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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 "hw/baum.h"
32#include "hw/msmouse.h"
33#include "qmp-commands.h"
34
35#include <unistd.h>
36#include <fcntl.h>
37#include <time.h>
38#include <errno.h>
39#include <sys/time.h>
40#include <zlib.h>
41
42#ifndef _WIN32
43#include <sys/times.h>
44#include <sys/wait.h>
45#include <termios.h>
46#include <sys/mman.h>
47#include <sys/ioctl.h>
48#include <sys/resource.h>
49#include <sys/socket.h>
50#include <netinet/in.h>
51#include <net/if.h>
52#include <arpa/inet.h>
53#include <dirent.h>
54#include <netdb.h>
55#include <sys/select.h>
56#ifdef CONFIG_BSD
57#include <sys/stat.h>
58#if defined(__GLIBC__)
59#include <pty.h>
60#elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
61#include <libutil.h>
62#else
63#include <util.h>
64#endif
65#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
66#include <dev/ppbus/ppi.h>
67#include <dev/ppbus/ppbconf.h>
68#elif defined(__DragonFly__)
69#include <dev/misc/ppi/ppi.h>
70#include <bus/ppbus/ppbconf.h>
71#endif
72#else
73#ifdef __linux__
74#include <pty.h>
75
76#include <linux/ppdev.h>
77#include <linux/parport.h>
78#endif
79#ifdef __sun__
80#include <sys/stat.h>
81#include <sys/ethernet.h>
82#include <sys/sockio.h>
83#include <netinet/arp.h>
84#include <netinet/in.h>
85#include <netinet/in_systm.h>
86#include <netinet/ip.h>
87#include <netinet/ip_icmp.h> // must come after ip.h
88#include <netinet/udp.h>
89#include <netinet/tcp.h>
90#include <net/if.h>
91#include <syslog.h>
92#include <stropts.h>
93#endif
94#endif
95#endif
96
97#include "qemu/sockets.h"
98#include "ui/qemu-spice.h"
99
100#define READ_BUF_LEN 4096
101
102/***********************************************************/
103/* character device */
104
105static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
106 QTAILQ_HEAD_INITIALIZER(chardevs);
107
108void qemu_chr_be_event(CharDriverState *s, int event)
109{
110 /* Keep track if the char device is open */
111 switch (event) {
112 case CHR_EVENT_OPENED:
113 s->opened = 1;
114 break;
115 case CHR_EVENT_CLOSED:
116 s->opened = 0;
117 break;
118 }
119
120 if (!s->chr_event)
121 return;
122 s->chr_event(s->handler_opaque, event);
123}
124
125static void qemu_chr_fire_open_event(void *opaque)
126{
127 CharDriverState *s = opaque;
128 qemu_chr_be_event(s, CHR_EVENT_OPENED);
129 qemu_free_timer(s->open_timer);
130 s->open_timer = NULL;
131}
132
133void qemu_chr_generic_open(CharDriverState *s)
134{
135 if (s->open_timer == NULL) {
136 s->open_timer = qemu_new_timer_ms(rt_clock,
137 qemu_chr_fire_open_event, s);
138 qemu_mod_timer(s->open_timer, qemu_get_clock_ms(rt_clock) - 1);
139 }
140}
141
142int qemu_chr_fe_write(CharDriverState *s, const uint8_t *buf, int len)
143{
144 return s->chr_write(s, buf, len);
145}
146
147int qemu_chr_fe_ioctl(CharDriverState *s, int cmd, void *arg)
148{
149 if (!s->chr_ioctl)
150 return -ENOTSUP;
151 return s->chr_ioctl(s, cmd, arg);
152}
153
154int qemu_chr_be_can_write(CharDriverState *s)
155{
156 if (!s->chr_can_read)
157 return 0;
158 return s->chr_can_read(s->handler_opaque);
159}
160
161void qemu_chr_be_write(CharDriverState *s, uint8_t *buf, int len)
162{
163 if (s->chr_read) {
164 s->chr_read(s->handler_opaque, buf, len);
165 }
166}
167
168int qemu_chr_fe_get_msgfd(CharDriverState *s)
169{
170 return s->get_msgfd ? s->get_msgfd(s) : -1;
171}
172
173int qemu_chr_add_client(CharDriverState *s, int fd)
174{
175 return s->chr_add_client ? s->chr_add_client(s, fd) : -1;
176}
177
178void qemu_chr_accept_input(CharDriverState *s)
179{
180 if (s->chr_accept_input)
181 s->chr_accept_input(s);
182 qemu_notify_event();
183}
184
185void qemu_chr_fe_printf(CharDriverState *s, const char *fmt, ...)
186{
187 char buf[READ_BUF_LEN];
188 va_list ap;
189 va_start(ap, fmt);
190 vsnprintf(buf, sizeof(buf), fmt, ap);
191 qemu_chr_fe_write(s, (uint8_t *)buf, strlen(buf));
192 va_end(ap);
193}
194
195void qemu_chr_add_handlers(CharDriverState *s,
196 IOCanReadHandler *fd_can_read,
197 IOReadHandler *fd_read,
198 IOEventHandler *fd_event,
199 void *opaque)
200{
201 if (!opaque && !fd_can_read && !fd_read && !fd_event) {
202 /* chr driver being released. */
203 ++s->avail_connections;
204 }
205 s->chr_can_read = fd_can_read;
206 s->chr_read = fd_read;
207 s->chr_event = fd_event;
208 s->handler_opaque = opaque;
209 if (s->chr_update_read_handler)
210 s->chr_update_read_handler(s);
211
212 /* We're connecting to an already opened device, so let's make sure we
213 also get the open event */
214 if (s->opened) {
215 qemu_chr_generic_open(s);
216 }
217}
218
219static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
220{
221 return len;
222}
223
224static CharDriverState *qemu_chr_open_null(QemuOpts *opts)
225{
226 CharDriverState *chr;
227
228 chr = g_malloc0(sizeof(CharDriverState));
229 chr->chr_write = null_chr_write;
230 return chr;
231}
232
233/* MUX driver for serial I/O splitting */
234#define MAX_MUX 4
235#define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */
236#define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1)
237typedef struct {
238 IOCanReadHandler *chr_can_read[MAX_MUX];
239 IOReadHandler *chr_read[MAX_MUX];
240 IOEventHandler *chr_event[MAX_MUX];
241 void *ext_opaque[MAX_MUX];
242 CharDriverState *drv;
243 int focus;
244 int mux_cnt;
245 int term_got_escape;
246 int max_size;
247 /* Intermediate input buffer allows to catch escape sequences even if the
248 currently active device is not accepting any input - but only until it
249 is full as well. */
250 unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE];
251 int prod[MAX_MUX];
252 int cons[MAX_MUX];
253 int timestamps;
254 int linestart;
255 int64_t timestamps_start;
256} MuxDriver;
257
258
259static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
260{
261 MuxDriver *d = chr->opaque;
262 int ret;
263 if (!d->timestamps) {
264 ret = d->drv->chr_write(d->drv, buf, len);
265 } else {
266 int i;
267
268 ret = 0;
269 for (i = 0; i < len; i++) {
270 if (d->linestart) {
271 char buf1[64];
272 int64_t ti;
273 int secs;
274
275 ti = qemu_get_clock_ms(rt_clock);
276 if (d->timestamps_start == -1)
277 d->timestamps_start = ti;
278 ti -= d->timestamps_start;
279 secs = ti / 1000;
280 snprintf(buf1, sizeof(buf1),
281 "[%02d:%02d:%02d.%03d] ",
282 secs / 3600,
283 (secs / 60) % 60,
284 secs % 60,
285 (int)(ti % 1000));
286 d->drv->chr_write(d->drv, (uint8_t *)buf1, strlen(buf1));
287 d->linestart = 0;
288 }
289 ret += d->drv->chr_write(d->drv, buf+i, 1);
290 if (buf[i] == '\n') {
291 d->linestart = 1;
292 }
293 }
294 }
295 return ret;
296}
297
298static const char * const mux_help[] = {
299 "% h print this help\n\r",
300 "% x exit emulator\n\r",
301 "% s save disk data back to file (if -snapshot)\n\r",
302 "% t toggle console timestamps\n\r"
303 "% b send break (magic sysrq)\n\r",
304 "% c switch between console and monitor\n\r",
305 "% % sends %\n\r",
306 NULL
307};
308
309int term_escape_char = 0x01; /* ctrl-a is used for escape */
310static void mux_print_help(CharDriverState *chr)
311{
312 int i, j;
313 char ebuf[15] = "Escape-Char";
314 char cbuf[50] = "\n\r";
315
316 if (term_escape_char > 0 && term_escape_char < 26) {
317 snprintf(cbuf, sizeof(cbuf), "\n\r");
318 snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a');
319 } else {
320 snprintf(cbuf, sizeof(cbuf),
321 "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
322 term_escape_char);
323 }
324 chr->chr_write(chr, (uint8_t *)cbuf, strlen(cbuf));
325 for (i = 0; mux_help[i] != NULL; i++) {
326 for (j=0; mux_help[i][j] != '\0'; j++) {
327 if (mux_help[i][j] == '%')
328 chr->chr_write(chr, (uint8_t *)ebuf, strlen(ebuf));
329 else
330 chr->chr_write(chr, (uint8_t *)&mux_help[i][j], 1);
331 }
332 }
333}
334
335static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event)
336{
337 if (d->chr_event[mux_nr])
338 d->chr_event[mux_nr](d->ext_opaque[mux_nr], event);
339}
340
341static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch)
342{
343 if (d->term_got_escape) {
344 d->term_got_escape = 0;
345 if (ch == term_escape_char)
346 goto send_char;
347 switch(ch) {
348 case '?':
349 case 'h':
350 mux_print_help(chr);
351 break;
352 case 'x':
353 {
354 const char *term = "QEMU: Terminated\n\r";
355 chr->chr_write(chr,(uint8_t *)term,strlen(term));
356 exit(0);
357 break;
358 }
359 case 's':
360 bdrv_commit_all();
361 break;
362 case 'b':
363 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
364 break;
365 case 'c':
366 /* Switch to the next registered device */
367 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
368 d->focus++;
369 if (d->focus >= d->mux_cnt)
370 d->focus = 0;
371 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
372 break;
373 case 't':
374 d->timestamps = !d->timestamps;
375 d->timestamps_start = -1;
376 d->linestart = 0;
377 break;
378 }
379 } else if (ch == term_escape_char) {
380 d->term_got_escape = 1;
381 } else {
382 send_char:
383 return 1;
384 }
385 return 0;
386}
387
388static void mux_chr_accept_input(CharDriverState *chr)
389{
390 MuxDriver *d = chr->opaque;
391 int m = d->focus;
392
393 while (d->prod[m] != d->cons[m] &&
394 d->chr_can_read[m] &&
395 d->chr_can_read[m](d->ext_opaque[m])) {
396 d->chr_read[m](d->ext_opaque[m],
397 &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
398 }
399}
400
401static int mux_chr_can_read(void *opaque)
402{
403 CharDriverState *chr = opaque;
404 MuxDriver *d = chr->opaque;
405 int m = d->focus;
406
407 if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
408 return 1;
409 if (d->chr_can_read[m])
410 return d->chr_can_read[m](d->ext_opaque[m]);
411 return 0;
412}
413
414static void mux_chr_read(void *opaque, const uint8_t *buf, int size)
415{
416 CharDriverState *chr = opaque;
417 MuxDriver *d = chr->opaque;
418 int m = d->focus;
419 int i;
420
421 mux_chr_accept_input (opaque);
422
423 for(i = 0; i < size; i++)
424 if (mux_proc_byte(chr, d, buf[i])) {
425 if (d->prod[m] == d->cons[m] &&
426 d->chr_can_read[m] &&
427 d->chr_can_read[m](d->ext_opaque[m]))
428 d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
429 else
430 d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i];
431 }
432}
433
434static void mux_chr_event(void *opaque, int event)
435{
436 CharDriverState *chr = opaque;
437 MuxDriver *d = chr->opaque;
438 int i;
439
440 /* Send the event to all registered listeners */
441 for (i = 0; i < d->mux_cnt; i++)
442 mux_chr_send_event(d, i, event);
443}
444
445static void mux_chr_update_read_handler(CharDriverState *chr)
446{
447 MuxDriver *d = chr->opaque;
448
449 if (d->mux_cnt >= MAX_MUX) {
450 fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
451 return;
452 }
453 d->ext_opaque[d->mux_cnt] = chr->handler_opaque;
454 d->chr_can_read[d->mux_cnt] = chr->chr_can_read;
455 d->chr_read[d->mux_cnt] = chr->chr_read;
456 d->chr_event[d->mux_cnt] = chr->chr_event;
457 /* Fix up the real driver with mux routines */
458 if (d->mux_cnt == 0) {
459 qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read,
460 mux_chr_event, chr);
461 }
462 if (d->focus != -1) {
463 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT);
464 }
465 d->focus = d->mux_cnt;
466 d->mux_cnt++;
467 mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN);
468}
469
470static CharDriverState *qemu_chr_open_mux(CharDriverState *drv)
471{
472 CharDriverState *chr;
473 MuxDriver *d;
474
475 chr = g_malloc0(sizeof(CharDriverState));
476 d = g_malloc0(sizeof(MuxDriver));
477
478 chr->opaque = d;
479 d->drv = drv;
480 d->focus = -1;
481 chr->chr_write = mux_chr_write;
482 chr->chr_update_read_handler = mux_chr_update_read_handler;
483 chr->chr_accept_input = mux_chr_accept_input;
484 /* Frontend guest-open / -close notification is not support with muxes */
485 chr->chr_guest_open = NULL;
486 chr->chr_guest_close = NULL;
487
488 /* Muxes are always open on creation */
489 qemu_chr_generic_open(chr);
490
491 return chr;
492}
493
494
495#ifdef _WIN32
496int send_all(int fd, const void *buf, int len1)
497{
498 int ret, len;
499
500 len = len1;
501 while (len > 0) {
502 ret = send(fd, buf, len, 0);
503 if (ret < 0) {
504 errno = WSAGetLastError();
505 if (errno != WSAEWOULDBLOCK) {
506 return -1;
507 }
508 } else if (ret == 0) {
509 break;
510 } else {
511 buf += ret;
512 len -= ret;
513 }
514 }
515 return len1 - len;
516}
517
518#else
519
520int send_all(int fd, const void *_buf, int len1)
521{
522 int ret, len;
523 const uint8_t *buf = _buf;
524
525 len = len1;
526 while (len > 0) {
527 ret = write(fd, buf, len);
528 if (ret < 0) {
529 if (errno != EINTR && errno != EAGAIN)
530 return -1;
531 } else if (ret == 0) {
532 break;
533 } else {
534 buf += ret;
535 len -= ret;
536 }
537 }
538 return len1 - len;
539}
540#endif /* !_WIN32 */
541
542#ifndef _WIN32
543
544typedef struct IOWatchPoll
545{
546 GSource *src;
547 int max_size;
548
