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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/osdep.h" | |
25 | #include "qemu-common.h" | |
26 | #include "qemu/cutils.h" | |
27 | #include "monitor/monitor.h" | |
28 | #include "sysemu/sysemu.h" | |
29 | #include "sysemu/block-backend.h" | |
30 | #include "qemu/error-report.h" | |
31 | #include "qemu/timer.h" | |
32 | #include "sysemu/char.h" | |
33 | #include "hw/usb.h" | |
34 | #include "qmp-commands.h" | |
35 | #include "qapi/clone-visitor.h" | |
36 | #include "qapi-visit.h" | |
37 | #include "qemu/base64.h" | |
38 | #include "io/channel-socket.h" | |
39 | #include "io/channel-file.h" | |
40 | #include "io/channel-tls.h" | |
41 | #include "sysemu/replay.h" | |
42 | #include "qemu/help_option.h" | |
43 | ||
44 | #include <zlib.h> | |
45 | ||
46 | #ifndef _WIN32 | |
47 | #include <sys/times.h> | |
48 | #include <sys/wait.h> | |
49 | #include <termios.h> | |
50 | #include <sys/ioctl.h> | |
51 | #include <sys/resource.h> | |
52 | #include <sys/socket.h> | |
53 | #include <netinet/in.h> | |
54 | #include <net/if.h> | |
55 | #include <arpa/inet.h> | |
56 | #include <netdb.h> | |
57 | #include <sys/select.h> | |
58 | #ifdef CONFIG_BSD | |
59 | #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) | |
60 | #include <dev/ppbus/ppi.h> | |
61 | #include <dev/ppbus/ppbconf.h> | |
62 | #elif defined(__DragonFly__) | |
63 | #include <dev/misc/ppi/ppi.h> | |
64 | #include <bus/ppbus/ppbconf.h> | |
65 | #endif | |
66 | #else | |
67 | #ifdef __linux__ | |
68 | #include <linux/ppdev.h> | |
69 | #include <linux/parport.h> | |
70 | #endif | |
71 | #ifdef __sun__ | |
72 | #include <sys/ethernet.h> | |
73 | #include <sys/sockio.h> | |
74 | #include <netinet/arp.h> | |
75 | #include <netinet/in.h> | |
76 | #include <netinet/in_systm.h> | |
77 | #include <netinet/ip.h> | |
78 | #include <netinet/ip_icmp.h> // must come after ip.h | |
79 | #include <netinet/udp.h> | |
80 | #include <netinet/tcp.h> | |
81 | #endif | |
82 | #endif | |
83 | #endif | |
84 | ||
85 | #include "qemu/sockets.h" | |
86 | #include "ui/qemu-spice.h" | |
87 | ||
88 | #define READ_BUF_LEN 4096 | |
89 | #define READ_RETRIES 10 | |
90 | #define TCP_MAX_FDS 16 | |
91 | ||
92 | typedef struct MuxDriver MuxDriver; | |
93 | ||
94 | /***********************************************************/ | |
95 | /* Socket address helpers */ | |
96 | ||
97 | static char *SocketAddress_to_str(const char *prefix, SocketAddress *addr, | |
98 | bool is_listen, bool is_telnet) | |
99 | { | |
100 | switch (addr->type) { | |
101 | case SOCKET_ADDRESS_KIND_INET: | |
102 | return g_strdup_printf("%s%s:%s:%s%s", prefix, | |
103 | is_telnet ? "telnet" : "tcp", | |
104 | addr->u.inet.data->host, | |
105 | addr->u.inet.data->port, | |
106 | is_listen ? ",server" : ""); | |
107 | break; | |
108 | case SOCKET_ADDRESS_KIND_UNIX: | |
109 | return g_strdup_printf("%sunix:%s%s", prefix, | |
110 | addr->u.q_unix.data->path, | |
111 | is_listen ? ",server" : ""); | |
112 | break; | |
113 | case SOCKET_ADDRESS_KIND_FD: | |
114 | return g_strdup_printf("%sfd:%s%s", prefix, addr->u.fd.data->str, | |
115 | is_listen ? ",server" : ""); | |
116 | break; | |
117 | default: | |
118 | abort(); | |
119 | } | |
120 | } | |
121 | ||
122 | static char *sockaddr_to_str(struct sockaddr_storage *ss, socklen_t ss_len, | |
123 | struct sockaddr_storage *ps, socklen_t ps_len, | |
124 | bool is_listen, bool is_telnet) | |
125 | { | |
126 | char shost[NI_MAXHOST], sserv[NI_MAXSERV]; | |
127 | char phost[NI_MAXHOST], pserv[NI_MAXSERV]; | |
128 | const char *left = "", *right = ""; | |
129 | ||
130 | switch (ss->ss_family) { | |
131 | #ifndef _WIN32 | |
132 | case AF_UNIX: | |
133 | return g_strdup_printf("unix:%s%s", | |
134 | ((struct sockaddr_un *)(ss))->sun_path, | |
135 | is_listen ? ",server" : ""); | |
136 | #endif | |
137 | case AF_INET6: | |
138 | left = "["; | |
139 | right = "]"; | |
140 | /* fall through */ | |
141 | case AF_INET: | |
142 | getnameinfo((struct sockaddr *) ss, ss_len, shost, sizeof(shost), | |
143 | sserv, sizeof(sserv), NI_NUMERICHOST | NI_NUMERICSERV); | |
144 | getnameinfo((struct sockaddr *) ps, ps_len, phost, sizeof(phost), | |
145 | pserv, sizeof(pserv), NI_NUMERICHOST | NI_NUMERICSERV); | |
146 | return g_strdup_printf("%s:%s%s%s:%s%s <-> %s%s%s:%s", | |
147 | is_telnet ? "telnet" : "tcp", | |
148 | left, shost, right, sserv, | |
149 | is_listen ? ",server" : "", | |
150 | left, phost, right, pserv); | |
151 | ||
152 | default: | |
153 | return g_strdup_printf("unknown"); | |
154 | } | |
155 | } | |
156 | ||
157 | /***********************************************************/ | |
158 | /* character device */ | |
159 | ||
160 | static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs = | |
161 | QTAILQ_HEAD_INITIALIZER(chardevs); | |
162 | ||
163 | static void qemu_chr_free_common(CharDriverState *chr); | |
164 | ||
165 | CharDriverState *qemu_chr_alloc(ChardevCommon *backend, Error **errp) | |
166 | { | |
167 | CharDriverState *chr = g_malloc0(sizeof(CharDriverState)); | |
168 | qemu_mutex_init(&chr->chr_write_lock); | |
169 | ||
170 | if (backend->has_logfile) { | |
171 | int flags = O_WRONLY | O_CREAT; | |
172 | if (backend->has_logappend && | |
173 | backend->logappend) { | |
174 | flags |= O_APPEND; | |
175 | } else { | |
176 | flags |= O_TRUNC; | |
177 | } | |
178 | chr->logfd = qemu_open(backend->logfile, flags, 0666); | |
179 | if (chr->logfd < 0) { | |
180 | error_setg_errno(errp, errno, | |
181 | "Unable to open logfile %s", | |
182 | backend->logfile); | |
183 | g_free(chr); | |
184 | return NULL; | |
185 | } | |
186 | } else { | |
187 | chr->logfd = -1; | |
188 | } | |
189 | ||
190 | return chr; | |
191 | } | |
192 | ||
193 | void qemu_chr_be_event(CharDriverState *s, int event) | |
194 | { | |
195 | CharBackend *be = s->be; | |
196 | ||
197 | /* Keep track if the char device is open */ | |
198 | switch (event) { | |
199 | case CHR_EVENT_OPENED: | |
200 | s->be_open = 1; | |
201 | break; | |
202 | case CHR_EVENT_CLOSED: | |
203 | s->be_open = 0; | |
204 | break; | |
205 | } | |
206 | ||
207 | if (!be || !be->chr_event) { | |
208 | return; | |
209 | } | |
210 | ||
211 | be->chr_event(be->opaque, event); | |
212 | } | |
213 | ||
214 | void qemu_chr_be_generic_open(CharDriverState *s) | |
215 | { | |
216 | qemu_chr_be_event(s, CHR_EVENT_OPENED); | |
217 | } | |
218 | ||
219 | ||
220 | /* Not reporting errors from writing to logfile, as logs are | |
221 | * defined to be "best effort" only */ | |
222 | static void qemu_chr_fe_write_log(CharDriverState *s, | |
223 | const uint8_t *buf, size_t len) | |
224 | { | |
225 | size_t done = 0; | |
226 | ssize_t ret; | |
227 | ||
228 | if (s->logfd < 0) { | |
229 | return; | |
230 | } | |
231 | ||
232 | while (done < len) { | |
233 | retry: | |
234 | ret = write(s->logfd, buf + done, len - done); | |
235 | if (ret == -1 && errno == EAGAIN) { | |
236 | g_usleep(100); | |
237 | goto retry; | |
238 | } | |
239 | ||
240 | if (ret <= 0) { | |
241 | return; | |
242 | } | |
243 | done += ret; | |
244 | } | |
245 | } | |
246 | ||
247 | static int qemu_chr_fe_write_buffer(CharDriverState *s, const uint8_t *buf, int len, int *offset) | |
248 | { | |
249 | int res = 0; | |
250 | *offset = 0; | |
251 | ||
252 | qemu_mutex_lock(&s->chr_write_lock); | |
253 | while (*offset < len) { | |
254 | retry: | |
255 | res = s->chr_write(s, buf + *offset, len - *offset); | |
256 | if (res < 0 && errno == EAGAIN) { | |
257 | g_usleep(100); | |
258 | goto retry; | |
259 | } | |
260 | ||
261 | if (res <= 0) { | |
262 | break; | |
263 | } | |
264 | ||
265 | *offset += res; | |
266 | } | |
267 | if (*offset > 0) { | |
268 | qemu_chr_fe_write_log(s, buf, *offset); | |
269 | } | |
270 | qemu_mutex_unlock(&s->chr_write_lock); | |
271 | ||
272 | return res; | |
273 | } | |
274 | ||
275 | int qemu_chr_fe_write(CharBackend *be, const uint8_t *buf, int len) | |
276 | { | |
277 | CharDriverState *s = be->chr; | |
278 | int ret; | |
279 | ||
280 | if (!s) { | |
281 | return 0; | |
282 | } | |
283 | ||
284 | if (s->replay && replay_mode == REPLAY_MODE_PLAY) { | |
285 | int offset; | |
286 | replay_char_write_event_load(&ret, &offset); | |
287 | assert(offset <= len); | |
288 | qemu_chr_fe_write_buffer(s, buf, offset, &offset); | |
289 | return ret; | |
290 | } | |
291 | ||
292 | qemu_mutex_lock(&s->chr_write_lock); | |
293 | ret = s->chr_write(s, buf, len); | |
294 | ||
295 | if (ret > 0) { | |
296 | qemu_chr_fe_write_log(s, buf, ret); | |
297 | } | |
298 | ||
299 | qemu_mutex_unlock(&s->chr_write_lock); | |
300 | ||
301 | if (s->replay && replay_mode == REPLAY_MODE_RECORD) { | |
302 | replay_char_write_event_save(ret, ret < 0 ? 0 : ret); | |
303 | } | |
304 | ||
305 | return ret; | |
306 | } | |
307 | ||
308 | static int qemu_chr_write_all(CharDriverState *s, const uint8_t *buf, int len) | |
309 | { | |
310 | int offset; | |
311 | int res; | |
312 | ||
313 | if (s->replay && replay_mode == REPLAY_MODE_PLAY) { | |
314 | replay_char_write_event_load(&res, &offset); | |
315 | assert(offset <= len); | |
316 | qemu_chr_fe_write_buffer(s, buf, offset, &offset); | |
317 | return res; | |
318 | } | |
319 | ||
320 | res = qemu_chr_fe_write_buffer(s, buf, len, &offset); | |
321 | ||
322 | if (s->replay && replay_mode == REPLAY_MODE_RECORD) { | |
323 | replay_char_write_event_save(res, offset); | |
324 | } | |
325 | ||
326 | if (res < 0) { | |
327 | return res; | |
328 | } | |
329 | return offset; | |
330 | } | |
331 | ||
332 | int qemu_chr_fe_write_all(CharBackend *be, const uint8_t *buf, int len) | |
333 | { | |
334 | CharDriverState *s = be->chr; | |
335 | ||
336 | if (!s) { | |
337 | return 0; | |
338 | } | |
339 | ||
340 | return qemu_chr_write_all(s, buf, len); | |
341 | } | |
342 | ||
343 | int qemu_chr_fe_read_all(CharBackend *be, uint8_t *buf, int len) | |
344 | { | |
345 | CharDriverState *s = be->chr; | |
346 | int offset = 0, counter = 10; | |
347 | int res; | |
348 | ||
349 | if (!s || !s->chr_sync_read) { | |
350 | return 0; | |
351 | } | |
352 | ||
353 | if (s->replay && replay_mode == REPLAY_MODE_PLAY) { | |
354 | return replay_char_read_all_load(buf); | |
355 | } | |
356 | ||
357 | while (offset < len) { | |
358 | retry: | |
359 | res = s->chr_sync_read(s, buf + offset, len - offset); | |
360 | if (res == -1 && errno == EAGAIN) { | |
361 | g_usleep(100); | |
362 | goto retry; | |
363 | } | |
364 | ||
365 | if (res == 0) { | |
366 | break; | |
367 | } | |
368 | ||
369 | if (res < 0) { | |
370 | if (s->replay && replay_mode == REPLAY_MODE_RECORD) { | |
371 | replay_char_read_all_save_error(res); | |
372 | } | |
373 | return res; | |
374 | } | |
375 | ||
376 | offset += res; | |
377 | ||
378 | if (!counter--) { | |
379 | break; | |
380 | } | |
381 | } | |
382 | ||
383 | if (s->replay && replay_mode == REPLAY_MODE_RECORD) { | |
384 | replay_char_read_all_save_buf(buf, offset); | |
385 | } | |
386 | return offset; | |
387 | } | |
388 | ||
389 | int qemu_chr_fe_ioctl(CharBackend *be, int cmd, void *arg) | |
390 | { | |
391 | CharDriverState *s = be->chr; | |
392 | int res; | |
393 | ||
394 | if (!s || !s->chr_ioctl || s->replay) { | |
395 | res = -ENOTSUP; | |
396 | } else { | |
397 | res = s->chr_ioctl(s, cmd, arg); | |
398 | } | |
399 | ||
400 | return res; | |
401 | } | |
402 | ||
403 | int qemu_chr_be_can_write(CharDriverState *s) | |
404 | { | |
405 | CharBackend *be = s->be; | |
406 | ||
407 | if (!be || !be->chr_can_read) { | |
408 | return 0; | |
409 | } | |
410 | ||
411 | return be->chr_can_read(be->opaque); | |
412 | } | |
413 | ||
414 | void qemu_chr_be_write_impl(CharDriverState *s, uint8_t *buf, int len) | |
415 | { | |
416 | CharBackend *be = s->be; | |
417 | ||
418 | if (be && be->chr_read) { | |
419 | be->chr_read(be->opaque, buf, len); | |
420 | } | |
421 | } | |
422 | ||
423 | void qemu_chr_be_write(CharDriverState *s, uint8_t *buf, int len) | |
424 | { | |
425 | if (s->replay) { | |
426 | if (replay_mode == REPLAY_MODE_PLAY) { | |
427 | return; | |
428 | } | |
429 | replay_chr_be_write(s, buf, len); | |
430 | } else { | |
431 | qemu_chr_be_write_impl(s, buf, len); | |
432 | } | |
433 | } | |
434 | ||
435 | int qemu_chr_fe_get_msgfd(CharBackend *be) | |
436 | { | |
437 | CharDriverState *s = be->chr; | |
438 | int fd; | |
439 | int res = (qemu_chr_fe_get_msgfds(be, &fd, 1) == 1) ? fd : -1; | |
440 | if (s && s->replay) { | |
441 | fprintf(stderr, | |
442 | "Replay: get msgfd is not supported for serial devices yet\n"); | |
443 | exit(1); | |
444 | } | |
445 | return res; | |
446 | } | |
447 | ||
448 | int qemu_chr_fe_get_msgfds(CharBackend *be, int *fds, int len) | |
449 | { | |
450 | CharDriverState *s = be->chr; | |
451 | ||
452 | if (!s) { | |
453 | return -1; | |
454 | } | |
455 | ||
456 | return s->get_msgfds ? s->get_msgfds(s, fds, len) : -1; | |
457 | } | |
458 | ||
459 | int qemu_chr_fe_set_msgfds(CharBackend *be, int *fds, int num) | |
460 | { | |
461 | CharDriverState *s = be->chr; | |
462 | ||
463 | if (!s) { | |
464 | return -1; | |
465 | } | |
466 | ||
467 | return s->set_msgfds ? s->set_msgfds(s, fds, num) : -1; | |
468 | } | |
469 | ||
470 | int qemu_chr_add_client(CharDriverState *s, int fd) | |
471 | { | |
472 | return s->chr_add_client ? s->chr_add_client(s, fd) : -1; | |
473 | } | |
474 | ||
475 | void qemu_chr_fe_accept_input(CharBackend *be) | |
476 | { | |
477 | CharDriverState *s = be->chr; | |
478 | ||
479 | if (!s) { | |
480 | return; | |
481 | } | |
482 | ||
483 | if (s->chr_accept_input) | |
484 | s->chr_accept_input(s); | |
485 | qemu_notify_event(); | |
486 | } | |
487 | ||
488 | void qemu_chr_fe_printf(CharBackend *be, const char *fmt, ...) | |
489 | { | |
490 | char buf[READ_BUF_LEN]; | |
491 | va_list ap; | |
492 | va_start(ap, fmt); | |
493 | vsnprintf(buf, sizeof(buf), fmt, ap); | |
494 | /* XXX this blocks entire thread. Rewrite to use | |
495 | * qemu_chr_fe_write and background I/O callbacks */ | |
496 | qemu_chr_fe_write_all(be, (uint8_t *)buf, strlen(buf)); | |
497 | va_end(ap); | |
498 | } | |
499 | ||
500 | static void remove_fd_in_watch(CharDriverState *chr); | |
501 | static void mux_chr_set_handlers(CharDriverState *chr, GMainContext *context); | |
502 | static void mux_set_focus(MuxDriver *d, int focus); | |
503 | ||
504 | static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len) | |
505 | { | |
506 | return len; | |
507 | } | |
508 | ||
509 | static CharDriverState *qemu_chr_open_null(const char *id, | |
510 | ChardevBackend *backend, | |
511 | ChardevReturn *ret, | |
512 | bool *be_opened, | |
513 | Error **errp) | |
514 | { | |
515 | CharDriverState *chr; | |
516 | ChardevCommon *common = backend->u.null.data; | |
517 | ||
518 | chr = qemu_chr_alloc(common, errp); | |
519 | if (!chr) { | |
520 | return NULL; | |
521 | } | |
522 | chr->chr_write = null_chr_write; | |
523 | *be_opened = false; | |
524 | return chr; | |
525 | } | |
526 | ||
527 | /* MUX driver for serial I/O splitting */ | |
528 | #define MAX_MUX 4 | |
529 | #define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */ | |
530 | #define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1) | |
531 | struct MuxDriver { | |
532 | CharBackend *backends[MAX_MUX]; | |
533 | CharBackend chr; | |
534 | int focus; | |
535 | int mux_cnt; | |
536 | int term_got_escape; | |
537 | int max_size; | |
538 | /* Intermediate input buffer allows to catch escape sequences even if the | |
539 | currently active device is not accepting any input - but only until it | |
540 | is full as well. */ | |
541 | unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE]; | |
542 | int prod[MAX_MUX]; | |
543 | int cons[MAX_MUX]; | |
544 | int timestamps; | |
545 | ||
546 | /* Protected by the CharDriverState chr_write_lock. */ | |
547 | int linestart; | |
548 | int64_t timestamps_start; | |
549 | }; | |
550 | ||
551 | /* Called with chr_write_lock held. */ | |
552 | static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len) | |
553 | { | |
554 | MuxDriver *d = chr->opaque; | |
555 | int ret; | |
556 | if (!d->timestamps) { | |
557 | ret = qemu_chr_fe_write(&d->chr, buf, len); | |
558 | } else { | |
559 | int i; | |
560 | ||
561 | ret = 0; | |
562 | for (i = 0; i < len; i++) { | |
563 | if (d->linestart) { | |
564 | char buf1[64]; | |
565 | int64_t ti; | |
566 | int secs; | |
567 | ||
568 | ti = qemu_clock_get_ms(QEMU_CLOCK_REALTIME); | |
569 | if (d->timestamps_start == -1) | |
570 | d->timestamps_start = ti; | |
571 | ti -= d->timestamps_start; | |
572 | secs = ti / 1000; | |
573 | snprintf(buf1, sizeof(buf1), | |
574 | "[%02d:%02d:%02d.%03d] ", | |
575 | secs / 3600, | |
576 | (secs / 60) % 60, | |
577 | secs % 60, | |
578 | (int)(ti % 1000)); | |
579 | /* XXX this blocks entire thread. Rewrite to use | |
580 | * qemu_chr_fe_write and background I/O callbacks */ | |
581 | qemu_chr_fe_write_all(&d->chr, | |
582 | (uint8_t *)buf1, strlen(buf1)); | |
583 | d->linestart = 0; | |
584 | } | |
585 | ret += qemu_chr_fe_write(&d->chr, buf + i, 1); | |
586 | if (buf[i] == '\n') { | |
587 | d->linestart = 1; | |
588 | } | |
589 | } | |
590 | } | |
591 | return ret; | |
592 | } | |
593 | ||
594 | static const char * const mux_help[] = { | |
595 | "% h print this help\n\r", | |
596 | "% x exit emulator\n\r", | |
597 | "% s save disk data back to file (if -snapshot)\n\r", | |
598 | "% t toggle console timestamps\n\r", | |
599 | "% b send break (magic sysrq)\n\r", | |
600 | "% c switch between console and monitor\n\r", | |
601 | "% % sends %\n\r", | |
602 | NULL | |
603 | }; | |
604 | ||
605 | int term_escape_char = 0x01; /* ctrl-a is used for escape */ | |
606 | static void mux_print_help(CharDriverState *chr) | |
607 | { | |
608 | int i, j; | |
609 | char ebuf[15] = "Escape-Char"; | |
610 | char cbuf[50] = "\n\r"; | |
611 | ||
612 | if (term_escape_char > 0 && term_escape_char < 26) { | |
613 | snprintf(cbuf, sizeof(cbuf), "\n\r"); | |
614 | snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a'); | |
615 | } else { | |
616 | snprintf(cbuf, sizeof(cbuf), | |
617 | "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r", | |
618 | term_escape_char); | |
619 | } | |
620 | /* XXX this blocks entire thread. Rewrite to use | |
621 | * qemu_chr_fe_write and background I/O callbacks */ | |
622 | qemu_chr_write_all(chr, (uint8_t *)cbuf, strlen(cbuf)); | |
623 | for (i = 0; mux_help[i] != NULL; i++) { | |
624 | for (j=0; mux_help[i][j] != '\0'; j++) { | |
625 | if (mux_help[i][j] == '%') | |
626 | qemu_chr_write_all(chr, (uint8_t *)ebuf, strlen(ebuf)); | |
627 | else | |
628 | qemu_chr_write_all(chr, (uint8_t *)&mux_help[i][j], 1); | |
629 | } | |
630 | } | |
631 | } | |
632 | ||
633 | static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event) | |
634 | { | |
635 | CharBackend *be = d->backends[mux_nr]; | |
636 | ||
637 | if (be && be->chr_event) { | |
638 | be->chr_event(be->opaque, event); | |
639 | } | |
640 | } | |
641 | ||
642 | static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch) | |
643 | { | |
644 | if (d->term_got_escape) { | |
645 | d->term_got_escape = 0; | |
646 | if (ch == term_escape_char) | |
647 | goto send_char; | |
648 | switch(ch) { | |
649 | case '?': | |
650 | case 'h': | |
651 | mux_print_help(chr); | |
652 | break; | |
653 | case 'x': | |
654 | { | |
655 | const char *term = "QEMU: Terminated\n\r"; | |
656 | qemu_chr_write_all(chr, (uint8_t *)term, strlen(term)); | |
657 | exit(0); | |
658 | break; | |
659 | } | |
660 | case 's': | |
661 | blk_commit_all(); | |
662 | break; | |
663 | case 'b': | |
