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1 | /* | |
2 | * QEMU System Emulator | |
3 | * | |
4 | * Copyright (c) 2003-2008 Fabrice Bellard | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
24 | #include "qemu-common.h" | |
25 | #include "monitor/monitor.h" | |
26 | #include "ui/console.h" | |
27 | #include "sysemu/sysemu.h" | |
28 | #include "qemu/timer.h" | |
29 | #include "sysemu/char.h" | |
30 | #include "hw/usb.h" | |
31 | #include "qmp-commands.h" | |
32 | ||
33 | #include <unistd.h> | |
34 | #include <fcntl.h> | |
35 | #include <time.h> | |
36 | #include <errno.h> | |
37 | #include <sys/time.h> | |
38 | #include <zlib.h> | |
39 | ||
40 | #ifndef _WIN32 | |
41 | #include <sys/times.h> | |
42 | #include <sys/wait.h> | |
43 | #include <termios.h> | |
44 | #include <sys/mman.h> | |
45 | #include <sys/ioctl.h> | |
46 | #include <sys/resource.h> | |
47 | #include <sys/socket.h> | |
48 | #include <netinet/in.h> | |
49 | #include <net/if.h> | |
50 | #include <arpa/inet.h> | |
51 | #include <dirent.h> | |
52 | #include <netdb.h> | |
53 | #include <sys/select.h> | |
54 | #ifdef CONFIG_BSD | |
55 | #include <sys/stat.h> | |
56 | #if defined(__GLIBC__) | |
57 | #include <pty.h> | |
58 | #elif defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__) | |
59 | #include <libutil.h> | |
60 | #else | |
61 | #include <util.h> | |
62 | #endif | |
63 | #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) | |
64 | #include <dev/ppbus/ppi.h> | |
65 | #include <dev/ppbus/ppbconf.h> | |
66 | #elif defined(__DragonFly__) | |
67 | #include <dev/misc/ppi/ppi.h> | |
68 | #include <bus/ppbus/ppbconf.h> | |
69 | #endif | |
70 | #else | |
71 | #ifdef __linux__ | |
72 | #include <pty.h> | |
73 | ||
74 | #include <linux/ppdev.h> | |
75 | #include <linux/parport.h> | |
76 | #endif | |
77 | #ifdef __sun__ | |
78 | #include <sys/stat.h> | |
79 | #include <sys/ethernet.h> | |
80 | #include <sys/sockio.h> | |
81 | #include <netinet/arp.h> | |
82 | #include <netinet/in.h> | |
83 | #include <netinet/in_systm.h> | |
84 | #include <netinet/ip.h> | |
85 | #include <netinet/ip_icmp.h> // must come after ip.h | |
86 | #include <netinet/udp.h> | |
87 | #include <netinet/tcp.h> | |
88 | #include <net/if.h> | |
89 | #include <syslog.h> | |
90 | #include <stropts.h> | |
91 | #endif | |
92 | #endif | |
93 | #endif | |
94 | ||
95 | #include "qemu/sockets.h" | |
96 | #include "ui/qemu-spice.h" | |
97 | ||
98 | #define READ_BUF_LEN 4096 | |
99 | ||
100 | /***********************************************************/ | |
101 | /* character device */ | |
102 | ||
103 | static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs = | |
104 | QTAILQ_HEAD_INITIALIZER(chardevs); | |
105 | ||
106 | void qemu_chr_be_event(CharDriverState *s, int event) | |
107 | { | |
108 | /* Keep track if the char device is open */ | |
109 | switch (event) { | |
110 | case CHR_EVENT_OPENED: | |
111 | s->be_open = 1; | |
112 | break; | |
113 | case CHR_EVENT_CLOSED: | |
114 | s->be_open = 0; | |
115 | break; | |
116 | } | |
117 | ||
118 | if (!s->chr_event) | |
119 | return; | |
120 | s->chr_event(s->handler_opaque, event); | |
121 | } | |
122 | ||
123 | static gboolean qemu_chr_be_generic_open_bh(gpointer opaque) | |
124 | { | |
125 | CharDriverState *s = opaque; | |
126 | qemu_chr_be_event(s, CHR_EVENT_OPENED); | |
127 | s->idle_tag = 0; | |
128 | return FALSE; | |
129 | } | |
130 | ||
131 | void qemu_chr_be_generic_open(CharDriverState *s) | |
132 | { | |
133 | if (s->idle_tag == 0) { | |
134 | s->idle_tag = g_idle_add(qemu_chr_be_generic_open_bh, s); | |
135 | } | |
136 | } | |
137 | ||
138 | int qemu_chr_fe_write(CharDriverState *s, const uint8_t *buf, int len) | |
139 | { | |
140 | return s->chr_write(s, buf, len); | |
141 | } | |
142 | ||
143 | int qemu_chr_fe_write_all(CharDriverState *s, const uint8_t *buf, int len) | |
144 | { | |
145 | int offset = 0; | |
146 | int res; | |
147 | ||
148 | while (offset < len) { | |
149 | do { | |
150 | res = s->chr_write(s, buf + offset, len - offset); | |
151 | if (res == -1 && errno == EAGAIN) { | |
152 | g_usleep(100); | |
153 | } | |
154 | } while (res == -1 && errno == EAGAIN); | |
155 | ||
156 | if (res == 0) { | |
157 | break; | |
158 | } | |
159 | ||
160 | if (res < 0) { | |
161 | return res; | |
162 | } | |
163 | ||
164 | offset += res; | |
165 | } | |
166 | ||
167 | return offset; | |
168 | } | |
169 | ||
170 | int qemu_chr_fe_ioctl(CharDriverState *s, int cmd, void *arg) | |
171 | { | |
172 | if (!s->chr_ioctl) | |
173 | return -ENOTSUP; | |
174 | return s->chr_ioctl(s, cmd, arg); | |
175 | } | |
176 | ||
177 | int qemu_chr_be_can_write(CharDriverState *s) | |
178 | { | |
179 | if (!s->chr_can_read) | |
180 | return 0; | |
181 | return s->chr_can_read(s->handler_opaque); | |
182 | } | |
183 | ||
184 | void qemu_chr_be_write(CharDriverState *s, uint8_t *buf, int len) | |
185 | { | |
186 | if (s->chr_read) { | |
187 | s->chr_read(s->handler_opaque, buf, len); | |
188 | } | |
189 | } | |
190 | ||
191 | int qemu_chr_fe_get_msgfd(CharDriverState *s) | |
192 | { | |
193 | return s->get_msgfd ? s->get_msgfd(s) : -1; | |
194 | } | |
195 | ||
196 | int qemu_chr_add_client(CharDriverState *s, int fd) | |
197 | { | |
198 | return s->chr_add_client ? s->chr_add_client(s, fd) : -1; | |
199 | } | |
200 | ||
201 | void qemu_chr_accept_input(CharDriverState *s) | |
202 | { | |
203 | if (s->chr_accept_input) | |
204 | s->chr_accept_input(s); | |
205 | qemu_notify_event(); | |
206 | } | |
207 | ||
208 | void qemu_chr_fe_printf(CharDriverState *s, const char *fmt, ...) | |
209 | { | |
210 | char buf[READ_BUF_LEN]; | |
211 | va_list ap; | |
212 | va_start(ap, fmt); | |
213 | vsnprintf(buf, sizeof(buf), fmt, ap); | |
214 | qemu_chr_fe_write(s, (uint8_t *)buf, strlen(buf)); | |
215 | va_end(ap); | |
216 | } | |
217 | ||
218 | void qemu_chr_add_handlers(CharDriverState *s, | |
219 | IOCanReadHandler *fd_can_read, | |
220 | IOReadHandler *fd_read, | |
221 | IOEventHandler *fd_event, | |
222 | void *opaque) | |
223 | { | |
224 | int fe_open; | |
225 | ||
226 | if (!opaque && !fd_can_read && !fd_read && !fd_event) { | |
227 | fe_open = 0; | |
228 | } else { | |
229 | fe_open = 1; | |
230 | } | |
231 | s->chr_can_read = fd_can_read; | |
232 | s->chr_read = fd_read; | |
233 | s->chr_event = fd_event; | |
234 | s->handler_opaque = opaque; | |
235 | if (s->chr_update_read_handler) | |
236 | s->chr_update_read_handler(s); | |
237 | ||
238 | if (!s->explicit_fe_open) { | |
239 | qemu_chr_fe_set_open(s, fe_open); | |
240 | } | |
241 | ||
242 | /* We're connecting to an already opened device, so let's make sure we | |
243 | also get the open event */ | |
244 | if (fe_open && s->be_open) { | |
245 | qemu_chr_be_generic_open(s); | |
246 | } | |
247 | } | |
248 | ||
249 | static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len) | |
250 | { | |
251 | return len; | |
252 | } | |
253 | ||
254 | static CharDriverState *qemu_chr_open_null(void) | |
255 | { | |
256 | CharDriverState *chr; | |
257 | ||
258 | chr = g_malloc0(sizeof(CharDriverState)); | |
259 | chr->chr_write = null_chr_write; | |
260 | return chr; | |
261 | } | |
262 | ||
263 | /* MUX driver for serial I/O splitting */ | |
264 | #define MAX_MUX 4 | |
265 | #define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */ | |
266 | #define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1) | |
267 | typedef struct { | |
268 | IOCanReadHandler *chr_can_read[MAX_MUX]; | |
269 | IOReadHandler *chr_read[MAX_MUX]; | |
270 | IOEventHandler *chr_event[MAX_MUX]; | |
271 | void *ext_opaque[MAX_MUX]; | |
272 | CharDriverState *drv; | |
273 | int focus; | |
274 | int mux_cnt; | |
275 | int term_got_escape; | |
276 | int max_size; | |
277 | /* Intermediate input buffer allows to catch escape sequences even if the | |
278 | currently active device is not accepting any input - but only until it | |
279 | is full as well. */ | |
280 | unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE]; | |
281 | int prod[MAX_MUX]; | |
282 | int cons[MAX_MUX]; | |
283 | int timestamps; | |
284 | int linestart; | |
285 | int64_t timestamps_start; | |
286 | } MuxDriver; | |
287 | ||
288 | ||
289 | static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len) | |
290 | { | |
291 | MuxDriver *d = chr->opaque; | |
292 | int ret; | |
293 | if (!d->timestamps) { | |
294 | ret = d->drv->chr_write(d->drv, buf, len); | |
295 | } else { | |
296 | int i; | |
297 | ||
298 | ret = 0; | |
299 | for (i = 0; i < len; i++) { | |
300 | if (d->linestart) { | |
301 | char buf1[64]; | |
302 | int64_t ti; | |
303 | int secs; | |
304 | ||
305 | ti = qemu_get_clock_ms(rt_clock); | |
306 | if (d->timestamps_start == -1) | |
307 | d->timestamps_start = ti; | |
308 | ti -= d->timestamps_start; | |
309 | secs = ti / 1000; | |
310 | snprintf(buf1, sizeof(buf1), | |
311 | "[%02d:%02d:%02d.%03d] ", | |
312 | secs / 3600, | |
313 | (secs / 60) % 60, | |
314 | secs % 60, | |
315 | (int)(ti % 1000)); | |
316 | d->drv->chr_write(d->drv, (uint8_t *)buf1, strlen(buf1)); | |
317 | d->linestart = 0; | |
318 | } | |
319 | ret += d->drv->chr_write(d->drv, buf+i, 1); | |
320 | if (buf[i] == '\n') { | |
321 | d->linestart = 1; | |
322 | } | |
323 | } | |
324 | } | |
325 | return ret; | |
326 | } | |
327 | ||
328 | static const char * const mux_help[] = { | |
329 | "% h print this help\n\r", | |
330 | "% x exit emulator\n\r", | |
331 | "% s save disk data back to file (if -snapshot)\n\r", | |
332 | "% t toggle console timestamps\n\r" | |
333 | "% b send break (magic sysrq)\n\r", | |
334 | "% c switch between console and monitor\n\r", | |
335 | "% % sends %\n\r", | |
336 | NULL | |
337 | }; | |
338 | ||
339 | int term_escape_char = 0x01; /* ctrl-a is used for escape */ | |
340 | static void mux_print_help(CharDriverState *chr) | |
341 | { | |
342 | int i, j; | |
343 | char ebuf[15] = "Escape-Char"; | |
344 | char cbuf[50] = "\n\r"; | |
345 | ||
346 | if (term_escape_char > 0 && term_escape_char < 26) { | |
347 | snprintf(cbuf, sizeof(cbuf), "\n\r"); | |
348 | snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a'); | |
349 | } else { | |
350 | snprintf(cbuf, sizeof(cbuf), | |
351 | "\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r", | |
352 | term_escape_char); | |
353 | } | |
354 | chr->chr_write(chr, (uint8_t *)cbuf, strlen(cbuf)); | |
355 | for (i = 0; mux_help[i] != NULL; i++) { | |
356 | for (j=0; mux_help[i][j] != '\0'; j++) { | |
357 | if (mux_help[i][j] == '%') | |
358 | chr->chr_write(chr, (uint8_t *)ebuf, strlen(ebuf)); | |
359 | else | |
360 | chr->chr_write(chr, (uint8_t *)&mux_help[i][j], 1); | |
361 | } | |
362 | } | |
363 | } | |
364 | ||
365 | static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event) | |
366 | { | |
367 | if (d->chr_event[mux_nr]) | |
368 | d->chr_event[mux_nr](d->ext_opaque[mux_nr], event); | |
369 | } | |
370 | ||
371 | static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch) | |
372 | { | |
373 | if (d->term_got_escape) { | |
374 | d->term_got_escape = 0; | |
375 | if (ch == term_escape_char) | |
376 | goto send_char; | |
377 | switch(ch) { | |
378 | case '?': | |
379 | case 'h': | |
380 | mux_print_help(chr); | |
381 | break; | |
382 | case 'x': | |
383 | { | |
384 | const char *term = "QEMU: Terminated\n\r"; | |
385 | chr->chr_write(chr,(uint8_t *)term,strlen(term)); | |
386 | exit(0); | |
387 | break; | |
388 | } | |
389 | case 's': | |
390 | bdrv_commit_all(); | |
391 | break; | |
392 | case 'b': | |
393 | qemu_chr_be_event(chr, CHR_EVENT_BREAK); | |
394 | break; | |
395 | case 'c': | |
396 | /* Switch to the next registered device */ | |
397 | mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT); | |
398 | d->focus++; | |
399 | if (d->focus >= d->mux_cnt) | |
400 | d->focus = 0; | |
401 | mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN); | |
402 | break; | |
403 | case 't': | |
404 | d->timestamps = !d->timestamps; | |
405 | d->timestamps_start = -1; | |
406 | d->linestart = 0; | |
407 | break; | |
408 | } | |
409 | } else if (ch == term_escape_char) { | |
410 | d->term_got_escape = 1; | |
411 | } else { | |
412 | send_char: | |
413 | return 1; | |
414 | } | |
415 | return 0; | |
416 | } | |
417 | ||
418 | static void mux_chr_accept_input(CharDriverState *chr) | |
419 | { | |
420 | MuxDriver *d = chr->opaque; | |
421 | int m = d->focus; | |
422 | ||
423 | while (d->prod[m] != d->cons[m] && | |
424 | d->chr_can_read[m] && | |
425 | d->chr_can_read[m](d->ext_opaque[m])) { | |
426 | d->chr_read[m](d->ext_opaque[m], | |
427 | &d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1); | |
428 | } | |
429 | } | |
430 | ||
431 | static int mux_chr_can_read(void *opaque) | |
432 | { | |
433 | CharDriverState *chr = opaque; | |
434 | MuxDriver *d = chr->opaque; | |
435 | int m = d->focus; | |
436 | ||
437 | if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE) | |
438 | return 1; | |
439 | if (d->chr_can_read[m]) | |
440 | return d->chr_can_read[m](d->ext_opaque[m]); | |
441 | return 0; | |
442 | } | |
443 | ||
444 | static void mux_chr_read(void *opaque, const uint8_t *buf, int size) | |
445 | { | |
446 | CharDriverState *chr = opaque; | |
447 | MuxDriver *d = chr->opaque; | |
448 | int m = d->focus; | |
449 | int i; | |
450 | ||
451 | mux_chr_accept_input (opaque); | |
452 | ||
453 | for(i = 0; i < size; i++) | |
454 | if (mux_proc_byte(chr, d, buf[i])) { | |
455 | if (d->prod[m] == d->cons[m] && | |
456 | d->chr_can_read[m] && | |
457 | d->chr_can_read[m](d->ext_opaque[m])) | |
458 | d->chr_read[m](d->ext_opaque[m], &buf[i], 1); | |
459 | else | |
460 | d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i]; | |
461 | } | |
462 | } | |
463 | ||
464 | static void mux_chr_event(void *opaque, int event) | |
465 | { | |
466 | CharDriverState *chr = opaque; | |
467 | MuxDriver *d = chr->opaque; | |
468 | int i; | |
469 | ||
470 | /* Send the event to all registered listeners */ | |
471 | for (i = 0; i < d->mux_cnt; i++) | |
472 | mux_chr_send_event(d, i, event); | |
473 | } | |
474 | ||
