]>
Commit | Line | Data |
---|---|---|
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(CharDriverState *chr, 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(chr, (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(CharDriverState *chr, int focus) | |
830 | { | |
831 | MuxDriver *d = chr->opaque; | |
832 | ||
833 | assert(focus >= 0); | |
834 | assert(focus < d->mux_cnt); | |
835 | ||
836 | if (d->focus != -1) { | |
837 | mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT); | |
838 | } | |
839 | ||
840 | d->focus = focus; | |
841 | chr->be = d->backends[focus]; | |
842 | mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN); | |
843 | } | |
844 | ||
845 | static CharDriverState *qemu_chr_open_mux(const char *id, | |
846 | ChardevBackend *backend, | |
847 | ChardevReturn *ret, | |
848 | bool *be_opened, | |
849 | Error **errp) | |
850 | { | |
851 | ChardevMux *mux = backend->u.mux.data; | |
852 | CharDriverState *chr, *drv; | |
853 | MuxDriver *d; | |
854 | ChardevCommon *common = qapi_ChardevMux_base(mux); | |
855 | ||
856 | drv = qemu_chr_find(mux->chardev); | |
857 | if (drv == NULL) { | |
858 | error_setg(errp, "mux: base chardev %s not found", mux->chardev); | |
859 | return NULL; | |
860 | } | |
861 | ||
862 | chr = qemu_chr_alloc(common, errp); | |
863 | if (!chr) { | |
864 | return NULL; | |
865 | } | |
866 | d = g_new0(MuxDriver, 1); | |
867 | ||
868 | chr->opaque = d; | |
869 | d->focus = -1; | |
870 | chr->chr_free = mux_chr_free; | |
871 | chr->chr_write = mux_chr_write; | |
872 | chr->chr_accept_input = mux_chr_accept_input; | |
873 | /* Frontend guest-open / -close notification is not support with muxes */ | |
874 | chr->chr_set_fe_open = NULL; | |
875 | if (drv->chr_add_watch) { | |
876 | chr->chr_add_watch = mux_chr_add_watch; | |
877 | } | |
878 | /* only default to opened state if we've realized the initial | |
879 | * set of muxes | |
880 | */ | |
881 | *be_opened = muxes_realized; | |
882 | chr->is_mux = 1; | |
883 | if (!qemu_chr_fe_init(&d->chr, drv, errp)) { | |
884 | qemu_chr_free(chr); | |
885 | return NULL; | |
886 | } | |
887 | ||
888 | return chr; | |
889 | } | |
890 | ||
891 | CharDriverState *qemu_chr_fe_get_driver(CharBackend *be) | |
892 | { | |
893 | return be->chr; | |
894 | } | |
895 | ||
896 | bool qemu_chr_fe_init(CharBackend *b, CharDriverState *s, Error **errp) | |
897 | { | |
898 | int tag = 0; | |
899 | ||
900 | if (s->is_mux) { | |
901 | MuxDriver *d = s->opaque; | |
902 | ||
903 | if (d->mux_cnt >= MAX_MUX) { | |
904 | goto unavailable; | |
905 | } | |
906 | ||
907 | d->backends[d->mux_cnt] = b; | |
908 | tag = d->mux_cnt++; | |
909 | } else if (s->be) { | |
910 | goto unavailable; | |
911 | } else { | |
912 | s->be = b; | |
913 | } | |
914 | ||
915 | b->fe_open = false; | |
916 | b->tag = tag; | |
917 | b->chr = s; | |
918 | return true; | |
919 | ||
920 | unavailable: | |
921 | error_setg(errp, QERR_DEVICE_IN_USE, s->label); | |
922 | return false; | |
923 | } | |
924 | ||
925 | static bool qemu_chr_is_busy(CharDriverState *s) | |
926 | { | |
927 | if (s->is_mux) { | |
928 | MuxDriver *d = s->opaque; | |
929 | return d->mux_cnt >= 0; | |
930 | } else { | |
931 | return s->be != NULL; | |
932 | } | |
933 | } | |
934 | ||
935 | void qemu_chr_fe_deinit(CharBackend *b) | |
936 | { | |
937 | assert(b); | |
938 | ||
939 | if (b->chr) { | |
940 | qemu_chr_fe_set_handlers(b, NULL, NULL, NULL, NULL, NULL, true); | |
941 | if (b->chr->be == b) { | |
942 | b->chr->be = NULL; | |
943 | } | |
944 | if (b->chr->is_mux) { | |
945 | MuxDriver *d = b->chr->opaque; | |
946 | d->backends[b->tag] = NULL; | |
947 | } | |
948 | b->chr = NULL; | |
949 | } | |
950 | } | |
951 | ||
952 | void qemu_chr_fe_set_handlers(CharBackend *b, | |
953 | IOCanReadHandler *fd_can_read, | |
954 | IOReadHandler *fd_read, | |
955 | IOEventHandler *fd_event, | |
956 | void *opaque, | |
957 | GMainContext *context, | |
958 | bool set_open) | |
959 | { | |
960 | CharDriverState *s; | |
961 | int fe_open; | |
962 | ||
963 | s = b->chr; | |
964 | if (!s) { | |
965 | return; | |
966 | } | |
967 | ||
968 | if (!opaque && !fd_can_read && !fd_read && !fd_event) { | |
969 | fe_open = 0; | |
970 | remove_fd_in_watch(s); | |
971 | } else { | |
972 | fe_open = 1; | |
973 | } | |
974 | b->chr_can_read = fd_can_read; | |
975 | b->chr_read = fd_read; | |
976 | b->chr_event = fd_event; | |
977 | b->opaque = opaque; | |
978 | if (s->chr_update_read_handler) { | |
979 | s->chr_update_read_handler(s, context); | |
980 | } | |
981 | ||
982 | if (set_open) { | |
983 | qemu_chr_fe_set_open(b, fe_open); | |
984 | } | |
985 | ||
986 | if (fe_open) { | |
987 | qemu_chr_fe_take_focus(b); | |
988 | /* We're connecting to an already opened device, so let's make sure we | |
989 | also get the open event */ | |
990 | if (s->be_open) { | |
991 | qemu_chr_be_generic_open(s); | |
992 | } | |
993 | } | |
994 | ||
995 | if (s->is_mux) { | |
996 | mux_chr_set_handlers(s, context); | |
997 | } | |
998 | } | |
999 | ||
1000 | void qemu_chr_fe_take_focus(CharBackend *b) | |
1001 | { | |
1002 | if (!b->chr) { | |
1003 | return; | |
1004 | } | |
1005 | ||
1006 | if (b->chr->is_mux) { | |
1007 | mux_set_focus(b->chr, b->tag); | |
1008 | } | |
1009 | } | |
1010 | ||
1011 | typedef struct IOWatchPoll | |
1012 | { | |
1013 | GSource parent; | |
1014 | ||
1015 | QIOChannel *ioc; | |
1016 | GSource *src; | |
1017 | ||
1018 | IOCanReadHandler *fd_can_read; | |
1019 | GSourceFunc fd_read; | |
1020 | void *opaque; | |
1021 | GMainContext *context; | |
1022 | } IOWatchPoll; | |
1023 | ||
1024 | static IOWatchPoll *io_watch_poll_from_source(GSource *source) | |
1025 | { | |
1026 | return container_of(source, IOWatchPoll, parent); | |
1027 | } | |
1028 | ||
1029 | static gboolean io_watch_poll_prepare(GSource *source, | |
1030 | gint *timeout_) | |
1031 | { | |
1032 | IOWatchPoll *iwp = io_watch_poll_from_source(source); | |
1033 | bool now_active = iwp->fd_can_read(iwp->opaque) > 0; | |
1034 | bool was_active = iwp->src != NULL; | |
1035 | if (was_active == now_active) { | |
1036 | return FALSE; | |
1037 | } | |
1038 | ||
1039 | if (now_active) { | |
1040 | iwp->src = qio_channel_create_watch( | |
1041 | iwp->ioc, G_IO_IN | G_IO_ERR | G_IO_HUP | G_IO_NVAL); | |
1042 | g_source_set_callback(iwp->src, iwp->fd_read, iwp->opaque, NULL); | |
1043 | g_source_attach(iwp->src, iwp->context); | |
1044 | } else { | |
1045 | g_source_destroy(iwp->src); | |
1046 | g_source_unref(iwp->src); | |
1047 | iwp->src = NULL; | |
1048 | } | |
1049 | return FALSE; | |
1050 | } | |
1051 | ||
1052 | static gboolean io_watch_poll_check(GSource *source) | |
1053 | { | |
1054 | return FALSE; | |
1055 | } | |
1056 | ||
1057 | static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback, | |
1058 | gpointer user_data) | |
1059 | { | |
1060 | abort(); | |
1061 | } | |
1062 | ||
1063 | static void io_watch_poll_finalize(GSource *source) | |
1064 | { | |
1065 | /* Due to a glib bug, removing the last reference to a source | |
1066 | * inside a finalize callback causes recursive locking (and a | |
1067 | * deadlock). This is not a problem inside other callbacks, | |
1068 | * including dispatch callbacks, so we call io_remove_watch_poll | |
1069 | * to remove this source. At this point, iwp->src must | |
1070 | * be NULL, or we would leak it. | |
1071 | * | |
1072 | * This would be solved much more elegantly by child sources, | |
1073 | * but we support older glib versions that do not have them. | |
1074 | */ | |
1075 | IOWatchPoll *iwp = io_watch_poll_from_source(source); | |
1076 | assert(iwp->src == NULL); | |
1077 | } | |
1078 | ||
1079 | static GSourceFuncs io_watch_poll_funcs = { | |
1080 | .prepare = io_watch_poll_prepare, | |
1081 | .check = io_watch_poll_check, | |
1082 | .dispatch = io_watch_poll_dispatch, | |
1083 | .finalize = io_watch_poll_finalize, | |
1084 | }; | |
1085 | ||
1086 | /* Can only be used for read */ | |
1087 | static guint io_add_watch_poll(CharDriverState *chr, | |
1088 | QIOChannel *ioc, | |
1089 | IOCanReadHandler *fd_can_read, | |
1090 | QIOChannelFunc fd_read, | |
1091 | gpointer user_data, | |
1092 | GMainContext *context) | |
1093 | { | |
1094 | IOWatchPoll *iwp; | |
1095 | int tag; | |
1096 | char *name; | |
1097 | ||
1098 | iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs, | |
1099 | sizeof(IOWatchPoll)); | |
1100 | iwp->fd_can_read = fd_can_read; | |
1101 | iwp->opaque = user_data; | |
1102 | iwp->ioc = ioc; | |
1103 | iwp->fd_read = (GSourceFunc) fd_read; | |
1104 | iwp->src = NULL; | |
1105 | iwp->context = context; | |
1106 | ||
1107 | name = g_strdup_printf("chardev-iowatch-%s", chr->label); | |
1108 | g_source_set_name((GSource *)iwp, name); | |
1109 | g_free(name); | |
1110 | ||
1111 | tag = g_source_attach(&iwp->parent, context); | |
1112 | g_source_unref(&iwp->parent); | |
1113 | return tag; | |
1114 | } | |
1115 | ||
1116 | static void io_remove_watch_poll(guint tag) | |
1117 | { | |
1118 | GSource *source; | |
1119 | IOWatchPoll *iwp; | |
1120 | ||
1121 | g_return_if_fail (tag > 0); | |
1122 | ||
1123 | source = g_main_context_find_source_by_id(NULL, tag); | |
1124 | g_return_if_fail (source != NULL); | |
1125 | ||
1126 | iwp = io_watch_poll_from_source(source); | |
1127 | if (iwp->src) { | |
1128 | g_source_destroy(iwp->src); | |
1129 | g_source_unref(iwp->src); | |
1130 | iwp->src = NULL; | |
1131 | } | |
1132 | g_source_destroy(&iwp->parent); | |
1133 | } | |
1134 | ||
1135 | static void remove_fd_in_watch(CharDriverState *chr) | |
1136 | { | |
1137 | if (chr->fd_in_tag) { | |
1138 | io_remove_watch_poll(chr->fd_in_tag); | |
1139 | chr->fd_in_tag = 0; | |
1140 | } | |
1141 | } | |
1142 | ||
1143 | ||
1144 | static int io_channel_send_full(QIOChannel *ioc, | |
1145 | const void *buf, size_t len, | |
1146 | int *fds, size_t nfds) | |
1147 | { | |
1148 | size_t offset = 0; | |
1149 | ||
1150 | while (offset < len) { | |
1151 | ssize_t ret = 0; | |
1152 | struct iovec iov = { .iov_base = (char *)buf + offset, | |
1153 | .iov_len = len - offset }; | |
1154 | ||
1155 | ret = qio_channel_writev_full( | |
1156 | ioc, &iov, 1, | |
1157 | fds, nfds, NULL); | |
1158 | if (ret == QIO_CHANNEL_ERR_BLOCK) { | |
1159 | if (offset) { | |
1160 | return offset; | |
1161 | } | |
1162 | ||
1163 | errno = EAGAIN; | |
1164 | return -1; | |
1165 | } else if (ret < 0) { | |
1166 | errno = EINVAL; | |
1167 | return -1; | |
1168 | } | |
1169 | ||
1170 | offset += ret; | |
1171 | } | |
1172 | ||
1173 | return offset; | |
1174 | } | |
1175 | ||
1176 | ||
1177 | #ifndef _WIN32 | |
1178 | static int io_channel_send(QIOChannel *ioc, const void *buf, size_t len) | |
1179 | { | |
1180 | return io_channel_send_full(ioc, buf, len, NULL, 0); | |
1181 | } | |
1182 | ||
1183 | ||
1184 | typedef struct FDCharDriver { | |
1185 | CharDriverState *chr; | |
1186 | QIOChannel *ioc_in, *ioc_out; | |
1187 | int max_size; | |
1188 | } FDCharDriver; | |
1189 | ||
1190 | /* Called with chr_write_lock held. */ | |
1191 | static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len) | |
1192 | { | |
1193 | FDCharDriver *s = chr->opaque; | |
1194 | ||
1195 | return io_channel_send(s->ioc_out, buf, len); | |
1196 | } | |
1197 | ||
1198 | static gboolean fd_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque) | |
1199 | { | |
1200 | CharDriverState *chr = opaque; | |
1201 | FDCharDriver *s = chr->opaque; | |
1202 | int len; | |
1203 | uint8_t buf[READ_BUF_LEN]; | |
1204 | ssize_t ret; | |
1205 | ||
1206 | len = sizeof(buf); | |
1207 | if (len > s->max_size) { | |
1208 | len = s->max_size; | |
1209 | } | |
1210 | if (len == 0) { | |
1211 | return TRUE; | |
1212 | } | |
1213 | ||
1214 | ret = qio_channel_read( | |
1215 | chan, (gchar *)buf, len, NULL); | |
1216 | if (ret == 0) { | |
1217 | remove_fd_in_watch(chr); | |
1218 | qemu_chr_be_event(chr, CHR_EVENT_CLOSED); | |
1219 | return FALSE; | |
1220 | } | |
1221 | if (ret > 0) { | |
1222 | qemu_chr_be_write(chr, buf, ret); | |
1223 | } | |
1224 | ||
1225 | return TRUE; | |
1226 | } | |
1227 | ||
1228 | static int fd_chr_read_poll(void *opaque) | |
1229 | { | |
1230 | CharDriverState *chr = opaque; | |
1231 | FDCharDriver *s = chr->opaque; | |
1232 | ||
1233 | s->max_size = qemu_chr_be_can_write(chr); | |
1234 | return s->max_size; | |
1235 | } | |
1236 | ||
1237 | static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond) | |
1238 | { | |
1239 | FDCharDriver *s = chr->opaque; | |
1240 | return qio_channel_create_watch(s->ioc_out, cond); | |
1241 | } | |
1242 | ||
1243 | static void fd_chr_update_read_handler(CharDriverState *chr, | |
1244 | GMainContext *context) | |
1245 | { | |
1246 | FDCharDriver *s = chr->opaque; | |
1247 | ||
1248 | remove_fd_in_watch(chr); | |
1249 | if (s->ioc_in) { | |
1250 | chr->fd_in_tag = io_add_watch_poll(chr, s->ioc_in, | |
1251 | fd_chr_read_poll, | |
1252 | fd_chr_read, chr, | |
1253 | context); | |
1254 | } | |
1255 | } | |
1256 | ||
1257 | static void fd_chr_free(struct CharDriverState *chr) | |
1258 | { | |
1259 | FDCharDriver *s = chr->opaque; | |
1260 | ||
1261 | remove_fd_in_watch(chr); | |
1262 | if (s->ioc_in) { | |
1263 | object_unref(OBJECT(s->ioc_in)); | |
1264 | } | |
1265 | if (s->ioc_out) { | |
1266 | object_unref(OBJECT(s->ioc_out)); | |
1267 | } | |
1268 | ||
1269 | g_free(s); | |
1270 | qemu_chr_be_event(chr, CHR_EVENT_CLOSED); | |
1271 | } | |
1272 | ||
1273 | /* open a character device to a unix fd */ | |
1274 | static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out, | |
1275 | ChardevCommon *backend, Error **errp) | |
1276 | { | |
1277 | CharDriverState *chr; | |
1278 | FDCharDriver *s; | |
1279 | char *name; | |
1280 | ||
1281 | chr = qemu_chr_alloc(backend, errp); | |
1282 | if (!chr) { | |
1283 | return NULL; | |
1284 | } | |
1285 | s = g_new0(FDCharDriver, 1); | |
1286 | s->ioc_in = QIO_CHANNEL(qio_channel_file_new_fd(fd_in)); | |
1287 | name = g_strdup_printf("chardev-file-in-%s", chr->label); | |
1288 | qio_channel_set_name(QIO_CHANNEL(s->ioc_in), name); | |
1289 | g_free(name); | |
1290 | s->ioc_out = QIO_CHANNEL(qio_channel_file_new_fd(fd_out)); | |
1291 | name = g_strdup_printf("chardev-file-out-%s", chr->label); | |
1292 | qio_channel_set_name(QIO_CHANNEL(s->ioc_out), name); | |
1293 | g_free(name); | |
1294 | qemu_set_nonblock(fd_out); | |
1295 | s->chr = chr; | |
1296 | chr->opaque = s; | |
1297 | chr->chr_add_watch = fd_chr_add_watch; | |
1298 | chr->chr_write = fd_chr_write; | |
1299 | chr->chr_update_read_handler = fd_chr_update_read_handler; | |
1300 | chr->chr_free = fd_chr_free; | |
1301 | ||
1302 | return chr; | |
1303 | } | |
1304 | ||
1305 | static CharDriverState *qemu_chr_open_pipe(const char *id, | |
1306 | ChardevBackend *backend, | |
1307 | ChardevReturn *ret, | |
1308 | bool *be_opened, | |
1309 | Error **errp) | |
1310 | { | |
1311 | ChardevHostdev *opts = backend->u.pipe.data; | |
1312 | int fd_in, fd_out; | |
1313 | char *filename_in; | |
1314 | char *filename_out; | |
1315 | const char *filename = opts->device; | |
1316 | ChardevCommon *common = qapi_ChardevHostdev_base(opts); | |
1317 | ||
1318 | ||
1319 | filename_in = g_strdup_printf("%s.in", filename); | |
1320 | filename_out = g_strdup_printf("%s.out", filename); | |
1321 | TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY)); | |
1322 | TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY)); | |
1323 | g_free(filename_in); | |
1324 | g_free(filename_out); | |
1325 | if (fd_in < 0 || fd_out < 0) { | |
1326 | if (fd_in >= 0) | |
1327 | close(fd_in); | |
1328 | if (fd_out >= 0) | |
1329 | close(fd_out); | |
1330 | TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY)); | |
1331 | if (fd_in < 0) { | |
1332 | error_setg_file_open(errp, errno, filename); | |
1333 | return NULL; | |
1334 | } | |
1335 | } | |
1336 | return qemu_chr_open_fd(fd_in, fd_out, common, errp); | |
1337 | } | |
1338 | ||
1339 | /* init terminal so that we can grab keys */ | |
1340 | static struct termios oldtty; | |
1341 | static int old_fd0_flags; | |
1342 | static bool stdio_in_use; | |
1343 | static bool stdio_allow_signal; | |
1344 | static bool stdio_echo_state; | |
1345 | ||
1346 | static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo); | |
1347 | ||
1348 | static void term_exit(void) | |
1349 | { | |
1350 | tcsetattr (0, TCSANOW, &oldtty); | |
1351 | fcntl(0, F_SETFL, old_fd0_flags); | |
1352 | } | |
1353 | ||
1354 | static void term_stdio_handler(int sig) | |
1355 | { | |
1356 | /* restore echo after resume from suspend. */ | |