664 | qemu_chr_be_event(chr, CHR_EVENT_BREAK); | |
665 | break; | |
666 | case 'c': | |
667 | assert(d->mux_cnt > 0); /* handler registered with first fe */ | |
668 | /* Switch to the next registered device */ | |
669 | mux_set_focus(d, (d->focus + 1) % d->mux_cnt); | |
670 | break; | |
671 | case 't': | |
672 | d->timestamps = !d->timestamps; | |
673 | d->timestamps_start = -1; | |
674 | d->linestart = 0; | |
675 | break; | |
676 | } | |
677 | } else if (ch == term_escape_char) { | |
678 | d->term_got_escape = 1; | |
679 | } else { | |
680 | send_char: | |
681 | return 1; | |
682 | } | |
683 | return 0; | |
684 | } | |
685 | ||
686 | static void mux_chr_accept_input(CharDriverState *chr) | |
687 | { | |
688 | MuxDriver *d = chr->opaque; | |
689 | int m = d->focus; | |
690 | CharBackend *be = d->backends[m]; | |
691 | ||
692 | while (be && d->prod[m] != d->cons[m] && | |
693 | be->chr_can_read && be->chr_can_read(be->opaque)) { | |
694 | be->chr_read(be->opaque, | |
695 | &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1); | |
696 | } | |
697 | } | |
698 | ||
699 | static int mux_chr_can_read(void *opaque) | |
700 | { | |
701 | CharDriverState *chr = opaque; | |
702 | MuxDriver *d = chr->opaque; | |
703 | int m = d->focus; | |
704 | CharBackend *be = d->backends[m]; | |
705 | ||
706 | if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE) { | |
707 | return 1; | |
708 | } | |
709 | ||
710 | if (be && be->chr_can_read) { | |
711 | return be->chr_can_read(be->opaque); | |
712 | } | |
713 | ||
714 | return 0; | |
715 | } | |
716 | ||
717 | static void mux_chr_read(void *opaque, const uint8_t *buf, int size) | |
718 | { | |
719 | CharDriverState *chr = opaque; | |
720 | MuxDriver *d = chr->opaque; | |
721 | int m = d->focus; | |
722 | CharBackend *be = d->backends[m]; | |
723 | int i; | |
724 | ||
725 | mux_chr_accept_input(opaque); | |
726 | ||
727 | for (i = 0; i < size; i++) | |
728 | if (mux_proc_byte(chr, d, buf[i])) { | |
729 | if (d->prod[m] == d->cons[m] && | |
730 | be && be->chr_can_read && | |
731 | be->chr_can_read(be->opaque)) | |
732 | be->chr_read(be->opaque, &buf[i], 1); | |
733 | else | |
734 | d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i]; | |
735 | } | |
736 | } | |
737 | ||
738 | static bool muxes_realized; | |
739 | ||
740 | static void mux_chr_event(void *opaque, int event) | |
741 | { | |
742 | CharDriverState *chr = opaque; | |
743 | MuxDriver *d = chr->opaque; | |
744 | int i; | |
745 | ||
746 | if (!muxes_realized) { | |
747 | return; | |
748 | } | |
749 | ||
750 | /* Send the event to all registered listeners */ | |
751 | for (i = 0; i < d->mux_cnt; i++) | |
752 | mux_chr_send_event(d, i, event); | |
753 | } | |
754 | ||
755 | /** | |
756 | * Called after processing of default and command-line-specified | |
757 | * chardevs to deliver CHR_EVENT_OPENED events to any FEs attached | |
758 | * to a mux chardev. This is done here to ensure that | |
759 | * output/prompts/banners are only displayed for the FE that has | |
760 | * focus when initial command-line processing/machine init is | |
761 | * completed. | |
762 | * | |
763 | * After this point, any new FE attached to any new or existing | |
764 | * mux will receive CHR_EVENT_OPENED notifications for the BE | |
765 | * immediately. | |
766 | */ | |
767 | static void muxes_realize_done(Notifier *notifier, void *unused) | |
768 | { | |
769 | CharDriverState *chr; | |
770 | ||
771 | QTAILQ_FOREACH(chr, &chardevs, next) { | |
772 | if (chr->is_mux) { | |
773 | MuxDriver *d = chr->opaque; | |
774 | int i; | |
775 | ||
776 | /* send OPENED to all already-attached FEs */ | |
777 | for (i = 0; i < d->mux_cnt; i++) { | |
778 | mux_chr_send_event(d, i, CHR_EVENT_OPENED); | |
779 | } | |
780 | /* mark mux as OPENED so any new FEs will immediately receive | |
781 | * OPENED event | |
782 | */ | |
783 | qemu_chr_be_generic_open(chr); | |
784 | } | |
785 | } | |
786 | muxes_realized = true; | |
787 | } | |
788 | ||
789 | static Notifier muxes_realize_notify = { | |
790 | .notify = muxes_realize_done, | |
791 | }; | |
792 | ||
793 | static GSource *mux_chr_add_watch(CharDriverState *s, GIOCondition cond) | |
794 | { | |
795 | MuxDriver *d = s->opaque; | |
796 | CharDriverState *chr = qemu_chr_fe_get_driver(&d->chr); | |
797 | ||
798 | return chr->chr_add_watch(chr, cond); | |
799 | } | |
800 | ||
801 | static void mux_chr_free(struct CharDriverState *chr) | |
802 | { | |
803 | MuxDriver *d = chr->opaque; | |
804 | int i; | |
805 | ||
806 | for (i = 0; i < d->mux_cnt; i++) { | |
807 | CharBackend *be = d->backends[i]; | |
808 | if (be) { | |
809 | be->chr = NULL; | |
810 | } | |
811 | } | |
812 | qemu_chr_fe_deinit(&d->chr); | |
813 | g_free(d); | |
814 | } | |
815 | ||
816 | static void mux_chr_set_handlers(CharDriverState *chr, GMainContext *context) | |
817 | { | |
818 | MuxDriver *d = chr->opaque; | |
819 | ||
820 | /* Fix up the real driver with mux routines */ | |
821 | qemu_chr_fe_set_handlers(&d->chr, | |
822 | mux_chr_can_read, | |
823 | mux_chr_read, | |
824 | mux_chr_event, | |
825 | chr, | |
826 | context, true); | |
827 | } | |
828 | ||
829 | static void mux_set_focus(MuxDriver *d, int focus) | |
830 | { | |
831 | assert(focus >= 0); | |
832 | assert(focus < d->mux_cnt); | |
833 | ||
834 | if (d->focus != -1) { | |
835 | mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT); | |
836 | } | |
837 | ||
838 | d->focus = focus; | |
839 | mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN); | |
840 | } | |
841 | ||
842 | static CharDriverState *qemu_chr_open_mux(const char *id, | |
843 | ChardevBackend *backend, | |
844 | ChardevReturn *ret, | |
845 | bool *be_opened, | |
846 | Error **errp) | |
847 | { | |
848 | ChardevMux *mux = backend->u.mux.data; | |
849 | CharDriverState *chr, *drv; | |
850 | MuxDriver *d; | |
851 | ChardevCommon *common = qapi_ChardevMux_base(mux); | |
852 | ||
853 | drv = qemu_chr_find(mux->chardev); | |
854 | if (drv == NULL) { | |
855 | error_setg(errp, "mux: base chardev %s not found", mux->chardev); | |
856 | return NULL; | |
857 | } | |
858 | ||
859 | chr = qemu_chr_alloc(common, errp); | |
860 | if (!chr) { | |
861 | return NULL; | |
862 | } | |
863 | d = g_new0(MuxDriver, 1); | |
864 | ||
865 | chr->opaque = d; | |
866 | d->focus = -1; | |
867 | chr->chr_free = mux_chr_free; | |
868 | chr->chr_write = mux_chr_write; | |
869 | chr->chr_accept_input = mux_chr_accept_input; | |
870 | /* Frontend guest-open / -close notification is not support with muxes */ | |
871 | chr->chr_set_fe_open = NULL; | |
872 | if (drv->chr_add_watch) { | |
873 | chr->chr_add_watch = mux_chr_add_watch; | |
874 | } | |
875 | /* only default to opened state if we've realized the initial | |
876 | * set of muxes | |
877 | */ | |
878 | *be_opened = muxes_realized; | |
879 | chr->is_mux = 1; | |
880 | if (!qemu_chr_fe_init(&d->chr, drv, errp)) { | |
881 | qemu_chr_free(chr); | |
882 | return NULL; | |
883 | } | |
884 | ||
885 | return chr; | |
886 | } | |
887 | ||
888 | CharDriverState *qemu_chr_fe_get_driver(CharBackend *be) | |
889 | { | |
890 | return be->chr; | |
891 | } | |
892 | ||
893 | bool qemu_chr_fe_init(CharBackend *b, CharDriverState *s, Error **errp) | |
894 | { | |
895 | int tag = 0; | |
896 | ||
897 | if (s->is_mux) { | |
898 | MuxDriver *d = s->opaque; | |
899 | ||
900 | if (d->mux_cnt >= MAX_MUX) { | |
901 | goto unavailable; | |
902 | } | |
903 | ||
904 | d->backends[d->mux_cnt] = b; | |
905 | tag = d->mux_cnt++; | |
906 | } else if (s->be) { | |
907 | goto unavailable; | |
908 | } else { | |
909 | s->be = b; | |
910 | } | |
911 | ||
912 | b->fe_open = false; | |
913 | b->tag = tag; | |
914 | b->chr = s; | |
915 | return true; | |
916 | ||
917 | unavailable: | |
918 | error_setg(errp, QERR_DEVICE_IN_USE, s->label); | |
919 | return false; | |
920 | } | |
921 | ||
922 | static bool qemu_chr_is_busy(CharDriverState *s) | |
923 | { | |
924 | if (s->is_mux) { | |
925 | MuxDriver *d = s->opaque; | |
926 | return d->mux_cnt >= 0; | |
927 | } else { | |
928 | return s->be != NULL; | |
929 | } | |
930 | } | |
931 | ||
932 | void qemu_chr_fe_deinit(CharBackend *b) | |
933 | { | |
934 | assert(b); | |
935 | ||
936 | if (b->chr) { | |
937 | qemu_chr_fe_set_handlers(b, NULL, NULL, NULL, NULL, NULL, true); | |
938 | b->chr->be = NULL; | |
939 | if (b->chr->is_mux) { | |
940 | MuxDriver *d = b->chr->opaque; | |
941 | d->backends[b->tag] = NULL; | |
942 | } | |
943 | b->chr = NULL; | |
944 | } | |
945 | } | |
946 | ||
947 | void qemu_chr_fe_set_handlers(CharBackend *b, | |
948 | IOCanReadHandler *fd_can_read, | |
949 | IOReadHandler *fd_read, | |
950 | IOEventHandler *fd_event, | |
951 | void *opaque, | |
952 | GMainContext *context, | |
953 | bool set_open) | |
954 | { | |
955 | CharDriverState *s; | |
956 | int fe_open; | |
957 | ||
958 | s = b->chr; | |
959 | if (!s) { | |
960 | return; | |
961 | } | |
962 | ||
963 | if (!opaque && !fd_can_read && !fd_read && !fd_event) { | |
964 | fe_open = 0; | |
965 | remove_fd_in_watch(s); | |
966 | } else { | |
967 | fe_open = 1; | |
968 | } | |
969 | b->chr_can_read = fd_can_read; | |
970 | b->chr_read = fd_read; | |
971 | b->chr_event = fd_event; | |
972 | b->opaque = opaque; | |
973 | if (s->chr_update_read_handler) { | |
974 | s->chr_update_read_handler(s, context); | |
975 | } | |
976 | ||
977 | if (set_open) { | |
978 | qemu_chr_fe_set_open(b, fe_open); | |
979 | } | |
980 | ||
981 | if (fe_open) { | |
982 | qemu_chr_fe_take_focus(b); | |
983 | /* We're connecting to an already opened device, so let's make sure we | |
984 | also get the open event */ | |
985 | if (s->be_open) { | |
986 | qemu_chr_be_generic_open(s); | |
987 | } | |
988 | } | |
989 | ||
990 | if (s->is_mux) { | |
991 | mux_chr_set_handlers(s, context); | |
992 | } | |
993 | } | |
994 | ||
995 | void qemu_chr_fe_take_focus(CharBackend *b) | |
996 | { | |
997 | if (!b->chr) { | |
998 | return; | |
999 | } | |
1000 | ||
1001 | if (b->chr->is_mux) { | |
1002 | mux_set_focus(b->chr->opaque, b->tag); | |
1003 | } | |
1004 | } | |
1005 | ||
1006 | typedef struct IOWatchPoll | |
1007 | { | |
1008 | GSource parent; | |
1009 | ||
1010 | QIOChannel *ioc; | |
1011 | GSource *src; | |
1012 | ||
1013 | IOCanReadHandler *fd_can_read; | |
1014 | GSourceFunc fd_read; | |
1015 | void *opaque; | |
1016 | GMainContext *context; | |
1017 | } IOWatchPoll; | |
1018 | ||
1019 | static IOWatchPoll *io_watch_poll_from_source(GSource *source) | |
1020 | { | |
1021 | return container_of(source, IOWatchPoll, parent); | |
1022 | } | |
1023 | ||
1024 | static gboolean io_watch_poll_prepare(GSource *source, | |
1025 | gint *timeout_) | |
1026 | { | |
1027 | IOWatchPoll *iwp = io_watch_poll_from_source(source); | |
1028 | bool now_active = iwp->fd_can_read(iwp->opaque) > 0; | |
1029 | bool was_active = iwp->src != NULL; | |
1030 | if (was_active == now_active) { | |
1031 | return FALSE; | |
1032 | } | |
1033 | ||
1034 | if (now_active) { | |
1035 | iwp->src = qio_channel_create_watch( | |
1036 | iwp->ioc, G_IO_IN | G_IO_ERR | G_IO_HUP | G_IO_NVAL); | |
1037 | g_source_set_callback(iwp->src, iwp->fd_read, iwp->opaque, NULL); | |
1038 | g_source_attach(iwp->src, iwp->context); | |
1039 | } else { | |
1040 | g_source_destroy(iwp->src); | |
1041 | g_source_unref(iwp->src); | |
1042 | iwp->src = NULL; | |
1043 | } | |
1044 | return FALSE; | |
1045 | } | |
1046 | ||
1047 | static gboolean io_watch_poll_check(GSource *source) | |
1048 | { | |
1049 | return FALSE; | |
1050 | } | |
1051 | ||
1052 | static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback, | |
1053 | gpointer user_data) | |
1054 | { | |
1055 | abort(); | |
1056 | } | |
1057 | ||
1058 | static void io_watch_poll_finalize(GSource *source) | |
1059 | { | |
1060 | /* Due to a glib bug, removing the last reference to a source | |
1061 | * inside a finalize callback causes recursive locking (and a | |
1062 | * deadlock). This is not a problem inside other callbacks, | |
1063 | * including dispatch callbacks, so we call io_remove_watch_poll | |
1064 | * to remove this source. At this point, iwp->src must | |
1065 | * be NULL, or we would leak it. | |
1066 | * | |
1067 | * This would be solved much more elegantly by child sources, | |
1068 | * but we support older glib versions that do not have them. | |
1069 | */ | |
1070 | IOWatchPoll *iwp = io_watch_poll_from_source(source); | |
1071 | assert(iwp->src == NULL); | |
1072 | } | |
1073 | ||
1074 | static GSourceFuncs io_watch_poll_funcs = { | |
1075 | .prepare = io_watch_poll_prepare, | |
1076 | .check = io_watch_poll_check, | |
1077 | .dispatch = io_watch_poll_dispatch, | |
1078 | .finalize = io_watch_poll_finalize, | |
1079 | }; | |
1080 | ||
1081 | /* Can only be used for read */ | |
1082 | static guint io_add_watch_poll(CharDriverState *chr, | |
1083 | QIOChannel *ioc, | |
1084 | IOCanReadHandler *fd_can_read, | |
1085 | QIOChannelFunc fd_read, | |
1086 | gpointer user_data, | |
1087 | GMainContext *context) | |
1088 | { | |
1089 | IOWatchPoll *iwp; | |
1090 | int tag; | |
1091 | char *name; | |
1092 | ||
1093 | iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs, | |
1094 | sizeof(IOWatchPoll)); | |
1095 | iwp->fd_can_read = fd_can_read; | |
1096 | iwp->opaque = user_data; | |
1097 | iwp->ioc = ioc; | |
1098 | iwp->fd_read = (GSourceFunc) fd_read; | |
1099 | iwp->src = NULL; | |
1100 | iwp->context = context; | |
1101 | ||
1102 | name = g_strdup_printf("chardev-iowatch-%s", chr->label); | |
1103 | g_source_set_name((GSource *)iwp, name); | |
1104 | g_free(name); | |
1105 | ||
1106 | tag = g_source_attach(&iwp->parent, context); | |
1107 | g_source_unref(&iwp->parent); | |
1108 | return tag; | |
1109 | } | |
1110 | ||
1111 | static void io_remove_watch_poll(guint tag) | |
1112 | { | |
1113 | GSource *source; | |
1114 | IOWatchPoll *iwp; | |
1115 | ||
1116 | g_return_if_fail (tag > 0); | |
1117 | ||
1118 | source = g_main_context_find_source_by_id(NULL, tag); | |
1119 | g_return_if_fail (source != NULL); | |
1120 | ||
1121 | iwp = io_watch_poll_from_source(source); | |
1122 | if (iwp->src) { | |
1123 | g_source_destroy(iwp->src); | |
1124 | g_source_unref(iwp->src); | |
1125 | iwp->src = NULL; | |
1126 | } | |
1127 | g_source_destroy(&iwp->parent); | |
1128 | } | |
1129 | ||
1130 | static void remove_fd_in_watch(CharDriverState *chr) | |
1131 | { | |
1132 | if (chr->fd_in_tag) { | |
1133 | io_remove_watch_poll(chr->fd_in_tag); | |
1134 | chr->fd_in_tag = 0; | |
1135 | } | |
1136 | } | |
1137 | ||
1138 | ||
1139 | static int io_channel_send_full(QIOChannel *ioc, | |
1140 | const void *buf, size_t len, | |
1141 | int *fds, size_t nfds) | |
1142 | { | |
1143 | size_t offset = 0; | |
1144 | ||
1145 | while (offset < len) { | |
1146 | ssize_t ret = 0; | |
1147 | struct iovec iov = { .iov_base = (char *)buf + offset, | |
1148 | .iov_len = len - offset }; | |
1149 | ||
1150 | ret = qio_channel_writev_full( | |
1151 | ioc, &iov, 1, | |
1152 | fds, nfds, NULL); | |
1153 | if (ret == QIO_CHANNEL_ERR_BLOCK) { | |
1154 | if (offset) { | |
1155 | return offset; | |
1156 | } | |
1157 | ||
1158 | errno = EAGAIN; | |
1159 | return -1; | |
1160 | } else if (ret < 0) { | |
1161 | errno = EINVAL; | |
1162 | return -1; | |
1163 | } | |
1164 | ||
1165 | offset += ret; | |
1166 | } | |
1167 | ||
1168 | return offset; | |
1169 | } | |
1170 | ||
1171 | ||
1172 | #ifndef _WIN32 | |
1173 | static int io_channel_send(QIOChannel *ioc, const void *buf, size_t len) | |
1174 | { | |
1175 | return io_channel_send_full(ioc, buf, len, NULL, 0); | |
1176 | } | |
1177 | ||
1178 | ||
1179 | typedef struct FDCharDriver { | |
1180 | CharDriverState *chr; | |
1181 | QIOChannel *ioc_in, *ioc_out; | |
1182 | int max_size; | |
1183 | } FDCharDriver; | |
1184 | ||
1185 | /* Called with chr_write_lock held. */ | |
1186 | static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len) | |
1187 | { | |
1188 | FDCharDriver *s = chr->opaque; | |
1189 | ||
1190 | return io_channel_send(s->ioc_out, buf, len); | |
1191 | } | |
1192 | ||
1193 | static gboolean fd_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque) | |
1194 | { | |
1195 | CharDriverState *chr = opaque; | |
1196 | FDCharDriver *s = chr->opaque; | |
1197 | int len; | |
1198 | uint8_t buf[READ_BUF_LEN]; | |
1199 | ssize_t ret; | |
1200 | ||
1201 | len = sizeof(buf); | |
1202 | if (len > s->max_size) { | |
1203 | len = s->max_size; | |
1204 | } | |
1205 | if (len == 0) { | |
1206 | return TRUE; | |
1207 | } | |
1208 | ||
1209 | ret = qio_channel_read( | |
1210 | chan, (gchar *)buf, len, NULL); | |
1211 | if (ret == 0) { | |
1212 | remove_fd_in_watch(chr); | |
1213 | qemu_chr_be_event(chr, CHR_EVENT_CLOSED); | |
1214 | return FALSE; | |
1215 | } | |
1216 | if (ret > 0) { | |
1217 | qemu_chr_be_write(chr, buf, ret); | |
1218 | } | |
1219 | ||
1220 | return TRUE; | |
1221 | } | |
1222 | ||
1223 | static int fd_chr_read_poll(void *opaque) | |
1224 | { | |
1225 | CharDriverState *chr = opaque; | |
1226 | FDCharDriver *s = chr->opaque; | |
1227 | ||
1228 | s->max_size = qemu_chr_be_can_write(chr); | |
1229 | return s->max_size; | |
1230 | } | |
1231 | ||
1232 | static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond) | |
1233 | { | |
1234 | FDCharDriver *s = chr->opaque; | |
1235 | return qio_channel_create_watch(s->ioc_out, cond); | |
1236 | } | |
1237 | ||
1238 | static void fd_chr_update_read_handler(CharDriverState *chr, | |
1239 | GMainContext *context) | |
1240 | { | |
1241 | FDCharDriver *s = chr->opaque; | |
1242 | ||
1243 | remove_fd_in_watch(chr); | |
1244 | if (s->ioc_in) { | |
1245 | chr->fd_in_tag = io_add_watch_poll(chr, s->ioc_in, | |
1246 | fd_chr_read_poll, | |
1247 | fd_chr_read, chr, | |
1248 | context); | |
1249 | } | |
1250 | } | |
1251 | ||
1252 | static void fd_chr_free(struct CharDriverState *chr) | |
1253 | { | |
1254 | FDCharDriver *s = chr->opaque; | |
1255 | ||
1256 | remove_fd_in_watch(chr); | |
1257 | if (s->ioc_in) { | |
1258 | object_unref(OBJECT(s->ioc_in)); | |
1259 | } | |
1260 | if (s->ioc_out) { | |
1261 | object_unref(OBJECT(s->ioc_out)); | |
1262 | } | |
1263 | ||
1264 | g_free(s); | |
1265 | qemu_chr_be_event(chr, CHR_EVENT_CLOSED); | |
1266 | } | |
1267 | ||
1268 | /* open a character device to a unix fd */ | |
1269 | static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out, | |
1270 | ChardevCommon *backend, Error **errp) | |
1271 | { | |
1272 | CharDriverState *chr; | |
1273 | FDCharDriver *s; | |
1274 | char *name; | |
1275 | ||
1276 | chr = qemu_chr_alloc(backend, errp); | |
1277 | if (!chr) { | |
1278 | return NULL; | |
1279 | } | |
1280 | s = g_new0(FDCharDriver, 1); | |
1281 | s->ioc_in = QIO_CHANNEL(qio_channel_file_new_fd(fd_in)); | |
1282 | name = g_strdup_printf("chardev-file-in-%s", chr->label); | |
1283 | qio_channel_set_name(QIO_CHANNEL(s->ioc_in), name); | |
1284 | g_free(name); | |
1285 | s->ioc_out = QIO_CHANNEL(qio_channel_file_new_fd(fd_out)); | |
1286 | name = g_strdup_printf("chardev-file-out-%s", chr->label); | |
1287 | qio_channel_set_name(QIO_CHANNEL(s->ioc_out), name); | |
1288 | g_free(name); | |
1289 | qemu_set_nonblock(fd_out); | |
1290 | s->chr = chr; | |
1291 | chr->opaque = s; | |
1292 | chr->chr_add_watch = fd_chr_add_watch; | |
1293 | chr->chr_write = fd_chr_write; | |
1294 | chr->chr_update_read_handler = fd_chr_update_read_handler; | |
1295 | chr->chr_free = fd_chr_free; | |
1296 | ||
1297 | return chr; | |
1298 | } | |
1299 | ||
1300 | static CharDriverState *qemu_chr_open_pipe(const char *id, | |
1301 | ChardevBackend *backend, | |
1302 | ChardevReturn *ret, | |
