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1 | /* | |
2 | * QEMU System Emulator | |
3 | * | |
4 | * Copyright (c) 2003-2008 Fabrice Bellard | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
24 | #include "qemu/osdep.h" | |
25 | #include "qemu-common.h" | |
26 | #include "qemu/cutils.h" | |
27 | #include "monitor/monitor.h" | |
28 | #include "sysemu/sysemu.h" | |
29 | #include "sysemu/block-backend.h" | |
30 | #include "qemu/error-report.h" | |
31 | #include "qemu/timer.h" | |
32 | #include "sysemu/char.h" | |
33 | #include "hw/usb.h" | |
34 | #include "qmp-commands.h" | |
35 | #include "qapi/qmp-input-visitor.h" | |
36 | #include "qapi/qmp-output-visitor.h" | |
37 | #include "qapi-visit.h" | |
38 | #include "qemu/base64.h" | |
39 | #include "io/channel-socket.h" | |
40 | #include "io/channel-file.h" | |
41 | #include "io/channel-tls.h" | |
42 | #include "sysemu/replay.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/mman.h> | |
51 | #include <sys/ioctl.h> | |
52 | #include <sys/resource.h> | |
53 | #include <sys/socket.h> | |
54 | #include <netinet/in.h> | |
55 | #include <net/if.h> | |
56 | #include <arpa/inet.h> | |
57 | #include <netdb.h> | |
58 | #include <sys/select.h> | |
59 | #ifdef CONFIG_BSD | |
60 | #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) | |
61 | #include <dev/ppbus/ppi.h> | |
62 | #include <dev/ppbus/ppbconf.h> | |
63 | #elif defined(__DragonFly__) | |
64 | #include <dev/misc/ppi/ppi.h> | |
65 | #include <bus/ppbus/ppbconf.h> | |
66 | #endif | |
67 | #else | |
68 | #ifdef __linux__ | |
69 | #include <linux/ppdev.h> | |
70 | #include <linux/parport.h> | |
71 | #endif | |
72 | #ifdef __sun__ | |
73 | #include <sys/ethernet.h> | |
74 | #include <sys/sockio.h> | |
75 | #include <netinet/arp.h> | |
76 | #include <netinet/in.h> | |
77 | #include <netinet/in_systm.h> | |
78 | #include <netinet/ip.h> | |
79 | #include <netinet/ip_icmp.h> // must come after ip.h | |
80 | #include <netinet/udp.h> | |
81 | #include <netinet/tcp.h> | |
82 | #endif | |
83 | #endif | |
84 | #endif | |
85 | ||
86 | #include "qemu/sockets.h" | |
87 | #include "ui/qemu-spice.h" | |
88 | ||
89 | #define READ_BUF_LEN 4096 | |
90 | #define READ_RETRIES 10 | |
91 | #define TCP_MAX_FDS 16 | |
92 | ||
93 | /***********************************************************/ | |
94 | /* Socket address helpers */ | |
95 | ||
96 | static char *SocketAddress_to_str(const char *prefix, SocketAddress *addr, | |
97 | bool is_listen, bool is_telnet) | |
98 | { | |
99 | switch (addr->type) { | |
100 | case SOCKET_ADDRESS_KIND_INET: | |
101 | return g_strdup_printf("%s%s:%s:%s%s", prefix, | |
102 | is_telnet ? "telnet" : "tcp", | |
103 | addr->u.inet.data->host, | |
104 | addr->u.inet.data->port, | |
105 | is_listen ? ",server" : ""); | |
106 | break; | |
107 | case SOCKET_ADDRESS_KIND_UNIX: | |
108 | return g_strdup_printf("%sunix:%s%s", prefix, | |
109 | addr->u.q_unix.data->path, | |
110 | is_listen ? ",server" : ""); | |
111 | break; | |
112 | case SOCKET_ADDRESS_KIND_FD: | |
113 | return g_strdup_printf("%sfd:%s%s", prefix, addr->u.fd.data->str, | |
114 | is_listen ? ",server" : ""); | |
115 | break; | |
116 | default: | |
117 | abort(); | |
118 | } | |
119 | } | |
120 | ||
121 | static char *sockaddr_to_str(struct sockaddr_storage *ss, socklen_t ss_len, | |
122 | struct sockaddr_storage *ps, socklen_t ps_len, | |
123 | bool is_listen, bool is_telnet) | |
124 | { | |
125 | char shost[NI_MAXHOST], sserv[NI_MAXSERV]; | |
126 | char phost[NI_MAXHOST], pserv[NI_MAXSERV]; | |
127 | const char *left = "", *right = ""; | |
128 | ||
129 | switch (ss->ss_family) { | |
130 | #ifndef _WIN32 | |
131 | case AF_UNIX: | |
132 | return g_strdup_printf("unix:%s%s", | |
133 | ((struct sockaddr_un *)(ss))->sun_path, | |
134 | is_listen ? ",server" : ""); | |
135 | #endif | |
136 | case AF_INET6: | |
137 | left = "["; | |
138 | right = "]"; | |
139 | /* fall through */ | |
140 | case AF_INET: | |
141 | getnameinfo((struct sockaddr *) ss, ss_len, shost, sizeof(shost), | |
142 | sserv, sizeof(sserv), NI_NUMERICHOST | NI_NUMERICSERV); | |
143 | getnameinfo((struct sockaddr *) ps, ps_len, phost, sizeof(phost), | |
144 | pserv, sizeof(pserv), NI_NUMERICHOST | NI_NUMERICSERV); | |
145 | return g_strdup_printf("%s:%s%s%s:%s%s <-> %s%s%s:%s", | |
146 | is_telnet ? "telnet" : "tcp", | |
147 | left, shost, right, sserv, | |
148 | is_listen ? ",server" : "", | |
149 | left, phost, right, pserv); | |
150 | ||
151 | default: | |
152 | return g_strdup_printf("unknown"); | |
153 | } | |
154 | } | |
155 | ||
156 | /***********************************************************/ | |
157 | /* character device */ | |
158 | ||
159 | static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs = | |
160 | QTAILQ_HEAD_INITIALIZER(chardevs); | |
161 | ||
162 | static void qemu_chr_free_common(CharDriverState *chr); | |
163 | ||
164 | CharDriverState *qemu_chr_alloc(ChardevCommon *backend, Error **errp) | |
165 | { | |
166 | CharDriverState *chr = g_malloc0(sizeof(CharDriverState)); | |
167 | qemu_mutex_init(&chr->chr_write_lock); | |
168 | ||
169 | if (backend->has_logfile) { | |
170 | int flags = O_WRONLY | O_CREAT; | |
171 | if (backend->has_logappend && | |
172 | backend->logappend) { | |
173 | flags |= O_APPEND; | |
174 | } else { | |
175 | flags |= O_TRUNC; | |
176 | } | |
177 | chr->logfd = qemu_open(backend->logfile, flags, 0666); | |
178 | if (chr->logfd < 0) { | |
179 | error_setg_errno(errp, errno, | |
180 | "Unable to open logfile %s", | |
181 | backend->logfile); | |
182 | g_free(chr); | |
183 | return NULL; | |
184 | } | |
185 | } else { | |
186 | chr->logfd = -1; | |
187 | } | |
188 | ||
189 | return chr; | |
190 | } | |
191 | ||
192 | void qemu_chr_be_event(CharDriverState *s, int event) | |
193 | { | |
194 | /* Keep track if the char device is open */ | |
195 | switch (event) { | |
196 | case CHR_EVENT_OPENED: | |
197 | s->be_open = 1; | |
198 | break; | |
199 | case CHR_EVENT_CLOSED: | |
200 | s->be_open = 0; | |
201 | break; | |
202 | } | |
203 | ||
204 | if (!s->chr_event) | |
205 | return; | |
206 | s->chr_event(s->handler_opaque, event); | |
207 | } | |
208 | ||
209 | void qemu_chr_be_generic_open(CharDriverState *s) | |
210 | { | |
211 | qemu_chr_be_event(s, CHR_EVENT_OPENED); | |
212 | } | |
213 | ||
214 | ||
215 | /* Not reporting errors from writing to logfile, as logs are | |
216 | * defined to be "best effort" only */ | |
217 | static void qemu_chr_fe_write_log(CharDriverState *s, | |
218 | const uint8_t *buf, size_t len) | |
219 | { | |
220 | size_t done = 0; | |
221 | ssize_t ret; | |
222 | ||
223 | if (s->logfd < 0) { | |
224 | return; | |
225 | } | |
226 | ||
227 | while (done < len) { | |
228 | retry: | |
229 | ret = write(s->logfd, buf + done, len - done); | |
230 | if (ret == -1 && errno == EAGAIN) { | |
231 | g_usleep(100); | |
232 | goto retry; | |
233 | } | |
234 | ||
235 | if (ret <= 0) { | |
236 | return; | |
237 | } | |
238 | done += ret; | |
239 | } | |
240 | } | |
241 | ||
242 | static int qemu_chr_fe_write_buffer(CharDriverState *s, const uint8_t *buf, int len, int *offset) | |
243 | { | |
244 | int res = 0; | |
245 | *offset = 0; | |
246 | ||
247 | qemu_mutex_lock(&s->chr_write_lock); | |
248 | while (*offset < len) { | |
249 | retry: | |
250 | res = s->chr_write(s, buf + *offset, len - *offset); | |
251 | if (res < 0 && errno == EAGAIN) { | |
252 | g_usleep(100); | |
253 | goto retry; | |
254 | } | |
255 | ||
256 | if (res <= 0) { | |
257 | break; | |
258 | } | |
259 | ||
260 | *offset += res; | |
261 | } | |
262 | if (*offset > 0) { | |
263 | qemu_chr_fe_write_log(s, buf, *offset); | |
264 | } | |
265 | qemu_mutex_unlock(&s->chr_write_lock); | |
266 | ||
267 | return res; | |
268 | } | |
269 | ||
270 | int qemu_chr_fe_write(CharDriverState *s, const uint8_t *buf, int len) | |
271 | { | |
272 | int ret; | |
273 | ||
274 | if (s->replay && replay_mode == REPLAY_MODE_PLAY) { | |
275 | int offset; | |
276 | replay_char_write_event_load(&ret, &offset); | |
277 | assert(offset <= len); | |
278 | qemu_chr_fe_write_buffer(s, buf, offset, &offset); | |
279 | return ret; | |
280 | } | |
281 | ||
282 | qemu_mutex_lock(&s->chr_write_lock); | |
283 | ret = s->chr_write(s, buf, len); | |
284 | ||
285 | if (ret > 0) { | |
286 | qemu_chr_fe_write_log(s, buf, ret); | |
287 | } | |
288 | ||
289 | qemu_mutex_unlock(&s->chr_write_lock); | |
290 | ||
291 | if (s->replay && replay_mode == REPLAY_MODE_RECORD) { | |
292 | replay_char_write_event_save(ret, ret < 0 ? 0 : ret); | |
293 | } | |
294 | ||
295 | return ret; | |
296 | } | |
297 | ||
298 | int qemu_chr_fe_write_all(CharDriverState *s, const uint8_t *buf, int len) | |
299 | { | |
300 | int offset; | |
301 | int res; | |
302 | ||
303 | if (s->replay && replay_mode == REPLAY_MODE_PLAY) { | |
304 | replay_char_write_event_load(&res, &offset); | |
305 | assert(offset <= len); | |
306 | qemu_chr_fe_write_buffer(s, buf, offset, &offset); | |
307 | return res; | |
308 | } | |
309 | ||
310 | res = qemu_chr_fe_write_buffer(s, buf, len, &offset); | |
311 | ||
312 | if (s->replay && replay_mode == REPLAY_MODE_RECORD) { | |
313 | replay_char_write_event_save(res, offset); | |
314 | } | |
315 | ||
316 | if (res < 0) { | |
317 | return res; | |
318 | } | |
319 | return offset; | |
320 | } | |
321 | ||
322 | int qemu_chr_fe_read_all(CharDriverState *s, uint8_t *buf, int len) | |
323 | { | |
324 | int offset = 0, counter = 10; | |
325 | int res; | |
326 | ||
327 | if (!s->chr_sync_read) { | |
328 | return 0; | |
329 | } | |
330 | ||
331 | if (s->replay && replay_mode == REPLAY_MODE_PLAY) { | |
332 | return replay_char_read_all_load(buf); | |
333 | } | |
334 | ||
335 | while (offset < len) { | |
336 | retry: | |
337 | res = s->chr_sync_read(s, buf + offset, len - offset); | |
338 | if (res == -1 && errno == EAGAIN) { | |
339 | g_usleep(100); | |
340 | goto retry; | |
341 | } | |
342 | ||
343 | if (res == 0) { | |
344 | break; | |
345 | } | |
346 | ||
347 | if (res < 0) { | |
348 | if (s->replay && replay_mode == REPLAY_MODE_RECORD) { | |
349 | replay_char_read_all_save_error(res); | |
350 | } | |
351 | return res; | |
352 | } | |
353 | ||
354 | offset += res; | |
355 | ||
356 | if (!counter--) { | |
357 | break; | |
358 | } | |
359 | } | |
360 | ||
361 | if (s->replay && replay_mode == REPLAY_MODE_RECORD) { | |
362 | replay_char_read_all_save_buf(buf, offset); | |
363 | } | |
364 | return offset; | |
365 | } | |
366 | ||
367 | int qemu_chr_fe_ioctl(CharDriverState *s, int cmd, void *arg) | |
368 | { | |
369 | int res; | |
370 | if (!s->chr_ioctl || s->replay) { | |
371 | res = -ENOTSUP; | |
372 | } else { | |
373 | res = s->chr_ioctl(s, cmd, arg); | |
374 | } | |
375 | ||
376 | return res; | |
377 | } | |
378 | ||
379 | int qemu_chr_be_can_write(CharDriverState *s) | |
380 | { | |
381 | if (!s->chr_can_read) | |
382 | return 0; | |
383 | return s->chr_can_read(s->handler_opaque); | |
384 | } | |
385 | ||
386 | void qemu_chr_be_write_impl(CharDriverState *s, uint8_t *buf, int len) | |
387 | { | |
388 | if (s->chr_read) { | |
389 | s->chr_read(s->handler_opaque, buf, len); | |
390 | } | |
391 | } | |
392 | ||
393 | void qemu_chr_be_write(CharDriverState *s, uint8_t *buf, int len) | |
394 | { | |
395 | if (s->replay) { | |
396 | if (replay_mode == REPLAY_MODE_PLAY) { | |
397 | return; | |
398 | } | |
399 | replay_chr_be_write(s, buf, len); | |
400 | } else { | |
401 | qemu_chr_be_write_impl(s, buf, len); | |
402 | } | |
403 | } | |
404 | ||
405 | int qemu_chr_fe_get_msgfd(CharDriverState *s) | |
406 | { | |
407 | int fd; | |
408 | int res = (qemu_chr_fe_get_msgfds(s, &fd, 1) == 1) ? fd : -1; | |
409 | if (s->replay) { | |
410 | fprintf(stderr, | |
411 | "Replay: get msgfd is not supported for serial devices yet\n"); | |
412 | exit(1); | |
413 | } | |
414 | return res; | |
415 | } | |
416 | ||
417 | int qemu_chr_fe_get_msgfds(CharDriverState *s, int *fds, int len) | |
418 | { | |
419 | return s->get_msgfds ? s->get_msgfds(s, fds, len) : -1; | |
420 | } | |
421 | ||
422 | int qemu_chr_fe_set_msgfds(CharDriverState *s, int *fds, int num) | |
423 | { | |
424 | return s->set_msgfds ? s->set_msgfds(s, fds, num) : -1; | |
425 | } | |
426 | ||
427 | int qemu_chr_add_client(CharDriverState *s, int fd) | |
428 | { | |
429 | return s->chr_add_client ? s->chr_add_client(s, fd) : -1; | |
430 | } | |
431 | ||
432 | void qemu_chr_accept_input(CharDriverState *s) | |
433 | { | |
434 | if (s->chr_accept_input) | |
435 | s->chr_accept_input(s); | |
436 | qemu_notify_event(); | |
437 | } | |
438 | ||
439 | void qemu_chr_fe_printf(CharDriverState *s, const char *fmt, ...) | |
440 | { | |
441 | char buf[READ_BUF_LEN]; | |
442 | va_list ap; | |
443 | va_start(ap, fmt); | |
444 | vsnprintf(buf, sizeof(buf), fmt, ap); | |
445 | qemu_chr_fe_write(s, (uint8_t *)buf, strlen(buf)); | |
446 | va_end(ap); | |
447 | } | |
448 | ||
449 | static void remove_fd_in_watch(CharDriverState *chr); | |
450 | ||
451 | void qemu_chr_add_handlers(CharDriverState *s, | |
452 | IOCanReadHandler *fd_can_read, | |
453 | IOReadHandler *fd_read, | |
454 | IOEventHandler *fd_event, | |
455 | void *opaque) | |
456 | { | |
457 | int fe_open; | |
458 | ||
459 | if (!opaque && !fd_can_read && !fd_read && !fd_event) { | |
460 | fe_open = 0; | |
461 | remove_fd_in_watch(s); | |
462 | } else { | |
463 | fe_open = 1; | |
464 | } | |
465 | s->chr_can_read = fd_can_read; | |
466 | s->chr_read = fd_read; | |
467 | s->chr_event = fd_event; | |
468 | s->handler_opaque = opaque; | |
469 | if (fe_open && s->chr_update_read_handler) | |
470 | s->chr_update_read_handler(s); | |
471 | ||
472 | if (!s->explicit_fe_open) { | |
473 | qemu_chr_fe_set_open(s, fe_open); | |
474 | } | |
475 | ||
476 | /* We're connecting to an already opened device, so let's make sure we | |
477 | also get the open event */ | |
478 | if (fe_open && s->be_open) { | |
479 | qemu_chr_be_generic_open(s); | |
480 | } | |
481 | } | |
482 | ||
483 | static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len) | |
484 | { | |
485 | return len; | |
486 | } | |
487 | ||
488 | static CharDriverState *qemu_chr_open_null(const char *id, | |
489 | ChardevBackend *backend, | |
490 | ChardevReturn *ret, | |
491 | Error **errp) | |
492 | { | |
493 | CharDriverState *chr; | |
494 | ChardevCommon *common = backend->u.null.data; | |
495 | ||
496 | chr = qemu_chr_alloc(common, errp); | |
497 | if (!chr) { | |
498 | return NULL; | |
499 | } | |
500 | chr->chr_write = null_chr_write; | |
501 | chr->explicit_be_open = true; | |
502 | return chr; | |
503 | } | |
504 | ||
505 | /* MUX driver for serial I/O splitting */ | |
506 | #define MAX_MUX 4 | |
507 | #define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */ | |
508 | #define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1) | |
509 | typedef struct { | |
510 | IOCanReadHandler *chr_can_read[MAX_MUX]; | |
511 | IOReadHandler *chr_read[MAX_MUX]; | |
512 | IOEventHandler *chr_event[MAX_MUX]; | |
513 | void *ext_opaque[MAX_MUX]; | |
514 | CharDriverState *drv; | |
515 | int focus; | |
516 | int mux_cnt; | |
517 | int term_got_escape; | |
518 | int max_size; | |
519 | /* Intermediate input buffer allows to catch escape sequences even if the | |
520 | currently active device is not accepting any input - but only until it | |
521 | is full as well. */ | |
522 | unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE]; | |
523 | int prod[MAX_MUX]; | |
524 | int cons[MAX_MUX]; | |
525 | int timestamps; | |
526 | ||
527 | /* Protected by the CharDriverState chr_write_lock. */ | |
528 | int linestart; | |
529 | int64_t timestamps_start; | |
530 | } MuxDriver; | |
531 | ||
532 | ||
533 | /* Called with chr_write_lock held. */ | |
534 | static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len) | |
535 | { | |
536 | MuxDriver *d = chr->opaque; | |
537 | int ret; | |
538 | if (!d->timestamps) { | |
539 | ret = qemu_chr_fe_write(d->drv, buf, len); | |
540 | } else { | |
541 | int i; | |
542 | ||
543 | ret = 0; | |
544 | for (i = 0; i < len; i++) { | |
545 | if (d->linestart) { | |
546 | char buf1[64]; | |
547 | int64_t ti; | |
548 | int secs; | |
549 | ||
550 | ti = qemu_clock_get_ms(QEMU_CLOCK_REALTIME); | |
551 | if (d->timestamps_start == -1) | |
552 | d->timestamps_start = ti; | |
553 | ti -= d->timestamps_start; | |
554 | secs = ti / 1000; | |
555 | snprintf(buf1, sizeof(buf1), | |
556 | "[%02d:%02d:%02d.%03d] ", | |
557 | secs / 3600, | |
558 | (secs / 60) % 60, | |
559 | secs % 60, | |
560 | (int)(ti % 1000)); | |
561 | qemu_chr_fe_write(d->drv, (uint8_t *)buf1, strlen(buf1)); | |
562 | d->linestart = 0; | |
563 | } | |
564 | ret += qemu_chr_fe_write(d->drv, buf+i, 1); | |
565 | if (buf[i] == '\n') { | |
566 | d->linestart = 1; | |
567 | } | |
568 | } | |
569 | } | |
570 | return ret; | |
571 | } | |
572 | ||
573 | static const char * const mux_help[] = { | |
574 | "% h print this help\n\r", | |
575 | "% x exit emulator\n\r", | |
576 | "% s save disk data back to file (if -snapshot)\n\r", | |
577 | "% t toggle console timestamps\n\r", | |
578 | "% b send break (magic sysrq)\n\r", | |
579 | "% c switch between console and monitor\n\r", | |
580 | "% % sends %\n\r", | |
581 | NULL | |
582 | }; | |
583 | ||
584 | int term_escape_char = 0x01; /* ctrl-a is used for escape */ | |
585 | static void mux_print_help(CharDriverState *chr) | |
586 | { | |
587 | int i, j; | |
588 | char ebuf[15] = "Escape-Char"; | |
589 | char cbuf[50] = "\n\r"; | |
590 | ||
591 | if (term_escape_char > 0 && term_escape_char < 26) { | |
592 | snprintf(cbuf, sizeof(cbuf), "\n\r"); | |
593 | snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a'); | |
594 | } else { | |
595 | snprintf(cbuf, sizeof(cbuf), | |
596 | "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r", | |
597 | term_escape_char); | |
598 | } | |
599 | qemu_chr_fe_write(chr, (uint8_t *)cbuf, strlen(cbuf)); | |
600 | for (i = 0; mux_help[i] != NULL; i++) { | |
601 | for (j=0; mux_help[i][j] != '\0'; j++) { | |
602 | if (mux_help[i][j] == '%') | |
603 | qemu_chr_fe_write(chr, (uint8_t *)ebuf, strlen(ebuf)); | |
604 | else | |
605 | qemu_chr_fe_write(chr, (uint8_t *)&mux_help[i][j], 1); | |
606 | } | |
607 | } | |
608 | } | |
609 | ||
610 | static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event) | |
611 | { | |
612 | if (d->chr_event[mux_nr]) | |