1357 | qemu_chr_set_echo_stdio(NULL, stdio_echo_state); | |
1358 | } | |
1359 | ||
1360 | static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo) | |
1361 | { | |
1362 | struct termios tty; | |
1363 | ||
1364 | stdio_echo_state = echo; | |
1365 | tty = oldtty; | |
1366 | if (!echo) { | |
1367 | tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP | |
1368 | |INLCR|IGNCR|ICRNL|IXON); | |
1369 | tty.c_oflag |= OPOST; | |
1370 | tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN); | |
1371 | tty.c_cflag &= ~(CSIZE|PARENB); | |
1372 | tty.c_cflag |= CS8; | |
1373 | tty.c_cc[VMIN] = 1; | |
1374 | tty.c_cc[VTIME] = 0; | |
1375 | } | |
1376 | if (!stdio_allow_signal) | |
1377 | tty.c_lflag &= ~ISIG; | |
1378 | ||
1379 | tcsetattr (0, TCSANOW, &tty); | |
1380 | } | |
1381 | ||
1382 | static void qemu_chr_free_stdio(struct CharDriverState *chr) | |
1383 | { | |
1384 | term_exit(); | |
1385 | fd_chr_free(chr); | |
1386 | } | |
1387 | ||
1388 | static CharDriverState *qemu_chr_open_stdio(const char *id, | |
1389 | ChardevBackend *backend, | |
1390 | ChardevReturn *ret, | |
1391 | bool *be_opened, | |
1392 | Error **errp) | |
1393 | { | |
1394 | ChardevStdio *opts = backend->u.stdio.data; | |
1395 | CharDriverState *chr; | |
1396 | struct sigaction act; | |
1397 | ChardevCommon *common = qapi_ChardevStdio_base(opts); | |
1398 | ||
1399 | if (is_daemonized()) { | |
1400 | error_setg(errp, "cannot use stdio with -daemonize"); | |
1401 | return NULL; | |
1402 | } | |
1403 | ||
1404 | if (stdio_in_use) { | |
1405 | error_setg(errp, "cannot use stdio by multiple character devices"); | |
1406 | return NULL; | |
1407 | } | |
1408 | ||
1409 | stdio_in_use = true; | |
1410 | old_fd0_flags = fcntl(0, F_GETFL); | |
1411 | tcgetattr(0, &oldtty); | |
1412 | qemu_set_nonblock(0); | |
1413 | atexit(term_exit); | |
1414 | ||
1415 | memset(&act, 0, sizeof(act)); | |
1416 | act.sa_handler = term_stdio_handler; | |
1417 | sigaction(SIGCONT, &act, NULL); | |
1418 | ||
1419 | chr = qemu_chr_open_fd(0, 1, common, errp); | |
1420 | if (!chr) { | |
1421 | return NULL; | |
1422 | } | |
1423 | chr->chr_free = qemu_chr_free_stdio; | |
1424 | chr->chr_set_echo = qemu_chr_set_echo_stdio; | |
1425 | if (opts->has_signal) { | |
1426 | stdio_allow_signal = opts->signal; | |
1427 | } | |
1428 | qemu_chr_set_echo_stdio(chr, false); | |
1429 | ||
1430 | return chr; | |
1431 | } | |
1432 | ||
1433 | #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \ | |
1434 | || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \ | |
1435 | || defined(__GLIBC__) | |
1436 | ||
1437 | #define HAVE_CHARDEV_SERIAL 1 | |
1438 | #define HAVE_CHARDEV_PTY 1 | |
1439 | ||
1440 | typedef struct { | |
1441 | QIOChannel *ioc; | |
1442 | int read_bytes; | |
1443 | ||
1444 | /* Protected by the CharDriverState chr_write_lock. */ | |
1445 | int connected; | |
1446 | guint timer_tag; | |
1447 | guint open_tag; | |
1448 | } PtyCharDriver; | |
1449 | ||
1450 | static void pty_chr_update_read_handler_locked(CharDriverState *chr); | |
1451 | static void pty_chr_state(CharDriverState *chr, int connected); | |
1452 | ||
1453 | static gboolean pty_chr_timer(gpointer opaque) | |
1454 | { | |
1455 | struct CharDriverState *chr = opaque; | |
1456 | PtyCharDriver *s = chr->opaque; | |
1457 | ||
1458 | qemu_mutex_lock(&chr->chr_write_lock); | |
1459 | s->timer_tag = 0; | |
1460 | s->open_tag = 0; | |
1461 | if (!s->connected) { | |
1462 | /* Next poll ... */ | |
1463 | pty_chr_update_read_handler_locked(chr); | |
1464 | } | |
1465 | qemu_mutex_unlock(&chr->chr_write_lock); | |
1466 | return FALSE; | |
1467 | } | |
1468 | ||
1469 | /* Called with chr_write_lock held. */ | |
1470 | static void pty_chr_rearm_timer(CharDriverState *chr, int ms) | |
1471 | { | |
1472 | PtyCharDriver *s = chr->opaque; | |
1473 | char *name; | |
1474 | ||
1475 | if (s->timer_tag) { | |
1476 | g_source_remove(s->timer_tag); | |
1477 | s->timer_tag = 0; | |
1478 | } | |
1479 | ||
1480 | if (ms == 1000) { | |
1481 | name = g_strdup_printf("pty-timer-secs-%s", chr->label); | |
1482 | s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr); | |
1483 | } else { | |
1484 | name = g_strdup_printf("pty-timer-ms-%s", chr->label); | |
1485 | s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr); | |
1486 | } | |
1487 | g_source_set_name_by_id(s->timer_tag, name); | |
1488 | g_free(name); | |
1489 | } | |
1490 | ||
1491 | /* Called with chr_write_lock held. */ | |
1492 | static void pty_chr_update_read_handler_locked(CharDriverState *chr) | |
1493 | { | |
1494 | PtyCharDriver *s = chr->opaque; | |
1495 | GPollFD pfd; | |
1496 | int rc; | |
1497 | QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc); | |
1498 | ||
1499 | pfd.fd = fioc->fd; | |
1500 | pfd.events = G_IO_OUT; | |
1501 | pfd.revents = 0; | |
1502 | do { | |
1503 | rc = g_poll(&pfd, 1, 0); | |
1504 | } while (rc == -1 && errno == EINTR); | |
1505 | assert(rc >= 0); | |
1506 | ||
1507 | if (pfd.revents & G_IO_HUP) { | |
1508 | pty_chr_state(chr, 0); | |
1509 | } else { | |
1510 | pty_chr_state(chr, 1); | |
1511 | } | |
1512 | } | |
1513 | ||
1514 | static void pty_chr_update_read_handler(CharDriverState *chr, | |
1515 | GMainContext *context) | |
1516 | { | |
1517 | qemu_mutex_lock(&chr->chr_write_lock); | |
1518 | pty_chr_update_read_handler_locked(chr); | |
1519 | qemu_mutex_unlock(&chr->chr_write_lock); | |
1520 | } | |
1521 | ||
1522 | /* Called with chr_write_lock held. */ | |
1523 | static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len) | |
1524 | { | |
1525 | PtyCharDriver *s = chr->opaque; | |
1526 | ||
1527 | if (!s->connected) { | |
1528 | /* guest sends data, check for (re-)connect */ | |
1529 | pty_chr_update_read_handler_locked(chr); | |
1530 | if (!s->connected) { | |
1531 | return 0; | |
1532 | } | |
1533 | } | |
1534 | return io_channel_send(s->ioc, buf, len); | |
1535 | } | |
1536 | ||
1537 | static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond) | |
1538 | { | |
1539 | PtyCharDriver *s = chr->opaque; | |
1540 | if (!s->connected) { | |
1541 | return NULL; | |
1542 | } | |
1543 | return qio_channel_create_watch(s->ioc, cond); | |
1544 | } | |
1545 | ||
1546 | static int pty_chr_read_poll(void *opaque) | |
1547 | { | |
1548 | CharDriverState *chr = opaque; | |
1549 | PtyCharDriver *s = chr->opaque; | |
1550 | ||
1551 | s->read_bytes = qemu_chr_be_can_write(chr); | |
1552 | return s->read_bytes; | |
1553 | } | |
1554 | ||
1555 | static gboolean pty_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque) | |
1556 | { | |
1557 | CharDriverState *chr = opaque; | |
1558 | PtyCharDriver *s = chr->opaque; | |
1559 | gsize len; | |
1560 | uint8_t buf[READ_BUF_LEN]; | |
1561 | ssize_t ret; | |
1562 | ||
1563 | len = sizeof(buf); | |
1564 | if (len > s->read_bytes) | |
1565 | len = s->read_bytes; | |
1566 | if (len == 0) { | |
1567 | return TRUE; | |
1568 | } | |
1569 | ret = qio_channel_read(s->ioc, (char *)buf, len, NULL); | |
1570 | if (ret <= 0) { | |
1571 | pty_chr_state(chr, 0); | |
1572 | return FALSE; | |
1573 | } else { | |
1574 | pty_chr_state(chr, 1); | |
1575 | qemu_chr_be_write(chr, buf, ret); | |
1576 | } | |
1577 | return TRUE; | |
1578 | } | |
1579 | ||
1580 | static gboolean qemu_chr_be_generic_open_func(gpointer opaque) | |
1581 | { | |
1582 | CharDriverState *chr = opaque; | |
1583 | PtyCharDriver *s = chr->opaque; | |
1584 | ||
1585 | s->open_tag = 0; | |
1586 | qemu_chr_be_generic_open(chr); | |
1587 | return FALSE; | |
1588 | } | |
1589 | ||
1590 | /* Called with chr_write_lock held. */ | |
1591 | static void pty_chr_state(CharDriverState *chr, int connected) | |
1592 | { | |
1593 | PtyCharDriver *s = chr->opaque; | |
1594 | ||
1595 | if (!connected) { | |
1596 | if (s->open_tag) { | |
1597 | g_source_remove(s->open_tag); | |
1598 | s->open_tag = 0; | |
1599 | } | |
1600 | remove_fd_in_watch(chr); | |
1601 | s->connected = 0; | |
1602 | /* (re-)connect poll interval for idle guests: once per second. | |
1603 | * We check more frequently in case the guests sends data to | |
1604 | * the virtual device linked to our pty. */ | |
1605 | pty_chr_rearm_timer(chr, 1000); | |
1606 | } else { | |
1607 | if (s->timer_tag) { | |
1608 | g_source_remove(s->timer_tag); | |
1609 | s->timer_tag = 0; | |
1610 | } | |
1611 | if (!s->connected) { | |
1612 | g_assert(s->open_tag == 0); | |
1613 | s->connected = 1; | |
1614 | s->open_tag = g_idle_add(qemu_chr_be_generic_open_func, chr); | |
1615 | } | |
1616 | if (!chr->fd_in_tag) { | |
1617 | chr->fd_in_tag = io_add_watch_poll(chr, s->ioc, | |
1618 | pty_chr_read_poll, | |
1619 | pty_chr_read, | |
1620 | chr, NULL); | |
1621 | } | |
1622 | } | |
1623 | } | |
1624 | ||
1625 | static void pty_chr_free(struct CharDriverState *chr) | |
1626 | { | |
1627 | PtyCharDriver *s = chr->opaque; | |
1628 | ||
1629 | qemu_mutex_lock(&chr->chr_write_lock); | |
1630 | pty_chr_state(chr, 0); | |
1631 | object_unref(OBJECT(s->ioc)); | |
1632 | if (s->timer_tag) { | |
1633 | g_source_remove(s->timer_tag); | |
1634 | s->timer_tag = 0; | |
1635 | } | |
1636 | qemu_mutex_unlock(&chr->chr_write_lock); | |
1637 | g_free(s); | |
1638 | qemu_chr_be_event(chr, CHR_EVENT_CLOSED); | |
1639 | } | |
1640 | ||
1641 | static CharDriverState *qemu_chr_open_pty(const char *id, | |
1642 | ChardevBackend *backend, | |
1643 | ChardevReturn *ret, | |
1644 | bool *be_opened, | |
1645 | Error **errp) | |
1646 | { | |
1647 | CharDriverState *chr; | |
1648 | PtyCharDriver *s; | |
1649 | int master_fd, slave_fd; | |
1650 | char pty_name[PATH_MAX]; | |
1651 | ChardevCommon *common = backend->u.pty.data; | |
1652 | char *name; | |
1653 | ||
1654 | master_fd = qemu_openpty_raw(&slave_fd, pty_name); | |
1655 | if (master_fd < 0) { | |
1656 | error_setg_errno(errp, errno, "Failed to create PTY"); | |
1657 | return NULL; | |
1658 | } | |
1659 | ||
1660 | close(slave_fd); | |
1661 | qemu_set_nonblock(master_fd); | |
1662 | ||
1663 | chr = qemu_chr_alloc(common, errp); | |
1664 | if (!chr) { | |
1665 | close(master_fd); | |
1666 | return NULL; | |
1667 | } | |
1668 | ||
1669 | chr->filename = g_strdup_printf("pty:%s", pty_name); | |
1670 | ret->pty = g_strdup(pty_name); | |
1671 | ret->has_pty = true; | |
1672 | ||
1673 | fprintf(stderr, "char device redirected to %s (label %s)\n", | |
1674 | pty_name, id); | |
1675 | ||
1676 | s = g_new0(PtyCharDriver, 1); | |
1677 | chr->opaque = s; | |
1678 | chr->chr_write = pty_chr_write; | |
1679 | chr->chr_update_read_handler = pty_chr_update_read_handler; | |
1680 | chr->chr_free = pty_chr_free; | |
1681 | chr->chr_add_watch = pty_chr_add_watch; | |
1682 | *be_opened = false; | |
1683 | ||
1684 | s->ioc = QIO_CHANNEL(qio_channel_file_new_fd(master_fd)); | |
1685 | name = g_strdup_printf("chardev-pty-%s", chr->label); | |
1686 | qio_channel_set_name(QIO_CHANNEL(s->ioc), name); | |
1687 | g_free(name); | |
1688 | s->timer_tag = 0; | |
1689 | ||
1690 | return chr; | |
1691 | } | |
1692 | ||
1693 | static void tty_serial_init(int fd, int speed, | |
1694 | int parity, int data_bits, int stop_bits) | |
1695 | { | |
1696 | struct termios tty; | |
1697 | speed_t spd; | |
1698 | ||
1699 | #if 0 | |
1700 | printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n", | |
1701 | speed, parity, data_bits, stop_bits); | |
1702 | #endif | |
1703 | tcgetattr (fd, &tty); | |
1704 | ||
1705 | #define check_speed(val) if (speed <= val) { spd = B##val; break; } | |
1706 | speed = speed * 10 / 11; | |
1707 | do { | |
1708 | check_speed(50); | |
1709 | check_speed(75); | |
1710 | check_speed(110); | |
1711 | check_speed(134); | |
1712 | check_speed(150); | |
1713 | check_speed(200); | |
1714 | check_speed(300); | |
1715 | check_speed(600); | |
1716 | check_speed(1200); | |
1717 | check_speed(1800); | |
1718 | check_speed(2400); | |
1719 | check_speed(4800); | |
1720 | check_speed(9600); | |
1721 | check_speed(19200); | |
1722 | check_speed(38400); | |
1723 | /* Non-Posix values follow. They may be unsupported on some systems. */ | |
1724 | check_speed(57600); | |
1725 | check_speed(115200); | |
1726 | #ifdef B230400 | |
1727 | check_speed(230400); | |
1728 | #endif | |
1729 | #ifdef B460800 | |
1730 | check_speed(460800); | |
1731 | #endif | |
1732 | #ifdef B500000 | |
1733 | check_speed(500000); | |
1734 | #endif | |
1735 | #ifdef B576000 | |
1736 | check_speed(576000); | |
1737 | #endif | |
1738 | #ifdef B921600 | |
1739 | check_speed(921600); | |
1740 | #endif | |
1741 | #ifdef B1000000 | |
1742 | check_speed(1000000); | |
1743 | #endif | |
1744 | #ifdef B1152000 | |
1745 | check_speed(1152000); | |
1746 | #endif | |
1747 | #ifdef B1500000 | |
1748 | check_speed(1500000); | |
1749 | #endif | |
1750 | #ifdef B2000000 | |
1751 | check_speed(2000000); | |
1752 | #endif | |
1753 | #ifdef B2500000 | |
1754 | check_speed(2500000); | |
1755 | #endif | |
1756 | #ifdef B3000000 | |
1757 | check_speed(3000000); | |
1758 | #endif | |
1759 | #ifdef B3500000 | |
1760 | check_speed(3500000); | |
1761 | #endif | |
1762 | #ifdef B4000000 | |
1763 | check_speed(4000000); | |
1764 | #endif | |
1765 | spd = B115200; | |
1766 | } while (0); | |
1767 | ||
1768 | cfsetispeed(&tty, spd); | |
1769 | cfsetospeed(&tty, spd); | |
1770 | ||
1771 | tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP | |
1772 | |INLCR|IGNCR|ICRNL|IXON); | |
1773 | tty.c_oflag |= OPOST; | |
1774 | tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG); | |
1775 | tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB); | |
1776 | switch(data_bits) { | |
1777 | default: | |
1778 | case 8: | |
1779 | tty.c_cflag |= CS8; | |
1780 | break; | |
1781 | case 7: | |
1782 | tty.c_cflag |= CS7; | |
1783 | break; | |
1784 | case 6: | |
1785 | tty.c_cflag |= CS6; | |
1786 | break; | |
1787 | case 5: | |
1788 | tty.c_cflag |= CS5; | |
1789 | break; | |
1790 | } | |
1791 | switch(parity) { | |
1792 | default: | |
1793 | case 'N': | |
1794 | break; | |
1795 | case 'E': | |
1796 | tty.c_cflag |= PARENB; | |
1797 | break; | |
1798 | case 'O': | |
1799 | tty.c_cflag |= PARENB | PARODD; | |
1800 | break; | |
1801 | } | |
1802 | if (stop_bits == 2) | |
1803 | tty.c_cflag |= CSTOPB; | |
1804 | ||
1805 | tcsetattr (fd, TCSANOW, &tty); | |
1806 | } | |
1807 | ||
1808 | static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg) | |
1809 | { | |
1810 | FDCharDriver *s = chr->opaque; | |
1811 | QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc_in); | |
1812 | ||
1813 | switch(cmd) { | |
1814 | case CHR_IOCTL_SERIAL_SET_PARAMS: | |
1815 | { | |
1816 | QEMUSerialSetParams *ssp = arg; | |
1817 | tty_serial_init(fioc->fd, | |
1818 | ssp->speed, ssp->parity, | |
1819 | ssp->data_bits, ssp->stop_bits); | |
1820 | } | |
1821 | break; | |
1822 | case CHR_IOCTL_SERIAL_SET_BREAK: | |
1823 | { | |
1824 | int enable = *(int *)arg; | |
1825 | if (enable) { | |
1826 | tcsendbreak(fioc->fd, 1); | |
1827 | } | |
1828 | } | |
1829 | break; | |
1830 | case CHR_IOCTL_SERIAL_GET_TIOCM: | |
1831 | { | |
1832 | int sarg = 0; | |
1833 | int *targ = (int *)arg; | |
1834 | ioctl(fioc->fd, TIOCMGET, &sarg); | |
1835 | *targ = 0; | |
1836 | if (sarg & TIOCM_CTS) | |
1837 | *targ |= CHR_TIOCM_CTS; | |
1838 | if (sarg & TIOCM_CAR) | |
1839 | *targ |= CHR_TIOCM_CAR; | |
1840 | if (sarg & TIOCM_DSR) | |
1841 | *targ |= CHR_TIOCM_DSR; | |
1842 | if (sarg & TIOCM_RI) | |
1843 | *targ |= CHR_TIOCM_RI; | |
1844 | if (sarg & TIOCM_DTR) | |
1845 | *targ |= CHR_TIOCM_DTR; | |
1846 | if (sarg & TIOCM_RTS) | |
1847 | *targ |= CHR_TIOCM_RTS; | |
1848 | } | |
1849 | break; | |
1850 | case CHR_IOCTL_SERIAL_SET_TIOCM: | |
1851 | { | |
1852 | int sarg = *(int *)arg; | |
1853 | int targ = 0; | |
1854 | ioctl(fioc->fd, TIOCMGET, &targ); | |
1855 | targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR | |
1856 | | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS); | |
1857 | if (sarg & CHR_TIOCM_CTS) | |
1858 | targ |= TIOCM_CTS; | |
1859 | if (sarg & CHR_TIOCM_CAR) | |
1860 | targ |= TIOCM_CAR; | |
1861 | if (sarg & CHR_TIOCM_DSR) | |
1862 | targ |= TIOCM_DSR; | |
1863 | if (sarg & CHR_TIOCM_RI) | |
1864 | targ |= TIOCM_RI; | |
1865 | if (sarg & CHR_TIOCM_DTR) | |
1866 | targ |= TIOCM_DTR; | |
1867 | if (sarg & CHR_TIOCM_RTS) | |
1868 | targ |= TIOCM_RTS; | |
1869 | ioctl(fioc->fd, TIOCMSET, &targ); | |
1870 | } | |
1871 | break; | |
1872 | default: | |
1873 | return -ENOTSUP; | |
1874 | } | |
1875 | return 0; | |
1876 | } | |
1877 | ||
1878 | static void qemu_chr_free_tty(CharDriverState *chr) | |
1879 | { | |
1880 | fd_chr_free(chr); | |
1881 | } | |
1882 | ||