475 | static void mux_chr_update_read_handler(CharDriverState *chr) | |
476 | { | |
477 | MuxDriver *d = chr->opaque; | |
478 | ||
479 | if (d->mux_cnt >= MAX_MUX) { | |
480 | fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n"); | |
481 | return; | |
482 | } | |
483 | d->ext_opaque[d->mux_cnt] = chr->handler_opaque; | |
484 | d->chr_can_read[d->mux_cnt] = chr->chr_can_read; | |
485 | d->chr_read[d->mux_cnt] = chr->chr_read; | |
486 | d->chr_event[d->mux_cnt] = chr->chr_event; | |
487 | /* Fix up the real driver with mux routines */ | |
488 | if (d->mux_cnt == 0) { | |
489 | qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read, | |
490 | mux_chr_event, chr); | |
491 | } | |
492 | if (d->focus != -1) { | |
493 | mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT); | |
494 | } | |
495 | d->focus = d->mux_cnt; | |
496 | d->mux_cnt++; | |
497 | mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN); | |
498 | } | |
499 | ||
500 | static CharDriverState *qemu_chr_open_mux(CharDriverState *drv) | |
501 | { | |
502 | CharDriverState *chr; | |
503 | MuxDriver *d; | |
504 | ||
505 | chr = g_malloc0(sizeof(CharDriverState)); | |
506 | d = g_malloc0(sizeof(MuxDriver)); | |
507 | ||
508 | chr->opaque = d; | |
509 | d->drv = drv; | |
510 | d->focus = -1; | |
511 | chr->chr_write = mux_chr_write; | |
512 | chr->chr_update_read_handler = mux_chr_update_read_handler; | |
513 | chr->chr_accept_input = mux_chr_accept_input; | |
514 | /* Frontend guest-open / -close notification is not support with muxes */ | |
515 | chr->chr_set_fe_open = NULL; | |
516 | ||
517 | /* Muxes are always open on creation */ | |
518 | qemu_chr_be_generic_open(chr); | |
519 | ||
520 | return chr; | |
521 | } | |
522 | ||
523 | ||
524 | #ifdef _WIN32 | |
525 | int send_all(int fd, const void *buf, int len1) | |
526 | { | |
527 | int ret, len; | |
528 | ||
529 | len = len1; | |
530 | while (len > 0) { | |
531 | ret = send(fd, buf, len, 0); | |
532 | if (ret < 0) { | |
533 | errno = WSAGetLastError(); | |
534 | if (errno != WSAEWOULDBLOCK) { | |
535 | return -1; | |
536 | } | |
537 | } else if (ret == 0) { | |
538 | break; | |
539 | } else { | |
540 | buf += ret; | |
541 | len -= ret; | |
542 | } | |
543 | } | |
544 | return len1 - len; | |
545 | } | |
546 | ||
547 | #else | |
548 | ||
549 | int send_all(int fd, const void *_buf, int len1) | |
550 | { | |
551 | int ret, len; | |
552 | const uint8_t *buf = _buf; | |
553 | ||
554 | len = len1; | |
555 | while (len > 0) { | |
556 | ret = write(fd, buf, len); | |
557 | if (ret < 0) { | |
558 | if (errno != EINTR && errno != EAGAIN) | |
559 | return -1; | |
560 | } else if (ret == 0) { | |
561 | break; | |
562 | } else { | |
563 | buf += ret; | |
564 | len -= ret; | |
565 | } | |
566 | } | |
567 | return len1 - len; | |
568 | } | |
569 | ||
570 | int recv_all(int fd, void *_buf, int len1, bool single_read) | |
571 | { | |
572 | int ret, len; | |
573 | uint8_t *buf = _buf; | |
574 | ||
575 | len = len1; | |
576 | while ((len > 0) && (ret = read(fd, buf, len)) != 0) { | |
577 | if (ret < 0) { | |
578 | if (errno != EINTR && errno != EAGAIN) { | |
579 | return -1; | |
580 | } | |
581 | continue; | |
582 | } else { | |
583 | if (single_read) { | |
584 | return ret; | |
585 | } | |
586 | buf += ret; | |
587 | len -= ret; | |
588 | } | |
589 | } | |
590 | return len1 - len; | |
591 | } | |
592 | ||
593 | #endif /* !_WIN32 */ | |
594 | ||
595 | typedef struct IOWatchPoll | |
596 | { | |
597 | GSource parent; | |
598 | ||
599 | GIOChannel *channel; | |
600 | GSource *src; | |
601 | ||
602 | IOCanReadHandler *fd_can_read; | |
603 | GSourceFunc fd_read; | |
604 | void *opaque; | |
605 | } IOWatchPoll; | |
606 | ||
607 | static IOWatchPoll *io_watch_poll_from_source(GSource *source) | |
608 | { | |
609 | return container_of(source, IOWatchPoll, parent); | |
610 | } | |
611 | ||
612 | static gboolean io_watch_poll_prepare(GSource *source, gint *timeout_) | |
613 | { | |
614 | IOWatchPoll *iwp = io_watch_poll_from_source(source); | |
615 | bool now_active = iwp->fd_can_read(iwp->opaque) > 0; | |
616 | bool was_active = iwp->src != NULL; | |
617 | if (was_active == now_active) { | |
618 | return FALSE; | |
619 | } | |
620 | ||
621 | if (now_active) { | |
622 | iwp->src = g_io_create_watch(iwp->channel, G_IO_IN | G_IO_ERR | G_IO_HUP); | |
623 | g_source_set_callback(iwp->src, iwp->fd_read, iwp->opaque, NULL); | |
624 | g_source_attach(iwp->src, NULL); | |
625 | } else { | |
626 | g_source_destroy(iwp->src); | |
627 | g_source_unref(iwp->src); | |
628 | iwp->src = NULL; | |
629 | } | |
630 | return FALSE; | |
631 | } | |
632 | ||
633 | static gboolean io_watch_poll_check(GSource *source) | |
634 | { | |
635 | return FALSE; | |
636 | } | |
637 | ||
638 | static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback, | |
639 | gpointer user_data) | |
640 | { | |
641 | abort(); | |
642 | } | |
643 | ||
644 | static void io_watch_poll_finalize(GSource *source) | |
645 | { | |
646 | IOWatchPoll *iwp = io_watch_poll_from_source(source); | |
647 | if (iwp->src) { | |
648 | g_source_destroy(iwp->src); | |
649 | g_source_unref(iwp->src); | |
650 | iwp->src = NULL; | |
651 | } | |
652 | } | |
653 | ||
654 | static GSourceFuncs io_watch_poll_funcs = { | |
655 | .prepare = io_watch_poll_prepare, | |
656 | .check = io_watch_poll_check, | |
657 | .dispatch = io_watch_poll_dispatch, | |
658 | .finalize = io_watch_poll_finalize, | |
659 | }; | |
660 | ||
661 | /* Can only be used for read */ | |
662 | static guint io_add_watch_poll(GIOChannel *channel, | |
663 | IOCanReadHandler *fd_can_read, | |
664 | GIOFunc fd_read, | |
665 | gpointer user_data) | |
666 | { | |
667 | IOWatchPoll *iwp; | |
668 | int tag; | |
669 | ||
670 | iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs, sizeof(IOWatchPoll)); | |
671 | iwp->fd_can_read = fd_can_read; | |
672 | iwp->opaque = user_data; | |
673 | iwp->channel = channel; | |
674 | iwp->fd_read = (GSourceFunc) fd_read; | |
675 | iwp->src = NULL; | |
676 | ||
677 | tag = g_source_attach(&iwp->parent, NULL); | |
678 | g_source_unref(&iwp->parent); | |
679 | return tag; | |
680 | } | |
681 | ||
682 | #ifndef _WIN32 | |
683 | static GIOChannel *io_channel_from_fd(int fd) | |
684 | { | |
685 | GIOChannel *chan; | |
686 | ||
687 | if (fd == -1) { | |
688 | return NULL; | |
689 | } | |
690 | ||
691 | chan = g_io_channel_unix_new(fd); | |
692 | ||
693 | g_io_channel_set_encoding(chan, NULL, NULL); | |
694 | g_io_channel_set_buffered(chan, FALSE); | |
695 | ||
696 | return chan; | |
697 | } | |
698 | #endif | |
699 | ||
700 | static GIOChannel *io_channel_from_socket(int fd) | |
701 | { | |
702 | GIOChannel *chan; | |
703 | ||
704 | if (fd == -1) { | |
705 | return NULL; | |
706 | } | |
707 | ||
708 | #ifdef _WIN32 | |
709 | chan = g_io_channel_win32_new_socket(fd); | |
710 | #else | |
711 | chan = g_io_channel_unix_new(fd); | |
712 | #endif | |
713 | ||
714 | g_io_channel_set_encoding(chan, NULL, NULL); | |
715 | g_io_channel_set_buffered(chan, FALSE); | |
716 | ||
717 | return chan; | |
718 | } | |
719 | ||
720 | static int io_channel_send(GIOChannel *fd, const void *buf, size_t len) | |
721 | { | |
722 | GIOStatus status; | |
723 | size_t offset; | |
724 | ||
725 | offset = 0; | |
726 | while (offset < len) { | |
727 | gsize bytes_written; | |
728 | ||
729 | status = g_io_channel_write_chars(fd, buf + offset, len - offset, | |
730 | &bytes_written, NULL); | |
731 | if (status != G_IO_STATUS_NORMAL) { | |
732 | if (status == G_IO_STATUS_AGAIN) { | |
733 | /* If we've written any data, return a partial write. */ | |
734 | if (offset) { | |
735 | break; | |
736 | } | |
737 | errno = EAGAIN; | |
738 | } else { | |
739 | errno = EINVAL; | |
740 | } | |
741 | ||
742 | return -1; | |
743 | } else if (status == G_IO_STATUS_EOF) { | |
744 | break; | |
745 | } | |
746 | ||
747 | offset += bytes_written; | |
748 | } | |
749 | ||
750 | return offset; | |
751 | } | |
752 | ||
753 | #ifndef _WIN32 | |
754 | ||
755 | typedef struct FDCharDriver { | |
756 | CharDriverState *chr; | |
757 | GIOChannel *fd_in, *fd_out; | |
758 | guint fd_in_tag; | |
759 | int max_size; | |
760 | QTAILQ_ENTRY(FDCharDriver) node; | |
761 | } FDCharDriver; | |
762 | ||
763 | static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len) | |
764 | { | |
765 | FDCharDriver *s = chr->opaque; | |
766 | ||
767 | return io_channel_send(s->fd_out, buf, len); | |
768 | } | |
769 | ||
770 | static gboolean fd_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque) | |
771 | { | |
772 | CharDriverState *chr = opaque; | |
773 | FDCharDriver *s = chr->opaque; | |
774 | int len; | |
775 | uint8_t buf[READ_BUF_LEN]; | |
776 | GIOStatus status; | |
777 | gsize bytes_read; | |
778 | ||
779 | len = sizeof(buf); | |
780 | if (len > s->max_size) { | |
781 | len = s->max_size; | |
782 | } | |
783 | if (len == 0) { | |
784 | return FALSE; | |
785 | } | |
786 | ||
787 | status = g_io_channel_read_chars(chan, (gchar *)buf, | |
788 | len, &bytes_read, NULL); | |
789 | if (status == G_IO_STATUS_EOF) { | |
790 | qemu_chr_be_event(chr, CHR_EVENT_CLOSED); | |
791 | return FALSE; | |
792 | } | |
793 | if (status == G_IO_STATUS_NORMAL) { | |
794 | qemu_chr_be_write(chr, buf, bytes_read); | |
795 | } | |
796 | ||
797 | return TRUE; | |
798 | } | |
799 | ||
800 | static int fd_chr_read_poll(void *opaque) | |
801 | { | |
802 | CharDriverState *chr = opaque; | |
803 | FDCharDriver *s = chr->opaque; | |
804 | ||
805 | s->max_size = qemu_chr_be_can_write(chr); | |
806 | return s->max_size; | |
807 | } | |
808 | ||
809 | static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond) | |
810 | { | |
811 | FDCharDriver *s = chr->opaque; | |
812 | return g_io_create_watch(s->fd_out, cond); | |
813 | } | |
814 | ||
815 | static void fd_chr_update_read_handler(CharDriverState *chr) | |
816 | { | |
817 | FDCharDriver *s = chr->opaque; | |
818 | ||
819 | if (s->fd_in_tag) { | |
820 | g_source_remove(s->fd_in_tag); | |
821 | s->fd_in_tag = 0; | |
822 | } | |
823 | ||
824 | if (s->fd_in) { | |
825 | s->fd_in_tag = io_add_watch_poll(s->fd_in, fd_chr_read_poll, fd_chr_read, chr); | |
826 | } | |
827 | } | |
828 | ||
829 | static void fd_chr_close(struct CharDriverState *chr) | |
830 | { | |
831 | FDCharDriver *s = chr->opaque; | |
832 | ||
833 | if (s->fd_in_tag) { | |
834 | g_source_remove(s->fd_in_tag); | |
835 | s->fd_in_tag = 0; | |
836 | } | |
837 | ||
838 | if (s->fd_in) { | |
839 | g_io_channel_unref(s->fd_in); | |
840 | } | |
841 | if (s->fd_out) { | |
842 | g_io_channel_unref(s->fd_out); | |
843 | } | |
844 | ||
845 | g_free(s); | |
846 | qemu_chr_be_event(chr, CHR_EVENT_CLOSED); | |
847 | } | |
848 | ||
849 | /* open a character device to a unix fd */ | |
850 | static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out) | |
851 | { | |
852 | CharDriverState *chr; | |
853 | FDCharDriver *s; | |
854 | ||
855 | chr = g_malloc0(sizeof(CharDriverState)); | |
856 | s = g_malloc0(sizeof(FDCharDriver)); | |
857 | s->fd_in = io_channel_from_fd(fd_in); | |
858 | s->fd_out = io_channel_from_fd(fd_out); | |
859 | fcntl(fd_out, F_SETFL, O_NONBLOCK); | |
860 | s->chr = chr; | |
861 | chr->opaque = s; | |
862 | chr->chr_add_watch = fd_chr_add_watch; | |
863 | chr->chr_write = fd_chr_write; | |
864 | chr->chr_update_read_handler = fd_chr_update_read_handler; | |
865 | chr->chr_close = fd_chr_close; | |
866 | ||
867 | qemu_chr_be_generic_open(chr); | |
868 | ||
869 | return chr; | |
870 | } | |
871 | ||
872 | static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts) | |
873 | { | |
874 | int fd_in, fd_out; | |
875 | char filename_in[256], filename_out[256]; | |
876 | const char *filename = opts->device; | |
877 | ||
878 | if (filename == NULL) { | |
879 | fprintf(stderr, "chardev: pipe: no filename given\n"); | |
880 | return NULL; | |
881 | } | |
882 | ||
883 | snprintf(filename_in, 256, "%s.in", filename); | |
884 | snprintf(filename_out, 256, "%s.out", filename); | |
885 | TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY)); | |
886 | TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY)); | |
887 | if (fd_in < 0 || fd_out < 0) { | |
888 | if (fd_in >= 0) | |
889 | close(fd_in); | |
890 | if (fd_out >= 0) | |
891 | close(fd_out); | |
892 | TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY)); | |
893 | if (fd_in < 0) { | |
894 | return NULL; | |
895 | } | |
896 | } | |
897 | return qemu_chr_open_fd(fd_in, fd_out); | |
898 | } | |
899 | ||
900 | /* init terminal so that we can grab keys */ | |
901 | static struct termios oldtty; | |
902 | static int old_fd0_flags; | |
903 | static bool stdio_allow_signal; | |
904 | ||
905 | static void term_exit(void) | |
906 | { | |
907 | tcsetattr (0, TCSANOW, &oldtty); | |
908 | fcntl(0, F_SETFL, old_fd0_flags); | |
909 | } | |
910 | ||
911 | static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo) | |
912 | { | |
913 | struct termios tty; | |
914 | ||
915 | tty = oldtty; | |
916 | if (!echo) { | |
917 | tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP | |
918 | |INLCR|IGNCR|ICRNL|IXON); | |
919 | tty.c_oflag |= OPOST; | |
920 | tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN); | |
921 | tty.c_cflag &= ~(CSIZE|PARENB); | |
922 | tty.c_cflag |= CS8; | |
923 | tty.c_cc[VMIN] = 1; | |
924 | tty.c_cc[VTIME] = 0; | |
925 | } | |
926 | /* if graphical mode, we allow Ctrl-C handling */ | |
927 | if (!stdio_allow_signal) | |
928 | tty.c_lflag &= ~ISIG; | |
929 | ||
930 | tcsetattr (0, TCSANOW, &tty); | |
931 | } | |
932 | ||
933 | static void qemu_chr_close_stdio(struct CharDriverState *chr) | |
934 | { | |
935 | term_exit(); | |
936 | fd_chr_close(chr); | |
937 | } | |
938 | ||
939 | static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts) | |
940 | { | |
941 | CharDriverState *chr; | |
942 | ||
943 | if (is_daemonized()) { | |
944 | error_report("cannot use stdio with -daemonize"); | |
945 | return NULL; | |
946 | } | |
947 | old_fd0_flags = fcntl(0, F_GETFL); | |
948 | tcgetattr (0, &oldtty); | |