1303 | bool *be_opened, | |
1304 | Error **errp) | |
1305 | { | |
1306 | ChardevHostdev *opts = backend->u.pipe.data; | |
1307 | int fd_in, fd_out; | |
1308 | char *filename_in; | |
1309 | char *filename_out; | |
1310 | const char *filename = opts->device; | |
1311 | ChardevCommon *common = qapi_ChardevHostdev_base(opts); | |
1312 | ||
1313 | ||
1314 | filename_in = g_strdup_printf("%s.in", filename); | |
1315 | filename_out = g_strdup_printf("%s.out", filename); | |
1316 | TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY)); | |
1317 | TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY)); | |
1318 | g_free(filename_in); | |
1319 | g_free(filename_out); | |
1320 | if (fd_in < 0 || fd_out < 0) { | |
1321 | if (fd_in >= 0) | |
1322 | close(fd_in); | |
1323 | if (fd_out >= 0) | |
1324 | close(fd_out); | |
1325 | TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY)); | |
1326 | if (fd_in < 0) { | |
1327 | error_setg_file_open(errp, errno, filename); | |
1328 | return NULL; | |
1329 | } | |
1330 | } | |
1331 | return qemu_chr_open_fd(fd_in, fd_out, common, errp); | |
1332 | } | |
1333 | ||
1334 | /* init terminal so that we can grab keys */ | |
1335 | static struct termios oldtty; | |
1336 | static int old_fd0_flags; | |
1337 | static bool stdio_in_use; | |
1338 | static bool stdio_allow_signal; | |
1339 | static bool stdio_echo_state; | |
1340 | ||
1341 | static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo); | |
1342 | ||
1343 | static void term_exit(void) | |
1344 | { | |
1345 | tcsetattr (0, TCSANOW, &oldtty); | |
1346 | fcntl(0, F_SETFL, old_fd0_flags); | |
1347 | } | |
1348 | ||
1349 | static void term_stdio_handler(int sig) | |
1350 | { | |
1351 | /* restore echo after resume from suspend. */ | |
1352 | qemu_chr_set_echo_stdio(NULL, stdio_echo_state); | |
1353 | } | |
1354 | ||
1355 | static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo) | |
1356 | { | |
1357 | struct termios tty; | |
1358 | ||
1359 | stdio_echo_state = echo; | |
1360 | tty = oldtty; | |
1361 | if (!echo) { | |
1362 | tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP | |
1363 | |INLCR|IGNCR|ICRNL|IXON); | |
1364 | tty.c_oflag |= OPOST; | |
1365 | tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN); | |
1366 | tty.c_cflag &= ~(CSIZE|PARENB); | |
1367 | tty.c_cflag |= CS8; | |
1368 | tty.c_cc[VMIN] = 1; | |
1369 | tty.c_cc[VTIME] = 0; | |
1370 | } | |
1371 | if (!stdio_allow_signal) | |
1372 | tty.c_lflag &= ~ISIG; | |
1373 | ||
1374 | tcsetattr (0, TCSANOW, &tty); | |
1375 | } | |
1376 | ||
1377 | static void qemu_chr_free_stdio(struct CharDriverState *chr) | |
1378 | { | |
1379 | term_exit(); | |
1380 | fd_chr_free(chr); | |
1381 | } | |
1382 | ||
1383 | static CharDriverState *qemu_chr_open_stdio(const char *id, | |
1384 | ChardevBackend *backend, | |
1385 | ChardevReturn *ret, | |
1386 | bool *be_opened, | |
1387 | Error **errp) | |
1388 | { | |
1389 | ChardevStdio *opts = backend->u.stdio.data; | |
1390 | CharDriverState *chr; | |
1391 | struct sigaction act; | |
1392 | ChardevCommon *common = qapi_ChardevStdio_base(opts); | |
1393 | ||
1394 | if (is_daemonized()) { | |
1395 | error_setg(errp, "cannot use stdio with -daemonize"); | |
1396 | return NULL; | |
1397 | } | |
1398 | ||
1399 | if (stdio_in_use) { | |
1400 | error_setg(errp, "cannot use stdio by multiple character devices"); | |
1401 | return NULL; | |
1402 | } | |
1403 | ||
1404 | stdio_in_use = true; | |
1405 | old_fd0_flags = fcntl(0, F_GETFL); | |
1406 | tcgetattr(0, &oldtty); | |
1407 | qemu_set_nonblock(0); | |
1408 | atexit(term_exit); | |
1409 | ||
1410 | memset(&act, 0, sizeof(act)); | |
1411 | act.sa_handler = term_stdio_handler; | |
1412 | sigaction(SIGCONT, &act, NULL); | |
1413 | ||
1414 | chr = qemu_chr_open_fd(0, 1, common, errp); | |
1415 | if (!chr) { | |
1416 | return NULL; | |
1417 | } | |
1418 | chr->chr_free = qemu_chr_free_stdio; | |
1419 | chr->chr_set_echo = qemu_chr_set_echo_stdio; | |
1420 | if (opts->has_signal) { | |
1421 | stdio_allow_signal = opts->signal; | |
1422 | } | |
1423 | qemu_chr_set_echo_stdio(chr, false); | |
1424 | ||
1425 | return chr; | |
1426 | } | |
1427 | ||
1428 | #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \ | |
1429 | || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \ | |
1430 | || defined(__GLIBC__) | |
1431 | ||
1432 | #define HAVE_CHARDEV_SERIAL 1 | |
1433 | #define HAVE_CHARDEV_PTY 1 | |
1434 | ||
1435 | typedef struct { | |
1436 | QIOChannel *ioc; | |
1437 | int read_bytes; | |
1438 | ||
1439 | /* Protected by the CharDriverState chr_write_lock. */ | |
1440 | int connected; | |
1441 | guint timer_tag; | |
1442 | guint open_tag; | |
1443 | } PtyCharDriver; | |
1444 | ||
1445 | static void pty_chr_update_read_handler_locked(CharDriverState *chr); | |
1446 | static void pty_chr_state(CharDriverState *chr, int connected); | |
1447 | ||
1448 | static gboolean pty_chr_timer(gpointer opaque) | |
1449 | { | |
1450 | struct CharDriverState *chr = opaque; | |
1451 | PtyCharDriver *s = chr->opaque; | |
1452 | ||
1453 | qemu_mutex_lock(&chr->chr_write_lock); | |
1454 | s->timer_tag = 0; | |
1455 | s->open_tag = 0; | |
1456 | if (!s->connected) { | |
1457 | /* Next poll ... */ | |
1458 | pty_chr_update_read_handler_locked(chr); | |
1459 | } | |
1460 | qemu_mutex_unlock(&chr->chr_write_lock); | |
1461 | return FALSE; | |
1462 | } | |
1463 | ||
1464 | /* Called with chr_write_lock held. */ | |
1465 | static void pty_chr_rearm_timer(CharDriverState *chr, int ms) | |
1466 | { | |
1467 | PtyCharDriver *s = chr->opaque; | |
1468 | char *name; | |
1469 | ||
1470 | if (s->timer_tag) { | |
1471 | g_source_remove(s->timer_tag); | |
1472 | s->timer_tag = 0; | |
1473 | } | |
1474 | ||
1475 | if (ms == 1000) { | |
1476 | name = g_strdup_printf("pty-timer-secs-%s", chr->label); | |
1477 | s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr); | |
1478 | } else { | |
1479 | name = g_strdup_printf("pty-timer-ms-%s", chr->label); | |
1480 | s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr); | |
1481 | } | |
1482 | g_source_set_name_by_id(s->timer_tag, name); | |
1483 | g_free(name); | |
1484 | } | |
1485 | ||
1486 | /* Called with chr_write_lock held. */ | |
1487 | static void pty_chr_update_read_handler_locked(CharDriverState *chr) | |
1488 | { | |
1489 | PtyCharDriver *s = chr->opaque; | |
1490 | GPollFD pfd; | |
1491 | int rc; | |
1492 | QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc); | |
1493 | ||
1494 | pfd.fd = fioc->fd; | |
1495 | pfd.events = G_IO_OUT; | |
1496 | pfd.revents = 0; | |
1497 | do { | |
1498 | rc = g_poll(&pfd, 1, 0); | |
1499 | } while (rc == -1 && errno == EINTR); | |
1500 | assert(rc >= 0); | |
1501 | ||
1502 | if (pfd.revents & G_IO_HUP) { | |
1503 | pty_chr_state(chr, 0); | |
1504 | } else { | |
1505 | pty_chr_state(chr, 1); | |
1506 | } | |
1507 | } | |
1508 | ||
1509 | static void pty_chr_update_read_handler(CharDriverState *chr, | |
1510 | GMainContext *context) | |
1511 | { | |
1512 | qemu_mutex_lock(&chr->chr_write_lock); | |
1513 | pty_chr_update_read_handler_locked(chr); | |
1514 | qemu_mutex_unlock(&chr->chr_write_lock); | |
1515 | } | |
1516 | ||
1517 | /* Called with chr_write_lock held. */ | |
1518 | static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len) | |
1519 | { | |
1520 | PtyCharDriver *s = chr->opaque; | |
1521 | ||
1522 | if (!s->connected) { | |
1523 | /* guest sends data, check for (re-)connect */ | |
1524 | pty_chr_update_read_handler_locked(chr); | |
1525 | if (!s->connected) { | |
1526 | return 0; | |
1527 | } | |
1528 | } | |
1529 | return io_channel_send(s->ioc, buf, len); | |
1530 | } | |
1531 | ||
1532 | static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond) | |
1533 | { | |
1534 | PtyCharDriver *s = chr->opaque; | |
1535 | if (!s->connected) { | |
1536 | return NULL; | |
1537 | } | |
1538 | return qio_channel_create_watch(s->ioc, cond); | |
1539 | } | |
1540 | ||
1541 | static int pty_chr_read_poll(void *opaque) | |
1542 | { | |
1543 | CharDriverState *chr = opaque; | |
1544 | PtyCharDriver *s = chr->opaque; | |
1545 | ||
1546 | s->read_bytes = qemu_chr_be_can_write(chr); | |
1547 | return s->read_bytes; | |
1548 | } | |
1549 | ||
1550 | static gboolean pty_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque) | |
1551 | { | |
1552 | CharDriverState *chr = opaque; | |
1553 | PtyCharDriver *s = chr->opaque; | |
1554 | gsize len; | |
1555 | uint8_t buf[READ_BUF_LEN]; | |
1556 | ssize_t ret; | |
1557 | ||
1558 | len = sizeof(buf); | |
1559 | if (len > s->read_bytes) | |
1560 | len = s->read_bytes; | |
1561 | if (len == 0) { | |
1562 | return TRUE; | |
1563 | } | |
1564 | ret = qio_channel_read(s->ioc, (char *)buf, len, NULL); | |
1565 | if (ret <= 0) { | |
1566 | pty_chr_state(chr, 0); | |
1567 | return FALSE; | |
1568 | } else { | |
1569 | pty_chr_state(chr, 1); | |
1570 | qemu_chr_be_write(chr, buf, ret); | |
1571 | } | |
1572 | return TRUE; | |
1573 | } | |
1574 | ||
1575 | static gboolean qemu_chr_be_generic_open_func(gpointer opaque) | |
1576 | { | |
1577 | CharDriverState *chr = opaque; | |
1578 | PtyCharDriver *s = chr->opaque; | |
1579 | ||
1580 | s->open_tag = 0; | |
1581 | qemu_chr_be_generic_open(chr); | |
1582 | return FALSE; | |
1583 | } | |
1584 | ||
1585 | /* Called with chr_write_lock held. */ | |
1586 | static void pty_chr_state(CharDriverState *chr, int connected) | |
1587 | { | |
1588 | PtyCharDriver *s = chr->opaque; | |
1589 | ||
1590 | if (!connected) { | |
1591 | if (s->open_tag) { | |
1592 | g_source_remove(s->open_tag); | |
1593 | s->open_tag = 0; | |
1594 | } | |
1595 | remove_fd_in_watch(chr); | |
1596 | s->connected = 0; | |
1597 | /* (re-)connect poll interval for idle guests: once per second. | |
1598 | * We check more frequently in case the guests sends data to | |
1599 | * the virtual device linked to our pty. */ | |
1600 | pty_chr_rearm_timer(chr, 1000); | |
1601 | } else { | |
1602 | if (s->timer_tag) { | |
1603 | g_source_remove(s->timer_tag); | |
1604 | s->timer_tag = 0; | |
1605 | } | |
1606 | if (!s->connected) { | |
1607 | g_assert(s->open_tag == 0); | |
1608 | s->connected = 1; | |
1609 | s->open_tag = g_idle_add(qemu_chr_be_generic_open_func, chr); | |
1610 | } | |
1611 | if (!chr->fd_in_tag) { | |
1612 | chr->fd_in_tag = io_add_watch_poll(chr, s->ioc, | |
1613 | pty_chr_read_poll, | |
1614 | pty_chr_read, | |
1615 | chr, NULL); | |
1616 | } | |
1617 | } | |
1618 | } | |
1619 | ||
1620 | static void pty_chr_free(struct CharDriverState *chr) | |
1621 | { | |
1622 | PtyCharDriver *s = chr->opaque; | |
1623 | ||
1624 | qemu_mutex_lock(&chr->chr_write_lock); | |
1625 | pty_chr_state(chr, 0); | |
1626 | object_unref(OBJECT(s->ioc)); | |
1627 | if (s->timer_tag) { | |
1628 | g_source_remove(s->timer_tag); | |
1629 | s->timer_tag = 0; | |
1630 | } | |
1631 | qemu_mutex_unlock(&chr->chr_write_lock); | |
1632 | g_free(s); | |
1633 | qemu_chr_be_event(chr, CHR_EVENT_CLOSED); | |
1634 | } | |
1635 | ||
1636 | static CharDriverState *qemu_chr_open_pty(const char *id, | |
1637 | ChardevBackend *backend, | |
1638 | ChardevReturn *ret, | |
1639 | bool *be_opened, | |
1640 | Error **errp) | |
1641 | { | |
1642 | CharDriverState *chr; | |
1643 | PtyCharDriver *s; | |
1644 | int master_fd, slave_fd; | |
1645 | char pty_name[PATH_MAX]; | |
1646 | ChardevCommon *common = backend->u.pty.data; | |
1647 | char *name; | |
1648 | ||
1649 | master_fd = qemu_openpty_raw(&slave_fd, pty_name); | |
1650 | if (master_fd < 0) { | |
1651 | error_setg_errno(errp, errno, "Failed to create PTY"); | |
1652 | return NULL; | |
1653 | } | |
1654 | ||
1655 | close(slave_fd); | |
1656 | qemu_set_nonblock(master_fd); | |
1657 | ||
1658 | chr = qemu_chr_alloc(common, errp); | |
1659 | if (!chr) { | |
1660 | close(master_fd); | |
1661 | return NULL; | |
1662 | } | |
1663 | ||
1664 | chr->filename = g_strdup_printf("pty:%s", pty_name); | |
1665 | ret->pty = g_strdup(pty_name); | |
1666 | ret->has_pty = true; | |
1667 | ||
1668 | fprintf(stderr, "char device redirected to %s (label %s)\n", | |
1669 | pty_name, id); | |
1670 | ||
1671 | s = g_new0(PtyCharDriver, 1); | |
1672 | chr->opaque = s; | |
1673 | chr->chr_write = pty_chr_write; | |
1674 | chr->chr_update_read_handler = pty_chr_update_read_handler; | |
1675 | chr->chr_free = pty_chr_free; | |
1676 | chr->chr_add_watch = pty_chr_add_watch; | |
1677 | *be_opened = false; | |
1678 | ||
1679 | s->ioc = QIO_CHANNEL(qio_channel_file_new_fd(master_fd)); | |
1680 | name = g_strdup_printf("chardev-pty-%s", chr->label); | |
1681 | qio_channel_set_name(QIO_CHANNEL(s->ioc), name); | |
1682 | g_free(name); | |
1683 | s->timer_tag = 0; | |
1684 | ||
1685 | return chr; | |
1686 | } | |
1687 | ||
1688 | static void tty_serial_init(int fd, int speed, | |
1689 | int parity, int data_bits, int stop_bits) | |
1690 | { | |
1691 | struct termios tty; | |
1692 | speed_t spd; | |
1693 | ||
1694 | #if 0 | |
1695 | printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n", | |
1696 | speed, parity, data_bits, stop_bits); | |
1697 | #endif | |
1698 | tcgetattr (fd, &tty); | |
1699 | ||
1700 | #define check_speed(val) if (speed <= val) { spd = B##val; break; } | |
1701 | speed = speed * 10 / 11; | |
1702 | do { | |
1703 | check_speed(50); | |
1704 | check_speed(75); | |
1705 | check_speed(110); | |
1706 | check_speed(134); | |
1707 | check_speed(150); | |
1708 | check_speed(200); | |
1709 | check_speed(300); | |
1710 | check_speed(600); | |
1711 | check_speed(1200); | |
1712 | check_speed(1800); | |
1713 | check_speed(2400); | |
1714 | check_speed(4800); | |
1715 | check_speed(9600); | |
1716 | check_speed(19200); | |
1717 | check_speed(38400); | |
1718 | /* Non-Posix values follow. They may be unsupported on some systems. */ | |
1719 | check_speed(57600); | |
1720 | check_speed(115200); | |
1721 | #ifdef B230400 | |
1722 | check_speed(230400); | |
1723 | #endif | |
1724 | #ifdef B460800 | |
1725 | check_speed(460800); | |
1726 | #endif | |
1727 | #ifdef B500000 | |
1728 | check_speed(500000); | |
1729 | #endif | |
1730 | #ifdef B576000 | |
1731 | check_speed(576000); | |
1732 | #endif | |
1733 | #ifdef B921600 | |
1734 | check_speed(921600); | |
1735 | #endif | |
1736 | #ifdef B1000000 | |
1737 | check_speed(1000000); | |
1738 | #endif | |
1739 | #ifdef B1152000 | |
1740 | check_speed(1152000); | |
1741 | #endif | |
1742 | #ifdef B1500000 | |
1743 | check_speed(1500000); | |
1744 | #endif | |
1745 | #ifdef B2000000 | |
1746 | check_speed(2000000); | |
1747 | #endif | |
1748 | #ifdef B2500000 | |
1749 | check_speed(2500000); | |
1750 | #endif | |
1751 | #ifdef B3000000 | |
1752 | check_speed(3000000); | |
1753 | #endif | |
1754 | #ifdef B3500000 | |
1755 | check_speed(3500000); | |
1756 | #endif | |
1757 | #ifdef B4000000 | |
1758 | check_speed(4000000); | |
1759 | #endif | |
1760 | spd = B115200; | |
1761 | } while (0); | |
1762 | ||
1763 | cfsetispeed(&tty, spd); | |
1764 | cfsetospeed(&tty, spd); | |
1765 | ||
1766 | tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP | |
1767 | |INLCR|IGNCR|ICRNL|IXON); | |
1768 | tty.c_oflag |= OPOST; | |
1769 | tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG); | |
1770 | tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB); | |
1771 | switch(data_bits) { | |
1772 | default: | |
1773 | case 8: | |
1774 | tty.c_cflag |= CS8; | |
1775 | break; | |
1776 | case 7: | |
1777 | tty.c_cflag |= CS7; | |
1778 | break; | |
1779 | case 6: | |
1780 | tty.c_cflag |= CS6; | |
1781 | break; | |
1782 | case 5: | |
1783 | tty.c_cflag |= CS5; | |
1784 | break; | |
1785 | } | |
1786 | switch(parity) { | |
1787 | default: | |
1788 | case 'N': | |
1789 | break; | |
1790 | case 'E': | |
1791 | tty.c_cflag |= PARENB; | |
1792 | break; | |
1793 | case 'O': | |
1794 | tty.c_cflag |= PARENB | PARODD; | |
1795 | break; | |
1796 | } | |
1797 | if (stop_bits == 2) | |
1798 | tty.c_cflag |= CSTOPB; | |
1799 | ||
1800 | tcsetattr (fd, TCSANOW, &tty); | |
1801 | } | |
1802 | ||
1803 | static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg) | |
1804 | { | |
1805 | FDCharDriver *s = chr->opaque; | |
1806 | QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc_in); | |
1807 | ||
1808 | switch(cmd) { | |
1809 | case CHR_IOCTL_SERIAL_SET_PARAMS: | |
1810 | { | |
1811 | QEMUSerialSetParams *ssp = arg; | |
1812 | tty_serial_init(fioc->fd, | |
1813 | ssp->speed, ssp->parity, | |
1814 | ssp->data_bits, ssp->stop_bits); | |
1815 | } | |
1816 | break; | |
1817 | case CHR_IOCTL_SERIAL_SET_BREAK: | |
1818 | { | |
1819 | int enable = *(int *)arg; | |
1820 | if (enable) { | |
1821 | tcsendbreak(fioc->fd, 1); | |
1822 | } | |
1823 | } | |
1824 | break; | |
1825 | case CHR_IOCTL_SERIAL_GET_TIOCM: | |
1826 | { | |
1827 | int sarg = 0; | |
1828 | int *targ = (int *)arg; | |
1829 | ioctl(fioc->fd, TIOCMGET, &sarg); | |
1830 | *targ = 0; | |
1831 | if (sarg & TIOCM_CTS) | |
1832 | *targ |= CHR_TIOCM_CTS; | |
1833 | if (sarg & TIOCM_CAR) | |
1834 | *targ |= CHR_TIOCM_CAR; | |
1835 | if (sarg & TIOCM_DSR) | |
1836 | *targ |= CHR_TIOCM_DSR; | |
1837 | if (sarg & TIOCM_RI) | |
1838 | *targ |= CHR_TIOCM_RI; | |
1839 | if (sarg & TIOCM_DTR) | |
1840 | *targ |= CHR_TIOCM_DTR; | |
1841 | if (sarg & TIOCM_RTS) | |
1842 | *targ |= CHR_TIOCM_RTS; | |
1843 | } | |
1844 | break; | |
1845 | case CHR_IOCTL_SERIAL_SET_TIOCM: | |
1846 | { | |
1847 | int sarg = *(int *)arg; | |
1848 | int targ = 0; | |
1849 | ioctl(fioc->fd, TIOCMGET, &targ); | |
1850 | targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR | |
1851 | | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS); | |
1852 | if (sarg & CHR_TIOCM_CTS) | |
1853 | targ |= TIOCM_CTS; | |
1854 | if (sarg & CHR_TIOCM_CAR) | |
1855 | targ |= TIOCM_CAR; | |
1856 | if (sarg & CHR_TIOCM_DSR) | |
1857 | targ |= TIOCM_DSR; | |
1858 | if (sarg & CHR_TIOCM_RI) | |
1859 | targ |= TIOCM_RI; | |
1860 | if (sarg & CHR_TIOCM_DTR) | |
1861 | targ |= TIOCM_DTR; | |
1862 | if (sarg & CHR_TIOCM_RTS) | |
1863 | targ |= TIOCM_RTS; | |
1864 | ioctl(fioc->fd, TIOCMSET, &targ); | |
1865 | } | |
1866 | break; | |
1867 | default: | |
1868 | return -ENOTSUP; | |
1869 | } | |
1870 | return 0; | |
1871 | } | |
1872 | ||
1873 | static void qemu_chr_free_tty(CharDriverState *chr) | |
1874 | { | |
1875 | fd_chr_free(chr); | |
1876 | } | |
1877 | ||
1878 | static CharDriverState *qemu_chr_open_tty_fd(int fd, | |
1879 | ChardevCommon *backend, | |
1880 | bool *be_opened, | |
1881 | Error **errp) | |
1882 | { | |
1883 | CharDriverState *chr; | |
1884 | ||
1885 | tty_serial_init(fd, 115200, 'N', 8, 1); | |
1886 | chr = qemu_chr_open_fd(fd, fd, backend, errp); | |
1887 | if (!chr) { | |
1888 | return NULL; | |
1889 | } | |
1890 | chr->chr_ioctl = tty_serial_ioctl; | |
1891 | chr->chr_free = qemu_chr_free_tty; | |
1892 | return chr; | |
1893 | } | |
1894 | #endif /* __linux__ || __sun__ */ | |
1895 | ||
1896 | #if defined(__linux__) | |
1897 | ||
1898 | #define HAVE_CHARDEV_PARPORT 1 | |
1899 | ||
1900 | typedef struct { | |
1901 | int fd; | |
1902 | int mode; | |
1903 | } ParallelCharDriver; | |
1904 | ||
1905 | static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode) | |
1906 | { | |
1907 | if (s->mode != mode) { | |
1908 | int m = mode; | |
1909 | if (ioctl(s->fd, PPSETMODE, &m) < 0) | |
1910 | return 0; | |
1911 | s->mode = mode; | |
1912 | } | |
1913 | return 1; | |
1914 | } | |
1915 | ||
1916 | static int pp_ioctl(CharDriverState *chr, int cmd, void *arg) | |
1917 | { | |
1918 | ParallelCharDriver *drv = chr->opaque; | |
1919 | int fd = drv->fd; | |
1920 | uint8_t b; | |
1921 | ||
1922 | switch(cmd) { | |