1883 | static CharDriverState *qemu_chr_open_tty_fd(int fd, | |
1884 | ChardevCommon *backend, | |
1885 | bool *be_opened, | |
1886 | Error **errp) | |
1887 | { | |
1888 | CharDriverState *chr; | |
1889 | ||
1890 | tty_serial_init(fd, 115200, 'N', 8, 1); | |
1891 | chr = qemu_chr_open_fd(fd, fd, backend, errp); | |
1892 | if (!chr) { | |
1893 | return NULL; | |
1894 | } | |
1895 | chr->chr_ioctl = tty_serial_ioctl; | |
1896 | chr->chr_free = qemu_chr_free_tty; | |
1897 | return chr; | |
1898 | } | |
1899 | #endif /* __linux__ || __sun__ */ | |
1900 | ||
1901 | #if defined(__linux__) | |
1902 | ||
1903 | #define HAVE_CHARDEV_PARPORT 1 | |
1904 | ||
1905 | typedef struct { | |
1906 | int fd; | |
1907 | int mode; | |
1908 | } ParallelCharDriver; | |
1909 | ||
1910 | static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode) | |
1911 | { | |
1912 | if (s->mode != mode) { | |
1913 | int m = mode; | |
1914 | if (ioctl(s->fd, PPSETMODE, &m) < 0) | |
1915 | return 0; | |
1916 | s->mode = mode; | |
1917 | } | |
1918 | return 1; | |
1919 | } | |
1920 | ||
1921 | static int pp_ioctl(CharDriverState *chr, int cmd, void *arg) | |
1922 | { | |
1923 | ParallelCharDriver *drv = chr->opaque; | |
1924 | int fd = drv->fd; | |
1925 | uint8_t b; | |
1926 | ||
1927 | switch(cmd) { | |
1928 | case CHR_IOCTL_PP_READ_DATA: | |
1929 | if (ioctl(fd, PPRDATA, &b) < 0) | |
1930 | return -ENOTSUP; | |
1931 | *(uint8_t *)arg = b; | |
1932 | break; | |
1933 | case CHR_IOCTL_PP_WRITE_DATA: | |
1934 | b = *(uint8_t *)arg; | |
1935 | if (ioctl(fd, PPWDATA, &b) < 0) | |
1936 | return -ENOTSUP; | |
1937 | break; | |
1938 | case CHR_IOCTL_PP_READ_CONTROL: | |
1939 | if (ioctl(fd, PPRCONTROL, &b) < 0) | |
1940 | return -ENOTSUP; | |
1941 | /* Linux gives only the lowest bits, and no way to know data | |
1942 | direction! For better compatibility set the fixed upper | |
1943 | bits. */ | |
1944 | *(uint8_t *)arg = b | 0xc0; | |
1945 | break; | |
1946 | case CHR_IOCTL_PP_WRITE_CONTROL: | |
1947 | b = *(uint8_t *)arg; | |
1948 | if (ioctl(fd, PPWCONTROL, &b) < 0) | |
1949 | return -ENOTSUP; | |
1950 | break; | |
1951 | case CHR_IOCTL_PP_READ_STATUS: | |
1952 | if (ioctl(fd, PPRSTATUS, &b) < 0) | |
1953 | return -ENOTSUP; | |
1954 | *(uint8_t *)arg = b; | |
1955 | break; | |
1956 | case CHR_IOCTL_PP_DATA_DIR: | |
1957 | if (ioctl(fd, PPDATADIR, (int *)arg) < 0) | |
1958 | return -ENOTSUP; | |
1959 | break; | |
1960 | case CHR_IOCTL_PP_EPP_READ_ADDR: | |
1961 | if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) { | |
1962 | struct ParallelIOArg *parg = arg; | |
1963 | int n = read(fd, parg->buffer, parg->count); | |
1964 | if (n != parg->count) { | |
1965 | return -EIO; | |
1966 | } | |
1967 | } | |
1968 | break; | |
1969 | case CHR_IOCTL_PP_EPP_READ: | |
1970 | if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) { | |
1971 | struct ParallelIOArg *parg = arg; | |
1972 | int n = read(fd, parg->buffer, parg->count); | |
1973 | if (n != parg->count) { | |
1974 | return -EIO; | |
1975 | } | |
1976 | } | |
1977 | break; | |
1978 | case CHR_IOCTL_PP_EPP_WRITE_ADDR: | |
1979 | if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) { | |
1980 | struct ParallelIOArg *parg = arg; | |
1981 | int n = write(fd, parg->buffer, parg->count); | |
1982 | if (n != parg->count) { | |
1983 | return -EIO; | |
1984 | } | |
1985 | } | |
1986 | break; | |
1987 | case CHR_IOCTL_PP_EPP_WRITE: | |
1988 | if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) { | |
1989 | struct ParallelIOArg *parg = arg; | |
1990 | int n = write(fd, parg->buffer, parg->count); | |
1991 | if (n != parg->count) { | |
1992 | return -EIO; | |
1993 | } | |
1994 | } | |
1995 | break; | |
1996 | default: | |
1997 | return -ENOTSUP; | |
1998 | } | |
1999 | return 0; | |
2000 | } | |
2001 | ||
2002 | static void pp_free(CharDriverState *chr) | |
2003 | { | |
2004 | ParallelCharDriver *drv = chr->opaque; | |
2005 | int fd = drv->fd; | |
2006 | ||
2007 | pp_hw_mode(drv, IEEE1284_MODE_COMPAT); | |
2008 | ioctl(fd, PPRELEASE); | |
2009 | close(fd); | |
2010 | g_free(drv); | |
2011 | qemu_chr_be_event(chr, CHR_EVENT_CLOSED); | |
2012 | } | |
2013 | ||
2014 | static CharDriverState *qemu_chr_open_pp_fd(int fd, | |
2015 | ChardevCommon *backend, | |
2016 | bool *be_opened, | |
2017 | Error **errp) | |
2018 | { | |
2019 | CharDriverState *chr; | |
2020 | ParallelCharDriver *drv; | |
2021 | ||
2022 | if (ioctl(fd, PPCLAIM) < 0) { | |
2023 | error_setg_errno(errp, errno, "not a parallel port"); | |
2024 | close(fd); | |
2025 | return NULL; | |
2026 | } | |
2027 | ||
2028 | chr = qemu_chr_alloc(backend, errp); | |
2029 | if (!chr) { | |
2030 | return NULL; | |
2031 | } | |
2032 | ||
2033 | drv = g_new0(ParallelCharDriver, 1); | |
2034 | chr->opaque = drv; | |
2035 | chr->chr_write = null_chr_write; | |
2036 | chr->chr_ioctl = pp_ioctl; | |
2037 | chr->chr_free = pp_free; | |
2038 | ||
2039 | drv->fd = fd; | |
2040 | drv->mode = IEEE1284_MODE_COMPAT; | |
2041 | ||
2042 | return chr; | |
2043 | } | |
2044 | #endif /* __linux__ */ | |
2045 | ||
2046 | #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__) | |
2047 | ||
2048 | #define HAVE_CHARDEV_PARPORT 1 | |
2049 | ||
2050 | static int pp_ioctl(CharDriverState *chr, int cmd, void *arg) | |
2051 | { | |
2052 | int fd = (int)(intptr_t)chr->opaque; | |
2053 | uint8_t b; | |
2054 | ||
2055 | switch(cmd) { | |
2056 | case CHR_IOCTL_PP_READ_DATA: | |
2057 | if (ioctl(fd, PPIGDATA, &b) < 0) | |
2058 | return -ENOTSUP; | |
2059 | *(uint8_t *)arg = b; | |
2060 | break; | |
2061 | case CHR_IOCTL_PP_WRITE_DATA: | |
2062 | b = *(uint8_t *)arg; | |
2063 | if (ioctl(fd, PPISDATA, &b) < 0) | |
2064 | return -ENOTSUP; | |
2065 | break; | |
2066 | case CHR_IOCTL_PP_READ_CONTROL: | |
2067 | if (ioctl(fd, PPIGCTRL, &b) < 0) | |
2068 | return -ENOTSUP; | |
2069 | *(uint8_t *)arg = b; | |
2070 | break; | |
2071 | case CHR_IOCTL_PP_WRITE_CONTROL: | |
2072 | b = *(uint8_t *)arg; | |
2073 | if (ioctl(fd, PPISCTRL, &b) < 0) | |
2074 | return -ENOTSUP; | |
2075 | break; | |
2076 | case CHR_IOCTL_PP_READ_STATUS: | |
2077 | if (ioctl(fd, PPIGSTATUS, &b) < 0) | |
2078 | return -ENOTSUP; | |
2079 | *(uint8_t *)arg = b; | |
2080 | break; | |
2081 | default: | |
2082 | return -ENOTSUP; | |
2083 | } | |
2084 | return 0; | |
2085 | } | |
2086 | ||
2087 | static CharDriverState *qemu_chr_open_pp_fd(int fd, | |
2088 | ChardevCommon *backend, | |
2089 | bool *be_opened, | |
2090 | Error **errp) | |
2091 | { | |
2092 | CharDriverState *chr; | |
2093 | ||
2094 | chr = qemu_chr_alloc(backend, errp); | |
2095 | if (!chr) { | |
2096 | return NULL; | |
2097 | } | |
2098 | chr->opaque = (void *)(intptr_t)fd; | |
2099 | chr->chr_write = null_chr_write; | |
2100 | chr->chr_ioctl = pp_ioctl; | |
2101 | *be_opened = false; | |
2102 | return chr; | |
2103 | } | |
2104 | #endif | |
2105 | ||
2106 | #else /* _WIN32 */ | |
2107 | ||
2108 | #define HAVE_CHARDEV_SERIAL 1 | |
2109 | ||
2110 | typedef struct { | |
2111 | int max_size; | |
2112 | HANDLE hcom, hrecv, hsend; | |
2113 | OVERLAPPED orecv; | |
2114 | BOOL fpipe; | |
2115 | DWORD len; | |
2116 | ||
2117 | /* Protected by the CharDriverState chr_write_lock. */ | |
2118 | OVERLAPPED osend; | |
2119 | } WinCharState; | |
2120 | ||
2121 | typedef struct { | |
2122 | HANDLE hStdIn; | |
2123 | HANDLE hInputReadyEvent; | |
2124 | HANDLE hInputDoneEvent; | |
2125 | HANDLE hInputThread; | |
2126 | uint8_t win_stdio_buf; | |
2127 | } WinStdioCharState; | |
2128 | ||
2129 | #define NSENDBUF 2048 | |
2130 | #define NRECVBUF 2048 | |
2131 | #define MAXCONNECT 1 | |
2132 | #define NTIMEOUT 5000 | |
2133 | ||
2134 | static int win_chr_poll(void *opaque); | |
2135 | static int win_chr_pipe_poll(void *opaque); | |
2136 | ||
2137 | static void win_chr_free(CharDriverState *chr) | |
2138 | { | |
2139 | WinCharState *s = chr->opaque; | |
2140 | ||
2141 | if (s->hsend) { | |
2142 | CloseHandle(s->hsend); | |
2143 | s->hsend = NULL; | |
2144 | } | |
2145 | if (s->hrecv) { | |
2146 | CloseHandle(s->hrecv); | |
2147 | s->hrecv = NULL; | |
2148 | } | |
2149 | if (s->hcom) { | |
2150 | CloseHandle(s->hcom); | |
2151 | s->hcom = NULL; | |
2152 | } | |
2153 | if (s->fpipe) | |
2154 | qemu_del_polling_cb(win_chr_pipe_poll, chr); | |
2155 | else | |
2156 | qemu_del_polling_cb(win_chr_poll, chr); | |
2157 | ||
2158 | qemu_chr_be_event(chr, CHR_EVENT_CLOSED); | |
2159 | } | |
2160 | ||
2161 | static int win_chr_init(CharDriverState *chr, const char *filename, Error **errp) | |
2162 | { | |
2163 | WinCharState *s = chr->opaque; | |
2164 | COMMCONFIG comcfg; | |
2165 | COMMTIMEOUTS cto = { 0, 0, 0, 0, 0}; | |
2166 | COMSTAT comstat; | |
2167 | DWORD size; | |
2168 | DWORD err; | |
2169 | ||
2170 | s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL); | |
2171 | if (!s->hsend) { | |
2172 | error_setg(errp, "Failed CreateEvent"); | |
2173 | goto fail; | |
2174 | } | |
2175 | s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL); | |
2176 | if (!s->hrecv) { | |
2177 | error_setg(errp, "Failed CreateEvent"); | |
2178 | goto fail; | |
2179 | } | |
2180 | ||
2181 | s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL, | |
2182 | OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0); | |
2183 | if (s->hcom == INVALID_HANDLE_VALUE) { | |
2184 | error_setg(errp, "Failed CreateFile (%lu)", GetLastError()); | |
2185 | s->hcom = NULL; | |
2186 | goto fail; | |
2187 | } | |
2188 | ||
2189 | if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) { | |
2190 | error_setg(errp, "Failed SetupComm"); | |
2191 | goto fail; | |
2192 | } | |
2193 | ||
2194 | ZeroMemory(&comcfg, sizeof(COMMCONFIG)); | |
2195 | size = sizeof(COMMCONFIG); | |
2196 | GetDefaultCommConfig(filename, &comcfg, &size); | |
2197 | comcfg.dcb.DCBlength = sizeof(DCB); | |
2198 | CommConfigDialog(filename, NULL, &comcfg); | |
2199 | ||
2200 | if (!SetCommState(s->hcom, &comcfg.dcb)) { | |
2201 | error_setg(errp, "Failed SetCommState"); | |
2202 | goto fail; | |
2203 | } | |
2204 | ||
2205 | if (!SetCommMask(s->hcom, EV_ERR)) { | |
2206 | error_setg(errp, "Failed SetCommMask"); | |
2207 | goto fail; | |
2208 | } | |
2209 | ||
2210 | cto.ReadIntervalTimeout = MAXDWORD; | |
2211 | if (!SetCommTimeouts(s->hcom, &cto)) { | |
2212 | error_setg(errp, "Failed SetCommTimeouts"); | |
2213 | goto fail; | |
2214 | } | |
2215 | ||
2216 | if (!ClearCommError(s->hcom, &err, &comstat)) { | |
2217 | error_setg(errp, "Failed ClearCommError"); | |
2218 | goto fail; | |
2219 | } | |
2220 | qemu_add_polling_cb(win_chr_poll, chr); | |
2221 | return 0; | |
2222 | ||
2223 | fail: | |
2224 | win_chr_free(chr); | |
2225 | return -1; | |
2226 | } | |
2227 | ||
2228 | /* Called with chr_write_lock held. */ | |
2229 | static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1) | |
2230 | { | |
2231 | WinCharState *s = chr->opaque; | |
2232 | DWORD len, ret, size, err; | |
2233 | ||
2234 | len = len1; | |
2235 | ZeroMemory(&s->osend, sizeof(s->osend)); | |
2236 | s->osend.hEvent = s->hsend; | |
2237 | while (len > 0) { | |
2238 | if (s->hsend) | |
2239 | ret = WriteFile(s->hcom, buf, len, &size, &s->osend); | |
2240 | else | |
2241 | ret = WriteFile(s->hcom, buf, len, &size, NULL); | |
2242 | if (!ret) { | |
2243 | err = GetLastError(); | |
2244 | if (err == ERROR_IO_PENDING) { | |
2245 | ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE); | |
2246 | if (ret) { | |
2247 | buf += size; | |
2248 | len -= size; | |
2249 | } else { | |
2250 | break; | |
2251 | } | |
2252 | } else { | |
2253 | break; | |
2254 | } | |
2255 | } else { | |
2256 | buf += size; | |
2257 | len -= size; | |
2258 | } | |
2259 | } | |
2260 | return len1 - len; | |
2261 | } | |
2262 | ||
2263 | static int win_chr_read_poll(CharDriverState *chr) | |
2264 | { | |
2265 | WinCharState *s = chr->opaque; | |
2266 | ||
2267 | s->max_size = qemu_chr_be_can_write(chr); | |
2268 | return s->max_size; | |
2269 | } | |
2270 | ||
2271 | static void win_chr_readfile(CharDriverState *chr) | |
2272 | { | |
2273 | WinCharState *s = chr->opaque; | |
2274 | int ret, err; | |
2275 | uint8_t buf[READ_BUF_LEN]; | |
2276 | DWORD size; | |
2277 | ||
2278 | ZeroMemory(&s->orecv, sizeof(s->orecv)); | |
2279 | s->orecv.hEvent = s->hrecv; | |
2280 | ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv); | |
2281 | if (!ret) { | |
2282 | err = GetLastError(); | |
2283 | if (err == ERROR_IO_PENDING) { | |
2284 | ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE); | |
2285 | } | |
2286 | } | |
2287 | ||
2288 | if (size > 0) { | |
2289 | qemu_chr_be_write(chr, buf, size); | |
2290 | } | |
2291 | } | |
2292 | ||
2293 | static void win_chr_read(CharDriverState *chr) | |
2294 | { | |
2295 | WinCharState *s = chr->opaque; | |
2296 | ||
2297 | if (s->len > s->max_size) | |
2298 | s->len = s->max_size; | |
2299 | if (s->len == 0) | |
2300 | return; | |
2301 | ||
2302 | win_chr_readfile(chr); | |
2303 | } | |
2304 | ||
2305 | static int win_chr_poll(void *opaque) | |
2306 | { | |
2307 | CharDriverState *chr = opaque; | |
2308 | WinCharState *s = chr->opaque; | |
2309 | COMSTAT status; | |
2310 | DWORD comerr; | |
2311 | ||
2312 | ClearCommError(s->hcom, &comerr, &status); | |
2313 | if (status.cbInQue > 0) { | |
2314 | s->len = status.cbInQue; | |
2315 | win_chr_read_poll(chr); | |
2316 | win_chr_read(chr); | |
2317 | return 1; | |
2318 | } | |
2319 | return 0; | |
2320 | } | |
2321 | ||
2322 | static CharDriverState *qemu_chr_open_win_path(const char *filename, | |
2323 | ChardevCommon *backend, | |
2324 | Error **errp) | |
2325 | { | |
2326 | CharDriverState *chr; | |
2327 | WinCharState *s; | |
2328 | ||
2329 | chr = qemu_chr_alloc(backend, errp); | |
2330 | if (!chr) { | |
2331 | return NULL; | |
2332 | } | |
2333 | s = g_new0(WinCharState, 1); | |
2334 | chr->opaque = s; | |
2335 | chr->chr_write = win_chr_write; | |
2336 | chr->chr_free = win_chr_free; | |
2337 | ||
2338 | if (win_chr_init(chr, filename, errp) < 0) { | |
2339 | g_free(s); | |
2340 | qemu_chr_free_common(chr); | |
2341 | return NULL; | |
2342 | } | |
2343 | return chr; | |
2344 | } | |
2345 | ||
2346 | static int win_chr_pipe_poll(void *opaque) | |
2347 | { | |
2348 | CharDriverState *chr = opaque; | |
2349 | WinCharState *s = chr->opaque; | |
2350 | DWORD size; | |
2351 | ||
2352 | PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL); | |
2353 | if (size > 0) { | |
2354 | s->len = size; | |
2355 | win_chr_read_poll(chr); | |
2356 | win_chr_read(chr); | |
2357 | return 1; | |
2358 | } | |
2359 | return 0; | |
2360 | } | |
2361 | ||
2362 | static int win_chr_pipe_init(CharDriverState *chr, const char *filename, | |
2363 | Error **errp) | |
2364 | { | |
2365 | WinCharState *s = chr->opaque; | |
2366 | OVERLAPPED ov; | |
2367 | int ret; | |
2368 | DWORD size; | |
2369 | char *openname; | |
2370 | ||
2371 | s->fpipe = TRUE; | |
2372 | ||
2373 | s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL); | |
2374 | if (!s->hsend) { | |
2375 | error_setg(errp, "Failed CreateEvent"); | |
2376 | goto fail; | |
2377 | } | |
2378 | s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL); | |
2379 | if (!s->hrecv) { | |
2380 | error_setg(errp, "Failed CreateEvent"); | |
2381 | goto fail; | |
2382 | } | |
2383 | ||
2384 | openname = g_strdup_printf("\\\\.\\pipe\\%s", filename); | |
2385 | s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED, | |
2386 | PIPE_TYPE_BYTE | PIPE_READMODE_BYTE | | |
2387 | PIPE_WAIT, | |
2388 | MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL); | |
2389 | g_free(openname); | |
2390 | if (s->hcom == INVALID_HANDLE_VALUE) { | |
2391 | error_setg(errp, "Failed CreateNamedPipe (%lu)", GetLastError()); | |
2392 | s->hcom = NULL; | |
2393 | goto fail; | |
2394 | } | |
2395 | ||
2396 | ZeroMemory(&ov, sizeof(ov)); | |
2397 | ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); | |
2398 | ret = ConnectNamedPipe(s->hcom, &ov); | |
2399 | if (ret) { | |
2400 | error_setg(errp, "Failed ConnectNamedPipe"); | |
2401 | goto fail; | |
2402 | } | |
2403 | ||
2404 | ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE); | |
2405 | if (!ret) { | |
2406 | error_setg(errp, "Failed GetOverlappedResult"); | |
2407 | if (ov.hEvent) { | |
2408 | CloseHandle(ov.hEvent); | |
2409 | ov.hEvent = NULL; | |
2410 | } | |
2411 | goto fail; | |
2412 | } | |
2413 | ||
2414 | if (ov.hEvent) { | |
2415 | CloseHandle(ov.hEvent); | |
2416 | ov.hEvent = NULL; | |
2417 | } | |
2418 | qemu_add_polling_cb(win_chr_pipe_poll, chr); | |
2419 | return 0; | |
2420 | ||
2421 | fail: | |
2422 | win_chr_free(chr); | |
