);
889 snprintf(filename_out, 256, "%s.out", filename);
890 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
891 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
892 if (fd_in < 0 || fd_out < 0) {
893 if (fd_in >= 0)
894 close(fd_in);
895 if (fd_out >= 0)
896 close(fd_out);
897 TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
898 if (fd_in < 0) {
899 return NULL;
900 }
901 }
902 return qemu_chr_open_fd(fd_in, fd_out);
903 }
904
905 /* init terminal so that we can grab keys */
906 static struct termios oldtty;
907 static int old_fd0_flags;
908 static bool stdio_allow_signal;
909
910 static void term_exit(void)
911 {
912 tcsetattr (0, TCSANOW, &oldtty);
913 fcntl(0, F_SETFL, old_fd0_flags);
914 }
915
916 static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
917 {
918 struct termios tty;
919
920 tty = oldtty;
921 if (!echo) {
922 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
923 |INLCR|IGNCR|ICRNL|IXON);
924 tty.c_oflag |= OPOST;
925 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
926 tty.c_cflag &= ~(CSIZE|PARENB);
927 tty.c_cflag |= CS8;
928 tty.c_cc[VMIN] = 1;
929 tty.c_cc[VTIME] = 0;
930 }
931 /* if graphical mode, we allow Ctrl-C handling */
932 if (!stdio_allow_signal)
933 tty.c_lflag &= ~ISIG;
934
935 tcsetattr (0, TCSANOW, &tty);
936 }
937
938 static void qemu_chr_close_stdio(struct CharDriverState *chr)
939 {
940 term_exit();
941 fd_chr_close(chr);
942 }
943
944 static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
945 {
946 CharDriverState *chr;
947
948 if (is_daemonized()) {
949 error_report("cannot use stdio with -daemonize");
950 return NULL;
951 }
952 old_fd0_flags = fcntl(0, F_GETFL);
953 tcgetattr (0, &oldtty);
954 fcntl(0, F_SETFL, O_NONBLOCK);
955 atexit(term_exit);
956
957 chr = qemu_chr_open_fd(0, 1);
958 chr->chr_close = qemu_chr_close_stdio;
959 chr->chr_set_echo = qemu_chr_set_echo_stdio;
960 stdio_allow_signal = display_type != DT_NOGRAPHIC;
961 if (opts->has_signal) {
962 stdio_allow_signal = opts->signal;
963 }
964 qemu_chr_fe_set_echo(chr, false);
965
966 return chr;
967 }
968
969 #ifdef __sun__
970 /* Once Solaris has openpty(), this is going to be removed. */
971 static int openpty(int *amaster, int *aslave, char *name,
972 struct termios *termp, struct winsize *winp)
973 {
974 const char *slave;
975 int mfd = -1, sfd = -1;
976
977 *amaster = *aslave = -1;
978
979 mfd = open("/dev/ptmx", O_RDWR | O_NOCTTY);
980 if (mfd < 0)
981 goto err;
982
983 if (grantpt(mfd) == -1 || unlockpt(mfd) == -1)
984 goto err;
985
986 if ((slave = ptsname(mfd)) == NULL)
987 goto err;
988
989 if ((sfd = open(slave, O_RDONLY | O_NOCTTY)) == -1)
990 goto err;
991
992 if (ioctl(sfd, I_PUSH, "ptem") == -1 ||
993 (termp != NULL && tcgetattr(sfd, termp) < 0))
994 goto err;
995
996 if (amaster)
997 *amaster = mfd;
998 if (aslave)
999 *aslave = sfd;
1000 if (winp)
1001 ioctl(sfd, TIOCSWINSZ, winp);
1002
1003 return 0;
1004
1005 err:
1006 if (sfd != -1)
1007 close(sfd);
1008 close(mfd);
1009 return -1;
1010 }
1011
1012 static void cfmakeraw (struct termios *termios_p)
1013 {
1014 termios_p->c_iflag &=
1015 ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
1016 termios_p->c_oflag &= ~OPOST;
1017 termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
1018 termios_p->c_cflag &= ~(CSIZE|PARENB);
1019 termios_p->c_cflag |= CS8;
1020
1021 termios_p->c_cc[VMIN] = 0;
1022 termios_p->c_cc[VTIME] = 0;
1023 }
1024 #endif
1025
1026 #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
1027 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
1028 || defined(__GLIBC__)
1029
1030 #define HAVE_CHARDEV_TTY 1
1031
1032 typedef struct {
1033 GIOChannel *fd;
1034 guint fd_tag;
1035 int connected;
1036 int polling;
1037 int read_bytes;
1038 guint timer_tag;
1039 } PtyCharDriver;
1040
1041 static void pty_chr_update_read_handler(CharDriverState *chr);
1042 static void pty_chr_state(CharDriverState *chr, int connected);
1043
1044 static gboolean pty_chr_timer(gpointer opaque)
1045 {
1046 struct CharDriverState *chr = opaque;
1047 PtyCharDriver *s = chr->opaque;
1048
1049 if (s->connected) {
1050 goto out;
1051 }
1052 if (s->polling) {
1053 /* If we arrive here without polling being cleared due
1054 * read returning -EIO, then we are (re-)connected */
1055 pty_chr_state(chr, 1);
1056 goto out;
1057 }
1058
1059 /* Next poll ... */
1060 pty_chr_update_read_handler(chr);
1061
1062 out:
1063 return FALSE;
1064 }
1065
1066 static void pty_chr_rearm_timer(CharDriverState *chr, int ms)
1067 {
1068 PtyCharDriver *s = chr->opaque;
1069
1070 if (s->timer_tag) {
1071 g_source_remove(s->timer_tag);
1072 s->timer_tag = 0;
1073 }
1074
1075 if (ms == 1000) {
1076 s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
1077 } else {
1078 s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr);
1079 }
1080 }
1081
1082 static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1083 {
1084 PtyCharDriver *s = chr->opaque;
1085
1086 if (!s->connected) {
1087 /* guest sends data, check for (re-)connect */
1088 pty_chr_update_read_handler(chr);
1089 return 0;
1090 }
1091 return io_channel_send_all(s->fd, buf, len);
1092 }
1093
1094 static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1095 {
1096 PtyCharDriver *s = chr->opaque;
1097 return g_io_create_watch(s->fd, cond);
1098 }
1099
1100 static int pty_chr_read_poll(void *opaque)
1101 {
1102 CharDriverState *chr = opaque;
1103 PtyCharDriver *s = chr->opaque;
1104
1105 s->read_bytes = qemu_chr_be_can_write(chr);
1106 return s->read_bytes;
1107 }
1108
1109 static gboolean pty_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
1110 {
1111 CharDriverState *chr = opaque;
1112 PtyCharDriver *s = chr->opaque;
1113 gsize size, len;
1114 uint8_t buf[READ_BUF_LEN];
1115 GIOStatus status;
1116
1117 len = sizeof(buf);
1118 if (len > s->read_bytes)
1119 len = s->read_bytes;
1120 if (len == 0)
1121 return FALSE;
1122 status = g_io_channel_read_chars(s->fd, (gchar *)buf, len, &size, NULL);
1123 if (status != G_IO_STATUS_NORMAL) {
1124 pty_chr_state(chr, 0);
1125 return FALSE;
1126 } else {
1127 pty_chr_state(chr, 1);
1128 qemu_chr_be_write(chr, buf, size);
1129 }
1130 return TRUE;
1131 }
1132
1133 static void pty_chr_update_read_handler(CharDriverState *chr)
1134 {
1135 PtyCharDriver *s = chr->opaque;
1136
1137 if (s->fd_tag) {
1138 g_source_remove(s->fd_tag);
1139 }
1140
1141 s->fd_tag = io_add_watch_poll(s->fd, pty_chr_read_poll, pty_chr_read, chr);
1142 s->polling = 1;
1143 /*
1144 * Short timeout here: just need wait long enougth that qemu makes
1145 * it through the poll loop once. When reconnected we want a
1146 * short timeout so we notice it almost instantly. Otherwise
1147 * read() gives us -EIO instantly, making pty_chr_state() reset the
1148 * timeout to the normal (much longer) poll interval before the
1149 * timer triggers.
1150 */
1151 pty_chr_rearm_timer(chr, 10);
1152 }
1153
1154 static void pty_chr_state(CharDriverState *chr, int connected)
1155 {
1156 PtyCharDriver *s = chr->opaque;
1157
1158 if (!connected) {
1159 g_source_remove(s->fd_tag);
1160 s->fd_tag = 0;
1161 s->connected = 0;
1162 s->polling = 0;
1163 /* (re-)connect poll interval for idle guests: once per second.