613 | d->chr_event[mux_nr](d->ext_opaque[mux_nr], event); | |
614 | } | |
615 | ||
616 | static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch) | |
617 | { | |
618 | if (d->term_got_escape) { | |
619 | d->term_got_escape = 0; | |
620 | if (ch == term_escape_char) | |
621 | goto send_char; | |
622 | switch(ch) { | |
623 | case '?': | |
624 | case 'h': | |
625 | mux_print_help(chr); | |
626 | break; | |
627 | case 'x': | |
628 | { | |
629 | const char *term = "QEMU: Terminated\n\r"; | |
630 | qemu_chr_fe_write(chr, (uint8_t *)term, strlen(term)); | |
631 | exit(0); | |
632 | break; | |
633 | } | |
634 | case 's': | |
635 | blk_commit_all(); | |
636 | break; | |
637 | case 'b': | |
638 | qemu_chr_be_event(chr, CHR_EVENT_BREAK); | |
639 | break; | |
640 | case 'c': | |
641 | /* Switch to the next registered device */ | |
642 | mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT); | |
643 | d->focus++; | |
644 | if (d->focus >= d->mux_cnt) | |
645 | d->focus = 0; | |
646 | mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN); | |
647 | break; | |
648 | case 't': | |
649 | d->timestamps = !d->timestamps; | |
650 | d->timestamps_start = -1; | |
651 | d->linestart = 0; | |
652 | break; | |
653 | } | |
654 | } else if (ch == term_escape_char) { | |
655 | d->term_got_escape = 1; | |
656 | } else { | |
657 | send_char: | |
658 | return 1; | |
659 | } | |
660 | return 0; | |
661 | } | |
662 | ||
663 | static void mux_chr_accept_input(CharDriverState *chr) | |
664 | { | |
665 | MuxDriver *d = chr->opaque; | |
666 | int m = d->focus; | |
667 | ||
668 | while (d->prod[m] != d->cons[m] && | |
669 | d->chr_can_read[m] && | |
670 | d->chr_can_read[m](d->ext_opaque[m])) { | |
671 | d->chr_read[m](d->ext_opaque[m], | |
672 | &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1); | |
673 | } | |
674 | } | |
675 | ||
676 | static int mux_chr_can_read(void *opaque) | |
677 | { | |
678 | CharDriverState *chr = opaque; | |
679 | MuxDriver *d = chr->opaque; | |
680 | int m = d->focus; | |
681 | ||
682 | if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE) | |
683 | return 1; | |
684 | if (d->chr_can_read[m]) | |
685 | return d->chr_can_read[m](d->ext_opaque[m]); | |
686 | return 0; | |
687 | } | |
688 | ||
689 | static void mux_chr_read(void *opaque, const uint8_t *buf, int size) | |
690 | { | |
691 | CharDriverState *chr = opaque; | |
692 | MuxDriver *d = chr->opaque; | |
693 | int m = d->focus; | |
694 | int i; | |
695 | ||
696 | mux_chr_accept_input (opaque); | |
697 | ||
698 | for(i = 0; i < size; i++) | |
699 | if (mux_proc_byte(chr, d, buf[i])) { | |
700 | if (d->prod[m] == d->cons[m] && | |
701 | d->chr_can_read[m] && | |
702 | d->chr_can_read[m](d->ext_opaque[m])) | |
703 | d->chr_read[m](d->ext_opaque[m], &buf[i], 1); | |
704 | else | |
705 | d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i]; | |
706 | } | |
707 | } | |
708 | ||
709 | static void mux_chr_event(void *opaque, int event) | |
710 | { | |
711 | CharDriverState *chr = opaque; | |
712 | MuxDriver *d = chr->opaque; | |
713 | int i; | |
714 | ||
715 | /* Send the event to all registered listeners */ | |
716 | for (i = 0; i < d->mux_cnt; i++) | |
717 | mux_chr_send_event(d, i, event); | |
718 | } | |
719 | ||
720 | static void mux_chr_update_read_handler(CharDriverState *chr) | |
721 | { | |
722 | MuxDriver *d = chr->opaque; | |
723 | ||
724 | if (d->mux_cnt >= MAX_MUX) { | |
725 | fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n"); | |
726 | return; | |
727 | } | |
728 | d->ext_opaque[d->mux_cnt] = chr->handler_opaque; | |
729 | d->chr_can_read[d->mux_cnt] = chr->chr_can_read; | |
730 | d->chr_read[d->mux_cnt] = chr->chr_read; | |
731 | d->chr_event[d->mux_cnt] = chr->chr_event; | |
732 | /* Fix up the real driver with mux routines */ | |
733 | if (d->mux_cnt == 0) { | |
734 | qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read, | |
735 | mux_chr_event, chr); | |
736 | } | |
737 | if (d->focus != -1) { | |
738 | mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT); | |
739 | } | |
740 | d->focus = d->mux_cnt; | |
741 | d->mux_cnt++; | |
742 | mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN); | |
743 | } | |
744 | ||
745 | static bool muxes_realized; | |
746 | ||
747 | /** | |
748 | * Called after processing of default and command-line-specified | |
749 | * chardevs to deliver CHR_EVENT_OPENED events to any FEs attached | |
750 | * to a mux chardev. This is done here to ensure that | |
751 | * output/prompts/banners are only displayed for the FE that has | |
752 | * focus when initial command-line processing/machine init is | |
753 | * completed. | |
754 | * | |
755 | * After this point, any new FE attached to any new or existing | |
756 | * mux will receive CHR_EVENT_OPENED notifications for the BE | |
757 | * immediately. | |
758 | */ | |
759 | static void muxes_realize_done(Notifier *notifier, void *unused) | |
760 | { | |
761 | CharDriverState *chr; | |
762 | ||
763 | QTAILQ_FOREACH(chr, &chardevs, next) { | |
764 | if (chr->is_mux) { | |
765 | MuxDriver *d = chr->opaque; | |
766 | int i; | |
767 | ||
768 | /* send OPENED to all already-attached FEs */ | |
769 | for (i = 0; i < d->mux_cnt; i++) { | |
770 | mux_chr_send_event(d, i, CHR_EVENT_OPENED); | |
771 | } | |
772 | /* mark mux as OPENED so any new FEs will immediately receive | |
773 | * OPENED event | |
774 | */ | |
775 | qemu_chr_be_generic_open(chr); | |
776 | } | |
777 | } | |
778 | muxes_realized = true; | |
779 | } | |
780 | ||
781 | static Notifier muxes_realize_notify = { | |
782 | .notify = muxes_realize_done, | |
783 | }; | |
784 | ||
785 | static GSource *mux_chr_add_watch(CharDriverState *s, GIOCondition cond) | |
786 | { | |
787 | MuxDriver *d = s->opaque; | |
788 | return d->drv->chr_add_watch(d->drv, cond); | |
789 | } | |
790 | ||
791 | static CharDriverState *qemu_chr_open_mux(const char *id, | |
792 | ChardevBackend *backend, | |
793 | ChardevReturn *ret, Error **errp) | |
794 | { | |
795 | ChardevMux *mux = backend->u.mux.data; | |
796 | CharDriverState *chr, *drv; | |
797 | MuxDriver *d; | |
798 | ChardevCommon *common = qapi_ChardevMux_base(mux); | |
799 | ||
800 | drv = qemu_chr_find(mux->chardev); | |
801 | if (drv == NULL) { | |
802 | error_setg(errp, "mux: base chardev %s not found", mux->chardev); | |
803 | return NULL; | |
804 | } | |
805 | ||
806 | chr = qemu_chr_alloc(common, errp); | |
807 | if (!chr) { | |
808 | return NULL; | |
809 | } | |
810 | d = g_new0(MuxDriver, 1); | |
811 | ||
812 | chr->opaque = d; | |
813 | d->drv = drv; | |
814 | d->focus = -1; | |
815 | chr->chr_write = mux_chr_write; | |
816 | chr->chr_update_read_handler = mux_chr_update_read_handler; | |
817 | chr->chr_accept_input = mux_chr_accept_input; | |
818 | /* Frontend guest-open / -close notification is not support with muxes */ | |
819 | chr->chr_set_fe_open = NULL; | |
820 | if (drv->chr_add_watch) { | |
821 | chr->chr_add_watch = mux_chr_add_watch; | |
822 | } | |
823 | /* only default to opened state if we've realized the initial | |
824 | * set of muxes | |
825 | */ | |
826 | chr->explicit_be_open = muxes_realized ? 0 : 1; | |
827 | chr->is_mux = 1; | |
828 | ||
829 | return chr; | |
830 | } | |
831 | ||
832 | ||
833 | typedef struct IOWatchPoll | |
834 | { | |
835 | GSource parent; | |
836 | ||
837 | QIOChannel *ioc; | |
838 | GSource *src; | |
839 | ||
840 | IOCanReadHandler *fd_can_read; | |
841 | GSourceFunc fd_read; | |
842 | void *opaque; | |
843 | } IOWatchPoll; | |
844 | ||
845 | static IOWatchPoll *io_watch_poll_from_source(GSource *source) | |
846 | { | |
847 | return container_of(source, IOWatchPoll, parent); | |
848 | } | |
849 | ||
850 | static gboolean io_watch_poll_prepare(GSource *source, gint *timeout_) | |
851 | { | |
852 | IOWatchPoll *iwp = io_watch_poll_from_source(source); | |
853 | bool now_active = iwp->fd_can_read(iwp->opaque) > 0; | |
854 | bool was_active = iwp->src != NULL; | |
855 | if (was_active == now_active) { | |
856 | return FALSE; | |
857 | } | |
858 | ||
859 | if (now_active) { | |
860 | iwp->src = qio_channel_create_watch( | |
861 | iwp->ioc, G_IO_IN | G_IO_ERR | G_IO_HUP | G_IO_NVAL); | |
862 | g_source_set_callback(iwp->src, iwp->fd_read, iwp->opaque, NULL); | |
863 | g_source_attach(iwp->src, NULL); | |
864 | } else { | |
865 | g_source_destroy(iwp->src); | |
866 | g_source_unref(iwp->src); | |
867 | iwp->src = NULL; | |
868 | } | |
869 | return FALSE; | |
870 | } | |
871 | ||
872 | static gboolean io_watch_poll_check(GSource *source) | |
873 | { | |
874 | return FALSE; | |
875 | } | |
876 | ||
877 | static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback, | |
878 | gpointer user_data) | |
879 | { | |
880 | abort(); | |
881 | } | |
882 | ||
883 | static void io_watch_poll_finalize(GSource *source) | |
884 | { | |
885 | /* Due to a glib bug, removing the last reference to a source | |
886 | * inside a finalize callback causes recursive locking (and a | |
887 | * deadlock). This is not a problem inside other callbacks, | |
888 | * including dispatch callbacks, so we call io_remove_watch_poll | |
889 | * to remove this source. At this point, iwp->src must | |
890 | * be NULL, or we would leak it. | |
891 | * | |
892 | * This would be solved much more elegantly by child sources, | |
893 | * but we support older glib versions that do not have them. | |
894 | */ | |
895 | IOWatchPoll *iwp = io_watch_poll_from_source(source); | |
896 | assert(iwp->src == NULL); | |
897 | } | |
898 | ||
899 | static GSourceFuncs io_watch_poll_funcs = { | |
900 | .prepare = io_watch_poll_prepare, | |
901 | .check = io_watch_poll_check, | |
902 | .dispatch = io_watch_poll_dispatch, | |
903 | .finalize = io_watch_poll_finalize, | |
904 | }; | |
905 | ||
906 | /* Can only be used for read */ | |
907 | static guint io_add_watch_poll(QIOChannel *ioc, | |
908 | IOCanReadHandler *fd_can_read, | |
909 | QIOChannelFunc fd_read, | |
910 | gpointer user_data) | |
911 | { | |
912 | IOWatchPoll *iwp; | |
913 | int tag; | |
914 | ||
915 | iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs, sizeof(IOWatchPoll)); | |
916 | iwp->fd_can_read = fd_can_read; | |
917 | iwp->opaque = user_data; | |
918 | iwp->ioc = ioc; | |
919 | iwp->fd_read = (GSourceFunc) fd_read; | |
920 | iwp->src = NULL; | |
921 | ||
922 | tag = g_source_attach(&iwp->parent, NULL); | |
923 | g_source_unref(&iwp->parent); | |
924 | return tag; | |
925 | } | |
926 | ||
927 | static void io_remove_watch_poll(guint tag) | |
928 | { | |
929 | GSource *source; | |
930 | IOWatchPoll *iwp; | |
931 | ||
932 | g_return_if_fail (tag > 0); | |
933 | ||
934 | source = g_main_context_find_source_by_id(NULL, tag); | |
935 | g_return_if_fail (source != NULL); | |
936 | ||
937 | iwp = io_watch_poll_from_source(source); | |
938 | if (iwp->src) { | |
939 | g_source_destroy(iwp->src); | |
940 | g_source_unref(iwp->src); | |
941 | iwp->src = NULL; | |
942 | } | |
943 | g_source_destroy(&iwp->parent); | |
944 | } | |
945 | ||
946 | static void remove_fd_in_watch(CharDriverState *chr) | |
947 | { | |
948 | if (chr->fd_in_tag) { | |
949 | io_remove_watch_poll(chr->fd_in_tag); | |
950 | chr->fd_in_tag = 0; | |
951 | } | |
952 | } | |
953 | ||
954 | ||
955 | static int io_channel_send_full(QIOChannel *ioc, | |
956 | const void *buf, size_t len, | |
957 | int *fds, size_t nfds) | |
958 | { | |
959 | size_t offset = 0; | |
960 | ||
961 | while (offset < len) { | |
962 | ssize_t ret = 0; | |
963 | struct iovec iov = { .iov_base = (char *)buf + offset, | |
964 | .iov_len = len - offset }; | |
965 | ||
966 | ret = qio_channel_writev_full( | |
967 | ioc, &iov, 1, | |
968 | fds, nfds, NULL); | |
969 | if (ret == QIO_CHANNEL_ERR_BLOCK) { | |
970 | if (offset) { | |
971 | return offset; | |
972 | } | |
973 | ||
974 | errno = EAGAIN; | |
975 | return -1; | |
976 | } else if (ret < 0) { | |
977 | errno = EINVAL; | |
978 | return -1; | |
979 | } | |
980 | ||
981 | offset += ret; | |
982 | } | |
983 | ||
984 | return offset; | |
985 | } | |
986 | ||
987 | ||
988 | #ifndef _WIN32 | |
989 | static int io_channel_send(QIOChannel *ioc, const void *buf, size_t len) | |
990 | { | |
991 | return io_channel_send_full(ioc, buf, len, NULL, 0); | |
992 | } | |
993 | ||
994 | ||
995 | typedef struct FDCharDriver { | |
996 | CharDriverState *chr; | |
997 | QIOChannel *ioc_in, *ioc_out; | |
998 | int max_size; | |
999 | } FDCharDriver; | |
1000 | ||
1001 | /* Called with chr_write_lock held. */ | |
1002 | static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len) | |
1003 | { | |
1004 | FDCharDriver *s = chr->opaque; | |
1005 | ||
1006 | return io_channel_send(s->ioc_out, buf, len); | |
1007 | } | |
1008 | ||
1009 | static gboolean fd_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque) | |
1010 | { | |
1011 | CharDriverState *chr = opaque; | |
1012 | FDCharDriver *s = chr->opaque; | |
1013 | int len; | |
1014 | uint8_t buf[READ_BUF_LEN]; | |
1015 | ssize_t ret; | |
1016 | ||
1017 | len = sizeof(buf); | |
1018 | if (len > s->max_size) { | |
1019 | len = s->max_size; | |
1020 | } | |
1021 | if (len == 0) { | |
1022 | return TRUE; | |
1023 | } | |
1024 | ||
1025 | ret = qio_channel_read( | |
1026 | chan, (gchar *)buf, len, NULL); | |
1027 | if (ret == 0) { | |
1028 | remove_fd_in_watch(chr); | |
1029 | qemu_chr_be_event(chr, CHR_EVENT_CLOSED); | |
1030 | return FALSE; | |
1031 | } | |
1032 | if (ret > 0) { | |
1033 | qemu_chr_be_write(chr, buf, ret); | |
1034 | } | |
1035 | ||
1036 | return TRUE; | |
1037 | } | |
1038 | ||
1039 | static int fd_chr_read_poll(void *opaque) | |
1040 | { | |
1041 | CharDriverState *chr = opaque; | |
1042 | FDCharDriver *s = chr->opaque; | |
1043 | ||
1044 | s->max_size = qemu_chr_be_can_write(chr); | |
1045 | return s->max_size; | |
1046 | } | |
1047 | ||
1048 | static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond) | |
1049 | { | |
1050 | FDCharDriver *s = chr->opaque; | |
1051 | return qio_channel_create_watch(s->ioc_out, cond); | |
1052 | } | |
1053 | ||
1054 | static void fd_chr_update_read_handler(CharDriverState *chr) | |
1055 | { | |
1056 | FDCharDriver *s = chr->opaque; | |
1057 | ||
1058 | remove_fd_in_watch(chr); | |
1059 | if (s->ioc_in) { | |
1060 | chr->fd_in_tag = io_add_watch_poll(s->ioc_in, | |
1061 | fd_chr_read_poll, | |
1062 | fd_chr_read, chr); | |
1063 | } | |
1064 | } | |
1065 | ||
1066 | static void fd_chr_close(struct CharDriverState *chr) | |
1067 | { | |
1068 | FDCharDriver *s = chr->opaque; | |
1069 | ||
1070 | remove_fd_in_watch(chr); | |
1071 | if (s->ioc_in) { | |
1072 | object_unref(OBJECT(s->ioc_in)); | |
1073 | } | |
1074 | if (s->ioc_out) { | |
1075 | object_unref(OBJECT(s->ioc_out)); | |
1076 | } | |
1077 | ||
1078 | g_free(s); | |
1079 | qemu_chr_be_event(chr, CHR_EVENT_CLOSED); | |
1080 | } | |
1081 | ||
1082 | /* open a character device to a unix fd */ | |
1083 | static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out, | |
1084 | ChardevCommon *backend, Error **errp) | |
1085 | { | |
1086 | CharDriverState *chr; | |
1087 | FDCharDriver *s; | |
1088 | ||
1089 | chr = qemu_chr_alloc(backend, errp); | |
1090 | if (!chr) { | |
1091 | return NULL; | |
1092 | } | |
1093 | s = g_new0(FDCharDriver, 1); | |
1094 | s->ioc_in = QIO_CHANNEL(qio_channel_file_new_fd(fd_in)); | |
1095 | s->ioc_out = QIO_CHANNEL(qio_channel_file_new_fd(fd_out)); | |
1096 | qemu_set_nonblock(fd_out); | |
1097 | s->chr = chr; | |
1098 | chr->opaque = s; | |
1099 | chr->chr_add_watch = fd_chr_add_watch; | |
1100 | chr->chr_write = fd_chr_write; | |
1101 | chr->chr_update_read_handler = fd_chr_update_read_handler; | |
1102 | chr->chr_close = fd_chr_close; | |
1103 | ||
1104 | return chr; | |
1105 | } | |
1106 | ||
1107 | static CharDriverState *qemu_chr_open_pipe(const char *id, | |
1108 | ChardevBackend *backend, | |
1109 | ChardevReturn *ret, | |
1110 | Error **errp) | |
1111 | { | |
1112 | ChardevHostdev *opts = backend->u.pipe.data; | |
1113 | int fd_in, fd_out; | |
1114 | char *filename_in; | |
1115 | char *filename_out; | |
1116 | const char *filename = opts->device; | |
1117 | ChardevCommon *common = qapi_ChardevHostdev_base(opts); | |
1118 | ||
1119 | ||
1120 | filename_in = g_strdup_printf("%s.in", filename); | |
1121 | filename_out = g_strdup_printf("%s.out", filename); | |
1122 | TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY)); | |
1123 | TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY)); | |
1124 | g_free(filename_in); | |
1125 | g_free(filename_out); | |
1126 | if (fd_in < 0 || fd_out < 0) { | |
1127 | if (fd_in >= 0) | |
1128 | close(fd_in); | |
1129 | if (fd_out >= 0) | |
1130 | close(fd_out); | |
1131 | TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY)); | |
1132 | if (fd_in < 0) { | |
1133 | error_setg_file_open(errp, errno, filename); | |
1134 | return NULL; | |
1135 | } | |
1136 | } | |
1137 | return qemu_chr_open_fd(fd_in, fd_out, common, errp); | |
1138 | } | |
1139 | ||
1140 | /* init terminal so that we can grab keys */ | |
1141 | static struct termios oldtty; | |
1142 | static int old_fd0_flags; | |
1143 | static bool stdio_in_use; | |
1144 | static bool stdio_allow_signal; | |
1145 | static bool stdio_echo_state; | |
1146 | ||
1147 | static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo); | |
1148 | ||
1149 | static void term_exit(void) | |
1150 | { | |
1151 | tcsetattr (0, TCSANOW, &oldtty); | |
1152 | fcntl(0, F_SETFL, old_fd0_flags); | |
1153 | } | |
1154 | ||
1155 | static void term_stdio_handler(int sig) | |
1156 | { | |
1157 | /* restore echo after resume from suspend. */ | |
1158 | qemu_chr_set_echo_stdio(NULL, stdio_echo_state); | |
1159 | } | |
1160 | ||
1161 | static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo) | |
1162 | { | |
1163 | struct termios tty; | |
1164 | ||
1165 | stdio_echo_state = echo; | |
1166 | tty = oldtty; | |
1167 | if (!echo) { | |
1168 | tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP | |
1169 | |INLCR|IGNCR|ICRNL|IXON); | |
1170 | tty.c_oflag |= OPOST; | |
1171 | tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN); | |
1172 | tty.c_cflag &= ~(CSIZE|PARENB); | |
1173 | tty.c_cflag |= CS8; | |
1174 | tty.c_cc[VMIN] = 1; | |
1175 | tty.c_cc[VTIME] = 0; | |
1176 | } | |
1177 | if (!stdio_allow_signal) | |
1178 | tty.c_lflag &= ~ISIG; | |
1179 | ||
1180 | tcsetattr (0, TCSANOW, &tty); | |
1181 | } | |
1182 | ||