2423 | return -1; | |
2424 | } | |
2425 | ||
2426 | ||
2427 | static CharDriverState *qemu_chr_open_pipe(const char *id, | |
2428 | ChardevBackend *backend, | |
2429 | ChardevReturn *ret, | |
2430 | bool *be_opened, | |
2431 | Error **errp) | |
2432 | { | |
2433 | ChardevHostdev *opts = backend->u.pipe.data; | |
2434 | const char *filename = opts->device; | |
2435 | CharDriverState *chr; | |
2436 | WinCharState *s; | |
2437 | ChardevCommon *common = qapi_ChardevHostdev_base(opts); | |
2438 | ||
2439 | chr = qemu_chr_alloc(common, errp); | |
2440 | if (!chr) { | |
2441 | return NULL; | |
2442 | } | |
2443 | s = g_new0(WinCharState, 1); | |
2444 | chr->opaque = s; | |
2445 | chr->chr_write = win_chr_write; | |
2446 | chr->chr_free = win_chr_free; | |
2447 | ||
2448 | if (win_chr_pipe_init(chr, filename, errp) < 0) { | |
2449 | g_free(s); | |
2450 | qemu_chr_free_common(chr); | |
2451 | return NULL; | |
2452 | } | |
2453 | return chr; | |
2454 | } | |
2455 | ||
2456 | static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out, | |
2457 | ChardevCommon *backend, | |
2458 | Error **errp) | |
2459 | { | |
2460 | CharDriverState *chr; | |
2461 | WinCharState *s; | |
2462 | ||
2463 | chr = qemu_chr_alloc(backend, errp); | |
2464 | if (!chr) { | |
2465 | return NULL; | |
2466 | } | |
2467 | s = g_new0(WinCharState, 1); | |
2468 | s->hcom = fd_out; | |
2469 | chr->opaque = s; | |
2470 | chr->chr_write = win_chr_write; | |
2471 | return chr; | |
2472 | } | |
2473 | ||
2474 | static CharDriverState *qemu_chr_open_win_con(const char *id, | |
2475 | ChardevBackend *backend, | |
2476 | ChardevReturn *ret, | |
2477 | bool *be_opened, | |
2478 | Error **errp) | |
2479 | { | |
2480 | ChardevCommon *common = backend->u.console.data; | |
2481 | return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE), | |
2482 | common, errp); | |
2483 | } | |
2484 | ||
2485 | static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len) | |
2486 | { | |
2487 | HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE); | |
2488 | DWORD dwSize; | |
2489 | int len1; | |
2490 | ||
2491 | len1 = len; | |
2492 | ||
2493 | while (len1 > 0) { | |
2494 | if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) { | |
2495 | break; | |
2496 | } | |
2497 | buf += dwSize; | |
2498 | len1 -= dwSize; | |
2499 | } | |
2500 | ||
2501 | return len - len1; | |
2502 | } | |
2503 | ||
2504 | static void win_stdio_wait_func(void *opaque) | |
2505 | { | |
2506 | CharDriverState *chr = opaque; | |
2507 | WinStdioCharState *stdio = chr->opaque; | |
2508 | INPUT_RECORD buf[4]; | |
2509 | int ret; | |
2510 | DWORD dwSize; | |
2511 | int i; | |
2512 | ||
2513 | ret = ReadConsoleInput(stdio->hStdIn, buf, ARRAY_SIZE(buf), &dwSize); | |
2514 | ||
2515 | if (!ret) { | |
2516 | /* Avoid error storm */ | |
2517 | qemu_del_wait_object(stdio->hStdIn, NULL, NULL); | |
2518 | return; | |
2519 | } | |
2520 | ||
2521 | for (i = 0; i < dwSize; i++) { | |
2522 | KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent; | |
2523 | ||
2524 | if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) { | |
2525 | int j; | |
2526 | if (kev->uChar.AsciiChar != 0) { | |
2527 | for (j = 0; j < kev->wRepeatCount; j++) { | |
2528 | if (qemu_chr_be_can_write(chr)) { | |
2529 | uint8_t c = kev->uChar.AsciiChar; | |
2530 | qemu_chr_be_write(chr, &c, 1); | |
2531 | } | |
2532 | } | |
2533 | } | |
2534 | } | |
2535 | } | |
2536 | } | |
2537 | ||
2538 | static DWORD WINAPI win_stdio_thread(LPVOID param) | |
2539 | { | |
2540 | CharDriverState *chr = param; | |
2541 | WinStdioCharState *stdio = chr->opaque; | |
2542 | int ret; | |
2543 | DWORD dwSize; | |
2544 | ||
2545 | while (1) { | |
2546 | ||
2547 | /* Wait for one byte */ | |
2548 | ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL); | |
2549 | ||
2550 | /* Exit in case of error, continue if nothing read */ | |
2551 | if (!ret) { | |
2552 | break; | |
2553 | } | |
2554 | if (!dwSize) { | |
2555 | continue; | |
2556 | } | |
2557 | ||
2558 | /* Some terminal emulator returns \r\n for Enter, just pass \n */ | |
2559 | if (stdio->win_stdio_buf == '\r') { | |
2560 | continue; | |
2561 | } | |
2562 | ||
2563 | /* Signal the main thread and wait until the byte was eaten */ | |
2564 | if (!SetEvent(stdio->hInputReadyEvent)) { | |
2565 | break; | |
2566 | } | |
2567 | if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE) | |
2568 | != WAIT_OBJECT_0) { | |
2569 | break; | |
2570 | } | |
2571 | } | |
2572 | ||
2573 | qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL); | |
2574 | return 0; | |
2575 | } | |
2576 | ||
2577 | static void win_stdio_thread_wait_func(void *opaque) | |
2578 | { | |
2579 | CharDriverState *chr = opaque; | |
2580 | WinStdioCharState *stdio = chr->opaque; | |
2581 | ||
2582 | if (qemu_chr_be_can_write(chr)) { | |
2583 | qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1); | |
2584 | } | |
2585 | ||
2586 | SetEvent(stdio->hInputDoneEvent); | |
2587 | } | |
2588 | ||
2589 | static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo) | |
2590 | { | |
2591 | WinStdioCharState *stdio = chr->opaque; | |
2592 | DWORD dwMode = 0; | |
2593 | ||
2594 | GetConsoleMode(stdio->hStdIn, &dwMode); | |
2595 | ||
2596 | if (echo) { | |
2597 | SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT); | |
2598 | } else { | |
2599 | SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT); | |
2600 | } | |
2601 | } | |
2602 | ||
2603 | static void win_stdio_free(CharDriverState *chr) | |
2604 | { | |
2605 | WinStdioCharState *stdio = chr->opaque; | |
2606 | ||
2607 | if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) { | |
2608 | CloseHandle(stdio->hInputReadyEvent); | |
2609 | } | |
2610 | if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) { | |
2611 | CloseHandle(stdio->hInputDoneEvent); | |
2612 | } | |
2613 | if (stdio->hInputThread != INVALID_HANDLE_VALUE) { | |
2614 | TerminateThread(stdio->hInputThread, 0); | |
2615 | } | |
2616 | ||
2617 | g_free(chr->opaque); | |
2618 | } | |
2619 | ||
2620 | static CharDriverState *qemu_chr_open_stdio(const char *id, | |
2621 | ChardevBackend *backend, | |
2622 | ChardevReturn *ret, | |
2623 | bool *be_opened, | |
2624 | Error **errp) | |
2625 | { | |
2626 | CharDriverState *chr; | |
2627 | WinStdioCharState *stdio; | |
2628 | DWORD dwMode; | |
2629 | int is_console = 0; | |
2630 | ChardevCommon *common = qapi_ChardevStdio_base(backend->u.stdio.data); | |
2631 | ||
2632 | chr = qemu_chr_alloc(common, errp); | |
2633 | if (!chr) { | |
2634 | return NULL; | |
2635 | } | |
2636 | stdio = g_new0(WinStdioCharState, 1); | |
2637 | ||
2638 | stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE); | |
2639 | if (stdio->hStdIn == INVALID_HANDLE_VALUE) { | |
2640 | error_setg(errp, "cannot open stdio: invalid handle"); | |
2641 | return NULL; | |
2642 | } | |
2643 | ||
2644 | is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0; | |
2645 | ||
2646 | chr->opaque = stdio; | |
2647 | chr->chr_write = win_stdio_write; | |
2648 | chr->chr_free = win_stdio_free; | |
2649 | ||
2650 | if (is_console) { | |
2651 | if (qemu_add_wait_object(stdio->hStdIn, | |
2652 | win_stdio_wait_func, chr)) { | |
2653 | error_setg(errp, "qemu_add_wait_object: failed"); | |
2654 | goto err1; | |
2655 | } | |
2656 | } else { | |
2657 | DWORD dwId; | |
2658 | ||
2659 | stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL); | |
2660 | stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL); | |
2661 | if (stdio->hInputReadyEvent == INVALID_HANDLE_VALUE | |
2662 | || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) { | |
2663 | error_setg(errp, "cannot create event"); | |
2664 | goto err2; | |
2665 | } | |
2666 | if (qemu_add_wait_object(stdio->hInputReadyEvent, | |
2667 | win_stdio_thread_wait_func, chr)) { | |
2668 | error_setg(errp, "qemu_add_wait_object: failed"); | |
2669 | goto err2; | |
2670 | } | |
2671 | stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread, | |
2672 | chr, 0, &dwId); | |
2673 | ||
2674 | if (stdio->hInputThread == INVALID_HANDLE_VALUE) { | |
2675 | error_setg(errp, "cannot create stdio thread"); | |
2676 | goto err3; | |
2677 | } | |
2678 | } | |
2679 | ||
2680 | dwMode |= ENABLE_LINE_INPUT; | |
2681 | ||
2682 | if (is_console) { | |
2683 | /* set the terminal in raw mode */ | |
2684 | /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */ | |
2685 | dwMode |= ENABLE_PROCESSED_INPUT; | |
2686 | } | |
2687 | ||
2688 | SetConsoleMode(stdio->hStdIn, dwMode); | |
2689 | ||
2690 | chr->chr_set_echo = qemu_chr_set_echo_win_stdio; | |
2691 | qemu_chr_set_echo_win_stdio(chr, false); | |
2692 | ||
2693 | return chr; | |
2694 | ||
2695 | err3: | |
2696 | qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL); | |
2697 | err2: | |
2698 | CloseHandle(stdio->hInputReadyEvent); | |
2699 | CloseHandle(stdio->hInputDoneEvent); | |
2700 | err1: | |
2701 | qemu_del_wait_object(stdio->hStdIn, NULL, NULL); | |
2702 | return NULL; | |
2703 | } | |
2704 | #endif /* !_WIN32 */ | |
2705 | ||
2706 | /***********************************************************/ | |
2707 | /* UDP Net console */ | |
2708 | ||
2709 | typedef struct { | |
2710 | QIOChannel *ioc; | |
2711 | uint8_t buf[READ_BUF_LEN]; | |
2712 | int bufcnt; | |
2713 | int bufptr; | |
2714 | int max_size; | |
2715 | } NetCharDriver; | |
2716 | ||
2717 | /* Called with chr_write_lock held. */ | |
2718 | static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len) | |
2719 | { | |
2720 | NetCharDriver *s = chr->opaque; | |
2721 | ||
2722 | return qio_channel_write( | |
2723 | s->ioc, (const char *)buf, len, NULL); | |
2724 | } | |
2725 | ||
2726 | static int udp_chr_read_poll(void *opaque) | |
2727 | { | |
2728 | CharDriverState *chr = opaque; | |
2729 | NetCharDriver *s = chr->opaque; | |
2730 | ||
2731 | s->max_size = qemu_chr_be_can_write(chr); | |
2732 | ||
2733 | /* If there were any stray characters in the queue process them | |
2734 | * first | |
2735 | */ | |
2736 | while (s->max_size > 0 && s->bufptr < s->bufcnt) { | |
2737 | qemu_chr_be_write(chr, &s->buf[s->bufptr], 1); | |
2738 | s->bufptr++; | |
2739 | s->max_size = qemu_chr_be_can_write(chr); | |
2740 | } | |
2741 | return s->max_size; | |
2742 | } | |
2743 | ||
2744 | static gboolean udp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque) | |
2745 | { | |
2746 | CharDriverState *chr = opaque; | |
2747 | NetCharDriver *s = chr->opaque; | |
2748 | ssize_t ret; | |
2749 | ||
2750 | if (s->max_size == 0) { | |
2751 | return TRUE; | |
2752 | } | |
2753 | ret = qio_channel_read( | |
2754 | s->ioc, (char *)s->buf, sizeof(s->buf), NULL); | |
2755 | if (ret <= 0) { | |
2756 | remove_fd_in_watch(chr); | |
2757 | return FALSE; | |
2758 | } | |
2759 | s->bufcnt = ret; | |
2760 | ||
2761 | s->bufptr = 0; | |
2762 | while (s->max_size > 0 && s->bufptr < s->bufcnt) { | |
2763 | qemu_chr_be_write(chr, &s->buf[s->bufptr], 1); | |
2764 | s->bufptr++; | |
2765 | s->max_size = qemu_chr_be_can_write(chr); | |
2766 | } | |
2767 | ||
2768 | return TRUE; | |
2769 | } | |
2770 | ||
2771 | static void udp_chr_update_read_handler(CharDriverState *chr, | |
2772 | GMainContext *context) | |
2773 | { | |
2774 | NetCharDriver *s = chr->opaque; | |
2775 | ||
2776 | remove_fd_in_watch(chr); | |
2777 | if (s->ioc) { | |
2778 | chr->fd_in_tag = io_add_watch_poll(chr, s->ioc, | |
2779 | udp_chr_read_poll, | |
2780 | udp_chr_read, chr, | |
2781 | context); | |
2782 | } | |
2783 | } | |
2784 | ||
2785 | static void udp_chr_free(CharDriverState *chr) | |
2786 | { | |
2787 | NetCharDriver *s = chr->opaque; | |
2788 | ||
2789 | remove_fd_in_watch(chr); | |
2790 | if (s->ioc) { | |
2791 | object_unref(OBJECT(s->ioc)); | |
2792 | } | |
2793 | g_free(s); | |
2794 | qemu_chr_be_event(chr, CHR_EVENT_CLOSED); | |
2795 | } | |
2796 | ||
2797 | static CharDriverState *qemu_chr_open_udp(QIOChannelSocket *sioc, | |
2798 | ChardevCommon *backend, | |
2799 | bool *be_opened, | |
2800 | Error **errp) | |
2801 | { | |
2802 | CharDriverState *chr = NULL; | |
2803 | NetCharDriver *s = NULL; | |
2804 | ||
2805 | chr = qemu_chr_alloc(backend, errp); | |
2806 | if (!chr) { | |
2807 | return NULL; | |
2808 | } | |
2809 | s = g_new0(NetCharDriver, 1); | |
2810 | ||
2811 | s->ioc = QIO_CHANNEL(sioc); | |
2812 | s->bufcnt = 0; | |
2813 | s->bufptr = 0; | |
2814 | chr->opaque = s; | |
2815 | chr->chr_write = udp_chr_write; | |
2816 | chr->chr_update_read_handler = udp_chr_update_read_handler; | |
2817 | chr->chr_free = udp_chr_free; | |
2818 | /* be isn't opened until we get a connection */ | |
2819 | *be_opened = false; | |
2820 | return chr; | |
2821 | } | |
2822 | ||
2823 | /***********************************************************/ | |
2824 | /* TCP Net console */ | |
2825 | ||
2826 | typedef struct { | |
2827 | QIOChannel *ioc; /* Client I/O channel */ | |
2828 | QIOChannelSocket *sioc; /* Client master channel */ | |
2829 | QIOChannelSocket *listen_ioc; | |
2830 | guint listen_tag; | |
2831 | QCryptoTLSCreds *tls_creds; | |
2832 | int connected; | |
2833 | int max_size; | |
2834 | int do_telnetopt; | |
2835 | int do_nodelay; | |
2836 | int is_unix; | |
2837 | int *read_msgfds; | |
2838 | size_t read_msgfds_num; | |
2839 | int *write_msgfds; | |
2840 | size_t write_msgfds_num; | |
2841 | ||
2842 | SocketAddress *addr; | |
2843 | bool is_listen; | |
2844 | bool is_telnet; | |
2845 | ||
2846 | guint reconnect_timer; | |
2847 | int64_t reconnect_time; | |
2848 | bool connect_err_reported; | |
2849 | } TCPCharDriver; | |
2850 | ||
2851 | static gboolean socket_reconnect_timeout(gpointer opaque); | |
2852 | ||
2853 | static void qemu_chr_socket_restart_timer(CharDriverState *chr) | |
2854 | { | |
2855 | TCPCharDriver *s = chr->opaque; | |
2856 | char *name; | |
2857 | assert(s->connected == 0); | |
2858 | s->reconnect_timer = g_timeout_add_seconds(s->reconnect_time, | |
2859 | socket_reconnect_timeout, chr); | |
2860 | name = g_strdup_printf("chardev-socket-reconnect-%s", chr->label); | |
2861 | g_source_set_name_by_id(s->reconnect_timer, name); | |
2862 | g_free(name); | |
2863 | } | |
2864 | ||
2865 | static void check_report_connect_error(CharDriverState *chr, | |
2866 | Error *err) | |
2867 | { | |
2868 | TCPCharDriver *s = chr->opaque; | |
2869 | ||
2870 | if (!s->connect_err_reported) { | |
2871 | error_report("Unable to connect character device %s: %s", | |
2872 | chr->label, error_get_pretty(err)); | |
2873 | s->connect_err_reported = true; | |
2874 | } | |
2875 | qemu_chr_socket_restart_timer(chr); | |
2876 | } | |
2877 | ||
2878 | static gboolean tcp_chr_accept(QIOChannel *chan, | |
2879 | GIOCondition cond, | |
2880 | void *opaque); | |
2881 | ||
2882 | /* Called with chr_write_lock held. */ | |
2883 | static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len) | |
2884 | { | |
2885 | TCPCharDriver *s = chr->opaque; | |
2886 | if (s->connected) { | |
2887 | int ret = io_channel_send_full(s->ioc, buf, len, | |
2888 | s->write_msgfds, | |
2889 | s->write_msgfds_num); | |
2890 | ||
2891 | /* free the written msgfds, no matter what */ | |
2892 | if (s->write_msgfds_num) { | |
2893 | g_free(s->write_msgfds); | |
2894 | s->write_msgfds = 0; | |
2895 | s->write_msgfds_num = 0; | |
2896 | } | |
2897 | ||
2898 | return ret; | |
2899 | } else { | |
2900 | /* XXX: indicate an error ? */ | |
2901 | return len; | |
2902 | } | |
2903 | } | |
2904 | ||
2905 | static int tcp_chr_read_poll(void *opaque) | |
2906 | { | |
2907 | CharDriverState *chr = opaque; | |
2908 | TCPCharDriver *s = chr->opaque; | |
2909 | if (!s->connected) | |
2910 | return 0; | |
2911 | s->max_size = qemu_chr_be_can_write(chr); | |
2912 | return s->max_size; | |
2913 | } | |
2914 | ||
2915 | #define IAC 255 | |
2916 | #define IAC_BREAK 243 | |
2917 | static void tcp_chr_process_IAC_bytes(CharDriverState *chr, | |
2918 | TCPCharDriver *s, | |
2919 | uint8_t *buf, int *size) | |
2920 | { | |
2921 | /* Handle any telnet client's basic IAC options to satisfy char by | |
2922 | * char mode with no echo. All IAC options will be removed from | |
2923 | * the buf and the do_telnetopt variable will be used to track the | |
2924 | * state of the width of the IAC information. | |
2925 | * | |
2926 | * IAC commands come in sets of 3 bytes with the exception of the | |
2927 | * "IAC BREAK" command and the double IAC. | |
2928 | */ | |
2929 | ||
2930 | int i; | |
2931 | int j = 0; | |
2932 | ||
2933 | for (i = 0; i < *size; i++) { | |
2934 | if (s->do_telnetopt > 1) { | |
2935 | if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) { | |