1164 * We check more frequently in case the guests sends data to
1165 * the virtual device linked to our pty. */
1166 pty_chr_rearm_timer(chr, 1000);
1167 } else {
1168 if (!s->connected)
1169 qemu_chr_be_generic_open(chr);
1170 s->connected = 1;
1171 }
1172 }
1173
1174
1175 static void pty_chr_close(struct CharDriverState *chr)
1176 {
1177 PtyCharDriver *s = chr->opaque;
1178 int fd;
1179
1180 if (s->fd_tag) {
1181 g_source_remove(s->fd_tag);
1182 }
1183 fd = g_io_channel_unix_get_fd(s->fd);
1184 g_io_channel_unref(s->fd);
1185 close(fd);
1186 if (s->timer_tag) {
1187 g_source_remove(s->timer_tag);
1188 }
1189 g_free(s);
1190 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1191 }
1192
1193 static CharDriverState *qemu_chr_open_pty(const char *id,
1194 ChardevReturn *ret)
1195 {
1196 CharDriverState *chr;
1197 PtyCharDriver *s;
1198 struct termios tty;
1199 int master_fd, slave_fd;
1200 #if defined(__OpenBSD__) || defined(__DragonFly__)
1201 char pty_name[PATH_MAX];
1202 #define q_ptsname(x) pty_name
1203 #else
1204 char *pty_name = NULL;
1205 #define q_ptsname(x) ptsname(x)
1206 #endif
1207
1208 if (openpty(&master_fd, &slave_fd, pty_name, NULL, NULL) < 0) {
1209 return NULL;
1210 }
1211
1212 /* Set raw attributes on the pty. */
1213 tcgetattr(slave_fd, &tty);
1214 cfmakeraw(&tty);
1215 tcsetattr(slave_fd, TCSAFLUSH, &tty);
1216 close(slave_fd);
1217
1218 chr = g_malloc0(sizeof(CharDriverState));
1219
1220 chr->filename = g_strdup_printf("pty:%s", q_ptsname(master_fd));
1221 ret->pty = g_strdup(q_ptsname(master_fd));
1222 ret->has_pty = true;
1223
1224 fprintf(stderr, "char device redirected to %s (label %s)\n",
1225 q_ptsname(master_fd), id);
1226
1227 s = g_malloc0(sizeof(PtyCharDriver));
1228 chr->opaque = s;
1229 chr->chr_write = pty_chr_write;
1230 chr->chr_update_read_handler = pty_chr_update_read_handler;
1231 chr->chr_close = pty_chr_close;
1232 chr->chr_add_watch = pty_chr_add_watch;
1233
1234 s->fd = io_channel_from_fd(master_fd);
1235 s->timer_tag = 0;
1236
1237 return chr;
1238 }
1239
1240 static void tty_serial_init(int fd, int speed,
1241 int parity, int data_bits, int stop_bits)
1242 {
1243 struct termios tty;
1244 speed_t spd;
1245
1246 #if 0
1247 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1248 speed, parity, data_bits, stop_bits);
1249 #endif
1250 tcgetattr (fd, &tty);
1251
1252 #define check_speed(val) if (speed <= val) { spd = B##val; break; }
1253 speed = speed * 10 / 11;
1254 do {
1255 check_speed(50);
1256 check_speed(75);
1257 check_speed(110);
1258 check_speed(134);
1259 check_speed(150);
1260 check_speed(200);
1261 check_speed(300);
1262 check_speed(600);
1263 check_speed(1200);
1264 check_speed(1800);
1265 check_speed(2400);
1266 check_speed(4800);
1267 check_speed(9600);
1268 check_speed(19200);
1269 check_speed(38400);
1270 /* Non-Posix values follow. They may be unsupported on some systems. */
1271 check_speed(57600);
1272 check_speed(115200);
1273 #ifdef B230400
1274 check_speed(230400);
1275 #endif
1276 #ifdef B460800
1277 check_speed(460800);
1278 #endif
1279 #ifdef B500000
1280 check_speed(500000);
1281 #endif
1282 #ifdef B576000
1283 check_speed(576000);
1284 #endif
1285 #ifdef B921600
1286 check_speed(921600);
1287 #endif
1288 #ifdef B1000000
1289 check_speed(1000000);
1290 #endif
1291 #ifdef B1152000
1292 check_speed(1152000);
1293 #endif
1294 #ifdef B1500000
1295 check_speed(1500000);
1296 #endif
1297 #ifdef B2000000
1298 check_speed(2000000);
1299 #endif
1300 #ifdef B2500000
1301 check_speed(2500000);
1302 #endif
1303 #ifdef B3000000
1304 check_speed(3000000);
1305 #endif
1306 #ifdef B3500000
1307 check_speed(3500000);
1308 #endif
1309 #ifdef B4000000
1310 check_speed(4000000);
1311 #endif
1312 spd = B115200;
1313 } while (0);
1314
1315 cfsetispeed(&tty, spd);
1316 cfsetospeed(&tty, spd);
1317
1318 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1319 |INLCR|IGNCR|ICRNL|IXON);
1320 tty.c_oflag |= OPOST;
1321 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1322 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1323 switch(data_bits) {
1324 default:
1325 case 8:
1326 tty.c_cflag |= CS8;
1327 break;
1328 case 7:
1329 tty.c_cflag |= CS7;
1330 break;
1331 case 6:
1332 tty.c_cflag |= CS6;
1333 break;
1334 case 5:
1335 tty.c_cflag |= CS5;
1336 break;
1337 }
1338 switch(parity) {
1339 default:
1340 case 'N':
1341 break;
1342 case 'E':
1343 tty.c_cflag |= PARENB;
1344 break;
1345 case 'O':
1346 tty.c_cflag |= PARENB | PARODD;
1347 break;
1348 }
1349 if (stop_bits == 2)
1350 tty.c_cflag |= CSTOPB;
1351
1352 tcsetattr (fd, TCSANOW, &tty);
1353 }
1354
1355 static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1356 {
1357 FDCharDriver *s = chr->opaque;
1358
1359 switch(cmd) {
1360 case CHR_IOCTL_SERIAL_SET_PARAMS:
1361 {
1362 QEMUSerialSetParams *ssp = arg;
1363 tty_serial_init(g_io_channel_unix_get_fd(s->fd_in),
1364 ssp->speed, ssp->parity,
1365 ssp->data_bits, ssp->stop_bits);
1366 }
1367 break;
1368 case CHR_IOCTL_SERIAL_SET_BREAK:
1369 {
1370 int enable = *(int *)arg;
1371 if (enable) {
1372 tcsendbreak(g_io_channel_unix_get_fd(s->fd_in), 1);
1373 }
1374 }
1375 break;
1376 case CHR_IOCTL_SERIAL_GET_TIOCM:
1377 {
1378 int sarg = 0;
1379 int *targ = (int *)arg;
1380 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &sarg);
1381 *targ = 0;
1382 if (sarg & TIOCM_CTS)
1383 *targ |= CHR_TIOCM_CTS;
1384 if (sarg & TIOCM_CAR)
1385 *targ |= CHR_TIOCM_CAR;
1386 if (sarg & TIOCM_DSR)
1387 *targ |= CHR_TIOCM_DSR;
1388 if (sarg & TIOCM_RI)
1389 *targ |= CHR_TIOCM_RI;
1390 if (sarg & TIOCM_DTR)
1391 *targ |= CHR_TIOCM_DTR;
1392 if (sarg & TIOCM_RTS)
1393 *targ |= CHR_TIOCM_RTS;
1394 }
1395 break;
1396 case CHR_IOCTL_SERIAL_SET_TIOCM:
1397 {
1398 int sarg = *(int *)arg;
1399 int targ = 0;
1400 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &targ);
1401 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1402 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1403 if (sarg & CHR_TIOCM_CTS)
1404 targ |= TIOCM_CTS;
1405 if (sarg & CHR_TIOCM_CAR)
1406 targ |= TIOCM_CAR;
1407 if (sarg & CHR_TIOCM_DSR)
1408 targ |= TIOCM_DSR;
1409 if (sarg & CHR_TIOCM_RI)
1410 targ |= TIOCM_RI;
1411 if (sarg & CHR_TIOCM_DTR)
1412 targ |= TIOCM_DTR;
1413 if (sarg & CHR_TIOCM_RTS)
1414 targ |= TIOCM_RTS;
1415 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMSET, &targ);
1416 }
1417 break;
1418 default:
1419 return -ENOTSUP;
1420 }
1421 return 0;
1422 }
1423
1424 static void qemu_chr_close_tty(CharDriverState *chr)
1425 {
1426 FDCharDriver *s = chr->opaque;
1427 int fd = -1;
1428
1429 if (s) {
1430 fd = g_io_channel_unix_get_fd(s->fd_in);
1431 }
1432
1433 fd_chr_close(chr);
1434
1435 if (fd >= 0) {
1436 close(fd);
1437 }
1438 }
1439
1440 static CharDriverState *qemu_chr_open_tty_fd(int fd)
1441 {
1442 CharDriverState *chr;
1443
1444 tty_serial_init(fd, 115200, 'N', 8, 1);
1445 chr = qemu_chr_open_fd(fd, fd);
1446 chr->chr_ioctl = tty_serial_ioctl;
1447 chr->chr_close = qemu_chr_close_tty;
1448 return chr;
1449 }
1450 #endif /* __linux__ || __sun__ */
1451
1452 #if defined(__linux__)
1453
1454 #define HAVE_CHARDEV_PARPORT 1
1455
1456 typedef struct {
1457 int fd;
1458 int mode;
1459 } ParallelCharDriver;
1460
1461 static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1462 {
1463 if (s->mode != mode) {
1464 int m = mode;
1465 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1466 return 0;
1467 s->mode = mode;
1468 }
1469 return 1;
1470 }
1471
1472 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1473 {
1474 ParallelCharDriver *drv = chr->opaque;
1475 int fd = drv->fd;
1476 uint8_t b;
1477
1478 switch(cmd) {
1479 case CHR_IOCTL_PP_READ_DATA:
1480 if (ioctl(fd, PPRDATA, &b) < 0)
1481 return -ENOTSUP;
1482 *(uint8_t *)arg = b;
1483 break;
1484 case CHR_IOCTL_PP_WRITE_DATA:
1485 b = *(uint8_t *)arg;
1486 if (ioctl(fd, PPWDATA, &b) < 0)
1487 return -ENOTSUP;
1488 break;
1489 case CHR_IOCTL_PP_READ_CONTROL:
1490 if (ioctl(fd, PPRCONTROL, &b) < 0)
1491 return -ENOTSUP;
1492 /* Linux gives only the lowest bits, and no way to know data
1493 direction! For better compatibility set the fixed upper
1494 bits. */
1495 *(uint8_t *)arg = b | 0xc0;
1496 break;
1497 case CHR_IOCTL_PP_WRITE_CONTROL:
1498 b = *(uint8_t *)arg;
1499 if (ioctl(fd, PPWCONTROL, &b) < 0)
1500 return -ENOTSUP;
1501 break;
1502 case CHR_IOCTL_PP_READ_STATUS:
1503 if (ioctl(fd, PPRSTATUS, &b) < 0)
1504 return -ENOTSUP;
1505 *(uint8_t *)arg = b;
1506 break;
1507 case CHR_IOCTL_PP_DATA_DIR:
1508 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1509 return -ENOTSUP;
1510 break;
1511 case CHR_IOCTL_PP_EPP_READ_ADDR:
1512 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1513 struct ParallelIOArg *parg = arg;
1514 int n = read(fd, parg->buffer, parg->count);
1515 if (n != parg->count) {
1516 return -EIO;
1517 }
1518 }
1519 break;
1520 case CHR_IOCTL_PP_EPP_READ:
1521 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1522 struct ParallelIOArg *parg = arg;
1523 int n = read(fd, parg->buffer, parg->count);
1524 if (n != parg->count) {
1525 return -EIO;
1526 }
1527 }
1528 break;
1529 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1530 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1531 struct ParallelIOArg *parg = arg;
1532 int n = write(fd, parg->buffer, parg->count);
1533 if (n != parg->count) {
1534 return -EIO;
1535 }
1536 }
1537 break;
1538 case CHR_IOCTL_PP_EPP_WRITE:
1539 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1540 struct ParallelIOArg *parg = arg;
1541 int n = write(fd, parg->buffer, parg->count);
1542 if (n != parg->count) {
1543 return -EIO;
1544 }
1545 }
1546 break;
1547 default:
1548 return -ENOTSUP;
1549 }
1550 return 0;
1551 }
1552
1553 static void pp_close(CharDriverState *chr)
1554 {
1555 ParallelCharDriver *drv = chr->opaque;
1556 int fd = drv->fd;
1557
1558 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1559 ioctl(fd, PPRELEASE);
1560 close(fd);
1561 g_free(drv);
1562 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1563 }
1564
1565 static CharDriverState *qemu_chr_open_pp_fd(int fd)
1566 {
1567 CharDriverState *chr;
1568 ParallelCharDriver *drv;
1569
1570 if (ioctl(fd, PPCLAIM) < 0) {
1571 close(fd);
1572 return NULL;
1573 }
1574