549 IOCanReadHandler *fd_can_read;
550 void *opaque;
551
552 QTAILQ_ENTRY(IOWatchPoll) node;
553} IOWatchPoll;
554
555static QTAILQ_HEAD(, IOWatchPoll) io_watch_poll_list =
556 QTAILQ_HEAD_INITIALIZER(io_watch_poll_list);
557
558static IOWatchPoll *io_watch_poll_from_source(GSource *source)
559{
560 IOWatchPoll *i;
561
562 QTAILQ_FOREACH(i, &io_watch_poll_list, node) {
563 if (i->src == source) {
564 return i;
565 }
566 }
567
568 return NULL;
569}
570
571static gboolean io_watch_poll_prepare(GSource *source, gint *timeout_)
572{
573 IOWatchPoll *iwp = io_watch_poll_from_source(source);
574
575 iwp->max_size = iwp->fd_can_read(iwp->opaque);
576 if (iwp->max_size == 0) {
577 return FALSE;
578 }
579
580 return g_io_watch_funcs.prepare(source, timeout_);
581}
582
583static gboolean io_watch_poll_check(GSource *source)
584{
585 IOWatchPoll *iwp = io_watch_poll_from_source(source);
586
587 if (iwp->max_size == 0) {
588 return FALSE;
589 }
590
591 return g_io_watch_funcs.check(source);
592}
593
594static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
595 gpointer user_data)
596{
597 return g_io_watch_funcs.dispatch(source, callback, user_data);
598}
599
600static void io_watch_poll_finalize(GSource *source)
601{
602 IOWatchPoll *iwp = io_watch_poll_from_source(source);
603 QTAILQ_REMOVE(&io_watch_poll_list, iwp, node);
604 g_io_watch_funcs.finalize(source);
605}
606
607static GSourceFuncs io_watch_poll_funcs = {
608 .prepare = io_watch_poll_prepare,
609 .check = io_watch_poll_check,
610 .dispatch = io_watch_poll_dispatch,
611 .finalize = io_watch_poll_finalize,
612};
613
614/* Can only be used for read */
615static guint io_add_watch_poll(GIOChannel *channel,
616 IOCanReadHandler *fd_can_read,
617 GIOFunc fd_read,
618 gpointer user_data)
619{
620 IOWatchPoll *iwp;
621 GSource *src;
622 guint tag;
623
624 src = g_io_create_watch(channel, G_IO_IN | G_IO_ERR | G_IO_HUP);
625 g_source_set_funcs(src, &io_watch_poll_funcs);
626 g_source_set_callback(src, (GSourceFunc)fd_read, user_data, NULL);
627 tag = g_source_attach(src, NULL);
628 g_source_unref(src);
629
630 iwp = g_malloc0(sizeof(*iwp));
631 iwp->src = src;
632 iwp->max_size = 0;
633 iwp->fd_can_read = fd_can_read;
634 iwp->opaque = user_data;
635
636 QTAILQ_INSERT_HEAD(&io_watch_poll_list, iwp, node);
637
638 return tag;
639}
640
641static GIOChannel *io_channel_from_fd(int fd)
642{
643 GIOChannel *chan;
644
645 if (fd == -1) {
646 return NULL;
647 }
648
649 chan = g_io_channel_unix_new(fd);
650
651 g_io_channel_set_encoding(chan, NULL, NULL);
652 g_io_channel_set_buffered(chan, FALSE);
653
654 return chan;
655}
656
657static GIOChannel *io_channel_from_socket(int fd)
658{
659 GIOChannel *chan;
660
661 if (fd == -1) {
662 return NULL;
663 }
664
665#ifdef _WIN32
666 chan = g_io_channel_win32_new_socket(fd);
667#else
668 chan = g_io_channel_unix_new(fd);
669#endif
670
671 g_io_channel_set_encoding(chan, NULL, NULL);
672 g_io_channel_set_buffered(chan, FALSE);
673
674 return chan;
675}
676
677static int io_channel_send_all(GIOChannel *fd, const void *_buf, int len1)
678{
679 GIOStatus status;
680 gsize bytes_written;
681 int len;
682 const uint8_t *buf = _buf;
683
684 len = len1;
685 while (len > 0) {
686 status = g_io_channel_write_chars(fd, (const gchar *)buf, len,
687 &bytes_written, NULL);
688 if (status != G_IO_STATUS_NORMAL) {
689 if (status == G_IO_STATUS_AGAIN) {
690 errno = EAGAIN;
691 return -1;
692 } else {
693 errno = EINVAL;
694 return -1;
695 }
696 } else if (status == G_IO_STATUS_EOF) {
697 break;
698 } else {
699 buf += bytes_written;
700 len -= bytes_written;
701 }
702 }
703 return len1 - len;
704}
705
706typedef struct FDCharDriver {
707 CharDriverState *chr;
708 GIOChannel *fd_in, *fd_out;
709 guint fd_in_tag;
710 int max_size;
711 QTAILQ_ENTRY(FDCharDriver) node;
712} FDCharDriver;
713
714static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
715{
716 FDCharDriver *s = chr->opaque;
717
718 return io_channel_send_all(s->fd_out, buf, len);
719}
720
721static gboolean fd_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
722{
723 CharDriverState *chr = opaque;
724 FDCharDriver *s = chr->opaque;
725 int len;
726 uint8_t buf[READ_BUF_LEN];
727 GIOStatus status;
728 gsize bytes_read;
729
730 len = sizeof(buf);
731 if (len > s->max_size) {
732 len = s->max_size;
733 }
734 if (len == 0) {
735 return FALSE;
736 }
737
738 status = g_io_channel_read_chars(chan, (gchar *)buf,
739 len, &bytes_read, NULL);
740 if (status == G_IO_STATUS_EOF) {
741 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
742 return FALSE;
743 }
744 if (status == G_IO_STATUS_NORMAL) {
745 qemu_chr_be_write(chr, buf, bytes_read);
746 }
747
748 return TRUE;
749}
750
751static int fd_chr_read_poll(void *opaque)
752{
753 CharDriverState *chr = opaque;
754 FDCharDriver *s = chr->opaque;
755
756 s->max_size = qemu_chr_be_can_write(chr);
757 return s->max_size;
758}
759
760static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
761{
762 FDCharDriver *s = chr->opaque;
763 return g_io_create_watch(s->fd_out, cond);
764}
765
766static void fd_chr_update_read_handler(CharDriverState *chr)
767{
768 FDCharDriver *s = chr->opaque;
769
770 if (s->fd_in_tag) {
771 g_source_remove(s->fd_in_tag);
772 }
773
774 if (s->fd_in) {
775 s->fd_in_tag = io_add_watch_poll(s->fd_in, fd_chr_read_poll, fd_chr_read, chr);
776 }
777}
778
779static void fd_chr_close(struct CharDriverState *chr)
780{
781 FDCharDriver *s = chr->opaque;
782
783 if (s->fd_in_tag) {
784 g_source_remove(s->fd_in_tag);
785 s->fd_in_tag = 0;
786 }
787
788 if (s->fd_in) {
789 g_io_channel_unref(s->fd_in);
790 }
791 if (s->fd_out) {
792 g_io_channel_unref(s->fd_out);
793 }
794
795 g_free(s);
796 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
797}
798
799/* open a character device to a unix fd */
800static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out)
801{
802 CharDriverState *chr;
803 FDCharDriver *s;
804
805 chr = g_malloc0(sizeof(CharDriverState));
806 s = g_malloc0(sizeof(FDCharDriver));
807 s->fd_in = io_channel_from_fd(fd_in);
808 s->fd_out = io_channel_from_fd(fd_out);
809 fcntl(fd_out, F_SETFL, O_NONBLOCK);
810 s->chr = chr;
811 chr->opaque = s;
812 chr->chr_add_watch = fd_chr_add_watch;
813 chr->chr_write = fd_chr_write;
814 chr->chr_update_read_handler = fd_chr_update_read_handler;
815 chr->chr_close = fd_chr_close;
816
817 qemu_chr_generic_open(chr);
818
819 return chr;
820}
821
822static CharDriverState *qemu_chr_open_file_out(QemuOpts *opts)
823{
824 int fd_out;
825
826 TFR(fd_out = qemu_open(qemu_opt_get(opts, "path"),
827 O_WRONLY | O_TRUNC | O_CREAT | O_BINARY, 0666));
828 if (fd_out < 0) {
829 return NULL;
830 }
831 return qemu_chr_open_fd(-1, fd_out);
832}
833
834static CharDriverState *qemu_chr_open_pipe(QemuOpts *opts)
835{
836 int fd_in, fd_out;
837 char filename_in[256], filename_out[256];
838 const char *filename = qemu_opt_get(opts, "path");
839
840 if (filename == NULL) {
841 fprintf(stderr, "chardev: pipe: no filename given\n");
842 return NULL;
843 }
844
845 snprintf(filename_in, 256, "%s.in", filename);
846 snprintf(filename_out, 256, "%s.out", filename);
847 TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY));
848 TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY));
849 if (fd_in < 0 || fd_out < 0) {
850 if (fd_in >= 0)
851 close(fd_in);
852 if (fd_out >= 0)
853 close(fd_out);
854 TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY));
855 if (fd_in < 0) {
856 return NULL;
857 }
858 }
859 return qemu_chr_open_fd(fd_in, fd_out);
860}
861
862/* init terminal so that we can grab keys */
863static struct termios oldtty;
864static int old_fd0_flags;
865static bool stdio_allow_signal;
866
867static void term_exit(void)
868{
869 tcsetattr (0, TCSANOW, &oldtty);
870 fcntl(0, F_SETFL, old_fd0_flags);
871}
872
873static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo)
874{
875 struct termios tty;
876
877 tty = oldtty;
878 if (!echo) {
879 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
880 |INLCR|IGNCR|ICRNL|IXON);
881 tty.c_oflag |= OPOST;
882 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN);
883 tty.c_cflag &= ~(CSIZE|PARENB);
884 tty.c_cflag |= CS8;
885 tty.c_cc[VMIN] = 1;
886 tty.c_cc[VTIME] = 0;
887 }
888 /* if graphical mode, we allow Ctrl-C handling */
889 if (!stdio_allow_signal)
890 tty.c_lflag &= ~ISIG;
891
892 tcsetattr (0, TCSANOW, &tty);
893}
894
895static void qemu_chr_close_stdio(struct CharDriverState *chr)
896{
897 term_exit();
898 fd_chr_close(chr);
899}
900
901static CharDriverState *qemu_chr_open_stdio(QemuOpts *opts)
902{
903 CharDriverState *chr;
904
905 if (is_daemonized()) {
906 error_report("cannot use stdio with -daemonize");
907 return NULL;
908 }
909 old_fd0_flags = fcntl(0, F_GETFL);
910 tcgetattr (0, &oldtty);
911 fcntl(0, F_SETFL, O_NONBLOCK);
912 atexit(term_exit);
913
914 chr = qemu_chr_open_fd(0, 1);
915 chr->chr_close = qemu_chr_close_stdio;
916 chr->chr_set_echo = qemu_chr_set_echo_stdio;
917 stdio_allow_signal = qemu_opt_get_bool(opts, "signal",
918 display_type != DT_NOGRAPHIC);
919 qemu_chr_fe_set_echo(chr, false);
920
921 return chr;
922}
923
924#ifdef __sun__
925/* Once Solaris has openpty(), this is going to be removed. */
926static int openpty(int *amaster, int *aslave, char *name,
927 struct termios *termp, struct winsize *winp)
928{
929 const char *slave;
930 int mfd = -1, sfd = -1;
931
932 *amaster = *aslave = -1;
933
934 mfd = open("/dev/ptmx", O_RDWR | O_NOCTTY);
935 if (mfd < 0)
936 goto err;
937
938 if (grantpt(mfd) == -1 || unlockpt(mfd) == -1)
939 goto err;
940
941 if ((slave = ptsname(mfd)) == NULL)
942 goto err;
943
944 if ((sfd = open(slave, O_RDONLY | O_NOCTTY)) == -1)
945 goto err;
946
947 if (ioctl(sfd, I_PUSH, "ptem") == -1 ||
948 (termp != NULL && tcgetattr(sfd, termp) < 0))
949 goto err;
950
951 if (amaster)
952 *amaster = mfd;
953 if (aslave)
954 *aslave = sfd;
955 if (winp)
956 ioctl(sfd, TIOCSWINSZ, winp);
957
958 return 0;
959
960err:
961 if (sfd != -1)
962 close(sfd);
963 close(mfd);
964 return -1;
965}
966
967static void cfmakeraw (struct termios *termios_p)
968{
969 termios_p->c_iflag &=
970 ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON);
971 termios_p->c_oflag &= ~OPOST;
972 termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN);
973 termios_p->c_cflag &= ~(CSIZE|PARENB);
974 termios_p->c_cflag |= CS8;
975
976 termios_p->c_cc[VMIN] = 0;
977 termios_p->c_cc[VTIME] = 0;
978}
979#endif
980
981#if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
982 || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \
983 || defined(__GLIBC__)
984
985#define HAVE_CHARDEV_TTY 1
986
987typedef struct {
988 GIOChannel *fd;
989 guint fd_tag;
990 int connected;
991 int polling;
992 int read_bytes;
993 QEMUTimer *timer;
994} PtyCharDriver;
995
996static void pty_chr_update_read_handler(CharDriverState *chr);
997static void pty_chr_state(CharDriverState *chr, int connected);
998
999static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
1000{
1001 PtyCharDriver *s = chr->opaque;
1002
1003 if (!s->connected) {
1004 /* guest sends data, check for (re-)connect */
1005 pty_chr_update_read_handler(chr);
1006 return 0;
1007 }
1008 return io_channel_send_all(s->fd, buf, len);
1009}
1010
1011static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
1012{
1013 PtyCharDriver *s = chr->opaque;
1014 return g_io_create_watch(s->fd, cond);
1015}
1016
1017static int pty_chr_read_poll(void *opaque)
1018{
1019 CharDriverState *chr = opaque;
1020 PtyCharDriver *s = chr->opaque;
1021
1022 s->read_bytes = qemu_chr_be_can_write(chr);
1023 return s->read_bytes;
1024}
1025
1026static gboolean pty_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
1027{
1028 CharDriverState *chr = opaque;
1029 PtyCharDriver *s = chr->opaque;
1030 gsize size, len;
1031 uint8_t buf[READ_BUF_LEN];
1032 GIOStatus status;
1033
1034 len = sizeof(buf);
1035 if (len > s->read_bytes)
1036 len = s->read_bytes;
1037 if (len == 0)
1038 return FALSE;
1039 status = g_io_channel_read_chars(s->fd, (gchar *)buf, len, &size, NULL);
1040 if (status != G_IO_STATUS_NORMAL) {
1041 pty_chr_state(chr, 0);
1042 return FALSE;
1043 } else {
1044 pty_chr_state(chr, 1);
1045 qemu_chr_be_write(chr, buf, size);
1046 }
1047 return TRUE;
1048}
1049
1050static void pty_chr_update_read_handler(CharDriverState *chr)
1051{
1052 PtyCharDriver *s = chr->opaque;
1053
1054 if (s->fd_tag) {
1055 g_source_remove(s->fd_tag);
1056 }
1057
1058 s->fd_tag = io_add_watch_poll(s->fd, pty_chr_read_poll, pty_chr_read, chr);
1059 s->polling = 1;
1060 /*
1061 * Short timeout here: just need wait long enougth that qemu makes
1062 * it through the poll loop once. When reconnected we want a
1063 * short timeout so we notice it almost instantly. Otherwise
1064 * read() gives us -EIO instantly, making pty_chr_state() reset the
1065 * timeout to the normal (much longer) poll interval before the
1066 * timer triggers.