2936 | /* Double IAC means send an IAC */ | |
2937 | if (j != i) | |
2938 | buf[j] = buf[i]; | |
2939 | j++; | |
2940 | s->do_telnetopt = 1; | |
2941 | } else { | |
2942 | if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) { | |
2943 | /* Handle IAC break commands by sending a serial break */ | |
2944 | qemu_chr_be_event(chr, CHR_EVENT_BREAK); | |
2945 | s->do_telnetopt++; | |
2946 | } | |
2947 | s->do_telnetopt++; | |
2948 | } | |
2949 | if (s->do_telnetopt >= 4) { | |
2950 | s->do_telnetopt = 1; | |
2951 | } | |
2952 | } else { | |
2953 | if ((unsigned char)buf[i] == IAC) { | |
2954 | s->do_telnetopt = 2; | |
2955 | } else { | |
2956 | if (j != i) | |
2957 | buf[j] = buf[i]; | |
2958 | j++; | |
2959 | } | |
2960 | } | |
2961 | } | |
2962 | *size = j; | |
2963 | } | |
2964 | ||
2965 | static int tcp_get_msgfds(CharDriverState *chr, int *fds, int num) | |
2966 | { | |
2967 | TCPCharDriver *s = chr->opaque; | |
2968 | int to_copy = (s->read_msgfds_num < num) ? s->read_msgfds_num : num; | |
2969 | ||
2970 | assert(num <= TCP_MAX_FDS); | |
2971 | ||
2972 | if (to_copy) { | |
2973 | int i; | |
2974 | ||
2975 | memcpy(fds, s->read_msgfds, to_copy * sizeof(int)); | |
2976 | ||
2977 | /* Close unused fds */ | |
2978 | for (i = to_copy; i < s->read_msgfds_num; i++) { | |
2979 | close(s->read_msgfds[i]); | |
2980 | } | |
2981 | ||
2982 | g_free(s->read_msgfds); | |
2983 | s->read_msgfds = 0; | |
2984 | s->read_msgfds_num = 0; | |
2985 | } | |
2986 | ||
2987 | return to_copy; | |
2988 | } | |
2989 | ||
2990 | static int tcp_set_msgfds(CharDriverState *chr, int *fds, int num) | |
2991 | { | |
2992 | TCPCharDriver *s = chr->opaque; | |
2993 | ||
2994 | /* clear old pending fd array */ | |
2995 | g_free(s->write_msgfds); | |
2996 | s->write_msgfds = NULL; | |
2997 | s->write_msgfds_num = 0; | |
2998 | ||
2999 | if (!s->connected || | |
3000 | !qio_channel_has_feature(s->ioc, | |
3001 | QIO_CHANNEL_FEATURE_FD_PASS)) { | |
3002 | return -1; | |
3003 | } | |
3004 | ||
3005 | if (num) { | |
3006 | s->write_msgfds = g_new(int, num); | |
3007 | memcpy(s->write_msgfds, fds, num * sizeof(int)); | |
3008 | } | |
3009 | ||
3010 | s->write_msgfds_num = num; | |
3011 | ||
3012 | return 0; | |
3013 | } | |
3014 | ||
3015 | static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len) | |
3016 | { | |
3017 | TCPCharDriver *s = chr->opaque; | |
3018 | struct iovec iov = { .iov_base = buf, .iov_len = len }; | |
3019 | int ret; | |
3020 | size_t i; | |
3021 | int *msgfds = NULL; | |
3022 | size_t msgfds_num = 0; | |
3023 | ||
3024 | if (qio_channel_has_feature(s->ioc, QIO_CHANNEL_FEATURE_FD_PASS)) { | |
3025 | ret = qio_channel_readv_full(s->ioc, &iov, 1, | |
3026 | &msgfds, &msgfds_num, | |
3027 | NULL); | |
3028 | } else { | |
3029 | ret = qio_channel_readv_full(s->ioc, &iov, 1, | |
3030 | NULL, NULL, | |
3031 | NULL); | |
3032 | } | |
3033 | ||
3034 | if (ret == QIO_CHANNEL_ERR_BLOCK) { | |
3035 | errno = EAGAIN; | |
3036 | ret = -1; | |
3037 | } else if (ret == -1) { | |
3038 | errno = EIO; | |
3039 | } | |
3040 | ||
3041 | if (msgfds_num) { | |
3042 | /* close and clean read_msgfds */ | |
3043 | for (i = 0; i < s->read_msgfds_num; i++) { | |
3044 | close(s->read_msgfds[i]); | |
3045 | } | |
3046 | ||
3047 | if (s->read_msgfds_num) { | |
3048 | g_free(s->read_msgfds); | |
3049 | } | |
3050 | ||
3051 | s->read_msgfds = msgfds; | |
3052 | s->read_msgfds_num = msgfds_num; | |
3053 | } | |
3054 | ||
3055 | for (i = 0; i < s->read_msgfds_num; i++) { | |
3056 | int fd = s->read_msgfds[i]; | |
3057 | if (fd < 0) { | |
3058 | continue; | |
3059 | } | |
3060 | ||
3061 | /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */ | |
3062 | qemu_set_block(fd); | |
3063 | ||
3064 | #ifndef MSG_CMSG_CLOEXEC | |
3065 | qemu_set_cloexec(fd); | |
3066 | #endif | |
3067 | } | |
3068 | ||
3069 | return ret; | |
3070 | } | |
3071 | ||
3072 | static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond) | |
3073 | { | |
3074 | TCPCharDriver *s = chr->opaque; | |
3075 | return qio_channel_create_watch(s->ioc, cond); | |
3076 | } | |
3077 | ||
3078 | static void tcp_chr_free_connection(CharDriverState *chr) | |
3079 | { | |
3080 | TCPCharDriver *s = chr->opaque; | |
3081 | int i; | |
3082 | ||
3083 | if (!s->connected) { | |
3084 | return; | |
3085 | } | |
3086 | ||
3087 | if (s->read_msgfds_num) { | |
3088 | for (i = 0; i < s->read_msgfds_num; i++) { | |
3089 | close(s->read_msgfds[i]); | |
3090 | } | |
3091 | g_free(s->read_msgfds); | |
3092 | s->read_msgfds = NULL; | |
3093 | s->read_msgfds_num = 0; | |
3094 | } | |
3095 | ||
3096 | tcp_set_msgfds(chr, NULL, 0); | |
3097 | remove_fd_in_watch(chr); | |
3098 | object_unref(OBJECT(s->sioc)); | |
3099 | s->sioc = NULL; | |
3100 | object_unref(OBJECT(s->ioc)); | |
3101 | s->ioc = NULL; | |
3102 | g_free(chr->filename); | |
3103 | chr->filename = NULL; | |
3104 | s->connected = 0; | |
3105 | } | |
3106 | ||
3107 | static void tcp_chr_disconnect(CharDriverState *chr) | |
3108 | { | |
3109 | TCPCharDriver *s = chr->opaque; | |
3110 | ||
3111 | if (!s->connected) { | |
3112 | return; | |
3113 | } | |
3114 | ||
3115 | tcp_chr_free_connection(chr); | |
3116 | ||
3117 | if (s->listen_ioc) { | |
3118 | s->listen_tag = qio_channel_add_watch( | |
3119 | QIO_CHANNEL(s->listen_ioc), G_IO_IN, tcp_chr_accept, chr, NULL); | |
3120 | } | |
3121 | chr->filename = SocketAddress_to_str("disconnected:", s->addr, | |
3122 | s->is_listen, s->is_telnet); | |
3123 | qemu_chr_be_event(chr, CHR_EVENT_CLOSED); | |
3124 | if (s->reconnect_time) { | |
3125 | qemu_chr_socket_restart_timer(chr); | |
3126 | } | |
3127 | } | |
3128 | ||
3129 | static gboolean tcp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque) | |
3130 | { | |
3131 | CharDriverState *chr = opaque; | |
3132 | TCPCharDriver *s = chr->opaque; | |
3133 | uint8_t buf[READ_BUF_LEN]; | |
3134 | int len, size; | |
3135 | ||
3136 | if (!s->connected || s->max_size <= 0) { | |
3137 | return TRUE; | |
3138 | } | |
3139 | len = sizeof(buf); | |
3140 | if (len > s->max_size) | |
3141 | len = s->max_size; | |
3142 | size = tcp_chr_recv(chr, (void *)buf, len); | |
3143 | if (size == 0 || size == -1) { | |
3144 | /* connection closed */ | |
3145 | tcp_chr_disconnect(chr); | |
3146 | } else if (size > 0) { | |
3147 | if (s->do_telnetopt) | |
3148 | tcp_chr_process_IAC_bytes(chr, s, buf, &size); | |
3149 | if (size > 0) | |
3150 | qemu_chr_be_write(chr, buf, size); | |
3151 | } | |
3152 | ||
3153 | return TRUE; | |
3154 | } | |
3155 | ||
3156 | static int tcp_chr_sync_read(CharDriverState *chr, const uint8_t *buf, int len) | |
3157 | { | |
3158 | TCPCharDriver *s = chr->opaque; | |
3159 | int size; | |
3160 | ||
3161 | if (!s->connected) { | |
3162 | return 0; | |
3163 | } | |
3164 | ||
3165 | size = tcp_chr_recv(chr, (void *) buf, len); | |
3166 | if (size == 0) { | |
3167 | /* connection closed */ | |
3168 | tcp_chr_disconnect(chr); | |
3169 | } | |
3170 | ||
3171 | return size; | |
3172 | } | |
3173 | ||
3174 | static void tcp_chr_connect(void *opaque) | |
3175 | { | |
3176 | CharDriverState *chr = opaque; | |
3177 | TCPCharDriver *s = chr->opaque; | |
3178 | ||
3179 | g_free(chr->filename); | |
3180 | chr->filename = sockaddr_to_str( | |
3181 | &s->sioc->localAddr, s->sioc->localAddrLen, | |
3182 | &s->sioc->remoteAddr, s->sioc->remoteAddrLen, | |
3183 | s->is_listen, s->is_telnet); | |
3184 | ||
3185 | s->connected = 1; | |
3186 | if (s->ioc) { | |
3187 | chr->fd_in_tag = io_add_watch_poll(chr, s->ioc, | |
3188 | tcp_chr_read_poll, | |
3189 | tcp_chr_read, | |
3190 | chr, NULL); | |
3191 | } | |
3192 | qemu_chr_be_generic_open(chr); | |
3193 | } | |
3194 | ||
3195 | static void tcp_chr_update_read_handler(CharDriverState *chr, | |
3196 | GMainContext *context) | |
3197 | { | |
3198 | TCPCharDriver *s = chr->opaque; | |
3199 | ||
3200 | if (!s->connected) { | |
3201 | return; | |
3202 | } | |
3203 | ||
3204 | remove_fd_in_watch(chr); | |
3205 | if (s->ioc) { | |
3206 | chr->fd_in_tag = io_add_watch_poll(chr, s->ioc, | |
3207 | tcp_chr_read_poll, | |
3208 | tcp_chr_read, chr, | |
3209 | context); | |
3210 | } | |
3211 | } | |
3212 | ||
3213 | typedef struct { | |
3214 | CharDriverState *chr; | |
3215 | char buf[12]; | |
3216 | size_t buflen; | |
3217 | } TCPCharDriverTelnetInit; | |
3218 | ||
3219 | static gboolean tcp_chr_telnet_init_io(QIOChannel *ioc, | |
3220 | GIOCondition cond G_GNUC_UNUSED, | |
3221 | gpointer user_data) | |
3222 | { | |
3223 | TCPCharDriverTelnetInit *init = user_data; | |
3224 | ssize_t ret; | |
3225 | ||
3226 | ret = qio_channel_write(ioc, init->buf, init->buflen, NULL); | |
3227 | if (ret < 0) { | |
3228 | if (ret == QIO_CHANNEL_ERR_BLOCK) { | |
3229 | ret = 0; | |
3230 | } else { | |
3231 | tcp_chr_disconnect(init->chr); | |
3232 | return FALSE; | |
3233 | } | |
3234 | } | |
3235 | init->buflen -= ret; | |
3236 | ||
3237 | if (init->buflen == 0) { | |
3238 | tcp_chr_connect(init->chr); | |
3239 | return FALSE; | |
3240 | } | |
3241 | ||
3242 | memmove(init->buf, init->buf + ret, init->buflen); | |
3243 | ||
3244 | return TRUE; | |
3245 | } | |
3246 | ||
3247 | static void tcp_chr_telnet_init(CharDriverState *chr) | |
3248 | { | |
3249 | TCPCharDriver *s = chr->opaque; | |
3250 | TCPCharDriverTelnetInit *init = | |
3251 | g_new0(TCPCharDriverTelnetInit, 1); | |
3252 | size_t n = 0; | |
3253 | ||
3254 | init->chr = chr; | |
3255 | init->buflen = 12; | |
3256 | ||
3257 | #define IACSET(x, a, b, c) \ | |
3258 | do { \ | |
3259 | x[n++] = a; \ | |
3260 | x[n++] = b; \ | |
3261 | x[n++] = c; \ | |
3262 | } while (0) | |
3263 | ||
3264 | /* Prep the telnet negotion to put telnet in binary, | |
3265 | * no echo, single char mode */ | |
3266 | IACSET(init->buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */ | |
3267 | IACSET(init->buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */ | |
3268 | IACSET(init->buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */ | |
3269 | IACSET(init->buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */ | |
3270 | ||
3271 | #undef IACSET | |
3272 | ||
3273 | qio_channel_add_watch( | |
3274 | s->ioc, G_IO_OUT, | |
3275 | tcp_chr_telnet_init_io, | |
3276 | init, NULL); | |
3277 | } | |
3278 | ||
3279 | ||
3280 | static void tcp_chr_tls_handshake(QIOTask *task, | |
3281 | gpointer user_data) | |
3282 | { | |
3283 | CharDriverState *chr = user_data; | |
3284 | TCPCharDriver *s = chr->opaque; | |
3285 | ||
3286 | if (qio_task_propagate_error(task, NULL)) { | |
3287 | tcp_chr_disconnect(chr); | |
3288 | } else { | |
3289 | if (s->do_telnetopt) { | |
3290 | tcp_chr_telnet_init(chr); | |
3291 | } else { | |
3292 | tcp_chr_connect(chr); | |
3293 | } | |
3294 | } | |
3295 | } | |
3296 | ||
3297 | ||
3298 | static void tcp_chr_tls_init(CharDriverState *chr) | |
3299 | { | |
3300 | TCPCharDriver *s = chr->opaque; | |
3301 | QIOChannelTLS *tioc; | |
3302 | Error *err = NULL; | |
3303 | gchar *name; | |
3304 | ||
3305 | if (s->is_listen) { | |
3306 | tioc = qio_channel_tls_new_server( | |
3307 | s->ioc, s->tls_creds, | |
3308 | NULL, /* XXX Use an ACL */ | |
3309 | &err); | |
3310 | } else { | |
3311 | tioc = qio_channel_tls_new_client( | |
3312 | s->ioc, s->tls_creds, | |
3313 | s->addr->u.inet.data->host, | |
3314 | &err); | |
3315 | } | |
3316 | if (tioc == NULL) { | |
3317 | error_free(err); | |
3318 | tcp_chr_disconnect(chr); | |
3319 | return; | |
3320 | } | |
3321 | name = g_strdup_printf("chardev-tls-%s-%s", | |
3322 | s->is_listen ? "server" : "client", | |
3323 | chr->label); | |
3324 | qio_channel_set_name(QIO_CHANNEL(tioc), name); | |
3325 | g_free(name); | |
3326 | object_unref(OBJECT(s->ioc)); | |
3327 | s->ioc = QIO_CHANNEL(tioc); | |
3328 | ||
3329 | qio_channel_tls_handshake(tioc, | |
3330 | tcp_chr_tls_handshake, | |
3331 | chr, | |
3332 | NULL); | |
3333 | } | |
3334 | ||
3335 | ||
3336 | static void tcp_chr_set_client_ioc_name(CharDriverState *chr, | |
3337 | QIOChannelSocket *sioc) | |
3338 | { | |
3339 | TCPCharDriver *s = chr->opaque; | |
3340 | char *name; | |
3341 | name = g_strdup_printf("chardev-tcp-%s-%s", | |
3342 | s->is_listen ? "server" : "client", | |
3343 | chr->label); | |
3344 | qio_channel_set_name(QIO_CHANNEL(sioc), name); | |
3345 | g_free(name); | |
3346 | ||
3347 | } | |
3348 | ||
3349 | static int tcp_chr_new_client(CharDriverState *chr, QIOChannelSocket *sioc) | |
3350 | { | |
3351 | TCPCharDriver *s = chr->opaque; | |
3352 | if (s->ioc != NULL) { | |
3353 | return -1; | |
3354 | } | |
3355 | ||
3356 | s->ioc = QIO_CHANNEL(sioc); | |
3357 | object_ref(OBJECT(sioc)); | |
3358 | s->sioc = sioc; | |
3359 | object_ref(OBJECT(sioc)); | |
3360 | ||
3361 | qio_channel_set_blocking(s->ioc, false, NULL); | |
3362 | ||
3363 | if (s->do_nodelay) { | |
3364 | qio_channel_set_delay(s->ioc, false); | |
3365 | } | |
3366 | if (s->listen_tag) { | |
3367 | g_source_remove(s->listen_tag); | |
3368 | s->listen_tag = 0; | |
3369 | } | |
3370 | ||
3371 | if (s->tls_creds) { | |
3372 | tcp_chr_tls_init(chr); | |
3373 | } else { | |
3374 | if (s->do_telnetopt) { | |
3375 | tcp_chr_telnet_init(chr); | |
3376 | } else { | |
3377 | tcp_chr_connect(chr); | |
3378 | } | |
3379 | } | |
3380 | ||
3381 | return 0; | |
3382 | } | |
3383 | ||
3384 | ||
3385 | static int tcp_chr_add_client(CharDriverState *chr, int fd) | |
3386 | { | |
3387 | int ret; | |
3388 | QIOChannelSocket *sioc; | |
3389 | ||
3390 | sioc = qio_channel_socket_new_fd(fd, NULL); | |
3391 | if (!sioc) { | |
3392 | return -1; | |
3393 | } | |
3394 | tcp_chr_set_client_ioc_name(chr, sioc); | |
3395 | ret = tcp_chr_new_client(chr, sioc); | |
3396 | object_unref(OBJECT(sioc)); | |
3397 | return ret; | |
3398 | } | |
3399 | ||
3400 | static gboolean tcp_chr_accept(QIOChannel *channel, | |
3401 | GIOCondition cond, | |
3402 | void *opaque) | |
3403 | { | |
3404 | CharDriverState *chr = opaque; | |
3405 | QIOChannelSocket *sioc; | |
3406 | ||
3407 | sioc = qio_channel_socket_accept(QIO_CHANNEL_SOCKET(channel), | |
3408 | NULL); | |
3409 | if (!sioc) { | |
3410 | return TRUE; | |
3411 | } | |
3412 | ||
3413 | tcp_chr_new_client(chr, sioc); | |
3414 | ||
3415 | object_unref(OBJECT(sioc)); | |
3416 | ||
3417 | return TRUE; | |
3418 | } | |
3419 | ||
3420 | static int tcp_chr_wait_connected(CharDriverState *chr, Error **errp) | |
3421 | { | |
3422 | TCPCharDriver *s = chr->opaque; | |
3423 | QIOChannelSocket *sioc; | |
3424 | ||
3425 | /* It can't wait on s->connected, since it is set asynchronously | |
3426 | * in TLS and telnet cases, only wait for an accepted socket */ | |
3427 | while (!s->ioc) { | |
3428 | if (s->is_listen) { | |
3429 | fprintf(stderr, "QEMU waiting for connection on: %s\n", | |
3430 | chr->filename); | |
3431 | qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), true, NULL); | |
3432 | tcp_chr_accept(QIO_CHANNEL(s->listen_ioc), G_IO_IN, chr); | |
3433 | qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), false, NULL); | |
3434 | } else { | |
3435 | sioc = qio_channel_socket_new(); | |
3436 | tcp_chr_set_client_ioc_name(chr, sioc); | |
3437 | if (qio_channel_socket_connect_sync(sioc, s->addr, errp) < 0) { | |
3438 | object_unref(OBJECT(sioc)); | |
3439 | return -1; | |
3440 | } | |
3441 | tcp_chr_new_client(chr, sioc); | |
3442 | object_unref(OBJECT(sioc)); | |
3443 | } | |
3444 | } | |
3445 | ||
3446 | return 0; | |
3447 | } | |
3448 | ||
3449 | static int qemu_chr_wait_connected(CharDriverState *chr, Error **errp) | |
3450 | { | |
3451 | if (chr->chr_wait_connected) { | |
3452 | return chr->chr_wait_connected(chr, errp); | |
3453 | } | |
3454 | ||
3455 | return 0; | |
3456 | } | |
3457 | ||
3458 | int qemu_chr_fe_wait_connected(CharBackend *be, Error **errp) | |
3459 | { | |
3460 | if (!be->chr) { | |
3461 | error_setg(errp, "missing associated backend"); | |
3462 | return -1; | |
3463 | } | |
3464 | ||
3465 | return qemu_chr_wait_connected(be->chr, errp); | |
3466 | } | |
3467 | ||
3468 | static void tcp_chr_free(CharDriverState *chr) | |
3469 | { | |
3470 | TCPCharDriver *s = chr->opaque; | |
3471 | ||
3472 | tcp_chr_free_connection(chr); | |
3473 | ||
3474 | if (s->reconnect_timer) { | |
3475 | g_source_remove(s->reconnect_timer); | |
3476 | s->reconnect_timer = 0; | |
3477 | } | |
3478 | qapi_free_SocketAddress(s->addr); | |
3479 | if (s->listen_tag) { | |
3480 | g_source_remove(s->listen_tag); | |
3481 | s->listen_tag = 0; | |
3482 | } | |
3483 | if (s->listen_ioc) { | |
3484 | object_unref(OBJECT(s->listen_ioc)); | |
3485 | } | |
3486 | if (s->tls_creds) { | |