1575 drv = g_malloc0(sizeof(ParallelCharDriver));
1576 drv->fd = fd;
1577 drv->mode = IEEE1284_MODE_COMPAT;
1578
1579 chr = g_malloc0(sizeof(CharDriverState));
1580 chr->chr_write = null_chr_write;
1581 chr->chr_ioctl = pp_ioctl;
1582 chr->chr_close = pp_close;
1583 chr->opaque = drv;
1584
1585 qemu_chr_be_generic_open(chr);
1586
1587 return chr;
1588 }
1589 #endif /* __linux__ */
1590
1591 #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
1592
1593 #define HAVE_CHARDEV_PARPORT 1
1594
1595 static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1596 {
1597 int fd = (int)(intptr_t)chr->opaque;
1598 uint8_t b;
1599
1600 switch(cmd) {
1601 case CHR_IOCTL_PP_READ_DATA:
1602 if (ioctl(fd, PPIGDATA, &b) < 0)
1603 return -ENOTSUP;
1604 *(uint8_t *)arg = b;
1605 break;
1606 case CHR_IOCTL_PP_WRITE_DATA:
1607 b = *(uint8_t *)arg;
1608 if (ioctl(fd, PPISDATA, &b) < 0)
1609 return -ENOTSUP;
1610 break;
1611 case CHR_IOCTL_PP_READ_CONTROL:
1612 if (ioctl(fd, PPIGCTRL, &b) < 0)
1613 return -ENOTSUP;
1614 *(uint8_t *)arg = b;
1615 break;
1616 case CHR_IOCTL_PP_WRITE_CONTROL:
1617 b = *(uint8_t *)arg;
1618 if (ioctl(fd, PPISCTRL, &b) < 0)
1619 return -ENOTSUP;
1620 break;
1621 case CHR_IOCTL_PP_READ_STATUS:
1622 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1623 return -ENOTSUP;
1624 *(uint8_t *)arg = b;
1625 break;
1626 default:
1627 return -ENOTSUP;
1628 }
1629 return 0;
1630 }
1631
1632 static CharDriverState *qemu_chr_open_pp_fd(int fd)
1633 {
1634 CharDriverState *chr;
1635
1636 chr = g_malloc0(sizeof(CharDriverState));
1637 chr->opaque = (void *)(intptr_t)fd;
1638 chr->chr_write = null_chr_write;
1639 chr->chr_ioctl = pp_ioctl;
1640 return chr;
1641 }
1642 #endif
1643
1644 #else /* _WIN32 */
1645
1646 typedef struct {
1647 int max_size;
1648 HANDLE hcom, hrecv, hsend;
1649 OVERLAPPED orecv, osend;
1650 BOOL fpipe;
1651 DWORD len;
1652 } WinCharState;
1653
1654 typedef struct {
1655 HANDLE hStdIn;
1656 HANDLE hInputReadyEvent;
1657 HANDLE hInputDoneEvent;
1658 HANDLE hInputThread;
1659 uint8_t win_stdio_buf;
1660 } WinStdioCharState;
1661
1662 #define NSENDBUF 2048
1663 #define NRECVBUF 2048
1664 #define MAXCONNECT 1
1665 #define NTIMEOUT 5000
1666
1667 static int win_chr_poll(void *opaque);
1668 static int win_chr_pipe_poll(void *opaque);
1669
1670 static void win_chr_close(CharDriverState *chr)
1671 {
1672 WinCharState *s = chr->opaque;
1673
1674 if (s->hsend) {
1675 CloseHandle(s->hsend);
1676 s->hsend = NULL;
1677 }
1678 if (s->hrecv) {
1679 CloseHandle(s->hrecv);
1680 s->hrecv = NULL;
1681 }
1682 if (s->hcom) {
1683 CloseHandle(s->hcom);
1684 s->hcom = NULL;
1685 }
1686 if (s->fpipe)
1687 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1688 else
1689 qemu_del_polling_cb(win_chr_poll, chr);
1690
1691 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1692 }
1693
1694 static int win_chr_init(CharDriverState *chr, const char *filename)
1695 {
1696 WinCharState *s = chr->opaque;
1697 COMMCONFIG comcfg;
1698 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1699 COMSTAT comstat;
1700 DWORD size;
1701 DWORD err;
1702
1703 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1704 if (!s->hsend) {
1705 fprintf(stderr, "Failed CreateEvent\n");
1706 goto fail;
1707 }
1708 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1709 if (!s->hrecv) {
1710 fprintf(stderr, "Failed CreateEvent\n");
1711 goto fail;
1712 }
1713
1714 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1715 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1716 if (s->hcom == INVALID_HANDLE_VALUE) {
1717 fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
1718 s->hcom = NULL;
1719 goto fail;
1720 }
1721
1722 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
1723 fprintf(stderr, "Failed SetupComm\n");
1724 goto fail;
1725 }
1726
1727 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1728 size = sizeof(COMMCONFIG);
1729 GetDefaultCommConfig(filename, &comcfg, &size);
1730 comcfg.dcb.DCBlength = sizeof(DCB);
1731 CommConfigDialog(filename, NULL, &comcfg);
1732
1733 if (!SetCommState(s->hcom, &comcfg.dcb)) {
1734 fprintf(stderr, "Failed SetCommState\n");
1735 goto fail;
1736 }
1737
1738 if (!SetCommMask(s->hcom, EV_ERR)) {
1739 fprintf(stderr, "Failed SetCommMask\n");
1740 goto fail;
1741 }
1742
1743 cto.ReadIntervalTimeout = MAXDWORD;
1744 if (!SetCommTimeouts(s->hcom, &cto)) {
1745 fprintf(stderr, "Failed SetCommTimeouts\n");
1746 goto fail;
1747 }
1748
1749 if (!ClearCommError(s->hcom, &err, &comstat)) {
1750 fprintf(stderr, "Failed ClearCommError\n");
1751 goto fail;
1752 }
1753 qemu_add_polling_cb(win_chr_poll, chr);
1754 return 0;
1755
1756 fail:
1757 win_chr_close(chr);
1758 return -1;
1759 }
1760
1761 static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1762 {
1763 WinCharState *s = chr->opaque;
1764 DWORD len, ret, size, err;
1765
1766 len = len1;
1767 ZeroMemory(&s->osend, sizeof(s->osend));
1768 s->osend.hEvent = s->hsend;
1769 while (len > 0) {
1770 if (s->hsend)
1771 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1772 else
1773 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1774 if (!ret) {
1775 err = GetLastError();
1776 if (err == ERROR_IO_PENDING) {
1777 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1778 if (ret) {
1779 buf += size;
1780 len -= size;
1781 } else {
1782 break;
1783 }
1784 } else {
1785 break;
1786 }
1787 } else {
1788 buf += size;
1789 len -= size;
1790 }
1791 }
1792 return len1 - len;
1793 }
1794
1795 static int win_chr_read_poll(CharDriverState *chr)
1796 {
1797 WinCharState *s = chr->opaque;
1798
1799 s->max_size = qemu_chr_be_can_write(chr);
1800 return s->max_size;
1801 }
1802
1803 static void win_chr_readfile(CharDriverState *chr)
1804 {
1805 WinCharState *s = chr->opaque;
1806 int ret, err;
1807 uint8_t buf[READ_BUF_LEN];
1808 DWORD size;
1809
1810 ZeroMemory(&s->orecv, sizeof(s->orecv));
1811 s->orecv.hEvent = s->hrecv;
1812 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
1813 if (!ret) {
1814 err = GetLastError();
1815 if (err == ERROR_IO_PENDING) {
1816 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
1817 }
1818 }
1819
1820 if (size > 0) {
1821 qemu_chr_be_write(chr, buf, size);
1822 }
1823 }
1824
1825 static void win_chr_read(CharDriverState *chr)
1826 {
1827 WinCharState *s = chr->opaque;
1828
1829 if (s->len > s->max_size)
1830 s->len = s->max_size;
1831 if (s->len == 0)
1832 return;
1833
1834 win_chr_readfile(chr);
1835 }
1836
1837 static int win_chr_poll(void *opaque)
1838 {
1839 CharDriverState *chr = opaque;
1840 WinCharState *s = chr->opaque;
1841 COMSTAT status;
1842 DWORD comerr;
1843
1844 ClearCommError(s->hcom, &comerr, &status);
1845 if (status.cbInQue > 0) {
1846 s->len = status.cbInQue;
1847 win_chr_read_poll(chr);
1848 win_chr_read(chr);
1849 return 1;
1850 }
1851 return 0;
1852 }
1853
1854 static CharDriverState *qemu_chr_open_win_path(const char *filename)
1855 {
1856 CharDriverState *chr;
1857 WinCharState *s;
1858
1859 chr = g_malloc0(sizeof(CharDriverState));
1860 s = g_malloc0(sizeof(WinCharState));
1861 chr->opaque = s;
1862 chr->chr_write = win_chr_write;
1863 chr->chr_close = win_chr_close;
1864
1865 if (win_chr_init(chr, filename) < 0) {
1866 g_free(s);
1867 g_free(chr);
1868 return NULL;
1869 }
1870 qemu_chr_be_generic_open(chr);
1871 return chr;
1872 }
1873
1874 static int win_chr_pipe_poll(void *opaque)
1875 {
1876 CharDriverState *chr = opaque;
1877 WinCharState *s = chr->opaque;
1878 DWORD size;
1879
1880 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
1881 if (size > 0) {
1882 s->len = size;
1883 win_chr_read_poll(chr);
1884 win_chr_read(chr);
1885 return 1;
1886 }
1887 return 0;
1888 }
1889
1890 static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
1891 {
1892 WinCharState *s = chr->opaque;
1893 OVERLAPPED ov;
1894 int ret;
1895 DWORD size;
1896 char openname[256];
1897
1898 s->fpipe = TRUE;
1899
1900 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1901 if (!s->hsend) {
1902 fprintf(stderr, "Failed CreateEvent\n");
1903 goto fail;
1904 }
1905 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1906 if (!s->hrecv) {
1907 fprintf(stderr, "Failed CreateEvent\n");
1908 goto fail;
1909 }
1910
1911 snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
1912 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
1913 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
1914 PIPE_WAIT,
1915 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
1916 if (s->hcom == INVALID_HANDLE_VALUE) {
1917 fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
1918 s->hcom = NULL;
1919 goto fail;
1920 }
1921
1922 ZeroMemory(&ov, sizeof(ov));
1923 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
1924 ret = ConnectNamedPipe(s->hcom, &ov);
1925 if (ret) {
1926 fprintf(stderr, "Failed ConnectNamedPipe\n");
1927 goto fail;
1928 }
1929
1930 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
1931 if (!ret) {
1932 fprintf(stderr, "Failed GetOverlappedResult\n");
1933 if (ov.hEvent) {
1934 CloseHandle(ov.hEvent);
1935 ov.hEvent = NULL;
1936 }
1937 goto fail;
1938 }
1939
1940 if (ov.hEvent) {
1941 CloseHandle(ov.hEvent);
1942 ov.hEvent = NULL;
1943 }
1944 qemu_add_polling_cb(win_chr_pipe_poll, chr);
1945 return 0;
1946
1947 fail:
1948 win_chr_close(chr);
1949 return -1;
1950 }
1951
1952
1953 static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
1954 {
1955 const char *filename = opts->device;
1956 CharDriverState *chr;
1957 WinCharState *s;
1958
1959 chr = g_malloc0(sizeof(CharDriverState));
1960 s = g_malloc0(sizeof(WinCharState));
1961 chr->opaque = s;
1962 chr->chr_write = win_chr_write;
1963 chr->chr_close = win_chr_close;
1964
1965 if (win_chr_pipe_init(chr, filename) < 0) {
1966 g_free(s);
1967 g_free(chr);
1968 return NULL;
1969 }
1970 qemu_chr_be_generic_open(chr);
1971 return chr;
1972 }
1973
1974 static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
1975 {
1976 CharDriverState *chr;
1977 WinCharState *s;
1978
1979 chr = g_malloc0(sizeof(CharDriverState));
1980 s = g_malloc0(sizeof(WinCharState));
1981 s->hcom = fd_out;
1982 chr->opaque = s;
1983 chr->chr_write = win_chr_write;
1984 qemu_chr_be_generic_open(chr);
1985 return chr;
1986 }
1987
1988 static CharDriverState *qemu_chr_open_win_con(void)
1989 {