1067 */
1068 qemu_mod_timer(s->timer, qemu_get_clock_ms(rt_clock) + 10);
1069}
1070
1071static void pty_chr_state(CharDriverState *chr, int connected)
1072{
1073 PtyCharDriver *s = chr->opaque;
1074
1075 if (!connected) {
1076 g_source_remove(s->fd_tag);
1077 s->fd_tag = 0;
1078 s->connected = 0;
1079 s->polling = 0;
1080 /* (re-)connect poll interval for idle guests: once per second.
1081 * We check more frequently in case the guests sends data to
1082 * the virtual device linked to our pty. */
1083 qemu_mod_timer(s->timer, qemu_get_clock_ms(rt_clock) + 1000);
1084 } else {
1085 if (!s->connected)
1086 qemu_chr_generic_open(chr);
1087 s->connected = 1;
1088 }
1089}
1090
1091static void pty_chr_timer(void *opaque)
1092{
1093 struct CharDriverState *chr = opaque;
1094 PtyCharDriver *s = chr->opaque;
1095
1096 if (s->connected)
1097 return;
1098 if (s->polling) {
1099 /* If we arrive here without polling being cleared due
1100 * read returning -EIO, then we are (re-)connected */
1101 pty_chr_state(chr, 1);
1102 return;
1103 }
1104
1105 /* Next poll ... */
1106 pty_chr_update_read_handler(chr);
1107}
1108
1109static void pty_chr_close(struct CharDriverState *chr)
1110{
1111 PtyCharDriver *s = chr->opaque;
1112 int fd;
1113
1114 if (s->fd_tag) {
1115 g_source_remove(s->fd_tag);
1116 }
1117 fd = g_io_channel_unix_get_fd(s->fd);
1118 g_io_channel_unref(s->fd);
1119 close(fd);
1120 qemu_del_timer(s->timer);
1121 qemu_free_timer(s->timer);
1122 g_free(s);
1123 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1124}
1125
1126static CharDriverState *qemu_chr_open_pty(QemuOpts *opts)
1127{
1128 CharDriverState *chr;
1129 PtyCharDriver *s;
1130 struct termios tty;
1131 const char *label;
1132 int master_fd, slave_fd, len;
1133#if defined(__OpenBSD__) || defined(__DragonFly__)
1134 char pty_name[PATH_MAX];
1135#define q_ptsname(x) pty_name
1136#else
1137 char *pty_name = NULL;
1138#define q_ptsname(x) ptsname(x)
1139#endif
1140
1141 if (openpty(&master_fd, &slave_fd, pty_name, NULL, NULL) < 0) {
1142 return NULL;
1143 }
1144
1145 /* Set raw attributes on the pty. */
1146 tcgetattr(slave_fd, &tty);
1147 cfmakeraw(&tty);
1148 tcsetattr(slave_fd, TCSAFLUSH, &tty);
1149 close(slave_fd);
1150
1151 chr = g_malloc0(sizeof(CharDriverState));
1152
1153 len = strlen(q_ptsname(master_fd)) + 5;
1154 chr->filename = g_malloc(len);
1155 snprintf(chr->filename, len, "pty:%s", q_ptsname(master_fd));
1156 qemu_opt_set(opts, "path", q_ptsname(master_fd));
1157
1158 label = qemu_opts_id(opts);
1159 fprintf(stderr, "char device redirected to %s%s%s%s\n",
1160 q_ptsname(master_fd),
1161 label ? " (label " : "",
1162 label ? label : "",
1163 label ? ")" : "");
1164
1165 s = g_malloc0(sizeof(PtyCharDriver));
1166 chr->opaque = s;
1167 chr->chr_write = pty_chr_write;
1168 chr->chr_update_read_handler = pty_chr_update_read_handler;
1169 chr->chr_close = pty_chr_close;
1170 chr->chr_add_watch = pty_chr_add_watch;
1171
1172 s->fd = io_channel_from_fd(master_fd);
1173 s->timer = qemu_new_timer_ms(rt_clock, pty_chr_timer, chr);
1174
1175 return chr;
1176}
1177
1178static void tty_serial_init(int fd, int speed,
1179 int parity, int data_bits, int stop_bits)
1180{
1181 struct termios tty;
1182 speed_t spd;
1183
1184#if 0
1185 printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
1186 speed, parity, data_bits, stop_bits);
1187#endif
1188 tcgetattr (fd, &tty);
1189
1190#define check_speed(val) if (speed <= val) { spd = B##val; break; }
1191 speed = speed * 10 / 11;
1192 do {
1193 check_speed(50);
1194 check_speed(75);
1195 check_speed(110);
1196 check_speed(134);
1197 check_speed(150);
1198 check_speed(200);
1199 check_speed(300);
1200 check_speed(600);
1201 check_speed(1200);
1202 check_speed(1800);
1203 check_speed(2400);
1204 check_speed(4800);
1205 check_speed(9600);
1206 check_speed(19200);
1207 check_speed(38400);
1208 /* Non-Posix values follow. They may be unsupported on some systems. */
1209 check_speed(57600);
1210 check_speed(115200);
1211#ifdef B230400
1212 check_speed(230400);
1213#endif
1214#ifdef B460800
1215 check_speed(460800);
1216#endif
1217#ifdef B500000
1218 check_speed(500000);
1219#endif
1220#ifdef B576000
1221 check_speed(576000);
1222#endif
1223#ifdef B921600
1224 check_speed(921600);
1225#endif
1226#ifdef B1000000
1227 check_speed(1000000);
1228#endif
1229#ifdef B1152000
1230 check_speed(1152000);
1231#endif
1232#ifdef B1500000
1233 check_speed(1500000);
1234#endif
1235#ifdef B2000000
1236 check_speed(2000000);
1237#endif
1238#ifdef B2500000
1239 check_speed(2500000);
1240#endif
1241#ifdef B3000000
1242 check_speed(3000000);
1243#endif
1244#ifdef B3500000
1245 check_speed(3500000);
1246#endif
1247#ifdef B4000000
1248 check_speed(4000000);
1249#endif
1250 spd = B115200;
1251 } while (0);
1252
1253 cfsetispeed(&tty, spd);
1254 cfsetospeed(&tty, spd);
1255
1256 tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP
1257 |INLCR|IGNCR|ICRNL|IXON);
1258 tty.c_oflag |= OPOST;
1259 tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG);
1260 tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB);
1261 switch(data_bits) {
1262 default:
1263 case 8:
1264 tty.c_cflag |= CS8;
1265 break;
1266 case 7:
1267 tty.c_cflag |= CS7;
1268 break;
1269 case 6:
1270 tty.c_cflag |= CS6;
1271 break;
1272 case 5:
1273 tty.c_cflag |= CS5;
1274 break;
1275 }
1276 switch(parity) {
1277 default:
1278 case 'N':
1279 break;
1280 case 'E':
1281 tty.c_cflag |= PARENB;
1282 break;
1283 case 'O':
1284 tty.c_cflag |= PARENB | PARODD;
1285 break;
1286 }
1287 if (stop_bits == 2)
1288 tty.c_cflag |= CSTOPB;
1289
1290 tcsetattr (fd, TCSANOW, &tty);
1291}
1292
1293static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg)
1294{
1295 FDCharDriver *s = chr->opaque;
1296
1297 switch(cmd) {
1298 case CHR_IOCTL_SERIAL_SET_PARAMS:
1299 {
1300 QEMUSerialSetParams *ssp = arg;
1301 tty_serial_init(g_io_channel_unix_get_fd(s->fd_in),
1302 ssp->speed, ssp->parity,
1303 ssp->data_bits, ssp->stop_bits);
1304 }
1305 break;
1306 case CHR_IOCTL_SERIAL_SET_BREAK:
1307 {
1308 int enable = *(int *)arg;
1309 if (enable) {
1310 tcsendbreak(g_io_channel_unix_get_fd(s->fd_in), 1);
1311 }
1312 }
1313 break;
1314 case CHR_IOCTL_SERIAL_GET_TIOCM:
1315 {
1316 int sarg = 0;
1317 int *targ = (int *)arg;
1318 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &sarg);
1319 *targ = 0;
1320 if (sarg & TIOCM_CTS)
1321 *targ |= CHR_TIOCM_CTS;
1322 if (sarg & TIOCM_CAR)
1323 *targ |= CHR_TIOCM_CAR;
1324 if (sarg & TIOCM_DSR)
1325 *targ |= CHR_TIOCM_DSR;
1326 if (sarg & TIOCM_RI)
1327 *targ |= CHR_TIOCM_RI;
1328 if (sarg & TIOCM_DTR)
1329 *targ |= CHR_TIOCM_DTR;
1330 if (sarg & TIOCM_RTS)
1331 *targ |= CHR_TIOCM_RTS;
1332 }
1333 break;
1334 case CHR_IOCTL_SERIAL_SET_TIOCM:
1335 {
1336 int sarg = *(int *)arg;
1337 int targ = 0;
1338 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &targ);
1339 targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR
1340 | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS);
1341 if (sarg & CHR_TIOCM_CTS)
1342 targ |= TIOCM_CTS;
1343 if (sarg & CHR_TIOCM_CAR)
1344 targ |= TIOCM_CAR;
1345 if (sarg & CHR_TIOCM_DSR)
1346 targ |= TIOCM_DSR;
1347 if (sarg & CHR_TIOCM_RI)
1348 targ |= TIOCM_RI;
1349 if (sarg & CHR_TIOCM_DTR)
1350 targ |= TIOCM_DTR;
1351 if (sarg & CHR_TIOCM_RTS)
1352 targ |= TIOCM_RTS;
1353 ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMSET, &targ);
1354 }
1355 break;
1356 default:
1357 return -ENOTSUP;
1358 }
1359 return 0;
1360}
1361
1362static void qemu_chr_close_tty(CharDriverState *chr)
1363{
1364 FDCharDriver *s = chr->opaque;
1365 int fd = -1;
1366
1367 if (s) {
1368 fd = g_io_channel_unix_get_fd(s->fd_in);
1369 }
1370
1371 fd_chr_close(chr);
1372
1373 if (fd >= 0) {
1374 close(fd);
1375 }
1376}
1377
1378static CharDriverState *qemu_chr_open_tty_fd(int fd)
1379{
1380 CharDriverState *chr;
1381
1382 tty_serial_init(fd, 115200, 'N', 8, 1);
1383 chr = qemu_chr_open_fd(fd, fd);
1384 chr->chr_ioctl = tty_serial_ioctl;
1385 chr->chr_close = qemu_chr_close_tty;
1386 return chr;
1387}
1388
1389static CharDriverState *qemu_chr_open_tty(QemuOpts *opts)
1390{
1391 const char *filename = qemu_opt_get(opts, "path");
1392 int fd;
1393
1394 TFR(fd = qemu_open(filename, O_RDWR | O_NONBLOCK));
1395 if (fd < 0) {
1396 return NULL;
1397 }
1398 return qemu_chr_open_tty_fd(fd);
1399}
1400#endif /* __linux__ || __sun__ */
1401
1402#if defined(__linux__)
1403
1404#define HAVE_CHARDEV_PARPORT 1
1405
1406typedef struct {
1407 int fd;
1408 int mode;
1409} ParallelCharDriver;
1410
1411static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode)
1412{
1413 if (s->mode != mode) {
1414 int m = mode;
1415 if (ioctl(s->fd, PPSETMODE, &m) < 0)
1416 return 0;
1417 s->mode = mode;
1418 }
1419 return 1;
1420}
1421
1422static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1423{
1424 ParallelCharDriver *drv = chr->opaque;
1425 int fd = drv->fd;
1426 uint8_t b;
1427
1428 switch(cmd) {
1429 case CHR_IOCTL_PP_READ_DATA:
1430 if (ioctl(fd, PPRDATA, &b) < 0)
1431 return -ENOTSUP;
1432 *(uint8_t *)arg = b;
1433 break;
1434 case CHR_IOCTL_PP_WRITE_DATA:
1435 b = *(uint8_t *)arg;
1436 if (ioctl(fd, PPWDATA, &b) < 0)
1437 return -ENOTSUP;
1438 break;
1439 case CHR_IOCTL_PP_READ_CONTROL:
1440 if (ioctl(fd, PPRCONTROL, &b) < 0)
1441 return -ENOTSUP;
1442 /* Linux gives only the lowest bits, and no way to know data
1443 direction! For better compatibility set the fixed upper
1444 bits. */
1445 *(uint8_t *)arg = b | 0xc0;
1446 break;
1447 case CHR_IOCTL_PP_WRITE_CONTROL:
1448 b = *(uint8_t *)arg;
1449 if (ioctl(fd, PPWCONTROL, &b) < 0)
1450 return -ENOTSUP;
1451 break;
1452 case CHR_IOCTL_PP_READ_STATUS:
1453 if (ioctl(fd, PPRSTATUS, &b) < 0)
1454 return -ENOTSUP;
1455 *(uint8_t *)arg = b;
1456 break;
1457 case CHR_IOCTL_PP_DATA_DIR:
1458 if (ioctl(fd, PPDATADIR, (int *)arg) < 0)
1459 return -ENOTSUP;
1460 break;
1461 case CHR_IOCTL_PP_EPP_READ_ADDR:
1462 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1463 struct ParallelIOArg *parg = arg;
1464 int n = read(fd, parg->buffer, parg->count);
1465 if (n != parg->count) {
1466 return -EIO;
1467 }
1468 }
1469 break;
1470 case CHR_IOCTL_PP_EPP_READ:
1471 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1472 struct ParallelIOArg *parg = arg;
1473 int n = read(fd, parg->buffer, parg->count);
1474 if (n != parg->count) {
1475 return -EIO;
1476 }
1477 }
1478 break;
1479 case CHR_IOCTL_PP_EPP_WRITE_ADDR:
1480 if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
1481 struct ParallelIOArg *parg = arg;
1482 int n = write(fd, parg->buffer, parg->count);
1483 if (n != parg->count) {
1484 return -EIO;
1485 }
1486 }
1487 break;
1488 case CHR_IOCTL_PP_EPP_WRITE:
1489 if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
1490 struct ParallelIOArg *parg = arg;
1491 int n = write(fd, parg->buffer, parg->count);