1183 | static void qemu_chr_close_stdio(struct CharDriverState *chr) | |
1184 | { | |
1185 | term_exit(); | |
1186 | fd_chr_close(chr); | |
1187 | } | |
1188 | ||
1189 | static CharDriverState *qemu_chr_open_stdio(const char *id, | |
1190 | ChardevBackend *backend, | |
1191 | ChardevReturn *ret, | |
1192 | Error **errp) | |
1193 | { | |
1194 | ChardevStdio *opts = backend->u.stdio.data; | |
1195 | CharDriverState *chr; | |
1196 | struct sigaction act; | |
1197 | ChardevCommon *common = qapi_ChardevStdio_base(opts); | |
1198 | ||
1199 | if (is_daemonized()) { | |
1200 | error_setg(errp, "cannot use stdio with -daemonize"); | |
1201 | return NULL; | |
1202 | } | |
1203 | ||
1204 | if (stdio_in_use) { | |
1205 | error_setg(errp, "cannot use stdio by multiple character devices"); | |
1206 | return NULL; | |
1207 | } | |
1208 | ||
1209 | stdio_in_use = true; | |
1210 | old_fd0_flags = fcntl(0, F_GETFL); | |
1211 | tcgetattr(0, &oldtty); | |
1212 | qemu_set_nonblock(0); | |
1213 | atexit(term_exit); | |
1214 | ||
1215 | memset(&act, 0, sizeof(act)); | |
1216 | act.sa_handler = term_stdio_handler; | |
1217 | sigaction(SIGCONT, &act, NULL); | |
1218 | ||
1219 | chr = qemu_chr_open_fd(0, 1, common, errp); | |
1220 | chr->chr_close = qemu_chr_close_stdio; | |
1221 | chr->chr_set_echo = qemu_chr_set_echo_stdio; | |
1222 | if (opts->has_signal) { | |
1223 | stdio_allow_signal = opts->signal; | |
1224 | } | |
1225 | qemu_chr_fe_set_echo(chr, false); | |
1226 | ||
1227 | return chr; | |
1228 | } | |
1229 | ||
1230 | #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \ | |
1231 | || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \ | |
1232 | || defined(__GLIBC__) | |
1233 | ||
1234 | #define HAVE_CHARDEV_SERIAL 1 | |
1235 | #define HAVE_CHARDEV_PTY 1 | |
1236 | ||
1237 | typedef struct { | |
1238 | QIOChannel *ioc; | |
1239 | int read_bytes; | |
1240 | ||
1241 | /* Protected by the CharDriverState chr_write_lock. */ | |
1242 | int connected; | |
1243 | guint timer_tag; | |
1244 | guint open_tag; | |
1245 | } PtyCharDriver; | |
1246 | ||
1247 | static void pty_chr_update_read_handler_locked(CharDriverState *chr); | |
1248 | static void pty_chr_state(CharDriverState *chr, int connected); | |
1249 | ||
1250 | static gboolean pty_chr_timer(gpointer opaque) | |
1251 | { | |
1252 | struct CharDriverState *chr = opaque; | |
1253 | PtyCharDriver *s = chr->opaque; | |
1254 | ||
1255 | qemu_mutex_lock(&chr->chr_write_lock); | |
1256 | s->timer_tag = 0; | |
1257 | s->open_tag = 0; | |
1258 | if (!s->connected) { | |
1259 | /* Next poll ... */ | |
1260 | pty_chr_update_read_handler_locked(chr); | |
1261 | } | |
1262 | qemu_mutex_unlock(&chr->chr_write_lock); | |
1263 | return FALSE; | |
1264 | } | |
1265 | ||
1266 | /* Called with chr_write_lock held. */ | |
1267 | static void pty_chr_rearm_timer(CharDriverState *chr, int ms) | |
1268 | { | |
1269 | PtyCharDriver *s = chr->opaque; | |
1270 | ||
1271 | if (s->timer_tag) { | |
1272 | g_source_remove(s->timer_tag); | |
1273 | s->timer_tag = 0; | |
1274 | } | |
1275 | ||
1276 | if (ms == 1000) { | |
1277 | s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr); | |
1278 | } else { | |
1279 | s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr); | |
1280 | } | |
1281 | } | |
1282 | ||
1283 | /* Called with chr_write_lock held. */ | |
1284 | static void pty_chr_update_read_handler_locked(CharDriverState *chr) | |
1285 | { | |
1286 | PtyCharDriver *s = chr->opaque; | |
1287 | GPollFD pfd; | |
1288 | int rc; | |
1289 | QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc); | |
1290 | ||
1291 | pfd.fd = fioc->fd; | |
1292 | pfd.events = G_IO_OUT; | |
1293 | pfd.revents = 0; | |
1294 | do { | |
1295 | rc = g_poll(&pfd, 1, 0); | |
1296 | } while (rc == -1 && errno == EINTR); | |
1297 | assert(rc >= 0); | |
1298 | ||
1299 | if (pfd.revents & G_IO_HUP) { | |
1300 | pty_chr_state(chr, 0); | |
1301 | } else { | |
1302 | pty_chr_state(chr, 1); | |
1303 | } | |
1304 | } | |
1305 | ||
1306 | static void pty_chr_update_read_handler(CharDriverState *chr) | |
1307 | { | |
1308 | qemu_mutex_lock(&chr->chr_write_lock); | |
1309 | pty_chr_update_read_handler_locked(chr); | |
1310 | qemu_mutex_unlock(&chr->chr_write_lock); | |
1311 | } | |
1312 | ||
1313 | /* Called with chr_write_lock held. */ | |
1314 | static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len) | |
1315 | { | |
1316 | PtyCharDriver *s = chr->opaque; | |
1317 | ||
1318 | if (!s->connected) { | |
1319 | /* guest sends data, check for (re-)connect */ | |
1320 | pty_chr_update_read_handler_locked(chr); | |
1321 | if (!s->connected) { | |
1322 | return 0; | |
1323 | } | |
1324 | } | |
1325 | return io_channel_send(s->ioc, buf, len); | |
1326 | } | |
1327 | ||
1328 | static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond) | |
1329 | { | |
1330 | PtyCharDriver *s = chr->opaque; | |
1331 | if (!s->connected) { | |
1332 | return NULL; | |
1333 | } | |
1334 | return qio_channel_create_watch(s->ioc, cond); | |
1335 | } | |
1336 | ||
1337 | static int pty_chr_read_poll(void *opaque) | |
1338 | { | |
1339 | CharDriverState *chr = opaque; | |
1340 | PtyCharDriver *s = chr->opaque; | |
1341 | ||
1342 | s->read_bytes = qemu_chr_be_can_write(chr); | |
1343 | return s->read_bytes; | |
1344 | } | |
1345 | ||
1346 | static gboolean pty_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque) | |
1347 | { | |
1348 | CharDriverState *chr = opaque; | |
1349 | PtyCharDriver *s = chr->opaque; | |
1350 | gsize len; | |
1351 | uint8_t buf[READ_BUF_LEN]; | |
1352 | ssize_t ret; | |
1353 | ||
1354 | len = sizeof(buf); | |
1355 | if (len > s->read_bytes) | |
1356 | len = s->read_bytes; | |
1357 | if (len == 0) { | |
1358 | return TRUE; | |
1359 | } | |
1360 | ret = qio_channel_read(s->ioc, (char *)buf, len, NULL); | |
1361 | if (ret <= 0) { | |
1362 | pty_chr_state(chr, 0); | |
1363 | return FALSE; | |
1364 | } else { | |
1365 | pty_chr_state(chr, 1); | |
1366 | qemu_chr_be_write(chr, buf, ret); | |
1367 | } | |
1368 | return TRUE; | |
1369 | } | |
1370 | ||
1371 | static gboolean qemu_chr_be_generic_open_func(gpointer opaque) | |
1372 | { | |
1373 | CharDriverState *chr = opaque; | |
1374 | PtyCharDriver *s = chr->opaque; | |
1375 | ||
1376 | s->open_tag = 0; | |
1377 | qemu_chr_be_generic_open(chr); | |
1378 | return FALSE; | |
1379 | } | |
1380 | ||
1381 | /* Called with chr_write_lock held. */ | |
1382 | static void pty_chr_state(CharDriverState *chr, int connected) | |
1383 | { | |
1384 | PtyCharDriver *s = chr->opaque; | |
1385 | ||
1386 | if (!connected) { | |
1387 | if (s->open_tag) { | |
1388 | g_source_remove(s->open_tag); | |
1389 | s->open_tag = 0; | |
1390 | } | |
1391 | remove_fd_in_watch(chr); | |
1392 | s->connected = 0; | |
1393 | /* (re-)connect poll interval for idle guests: once per second. | |
1394 | * We check more frequently in case the guests sends data to | |
1395 | * the virtual device linked to our pty. */ | |
1396 | pty_chr_rearm_timer(chr, 1000); | |
1397 | } else { | |
1398 | if (s->timer_tag) { | |
1399 | g_source_remove(s->timer_tag); | |
1400 | s->timer_tag = 0; | |
1401 | } | |
1402 | if (!s->connected) { | |
1403 | g_assert(s->open_tag == 0); | |
1404 | s->connected = 1; | |
1405 | s->open_tag = g_idle_add(qemu_chr_be_generic_open_func, chr); | |
1406 | } | |
1407 | if (!chr->fd_in_tag) { | |
1408 | chr->fd_in_tag = io_add_watch_poll(s->ioc, | |
1409 | pty_chr_read_poll, | |
1410 | pty_chr_read, chr); | |
1411 | } | |
1412 | } | |
1413 | } | |
1414 | ||
1415 | static void pty_chr_close(struct CharDriverState *chr) | |
1416 | { | |
1417 | PtyCharDriver *s = chr->opaque; | |
1418 | ||
1419 | qemu_mutex_lock(&chr->chr_write_lock); | |
1420 | pty_chr_state(chr, 0); | |
1421 | object_unref(OBJECT(s->ioc)); | |
1422 | if (s->timer_tag) { | |
1423 | g_source_remove(s->timer_tag); | |
1424 | s->timer_tag = 0; | |
1425 | } | |
1426 | qemu_mutex_unlock(&chr->chr_write_lock); | |
1427 | g_free(s); | |
1428 | qemu_chr_be_event(chr, CHR_EVENT_CLOSED); | |
1429 | } | |
1430 | ||
1431 | static CharDriverState *qemu_chr_open_pty(const char *id, | |
1432 | ChardevBackend *backend, | |
1433 | ChardevReturn *ret, | |
1434 | Error **errp) | |
1435 | { | |
1436 | CharDriverState *chr; | |
1437 | PtyCharDriver *s; | |
1438 | int master_fd, slave_fd; | |
1439 | char pty_name[PATH_MAX]; | |
1440 | ChardevCommon *common = backend->u.pty.data; | |
1441 | ||
1442 | master_fd = qemu_openpty_raw(&slave_fd, pty_name); | |
1443 | if (master_fd < 0) { | |
1444 | error_setg_errno(errp, errno, "Failed to create PTY"); | |
1445 | return NULL; | |
1446 | } | |
1447 | ||
1448 | close(slave_fd); | |
1449 | qemu_set_nonblock(master_fd); | |
1450 | ||
1451 | chr = qemu_chr_alloc(common, errp); | |
1452 | if (!chr) { | |
1453 | close(master_fd); | |
1454 | return NULL; | |
1455 | } | |
1456 | ||
1457 | chr->filename = g_strdup_printf("pty:%s", pty_name); | |
1458 | ret->pty = g_strdup(pty_name); | |
1459 | ret->has_pty = true; | |
1460 | ||
1461 | fprintf(stderr, "char device redirected to %s (label %s)\n", | |
1462 | pty_name, id); | |
1463 | ||
1464 | s = g_new0(PtyCharDriver, 1); | |
1465 | chr->opaque = s; | |
1466 | chr->chr_write = pty_chr_write; | |
1467 | chr->chr_update_read_handler = pty_chr_update_read_handler; | |
1468 | chr->chr_close = pty_chr_close; | |
1469 | chr->chr_add_watch = pty_chr_add_watch; | |
1470 | chr->explicit_be_open = true; | |
1471 | ||
1472 | s->ioc = QIO_CHANNEL(qio_channel_file_new_fd(master_fd)); | |
1473 | s->timer_tag = 0; | |
1474 | ||
1475 | return chr; | |
1476 | } | |
1477 | ||
1478 | static void tty_serial_init(int fd, int speed, | |
1479 | int parity, int data_bits, int stop_bits) | |
1480 | { | |
1481 | struct termios tty; | |
1482 | speed_t spd; | |
1483 | ||
1484 | #if 0 | |
1485 | printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n", | |
1486 | speed, parity, data_bits, stop_bits); | |
1487 | #endif | |
1488 | tcgetattr (fd, &tty); | |
1489 | ||
1490 | #define check_speed(val) if (speed <= val) { spd = B##val; break; } | |
1491 | speed = speed * 10 / 11; | |
1492 | do { | |
1493 | check_speed(50); | |
1494 | check_speed(75); | |
1495 | check_speed(110); | |
1496 | check_speed(134); | |
1497 | check_speed(150); | |
1498 | check_speed(200); | |
1499 | check_speed(300); | |
1500 | check_speed(600); | |
1501 | check_speed(1200); | |
1502 | check_speed(1800); | |
1503 | check_speed(2400); | |
1504 | check_speed(4800); | |
1505 | check_speed(9600); | |
1506 | check_speed(19200); | |
1507 | check_speed(38400); | |
1508 | /* Non-Posix values follow. They may be unsupported on some systems. */ | |
1509 | check_speed(57600); | |
1510 | check_speed(115200); | |
1511 | #ifdef B230400 | |
1512 | check_speed(230400); | |
1513 | #endif | |
1514 | #ifdef B460800 | |
1515 | check_speed(460800); | |
1516 | #endif | |
1517 | #ifdef B500000 | |
1518 | check_speed(500000); | |
1519 | #endif | |
1520 | #ifdef B576000 | |
1521 | check_speed(576000); | |
1522 | #endif | |
1523 | #ifdef B921600 | |
1524 | check_speed(921600); | |
1525 | #endif | |
1526 | #ifdef B1000000 | |
1527 | check_speed(1000000); | |
1528 | #endif | |
1529 | #ifdef B1152000 | |
1530 | check_speed(1152000); | |
1531 | #endif | |
1532 | #ifdef B1500000 | |
1533 | check_speed(1500000); | |
1534 | #endif | |
1535 | #ifdef B2000000 | |
1536 | check_speed(2000000); | |
1537 | #endif | |
1538 | #ifdef B2500000 | |
1539 | check_speed(2500000); | |
1540 | #endif | |
1541 | #ifdef B3000000 | |
1542 | check_speed(3000000); | |
1543 | #endif | |
1544 | #ifdef B3500000 | |
1545 | check_speed(3500000); | |
1546 | #endif | |
1547 | #ifdef B4000000 | |
1548 | check_speed(4000000); | |
1549 | #endif | |
1550 | spd = B115200; | |
1551 | } while (0); | |
1552 | ||
1553 | cfsetispeed(&tty, spd); | |
1554 | cfsetospeed(&tty, spd); | |
1555 | ||
1556 | tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP | |
1557 | |INLCR|IGNCR|ICRNL|IXON); | |
1558 | tty.c_oflag |= OPOST; | |
1559 | tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG); | |
1560 | tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB); | |
1561 | switch(data_bits) { | |
1562 | default: | |
1563 | case 8: | |
1564 | tty.c_cflag |= CS8; | |
1565 | break; | |
1566 | case 7: | |
1567 | tty.c_cflag |= CS7; | |
1568 | break; | |
1569 | case 6: | |
1570 | tty.c_cflag |= CS6; | |
1571 | break; | |
1572 | case 5: | |
1573 | tty.c_cflag |= CS5; | |
1574 | break; | |
1575 | } | |
1576 | switch(parity) { | |
1577 | default: | |
1578 | case 'N': | |
1579 | break; | |
1580 | case 'E': | |
1581 | tty.c_cflag |= PARENB; | |
1582 | break; | |
1583 | case 'O': | |
1584 | tty.c_cflag |= PARENB | PARODD; | |
1585 | break; | |
1586 | } | |
1587 | if (stop_bits == 2) | |
1588 | tty.c_cflag |= CSTOPB; | |
1589 | ||
1590 | tcsetattr (fd, TCSANOW, &tty); | |
1591 | } | |
1592 | ||
1593 | static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg) | |
1594 | { | |
1595 | FDCharDriver *s = chr->opaque; | |
1596 | QIOChannelFile *fioc = QIO_CHANNEL_FILE(s->ioc_in); | |
1597 | ||
1598 | switch(cmd) { | |
1599 | case CHR_IOCTL_SERIAL_SET_PARAMS: | |
1600 | { | |
1601 | QEMUSerialSetParams *ssp = arg; | |
1602 | tty_serial_init(fioc->fd, | |
1603 | ssp->speed, ssp->parity, | |
1604 | ssp->data_bits, ssp->stop_bits); | |
1605 | } | |
1606 | break; | |
1607 | case CHR_IOCTL_SERIAL_SET_BREAK: | |
1608 | { | |
1609 | int enable = *(int *)arg; | |
1610 | if (enable) { | |
1611 | tcsendbreak(fioc->fd, 1); | |
1612 | } | |
1613 | } | |
1614 | break; | |
1615 | case CHR_IOCTL_SERIAL_GET_TIOCM: | |
1616 | { | |
1617 | int sarg = 0; | |
1618 | int *targ = (int *)arg; | |
1619 | ioctl(fioc->fd, TIOCMGET, &sarg); | |
1620 | *targ = 0; | |
1621 | if (sarg & TIOCM_CTS) | |
1622 | *targ |= CHR_TIOCM_CTS; | |
1623 | if (sarg & TIOCM_CAR) | |
1624 | *targ |= CHR_TIOCM_CAR; | |
1625 | if (sarg & TIOCM_DSR) | |
1626 | *targ |= CHR_TIOCM_DSR; | |
1627 | if (sarg & TIOCM_RI) | |
1628 | *targ |= CHR_TIOCM_RI; | |
1629 | if (sarg & TIOCM_DTR) | |
1630 | *targ |= CHR_TIOCM_DTR; | |
1631 | if (sarg & TIOCM_RTS) | |
1632 | *targ |= CHR_TIOCM_RTS; | |
1633 | } | |
1634 | break; | |
1635 | case CHR_IOCTL_SERIAL_SET_TIOCM: | |
1636 | { | |
1637 | int sarg = *(int *)arg; | |
1638 | int targ = 0; | |
1639 | ioctl(fioc->fd, TIOCMGET, &targ); | |
1640 | targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR | |
1641 | | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS); | |
1642 | if (sarg & CHR_TIOCM_CTS) | |
1643 | targ |= TIOCM_CTS; | |
1644 | if (sarg & CHR_TIOCM_CAR) | |
1645 | targ |= TIOCM_CAR; | |
1646 | if (sarg & CHR_TIOCM_DSR) | |
1647 | targ |= TIOCM_DSR; | |
1648 | if (sarg & CHR_TIOCM_RI) | |
1649 | targ |= TIOCM_RI; | |
1650 | if (sarg & CHR_TIOCM_DTR) | |
1651 | targ |= TIOCM_DTR; | |
1652 | if (sarg & CHR_TIOCM_RTS) | |
1653 | targ |= TIOCM_RTS; | |
1654 | ioctl(fioc->fd, TIOCMSET, &targ); | |
1655 | } | |
1656 | break; | |
1657 | default: | |
1658 | return -ENOTSUP; | |
1659 | } | |
1660 | return 0; | |
1661 | } | |
1662 | ||
1663 | static void qemu_chr_close_tty(CharDriverState *chr) | |
1664 | { | |
1665 | fd_chr_close(chr); | |
1666 | } | |
1667 | ||
1668 | static CharDriverState *qemu_chr_open_tty_fd(int fd, | |
1669 | ChardevCommon *backend, | |
1670 | Error **errp) | |
1671 | { | |
1672 | CharDriverState *chr; | |
1673 | ||
1674 | tty_serial_init(fd, 115200, 'N', 8, 1); | |
1675 | chr = qemu_chr_open_fd(fd, fd, backend, errp); | |
1676 | chr->chr_ioctl = tty_serial_ioctl; | |
1677 | chr->chr_close = qemu_chr_close_tty; | |
1678 | return chr; | |
1679 | } | |
1680 | #endif /* __linux__ || __sun__ */ | |
1681 | ||
1682 | #if defined(__linux__) | |
1683 | ||
1684 | #define HAVE_CHARDEV_PARPORT 1 | |
1685 | ||
1686 | typedef struct { | |
1687 | int fd; | |
1688 | int mode; | |
1689 | } ParallelCharDriver; | |
1690 | ||
1691 | static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode) | |
1692 | { | |
1693 | if (s->mode != mode) { | |
1694 | int m = mode; | |
1695 | if (ioctl(s->fd, PPSETMODE, &m) < 0) | |
1696 | return 0; | |
1697 | s->mode = mode; | |
1698 | } | |
1699 | return 1; | |
1700 | } | |
1701 | ||
1702 | static int pp_ioctl(CharDriverState *chr, int cmd, void *arg) | |
1703 | { | |
1704 | ParallelCharDriver *drv = chr->opaque; | |
1705 | int fd = drv->fd; | |
1706 | uint8_t b; | |
1707 | ||
1708 | switch(cmd) { | |
1709 | case CHR_IOCTL_PP_READ_DATA: | |
1710 | if (ioctl(fd, PPRDATA, &b) < 0) | |
1711 | return -ENOTSUP; | |
1712 | *(uint8_t *)arg = b; | |
1713 | break; | |
1714 | case CHR_IOCTL_PP_WRITE_DATA: | |
1715 | b = *(uint8_t *)arg; | |
1716 | if (ioctl(fd, PPWDATA, &b) < 0) | |
1717 | return -ENOTSUP; | |
1718 | break; | |
1719 | case CHR_IOCTL_PP_READ_CONTROL: | |
1720 | if (ioctl(fd, PPRCONTROL, &b) < 0) | |
1721 | return -ENOTSUP; | |
1722 | /* Linux gives only the lowest bits, and no way to know data | |
1723 | direction! For better compatibility set the fixed upper | |
1724 | bits. */ | |
1725 | *(uint8_t *)arg = b | 0xc0; | |
1726 | break; | |
1727 | case CHR_IOCTL_PP_WRITE_CONTROL: | |
1728 | b = *(uint8_t *)arg; | |
1729 | if (ioctl(fd, PPWCONTROL, &b) < 0) | |
1730 | return -ENOTSUP; | |
1731 | break; | |
1732 | case CHR_IOCTL_PP_READ_STATUS: | |
1733 | if (ioctl(fd, PPRSTATUS, &b) < 0) | |
1734 | return -ENOTSUP; | |
1735 | *(uint8_t *)arg = b; | |
1736 | break; | |
1737 | case CHR_IOCTL_PP_DATA_DIR: | |
1738 | if (ioctl(fd, PPDATADIR, (int *)arg) < 0) | |
1739 | return -ENOTSUP; | |
1740 | break; | |
1741 | case CHR_IOCTL_PP_EPP_READ_ADDR: | |
1742 | if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) { | |
1743 | struct ParallelIOArg *parg = arg; | |
1744 | int n = read(fd, parg->buffer, parg->count); | |
1745 | if (n != parg->count) { | |
1746 | return -EIO; | |
1747 | } | |
1748 | } | |
1749 | break; | |
1750 | case CHR_IOCTL_PP_EPP_READ: | |
1751 | if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) { | |
1752 | struct ParallelIOArg *parg = arg; | |
1753 | int n = read(fd, parg->buffer, parg->count); | |
1754 | if (n != parg->count) { | |
1755 | return -EIO; | |
1756 | } | |
1757 | } | |
1758 | break; | |
1759 | case CHR_IOCTL_PP_EPP_WRITE_ADDR: | |
1760 | if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) { | |
1761 | struct ParallelIOArg *parg = arg; | |
1762 | int n = write(fd, parg->buffer, parg->count); | |
1763 | if (n != parg->count) { | |