3487 | object_unref(OBJECT(s->tls_creds)); | |
3488 | } | |
3489 | g_free(s); | |
3490 | qemu_chr_be_event(chr, CHR_EVENT_CLOSED); | |
3491 | } | |
3492 | ||
3493 | ||
3494 | static void qemu_chr_socket_connected(QIOTask *task, void *opaque) | |
3495 | { | |
3496 | QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(qio_task_get_source(task)); | |
3497 | CharDriverState *chr = opaque; | |
3498 | TCPCharDriver *s = chr->opaque; | |
3499 | Error *err = NULL; | |
3500 | ||
3501 | if (qio_task_propagate_error(task, &err)) { | |
3502 | check_report_connect_error(chr, err); | |
3503 | error_free(err); | |
3504 | goto cleanup; | |
3505 | } | |
3506 | ||
3507 | s->connect_err_reported = false; | |
3508 | tcp_chr_new_client(chr, sioc); | |
3509 | ||
3510 | cleanup: | |
3511 | object_unref(OBJECT(sioc)); | |
3512 | } | |
3513 | ||
3514 | ||
3515 | /*********************************************************/ | |
3516 | /* Ring buffer chardev */ | |
3517 | ||
3518 | typedef struct { | |
3519 | size_t size; | |
3520 | size_t prod; | |
3521 | size_t cons; | |
3522 | uint8_t *cbuf; | |
3523 | } RingBufCharDriver; | |
3524 | ||
3525 | static size_t ringbuf_count(const CharDriverState *chr) | |
3526 | { | |
3527 | const RingBufCharDriver *d = chr->opaque; | |
3528 | ||
3529 | return d->prod - d->cons; | |
3530 | } | |
3531 | ||
3532 | /* Called with chr_write_lock held. */ | |
3533 | static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len) | |
3534 | { | |
3535 | RingBufCharDriver *d = chr->opaque; | |
3536 | int i; | |
3537 | ||
3538 | if (!buf || (len < 0)) { | |
3539 | return -1; | |
3540 | } | |
3541 | ||
3542 | for (i = 0; i < len; i++ ) { | |
3543 | d->cbuf[d->prod++ & (d->size - 1)] = buf[i]; | |
3544 | if (d->prod - d->cons > d->size) { | |
3545 | d->cons = d->prod - d->size; | |
3546 | } | |
3547 | } | |
3548 | ||
3549 | return len; | |
3550 | } | |
3551 | ||
3552 | static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len) | |
3553 | { | |
3554 | RingBufCharDriver *d = chr->opaque; | |
3555 | int i; | |
3556 | ||
3557 | qemu_mutex_lock(&chr->chr_write_lock); | |
3558 | for (i = 0; i < len && d->cons != d->prod; i++) { | |
3559 | buf[i] = d->cbuf[d->cons++ & (d->size - 1)]; | |
3560 | } | |
3561 | qemu_mutex_unlock(&chr->chr_write_lock); | |
3562 | ||
3563 | return i; | |
3564 | } | |
3565 | ||
3566 | static void ringbuf_chr_free(struct CharDriverState *chr) | |
3567 | { | |
3568 | RingBufCharDriver *d = chr->opaque; | |
3569 | ||
3570 | g_free(d->cbuf); | |
3571 | g_free(d); | |
3572 | chr->opaque = NULL; | |
3573 | } | |
3574 | ||
3575 | static CharDriverState *qemu_chr_open_ringbuf(const char *id, | |
3576 | ChardevBackend *backend, | |
3577 | ChardevReturn *ret, | |
3578 | bool *be_opened, | |
3579 | Error **errp) | |
3580 | { | |
3581 | ChardevRingbuf *opts = backend->u.ringbuf.data; | |
3582 | ChardevCommon *common = qapi_ChardevRingbuf_base(opts); | |
3583 | CharDriverState *chr; | |
3584 | RingBufCharDriver *d; | |
3585 | ||
3586 | chr = qemu_chr_alloc(common, errp); | |
3587 | if (!chr) { | |
3588 | return NULL; | |
3589 | } | |
3590 | d = g_malloc(sizeof(*d)); | |
3591 | ||
3592 | d->size = opts->has_size ? opts->size : 65536; | |
3593 | ||
3594 | /* The size must be power of 2 */ | |
3595 | if (d->size & (d->size - 1)) { | |
3596 | error_setg(errp, "size of ringbuf chardev must be power of two"); | |
3597 | goto fail; | |
3598 | } | |
3599 | ||
3600 | d->prod = 0; | |
3601 | d->cons = 0; | |
3602 | d->cbuf = g_malloc0(d->size); | |
3603 | ||
3604 | chr->opaque = d; | |
3605 | chr->chr_write = ringbuf_chr_write; | |
3606 | chr->chr_free = ringbuf_chr_free; | |
3607 | ||
3608 | return chr; | |
3609 | ||
3610 | fail: | |
3611 | g_free(d); | |
3612 | qemu_chr_free_common(chr); | |
3613 | return NULL; | |
3614 | } | |
3615 | ||
3616 | bool chr_is_ringbuf(const CharDriverState *chr) | |
3617 | { | |
3618 | return chr->chr_write == ringbuf_chr_write; | |
3619 | } | |
3620 | ||
3621 | void qmp_ringbuf_write(const char *device, const char *data, | |
3622 | bool has_format, enum DataFormat format, | |
3623 | Error **errp) | |
3624 | { | |
3625 | CharDriverState *chr; | |
3626 | const uint8_t *write_data; | |
3627 | int ret; | |
3628 | gsize write_count; | |
3629 | ||
3630 | chr = qemu_chr_find(device); | |
3631 | if (!chr) { | |
3632 | error_setg(errp, "Device '%s' not found", device); | |
3633 | return; | |
3634 | } | |
3635 | ||
3636 | if (!chr_is_ringbuf(chr)) { | |
3637 | error_setg(errp,"%s is not a ringbuf device", device); | |
3638 | return; | |
3639 | } | |
3640 | ||
3641 | if (has_format && (format == DATA_FORMAT_BASE64)) { | |
3642 | write_data = qbase64_decode(data, -1, | |
3643 | &write_count, | |
3644 | errp); | |
3645 | if (!write_data) { | |
3646 | return; | |
3647 | } | |
3648 | } else { | |
3649 | write_data = (uint8_t *)data; | |
3650 | write_count = strlen(data); | |
3651 | } | |
3652 | ||
3653 | ret = ringbuf_chr_write(chr, write_data, write_count); | |
3654 | ||
3655 | if (write_data != (uint8_t *)data) { | |
3656 | g_free((void *)write_data); | |
3657 | } | |
3658 | ||
3659 | if (ret < 0) { | |
3660 | error_setg(errp, "Failed to write to device %s", device); | |
3661 | return; | |
3662 | } | |
3663 | } | |
3664 | ||
3665 | char *qmp_ringbuf_read(const char *device, int64_t size, | |
3666 | bool has_format, enum DataFormat format, | |
3667 | Error **errp) | |
3668 | { | |
3669 | CharDriverState *chr; | |
3670 | uint8_t *read_data; | |
3671 | size_t count; | |
3672 | char *data; | |
3673 | ||
3674 | chr = qemu_chr_find(device); | |
3675 | if (!chr) { | |
3676 | error_setg(errp, "Device '%s' not found", device); | |
3677 | return NULL; | |
3678 | } | |
3679 | ||
3680 | if (!chr_is_ringbuf(chr)) { | |
3681 | error_setg(errp,"%s is not a ringbuf device", device); | |
3682 | return NULL; | |
3683 | } | |
3684 | ||
3685 | if (size <= 0) { | |
3686 | error_setg(errp, "size must be greater than zero"); | |
3687 | return NULL; | |
3688 | } | |
3689 | ||
3690 | count = ringbuf_count(chr); | |
3691 | size = size > count ? count : size; | |
3692 | read_data = g_malloc(size + 1); | |
3693 | ||
3694 | ringbuf_chr_read(chr, read_data, size); | |
3695 | ||
3696 | if (has_format && (format == DATA_FORMAT_BASE64)) { | |
3697 | data = g_base64_encode(read_data, size); | |
3698 | g_free(read_data); | |
3699 | } else { | |
3700 | /* | |
3701 | * FIXME should read only complete, valid UTF-8 characters up | |
3702 | * to @size bytes. Invalid sequences should be replaced by a | |
3703 | * suitable replacement character. Except when (and only | |
3704 | * when) ring buffer lost characters since last read, initial | |
3705 | * continuation characters should be dropped. | |
3706 | */ | |
3707 | read_data[size] = 0; | |
3708 | data = (char *)read_data; | |
3709 | } | |
3710 | ||
3711 | return data; | |
3712 | } | |
3713 | ||
3714 | QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename) | |
3715 | { | |
3716 | char host[65], port[33], width[8], height[8]; | |
3717 | int pos; | |
3718 | const char *p; | |
3719 | QemuOpts *opts; | |
3720 | Error *local_err = NULL; | |
3721 | ||
3722 | opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err); | |
3723 | if (local_err) { | |
3724 | error_report_err(local_err); | |
3725 | return NULL; | |
3726 | } | |
3727 | ||
3728 | if (strstart(filename, "mon:", &p)) { | |
3729 | filename = p; | |
3730 | qemu_opt_set(opts, "mux", "on", &error_abort); | |
3731 | if (strcmp(filename, "stdio") == 0) { | |
3732 | /* Monitor is muxed to stdio: do not exit on Ctrl+C by default | |
3733 | * but pass it to the guest. Handle this only for compat syntax, | |
3734 | * for -chardev syntax we have special option for this. | |
3735 | * This is what -nographic did, redirecting+muxing serial+monitor | |
3736 | * to stdio causing Ctrl+C to be passed to guest. */ | |
3737 | qemu_opt_set(opts, "signal", "off", &error_abort); | |
3738 | } | |
3739 | } | |
3740 | ||
3741 | if (strcmp(filename, "null") == 0 || | |
3742 | strcmp(filename, "pty") == 0 || | |
3743 | strcmp(filename, "msmouse") == 0 || | |
3744 | strcmp(filename, "braille") == 0 || | |
3745 | strcmp(filename, "testdev") == 0 || | |
3746 | strcmp(filename, "stdio") == 0) { | |
3747 | qemu_opt_set(opts, "backend", filename, &error_abort); | |
3748 | return opts; | |
3749 | } | |
3750 | if (strstart(filename, "vc", &p)) { | |
3751 | qemu_opt_set(opts, "backend", "vc", &error_abort); | |
3752 | if (*p == ':') { | |
3753 | if (sscanf(p+1, "%7[0-9]x%7[0-9]", width, height) == 2) { | |
3754 | /* pixels */ | |
3755 | qemu_opt_set(opts, "width", width, &error_abort); | |
3756 | qemu_opt_set(opts, "height", height, &error_abort); | |
3757 | } else if (sscanf(p+1, "%7[0-9]Cx%7[0-9]C", width, height) == 2) { | |
3758 | /* chars */ | |
3759 | qemu_opt_set(opts, "cols", width, &error_abort); | |
3760 | qemu_opt_set(opts, "rows", height, &error_abort); | |
3761 | } else { | |
3762 | goto fail; | |
3763 | } | |
3764 | } | |
3765 | return opts; | |
3766 | } | |
3767 | if (strcmp(filename, "con:") == 0) { | |
3768 | qemu_opt_set(opts, "backend", "console", &error_abort); | |
3769 | return opts; | |
3770 | } | |
3771 | if (strstart(filename, "COM", NULL)) { | |
3772 | qemu_opt_set(opts, "backend", "serial", &error_abort); | |
3773 | qemu_opt_set(opts, "path", filename, &error_abort); | |
3774 | return opts; | |
3775 | } | |
3776 | if (strstart(filename, "file:", &p)) { | |
3777 | qemu_opt_set(opts, "backend", "file", &error_abort); | |
3778 | qemu_opt_set(opts, "path", p, &error_abort); | |
3779 | return opts; | |
3780 | } | |
3781 | if (strstart(filename, "pipe:", &p)) { | |
3782 | qemu_opt_set(opts, "backend", "pipe", &error_abort); | |
3783 | qemu_opt_set(opts, "path", p, &error_abort); | |
3784 | return opts; | |
3785 | } | |
3786 | if (strstart(filename, "tcp:", &p) || | |
3787 | strstart(filename, "telnet:", &p)) { | |
3788 | if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) { | |
3789 | host[0] = 0; | |
3790 | if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) | |
3791 | goto fail; | |
3792 | } | |
3793 | qemu_opt_set(opts, "backend", "socket", &error_abort); | |
3794 | qemu_opt_set(opts, "host", host, &error_abort); | |
3795 | qemu_opt_set(opts, "port", port, &error_abort); | |
3796 | if (p[pos] == ',') { | |
3797 | qemu_opts_do_parse(opts, p+pos+1, NULL, &local_err); | |
3798 | if (local_err) { | |
3799 | error_report_err(local_err); | |
3800 | goto fail; | |
3801 | } | |
3802 | } | |
3803 | if (strstart(filename, "telnet:", &p)) | |
3804 | qemu_opt_set(opts, "telnet", "on", &error_abort); | |
3805 | return opts; | |
3806 | } | |
3807 | if (strstart(filename, "udp:", &p)) { | |
3808 | qemu_opt_set(opts, "backend", "udp", &error_abort); | |
3809 | if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) { | |
3810 | host[0] = 0; | |
3811 | if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) { | |
3812 | goto fail; | |
3813 | } | |
3814 | } | |
3815 | qemu_opt_set(opts, "host", host, &error_abort); | |
3816 | qemu_opt_set(opts, "port", port, &error_abort); | |
3817 | if (p[pos] == '@') { | |
3818 | p += pos + 1; | |
3819 | if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) { | |
3820 | host[0] = 0; | |
3821 | if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) { | |
3822 | goto fail; | |
3823 | } | |
3824 | } | |
3825 | qemu_opt_set(opts, "localaddr", host, &error_abort); | |
3826 | qemu_opt_set(opts, "localport", port, &error_abort); | |
3827 | } | |
3828 | return opts; | |
3829 | } | |
3830 | if (strstart(filename, "unix:", &p)) { | |
3831 | qemu_opt_set(opts, "backend", "socket", &error_abort); | |
3832 | qemu_opts_do_parse(opts, p, "path", &local_err); | |
3833 | if (local_err) { | |
3834 | error_report_err(local_err); | |
3835 | goto fail; | |
3836 | } | |
3837 | return opts; | |
3838 | } | |
3839 | if (strstart(filename, "/dev/parport", NULL) || | |
3840 | strstart(filename, "/dev/ppi", NULL)) { | |
3841 | qemu_opt_set(opts, "backend", "parport", &error_abort); | |
3842 | qemu_opt_set(opts, "path", filename, &error_abort); | |
3843 | return opts; | |
3844 | } | |
3845 | if (strstart(filename, "/dev/", NULL)) { | |
3846 | qemu_opt_set(opts, "backend", "tty", &error_abort); | |
3847 | qemu_opt_set(opts, "path", filename, &error_abort); | |
3848 | return opts; | |
3849 | } | |
3850 | ||
3851 | fail: | |
3852 | qemu_opts_del(opts); | |
3853 | return NULL; | |
3854 | } | |
3855 | ||
3856 | void qemu_chr_parse_common(QemuOpts *opts, ChardevCommon *backend) | |
3857 | { | |
3858 | const char *logfile = qemu_opt_get(opts, "logfile"); | |
3859 | ||
3860 | backend->has_logfile = logfile != NULL; | |
3861 | backend->logfile = logfile ? g_strdup(logfile) : NULL; | |
3862 | ||
3863 | backend->has_logappend = true; | |
3864 | backend->logappend = qemu_opt_get_bool(opts, "logappend", false); | |
3865 | } | |
3866 | ||
3867 | ||
3868 | static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend, | |
3869 | Error **errp) | |
3870 | { | |
3871 | const char *path = qemu_opt_get(opts, "path"); | |
3872 | ChardevFile *file; | |
3873 | ||
3874 | if (path == NULL) { | |
3875 | error_setg(errp, "chardev: file: no filename given"); | |
3876 | return; | |
3877 | } | |
3878 | file = backend->u.file.data = g_new0(ChardevFile, 1); | |
3879 | qemu_chr_parse_common(opts, qapi_ChardevFile_base(file)); | |
3880 | file->out = g_strdup(path); | |
3881 | ||
3882 | file->has_append = true; | |
3883 | file->append = qemu_opt_get_bool(opts, "append", false); | |
3884 | } | |
3885 | ||
3886 | static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend, | |
3887 | Error **errp) | |
3888 | { | |
3889 | ChardevStdio *stdio; | |
3890 | ||
3891 | stdio = backend->u.stdio.data = g_new0(ChardevStdio, 1); | |
3892 | qemu_chr_parse_common(opts, qapi_ChardevStdio_base(stdio)); | |
3893 | stdio->has_signal = true; | |
3894 | stdio->signal = qemu_opt_get_bool(opts, "signal", true); | |
3895 | } | |
3896 | ||
3897 | #ifdef HAVE_CHARDEV_SERIAL | |
3898 | static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend, | |
3899 | Error **errp) | |
3900 | { | |
3901 | const char *device = qemu_opt_get(opts, "path"); | |
3902 | ChardevHostdev *serial; | |
3903 | ||
3904 | if (device == NULL) { | |
3905 | error_setg(errp, "chardev: serial/tty: no device path given"); | |
3906 | return; | |
3907 | } | |
3908 | serial = backend->u.serial.data = g_new0(ChardevHostdev, 1); | |
3909 | qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(serial)); | |
3910 | serial->device = g_strdup(device); | |
3911 | } | |
3912 | #endif | |
3913 | ||
3914 | #ifdef HAVE_CHARDEV_PARPORT | |
3915 | static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend, | |
3916 | Error **errp) | |
3917 | { | |
3918 | const char *device = qemu_opt_get(opts, "path"); | |
3919 | ChardevHostdev *parallel; | |
3920 | ||
3921 | if (device == NULL) { | |
3922 | error_setg(errp, "chardev: parallel: no device path given"); | |
3923 | return; | |
3924 | } | |
3925 | parallel = backend->u.parallel.data = g_new0(ChardevHostdev, 1); | |
3926 | qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(parallel)); | |
3927 | parallel->device = g_strdup(device); | |
3928 | } | |
3929 | #endif | |
3930 | ||
3931 | static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend, | |
3932 | Error **errp) | |
3933 | { | |
3934 | const char *device = qemu_opt_get(opts, "path"); | |
3935 | ChardevHostdev *dev; | |
3936 | ||
3937 | if (device == NULL) { | |
3938 | error_setg(errp, "chardev: pipe: no device path given"); | |
3939 | return; | |
3940 | } | |
3941 | dev = backend->u.pipe.data = g_new0(ChardevHostdev, 1); | |
3942 | qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(dev)); | |
3943 | dev->device = g_strdup(device); | |
3944 | } | |
3945 | ||
3946 | static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend, | |
3947 | Error **errp) | |
3948 | { | |
3949 | int val; | |
3950 | ChardevRingbuf *ringbuf; | |
3951 | ||
3952 | ringbuf = backend->u.ringbuf.data = g_new0(ChardevRingbuf, 1); | |
3953 | qemu_chr_parse_common(opts, qapi_ChardevRingbuf_base(ringbuf)); | |
3954 | ||
3955 | val = qemu_opt_get_size(opts, "size", 0); | |
3956 | if (val != 0) { | |
3957 | ringbuf->has_size = true; | |
3958 | ringbuf->size = val; | |
3959 | } | |
3960 | } | |
3961 | ||
3962 | static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend, | |
3963 | Error **errp) | |
3964 | { | |
3965 | const char *chardev = qemu_opt_get(opts, "chardev"); | |
3966 | ChardevMux *mux; | |
3967 | ||
3968 | if (chardev == NULL) { | |