1492 if (n != parg->count) {
1493 return -EIO;
1494 }
1495 }
1496 break;
1497 default:
1498 return -ENOTSUP;
1499 }
1500 return 0;
1501}
1502
1503static void pp_close(CharDriverState *chr)
1504{
1505 ParallelCharDriver *drv = chr->opaque;
1506 int fd = drv->fd;
1507
1508 pp_hw_mode(drv, IEEE1284_MODE_COMPAT);
1509 ioctl(fd, PPRELEASE);
1510 close(fd);
1511 g_free(drv);
1512 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1513}
1514
1515static CharDriverState *qemu_chr_open_pp_fd(int fd)
1516{
1517 CharDriverState *chr;
1518 ParallelCharDriver *drv;
1519
1520 if (ioctl(fd, PPCLAIM) < 0) {
1521 close(fd);
1522 return NULL;
1523 }
1524
1525 drv = g_malloc0(sizeof(ParallelCharDriver));
1526 drv->fd = fd;
1527 drv->mode = IEEE1284_MODE_COMPAT;
1528
1529 chr = g_malloc0(sizeof(CharDriverState));
1530 chr->chr_write = null_chr_write;
1531 chr->chr_ioctl = pp_ioctl;
1532 chr->chr_close = pp_close;
1533 chr->opaque = drv;
1534
1535 qemu_chr_generic_open(chr);
1536
1537 return chr;
1538}
1539#endif /* __linux__ */
1540
1541#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
1542
1543#define HAVE_CHARDEV_PARPORT 1
1544
1545static int pp_ioctl(CharDriverState *chr, int cmd, void *arg)
1546{
1547 int fd = (int)(intptr_t)chr->opaque;
1548 uint8_t b;
1549
1550 switch(cmd) {
1551 case CHR_IOCTL_PP_READ_DATA:
1552 if (ioctl(fd, PPIGDATA, &b) < 0)
1553 return -ENOTSUP;
1554 *(uint8_t *)arg = b;
1555 break;
1556 case CHR_IOCTL_PP_WRITE_DATA:
1557 b = *(uint8_t *)arg;
1558 if (ioctl(fd, PPISDATA, &b) < 0)
1559 return -ENOTSUP;
1560 break;
1561 case CHR_IOCTL_PP_READ_CONTROL:
1562 if (ioctl(fd, PPIGCTRL, &b) < 0)
1563 return -ENOTSUP;
1564 *(uint8_t *)arg = b;
1565 break;
1566 case CHR_IOCTL_PP_WRITE_CONTROL:
1567 b = *(uint8_t *)arg;
1568 if (ioctl(fd, PPISCTRL, &b) < 0)
1569 return -ENOTSUP;
1570 break;
1571 case CHR_IOCTL_PP_READ_STATUS:
1572 if (ioctl(fd, PPIGSTATUS, &b) < 0)
1573 return -ENOTSUP;
1574 *(uint8_t *)arg = b;
1575 break;
1576 default:
1577 return -ENOTSUP;
1578 }
1579 return 0;
1580}
1581
1582static CharDriverState *qemu_chr_open_pp_fd(int fd)
1583{
1584 CharDriverState *chr;
1585
1586 chr = g_malloc0(sizeof(CharDriverState));
1587 chr->opaque = (void *)(intptr_t)fd;
1588 chr->chr_write = null_chr_write;
1589 chr->chr_ioctl = pp_ioctl;
1590 return chr;
1591}
1592#endif
1593
1594#else /* _WIN32 */
1595
1596typedef struct {
1597 int max_size;
1598 HANDLE hcom, hrecv, hsend;
1599 OVERLAPPED orecv, osend;
1600 BOOL fpipe;
1601 DWORD len;
1602} WinCharState;
1603
1604typedef struct {
1605 HANDLE hStdIn;
1606 HANDLE hInputReadyEvent;
1607 HANDLE hInputDoneEvent;
1608 HANDLE hInputThread;
1609 uint8_t win_stdio_buf;
1610} WinStdioCharState;
1611
1612#define NSENDBUF 2048
1613#define NRECVBUF 2048
1614#define MAXCONNECT 1
1615#define NTIMEOUT 5000
1616
1617static int win_chr_poll(void *opaque);
1618static int win_chr_pipe_poll(void *opaque);
1619
1620static void win_chr_close(CharDriverState *chr)
1621{
1622 WinCharState *s = chr->opaque;
1623
1624 if (s->hsend) {
1625 CloseHandle(s->hsend);
1626 s->hsend = NULL;
1627 }
1628 if (s->hrecv) {
1629 CloseHandle(s->hrecv);
1630 s->hrecv = NULL;
1631 }
1632 if (s->hcom) {
1633 CloseHandle(s->hcom);
1634 s->hcom = NULL;
1635 }
1636 if (s->fpipe)
1637 qemu_del_polling_cb(win_chr_pipe_poll, chr);
1638 else
1639 qemu_del_polling_cb(win_chr_poll, chr);
1640
1641 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
1642}
1643
1644static int win_chr_init(CharDriverState *chr, const char *filename)
1645{
1646 WinCharState *s = chr->opaque;
1647 COMMCONFIG comcfg;
1648 COMMTIMEOUTS cto = { 0, 0, 0, 0, 0};
1649 COMSTAT comstat;
1650 DWORD size;
1651 DWORD err;
1652
1653 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1654 if (!s->hsend) {
1655 fprintf(stderr, "Failed CreateEvent\n");
1656 goto fail;
1657 }
1658 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1659 if (!s->hrecv) {
1660 fprintf(stderr, "Failed CreateEvent\n");
1661 goto fail;
1662 }
1663
1664 s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL,
1665 OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
1666 if (s->hcom == INVALID_HANDLE_VALUE) {
1667 fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
1668 s->hcom = NULL;
1669 goto fail;
1670 }
1671
1672 if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
1673 fprintf(stderr, "Failed SetupComm\n");
1674 goto fail;
1675 }
1676
1677 ZeroMemory(&comcfg, sizeof(COMMCONFIG));
1678 size = sizeof(COMMCONFIG);
1679 GetDefaultCommConfig(filename, &comcfg, &size);
1680 comcfg.dcb.DCBlength = sizeof(DCB);
1681 CommConfigDialog(filename, NULL, &comcfg);
1682
1683 if (!SetCommState(s->hcom, &comcfg.dcb)) {
1684 fprintf(stderr, "Failed SetCommState\n");
1685 goto fail;
1686 }
1687
1688 if (!SetCommMask(s->hcom, EV_ERR)) {
1689 fprintf(stderr, "Failed SetCommMask\n");
1690 goto fail;
1691 }
1692
1693 cto.ReadIntervalTimeout = MAXDWORD;
1694 if (!SetCommTimeouts(s->hcom, &cto)) {
1695 fprintf(stderr, "Failed SetCommTimeouts\n");
1696 goto fail;
1697 }
1698
1699 if (!ClearCommError(s->hcom, &err, &comstat)) {
1700 fprintf(stderr, "Failed ClearCommError\n");
1701 goto fail;
1702 }
1703 qemu_add_polling_cb(win_chr_poll, chr);
1704 return 0;
1705
1706 fail:
1707 win_chr_close(chr);
1708 return -1;
1709}
1710
1711static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1)
1712{
1713 WinCharState *s = chr->opaque;
1714 DWORD len, ret, size, err;
1715
1716 len = len1;
1717 ZeroMemory(&s->osend, sizeof(s->osend));
1718 s->osend.hEvent = s->hsend;
1719 while (len > 0) {
1720 if (s->hsend)
1721 ret = WriteFile(s->hcom, buf, len, &size, &s->osend);
1722 else
1723 ret = WriteFile(s->hcom, buf, len, &size, NULL);
1724 if (!ret) {
1725 err = GetLastError();
1726 if (err == ERROR_IO_PENDING) {
1727 ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE);
1728 if (ret) {
1729 buf += size;
1730 len -= size;
1731 } else {
1732 break;
1733 }
1734 } else {
1735 break;
1736 }
1737 } else {
1738 buf += size;
1739 len -= size;
1740 }
1741 }
1742 return len1 - len;
1743}
1744
1745static int win_chr_read_poll(CharDriverState *chr)
1746{
1747 WinCharState *s = chr->opaque;
1748
1749 s->max_size = qemu_chr_be_can_write(chr);
1750 return s->max_size;
1751}
1752
1753static void win_chr_readfile(CharDriverState *chr)
1754{
1755 WinCharState *s = chr->opaque;
1756 int ret, err;
1757 uint8_t buf[READ_BUF_LEN];
1758 DWORD size;
1759
1760 ZeroMemory(&s->orecv, sizeof(s->orecv));
1761 s->orecv.hEvent = s->hrecv;
1762 ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv);
1763 if (!ret) {
1764 err = GetLastError();
1765 if (err == ERROR_IO_PENDING) {
1766 ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE);
1767 }
1768 }
1769
1770 if (size > 0) {
1771 qemu_chr_be_write(chr, buf, size);
1772 }
1773}
1774
1775static void win_chr_read(CharDriverState *chr)
1776{
1777 WinCharState *s = chr->opaque;
1778
1779 if (s->len > s->max_size)
1780 s->len = s->max_size;
1781 if (s->len == 0)
1782 return;
1783
1784 win_chr_readfile(chr);
1785}
1786
1787static int win_chr_poll(void *opaque)
1788{
1789 CharDriverState *chr = opaque;
1790 WinCharState *s = chr->opaque;
1791 COMSTAT status;
1792 DWORD comerr;
1793
1794 ClearCommError(s->hcom, &comerr, &status);
1795 if (status.cbInQue > 0) {
1796 s->len = status.cbInQue;
1797 win_chr_read_poll(chr);
1798 win_chr_read(chr);
1799 return 1;
1800 }
1801 return 0;
1802}
1803
1804static CharDriverState *qemu_chr_open_win_path(const char *filename)
1805{
1806 CharDriverState *chr;
1807 WinCharState *s;
1808
1809 chr = g_malloc0(sizeof(CharDriverState));
1810 s = g_malloc0(sizeof(WinCharState));
1811 chr->opaque = s;
1812 chr->chr_write = win_chr_write;
1813 chr->chr_close = win_chr_close;
1814
1815 if (win_chr_init(chr, filename) < 0) {
1816 g_free(s);
1817 g_free(chr);
1818 return NULL;
1819 }
1820 qemu_chr_generic_open(chr);
1821 return chr;
1822}
1823
1824static CharDriverState *qemu_chr_open_win(QemuOpts *opts)
1825{
1826 return qemu_chr_open_win_path(qemu_opt_get(opts, "path"));
1827}
1828
1829static int win_chr_pipe_poll(void *opaque)
1830{
1831 CharDriverState *chr = opaque;
1832 WinCharState *s = chr->opaque;
1833 DWORD size;
1834
1835 PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL);
1836 if (size > 0) {
1837 s->len = size;
1838 win_chr_read_poll(chr);
1839 win_chr_read(chr);
1840 return 1;
1841 }
1842 return 0;
1843}
1844
1845static int win_chr_pipe_init(CharDriverState *chr, const char *filename)
1846{
1847 WinCharState *s = chr->opaque;
1848 OVERLAPPED ov;
1849 int ret;
1850 DWORD size;
1851 char openname[256];
1852
1853 s->fpipe = TRUE;
1854
1855 s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL);
1856 if (!s->hsend) {
1857 fprintf(stderr, "Failed CreateEvent\n");
1858 goto fail;
1859 }
1860 s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL);
1861 if (!s->hrecv) {
1862 fprintf(stderr, "Failed CreateEvent\n");
1863 goto fail;
1864 }
1865
1866 snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename);
1867 s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED,
1868 PIPE_TYPE_BYTE | PIPE_READMODE_BYTE |
1869 PIPE_WAIT,
1870 MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
1871 if (s->hcom == INVALID_HANDLE_VALUE) {
1872 fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
1873 s->hcom = NULL;
1874 goto fail;
1875 }
1876
1877 ZeroMemory(&ov, sizeof(ov));
1878 ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
1879 ret = ConnectNamedPipe(s->hcom, &ov);
1880 if (ret) {
1881 fprintf(stderr, "Failed ConnectNamedPipe\n");
1882 goto fail;
1883 }
1884
1885 ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE);
1886 if (!ret) {
1887 fprintf(stderr, "Failed GetOverlappedResult\n");
1888 if (ov.hEvent) {
1889 CloseHandle(ov.hEvent);
1890 ov.hEvent = NULL;
1891 }
1892 goto fail;
1893 }
1894
1895 if (ov.hEvent) {
1896 CloseHandle(ov.hEvent);
1897 ov.hEvent = NULL;
1898 }
1899 qemu_add_polling_cb(win_chr_pipe_poll, chr);
1900 return 0;
1901
1902 fail:
1903 win_chr_close(chr);
1904 return -1;
1905}
1906
1907
1908static CharDriverState *qemu_chr_open_win_pipe(QemuOpts *opts)
1909{
1910 const char *filename = qemu_opt_get(opts, "path");
1911 CharDriverState *chr;
1912 WinCharState *s;
1913
1914 chr = g_malloc0(sizeof(CharDriverState));
1915 s = g_malloc0(sizeof(WinCharState));
1916 chr->opaque = s;
1917 chr->chr_write = win_chr_write;
1918 chr->chr_close = win_chr_close;
1919
1920 if (win_chr_pipe_init(chr, filename) < 0) {
1921 g_free(s);
1922 g_free(chr);
1923 return NULL;
1924 }
1925 qemu_chr_generic_open(chr);
1926 return chr;
1927}
1928
1929static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
1930{
1931 CharDriverState *chr;
1932 WinCharState *s;
1933
1934 chr = g_malloc0(sizeof(CharDriverState));
1935 s = g_malloc0(sizeof(WinCharState));
1936 s->hcom = fd_out;
1937 chr->opaque = s;