1923 | case CHR_IOCTL_PP_READ_DATA: | |
1924 | if (ioctl(fd, PPRDATA, &b) < 0) | |
1925 | return -ENOTSUP; | |
1926 | *(uint8_t *)arg = b; | |
1927 | break; | |
1928 | case CHR_IOCTL_PP_WRITE_DATA: | |
1929 | b = *(uint8_t *)arg; | |
1930 | if (ioctl(fd, PPWDATA, &b) < 0) | |
1931 | return -ENOTSUP; | |
1932 | break; | |
1933 | case CHR_IOCTL_PP_READ_CONTROL: | |
1934 | if (ioctl(fd, PPRCONTROL, &b) < 0) | |
1935 | return -ENOTSUP; | |
1936 | /* Linux gives only the lowest bits, and no way to know data | |
1937 | direction! For better compatibility set the fixed upper | |
1938 | bits. */ | |
1939 | *(uint8_t *)arg = b | 0xc0; | |
1940 | break; | |
1941 | case CHR_IOCTL_PP_WRITE_CONTROL: | |
1942 | b = *(uint8_t *)arg; | |
1943 | if (ioctl(fd, PPWCONTROL, &b) < 0) | |
1944 | return -ENOTSUP; | |
1945 | break; | |
1946 | case CHR_IOCTL_PP_READ_STATUS: | |
1947 | if (ioctl(fd, PPRSTATUS, &b) < 0) | |
1948 | return -ENOTSUP; | |
1949 | *(uint8_t *)arg = b; | |
1950 | break; | |
1951 | case CHR_IOCTL_PP_DATA_DIR: | |
1952 | if (ioctl(fd, PPDATADIR, (int *)arg) < 0) | |
1953 | return -ENOTSUP; | |
1954 | break; | |
1955 | case CHR_IOCTL_PP_EPP_READ_ADDR: | |
1956 | if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) { | |
1957 | struct ParallelIOArg *parg = arg; | |
1958 | int n = read(fd, parg->buffer, parg->count); | |
1959 | if (n != parg->count) { | |
1960 | return -EIO; | |
1961 | } | |
1962 | } | |
1963 | break; | |
1964 | case CHR_IOCTL_PP_EPP_READ: | |
1965 | if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) { | |
1966 | struct ParallelIOArg *parg = arg; | |
1967 | int n = read(fd, parg->buffer, parg->count); | |
1968 | if (n != parg->count) { | |
1969 | return -EIO; | |
1970 | } | |
1971 | } | |
1972 | break; | |
1973 | case CHR_IOCTL_PP_EPP_WRITE_ADDR: | |
1974 | if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) { | |
1975 | struct ParallelIOArg *parg = arg; | |
1976 | int n = write(fd, parg->buffer, parg->count); | |
1977 | if (n != parg->count) { | |
1978 | return -EIO; | |
1979 | } | |
1980 | } | |
1981 | break; | |
1982 | case CHR_IOCTL_PP_EPP_WRITE: | |
1983 | if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) { | |
1984 | struct ParallelIOArg *parg = arg; | |
1985 | int n = write(fd, parg->buffer, parg->count); | |
1986 | if (n != parg->count) { | |
1987 | return -EIO; | |
1988 | } | |
1989 | } | |
1990 | break; | |
1991 | default: | |
1992 | return -ENOTSUP; | |
1993 | } | |
1994 | return 0; | |
1995 | } | |
1996 | ||
1997 | static void pp_free(CharDriverState *chr) | |
1998 | { | |
1999 | ParallelCharDriver *drv = chr->opaque; | |
2000 | int fd = drv->fd; | |
2001 | ||
2002 | pp_hw_mode(drv, IEEE1284_MODE_COMPAT); | |
2003 | ioctl(fd, PPRELEASE); | |
2004 | close(fd); | |
2005 | g_free(drv); | |
2006 | qemu_chr_be_event(chr, CHR_EVENT_CLOSED); | |
2007 | } | |
2008 | ||
2009 | static CharDriverState *qemu_chr_open_pp_fd(int fd, | |
2010 | ChardevCommon *backend, | |
2011 | bool *be_opened, | |
2012 | Error **errp) | |
2013 | { | |
2014 | CharDriverState *chr; | |
2015 | ParallelCharDriver *drv; | |
2016 | ||
2017 | if (ioctl(fd, PPCLAIM) < 0) { | |
2018 | error_setg_errno(errp, errno, "not a parallel port"); | |
2019 | close(fd); | |
2020 | return NULL; | |
2021 | } | |
2022 | ||
2023 | chr = qemu_chr_alloc(backend, errp); | |
2024 | if (!chr) { | |
2025 | return NULL; | |
2026 | } | |
2027 | ||
2028 | drv = g_new0(ParallelCharDriver, 1); | |
2029 | chr->opaque = drv; | |
2030 | chr->chr_write = null_chr_write; | |
2031 | chr->chr_ioctl = pp_ioctl; | |
2032 | chr->chr_free = pp_free; | |
2033 | ||
2034 | drv->fd = fd; | |
2035 | drv->mode = IEEE1284_MODE_COMPAT; | |
2036 | ||
2037 | return chr; | |
2038 | } | |
2039 | #endif /* __linux__ */ | |
2040 | ||
2041 | #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__) | |
2042 | ||
2043 | #define HAVE_CHARDEV_PARPORT 1 | |
2044 | ||
2045 | static int pp_ioctl(CharDriverState *chr, int cmd, void *arg) | |
2046 | { | |
2047 | int fd = (int)(intptr_t)chr->opaque; | |
2048 | uint8_t b; | |
2049 | ||
2050 | switch(cmd) { | |
2051 | case CHR_IOCTL_PP_READ_DATA: | |
2052 | if (ioctl(fd, PPIGDATA, &b) < 0) | |
2053 | return -ENOTSUP; | |
2054 | *(uint8_t *)arg = b; | |
2055 | break; | |
2056 | case CHR_IOCTL_PP_WRITE_DATA: | |
2057 | b = *(uint8_t *)arg; | |
2058 | if (ioctl(fd, PPISDATA, &b) < 0) | |
2059 | return -ENOTSUP; | |
2060 | break; | |
2061 | case CHR_IOCTL_PP_READ_CONTROL: | |
2062 | if (ioctl(fd, PPIGCTRL, &b) < 0) | |
2063 | return -ENOTSUP; | |
2064 | *(uint8_t *)arg = b; | |
2065 | break; | |
2066 | case CHR_IOCTL_PP_WRITE_CONTROL: | |
2067 | b = *(uint8_t *)arg; | |
2068 | if (ioctl(fd, PPISCTRL, &b) < 0) | |
2069 | return -ENOTSUP; | |
2070 | break; | |
2071 | case CHR_IOCTL_PP_READ_STATUS: | |
2072 | if (ioctl(fd, PPIGSTATUS, &b) < 0) | |
2073 | return -ENOTSUP; | |
2074 | *(uint8_t *)arg = b; | |
2075 | break; | |
2076 | default: | |
2077 | return -ENOTSUP; | |
2078 | } | |
2079 | return 0; | |
2080 | } | |
2081 | ||
2082 | static CharDriverState *qemu_chr_open_pp_fd(int fd, | |
2083 | ChardevCommon *backend, | |
2084 | bool *be_opened, | |
2085 | Error **errp) | |
2086 | { | |
2087 | CharDriverState *chr; | |
2088 | ||
2089 | chr = qemu_chr_alloc(backend, errp); | |
2090 | if (!chr) { | |
2091 | return NULL; | |
2092 | } | |
2093 | chr->opaque = (void *)(intptr_t)fd; | |
2094 | chr->chr_write = null_chr_write; | |
2095 | chr->chr_ioctl = pp_ioctl; | |
2096 | *be_opened = false; | |
2097 | return chr; | |
2098 | } | |
2099 | #endif | |
2100 | ||
2101 | #else /* _WIN32 */ | |
2102 | ||
2103 | #define HAVE_CHARDEV_SERIAL 1 | |
2104 | ||
2105 | typedef struct { | |
2106 | int max_size; | |
2107 | HANDLE hcom, hrecv, hsend; | |
2108 | OVERLAPPED orecv; | |
2109 | BOOL fpipe; | |
2110 | DWORD len; | |
2111 | ||
2112 | /* Protected by the CharDriverState chr_write_lock. */ | |
2113 | OVERLAPPED osend; | |
2114 | } WinCharState; | |
2115 | ||
2116 | typedef struct { | |
2117 | HANDLE hStdIn; | |
2118 | HANDLE hInputReadyEvent; | |
2119 | HANDLE hInputDoneEvent; | |
2120 | HANDLE hInputThread; | |
2121 | uint8_t win_stdio_buf; | |
2122 | } WinStdioCharState; | |
2123 | ||
2124 | #define NSENDBUF 2048 | |
2125 | #define NRECVBUF 2048 | |
2126 | #define MAXCONNECT 1 | |
2127 | #define NTIMEOUT 5000 | |
2128 | ||
2129 | static int win_chr_poll(void *opaque); | |
2130 | static int win_chr_pipe_poll(void *opaque); | |
2131 | ||
2132 | static void win_chr_free(CharDriverState *chr) | |
2133 | { | |
2134 | WinCharState *s = chr->opaque; | |
2135 | ||
2136 | if (s->hsend) { | |
2137 | CloseHandle(s->hsend); | |
2138 | s->hsend = NULL; | |
2139 | } | |
2140 | if (s->hrecv) { | |
2141 | CloseHandle(s->hrecv); | |
2142 | s->hrecv = NULL; | |
2143 | } | |
2144 | if (s->hcom) { | |
2145 | CloseHandle(s->hcom); | |
2146 | s->hcom = NULL; | |
2147 | } | |
2148 | if (s->fpipe) | |
2149 | qemu_del_polling_cb(win_chr_pipe_poll, chr); | |
2150 | else | |
2151 | qemu_del_polling_cb(win_chr_poll, chr); | |
2152 | ||
2153 | qemu_chr_be_event(chr, CHR_EVENT_CLOSED); | |
2154 | } | |
2155 | ||
2156 | static int win_chr_init(CharDriverState *chr, const char *filename, Error **errp) | |
2157 | { | |
2158 | WinCharState *s = chr->opaque; | |
2159 | COMMCONFIG comcfg; | |
2160 | COMMTIMEOUTS cto = { 0, 0, 0, 0, 0}; | |
2161 | COMSTAT comstat; | |
2162 | DWORD size; | |
2163 | DWORD err; | |
2164 | ||
2165 | s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL); | |
2166 | if (!s->hsend) { | |
2167 | error_setg(errp, "Failed CreateEvent"); | |
2168 | goto fail; | |
2169 | } | |
2170 | s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL); | |
2171 | if (!s->hrecv) { | |
2172 | error_setg(errp, "Failed CreateEvent"); | |
2173 | goto fail; | |
2174 | } | |
2175 | ||
2176 | s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL, | |
2177 | OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0); | |
2178 | if (s->hcom == INVALID_HANDLE_VALUE) { | |
2179 | error_setg(errp, "Failed CreateFile (%lu)", GetLastError()); | |
2180 | s->hcom = NULL; | |
2181 | goto fail; | |
2182 | } | |
2183 | ||
2184 | if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) { | |
2185 | error_setg(errp, "Failed SetupComm"); | |
2186 | goto fail; | |
2187 | } | |
2188 | ||
2189 | ZeroMemory(&comcfg, sizeof(COMMCONFIG)); | |
2190 | size = sizeof(COMMCONFIG); | |
2191 | GetDefaultCommConfig(filename, &comcfg, &size); | |
2192 | comcfg.dcb.DCBlength = sizeof(DCB); | |
2193 | CommConfigDialog(filename, NULL, &comcfg); | |
2194 | ||
2195 | if (!SetCommState(s->hcom, &comcfg.dcb)) { | |
2196 | error_setg(errp, "Failed SetCommState"); | |
2197 | goto fail; | |
2198 | } | |
2199 | ||
2200 | if (!SetCommMask(s->hcom, EV_ERR)) { | |
2201 | error_setg(errp, "Failed SetCommMask"); | |
2202 | goto fail; | |
2203 | } | |
2204 | ||
2205 | cto.ReadIntervalTimeout = MAXDWORD; | |
2206 | if (!SetCommTimeouts(s->hcom, &cto)) { | |
2207 | error_setg(errp, "Failed SetCommTimeouts"); | |
2208 | goto fail; | |
2209 | } | |
2210 | ||
2211 | if (!ClearCommError(s->hcom, &err, &comstat)) { | |
2212 | error_setg(errp, "Failed ClearCommError"); | |
2213 | goto fail; | |
2214 | } | |
2215 | qemu_add_polling_cb(win_chr_poll, chr); | |
2216 | return 0; | |
2217 | ||
2218 | fail: | |
2219 | win_chr_free(chr); | |
2220 | return -1; | |
2221 | } | |
2222 | ||
2223 | /* Called with chr_write_lock held. */ | |
2224 | static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1) | |
2225 | { | |
2226 | WinCharState *s = chr->opaque; | |
2227 | DWORD len, ret, size, err; | |
2228 | ||
2229 | len = len1; | |
2230 | ZeroMemory(&s->osend, sizeof(s->osend)); | |
2231 | s->osend.hEvent = s->hsend; | |
2232 | while (len > 0) { | |
2233 | if (s->hsend) | |
2234 | ret = WriteFile(s->hcom, buf, len, &size, &s->osend); | |
2235 | else | |
2236 | ret = WriteFile(s->hcom, buf, len, &size, NULL); | |
2237 | if (!ret) { | |
2238 | err = GetLastError(); | |
2239 | if (err == ERROR_IO_PENDING) { | |
2240 | ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE); | |
2241 | if (ret) { | |
2242 | buf += size; | |
2243 | len -= size; | |
2244 | } else { | |
2245 | break; | |
2246 | } | |
2247 | } else { | |
2248 | break; | |
2249 | } | |
2250 | } else { | |
2251 | buf += size; | |
2252 | len -= size; | |
2253 | } | |
2254 | } | |
2255 | return len1 - len; | |
2256 | } | |
2257 | ||
2258 | static int win_chr_read_poll(CharDriverState *chr) | |
2259 | { | |
2260 | WinCharState *s = chr->opaque; | |
2261 | ||
2262 | s->max_size = qemu_chr_be_can_write(chr); | |
2263 | return s->max_size; | |
2264 | } | |
2265 | ||
2266 | static void win_chr_readfile(CharDriverState *chr) | |
2267 | { | |
2268 | WinCharState *s = chr->opaque; | |
2269 | int ret, err; | |
2270 | uint8_t buf[READ_BUF_LEN]; | |
2271 | DWORD size; | |
2272 | ||
2273 | ZeroMemory(&s->orecv, sizeof(s->orecv)); | |
2274 | s->orecv.hEvent = s->hrecv; | |
2275 | ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv); | |
2276 | if (!ret) { | |
2277 | err = GetLastError(); | |
2278 | if (err == ERROR_IO_PENDING) { | |
2279 | ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE); | |
2280 | } | |
2281 | } | |
2282 | ||
2283 | if (size > 0) { | |
2284 | qemu_chr_be_write(chr, buf, size); | |
2285 | } | |
2286 | } | |
2287 | ||
2288 | static void win_chr_read(CharDriverState *chr) | |
2289 | { | |
2290 | WinCharState *s = chr->opaque; | |
2291 | ||
2292 | if (s->len > s->max_size) | |
2293 | s->len = s->max_size; | |
2294 | if (s->len == 0) | |
2295 | return; | |
2296 | ||
2297 | win_chr_readfile(chr); | |
2298 | } | |
2299 | ||
2300 | static int win_chr_poll(void *opaque) | |
2301 | { | |
2302 | CharDriverState *chr = opaque; | |
2303 | WinCharState *s = chr->opaque; | |
2304 | COMSTAT status; | |
2305 | DWORD comerr; | |
2306 | ||
2307 | ClearCommError(s->hcom, &comerr, &status); | |
2308 | if (status.cbInQue > 0) { | |
2309 | s->len = status.cbInQue; | |
2310 | win_chr_read_poll(chr); | |
2311 | win_chr_read(chr); | |
2312 | return 1; | |
2313 | } | |
2314 | return 0; | |
2315 | } | |
2316 | ||
2317 | static CharDriverState *qemu_chr_open_win_path(const char *filename, | |
2318 | ChardevCommon *backend, | |
2319 | Error **errp) | |
2320 | { | |
2321 | CharDriverState *chr; | |
2322 | WinCharState *s; | |
2323 | ||
2324 | chr = qemu_chr_alloc(backend, errp); | |
2325 | if (!chr) { | |
2326 | return NULL; | |
2327 | } | |
2328 | s = g_new0(WinCharState, 1); | |
2329 | chr->opaque = s; | |
2330 | chr->chr_write = win_chr_write; | |
2331 | chr->chr_free = win_chr_free; | |
2332 | ||
2333 | if (win_chr_init(chr, filename, errp) < 0) { | |
2334 | g_free(s); | |
2335 | qemu_chr_free_common(chr); | |
2336 | return NULL; | |
2337 | } | |
2338 | return chr; | |
2339 | } | |
2340 | ||
2341 | static int win_chr_pipe_poll(void *opaque) | |
2342 | { | |
2343 | CharDriverState *chr = opaque; | |
2344 | WinCharState *s = chr->opaque; | |
2345 | DWORD size; | |
2346 | ||
2347 | PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL); | |
2348 | if (size > 0) { | |
2349 | s->len = size; | |
2350 | win_chr_read_poll(chr); | |
2351 | win_chr_read(chr); | |
2352 | return 1; | |
2353 | } | |
2354 | return 0; | |
2355 | } | |
2356 | ||
2357 | static int win_chr_pipe_init(CharDriverState *chr, const char *filename, | |
2358 | Error **errp) | |
2359 | { | |
2360 | WinCharState *s = chr->opaque; | |
2361 | OVERLAPPED ov; | |
2362 | int ret; | |
2363 | DWORD size; | |
2364 | char *openname; | |
2365 | ||
2366 | s->fpipe = TRUE; | |
2367 | ||
2368 | s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL); | |
2369 | if (!s->hsend) { | |
2370 | error_setg(errp, "Failed CreateEvent"); | |
2371 | goto fail; | |
2372 | } | |
2373 | s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL); | |
2374 | if (!s->hrecv) { | |
2375 | error_setg(errp, "Failed CreateEvent"); | |
2376 | goto fail; | |
2377 | } | |
2378 | ||
2379 | openname = g_strdup_printf("\\\\.\\pipe\\%s", filename); | |
2380 | s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED, | |
2381 | PIPE_TYPE_BYTE | PIPE_READMODE_BYTE | | |
2382 | PIPE_WAIT, | |
2383 | MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL); | |
2384 | g_free(openname); | |
2385 | if (s->hcom == INVALID_HANDLE_VALUE) { | |
2386 | error_setg(errp, "Failed CreateNamedPipe (%lu)", GetLastError()); | |
2387 | s->hcom = NULL; | |
2388 | goto fail; | |
2389 | } | |
2390 | ||
2391 | ZeroMemory(&ov, sizeof(ov)); | |
2392 | ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); | |
2393 | ret = ConnectNamedPipe(s->hcom, &ov); | |
2394 | if (ret) { | |
2395 | error_setg(errp, "Failed ConnectNamedPipe"); | |
2396 | goto fail; | |
2397 | } | |
2398 | ||
2399 | ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE); | |
2400 | if (!ret) { | |
2401 | error_setg(errp, "Failed GetOverlappedResult"); | |
2402 | if (ov.hEvent) { | |
2403 | CloseHandle(ov.hEvent); | |
2404 | ov.hEvent = NULL; | |
2405 | } | |
2406 | goto fail; | |
2407 | } | |
2408 | ||
2409 | if (ov.hEvent) { | |
2410 | CloseHandle(ov.hEvent); | |
2411 | ov.hEvent = NULL; | |
2412 | } | |
2413 | qemu_add_polling_cb(win_chr_pipe_poll, chr); | |
2414 | return 0; | |
2415 | ||
2416 | fail: | |
2417 | win_chr_free(chr); | |
2418 | return -1; | |
2419 | } | |
2420 | ||
2421 | ||
2422 | static CharDriverState *qemu_chr_open_pipe(const char *id, | |
2423 | ChardevBackend *backend, | |
2424 | ChardevReturn *ret, | |
2425 | bool *be_opened, | |
2426 | Error **errp) | |
2427 | { | |
2428 | ChardevHostdev *opts = backend->u.pipe.data; | |
2429 | const char *filename = opts->device; | |
2430 | CharDriverState *chr; | |
2431 | WinCharState *s; | |
2432 | ChardevCommon *common = qapi_ChardevHostdev_base(opts); | |
2433 | ||
2434 | chr = qemu_chr_alloc(common, errp); | |
2435 | if (!chr) { | |
2436 | return NULL; | |
2437 | } | |
2438 | s = g_new0(WinCharState, 1); | |
2439 | chr->opaque = s; | |
2440 | chr->chr_write = win_chr_write; | |
2441 | chr->chr_free = win_chr_free; | |
2442 | ||
2443 | if (win_chr_pipe_init(chr, filename, errp) < 0) { | |
2444 | g_free(s); | |
2445 | qemu_chr_free_common(chr); | |
2446 | return NULL; | |
2447 | } | |
2448 | return chr; | |
2449 | } | |
2450 | ||
2451 | static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out, | |
2452 | ChardevCommon *backend, | |
2453 | Error **errp) | |
2454 | { | |
2455 | CharDriverState *chr; | |
2456 | WinCharState *s; | |
2457 | ||
2458 | chr = qemu_chr_alloc(backend, errp); | |
2459 | if (!chr) { | |
2460 | return NULL; | |
2461 | } | |
2462 | s = g_new0(WinCharState, 1); | |
2463 | s->hcom = fd_out; | |
2464 | chr->opaque = s; | |
2465 | chr->chr_write = win_chr_write; | |
2466 | return chr; | |
2467 | } | |
2468 | ||
2469 | static CharDriverState *qemu_chr_open_win_con(const char *id, | |
2470 | ChardevBackend *backend, | |
2471 | ChardevReturn *ret, | |
2472 | bool *be_opened, | |
2473 | Error **errp) | |
2474 | { | |
2475 | ChardevCommon *common = backend->u.console.data; | |
2476 | return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE), | |
2477 | common, errp); | |
2478 | } | |
2479 | ||
2480 | static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len) | |
2481 | { | |
2482 | HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE); | |
2483 | DWORD dwSize; | |
2484 | int len1; | |
2485 | ||
2486 | len1 = len; | |
2487 | ||
2488 | while (len1 > 0) { | |
2489 | if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) { | |
2490 | break; | |
2491 | } | |
2492 | buf += dwSize; | |
2493 | len1 -= dwSize; | |
2494 | } | |
2495 | ||
2496 | return len - len1; | |
2497 | } | |
2498 | ||
2499 | static void win_stdio_wait_func(void *opaque) | |
2500 | { | |
2501 | CharDriverState *chr = opaque; | |
2502 | WinStdioCharState *stdio = chr->opaque; | |
2503 | INPUT_RECORD buf[4]; | |
2504 | int ret; | |
2505 | DWORD dwSize; | |
2506 | int i; | |
2507 | ||
2508 | ret = ReadConsoleInput(stdio->hStdIn, buf, ARRAY_SIZE(buf), &dwSize); | |
2509 | ||
2510 | if (!ret) { | |
2511 | /* Avoid error storm */ | |
2512 | qemu_del_wait_object(stdio->hStdIn, NULL, NULL); | |
2513 | return; | |
2514 | } | |
2515 | ||
2516 | for (i = 0; i < dwSize; i++) { | |
2517 | KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent; | |
2518 | ||
2519 | if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) { | |
2520 | int j; | |
2521 | if (kev->uChar.AsciiChar != 0) { | |
2522 | for (j = 0; j < kev->wRepeatCount; j++) { | |
2523 | if (qemu_chr_be_can_write(chr)) { | |
2524 | uint8_t c = kev->uChar.AsciiChar; | |
2525 | qemu_chr_be_write(chr, &c, 1); | |
2526 | } | |
2527 | } | |
2528 | } | |
2529 | } | |
2530 | } | |
2531 | } | |
2532 | ||
2533 | static DWORD WINAPI win_stdio_thread(LPVOID param) | |
2534 | { | |
2535 | CharDriverState *chr = param; | |
2536 | WinStdioCharState *stdio = chr->opaque; | |
2537 | int ret; | |
2538 | DWORD dwSize; | |
2539 | ||
2540 | while (1) { | |
2541 | ||
2542 | /* Wait for one byte */ | |
2543 | ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL); | |
2544 | ||
2545 | /* Exit in case of error, continue if nothing read */ | |
2546 | if (!ret) { | |
2547 | break; | |
2548 | } | |
2549 | if (!dwSize) { | |
2550 | continue; | |
2551 | } | |
2552 | ||
2553 | /* Some terminal emulator returns \r\n for Enter, just pass \n */ | |
2554 | if (stdio->win_stdio_buf == '\r') { | |
2555 | continue; | |
2556 | } | |
2557 | ||
2558 | /* Signal the main thread and wait until the byte was eaten */ | |
2559 | if (!SetEvent(stdio->hInputReadyEvent)) { | |
2560 | break; | |