949 | fcntl(0, F_SETFL, O_NONBLOCK); | |
950 | atexit(term_exit); | |
951 | ||
952 | chr = qemu_chr_open_fd(0, 1); | |
953 | chr->chr_close = qemu_chr_close_stdio; | |
954 | chr->chr_set_echo = qemu_chr_set_echo_stdio; | |
955 | stdio_allow_signal = display_type != DT_NOGRAPHIC; | |
956 | if (opts->has_signal) { | |
957 | stdio_allow_signal = opts->signal; | |
958 | } | |
959 | qemu_chr_fe_set_echo(chr, false); | |
960 | ||
961 | return chr; | |
962 | } | |
963 | ||
964 | #ifdef __sun__ | |
965 | /* Once Solaris has openpty(), this is going to be removed. */ | |
966 | static int openpty(int *amaster, int *aslave, char *name, | |
967 | struct termios *termp, struct winsize *winp) | |
968 | { | |
969 | const char *slave; | |
970 | int mfd = -1, sfd = -1; | |
971 | ||
972 | *amaster = *aslave = -1; | |
973 | ||
974 | mfd = open("/dev/ptmx", O_RDWR | O_NOCTTY); | |
975 | if (mfd < 0) | |
976 | goto err; | |
977 | ||
978 | if (grantpt(mfd) == -1 || unlockpt(mfd) == -1) | |
979 | goto err; | |
980 | ||
981 | if ((slave = ptsname(mfd)) == NULL) | |
982 | goto err; | |
983 | ||
984 | if ((sfd = open(slave, O_RDONLY | O_NOCTTY)) == -1) | |
985 | goto err; | |
986 | ||
987 | if (ioctl(sfd, I_PUSH, "ptem") == -1 || | |
988 | (termp != NULL && tcgetattr(sfd, termp) < 0)) | |
989 | goto err; | |
990 | ||
991 | if (amaster) | |
992 | *amaster = mfd; | |
993 | if (aslave) | |
994 | *aslave = sfd; | |
995 | if (winp) | |
996 | ioctl(sfd, TIOCSWINSZ, winp); | |
997 | ||
998 | return 0; | |
999 | ||
1000 | err: | |
1001 | if (sfd != -1) | |
1002 | close(sfd); | |
1003 | close(mfd); | |
1004 | return -1; | |
1005 | } | |
1006 | ||
1007 | static void cfmakeraw (struct termios *termios_p) | |
1008 | { | |
1009 | termios_p->c_iflag &= | |
1010 | ~(IGNBRK|BRKINT|PARMRK|ISTRIP|INLCR|IGNCR|ICRNL|IXON); | |
1011 | termios_p->c_oflag &= ~OPOST; | |
1012 | termios_p->c_lflag &= ~(ECHO|ECHONL|ICANON|ISIG|IEXTEN); | |
1013 | termios_p->c_cflag &= ~(CSIZE|PARENB); | |
1014 | termios_p->c_cflag |= CS8; | |
1015 | ||
1016 | termios_p->c_cc[VMIN] = 0; | |
1017 | termios_p->c_cc[VTIME] = 0; | |
1018 | } | |
1019 | #endif | |
1020 | ||
1021 | #if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \ | |
1022 | || defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \ | |
1023 | || defined(__GLIBC__) | |
1024 | ||
1025 | #define HAVE_CHARDEV_TTY 1 | |
1026 | ||
1027 | typedef struct { | |
1028 | GIOChannel *fd; | |
1029 | guint fd_tag; | |
1030 | int connected; | |
1031 | int polling; | |
1032 | int read_bytes; | |
1033 | guint timer_tag; | |
1034 | } PtyCharDriver; | |
1035 | ||
1036 | static void pty_chr_update_read_handler(CharDriverState *chr); | |
1037 | static void pty_chr_state(CharDriverState *chr, int connected); | |
1038 | ||
1039 | static gboolean pty_chr_timer(gpointer opaque) | |
1040 | { | |
1041 | struct CharDriverState *chr = opaque; | |
1042 | PtyCharDriver *s = chr->opaque; | |
1043 | ||
1044 | if (s->connected) { | |
1045 | goto out; | |
1046 | } | |
1047 | if (s->polling) { | |
1048 | /* If we arrive here without polling being cleared due | |
1049 | * read returning -EIO, then we are (re-)connected */ | |
1050 | pty_chr_state(chr, 1); | |
1051 | goto out; | |
1052 | } | |
1053 | ||
1054 | /* Next poll ... */ | |
1055 | pty_chr_update_read_handler(chr); | |
1056 | ||
1057 | out: | |
1058 | return FALSE; | |
1059 | } | |
1060 | ||
1061 | static void pty_chr_rearm_timer(CharDriverState *chr, int ms) | |
1062 | { | |
1063 | PtyCharDriver *s = chr->opaque; | |
1064 | ||
1065 | if (s->timer_tag) { | |
1066 | g_source_remove(s->timer_tag); | |
1067 | s->timer_tag = 0; | |
1068 | } | |
1069 | ||
1070 | if (ms == 1000) { | |
1071 | s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr); | |
1072 | } else { | |
1073 | s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr); | |
1074 | } | |
1075 | } | |
1076 | ||
1077 | static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len) | |
1078 | { | |
1079 | PtyCharDriver *s = chr->opaque; | |
1080 | ||
1081 | if (!s->connected) { | |
1082 | /* guest sends data, check for (re-)connect */ | |
1083 | pty_chr_update_read_handler(chr); | |
1084 | return 0; | |
1085 | } | |
1086 | return io_channel_send(s->fd, buf, len); | |
1087 | } | |
1088 | ||
1089 | static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond) | |
1090 | { | |
1091 | PtyCharDriver *s = chr->opaque; | |
1092 | return g_io_create_watch(s->fd, cond); | |
1093 | } | |
1094 | ||
1095 | static int pty_chr_read_poll(void *opaque) | |
1096 | { | |
1097 | CharDriverState *chr = opaque; | |
1098 | PtyCharDriver *s = chr->opaque; | |
1099 | ||
1100 | s->read_bytes = qemu_chr_be_can_write(chr); | |
1101 | return s->read_bytes; | |
1102 | } | |
1103 | ||
1104 | static gboolean pty_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque) | |
1105 | { | |
1106 | CharDriverState *chr = opaque; | |
1107 | PtyCharDriver *s = chr->opaque; | |
1108 | gsize size, len; | |
1109 | uint8_t buf[READ_BUF_LEN]; | |
1110 | GIOStatus status; | |
1111 | ||
1112 | len = sizeof(buf); | |
1113 | if (len > s->read_bytes) | |
1114 | len = s->read_bytes; | |
1115 | if (len == 0) | |
1116 | return FALSE; | |
1117 | status = g_io_channel_read_chars(s->fd, (gchar *)buf, len, &size, NULL); | |
1118 | if (status != G_IO_STATUS_NORMAL) { | |
1119 | pty_chr_state(chr, 0); | |
1120 | return FALSE; | |
1121 | } else { | |
1122 | pty_chr_state(chr, 1); | |
1123 | qemu_chr_be_write(chr, buf, size); | |
1124 | } | |
1125 | return TRUE; | |
1126 | } | |
1127 | ||
1128 | static void pty_chr_update_read_handler(CharDriverState *chr) | |
1129 | { | |
1130 | PtyCharDriver *s = chr->opaque; | |
1131 | ||
1132 | if (s->fd_tag) { | |
1133 | g_source_remove(s->fd_tag); | |
1134 | } | |
1135 | ||
1136 | s->fd_tag = io_add_watch_poll(s->fd, pty_chr_read_poll, pty_chr_read, chr); | |
1137 | s->polling = 1; | |
1138 | /* | |
1139 | * Short timeout here: just need wait long enougth that qemu makes | |
1140 | * it through the poll loop once. When reconnected we want a | |
1141 | * short timeout so we notice it almost instantly. Otherwise | |
1142 | * read() gives us -EIO instantly, making pty_chr_state() reset the | |
1143 | * timeout to the normal (much longer) poll interval before the | |
1144 | * timer triggers. | |
1145 | */ | |
1146 | pty_chr_rearm_timer(chr, 10); | |
1147 | } | |
1148 | ||
1149 | static void pty_chr_state(CharDriverState *chr, int connected) | |
1150 | { | |
1151 | PtyCharDriver *s = chr->opaque; | |
1152 | ||
1153 | if (!connected) { | |
1154 | if (s->fd_tag) { | |
1155 | g_source_remove(s->fd_tag); | |
1156 | s->fd_tag = 0; | |
1157 | } | |
1158 | s->connected = 0; | |
1159 | s->polling = 0; | |
1160 | /* (re-)connect poll interval for idle guests: once per second. | |
1161 | * We check more frequently in case the guests sends data to | |
1162 | * the virtual device linked to our pty. */ | |
1163 | pty_chr_rearm_timer(chr, 1000); | |
1164 | } else { | |
1165 | if (!s->connected) | |
1166 | qemu_chr_be_generic_open(chr); | |
1167 | s->connected = 1; | |
1168 | } | |
1169 | } | |
1170 | ||
1171 | ||
1172 | static void pty_chr_close(struct CharDriverState *chr) | |
1173 | { | |
1174 | PtyCharDriver *s = chr->opaque; | |
1175 | int fd; | |
1176 | ||
1177 | if (s->fd_tag) { | |
1178 | g_source_remove(s->fd_tag); | |
1179 | s->fd_tag = 0; | |
1180 | } | |
1181 | fd = g_io_channel_unix_get_fd(s->fd); | |
1182 | g_io_channel_unref(s->fd); | |
1183 | close(fd); | |
1184 | if (s->timer_tag) { | |
1185 | g_source_remove(s->timer_tag); | |
1186 | s->timer_tag = 0; | |
1187 | } | |
1188 | g_free(s); | |
1189 | qemu_chr_be_event(chr, CHR_EVENT_CLOSED); | |
1190 | } | |
1191 | ||
1192 | static CharDriverState *qemu_chr_open_pty(const char *id, | |
1193 | ChardevReturn *ret) | |
1194 | { | |
1195 | CharDriverState *chr; | |
1196 | PtyCharDriver *s; | |
1197 | struct termios tty; | |
1198 | int master_fd, slave_fd; | |
1199 | #if defined(__OpenBSD__) || defined(__DragonFly__) | |
1200 | char pty_name[PATH_MAX]; | |
1201 | #define q_ptsname(x) pty_name | |
1202 | #else | |
1203 | char *pty_name = NULL; | |
1204 | #define q_ptsname(x) ptsname(x) | |
1205 | #endif | |
1206 | ||
1207 | if (openpty(&master_fd, &slave_fd, pty_name, NULL, NULL) < 0) { | |
1208 | return NULL; | |
1209 | } | |
1210 | ||
1211 | /* Set raw attributes on the pty. */ | |
1212 | tcgetattr(slave_fd, &tty); | |
1213 | cfmakeraw(&tty); | |
1214 | tcsetattr(slave_fd, TCSAFLUSH, &tty); | |
1215 | close(slave_fd); | |
1216 | ||
1217 | chr = g_malloc0(sizeof(CharDriverState)); | |
1218 | ||
1219 | chr->filename = g_strdup_printf("pty:%s", q_ptsname(master_fd)); | |
1220 | ret->pty = g_strdup(q_ptsname(master_fd)); | |
1221 | ret->has_pty = true; | |
1222 | ||
1223 | fprintf(stderr, "char device redirected to %s (label %s)\n", | |
1224 | q_ptsname(master_fd), id); | |
1225 | ||
1226 | s = g_malloc0(sizeof(PtyCharDriver)); | |
1227 | chr->opaque = s; | |
1228 | chr->chr_write = pty_chr_write; | |
1229 | chr->chr_update_read_handler = pty_chr_update_read_handler; | |
1230 | chr->chr_close = pty_chr_close; | |
1231 | chr->chr_add_watch = pty_chr_add_watch; | |
1232 | ||
1233 | s->fd = io_channel_from_fd(master_fd); | |
1234 | s->timer_tag = 0; | |
1235 | ||
1236 | return chr; | |
1237 | } | |
1238 | ||
1239 | static void tty_serial_init(int fd, int speed, | |
1240 | int parity, int data_bits, int stop_bits) | |
1241 | { | |
1242 | struct termios tty; | |
1243 | speed_t spd; | |
1244 | ||
1245 | #if 0 | |
1246 | printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n", | |
1247 | speed, parity, data_bits, stop_bits); | |
1248 | #endif | |
1249 | tcgetattr (fd, &tty); | |
1250 | ||
1251 | #define check_speed(val) if (speed <= val) { spd = B##val; break; } | |
1252 | speed = speed * 10 / 11; | |
1253 | do { | |
1254 | check_speed(50); | |
1255 | check_speed(75); | |
1256 | check_speed(110); | |
1257 | check_speed(134); | |
1258 | check_speed(150); | |
1259 | check_speed(200); | |
1260 | check_speed(300); | |
1261 | check_speed(600); | |
1262 | check_speed(1200); | |
1263 | check_speed(1800); | |
1264 | check_speed(2400); | |
1265 | check_speed(4800); | |
1266 | check_speed(9600); | |
1267 | check_speed(19200); | |
1268 | check_speed(38400); | |
1269 | /* Non-Posix values follow. They may be unsupported on some systems. */ | |
1270 | check_speed(57600); | |
1271 | check_speed(115200); | |
1272 | #ifdef B230400 | |
1273 | check_speed(230400); | |
1274 | #endif | |
1275 | #ifdef B460800 | |
1276 | check_speed(460800); | |
1277 | #endif | |
1278 | #ifdef B500000 | |
1279 | check_speed(500000); | |
1280 | #endif | |
1281 | #ifdef B576000 | |
1282 | check_speed(576000); | |
1283 | #endif | |
1284 | #ifdef B921600 | |
1285 | check_speed(921600); | |
1286 | #endif | |
1287 | #ifdef B1000000 | |
1288 | check_speed(1000000); | |
1289 | #endif | |
1290 | #ifdef B1152000 | |
1291 | check_speed(1152000); | |
1292 | #endif | |
1293 | #ifdef B1500000 | |
1294 | check_speed(1500000); | |
1295 | #endif | |
1296 | #ifdef B2000000 | |
1297 | check_speed(2000000); | |
1298 | #endif | |
1299 | #ifdef B2500000 | |
1300 | check_speed(2500000); | |
1301 | #endif | |
1302 | #ifdef B3000000 | |
1303 | check_speed(3000000); | |
1304 | #endif | |
1305 | #ifdef B3500000 | |
1306 | check_speed(3500000); | |
1307 | #endif | |
1308 | #ifdef B4000000 | |
1309 | check_speed(4000000); | |
1310 | #endif | |
1311 | spd = B115200; | |
1312 | } while (0); | |
1313 | ||
1314 | cfsetispeed(&tty, spd); | |
1315 | cfsetospeed(&tty, spd); | |
1316 | ||
1317 | tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP | |
1318 | |INLCR|IGNCR|ICRNL|IXON); | |
1319 | tty.c_oflag |= OPOST; | |
1320 | tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG); | |
1321 | tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB); | |
1322 | switch(data_bits) { | |
1323 | default: | |
1324 | case 8: | |
1325 | tty.c_cflag |= CS8; | |
1326 | break; | |
1327 | case 7: | |
1328 | tty.c_cflag |= CS7; | |
1329 | break; | |
1330 | case 6: | |
1331 | tty.c_cflag |= CS6; | |
1332 | break; | |
1333 | case 5: | |
1334 | tty.c_cflag |= CS5; | |
1335 | break; | |
1336 | } | |
1337 | switch(parity) { | |
1338 | default: | |
1339 | case 'N': | |
1340 | break; | |
1341 | case 'E': | |
1342 | tty.c_cflag |= PARENB; | |
1343 | break; | |
1344 | case 'O': | |
1345 | tty.c_cflag |= PARENB | PARODD; | |
1346 | break; | |
1347 | } | |
1348 | if (stop_bits == 2) | |
1349 | tty.c_cflag |= CSTOPB; | |
1350 | ||
1351 | tcsetattr (fd, TCSANOW, &tty); | |
1352 | } | |
1353 | ||
1354 | static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg) | |
1355 | { | |
1356 | FDCharDriver *s = chr->opaque; | |
1357 | ||
1358 | switch(cmd) { | |
1359 | case CHR_IOCTL_SERIAL_SET_PARAMS: | |
1360 | { | |
1361 | QEMUSerialSetParams *ssp = arg; | |
1362 | tty_serial_init(g_io_channel_unix_get_fd(s->fd_in), | |
1363 | ssp->speed, ssp->parity, | |
1364 | ssp->data_bits, ssp->stop_bits); | |
1365 | } | |
1366 | break; | |
1367 | case CHR_IOCTL_SERIAL_SET_BREAK: | |
1368 | { | |
1369 | int enable = *(int *)arg; | |
1370 | if (enable) { | |
1371 | tcsendbreak(g_io_channel_unix_get_fd(s->fd_in), 1); | |
1372 | } | |
1373 | } | |
1374 | break; | |
1375 | case CHR_IOCTL_SERIAL_GET_TIOCM: | |
1376 | { | |
1377 | int sarg = 0; | |
1378 | int *targ = (int *)arg; | |
1379 | ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &sarg); | |
1380 | *targ = 0; | |
1381 | if (sarg & TIOCM_CTS) | |
1382 | *targ |= CHR_TIOCM_CTS; | |
1383 | if (sarg & TIOCM_CAR) | |
1384 | *targ |= CHR_TIOCM_CAR; | |
1385 | if (sarg & TIOCM_DSR) | |
1386 | *targ |= CHR_TIOCM_DSR; | |
1387 | if (sarg & TIOCM_RI) | |
1388 | *targ |= CHR_TIOCM_RI; | |
1389 | if (sarg & TIOCM_DTR) | |
1390 | *targ |= CHR_TIOCM_DTR; | |
1391 | if (sarg & TIOCM_RTS) | |
1392 | *targ |= CHR_TIOCM_RTS; | |
1393 | } | |
1394 | break; | |
1395 | case CHR_IOCTL_SERIAL_SET_TIOCM: | |
1396 | { | |
1397 | int sarg = *(int *)arg; | |
1398 | int targ = 0; | |
1399 | ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &targ); | |