1938 chr->chr_write = win_chr_write;
1939 qemu_chr_generic_open(chr);
1940 return chr;
1941}
1942
1943static CharDriverState *qemu_chr_open_win_con(QemuOpts *opts)
1944{
1945 return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
1946}
1947
1948static CharDriverState *qemu_chr_open_win_file_out(QemuOpts *opts)
1949{
1950 const char *file_out = qemu_opt_get(opts, "path");
1951 HANDLE fd_out;
1952
1953 fd_out = CreateFile(file_out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
1954 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
1955 if (fd_out == INVALID_HANDLE_VALUE) {
1956 return NULL;
1957 }
1958
1959 return qemu_chr_open_win_file(fd_out);
1960}
1961
1962static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len)
1963{
1964 HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);
1965 DWORD dwSize;
1966 int len1;
1967
1968 len1 = len;
1969
1970 while (len1 > 0) {
1971 if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) {
1972 break;
1973 }
1974 buf += dwSize;
1975 len1 -= dwSize;
1976 }
1977
1978 return len - len1;
1979}
1980
1981static void win_stdio_wait_func(void *opaque)
1982{
1983 CharDriverState *chr = opaque;
1984 WinStdioCharState *stdio = chr->opaque;
1985 INPUT_RECORD buf[4];
1986 int ret;
1987 DWORD dwSize;
1988 int i;
1989
1990 ret = ReadConsoleInput(stdio->hStdIn, buf, sizeof(buf) / sizeof(*buf),
1991 &dwSize);
1992
1993 if (!ret) {
1994 /* Avoid error storm */
1995 qemu_del_wait_object(stdio->hStdIn, NULL, NULL);
1996 return;
1997 }
1998
1999 for (i = 0; i < dwSize; i++) {
2000 KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent;
2001
2002 if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
2003 int j;
2004 if (kev->uChar.AsciiChar != 0) {
2005 for (j = 0; j < kev->wRepeatCount; j++) {
2006 if (qemu_chr_be_can_write(chr)) {
2007 uint8_t c = kev->uChar.AsciiChar;
2008 qemu_chr_be_write(chr, &c, 1);
2009 }
2010 }
2011 }
2012 }
2013 }
2014}
2015
2016static DWORD WINAPI win_stdio_thread(LPVOID param)
2017{
2018 CharDriverState *chr = param;
2019 WinStdioCharState *stdio = chr->opaque;
2020 int ret;
2021 DWORD dwSize;
2022
2023 while (1) {
2024
2025 /* Wait for one byte */
2026 ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL);
2027
2028 /* Exit in case of error, continue if nothing read */
2029 if (!ret) {
2030 break;
2031 }
2032 if (!dwSize) {
2033 continue;
2034 }
2035
2036 /* Some terminal emulator returns \r\n for Enter, just pass \n */
2037 if (stdio->win_stdio_buf == '\r') {
2038 continue;
2039 }
2040
2041 /* Signal the main thread and wait until the byte was eaten */
2042 if (!SetEvent(stdio->hInputReadyEvent)) {
2043 break;
2044 }
2045 if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
2046 != WAIT_OBJECT_0) {
2047 break;
2048 }
2049 }
2050
2051 qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL);
2052 return 0;
2053}
2054
2055static void win_stdio_thread_wait_func(void *opaque)
2056{
2057 CharDriverState *chr = opaque;
2058 WinStdioCharState *stdio = chr->opaque;
2059
2060 if (qemu_chr_be_can_write(chr)) {
2061 qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
2062 }
2063
2064 SetEvent(stdio->hInputDoneEvent);
2065}
2066
2067static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo)
2068{
2069 WinStdioCharState *stdio = chr->opaque;
2070 DWORD dwMode = 0;
2071
2072 GetConsoleMode(stdio->hStdIn, &dwMode);
2073
2074 if (echo) {
2075 SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT);
2076 } else {
2077 SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT);
2078 }
2079}
2080
2081static void win_stdio_close(CharDriverState *chr)
2082{
2083 WinStdioCharState *stdio = chr->opaque;
2084
2085 if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
2086 CloseHandle(stdio->hInputReadyEvent);
2087 }
2088 if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
2089 CloseHandle(stdio->hInputDoneEvent);
2090 }
2091 if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
2092 TerminateThread(stdio->hInputThread, 0);
2093 }
2094
2095 g_free(chr->opaque);
2096 g_free(chr);
2097}
2098
2099static CharDriverState *qemu_chr_open_win_stdio(QemuOpts *opts)
2100{
2101 CharDriverState *chr;
2102 WinStdioCharState *stdio;
2103 DWORD dwMode;
2104 int is_console = 0;
2105
2106 chr = g_malloc0(sizeof(CharDriverState));
2107 stdio = g_malloc0(sizeof(WinStdioCharState));
2108
2109 stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE);
2110 if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
2111 fprintf(stderr, "cannot open stdio: invalid handle\n");
2112 exit(1);
2113 }
2114
2115 is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
2116
2117 chr->opaque = stdio;
2118 chr->chr_write = win_stdio_write;
2119 chr->chr_close = win_stdio_close;
2120
2121 if (is_console) {
2122 if (qemu_add_wait_object(stdio->hStdIn,
2123 win_stdio_wait_func, chr)) {
2124 fprintf(stderr, "qemu_add_wait_object: failed\n");
2125 }
2126 } else {
2127 DWORD dwId;
2128
2129 stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2130 stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL);
2131 stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread,
2132 chr, 0, &dwId);
2133
2134 if (stdio->hInputThread == INVALID_HANDLE_VALUE
2135 || stdio->hInputReadyEvent == INVALID_HANDLE_VALUE
2136 || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) {
2137 fprintf(stderr, "cannot create stdio thread or event\n");
2138 exit(1);
2139 }
2140 if (qemu_add_wait_object(stdio->hInputReadyEvent,
2141 win_stdio_thread_wait_func, chr)) {
2142 fprintf(stderr, "qemu_add_wait_object: failed\n");
2143 }
2144 }
2145
2146 dwMode |= ENABLE_LINE_INPUT;
2147
2148 if (is_console) {
2149 /* set the terminal in raw mode */
2150 /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
2151 dwMode |= ENABLE_PROCESSED_INPUT;
2152 }
2153
2154 SetConsoleMode(stdio->hStdIn, dwMode);
2155
2156 chr->chr_set_echo = qemu_chr_set_echo_win_stdio;
2157 qemu_chr_fe_set_echo(chr, false);
2158
2159 return chr;
2160}
2161#endif /* !_WIN32 */
2162
2163/***********************************************************/
2164/* UDP Net console */
2165
2166typedef struct {
2167 int fd;
2168 GIOChannel *chan;
2169 guint tag;
2170 uint8_t buf[READ_BUF_LEN];
2171 int bufcnt;
2172 int bufptr;
2173 int max_size;
2174} NetCharDriver;
2175
2176static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2177{
2178 NetCharDriver *s = chr->opaque;
2179 gsize bytes_written;
2180 GIOStatus status;
2181
2182 status = g_io_channel_write_chars(s->chan, (const gchar *)buf, len, &bytes_written, NULL);
2183 if (status == G_IO_STATUS_EOF) {
2184 return 0;
2185 } else if (status != G_IO_STATUS_NORMAL) {
2186 return -1;
2187 }
2188
2189 return bytes_written;
2190}
2191
2192static int udp_chr_read_poll(void *opaque)
2193{
2194 CharDriverState *chr = opaque;
2195 NetCharDriver *s = chr->opaque;
2196
2197 s->max_size = qemu_chr_be_can_write(chr);
2198
2199 /* If there were any stray characters in the queue process them
2200 * first
2201 */
2202 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
2203 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
2204 s->bufptr++;
2205 s->max_size = qemu_chr_be_can_write(chr);
2206 }
2207 return s->max_size;
2208}
2209
2210static gboolean udp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
2211{
2212 CharDriverState *chr = opaque;
2213 NetCharDriver *s = chr->opaque;
2214 gsize bytes_read = 0;
2215 GIOStatus status;
2216
2217 if (s->max_size == 0)
2218 return FALSE;
2219 status = g_io_channel_read_chars(s->chan, (gchar *)s->buf, sizeof(s->buf),
2220 &bytes_read, NULL);
2221 s->bufcnt = bytes_read;
2222 s->bufptr = s->bufcnt;
2223 if (status != G_IO_STATUS_NORMAL) {
2224 return FALSE;
2225 }
2226
2227 s->bufptr = 0;
2228 while (s->max_size > 0 && s->bufptr < s->bufcnt) {
2229 qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
2230 s->bufptr++;
2231 s->max_size = qemu_chr_be_can_write(chr);
2232 }
2233
2234 return TRUE;
2235}
2236
2237static void udp_chr_update_read_handler(CharDriverState *chr)
2238{
2239 NetCharDriver *s = chr->opaque;
2240
2241 if (s->tag) {
2242 g_source_remove(s->tag);
2243 s->tag = 0;
2244 }
2245
2246 if (s->chan) {
2247 s->tag = io_add_watch_poll(s->chan, udp_chr_read_poll, udp_chr_read, chr);
2248 }
2249}
2250
2251static void udp_chr_close(CharDriverState *chr)
2252{
2253 NetCharDriver *s = chr->opaque;
2254 if (s->tag) {
2255 g_source_remove(s->tag);
2256 }
2257 if (s->chan) {
2258 g_io_channel_unref(s->chan);
2259 closesocket(s->fd);
2260 }
2261 g_free(s);
2262 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2263}
2264
2265static CharDriverState *qemu_chr_open_udp(QemuOpts *opts)
2266{
2267 CharDriverState *chr = NULL;
2268 NetCharDriver *s = NULL;
2269 Error *local_err = NULL;
2270 int fd = -1;
2271
2272 chr = g_malloc0(sizeof(CharDriverState));
2273 s = g_malloc0(sizeof(NetCharDriver));
2274
2275 fd = inet_dgram_opts(opts, &local_err);
2276 if (fd < 0) {
2277 goto return_err;
2278 }
2279
2280 s->fd = fd;
2281 s->chan = io_channel_from_socket(s->fd);
2282 s->bufcnt = 0;
2283 s->bufptr = 0;
2284 chr->opaque = s;
2285 chr->chr_write = udp_chr_write;
2286 chr->chr_update_read_handler = udp_chr_update_read_handler;
2287 chr->chr_close = udp_chr_close;
2288 return chr;
2289
2290return_err:
2291 if (local_err) {
2292 qerror_report_err(local_err);
2293 error_free(local_err);
2294 }
2295 g_free(chr);
2296 g_free(s);
2297 if (fd >= 0) {
2298 closesocket(fd);
2299 }
2300 return NULL;
2301}
2302
2303/***********************************************************/
2304/* TCP Net console */
2305
2306typedef struct {
2307
2308 GIOChannel *chan, *listen_chan;
2309 guint tag, listen_tag;
2310 int fd, listen_fd;
2311 int connected;
2312 int max_size;
2313 int do_telnetopt;
2314 int do_nodelay;
2315 int is_unix;
2316 int msgfd;
2317} TCPCharDriver;
2318
2319static gboolean tcp_chr_accept(GIOChannel *chan, GIOCondition cond, void *opaque);
2320
2321static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2322{
2323 TCPCharDriver *s = chr->opaque;
2324 if (s->connected) {
2325 return io_channel_send_all(s->chan, buf, len);
2326 } else {
2327 /* XXX: indicate an error ? */
2328 return len;
2329 }
2330}
2331
2332static int tcp_chr_read_poll(void *opaque)
2333{
2334 CharDriverState *chr = opaque;
2335 TCPCharDriver *s = chr->opaque;
2336 if (!s->connected)
2337 return 0;
2338 s->max_size = qemu_chr_be_can_write(chr);
2339 return s->max_size;
2340}
2341
2342#define IAC 255
2343#define IAC_BREAK 243
2344static void tcp_chr_process_IAC_bytes(CharDriverState *chr,
2345 TCPCharDriver *s,
2346 uint8_t *buf, int *size)
2347{
2348 /* Handle any telnet client's basic IAC options to satisfy char by
2349 * char mode with no echo. All IAC options will be removed from
2350 * the buf and the do_telnetopt variable will be used to track the
2351 * state of the width of the IAC information.