2561 | } | |
2562 | if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE) | |
2563 | != WAIT_OBJECT_0) { | |
2564 | break; | |
2565 | } | |
2566 | } | |
2567 | ||
2568 | qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL); | |
2569 | return 0; | |
2570 | } | |
2571 | ||
2572 | static void win_stdio_thread_wait_func(void *opaque) | |
2573 | { | |
2574 | CharDriverState *chr = opaque; | |
2575 | WinStdioCharState *stdio = chr->opaque; | |
2576 | ||
2577 | if (qemu_chr_be_can_write(chr)) { | |
2578 | qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1); | |
2579 | } | |
2580 | ||
2581 | SetEvent(stdio->hInputDoneEvent); | |
2582 | } | |
2583 | ||
2584 | static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo) | |
2585 | { | |
2586 | WinStdioCharState *stdio = chr->opaque; | |
2587 | DWORD dwMode = 0; | |
2588 | ||
2589 | GetConsoleMode(stdio->hStdIn, &dwMode); | |
2590 | ||
2591 | if (echo) { | |
2592 | SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT); | |
2593 | } else { | |
2594 | SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT); | |
2595 | } | |
2596 | } | |
2597 | ||
2598 | static void win_stdio_free(CharDriverState *chr) | |
2599 | { | |
2600 | WinStdioCharState *stdio = chr->opaque; | |
2601 | ||
2602 | if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) { | |
2603 | CloseHandle(stdio->hInputReadyEvent); | |
2604 | } | |
2605 | if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) { | |
2606 | CloseHandle(stdio->hInputDoneEvent); | |
2607 | } | |
2608 | if (stdio->hInputThread != INVALID_HANDLE_VALUE) { | |
2609 | TerminateThread(stdio->hInputThread, 0); | |
2610 | } | |
2611 | ||
2612 | g_free(chr->opaque); | |
2613 | } | |
2614 | ||
2615 | static CharDriverState *qemu_chr_open_stdio(const char *id, | |
2616 | ChardevBackend *backend, | |
2617 | ChardevReturn *ret, | |
2618 | bool *be_opened, | |
2619 | Error **errp) | |
2620 | { | |
2621 | CharDriverState *chr; | |
2622 | WinStdioCharState *stdio; | |
2623 | DWORD dwMode; | |
2624 | int is_console = 0; | |
2625 | ChardevCommon *common = qapi_ChardevStdio_base(backend->u.stdio.data); | |
2626 | ||
2627 | chr = qemu_chr_alloc(common, errp); | |
2628 | if (!chr) { | |
2629 | return NULL; | |
2630 | } | |
2631 | stdio = g_new0(WinStdioCharState, 1); | |
2632 | ||
2633 | stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE); | |
2634 | if (stdio->hStdIn == INVALID_HANDLE_VALUE) { | |
2635 | error_setg(errp, "cannot open stdio: invalid handle"); | |
2636 | return NULL; | |
2637 | } | |
2638 | ||
2639 | is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0; | |
2640 | ||
2641 | chr->opaque = stdio; | |
2642 | chr->chr_write = win_stdio_write; | |
2643 | chr->chr_free = win_stdio_free; | |
2644 | ||
2645 | if (is_console) { | |
2646 | if (qemu_add_wait_object(stdio->hStdIn, | |
2647 | win_stdio_wait_func, chr)) { | |
2648 | error_setg(errp, "qemu_add_wait_object: failed"); | |
2649 | goto err1; | |
2650 | } | |
2651 | } else { | |
2652 | DWORD dwId; | |
2653 | ||
2654 | stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL); | |
2655 | stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL); | |
2656 | if (stdio->hInputReadyEvent == INVALID_HANDLE_VALUE | |
2657 | || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) { | |
2658 | error_setg(errp, "cannot create event"); | |
2659 | goto err2; | |
2660 | } | |
2661 | if (qemu_add_wait_object(stdio->hInputReadyEvent, | |
2662 | win_stdio_thread_wait_func, chr)) { | |
2663 | error_setg(errp, "qemu_add_wait_object: failed"); | |
2664 | goto err2; | |
2665 | } | |
2666 | stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread, | |
2667 | chr, 0, &dwId); | |
2668 | ||
2669 | if (stdio->hInputThread == INVALID_HANDLE_VALUE) { | |
2670 | error_setg(errp, "cannot create stdio thread"); | |
2671 | goto err3; | |
2672 | } | |
2673 | } | |
2674 | ||
2675 | dwMode |= ENABLE_LINE_INPUT; | |
2676 | ||
2677 | if (is_console) { | |
2678 | /* set the terminal in raw mode */ | |
2679 | /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */ | |
2680 | dwMode |= ENABLE_PROCESSED_INPUT; | |
2681 | } | |
2682 | ||
2683 | SetConsoleMode(stdio->hStdIn, dwMode); | |
2684 | ||
2685 | chr->chr_set_echo = qemu_chr_set_echo_win_stdio; | |
2686 | qemu_chr_set_echo_win_stdio(chr, false); | |
2687 | ||
2688 | return chr; | |
2689 | ||
2690 | err3: | |
2691 | qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL); | |
2692 | err2: | |
2693 | CloseHandle(stdio->hInputReadyEvent); | |
2694 | CloseHandle(stdio->hInputDoneEvent); | |
2695 | err1: | |
2696 | qemu_del_wait_object(stdio->hStdIn, NULL, NULL); | |
2697 | return NULL; | |
2698 | } | |
2699 | #endif /* !_WIN32 */ | |
2700 | ||
2701 | /***********************************************************/ | |
2702 | /* UDP Net console */ | |
2703 | ||
2704 | typedef struct { | |
2705 | QIOChannel *ioc; | |
2706 | uint8_t buf[READ_BUF_LEN]; | |
2707 | int bufcnt; | |
2708 | int bufptr; | |
2709 | int max_size; | |
2710 | } NetCharDriver; | |
2711 | ||
2712 | /* Called with chr_write_lock held. */ | |
2713 | static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len) | |
2714 | { | |
2715 | NetCharDriver *s = chr->opaque; | |
2716 | ||
2717 | return qio_channel_write( | |
2718 | s->ioc, (const char *)buf, len, NULL); | |
2719 | } | |
2720 | ||
2721 | static int udp_chr_read_poll(void *opaque) | |
2722 | { | |
2723 | CharDriverState *chr = opaque; | |
2724 | NetCharDriver *s = chr->opaque; | |
2725 | ||
2726 | s->max_size = qemu_chr_be_can_write(chr); | |
2727 | ||
2728 | /* If there were any stray characters in the queue process them | |
2729 | * first | |
2730 | */ | |
2731 | while (s->max_size > 0 && s->bufptr < s->bufcnt) { | |
2732 | qemu_chr_be_write(chr, &s->buf[s->bufptr], 1); | |
2733 | s->bufptr++; | |
2734 | s->max_size = qemu_chr_be_can_write(chr); | |
2735 | } | |
2736 | return s->max_size; | |
2737 | } | |
2738 | ||
2739 | static gboolean udp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque) | |
2740 | { | |
2741 | CharDriverState *chr = opaque; | |
2742 | NetCharDriver *s = chr->opaque; | |
2743 | ssize_t ret; | |
2744 | ||
2745 | if (s->max_size == 0) { | |
2746 | return TRUE; | |
2747 | } | |
2748 | ret = qio_channel_read( | |
2749 | s->ioc, (char *)s->buf, sizeof(s->buf), NULL); | |
2750 | if (ret <= 0) { | |
2751 | remove_fd_in_watch(chr); | |
2752 | return FALSE; | |
2753 | } | |
2754 | s->bufcnt = ret; | |
2755 | ||
2756 | s->bufptr = 0; | |
2757 | while (s->max_size > 0 && s->bufptr < s->bufcnt) { | |
2758 | qemu_chr_be_write(chr, &s->buf[s->bufptr], 1); | |
2759 | s->bufptr++; | |
2760 | s->max_size = qemu_chr_be_can_write(chr); | |
2761 | } | |
2762 | ||
2763 | return TRUE; | |
2764 | } | |
2765 | ||
2766 | static void udp_chr_update_read_handler(CharDriverState *chr, | |
2767 | GMainContext *context) | |
2768 | { | |
2769 | NetCharDriver *s = chr->opaque; | |
2770 | ||
2771 | remove_fd_in_watch(chr); | |
2772 | if (s->ioc) { | |
2773 | chr->fd_in_tag = io_add_watch_poll(chr, s->ioc, | |
2774 | udp_chr_read_poll, | |
2775 | udp_chr_read, chr, | |
2776 | context); | |
2777 | } | |
2778 | } | |
2779 | ||
2780 | static void udp_chr_free(CharDriverState *chr) | |
2781 | { | |
2782 | NetCharDriver *s = chr->opaque; | |
2783 | ||
2784 | remove_fd_in_watch(chr); | |
2785 | if (s->ioc) { | |
2786 | object_unref(OBJECT(s->ioc)); | |
2787 | } | |
2788 | g_free(s); | |
2789 | qemu_chr_be_event(chr, CHR_EVENT_CLOSED); | |
2790 | } | |
2791 | ||
2792 | static CharDriverState *qemu_chr_open_udp(QIOChannelSocket *sioc, | |
2793 | ChardevCommon *backend, | |
2794 | bool *be_opened, | |
2795 | Error **errp) | |
2796 | { | |
2797 | CharDriverState *chr = NULL; | |
2798 | NetCharDriver *s = NULL; | |
2799 | ||
2800 | chr = qemu_chr_alloc(backend, errp); | |
2801 | if (!chr) { | |
2802 | return NULL; | |
2803 | } | |
2804 | s = g_new0(NetCharDriver, 1); | |
2805 | ||
2806 | s->ioc = QIO_CHANNEL(sioc); | |
2807 | s->bufcnt = 0; | |
2808 | s->bufptr = 0; | |
2809 | chr->opaque = s; | |
2810 | chr->chr_write = udp_chr_write; | |
2811 | chr->chr_update_read_handler = udp_chr_update_read_handler; | |
2812 | chr->chr_free = udp_chr_free; | |
2813 | /* be isn't opened until we get a connection */ | |
2814 | *be_opened = false; | |
2815 | return chr; | |
2816 | } | |
2817 | ||
2818 | /***********************************************************/ | |
2819 | /* TCP Net console */ | |
2820 | ||
2821 | typedef struct { | |
2822 | QIOChannel *ioc; /* Client I/O channel */ | |
2823 | QIOChannelSocket *sioc; /* Client master channel */ | |
2824 | QIOChannelSocket *listen_ioc; | |
2825 | guint listen_tag; | |
2826 | QCryptoTLSCreds *tls_creds; | |
2827 | int connected; | |
2828 | int max_size; | |
2829 | int do_telnetopt; | |
2830 | int do_nodelay; | |
2831 | int is_unix; | |
2832 | int *read_msgfds; | |
2833 | size_t read_msgfds_num; | |
2834 | int *write_msgfds; | |
2835 | size_t write_msgfds_num; | |
2836 | ||
2837 | SocketAddress *addr; | |
2838 | bool is_listen; | |
2839 | bool is_telnet; | |
2840 | ||
2841 | guint reconnect_timer; | |
2842 | int64_t reconnect_time; | |
2843 | bool connect_err_reported; | |
2844 | } TCPCharDriver; | |
2845 | ||
2846 | static gboolean socket_reconnect_timeout(gpointer opaque); | |
2847 | ||
2848 | static void qemu_chr_socket_restart_timer(CharDriverState *chr) | |
2849 | { | |
2850 | TCPCharDriver *s = chr->opaque; | |
2851 | char *name; | |
2852 | assert(s->connected == 0); | |
2853 | s->reconnect_timer = g_timeout_add_seconds(s->reconnect_time, | |
2854 | socket_reconnect_timeout, chr); | |
2855 | name = g_strdup_printf("chardev-socket-reconnect-%s", chr->label); | |
2856 | g_source_set_name_by_id(s->reconnect_timer, name); | |
2857 | g_free(name); | |
2858 | } | |
2859 | ||
2860 | static void check_report_connect_error(CharDriverState *chr, | |
2861 | Error *err) | |
2862 | { | |
2863 | TCPCharDriver *s = chr->opaque; | |
2864 | ||
2865 | if (!s->connect_err_reported) { | |
2866 | error_report("Unable to connect character device %s: %s", | |
2867 | chr->label, error_get_pretty(err)); | |
2868 | s->connect_err_reported = true; | |
2869 | } | |
2870 | qemu_chr_socket_restart_timer(chr); | |
2871 | } | |
2872 | ||
2873 | static gboolean tcp_chr_accept(QIOChannel *chan, | |
2874 | GIOCondition cond, | |
2875 | void *opaque); | |
2876 | ||
2877 | /* Called with chr_write_lock held. */ | |
2878 | static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len) | |
2879 | { | |
2880 | TCPCharDriver *s = chr->opaque; | |
2881 | if (s->connected) { | |
2882 | int ret = io_channel_send_full(s->ioc, buf, len, | |
2883 | s->write_msgfds, | |
2884 | s->write_msgfds_num); | |
2885 | ||
2886 | /* free the written msgfds, no matter what */ | |
2887 | if (s->write_msgfds_num) { | |
2888 | g_free(s->write_msgfds); | |
2889 | s->write_msgfds = 0; | |
2890 | s->write_msgfds_num = 0; | |
2891 | } | |
2892 | ||
2893 | return ret; | |
2894 | } else { | |
2895 | /* XXX: indicate an error ? */ | |
2896 | return len; | |
2897 | } | |
2898 | } | |
2899 | ||
2900 | static int tcp_chr_read_poll(void *opaque) | |
2901 | { | |
2902 | CharDriverState *chr = opaque; | |
2903 | TCPCharDriver *s = chr->opaque; | |
2904 | if (!s->connected) | |
2905 | return 0; | |
2906 | s->max_size = qemu_chr_be_can_write(chr); | |
2907 | return s->max_size; | |
2908 | } | |
2909 | ||
2910 | #define IAC 255 | |
2911 | #define IAC_BREAK 243 | |
2912 | static void tcp_chr_process_IAC_bytes(CharDriverState *chr, | |
2913 | TCPCharDriver *s, | |
2914 | uint8_t *buf, int *size) | |
2915 | { | |
2916 | /* Handle any telnet client's basic IAC options to satisfy char by | |
2917 | * char mode with no echo. All IAC options will be removed from | |
2918 | * the buf and the do_telnetopt variable will be used to track the | |
2919 | * state of the width of the IAC information. | |
2920 | * | |
2921 | * IAC commands come in sets of 3 bytes with the exception of the | |
2922 | * "IAC BREAK" command and the double IAC. | |
2923 | */ | |
2924 | ||
2925 | int i; | |
2926 | int j = 0; | |
2927 | ||
2928 | for (i = 0; i < *size; i++) { | |
2929 | if (s->do_telnetopt > 1) { | |
2930 | if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) { | |
2931 | /* Double IAC means send an IAC */ | |
2932 | if (j != i) | |
2933 | buf[j] = buf[i]; | |
2934 | j++; | |
2935 | s->do_telnetopt = 1; | |
2936 | } else { | |
2937 | if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) { | |
2938 | /* Handle IAC break commands by sending a serial break */ | |
2939 | qemu_chr_be_event(chr, CHR_EVENT_BREAK); | |
2940 | s->do_telnetopt++; | |
2941 | } | |
2942 | s->do_telnetopt++; | |
2943 | } | |
2944 | if (s->do_telnetopt >= 4) { | |
2945 | s->do_telnetopt = 1; | |
2946 | } | |
2947 | } else { | |
2948 | if ((unsigned char)buf[i] == IAC) { | |
2949 | s->do_telnetopt = 2; | |
2950 | } else { | |
2951 | if (j != i) | |
2952 | buf[j] = buf[i]; | |
2953 | j++; | |
2954 | } | |
2955 | } | |
2956 | } | |
2957 | *size = j; | |
2958 | } | |
2959 | ||
2960 | static int tcp_get_msgfds(CharDriverState *chr, int *fds, int num) | |
2961 | { | |
2962 | TCPCharDriver *s = chr->opaque; | |
2963 | int to_copy = (s->read_msgfds_num < num) ? s->read_msgfds_num : num; | |
2964 | ||
2965 | assert(num <= TCP_MAX_FDS); | |
2966 | ||
2967 | if (to_copy) { | |
2968 | int i; | |
2969 | ||
2970 | memcpy(fds, s->read_msgfds, to_copy * sizeof(int)); | |
2971 | ||
2972 | /* Close unused fds */ | |
2973 | for (i = to_copy; i < s->read_msgfds_num; i++) { | |
2974 | close(s->read_msgfds[i]); | |
2975 | } | |
2976 | ||
2977 | g_free(s->read_msgfds); | |
2978 | s->read_msgfds = 0; | |
2979 | s->read_msgfds_num = 0; | |
2980 | } | |
2981 | ||
2982 | return to_copy; | |
2983 | } | |
2984 | ||
2985 | static int tcp_set_msgfds(CharDriverState *chr, int *fds, int num) | |
2986 | { | |
2987 | TCPCharDriver *s = chr->opaque; | |
2988 | ||
2989 | /* clear old pending fd array */ | |
2990 | g_free(s->write_msgfds); | |
2991 | s->write_msgfds = NULL; | |
2992 | s->write_msgfds_num = 0; | |
2993 | ||
2994 | if (!s->connected || | |
2995 | !qio_channel_has_feature(s->ioc, | |
2996 | QIO_CHANNEL_FEATURE_FD_PASS)) { | |
2997 | return -1; | |
2998 | } | |
2999 | ||
3000 | if (num) { | |
3001 | s->write_msgfds = g_new(int, num); | |
3002 | memcpy(s->write_msgfds, fds, num * sizeof(int)); | |
3003 | } | |
3004 | ||
3005 | s->write_msgfds_num = num; | |
3006 | ||
3007 | return 0; | |
3008 | } | |
3009 | ||
3010 | static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len) | |
3011 | { | |
3012 | TCPCharDriver *s = chr->opaque; | |
3013 | struct iovec iov = { .iov_base = buf, .iov_len = len }; | |
3014 | int ret; | |
3015 | size_t i; | |
3016 | int *msgfds = NULL; | |
3017 | size_t msgfds_num = 0; | |
3018 | ||
3019 | if (qio_channel_has_feature(s->ioc, QIO_CHANNEL_FEATURE_FD_PASS)) { | |
3020 | ret = qio_channel_readv_full(s->ioc, &iov, 1, | |
3021 | &msgfds, &msgfds_num, | |
3022 | NULL); | |
3023 | } else { | |
3024 | ret = qio_channel_readv_full(s->ioc, &iov, 1, | |
3025 | NULL, NULL, | |
3026 | NULL); | |
3027 | } | |
3028 | ||
3029 | if (ret == QIO_CHANNEL_ERR_BLOCK) { | |
3030 | errno = EAGAIN; | |
3031 | ret = -1; | |
3032 | } else if (ret == -1) { | |
3033 | errno = EIO; | |
3034 | } | |
3035 | ||
3036 | if (msgfds_num) { | |
3037 | /* close and clean read_msgfds */ | |
3038 | for (i = 0; i < s->read_msgfds_num; i++) { | |
3039 | close(s->read_msgfds[i]); | |
3040 | } | |
3041 | ||
3042 | if (s->read_msgfds_num) { | |
3043 | g_free(s->read_msgfds); | |
3044 | } | |
3045 | ||
3046 | s->read_msgfds = msgfds; | |
3047 | s->read_msgfds_num = msgfds_num; | |
3048 | } | |
3049 | ||
3050 | for (i = 0; i < s->read_msgfds_num; i++) { | |
3051 | int fd = s->read_msgfds[i]; | |
3052 | if (fd < 0) { | |
3053 | continue; | |
3054 | } | |
3055 | ||
3056 | /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */ | |
3057 | qemu_set_block(fd); | |
3058 | ||
3059 | #ifndef MSG_CMSG_CLOEXEC | |
3060 | qemu_set_cloexec(fd); | |
3061 | #endif | |
3062 | } | |
3063 | ||
3064 | return ret; | |
3065 | } | |
3066 | ||
3067 | static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond) | |
3068 | { | |
3069 | TCPCharDriver *s = chr->opaque; | |
3070 | return qio_channel_create_watch(s->ioc, cond); | |
3071 | } | |
3072 | ||
3073 | static void tcp_chr_free_connection(CharDriverState *chr) | |
3074 | { | |
3075 | TCPCharDriver *s = chr->opaque; | |
3076 | int i; | |
3077 | ||
3078 | if (!s->connected) { | |
3079 | return; | |
3080 | } | |
3081 | ||
3082 | if (s->read_msgfds_num) { | |
3083 | for (i = 0; i < s->read_msgfds_num; i++) { | |
3084 | close(s->read_msgfds[i]); | |
3085 | } | |
3086 | g_free(s->read_msgfds); | |
3087 | s->read_msgfds = NULL; | |
3088 | s->read_msgfds_num = 0; | |
3089 | } | |
3090 | ||
3091 | tcp_set_msgfds(chr, NULL, 0); | |
3092 | remove_fd_in_watch(chr); | |
3093 | object_unref(OBJECT(s->sioc)); | |
3094 | s->sioc = NULL; | |
3095 | object_unref(OBJECT(s->ioc)); | |
3096 | s->ioc = NULL; | |
3097 | g_free(chr->filename); | |
3098 | chr->filename = NULL; | |
3099 | s->connected = 0; | |
3100 | } | |
3101 | ||
3102 | static void tcp_chr_disconnect(CharDriverState *chr) | |
3103 | { | |
3104 | TCPCharDriver *s = chr->opaque; | |
3105 | ||
3106 | if (!s->connected) { | |
3107 | return; | |
3108 | } | |
3109 | ||
3110 | tcp_chr_free_connection(chr); | |
3111 | ||
3112 | if (s->listen_ioc) { | |
3113 | s->listen_tag = qio_channel_add_watch( | |
3114 | QIO_CHANNEL(s->listen_ioc), G_IO_IN, tcp_chr_accept, chr, NULL); | |
3115 | } | |
3116 | chr->filename = SocketAddress_to_str("disconnected:", s->addr, | |
3117 | s->is_listen, s->is_telnet); | |
3118 | qemu_chr_be_event(chr, CHR_EVENT_CLOSED); | |
3119 | if (s->reconnect_time) { | |
3120 | qemu_chr_socket_restart_timer(chr); | |
3121 | } | |
3122 | } | |
3123 | ||
3124 | static gboolean tcp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque) | |
3125 | { | |
3126 | CharDriverState *chr = opaque; | |
3127 | TCPCharDriver *s = chr->opaque; | |
3128 | uint8_t buf[READ_BUF_LEN]; | |
3129 | int len, size; | |
3130 | ||
3131 | if (!s->connected || s->max_size <= 0) { | |
3132 | return TRUE; | |
3133 | } | |
3134 | len = sizeof(buf); | |
3135 | if (len > s->max_size) | |
3136 | len = s->max_size; | |
3137 | size = tcp_chr_recv(chr, (void *)buf, len); | |
3138 | if (size == 0 || size == -1) { | |
3139 | /* connection closed */ | |
3140 | tcp_chr_disconnect(chr); | |
3141 | } else if (size > 0) { | |
3142 | if (s->do_telnetopt) | |
3143 | tcp_chr_process_IAC_bytes(chr, s, buf, &size); | |
3144 | if (size > 0) | |
3145 | qemu_chr_be_write(chr, buf, size); | |
3146 | } | |
3147 | ||
3148 | return TRUE; | |
3149 | } | |
3150 | ||
3151 | static int tcp_chr_sync_read(CharDriverState *chr, const uint8_t *buf, int len) | |
3152 | { | |
3153 | TCPCharDriver *s = chr->opaque; | |
3154 | int size; | |
3155 | ||
3156 | if (!s->connected) { | |
3157 | return 0; | |
3158 | } | |
3159 | ||
3160 | size = tcp_chr_recv(chr, (void *) buf, len); | |
3161 | if (size == 0) { | |
3162 | /* connection closed */ | |
3163 | tcp_chr_disconnect(chr); | |
3164 | } | |
3165 | ||
3166 | return size; | |
3167 | } | |
3168 | ||
3169 | static void tcp_chr_connect(void *opaque) | |
3170 | { | |
3171 | CharDriverState *chr = opaque; | |
3172 | TCPCharDriver *s = chr->opaque; | |
3173 | ||
3174 | g_free(chr->filename); | |
3175 | chr->filename = sockaddr_to_str( | |
3176 | &s->sioc->localAddr, s->sioc->localAddrLen, | |
3177 | &s->sioc->remoteAddr, s->sioc->remoteAddrLen, | |