3969 | error_setg(errp, "chardev: mux: no chardev given"); | |
3970 | return; | |
3971 | } | |
3972 | mux = backend->u.mux.data = g_new0(ChardevMux, 1); | |
3973 | qemu_chr_parse_common(opts, qapi_ChardevMux_base(mux)); | |
3974 | mux->chardev = g_strdup(chardev); | |
3975 | } | |
3976 | ||
3977 | static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend, | |
3978 | Error **errp) | |
3979 | { | |
3980 | bool is_listen = qemu_opt_get_bool(opts, "server", false); | |
3981 | bool is_waitconnect = is_listen && qemu_opt_get_bool(opts, "wait", true); | |
3982 | bool is_telnet = qemu_opt_get_bool(opts, "telnet", false); | |
3983 | bool do_nodelay = !qemu_opt_get_bool(opts, "delay", true); | |
3984 | int64_t reconnect = qemu_opt_get_number(opts, "reconnect", 0); | |
3985 | const char *path = qemu_opt_get(opts, "path"); | |
3986 | const char *host = qemu_opt_get(opts, "host"); | |
3987 | const char *port = qemu_opt_get(opts, "port"); | |
3988 | const char *tls_creds = qemu_opt_get(opts, "tls-creds"); | |
3989 | SocketAddress *addr; | |
3990 | ChardevSocket *sock; | |
3991 | ||
3992 | if (!path) { | |
3993 | if (!host) { | |
3994 | error_setg(errp, "chardev: socket: no host given"); | |
3995 | return; | |
3996 | } | |
3997 | if (!port) { | |
3998 | error_setg(errp, "chardev: socket: no port given"); | |
3999 | return; | |
4000 | } | |
4001 | } else { | |
4002 | if (tls_creds) { | |
4003 | error_setg(errp, "TLS can only be used over TCP socket"); | |
4004 | return; | |
4005 | } | |
4006 | } | |
4007 | ||
4008 | sock = backend->u.socket.data = g_new0(ChardevSocket, 1); | |
4009 | qemu_chr_parse_common(opts, qapi_ChardevSocket_base(sock)); | |
4010 | ||
4011 | sock->has_nodelay = true; | |
4012 | sock->nodelay = do_nodelay; | |
4013 | sock->has_server = true; | |
4014 | sock->server = is_listen; | |
4015 | sock->has_telnet = true; | |
4016 | sock->telnet = is_telnet; | |
4017 | sock->has_wait = true; | |
4018 | sock->wait = is_waitconnect; | |
4019 | sock->has_reconnect = true; | |
4020 | sock->reconnect = reconnect; | |
4021 | sock->tls_creds = g_strdup(tls_creds); | |
4022 | ||
4023 | addr = g_new0(SocketAddress, 1); | |
4024 | if (path) { | |
4025 | UnixSocketAddress *q_unix; | |
4026 | addr->type = SOCKET_ADDRESS_KIND_UNIX; | |
4027 | q_unix = addr->u.q_unix.data = g_new0(UnixSocketAddress, 1); | |
4028 | q_unix->path = g_strdup(path); | |
4029 | } else { | |
4030 | addr->type = SOCKET_ADDRESS_KIND_INET; | |
4031 | addr->u.inet.data = g_new(InetSocketAddress, 1); | |
4032 | *addr->u.inet.data = (InetSocketAddress) { | |
4033 | .host = g_strdup(host), | |
4034 | .port = g_strdup(port), | |
4035 | .has_to = qemu_opt_get(opts, "to"), | |
4036 | .to = qemu_opt_get_number(opts, "to", 0), | |
4037 | .has_ipv4 = qemu_opt_get(opts, "ipv4"), | |
4038 | .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0), | |
4039 | .has_ipv6 = qemu_opt_get(opts, "ipv6"), | |
4040 | .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0), | |
4041 | }; | |
4042 | } | |
4043 | sock->addr = addr; | |
4044 | } | |
4045 | ||
4046 | static void qemu_chr_parse_udp(QemuOpts *opts, ChardevBackend *backend, | |
4047 | Error **errp) | |
4048 | { | |
4049 | const char *host = qemu_opt_get(opts, "host"); | |
4050 | const char *port = qemu_opt_get(opts, "port"); | |
4051 | const char *localaddr = qemu_opt_get(opts, "localaddr"); | |
4052 | const char *localport = qemu_opt_get(opts, "localport"); | |
4053 | bool has_local = false; | |
4054 | SocketAddress *addr; | |
4055 | ChardevUdp *udp; | |
4056 | ||
4057 | if (host == NULL || strlen(host) == 0) { | |
4058 | host = "localhost"; | |
4059 | } | |
4060 | if (port == NULL || strlen(port) == 0) { | |
4061 | error_setg(errp, "chardev: udp: remote port not specified"); | |
4062 | return; | |
4063 | } | |
4064 | if (localport == NULL || strlen(localport) == 0) { | |
4065 | localport = "0"; | |
4066 | } else { | |
4067 | has_local = true; | |
4068 | } | |
4069 | if (localaddr == NULL || strlen(localaddr) == 0) { | |
4070 | localaddr = ""; | |
4071 | } else { | |
4072 | has_local = true; | |
4073 | } | |
4074 | ||
4075 | udp = backend->u.udp.data = g_new0(ChardevUdp, 1); | |
4076 | qemu_chr_parse_common(opts, qapi_ChardevUdp_base(udp)); | |
4077 | ||
4078 | addr = g_new0(SocketAddress, 1); | |
4079 | addr->type = SOCKET_ADDRESS_KIND_INET; | |
4080 | addr->u.inet.data = g_new(InetSocketAddress, 1); | |
4081 | *addr->u.inet.data = (InetSocketAddress) { | |
4082 | .host = g_strdup(host), | |
4083 | .port = g_strdup(port), | |
4084 | .has_ipv4 = qemu_opt_get(opts, "ipv4"), | |
4085 | .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0), | |
4086 | .has_ipv6 = qemu_opt_get(opts, "ipv6"), | |
4087 | .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0), | |
4088 | }; | |
4089 | udp->remote = addr; | |
4090 | ||
4091 | if (has_local) { | |
4092 | udp->has_local = true; | |
4093 | addr = g_new0(SocketAddress, 1); | |
4094 | addr->type = SOCKET_ADDRESS_KIND_INET; | |
4095 | addr->u.inet.data = g_new(InetSocketAddress, 1); | |
4096 | *addr->u.inet.data = (InetSocketAddress) { | |
4097 | .host = g_strdup(localaddr), | |
4098 | .port = g_strdup(localport), | |
4099 | }; | |
4100 | udp->local = addr; | |
4101 | } | |
4102 | } | |
4103 | ||
4104 | typedef struct CharDriver { | |
4105 | const char *name; | |
4106 | ChardevBackendKind kind; | |
4107 | CharDriverParse *parse; | |
4108 | CharDriverCreate *create; | |
4109 | } CharDriver; | |
4110 | ||
4111 | static GSList *backends; | |
4112 | ||
4113 | void register_char_driver(const char *name, ChardevBackendKind kind, | |
4114 | CharDriverParse *parse, CharDriverCreate *create) | |
4115 | { | |
4116 | CharDriver *s; | |
4117 | ||
4118 | s = g_malloc0(sizeof(*s)); | |
4119 | s->name = g_strdup(name); | |
4120 | s->kind = kind; | |
4121 | s->parse = parse; | |
4122 | s->create = create; | |
4123 | ||
4124 | backends = g_slist_append(backends, s); | |
4125 | } | |
4126 | ||
4127 | CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts, | |
4128 | Error **errp) | |
4129 | { | |
4130 | Error *local_err = NULL; | |
4131 | CharDriver *cd; | |
4132 | CharDriverState *chr; | |
4133 | GSList *i; | |
4134 | ChardevReturn *ret = NULL; | |
4135 | ChardevBackend *backend; | |
4136 | const char *id = qemu_opts_id(opts); | |
4137 | char *bid = NULL; | |
4138 | ||
4139 | if (qemu_opt_get(opts, "backend") == NULL) { | |
4140 | error_setg(errp, "chardev: \"%s\" missing backend", | |
4141 | qemu_opts_id(opts)); | |
4142 | goto err; | |
4143 | } | |
4144 | ||
4145 | if (is_help_option(qemu_opt_get(opts, "backend"))) { | |
4146 | fprintf(stderr, "Available chardev backend types:\n"); | |
4147 | for (i = backends; i; i = i->next) { | |
4148 | cd = i->data; | |
4149 | fprintf(stderr, "%s\n", cd->name); | |
4150 | } | |
4151 | exit(!is_help_option(qemu_opt_get(opts, "backend"))); | |
4152 | } | |
4153 | ||
4154 | if (id == NULL) { | |
4155 | error_setg(errp, "chardev: no id specified"); | |
4156 | goto err; | |
4157 | } | |
4158 | ||
4159 | for (i = backends; i; i = i->next) { | |
4160 | cd = i->data; | |
4161 | ||
4162 | if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) { | |
4163 | break; | |
4164 | } | |
4165 | } | |
4166 | if (i == NULL) { | |
4167 | error_setg(errp, "chardev: backend \"%s\" not found", | |
4168 | qemu_opt_get(opts, "backend")); | |
4169 | goto err; | |
4170 | } | |
4171 | ||
4172 | backend = g_new0(ChardevBackend, 1); | |
4173 | ||
4174 | if (qemu_opt_get_bool(opts, "mux", 0)) { | |
4175 | bid = g_strdup_printf("%s-base", id); | |
4176 | } | |
4177 | ||
4178 | chr = NULL; | |
4179 | backend->type = cd->kind; | |
4180 | if (cd->parse) { | |
4181 | cd->parse(opts, backend, &local_err); | |
4182 | if (local_err) { | |
4183 | error_propagate(errp, local_err); | |
4184 | goto qapi_out; | |
4185 | } | |
4186 | } else { | |
4187 | ChardevCommon *cc = g_new0(ChardevCommon, 1); | |
4188 | qemu_chr_parse_common(opts, cc); | |
4189 | backend->u.null.data = cc; /* Any ChardevCommon member would work */ | |
4190 | } | |
4191 | ||
4192 | ret = qmp_chardev_add(bid ? bid : id, backend, errp); | |
4193 | if (!ret) { | |
4194 | goto qapi_out; | |
4195 | } | |
4196 | ||
4197 | if (bid) { | |
4198 | qapi_free_ChardevBackend(backend); | |
4199 | qapi_free_ChardevReturn(ret); | |
4200 | backend = g_new0(ChardevBackend, 1); | |
4201 | backend->u.mux.data = g_new0(ChardevMux, 1); | |
4202 | backend->type = CHARDEV_BACKEND_KIND_MUX; | |
4203 | backend->u.mux.data->chardev = g_strdup(bid); | |
4204 | ret = qmp_chardev_add(id, backend, errp); | |
4205 | if (!ret) { | |
4206 | chr = qemu_chr_find(bid); | |
4207 | qemu_chr_delete(chr); | |
4208 | chr = NULL; | |
4209 | goto qapi_out; | |
4210 | } | |
4211 | } | |
4212 | ||
4213 | chr = qemu_chr_find(id); | |
4214 | ||
4215 | qapi_out: | |
4216 | qapi_free_ChardevBackend(backend); | |
4217 | qapi_free_ChardevReturn(ret); | |
4218 | g_free(bid); | |
4219 | return chr; | |
4220 | ||
4221 | err: | |
4222 | return NULL; | |
4223 | } | |
4224 | ||
4225 | CharDriverState *qemu_chr_new_noreplay(const char *label, const char *filename) | |
4226 | { | |
4227 | const char *p; | |
4228 | CharDriverState *chr; | |
4229 | QemuOpts *opts; | |
4230 | Error *err = NULL; | |
4231 | ||
4232 | if (strstart(filename, "chardev:", &p)) { | |
4233 | return qemu_chr_find(p); | |
4234 | } | |
4235 | ||
4236 | opts = qemu_chr_parse_compat(label, filename); | |
4237 | if (!opts) | |
4238 | return NULL; | |
4239 | ||
4240 | chr = qemu_chr_new_from_opts(opts, &err); | |
4241 | if (err) { | |
4242 | error_report_err(err); | |
4243 | } | |
4244 | if (chr && qemu_opt_get_bool(opts, "mux", 0)) { | |
4245 | monitor_init(chr, MONITOR_USE_READLINE); | |
4246 | } | |
4247 | qemu_opts_del(opts); | |
4248 | return chr; | |
4249 | } | |
4250 | ||
4251 | CharDriverState *qemu_chr_new(const char *label, const char *filename) | |
4252 | { | |
4253 | CharDriverState *chr; | |
4254 | chr = qemu_chr_new_noreplay(label, filename); | |
4255 | if (chr) { | |
4256 | chr->replay = replay_mode != REPLAY_MODE_NONE; | |
4257 | if (chr->replay && chr->chr_ioctl) { | |
4258 | fprintf(stderr, | |
4259 | "Replay: ioctl is not supported for serial devices yet\n"); | |
4260 | } | |
4261 | replay_register_char_driver(chr); | |
4262 | } | |
4263 | return chr; | |
4264 | } | |
4265 | ||
4266 | void qemu_chr_fe_set_echo(CharBackend *be, bool echo) | |
4267 | { | |
4268 | CharDriverState *chr = be->chr; | |
4269 | ||
4270 | if (chr && chr->chr_set_echo) { | |
4271 | chr->chr_set_echo(chr, echo); | |
4272 | } | |
4273 | } | |
4274 | ||
4275 | void qemu_chr_fe_set_open(CharBackend *be, int fe_open) | |
4276 | { | |
4277 | CharDriverState *chr = be->chr; | |
4278 | ||
4279 | if (!chr) { | |
4280 | return; | |
4281 | } | |
4282 | ||
4283 | if (be->fe_open == fe_open) { | |
4284 | return; | |
4285 | } | |
4286 | be->fe_open = fe_open; | |
4287 | if (chr->chr_set_fe_open) { | |
4288 | chr->chr_set_fe_open(chr, fe_open); | |
4289 | } | |
4290 | } | |
4291 | ||
4292 | guint qemu_chr_fe_add_watch(CharBackend *be, GIOCondition cond, | |
4293 | GIOFunc func, void *user_data) | |
4294 | { | |
4295 | CharDriverState *s = be->chr; | |
4296 | GSource *src; | |
4297 | guint tag; | |
4298 | ||
4299 | if (!s || s->chr_add_watch == NULL) { | |
4300 | return 0; | |
4301 | } | |
4302 | ||
4303 | src = s->chr_add_watch(s, cond); | |
4304 | if (!src) { | |
4305 | return 0; | |
4306 | } | |
4307 | ||
4308 | g_source_set_callback(src, (GSourceFunc)func, user_data, NULL); | |
4309 | tag = g_source_attach(src, NULL); | |
4310 | g_source_unref(src); | |
4311 | ||
4312 | return tag; | |
4313 | } | |
4314 | ||
4315 | void qemu_chr_fe_disconnect(CharBackend *be) | |
4316 | { | |
4317 | CharDriverState *chr = be->chr; | |
4318 | ||
4319 | if (chr && chr->chr_disconnect) { | |
4320 | chr->chr_disconnect(chr); | |
4321 | } | |
4322 | } | |
4323 | ||
4324 | static void qemu_chr_free_common(CharDriverState *chr) | |
4325 | { | |
4326 | if (chr->be) { | |
4327 | chr->be->chr = NULL; | |
4328 | } | |
4329 | g_free(chr->filename); | |
4330 | g_free(chr->label); | |
4331 | if (chr->logfd != -1) { | |
4332 | close(chr->logfd); | |
4333 | } | |
4334 | qemu_mutex_destroy(&chr->chr_write_lock); | |
4335 | g_free(chr); | |
4336 | } | |
4337 | ||
4338 | void qemu_chr_free(CharDriverState *chr) | |
4339 | { | |
4340 | if (chr->chr_free) { | |
4341 | chr->chr_free(chr); | |
4342 | } | |
4343 | qemu_chr_free_common(chr); | |
4344 | } | |
4345 | ||
4346 | void qemu_chr_delete(CharDriverState *chr) | |
4347 | { | |
4348 | QTAILQ_REMOVE(&chardevs, chr, next); | |
4349 | qemu_chr_free(chr); | |
4350 | } | |
4351 | ||
4352 | ChardevInfoList *qmp_query_chardev(Error **errp) | |
4353 | { | |
4354 | ChardevInfoList *chr_list = NULL; | |
4355 | CharDriverState *chr; | |
4356 | ||
4357 | QTAILQ_FOREACH(chr, &chardevs, next) { | |
4358 | ChardevInfoList *info = g_malloc0(sizeof(*info)); | |
4359 | info->value = g_malloc0(sizeof(*info->value)); | |
4360 | info->value->label = g_strdup(chr->label); | |
4361 | info->value->filename = g_strdup(chr->filename); | |
4362 | info->value->frontend_open = chr->be && chr->be->fe_open; | |
4363 | ||
4364 | info->next = chr_list; | |
4365 | chr_list = info; | |
4366 | } | |
4367 | ||
4368 | return chr_list; | |
4369 | } | |
4370 | ||
4371 | ChardevBackendInfoList *qmp_query_chardev_backends(Error **errp) | |
4372 | { | |
4373 | ChardevBackendInfoList *backend_list = NULL; | |
4374 | CharDriver *c = NULL; | |
4375 | GSList *i = NULL; | |
4376 | ||
4377 | for (i = backends; i; i = i->next) { | |
4378 | ChardevBackendInfoList *info = g_malloc0(sizeof(*info)); | |
4379 | c = i->data; | |
4380 | info->value = g_malloc0(sizeof(*info->value)); | |
4381 | info->value->name = g_strdup(c->name); | |
4382 | ||
4383 | info->next = backend_list; | |
4384 | backend_list = info; | |
4385 | } | |
4386 | ||
4387 | return backend_list; | |
4388 | } | |
4389 | ||
4390 | CharDriverState *qemu_chr_find(const char *name) | |
4391 | { | |
4392 | CharDriverState *chr; | |
4393 | ||
4394 | QTAILQ_FOREACH(chr, &chardevs, next) { | |
4395 | if (strcmp(chr->label, name) != 0) | |
4396 | continue; | |
4397 | return chr; | |
4398 | } | |
4399 | return NULL; | |
4400 | } | |
4401 | ||
4402 | QemuOptsList qemu_chardev_opts = { | |
4403 | .name = "chardev", | |
4404 | .implied_opt_name = "backend", | |
4405 | .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head), | |
4406 | .desc = { | |
4407 | { | |
4408 | .name = "backend", | |
4409 | .type = QEMU_OPT_STRING, | |
4410 | },{ | |
4411 | .name = "path", | |
4412 | .type = QEMU_OPT_STRING, | |
4413 | },{ | |
4414 | .name = "host", | |
4415 | .type = QEMU_OPT_STRING, | |
4416 | },{ | |
4417 | .name = "port", | |
4418 | .type = QEMU_OPT_STRING, | |
4419 | },{ | |
4420 | .name = "localaddr", | |
4421 | .type = QEMU_OPT_STRING, | |
4422 | },{ | |
4423 | .name = "localport", | |
4424 | .type = QEMU_OPT_STRING, | |
4425 | },{ | |
4426 | .name = "to", | |
4427 | .type = QEMU_OPT_NUMBER, | |
4428 | },{ | |
4429 | .name = "ipv4", | |
4430 | .type = QEMU_OPT_BOOL, | |
4431 | },{ | |
4432 | .name = "ipv6", | |
4433 | .type = QEMU_OPT_BOOL, | |
4434 | },{ | |
4435 | .name = "wait", | |
4436 | .type = QEMU_OPT_BOOL, | |
4437 | },{ | |
4438 | .name = "server", | |
4439 | .type = QEMU_OPT_BOOL, | |
4440 | },{ | |
4441 | .name = "delay", | |
4442 | .type = QEMU_OPT_BOOL, | |
4443 | },{ | |
4444 | .name = "reconnect", | |
4445 | .type = QEMU_OPT_NUMBER, | |
4446 | },{ | |
4447 | .name = "telnet", | |
4448 | .type = QEMU_OPT_BOOL, | |
4449 | },{ | |
4450 | .name = "tls-creds", | |
4451 | .type = QEMU_OPT_STRING, | |
4452 | },{ | |
4453 | .name = "width", | |
4454 | .type = QEMU_OPT_NUMBER, | |
4455 | },{ | |
4456 | .name = "height", | |
4457 | .type = QEMU_OPT_NUMBER, | |
4458 | },{ | |
4459 | .name = "cols", | |
4460 | .type = QEMU_OPT_NUMBER, | |
4461 | },{ | |
4462 | .name = "rows", | |
4463 | .type = QEMU_OPT_NUMBER, | |
4464 | },{ | |
4465 | .name = "mux", | |
4466 | .type = QEMU_OPT_BOOL, | |
4467 | },{ | |
4468 | .name = "signal", | |
4469 | .type = QEMU_OPT_BOOL, | |
4470 | },{ | |
4471 | .name = "name", | |
4472 | .type = QEMU_OPT_STRING, | |
4473 | },{ | |
4474 | .name = "debug", | |
4475 | .type = QEMU_OPT_NUMBER, | |
4476 | },{ | |
4477 | .name = "size", | |
4478 | .type = QEMU_OPT_SIZE, | |
4479 | },{ | |
4480 | .name = "chardev", | |
4481 | .type = QEMU_OPT_STRING, | |
4482 | },{ | |
4483 | .name = "append", | |
4484 | .type = QEMU_OPT_BOOL, | |
4485 | },{ | |