1400 | targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR | |
1401 | | CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS); | |
1402 | if (sarg & CHR_TIOCM_CTS) | |
1403 | targ |= TIOCM_CTS; | |
1404 | if (sarg & CHR_TIOCM_CAR) | |
1405 | targ |= TIOCM_CAR; | |
1406 | if (sarg & CHR_TIOCM_DSR) | |
1407 | targ |= TIOCM_DSR; | |
1408 | if (sarg & CHR_TIOCM_RI) | |
1409 | targ |= TIOCM_RI; | |
1410 | if (sarg & CHR_TIOCM_DTR) | |
1411 | targ |= TIOCM_DTR; | |
1412 | if (sarg & CHR_TIOCM_RTS) | |
1413 | targ |= TIOCM_RTS; | |
1414 | ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMSET, &targ); | |
1415 | } | |
1416 | break; | |
1417 | default: | |
1418 | return -ENOTSUP; | |
1419 | } | |
1420 | return 0; | |
1421 | } | |
1422 | ||
1423 | static void qemu_chr_close_tty(CharDriverState *chr) | |
1424 | { | |
1425 | FDCharDriver *s = chr->opaque; | |
1426 | int fd = -1; | |
1427 | ||
1428 | if (s) { | |
1429 | fd = g_io_channel_unix_get_fd(s->fd_in); | |
1430 | } | |
1431 | ||
1432 | fd_chr_close(chr); | |
1433 | ||
1434 | if (fd >= 0) { | |
1435 | close(fd); | |
1436 | } | |
1437 | } | |
1438 | ||
1439 | static CharDriverState *qemu_chr_open_tty_fd(int fd) | |
1440 | { | |
1441 | CharDriverState *chr; | |
1442 | ||
1443 | tty_serial_init(fd, 115200, 'N', 8, 1); | |
1444 | chr = qemu_chr_open_fd(fd, fd); | |
1445 | chr->chr_ioctl = tty_serial_ioctl; | |
1446 | chr->chr_close = qemu_chr_close_tty; | |
1447 | return chr; | |
1448 | } | |
1449 | #endif /* __linux__ || __sun__ */ | |
1450 | ||
1451 | #if defined(__linux__) | |
1452 | ||
1453 | #define HAVE_CHARDEV_PARPORT 1 | |
1454 | ||
1455 | typedef struct { | |
1456 | int fd; | |
1457 | int mode; | |
1458 | } ParallelCharDriver; | |
1459 | ||
1460 | static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode) | |
1461 | { | |
1462 | if (s->mode != mode) { | |
1463 | int m = mode; | |
1464 | if (ioctl(s->fd, PPSETMODE, &m) < 0) | |
1465 | return 0; | |
1466 | s->mode = mode; | |
1467 | } | |
1468 | return 1; | |
1469 | } | |
1470 | ||
1471 | static int pp_ioctl(CharDriverState *chr, int cmd, void *arg) | |
1472 | { | |
1473 | ParallelCharDriver *drv = chr->opaque; | |
1474 | int fd = drv->fd; | |
1475 | uint8_t b; | |
1476 | ||
1477 | switch(cmd) { | |
1478 | case CHR_IOCTL_PP_READ_DATA: | |
1479 | if (ioctl(fd, PPRDATA, &b) < 0) | |
1480 | return -ENOTSUP; | |
1481 | *(uint8_t *)arg = b; | |
1482 | break; | |
1483 | case CHR_IOCTL_PP_WRITE_DATA: | |
1484 | b = *(uint8_t *)arg; | |
1485 | if (ioctl(fd, PPWDATA, &b) < 0) | |
1486 | return -ENOTSUP; | |
1487 | break; | |
1488 | case CHR_IOCTL_PP_READ_CONTROL: | |
1489 | if (ioctl(fd, PPRCONTROL, &b) < 0) | |
1490 | return -ENOTSUP; | |
1491 | /* Linux gives only the lowest bits, and no way to know data | |
1492 | direction! For better compatibility set the fixed upper | |
1493 | bits. */ | |
1494 | *(uint8_t *)arg = b | 0xc0; | |
1495 | break; | |
1496 | case CHR_IOCTL_PP_WRITE_CONTROL: | |
1497 | b = *(uint8_t *)arg; | |
1498 | if (ioctl(fd, PPWCONTROL, &b) < 0) | |
1499 | return -ENOTSUP; | |
1500 | break; | |
1501 | case CHR_IOCTL_PP_READ_STATUS: | |
1502 | if (ioctl(fd, PPRSTATUS, &b) < 0) | |
1503 | return -ENOTSUP; | |
1504 | *(uint8_t *)arg = b; | |
1505 | break; | |
1506 | case CHR_IOCTL_PP_DATA_DIR: | |
1507 | if (ioctl(fd, PPDATADIR, (int *)arg) < 0) | |
1508 | return -ENOTSUP; | |
1509 | break; | |
1510 | case CHR_IOCTL_PP_EPP_READ_ADDR: | |
1511 | if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) { | |
1512 | struct ParallelIOArg *parg = arg; | |
1513 | int n = read(fd, parg->buffer, parg->count); | |
1514 | if (n != parg->count) { | |
1515 | return -EIO; | |
1516 | } | |
1517 | } | |
1518 | break; | |
1519 | case CHR_IOCTL_PP_EPP_READ: | |
1520 | if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) { | |
1521 | struct ParallelIOArg *parg = arg; | |
1522 | int n = read(fd, parg->buffer, parg->count); | |
1523 | if (n != parg->count) { | |
1524 | return -EIO; | |
1525 | } | |
1526 | } | |
1527 | break; | |
1528 | case CHR_IOCTL_PP_EPP_WRITE_ADDR: | |
1529 | if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) { | |
1530 | struct ParallelIOArg *parg = arg; | |
1531 | int n = write(fd, parg->buffer, parg->count); | |
1532 | if (n != parg->count) { | |
1533 | return -EIO; | |
1534 | } | |
1535 | } | |
1536 | break; | |
1537 | case CHR_IOCTL_PP_EPP_WRITE: | |
1538 | if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) { | |
1539 | struct ParallelIOArg *parg = arg; | |
1540 | int n = write(fd, parg->buffer, parg->count); | |
1541 | if (n != parg->count) { | |
1542 | return -EIO; | |
1543 | } | |
1544 | } | |
1545 | break; | |
1546 | default: | |
1547 | return -ENOTSUP; | |
1548 | } | |
1549 | return 0; | |
1550 | } | |
1551 | ||
1552 | static void pp_close(CharDriverState *chr) | |
1553 | { | |
1554 | ParallelCharDriver *drv = chr->opaque; | |
1555 | int fd = drv->fd; | |
1556 | ||
1557 | pp_hw_mode(drv, IEEE1284_MODE_COMPAT); | |
1558 | ioctl(fd, PPRELEASE); | |
1559 | close(fd); | |
1560 | g_free(drv); | |
1561 | qemu_chr_be_event(chr, CHR_EVENT_CLOSED); | |
1562 | } | |
1563 | ||
1564 | static CharDriverState *qemu_chr_open_pp_fd(int fd) | |
1565 | { | |
1566 | CharDriverState *chr; | |
1567 | ParallelCharDriver *drv; | |
1568 | ||
1569 | if (ioctl(fd, PPCLAIM) < 0) { | |
1570 | close(fd); | |
1571 | return NULL; | |
1572 | } | |
1573 | ||
1574 | drv = g_malloc0(sizeof(ParallelCharDriver)); | |
1575 | drv->fd = fd; | |
1576 | drv->mode = IEEE1284_MODE_COMPAT; | |
1577 | ||
1578 | chr = g_malloc0(sizeof(CharDriverState)); | |
1579 | chr->chr_write = null_chr_write; | |
1580 | chr->chr_ioctl = pp_ioctl; | |
1581 | chr->chr_close = pp_close; | |
1582 | chr->opaque = drv; | |
1583 | ||
1584 | qemu_chr_be_generic_open(chr); | |
1585 | ||
1586 | return chr; | |
1587 | } | |
1588 | #endif /* __linux__ */ | |
1589 | ||
1590 | #if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__) | |
1591 | ||
1592 | #define HAVE_CHARDEV_PARPORT 1 | |
1593 | ||
1594 | static int pp_ioctl(CharDriverState *chr, int cmd, void *arg) | |
1595 | { | |
1596 | int fd = (int)(intptr_t)chr->opaque; | |
1597 | uint8_t b; | |
1598 | ||
1599 | switch(cmd) { | |
1600 | case CHR_IOCTL_PP_READ_DATA: | |
1601 | if (ioctl(fd, PPIGDATA, &b) < 0) | |
1602 | return -ENOTSUP; | |
1603 | *(uint8_t *)arg = b; | |
1604 | break; | |
1605 | case CHR_IOCTL_PP_WRITE_DATA: | |
1606 | b = *(uint8_t *)arg; | |
1607 | if (ioctl(fd, PPISDATA, &b) < 0) | |
1608 | return -ENOTSUP; | |
1609 | break; | |
1610 | case CHR_IOCTL_PP_READ_CONTROL: | |
1611 | if (ioctl(fd, PPIGCTRL, &b) < 0) | |
1612 | return -ENOTSUP; | |
1613 | *(uint8_t *)arg = b; | |
1614 | break; | |
1615 | case CHR_IOCTL_PP_WRITE_CONTROL: | |
1616 | b = *(uint8_t *)arg; | |
1617 | if (ioctl(fd, PPISCTRL, &b) < 0) | |
1618 | return -ENOTSUP; | |
1619 | break; | |
1620 | case CHR_IOCTL_PP_READ_STATUS: | |
1621 | if (ioctl(fd, PPIGSTATUS, &b) < 0) | |
1622 | return -ENOTSUP; | |
1623 | *(uint8_t *)arg = b; | |
1624 | break; | |
1625 | default: | |
1626 | return -ENOTSUP; | |
1627 | } | |
1628 | return 0; | |
1629 | } | |
1630 | ||
1631 | static CharDriverState *qemu_chr_open_pp_fd(int fd) | |
1632 | { | |
1633 | CharDriverState *chr; | |
1634 | ||
1635 | chr = g_malloc0(sizeof(CharDriverState)); | |
1636 | chr->opaque = (void *)(intptr_t)fd; | |
1637 | chr->chr_write = null_chr_write; | |
1638 | chr->chr_ioctl = pp_ioctl; | |
1639 | return chr; | |
1640 | } | |
1641 | #endif | |
1642 | ||
1643 | #else /* _WIN32 */ | |
1644 | ||
1645 | typedef struct { | |
1646 | int max_size; | |
1647 | HANDLE hcom, hrecv, hsend; | |
1648 | OVERLAPPED orecv, osend; | |
1649 | BOOL fpipe; | |
1650 | DWORD len; | |
1651 | } WinCharState; | |
1652 | ||
1653 | typedef struct { | |
1654 | HANDLE hStdIn; | |
1655 | HANDLE hInputReadyEvent; | |
1656 | HANDLE hInputDoneEvent; | |
1657 | HANDLE hInputThread; | |
1658 | uint8_t win_stdio_buf; | |
1659 | } WinStdioCharState; | |
1660 | ||
1661 | #define NSENDBUF 2048 | |
1662 | #define NRECVBUF 2048 | |
1663 | #define MAXCONNECT 1 | |
1664 | #define NTIMEOUT 5000 | |
1665 | ||
1666 | static int win_chr_poll(void *opaque); | |
1667 | static int win_chr_pipe_poll(void *opaque); | |
1668 | ||
1669 | static void win_chr_close(CharDriverState *chr) | |
1670 | { | |
1671 | WinCharState *s = chr->opaque; | |
1672 | ||
1673 | if (s->hsend) { | |
1674 | CloseHandle(s->hsend); | |
1675 | s->hsend = NULL; | |
1676 | } | |
1677 | if (s->hrecv) { | |
1678 | CloseHandle(s->hrecv); | |
1679 | s->hrecv = NULL; | |
1680 | } | |
1681 | if (s->hcom) { | |
1682 | CloseHandle(s->hcom); | |
1683 | s->hcom = NULL; | |
1684 | } | |
1685 | if (s->fpipe) | |
1686 | qemu_del_polling_cb(win_chr_pipe_poll, chr); | |
1687 | else | |
1688 | qemu_del_polling_cb(win_chr_poll, chr); | |
1689 | ||
1690 | qemu_chr_be_event(chr, CHR_EVENT_CLOSED); | |
1691 | } | |
1692 | ||
1693 | static int win_chr_init(CharDriverState *chr, const char *filename) | |
1694 | { | |
1695 | WinCharState *s = chr->opaque; | |
1696 | COMMCONFIG comcfg; | |
1697 | COMMTIMEOUTS cto = { 0, 0, 0, 0, 0}; | |
1698 | COMSTAT comstat; | |
1699 | DWORD size; | |
1700 | DWORD err; | |
1701 | ||
1702 | s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL); | |
1703 | if (!s->hsend) { | |
1704 | fprintf(stderr, "Failed CreateEvent\n"); | |
1705 | goto fail; | |
1706 | } | |
1707 | s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL); | |
1708 | if (!s->hrecv) { | |
1709 | fprintf(stderr, "Failed CreateEvent\n"); | |
1710 | goto fail; | |
1711 | } | |
1712 | ||
1713 | s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL, | |
1714 | OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0); | |
1715 | if (s->hcom == INVALID_HANDLE_VALUE) { | |
1716 | fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError()); | |
1717 | s->hcom = NULL; | |
1718 | goto fail; | |
1719 | } | |
1720 | ||
1721 | if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) { | |
1722 | fprintf(stderr, "Failed SetupComm\n"); | |
1723 | goto fail; | |
1724 | } | |
1725 | ||
1726 | ZeroMemory(&comcfg, sizeof(COMMCONFIG)); | |
1727 | size = sizeof(COMMCONFIG); | |
1728 | GetDefaultCommConfig(filename, &comcfg, &size); | |
1729 | comcfg.dcb.DCBlength = sizeof(DCB); | |
1730 | CommConfigDialog(filename, NULL, &comcfg); | |
1731 | ||
1732 | if (!SetCommState(s->hcom, &comcfg.dcb)) { | |
1733 | fprintf(stderr, "Failed SetCommState\n"); | |
1734 | goto fail; | |
1735 | } | |
1736 | ||
1737 | if (!SetCommMask(s->hcom, EV_ERR)) { | |
1738 | fprintf(stderr, "Failed SetCommMask\n"); | |
1739 | goto fail; | |
1740 | } | |
1741 | ||
1742 | cto.ReadIntervalTimeout = MAXDWORD; | |
1743 | if (!SetCommTimeouts(s->hcom, &cto)) { | |
1744 | fprintf(stderr, "Failed SetCommTimeouts\n"); | |
1745 | goto fail; | |
1746 | } | |
1747 | ||
1748 | if (!ClearCommError(s->hcom, &err, &comstat)) { | |
1749 | fprintf(stderr, "Failed ClearCommError\n"); | |
1750 | goto fail; | |
1751 | } | |
1752 | qemu_add_polling_cb(win_chr_poll, chr); | |
1753 | return 0; | |
1754 | ||
1755 | fail: | |
1756 | win_chr_close(chr); | |
1757 | return -1; | |
1758 | } | |
1759 | ||
1760 | static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1) | |
1761 | { | |
1762 | WinCharState *s = chr->opaque; | |
1763 | DWORD len, ret, size, err; | |
1764 | ||
1765 | len = len1; | |
1766 | ZeroMemory(&s->osend, sizeof(s->osend)); | |
1767 | s->osend.hEvent = s->hsend; | |
1768 | while (len > 0) { | |
1769 | if (s->hsend) | |
1770 | ret = WriteFile(s->hcom, buf, len, &size, &s->osend); | |
1771 | else | |
1772 | ret = WriteFile(s->hcom, buf, len, &size, NULL); | |
1773 | if (!ret) { | |
1774 | err = GetLastError(); | |
1775 | if (err == ERROR_IO_PENDING) { | |
1776 | ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE); | |
1777 | if (ret) { | |
1778 | buf += size; | |
1779 | len -= size; | |
1780 | } else { | |
1781 | break; | |
1782 | } | |
1783 | } else { | |
1784 | break; | |
1785 | } | |
1786 | } else { | |
1787 | buf += size; | |
1788 | len -= size; | |
1789 | } | |
1790 | } | |
1791 | return len1 - len; | |
1792 | } | |
1793 | ||
1794 | static int win_chr_read_poll(CharDriverState *chr) | |
1795 | { | |
1796 | WinCharState *s = chr->opaque; | |
1797 | ||
1798 | s->max_size = qemu_chr_be_can_write(chr); | |
1799 | return s->max_size; | |
1800 | } | |
1801 | ||
1802 | static void win_chr_readfile(CharDriverState *chr) | |
1803 | { | |
1804 | WinCharState *s = chr->opaque; | |
1805 | int ret, err; | |
1806 | uint8_t buf[READ_BUF_LEN]; | |
1807 | DWORD size; | |
1808 | ||
1809 | ZeroMemory(&s->orecv, sizeof(s->orecv)); | |
1810 | s->orecv.hEvent = s->hrecv; | |
1811 | ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv); | |
1812 | if (!ret) { | |
1813 | err = GetLastError(); | |
1814 | if (err == ERROR_IO_PENDING) { | |
1815 | ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE); | |
1816 | } | |
1817 | } | |
1818 | ||
1819 | if (size > 0) { | |
1820 | qemu_chr_be_write(chr, buf, size); | |
1821 | } | |
1822 | } | |
1823 | ||
1824 | static void win_chr_read(CharDriverState *chr) | |
1825 | { | |
1826 | WinCharState *s = chr->opaque; | |
1827 | ||
1828 | if (s->len > s->max_size) | |
1829 | s->len = s->max_size; | |
1830 | if (s->len == 0) | |
1831 | return; | |
1832 | ||
1833 | win_chr_readfile(chr); | |
1834 | } | |
1835 | ||
1836 | static int win_chr_poll(void *opaque) | |
1837 | { | |
1838 | CharDriverState *chr = opaque; | |
1839 | WinCharState *s = chr->opaque; | |
1840 | COMSTAT status; | |
1841 | DWORD comerr; | |
1842 | ||
1843 | ClearCommError(s->hcom, &comerr, &status); | |
1844 | if (status.cbInQue > 0) { | |
1845 | s->len = status.cbInQue; | |
1846 | win_chr_read_poll(chr); | |
1847 | win_chr_read(chr); | |
1848 | return 1; | |
1849 | } | |
1850 | return 0; | |
1851 | } | |
1852 | ||
1853 | static CharDriverState *qemu_chr_open_win_path(const char *filename) | |
1854 | { | |
1855 | CharDriverState *chr; | |
1856 | WinCharState *s; | |
1857 | ||