1764 | return -EIO; | |
1765 | } | |
1766 | } | |
1767 | break; | |
1768 | case CHR_IOCTL_PP_EPP_WRITE: | |
1769 | if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) { | |
1770 | struct ParallelIOArg *parg = arg; | |
1771 | int n = write(fd, parg->buffer, parg->count); | |
1772 | if (n != parg->count) { | |
1773 | return -EIO; | |
1774 | } | |
1775 | } | |
1776 | break; | |
1777 | default: | |
1778 | return -ENOTSUP; | |
1779 | } | |
1780 | return 0; | |
1781 | } | |
1782 | ||
1783 | static void pp_close(CharDriverState *chr) | |
1784 | { | |
1785 | ParallelCharDriver *drv = chr->opaque; | |
1786 | int fd = drv->fd; | |
1787 | ||
1788 | pp_hw_mode(drv, IEEE1284_MODE_COMPAT); | |
1789 | ioctl(fd, PPRELEASE); | |
1790 | close(fd); | |
1791 | g_free(drv); | |
1792 | qemu_chr_be_event(chr, CHR_EVENT_CLOSED); | |
1793 | } | |
1794 | ||
1795 | static CharDriverState *qemu_chr_open_pp_fd(int fd, | |
1796 | ChardevCommon *backend, | |
1797 | Error **errp) | |
1798 | { | |
1799 | CharDriverState *chr; | |
1800 | ParallelCharDriver *drv; | |
1801 | ||
1802 | if (ioctl(fd, PPCLAIM) < 0) { | |
1803 | error_setg_errno(errp, errno, "not a parallel port"); | |
1804 | close(fd); | |
1805 | return NULL; | |
1806 | } | |
1807 | ||
1808 | chr = qemu_chr_alloc(backend, errp); | |
1809 | if (!chr) { | |
1810 | return NULL; | |
1811 | } | |
1812 | ||
1813 | drv = g_new0(ParallelCharDriver, 1); | |
1814 | chr->opaque = drv; | |
1815 | chr->chr_write = null_chr_write; | |
1816 | chr->chr_ioctl = pp_ioctl; | |
1817 | chr->chr_close = pp_close; | |
1818 | ||
1819 | drv->fd = fd; | |
1820 | drv->mode = IEEE1284_MODE_COMPAT; | |
1821 | ||
1822 | return chr; | |
1823 | } | |
1824 | #endif /* __linux__ */ | |
1825 | ||
1826 | #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__) | |
1827 | ||
1828 | #define HAVE_CHARDEV_PARPORT 1 | |
1829 | ||
1830 | static int pp_ioctl(CharDriverState *chr, int cmd, void *arg) | |
1831 | { | |
1832 | int fd = (int)(intptr_t)chr->opaque; | |
1833 | uint8_t b; | |
1834 | ||
1835 | switch(cmd) { | |
1836 | case CHR_IOCTL_PP_READ_DATA: | |
1837 | if (ioctl(fd, PPIGDATA, &b) < 0) | |
1838 | return -ENOTSUP; | |
1839 | *(uint8_t *)arg = b; | |
1840 | break; | |
1841 | case CHR_IOCTL_PP_WRITE_DATA: | |
1842 | b = *(uint8_t *)arg; | |
1843 | if (ioctl(fd, PPISDATA, &b) < 0) | |
1844 | return -ENOTSUP; | |
1845 | break; | |
1846 | case CHR_IOCTL_PP_READ_CONTROL: | |
1847 | if (ioctl(fd, PPIGCTRL, &b) < 0) | |
1848 | return -ENOTSUP; | |
1849 | *(uint8_t *)arg = b; | |
1850 | break; | |
1851 | case CHR_IOCTL_PP_WRITE_CONTROL: | |
1852 | b = *(uint8_t *)arg; | |
1853 | if (ioctl(fd, PPISCTRL, &b) < 0) | |
1854 | return -ENOTSUP; | |
1855 | break; | |
1856 | case CHR_IOCTL_PP_READ_STATUS: | |
1857 | if (ioctl(fd, PPIGSTATUS, &b) < 0) | |
1858 | return -ENOTSUP; | |
1859 | *(uint8_t *)arg = b; | |
1860 | break; | |
1861 | default: | |
1862 | return -ENOTSUP; | |
1863 | } | |
1864 | return 0; | |
1865 | } | |
1866 | ||
1867 | static CharDriverState *qemu_chr_open_pp_fd(int fd, | |
1868 | ChardevCommon *backend, | |
1869 | Error **errp) | |
1870 | { | |
1871 | CharDriverState *chr; | |
1872 | ||
1873 | chr = qemu_chr_alloc(backend, errp); | |
1874 | if (!chr) { | |
1875 | return NULL; | |
1876 | } | |
1877 | chr->opaque = (void *)(intptr_t)fd; | |
1878 | chr->chr_write = null_chr_write; | |
1879 | chr->chr_ioctl = pp_ioctl; | |
1880 | chr->explicit_be_open = true; | |
1881 | return chr; | |
1882 | } | |
1883 | #endif | |
1884 | ||
1885 | #else /* _WIN32 */ | |
1886 | ||
1887 | #define HAVE_CHARDEV_SERIAL 1 | |
1888 | ||
1889 | typedef struct { | |
1890 | int max_size; | |
1891 | HANDLE hcom, hrecv, hsend; | |
1892 | OVERLAPPED orecv; | |
1893 | BOOL fpipe; | |
1894 | DWORD len; | |
1895 | ||
1896 | /* Protected by the CharDriverState chr_write_lock. */ | |
1897 | OVERLAPPED osend; | |
1898 | } WinCharState; | |
1899 | ||
1900 | typedef struct { | |
1901 | HANDLE hStdIn; | |
1902 | HANDLE hInputReadyEvent; | |
1903 | HANDLE hInputDoneEvent; | |
1904 | HANDLE hInputThread; | |
1905 | uint8_t win_stdio_buf; | |
1906 | } WinStdioCharState; | |
1907 | ||
1908 | #define NSENDBUF 2048 | |
1909 | #define NRECVBUF 2048 | |
1910 | #define MAXCONNECT 1 | |
1911 | #define NTIMEOUT 5000 | |
1912 | ||
1913 | static int win_chr_poll(void *opaque); | |
1914 | static int win_chr_pipe_poll(void *opaque); | |
1915 | ||
1916 | static void win_chr_close(CharDriverState *chr) | |
1917 | { | |
1918 | WinCharState *s = chr->opaque; | |
1919 | ||
1920 | if (s->hsend) { | |
1921 | CloseHandle(s->hsend); | |
1922 | s->hsend = NULL; | |
1923 | } | |
1924 | if (s->hrecv) { | |
1925 | CloseHandle(s->hrecv); | |
1926 | s->hrecv = NULL; | |
1927 | } | |
1928 | if (s->hcom) { | |
1929 | CloseHandle(s->hcom); | |
1930 | s->hcom = NULL; | |
1931 | } | |
1932 | if (s->fpipe) | |
1933 | qemu_del_polling_cb(win_chr_pipe_poll, chr); | |
1934 | else | |
1935 | qemu_del_polling_cb(win_chr_poll, chr); | |
1936 | ||
1937 | qemu_chr_be_event(chr, CHR_EVENT_CLOSED); | |
1938 | } | |
1939 | ||
1940 | static int win_chr_init(CharDriverState *chr, const char *filename, Error **errp) | |
1941 | { | |
1942 | WinCharState *s = chr->opaque; | |
1943 | COMMCONFIG comcfg; | |
1944 | COMMTIMEOUTS cto = { 0, 0, 0, 0, 0}; | |
1945 | COMSTAT comstat; | |
1946 | DWORD size; | |
1947 | DWORD err; | |
1948 | ||
1949 | s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL); | |
1950 | if (!s->hsend) { | |
1951 | error_setg(errp, "Failed CreateEvent"); | |
1952 | goto fail; | |
1953 | } | |
1954 | s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL); | |
1955 | if (!s->hrecv) { | |
1956 | error_setg(errp, "Failed CreateEvent"); | |
1957 | goto fail; | |
1958 | } | |
1959 | ||
1960 | s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL, | |
1961 | OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0); | |
1962 | if (s->hcom == INVALID_HANDLE_VALUE) { | |
1963 | error_setg(errp, "Failed CreateFile (%lu)", GetLastError()); | |
1964 | s->hcom = NULL; | |
1965 | goto fail; | |
1966 | } | |
1967 | ||
1968 | if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) { | |
1969 | error_setg(errp, "Failed SetupComm"); | |
1970 | goto fail; | |
1971 | } | |
1972 | ||
1973 | ZeroMemory(&comcfg, sizeof(COMMCONFIG)); | |
1974 | size = sizeof(COMMCONFIG); | |
1975 | GetDefaultCommConfig(filename, &comcfg, &size); | |
1976 | comcfg.dcb.DCBlength = sizeof(DCB); | |
1977 | CommConfigDialog(filename, NULL, &comcfg); | |
1978 | ||
1979 | if (!SetCommState(s->hcom, &comcfg.dcb)) { | |
1980 | error_setg(errp, "Failed SetCommState"); | |
1981 | goto fail; | |
1982 | } | |
1983 | ||
1984 | if (!SetCommMask(s->hcom, EV_ERR)) { | |
1985 | error_setg(errp, "Failed SetCommMask"); | |
1986 | goto fail; | |
1987 | } | |
1988 | ||
1989 | cto.ReadIntervalTimeout = MAXDWORD; | |
1990 | if (!SetCommTimeouts(s->hcom, &cto)) { | |
1991 | error_setg(errp, "Failed SetCommTimeouts"); | |
1992 | goto fail; | |
1993 | } | |
1994 | ||
1995 | if (!ClearCommError(s->hcom, &err, &comstat)) { | |
1996 | error_setg(errp, "Failed ClearCommError"); | |
1997 | goto fail; | |
1998 | } | |
1999 | qemu_add_polling_cb(win_chr_poll, chr); | |
2000 | return 0; | |
2001 | ||
2002 | fail: | |
2003 | win_chr_close(chr); | |
2004 | return -1; | |
2005 | } | |
2006 | ||
2007 | /* Called with chr_write_lock held. */ | |
2008 | static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1) | |
2009 | { | |
2010 | WinCharState *s = chr->opaque; | |
2011 | DWORD len, ret, size, err; | |
2012 | ||
2013 | len = len1; | |
2014 | ZeroMemory(&s->osend, sizeof(s->osend)); | |
2015 | s->osend.hEvent = s->hsend; | |
2016 | while (len > 0) { | |
2017 | if (s->hsend) | |
2018 | ret = WriteFile(s->hcom, buf, len, &size, &s->osend); | |
2019 | else | |
2020 | ret = WriteFile(s->hcom, buf, len, &size, NULL); | |
2021 | if (!ret) { | |
2022 | err = GetLastError(); | |
2023 | if (err == ERROR_IO_PENDING) { | |
2024 | ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE); | |
2025 | if (ret) { | |
2026 | buf += size; | |
2027 | len -= size; | |
2028 | } else { | |
2029 | break; | |
2030 | } | |
2031 | } else { | |
2032 | break; | |
2033 | } | |
2034 | } else { | |
2035 | buf += size; | |
2036 | len -= size; | |
2037 | } | |
2038 | } | |
2039 | return len1 - len; | |
2040 | } | |
2041 | ||
2042 | static int win_chr_read_poll(CharDriverState *chr) | |
2043 | { | |
2044 | WinCharState *s = chr->opaque; | |
2045 | ||
2046 | s->max_size = qemu_chr_be_can_write(chr); | |
2047 | return s->max_size; | |
2048 | } | |
2049 | ||
2050 | static void win_chr_readfile(CharDriverState *chr) | |
2051 | { | |
2052 | WinCharState *s = chr->opaque; | |
2053 | int ret, err; | |
2054 | uint8_t buf[READ_BUF_LEN]; | |
2055 | DWORD size; | |
2056 | ||
2057 | ZeroMemory(&s->orecv, sizeof(s->orecv)); | |
2058 | s->orecv.hEvent = s->hrecv; | |
2059 | ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv); | |
2060 | if (!ret) { | |
2061 | err = GetLastError(); | |
2062 | if (err == ERROR_IO_PENDING) { | |
2063 | ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE); | |
2064 | } | |
2065 | } | |
2066 | ||
2067 | if (size > 0) { | |
2068 | qemu_chr_be_write(chr, buf, size); | |
2069 | } | |
2070 | } | |
2071 | ||
2072 | static void win_chr_read(CharDriverState *chr) | |
2073 | { | |
2074 | WinCharState *s = chr->opaque; | |
2075 | ||
2076 | if (s->len > s->max_size) | |
2077 | s->len = s->max_size; | |
2078 | if (s->len == 0) | |
2079 | return; | |
2080 | ||
2081 | win_chr_readfile(chr); | |
2082 | } | |
2083 | ||
2084 | static int win_chr_poll(void *opaque) | |
2085 | { | |
2086 | CharDriverState *chr = opaque; | |
2087 | WinCharState *s = chr->opaque; | |
2088 | COMSTAT status; | |
2089 | DWORD comerr; | |
2090 | ||
2091 | ClearCommError(s->hcom, &comerr, &status); | |
2092 | if (status.cbInQue > 0) { | |
2093 | s->len = status.cbInQue; | |
2094 | win_chr_read_poll(chr); | |
2095 | win_chr_read(chr); | |
2096 | return 1; | |
2097 | } | |
2098 | return 0; | |
2099 | } | |
2100 | ||
2101 | static CharDriverState *qemu_chr_open_win_path(const char *filename, | |
2102 | ChardevCommon *backend, | |
2103 | Error **errp) | |
2104 | { | |
2105 | CharDriverState *chr; | |
2106 | WinCharState *s; | |
2107 | ||
2108 | chr = qemu_chr_alloc(backend, errp); | |
2109 | if (!chr) { | |
2110 | return NULL; | |
2111 | } | |
2112 | s = g_new0(WinCharState, 1); | |
2113 | chr->opaque = s; | |
2114 | chr->chr_write = win_chr_write; | |
2115 | chr->chr_close = win_chr_close; | |
2116 | ||
2117 | if (win_chr_init(chr, filename, errp) < 0) { | |
2118 | g_free(s); | |
2119 | qemu_chr_free_common(chr); | |
2120 | return NULL; | |
2121 | } | |
2122 | return chr; | |
2123 | } | |
2124 | ||
2125 | static int win_chr_pipe_poll(void *opaque) | |
2126 | { | |
2127 | CharDriverState *chr = opaque; | |
2128 | WinCharState *s = chr->opaque; | |
2129 | DWORD size; | |
2130 | ||
2131 | PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL); | |
2132 | if (size > 0) { | |
2133 | s->len = size; | |
2134 | win_chr_read_poll(chr); | |
2135 | win_chr_read(chr); | |
2136 | return 1; | |
2137 | } | |
2138 | return 0; | |
2139 | } | |
2140 | ||
2141 | static int win_chr_pipe_init(CharDriverState *chr, const char *filename, | |
2142 | Error **errp) | |
2143 | { | |
2144 | WinCharState *s = chr->opaque; | |
2145 | OVERLAPPED ov; | |
2146 | int ret; | |
2147 | DWORD size; | |
2148 | char *openname; | |
2149 | ||
2150 | s->fpipe = TRUE; | |
2151 | ||
2152 | s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL); | |
2153 | if (!s->hsend) { | |
2154 | error_setg(errp, "Failed CreateEvent"); | |
2155 | goto fail; | |
2156 | } | |
2157 | s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL); | |
2158 | if (!s->hrecv) { | |
2159 | error_setg(errp, "Failed CreateEvent"); | |
2160 | goto fail; | |
2161 | } | |
2162 | ||
2163 | openname = g_strdup_printf("\\\\.\\pipe\\%s", filename); | |
2164 | s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED, | |
2165 | PIPE_TYPE_BYTE | PIPE_READMODE_BYTE | | |
2166 | PIPE_WAIT, | |
2167 | MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL); | |
2168 | g_free(openname); | |
2169 | if (s->hcom == INVALID_HANDLE_VALUE) { | |
2170 | error_setg(errp, "Failed CreateNamedPipe (%lu)", GetLastError()); | |
2171 | s->hcom = NULL; | |
2172 | goto fail; | |
2173 | } | |
2174 | ||
2175 | ZeroMemory(&ov, sizeof(ov)); | |
2176 | ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); | |
2177 | ret = ConnectNamedPipe(s->hcom, &ov); | |
2178 | if (ret) { | |
2179 | error_setg(errp, "Failed ConnectNamedPipe"); | |
2180 | goto fail; | |
2181 | } | |
2182 | ||
2183 | ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE); | |
2184 | if (!ret) { | |
2185 | error_setg(errp, "Failed GetOverlappedResult"); | |
2186 | if (ov.hEvent) { | |
2187 | CloseHandle(ov.hEvent); | |
2188 | ov.hEvent = NULL; | |
2189 | } | |
2190 | goto fail; | |
2191 | } | |
2192 | ||
2193 | if (ov.hEvent) { | |
2194 | CloseHandle(ov.hEvent); | |
2195 | ov.hEvent = NULL; | |
2196 | } | |
2197 | qemu_add_polling_cb(win_chr_pipe_poll, chr); | |
2198 | return 0; | |
2199 | ||
2200 | fail: | |
2201 | win_chr_close(chr); | |
2202 | return -1; | |
2203 | } | |
2204 | ||
2205 | ||
2206 | static CharDriverState *qemu_chr_open_pipe(const char *id, | |
2207 | ChardevBackend *backend, | |
2208 | ChardevReturn *ret, | |
2209 | Error **errp) | |
2210 | { | |
2211 | ChardevHostdev *opts = backend->u.pipe.data; | |
2212 | const char *filename = opts->device; | |
2213 | CharDriverState *chr; | |
2214 | WinCharState *s; | |
2215 | ChardevCommon *common = qapi_ChardevHostdev_base(opts); | |
2216 | ||
2217 | chr = qemu_chr_alloc(common, errp); | |
2218 | if (!chr) { | |
2219 | return NULL; | |
2220 | } | |
2221 | s = g_new0(WinCharState, 1); | |
2222 | chr->opaque = s; | |
2223 | chr->chr_write = win_chr_write; | |
2224 | chr->chr_close = win_chr_close; | |
2225 | ||
2226 | if (win_chr_pipe_init(chr, filename, errp) < 0) { | |
2227 | g_free(s); | |
2228 | qemu_chr_free_common(chr); | |
2229 | return NULL; | |
2230 | } | |
2231 | return chr; | |
2232 | } | |
2233 | ||
2234 | static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out, | |
2235 | ChardevCommon *backend, | |
2236 | Error **errp) | |
2237 | { | |
2238 | CharDriverState *chr; | |
2239 | WinCharState *s; | |
2240 | ||
2241 | chr = qemu_chr_alloc(backend, errp); | |
2242 | if (!chr) { | |
2243 | return NULL; | |
2244 | } | |
2245 | s = g_new0(WinCharState, 1); | |
2246 | s->hcom = fd_out; | |
2247 | chr->opaque = s; | |
2248 | chr->chr_write = win_chr_write; | |
2249 | return chr; | |
2250 | } | |
2251 | ||
2252 | static CharDriverState *qemu_chr_open_win_con(const char *id, | |
2253 | ChardevBackend *backend, | |
2254 | ChardevReturn *ret, | |
2255 | Error **errp) | |
2256 | { | |
2257 | ChardevCommon *common = backend->u.console.data; | |
2258 | return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE), | |
2259 | common, errp); | |
2260 | } | |
2261 | ||
2262 | static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len) | |
2263 | { | |
2264 | HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE); | |
2265 | DWORD dwSize; | |
2266 | int len1; | |
2267 | ||
2268 | len1 = len; | |
2269 | ||
2270 | while (len1 > 0) { | |
2271 | if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) { | |
2272 | break; | |
2273 | } | |
2274 | buf += dwSize; | |
2275 | len1 -= dwSize; | |
2276 | } | |
2277 | ||
2278 | return len - len1; | |
2279 | } | |
2280 | ||
2281 | static void win_stdio_wait_func(void *opaque) | |
2282 | { | |
2283 | CharDriverState *chr = opaque; | |
2284 | WinStdioCharState *stdio = chr->opaque; | |
2285 | INPUT_RECORD buf[4]; | |
2286 | int ret; | |
2287 | DWORD dwSize; | |
2288 | int i; | |
2289 | ||
2290 | ret = ReadConsoleInput(stdio->hStdIn, buf, ARRAY_SIZE(buf), &dwSize); | |
2291 | ||
2292 | if (!ret) { | |
2293 | /* Avoid error storm */ | |
2294 | qemu_del_wait_object(stdio->hStdIn, NULL, NULL); | |
2295 | return; | |
2296 | } | |
2297 | ||
2298 | for (i = 0; i < dwSize; i++) { | |
2299 | KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent; | |
2300 | ||
2301 | if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) { | |
2302 | int j; | |
2303 | if (kev->uChar.AsciiChar != 0) { | |
2304 | for (j = 0; j < kev->wRepeatCount; j++) { | |
2305 | if (qemu_chr_be_can_write(chr)) { | |
2306 | uint8_t c = kev->uChar.AsciiChar; | |
2307 | qemu_chr_be_write(chr, &c, 1); | |
2308 | } | |
2309 | } | |
2310 | } | |
2311 | } | |
2312 | } | |
2313 | } | |
2314 | ||
2315 | static DWORD WINAPI win_stdio_thread(LPVOID param) | |
2316 | { | |
2317 | CharDriverState *chr = param; | |
2318 | WinStdioCharState *stdio = chr->opaque; | |
2319 | int ret; | |
2320 | DWORD dwSize; | |
2321 | ||
2322 | while (1) { | |
2323 | ||
2324 | /* Wait for one byte */ | |
2325 | ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL); | |
2326 | ||
2327 | /* Exit in case of error, continue if nothing read */ | |
2328 | if (!ret) { | |
2329 | break; | |
2330 | } | |
2331 | if (!dwSize) { | |
2332 | continue; | |
2333 | } | |
2334 | ||
2335 | /* Some terminal emulator returns \r\n for Enter, just pass \n */ | |
2336 | if (stdio->win_stdio_buf == '\r') { | |
2337 | continue; | |
2338 | } | |
2339 | ||
2340 | /* Signal the main thread and wait until the byte was eaten */ | |
2341 | if (!SetEvent(stdio->hInputReadyEvent)) { | |
2342 | break; | |
2343 | } | |
2344 | if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE) | |
2345 | != WAIT_OBJECT_0) { | |
2346 | break; | |
2347 | } | |
2348 | } | |
2349 | ||
2350 | qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL); | |
2351 | return 0; | |
2352 | } | |
2353 | ||
2354 | static void win_stdio_thread_wait_func(void *opaque) | |
2355 | { | |
2356 | CharDriverState *chr = opaque; | |
2357 | WinStdioCharState *stdio = chr->opaque; | |
2358 | ||
2359 | if (qemu_chr_be_can_write(chr)) { | |
2360 | qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1); | |
2361 | } | |
2362 | ||
2363 | SetEvent(stdio->hInputDoneEvent); | |
2364 | } | |
2365 | ||
2366 | static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo) | |
2367 | { | |
2368 | WinStdioCharState *stdio = chr->opaque; | |
2369 | DWORD dwMode = 0; | |
2370 | ||
2371 | GetConsoleMode(stdio->hStdIn, &dwMode); | |
2372 | ||