4486 | .name = "logfile", | |
4487 | .type = QEMU_OPT_STRING, | |
4488 | },{ | |
4489 | .name = "logappend", | |
4490 | .type = QEMU_OPT_BOOL, | |
4491 | }, | |
4492 | { /* end of list */ } | |
4493 | }, | |
4494 | }; | |
4495 | ||
4496 | #ifdef _WIN32 | |
4497 | ||
4498 | static CharDriverState *qmp_chardev_open_file(const char *id, | |
4499 | ChardevBackend *backend, | |
4500 | ChardevReturn *ret, | |
4501 | bool *be_opened, | |
4502 | Error **errp) | |
4503 | { | |
4504 | ChardevFile *file = backend->u.file.data; | |
4505 | ChardevCommon *common = qapi_ChardevFile_base(file); | |
4506 | HANDLE out; | |
4507 | DWORD accessmode; | |
4508 | DWORD flags; | |
4509 | ||
4510 | if (file->has_in) { | |
4511 | error_setg(errp, "input file not supported"); | |
4512 | return NULL; | |
4513 | } | |
4514 | ||
4515 | if (file->has_append && file->append) { | |
4516 | /* Append to file if it already exists. */ | |
4517 | accessmode = FILE_GENERIC_WRITE & ~FILE_WRITE_DATA; | |
4518 | flags = OPEN_ALWAYS; | |
4519 | } else { | |
4520 | /* Truncate file if it already exists. */ | |
4521 | accessmode = GENERIC_WRITE; | |
4522 | flags = CREATE_ALWAYS; | |
4523 | } | |
4524 | ||
4525 | out = CreateFile(file->out, accessmode, FILE_SHARE_READ, NULL, flags, | |
4526 | FILE_ATTRIBUTE_NORMAL, NULL); | |
4527 | if (out == INVALID_HANDLE_VALUE) { | |
4528 | error_setg(errp, "open %s failed", file->out); | |
4529 | return NULL; | |
4530 | } | |
4531 | return qemu_chr_open_win_file(out, common, errp); | |
4532 | } | |
4533 | ||
4534 | static CharDriverState *qmp_chardev_open_serial(const char *id, | |
4535 | ChardevBackend *backend, | |
4536 | ChardevReturn *ret, | |
4537 | bool *be_opened, | |
4538 | Error **errp) | |
4539 | { | |
4540 | ChardevHostdev *serial = backend->u.serial.data; | |
4541 | ChardevCommon *common = qapi_ChardevHostdev_base(serial); | |
4542 | return qemu_chr_open_win_path(serial->device, common, errp); | |
4543 | } | |
4544 | ||
4545 | #else /* WIN32 */ | |
4546 | ||
4547 | static int qmp_chardev_open_file_source(char *src, int flags, | |
4548 | Error **errp) | |
4549 | { | |
4550 | int fd = -1; | |
4551 | ||
4552 | TFR(fd = qemu_open(src, flags, 0666)); | |
4553 | if (fd == -1) { | |
4554 | error_setg_file_open(errp, errno, src); | |
4555 | } | |
4556 | return fd; | |
4557 | } | |
4558 | ||
4559 | static CharDriverState *qmp_chardev_open_file(const char *id, | |
4560 | ChardevBackend *backend, | |
4561 | ChardevReturn *ret, | |
4562 | bool *be_opened, | |
4563 | Error **errp) | |
4564 | { | |
4565 | ChardevFile *file = backend->u.file.data; | |
4566 | ChardevCommon *common = qapi_ChardevFile_base(file); | |
4567 | int flags, in = -1, out; | |
4568 | ||
4569 | flags = O_WRONLY | O_CREAT | O_BINARY; | |
4570 | if (file->has_append && file->append) { | |
4571 | flags |= O_APPEND; | |
4572 | } else { | |
4573 | flags |= O_TRUNC; | |
4574 | } | |
4575 | ||
4576 | out = qmp_chardev_open_file_source(file->out, flags, errp); | |
4577 | if (out < 0) { | |
4578 | return NULL; | |
4579 | } | |
4580 | ||
4581 | if (file->has_in) { | |
4582 | flags = O_RDONLY; | |
4583 | in = qmp_chardev_open_file_source(file->in, flags, errp); | |
4584 | if (in < 0) { | |
4585 | qemu_close(out); | |
4586 | return NULL; | |
4587 | } | |
4588 | } | |
4589 | ||
4590 | return qemu_chr_open_fd(in, out, common, errp); | |
4591 | } | |
4592 | ||
4593 | #ifdef HAVE_CHARDEV_SERIAL | |
4594 | static CharDriverState *qmp_chardev_open_serial(const char *id, | |
4595 | ChardevBackend *backend, | |
4596 | ChardevReturn *ret, | |
4597 | bool *be_opened, | |
4598 | Error **errp) | |
4599 | { | |
4600 | ChardevHostdev *serial = backend->u.serial.data; | |
4601 | ChardevCommon *common = qapi_ChardevHostdev_base(serial); | |
4602 | int fd; | |
4603 | ||
4604 | fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp); | |
4605 | if (fd < 0) { | |
4606 | return NULL; | |
4607 | } | |
4608 | qemu_set_nonblock(fd); | |
4609 | return qemu_chr_open_tty_fd(fd, common, be_opened, errp); | |
4610 | } | |
4611 | #endif | |
4612 | ||
4613 | #ifdef HAVE_CHARDEV_PARPORT | |
4614 | static CharDriverState *qmp_chardev_open_parallel(const char *id, | |
4615 | ChardevBackend *backend, | |
4616 | ChardevReturn *ret, | |
4617 | bool *be_opened, | |
4618 | Error **errp) | |
4619 | { | |
4620 | ChardevHostdev *parallel = backend->u.parallel.data; | |
4621 | ChardevCommon *common = qapi_ChardevHostdev_base(parallel); | |
4622 | int fd; | |
4623 | ||
4624 | fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp); | |
4625 | if (fd < 0) { | |
4626 | return NULL; | |
4627 | } | |
4628 | return qemu_chr_open_pp_fd(fd, common, be_opened, errp); | |
4629 | } | |
4630 | #endif | |
4631 | ||
4632 | #endif /* WIN32 */ | |
4633 | ||
4634 | static gboolean socket_reconnect_timeout(gpointer opaque) | |
4635 | { | |
4636 | CharDriverState *chr = opaque; | |
4637 | TCPCharDriver *s = chr->opaque; | |
4638 | QIOChannelSocket *sioc; | |
4639 | ||
4640 | s->reconnect_timer = 0; | |
4641 | ||
4642 | if (chr->be_open) { | |
4643 | return false; | |
4644 | } | |
4645 | ||
4646 | sioc = qio_channel_socket_new(); | |
4647 | tcp_chr_set_client_ioc_name(chr, sioc); | |
4648 | qio_channel_socket_connect_async(sioc, s->addr, | |
4649 | qemu_chr_socket_connected, | |
4650 | chr, NULL); | |
4651 | ||
4652 | return false; | |
4653 | } | |
4654 | ||
4655 | static CharDriverState *qmp_chardev_open_socket(const char *id, | |
4656 | ChardevBackend *backend, | |
4657 | ChardevReturn *ret, | |
4658 | bool *be_opened, | |
4659 | Error **errp) | |
4660 | { | |
4661 | CharDriverState *chr; | |
4662 | TCPCharDriver *s; | |
4663 | ChardevSocket *sock = backend->u.socket.data; | |
4664 | SocketAddress *addr = sock->addr; | |
4665 | bool do_nodelay = sock->has_nodelay ? sock->nodelay : false; | |
4666 | bool is_listen = sock->has_server ? sock->server : true; | |
4667 | bool is_telnet = sock->has_telnet ? sock->telnet : false; | |
4668 | bool is_waitconnect = sock->has_wait ? sock->wait : false; | |
4669 | int64_t reconnect = sock->has_reconnect ? sock->reconnect : 0; | |
4670 | ChardevCommon *common = qapi_ChardevSocket_base(sock); | |
4671 | QIOChannelSocket *sioc = NULL; | |
4672 | ||
4673 | chr = qemu_chr_alloc(common, errp); | |
4674 | if (!chr) { | |
4675 | return NULL; | |
4676 | } | |
4677 | s = g_new0(TCPCharDriver, 1); | |
4678 | ||
4679 | s->is_unix = addr->type == SOCKET_ADDRESS_KIND_UNIX; | |
4680 | s->is_listen = is_listen; | |
4681 | s->is_telnet = is_telnet; | |
4682 | s->do_nodelay = do_nodelay; | |
4683 | if (sock->tls_creds) { | |
4684 | Object *creds; | |
4685 | creds = object_resolve_path_component( | |
4686 | object_get_objects_root(), sock->tls_creds); | |
4687 | if (!creds) { | |
4688 | error_setg(errp, "No TLS credentials with id '%s'", | |
4689 | sock->tls_creds); | |
4690 | goto error; | |
4691 | } | |
4692 | s->tls_creds = (QCryptoTLSCreds *) | |
4693 | object_dynamic_cast(creds, | |
4694 | TYPE_QCRYPTO_TLS_CREDS); | |
4695 | if (!s->tls_creds) { | |
4696 | error_setg(errp, "Object with id '%s' is not TLS credentials", | |
4697 | sock->tls_creds); | |
4698 | goto error; | |
4699 | } | |
4700 | object_ref(OBJECT(s->tls_creds)); | |
4701 | if (is_listen) { | |
4702 | if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_SERVER) { | |
4703 | error_setg(errp, "%s", | |
4704 | "Expected TLS credentials for server endpoint"); | |
4705 | goto error; | |
4706 | } | |
4707 | } else { | |
4708 | if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT) { | |
4709 | error_setg(errp, "%s", | |
4710 | "Expected TLS credentials for client endpoint"); | |
4711 | goto error; | |
4712 | } | |
4713 | } | |
4714 | } | |
4715 | ||
4716 | s->addr = QAPI_CLONE(SocketAddress, sock->addr); | |
4717 | ||
4718 | qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_RECONNECTABLE); | |
4719 | if (s->is_unix) { | |
4720 | qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_FD_PASS); | |
4721 | } | |
4722 | ||
4723 | chr->opaque = s; | |
4724 | chr->chr_wait_connected = tcp_chr_wait_connected; | |
4725 | chr->chr_write = tcp_chr_write; | |
4726 | chr->chr_sync_read = tcp_chr_sync_read; | |
4727 | chr->chr_free = tcp_chr_free; | |
4728 | chr->chr_disconnect = tcp_chr_disconnect; | |
4729 | chr->get_msgfds = tcp_get_msgfds; | |
4730 | chr->set_msgfds = tcp_set_msgfds; | |
4731 | chr->chr_add_client = tcp_chr_add_client; | |
4732 | chr->chr_add_watch = tcp_chr_add_watch; | |
4733 | chr->chr_update_read_handler = tcp_chr_update_read_handler; | |
4734 | /* be isn't opened until we get a connection */ | |
4735 | *be_opened = false; | |
4736 | ||
4737 | chr->filename = SocketAddress_to_str("disconnected:", | |
4738 | addr, is_listen, is_telnet); | |
4739 | ||
4740 | if (is_listen) { | |
4741 | if (is_telnet) { | |
4742 | s->do_telnetopt = 1; | |
4743 | } | |
4744 | } else if (reconnect > 0) { | |
4745 | s->reconnect_time = reconnect; | |
4746 | } | |
4747 | ||
4748 | if (s->reconnect_time) { | |
4749 | sioc = qio_channel_socket_new(); | |
4750 | tcp_chr_set_client_ioc_name(chr, sioc); | |
4751 | qio_channel_socket_connect_async(sioc, s->addr, | |
4752 | qemu_chr_socket_connected, | |
4753 | chr, NULL); | |
4754 | } else { | |
4755 | if (s->is_listen) { | |
4756 | char *name; | |
4757 | sioc = qio_channel_socket_new(); | |
4758 | ||
4759 | name = g_strdup_printf("chardev-tcp-listener-%s", chr->label); | |
4760 | qio_channel_set_name(QIO_CHANNEL(sioc), name); | |
4761 | g_free(name); | |
4762 | ||
4763 | if (qio_channel_socket_listen_sync(sioc, s->addr, errp) < 0) { | |
4764 | goto error; | |
4765 | } | |
4766 | s->listen_ioc = sioc; | |
4767 | if (is_waitconnect && | |
4768 | qemu_chr_wait_connected(chr, errp) < 0) { | |
4769 | goto error; | |
4770 | } | |
4771 | if (!s->ioc) { | |
4772 | s->listen_tag = qio_channel_add_watch( | |
4773 | QIO_CHANNEL(s->listen_ioc), G_IO_IN, | |
4774 | tcp_chr_accept, chr, NULL); | |
4775 | } | |
4776 | } else if (qemu_chr_wait_connected(chr, errp) < 0) { | |
4777 | goto error; | |
4778 | } | |
4779 | } | |
4780 | ||
4781 | return chr; | |
4782 | ||
4783 | error: | |
4784 | if (sioc) { | |
4785 | object_unref(OBJECT(sioc)); | |
4786 | } | |
4787 | if (s->tls_creds) { | |
4788 | object_unref(OBJECT(s->tls_creds)); | |
4789 | } | |
4790 | g_free(s); | |
4791 | qemu_chr_free_common(chr); | |
4792 | return NULL; | |
4793 | } | |
4794 | ||
4795 | static CharDriverState *qmp_chardev_open_udp(const char *id, | |
4796 | ChardevBackend *backend, | |
4797 | ChardevReturn *ret, | |
4798 | bool *be_opened, | |
4799 | Error **errp) | |
4800 | { | |
4801 | ChardevUdp *udp = backend->u.udp.data; | |
4802 | ChardevCommon *common = qapi_ChardevUdp_base(udp); | |
4803 | QIOChannelSocket *sioc = qio_channel_socket_new(); | |
4804 | char *name; | |
4805 | CharDriverState *chr; | |
4806 | ||
4807 | if (qio_channel_socket_dgram_sync(sioc, | |
4808 | udp->local, udp->remote, | |
4809 | errp) < 0) { | |
4810 | object_unref(OBJECT(sioc)); | |
4811 | return NULL; | |
4812 | } | |
4813 | chr = qemu_chr_open_udp(sioc, common, be_opened, errp); | |
4814 | ||
4815 | name = g_strdup_printf("chardev-udp-%s", chr->label); | |
4816 | qio_channel_set_name(QIO_CHANNEL(sioc), name); | |
4817 | g_free(name); | |
4818 | ||
4819 | return chr; | |
4820 | } | |
4821 | ||
4822 | ||
4823 | bool qemu_chr_has_feature(CharDriverState *chr, | |
4824 | CharDriverFeature feature) | |
4825 | { | |
4826 | return test_bit(feature, chr->features); | |
4827 | } | |
4828 | ||
4829 | void qemu_chr_set_feature(CharDriverState *chr, | |
4830 | CharDriverFeature feature) | |
4831 | { | |
4832 | return set_bit(feature, chr->features); | |
4833 | } | |
4834 | ||
4835 | ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend, | |
4836 | Error **errp) | |
4837 | { | |
4838 | ChardevReturn *ret = g_new0(ChardevReturn, 1); | |
4839 | CharDriverState *chr = NULL; | |
4840 | Error *local_err = NULL; | |
4841 | GSList *i; | |
4842 | CharDriver *cd; | |
4843 | bool be_opened = true; | |
4844 | ||
4845 | chr = qemu_chr_find(id); | |
4846 | if (chr) { | |
4847 | error_setg(errp, "Chardev '%s' already exists", id); | |
4848 | goto out_error; | |
4849 | } | |
4850 | ||
4851 | for (i = backends; i; i = i->next) { | |
4852 | cd = i->data; | |
4853 | ||
4854 | if (cd->kind == backend->type) { | |
4855 | chr = cd->create(id, backend, ret, &be_opened, &local_err); | |
4856 | if (local_err) { | |
4857 | error_propagate(errp, local_err); | |
4858 | goto out_error; | |
4859 | } | |
4860 | break; | |
4861 | } | |
4862 | } | |
4863 | ||
4864 | if (chr == NULL) { | |
4865 | assert(!i); | |
4866 | error_setg(errp, "chardev backend not available"); | |
4867 | goto out_error; | |
4868 | } | |
4869 | ||
4870 | chr->label = g_strdup(id); | |
4871 | if (!chr->filename) { | |
4872 | chr->filename = g_strdup(ChardevBackendKind_lookup[backend->type]); | |
4873 | } | |
4874 | if (be_opened) { | |
4875 | qemu_chr_be_event(chr, CHR_EVENT_OPENED); | |
4876 | } | |
4877 | QTAILQ_INSERT_TAIL(&chardevs, chr, next); | |
4878 | return ret; | |
4879 | ||
4880 | out_error: | |
4881 | g_free(ret); | |
4882 | return NULL; | |
4883 | } | |
4884 | ||
4885 | void qmp_chardev_remove(const char *id, Error **errp) | |
4886 | { | |
4887 | CharDriverState *chr; | |
4888 | ||
4889 | chr = qemu_chr_find(id); | |
4890 | if (chr == NULL) { | |
4891 | error_setg(errp, "Chardev '%s' not found", id); | |
4892 | return; | |
4893 | } | |
4894 | if (qemu_chr_is_busy(chr)) { | |
4895 | error_setg(errp, "Chardev '%s' is busy", id); | |
4896 | return; | |
4897 | } | |
4898 | if (chr->replay) { | |
4899 | error_setg(errp, | |
4900 | "Chardev '%s' cannot be unplugged in record/replay mode", id); | |
4901 | return; | |
4902 | } | |
4903 | qemu_chr_delete(chr); | |
4904 | } | |
4905 | ||
4906 | void qemu_chr_cleanup(void) | |
4907 | { | |
4908 | CharDriverState *chr, *tmp; | |
4909 | ||
4910 | QTAILQ_FOREACH_SAFE(chr, &chardevs, next, tmp) { | |
4911 | qemu_chr_delete(chr); | |
4912 | } | |
4913 | } | |
4914 | ||
4915 | static void register_types(void) | |
4916 | { | |
4917 | register_char_driver("null", CHARDEV_BACKEND_KIND_NULL, NULL, | |
4918 | qemu_chr_open_null); | |
4919 | register_char_driver("socket", CHARDEV_BACKEND_KIND_SOCKET, | |
4920 | qemu_chr_parse_socket, qmp_chardev_open_socket); | |
4921 | register_char_driver("udp", CHARDEV_BACKEND_KIND_UDP, qemu_chr_parse_udp, | |
4922 | qmp_chardev_open_udp); | |
4923 | register_char_driver("ringbuf", CHARDEV_BACKEND_KIND_RINGBUF, | |
4924 | qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf); | |
4925 | register_char_driver("file", CHARDEV_BACKEND_KIND_FILE, | |
4926 | qemu_chr_parse_file_out, qmp_chardev_open_file); | |
4927 | register_char_driver("stdio", CHARDEV_BACKEND_KIND_STDIO, | |
4928 | qemu_chr_parse_stdio, qemu_chr_open_stdio); | |
4929 | #if defined HAVE_CHARDEV_SERIAL | |
4930 | register_char_driver("serial", CHARDEV_BACKEND_KIND_SERIAL, | |
4931 | qemu_chr_parse_serial, qmp_chardev_open_serial); | |
4932 | register_char_driver("tty", CHARDEV_BACKEND_KIND_SERIAL, | |
4933 | qemu_chr_parse_serial, qmp_chardev_open_serial); | |
4934 | #endif | |
4935 | #ifdef HAVE_CHARDEV_PARPORT | |
4936 | register_char_driver("parallel", CHARDEV_BACKEND_KIND_PARALLEL, | |
4937 | qemu_chr_parse_parallel, qmp_chardev_open_parallel); | |
4938 | register_char_driver("parport", CHARDEV_BACKEND_KIND_PARALLEL, | |
4939 | qemu_chr_parse_parallel, qmp_chardev_open_parallel); | |
4940 | #endif | |
4941 | #ifdef HAVE_CHARDEV_PTY | |
4942 | register_char_driver("pty", CHARDEV_BACKEND_KIND_PTY, NULL, | |
4943 | qemu_chr_open_pty); | |
4944 | #endif | |
4945 | #ifdef _WIN32 | |
4946 | register_char_driver("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL, | |
4947 | qemu_chr_open_win_con); | |
4948 | #endif | |
4949 | register_char_driver("pipe", CHARDEV_BACKEND_KIND_PIPE, | |
4950 | qemu_chr_parse_pipe, qemu_chr_open_pipe); | |
4951 | register_char_driver("mux", CHARDEV_BACKEND_KIND_MUX, qemu_chr_parse_mux, | |
4952 | qemu_chr_open_mux); | |
4953 | /* Bug-compatibility: */ | |
4954 | register_char_driver("memory", CHARDEV_BACKEND_KIND_MEMORY, | |
4955 | qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf); | |
4956 | /* this must be done after machine init, since we register FEs with muxes | |
4957 | * as part of realize functions like serial_isa_realizefn when -nographic | |
4958 | * is specified | |
4959 | */ | |
4960 | qemu_add_machine_init_done_notifier(&muxes_realize_notify); | |
4961 | } | |
4962 | ||
4963 | type_init(register_types); |