1858 | chr = g_malloc0(sizeof(CharDriverState)); | |
1859 | s = g_malloc0(sizeof(WinCharState)); | |
1860 | chr->opaque = s; | |
1861 | chr->chr_write = win_chr_write; | |
1862 | chr->chr_close = win_chr_close; | |
1863 | ||
1864 | if (win_chr_init(chr, filename) < 0) { | |
1865 | g_free(s); | |
1866 | g_free(chr); | |
1867 | return NULL; | |
1868 | } | |
1869 | qemu_chr_be_generic_open(chr); | |
1870 | return chr; | |
1871 | } | |
1872 | ||
1873 | static int win_chr_pipe_poll(void *opaque) | |
1874 | { | |
1875 | CharDriverState *chr = opaque; | |
1876 | WinCharState *s = chr->opaque; | |
1877 | DWORD size; | |
1878 | ||
1879 | PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL); | |
1880 | if (size > 0) { | |
1881 | s->len = size; | |
1882 | win_chr_read_poll(chr); | |
1883 | win_chr_read(chr); | |
1884 | return 1; | |
1885 | } | |
1886 | return 0; | |
1887 | } | |
1888 | ||
1889 | static int win_chr_pipe_init(CharDriverState *chr, const char *filename) | |
1890 | { | |
1891 | WinCharState *s = chr->opaque; | |
1892 | OVERLAPPED ov; | |
1893 | int ret; | |
1894 | DWORD size; | |
1895 | char openname[256]; | |
1896 | ||
1897 | s->fpipe = TRUE; | |
1898 | ||
1899 | s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL); | |
1900 | if (!s->hsend) { | |
1901 | fprintf(stderr, "Failed CreateEvent\n"); | |
1902 | goto fail; | |
1903 | } | |
1904 | s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL); | |
1905 | if (!s->hrecv) { | |
1906 | fprintf(stderr, "Failed CreateEvent\n"); | |
1907 | goto fail; | |
1908 | } | |
1909 | ||
1910 | snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename); | |
1911 | s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED, | |
1912 | PIPE_TYPE_BYTE | PIPE_READMODE_BYTE | | |
1913 | PIPE_WAIT, | |
1914 | MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL); | |
1915 | if (s->hcom == INVALID_HANDLE_VALUE) { | |
1916 | fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError()); | |
1917 | s->hcom = NULL; | |
1918 | goto fail; | |
1919 | } | |
1920 | ||
1921 | ZeroMemory(&ov, sizeof(ov)); | |
1922 | ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); | |
1923 | ret = ConnectNamedPipe(s->hcom, &ov); | |
1924 | if (ret) { | |
1925 | fprintf(stderr, "Failed ConnectNamedPipe\n"); | |
1926 | goto fail; | |
1927 | } | |
1928 | ||
1929 | ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE); | |
1930 | if (!ret) { | |
1931 | fprintf(stderr, "Failed GetOverlappedResult\n"); | |
1932 | if (ov.hEvent) { | |
1933 | CloseHandle(ov.hEvent); | |
1934 | ov.hEvent = NULL; | |
1935 | } | |
1936 | goto fail; | |
1937 | } | |
1938 | ||
1939 | if (ov.hEvent) { | |
1940 | CloseHandle(ov.hEvent); | |
1941 | ov.hEvent = NULL; | |
1942 | } | |
1943 | qemu_add_polling_cb(win_chr_pipe_poll, chr); | |
1944 | return 0; | |
1945 | ||
1946 | fail: | |
1947 | win_chr_close(chr); | |
1948 | return -1; | |
1949 | } | |
1950 | ||
1951 | ||
1952 | static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts) | |
1953 | { | |
1954 | const char *filename = opts->device; | |
1955 | CharDriverState *chr; | |
1956 | WinCharState *s; | |
1957 | ||
1958 | chr = g_malloc0(sizeof(CharDriverState)); | |
1959 | s = g_malloc0(sizeof(WinCharState)); | |
1960 | chr->opaque = s; | |
1961 | chr->chr_write = win_chr_write; | |
1962 | chr->chr_close = win_chr_close; | |
1963 | ||
1964 | if (win_chr_pipe_init(chr, filename) < 0) { | |
1965 | g_free(s); | |
1966 | g_free(chr); | |
1967 | return NULL; | |
1968 | } | |
1969 | qemu_chr_be_generic_open(chr); | |
1970 | return chr; | |
1971 | } | |
1972 | ||
1973 | static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out) | |
1974 | { | |
1975 | CharDriverState *chr; | |
1976 | WinCharState *s; | |
1977 | ||
1978 | chr = g_malloc0(sizeof(CharDriverState)); | |
1979 | s = g_malloc0(sizeof(WinCharState)); | |
1980 | s->hcom = fd_out; | |
1981 | chr->opaque = s; | |
1982 | chr->chr_write = win_chr_write; | |
1983 | qemu_chr_be_generic_open(chr); | |
1984 | return chr; | |
1985 | } | |
1986 | ||
1987 | static CharDriverState *qemu_chr_open_win_con(void) | |
1988 | { | |
1989 | return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE)); | |
1990 | } | |
1991 | ||
1992 | static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len) | |
1993 | { | |
1994 | HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE); | |
1995 | DWORD dwSize; | |
1996 | int len1; | |
1997 | ||
1998 | len1 = len; | |
1999 | ||
2000 | while (len1 > 0) { | |
2001 | if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) { | |
2002 | break; | |
2003 | } | |
2004 | buf += dwSize; | |
2005 | len1 -= dwSize; | |
2006 | } | |
2007 | ||
2008 | return len - len1; | |
2009 | } | |
2010 | ||
2011 | static void win_stdio_wait_func(void *opaque) | |
2012 | { | |
2013 | CharDriverState *chr = opaque; | |
2014 | WinStdioCharState *stdio = chr->opaque; | |
2015 | INPUT_RECORD buf[4]; | |
2016 | int ret; | |
2017 | DWORD dwSize; | |
2018 | int i; | |
2019 | ||
2020 | ret = ReadConsoleInput(stdio->hStdIn, buf, sizeof(buf) / sizeof(*buf), | |
2021 | &dwSize); | |
2022 | ||
2023 | if (!ret) { | |
2024 | /* Avoid error storm */ | |
2025 | qemu_del_wait_object(stdio->hStdIn, NULL, NULL); | |
2026 | return; | |
2027 | } | |
2028 | ||
2029 | for (i = 0; i < dwSize; i++) { | |
2030 | KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent; | |
2031 | ||
2032 | if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) { | |
2033 | int j; | |
2034 | if (kev->uChar.AsciiChar != 0) { | |
2035 | for (j = 0; j < kev->wRepeatCount; j++) { | |
2036 | if (qemu_chr_be_can_write(chr)) { | |
2037 | uint8_t c = kev->uChar.AsciiChar; | |
2038 | qemu_chr_be_write(chr, &c, 1); | |
2039 | } | |
2040 | } | |
2041 | } | |
2042 | } | |
2043 | } | |
2044 | } | |
2045 | ||
2046 | static DWORD WINAPI win_stdio_thread(LPVOID param) | |
2047 | { | |
2048 | CharDriverState *chr = param; | |
2049 | WinStdioCharState *stdio = chr->opaque; | |
2050 | int ret; | |
2051 | DWORD dwSize; | |
2052 | ||
2053 | while (1) { | |
2054 | ||
2055 | /* Wait for one byte */ | |
2056 | ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL); | |
2057 | ||
2058 | /* Exit in case of error, continue if nothing read */ | |
2059 | if (!ret) { | |
2060 | break; | |
2061 | } | |
2062 | if (!dwSize) { | |
2063 | continue; | |
2064 | } | |
2065 | ||
2066 | /* Some terminal emulator returns \r\n for Enter, just pass \n */ | |
2067 | if (stdio->win_stdio_buf == '\r') { | |
2068 | continue; | |
2069 | } | |
2070 | ||
2071 | /* Signal the main thread and wait until the byte was eaten */ | |
2072 | if (!SetEvent(stdio->hInputReadyEvent)) { | |
2073 | break; | |
2074 | } | |
2075 | if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE) | |
2076 | != WAIT_OBJECT_0) { | |
2077 | break; | |
2078 | } | |
2079 | } | |
2080 | ||
2081 | qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL); | |
2082 | return 0; | |
2083 | } | |
2084 | ||
2085 | static void win_stdio_thread_wait_func(void *opaque) | |
2086 | { | |
2087 | CharDriverState *chr = opaque; | |
2088 | WinStdioCharState *stdio = chr->opaque; | |
2089 | ||
2090 | if (qemu_chr_be_can_write(chr)) { | |
2091 | qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1); | |
2092 | } | |
2093 | ||
2094 | SetEvent(stdio->hInputDoneEvent); | |
2095 | } | |
2096 | ||
2097 | static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo) | |
2098 | { | |
2099 | WinStdioCharState *stdio = chr->opaque; | |
2100 | DWORD dwMode = 0; | |
2101 | ||
2102 | GetConsoleMode(stdio->hStdIn, &dwMode); | |
2103 | ||
2104 | if (echo) { | |
2105 | SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT); | |
2106 | } else { | |
2107 | SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT); | |
2108 | } | |
2109 | } | |
2110 | ||
2111 | static void win_stdio_close(CharDriverState *chr) | |
2112 | { | |
2113 | WinStdioCharState *stdio = chr->opaque; | |
2114 | ||
2115 | if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) { | |
2116 | CloseHandle(stdio->hInputReadyEvent); | |
2117 | } | |
2118 | if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) { | |
2119 | CloseHandle(stdio->hInputDoneEvent); | |
2120 | } | |
2121 | if (stdio->hInputThread != INVALID_HANDLE_VALUE) { | |
2122 | TerminateThread(stdio->hInputThread, 0); | |
2123 | } | |
2124 | ||
2125 | g_free(chr->opaque); | |
2126 | g_free(chr); | |
2127 | } | |
2128 | ||
2129 | static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts) | |
2130 | { | |
2131 | CharDriverState *chr; | |
2132 | WinStdioCharState *stdio; | |
2133 | DWORD dwMode; | |
2134 | int is_console = 0; | |
2135 | ||
2136 | chr = g_malloc0(sizeof(CharDriverState)); | |
2137 | stdio = g_malloc0(sizeof(WinStdioCharState)); | |
2138 | ||
2139 | stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE); | |
2140 | if (stdio->hStdIn == INVALID_HANDLE_VALUE) { | |
2141 | fprintf(stderr, "cannot open stdio: invalid handle\n"); | |
2142 | exit(1); | |
2143 | } | |
2144 | ||
2145 | is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0; | |
2146 | ||
2147 | chr->opaque = stdio; | |
2148 | chr->chr_write = win_stdio_write; | |
2149 | chr->chr_close = win_stdio_close; | |
2150 | ||
2151 | if (is_console) { | |
2152 | if (qemu_add_wait_object(stdio->hStdIn, | |
2153 | win_stdio_wait_func, chr)) { | |
2154 | fprintf(stderr, "qemu_add_wait_object: failed\n"); | |
2155 | } | |
2156 | } else { | |
2157 | DWORD dwId; | |
2158 | ||
2159 | stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL); | |
2160 | stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL); | |
2161 | stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread, | |
2162 | chr, 0, &dwId); | |
2163 | ||
2164 | if (stdio->hInputThread == INVALID_HANDLE_VALUE | |
2165 | || stdio->hInputReadyEvent == INVALID_HANDLE_VALUE | |
2166 | || stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) { | |
2167 | fprintf(stderr, "cannot create stdio thread or event\n"); | |
2168 | exit(1); | |
2169 | } | |
2170 | if (qemu_add_wait_object(stdio->hInputReadyEvent, | |
2171 | win_stdio_thread_wait_func, chr)) { | |
2172 | fprintf(stderr, "qemu_add_wait_object: failed\n"); | |
2173 | } | |
2174 | } | |
2175 | ||
2176 | dwMode |= ENABLE_LINE_INPUT; | |
2177 | ||
2178 | if (is_console) { | |
2179 | /* set the terminal in raw mode */ | |
2180 | /* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */ | |
2181 | dwMode |= ENABLE_PROCESSED_INPUT; | |
2182 | } | |
2183 | ||
2184 | SetConsoleMode(stdio->hStdIn, dwMode); | |
2185 | ||
2186 | chr->chr_set_echo = qemu_chr_set_echo_win_stdio; | |
2187 | qemu_chr_fe_set_echo(chr, false); | |
2188 | ||
2189 | return chr; | |
2190 | } | |
2191 | #endif /* !_WIN32 */ | |
2192 | ||
2193 | ||
2194 | /***********************************************************/ | |
2195 | /* UDP Net console */ | |
2196 | ||
2197 | typedef struct { | |
2198 | int fd; | |
2199 | GIOChannel *chan; | |
2200 | guint tag; | |
2201 | uint8_t buf[READ_BUF_LEN]; | |
2202 | int bufcnt; | |
2203 | int bufptr; | |
2204 | int max_size; | |
2205 | } NetCharDriver; | |
2206 | ||
2207 | static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len) | |
2208 | { | |
2209 | NetCharDriver *s = chr->opaque; | |
2210 | gsize bytes_written; | |
2211 | GIOStatus status; | |
2212 | ||
2213 | status = g_io_channel_write_chars(s->chan, (const gchar *)buf, len, &bytes_written, NULL); | |
2214 | if (status == G_IO_STATUS_EOF) { | |
2215 | return 0; | |
2216 | } else if (status != G_IO_STATUS_NORMAL) { | |
2217 | return -1; | |
2218 | } | |
2219 | ||
2220 | return bytes_written; | |
2221 | } | |
2222 | ||
2223 | static int udp_chr_read_poll(void *opaque) | |
2224 | { | |
2225 | CharDriverState *chr = opaque; | |
2226 | NetCharDriver *s = chr->opaque; | |
2227 | ||
2228 | s->max_size = qemu_chr_be_can_write(chr); | |
2229 | ||
2230 | /* If there were any stray characters in the queue process them | |
2231 | * first | |
2232 | */ | |
2233 | while (s->max_size > 0 && s->bufptr < s->bufcnt) { | |
2234 | qemu_chr_be_write(chr, &s->buf[s->bufptr], 1); | |
2235 | s->bufptr++; | |
2236 | s->max_size = qemu_chr_be_can_write(chr); | |
2237 | } | |
2238 | return s->max_size; | |
2239 | } | |
2240 | ||
2241 | static gboolean udp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque) | |
2242 | { | |
2243 | CharDriverState *chr = opaque; | |
2244 | NetCharDriver *s = chr->opaque; | |
2245 | gsize bytes_read = 0; | |
2246 | GIOStatus status; | |
2247 | ||
2248 | if (s->max_size == 0) | |
2249 | return FALSE; | |
2250 | status = g_io_channel_read_chars(s->chan, (gchar *)s->buf, sizeof(s->buf), | |
2251 | &bytes_read, NULL); | |
2252 | s->bufcnt = bytes_read; | |
2253 | s->bufptr = s->bufcnt; | |
2254 | if (status != G_IO_STATUS_NORMAL) { | |
2255 | return FALSE; | |
2256 | } | |
2257 | ||
2258 | s->bufptr = 0; | |
2259 | while (s->max_size > 0 && s->bufptr < s->bufcnt) { | |
2260 | qemu_chr_be_write(chr, &s->buf[s->bufptr], 1); | |
2261 | s->bufptr++; | |
2262 | s->max_size = qemu_chr_be_can_write(chr); | |
2263 | } | |
2264 | ||
2265 | return TRUE; | |
2266 | } | |
2267 | ||
2268 | static void udp_chr_update_read_handler(CharDriverState *chr) | |
2269 | { | |
2270 | NetCharDriver *s = chr->opaque; | |
2271 | ||
2272 | if (s->tag) { | |
2273 | g_source_remove(s->tag); | |
2274 | s->tag = 0; | |
2275 | } | |
2276 | ||
2277 | if (s->chan) { | |
2278 | s->tag = io_add_watch_poll(s->chan, udp_chr_read_poll, udp_chr_read, chr); | |
2279 | } | |
2280 | } | |
2281 | ||
2282 | static void udp_chr_close(CharDriverState *chr) | |
2283 | { | |
2284 | NetCharDriver *s = chr->opaque; | |
2285 | if (s->tag) { | |
2286 | g_source_remove(s->tag); | |
2287 | s->tag = 0; | |
2288 | } | |
2289 | if (s->chan) { | |
2290 | g_io_channel_unref(s->chan); | |
2291 | closesocket(s->fd); | |
2292 | } | |
2293 | g_free(s); | |
2294 | qemu_chr_be_event(chr, CHR_EVENT_CLOSED); | |
2295 | } | |
2296 | ||
2297 | static CharDriverState *qemu_chr_open_udp_fd(int fd) | |
2298 | { | |
2299 | CharDriverState *chr = NULL; | |