2373 | if (echo) { | |
2374 | SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT); | |
2375 | } else { | |
2376 | SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT); | |
2377 | } | |
2378 | } | |
2379 | ||
2380 | static void win_stdio_close(CharDriverState *chr) | |
2381 | { | |
2382 | WinStdioCharState *stdio = chr->opaque; | |
2383 | ||
2384 | if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) { | |
2385 | CloseHandle(stdio->hInputReadyEvent); | |
2386 | } | |
2387 | if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) { | |
2388 | CloseHandle(stdio->hInputDoneEvent); | |
2389 | } | |
2390 | if (stdio->hInputThread != INVALID_HANDLE_VALUE) { | |
2391 | TerminateThread(stdio->hInputThread, 0); | |
2392 | } | |
2393 | ||
2394 | g_free(chr->opaque); | |
2395 | g_free(chr); | |
2396 | } | |
2397 | ||
2398 | static CharDriverState *qemu_chr_open_stdio(const char *id, | |
2399 | ChardevBackend *backend, | |
2400 | ChardevReturn *ret, | |
2401 | Error **errp) | |
2402 | { | |
2403 | CharDriverState *chr; | |
2404 | WinStdioCharState *stdio; | |
2405 | DWORD dwMode; | |
2406 | int is_console = 0; | |
2407 | ChardevCommon *common = qapi_ChardevStdio_base(backend->u.stdio.data); | |
2408 | ||
2409 | chr = qemu_chr_alloc(common, errp); | |
2410 | if (!chr) { | |
2411 | return NULL; | |
2412 | } | |
2413 | stdio = g_new0(WinStdioCharState, 1); | |
2414 | ||
2415 | stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE); | |
2416 | if (stdio->hStdIn == INVALID_HANDLE_VALUE) { | |
2417 | error_setg(errp, "cannot open stdio: invalid handle"); | |
2418 | return NULL; | |
2419 | } | |
2420 | ||
2421 | is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0; | |
2422 | ||
2423 | chr->opaque = stdio; | |
2424 | chr->chr_write = win_stdio_write; | |
2425 | chr->chr_close = win_stdio_close; | |
2426 | ||
2427 | if (is_console) { | |
2428 | if (qemu_add_wait_object(stdio->hStdIn, | |
2429 | win_stdio_wait_func, chr)) { | |
2430 | error_setg(errp, "qemu_add_wait_object: failed"); | |
2431 | goto err1; | |
2432 | } | |
2433 | } else { | |
2434 | DWORD dwId; | |
2435 | ||
2436 | stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL); | |
2437 | stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL); | |
2438 | if (stdio->hInputReadyEvent == INVALID_HANDLE_VALUE | |
2439 | || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) { | |
2440 | error_setg(errp, "cannot create event"); | |
2441 | goto err2; | |
2442 | } | |
2443 | if (qemu_add_wait_object(stdio->hInputReadyEvent, | |
2444 | win_stdio_thread_wait_func, chr)) { | |
2445 | error_setg(errp, "qemu_add_wait_object: failed"); | |
2446 | goto err2; | |
2447 | } | |
2448 | stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread, | |
2449 | chr, 0, &dwId); | |
2450 | ||
2451 | if (stdio->hInputThread == INVALID_HANDLE_VALUE) { | |
2452 | error_setg(errp, "cannot create stdio thread"); | |
2453 | goto err3; | |
2454 | } | |
2455 | } | |
2456 | ||
2457 | dwMode |= ENABLE_LINE_INPUT; | |
2458 | ||
2459 | if (is_console) { | |
2460 | /* set the terminal in raw mode */ | |
2461 | /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */ | |
2462 | dwMode |= ENABLE_PROCESSED_INPUT; | |
2463 | } | |
2464 | ||
2465 | SetConsoleMode(stdio->hStdIn, dwMode); | |
2466 | ||
2467 | chr->chr_set_echo = qemu_chr_set_echo_win_stdio; | |
2468 | qemu_chr_fe_set_echo(chr, false); | |
2469 | ||
2470 | return chr; | |
2471 | ||
2472 | err3: | |
2473 | qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL); | |
2474 | err2: | |
2475 | CloseHandle(stdio->hInputReadyEvent); | |
2476 | CloseHandle(stdio->hInputDoneEvent); | |
2477 | err1: | |
2478 | qemu_del_wait_object(stdio->hStdIn, NULL, NULL); | |
2479 | return NULL; | |
2480 | } | |
2481 | #endif /* !_WIN32 */ | |
2482 | ||
2483 | ||
2484 | /***********************************************************/ | |
2485 | /* UDP Net console */ | |
2486 | ||
2487 | typedef struct { | |
2488 | QIOChannel *ioc; | |
2489 | uint8_t buf[READ_BUF_LEN]; | |
2490 | int bufcnt; | |
2491 | int bufptr; | |
2492 | int max_size; | |
2493 | } NetCharDriver; | |
2494 | ||
2495 | /* Called with chr_write_lock held. */ | |
2496 | static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len) | |
2497 | { | |
2498 | NetCharDriver *s = chr->opaque; | |
2499 | ||
2500 | return qio_channel_write( | |
2501 | s->ioc, (const char *)buf, len, NULL); | |
2502 | } | |
2503 | ||
2504 | static int udp_chr_read_poll(void *opaque) | |
2505 | { | |
2506 | CharDriverState *chr = opaque; | |
2507 | NetCharDriver *s = chr->opaque; | |
2508 | ||
2509 | s->max_size = qemu_chr_be_can_write(chr); | |
2510 | ||
2511 | /* If there were any stray characters in the queue process them | |
2512 | * first | |
2513 | */ | |
2514 | while (s->max_size > 0 && s->bufptr < s->bufcnt) { | |
2515 | qemu_chr_be_write(chr, &s->buf[s->bufptr], 1); | |
2516 | s->bufptr++; | |
2517 | s->max_size = qemu_chr_be_can_write(chr); | |
2518 | } | |
2519 | return s->max_size; | |
2520 | } | |
2521 | ||
2522 | static gboolean udp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque) | |
2523 | { | |
2524 | CharDriverState *chr = opaque; | |
2525 | NetCharDriver *s = chr->opaque; | |
2526 | ssize_t ret; | |
2527 | ||
2528 | if (s->max_size == 0) { | |
2529 | return TRUE; | |
2530 | } | |
2531 | ret = qio_channel_read( | |
2532 | s->ioc, (char *)s->buf, sizeof(s->buf), NULL); | |
2533 | if (ret <= 0) { | |
2534 | remove_fd_in_watch(chr); | |
2535 | return FALSE; | |
2536 | } | |
2537 | s->bufcnt = ret; | |
2538 | ||
2539 | s->bufptr = 0; | |
2540 | while (s->max_size > 0 && s->bufptr < s->bufcnt) { | |
2541 | qemu_chr_be_write(chr, &s->buf[s->bufptr], 1); | |
2542 | s->bufptr++; | |
2543 | s->max_size = qemu_chr_be_can_write(chr); | |
2544 | } | |
2545 | ||
2546 | return TRUE; | |
2547 | } | |
2548 | ||
2549 | static void udp_chr_update_read_handler(CharDriverState *chr) | |
2550 | { | |
2551 | NetCharDriver *s = chr->opaque; | |
2552 | ||
2553 | remove_fd_in_watch(chr); | |
2554 | if (s->ioc) { | |
2555 | chr->fd_in_tag = io_add_watch_poll(s->ioc, | |
2556 | udp_chr_read_poll, | |
2557 | udp_chr_read, chr); | |
2558 | } | |
2559 | } | |
2560 | ||
2561 | static void udp_chr_close(CharDriverState *chr) | |
2562 | { | |
2563 | NetCharDriver *s = chr->opaque; | |
2564 | ||
2565 | remove_fd_in_watch(chr); | |
2566 | if (s->ioc) { | |
2567 | object_unref(OBJECT(s->ioc)); | |
2568 | } | |
2569 | g_free(s); | |
2570 | qemu_chr_be_event(chr, CHR_EVENT_CLOSED); | |
2571 | } | |
2572 | ||
2573 | static CharDriverState *qemu_chr_open_udp(QIOChannelSocket *sioc, | |
2574 | ChardevCommon *backend, | |
2575 | Error **errp) | |
2576 | { | |
2577 | CharDriverState *chr = NULL; | |
2578 | NetCharDriver *s = NULL; | |
2579 | ||
2580 | chr = qemu_chr_alloc(backend, errp); | |
2581 | if (!chr) { | |
2582 | return NULL; | |
2583 | } | |
2584 | s = g_new0(NetCharDriver, 1); | |
2585 | ||
2586 | s->ioc = QIO_CHANNEL(sioc); | |
2587 | s->bufcnt = 0; | |
2588 | s->bufptr = 0; | |
2589 | chr->opaque = s; | |
2590 | chr->chr_write = udp_chr_write; | |
2591 | chr->chr_update_read_handler = udp_chr_update_read_handler; | |
2592 | chr->chr_close = udp_chr_close; | |
2593 | /* be isn't opened until we get a connection */ | |
2594 | chr->explicit_be_open = true; | |
2595 | return chr; | |
2596 | } | |
2597 | ||
2598 | /***********************************************************/ | |
2599 | /* TCP Net console */ | |
2600 | ||
2601 | typedef struct { | |
2602 | QIOChannel *ioc; /* Client I/O channel */ | |
2603 | QIOChannelSocket *sioc; /* Client master channel */ | |
2604 | QIOChannelSocket *listen_ioc; | |
2605 | guint listen_tag; | |
2606 | QCryptoTLSCreds *tls_creds; | |
2607 | int connected; | |
2608 | int max_size; | |
2609 | int do_telnetopt; | |
2610 | int do_nodelay; | |
2611 | int is_unix; | |
2612 | int *read_msgfds; | |
2613 | size_t read_msgfds_num; | |
2614 | int *write_msgfds; | |
2615 | size_t write_msgfds_num; | |
2616 | ||
2617 | SocketAddress *addr; | |
2618 | bool is_listen; | |
2619 | bool is_telnet; | |
2620 | ||
2621 | guint reconnect_timer; | |
2622 | int64_t reconnect_time; | |
2623 | bool connect_err_reported; | |
2624 | } TCPCharDriver; | |
2625 | ||
2626 | static gboolean socket_reconnect_timeout(gpointer opaque); | |
2627 | ||
2628 | static void qemu_chr_socket_restart_timer(CharDriverState *chr) | |
2629 | { | |
2630 | TCPCharDriver *s = chr->opaque; | |
2631 | assert(s->connected == 0); | |
2632 | s->reconnect_timer = g_timeout_add_seconds(s->reconnect_time, | |
2633 | socket_reconnect_timeout, chr); | |
2634 | } | |
2635 | ||
2636 | static void check_report_connect_error(CharDriverState *chr, | |
2637 | Error *err) | |
2638 | { | |
2639 | TCPCharDriver *s = chr->opaque; | |
2640 | ||
2641 | if (!s->connect_err_reported) { | |
2642 | error_report("Unable to connect character device %s: %s", | |
2643 | chr->label, error_get_pretty(err)); | |
2644 | s->connect_err_reported = true; | |
2645 | } | |
2646 | qemu_chr_socket_restart_timer(chr); | |
2647 | } | |
2648 | ||
2649 | static gboolean tcp_chr_accept(QIOChannel *chan, | |
2650 | GIOCondition cond, | |
2651 | void *opaque); | |
2652 | ||
2653 | /* Called with chr_write_lock held. */ | |
2654 | static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len) | |
2655 | { | |
2656 | TCPCharDriver *s = chr->opaque; | |
2657 | if (s->connected) { | |
2658 | int ret = io_channel_send_full(s->ioc, buf, len, | |
2659 | s->write_msgfds, | |
2660 | s->write_msgfds_num); | |
2661 | ||
2662 | /* free the written msgfds, no matter what */ | |
2663 | if (s->write_msgfds_num) { | |
2664 | g_free(s->write_msgfds); | |
2665 | s->write_msgfds = 0; | |
2666 | s->write_msgfds_num = 0; | |
2667 | } | |
2668 | ||
2669 | return ret; | |
2670 | } else { | |
2671 | /* XXX: indicate an error ? */ | |
2672 | return len; | |
2673 | } | |
2674 | } | |
2675 | ||
2676 | static int tcp_chr_read_poll(void *opaque) | |
2677 | { | |
2678 | CharDriverState *chr = opaque; | |
2679 | TCPCharDriver *s = chr->opaque; | |
2680 | if (!s->connected) | |
2681 | return 0; | |
2682 | s->max_size = qemu_chr_be_can_write(chr); | |
2683 | return s->max_size; | |
2684 | } | |
2685 | ||
2686 | #define IAC 255 | |
2687 | #define IAC_BREAK 243 | |
2688 | static void tcp_chr_process_IAC_bytes(CharDriverState *chr, | |
2689 | TCPCharDriver *s, | |
2690 | uint8_t *buf, int *size) | |
2691 | { | |
2692 | /* Handle any telnet client's basic IAC options to satisfy char by | |
2693 | * char mode with no echo. All IAC options will be removed from | |
2694 | * the buf and the do_telnetopt variable will be used to track the | |
2695 | * state of the width of the IAC information. | |
2696 | * | |
2697 | * IAC commands come in sets of 3 bytes with the exception of the | |
2698 | * "IAC BREAK" command and the double IAC. | |
2699 | */ | |
2700 | ||
2701 | int i; | |
2702 | int j = 0; | |
2703 | ||
2704 | for (i = 0; i < *size; i++) { | |
2705 | if (s->do_telnetopt > 1) { | |
2706 | if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) { | |
2707 | /* Double IAC means send an IAC */ | |
2708 | if (j != i) | |
2709 | buf[j] = buf[i]; | |
2710 | j++; | |
2711 | s->do_telnetopt = 1; | |
2712 | } else { | |
2713 | if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) { | |
2714 | /* Handle IAC break commands by sending a serial break */ | |
2715 | qemu_chr_be_event(chr, CHR_EVENT_BREAK); | |
2716 | s->do_telnetopt++; | |
2717 | } | |
2718 | s->do_telnetopt++; | |
2719 | } | |
2720 | if (s->do_telnetopt >= 4) { | |
2721 | s->do_telnetopt = 1; | |
2722 | } | |
2723 | } else { | |
2724 | if ((unsigned char)buf[i] == IAC) { | |
2725 | s->do_telnetopt = 2; | |
2726 | } else { | |
2727 | if (j != i) | |
2728 | buf[j] = buf[i]; | |
2729 | j++; | |
2730 | } | |
2731 | } | |
2732 | } | |
2733 | *size = j; | |
2734 | } | |
2735 | ||
2736 | static int tcp_get_msgfds(CharDriverState *chr, int *fds, int num) | |
2737 | { | |
2738 | TCPCharDriver *s = chr->opaque; | |
2739 | int to_copy = (s->read_msgfds_num < num) ? s->read_msgfds_num : num; | |
2740 | ||
2741 | assert(num <= TCP_MAX_FDS); | |
2742 | ||
2743 | if (to_copy) { | |
2744 | int i; | |
2745 | ||
2746 | memcpy(fds, s->read_msgfds, to_copy * sizeof(int)); | |
2747 | ||
2748 | /* Close unused fds */ | |
2749 | for (i = to_copy; i < s->read_msgfds_num; i++) { | |
2750 | close(s->read_msgfds[i]); | |
2751 | } | |
2752 | ||
2753 | g_free(s->read_msgfds); | |
2754 | s->read_msgfds = 0; | |
2755 | s->read_msgfds_num = 0; | |
2756 | } | |
2757 | ||
2758 | return to_copy; | |
2759 | } | |
2760 | ||
2761 | static int tcp_set_msgfds(CharDriverState *chr, int *fds, int num) | |
2762 | { | |
2763 | TCPCharDriver *s = chr->opaque; | |
2764 | ||
2765 | if (!qio_channel_has_feature(s->ioc, | |
2766 | QIO_CHANNEL_FEATURE_FD_PASS)) { | |
2767 | return -1; | |
2768 | } | |
2769 | /* clear old pending fd array */ | |
2770 | g_free(s->write_msgfds); | |
2771 | s->write_msgfds = NULL; | |
2772 | ||
2773 | if (num) { | |
2774 | s->write_msgfds = g_new(int, num); | |
2775 | memcpy(s->write_msgfds, fds, num * sizeof(int)); | |
2776 | } | |
2777 | ||
2778 | s->write_msgfds_num = num; | |
2779 | ||
2780 | return 0; | |
2781 | } | |
2782 | ||
2783 | static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len) | |
2784 | { | |
2785 | TCPCharDriver *s = chr->opaque; | |
2786 | struct iovec iov = { .iov_base = buf, .iov_len = len }; | |
2787 | int ret; | |
2788 | size_t i; | |
2789 | int *msgfds = NULL; | |
2790 | size_t msgfds_num = 0; | |
2791 | ||
2792 | if (qio_channel_has_feature(s->ioc, QIO_CHANNEL_FEATURE_FD_PASS)) { | |
2793 | ret = qio_channel_readv_full(s->ioc, &iov, 1, | |
2794 | &msgfds, &msgfds_num, | |
2795 | NULL); | |
2796 | } else { | |
2797 | ret = qio_channel_readv_full(s->ioc, &iov, 1, | |
2798 | NULL, NULL, | |
2799 | NULL); | |
2800 | } | |
2801 | ||
2802 | if (ret == QIO_CHANNEL_ERR_BLOCK) { | |
2803 | errno = EAGAIN; | |
2804 | ret = -1; | |
2805 | } else if (ret == -1) { | |
2806 | errno = EIO; | |
2807 | } | |
2808 | ||
2809 | if (msgfds_num) { | |
2810 | /* close and clean read_msgfds */ | |
2811 | for (i = 0; i < s->read_msgfds_num; i++) { | |
2812 | close(s->read_msgfds[i]); | |
2813 | } | |
2814 | ||
2815 | if (s->read_msgfds_num) { | |
2816 | g_free(s->read_msgfds); | |
2817 | } | |
2818 | ||
2819 | s->read_msgfds = msgfds; | |
2820 | s->read_msgfds_num = msgfds_num; | |
2821 | } | |
2822 | ||
2823 | for (i = 0; i < s->read_msgfds_num; i++) { | |
2824 | int fd = s->read_msgfds[i]; | |
2825 | if (fd < 0) { | |
2826 | continue; | |
2827 | } | |
2828 | ||
2829 | /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */ | |
2830 | qemu_set_block(fd); | |
2831 | ||
2832 | #ifndef MSG_CMSG_CLOEXEC | |
2833 | qemu_set_cloexec(fd); | |
2834 | #endif | |
2835 | } | |
2836 | ||
2837 | return ret; | |
2838 | } | |
2839 | ||
2840 | static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond) | |
2841 | { | |
2842 | TCPCharDriver *s = chr->opaque; | |
2843 | return qio_channel_create_watch(s->ioc, cond); | |
2844 | } | |
2845 | ||
2846 | static void tcp_chr_disconnect(CharDriverState *chr) | |
2847 | { | |
2848 | TCPCharDriver *s = chr->opaque; | |
2849 | ||
2850 | if (!s->connected) { | |
2851 | return; | |
2852 | } | |
2853 | ||
2854 | s->connected = 0; | |
2855 | if (s->listen_ioc) { | |
2856 | s->listen_tag = qio_channel_add_watch( | |
2857 | QIO_CHANNEL(s->listen_ioc), G_IO_IN, tcp_chr_accept, chr, NULL); | |
2858 | } | |
2859 | tcp_set_msgfds(chr, NULL, 0); | |
2860 | remove_fd_in_watch(chr); | |
2861 | object_unref(OBJECT(s->sioc)); | |
2862 | s->sioc = NULL; | |
2863 | object_unref(OBJECT(s->ioc)); | |
2864 | s->ioc = NULL; | |
2865 | g_free(chr->filename); | |
2866 | chr->filename = SocketAddress_to_str("disconnected:", s->addr, | |
2867 | s->is_listen, s->is_telnet); | |
2868 | qemu_chr_be_event(chr, CHR_EVENT_CLOSED); | |
2869 | if (s->reconnect_time) { | |
2870 | qemu_chr_socket_restart_timer(chr); | |
2871 | } | |
2872 | } | |
2873 | ||
2874 | static gboolean tcp_chr_read(QIOChannel *chan, GIOCondition cond, void *opaque) | |
2875 | { | |
2876 | CharDriverState *chr = opaque; | |
2877 | TCPCharDriver *s = chr->opaque; | |
2878 | uint8_t buf[READ_BUF_LEN]; | |
2879 | int len, size; | |
2880 | ||
2881 | if (!s->connected || s->max_size <= 0) { | |
2882 | return TRUE; | |
2883 | } | |
2884 | len = sizeof(buf); | |
2885 | if (len > s->max_size) | |
2886 | len = s->max_size; | |
2887 | size = tcp_chr_recv(chr, (void *)buf, len); | |
2888 | if (size == 0 || size == -1) { | |
2889 | /* connection closed */ | |
2890 | tcp_chr_disconnect(chr); | |
2891 | } else if (size > 0) { | |
2892 | if (s->do_telnetopt) | |
2893 | tcp_chr_process_IAC_bytes(chr, s, buf, &size); | |
2894 | if (size > 0) | |
2895 | qemu_chr_be_write(chr, buf, size); | |
2896 | } | |
2897 | ||
2898 | return TRUE; | |
2899 | } | |
2900 | ||
2901 | static int tcp_chr_sync_read(CharDriverState *chr, const uint8_t *buf, int len) | |
2902 | { | |
2903 | TCPCharDriver *s = chr->opaque; | |
2904 | int size; | |
2905 | ||
2906 | if (!s->connected) { | |
2907 | return 0; | |
2908 | } | |
2909 | ||
2910 | size = tcp_chr_recv(chr, (void *) buf, len); | |
2911 | if (size == 0) { | |
2912 | /* connection closed */ | |
2913 | tcp_chr_disconnect(chr); | |
2914 | } | |
2915 | ||
2916 | return size; | |
2917 | } | |
2918 | ||
2919 | static void tcp_chr_connect(void *opaque) | |
2920 | { | |
2921 | CharDriverState *chr = opaque; | |
2922 | TCPCharDriver *s = chr->opaque; | |
2923 | ||
2924 | g_free(chr->filename); | |
2925 | chr->filename = sockaddr_to_str( | |
2926 | &s->sioc->localAddr, s->sioc->localAddrLen, | |
2927 | &s->sioc->remoteAddr, s->sioc->remoteAddrLen, | |
2928 | s->is_listen, s->is_telnet); | |
2929 | ||
2930 | s->connected = 1; | |
2931 | if (s->ioc) { | |
2932 | chr->fd_in_tag = io_add_watch_poll(s->ioc, | |
2933 | tcp_chr_read_poll, | |
2934 | tcp_chr_read, chr); | |
2935 | } | |
2936 | qemu_chr_be_generic_open(chr); | |
2937 | } | |
2938 | ||
2939 | static void tcp_chr_update_read_handler(CharDriverState *chr) | |
2940 | { | |
2941 | TCPCharDriver *s = chr->opaque; | |
2942 | ||
2943 | if (!s->connected) { | |
2944 | return; | |
2945 | } | |
2946 | ||
2947 | remove_fd_in_watch(chr); | |
2948 | if (s->ioc) { | |
2949 | chr->fd_in_tag = io_add_watch_poll(s->ioc, | |