1990 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
1991 }
1992
1993 static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
1994 {
1995 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
1996 DWORD dwSize;
1997 int len1;
1998
1999 len1 = len;
2000
2001 while (len1 > 0) {
2002 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
2003 break;
2004 }
2005 buf += dwSize;
2006 len1 -= dwSize;
2007 }
2008
2009 return len - len1;
2010 }
2011
2012 static void win_stdio_wait_func(void *opaque)
2013 {
2014 CharDriverState *chr = opaque;
2015 WinStdioCharState *stdio = chr->opaque;
2016 INPUT_RECORD buf[4];
2017 int ret;
2018 DWORD dwSize;
2019 int i;
2020
2021 ret = ReadConsoleInput(stdio->hStdIn, buf, sizeof(buf) / sizeof(*buf),
2022 &dwSize);
2023
2024 if (!ret) {
2025 /* Avoid error storm */
2026 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
2027 return;
2028 }
2029
2030 for (i = 0; i < dwSize; i++) {
2031 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
2032
2033 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
2034 int j;
2035 if (kev->uChar.AsciiChar != 0) {
2036 for (j = 0; j < kev->wRepeatCount; j++) {
2037 if (qemu_chr_be_can_write(chr)) {
2038 uint8_t c = kev->uChar.AsciiChar;
2039 qemu_chr_be_write(chr, &c, 1);
2040 }
2041 }
2042 }
2043 }
2044 }
2045 }
2046
2047 static DWORD WINAPI win_stdio_thread(LPVOID param)
2048 {
2049 CharDriverState *chr = param;
2050 WinStdioCharState *stdio = chr->opaque;
2051 int ret;
2052 DWORD dwSize;
2053
2054 while (1) {
2055
2056 /* Wait for one byte */
2057 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
2058
2059 /* Exit in case of error, continue if nothing read */
2060 if (!ret) {
2061 break;
2062 }
2063 if (!dwSize) {
2064 continue;
2065 }
2066
2067 /* Some terminal emulator returns \r\n for Enter, just pass \n */
2068 if (stdio->win_stdio_buf == '\r') {
2069 continue;
2070 }
2071
2072 /* Signal the main thread and wait until the byte was eaten */
2073 if (!SetEvent(stdio->hInputReadyEvent)) {
2074 break;
2075 }
2076 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
2077 != WAIT_OBJECT_0) {
2078 break;
2079 }
2080 }
2081
2082 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2083 return 0;
2084 }
2085
2086 static void win_stdio_thread_wait_func(void *opaque)
2087 {
2088 CharDriverState *chr = opaque;
2089 WinStdioCharState *stdio = chr->opaque;
2090
2091 if (qemu_chr_be_can_write(chr)) {
2092 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
2093 }
2094
2095 SetEvent(stdio->hInputDoneEvent);
2096 }
2097
2098 static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
2099 {
2100 WinStdioCharState *stdio = chr->opaque;
2101 DWORD dwMode = 0;
2102
2103 GetConsoleMode(stdio->hStdIn, &dwMode);
2104
2105 if (echo) {
2106 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
2107 } else {
2108 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
2109 }
2110 }
2111
2112 static void win_stdio_close(CharDriverState *chr)
2113 {
2114 WinStdioCharState *stdio = chr->opaque;
2115
2116 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
2117 CloseHandle(stdio->hInputReadyEvent);
2118 }
2119 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
2120 CloseHandle(stdio->hInputDoneEvent);
2121 }
2122 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
2123 TerminateThread(stdio->hInputThread, 0);
2124 }
2125
2126 g_free(chr->opaque);
2127 g_free(chr);
2128 }
2129
2130 static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
2131 {
2132 CharDriverState *chr;
2133 WinStdioCharState *stdio;
2134 DWORD dwMode;
2135 int is_console = 0;
2136
2137 chr = g_malloc0(sizeof(CharDriverState));
2138 stdio = g_malloc0(sizeof(WinStdioCharState));
2139
2140 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
2141 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
2142 fprintf(stderr, "cannot open stdio: invalid handle\n");
2143 exit(1);
2144 }
2145
2146 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
2147
2148 chr->opaque = stdio;
2149 chr->chr_write = win_stdio_write;
2150 chr->chr_close = win_stdio_close;
2151
2152 if (is_console) {
2153 if (qemu_add_wait_object(stdio->hStdIn,
2154 win_stdio_wait_func, chr)) {
2155 fprintf(stderr, "qemu_add_wait_object: failed\n");
2156 }
2157 } else {
2158 DWORD dwId;
2159
2160 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2161 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2162 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
2163 chr, 0, &dwId);
2164
2165 if (stdio->hInputThread == INVALID_HANDLE_VALUE
2166 || stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
2167 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
2168 fprintf(stderr, "cannot create stdio thread or event\n");
2169 exit(1);
2170 }
2171 if (qemu_add_wait_object(stdio->hInputReadyEvent,
2172 win_stdio_thread_wait_func, chr)) {
2173 fprintf(stderr, "qemu_add_wait_object: failed\n");
2174 }
2175 }
2176
2177 dwMode |= ENABLE_LINE_INPUT;
2178
2179 if (is_console) {
2180 /* set the terminal in raw mode */
2181 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2182 dwMode |= ENABLE_PROCESSED_INPUT;
2183 }
2184
2185 SetConsoleMode(stdio->hStdIn, dwMode);
2186
2187 chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
2188 qemu_chr_fe_set_echo(chr, false);
2189
2190 return chr;
2191 }
2192 #endif /* !_WIN32 */
2193
2194
2195 /***********************************************************/
2196 /* UDP Net console */
2197
2198 typedef struct {
2199 int fd;
2200 GIOChannel *chan;
2201 guint tag;
2202 uint8_t buf[READ_BUF_LEN];
2203 int bufcnt;
2204 int bufptr;
2205 int max_size;
2206 } NetCharDriver;
2207
2208 static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2209 {
2210 NetCharDriver *s = chr->opaque;
2211 gsize bytes_written;
2212 GIOStatus status;
2213
2214 status = g_io_channel_write_chars(s->chan, (const gchar *)buf, len, &bytes_written, NULL);
2215 if (status == G_IO_STATUS_EOF) {
2216 return 0;
2217 } else if (status != G_IO_STATUS_NORMAL) {
2218 return -1;
2219 }
2220
2221 return bytes_written;
2222 }
2223
2224 static int udp_chr_read_poll(void *opaque)
2225 {
2226 CharDriverState *chr = opaque;
2227 NetCharDriver *s = chr->opaque;
2228
2229 s->max_size = qemu_chr_be_can_write(chr);
2230
2231 /* If there were any stray characters in the queue process them
2232 * first
2233 */
2234 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
2235 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
2236 s->bufptr++;
2237 s->max_size = qemu_chr_be_can_write(chr);
2238 }
2239 return s->max_size;
2240 }
2241
2242 static gboolean udp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
2243 {
2244 CharDriverState *chr = opaque;
2245 NetCharDriver *s = chr->opaque;
2246 gsize bytes_read = 0;
2247 GIOStatus status;
2248
2249 if (s->max_size == 0)
2250 return FALSE;
2251 status = g_io_channel_read_chars(s->chan, (gchar *)s->buf, sizeof(s->buf),
2252 &bytes_read, NULL);
2253 s->bufcnt = bytes_read;
2254 s->bufptr = s->bufcnt;
2255 if (status != G_IO_STATUS_NORMAL) {
2256 return FALSE;
2257 }
2258
2259 s->bufptr = 0;
2260 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
2261 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
2262 s->bufptr++;
2263 s->max_size = qemu_chr_be_can_write(chr);
2264 }
2265
2266 return TRUE;
2267 }
2268
2269 static void udp_chr_update_read_handler(CharDriverState *chr)
2270 {
2271 NetCharDriver *s = chr->opaque;
2272
2273 if (s->tag) {
2274 g_source_remove(s->tag);
2275 s->tag = 0;
2276 }
2277
2278 if (s->chan) {
2279 s->tag = io_add_watch_poll(s->chan, udp_chr_read_poll, udp_chr_read, chr);
2280 }
2281 }
2282
2283 static void udp_chr_close(CharDriverState *chr)
2284 {
2285 NetCharDriver *s = chr->opaque;
2286 if (s->tag) {
2287 g_source_remove(s->tag);
2288 }
2289 if (s->chan) {
2290 g_io_channel_unref(s->chan);
2291 closesocket(s->fd);
2292 }
2293 g_free(s);
2294 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2295 }
2296
2297 static CharDriverState *qemu_chr_open_udp_fd(int fd)
2298 {
2299 CharDriverState *chr = NULL;
2300 NetCharDriver *s = NULL;
2301
2302 chr = g_malloc0(sizeof(CharDriverState));
2303 s = g_malloc0(sizeof(NetCharDriver));
2304
2305 s->fd = fd;
2306 s->chan = io_channel_from_socket(s->fd);
2307 s->bufcnt = 0;
2308 s->bufptr = 0;
2309 chr->opaque = s;
2310 chr->chr_write = udp_chr_write;
2311 chr->chr_update_read_handler = udp_chr_update_read_handler;
2312 chr->chr_close = udp_chr_close;
2313 return chr;
2314 }
2315
2316 static CharDriverState *qemu_chr_open_udp(QemuOpts *opts)
2317 {
2318 Error *local_err = NULL;
2319 int fd = -1;
2320
2321 fd = inet_dgram_opts(opts, &local_err);
2322 if (fd < 0) {
2323 return NULL;
2324 }
2325 return qemu_chr_open_udp_fd(fd);
2326 }
2327
2328 /***********************************************************/
2329 /* TCP Net console */
2330
2331 typedef struct {
2332
2333 GIOChannel *chan, *listen_chan;
2334 guint tag, listen_tag;
2335 int fd, listen_fd;
2336 int connected;
2337 int max_size;
2338 int do_telnetopt;
2339 int do_nodelay;
2340 int is_unix;
2341 int msgfd;
2342 } TCPCharDriver;
2343
2344 static gboolean tcp_chr_accept(GIOChannel *chan, GIOCondition cond, void *opaque);
2345
2346 static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2347 {
2348 TCPCharDriver *s = chr->opaque;
2349 if (s->connected) {
2350 return io_channel_send_all(s->chan, buf, len);
2351 } else {
2352 /* XXX: indicate an error ? */
2353 return len;
2354 }
2355 }
2356
2357 static int tcp_chr_read_poll(void *opaque)
2358 {
2359 CharDriverState *chr = opaque;
2360 TCPCharDriver *s = chr->opaque;
2361 if (!s->connected)
2362 return 0;
2363 s->max_size = qemu_chr_be_can_write(chr);
2364 return s->max_size;
2365 }
2366
2367 #define IAC 255
2368 #define IAC_BREAK 243
2369 static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
2370 TCPCharDriver *s,
2371 uint8_t *buf, int *size)
2372 {
2373 /* Handle any telnet client's basic IAC options to satisfy char by
2374 * char mode with no echo. All IAC options will be removed from
2375 * the buf and the do_telnetopt variable will be used to track the
2376 * state of the width of the IAC information.
2377 *
2378 * IAC commands come in sets of 3 bytes with the exception of the
2379 * "IAC BREAK" command and the double IAC.