2352 *
2353 * IAC commands come in sets of 3 bytes with the exception of the
2354 * "IAC BREAK" command and the double IAC.
2355 */
2356
2357 int i;
2358 int j = 0;
2359
2360 for (i = 0; i < *size; i++) {
2361 if (s->do_telnetopt > 1) {
2362 if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) {
2363 /* Double IAC means send an IAC */
2364 if (j != i)
2365 buf[j] = buf[i];
2366 j++;
2367 s->do_telnetopt = 1;
2368 } else {
2369 if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) {
2370 /* Handle IAC break commands by sending a serial break */
2371 qemu_chr_be_event(chr, CHR_EVENT_BREAK);
2372 s->do_telnetopt++;
2373 }
2374 s->do_telnetopt++;
2375 }
2376 if (s->do_telnetopt >= 4) {
2377 s->do_telnetopt = 1;
2378 }
2379 } else {
2380 if ((unsigned char)buf[i] == IAC) {
2381 s->do_telnetopt = 2;
2382 } else {
2383 if (j != i)
2384 buf[j] = buf[i];
2385 j++;
2386 }
2387 }
2388 }
2389 *size = j;
2390}
2391
2392static int tcp_get_msgfd(CharDriverState *chr)
2393{
2394 TCPCharDriver *s = chr->opaque;
2395 int fd = s->msgfd;
2396 s->msgfd = -1;
2397 return fd;
2398}
2399
2400#ifndef _WIN32
2401static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg)
2402{
2403 TCPCharDriver *s = chr->opaque;
2404 struct cmsghdr *cmsg;
2405
2406 for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
2407 int fd;
2408
2409 if (cmsg->cmsg_len != CMSG_LEN(sizeof(int)) ||
2410 cmsg->cmsg_level != SOL_SOCKET ||
2411 cmsg->cmsg_type != SCM_RIGHTS)
2412 continue;
2413
2414 fd = *((int *)CMSG_DATA(cmsg));
2415 if (fd < 0)
2416 continue;
2417
2418#ifndef MSG_CMSG_CLOEXEC
2419 qemu_set_cloexec(fd);
2420#endif
2421 if (s->msgfd != -1)
2422 close(s->msgfd);
2423 s->msgfd = fd;
2424 }
2425}
2426
2427static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2428{
2429 TCPCharDriver *s = chr->opaque;
2430 struct msghdr msg = { NULL, };
2431 struct iovec iov[1];
2432 union {
2433 struct cmsghdr cmsg;
2434 char control[CMSG_SPACE(sizeof(int))];
2435 } msg_control;
2436 int flags = 0;
2437 ssize_t ret;
2438
2439 iov[0].iov_base = buf;
2440 iov[0].iov_len = len;
2441
2442 msg.msg_iov = iov;
2443 msg.msg_iovlen = 1;
2444 msg.msg_control = &msg_control;
2445 msg.msg_controllen = sizeof(msg_control);
2446
2447#ifdef MSG_CMSG_CLOEXEC
2448 flags |= MSG_CMSG_CLOEXEC;
2449#endif
2450 ret = recvmsg(s->fd, &msg, flags);
2451 if (ret > 0 && s->is_unix) {
2452 unix_process_msgfd(chr, &msg);
2453 }
2454
2455 return ret;
2456}
2457#else
2458static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len)
2459{
2460 TCPCharDriver *s = chr->opaque;
2461 return qemu_recv(s->fd, buf, len, 0);
2462}
2463#endif
2464
2465static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
2466{
2467 TCPCharDriver *s = chr->opaque;
2468 return g_io_create_watch(s->chan, cond);
2469}
2470
2471static gboolean tcp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque)
2472{
2473 CharDriverState *chr = opaque;
2474 TCPCharDriver *s = chr->opaque;
2475 uint8_t buf[READ_BUF_LEN];
2476 int len, size;
2477
2478 if (!s->connected || s->max_size <= 0) {
2479 return FALSE;
2480 }
2481 len = sizeof(buf);
2482 if (len > s->max_size)
2483 len = s->max_size;
2484 size = tcp_chr_recv(chr, (void *)buf, len);
2485 if (size == 0) {
2486 /* connection closed */
2487 s->connected = 0;
2488 if (s->listen_chan) {
2489 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr);
2490 }
2491 g_source_remove(s->tag);
2492 s->tag = 0;
2493 g_io_channel_unref(s->chan);
2494 s->chan = NULL;
2495 closesocket(s->fd);
2496 s->fd = -1;
2497 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2498 } else if (size > 0) {
2499 if (s->do_telnetopt)
2500 tcp_chr_process_IAC_bytes(chr, s, buf, &size);
2501 if (size > 0)
2502 qemu_chr_be_write(chr, buf, size);
2503 }
2504
2505 return TRUE;
2506}
2507
2508#ifndef _WIN32
2509CharDriverState *qemu_chr_open_eventfd(int eventfd)
2510{
2511 return qemu_chr_open_fd(eventfd, eventfd);
2512}
2513#endif
2514
2515static void tcp_chr_connect(void *opaque)
2516{
2517 CharDriverState *chr = opaque;
2518 TCPCharDriver *s = chr->opaque;
2519
2520 s->connected = 1;
2521 if (s->chan) {
2522 s->tag = io_add_watch_poll(s->chan, tcp_chr_read_poll, tcp_chr_read, chr);
2523 }
2524 qemu_chr_generic_open(chr);
2525}
2526
2527#define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c;
2528static void tcp_chr_telnet_init(int fd)
2529{
2530 char buf[3];
2531 /* Send the telnet negotion to put telnet in binary, no echo, single char mode */
2532 IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */
2533 send(fd, (char *)buf, 3, 0);
2534 IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */
2535 send(fd, (char *)buf, 3, 0);
2536 IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */
2537 send(fd, (char *)buf, 3, 0);
2538 IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */
2539 send(fd, (char *)buf, 3, 0);
2540}
2541
2542static int tcp_chr_add_client(CharDriverState *chr, int fd)
2543{
2544 TCPCharDriver *s = chr->opaque;
2545 if (s->fd != -1)
2546 return -1;
2547
2548 socket_set_nonblock(fd);
2549 if (s->do_nodelay)
2550 socket_set_nodelay(fd);
2551 s->fd = fd;
2552 s->chan = io_channel_from_socket(fd);
2553 g_source_remove(s->listen_tag);
2554 s->listen_tag = 0;
2555 tcp_chr_connect(chr);
2556
2557 return 0;
2558}
2559
2560static gboolean tcp_chr_accept(GIOChannel *channel, GIOCondition cond, void *opaque)
2561{
2562 CharDriverState *chr = opaque;
2563 TCPCharDriver *s = chr->opaque;
2564 struct sockaddr_in saddr;
2565#ifndef _WIN32
2566 struct sockaddr_un uaddr;
2567#endif
2568 struct sockaddr *addr;
2569 socklen_t len;
2570 int fd;
2571
2572 for(;;) {
2573#ifndef _WIN32
2574 if (s->is_unix) {
2575 len = sizeof(uaddr);
2576 addr = (struct sockaddr *)&uaddr;
2577 } else
2578#endif
2579 {
2580 len = sizeof(saddr);
2581 addr = (struct sockaddr *)&saddr;
2582 }
2583 fd = qemu_accept(s->listen_fd, addr, &len);
2584 if (fd < 0 && errno != EINTR) {
2585 return FALSE;
2586 } else if (fd >= 0) {
2587 if (s->do_telnetopt)
2588 tcp_chr_telnet_init(fd);
2589 break;
2590 }
2591 }
2592 if (tcp_chr_add_client(chr, fd) < 0)
2593 close(fd);
2594
2595 return TRUE;
2596}
2597
2598static void tcp_chr_close(CharDriverState *chr)
2599{
2600 TCPCharDriver *s = chr->opaque;
2601 if (s->fd >= 0) {
2602 if (s->tag) {
2603 g_source_remove(s->tag);
2604 }
2605 if (s->chan) {
2606 g_io_channel_unref(s->chan);
2607 }
2608 closesocket(s->fd);
2609 }
2610 if (s->listen_fd >= 0) {
2611 if (s->listen_tag) {
2612 g_source_remove(s->listen_tag);
2613 }
2614 if (s->listen_chan) {
2615 g_io_channel_unref(s->listen_chan);
2616 }
2617 closesocket(s->listen_fd);
2618 }
2619 g_free(s);
2620 qemu_chr_be_event(chr, CHR_EVENT_CLOSED);
2621}
2622
2623static CharDriverState *qemu_chr_open_socket_fd(int fd, bool do_nodelay,
2624 bool is_listen, bool is_telnet,
2625 bool is_waitconnect,
2626 Error **errp)
2627{
2628 CharDriverState *chr = NULL;
2629 TCPCharDriver *s = NULL;
2630 char host[NI_MAXHOST], serv[NI_MAXSERV];
2631 const char *left = "", *right = "";
2632 struct sockaddr_storage ss;
2633 socklen_t ss_len = sizeof(ss);
2634
2635 memset(&ss, 0, ss_len);
2636 if (getsockname(fd, (struct sockaddr *) &ss, &ss_len) != 0) {
2637 error_setg(errp, "getsockname: %s", strerror(errno));
2638 return NULL;
2639 }
2640
2641 chr = g_malloc0(sizeof(CharDriverState));
2642 s = g_malloc0(sizeof(TCPCharDriver));
2643
2644 s->connected = 0;
2645 s->fd = -1;
2646 s->listen_fd = -1;
2647 s->msgfd = -1;
2648
2649 chr->filename = g_malloc(256);
2650 switch (ss.ss_family) {
2651#ifndef _WIN32
2652 case AF_UNIX:
2653 s->is_unix = 1;
2654 snprintf(chr->filename, 256, "unix:%s%s",
2655 ((struct sockaddr_un *)(&ss))->sun_path,
2656 is_listen ? ",server" : "");
2657 break;
2658#endif
2659 case AF_INET6:
2660 left = "[";
2661 right = "]";
2662 /* fall through */
2663 case AF_INET:
2664 s->do_nodelay = do_nodelay;
2665 getnameinfo((struct sockaddr *) &ss, ss_len, host, sizeof(host),
2666 serv, sizeof(serv), NI_NUMERICHOST | NI_NUMERICSERV);
2667 snprintf(chr->filename, 256, "%s:%s:%s%s%s%s",
2668 is_telnet ? "telnet" : "tcp",
2669 left, host, right, serv,
2670 is_listen ? ",server" : "");
2671 break;
2672 }
2673
2674 chr->opaque = s;
2675 chr->chr_write = tcp_chr_write;
2676 chr->chr_close = tcp_chr_close;
2677 chr->get_msgfd = tcp_get_msgfd;
2678 chr->chr_add_client = tcp_chr_add_client;
2679 chr->chr_add_watch = tcp_chr_add_watch;
2680
2681 if (is_listen) {
2682 s->listen_fd = fd;
2683 s->listen_chan = io_channel_from_socket(s->listen_fd);
2684 s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr);
2685 if (is_telnet) {
2686 s->do_telnetopt = 1;
2687 }
2688 } else {
2689 s->connected = 1;
2690 s->fd = fd;
2691 socket_set_nodelay(fd);
2692 s->chan = io_channel_from_socket(s->fd);
2693 tcp_chr_connect(chr);
2694 }
2695
2696 if (is_listen && is_waitconnect) {
2697 printf("QEMU waiting for connection on: %s\n",
2698 chr->filename);
2699 tcp_chr_accept(s->listen_chan, G_IO_IN, chr);
2700 socket_set_nonblock(s->listen_fd);
2701 }
2702 return chr;
2703}
2704
2705static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
2706{
2707 CharDriverState *chr = NULL;
2708 Error *local_err = NULL;
2709 int fd = -1;
2710 int is_listen;
2711 int is_waitconnect;
2712 int do_nodelay;
2713 int is_unix;
2714 int is_telnet;
2715
2716 is_listen = qemu_opt_get_bool(opts, "server", 0);
2717 is_waitconnect = qemu_opt_get_bool(opts, "wait", 1);
2718 is_telnet = qemu_opt_get_bool(opts, "telnet", 0);
2719 do_nodelay = !qemu_opt_get_bool(opts, "delay", 1);
2720 is_unix = qemu_opt_get(opts, "path") != NULL;
2721 if (!is_listen)
2722 is_waitconnect = 0;
2723
2724 if (is_unix) {
2725 if (is_listen) {
2726 fd = unix_listen_opts(opts, &local_err);
2727 } else {
2728 fd = unix_connect_opts(opts, &local_err, NULL, NULL);
2729 }
2730 } else {
2731 if (is_listen) {
2732 fd = inet_listen_opts(opts, 0, &local_err);
2733 } else {
2734 fd = inet_connect_opts(opts, &local_err, NULL, NULL);
2735 }
2736 }
2737 if (fd < 0) {
2738 goto fail;
2739 }
2740
2741 if (!is_waitconnect)
2742 socket_set_nonblock(fd);
2743
2744 chr = qemu_chr_open_socket_fd(fd, do_nodelay, is_listen, is_telnet,
2745 is_waitconnect, &local_err);
2746 if (error_is_set(&local_err)) {
2747 goto fail;
2748 }
2749 return chr;
2750
2751
2752 fail:
2753 if (local_err) {
2754 qerror_report_err(local_err);
2755 error_free(local_err);
2756 }
2757 if (fd >= 0) {
2758 closesocket(fd);
2759 }
2760 if (chr) {
2761 g_free(chr->opaque);
2762 g_free(chr);
2763 }
2764 return NULL;
2765}
2766
2767/***********************************************************/
2768/* Memory chardev */
2769typedef struct {
2770 size_t outbuf_size;
2771 size_t outbuf_capacity;
2772 uint8_t *outbuf;
2773} MemoryDriver;
2774
2775static int mem_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2776{
2777 MemoryDriver *d = chr->opaque;
2778
2779 /* TODO: the QString implementation has the same code, we should
2780 * introduce a generic way to do this in cutils.c */
2781 if (d->outbuf_capacity < d->outbuf_size + len) {
2782 /* grow outbuf */
2783 d->outbuf_capacity += len;
2784 d->outbuf_capacity *= 2;
2785 d->outbuf = g_realloc(d->outbuf, d->outbuf_capacity);
2786 }
2787
2788 memcpy(d->outbuf + d->outbuf_size, buf, len);
2789 d->outbuf_size += len;
2790
2791 return len;
2792}
2793