2950 | tcp_chr_read_poll, | |
2951 | tcp_chr_read, chr); | |
2952 | } | |
2953 | } | |
2954 | ||
2955 | typedef struct { | |
2956 | CharDriverState *chr; | |
2957 | char buf[12]; | |
2958 | size_t buflen; | |
2959 | } TCPCharDriverTelnetInit; | |
2960 | ||
2961 | static gboolean tcp_chr_telnet_init_io(QIOChannel *ioc, | |
2962 | GIOCondition cond G_GNUC_UNUSED, | |
2963 | gpointer user_data) | |
2964 | { | |
2965 | TCPCharDriverTelnetInit *init = user_data; | |
2966 | ssize_t ret; | |
2967 | ||
2968 | ret = qio_channel_write(ioc, init->buf, init->buflen, NULL); | |
2969 | if (ret < 0) { | |
2970 | if (ret == QIO_CHANNEL_ERR_BLOCK) { | |
2971 | ret = 0; | |
2972 | } else { | |
2973 | tcp_chr_disconnect(init->chr); | |
2974 | return FALSE; | |
2975 | } | |
2976 | } | |
2977 | init->buflen -= ret; | |
2978 | ||
2979 | if (init->buflen == 0) { | |
2980 | tcp_chr_connect(init->chr); | |
2981 | return FALSE; | |
2982 | } | |
2983 | ||
2984 | memmove(init->buf, init->buf + ret, init->buflen); | |
2985 | ||
2986 | return TRUE; | |
2987 | } | |
2988 | ||
2989 | static void tcp_chr_telnet_init(CharDriverState *chr) | |
2990 | { | |
2991 | TCPCharDriver *s = chr->opaque; | |
2992 | TCPCharDriverTelnetInit *init = | |
2993 | g_new0(TCPCharDriverTelnetInit, 1); | |
2994 | size_t n = 0; | |
2995 | ||
2996 | init->chr = chr; | |
2997 | init->buflen = 12; | |
2998 | ||
2999 | #define IACSET(x, a, b, c) \ | |
3000 | do { \ | |
3001 | x[n++] = a; \ | |
3002 | x[n++] = b; \ | |
3003 | x[n++] = c; \ | |
3004 | } while (0) | |
3005 | ||
3006 | /* Prep the telnet negotion to put telnet in binary, | |
3007 | * no echo, single char mode */ | |
3008 | IACSET(init->buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */ | |
3009 | IACSET(init->buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */ | |
3010 | IACSET(init->buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */ | |
3011 | IACSET(init->buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */ | |
3012 | ||
3013 | #undef IACSET | |
3014 | ||
3015 | qio_channel_add_watch( | |
3016 | s->ioc, G_IO_OUT, | |
3017 | tcp_chr_telnet_init_io, | |
3018 | init, NULL); | |
3019 | } | |
3020 | ||
3021 | ||
3022 | static void tcp_chr_tls_handshake(Object *source, | |
3023 | Error *err, | |
3024 | gpointer user_data) | |
3025 | { | |
3026 | CharDriverState *chr = user_data; | |
3027 | TCPCharDriver *s = chr->opaque; | |
3028 | ||
3029 | if (err) { | |
3030 | tcp_chr_disconnect(chr); | |
3031 | } else { | |
3032 | if (s->do_telnetopt) { | |
3033 | tcp_chr_telnet_init(chr); | |
3034 | } else { | |
3035 | tcp_chr_connect(chr); | |
3036 | } | |
3037 | } | |
3038 | } | |
3039 | ||
3040 | ||
3041 | static void tcp_chr_tls_init(CharDriverState *chr) | |
3042 | { | |
3043 | TCPCharDriver *s = chr->opaque; | |
3044 | QIOChannelTLS *tioc; | |
3045 | Error *err = NULL; | |
3046 | ||
3047 | if (s->is_listen) { | |
3048 | tioc = qio_channel_tls_new_server( | |
3049 | s->ioc, s->tls_creds, | |
3050 | NULL, /* XXX Use an ACL */ | |
3051 | &err); | |
3052 | } else { | |
3053 | tioc = qio_channel_tls_new_client( | |
3054 | s->ioc, s->tls_creds, | |
3055 | s->addr->u.inet.data->host, | |
3056 | &err); | |
3057 | } | |
3058 | if (tioc == NULL) { | |
3059 | error_free(err); | |
3060 | tcp_chr_disconnect(chr); | |
3061 | } | |
3062 | object_unref(OBJECT(s->ioc)); | |
3063 | s->ioc = QIO_CHANNEL(tioc); | |
3064 | ||
3065 | qio_channel_tls_handshake(tioc, | |
3066 | tcp_chr_tls_handshake, | |
3067 | chr, | |
3068 | NULL); | |
3069 | } | |
3070 | ||
3071 | ||
3072 | static int tcp_chr_new_client(CharDriverState *chr, QIOChannelSocket *sioc) | |
3073 | { | |
3074 | TCPCharDriver *s = chr->opaque; | |
3075 | if (s->ioc != NULL) { | |
3076 | return -1; | |
3077 | } | |
3078 | ||
3079 | s->ioc = QIO_CHANNEL(sioc); | |
3080 | object_ref(OBJECT(sioc)); | |
3081 | s->sioc = sioc; | |
3082 | object_ref(OBJECT(sioc)); | |
3083 | ||
3084 | qio_channel_set_blocking(s->ioc, false, NULL); | |
3085 | ||
3086 | if (s->do_nodelay) { | |
3087 | qio_channel_set_delay(s->ioc, false); | |
3088 | } | |
3089 | if (s->listen_tag) { | |
3090 | g_source_remove(s->listen_tag); | |
3091 | s->listen_tag = 0; | |
3092 | } | |
3093 | ||
3094 | if (s->tls_creds) { | |
3095 | tcp_chr_tls_init(chr); | |
3096 | } else { | |
3097 | if (s->do_telnetopt) { | |
3098 | tcp_chr_telnet_init(chr); | |
3099 | } else { | |
3100 | tcp_chr_connect(chr); | |
3101 | } | |
3102 | } | |
3103 | ||
3104 | return 0; | |
3105 | } | |
3106 | ||
3107 | ||
3108 | static int tcp_chr_add_client(CharDriverState *chr, int fd) | |
3109 | { | |
3110 | int ret; | |
3111 | QIOChannelSocket *sioc; | |
3112 | ||
3113 | sioc = qio_channel_socket_new_fd(fd, NULL); | |
3114 | if (!sioc) { | |
3115 | return -1; | |
3116 | } | |
3117 | ret = tcp_chr_new_client(chr, sioc); | |
3118 | object_unref(OBJECT(sioc)); | |
3119 | return ret; | |
3120 | } | |
3121 | ||
3122 | static gboolean tcp_chr_accept(QIOChannel *channel, | |
3123 | GIOCondition cond, | |
3124 | void *opaque) | |
3125 | { | |
3126 | CharDriverState *chr = opaque; | |
3127 | QIOChannelSocket *sioc; | |
3128 | ||
3129 | sioc = qio_channel_socket_accept(QIO_CHANNEL_SOCKET(channel), | |
3130 | NULL); | |
3131 | if (!sioc) { | |
3132 | return TRUE; | |
3133 | } | |
3134 | ||
3135 | tcp_chr_new_client(chr, sioc); | |
3136 | ||
3137 | object_unref(OBJECT(sioc)); | |
3138 | ||
3139 | return TRUE; | |
3140 | } | |
3141 | ||
3142 | static void tcp_chr_close(CharDriverState *chr) | |
3143 | { | |
3144 | TCPCharDriver *s = chr->opaque; | |
3145 | int i; | |
3146 | ||
3147 | if (s->reconnect_timer) { | |
3148 | g_source_remove(s->reconnect_timer); | |
3149 | s->reconnect_timer = 0; | |
3150 | } | |
3151 | qapi_free_SocketAddress(s->addr); | |
3152 | remove_fd_in_watch(chr); | |
3153 | if (s->ioc) { | |
3154 | object_unref(OBJECT(s->ioc)); | |
3155 | } | |
3156 | if (s->listen_tag) { | |
3157 | g_source_remove(s->listen_tag); | |
3158 | s->listen_tag = 0; | |
3159 | } | |
3160 | if (s->listen_ioc) { | |
3161 | object_unref(OBJECT(s->listen_ioc)); | |
3162 | } | |
3163 | if (s->read_msgfds_num) { | |
3164 | for (i = 0; i < s->read_msgfds_num; i++) { | |
3165 | close(s->read_msgfds[i]); | |
3166 | } | |
3167 | g_free(s->read_msgfds); | |
3168 | } | |
3169 | if (s->tls_creds) { | |
3170 | object_unref(OBJECT(s->tls_creds)); | |
3171 | } | |
3172 | if (s->write_msgfds_num) { | |
3173 | g_free(s->write_msgfds); | |
3174 | } | |
3175 | g_free(s); | |
3176 | qemu_chr_be_event(chr, CHR_EVENT_CLOSED); | |
3177 | } | |
3178 | ||
3179 | ||
3180 | static void qemu_chr_socket_connected(Object *src, Error *err, void *opaque) | |
3181 | { | |
3182 | QIOChannelSocket *sioc = QIO_CHANNEL_SOCKET(src); | |
3183 | CharDriverState *chr = opaque; | |
3184 | TCPCharDriver *s = chr->opaque; | |
3185 | ||
3186 | if (err) { | |
3187 | check_report_connect_error(chr, err); | |
3188 | object_unref(src); | |
3189 | return; | |
3190 | } | |
3191 | ||
3192 | s->connect_err_reported = false; | |
3193 | tcp_chr_new_client(chr, sioc); | |
3194 | object_unref(OBJECT(sioc)); | |
3195 | } | |
3196 | ||
3197 | ||
3198 | /*********************************************************/ | |
3199 | /* Ring buffer chardev */ | |
3200 | ||
3201 | typedef struct { | |
3202 | size_t size; | |
3203 | size_t prod; | |
3204 | size_t cons; | |
3205 | uint8_t *cbuf; | |
3206 | } RingBufCharDriver; | |
3207 | ||
3208 | static size_t ringbuf_count(const CharDriverState *chr) | |
3209 | { | |
3210 | const RingBufCharDriver *d = chr->opaque; | |
3211 | ||
3212 | return d->prod - d->cons; | |
3213 | } | |
3214 | ||
3215 | /* Called with chr_write_lock held. */ | |
3216 | static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len) | |
3217 | { | |
3218 | RingBufCharDriver *d = chr->opaque; | |
3219 | int i; | |
3220 | ||
3221 | if (!buf || (len < 0)) { | |
3222 | return -1; | |
3223 | } | |
3224 | ||
3225 | for (i = 0; i < len; i++ ) { | |
3226 | d->cbuf[d->prod++ & (d->size - 1)] = buf[i]; | |
3227 | if (d->prod - d->cons > d->size) { | |
3228 | d->cons = d->prod - d->size; | |
3229 | } | |
3230 | } | |
3231 | ||
3232 | return 0; | |
3233 | } | |
3234 | ||
3235 | static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len) | |
3236 | { | |
3237 | RingBufCharDriver *d = chr->opaque; | |
3238 | int i; | |
3239 | ||
3240 | qemu_mutex_lock(&chr->chr_write_lock); | |
3241 | for (i = 0; i < len && d->cons != d->prod; i++) { | |
3242 | buf[i] = d->cbuf[d->cons++ & (d->size - 1)]; | |
3243 | } | |
3244 | qemu_mutex_unlock(&chr->chr_write_lock); | |
3245 | ||
3246 | return i; | |
3247 | } | |
3248 | ||
3249 | static void ringbuf_chr_close(struct CharDriverState *chr) | |
3250 | { | |
3251 | RingBufCharDriver *d = chr->opaque; | |
3252 | ||
3253 | g_free(d->cbuf); | |
3254 | g_free(d); | |
3255 | chr->opaque = NULL; | |
3256 | } | |
3257 | ||
3258 | static CharDriverState *qemu_chr_open_ringbuf(const char *id, | |
3259 | ChardevBackend *backend, | |
3260 | ChardevReturn *ret, | |
3261 | Error **errp) | |
3262 | { | |
3263 | ChardevRingbuf *opts = backend->u.ringbuf.data; | |
3264 | ChardevCommon *common = qapi_ChardevRingbuf_base(opts); | |
3265 | CharDriverState *chr; | |
3266 | RingBufCharDriver *d; | |
3267 | ||
3268 | chr = qemu_chr_alloc(common, errp); | |
3269 | if (!chr) { | |
3270 | return NULL; | |
3271 | } | |
3272 | d = g_malloc(sizeof(*d)); | |
3273 | ||
3274 | d->size = opts->has_size ? opts->size : 65536; | |
3275 | ||
3276 | /* The size must be power of 2 */ | |
3277 | if (d->size & (d->size - 1)) { | |
3278 | error_setg(errp, "size of ringbuf chardev must be power of two"); | |
3279 | goto fail; | |
3280 | } | |
3281 | ||
3282 | d->prod = 0; | |
3283 | d->cons = 0; | |
3284 | d->cbuf = g_malloc0(d->size); | |
3285 | ||
3286 | chr->opaque = d; | |
3287 | chr->chr_write = ringbuf_chr_write; | |
3288 | chr->chr_close = ringbuf_chr_close; | |
3289 | ||
3290 | return chr; | |
3291 | ||
3292 | fail: | |
3293 | g_free(d); | |
3294 | qemu_chr_free_common(chr); | |
3295 | return NULL; | |
3296 | } | |
3297 | ||
3298 | bool chr_is_ringbuf(const CharDriverState *chr) | |
3299 | { | |
3300 | return chr->chr_write == ringbuf_chr_write; | |
3301 | } | |
3302 | ||
3303 | void qmp_ringbuf_write(const char *device, const char *data, | |
3304 | bool has_format, enum DataFormat format, | |
3305 | Error **errp) | |
3306 | { | |
3307 | CharDriverState *chr; | |
3308 | const uint8_t *write_data; | |
3309 | int ret; | |
3310 | gsize write_count; | |
3311 | ||
3312 | chr = qemu_chr_find(device); | |
3313 | if (!chr) { | |
3314 | error_setg(errp, "Device '%s' not found", device); | |
3315 | return; | |
3316 | } | |
3317 | ||
3318 | if (!chr_is_ringbuf(chr)) { | |
3319 | error_setg(errp,"%s is not a ringbuf device", device); | |
3320 | return; | |
3321 | } | |
3322 | ||
3323 | if (has_format && (format == DATA_FORMAT_BASE64)) { | |
3324 | write_data = qbase64_decode(data, -1, | |
3325 | &write_count, | |
3326 | errp); | |
3327 | if (!write_data) { | |
3328 | return; | |
3329 | } | |
3330 | } else { | |
3331 | write_data = (uint8_t *)data; | |
3332 | write_count = strlen(data); | |
3333 | } | |
3334 | ||
3335 | ret = ringbuf_chr_write(chr, write_data, write_count); | |
3336 | ||
3337 | if (write_data != (uint8_t *)data) { | |
3338 | g_free((void *)write_data); | |
3339 | } | |
3340 | ||
3341 | if (ret < 0) { | |
3342 | error_setg(errp, "Failed to write to device %s", device); | |
3343 | return; | |
3344 | } | |
3345 | } | |
3346 | ||
3347 | char *qmp_ringbuf_read(const char *device, int64_t size, | |
3348 | bool has_format, enum DataFormat format, | |
3349 | Error **errp) | |
3350 | { | |
3351 | CharDriverState *chr; | |
3352 | uint8_t *read_data; | |
3353 | size_t count; | |
3354 | char *data; | |
3355 | ||
3356 | chr = qemu_chr_find(device); | |
3357 | if (!chr) { | |
3358 | error_setg(errp, "Device '%s' not found", device); | |
3359 | return NULL; | |
3360 | } | |
3361 | ||
3362 | if (!chr_is_ringbuf(chr)) { | |
3363 | error_setg(errp,"%s is not a ringbuf device", device); | |
3364 | return NULL; | |
3365 | } | |
3366 | ||
3367 | if (size <= 0) { | |
3368 | error_setg(errp, "size must be greater than zero"); | |
3369 | return NULL; | |
3370 | } | |
3371 | ||
3372 | count = ringbuf_count(chr); | |
3373 | size = size > count ? count : size; | |
3374 | read_data = g_malloc(size + 1); | |
3375 | ||
3376 | ringbuf_chr_read(chr, read_data, size); | |
3377 | ||
3378 | if (has_format && (format == DATA_FORMAT_BASE64)) { | |
3379 | data = g_base64_encode(read_data, size); | |
3380 | g_free(read_data); | |
3381 | } else { | |
3382 | /* | |
3383 | * FIXME should read only complete, valid UTF-8 characters up | |
3384 | * to @size bytes. Invalid sequences should be replaced by a | |
3385 | * suitable replacement character. Except when (and only | |
3386 | * when) ring buffer lost characters since last read, initial | |
3387 | * continuation characters should be dropped. | |
3388 | */ | |
3389 | read_data[size] = 0; | |
3390 | data = (char *)read_data; | |
3391 | } | |
3392 | ||
3393 | return data; | |
3394 | } | |
3395 | ||
3396 | QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename) | |
3397 | { | |
3398 | char host[65], port[33], width[8], height[8]; | |
3399 | int pos; | |
3400 | const char *p; | |
3401 | QemuOpts *opts; | |
3402 | Error *local_err = NULL; | |
3403 | ||
3404 | opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err); | |
3405 | if (local_err) { | |
3406 | error_report_err(local_err); | |
3407 | return NULL; | |
3408 | } | |
3409 | ||
3410 | if (strstart(filename, "mon:", &p)) { | |
3411 | filename = p; | |
3412 | qemu_opt_set(opts, "mux", "on", &error_abort); | |
3413 | if (strcmp(filename, "stdio") == 0) { | |
3414 | /* Monitor is muxed to stdio: do not exit on Ctrl+C by default | |
3415 | * but pass it to the guest. Handle this only for compat syntax, | |
3416 | * for -chardev syntax we have special option for this. | |
3417 | * This is what -nographic did, redirecting+muxing serial+monitor | |
3418 | * to stdio causing Ctrl+C to be passed to guest. */ | |
3419 | qemu_opt_set(opts, "signal", "off", &error_abort); | |
3420 | } | |
3421 | } | |
3422 | ||
3423 | if (strcmp(filename, "null") == 0 || | |
3424 | strcmp(filename, "pty") == 0 || | |
3425 | strcmp(filename, "msmouse") == 0 || | |
3426 | strcmp(filename, "braille") == 0 || | |
3427 | strcmp(filename, "testdev") == 0 || | |
3428 | strcmp(filename, "stdio") == 0) { | |
3429 | qemu_opt_set(opts, "backend", filename, &error_abort); | |
3430 | return opts; | |
3431 | } | |
3432 | if (strstart(filename, "vc", &p)) { | |
3433 | qemu_opt_set(opts, "backend", "vc", &error_abort); | |
3434 | if (*p == ':') { | |
3435 | if (sscanf(p+1, "%7[0-9]x%7[0-9]", width, height) == 2) { | |
3436 | /* pixels */ | |
3437 | qemu_opt_set(opts, "width", width, &error_abort); | |
3438 | qemu_opt_set(opts, "height", height, &error_abort); | |
3439 | } else if (sscanf(p+1, "%7[0-9]Cx%7[0-9]C", width, height) == 2) { | |
3440 | /* chars */ | |
3441 | qemu_opt_set(opts, "cols", width, &error_abort); | |
3442 | qemu_opt_set(opts, "rows", height, &error_abort); | |
3443 | } else { | |
3444 | goto fail; | |
3445 | } | |
3446 | } | |
3447 | return opts; | |
3448 | } | |
3449 | if (strcmp(filename, "con:") == 0) { | |
3450 | qemu_opt_set(opts, "backend", "console", &error_abort); | |
3451 | return opts; | |
3452 | } | |
3453 | if (strstart(filename, "COM", NULL)) { | |
3454 | qemu_opt_set(opts, "backend", "serial", &error_abort); | |
3455 | qemu_opt_set(opts, "path", filename, &error_abort); | |
3456 | return opts; | |
3457 | } | |
3458 | if (strstart(filename, "file:", &p)) { | |
3459 | qemu_opt_set(opts, "backend", "file", &error_abort); | |
3460 | qemu_opt_set(opts, "path", p, &error_abort); | |
3461 | return opts; | |
3462 | } | |
3463 | if (strstart(filename, "pipe:", &p)) { | |
3464 | qemu_opt_set(opts, "backend", "pipe", &error_abort); | |
3465 | qemu_opt_set(opts, "path", p, &error_abort); | |
3466 | return opts; | |
3467 | } | |
3468 | if (strstart(filename, "tcp:", &p) || | |
3469 | strstart(filename, "telnet:", &p)) { | |
3470 | if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) { | |
3471 | host[0] = 0; | |
3472 | if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) | |
3473 | goto fail; | |
3474 | } | |
3475 | qemu_opt_set(opts, "backend", "socket", &error_abort); | |
3476 | qemu_opt_set(opts, "host", host, &error_abort); | |
3477 | qemu_opt_set(opts, "port", port, &error_abort); | |
3478 | if (p[pos] == ',') { | |
3479 | qemu_opts_do_parse(opts, p+pos+1, NULL, &local_err); | |
3480 | if (local_err) { | |
3481 | error_report_err(local_err); | |
3482 | goto fail; | |
3483 | } | |
3484 | } | |
3485 | if (strstart(filename, "telnet:", &p)) | |
3486 | qemu_opt_set(opts, "telnet", "on", &error_abort); | |
3487 | return opts; | |
3488 | } | |
3489 | if (strstart(filename, "udp:", &p)) { | |
3490 | qemu_opt_set(opts, "backend", "udp", &error_abort); | |
3491 | if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) { | |
3492 | host[0] = 0; | |
3493 | if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) { | |
3494 | goto fail; | |
3495 | } | |
3496 | } | |
3497 | qemu_opt_set(opts, "host", host, &error_abort); | |
3498 | qemu_opt_set(opts, "port", port, &error_abort); | |
3499 | if (p[pos] == '@') { | |
3500 | p += pos + 1; | |
3501 | if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) { | |
3502 | host[0] = 0; | |
3503 | if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) { | |
3504 | goto fail; | |
3505 | } | |
3506 | } | |
3507 | qemu_opt_set(opts, "localaddr", host, &error_abort); | |
3508 | qemu_opt_set(opts, "localport", port, &error_abort); | |
3509 | } | |
3510 | return opts; | |
3511 | } | |
3512 | if (strstart(filename, "unix:", &p)) { | |
3513 | qemu_opt_set(opts, "backend", "socket", &error_abort); | |
3514 | qemu_opts_do_parse(opts, p, "path", &local_err); | |
3515 | if (local_err) { | |
3516 | error_report_err(local_err); | |
3517 | goto fail; | |
3518 | } | |
3519 | return opts; | |
3520 | } | |
3521 | if (strstart(filename, "/dev/parport", NULL) || | |
3522 | strstart(filename, "/dev/ppi", NULL)) { | |
3523 | qemu_opt_set(opts, "backend", "parport", &error_abort); | |
3524 | qemu_opt_set(opts, "path", filename, &error_abort); | |
3525 | return opts; | |
3526 | } | |