2380 */
2381
2382 int i;
2383 int j = 0;
2384
2385 for (i = 0; i < *size; i++) {
2386 if (s->do_telnetopt > 1) {
2387 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2388 /* Double IAC means send an IAC */
2389 if (j != i)
2390 buf[j] = buf[i];
2391 j++;
2392 s->do_telnetopt = 1;
2393 } else {
2394 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2395 /* Handle IAC break commands by sending a serial break */
2396 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
2397 s->do_telnetopt++;
2398 }
2399 s->do_telnetopt++;
2400 }
2401 if (s->do_telnetopt >= 4) {
2402 s->do_telnetopt = 1;
2403 }
2404 } else {
2405 if ((unsigned char)buf[i] == IAC) {
2406 s->do_telnetopt = 2;
2407 } else {
2408 if (j != i)
2409 buf[j] = buf[i];
2410 j++;
2411 }
2412 }
2413 }
2414 *size = j;
2415 }
2416
2417 static int tcp_get_msgfd(CharDriverState *chr)
2418 {
2419 TCPCharDriver *s = chr->opaque;
2420 int fd = s->msgfd;
2421 s->msgfd = -1;
2422 return fd;
2423 }
2424
2425 #ifndef _WIN32
2426 static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
2427 {
2428 TCPCharDriver *s = chr->opaque;
2429 struct cmsghdr *cmsg;
2430
2431 for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
2432 int fd;
2433
2434 if (cmsg->cmsg_len != CMSG_LEN(sizeof(int)) ||
2435 cmsg->cmsg_level != SOL_SOCKET ||
2436 cmsg->cmsg_type != SCM_RIGHTS)
2437 continue;
2438
2439 fd = *((int *)CMSG_DATA(cmsg));
2440 if (fd < 0)
2441 continue;
2442
2443 #ifndef MSG_CMSG_CLOEXEC
2444 qemu_set_cloexec(fd);
2445 #endif
2446 if (s->msgfd != -1)
2447 close(s->msgfd);
2448 s->msgfd = fd;
2449 }
2450 }
2451
2452 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2453 {
2454 TCPCharDriver *s = chr->opaque;
2455 struct msghdr msg = { NULL, };
2456 struct iovec iov[1];
2457 union {
2458 struct cmsghdr cmsg;
2459 char control[CMSG_SPACE(sizeof(int))];
2460 } msg_control;
2461 int flags = 0;
2462 ssize_t ret;
2463
2464 iov[0].iov_base = buf;
2465 iov[0].iov_len = len;
2466
2467 msg.msg_iov = iov;
2468 msg.msg_iovlen = 1;
2469 msg.msg_control = &msg_control;
2470 msg.msg_controllen = sizeof(msg_control);
2471
2472 #ifdef MSG_CMSG_CLOEXEC
2473 flags |= MSG_CMSG_CLOEXEC;
2474 #endif
2475 ret = recvmsg(s->fd, &msg, flags);
2476 if (ret > 0 && s->is_unix) {
2477 unix_process_msgfd(chr, &msg);
2478 }
2479
2480 return ret;
2481 }
2482 #else
2483 static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2484 {
2485 TCPCharDriver *s = chr->opaque;
2486 return qemu_recv(s->fd, buf, len, 0);
2487 }
2488 #endif
2489
2490 static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
2491 {
2492 TCPCharDriver *s = chr->opaque;
2493 return g_io_create_watch(s->chan, cond);
2494 }
2495
2496 static gboolean tcp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
2497 {
2498 CharDriverState *chr = opaque;
2499 TCPCharDriver *s = chr->opaque;
2500 uint8_t buf[READ_BUF_LEN];
2501 int len, size;
2502
2503 if (!s->connected || s->max_size <= 0) {
2504 return FALSE;
2505 }
2506 len = sizeof(buf);
2507 if (len > s->max_size)
2508 len = s->max_size;
2509 size = tcp_chr_recv(chr, (void *)buf, len);
2510 if (size == 0) {
2511 /* connection closed */
2512 s->connected = 0;
2513 if (s->listen_chan) {
2514 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr);
2515 }
2516 g_source_remove(s->tag);
2517 s->tag = 0;
2518 g_io_channel_unref(s->chan);
2519 s->chan = NULL;
2520 closesocket(s->fd);
2521 s->fd = -1;
2522 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2523 } else if (size > 0) {
2524 if (s->do_telnetopt)
2525 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2526 if (size > 0)
2527 qemu_chr_be_write(chr, buf, size);
2528 }
2529
2530 return TRUE;
2531 }
2532
2533 #ifndef _WIN32
2534 CharDriverState *qemu_chr_open_eventfd(int eventfd)
2535 {
2536 return qemu_chr_open_fd(eventfd, eventfd);
2537 }
2538 #endif
2539
2540 static void tcp_chr_connect(void *opaque)
2541 {
2542 CharDriverState *chr = opaque;
2543 TCPCharDriver *s = chr->opaque;
2544
2545 s->connected = 1;
2546 if (s->chan) {
2547 s->tag = io_add_watch_poll(s->chan, tcp_chr_read_poll, tcp_chr_read, chr);
2548 }
2549 qemu_chr_be_generic_open(chr);
2550 }
2551
2552 #define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
2553 static void tcp_chr_telnet_init(int fd)
2554 {
2555 char buf[3];
2556 /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
2557 IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2558 send(fd, (char *)buf, 3, 0);
2559 IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2560 send(fd, (char *)buf, 3, 0);
2561 IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2562 send(fd, (char *)buf, 3, 0);
2563 IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2564 send(fd, (char *)buf, 3, 0);
2565 }
2566
2567 static int tcp_chr_add_client(CharDriverState *chr, int fd)
2568 {
2569 TCPCharDriver *s = chr->opaque;
2570 if (s->fd != -1)
2571 return -1;
2572
2573 socket_set_nonblock(fd);
2574 if (s->do_nodelay)
2575 socket_set_nodelay(fd);
2576 s->fd = fd;
2577 s->chan = io_channel_from_socket(fd);
2578 g_source_remove(s->listen_tag);
2579 s->listen_tag = 0;
2580 tcp_chr_connect(chr);
2581
2582 return 0;
2583 }
2584
2585 static gboolean tcp_chr_accept(GIOChannel *channel, GIOCondition cond, void *opaque)
2586 {
2587 CharDriverState *chr = opaque;
2588 TCPCharDriver *s = chr->opaque;
2589 struct sockaddr_in saddr;
2590 #ifndef _WIN32
2591 struct sockaddr_un uaddr;
2592 #endif
2593 struct sockaddr *addr;
2594 socklen_t len;
2595 int fd;
2596
2597 for(;;) {
2598 #ifndef _WIN32
2599 if (s->is_unix) {
2600 len = sizeof(uaddr);
2601 addr = (struct sockaddr *)&uaddr;
2602 } else
2603 #endif
2604 {
2605 len = sizeof(saddr);
2606 addr = (struct sockaddr *)&saddr;
2607 }
2608 fd = qemu_accept(s->listen_fd, addr, &len);
2609 if (fd < 0 && errno != EINTR) {
2610 return FALSE;
2611 } else if (fd >= 0) {
2612 if (s->do_telnetopt)
2613 tcp_chr_telnet_init(fd);
2614 break;
2615 }
2616 }
2617 if (tcp_chr_add_client(chr, fd) < 0)
2618 close(fd);
2619
2620 return TRUE;
2621 }
2622
2623 static void tcp_chr_close(CharDriverState *chr)
2624 {
2625 TCPCharDriver *s = chr->opaque;
2626 if (s->fd >= 0) {
2627 if (s->tag) {
2628 g_source_remove(s->tag);
2629 }
2630 if (s->chan) {
2631 g_io_channel_unref(s->chan);
2632 }
2633 closesocket(s->fd);
2634 }
2635 if (s->listen_fd >= 0) {
2636 if (s->listen_tag) {
2637 g_source_remove(s->listen_tag);
2638 }
2639 if (s->listen_chan) {
2640 g_io_channel_unref(s->listen_chan);
2641 }
2642 closesocket(s->listen_fd);
2643 }
2644 g_free(s);
2645 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2646 }
2647
2648 static CharDriverState *qemu_chr_open_socket_fd(int fd, bool do_nodelay,
2649 bool is_listen, bool is_telnet,
2650 bool is_waitconnect,
2651 Error **errp)
2652 {
2653 CharDriverState *chr = NULL;
2654 TCPCharDriver *s = NULL;
2655 char host[NI_MAXHOST], serv[NI_MAXSERV];
2656 const char *left = "", *right = "";
2657 struct sockaddr_storage ss;
2658 socklen_t ss_len = sizeof(ss);
2659
2660 memset(&ss, 0, ss_len);
2661 if (getsockname(fd, (struct sockaddr *) &ss, &ss_len) != 0) {
2662 error_setg(errp, "getsockname: %s", strerror(errno));
2663 return NULL;
2664 }
2665
2666 chr = g_malloc0(sizeof(CharDriverState));
2667 s = g_malloc0(sizeof(TCPCharDriver));
2668
2669 s->connected = 0;
2670 s->fd = -1;
2671 s->listen_fd = -1;
2672 s->msgfd = -1;
2673
2674 chr->filename = g_malloc(256);
2675 switch (ss.ss_family) {
2676 #ifndef _WIN32
2677 case AF_UNIX:
2678 s->is_unix = 1;
2679 snprintf(chr->filename, 256, "unix:%s%s",
2680 ((struct sockaddr_un *)(&ss))->sun_path,
2681 is_listen ? ",server" : "");
2682 break;
2683 #endif
2684 case AF_INET6:
2685 left = "[";
2686 right = "]";
2687 /* fall through */
2688 case AF_INET:
2689 s->do_nodelay = do_nodelay;
2690 getnameinfo((struct sockaddr *) &ss, ss_len, host, sizeof(host),
2691 serv, sizeof(serv), NI_NUMERICHOST | NI_NUMERICSERV);
2692 snprintf(chr->filename, 256, "%s:%s%s%s:%s%s",
2693 is_telnet ? "telnet" : "tcp",
2694 left, host, right, serv,
2695 is_listen ? ",server" : "");
2696 break;
2697 }
2698
2699 chr->opaque = s;
2700 chr->chr_write = tcp_chr_write;
2701 chr->chr_close = tcp_chr_close;
2702 chr->get_msgfd = tcp_get_msgfd;
2703 chr->chr_add_client = tcp_chr_add_client;
2704 chr->chr_add_watch = tcp_chr_add_watch;
2705
2706 if (is_listen) {
2707 s->listen_fd = fd;
2708 s->listen_chan = io_channel_from_socket(s->listen_fd);
2709 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr);
2710 if (is_telnet) {
2711 s->do_telnetopt = 1;
2712 }
2713 } else {
2714 s->connected = 1;
2715 s->fd = fd;
2716 socket_set_nodelay(fd);
2717 s->chan = io_channel_from_socket(s->fd);
2718 tcp_chr_connect(chr);
2719 }
2720
2721 if (is_listen && is_waitconnect) {
2722 printf("QEMU waiting for connection on: %s\n",
2723 chr->filename);
2724 tcp_chr_accept(s->listen_chan, G_IO_IN, chr);
2725 socket_set_nonblock(s->listen_fd);
2726 }
2727 return chr;
2728 }
2729
2730 static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
2731 {
2732 CharDriverState *chr = NULL;
2733 Error *local_err = NULL;
2734 int fd = -1;
2735 int is_listen;
2736 int is_waitconnect;
2737 int do_nodelay;
2738 int is_unix;
2739 int is_telnet;
2740
2741 is_listen = qemu_opt_get_bool(opts, "server", 0);
2742 is_waitconnect = qemu_opt_get_bool(opts, "wait", 1);
2743 is_telnet = qemu_opt_get_bool(opts, "telnet", 0);
2744 do_nodelay = !qemu_opt_get_bool(opts, "delay", 1);
2745 is_unix = qemu_opt_get(opts, "path") != NULL;
2746 if (!is_listen)
2747 is_waitconnect = 0;
2748
2749 if (is_unix) {
2750 if (is_listen) {
2751 fd = unix_listen_opts(opts, &local_err);
2752 } else {
2753 fd = unix_connect_opts(opts, &local_err, NULL, NULL);
2754 }
2755 } else {