3178 | s->is_listen, s->is_telnet); | |
3179 | ||
3180 | s->connected = 1; | |
3181 | if (s->ioc) { | |
3182 | chr->fd_in_tag = io_add_watch_poll(chr, s->ioc, | |
3183 | tcp_chr_read_poll, | |
3184 | tcp_chr_read, | |
3185 | chr, NULL); | |
3186 | } | |
3187 | qemu_chr_be_generic_open(chr); | |
3188 | } | |
3189 | ||
3190 | static void tcp_chr_update_read_handler(CharDriverState *chr, | |
3191 | GMainContext *context) | |
3192 | { | |
3193 | TCPCharDriver *s = chr->opaque; | |
3194 | ||
3195 | if (!s->connected) { | |
3196 | return; | |
3197 | } | |
3198 | ||
3199 | remove_fd_in_watch(chr); | |
3200 | if (s->ioc) { | |
3201 | chr->fd_in_tag = io_add_watch_poll(chr, s->ioc, | |
3202 | tcp_chr_read_poll, | |
3203 | tcp_chr_read, chr, | |
3204 | context); | |
3205 | } | |
3206 | } | |
3207 | ||
3208 | typedef struct { | |
3209 | CharDriverState *chr; | |
3210 | char buf[12]; | |
3211 | size_t buflen; | |
3212 | } TCPCharDriverTelnetInit; | |
3213 | ||
3214 | static gboolean tcp_chr_telnet_init_io(QIOChannel *ioc, | |
3215 | GIOCondition cond G_GNUC_UNUSED, | |
3216 | gpointer user_data) | |
3217 | { | |
3218 | TCPCharDriverTelnetInit *init = user_data; | |
3219 | ssize_t ret; | |
3220 | ||
3221 | ret = qio_channel_write(ioc, init->buf, init->buflen, NULL); | |
3222 | if (ret < 0) { | |
3223 | if (ret == QIO_CHANNEL_ERR_BLOCK) { | |
3224 | ret = 0; | |
3225 | } else { | |
3226 | tcp_chr_disconnect(init->chr); | |
3227 | return FALSE; | |
3228 | } | |
3229 | } | |
3230 | init->buflen -= ret; | |
3231 | ||
3232 | if (init->buflen == 0) { | |
3233 | tcp_chr_connect(init->chr); | |
3234 | return FALSE; | |
3235 | } | |
3236 | ||
3237 | memmove(init->buf, init->buf + ret, init->buflen); | |
3238 | ||
3239 | return TRUE; | |
3240 | } | |
3241 | ||
3242 | static void tcp_chr_telnet_init(CharDriverState *chr) | |
3243 | { | |
3244 | TCPCharDriver *s = chr->opaque; | |
3245 | TCPCharDriverTelnetInit *init = | |
3246 | g_new0(TCPCharDriverTelnetInit, 1); | |
3247 | size_t n = 0; | |
3248 | ||
3249 | init->chr = chr; | |
3250 | init->buflen = 12; | |
3251 | ||
3252 | #define IACSET(x, a, b, c) \ | |
3253 | do { \ | |
3254 | x[n++] = a; \ | |
3255 | x[n++] = b; \ | |
3256 | x[n++] = c; \ | |
3257 | } while (0) | |
3258 | ||
3259 | /* Prep the telnet negotion to put telnet in binary, | |
3260 | * no echo, single char mode */ | |
3261 | IACSET(init->buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */ | |
3262 | IACSET(init->buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */ | |
3263 | IACSET(init->buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */ | |
3264 | IACSET(init->buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */ | |
3265 | ||
3266 | #undef IACSET | |
3267 | ||
3268 | qio_channel_add_watch( | |
3269 | s->ioc, G_IO_OUT, | |
3270 | tcp_chr_telnet_init_io, | |
3271 | init, NULL); | |
3272 | } | |
3273 | ||
3274 | ||
3275 | static void tcp_chr_tls_handshake(Object *source, | |
3276 | Error *err, | |
3277 | gpointer user_data) | |
3278 | { | |
3279 | CharDriverState *chr = user_data; | |
3280 | TCPCharDriver *s = chr->opaque; | |
3281 | ||
3282 | if (err) { | |
3283 | tcp_chr_disconnect(chr); | |
3284 | } else { | |
3285 | if (s->do_telnetopt) { | |
3286 | tcp_chr_telnet_init(chr); | |
3287 | } else { | |
3288 | tcp_chr_connect(chr); | |
3289 | } | |
3290 | } | |
3291 | } | |
3292 | ||
3293 | ||
3294 | static void tcp_chr_tls_init(CharDriverState *chr) | |
3295 | { | |
3296 | TCPCharDriver *s = chr->opaque; | |
3297 | QIOChannelTLS *tioc; | |
3298 | Error *err = NULL; | |
3299 | gchar *name; | |
3300 | ||
3301 | if (s->is_listen) { | |
3302 | tioc = qio_channel_tls_new_server( | |
3303 | s->ioc, s->tls_creds, | |
3304 | NULL, /* XXX Use an ACL */ | |
3305 | &err); | |
3306 | } else { | |
3307 | tioc = qio_channel_tls_new_client( | |
3308 | s->ioc, s->tls_creds, | |
3309 | s->addr->u.inet.data->host, | |
3310 | &err); | |
3311 | } | |
3312 | if (tioc == NULL) { | |
3313 | error_free(err); | |
3314 | tcp_chr_disconnect(chr); | |
3315 | return; | |
3316 | } | |
3317 | name = g_strdup_printf("chardev-tls-%s-%s", | |
3318 | s->is_listen ? "server" : "client", | |
3319 | chr->label); | |
3320 | qio_channel_set_name(QIO_CHANNEL(tioc), name); | |
3321 | g_free(name); | |
3322 | object_unref(OBJECT(s->ioc)); | |
3323 | s->ioc = QIO_CHANNEL(tioc); | |
3324 | ||
3325 | qio_channel_tls_handshake(tioc, | |
3326 | tcp_chr_tls_handshake, | |
3327 | chr, | |
3328 | NULL); | |
3329 | } | |
3330 | ||
3331 | ||
3332 | static void tcp_chr_set_client_ioc_name(CharDriverState *chr, | |
3333 | QIOChannelSocket *sioc) | |
3334 | { | |
3335 | TCPCharDriver *s = chr->opaque; | |
3336 | char *name; | |
3337 | name = g_strdup_printf("chardev-tcp-%s-%s", | |
3338 | s->is_listen ? "server" : "client", | |
3339 | chr->label); | |
3340 | qio_channel_set_name(QIO_CHANNEL(sioc), name); | |
3341 | g_free(name); | |
3342 | ||
3343 | } | |
3344 | ||
3345 | static int tcp_chr_new_client(CharDriverState *chr, QIOChannelSocket *sioc) | |
3346 | { | |
3347 | TCPCharDriver *s = chr->opaque; | |
3348 | if (s->ioc != NULL) { | |
3349 | return -1; | |
3350 | } | |
3351 | ||
3352 | s->ioc = QIO_CHANNEL(sioc); | |
3353 | object_ref(OBJECT(sioc)); | |
3354 | s->sioc = sioc; | |
3355 | object_ref(OBJECT(sioc)); | |
3356 | ||
3357 | qio_channel_set_blocking(s->ioc, false, NULL); | |
3358 | ||
3359 | if (s->do_nodelay) { | |
3360 | qio_channel_set_delay(s->ioc, false); | |
3361 | } | |
3362 | if (s->listen_tag) { | |
3363 | g_source_remove(s->listen_tag); | |
3364 | s->listen_tag = 0; | |
3365 | } | |
3366 | ||
3367 | if (s->tls_creds) { | |
3368 | tcp_chr_tls_init(chr); | |
3369 | } else { | |
3370 | if (s->do_telnetopt) { | |
3371 | tcp_chr_telnet_init(chr); | |
3372 | } else { | |
3373 | tcp_chr_connect(chr); | |
3374 | } | |
3375 | } | |
3376 | ||
3377 | return 0; | |
3378 | } | |
3379 | ||
3380 | ||
3381 | static int tcp_chr_add_client(CharDriverState *chr, int fd) | |
3382 | { | |
3383 | int ret; | |
3384 | QIOChannelSocket *sioc; | |
3385 | ||
3386 | sioc = qio_channel_socket_new_fd(fd, NULL); | |
3387 | if (!sioc) { | |
3388 | return -1; | |
3389 | } | |
3390 | tcp_chr_set_client_ioc_name(chr, sioc); | |
3391 | ret = tcp_chr_new_client(chr, sioc); | |
3392 | object_unref(OBJECT(sioc)); | |
3393 | return ret; | |
3394 | } | |
3395 | ||
3396 | static gboolean tcp_chr_accept(QIOChannel *channel, | |
3397 | GIOCondition cond, | |
3398 | void *opaque) | |
3399 | { | |
3400 | CharDriverState *chr = opaque; | |
3401 | QIOChannelSocket *sioc; | |
3402 | ||
3403 | sioc = qio_channel_socket_accept(QIO_CHANNEL_SOCKET(channel), | |
3404 | NULL); | |
3405 | if (!sioc) { | |
3406 | return TRUE; | |
3407 | } | |
3408 | ||
3409 | tcp_chr_new_client(chr, sioc); | |
3410 | ||
3411 | object_unref(OBJECT(sioc)); | |
3412 | ||
3413 | return TRUE; | |
3414 | } | |
3415 | ||
3416 | static int tcp_chr_wait_connected(CharDriverState *chr, Error **errp) | |
3417 | { | |
3418 | TCPCharDriver *s = chr->opaque; | |
3419 | QIOChannelSocket *sioc; | |
3420 | ||
3421 | /* It can't wait on s->connected, since it is set asynchronously | |
3422 | * in TLS and telnet cases, only wait for an accepted socket */ | |
3423 | while (!s->ioc) { | |
3424 | if (s->is_listen) { | |
3425 | fprintf(stderr, "QEMU waiting for connection on: %s\n", | |
3426 | chr->filename); | |
3427 | qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), true, NULL); | |
3428 | tcp_chr_accept(QIO_CHANNEL(s->listen_ioc), G_IO_IN, chr); | |
3429 | qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), false, NULL); | |
3430 | } else { | |
3431 | sioc = qio_channel_socket_new(); | |
3432 | tcp_chr_set_client_ioc_name(chr, sioc); | |
3433 | if (qio_channel_socket_connect_sync(sioc, s->addr, errp) < 0) { | |
3434 | object_unref(OBJECT(sioc)); | |
3435 | return -1; | |
3436 | } | |
3437 | tcp_chr_new_client(chr, sioc); | |
3438 | object_unref(OBJECT(sioc)); | |
3439 | } | |
3440 | } | |
3441 | ||
3442 | return 0; | |
3443 | } | |
3444 | ||
3445 | static int qemu_chr_wait_connected(CharDriverState *chr, Error **errp) | |
3446 | { | |
3447 | if (chr->chr_wait_connected) { | |
3448 | return chr->chr_wait_connected(chr, errp); | |
3449 | } | |
3450 | ||
3451 | return 0; | |
3452 | } | |
3453 | ||
3454 | int qemu_chr_fe_wait_connected(CharBackend *be, Error **errp) | |
3455 | { | |
3456 | if (!be->chr) { | |
3457 | error_setg(errp, "missing associated backend"); | |
3458 | return -1; | |
3459 | } | |
3460 | ||
3461 | return qemu_chr_wait_connected(be->chr, errp); | |
3462 | } | |
3463 | ||
3464 | static void tcp_chr_free(CharDriverState *chr) | |
3465 | { | |
3466 | TCPCharDriver *s = chr->opaque; | |
3467 | ||
3468 | tcp_chr_free_connection(chr); | |
3469 | ||
3470 | if (s->reconnect_timer) { | |
3471 | g_source_remove(s->reconnect_timer); | |
3472 | s->reconnect_timer = 0; | |
3473 | } | |
3474 | qapi_free_SocketAddress(s->addr); | |
3475 | if (s->listen_tag) { | |
3476 | g_source_remove(s->listen_tag); | |
3477 | s->listen_tag = 0; | |
3478 | } | |
3479 | if (s->listen_ioc) { | |
3480 | object_unref(OBJECT(s->listen_ioc)); | |
3481 | } | |
3482 | if (s->tls_creds) { | |
3483 | object_unref(OBJECT(s->tls_creds)); | |
3484 | } | |
3485 | g_free(s); | |
3486 | qemu_chr_be_event(chr, CHR_EVENT_CLOSED); | |
3487 | } | |
3488 | ||
3489 | ||
3490 | static void qemu_chr_socket_connected(Object *src, Error *err, void *opaque) | |
3491 | { | |
3492 | QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(src); | |
3493 | CharDriverState *chr = opaque; | |
3494 | TCPCharDriver *s = chr->opaque; | |
3495 | ||
3496 | if (err) { | |
3497 | check_report_connect_error(chr, err); | |
3498 | object_unref(src); | |
3499 | return; | |
3500 | } | |
3501 | ||
3502 | s->connect_err_reported = false; | |
3503 | tcp_chr_new_client(chr, sioc); | |
3504 | object_unref(OBJECT(sioc)); | |
3505 | } | |
3506 | ||
3507 | ||
3508 | /*********************************************************/ | |
3509 | /* Ring buffer chardev */ | |
3510 | ||
3511 | typedef struct { | |
3512 | size_t size; | |
3513 | size_t prod; | |
3514 | size_t cons; | |
3515 | uint8_t *cbuf; | |
3516 | } RingBufCharDriver; | |
3517 | ||
3518 | static size_t ringbuf_count(const CharDriverState *chr) | |
3519 | { | |
3520 | const RingBufCharDriver *d = chr->opaque; | |
3521 | ||
3522 | return d->prod - d->cons; | |
3523 | } | |
3524 | ||
3525 | /* Called with chr_write_lock held. */ | |
3526 | static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len) | |
3527 | { | |
3528 | RingBufCharDriver *d = chr->opaque; | |
3529 | int i; | |
3530 | ||
3531 | if (!buf || (len < 0)) { | |
3532 | return -1; | |
3533 | } | |
3534 | ||
3535 | for (i = 0; i < len; i++ ) { | |
3536 | d->cbuf[d->prod++ & (d->size - 1)] = buf[i]; | |
3537 | if (d->prod - d->cons > d->size) { | |
3538 | d->cons = d->prod - d->size; | |
3539 | } | |
3540 | } | |
3541 | ||
3542 | return len; | |
3543 | } | |
3544 | ||
3545 | static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len) | |
3546 | { | |
3547 | RingBufCharDriver *d = chr->opaque; | |
3548 | int i; | |
3549 | ||
3550 | qemu_mutex_lock(&chr->chr_write_lock); | |
3551 | for (i = 0; i < len && d->cons != d->prod; i++) { | |
3552 | buf[i] = d->cbuf[d->cons++ & (d->size - 1)]; | |
3553 | } | |
3554 | qemu_mutex_unlock(&chr->chr_write_lock); | |
3555 | ||
3556 | return i; | |
3557 | } | |
3558 | ||
3559 | static void ringbuf_chr_free(struct CharDriverState *chr) | |
3560 | { | |
3561 | RingBufCharDriver *d = chr->opaque; | |
3562 | ||
3563 | g_free(d->cbuf); | |
3564 | g_free(d); | |
3565 | chr->opaque = NULL; | |
3566 | } | |
3567 | ||
3568 | static CharDriverState *qemu_chr_open_ringbuf(const char *id, | |
3569 | ChardevBackend *backend, | |
3570 | ChardevReturn *ret, | |
3571 | bool *be_opened, | |
3572 | Error **errp) | |
3573 | { | |
3574 | ChardevRingbuf *opts = backend->u.ringbuf.data; | |
3575 | ChardevCommon *common = qapi_ChardevRingbuf_base(opts); | |
3576 | CharDriverState *chr; | |
3577 | RingBufCharDriver *d; | |
3578 | ||
3579 | chr = qemu_chr_alloc(common, errp); | |
3580 | if (!chr) { | |
3581 | return NULL; | |
3582 | } | |
3583 | d = g_malloc(sizeof(*d)); | |
3584 | ||
3585 | d->size = opts->has_size ? opts->size : 65536; | |
3586 | ||
3587 | /* The size must be power of 2 */ | |
3588 | if (d->size & (d->size - 1)) { | |
3589 | error_setg(errp, "size of ringbuf chardev must be power of two"); | |
3590 | goto fail; | |
3591 | } | |
3592 | ||
3593 | d->prod = 0; | |
3594 | d->cons = 0; | |
3595 | d->cbuf = g_malloc0(d->size); | |
3596 | ||
3597 | chr->opaque = d; | |
3598 | chr->chr_write = ringbuf_chr_write; | |
3599 | chr->chr_free = ringbuf_chr_free; | |
3600 | ||
3601 | return chr; | |
3602 | ||
3603 | fail: | |
3604 | g_free(d); | |
3605 | qemu_chr_free_common(chr); | |
3606 | return NULL; | |
3607 | } | |
3608 | ||
3609 | bool chr_is_ringbuf(const CharDriverState *chr) | |
3610 | { | |
3611 | return chr->chr_write == ringbuf_chr_write; | |
3612 | } | |
3613 | ||
3614 | void qmp_ringbuf_write(const char *device, const char *data, | |
3615 | bool has_format, enum DataFormat format, | |
3616 | Error **errp) | |
3617 | { | |
3618 | CharDriverState *chr; | |
3619 | const uint8_t *write_data; | |
3620 | int ret; | |
3621 | gsize write_count; | |
3622 | ||
3623 | chr = qemu_chr_find(device); | |
3624 | if (!chr) { | |
3625 | error_setg(errp, "Device '%s' not found", device); | |
3626 | return; | |
3627 | } | |
3628 | ||
3629 | if (!chr_is_ringbuf(chr)) { | |
3630 | error_setg(errp,"%s is not a ringbuf device", device); | |
3631 | return; | |
3632 | } | |
3633 | ||
3634 | if (has_format && (format == DATA_FORMAT_BASE64)) { | |
3635 | write_data = qbase64_decode(data, -1, | |
3636 | &write_count, | |
3637 | errp); | |
3638 | if (!write_data) { | |
3639 | return; | |
3640 | } | |
3641 | } else { | |
3642 | write_data = (uint8_t *)data; | |
3643 | write_count = strlen(data); | |
3644 | } | |
3645 | ||
3646 | ret = ringbuf_chr_write(chr, write_data, write_count); | |
3647 | ||
3648 | if (write_data != (uint8_t *)data) { | |
3649 | g_free((void *)write_data); | |
3650 | } | |
3651 | ||
3652 | if (ret < 0) { | |
3653 | error_setg(errp, "Failed to write to device %s", device); | |
3654 | return; | |
3655 | } | |
3656 | } | |
3657 | ||
3658 | char *qmp_ringbuf_read(const char *device, int64_t size, | |
3659 | bool has_format, enum DataFormat format, | |
3660 | Error **errp) | |
3661 | { | |
3662 | CharDriverState *chr; | |
3663 | uint8_t *read_data; | |
3664 | size_t count; | |
3665 | char *data; | |
3666 | ||
3667 | chr = qemu_chr_find(device); | |
3668 | if (!chr) { | |
3669 | error_setg(errp, "Device '%s' not found", device); | |
3670 | return NULL; | |
3671 | } | |
3672 | ||
3673 | if (!chr_is_ringbuf(chr)) { | |
3674 | error_setg(errp,"%s is not a ringbuf device", device); | |
3675 | return NULL; | |
3676 | } | |
3677 | ||
3678 | if (size <= 0) { | |
3679 | error_setg(errp, "size must be greater than zero"); | |
3680 | return NULL; | |
3681 | } | |
3682 | ||
3683 | count = ringbuf_count(chr); | |
3684 | size = size > count ? count : size; | |
3685 | read_data = g_malloc(size + 1); | |
3686 | ||
3687 | ringbuf_chr_read(chr, read_data, size); | |
3688 | ||
3689 | if (has_format && (format == DATA_FORMAT_BASE64)) { | |
3690 | data = g_base64_encode(read_data, size); | |
3691 | g_free(read_data); | |
3692 | } else { | |
3693 | /* | |
3694 | * FIXME should read only complete, valid UTF-8 characters up | |
3695 | * to @size bytes. Invalid sequences should be replaced by a | |
3696 | * suitable replacement character. Except when (and only | |
3697 | * when) ring buffer lost characters since last read, initial | |
3698 | * continuation characters should be dropped. | |
3699 | */ | |
3700 | read_data[size] = 0; | |
3701 | data = (char *)read_data; | |
3702 | } | |
3703 | ||
3704 | return data; | |
3705 | } | |
3706 | ||
3707 | QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename) | |
3708 | { | |
3709 | char host[65], port[33], width[8], height[8]; | |
3710 | int pos; | |
3711 | const char *p; | |
3712 | QemuOpts *opts; | |
3713 | Error *local_err = NULL; | |
3714 | ||
3715 | opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err); | |
3716 | if (local_err) { | |
3717 | error_report_err(local_err); | |
3718 | return NULL; | |
3719 | } | |
3720 | ||
3721 | if (strstart(filename, "mon:", &p)) { | |
3722 | filename = p; | |
3723 | qemu_opt_set(opts, "mux", "on", &error_abort); | |
3724 | if (strcmp(filename, "stdio") == 0) { | |
3725 | /* Monitor is muxed to stdio: do not exit on Ctrl+C by default | |
3726 | * but pass it to the guest. Handle this only for compat syntax, | |
3727 | * for -chardev syntax we have special option for this. | |
3728 | * This is what -nographic did, redirecting+muxing serial+monitor | |
3729 | * to stdio causing Ctrl+C to be passed to guest. */ | |
3730 | qemu_opt_set(opts, "signal", "off", &error_abort); | |
3731 | } | |
3732 | } | |
3733 | ||
3734 | if (strcmp(filename, "null") == 0 || | |
3735 | strcmp(filename, "pty") == 0 || | |
3736 | strcmp(filename, "msmouse") == 0 || | |
3737 | strcmp(filename, "braille") == 0 || | |
3738 | strcmp(filename, "testdev") == 0 || | |
3739 | strcmp(filename, "stdio") == 0) { | |
3740 | qemu_opt_set(opts, "backend", filename, &error_abort); | |
3741 | return opts; | |
3742 | } | |
3743 | if (strstart(filename, "vc", &p)) { | |
3744 | qemu_opt_set(opts, "backend", "vc", &error_abort); | |
3745 | if (*p == ':') { | |
3746 | if (sscanf(p+1, "%7[0-9]x%7[0-9]", width, height) == 2) { | |
3747 | /* pixels */ | |
3748 | qemu_opt_set(opts, "width", width, &error_abort); | |
3749 | qemu_opt_set(opts, "height", height, &error_abort); | |
3750 | } else if (sscanf(p+1, "%7[0-9]Cx%7[0-9]C", width, height) == 2) { | |
3751 | /* chars */ | |
3752 | qemu_opt_set(opts, "cols", width, &error_abort); | |
3753 | qemu_opt_set(opts, "rows", height, &error_abort); | |
3754 | } else { | |
3755 | goto fail; | |
3756 | } | |
3757 | } | |
3758 | return opts; | |
3759 | } | |
3760 | if (strcmp(filename, "con:") == 0) { | |
3761 | qemu_opt_set(opts, "backend", "console", &error_abort); | |
3762 | return opts; | |
3763 | } | |
3764 | if (strstart(filename, "COM", NULL)) { | |
3765 | qemu_opt_set(opts, "backend", "serial", &error_abort); | |
3766 | qemu_opt_set(opts, "path", filename, &error_abort); | |
3767 | return opts; | |
3768 | } | |
3769 | if (strstart(filename, "file:", &p)) { | |
3770 | qemu_opt_set(opts, "backend", "file", &error_abort); | |
3771 | qemu_opt_set(opts, "path", p, &error_abort); | |
3772 | return opts; | |
3773 | } | |
3774 | if (strstart(filename, "pipe:", &p)) { | |
3775 | qemu_opt_set(opts, "backend", "pipe", &error_abort); | |
3776 | qemu_opt_set(opts, "path", p, &error_abort); | |
3777 | return opts; | |
3778 | } | |
3779 | if (strstart(filename, "tcp:", &p) || | |
3780 | strstart(filename, "telnet:", &p)) { | |
3781 | if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) { | |
3782 | host[0] = 0; | |
3783 | if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) | |
3784 | goto fail; | |
3785 | } | |
3786 | qemu_opt_set(opts, "backend", "socket", &error_abort); | |
3787 | qemu_opt_set(opts, "host", host, &error_abort); | |
3788 | qemu_opt_set(opts, "port", port, &error_abort); | |
3789 | if (p[pos] == ',') { | |
3790 | qemu_opts_do_parse(opts, p+pos+1, NULL, &local_err); | |
3791 | if (local_err) { | |
3792 | error_report_err(local_err); | |
3793 | goto fail; | |
3794 | } | |
3795 | } | |