3527 | if (strstart(filename, "/dev/", NULL)) { | |
3528 | qemu_opt_set(opts, "backend", "tty", &error_abort); | |
3529 | qemu_opt_set(opts, "path", filename, &error_abort); | |
3530 | return opts; | |
3531 | } | |
3532 | ||
3533 | fail: | |
3534 | qemu_opts_del(opts); | |
3535 | return NULL; | |
3536 | } | |
3537 | ||
3538 | void qemu_chr_parse_common(QemuOpts *opts, ChardevCommon *backend) | |
3539 | { | |
3540 | const char *logfile = qemu_opt_get(opts, "logfile"); | |
3541 | ||
3542 | backend->has_logfile = logfile != NULL; | |
3543 | backend->logfile = logfile ? g_strdup(logfile) : NULL; | |
3544 | ||
3545 | backend->has_logappend = true; | |
3546 | backend->logappend = qemu_opt_get_bool(opts, "logappend", false); | |
3547 | } | |
3548 | ||
3549 | ||
3550 | static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend, | |
3551 | Error **errp) | |
3552 | { | |
3553 | const char *path = qemu_opt_get(opts, "path"); | |
3554 | ChardevFile *file; | |
3555 | ||
3556 | if (path == NULL) { | |
3557 | error_setg(errp, "chardev: file: no filename given"); | |
3558 | return; | |
3559 | } | |
3560 | file = backend->u.file.data = g_new0(ChardevFile, 1); | |
3561 | qemu_chr_parse_common(opts, qapi_ChardevFile_base(file)); | |
3562 | file->out = g_strdup(path); | |
3563 | ||
3564 | file->has_append = true; | |
3565 | file->append = qemu_opt_get_bool(opts, "append", false); | |
3566 | } | |
3567 | ||
3568 | static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend, | |
3569 | Error **errp) | |
3570 | { | |
3571 | ChardevStdio *stdio; | |
3572 | ||
3573 | stdio = backend->u.stdio.data = g_new0(ChardevStdio, 1); | |
3574 | qemu_chr_parse_common(opts, qapi_ChardevStdio_base(stdio)); | |
3575 | stdio->has_signal = true; | |
3576 | stdio->signal = qemu_opt_get_bool(opts, "signal", true); | |
3577 | } | |
3578 | ||
3579 | #ifdef HAVE_CHARDEV_SERIAL | |
3580 | static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend, | |
3581 | Error **errp) | |
3582 | { | |
3583 | const char *device = qemu_opt_get(opts, "path"); | |
3584 | ChardevHostdev *serial; | |
3585 | ||
3586 | if (device == NULL) { | |
3587 | error_setg(errp, "chardev: serial/tty: no device path given"); | |
3588 | return; | |
3589 | } | |
3590 | serial = backend->u.serial.data = g_new0(ChardevHostdev, 1); | |
3591 | qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(serial)); | |
3592 | serial->device = g_strdup(device); | |
3593 | } | |
3594 | #endif | |
3595 | ||
3596 | #ifdef HAVE_CHARDEV_PARPORT | |
3597 | static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend, | |
3598 | Error **errp) | |
3599 | { | |
3600 | const char *device = qemu_opt_get(opts, "path"); | |
3601 | ChardevHostdev *parallel; | |
3602 | ||
3603 | if (device == NULL) { | |
3604 | error_setg(errp, "chardev: parallel: no device path given"); | |
3605 | return; | |
3606 | } | |
3607 | parallel = backend->u.parallel.data = g_new0(ChardevHostdev, 1); | |
3608 | qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(parallel)); | |
3609 | parallel->device = g_strdup(device); | |
3610 | } | |
3611 | #endif | |
3612 | ||
3613 | static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend, | |
3614 | Error **errp) | |
3615 | { | |
3616 | const char *device = qemu_opt_get(opts, "path"); | |
3617 | ChardevHostdev *dev; | |
3618 | ||
3619 | if (device == NULL) { | |
3620 | error_setg(errp, "chardev: pipe: no device path given"); | |
3621 | return; | |
3622 | } | |
3623 | dev = backend->u.pipe.data = g_new0(ChardevHostdev, 1); | |
3624 | qemu_chr_parse_common(opts, qapi_ChardevHostdev_base(dev)); | |
3625 | dev->device = g_strdup(device); | |
3626 | } | |
3627 | ||
3628 | static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend, | |
3629 | Error **errp) | |
3630 | { | |
3631 | int val; | |
3632 | ChardevRingbuf *ringbuf; | |
3633 | ||
3634 | ringbuf = backend->u.ringbuf.data = g_new0(ChardevRingbuf, 1); | |
3635 | qemu_chr_parse_common(opts, qapi_ChardevRingbuf_base(ringbuf)); | |
3636 | ||
3637 | val = qemu_opt_get_size(opts, "size", 0); | |
3638 | if (val != 0) { | |
3639 | ringbuf->has_size = true; | |
3640 | ringbuf->size = val; | |
3641 | } | |
3642 | } | |
3643 | ||
3644 | static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend, | |
3645 | Error **errp) | |
3646 | { | |
3647 | const char *chardev = qemu_opt_get(opts, "chardev"); | |
3648 | ChardevMux *mux; | |
3649 | ||
3650 | if (chardev == NULL) { | |
3651 | error_setg(errp, "chardev: mux: no chardev given"); | |
3652 | return; | |
3653 | } | |
3654 | mux = backend->u.mux.data = g_new0(ChardevMux, 1); | |
3655 | qemu_chr_parse_common(opts, qapi_ChardevMux_base(mux)); | |
3656 | mux->chardev = g_strdup(chardev); | |
3657 | } | |
3658 | ||
3659 | static void qemu_chr_parse_socket(QemuOpts *opts, ChardevBackend *backend, | |
3660 | Error **errp) | |
3661 | { | |
3662 | bool is_listen = qemu_opt_get_bool(opts, "server", false); | |
3663 | bool is_waitconnect = is_listen && qemu_opt_get_bool(opts, "wait", true); | |
3664 | bool is_telnet = qemu_opt_get_bool(opts, "telnet", false); | |
3665 | bool do_nodelay = !qemu_opt_get_bool(opts, "delay", true); | |
3666 | int64_t reconnect = qemu_opt_get_number(opts, "reconnect", 0); | |
3667 | const char *path = qemu_opt_get(opts, "path"); | |
3668 | const char *host = qemu_opt_get(opts, "host"); | |
3669 | const char *port = qemu_opt_get(opts, "port"); | |
3670 | const char *tls_creds = qemu_opt_get(opts, "tls-creds"); | |
3671 | SocketAddress *addr; | |
3672 | ChardevSocket *sock; | |
3673 | ||
3674 | if (!path) { | |
3675 | if (!host) { | |
3676 | error_setg(errp, "chardev: socket: no host given"); | |
3677 | return; | |
3678 | } | |
3679 | if (!port) { | |
3680 | error_setg(errp, "chardev: socket: no port given"); | |
3681 | return; | |
3682 | } | |
3683 | } else { | |
3684 | if (tls_creds) { | |
3685 | error_setg(errp, "TLS can only be used over TCP socket"); | |
3686 | return; | |
3687 | } | |
3688 | } | |
3689 | ||
3690 | sock = backend->u.socket.data = g_new0(ChardevSocket, 1); | |
3691 | qemu_chr_parse_common(opts, qapi_ChardevSocket_base(sock)); | |
3692 | ||
3693 | sock->has_nodelay = true; | |
3694 | sock->nodelay = do_nodelay; | |
3695 | sock->has_server = true; | |
3696 | sock->server = is_listen; | |
3697 | sock->has_telnet = true; | |
3698 | sock->telnet = is_telnet; | |
3699 | sock->has_wait = true; | |
3700 | sock->wait = is_waitconnect; | |
3701 | sock->has_reconnect = true; | |
3702 | sock->reconnect = reconnect; | |
3703 | sock->tls_creds = g_strdup(tls_creds); | |
3704 | ||
3705 | addr = g_new0(SocketAddress, 1); | |
3706 | if (path) { | |
3707 | UnixSocketAddress *q_unix; | |
3708 | addr->type = SOCKET_ADDRESS_KIND_UNIX; | |
3709 | q_unix = addr->u.q_unix.data = g_new0(UnixSocketAddress, 1); | |
3710 | q_unix->path = g_strdup(path); | |
3711 | } else { | |
3712 | addr->type = SOCKET_ADDRESS_KIND_INET; | |
3713 | addr->u.inet.data = g_new(InetSocketAddress, 1); | |
3714 | *addr->u.inet.data = (InetSocketAddress) { | |
3715 | .host = g_strdup(host), | |
3716 | .port = g_strdup(port), | |
3717 | .has_to = qemu_opt_get(opts, "to"), | |
3718 | .to = qemu_opt_get_number(opts, "to", 0), | |
3719 | .has_ipv4 = qemu_opt_get(opts, "ipv4"), | |
3720 | .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0), | |
3721 | .has_ipv6 = qemu_opt_get(opts, "ipv6"), | |
3722 | .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0), | |
3723 | }; | |
3724 | } | |
3725 | sock->addr = addr; | |
3726 | } | |
3727 | ||
3728 | static void qemu_chr_parse_udp(QemuOpts *opts, ChardevBackend *backend, | |
3729 | Error **errp) | |
3730 | { | |
3731 | const char *host = qemu_opt_get(opts, "host"); | |
3732 | const char *port = qemu_opt_get(opts, "port"); | |
3733 | const char *localaddr = qemu_opt_get(opts, "localaddr"); | |
3734 | const char *localport = qemu_opt_get(opts, "localport"); | |
3735 | bool has_local = false; | |
3736 | SocketAddress *addr; | |
3737 | ChardevUdp *udp; | |
3738 | ||
3739 | if (host == NULL || strlen(host) == 0) { | |
3740 | host = "localhost"; | |
3741 | } | |
3742 | if (port == NULL || strlen(port) == 0) { | |
3743 | error_setg(errp, "chardev: udp: remote port not specified"); | |
3744 | return; | |
3745 | } | |
3746 | if (localport == NULL || strlen(localport) == 0) { | |
3747 | localport = "0"; | |
3748 | } else { | |
3749 | has_local = true; | |
3750 | } | |
3751 | if (localaddr == NULL || strlen(localaddr) == 0) { | |
3752 | localaddr = ""; | |
3753 | } else { | |
3754 | has_local = true; | |
3755 | } | |
3756 | ||
3757 | udp = backend->u.udp.data = g_new0(ChardevUdp, 1); | |
3758 | qemu_chr_parse_common(opts, qapi_ChardevUdp_base(udp)); | |
3759 | ||
3760 | addr = g_new0(SocketAddress, 1); | |
3761 | addr->type = SOCKET_ADDRESS_KIND_INET; | |
3762 | addr->u.inet.data = g_new(InetSocketAddress, 1); | |
3763 | *addr->u.inet.data = (InetSocketAddress) { | |
3764 | .host = g_strdup(host), | |
3765 | .port = g_strdup(port), | |
3766 | .has_ipv4 = qemu_opt_get(opts, "ipv4"), | |
3767 | .ipv4 = qemu_opt_get_bool(opts, "ipv4", 0), | |
3768 | .has_ipv6 = qemu_opt_get(opts, "ipv6"), | |
3769 | .ipv6 = qemu_opt_get_bool(opts, "ipv6", 0), | |
3770 | }; | |
3771 | udp->remote = addr; | |
3772 | ||
3773 | if (has_local) { | |
3774 | udp->has_local = true; | |
3775 | addr = g_new0(SocketAddress, 1); | |
3776 | addr->type = SOCKET_ADDRESS_KIND_INET; | |
3777 | addr->u.inet.data = g_new(InetSocketAddress, 1); | |
3778 | *addr->u.inet.data = (InetSocketAddress) { | |
3779 | .host = g_strdup(localaddr), | |
3780 | .port = g_strdup(localport), | |
3781 | }; | |
3782 | udp->local = addr; | |
3783 | } | |
3784 | } | |
3785 | ||
3786 | typedef struct CharDriver { | |
3787 | const char *name; | |
3788 | ChardevBackendKind kind; | |
3789 | void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp); | |
3790 | CharDriverState *(*create)(const char *id, ChardevBackend *backend, | |
3791 | ChardevReturn *ret, Error **errp); | |
3792 | } CharDriver; | |
3793 | ||
3794 | static GSList *backends; | |
3795 | ||
3796 | void register_char_driver(const char *name, ChardevBackendKind kind, | |
3797 | void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp), | |
3798 | CharDriverState *(*create)(const char *id, ChardevBackend *backend, | |
3799 | ChardevReturn *ret, Error **errp)) | |
3800 | { | |
3801 | CharDriver *s; | |
3802 | ||
3803 | s = g_malloc0(sizeof(*s)); | |
3804 | s->name = g_strdup(name); | |
3805 | s->kind = kind; | |
3806 | s->parse = parse; | |
3807 | s->create = create; | |
3808 | ||
3809 | backends = g_slist_append(backends, s); | |
3810 | } | |
3811 | ||
3812 | CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts, | |
3813 | void (*init)(struct CharDriverState *s), | |
3814 | Error **errp) | |
3815 | { | |
3816 | Error *local_err = NULL; | |
3817 | CharDriver *cd; | |
3818 | CharDriverState *chr; | |
3819 | GSList *i; | |
3820 | ChardevReturn *ret = NULL; | |
3821 | ChardevBackend *backend; | |
3822 | const char *id = qemu_opts_id(opts); | |
3823 | char *bid = NULL; | |
3824 | ||
3825 | if (id == NULL) { | |
3826 | error_setg(errp, "chardev: no id specified"); | |
3827 | goto err; | |
3828 | } | |
3829 | ||
3830 | if (qemu_opt_get(opts, "backend") == NULL) { | |
3831 | error_setg(errp, "chardev: \"%s\" missing backend", | |
3832 | qemu_opts_id(opts)); | |
3833 | goto err; | |
3834 | } | |
3835 | for (i = backends; i; i = i->next) { | |
3836 | cd = i->data; | |
3837 | ||
3838 | if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) { | |
3839 | break; | |
3840 | } | |
3841 | } | |
3842 | if (i == NULL) { | |
3843 | error_setg(errp, "chardev: backend \"%s\" not found", | |
3844 | qemu_opt_get(opts, "backend")); | |
3845 | goto err; | |
3846 | } | |
3847 | ||
3848 | backend = g_new0(ChardevBackend, 1); | |
3849 | ||
3850 | if (qemu_opt_get_bool(opts, "mux", 0)) { | |
3851 | bid = g_strdup_printf("%s-base", id); | |
3852 | } | |
3853 | ||
3854 | chr = NULL; | |
3855 | backend->type = cd->kind; | |
3856 | if (cd->parse) { | |
3857 | cd->parse(opts, backend, &local_err); | |
3858 | if (local_err) { | |
3859 | error_propagate(errp, local_err); | |
3860 | goto qapi_out; | |
3861 | } | |
3862 | } else { | |
3863 | ChardevCommon *cc = g_new0(ChardevCommon, 1); | |
3864 | qemu_chr_parse_common(opts, cc); | |
3865 | backend->u.null.data = cc; /* Any ChardevCommon member would work */ | |
3866 | } | |
3867 | ||
3868 | ret = qmp_chardev_add(bid ? bid : id, backend, errp); | |
3869 | if (!ret) { | |
3870 | goto qapi_out; | |
3871 | } | |
3872 | ||
3873 | if (bid) { | |
3874 | qapi_free_ChardevBackend(backend); | |
3875 | qapi_free_ChardevReturn(ret); | |
3876 | backend = g_new0(ChardevBackend, 1); | |
3877 | backend->u.mux.data = g_new0(ChardevMux, 1); | |
3878 | backend->type = CHARDEV_BACKEND_KIND_MUX; | |
3879 | backend->u.mux.data->chardev = g_strdup(bid); | |
3880 | ret = qmp_chardev_add(id, backend, errp); | |
3881 | if (!ret) { | |
3882 | chr = qemu_chr_find(bid); | |
3883 | qemu_chr_delete(chr); | |
3884 | chr = NULL; | |
3885 | goto qapi_out; | |
3886 | } | |
3887 | } | |
3888 | ||
3889 | chr = qemu_chr_find(id); | |
3890 | chr->opts = opts; | |
3891 | ||
3892 | qapi_out: | |
3893 | qapi_free_ChardevBackend(backend); | |
3894 | qapi_free_ChardevReturn(ret); | |
3895 | g_free(bid); | |
3896 | return chr; | |
3897 | ||
3898 | err: | |
3899 | qemu_opts_del(opts); | |
3900 | return NULL; | |
3901 | } | |
3902 | ||
3903 | CharDriverState *qemu_chr_new_noreplay(const char *label, const char *filename, | |
3904 | void (*init)(struct CharDriverState *s)) | |
3905 | { | |
3906 | const char *p; | |
3907 | CharDriverState *chr; | |
3908 | QemuOpts *opts; | |
3909 | Error *err = NULL; | |
3910 | ||
3911 | if (strstart(filename, "chardev:", &p)) { | |
3912 | return qemu_chr_find(p); | |
3913 | } | |
3914 | ||
3915 | opts = qemu_chr_parse_compat(label, filename); | |
3916 | if (!opts) | |
3917 | return NULL; | |
3918 | ||
3919 | chr = qemu_chr_new_from_opts(opts, init, &err); | |
3920 | if (err) { | |
3921 | error_report_err(err); | |
3922 | } | |
3923 | if (chr && qemu_opt_get_bool(opts, "mux", 0)) { | |
3924 | qemu_chr_fe_claim_no_fail(chr); | |
3925 | monitor_init(chr, MONITOR_USE_READLINE); | |
3926 | } | |
3927 | return chr; | |
3928 | } | |
3929 | ||
3930 | CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s)) | |
3931 | { | |
3932 | CharDriverState *chr; | |
3933 | chr = qemu_chr_new_noreplay(label, filename, init); | |
3934 | if (chr) { | |
3935 | chr->replay = replay_mode != REPLAY_MODE_NONE; | |
3936 | if (chr->replay && chr->chr_ioctl) { | |
3937 | fprintf(stderr, | |
3938 | "Replay: ioctl is not supported for serial devices yet\n"); | |
3939 | } | |
3940 | replay_register_char_driver(chr); | |
3941 | } | |
3942 | return chr; | |
3943 | } | |
3944 | ||
3945 | void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo) | |
3946 | { | |
3947 | if (chr->chr_set_echo) { | |
3948 | chr->chr_set_echo(chr, echo); | |
3949 | } | |
3950 | } | |
3951 | ||
3952 | void qemu_chr_fe_set_open(struct CharDriverState *chr, int fe_open) | |
3953 | { | |
3954 | if (chr->fe_open == fe_open) { | |
3955 | return; | |
3956 | } | |
3957 | chr->fe_open = fe_open; | |
3958 | if (chr->chr_set_fe_open) { | |
3959 | chr->chr_set_fe_open(chr, fe_open); | |
3960 | } | |
3961 | } | |
3962 | ||
3963 | void qemu_chr_fe_event(struct CharDriverState *chr, int event) | |
3964 | { | |
3965 | if (chr->chr_fe_event) { | |
3966 | chr->chr_fe_event(chr, event); | |
3967 | } | |
3968 | } | |
3969 | ||
3970 | int qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond, | |
3971 | GIOFunc func, void *user_data) | |
3972 | { | |
3973 | GSource *src; | |
3974 | guint tag; | |
3975 | ||
3976 | if (s->chr_add_watch == NULL) { | |
3977 | return -ENOSYS; | |
3978 | } | |
3979 | ||
3980 | src = s->chr_add_watch(s, cond); | |
3981 | if (!src) { | |
3982 | return -EINVAL; | |
3983 | } | |
3984 | ||
3985 | g_source_set_callback(src, (GSourceFunc)func, user_data, NULL); | |
3986 | tag = g_source_attach(src, NULL); | |
3987 | g_source_unref(src); | |
3988 | ||
3989 | return tag; | |
3990 | } | |
3991 | ||
3992 | int qemu_chr_fe_claim(CharDriverState *s) | |
3993 | { | |
3994 | if (s->avail_connections < 1) { | |
3995 | return -1; | |
3996 | } | |
3997 | s->avail_connections--; | |
3998 | return 0; | |
3999 | } | |
4000 | ||
4001 | void qemu_chr_fe_claim_no_fail(CharDriverState *s) | |
4002 | { | |
4003 | if (qemu_chr_fe_claim(s) != 0) { | |
4004 | fprintf(stderr, "%s: error chardev \"%s\" already used\n", | |
4005 | __func__, s->label); | |
4006 | exit(1); | |
4007 | } | |
4008 | } | |
4009 | ||
4010 | void qemu_chr_fe_release(CharDriverState *s) | |
4011 | { | |
4012 | s->avail_connections++; | |
4013 | } | |
4014 | ||
4015 | static void qemu_chr_free_common(CharDriverState *chr) | |
4016 | { | |
4017 | g_free(chr->filename); | |
4018 | g_free(chr->label); | |
4019 | qemu_opts_del(chr->opts); | |
4020 | if (chr->logfd != -1) { | |
4021 | close(chr->logfd); | |
4022 | } | |
4023 | qemu_mutex_destroy(&chr->chr_write_lock); | |
4024 | g_free(chr); | |
4025 | } | |
4026 | ||
4027 | void qemu_chr_free(CharDriverState *chr) | |
4028 | { | |
4029 | if (chr->chr_close) { | |
4030 | chr->chr_close(chr); | |
4031 | } | |
4032 | qemu_chr_free_common(chr); | |
4033 | } | |
4034 | ||
4035 | void qemu_chr_delete(CharDriverState *chr) | |
4036 | { | |
4037 | QTAILQ_REMOVE(&chardevs, chr, next); | |
4038 | qemu_chr_free(chr); | |
4039 | } | |
4040 | ||
4041 | ChardevInfoList *qmp_query_chardev(Error **errp) | |
4042 | { | |
4043 | ChardevInfoList *chr_list = NULL; | |
4044 | CharDriverState *chr; | |
4045 | ||
4046 | QTAILQ_FOREACH(chr, &chardevs, next) { | |
4047 | ChardevInfoList *info = g_malloc0(sizeof(*info)); | |
4048 | info->value = g_malloc0(sizeof(*info->value)); | |
4049 | info->value->label = g_strdup(chr->label); | |
4050 | info->value->filename = g_strdup(chr->filename); | |
4051 | info->value->frontend_open = chr->fe_open; | |
4052 | ||
4053 | info->next = chr_list; | |
4054 | chr_list = info; | |
4055 | } | |
4056 | ||
4057 | return chr_list; | |
4058 | } | |
4059 | ||
4060 | ChardevBackendInfoList *qmp_query_chardev_backends(Error **errp) | |
4061 | { | |
4062 | ChardevBackendInfoList *backend_list = NULL; | |
4063 | CharDriver *c = NULL; | |
4064 | GSList *i = NULL; | |