2756 if (is_listen) {
2757 fd = inet_listen_opts(opts, 0, &local_err);
2758 } else {
2759 fd = inet_connect_opts(opts, &local_err, NULL, NULL);
2760 }
2761 }
2762 if (fd < 0) {
2763 goto fail;
2764 }
2765
2766 if (!is_waitconnect)
2767 socket_set_nonblock(fd);
2768
2769 chr = qemu_chr_open_socket_fd(fd, do_nodelay, is_listen, is_telnet,
2770 is_waitconnect, &local_err);
2771 if (error_is_set(&local_err)) {
2772 goto fail;
2773 }
2774 return chr;
2775
2776
2777 fail:
2778 if (local_err) {
2779 qerror_report_err(local_err);
2780 error_free(local_err);
2781 }
2782 if (fd >= 0) {
2783 closesocket(fd);
2784 }
2785 if (chr) {
2786 g_free(chr->opaque);
2787 g_free(chr);
2788 }
2789 return NULL;
2790 }
2791
2792 /***********************************************************/
2793 /* Memory chardev */
2794 typedef struct {
2795 size_t outbuf_size;
2796 size_t outbuf_capacity;
2797 uint8_t *outbuf;
2798 } MemoryDriver;
2799
2800 static int mem_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2801 {
2802 MemoryDriver *d = chr->opaque;
2803
2804 /* TODO: the QString implementation has the same code, we should
2805 * introduce a generic way to do this in cutils.c */
2806 if (d->outbuf_capacity < d->outbuf_size + len) {
2807 /* grow outbuf */
2808 d->outbuf_capacity += len;
2809 d->outbuf_capacity *= 2;
2810 d->outbuf = g_realloc(d->outbuf, d->outbuf_capacity);
2811 }
2812
2813 memcpy(d->outbuf + d->outbuf_size, buf, len);
2814 d->outbuf_size += len;
2815
2816 return len;
2817 }
2818
2819 void qemu_chr_init_mem(CharDriverState *chr)
2820 {
2821 MemoryDriver *d;
2822
2823 d = g_malloc(sizeof(*d));
2824 d->outbuf_size = 0;
2825 d->outbuf_capacity = 4096;
2826 d->outbuf = g_malloc0(d->outbuf_capacity);
2827
2828 memset(chr, 0, sizeof(*chr));
2829 chr->opaque = d;
2830 chr->chr_write = mem_chr_write;
2831 }
2832
2833 QString *qemu_chr_mem_to_qs(CharDriverState *chr)
2834 {
2835 MemoryDriver *d = chr->opaque;
2836 return qstring_from_substr((char *) d->outbuf, 0, d->outbuf_size - 1);
2837 }
2838
2839 /* NOTE: this driver can not be closed with qemu_chr_delete()! */
2840 void qemu_chr_close_mem(CharDriverState *chr)
2841 {
2842 MemoryDriver *d = chr->opaque;
2843
2844 g_free(d->outbuf);
2845 g_free(chr->opaque);
2846 chr->opaque = NULL;
2847 chr->chr_write = NULL;
2848 }
2849
2850 size_t qemu_chr_mem_osize(const CharDriverState *chr)
2851 {
2852 const MemoryDriver *d = chr->opaque;
2853 return d->outbuf_size;
2854 }
2855
2856 /*********************************************************/
2857 /* Ring buffer chardev */
2858
2859 typedef struct {
2860 size_t size;
2861 size_t prod;
2862 size_t cons;
2863 uint8_t *cbuf;
2864 } RingBufCharDriver;
2865
2866 static size_t ringbuf_count(const CharDriverState *chr)
2867 {
2868 const RingBufCharDriver *d = chr->opaque;
2869
2870 return d->prod - d->cons;
2871 }
2872
2873 static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2874 {
2875 RingBufCharDriver *d = chr->opaque;
2876 int i;
2877
2878 if (!buf || (len < 0)) {
2879 return -1;
2880 }
2881
2882 for (i = 0; i < len; i++ ) {
2883 d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
2884 if (d->prod - d->cons > d->size) {
2885 d->cons = d->prod - d->size;
2886 }
2887 }
2888
2889 return 0;
2890 }
2891
2892 static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len)
2893 {
2894 RingBufCharDriver *d = chr->opaque;
2895 int i;
2896
2897 for (i = 0; i < len && d->cons != d->prod; i++) {
2898 buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
2899 }
2900
2901 return i;
2902 }
2903
2904 static void ringbuf_chr_close(struct CharDriverState *chr)
2905 {
2906 RingBufCharDriver *d = chr->opaque;
2907
2908 g_free(d->cbuf);
2909 g_free(d);
2910 chr->opaque = NULL;
2911 }
2912
2913 static CharDriverState *qemu_chr_open_ringbuf(ChardevRingbuf *opts,
2914 Error **errp)
2915 {
2916 CharDriverState *chr;
2917 RingBufCharDriver *d;
2918
2919 chr = g_malloc0(sizeof(CharDriverState));
2920 d = g_malloc(sizeof(*d));
2921
2922 d->size = opts->has_size ? opts->size : 65536;
2923
2924 /* The size must be power of 2 */
2925 if (d->size & (d->size - 1)) {
2926 error_setg(errp, "size of ringbuf chardev must be power of two");
2927 goto fail;
2928 }
2929
2930 d->prod = 0;
2931 d->cons = 0;
2932 d->cbuf = g_malloc0(d->size);
2933
2934 chr->opaque = d;
2935 chr->chr_write = ringbuf_chr_write;
2936 chr->chr_close = ringbuf_chr_close;
2937
2938 return chr;
2939
2940 fail:
2941 g_free(d);
2942 g_free(chr);
2943 return NULL;
2944 }
2945
2946 static bool chr_is_ringbuf(const CharDriverState *chr)
2947 {
2948 return chr->chr_write == ringbuf_chr_write;
2949 }
2950
2951 void qmp_ringbuf_write(const char *device, const char *data,
2952 bool has_format, enum DataFormat format,
2953 Error **errp)
2954 {
2955 CharDriverState *chr;
2956 const uint8_t *write_data;
2957 int ret;
2958 size_t write_count;
2959
2960 chr = qemu_chr_find(device);
2961 if (!chr) {
2962 error_setg(errp, "Device '%s' not found", device);
2963 return;
2964 }
2965
2966 if (!chr_is_ringbuf(chr)) {
2967 error_setg(errp,"%s is not a ringbuf device", device);
2968 return;
2969 }
2970
2971 if (has_format && (format == DATA_FORMAT_BASE64)) {
2972 write_data = g_base64_decode(data, &write_count);
2973 } else {
2974 write_data = (uint8_t *)data;
2975 write_count = strlen(data);
2976 }
2977
2978 ret = ringbuf_chr_write(chr, write_data, write_count);
2979
2980 if (write_data != (uint8_t *)data) {
2981 g_free((void *)write_data);
2982 }
2983
2984 if (ret < 0) {
2985 error_setg(errp, "Failed to write to device %s", device);
2986 return;
2987 }
2988 }
2989
2990 char *qmp_ringbuf_read(const char *device, int64_t size,
2991 bool has_format, enum DataFormat format,
2992 Error **errp)
2993 {
2994 CharDriverState *chr;
2995 uint8_t *read_data;
2996 size_t count;
2997 char *data;
2998
2999 chr = qemu_chr_find(device);
3000 if (!chr) {
3001 error_setg(errp, "Device '%s' not found", device);
3002 return NULL;
3003 }
3004
3005 if (!chr_is_ringbuf(chr)) {
3006 error_setg(errp,"%s is not a ringbuf device", device);
3007 return NULL;
3008 }
3009
3010 if (size <= 0) {
3011 error_setg(errp, "size must be greater than zero");
3012 return NULL;
3013 }
3014
3015 count = ringbuf_count(chr);
3016 size = size > count ? count : size;
3017 read_data = g_malloc(size + 1);
3018
3019 ringbuf_chr_read(chr, read_data, size);
3020
3021 if (has_format && (format == DATA_FORMAT_BASE64)) {
3022 data = g_base64_encode(read_data, size);
3023 g_free(read_data);
3024 } else {
3025 /*
3026 * FIXME should read only complete, valid UTF-8 characters up
3027 * to @size bytes. Invalid sequences should be replaced by a
3028 * suitable replacement character. Except when (and only
3029 * when) ring buffer lost characters since last read, initial
3030 * continuation characters should be dropped.
3031 */
3032 read_data[size] = 0;
3033 data = (char *)read_data;
3034 }
3035
3036 return data;
3037 }
3038
3039 QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
3040 {
3041 char host[65], port[33], width[8], height[8];
3042 int pos;
3043 const char *p;
3044 QemuOpts *opts;
3045 Error *local_err = NULL;
3046
3047 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
3048 if (error_is_set(&local_err)) {
3049 qerror_report_err(local_err);
3050 error_free(local_err);
3051 return NULL;
3052 }
3053
3054 if (strstart(filename, "mon:", &p)) {
3055 filename = p;
3056 qemu_opt_set(opts, "mux", "on");
3057 }
3058
3059 if (strcmp(filename, "null") == 0 ||
3060 strcmp(filename, "pty") == 0 ||
3061 strcmp(filename, "msmouse") == 0 ||
3062 strcmp(filename, "braille") == 0 ||
3063 strcmp(filename, "stdio") == 0) {
3064 qemu_opt_set(opts, "backend", filename);
3065 return opts;
3066 }
3067 if (strstart(filename, "vc", &p)) {
3068 qemu_opt_set(opts, "backend", "vc");
3069 if (*p == ':') {
3070 if (sscanf(p+1, "%8[0-9]x%8[0-9]", width, height) == 2) {
3071 /* pixels */
3072 qemu_opt_set(opts, "width", width);
3073 qemu_opt_set(opts, "height", height);
3074 } else if (sscanf(p+1, "%8[0-9]Cx%8[0-9]C", width, height) == 2) {
3075 /* chars */
3076 qemu_opt_set(opts, "cols", width);
3077 qemu_opt_set(opts, "rows", height);
3078 } else {
3079 goto fail;
3080 }
3081 }
3082 return opts;
3083 }
3084 if (strcmp(filename, "con:") == 0) {
3085 qemu_opt_set(opts, "backend", "console");
3086 return opts;
3087 }
3088 if (strstart(filename, "COM", NULL)) {
3089 qemu_opt_set(opts, "backend", "serial");
3090 qemu_opt_set(opts, "path", filename);
3091 return opts;
3092 }
3093 if (strstart(filename, "file:", &p)) {
3094 qemu_opt_set(opts, "backend", "file");
3095 qemu_opt_set(opts, "path", p);
3096 return opts;
3097 }
3098 if (strstart(filename, "pipe:", &p)) {
3099 qemu_opt_set(opts, "backend", "pipe");
3100 qemu_opt_set(opts, "path", p);
3101 return opts;
3102 }
3103 if (strstart(filename, "tcp:", &p) ||
3104 strstart(filename, "telnet:", &p)) {
3105 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3106 host[0] = 0;
3107 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
3108 goto fail;
3109 }
3110 qemu_opt_set(opts, "backend", "socket");
3111 qemu_opt_set(opts, "host", host);
3112 qemu_opt_set(opts, "port", port);
3113 if (p[pos] == ',') {
3114 if (qemu_opts_do_parse(opts, p+pos+1, NULL) != 0)
3115 goto fail;
3116 }
3117 if (strstart(filename, "telnet:", &p))
3118 qemu_opt_set(opts, "telnet", "on");
3119 return opts;
3120 }
3121 if (strstart(filename, "udp:", &p)) {
3122 qemu_opt_set(opts, "backend", "udp");
3123 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
3124 host[0] = 0;
3125 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
3126 goto fail;
3127 }
3128 }
3129 qemu_opt_set(opts, "host", host);
3130 qemu_opt_set(opts, "port", port);
3131 if (p[pos] == '@') {