2794void qemu_chr_init_mem(CharDriverState *chr)
2795{
2796 MemoryDriver *d;
2797
2798 d = g_malloc(sizeof(*d));
2799 d->outbuf_size = 0;
2800 d->outbuf_capacity = 4096;
2801 d->outbuf = g_malloc0(d->outbuf_capacity);
2802
2803 memset(chr, 0, sizeof(*chr));
2804 chr->opaque = d;
2805 chr->chr_write = mem_chr_write;
2806}
2807
2808QString *qemu_chr_mem_to_qs(CharDriverState *chr)
2809{
2810 MemoryDriver *d = chr->opaque;
2811 return qstring_from_substr((char *) d->outbuf, 0, d->outbuf_size - 1);
2812}
2813
2814/* NOTE: this driver can not be closed with qemu_chr_delete()! */
2815void qemu_chr_close_mem(CharDriverState *chr)
2816{
2817 MemoryDriver *d = chr->opaque;
2818
2819 g_free(d->outbuf);
2820 g_free(chr->opaque);
2821 chr->opaque = NULL;
2822 chr->chr_write = NULL;
2823}
2824
2825size_t qemu_chr_mem_osize(const CharDriverState *chr)
2826{
2827 const MemoryDriver *d = chr->opaque;
2828 return d->outbuf_size;
2829}
2830
2831/*********************************************************/
2832/* Ring buffer chardev */
2833
2834typedef struct {
2835 size_t size;
2836 size_t prod;
2837 size_t cons;
2838 uint8_t *cbuf;
2839} RingBufCharDriver;
2840
2841static size_t ringbuf_count(const CharDriverState *chr)
2842{
2843 const RingBufCharDriver *d = chr->opaque;
2844
2845 return d->prod - d->cons;
2846}
2847
2848static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len)
2849{
2850 RingBufCharDriver *d = chr->opaque;
2851 int i;
2852
2853 if (!buf || (len < 0)) {
2854 return -1;
2855 }
2856
2857 for (i = 0; i < len; i++ ) {
2858 d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
2859 if (d->prod - d->cons > d->size) {
2860 d->cons = d->prod - d->size;
2861 }
2862 }
2863
2864 return 0;
2865}
2866
2867static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len)
2868{
2869 RingBufCharDriver *d = chr->opaque;
2870 int i;
2871
2872 for (i = 0; i < len && d->cons != d->prod; i++) {
2873 buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
2874 }
2875
2876 return i;
2877}
2878
2879static void ringbuf_chr_close(struct CharDriverState *chr)
2880{
2881 RingBufCharDriver *d = chr->opaque;
2882
2883 g_free(d->cbuf);
2884 g_free(d);
2885 chr->opaque = NULL;
2886}
2887
2888static CharDriverState *qemu_chr_open_ringbuf(QemuOpts *opts)
2889{
2890 CharDriverState *chr;
2891 RingBufCharDriver *d;
2892
2893 chr = g_malloc0(sizeof(CharDriverState));
2894 d = g_malloc(sizeof(*d));
2895
2896 d->size = qemu_opt_get_size(opts, "size", 0);
2897 if (d->size == 0) {
2898 d->size = 65536;
2899 }
2900
2901 /* The size must be power of 2 */
2902 if (d->size & (d->size - 1)) {
2903 error_report("size of ringbuf device must be power of two");
2904 goto fail;
2905 }
2906
2907 d->prod = 0;
2908 d->cons = 0;
2909 d->cbuf = g_malloc0(d->size);
2910
2911 chr->opaque = d;
2912 chr->chr_write = ringbuf_chr_write;
2913 chr->chr_close = ringbuf_chr_close;
2914
2915 return chr;
2916
2917fail:
2918 g_free(d);
2919 g_free(chr);
2920 return NULL;
2921}
2922
2923static bool chr_is_ringbuf(const CharDriverState *chr)
2924{
2925 return chr->chr_write == ringbuf_chr_write;
2926}
2927
2928void qmp_ringbuf_write(const char *device, const char *data,
2929 bool has_format, enum DataFormat format,
2930 Error **errp)
2931{
2932 CharDriverState *chr;
2933 const uint8_t *write_data;
2934 int ret;
2935 size_t write_count;
2936
2937 chr = qemu_chr_find(device);
2938 if (!chr) {
2939 error_setg(errp, "Device '%s' not found", device);
2940 return;
2941 }
2942
2943 if (!chr_is_ringbuf(chr)) {
2944 error_setg(errp,"%s is not a ringbuf device", device);
2945 return;
2946 }
2947
2948 if (has_format && (format == DATA_FORMAT_BASE64)) {
2949 write_data = g_base64_decode(data, &write_count);
2950 } else {
2951 write_data = (uint8_t *)data;
2952 write_count = strlen(data);
2953 }
2954
2955 ret = ringbuf_chr_write(chr, write_data, write_count);
2956
2957 if (write_data != (uint8_t *)data) {
2958 g_free((void *)write_data);
2959 }
2960
2961 if (ret < 0) {
2962 error_setg(errp, "Failed to write to device %s", device);
2963 return;
2964 }
2965}
2966
2967char *qmp_ringbuf_read(const char *device, int64_t size,
2968 bool has_format, enum DataFormat format,
2969 Error **errp)
2970{
2971 CharDriverState *chr;
2972 uint8_t *read_data;
2973 size_t count;
2974 char *data;
2975
2976 chr = qemu_chr_find(device);
2977 if (!chr) {
2978 error_setg(errp, "Device '%s' not found", device);
2979 return NULL;
2980 }
2981
2982 if (!chr_is_ringbuf(chr)) {
2983 error_setg(errp,"%s is not a ringbuf device", device);
2984 return NULL;
2985 }
2986
2987 if (size <= 0) {
2988 error_setg(errp, "size must be greater than zero");
2989 return NULL;
2990 }
2991
2992 count = ringbuf_count(chr);
2993 size = size > count ? count : size;
2994 read_data = g_malloc(size + 1);
2995
2996 ringbuf_chr_read(chr, read_data, size);
2997
2998 if (has_format && (format == DATA_FORMAT_BASE64)) {
2999 data = g_base64_encode(read_data, size);
3000 g_free(read_data);
3001 } else {
3002 /*
3003 * FIXME should read only complete, valid UTF-8 characters up
3004 * to @size bytes. Invalid sequences should be replaced by a
3005 * suitable replacement character. Except when (and only
3006 * when) ring buffer lost characters since last read, initial
3007 * continuation characters should be dropped.
3008 */
3009 read_data[size] = 0;
3010 data = (char *)read_data;
3011 }
3012
3013 return data;
3014}
3015
3016QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename)
3017{
3018 char host[65], port[33], width[8], height[8];
3019 int pos;
3020 const char *p;
3021 QemuOpts *opts;
3022 Error *local_err = NULL;
3023
3024 opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err);
3025 if (error_is_set(&local_err)) {
3026 qerror_report_err(local_err);
3027 error_free(local_err);
3028 return NULL;
3029 }
3030
3031 if (strstart(filename, "mon:", &p)) {
3032 filename = p;
3033 qemu_opt_set(opts, "mux", "on");
3034 }
3035
3036 if (strcmp(filename, "null") == 0 ||
3037 strcmp(filename, "pty") == 0 ||
3038 strcmp(filename, "msmouse") == 0 ||
3039 strcmp(filename, "braille") == 0 ||
3040 strcmp(filename, "stdio") == 0) {
3041 qemu_opt_set(opts, "backend", filename);
3042 return opts;
3043 }
3044 if (strstart(filename, "vc", &p)) {
3045 qemu_opt_set(opts, "backend", "vc");
3046 if (*p == ':') {
3047 if (sscanf(p+1, "%8[0-9]x%8[0-9]", width, height) == 2) {
3048 /* pixels */
3049 qemu_opt_set(opts, "width", width);
3050 qemu_opt_set(opts, "height", height);
3051 } else if (sscanf(p+1, "%8[0-9]Cx%8[0-9]C", width, height) == 2) {
3052 /* chars */
3053 qemu_opt_set(opts, "cols", width);
3054 qemu_opt_set(opts, "rows", height);
3055 } else {
3056 goto fail;
3057 }
3058 }
3059 return opts;
3060 }
3061 if (strcmp(filename, "con:") == 0) {
3062 qemu_opt_set(opts, "backend", "console");
3063 return opts;
3064 }
3065 if (strstart(filename, "COM", NULL)) {
3066 qemu_opt_set(opts, "backend", "serial");
3067 qemu_opt_set(opts, "path", filename);
3068 return opts;
3069 }
3070 if (strstart(filename, "file:", &p)) {
3071 qemu_opt_set(opts, "backend", "file");
3072 qemu_opt_set(opts, "path", p);
3073 return opts;
3074 }
3075 if (strstart(filename, "pipe:", &p)) {
3076 qemu_opt_set(opts, "backend", "pipe");
3077 qemu_opt_set(opts, "path", p);
3078 return opts;
3079 }
3080 if (strstart(filename, "tcp:", &p) ||
3081 strstart(filename, "telnet:", &p)) {
3082 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3083 host[0] = 0;
3084 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1)
3085 goto fail;
3086 }
3087 qemu_opt_set(opts, "backend", "socket");
3088 qemu_opt_set(opts, "host", host);
3089 qemu_opt_set(opts, "port", port);
3090 if (p[pos] == ',') {
3091 if (qemu_opts_do_parse(opts, p+pos+1, NULL) != 0)
3092 goto fail;
3093 }
3094 if (strstart(filename, "telnet:", &p))
3095 qemu_opt_set(opts, "telnet", "on");
3096 return opts;
3097 }
3098 if (strstart(filename, "udp:", &p)) {
3099 qemu_opt_set(opts, "backend", "udp");
3100 if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) {
3101 host[0] = 0;
3102 if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) {
3103 goto fail;
3104 }
3105 }
3106 qemu_opt_set(opts, "host", host);
3107 qemu_opt_set(opts, "port", port);
3108 if (p[pos] == '@') {
3109 p += pos + 1;
3110 if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) {
3111 host[0] = 0;
3112 if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) {
3113 goto fail;
3114 }
3115 }
3116 qemu_opt_set(opts, "localaddr", host);
3117 qemu_opt_set(opts, "localport", port);
3118 }
3119 return opts;
3120 }
3121 if (strstart(filename, "unix:", &p)) {
3122 qemu_opt_set(opts, "backend", "socket");
3123 if (qemu_opts_do_parse(opts, p, "path") != 0)
3124 goto fail;
3125 return opts;
3126 }
3127 if (strstart(filename, "/dev/parport", NULL) ||
3128 strstart(filename, "/dev/ppi", NULL)) {
3129 qemu_opt_set(opts, "backend", "parport");
3130 qemu_opt_set(opts, "path", filename);
3131 return opts;
3132 }
3133 if (strstart(filename, "/dev/", NULL)) {
3134 qemu_opt_set(opts, "backend", "tty");
3135 qemu_opt_set(opts, "path", filename);
3136 return opts;
3137 }
3138
3139fail:
3140 qemu_opts_del(opts);
3141 return NULL;
3142}
3143
3144#ifdef HAVE_CHARDEV_PARPORT
3145
3146static CharDriverState *qemu_chr_open_pp(QemuOpts *opts)
3147{
3148 const char *filename = qemu_opt_get(opts, "path");
3149 int fd;
3150
3151 fd = qemu_open(filename, O_RDWR);
3152 if (fd < 0) {
3153 return NULL;
3154 }
3155 return qemu_chr_open_pp_fd(fd);
3156}
3157
3158#endif
3159
3160static const struct {
3161 const char *name;
3162 CharDriverState *(*open)(QemuOpts *opts);
3163} backend_table[] = {
3164 { .name = "null", .open = qemu_chr_open_null },
3165 { .name = "socket", .open = qemu_chr_open_socket },
3166 { .name = "udp", .open = qemu_chr_open_udp },
3167 { .name = "msmouse", .open = qemu_chr_open_msmouse },
3168 { .name = "vc", .open = vc_init },
3169 { .name = "memory", .open = qemu_chr_open_ringbuf },
3170#ifdef _WIN32
3171 { .name = "file", .open = qemu_chr_open_win_file_out },
3172 { .name = "pipe", .open = qemu_chr_open_win_pipe },
3173 { .name = "console", .open = qemu_chr_open_win_con },
3174 { .name = "serial", .open = qemu_chr_open_win },
3175 { .name = "stdio", .open = qemu_chr_open_win_stdio },
3176#else
3177 { .name = "file", .open = qemu_chr_open_file_out },
3178 { .name = "pipe", .open = qemu_chr_open_pipe },
3179 { .name = "stdio", .open = qemu_chr_open_stdio },
3180#endif
3181#ifdef CONFIG_BRLAPI
3182 { .name = "braille", .open = chr_baum_init },
3183#endif
3184#ifdef HAVE_CHARDEV_TTY
3185 { .name = "tty", .open = qemu_chr_open_tty },
3186 { .name = "serial", .open = qemu_chr_open_tty },
3187 { .name = "pty", .open = qemu_chr_open_pty },
3188#endif
3189#ifdef HAVE_CHARDEV_PARPORT
3190 { .name = "parallel", .open = qemu_chr_open_pp },
3191 { .name = "parport", .open = qemu_chr_open_pp },
3192#endif
3193#ifdef CONFIG_SPICE
3194 { .name = "spicevmc", .open = qemu_chr_open_spice },
3195#if SPICE_SERVER_VERSION >= 0x000c02
3196 { .name = "spiceport", .open = qemu_chr_open_spice_port },
3197#endif
3198#endif
3199};
3200
3201CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts,
3202 void (*init)(struct CharDriverState *s),
3203 Error **errp)
3204{
3205 CharDriverState *chr;
3206 int i;
3207
3208 if (qemu_opts_id(opts) == NULL) {
3209 error_setg(errp, "chardev: no id specified");