2300 | NetCharDriver *s = NULL; | |
2301 | ||
2302 | chr = g_malloc0(sizeof(CharDriverState)); | |
2303 | s = g_malloc0(sizeof(NetCharDriver)); | |
2304 | ||
2305 | s->fd = fd; | |
2306 | s->chan = io_channel_from_socket(s->fd); | |
2307 | s->bufcnt = 0; | |
2308 | s->bufptr = 0; | |
2309 | chr->opaque = s; | |
2310 | chr->chr_write = udp_chr_write; | |
2311 | chr->chr_update_read_handler = udp_chr_update_read_handler; | |
2312 | chr->chr_close = udp_chr_close; | |
2313 | return chr; | |
2314 | } | |
2315 | ||
2316 | static CharDriverState *qemu_chr_open_udp(QemuOpts *opts) | |
2317 | { | |
2318 | Error *local_err = NULL; | |
2319 | int fd = -1; | |
2320 | ||
2321 | fd = inet_dgram_opts(opts, &local_err); | |
2322 | if (fd < 0) { | |
2323 | return NULL; | |
2324 | } | |
2325 | return qemu_chr_open_udp_fd(fd); | |
2326 | } | |
2327 | ||
2328 | /***********************************************************/ | |
2329 | /* TCP Net console */ | |
2330 | ||
2331 | typedef struct { | |
2332 | ||
2333 | GIOChannel *chan, *listen_chan; | |
2334 | guint tag, listen_tag; | |
2335 | int fd, listen_fd; | |
2336 | int connected; | |
2337 | int max_size; | |
2338 | int do_telnetopt; | |
2339 | int do_nodelay; | |
2340 | int is_unix; | |
2341 | int msgfd; | |
2342 | } TCPCharDriver; | |
2343 | ||
2344 | static gboolean tcp_chr_accept(GIOChannel *chan, GIOCondition cond, void *opaque); | |
2345 | ||
2346 | static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len) | |
2347 | { | |
2348 | TCPCharDriver *s = chr->opaque; | |
2349 | if (s->connected) { | |
2350 | return io_channel_send(s->chan, buf, len); | |
2351 | } else { | |
2352 | /* XXX: indicate an error ? */ | |
2353 | return len; | |
2354 | } | |
2355 | } | |
2356 | ||
2357 | static int tcp_chr_read_poll(void *opaque) | |
2358 | { | |
2359 | CharDriverState *chr = opaque; | |
2360 | TCPCharDriver *s = chr->opaque; | |
2361 | if (!s->connected) | |
2362 | return 0; | |
2363 | s->max_size = qemu_chr_be_can_write(chr); | |
2364 | return s->max_size; | |
2365 | } | |
2366 | ||
2367 | #define IAC 255 | |
2368 | #define IAC_BREAK 243 | |
2369 | static void tcp_chr_process_IAC_bytes(CharDriverState *chr, | |
2370 | TCPCharDriver *s, | |
2371 | uint8_t *buf, int *size) | |
2372 | { | |
2373 | /* Handle any telnet client's basic IAC options to satisfy char by | |
2374 | * char mode with no echo. All IAC options will be removed from | |
2375 | * the buf and the do_telnetopt variable will be used to track the | |
2376 | * state of the width of the IAC information. | |
2377 | * | |
2378 | * IAC commands come in sets of 3 bytes with the exception of the | |
2379 | * "IAC BREAK" command and the double IAC. | |
2380 | */ | |
2381 | ||
2382 | int i; | |
2383 | int j = 0; | |
2384 | ||
2385 | for (i = 0; i < *size; i++) { | |
2386 | if (s->do_telnetopt > 1) { | |
2387 | if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) { | |
2388 | /* Double IAC means send an IAC */ | |
2389 | if (j != i) | |
2390 | buf[j] = buf[i]; | |
2391 | j++; | |
2392 | s->do_telnetopt = 1; | |
2393 | } else { | |
2394 | if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) { | |
2395 | /* Handle IAC break commands by sending a serial break */ | |
2396 | qemu_chr_be_event(chr, CHR_EVENT_BREAK); | |
2397 | s->do_telnetopt++; | |
2398 | } | |
2399 | s->do_telnetopt++; | |
2400 | } | |
2401 | if (s->do_telnetopt >= 4) { | |
2402 | s->do_telnetopt = 1; | |
2403 | } | |
2404 | } else { | |
2405 | if ((unsigned char)buf[i] == IAC) { | |
2406 | s->do_telnetopt = 2; | |
2407 | } else { | |
2408 | if (j != i) | |
2409 | buf[j] = buf[i]; | |
2410 | j++; | |
2411 | } | |
2412 | } | |
2413 | } | |
2414 | *size = j; | |
2415 | } | |
2416 | ||
2417 | static int tcp_get_msgfd(CharDriverState *chr) | |
2418 | { | |
2419 | TCPCharDriver *s = chr->opaque; | |
2420 | int fd = s->msgfd; | |
2421 | s->msgfd = -1; | |
2422 | return fd; | |
2423 | } | |
2424 | ||
2425 | #ifndef _WIN32 | |
2426 | static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg) | |
2427 | { | |
2428 | TCPCharDriver *s = chr->opaque; | |
2429 | struct cmsghdr *cmsg; | |
2430 | ||
2431 | for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) { | |
2432 | int fd; | |
2433 | ||
2434 | if (cmsg->cmsg_len != CMSG_LEN(sizeof(int)) || | |
2435 | cmsg->cmsg_level != SOL_SOCKET || | |
2436 | cmsg->cmsg_type != SCM_RIGHTS) | |
2437 | continue; | |
2438 | ||
2439 | fd = *((int *)CMSG_DATA(cmsg)); | |
2440 | if (fd < 0) | |
2441 | continue; | |
2442 | ||
2443 | /* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */ | |
2444 | qemu_set_block(fd); | |
2445 | ||
2446 | #ifndef MSG_CMSG_CLOEXEC | |
2447 | qemu_set_cloexec(fd); | |
2448 | #endif | |
2449 | if (s->msgfd != -1) | |
2450 | close(s->msgfd); | |
2451 | s->msgfd = fd; | |
2452 | } | |
2453 | } | |
2454 | ||
2455 | static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len) | |
2456 | { | |
2457 | TCPCharDriver *s = chr->opaque; | |
2458 | struct msghdr msg = { NULL, }; | |
2459 | struct iovec iov[1]; | |
2460 | union { | |
2461 | struct cmsghdr cmsg; | |
2462 | char control[CMSG_SPACE(sizeof(int))]; | |
2463 | } msg_control; | |
2464 | int flags = 0; | |
2465 | ssize_t ret; | |
2466 | ||
2467 | iov[0].iov_base = buf; | |
2468 | iov[0].iov_len = len; | |
2469 | ||
2470 | msg.msg_iov = iov; | |
2471 | msg.msg_iovlen = 1; | |
2472 | msg.msg_control = &msg_control; | |
2473 | msg.msg_controllen = sizeof(msg_control); | |
2474 | ||
2475 | #ifdef MSG_CMSG_CLOEXEC | |
2476 | flags |= MSG_CMSG_CLOEXEC; | |
2477 | #endif | |
2478 | ret = recvmsg(s->fd, &msg, flags); | |
2479 | if (ret > 0 && s->is_unix) { | |
2480 | unix_process_msgfd(chr, &msg); | |
2481 | } | |
2482 | ||
2483 | return ret; | |
2484 | } | |
2485 | #else | |
2486 | static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len) | |
2487 | { | |
2488 | TCPCharDriver *s = chr->opaque; | |
2489 | return qemu_recv(s->fd, buf, len, 0); | |
2490 | } | |
2491 | #endif | |
2492 | ||
2493 | static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond) | |
2494 | { | |
2495 | TCPCharDriver *s = chr->opaque; | |
2496 | return g_io_create_watch(s->chan, cond); | |
2497 | } | |
2498 | ||
2499 | static gboolean tcp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque) | |
2500 | { | |
2501 | CharDriverState *chr = opaque; | |
2502 | TCPCharDriver *s = chr->opaque; | |
2503 | uint8_t buf[READ_BUF_LEN]; | |
2504 | int len, size; | |
2505 | ||
2506 | if (!s->connected || s->max_size <= 0) { | |
2507 | return FALSE; | |
2508 | } | |
2509 | len = sizeof(buf); | |
2510 | if (len > s->max_size) | |
2511 | len = s->max_size; | |
2512 | size = tcp_chr_recv(chr, (void *)buf, len); | |
2513 | if (size == 0) { | |
2514 | /* connection closed */ | |
2515 | s->connected = 0; | |
2516 | if (s->listen_chan) { | |
2517 | s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr); | |
2518 | } | |
2519 | if (s->tag) { | |
2520 | g_source_remove(s->tag); | |
2521 | s->tag = 0; | |
2522 | } | |
2523 | g_io_channel_unref(s->chan); | |
2524 | s->chan = NULL; | |
2525 | closesocket(s->fd); | |
2526 | s->fd = -1; | |
2527 | qemu_chr_be_event(chr, CHR_EVENT_CLOSED); | |
2528 | } else if (size > 0) { | |
2529 | if (s->do_telnetopt) | |
2530 | tcp_chr_process_IAC_bytes(chr, s, buf, &size); | |
2531 | if (size > 0) | |
2532 | qemu_chr_be_write(chr, buf, size); | |
2533 | } | |
2534 | ||
2535 | return TRUE; | |
2536 | } | |
2537 | ||
2538 | #ifndef _WIN32 | |
2539 | CharDriverState *qemu_chr_open_eventfd(int eventfd) | |
2540 | { | |
2541 | return qemu_chr_open_fd(eventfd, eventfd); | |
2542 | } | |
2543 | #endif | |
2544 | ||
2545 | static void tcp_chr_connect(void *opaque) | |
2546 | { | |
2547 | CharDriverState *chr = opaque; | |
2548 | TCPCharDriver *s = chr->opaque; | |
2549 | ||
2550 | s->connected = 1; | |
2551 | if (s->chan) { | |
2552 | s->tag = io_add_watch_poll(s->chan, tcp_chr_read_poll, tcp_chr_read, chr); | |
2553 | } | |
2554 | qemu_chr_be_generic_open(chr); | |
2555 | } | |
2556 | ||
2557 | #define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c; | |
2558 | static void tcp_chr_telnet_init(int fd) | |
2559 | { | |
2560 | char buf[3]; | |
2561 | /* Send the telnet negotion to put telnet in binary, no echo, single char mode */ | |
2562 | IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */ | |
2563 | send(fd, (char *)buf, 3, 0); | |
2564 | IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */ | |
2565 | send(fd, (char *)buf, 3, 0); | |
2566 | IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */ | |
2567 | send(fd, (char *)buf, 3, 0); | |
2568 | IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */ | |
2569 | send(fd, (char *)buf, 3, 0); | |
2570 | } | |
2571 | ||
2572 | static int tcp_chr_add_client(CharDriverState *chr, int fd) | |
2573 | { | |
2574 | TCPCharDriver *s = chr->opaque; | |
2575 | if (s->fd != -1) | |
2576 | return -1; | |
2577 | ||
2578 | qemu_set_nonblock(fd); | |
2579 | if (s->do_nodelay) | |
2580 | socket_set_nodelay(fd); | |
2581 | s->fd = fd; | |
2582 | s->chan = io_channel_from_socket(fd); | |
2583 | if (s->listen_tag) { | |
2584 | g_source_remove(s->listen_tag); | |
2585 | s->listen_tag = 0; | |
2586 | } | |
2587 | tcp_chr_connect(chr); | |
2588 | ||
2589 | return 0; | |
2590 | } | |
2591 | ||
2592 | static gboolean tcp_chr_accept(GIOChannel *channel, GIOCondition cond, void *opaque) | |
2593 | { | |
2594 | CharDriverState *chr = opaque; | |
2595 | TCPCharDriver *s = chr->opaque; | |
2596 | struct sockaddr_in saddr; | |
2597 | #ifndef _WIN32 | |
2598 | struct sockaddr_un uaddr; | |
2599 | #endif | |
2600 | struct sockaddr *addr; | |
2601 | socklen_t len; | |
2602 | int fd; | |
2603 | ||
2604 | for(;;) { | |
2605 | #ifndef _WIN32 | |
2606 | if (s->is_unix) { | |
2607 | len = sizeof(uaddr); | |
2608 | addr = (struct sockaddr *)&uaddr; | |
2609 | } else | |
2610 | #endif | |
2611 | { | |
2612 | len = sizeof(saddr); | |
2613 | addr = (struct sockaddr *)&saddr; | |
2614 | } | |
2615 | fd = qemu_accept(s->listen_fd, addr, &len); | |
2616 | if (fd < 0 && errno != EINTR) { | |
2617 | return FALSE; | |
2618 | } else if (fd >= 0) { | |
2619 | if (s->do_telnetopt) | |
2620 | tcp_chr_telnet_init(fd); | |
2621 | break; | |
2622 | } | |
2623 | } | |
2624 | if (tcp_chr_add_client(chr, fd) < 0) | |
2625 | close(fd); | |
2626 | ||
2627 | return TRUE; | |
2628 | } | |
2629 | ||
2630 | static void tcp_chr_close(CharDriverState *chr) | |
2631 | { | |
2632 | TCPCharDriver *s = chr->opaque; | |
2633 | if (s->fd >= 0) { | |
2634 | if (s->tag) { | |
2635 | g_source_remove(s->tag); | |
2636 | s->tag = 0; | |
2637 | } | |
2638 | if (s->chan) { | |
2639 | g_io_channel_unref(s->chan); | |
2640 | } | |
2641 | closesocket(s->fd); | |
2642 | } | |
2643 | if (s->listen_fd >= 0) { | |
2644 | if (s->listen_tag) { | |
2645 | g_source_remove(s->listen_tag); | |
2646 | s->listen_tag = 0; | |
2647 | } | |
2648 | if (s->listen_chan) { | |
2649 | g_io_channel_unref(s->listen_chan); | |
2650 | } | |
2651 | closesocket(s->listen_fd); | |
2652 | } | |
2653 | g_free(s); | |
2654 | qemu_chr_be_event(chr, CHR_EVENT_CLOSED); | |
2655 | } | |
2656 | ||
2657 | static CharDriverState *qemu_chr_open_socket_fd(int fd, bool do_nodelay, | |
2658 | bool is_listen, bool is_telnet, | |
2659 | bool is_waitconnect, | |
2660 | Error **errp) | |
2661 | { | |
2662 | CharDriverState *chr = NULL; | |
2663 | TCPCharDriver *s = NULL; | |
2664 | char host[NI_MAXHOST], serv[NI_MAXSERV]; | |
2665 | const char *left = "", *right = ""; | |
2666 | struct sockaddr_storage ss; | |
2667 | socklen_t ss_len = sizeof(ss); | |
2668 | ||
2669 | memset(&ss, 0, ss_len); | |
2670 | if (getsockname(fd, (struct sockaddr *) &ss, &ss_len) != 0) { | |
2671 | error_setg(errp, "getsockname: %s", strerror(errno)); | |
2672 | return NULL; | |
2673 | } | |
2674 | ||
2675 | chr = g_malloc0(sizeof(CharDriverState)); | |
2676 | s = g_malloc0(sizeof(TCPCharDriver)); | |
2677 | ||
2678 | s->connected = 0; | |
2679 | s->fd = -1; | |
2680 | s->listen_fd = -1; | |
2681 | s->msgfd = -1; | |
2682 | ||
2683 | chr->filename = g_malloc(256); | |
2684 | switch (ss.ss_family) { | |
2685 | #ifndef _WIN32 | |
2686 | case AF_UNIX: | |
2687 | s->is_unix = 1; | |
2688 | snprintf(chr->filename, 256, "unix:%s%s", | |
2689 | ((struct sockaddr_un *)(&ss))->sun_path, | |
2690 | is_listen ? ",server" : ""); | |
2691 | break; | |
2692 | #endif | |
2693 | case AF_INET6: | |
2694 | left = "["; | |
2695 | right = "]"; | |
2696 | /* fall through */ | |
2697 | case AF_INET: | |
2698 | s->do_nodelay = do_nodelay; | |
2699 | getnameinfo((struct sockaddr *) &ss, ss_len, host, sizeof(host), | |
2700 | serv, sizeof(serv), NI_NUMERICHOST | NI_NUMERICSERV); | |
2701 | snprintf(chr->filename, 256, "%s:%s%s%s:%s%s", | |
2702 | is_telnet ? "telnet" : "tcp", | |
2703 | left, host, right, serv, | |
2704 | is_listen ? ",server" : ""); | |
2705 | break; | |
2706 | } | |
2707 | ||
2708 | chr->opaque = s; | |
2709 | chr->chr_write = tcp_chr_write; | |
2710 | chr->chr_close = tcp_chr_close; | |
2711 | chr->get_msgfd = tcp_get_msgfd; | |
2712 | chr->chr_add_client = tcp_chr_add_client; | |
2713 | chr->chr_add_watch = tcp_chr_add_watch; | |
2714 | ||
2715 | if (is_listen) { | |
2716 | s->listen_fd = fd; | |
2717 | s->listen_chan = io_channel_from_socket(s->listen_fd); | |
2718 | s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr); | |
2719 | if (is_telnet) { | |
2720 | s->do_telnetopt = 1; | |
2721 | } | |
2722 | } else { | |
2723 | s->connected = 1; | |
2724 | s->fd = fd; | |
2725 | socket_set_nodelay(fd); | |
2726 | s->chan = io_channel_from_socket(s->fd); | |
2727 | tcp_chr_connect(chr); | |
2728 | } | |
2729 | ||
2730 | if (is_listen && is_waitconnect) { | |
2731 | printf("QEMU waiting for connection on: %s\n", | |
2732 | chr->filename); | |
2733 | tcp_chr_accept(s->listen_chan, G_IO_IN, chr); | |
2734 | qemu_set_nonblock(s->listen_fd); | |
2735 | } | |
2736 | return chr; | |
2737 | } | |
2738 | ||
2739 | static CharDriverState *qemu_chr_open_socket(QemuOpts *opts) | |
2740 | { | |