3132 p += pos + 1;
3133 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3134 host[0] = 0;
3135 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
3136 goto fail;
3137 }
3138 }
3139 qemu_opt_set(opts, "localaddr", host);
3140 qemu_opt_set(opts, "localport", port);
3141 }
3142 return opts;
3143 }
3144 if (strstart(filename, "unix:", &p)) {
3145 qemu_opt_set(opts, "backend", "socket");
3146 if (qemu_opts_do_parse(opts, p, "path") != 0)
3147 goto fail;
3148 return opts;
3149 }
3150 if (strstart(filename, "/dev/parport", NULL) ||
3151 strstart(filename, "/dev/ppi", NULL)) {
3152 qemu_opt_set(opts, "backend", "parport");
3153 qemu_opt_set(opts, "path", filename);
3154 return opts;
3155 }
3156 if (strstart(filename, "/dev/", NULL)) {
3157 qemu_opt_set(opts, "backend", "tty");
3158 qemu_opt_set(opts, "path", filename);
3159 return opts;
3160 }
3161
3162 fail:
3163 qemu_opts_del(opts);
3164 return NULL;
3165 }
3166
3167 static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend,
3168 Error **errp)
3169 {
3170 const char *path = qemu_opt_get(opts, "path");
3171
3172 if (path == NULL) {
3173 error_setg(errp, "chardev: file: no filename given");
3174 return;
3175 }
3176 backend->file = g_new0(ChardevFile, 1);
3177 backend->file->out = g_strdup(path);
3178 }
3179
3180 static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend,
3181 Error **errp)
3182 {
3183 backend->stdio = g_new0(ChardevStdio, 1);
3184 backend->stdio->has_signal = true;
3185 backend->stdio->signal =
3186 qemu_opt_get_bool(opts, "signal", display_type != DT_NOGRAPHIC);
3187 }
3188
3189 static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend,
3190 Error **errp)
3191 {
3192 const char *device = qemu_opt_get(opts, "path");
3193
3194 if (device == NULL) {
3195 error_setg(errp, "chardev: serial/tty: no device path given");
3196 return;
3197 }
3198 backend->serial = g_new0(ChardevHostdev, 1);
3199 backend->serial->device = g_strdup(device);
3200 }
3201
3202 static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend,
3203 Error **errp)
3204 {
3205 const char *device = qemu_opt_get(opts, "path");
3206
3207 if (device == NULL) {
3208 error_setg(errp, "chardev: parallel: no device path given");
3209 return;
3210 }
3211 backend->parallel = g_new0(ChardevHostdev, 1);
3212 backend->parallel->device = g_strdup(device);
3213 }
3214
3215 static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend,
3216 Error **errp)
3217 {
3218 const char *device = qemu_opt_get(opts, "path");
3219
3220 if (device == NULL) {
3221 error_setg(errp, "chardev: pipe: no device path given");
3222 return;
3223 }
3224 backend->pipe = g_new0(ChardevHostdev, 1);
3225 backend->pipe->device = g_strdup(device);
3226 }
3227
3228 static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend,
3229 Error **errp)
3230 {
3231 int val;
3232
3233 backend->memory = g_new0(ChardevRingbuf, 1);
3234
3235 val = qemu_opt_get_number(opts, "size", 0);
3236 if (val != 0) {
3237 backend->memory->has_size = true;
3238 backend->memory->size = val;
3239 }
3240 }
3241
3242 typedef struct CharDriver {
3243 const char *name;
3244 /* old, pre qapi */
3245 CharDriverState *(*open)(QemuOpts *opts);
3246 /* new, qapi-based */
3247 int kind;
3248 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
3249 } CharDriver;
3250
3251 static GSList *backends;
3252
3253 void register_char_driver(const char *name, CharDriverState *(*open)(QemuOpts *))
3254 {
3255 CharDriver *s;
3256
3257 s = g_malloc0(sizeof(*s));
3258 s->name = g_strdup(name);
3259 s->open = open;
3260
3261 backends = g_slist_append(backends, s);
3262 }
3263
3264 void register_char_driver_qapi(const char *name, int kind,
3265 void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp))
3266 {
3267 CharDriver *s;
3268
3269 s = g_malloc0(sizeof(*s));
3270 s->name = g_strdup(name);
3271 s->kind = kind;
3272 s->parse = parse;
3273
3274 backends = g_slist_append(backends, s);
3275 }
3276
3277 CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
3278 void (*init)(struct CharDriverState *s),
3279 Error **errp)
3280 {
3281 CharDriver *cd;
3282 CharDriverState *chr;
3283 GSList *i;
3284
3285 if (qemu_opts_id(opts) == NULL) {
3286 error_setg(errp, "chardev: no id specified");
3287 goto err;
3288 }
3289
3290 if (qemu_opt_get(opts, "backend") == NULL) {
3291 error_setg(errp, "chardev: \"%s\" missing backend",
3292 qemu_opts_id(opts));
3293 goto err;
3294 }
3295 for (i = backends; i; i = i->next) {
3296 cd = i->data;
3297
3298 if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) {
3299 break;
3300 }
3301 }
3302 if (i == NULL) {
3303 error_setg(errp, "chardev: backend \"%s\" not found",
3304 qemu_opt_get(opts, "backend"));
3305 return NULL;
3306 }
3307
3308 if (!cd->open) {
3309 /* using new, qapi init */
3310 ChardevBackend *backend = g_new0(ChardevBackend, 1);
3311 ChardevReturn *ret = NULL;
3312 const char *id = qemu_opts_id(opts);
3313 const char *bid = NULL;
3314
3315 if (qemu_opt_get_bool(opts, "mux", 0)) {
3316 bid = g_strdup_printf("%s-base", id);
3317 }
3318
3319 chr = NULL;
3320 backend->kind = cd->kind;
3321 if (cd->parse) {
3322 cd->parse(opts, backend, errp);
3323 if (error_is_set(errp)) {
3324 goto qapi_out;
3325 }
3326 }
3327 ret = qmp_chardev_add(bid ? bid : id, backend, errp);
3328 if (error_is_set(errp)) {
3329 goto qapi_out;
3330 }
3331
3332 if (bid) {
3333 qapi_free_ChardevBackend(backend);
3334 qapi_free_ChardevReturn(ret);
3335 backend = g_new0(ChardevBackend, 1);
3336 backend->mux = g_new0(ChardevMux, 1);
3337 backend->kind = CHARDEV_BACKEND_KIND_MUX;
3338 backend->mux->chardev = g_strdup(bid);
3339 ret = qmp_chardev_add(id, backend, errp);
3340 if (error_is_set(errp)) {
3341 goto qapi_out;
3342 }
3343 }
3344
3345 chr = qemu_chr_find(id);
3346
3347 qapi_out:
3348 qapi_free_ChardevBackend(backend);
3349 qapi_free_ChardevReturn(ret);
3350 return chr;
3351 }
3352
3353 chr = cd->open(opts);
3354 if (!chr) {
3355 error_setg(errp, "chardev: opening backend \"%s\" failed",
3356 qemu_opt_get(opts, "backend"));
3357 goto err;
3358 }
3359
3360 if (!chr->filename)
3361 chr->filename = g_strdup(qemu_opt_get(opts, "backend"));
3362 chr->init = init;
3363 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3364
3365 if (qemu_opt_get_bool(opts, "mux", 0)) {
3366 CharDriverState *base = chr;
3367 int len = strlen(qemu_opts_id(opts)) + 6;
3368 base->label = g_malloc(len);
3369 snprintf(base->label, len, "%s-base", qemu_opts_id(opts));
3370 chr = qemu_chr_open_mux(base);
3371 chr->filename = base->filename;
3372 chr->avail_connections = MAX_MUX;
3373 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3374 } else {
3375 chr->avail_connections = 1;
3376 }
3377 chr->label = g_strdup(qemu_opts_id(opts));
3378 chr->opts = opts;
3379 return chr;
3380
3381 err:
3382 qemu_opts_del(opts);
3383 return NULL;
3384 }
3385
3386 CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
3387 {
3388 const char *p;
3389 CharDriverState *chr;
3390 QemuOpts *opts;
3391 Error *err = NULL;
3392
3393 if (strstart(filename, "chardev:", &p)) {
3394 return qemu_chr_find(p);
3395 }
3396
3397 opts = qemu_chr_parse_compat(label, filename);
3398 if (!opts)
3399 return NULL;
3400
3401 chr = qemu_chr_new_from_opts(opts, init, &err);
3402 if (error_is_set(&err)) {
3403 fprintf(stderr, "%s\n", error_get_pretty(err));
3404 error_free(err);
3405 }
3406 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
3407 monitor_init(chr, MONITOR_USE_READLINE);
3408 }
3409 return chr;
3410 }
3411
3412 void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo)
3413 {
3414 if (chr->chr_set_echo) {
3415 chr->chr_set_echo(chr, echo);
3416 }
3417 }
3418
3419 void qemu_chr_fe_set_open(struct CharDriverState *chr, int fe_open)
3420 {
3421 if (chr->fe_open == fe_open) {
3422 return;
3423 }
3424 chr->fe_open = fe_open;
3425 if (chr->chr_set_fe_open) {
3426 chr->chr_set_fe_open(chr, fe_open);
3427 }
3428 }
3429
3430 int qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond,
3431 GIOFunc func, void *user_data)
3432 {
3433 GSource *src;
3434 guint tag;
3435
3436 if (s->chr_add_watch == NULL) {
3437 return -ENOSYS;
3438 }
3439
3440 src = s->chr_add_watch(s, cond);
3441 g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
3442 tag = g_source_attach(src, NULL);
3443 g_source_unref(src);
3444
3445 return tag;
3446 }
3447
3448 void qemu_chr_delete(CharDriverState *chr)
3449 {
3450 QTAILQ_REMOVE(&chardevs, chr, next);
3451 if (chr->chr_close) {
3452 chr->chr_close(chr);
3453 }
3454 g_free(chr->filename);
3455 g_free(chr->label);
3456 if (chr->opts) {
3457 qemu_opts_del(chr->opts);
3458 }
3459 g_free(chr);
3460 }
3461
3462 ChardevInfoList *qmp_query_chardev(Error **errp)
3463 {
3464 ChardevInfoList *chr_list = NULL;
3465 CharDriverState *chr;
3466
3467 QTAILQ_FOREACH(chr, &chardevs, next) {
3468 ChardevInfoList *info = g_malloc0(sizeof(*info));
3469 info->value = g_malloc0(sizeof(*info->value));
3470 info->value->label = g_strdup(chr->label);
3471 info->value->filename = g_strdup(chr->filename);
3472
3473 info->next = chr_list;
3474 chr_list = info;
3475 }
3476
3477 return chr_list;
3478 }
3479
3480 CharDriverState *qemu_chr_find(const char *name)
3481 {
3482 CharDriverState *chr;
3483
3484 QTAILQ_FOREACH(chr, &chardevs, next) {
3485 if (strcmp(chr->label, name) != 0)
3486 continue;
3487 return chr;
3488 }
3489 return NULL;
3490 }
3491
3492 /* Get a character (serial) device interface. */
3493 CharDriverState *qemu_char_get_next_serial(void)
3494 {
3495 static int next_serial;
3496
3497 /* FIXME: This function needs to go away: use chardev properties! */
3498 return serial_hds[next_serial++];
3499 }
3500
3501 QemuOptsList qemu_chardev_opts = {
3502 .name = "chardev",