3210 goto err;
3211 }
3212
3213 if (qemu_opt_get(opts, "backend") == NULL) {
3214 error_setg(errp, "chardev: \"%s\" missing backend",
3215 qemu_opts_id(opts));
3216 goto err;
3217 }
3218 for (i = 0; i < ARRAY_SIZE(backend_table); i++) {
3219 if (strcmp(backend_table[i].name, qemu_opt_get(opts, "backend")) == 0)
3220 break;
3221 }
3222 if (i == ARRAY_SIZE(backend_table)) {
3223 error_setg(errp, "chardev: backend \"%s\" not found",
3224 qemu_opt_get(opts, "backend"));
3225 goto err;
3226 }
3227
3228 chr = backend_table[i].open(opts);
3229 if (!chr) {
3230 error_setg(errp, "chardev: opening backend \"%s\" failed",
3231 qemu_opt_get(opts, "backend"));
3232 goto err;
3233 }
3234
3235 if (!chr->filename)
3236 chr->filename = g_strdup(qemu_opt_get(opts, "backend"));
3237 chr->init = init;
3238 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3239
3240 if (qemu_opt_get_bool(opts, "mux", 0)) {
3241 CharDriverState *base = chr;
3242 int len = strlen(qemu_opts_id(opts)) + 6;
3243 base->label = g_malloc(len);
3244 snprintf(base->label, len, "%s-base", qemu_opts_id(opts));
3245 chr = qemu_chr_open_mux(base);
3246 chr->filename = base->filename;
3247 chr->avail_connections = MAX_MUX;
3248 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3249 } else {
3250 chr->avail_connections = 1;
3251 }
3252 chr->label = g_strdup(qemu_opts_id(opts));
3253 chr->opts = opts;
3254 return chr;
3255
3256err:
3257 qemu_opts_del(opts);
3258 return NULL;
3259}
3260
3261CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s))
3262{
3263 const char *p;
3264 CharDriverState *chr;
3265 QemuOpts *opts;
3266 Error *err = NULL;
3267
3268 if (strstart(filename, "chardev:", &p)) {
3269 return qemu_chr_find(p);
3270 }
3271
3272 opts = qemu_chr_parse_compat(label, filename);
3273 if (!opts)
3274 return NULL;
3275
3276 chr = qemu_chr_new_from_opts(opts, init, &err);
3277 if (error_is_set(&err)) {
3278 fprintf(stderr, "%s\n", error_get_pretty(err));
3279 error_free(err);
3280 }
3281 if (chr && qemu_opt_get_bool(opts, "mux", 0)) {
3282 monitor_init(chr, MONITOR_USE_READLINE);
3283 }
3284 return chr;
3285}
3286
3287void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo)
3288{
3289 if (chr->chr_set_echo) {
3290 chr->chr_set_echo(chr, echo);
3291 }
3292}
3293
3294void qemu_chr_fe_open(struct CharDriverState *chr)
3295{
3296 if (chr->chr_guest_open) {
3297 chr->chr_guest_open(chr);
3298 }
3299}
3300
3301void qemu_chr_fe_close(struct CharDriverState *chr)
3302{
3303 if (chr->chr_guest_close) {
3304 chr->chr_guest_close(chr);
3305 }
3306}
3307
3308guint qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond,
3309 GIOFunc func, void *user_data)
3310{
3311 GSource *src;
3312 guint tag;
3313
3314 if (s->chr_add_watch == NULL) {
3315 return -ENOSYS;
3316 }
3317
3318 src = s->chr_add_watch(s, cond);
3319 g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
3320 tag = g_source_attach(src, NULL);
3321 g_source_unref(src);
3322
3323 return tag;
3324}
3325
3326void qemu_chr_delete(CharDriverState *chr)
3327{
3328 QTAILQ_REMOVE(&chardevs, chr, next);
3329 if (chr->chr_close) {
3330 chr->chr_close(chr);
3331 }
3332 g_free(chr->filename);
3333 g_free(chr->label);
3334 if (chr->opts) {
3335 qemu_opts_del(chr->opts);
3336 }
3337 g_free(chr);
3338}
3339
3340ChardevInfoList *qmp_query_chardev(Error **errp)
3341{
3342 ChardevInfoList *chr_list = NULL;
3343 CharDriverState *chr;
3344
3345 QTAILQ_FOREACH(chr, &chardevs, next) {
3346 ChardevInfoList *info = g_malloc0(sizeof(*info));
3347 info->value = g_malloc0(sizeof(*info->value));
3348 info->value->label = g_strdup(chr->label);
3349 info->value->filename = g_strdup(chr->filename);
3350
3351 info->next = chr_list;
3352 chr_list = info;
3353 }
3354
3355 return chr_list;
3356}
3357
3358CharDriverState *qemu_chr_find(const char *name)
3359{
3360 CharDriverState *chr;
3361
3362 QTAILQ_FOREACH(chr, &chardevs, next) {
3363 if (strcmp(chr->label, name) != 0)
3364 continue;
3365 return chr;
3366 }
3367 return NULL;
3368}
3369
3370/* Get a character (serial) device interface. */
3371CharDriverState *qemu_char_get_next_serial(void)
3372{
3373 static int next_serial;
3374
3375 /* FIXME: This function needs to go away: use chardev properties! */
3376 return serial_hds[next_serial++];
3377}
3378
3379QemuOptsList qemu_chardev_opts = {
3380 .name = "chardev",
3381 .implied_opt_name = "backend",
3382 .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head),
3383 .desc = {
3384 {
3385 .name = "backend",
3386 .type = QEMU_OPT_STRING,
3387 },{
3388 .name = "path",
3389 .type = QEMU_OPT_STRING,
3390 },{
3391 .name = "host",
3392 .type = QEMU_OPT_STRING,
3393 },{
3394 .name = "port",
3395 .type = QEMU_OPT_STRING,
3396 },{
3397 .name = "localaddr",
3398 .type = QEMU_OPT_STRING,
3399 },{
3400 .name = "localport",
3401 .type = QEMU_OPT_STRING,
3402 },{
3403 .name = "to",
3404 .type = QEMU_OPT_NUMBER,
3405 },{
3406 .name = "ipv4",
3407 .type = QEMU_OPT_BOOL,
3408 },{
3409 .name = "ipv6",
3410 .type = QEMU_OPT_BOOL,
3411 },{
3412 .name = "wait",
3413 .type = QEMU_OPT_BOOL,
3414 },{
3415 .name = "server",
3416 .type = QEMU_OPT_BOOL,
3417 },{
3418 .name = "delay",
3419 .type = QEMU_OPT_BOOL,
3420 },{
3421 .name = "telnet",
3422 .type = QEMU_OPT_BOOL,
3423 },{
3424 .name = "width",
3425 .type = QEMU_OPT_NUMBER,
3426 },{
3427 .name = "height",
3428 .type = QEMU_OPT_NUMBER,
3429 },{
3430 .name = "cols",
3431 .type = QEMU_OPT_NUMBER,
3432 },{
3433 .name = "rows",
3434 .type = QEMU_OPT_NUMBER,
3435 },{
3436 .name = "mux",
3437 .type = QEMU_OPT_BOOL,
3438 },{
3439 .name = "signal",
3440 .type = QEMU_OPT_BOOL,
3441 },{
3442 .name = "name",
3443 .type = QEMU_OPT_STRING,
3444 },{
3445 .name = "debug",
3446 .type = QEMU_OPT_NUMBER,
3447 },{
3448 .name = "size",
3449 .type = QEMU_OPT_SIZE,
3450 },
3451 { /* end of list */ }
3452 },
3453};
3454
3455#ifdef _WIN32
3456
3457static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
3458{
3459 HANDLE out;
3460
3461 if (file->in) {
3462 error_setg(errp, "input file not supported");
3463 return NULL;
3464 }
3465
3466 out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
3467 OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
3468 if (out == INVALID_HANDLE_VALUE) {
3469 error_setg(errp, "open %s failed", file->out);
3470 return NULL;
3471 }
3472 return qemu_chr_open_win_file(out);
3473}
3474
3475static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
3476 Error **errp)
3477{
3478 return qemu_chr_open_win_path(serial->device);
3479}
3480
3481static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
3482 Error **errp)
3483{
3484 error_setg(errp, "character device backend type 'parallel' not supported");
3485 return NULL;
3486}
3487
3488#else /* WIN32 */
3489
3490static int qmp_chardev_open_file_source(char *src, int flags,
3491 Error **errp)
3492{
3493 int fd = -1;
3494
3495 TFR(fd = qemu_open(src, flags, 0666));
3496 if (fd == -1) {
3497 error_setg(errp, "open %s: %s", src, strerror(errno));
3498 }
3499 return fd;
3500}
3501
3502static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
3503{
3504 int flags, in = -1, out = -1;
3505
3506 flags = O_WRONLY | O_TRUNC | O_CREAT | O_BINARY;
3507 out = qmp_chardev_open_file_source(file->out, flags, errp);
3508 if (error_is_set(errp)) {
3509 return NULL;
3510 }
3511
3512 if (file->in) {
3513 flags = O_RDONLY;
3514 in = qmp_chardev_open_file_source(file->in, flags, errp);
3515 if (error_is_set(errp)) {
3516 qemu_close(out);
3517 return NULL;
3518 }
3519 }
3520
3521 return qemu_chr_open_fd(in, out);
3522}
3523
3524static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
3525 Error **errp)
3526{
3527#ifdef HAVE_CHARDEV_TTY
3528 int fd;
3529
3530 fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp);
3531 if (error_is_set(errp)) {
3532 return NULL;
3533 }
3534 socket_set_nonblock(fd);
3535 return qemu_chr_open_tty_fd(fd);
3536#else
3537 error_setg(errp, "character device backend type 'serial' not supported");
3538 return NULL;
3539#endif
3540}
3541
3542static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
3543 Error **errp)
3544{
3545#ifdef HAVE_CHARDEV_PARPORT
3546 int fd;
3547
3548 fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp);
3549 if (error_is_set(errp)) {
3550 return NULL;
3551 }
3552 return qemu_chr_open_pp_fd(fd);
3553#else
3554 error_setg(errp, "character device backend type 'parallel' not supported");
3555 return NULL;
3556#endif
3557}
3558
3559#endif /* WIN32 */
3560
3561static CharDriverState *qmp_chardev_open_socket(ChardevSocket *sock,
3562 Error **errp)
3563{
3564 SocketAddress *addr = sock->addr;
3565 bool do_nodelay = sock->has_nodelay ? sock->nodelay : false;
3566 bool is_listen = sock->has_server ? sock->server : true;
3567 bool is_telnet = sock->has_telnet ? sock->telnet : false;
3568 bool is_waitconnect = sock->has_wait ? sock->wait : false;
3569 int fd;
3570
3571 if (is_listen) {
3572 fd = socket_listen(addr, errp);
3573 } else {
3574 fd = socket_connect(addr, errp, NULL, NULL);
3575 }
3576 if (error_is_set(errp)) {
3577 return NULL;
3578 }
3579 return qemu_chr_open_socket_fd(fd, do_nodelay, is_listen,
3580 is_telnet, is_waitconnect, errp);
3581}
3582
3583ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend,
3584 Error **errp)
3585{
3586 ChardevReturn *ret = g_new0(ChardevReturn, 1);
3587 CharDriverState *chr = NULL;
3588
3589 chr = qemu_chr_find(id);
3590 if (chr) {
3591 error_setg(errp, "Chardev '%s' already exists", id);
3592 g_free(ret);
3593 return NULL;
3594 }
3595
3596 switch (backend->kind) {
3597 case CHARDEV_BACKEND_KIND_FILE:
3598 chr = qmp_chardev_open_file(backend->file, errp);
3599 break;
3600 case CHARDEV_BACKEND_KIND_SERIAL:
3601 chr = qmp_chardev_open_serial(backend->serial, errp);
3602 break;
3603 case CHARDEV_BACKEND_KIND_PARALLEL:
3604 chr = qmp_chardev_open_parallel(backend->parallel, errp);
3605 break;
3606 case CHARDEV_BACKEND_KIND_SOCKET:
3607 chr = qmp_chardev_open_socket(backend->socket, errp);
3608 break;
3609#ifdef HAVE_CHARDEV_TTY
3610 case CHARDEV_BACKEND_KIND_PTY:
3611 {
3612 /* qemu_chr_open_pty sets "path" in opts */
3613 QemuOpts *opts;
3614 opts = qemu_opts_create_nofail(qemu_find_opts("chardev"));
3615 chr = qemu_chr_open_pty(opts);
3616 ret->pty = g_strdup(qemu_opt_get(opts, "path"));
3617 ret->has_pty = true;
3618 qemu_opts_del(opts);
3619 break;
3620 }
3621#endif
3622 case CHARDEV_BACKEND_KIND_NULL:
3623 chr = qemu_chr_open_null(NULL);
3624 break;
3625 default:
3626 error_setg(errp, "unknown chardev backend (%d)", backend->kind);
3627 break;
3628 }
3629
3630 if (chr == NULL && !error_is_set(errp)) {
3631 error_setg(errp, "Failed to create chardev");
3632 }
3633 if (chr) {
3634 chr->label = g_strdup(id);
3635 chr->avail_connections = 1;
3636 QTAILQ_INSERT_TAIL(&chardevs, chr, next);
3637 return ret;
3638 } else {
3639 g_free(ret);
3640 return NULL;
3641 }
3642}
3643
3644void qmp_chardev_remove(const char *id, Error **errp)
3645{
3646 CharDriverState *chr;
3647
3648 chr = qemu_chr_find(id);
3649 if (NULL == chr) {
3650 error_setg(errp, "Chardev '%s' not found", id);
3651 return;
3652 }
3653 if (chr->chr_can_read || chr->chr_read ||
3654 chr->chr_event || chr->handler_opaque) {
3655 error_setg(errp, "Chardev '%s' is busy", id);
3656 return;
3657 }
3658 qemu_chr_delete(chr);
3659}
Qemu copy for testing