3796 | if (strstart(filename, "telnet:", &p)) | |
3797 | qemu_opt_set(opts, "telnet", "on", &error_abort); | |
3798 | return opts; | |
3799 | } | |
3800 | if (strstart(filename, "udp:", &p)) { | |
3801 | qemu_opt_set(opts, "backend", "udp", &error_abort); | |
3802 | if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) { | |
3803 | host[0] = 0; | |
3804 | if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) { | |
3805 | goto fail; | |
3806 | } | |
3807 | } | |
3808 | qemu_opt_set(opts, "host", host, &error_abort); | |
3809 | qemu_opt_set(opts, "port", port, &error_abort); | |
3810 | if (p[pos] == '@') { | |
3811 | p += pos + 1; | |
3812 | if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) { | |
3813 | host[0] = 0; | |
3814 | if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) { | |
3815 | goto fail; | |
3816 | } | |
3817 | } | |
3818 | qemu_opt_set(opts, "localaddr", host, &error_abort); | |
3819 | qemu_opt_set(opts, "localport", port, &error_abort); | |
3820 | } | |
3821 | return opts; | |
3822 | } | |
3823 | if (strstart(filename, "unix:", &p)) { | |
3824 | qemu_opt_set(opts, "backend", "socket", &error_abort); | |
3825 | qemu_opts_do_parse(opts, p, "path", &local_err); | |
3826 | if (local_err) { | |
3827 | error_report_err(local_err); | |
3828 | goto fail; | |
3829 | } | |
3830 | return opts; | |
3831 | } | |
3832 | if (strstart(filename, "/dev/parport", NULL) || | |
3833 | strstart(filename, "/dev/ppi", NULL)) { | |
3834 | qemu_opt_set(opts, "backend", "parport", &error_abort); | |
3835 | qemu_opt_set(opts, "path", filename, &error_abort); | |
3836 | return opts; | |
3837 | } | |
3838 | if (strstart(filename, "/dev/", NULL)) { | |
3839 | qemu_opt_set(opts, "backend", "tty", &error_abort); | |
3840 | qemu_opt_set(opts, "path", filename, &error_abort); | |
3841 | return opts; | |
3842 | } | |
3843 | ||
3844 | fail: | |
3845 | qemu_opts_del(opts); | |
3846 | return NULL; | |
3847 | } | |
3848 | ||
3849 | void qemu_chr_parse_common(QemuOpts *opts, ChardevCommon *backend) | |
3850 | { | |
3851 | const char *logfile = qemu_opt_get(opts, "logfile"); | |
3852 | ||
3853 | backend->has_logfile = logfile != NULL; | |
3854 | backend->logfile = logfile ? g_strdup(logfile) : NULL; | |
3855 | ||
3856 | backend->has_logappend = true; | |
3857 | backend->logappend = qemu_opt_get_bool(opts, "logappend", false); | |
3858 | } | |
3859 | ||
3860 | ||
3861 | static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend, | |
3862 | Error **errp) | |
3863 | { | |
3864 | const char *path = qemu_opt_get(opts, "path"); | |
3865 | ChardevFile *file; | |
3866 | ||
3867 | if (path == NULL) { | |
3868 | error_setg(errp, "chardev: file: no filename given"); | |
3869 | return; | |
3870 | } | |
3871 | file = backend->u.file.data = g_new0(ChardevFile, 1); | |
3872 | qemu_chr_parse_common(opts, qapi_ChardevFile_base(file)); | |
3873 | file->out = g_strdup(path); | |
3874 | ||
3875 | file->has_append = true; | |
3876 | file->append = qemu_opt_get_bool(opts, "append", false); | |
3877 | } | |
3878 | ||
3879 | static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend, | |
3880 | Error **errp) | |
3881 | { | |
3882 | ChardevStdio *stdio; | |
3883 | ||
3884 | stdio = backend->u.stdio.data = g_new0(ChardevStdio, 1); | |
3885 | qemu_chr_parse_common(opts, qapi_ChardevStdio_base(stdio)); | |
3886 | stdio->has_signal = true; | |
3887 | stdio->signal = qemu_opt_get_bool(opts, "signal", true); | |
3888 | } | |
3889 | ||
3890 | #ifdef HAVE_CHARDEV_SERIAL | |
3891 | static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend, | |
3892 | Error **errp) | |
3893 | { | |
3894 | const char *device = qemu_opt_get(opts, "path"); | |
3895 | ChardevHostdev *serial; | |
3896 | ||
3897 | if (device == NULL) { | |
3898 | error_setg(errp, "chardev: serial/tty: no device path given"); | |
3899 | return; | |
3900 | } | |
3901 | serial = backend->u.serial.data = g_new0(ChardevHostdev, 1); | |
3902 | qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(serial)); | |
3903 | serial->device = g_strdup(device); | |
3904 | } | |
3905 | #endif | |
3906 | ||
3907 | #ifdef HAVE_CHARDEV_PARPORT | |
3908 | static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend, | |
3909 | Error **errp) | |
3910 | { | |
3911 | const char *device = qemu_opt_get(opts, "path"); | |
3912 | ChardevHostdev *parallel; | |
3913 | ||
3914 | if (device == NULL) { | |
3915 | error_setg(errp, "chardev: parallel: no device path given"); | |
3916 | return; | |
3917 | } | |
3918 | parallel = backend->u.parallel.data = g_new0(ChardevHostdev, 1); | |
3919 | qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(parallel)); | |
3920 | parallel->device = g_strdup(device); | |
3921 | } | |
3922 | #endif | |
3923 | ||
3924 | static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend, | |
3925 | Error **errp) | |
3926 | { | |
3927 | const char *device = qemu_opt_get(opts, "path"); | |
3928 | ChardevHostdev *dev; | |
3929 | ||
3930 | if (device == NULL) { | |
3931 | error_setg(errp, "chardev: pipe: no device path given"); | |
3932 | return; | |
3933 | } | |
3934 | dev = backend->u.pipe.data = g_new0(ChardevHostdev, 1); | |
3935 | qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(dev)); | |
3936 | dev->device = g_strdup(device); | |
3937 | } | |
3938 | ||
3939 | static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend, | |
3940 | Error **errp) | |
3941 | { | |
3942 | int val; | |
3943 | ChardevRingbuf *ringbuf; | |
3944 | ||
3945 | ringbuf = backend->u.ringbuf.data = g_new0(ChardevRingbuf, 1); | |
3946 | qemu_chr_parse_common(opts, qapi_ChardevRingbuf_base(ringbuf)); | |
3947 | ||
3948 | val = qemu_opt_get_size(opts, "size", 0); | |
3949 | if (val != 0) { | |
3950 | ringbuf->has_size = true; | |
3951 | ringbuf->size = val; | |
3952 | } | |
3953 | } | |
3954 | ||
3955 | static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend, | |
3956 | Error **errp) | |
3957 | { | |
3958 | const char *chardev = qemu_opt_get(opts, "chardev"); | |
3959 | ChardevMux *mux; | |
3960 | ||
3961 | if (chardev == NULL) { | |
3962 | error_setg(errp, "chardev: mux: no chardev given"); | |
3963 | return; | |
3964 | } | |
3965 | mux = backend->u.mux.data = g_new0(ChardevMux, 1); | |
3966 | qemu_chr_parse_common(opts, qapi_ChardevMux_base(mux)); | |
3967 | mux->chardev = g_strdup(chardev); | |
3968 | } | |
3969 | ||
3970 | static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend, | |
3971 | Error **errp) | |
3972 | { | |
3973 | bool is_listen = qemu_opt_get_bool(opts, "server", false); | |
3974 | bool is_waitconnect = is_listen && qemu_opt_get_bool(opts, "wait", true); | |
3975 | bool is_telnet = qemu_opt_get_bool(opts, "telnet", false); | |
3976 | bool do_nodelay = !qemu_opt_get_bool(opts, "delay", true); | |
3977 | int64_t reconnect = qemu_opt_get_number(opts, "reconnect", 0); | |
3978 | const char *path = qemu_opt_get(opts, "path"); | |
3979 | const char *host = qemu_opt_get(opts, "host"); | |
3980 | const char *port = qemu_opt_get(opts, "port"); | |
3981 | const char *tls_creds = qemu_opt_get(opts, "tls-creds"); | |
3982 | SocketAddress *addr; | |
3983 | ChardevSocket *sock; | |
3984 | ||
3985 | if (!path) { | |
3986 | if (!host) { | |
3987 | error_setg(errp, "chardev: socket: no host given"); | |
3988 | return; | |
3989 | } | |
3990 | if (!port) { | |
3991 | error_setg(errp, "chardev: socket: no port given"); | |
3992 | return; | |
3993 | } | |
3994 | } else { | |
3995 | if (tls_creds) { | |
3996 | error_setg(errp, "TLS can only be used over TCP socket"); | |
3997 | return; | |
3998 | } | |
3999 | } | |
4000 | ||
4001 | sock = backend->u.socket.data = g_new0(ChardevSocket, 1); | |
4002 | qemu_chr_parse_common(opts, qapi_ChardevSocket_base(sock)); | |
4003 | ||
4004 | sock->has_nodelay = true; | |
4005 | sock->nodelay = do_nodelay; | |
4006 | sock->has_server = true; | |
4007 | sock->server = is_listen; | |
4008 | sock->has_telnet = true; | |
4009 | sock->telnet = is_telnet; | |
4010 | sock->has_wait = true; | |
4011 | sock->wait = is_waitconnect; | |
4012 | sock->has_reconnect = true; | |
4013 | sock->reconnect = reconnect; | |
4014 | sock->tls_creds = g_strdup(tls_creds); | |
4015 | ||
4016 | addr = g_new0(SocketAddress, 1); | |
4017 | if (path) { | |
4018 | UnixSocketAddress *q_unix; | |
4019 | addr->type = SOCKET_ADDRESS_KIND_UNIX; | |
4020 | q_unix = addr->u.q_unix.data = g_new0(UnixSocketAddress, 1); | |
4021 | q_unix->path = g_strdup(path); | |
4022 | } else { | |
4023 | addr->type = SOCKET_ADDRESS_KIND_INET; | |
4024 | addr->u.inet.data = g_new(InetSocketAddress, 1); | |
4025 | *addr->u.inet.data = (InetSocketAddress) { | |
4026 | .host = g_strdup(host), | |
4027 | .port = g_strdup(port), | |
4028 | .has_to = qemu_opt_get(opts, "to"), | |
4029 | .to = qemu_opt_get_number(opts, "to", 0), | |
4030 | .has_ipv4 = qemu_opt_get(opts, "ipv4"), | |
4031 | .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0), | |
4032 | .has_ipv6 = qemu_opt_get(opts, "ipv6"), | |
4033 | .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0), | |
4034 | }; | |
4035 | } | |
4036 | sock->addr = addr; | |
4037 | } | |
4038 | ||
4039 | static void qemu_chr_parse_udp(QemuOpts *opts, ChardevBackend *backend, | |
4040 | Error **errp) | |
4041 | { | |
4042 | const char *host = qemu_opt_get(opts, "host"); | |
4043 | const char *port = qemu_opt_get(opts, "port"); | |
4044 | const char *localaddr = qemu_opt_get(opts, "localaddr"); | |
4045 | const char *localport = qemu_opt_get(opts, "localport"); | |
4046 | bool has_local = false; | |
4047 | SocketAddress *addr; | |
4048 | ChardevUdp *udp; | |
4049 | ||
4050 | if (host == NULL || strlen(host) == 0) { | |
4051 | host = "localhost"; | |
4052 | } | |
4053 | if (port == NULL || strlen(port) == 0) { | |
4054 | error_setg(errp, "chardev: udp: remote port not specified"); | |
4055 | return; | |
4056 | } | |
4057 | if (localport == NULL || strlen(localport) == 0) { | |
4058 | localport = "0"; | |
4059 | } else { | |
4060 | has_local = true; | |
4061 | } | |
4062 | if (localaddr == NULL || strlen(localaddr) == 0) { | |
4063 | localaddr = ""; | |
4064 | } else { | |
4065 | has_local = true; | |
4066 | } | |
4067 | ||
4068 | udp = backend->u.udp.data = g_new0(ChardevUdp, 1); | |
4069 | qemu_chr_parse_common(opts, qapi_ChardevUdp_base(udp)); | |
4070 | ||
4071 | addr = g_new0(SocketAddress, 1); | |
4072 | addr->type = SOCKET_ADDRESS_KIND_INET; | |
4073 | addr->u.inet.data = g_new(InetSocketAddress, 1); | |
4074 | *addr->u.inet.data = (InetSocketAddress) { | |
4075 | .host = g_strdup(host), | |
4076 | .port = g_strdup(port), | |
4077 | .has_ipv4 = qemu_opt_get(opts, "ipv4"), | |
4078 | .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0), | |
4079 | .has_ipv6 = qemu_opt_get(opts, "ipv6"), | |
4080 | .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0), | |
4081 | }; | |
4082 | udp->remote = addr; | |
4083 | ||
4084 | if (has_local) { | |
4085 | udp->has_local = true; | |
4086 | addr = g_new0(SocketAddress, 1); | |
4087 | addr->type = SOCKET_ADDRESS_KIND_INET; | |
4088 | addr->u.inet.data = g_new(InetSocketAddress, 1); | |
4089 | *addr->u.inet.data = (InetSocketAddress) { | |
4090 | .host = g_strdup(localaddr), | |
4091 | .port = g_strdup(localport), | |
4092 | }; | |
4093 | udp->local = addr; | |
4094 | } | |
4095 | } | |
4096 | ||
4097 | typedef struct CharDriver { | |
4098 | const char *name; | |
4099 | ChardevBackendKind kind; | |
4100 | CharDriverParse *parse; | |
4101 | CharDriverCreate *create; | |
4102 | } CharDriver; | |
4103 | ||
4104 | static GSList *backends; | |
4105 | ||
4106 | void register_char_driver(const char *name, ChardevBackendKind kind, | |
4107 | CharDriverParse *parse, CharDriverCreate *create) | |
4108 | { | |
4109 | CharDriver *s; | |
4110 | ||
4111 | s = g_malloc0(sizeof(*s)); | |
4112 | s->name = g_strdup(name); | |
4113 | s->kind = kind; | |
4114 | s->parse = parse; | |
4115 | s->create = create; | |
4116 | ||
4117 | backends = g_slist_append(backends, s); | |
4118 | } | |
4119 | ||
4120 | CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts, | |
4121 | Error **errp) | |
4122 | { | |
4123 | Error *local_err = NULL; | |
4124 | CharDriver *cd; | |
4125 | CharDriverState *chr; | |
4126 | GSList *i; | |
4127 | ChardevReturn *ret = NULL; | |
4128 | ChardevBackend *backend; | |
4129 | const char *id = qemu_opts_id(opts); | |
4130 | char *bid = NULL; | |
4131 | ||
4132 | if (qemu_opt_get(opts, "backend") == NULL) { | |
4133 | error_setg(errp, "chardev: \"%s\" missing backend", | |
4134 | qemu_opts_id(opts)); | |
4135 | goto err; | |
4136 | } | |
4137 | ||
4138 | if (is_help_option(qemu_opt_get(opts, "backend"))) { | |
4139 | fprintf(stderr, "Available chardev backend types:\n"); | |
4140 | for (i = backends; i; i = i->next) { | |
4141 | cd = i->data; | |
4142 | fprintf(stderr, "%s\n", cd->name); | |
4143 | } | |
4144 | exit(!is_help_option(qemu_opt_get(opts, "backend"))); | |
4145 | } | |
4146 | ||
4147 | if (id == NULL) { | |
4148 | error_setg(errp, "chardev: no id specified"); | |
4149 | goto err; | |
4150 | } | |
4151 | ||
4152 | for (i = backends; i; i = i->next) { | |
4153 | cd = i->data; | |
4154 | ||
4155 | if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) { | |
4156 | break; | |
4157 | } | |
4158 | } | |
4159 | if (i == NULL) { | |
4160 | error_setg(errp, "chardev: backend \"%s\" not found", | |
4161 | qemu_opt_get(opts, "backend")); | |
4162 | goto err; | |
4163 | } | |
4164 | ||
4165 | backend = g_new0(ChardevBackend, 1); | |
4166 | ||
4167 | if (qemu_opt_get_bool(opts, "mux", 0)) { | |
4168 | bid = g_strdup_printf("%s-base", id); | |
4169 | } | |
4170 | ||
4171 | chr = NULL; | |
4172 | backend->type = cd->kind; | |
4173 | if (cd->parse) { | |
4174 | cd->parse(opts, backend, &local_err); | |
4175 | if (local_err) { | |
4176 | error_propagate(errp, local_err); | |
4177 | goto qapi_out; | |
4178 | } | |
4179 | } else { | |
4180 | ChardevCommon *cc = g_new0(ChardevCommon, 1); | |
4181 | qemu_chr_parse_common(opts, cc); | |
4182 | backend->u.null.data = cc; /* Any ChardevCommon member would work */ | |
4183 | } | |
4184 | ||
4185 | ret = qmp_chardev_add(bid ? bid : id, backend, errp); | |
4186 | if (!ret) { | |
4187 | goto qapi_out; | |
4188 | } | |
4189 | ||
4190 | if (bid) { | |
4191 | qapi_free_ChardevBackend(backend); | |
4192 | qapi_free_ChardevReturn(ret); | |
4193 | backend = g_new0(ChardevBackend, 1); | |
4194 | backend->u.mux.data = g_new0(ChardevMux, 1); | |
4195 | backend->type = CHARDEV_BACKEND_KIND_MUX; | |
4196 | backend->u.mux.data->chardev = g_strdup(bid); | |
4197 | ret = qmp_chardev_add(id, backend, errp); | |
4198 | if (!ret) { | |
4199 | chr = qemu_chr_find(bid); | |
4200 | qemu_chr_delete(chr); | |
4201 | chr = NULL; | |
4202 | goto qapi_out; | |
4203 | } | |
4204 | } | |
4205 | ||
4206 | chr = qemu_chr_find(id); | |
4207 | ||
4208 | qapi_out: | |
4209 | qapi_free_ChardevBackend(backend); | |
4210 | qapi_free_ChardevReturn(ret); | |
4211 | g_free(bid); | |
4212 | return chr; | |
4213 | ||
4214 | err: | |
4215 | return NULL; | |
4216 | } | |
4217 | ||
4218 | CharDriverState *qemu_chr_new_noreplay(const char *label, const char *filename) | |
4219 | { | |
4220 | const char *p; | |
4221 | CharDriverState *chr; | |
4222 | QemuOpts *opts; | |
4223 | Error *err = NULL; | |
4224 | ||
4225 | if (strstart(filename, "chardev:", &p)) { | |
4226 | return qemu_chr_find(p); | |
4227 | } | |
4228 | ||
4229 | opts = qemu_chr_parse_compat(label, filename); | |
4230 | if (!opts) | |
4231 | return NULL; | |
4232 | ||
4233 | chr = qemu_chr_new_from_opts(opts, &err); | |
4234 | if (err) { | |
4235 | error_report_err(err); | |
4236 | } | |
4237 | if (chr && qemu_opt_get_bool(opts, "mux", 0)) { | |
4238 | monitor_init(chr, MONITOR_USE_READLINE); | |
4239 | } | |
4240 | qemu_opts_del(opts); | |
4241 | return chr; | |
4242 | } | |
4243 | ||
4244 | CharDriverState *qemu_chr_new(const char *label, const char *filename) | |
4245 | { | |
4246 | CharDriverState *chr; | |
4247 | chr = qemu_chr_new_noreplay(label, filename); | |
4248 | if (chr) { | |
4249 | chr->replay = replay_mode != REPLAY_MODE_NONE; | |
4250 | if (chr->replay && chr->chr_ioctl) { | |
4251 | fprintf(stderr, | |
4252 | "Replay: ioctl is not supported for serial devices yet\n"); | |
4253 | } | |
4254 | replay_register_char_driver(chr); | |
4255 | } | |
4256 | return chr; | |
4257 | } | |
4258 | ||
4259 | void qemu_chr_fe_set_echo(CharBackend *be, bool echo) | |
4260 | { | |
4261 | CharDriverState *chr = be->chr; | |
4262 | ||
4263 | if (chr && chr->chr_set_echo) { | |
4264 | chr->chr_set_echo(chr, echo); | |
4265 | } | |
4266 | } | |
4267 | ||
4268 | void qemu_chr_fe_set_open(CharBackend *be, int fe_open) | |
4269 | { | |
4270 | CharDriverState *chr = be->chr; | |
4271 | ||
4272 | if (!chr) { | |
4273 | return; | |
4274 | } | |
4275 | ||
4276 | if (be->fe_open == fe_open) { | |
4277 | return; | |
4278 | } | |
4279 | be->fe_open = fe_open; | |
4280 | if (chr->chr_set_fe_open) { | |
4281 | chr->chr_set_fe_open(chr, fe_open); | |
4282 | } | |
4283 | } | |
4284 | ||
4285 | guint qemu_chr_fe_add_watch(CharBackend *be, GIOCondition cond, | |
4286 | GIOFunc func, void *user_data) | |
4287 | { | |
4288 | CharDriverState *s = be->chr; | |
4289 | GSource *src; | |
4290 | guint tag; | |
4291 | ||
4292 | if (!s || s->chr_add_watch == NULL) { | |
4293 | return 0; | |
4294 | } | |
4295 | ||
4296 | src = s->chr_add_watch(s, cond); | |
4297 | if (!src) { | |
4298 | return 0; | |
4299 | } | |
4300 | ||
4301 | g_source_set_callback(src, (GSourceFunc)func, user_data, NULL); | |
4302 | tag = g_source_attach(src, NULL); | |
4303 | g_source_unref(src); | |
4304 | ||
4305 | return tag; | |
4306 | } | |
4307 | ||
4308 | void qemu_chr_fe_disconnect(CharBackend *be) | |
4309 | { | |
4310 | CharDriverState *chr = be->chr; | |
4311 | ||
4312 | if (chr && chr->chr_disconnect) { | |
4313 | chr->chr_disconnect(chr); | |
4314 | } | |
4315 | } | |
4316 | ||
4317 | static void qemu_chr_free_common(CharDriverState *chr) | |
4318 | { | |
4319 | if (chr->be) { | |
4320 | chr->be->chr = NULL; | |
4321 | } | |
4322 | g_free(chr->filename); | |
4323 | g_free(chr->label); | |
4324 | if (chr->logfd != -1) { | |
4325 | close(chr->logfd); | |
4326 | } | |
4327 | qemu_mutex_destroy(&chr->chr_write_lock); | |
4328 | g_free(chr); | |
4329 | } | |
4330 | ||
4331 | void qemu_chr_free(CharDriverState *chr) | |
4332 | { | |
4333 | if (chr->chr_free) { | |
4334 | chr->chr_free(chr); | |
4335 | } | |
4336 | qemu_chr_free_common(chr); | |
4337 | } | |
4338 | ||
4339 | void qemu_chr_delete(CharDriverState *chr) | |
4340 | { | |
4341 | QTAILQ_REMOVE(&chardevs, chr, next); | |
4342 | qemu_chr_free(chr); | |
4343 | } | |
4344 | ||
4345 | ChardevInfoList *qmp_query_chardev(Error **errp) | |
4346 | { | |
4347 | ChardevInfoList *chr_list = NULL; | |
4348 | CharDriverState *chr; | |
4349 | ||
4350 | QTAILQ_FOREACH(chr, &chardevs, next) { | |
4351 | ChardevInfoList *info = g_malloc0(sizeof(*info)); | |
4352 | info->value = g_malloc0(sizeof(*info->value)); | |
4353 | info->value->label = g_strdup(chr->label); | |
4354 | info->value->filename = g_strdup(chr->filename); | |
4355 | info->value->frontend_open = chr->be && chr->be->fe_open; | |
4356 | ||
4357 | info->next = chr_list; | |
4358 | chr_list = info; | |
4359 | } | |
4360 | ||
4361 | return chr_list; | |
4362 | } | |
4363 | ||
4364 | ChardevBackendInfoList *qmp_query_chardev_backends(Error **errp) | |
4365 | { | |
4366 | ChardevBackendInfoList *backend_list = NULL; | |
4367 | CharDriver *c = NULL; | |