3503 .implied_opt_name = "backend",
3504 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
3505 .desc = {
3506 {
3507 .name = "backend",
3508 .type = QEMU_OPT_STRING,
3509 },{
3510 .name = "path",
3511 .type = QEMU_OPT_STRING,
3512 },{
3513 .name = "host",
3514 .type = QEMU_OPT_STRING,
3515 },{
3516 .name = "port",
3517 .type = QEMU_OPT_STRING,
3518 },{
3519 .name = "localaddr",
3520 .type = QEMU_OPT_STRING,
3521 },{
3522 .name = "localport",
3523 .type = QEMU_OPT_STRING,
3524 },{
3525 .name = "to",
3526 .type = QEMU_OPT_NUMBER,
3527 },{
3528 .name = "ipv4",
3529 .type = QEMU_OPT_BOOL,
3530 },{
3531 .name = "ipv6",
3532 .type = QEMU_OPT_BOOL,
3533 },{
3534 .name = "wait",
3535 .type = QEMU_OPT_BOOL,
3536 },{
3537 .name = "server",
3538 .type = QEMU_OPT_BOOL,
3539 },{
3540 .name = "delay",
3541 .type = QEMU_OPT_BOOL,
3542 },{
3543 .name = "telnet",
3544 .type = QEMU_OPT_BOOL,
3545 },{
3546 .name = "width",
3547 .type = QEMU_OPT_NUMBER,
3548 },{
3549 .name = "height",
3550 .type = QEMU_OPT_NUMBER,
3551 },{
3552 .name = "cols",
3553 .type = QEMU_OPT_NUMBER,
3554 },{
3555 .name = "rows",
3556 .type = QEMU_OPT_NUMBER,
3557 },{
3558 .name = "mux",
3559 .type = QEMU_OPT_BOOL,
3560 },{
3561 .name = "signal",
3562 .type = QEMU_OPT_BOOL,
3563 },{
3564 .name = "name",
3565 .type = QEMU_OPT_STRING,
3566 },{
3567 .name = "debug",
3568 .type = QEMU_OPT_NUMBER,
3569 },{
3570 .name = "size",
3571 .type = QEMU_OPT_SIZE,
3572 },
3573 { /* end of list */ }
3574 },
3575 };
3576
3577 #ifdef _WIN32
3578
3579 static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
3580 {
3581 HANDLE out;
3582
3583 if (file->in) {
3584 error_setg(errp, "input file not supported");
3585 return NULL;
3586 }
3587
3588 out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
3589 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
3590 if (out == INVALID_HANDLE_VALUE) {
3591 error_setg(errp, "open %s failed", file->out);
3592 return NULL;
3593 }
3594 return qemu_chr_open_win_file(out);
3595 }
3596
3597 static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
3598 Error **errp)
3599 {
3600 return qemu_chr_open_win_path(serial->device);
3601 }
3602
3603 static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
3604 Error **errp)
3605 {
3606 error_setg(errp, "character device backend type 'parallel' not supported");
3607 return NULL;
3608 }
3609
3610 #else /* WIN32 */
3611
3612 static int qmp_chardev_open_file_source(char *src, int flags,
3613 Error **errp)
3614 {
3615 int fd = -1;
3616
3617 TFR(fd = qemu_open(src, flags, 0666));
3618 if (fd == -1) {
3619 error_setg(errp, "open %s: %s", src, strerror(errno));
3620 }
3621 return fd;
3622 }
3623
3624 static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
3625 {
3626 int flags, in = -1, out = -1;
3627
3628 flags = O_WRONLY | O_TRUNC | O_CREAT | O_BINARY;
3629 out = qmp_chardev_open_file_source(file->out, flags, errp);
3630 if (error_is_set(errp)) {
3631 return NULL;
3632 }
3633
3634 if (file->in) {
3635 flags = O_RDONLY;
3636 in = qmp_chardev_open_file_source(file->in, flags, errp);
3637 if (error_is_set(errp)) {
3638 qemu_close(out);
3639 return NULL;
3640 }
3641 }
3642
3643 return qemu_chr_open_fd(in, out);
3644 }
3645
3646 static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
3647 Error **errp)
3648 {
3649 #ifdef HAVE_CHARDEV_TTY
3650 int fd;
3651
3652 fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
3653 if (error_is_set(errp)) {
3654 return NULL;
3655 }
3656 socket_set_nonblock(fd);
3657 return qemu_chr_open_tty_fd(fd);
3658 #else
3659 error_setg(errp, "character device backend type 'serial' not supported");
3660 return NULL;
3661 #endif
3662 }
3663
3664 static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
3665 Error **errp)
3666 {
3667 #ifdef HAVE_CHARDEV_PARPORT
3668 int fd;
3669
3670 fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
3671 if (error_is_set(errp)) {
3672 return NULL;
3673 }
3674 return qemu_chr_open_pp_fd(fd);
3675 #else
3676 error_setg(errp, "character device backend type 'parallel' not supported");
3677 return NULL;
3678 #endif
3679 }
3680
3681 #endif /* WIN32 */
3682
3683 static CharDriverState *qmp_chardev_open_socket(ChardevSocket *sock,
3684 Error **errp)
3685 {
3686 SocketAddress *addr = sock->addr;
3687 bool do_nodelay = sock->has_nodelay ? sock->nodelay : false;
3688 bool is_listen = sock->has_server ? sock->server : true;
3689 bool is_telnet = sock->has_telnet ? sock->telnet : false;
3690 bool is_waitconnect = sock->has_wait ? sock->wait : false;
3691 int fd;
3692
3693 if (is_listen) {
3694 fd = socket_listen(addr, errp);
3695 } else {
3696 fd = socket_connect(addr, errp, NULL, NULL);
3697 }
3698 if (error_is_set(errp)) {
3699 return NULL;
3700 }
3701 return qemu_chr_open_socket_fd(fd, do_nodelay, is_listen,
3702 is_telnet, is_waitconnect, errp);
3703 }
3704
3705 static CharDriverState *qmp_chardev_open_dgram(ChardevDgram *dgram,
3706 Error **errp)
3707 {
3708 int fd;
3709
3710 fd = socket_dgram(dgram->remote, dgram->local, errp);
3711 if (error_is_set(errp)) {
3712 return NULL;
3713 }
3714 return qemu_chr_open_udp_fd(fd);
3715 }
3716
3717 ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
3718 Error **errp)
3719 {
3720 ChardevReturn *ret = g_new0(ChardevReturn, 1);
3721 CharDriverState *base, *chr = NULL;
3722
3723 chr = qemu_chr_find(id);
3724 if (chr) {
3725 error_setg(errp, "Chardev '%s' already exists", id);
3726 g_free(ret);
3727 return NULL;
3728 }
3729
3730 switch (backend->kind) {
3731 case CHARDEV_BACKEND_KIND_FILE:
3732 chr = qmp_chardev_open_file(backend->file, errp);
3733 break;
3734 case CHARDEV_BACKEND_KIND_SERIAL:
3735 chr = qmp_chardev_open_serial(backend->serial, errp);
3736 break;
3737 case CHARDEV_BACKEND_KIND_PARALLEL:
3738 chr = qmp_chardev_open_parallel(backend->parallel, errp);
3739 break;
3740 case CHARDEV_BACKEND_KIND_PIPE:
3741 chr = qemu_chr_open_pipe(backend->pipe);
3742 break;
3743 case CHARDEV_BACKEND_KIND_SOCKET:
3744 chr = qmp_chardev_open_socket(backend->socket, errp);
3745 break;
3746 case CHARDEV_BACKEND_KIND_DGRAM:
3747 chr = qmp_chardev_open_dgram(backend->dgram, errp);
3748 break;
3749 #ifdef HAVE_CHARDEV_TTY
3750 case CHARDEV_BACKEND_KIND_PTY:
3751 chr = qemu_chr_open_pty(id, ret);
3752 break;
3753 #endif
3754 case CHARDEV_BACKEND_KIND_NULL:
3755 chr = qemu_chr_open_null();
3756 break;
3757 case CHARDEV_BACKEND_KIND_MUX:
3758 base = qemu_chr_find(backend->mux->chardev);
3759 if (base == NULL) {
3760 error_setg(errp, "mux: base chardev %s not found",
3761 backend->mux->chardev);
3762 break;
3763 }
3764 chr = qemu_chr_open_mux(base);
3765 break;
3766 case CHARDEV_BACKEND_KIND_MSMOUSE:
3767 chr = qemu_chr_open_msmouse();
3768 break;
3769 #ifdef CONFIG_BRLAPI
3770 case CHARDEV_BACKEND_KIND_BRAILLE:
3771 chr = chr_baum_init();
3772 break;
3773 #endif
3774 case CHARDEV_BACKEND_KIND_STDIO:
3775 chr = qemu_chr_open_stdio(backend->stdio);
3776 break;
3777 #ifdef _WIN32
3778 case CHARDEV_BACKEND_KIND_CONSOLE:
3779 chr = qemu_chr_open_win_con();
3780 break;
3781 #endif
3782 #ifdef CONFIG_SPICE
3783 case CHARDEV_BACKEND_KIND_SPICEVMC:
3784 chr = qemu_chr_open_spice_vmc(backend->spicevmc->type);
3785 break;
3786 case CHARDEV_BACKEND_KIND_SPICEPORT:
3787 chr = qemu_chr_open_spice_port(backend->spiceport->fqdn);
3788 break;
3789 #endif
3790 case CHARDEV_BACKEND_KIND_VC:
3791 chr = vc_init(backend->vc);
3792 break;
3793 case CHARDEV_BACKEND_KIND_MEMORY:
3794 chr = qemu_chr_open_ringbuf(backend->memory, errp);
3795 break;
3796 default:
3797 error_setg(errp, "unknown chardev backend (%d)", backend->kind);
3798 break;
3799 }
3800
3801 if (chr == NULL && !error_is_set(errp)) {
3802 error_setg(errp, "Failed to create chardev");
3803 }
3804 if (chr) {
3805 chr->label = g_strdup(id);
3806 chr->avail_connections =
3807 (backend->kind == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1;
3808 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3809 return ret;
3810 } else {
3811 g_free(ret);
3812 return NULL;
3813 }
3814 }
3815
3816 void qmp_chardev_remove(const char *id, Error **errp)
3817 {
3818 CharDriverState *chr;
3819
3820 chr = qemu_chr_find(id);
3821 if (NULL == chr) {
3822 error_setg(errp, "Chardev '%s' not found", id);
3823 return;
3824 }
3825 if (chr->chr_can_read || chr->chr_read ||
3826 chr->chr_event || chr->handler_opaque) {
3827 error_setg(errp, "Chardev '%s' is busy", id);
3828 return;
3829 }
3830 qemu_chr_delete(chr);
3831 }
3832
3833 static void register_types(void)
3834 {
3835 register_char_driver_qapi("null", CHARDEV_BACKEND_KIND_NULL, NULL);
3836 register_char_driver("socket", qemu_chr_open_socket);
3837 register_char_driver("udp", qemu_chr_open_udp);
3838 register_char_driver_qapi("memory", CHARDEV_BACKEND_KIND_MEMORY,
3839 qemu_chr_parse_ringbuf);
3840 register_char_driver_qapi("file", CHARDEV_BACKEND_KIND_FILE,
3841 qemu_chr_parse_file_out);
3842 register_char_driver_qapi("stdio", CHARDEV_BACKEND_KIND_STDIO,
3843 qemu_chr_parse_stdio);
3844 register_char_driver_qapi("serial", CHARDEV_BACKEND_KIND_SERIAL,
3845 qemu_chr_parse_serial);
3846 register_char_driver_qapi("tty", CHARDEV_BACKEND_KIND_SERIAL,
3847 qemu_chr_parse_serial);
3848 register_char_driver_qapi("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
3849 qemu_chr_parse_parallel);
3850 register_char_driver_qapi("parport", CHARDEV_BACKEND_KIND_PARALLEL,
3851 qemu_chr_parse_parallel);
3852 register_char_driver_qapi("pty", CHARDEV_BACKEND_KIND_PTY, NULL);
3853 register_char_driver_qapi("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL);
3854 register_char_driver_qapi("pipe", CHARDEV_BACKEND_KIND_PIPE,
3855 qemu_chr_parse_pipe);
3856 }
3857
3858 type_init(register_types);
Qemu with PowerPC KVM improvements