2741 | CharDriverState *chr = NULL; | |
2742 | Error *local_err = NULL; | |
2743 | int fd = -1; | |
2744 | int is_listen; | |
2745 | int is_waitconnect; | |
2746 | int do_nodelay; | |
2747 | int is_unix; | |
2748 | int is_telnet; | |
2749 | ||
2750 | is_listen = qemu_opt_get_bool(opts, "server", 0); | |
2751 | is_waitconnect = qemu_opt_get_bool(opts, "wait", 1); | |
2752 | is_telnet = qemu_opt_get_bool(opts, "telnet", 0); | |
2753 | do_nodelay = !qemu_opt_get_bool(opts, "delay", 1); | |
2754 | is_unix = qemu_opt_get(opts, "path") != NULL; | |
2755 | if (!is_listen) | |
2756 | is_waitconnect = 0; | |
2757 | ||
2758 | if (is_unix) { | |
2759 | if (is_listen) { | |
2760 | fd = unix_listen_opts(opts, &local_err); | |
2761 | } else { | |
2762 | fd = unix_connect_opts(opts, &local_err, NULL, NULL); | |
2763 | } | |
2764 | } else { | |
2765 | if (is_listen) { | |
2766 | fd = inet_listen_opts(opts, 0, &local_err); | |
2767 | } else { | |
2768 | fd = inet_connect_opts(opts, &local_err, NULL, NULL); | |
2769 | } | |
2770 | } | |
2771 | if (fd < 0) { | |
2772 | goto fail; | |
2773 | } | |
2774 | ||
2775 | if (!is_waitconnect) | |
2776 | qemu_set_nonblock(fd); | |
2777 | ||
2778 | chr = qemu_chr_open_socket_fd(fd, do_nodelay, is_listen, is_telnet, | |
2779 | is_waitconnect, &local_err); | |
2780 | if (error_is_set(&local_err)) { | |
2781 | goto fail; | |
2782 | } | |
2783 | return chr; | |
2784 | ||
2785 | ||
2786 | fail: | |
2787 | if (local_err) { | |
2788 | qerror_report_err(local_err); | |
2789 | error_free(local_err); | |
2790 | } | |
2791 | if (fd >= 0) { | |
2792 | closesocket(fd); | |
2793 | } | |
2794 | if (chr) { | |
2795 | g_free(chr->opaque); | |
2796 | g_free(chr); | |
2797 | } | |
2798 | return NULL; | |
2799 | } | |
2800 | ||
2801 | /*********************************************************/ | |
2802 | /* Ring buffer chardev */ | |
2803 | ||
2804 | typedef struct { | |
2805 | size_t size; | |
2806 | size_t prod; | |
2807 | size_t cons; | |
2808 | uint8_t *cbuf; | |
2809 | } RingBufCharDriver; | |
2810 | ||
2811 | static size_t ringbuf_count(const CharDriverState *chr) | |
2812 | { | |
2813 | const RingBufCharDriver *d = chr->opaque; | |
2814 | ||
2815 | return d->prod - d->cons; | |
2816 | } | |
2817 | ||
2818 | static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len) | |
2819 | { | |
2820 | RingBufCharDriver *d = chr->opaque; | |
2821 | int i; | |
2822 | ||
2823 | if (!buf || (len < 0)) { | |
2824 | return -1; | |
2825 | } | |
2826 | ||
2827 | for (i = 0; i < len; i++ ) { | |
2828 | d->cbuf[d->prod++ & (d->size - 1)] = buf[i]; | |
2829 | if (d->prod - d->cons > d->size) { | |
2830 | d->cons = d->prod - d->size; | |
2831 | } | |
2832 | } | |
2833 | ||
2834 | return 0; | |
2835 | } | |
2836 | ||
2837 | static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len) | |
2838 | { | |
2839 | RingBufCharDriver *d = chr->opaque; | |
2840 | int i; | |
2841 | ||
2842 | for (i = 0; i < len && d->cons != d->prod; i++) { | |
2843 | buf[i] = d->cbuf[d->cons++ & (d->size - 1)]; | |
2844 | } | |
2845 | ||
2846 | return i; | |
2847 | } | |
2848 | ||
2849 | static void ringbuf_chr_close(struct CharDriverState *chr) | |
2850 | { | |
2851 | RingBufCharDriver *d = chr->opaque; | |
2852 | ||
2853 | g_free(d->cbuf); | |
2854 | g_free(d); | |
2855 | chr->opaque = NULL; | |
2856 | } | |
2857 | ||
2858 | static CharDriverState *qemu_chr_open_ringbuf(ChardevRingbuf *opts, | |
2859 | Error **errp) | |
2860 | { | |
2861 | CharDriverState *chr; | |
2862 | RingBufCharDriver *d; | |
2863 | ||
2864 | chr = g_malloc0(sizeof(CharDriverState)); | |
2865 | d = g_malloc(sizeof(*d)); | |
2866 | ||
2867 | d->size = opts->has_size ? opts->size : 65536; | |
2868 | ||
2869 | /* The size must be power of 2 */ | |
2870 | if (d->size & (d->size - 1)) { | |
2871 | error_setg(errp, "size of ringbuf chardev must be power of two"); | |
2872 | goto fail; | |
2873 | } | |
2874 | ||
2875 | d->prod = 0; | |
2876 | d->cons = 0; | |
2877 | d->cbuf = g_malloc0(d->size); | |
2878 | ||
2879 | chr->opaque = d; | |
2880 | chr->chr_write = ringbuf_chr_write; | |
2881 | chr->chr_close = ringbuf_chr_close; | |
2882 | ||
2883 | return chr; | |
2884 | ||
2885 | fail: | |
2886 | g_free(d); | |
2887 | g_free(chr); | |
2888 | return NULL; | |
2889 | } | |
2890 | ||
2891 | static bool chr_is_ringbuf(const CharDriverState *chr) | |
2892 | { | |
2893 | return chr->chr_write == ringbuf_chr_write; | |
2894 | } | |
2895 | ||
2896 | void qmp_ringbuf_write(const char *device, const char *data, | |
2897 | bool has_format, enum DataFormat format, | |
2898 | Error **errp) | |
2899 | { | |
2900 | CharDriverState *chr; | |
2901 | const uint8_t *write_data; | |
2902 | int ret; | |
2903 | size_t write_count; | |
2904 | ||
2905 | chr = qemu_chr_find(device); | |
2906 | if (!chr) { | |
2907 | error_setg(errp, "Device '%s' not found", device); | |
2908 | return; | |
2909 | } | |
2910 | ||
2911 | if (!chr_is_ringbuf(chr)) { | |
2912 | error_setg(errp,"%s is not a ringbuf device", device); | |
2913 | return; | |
2914 | } | |
2915 | ||
2916 | if (has_format && (format == DATA_FORMAT_BASE64)) { | |
2917 | write_data = g_base64_decode(data, &write_count); | |
2918 | } else { | |
2919 | write_data = (uint8_t *)data; | |
2920 | write_count = strlen(data); | |
2921 | } | |
2922 | ||
2923 | ret = ringbuf_chr_write(chr, write_data, write_count); | |
2924 | ||
2925 | if (write_data != (uint8_t *)data) { | |
2926 | g_free((void *)write_data); | |
2927 | } | |
2928 | ||
2929 | if (ret < 0) { | |
2930 | error_setg(errp, "Failed to write to device %s", device); | |
2931 | return; | |
2932 | } | |
2933 | } | |
2934 | ||
2935 | char *qmp_ringbuf_read(const char *device, int64_t size, | |
2936 | bool has_format, enum DataFormat format, | |
2937 | Error **errp) | |
2938 | { | |
2939 | CharDriverState *chr; | |
2940 | uint8_t *read_data; | |
2941 | size_t count; | |
2942 | char *data; | |
2943 | ||
2944 | chr = qemu_chr_find(device); | |
2945 | if (!chr) { | |
2946 | error_setg(errp, "Device '%s' not found", device); | |
2947 | return NULL; | |
2948 | } | |
2949 | ||
2950 | if (!chr_is_ringbuf(chr)) { | |
2951 | error_setg(errp,"%s is not a ringbuf device", device); | |
2952 | return NULL; | |
2953 | } | |
2954 | ||
2955 | if (size <= 0) { | |
2956 | error_setg(errp, "size must be greater than zero"); | |
2957 | return NULL; | |
2958 | } | |
2959 | ||
2960 | count = ringbuf_count(chr); | |
2961 | size = size > count ? count : size; | |
2962 | read_data = g_malloc(size + 1); | |
2963 | ||
2964 | ringbuf_chr_read(chr, read_data, size); | |
2965 | ||
2966 | if (has_format && (format == DATA_FORMAT_BASE64)) { | |
2967 | data = g_base64_encode(read_data, size); | |
2968 | g_free(read_data); | |
2969 | } else { | |
2970 | /* | |
2971 | * FIXME should read only complete, valid UTF-8 characters up | |
2972 | * to @size bytes. Invalid sequences should be replaced by a | |
2973 | * suitable replacement character. Except when (and only | |
2974 | * when) ring buffer lost characters since last read, initial | |
2975 | * continuation characters should be dropped. | |
2976 | */ | |
2977 | read_data[size] = 0; | |
2978 | data = (char *)read_data; | |
2979 | } | |
2980 | ||
2981 | return data; | |
2982 | } | |
2983 | ||
2984 | QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename) | |
2985 | { | |
2986 | char host[65], port[33], width[8], height[8]; | |
2987 | int pos; | |
2988 | const char *p; | |
2989 | QemuOpts *opts; | |
2990 | Error *local_err = NULL; | |
2991 | ||
2992 | opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err); | |
2993 | if (error_is_set(&local_err)) { | |
2994 | qerror_report_err(local_err); | |
2995 | error_free(local_err); | |
2996 | return NULL; | |
2997 | } | |
2998 | ||
2999 | if (strstart(filename, "mon:", &p)) { | |
3000 | filename = p; | |
3001 | qemu_opt_set(opts, "mux", "on"); | |
3002 | } | |
3003 | ||
3004 | if (strcmp(filename, "null") == 0 || | |
3005 | strcmp(filename, "pty") == 0 || | |
3006 | strcmp(filename, "msmouse") == 0 || | |
3007 | strcmp(filename, "braille") == 0 || | |
3008 | strcmp(filename, "stdio") == 0) { | |
3009 | qemu_opt_set(opts, "backend", filename); | |
3010 | return opts; | |
3011 | } | |
3012 | if (strstart(filename, "vc", &p)) { | |
3013 | qemu_opt_set(opts, "backend", "vc"); | |
3014 | if (*p == ':') { | |
3015 | if (sscanf(p+1, "%8[0-9]x%8[0-9]", width, height) == 2) { | |
3016 | /* pixels */ | |
3017 | qemu_opt_set(opts, "width", width); | |
3018 | qemu_opt_set(opts, "height", height); | |
3019 | } else if (sscanf(p+1, "%8[0-9]Cx%8[0-9]C", width, height) == 2) { | |
3020 | /* chars */ | |
3021 | qemu_opt_set(opts, "cols", width); | |
3022 | qemu_opt_set(opts, "rows", height); | |
3023 | } else { | |
3024 | goto fail; | |
3025 | } | |
3026 | } | |
3027 | return opts; | |
3028 | } | |
3029 | if (strcmp(filename, "con:") == 0) { | |
3030 | qemu_opt_set(opts, "backend", "console"); | |
3031 | return opts; | |
3032 | } | |
3033 | if (strstart(filename, "COM", NULL)) { | |
3034 | qemu_opt_set(opts, "backend", "serial"); | |
3035 | qemu_opt_set(opts, "path", filename); | |
3036 | return opts; | |
3037 | } | |
3038 | if (strstart(filename, "file:", &p)) { | |
3039 | qemu_opt_set(opts, "backend", "file"); | |
3040 | qemu_opt_set(opts, "path", p); | |
3041 | return opts; | |
3042 | } | |
3043 | if (strstart(filename, "pipe:", &p)) { | |
3044 | qemu_opt_set(opts, "backend", "pipe"); | |
3045 | qemu_opt_set(opts, "path", p); | |
3046 | return opts; | |
3047 | } | |
3048 | if (strstart(filename, "tcp:", &p) || | |
3049 | strstart(filename, "telnet:", &p)) { | |
3050 | if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) { | |
3051 | host[0] = 0; | |
3052 | if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) | |
3053 | goto fail; | |
3054 | } | |
3055 | qemu_opt_set(opts, "backend", "socket"); | |
3056 | qemu_opt_set(opts, "host", host); | |
3057 | qemu_opt_set(opts, "port", port); | |
3058 | if (p[pos] == ',') { | |
3059 | if (qemu_opts_do_parse(opts, p+pos+1, NULL) != 0) | |
3060 | goto fail; | |
3061 | } | |
3062 | if (strstart(filename, "telnet:", &p)) | |
3063 | qemu_opt_set(opts, "telnet", "on"); | |
3064 | return opts; | |
3065 | } | |
3066 | if (strstart(filename, "udp:", &p)) { | |
3067 | qemu_opt_set(opts, "backend", "udp"); | |
3068 | if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) { | |
3069 | host[0] = 0; | |
3070 | if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) { | |
3071 | goto fail; | |
3072 | } | |
3073 | } | |
3074 | qemu_opt_set(opts, "host", host); | |
3075 | qemu_opt_set(opts, "port", port); | |
3076 | if (p[pos] == '@') { | |
3077 | p += pos + 1; | |
3078 | if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) { | |
3079 | host[0] = 0; | |
3080 | if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) { | |
3081 | goto fail; | |
3082 | } | |
3083 | } | |
3084 | qemu_opt_set(opts, "localaddr", host); | |
3085 | qemu_opt_set(opts, "localport", port); | |
3086 | } | |
3087 | return opts; | |
3088 | } | |
3089 | if (strstart(filename, "unix:", &p)) { | |
3090 | qemu_opt_set(opts, "backend", "socket"); | |
3091 | if (qemu_opts_do_parse(opts, p, "path") != 0) | |
3092 | goto fail; | |
3093 | return opts; | |
3094 | } | |
3095 | if (strstart(filename, "/dev/parport", NULL) || | |
3096 | strstart(filename, "/dev/ppi", NULL)) { | |
3097 | qemu_opt_set(opts, "backend", "parport"); | |
3098 | qemu_opt_set(opts, "path", filename); | |
3099 | return opts; | |
3100 | } | |
3101 | if (strstart(filename, "/dev/", NULL)) { | |
3102 | qemu_opt_set(opts, "backend", "tty"); | |
3103 | qemu_opt_set(opts, "path", filename); | |
3104 | return opts; | |
3105 | } | |
3106 | ||
3107 | fail: | |
3108 | qemu_opts_del(opts); | |
3109 | return NULL; | |
3110 | } | |
3111 | ||
3112 | static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend, | |
3113 | Error **errp) | |
3114 | { | |
3115 | const char *path = qemu_opt_get(opts, "path"); | |
3116 | ||
3117 | if (path == NULL) { | |
3118 | error_setg(errp, "chardev: file: no filename given"); | |
3119 | return; | |
3120 | } | |
3121 | backend->file = g_new0(ChardevFile, 1); | |
3122 | backend->file->out = g_strdup(path); | |
3123 | } | |
3124 | ||
3125 | static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend, | |
3126 | Error **errp) | |
3127 | { | |
3128 | backend->stdio = g_new0(ChardevStdio, 1); | |
3129 | backend->stdio->has_signal = true; | |
3130 | backend->stdio->signal = | |
3131 | qemu_opt_get_bool(opts, "signal", display_type != DT_NOGRAPHIC); | |
3132 | } | |
3133 | ||
3134 | static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend, | |
3135 | Error **errp) | |
3136 | { | |
3137 | const char *device = qemu_opt_get(opts, "path"); | |
3138 | ||
3139 | if (device == NULL) { | |
3140 | error_setg(errp, "chardev: serial/tty: no device path given"); | |
3141 | return; | |
3142 | } | |
3143 | backend->serial = g_new0(ChardevHostdev, 1); | |
3144 | backend->serial->device = g_strdup(device); | |
3145 | } | |
3146 | ||
3147 | static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend, | |
3148 | Error **errp) | |
3149 | { | |
3150 | const char *device = qemu_opt_get(opts, "path"); | |
3151 | ||
3152 | if (device == NULL) { | |
3153 | error_setg(errp, "chardev: parallel: no device path given"); | |
3154 | return; | |
3155 | } | |
3156 | backend->parallel = g_new0(ChardevHostdev, 1); | |
3157 | backend->parallel->device = g_strdup(device); | |
3158 | } | |
3159 | ||
3160 | static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend, | |
3161 | Error **errp) | |
3162 | { | |
3163 | const char *device = qemu_opt_get(opts, "path"); | |
3164 | ||
3165 | if (device == NULL) { | |
3166 | error_setg(errp, "chardev: pipe: no device path given"); | |
3167 | return; | |
3168 | } | |
3169 | backend->pipe = g_new0(ChardevHostdev, 1); | |
3170 | backend->pipe->device = g_strdup(device); | |
3171 | } | |
3172 | ||
3173 | static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend, | |