4368 | GSList *i = NULL; | |
4369 | ||
4370 | for (i = backends; i; i = i->next) { | |
4371 | ChardevBackendInfoList *info = g_malloc0(sizeof(*info)); | |
4372 | c = i->data; | |
4373 | info->value = g_malloc0(sizeof(*info->value)); | |
4374 | info->value->name = g_strdup(c->name); | |
4375 | ||
4376 | info->next = backend_list; | |
4377 | backend_list = info; | |
4378 | } | |
4379 | ||
4380 | return backend_list; | |
4381 | } | |
4382 | ||
4383 | CharDriverState *qemu_chr_find(const char *name) | |
4384 | { | |
4385 | CharDriverState *chr; | |
4386 | ||
4387 | QTAILQ_FOREACH(chr, &chardevs, next) { | |
4388 | if (strcmp(chr->label, name) != 0) | |
4389 | continue; | |
4390 | return chr; | |
4391 | } | |
4392 | return NULL; | |
4393 | } | |
4394 | ||
4395 | QemuOptsList qemu_chardev_opts = { | |
4396 | .name = "chardev", | |
4397 | .implied_opt_name = "backend", | |
4398 | .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head), | |
4399 | .desc = { | |
4400 | { | |
4401 | .name = "backend", | |
4402 | .type = QEMU_OPT_STRING, | |
4403 | },{ | |
4404 | .name = "path", | |
4405 | .type = QEMU_OPT_STRING, | |
4406 | },{ | |
4407 | .name = "host", | |
4408 | .type = QEMU_OPT_STRING, | |
4409 | },{ | |
4410 | .name = "port", | |
4411 | .type = QEMU_OPT_STRING, | |
4412 | },{ | |
4413 | .name = "localaddr", | |
4414 | .type = QEMU_OPT_STRING, | |
4415 | },{ | |
4416 | .name = "localport", | |
4417 | .type = QEMU_OPT_STRING, | |
4418 | },{ | |
4419 | .name = "to", | |
4420 | .type = QEMU_OPT_NUMBER, | |
4421 | },{ | |
4422 | .name = "ipv4", | |
4423 | .type = QEMU_OPT_BOOL, | |
4424 | },{ | |
4425 | .name = "ipv6", | |
4426 | .type = QEMU_OPT_BOOL, | |
4427 | },{ | |
4428 | .name = "wait", | |
4429 | .type = QEMU_OPT_BOOL, | |
4430 | },{ | |
4431 | .name = "server", | |
4432 | .type = QEMU_OPT_BOOL, | |
4433 | },{ | |
4434 | .name = "delay", | |
4435 | .type = QEMU_OPT_BOOL, | |
4436 | },{ | |
4437 | .name = "reconnect", | |
4438 | .type = QEMU_OPT_NUMBER, | |
4439 | },{ | |
4440 | .name = "telnet", | |
4441 | .type = QEMU_OPT_BOOL, | |
4442 | },{ | |
4443 | .name = "tls-creds", | |
4444 | .type = QEMU_OPT_STRING, | |
4445 | },{ | |
4446 | .name = "width", | |
4447 | .type = QEMU_OPT_NUMBER, | |
4448 | },{ | |
4449 | .name = "height", | |
4450 | .type = QEMU_OPT_NUMBER, | |
4451 | },{ | |
4452 | .name = "cols", | |
4453 | .type = QEMU_OPT_NUMBER, | |
4454 | },{ | |
4455 | .name = "rows", | |
4456 | .type = QEMU_OPT_NUMBER, | |
4457 | },{ | |
4458 | .name = "mux", | |
4459 | .type = QEMU_OPT_BOOL, | |
4460 | },{ | |
4461 | .name = "signal", | |
4462 | .type = QEMU_OPT_BOOL, | |
4463 | },{ | |
4464 | .name = "name", | |
4465 | .type = QEMU_OPT_STRING, | |
4466 | },{ | |
4467 | .name = "debug", | |
4468 | .type = QEMU_OPT_NUMBER, | |
4469 | },{ | |
4470 | .name = "size", | |
4471 | .type = QEMU_OPT_SIZE, | |
4472 | },{ | |
4473 | .name = "chardev", | |
4474 | .type = QEMU_OPT_STRING, | |
4475 | },{ | |
4476 | .name = "append", | |
4477 | .type = QEMU_OPT_BOOL, | |
4478 | },{ | |
4479 | .name = "logfile", | |
4480 | .type = QEMU_OPT_STRING, | |
4481 | },{ | |
4482 | .name = "logappend", | |
4483 | .type = QEMU_OPT_BOOL, | |
4484 | }, | |
4485 | { /* end of list */ } | |
4486 | }, | |
4487 | }; | |
4488 | ||
4489 | #ifdef _WIN32 | |
4490 | ||
4491 | static CharDriverState *qmp_chardev_open_file(const char *id, | |
4492 | ChardevBackend *backend, | |
4493 | ChardevReturn *ret, | |
4494 | bool *be_opened, | |
4495 | Error **errp) | |
4496 | { | |
4497 | ChardevFile *file = backend->u.file.data; | |
4498 | ChardevCommon *common = qapi_ChardevFile_base(file); | |
4499 | HANDLE out; | |
4500 | DWORD accessmode; | |
4501 | DWORD flags; | |
4502 | ||
4503 | if (file->has_in) { | |
4504 | error_setg(errp, "input file not supported"); | |
4505 | return NULL; | |
4506 | } | |
4507 | ||
4508 | if (file->has_append && file->append) { | |
4509 | /* Append to file if it already exists. */ | |
4510 | accessmode = FILE_GENERIC_WRITE & ~FILE_WRITE_DATA; | |
4511 | flags = OPEN_ALWAYS; | |
4512 | } else { | |
4513 | /* Truncate file if it already exists. */ | |
4514 | accessmode = GENERIC_WRITE; | |
4515 | flags = CREATE_ALWAYS; | |
4516 | } | |
4517 | ||
4518 | out = CreateFile(file->out, accessmode, FILE_SHARE_READ, NULL, flags, | |
4519 | FILE_ATTRIBUTE_NORMAL, NULL); | |
4520 | if (out == INVALID_HANDLE_VALUE) { | |
4521 | error_setg(errp, "open %s failed", file->out); | |
4522 | return NULL; | |
4523 | } | |
4524 | return qemu_chr_open_win_file(out, common, errp); | |
4525 | } | |
4526 | ||
4527 | static CharDriverState *qmp_chardev_open_serial(const char *id, | |
4528 | ChardevBackend *backend, | |
4529 | ChardevReturn *ret, | |
4530 | bool *be_opened, | |
4531 | Error **errp) | |
4532 | { | |
4533 | ChardevHostdev *serial = backend->u.serial.data; | |
4534 | ChardevCommon *common = qapi_ChardevHostdev_base(serial); | |
4535 | return qemu_chr_open_win_path(serial->device, common, errp); | |
4536 | } | |
4537 | ||
4538 | #else /* WIN32 */ | |
4539 | ||
4540 | static int qmp_chardev_open_file_source(char *src, int flags, | |
4541 | Error **errp) | |
4542 | { | |
4543 | int fd = -1; | |
4544 | ||
4545 | TFR(fd = qemu_open(src, flags, 0666)); | |
4546 | if (fd == -1) { | |
4547 | error_setg_file_open(errp, errno, src); | |
4548 | } | |
4549 | return fd; | |
4550 | } | |
4551 | ||
4552 | static CharDriverState *qmp_chardev_open_file(const char *id, | |
4553 | ChardevBackend *backend, | |
4554 | ChardevReturn *ret, | |
4555 | bool *be_opened, | |
4556 | Error **errp) | |
4557 | { | |
4558 | ChardevFile *file = backend->u.file.data; | |
4559 | ChardevCommon *common = qapi_ChardevFile_base(file); | |
4560 | int flags, in = -1, out; | |
4561 | ||
4562 | flags = O_WRONLY | O_CREAT | O_BINARY; | |
4563 | if (file->has_append && file->append) { | |
4564 | flags |= O_APPEND; | |
4565 | } else { | |
4566 | flags |= O_TRUNC; | |
4567 | } | |
4568 | ||
4569 | out = qmp_chardev_open_file_source(file->out, flags, errp); | |
4570 | if (out < 0) { | |
4571 | return NULL; | |
4572 | } | |
4573 | ||
4574 | if (file->has_in) { | |
4575 | flags = O_RDONLY; | |
4576 | in = qmp_chardev_open_file_source(file->in, flags, errp); | |
4577 | if (in < 0) { | |
4578 | qemu_close(out); | |
4579 | return NULL; | |
4580 | } | |
4581 | } | |
4582 | ||
4583 | return qemu_chr_open_fd(in, out, common, errp); | |
4584 | } | |
4585 | ||
4586 | #ifdef HAVE_CHARDEV_SERIAL | |
4587 | static CharDriverState *qmp_chardev_open_serial(const char *id, | |
4588 | ChardevBackend *backend, | |
4589 | ChardevReturn *ret, | |
4590 | bool *be_opened, | |
4591 | Error **errp) | |
4592 | { | |
4593 | ChardevHostdev *serial = backend->u.serial.data; | |
4594 | ChardevCommon *common = qapi_ChardevHostdev_base(serial); | |
4595 | int fd; | |
4596 | ||
4597 | fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp); | |
4598 | if (fd < 0) { | |
4599 | return NULL; | |
4600 | } | |
4601 | qemu_set_nonblock(fd); | |
4602 | return qemu_chr_open_tty_fd(fd, common, be_opened, errp); | |
4603 | } | |
4604 | #endif | |
4605 | ||
4606 | #ifdef HAVE_CHARDEV_PARPORT | |
4607 | static CharDriverState *qmp_chardev_open_parallel(const char *id, | |
4608 | ChardevBackend *backend, | |
4609 | ChardevReturn *ret, | |
4610 | bool *be_opened, | |
4611 | Error **errp) | |
4612 | { | |
4613 | ChardevHostdev *parallel = backend->u.parallel.data; | |
4614 | ChardevCommon *common = qapi_ChardevHostdev_base(parallel); | |
4615 | int fd; | |
4616 | ||
4617 | fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp); | |
4618 | if (fd < 0) { | |
4619 | return NULL; | |
4620 | } | |
4621 | return qemu_chr_open_pp_fd(fd, common, be_opened, errp); | |
4622 | } | |
4623 | #endif | |
4624 | ||
4625 | #endif /* WIN32 */ | |
4626 | ||
4627 | static gboolean socket_reconnect_timeout(gpointer opaque) | |
4628 | { | |
4629 | CharDriverState *chr = opaque; | |
4630 | TCPCharDriver *s = chr->opaque; | |
4631 | QIOChannelSocket *sioc; | |
4632 | ||
4633 | s->reconnect_timer = 0; | |
4634 | ||
4635 | if (chr->be_open) { | |
4636 | return false; | |
4637 | } | |
4638 | ||
4639 | sioc = qio_channel_socket_new(); | |
4640 | tcp_chr_set_client_ioc_name(chr, sioc); | |
4641 | qio_channel_socket_connect_async(sioc, s->addr, | |
4642 | qemu_chr_socket_connected, | |
4643 | chr, NULL); | |
4644 | ||
4645 | return false; | |
4646 | } | |
4647 | ||
4648 | static CharDriverState *qmp_chardev_open_socket(const char *id, | |
4649 | ChardevBackend *backend, | |
4650 | ChardevReturn *ret, | |
4651 | bool *be_opened, | |
4652 | Error **errp) | |
4653 | { | |
4654 | CharDriverState *chr; | |
4655 | TCPCharDriver *s; | |
4656 | ChardevSocket *sock = backend->u.socket.data; | |
4657 | SocketAddress *addr = sock->addr; | |
4658 | bool do_nodelay = sock->has_nodelay ? sock->nodelay : false; | |
4659 | bool is_listen = sock->has_server ? sock->server : true; | |
4660 | bool is_telnet = sock->has_telnet ? sock->telnet : false; | |
4661 | bool is_waitconnect = sock->has_wait ? sock->wait : false; | |
4662 | int64_t reconnect = sock->has_reconnect ? sock->reconnect : 0; | |
4663 | ChardevCommon *common = qapi_ChardevSocket_base(sock); | |
4664 | QIOChannelSocket *sioc = NULL; | |
4665 | ||
4666 | chr = qemu_chr_alloc(common, errp); | |
4667 | if (!chr) { | |
4668 | return NULL; | |
4669 | } | |
4670 | s = g_new0(TCPCharDriver, 1); | |
4671 | ||
4672 | s->is_unix = addr->type == SOCKET_ADDRESS_KIND_UNIX; | |
4673 | s->is_listen = is_listen; | |
4674 | s->is_telnet = is_telnet; | |
4675 | s->do_nodelay = do_nodelay; | |
4676 | if (sock->tls_creds) { | |
4677 | Object *creds; | |
4678 | creds = object_resolve_path_component( | |
4679 | object_get_objects_root(), sock->tls_creds); | |
4680 | if (!creds) { | |
4681 | error_setg(errp, "No TLS credentials with id '%s'", | |
4682 | sock->tls_creds); | |
4683 | goto error; | |
4684 | } | |
4685 | s->tls_creds = (QCryptoTLSCreds *) | |
4686 | object_dynamic_cast(creds, | |
4687 | TYPE_QCRYPTO_TLS_CREDS); | |
4688 | if (!s->tls_creds) { | |
4689 | error_setg(errp, "Object with id '%s' is not TLS credentials", | |
4690 | sock->tls_creds); | |
4691 | goto error; | |
4692 | } | |
4693 | object_ref(OBJECT(s->tls_creds)); | |
4694 | if (is_listen) { | |
4695 | if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_SERVER) { | |
4696 | error_setg(errp, "%s", | |
4697 | "Expected TLS credentials for server endpoint"); | |
4698 | goto error; | |
4699 | } | |
4700 | } else { | |
4701 | if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT) { | |
4702 | error_setg(errp, "%s", | |
4703 | "Expected TLS credentials for client endpoint"); | |
4704 | goto error; | |
4705 | } | |
4706 | } | |
4707 | } | |
4708 | ||
4709 | s->addr = QAPI_CLONE(SocketAddress, sock->addr); | |
4710 | ||
4711 | qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_RECONNECTABLE); | |
4712 | if (s->is_unix) { | |
4713 | qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_FD_PASS); | |
4714 | } | |
4715 | ||
4716 | chr->opaque = s; | |
4717 | chr->chr_wait_connected = tcp_chr_wait_connected; | |
4718 | chr->chr_write = tcp_chr_write; | |
4719 | chr->chr_sync_read = tcp_chr_sync_read; | |
4720 | chr->chr_free = tcp_chr_free; | |
4721 | chr->chr_disconnect = tcp_chr_disconnect; | |
4722 | chr->get_msgfds = tcp_get_msgfds; | |
4723 | chr->set_msgfds = tcp_set_msgfds; | |
4724 | chr->chr_add_client = tcp_chr_add_client; | |
4725 | chr->chr_add_watch = tcp_chr_add_watch; | |
4726 | chr->chr_update_read_handler = tcp_chr_update_read_handler; | |
4727 | /* be isn't opened until we get a connection */ | |
4728 | *be_opened = false; | |
4729 | ||
4730 | chr->filename = SocketAddress_to_str("disconnected:", | |
4731 | addr, is_listen, is_telnet); | |
4732 | ||
4733 | if (is_listen) { | |
4734 | if (is_telnet) { | |
4735 | s->do_telnetopt = 1; | |
4736 | } | |
4737 | } else if (reconnect > 0) { | |
4738 | s->reconnect_time = reconnect; | |
4739 | } | |
4740 | ||
4741 | if (s->reconnect_time) { | |
4742 | sioc = qio_channel_socket_new(); | |
4743 | tcp_chr_set_client_ioc_name(chr, sioc); | |
4744 | qio_channel_socket_connect_async(sioc, s->addr, | |
4745 | qemu_chr_socket_connected, | |
4746 | chr, NULL); | |
4747 | } else { | |
4748 | if (s->is_listen) { | |
4749 | char *name; | |
4750 | sioc = qio_channel_socket_new(); | |
4751 | ||
4752 | name = g_strdup_printf("chardev-tcp-listener-%s", chr->label); | |
4753 | qio_channel_set_name(QIO_CHANNEL(sioc), name); | |
4754 | g_free(name); | |
4755 | ||
4756 | if (qio_channel_socket_listen_sync(sioc, s->addr, errp) < 0) { | |
4757 | goto error; | |
4758 | } | |
4759 | s->listen_ioc = sioc; | |
4760 | if (is_waitconnect && | |
4761 | qemu_chr_wait_connected(chr, errp) < 0) { | |
4762 | goto error; | |
4763 | } | |
4764 | if (!s->ioc) { | |
4765 | s->listen_tag = qio_channel_add_watch( | |
4766 | QIO_CHANNEL(s->listen_ioc), G_IO_IN, | |
4767 | tcp_chr_accept, chr, NULL); | |
4768 | } | |
4769 | } else if (qemu_chr_wait_connected(chr, errp) < 0) { | |
4770 | goto error; | |
4771 | } | |
4772 | } | |
4773 | ||
4774 | return chr; | |
4775 | ||
4776 | error: | |
4777 | if (sioc) { | |
4778 | object_unref(OBJECT(sioc)); | |
4779 | } | |
4780 | if (s->tls_creds) { | |
4781 | object_unref(OBJECT(s->tls_creds)); | |
4782 | } | |
4783 | g_free(s); | |
4784 | qemu_chr_free_common(chr); | |
4785 | return NULL; | |
4786 | } | |
4787 | ||
4788 | static CharDriverState *qmp_chardev_open_udp(const char *id, | |
4789 | ChardevBackend *backend, | |
4790 | ChardevReturn *ret, | |
4791 | bool *be_opened, | |
4792 | Error **errp) | |
4793 | { | |
4794 | ChardevUdp *udp = backend->u.udp.data; | |
4795 | ChardevCommon *common = qapi_ChardevUdp_base(udp); | |
4796 | QIOChannelSocket *sioc = qio_channel_socket_new(); | |
4797 | char *name; | |
4798 | CharDriverState *chr; | |
4799 | ||
4800 | if (qio_channel_socket_dgram_sync(sioc, | |
4801 | udp->local, udp->remote, | |
4802 | errp) < 0) { | |
4803 | object_unref(OBJECT(sioc)); | |
4804 | return NULL; | |
4805 | } | |
4806 | chr = qemu_chr_open_udp(sioc, common, be_opened, errp); | |
4807 | ||
4808 | name = g_strdup_printf("chardev-udp-%s", chr->label); | |
4809 | qio_channel_set_name(QIO_CHANNEL(sioc), name); | |
4810 | g_free(name); | |
4811 | ||
4812 | return chr; | |
4813 | } | |
4814 | ||
4815 | ||
4816 | bool qemu_chr_has_feature(CharDriverState *chr, | |
4817 | CharDriverFeature feature) | |
4818 | { | |
4819 | return test_bit(feature, chr->features); | |
4820 | } | |
4821 | ||
4822 | void qemu_chr_set_feature(CharDriverState *chr, | |
4823 | CharDriverFeature feature) | |
4824 | { | |
4825 | return set_bit(feature, chr->features); | |
4826 | } | |
4827 | ||
4828 | ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend, | |
4829 | Error **errp) | |
4830 | { | |
4831 | ChardevReturn *ret = g_new0(ChardevReturn, 1); | |
4832 | CharDriverState *chr = NULL; | |
4833 | Error *local_err = NULL; | |
4834 | GSList *i; | |
4835 | CharDriver *cd; | |
4836 | bool be_opened = true; | |
4837 | ||
4838 | chr = qemu_chr_find(id); | |
4839 | if (chr) { | |
4840 | error_setg(errp, "Chardev '%s' already exists", id); | |
4841 | goto out_error; | |
4842 | } | |
4843 | ||
4844 | for (i = backends; i; i = i->next) { | |
4845 | cd = i->data; | |
4846 | ||
4847 | if (cd->kind == backend->type) { | |
4848 | chr = cd->create(id, backend, ret, &be_opened, &local_err); | |
4849 | if (local_err) { | |
4850 | error_propagate(errp, local_err); | |
4851 | goto out_error; | |
4852 | } | |
4853 | break; | |
4854 | } | |
4855 | } | |
4856 | ||
4857 | if (chr == NULL) { | |
4858 | assert(!i); | |
4859 | error_setg(errp, "chardev backend not available"); | |
4860 | goto out_error; | |
4861 | } | |
4862 | ||
4863 | chr->label = g_strdup(id); | |
4864 | if (!chr->filename) { | |
4865 | chr->filename = g_strdup(ChardevBackendKind_lookup[backend->type]); | |
4866 | } | |
4867 | if (be_opened) { | |
4868 | qemu_chr_be_event(chr, CHR_EVENT_OPENED); | |
4869 | } | |
4870 | QTAILQ_INSERT_TAIL(&chardevs, chr, next); | |
4871 | return ret; | |
4872 | ||
4873 | out_error: | |
4874 | g_free(ret); | |
4875 | return NULL; | |
4876 | } | |
4877 | ||
4878 | void qmp_chardev_remove(const char *id, Error **errp) | |
4879 | { | |
4880 | CharDriverState *chr; | |
4881 | ||
4882 | chr = qemu_chr_find(id); | |
4883 | if (chr == NULL) { | |
4884 | error_setg(errp, "Chardev '%s' not found", id); | |
4885 | return; | |
4886 | } | |
4887 | if (qemu_chr_is_busy(chr)) { | |
4888 | error_setg(errp, "Chardev '%s' is busy", id); | |
4889 | return; | |
4890 | } | |
4891 | if (chr->replay) { | |
4892 | error_setg(errp, | |
4893 | "Chardev '%s' cannot be unplugged in record/replay mode", id); | |
4894 | return; | |
4895 | } | |
4896 | qemu_chr_delete(chr); | |
4897 | } | |
4898 | ||
4899 | void qemu_chr_cleanup(void) | |
4900 | { | |
4901 | CharDriverState *chr, *tmp; | |
4902 | ||
4903 | QTAILQ_FOREACH_SAFE(chr, &chardevs, next, tmp) { | |
4904 | qemu_chr_delete(chr); | |
4905 | } | |
4906 | } | |
4907 | ||
4908 | static void register_types(void) | |
4909 | { | |
4910 | register_char_driver("null", CHARDEV_BACKEND_KIND_NULL, NULL, | |
4911 | qemu_chr_open_null); | |
4912 | register_char_driver("socket", CHARDEV_BACKEND_KIND_SOCKET, | |
4913 | qemu_chr_parse_socket, qmp_chardev_open_socket); | |
4914 | register_char_driver("udp", CHARDEV_BACKEND_KIND_UDP, qemu_chr_parse_udp, | |
4915 | qmp_chardev_open_udp); | |
4916 | register_char_driver("ringbuf", CHARDEV_BACKEND_KIND_RINGBUF, | |
4917 | qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf); | |
4918 | register_char_driver("file", CHARDEV_BACKEND_KIND_FILE, | |
4919 | qemu_chr_parse_file_out, qmp_chardev_open_file); | |
4920 | register_char_driver("stdio", CHARDEV_BACKEND_KIND_STDIO, | |
4921 | qemu_chr_parse_stdio, qemu_chr_open_stdio); | |
4922 | #if defined HAVE_CHARDEV_SERIAL | |
4923 | register_char_driver("serial", CHARDEV_BACKEND_KIND_SERIAL, | |
4924 | qemu_chr_parse_serial, qmp_chardev_open_serial); | |
4925 | register_char_driver("tty", CHARDEV_BACKEND_KIND_SERIAL, | |
4926 | qemu_chr_parse_serial, qmp_chardev_open_serial); | |
4927 | #endif | |
4928 | #ifdef HAVE_CHARDEV_PARPORT | |
4929 | register_char_driver("parallel", CHARDEV_BACKEND_KIND_PARALLEL, | |
4930 | qemu_chr_parse_parallel, qmp_chardev_open_parallel); | |
4931 | register_char_driver("parport", CHARDEV_BACKEND_KIND_PARALLEL, | |
4932 | qemu_chr_parse_parallel, qmp_chardev_open_parallel); | |
4933 | #endif | |
4934 | #ifdef HAVE_CHARDEV_PTY | |
4935 | register_char_driver("pty", CHARDEV_BACKEND_KIND_PTY, NULL, | |
4936 | qemu_chr_open_pty); | |
4937 | #endif | |
4938 | #ifdef _WIN32 | |
4939 | register_char_driver("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL, | |
4940 | qemu_chr_open_win_con); | |
4941 | #endif | |
4942 | register_char_driver("pipe", CHARDEV_BACKEND_KIND_PIPE, | |
4943 | qemu_chr_parse_pipe, qemu_chr_open_pipe); | |
4944 | register_char_driver("mux", CHARDEV_BACKEND_KIND_MUX, qemu_chr_parse_mux, | |
4945 | qemu_chr_open_mux); | |
4946 | /* Bug-compatibility: */ | |
4947 | register_char_driver("memory", CHARDEV_BACKEND_KIND_MEMORY, | |
4948 | qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf); | |
4949 | /* this must be done after machine init, since we register FEs with muxes | |
4950 | * as part of realize functions like serial_isa_realizefn when -nographic | |
4951 | * is specified | |
4952 | */ | |
4953 | qemu_add_machine_init_done_notifier(&muxes_realize_notify); | |
4954 | } | |
4955 | ||
4956 | type_init(register_types); |