4065 | ||
4066 | for (i = backends; i; i = i->next) { | |
4067 | ChardevBackendInfoList *info = g_malloc0(sizeof(*info)); | |
4068 | c = i->data; | |
4069 | info->value = g_malloc0(sizeof(*info->value)); | |
4070 | info->value->name = g_strdup(c->name); | |
4071 | ||
4072 | info->next = backend_list; | |
4073 | backend_list = info; | |
4074 | } | |
4075 | ||
4076 | return backend_list; | |
4077 | } | |
4078 | ||
4079 | CharDriverState *qemu_chr_find(const char *name) | |
4080 | { | |
4081 | CharDriverState *chr; | |
4082 | ||
4083 | QTAILQ_FOREACH(chr, &chardevs, next) { | |
4084 | if (strcmp(chr->label, name) != 0) | |
4085 | continue; | |
4086 | return chr; | |
4087 | } | |
4088 | return NULL; | |
4089 | } | |
4090 | ||
4091 | /* Get a character (serial) device interface. */ | |
4092 | CharDriverState *qemu_char_get_next_serial(void) | |
4093 | { | |
4094 | static int next_serial; | |
4095 | CharDriverState *chr; | |
4096 | ||
4097 | /* FIXME: This function needs to go away: use chardev properties! */ | |
4098 | ||
4099 | while (next_serial < MAX_SERIAL_PORTS && serial_hds[next_serial]) { | |
4100 | chr = serial_hds[next_serial++]; | |
4101 | qemu_chr_fe_claim_no_fail(chr); | |
4102 | return chr; | |
4103 | } | |
4104 | return NULL; | |
4105 | } | |
4106 | ||
4107 | QemuOptsList qemu_chardev_opts = { | |
4108 | .name = "chardev", | |
4109 | .implied_opt_name = "backend", | |
4110 | .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head), | |
4111 | .desc = { | |
4112 | { | |
4113 | .name = "backend", | |
4114 | .type = QEMU_OPT_STRING, | |
4115 | },{ | |
4116 | .name = "path", | |
4117 | .type = QEMU_OPT_STRING, | |
4118 | },{ | |
4119 | .name = "host", | |
4120 | .type = QEMU_OPT_STRING, | |
4121 | },{ | |
4122 | .name = "port", | |
4123 | .type = QEMU_OPT_STRING, | |
4124 | },{ | |
4125 | .name = "localaddr", | |
4126 | .type = QEMU_OPT_STRING, | |
4127 | },{ | |
4128 | .name = "localport", | |
4129 | .type = QEMU_OPT_STRING, | |
4130 | },{ | |
4131 | .name = "to", | |
4132 | .type = QEMU_OPT_NUMBER, | |
4133 | },{ | |
4134 | .name = "ipv4", | |
4135 | .type = QEMU_OPT_BOOL, | |
4136 | },{ | |
4137 | .name = "ipv6", | |
4138 | .type = QEMU_OPT_BOOL, | |
4139 | },{ | |
4140 | .name = "wait", | |
4141 | .type = QEMU_OPT_BOOL, | |
4142 | },{ | |
4143 | .name = "server", | |
4144 | .type = QEMU_OPT_BOOL, | |
4145 | },{ | |
4146 | .name = "delay", | |
4147 | .type = QEMU_OPT_BOOL, | |
4148 | },{ | |
4149 | .name = "reconnect", | |
4150 | .type = QEMU_OPT_NUMBER, | |
4151 | },{ | |
4152 | .name = "telnet", | |
4153 | .type = QEMU_OPT_BOOL, | |
4154 | },{ | |
4155 | .name = "tls-creds", | |
4156 | .type = QEMU_OPT_STRING, | |
4157 | },{ | |
4158 | .name = "width", | |
4159 | .type = QEMU_OPT_NUMBER, | |
4160 | },{ | |
4161 | .name = "height", | |
4162 | .type = QEMU_OPT_NUMBER, | |
4163 | },{ | |
4164 | .name = "cols", | |
4165 | .type = QEMU_OPT_NUMBER, | |
4166 | },{ | |
4167 | .name = "rows", | |
4168 | .type = QEMU_OPT_NUMBER, | |
4169 | },{ | |
4170 | .name = "mux", | |
4171 | .type = QEMU_OPT_BOOL, | |
4172 | },{ | |
4173 | .name = "signal", | |
4174 | .type = QEMU_OPT_BOOL, | |
4175 | },{ | |
4176 | .name = "name", | |
4177 | .type = QEMU_OPT_STRING, | |
4178 | },{ | |
4179 | .name = "debug", | |
4180 | .type = QEMU_OPT_NUMBER, | |
4181 | },{ | |
4182 | .name = "size", | |
4183 | .type = QEMU_OPT_SIZE, | |
4184 | },{ | |
4185 | .name = "chardev", | |
4186 | .type = QEMU_OPT_STRING, | |
4187 | },{ | |
4188 | .name = "append", | |
4189 | .type = QEMU_OPT_BOOL, | |
4190 | },{ | |
4191 | .name = "logfile", | |
4192 | .type = QEMU_OPT_STRING, | |
4193 | },{ | |
4194 | .name = "logappend", | |
4195 | .type = QEMU_OPT_BOOL, | |
4196 | }, | |
4197 | { /* end of list */ } | |
4198 | }, | |
4199 | }; | |
4200 | ||
4201 | #ifdef _WIN32 | |
4202 | ||
4203 | static CharDriverState *qmp_chardev_open_file(const char *id, | |
4204 | ChardevBackend *backend, | |
4205 | ChardevReturn *ret, | |
4206 | Error **errp) | |
4207 | { | |
4208 | ChardevFile *file = backend->u.file.data; | |
4209 | ChardevCommon *common = qapi_ChardevFile_base(file); | |
4210 | HANDLE out; | |
4211 | ||
4212 | if (file->has_in) { | |
4213 | error_setg(errp, "input file not supported"); | |
4214 | return NULL; | |
4215 | } | |
4216 | ||
4217 | out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL, | |
4218 | OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL); | |
4219 | if (out == INVALID_HANDLE_VALUE) { | |
4220 | error_setg(errp, "open %s failed", file->out); | |
4221 | return NULL; | |
4222 | } | |
4223 | return qemu_chr_open_win_file(out, common, errp); | |
4224 | } | |
4225 | ||
4226 | static CharDriverState *qmp_chardev_open_serial(const char *id, | |
4227 | ChardevBackend *backend, | |
4228 | ChardevReturn *ret, | |
4229 | Error **errp) | |
4230 | { | |
4231 | ChardevHostdev *serial = backend->u.serial.data; | |
4232 | ChardevCommon *common = qapi_ChardevHostdev_base(serial); | |
4233 | return qemu_chr_open_win_path(serial->device, common, errp); | |
4234 | } | |
4235 | ||
4236 | #else /* WIN32 */ | |
4237 | ||
4238 | static int qmp_chardev_open_file_source(char *src, int flags, | |
4239 | Error **errp) | |
4240 | { | |
4241 | int fd = -1; | |
4242 | ||
4243 | TFR(fd = qemu_open(src, flags, 0666)); | |
4244 | if (fd == -1) { | |
4245 | error_setg_file_open(errp, errno, src); | |
4246 | } | |
4247 | return fd; | |
4248 | } | |
4249 | ||
4250 | static CharDriverState *qmp_chardev_open_file(const char *id, | |
4251 | ChardevBackend *backend, | |
4252 | ChardevReturn *ret, | |
4253 | Error **errp) | |
4254 | { | |
4255 | ChardevFile *file = backend->u.file.data; | |
4256 | ChardevCommon *common = qapi_ChardevFile_base(file); | |
4257 | int flags, in = -1, out; | |
4258 | ||
4259 | flags = O_WRONLY | O_CREAT | O_BINARY; | |
4260 | if (file->has_append && file->append) { | |
4261 | flags |= O_APPEND; | |
4262 | } else { | |
4263 | flags |= O_TRUNC; | |
4264 | } | |
4265 | ||
4266 | out = qmp_chardev_open_file_source(file->out, flags, errp); | |
4267 | if (out < 0) { | |
4268 | return NULL; | |
4269 | } | |
4270 | ||
4271 | if (file->has_in) { | |
4272 | flags = O_RDONLY; | |
4273 | in = qmp_chardev_open_file_source(file->in, flags, errp); | |
4274 | if (in < 0) { | |
4275 | qemu_close(out); | |
4276 | return NULL; | |
4277 | } | |
4278 | } | |
4279 | ||
4280 | return qemu_chr_open_fd(in, out, common, errp); | |
4281 | } | |
4282 | ||
4283 | #ifdef HAVE_CHARDEV_SERIAL | |
4284 | static CharDriverState *qmp_chardev_open_serial(const char *id, | |
4285 | ChardevBackend *backend, | |
4286 | ChardevReturn *ret, | |
4287 | Error **errp) | |
4288 | { | |
4289 | ChardevHostdev *serial = backend->u.serial.data; | |
4290 | ChardevCommon *common = qapi_ChardevHostdev_base(serial); | |
4291 | int fd; | |
4292 | ||
4293 | fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp); | |
4294 | if (fd < 0) { | |
4295 | return NULL; | |
4296 | } | |
4297 | qemu_set_nonblock(fd); | |
4298 | return qemu_chr_open_tty_fd(fd, common, errp); | |
4299 | } | |
4300 | #endif | |
4301 | ||
4302 | #ifdef HAVE_CHARDEV_PARPORT | |
4303 | static CharDriverState *qmp_chardev_open_parallel(const char *id, | |
4304 | ChardevBackend *backend, | |
4305 | ChardevReturn *ret, | |
4306 | Error **errp) | |
4307 | { | |
4308 | ChardevHostdev *parallel = backend->u.parallel.data; | |
4309 | ChardevCommon *common = qapi_ChardevHostdev_base(parallel); | |
4310 | int fd; | |
4311 | ||
4312 | fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp); | |
4313 | if (fd < 0) { | |
4314 | return NULL; | |
4315 | } | |
4316 | return qemu_chr_open_pp_fd(fd, common, errp); | |
4317 | } | |
4318 | #endif | |
4319 | ||
4320 | #endif /* WIN32 */ | |
4321 | ||
4322 | static gboolean socket_reconnect_timeout(gpointer opaque) | |
4323 | { | |
4324 | CharDriverState *chr = opaque; | |
4325 | TCPCharDriver *s = chr->opaque; | |
4326 | QIOChannelSocket *sioc; | |
4327 | ||
4328 | s->reconnect_timer = 0; | |
4329 | ||
4330 | if (chr->be_open) { | |
4331 | return false; | |
4332 | } | |
4333 | ||
4334 | sioc = qio_channel_socket_new(); | |
4335 | qio_channel_socket_connect_async(sioc, s->addr, | |
4336 | qemu_chr_socket_connected, | |
4337 | chr, NULL); | |
4338 | ||
4339 | return false; | |
4340 | } | |
4341 | ||
4342 | static CharDriverState *qmp_chardev_open_socket(const char *id, | |
4343 | ChardevBackend *backend, | |
4344 | ChardevReturn *ret, | |
4345 | Error **errp) | |
4346 | { | |
4347 | CharDriverState *chr; | |
4348 | TCPCharDriver *s; | |
4349 | ChardevSocket *sock = backend->u.socket.data; | |
4350 | SocketAddress *addr = sock->addr; | |
4351 | bool do_nodelay = sock->has_nodelay ? sock->nodelay : false; | |
4352 | bool is_listen = sock->has_server ? sock->server : true; | |
4353 | bool is_telnet = sock->has_telnet ? sock->telnet : false; | |
4354 | bool is_waitconnect = sock->has_wait ? sock->wait : false; | |
4355 | int64_t reconnect = sock->has_reconnect ? sock->reconnect : 0; | |
4356 | ChardevCommon *common = qapi_ChardevSocket_base(sock); | |
4357 | QIOChannelSocket *sioc = NULL; | |
4358 | ||
4359 | chr = qemu_chr_alloc(common, errp); | |
4360 | if (!chr) { | |
4361 | return NULL; | |
4362 | } | |
4363 | s = g_new0(TCPCharDriver, 1); | |
4364 | ||
4365 | s->is_unix = addr->type == SOCKET_ADDRESS_KIND_UNIX; | |
4366 | s->is_listen = is_listen; | |
4367 | s->is_telnet = is_telnet; | |
4368 | s->do_nodelay = do_nodelay; | |
4369 | if (sock->tls_creds) { | |
4370 | Object *creds; | |
4371 | creds = object_resolve_path_component( | |
4372 | object_get_objects_root(), sock->tls_creds); | |
4373 | if (!creds) { | |
4374 | error_setg(errp, "No TLS credentials with id '%s'", | |
4375 | sock->tls_creds); | |
4376 | goto error; | |
4377 | } | |
4378 | s->tls_creds = (QCryptoTLSCreds *) | |
4379 | object_dynamic_cast(creds, | |
4380 | TYPE_QCRYPTO_TLS_CREDS); | |
4381 | if (!s->tls_creds) { | |
4382 | error_setg(errp, "Object with id '%s' is not TLS credentials", | |
4383 | sock->tls_creds); | |
4384 | goto error; | |
4385 | } | |
4386 | object_ref(OBJECT(s->tls_creds)); | |
4387 | if (is_listen) { | |
4388 | if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_SERVER) { | |
4389 | error_setg(errp, "%s", | |
4390 | "Expected TLS credentials for server endpoint"); | |
4391 | goto error; | |
4392 | } | |
4393 | } else { | |
4394 | if (s->tls_creds->endpoint != QCRYPTO_TLS_CREDS_ENDPOINT_CLIENT) { | |
4395 | error_setg(errp, "%s", | |
4396 | "Expected TLS credentials for client endpoint"); | |
4397 | goto error; | |
4398 | } | |
4399 | } | |
4400 | } | |
4401 | ||
4402 | qapi_copy_SocketAddress(&s->addr, sock->addr); | |
4403 | ||
4404 | chr->opaque = s; | |
4405 | chr->chr_write = tcp_chr_write; | |
4406 | chr->chr_sync_read = tcp_chr_sync_read; | |
4407 | chr->chr_close = tcp_chr_close; | |
4408 | chr->get_msgfds = tcp_get_msgfds; | |
4409 | chr->set_msgfds = tcp_set_msgfds; | |
4410 | chr->chr_add_client = tcp_chr_add_client; | |
4411 | chr->chr_add_watch = tcp_chr_add_watch; | |
4412 | chr->chr_update_read_handler = tcp_chr_update_read_handler; | |
4413 | /* be isn't opened until we get a connection */ | |
4414 | chr->explicit_be_open = true; | |
4415 | ||
4416 | chr->filename = SocketAddress_to_str("disconnected:", | |
4417 | addr, is_listen, is_telnet); | |
4418 | ||
4419 | if (is_listen) { | |
4420 | if (is_telnet) { | |
4421 | s->do_telnetopt = 1; | |
4422 | } | |
4423 | } else if (reconnect > 0) { | |
4424 | s->reconnect_time = reconnect; | |
4425 | } | |
4426 | ||
4427 | sioc = qio_channel_socket_new(); | |
4428 | if (s->reconnect_time) { | |
4429 | qio_channel_socket_connect_async(sioc, s->addr, | |
4430 | qemu_chr_socket_connected, | |
4431 | chr, NULL); | |
4432 | } else if (s->is_listen) { | |
4433 | if (qio_channel_socket_listen_sync(sioc, s->addr, errp) < 0) { | |
4434 | goto error; | |
4435 | } | |
4436 | s->listen_ioc = sioc; | |
4437 | if (is_waitconnect) { | |
4438 | fprintf(stderr, "QEMU waiting for connection on: %s\n", | |
4439 | chr->filename); | |
4440 | tcp_chr_accept(QIO_CHANNEL(s->listen_ioc), G_IO_IN, chr); | |
4441 | } | |
4442 | qio_channel_set_blocking(QIO_CHANNEL(s->listen_ioc), false, NULL); | |
4443 | if (!s->ioc) { | |
4444 | s->listen_tag = qio_channel_add_watch( | |
4445 | QIO_CHANNEL(s->listen_ioc), G_IO_IN, tcp_chr_accept, chr, NULL); | |
4446 | } | |
4447 | } else { | |
4448 | if (qio_channel_socket_connect_sync(sioc, s->addr, errp) < 0) { | |
4449 | goto error; | |
4450 | } | |
4451 | tcp_chr_new_client(chr, sioc); | |
4452 | object_unref(OBJECT(sioc)); | |
4453 | } | |
4454 | ||
4455 | return chr; | |
4456 | ||
4457 | error: | |
4458 | if (sioc) { | |
4459 | object_unref(OBJECT(sioc)); | |
4460 | } | |
4461 | if (s->tls_creds) { | |
4462 | object_unref(OBJECT(s->tls_creds)); | |
4463 | } | |
4464 | g_free(s); | |
4465 | qemu_chr_free_common(chr); | |
4466 | return NULL; | |
4467 | } | |
4468 | ||
4469 | static CharDriverState *qmp_chardev_open_udp(const char *id, | |
4470 | ChardevBackend *backend, | |
4471 | ChardevReturn *ret, | |
4472 | Error **errp) | |
4473 | { | |
4474 | ChardevUdp *udp = backend->u.udp.data; | |
4475 | ChardevCommon *common = qapi_ChardevUdp_base(udp); | |
4476 | QIOChannelSocket *sioc = qio_channel_socket_new(); | |
4477 | ||
4478 | if (qio_channel_socket_dgram_sync(sioc, | |
4479 | udp->local, udp->remote, | |
4480 | errp) < 0) { | |
4481 | object_unref(OBJECT(sioc)); | |
4482 | return NULL; | |
4483 | } | |
4484 | return qemu_chr_open_udp(sioc, common, errp); | |
4485 | } | |
4486 | ||
4487 | ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend, | |
4488 | Error **errp) | |
4489 | { | |
4490 | ChardevReturn *ret = g_new0(ChardevReturn, 1); | |
4491 | CharDriverState *chr = NULL; | |
4492 | Error *local_err = NULL; | |
4493 | GSList *i; | |
4494 | CharDriver *cd; | |
4495 | ||
4496 | chr = qemu_chr_find(id); | |
4497 | if (chr) { | |
4498 | error_setg(errp, "Chardev '%s' already exists", id); | |
4499 | g_free(ret); | |
4500 | return NULL; | |
4501 | } | |
4502 | ||
4503 | for (i = backends; i; i = i->next) { | |
4504 | cd = i->data; | |
4505 | ||
4506 | if (cd->kind == backend->type) { | |
4507 | chr = cd->create(id, backend, ret, &local_err); | |
4508 | if (local_err) { | |
4509 | error_propagate(errp, local_err); | |
4510 | goto out_error; | |
4511 | } | |
4512 | break; | |
4513 | } | |
4514 | } | |
4515 | ||
4516 | if (chr == NULL) { | |
4517 | assert(!i); | |
4518 | error_setg(errp, "chardev backend not available"); | |
4519 | goto out_error; | |
4520 | } | |
4521 | ||
4522 | chr->label = g_strdup(id); | |
4523 | chr->avail_connections = | |
4524 | (backend->type == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1; | |
4525 | if (!chr->filename) { | |
4526 | chr->filename = g_strdup(ChardevBackendKind_lookup[backend->type]); | |
4527 | } | |
4528 | if (!chr->explicit_be_open) { | |
4529 | qemu_chr_be_event(chr, CHR_EVENT_OPENED); | |
4530 | } | |
4531 | QTAILQ_INSERT_TAIL(&chardevs, chr, next); | |
4532 | return ret; | |
4533 | ||
4534 | out_error: | |
4535 | g_free(ret); | |
4536 | return NULL; | |
4537 | } | |
4538 | ||
4539 | void qmp_chardev_remove(const char *id, Error **errp) | |
4540 | { | |
4541 | CharDriverState *chr; | |
4542 | ||
4543 | chr = qemu_chr_find(id); | |
4544 | if (chr == NULL) { | |
4545 | error_setg(errp, "Chardev '%s' not found", id); | |
4546 | return; | |
4547 | } | |
4548 | if (chr->chr_can_read || chr->chr_read || | |
4549 | chr->chr_event || chr->handler_opaque) { | |
4550 | error_setg(errp, "Chardev '%s' is busy", id); | |
4551 | return; | |
4552 | } | |
4553 | if (chr->replay) { | |
4554 | error_setg(errp, | |
4555 | "Chardev '%s' cannot be unplugged in record/replay mode", id); | |
4556 | return; | |
4557 | } | |
4558 | qemu_chr_delete(chr); | |
4559 | } | |
4560 | ||
4561 | static void register_types(void) | |
4562 | { | |
4563 | register_char_driver("null", CHARDEV_BACKEND_KIND_NULL, NULL, | |
4564 | qemu_chr_open_null); | |
4565 | register_char_driver("socket", CHARDEV_BACKEND_KIND_SOCKET, | |
4566 | qemu_chr_parse_socket, qmp_chardev_open_socket); | |
4567 | register_char_driver("udp", CHARDEV_BACKEND_KIND_UDP, qemu_chr_parse_udp, | |
4568 | qmp_chardev_open_udp); | |
4569 | register_char_driver("ringbuf", CHARDEV_BACKEND_KIND_RINGBUF, | |
4570 | qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf); | |
4571 | register_char_driver("file", CHARDEV_BACKEND_KIND_FILE, | |
4572 | qemu_chr_parse_file_out, qmp_chardev_open_file); | |
4573 | register_char_driver("stdio", CHARDEV_BACKEND_KIND_STDIO, | |
4574 | qemu_chr_parse_stdio, qemu_chr_open_stdio); | |
4575 | #if defined HAVE_CHARDEV_SERIAL | |
4576 | register_char_driver("serial", CHARDEV_BACKEND_KIND_SERIAL, | |
4577 | qemu_chr_parse_serial, qmp_chardev_open_serial); | |
4578 | register_char_driver("tty", CHARDEV_BACKEND_KIND_SERIAL, | |
4579 | qemu_chr_parse_serial, qmp_chardev_open_serial); | |
4580 | #endif | |
4581 | #ifdef HAVE_CHARDEV_PARPORT | |
4582 | register_char_driver("parallel", CHARDEV_BACKEND_KIND_PARALLEL, | |
4583 | qemu_chr_parse_parallel, qmp_chardev_open_parallel); | |
4584 | register_char_driver("parport", CHARDEV_BACKEND_KIND_PARALLEL, | |
4585 | qemu_chr_parse_parallel, qmp_chardev_open_parallel); | |
4586 | #endif | |
4587 | #ifdef HAVE_CHARDEV_PTY | |
4588 | register_char_driver("pty", CHARDEV_BACKEND_KIND_PTY, NULL, | |
4589 | qemu_chr_open_pty); | |
4590 | #endif | |
4591 | #ifdef _WIN32 | |
4592 | register_char_driver("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL, | |
4593 | qemu_chr_open_win_con); | |
4594 | #endif | |
4595 | register_char_driver("pipe", CHARDEV_BACKEND_KIND_PIPE, | |
4596 | qemu_chr_parse_pipe, qemu_chr_open_pipe); | |
4597 | register_char_driver("mux", CHARDEV_BACKEND_KIND_MUX, qemu_chr_parse_mux, | |
4598 | qemu_chr_open_mux); | |
4599 | /* Bug-compatibility: */ | |
4600 | register_char_driver("memory", CHARDEV_BACKEND_KIND_MEMORY, | |
4601 | qemu_chr_parse_ringbuf, qemu_chr_open_ringbuf); | |
4602 | /* this must be done after machine init, since we register FEs with muxes | |
4603 | * as part of realize functions like serial_isa_realizefn when -nographic | |
4604 | * is specified | |
4605 | */ | |
4606 | qemu_add_machine_init_done_notifier(&muxes_realize_notify); | |
4607 | } | |
4608 | ||
4609 | type_init(register_types); |