3174 | Error **errp) | |
3175 | { | |
3176 | int val; | |
3177 | ||
3178 | backend->memory = g_new0(ChardevRingbuf, 1); | |
3179 | ||
3180 | val = qemu_opt_get_number(opts, "size", 0); | |
3181 | if (val != 0) { | |
3182 | backend->memory->has_size = true; | |
3183 | backend->memory->size = val; | |
3184 | } | |
3185 | } | |
3186 | ||
3187 | typedef struct CharDriver { | |
3188 | const char *name; | |
3189 | /* old, pre qapi */ | |
3190 | CharDriverState *(*open)(QemuOpts *opts); | |
3191 | /* new, qapi-based */ | |
3192 | int kind; | |
3193 | void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp); | |
3194 | } CharDriver; | |
3195 | ||
3196 | static GSList *backends; | |
3197 | ||
3198 | void register_char_driver(const char *name, CharDriverState *(*open)(QemuOpts *)) | |
3199 | { | |
3200 | CharDriver *s; | |
3201 | ||
3202 | s = g_malloc0(sizeof(*s)); | |
3203 | s->name = g_strdup(name); | |
3204 | s->open = open; | |
3205 | ||
3206 | backends = g_slist_append(backends, s); | |
3207 | } | |
3208 | ||
3209 | void register_char_driver_qapi(const char *name, int kind, | |
3210 | void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp)) | |
3211 | { | |
3212 | CharDriver *s; | |
3213 | ||
3214 | s = g_malloc0(sizeof(*s)); | |
3215 | s->name = g_strdup(name); | |
3216 | s->kind = kind; | |
3217 | s->parse = parse; | |
3218 | ||
3219 | backends = g_slist_append(backends, s); | |
3220 | } | |
3221 | ||
3222 | CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts, | |
3223 | void (*init)(struct CharDriverState *s), | |
3224 | Error **errp) | |
3225 | { | |
3226 | CharDriver *cd; | |
3227 | CharDriverState *chr; | |
3228 | GSList *i; | |
3229 | ||
3230 | if (qemu_opts_id(opts) == NULL) { | |
3231 | error_setg(errp, "chardev: no id specified"); | |
3232 | goto err; | |
3233 | } | |
3234 | ||
3235 | if (qemu_opt_get(opts, "backend") == NULL) { | |
3236 | error_setg(errp, "chardev: \"%s\" missing backend", | |
3237 | qemu_opts_id(opts)); | |
3238 | goto err; | |
3239 | } | |
3240 | for (i = backends; i; i = i->next) { | |
3241 | cd = i->data; | |
3242 | ||
3243 | if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) { | |
3244 | break; | |
3245 | } | |
3246 | } | |
3247 | if (i == NULL) { | |
3248 | error_setg(errp, "chardev: backend \"%s\" not found", | |
3249 | qemu_opt_get(opts, "backend")); | |
3250 | return NULL; | |
3251 | } | |
3252 | ||
3253 | if (!cd->open) { | |
3254 | /* using new, qapi init */ | |
3255 | ChardevBackend *backend = g_new0(ChardevBackend, 1); | |
3256 | ChardevReturn *ret = NULL; | |
3257 | const char *id = qemu_opts_id(opts); | |
3258 | const char *bid = NULL; | |
3259 | ||
3260 | if (qemu_opt_get_bool(opts, "mux", 0)) { | |
3261 | bid = g_strdup_printf("%s-base", id); | |
3262 | } | |
3263 | ||
3264 | chr = NULL; | |
3265 | backend->kind = cd->kind; | |
3266 | if (cd->parse) { | |
3267 | cd->parse(opts, backend, errp); | |
3268 | if (error_is_set(errp)) { | |
3269 | goto qapi_out; | |
3270 | } | |
3271 | } | |
3272 | ret = qmp_chardev_add(bid ? bid : id, backend, errp); | |
3273 | if (error_is_set(errp)) { | |
3274 | goto qapi_out; | |
3275 | } | |
3276 | ||
3277 | if (bid) { | |
3278 | qapi_free_ChardevBackend(backend); | |
3279 | qapi_free_ChardevReturn(ret); | |
3280 | backend = g_new0(ChardevBackend, 1); | |
3281 | backend->mux = g_new0(ChardevMux, 1); | |
3282 | backend->kind = CHARDEV_BACKEND_KIND_MUX; | |
3283 | backend->mux->chardev = g_strdup(bid); | |
3284 | ret = qmp_chardev_add(id, backend, errp); | |
3285 | if (error_is_set(errp)) { | |
3286 | goto qapi_out; | |
3287 | } | |
3288 | } | |
3289 | ||
3290 | chr = qemu_chr_find(id); | |
3291 | ||
3292 | qapi_out: | |
3293 | qapi_free_ChardevBackend(backend); | |
3294 | qapi_free_ChardevReturn(ret); | |
3295 | return chr; | |
3296 | } | |
3297 | ||
3298 | chr = cd->open(opts); | |
3299 | if (!chr) { | |
3300 | error_setg(errp, "chardev: opening backend \"%s\" failed", | |
3301 | qemu_opt_get(opts, "backend")); | |
3302 | goto err; | |
3303 | } | |
3304 | ||
3305 | if (!chr->filename) | |
3306 | chr->filename = g_strdup(qemu_opt_get(opts, "backend")); | |
3307 | chr->init = init; | |
3308 | QTAILQ_INSERT_TAIL(&chardevs, chr, next); | |
3309 | ||
3310 | if (qemu_opt_get_bool(opts, "mux", 0)) { | |
3311 | CharDriverState *base = chr; | |
3312 | int len = strlen(qemu_opts_id(opts)) + 6; | |
3313 | base->label = g_malloc(len); | |
3314 | snprintf(base->label, len, "%s-base", qemu_opts_id(opts)); | |
3315 | chr = qemu_chr_open_mux(base); | |
3316 | chr->filename = base->filename; | |
3317 | chr->avail_connections = MAX_MUX; | |
3318 | QTAILQ_INSERT_TAIL(&chardevs, chr, next); | |
3319 | } else { | |
3320 | chr->avail_connections = 1; | |
3321 | } | |
3322 | chr->label = g_strdup(qemu_opts_id(opts)); | |
3323 | chr->opts = opts; | |
3324 | return chr; | |
3325 | ||
3326 | err: | |
3327 | qemu_opts_del(opts); | |
3328 | return NULL; | |
3329 | } | |
3330 | ||
3331 | CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s)) | |
3332 | { | |
3333 | const char *p; | |
3334 | CharDriverState *chr; | |
3335 | QemuOpts *opts; | |
3336 | Error *err = NULL; | |
3337 | ||
3338 | if (strstart(filename, "chardev:", &p)) { | |
3339 | return qemu_chr_find(p); | |
3340 | } | |
3341 | ||
3342 | opts = qemu_chr_parse_compat(label, filename); | |
3343 | if (!opts) | |
3344 | return NULL; | |
3345 | ||
3346 | chr = qemu_chr_new_from_opts(opts, init, &err); | |
3347 | if (error_is_set(&err)) { | |
3348 | fprintf(stderr, "%s\n", error_get_pretty(err)); | |
3349 | error_free(err); | |
3350 | } | |
3351 | if (chr && qemu_opt_get_bool(opts, "mux", 0)) { | |
3352 | qemu_chr_fe_claim_no_fail(chr); | |
3353 | monitor_init(chr, MONITOR_USE_READLINE); | |
3354 | } | |
3355 | return chr; | |
3356 | } | |
3357 | ||
3358 | void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo) | |
3359 | { | |
3360 | if (chr->chr_set_echo) { | |
3361 | chr->chr_set_echo(chr, echo); | |
3362 | } | |
3363 | } | |
3364 | ||
3365 | void qemu_chr_fe_set_open(struct CharDriverState *chr, int fe_open) | |
3366 | { | |
3367 | if (chr->fe_open == fe_open) { | |
3368 | return; | |
3369 | } | |
3370 | chr->fe_open = fe_open; | |
3371 | if (chr->chr_set_fe_open) { | |
3372 | chr->chr_set_fe_open(chr, fe_open); | |
3373 | } | |
3374 | } | |
3375 | ||
3376 | int qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond, | |
3377 | GIOFunc func, void *user_data) | |
3378 | { | |
3379 | GSource *src; | |
3380 | guint tag; | |
3381 | ||
3382 | if (s->chr_add_watch == NULL) { | |
3383 | return -ENOSYS; | |
3384 | } | |
3385 | ||
3386 | src = s->chr_add_watch(s, cond); | |
3387 | g_source_set_callback(src, (GSourceFunc)func, user_data, NULL); | |
3388 | tag = g_source_attach(src, NULL); | |
3389 | g_source_unref(src); | |
3390 | ||
3391 | return tag; | |
3392 | } | |
3393 | ||
3394 | int qemu_chr_fe_claim(CharDriverState *s) | |
3395 | { | |
3396 | if (s->avail_connections < 1) { | |
3397 | return -1; | |
3398 | } | |
3399 | s->avail_connections--; | |
3400 | return 0; | |
3401 | } | |
3402 | ||
3403 | void qemu_chr_fe_claim_no_fail(CharDriverState *s) | |
3404 | { | |
3405 | if (qemu_chr_fe_claim(s) != 0) { | |
3406 | fprintf(stderr, "%s: error chardev \"%s\" already used\n", | |
3407 | __func__, s->label); | |
3408 | exit(1); | |
3409 | } | |
3410 | } | |
3411 | ||
3412 | void qemu_chr_fe_release(CharDriverState *s) | |
3413 | { | |
3414 | s->avail_connections++; | |
3415 | } | |
3416 | ||
3417 | void qemu_chr_delete(CharDriverState *chr) | |
3418 | { | |
3419 | QTAILQ_REMOVE(&chardevs, chr, next); | |
3420 | if (chr->chr_close) { | |
3421 | chr->chr_close(chr); | |
3422 | } | |
3423 | g_free(chr->filename); | |
3424 | g_free(chr->label); | |
3425 | if (chr->opts) { | |
3426 | qemu_opts_del(chr->opts); | |
3427 | } | |
3428 | g_free(chr); | |
3429 | } | |
3430 | ||
3431 | ChardevInfoList *qmp_query_chardev(Error **errp) | |
3432 | { | |
3433 | ChardevInfoList *chr_list = NULL; | |
3434 | CharDriverState *chr; | |
3435 | ||
3436 | QTAILQ_FOREACH(chr, &chardevs, next) { | |
3437 | ChardevInfoList *info = g_malloc0(sizeof(*info)); | |
3438 | info->value = g_malloc0(sizeof(*info->value)); | |
3439 | info->value->label = g_strdup(chr->label); | |
3440 | info->value->filename = g_strdup(chr->filename); | |
3441 | ||
3442 | info->next = chr_list; | |
3443 | chr_list = info; | |
3444 | } | |
3445 | ||
3446 | return chr_list; | |
3447 | } | |
3448 | ||
3449 | CharDriverState *qemu_chr_find(const char *name) | |
3450 | { | |
3451 | CharDriverState *chr; | |
3452 | ||
3453 | QTAILQ_FOREACH(chr, &chardevs, next) { | |
3454 | if (strcmp(chr->label, name) != 0) | |
3455 | continue; | |
3456 | return chr; | |
3457 | } | |
3458 | return NULL; | |
3459 | } | |
3460 | ||
3461 | /* Get a character (serial) device interface. */ | |
3462 | CharDriverState *qemu_char_get_next_serial(void) | |
3463 | { | |
3464 | static int next_serial; | |
3465 | CharDriverState *chr; | |
3466 | ||
3467 | /* FIXME: This function needs to go away: use chardev properties! */ | |
3468 | ||
3469 | while (next_serial < MAX_SERIAL_PORTS && serial_hds[next_serial]) { | |
3470 | chr = serial_hds[next_serial++]; | |
3471 | qemu_chr_fe_claim_no_fail(chr); | |
3472 | return chr; | |
3473 | } | |
3474 | return NULL; | |
3475 | } | |
3476 | ||
3477 | QemuOptsList qemu_chardev_opts = { | |
3478 | .name = "chardev", | |
3479 | .implied_opt_name = "backend", | |
3480 | .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head), | |
3481 | .desc = { | |
3482 | { | |
3483 | .name = "backend", | |
3484 | .type = QEMU_OPT_STRING, | |
3485 | },{ | |
3486 | .name = "path", | |
3487 | .type = QEMU_OPT_STRING, | |
3488 | },{ | |
3489 | .name = "host", | |
3490 | .type = QEMU_OPT_STRING, | |
3491 | },{ | |
3492 | .name = "port", | |
3493 | .type = QEMU_OPT_STRING, | |
3494 | },{ | |
3495 | .name = "localaddr", | |
3496 | .type = QEMU_OPT_STRING, | |
3497 | },{ | |
3498 | .name = "localport", | |
3499 | .type = QEMU_OPT_STRING, | |
3500 | },{ | |
3501 | .name = "to", | |
3502 | .type = QEMU_OPT_NUMBER, | |
3503 | },{ | |
3504 | .name = "ipv4", | |
3505 | .type = QEMU_OPT_BOOL, | |
3506 | },{ | |
3507 | .name = "ipv6", | |
3508 | .type = QEMU_OPT_BOOL, | |
3509 | },{ | |
3510 | .name = "wait", | |
3511 | .type = QEMU_OPT_BOOL, | |
3512 | },{ | |
3513 | .name = "server", | |
3514 | .type = QEMU_OPT_BOOL, | |
3515 | },{ | |
3516 | .name = "delay", | |
3517 | .type = QEMU_OPT_BOOL, | |
3518 | },{ | |
3519 | .name = "telnet", | |
3520 | .type = QEMU_OPT_BOOL, | |
3521 | },{ | |
3522 | .name = "width", | |
3523 | .type = QEMU_OPT_NUMBER, | |
3524 | },{ | |
3525 | .name = "height", | |
3526 | .type = QEMU_OPT_NUMBER, | |
3527 | },{ | |
3528 | .name = "cols", | |
3529 | .type = QEMU_OPT_NUMBER, | |
3530 | },{ | |
3531 | .name = "rows", | |
3532 | .type = QEMU_OPT_NUMBER, | |
3533 | },{ | |
3534 | .name = "mux", | |
3535 | .type = QEMU_OPT_BOOL, | |
3536 | },{ | |
3537 | .name = "signal", | |
3538 | .type = QEMU_OPT_BOOL, | |
3539 | },{ | |
3540 | .name = "name", | |
3541 | .type = QEMU_OPT_STRING, | |
3542 | },{ | |
3543 | .name = "debug", | |
3544 | .type = QEMU_OPT_NUMBER, | |
3545 | },{ | |
3546 | .name = "size", | |
3547 | .type = QEMU_OPT_SIZE, | |
3548 | }, | |
3549 | { /* end of list */ } | |
3550 | }, | |
3551 | }; | |
3552 | ||
3553 | #ifdef _WIN32 | |
3554 | ||
3555 | static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp) | |
3556 | { | |
3557 | HANDLE out; | |
3558 | ||
3559 | if (file->in) { | |
3560 | error_setg(errp, "input file not supported"); | |
3561 | return NULL; | |
3562 | } | |
3563 | ||
3564 | out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL, | |
3565 | OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL); | |
3566 | if (out == INVALID_HANDLE_VALUE) { | |
3567 | error_setg(errp, "open %s failed", file->out); | |
3568 | return NULL; | |
3569 | } | |
3570 | return qemu_chr_open_win_file(out); | |
3571 | } | |
3572 | ||
3573 | static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial, | |
3574 | Error **errp) | |
3575 | { | |
3576 | return qemu_chr_open_win_path(serial->device); | |
3577 | } | |
3578 | ||
3579 | static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel, | |
3580 | Error **errp) | |
3581 | { | |
3582 | error_setg(errp, "character device backend type 'parallel' not supported"); | |
3583 | return NULL; | |
3584 | } | |
3585 | ||
3586 | #else /* WIN32 */ | |
3587 | ||
3588 | static int qmp_chardev_open_file_source(char *src, int flags, | |
3589 | Error **errp) | |
3590 | { | |
3591 | int fd = -1; | |
3592 | ||
3593 | TFR(fd = qemu_open(src, flags, 0666)); | |
3594 | if (fd == -1) { | |
3595 | error_setg(errp, "open %s: %s", src, strerror(errno)); | |
3596 | } | |
3597 | return fd; | |
3598 | } | |
3599 | ||
3600 | static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp) | |
3601 | { | |
3602 | int flags, in = -1, out = -1; | |
3603 | ||
3604 | flags = O_WRONLY | O_TRUNC | O_CREAT | O_BINARY; | |
3605 | out = qmp_chardev_open_file_source(file->out, flags, errp); | |
3606 | if (error_is_set(errp)) { | |
3607 | return NULL; | |
3608 | } | |
3609 | ||
3610 | if (file->in) { | |
3611 | flags = O_RDONLY; | |
3612 | in = qmp_chardev_open_file_source(file->in, flags, errp); | |
3613 | if (error_is_set(errp)) { | |
3614 | qemu_close(out); | |
3615 | return NULL; | |
3616 | } | |
3617 | } | |
3618 | ||
3619 | return qemu_chr_open_fd(in, out); | |
3620 | } | |
3621 | ||
3622 | static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial, | |
3623 | Error **errp) | |
3624 | { | |
3625 | #ifdef HAVE_CHARDEV_TTY | |
3626 | int fd; | |
3627 | ||
3628 | fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp); | |
3629 | if (error_is_set(errp)) { | |
3630 | return NULL; | |
3631 | } | |
3632 | qemu_set_nonblock(fd); | |
3633 | return qemu_chr_open_tty_fd(fd); | |
3634 | #else | |
3635 | error_setg(errp, "character device backend type 'serial' not supported"); | |
3636 | return NULL; | |
3637 | #endif | |
3638 | } | |
3639 | ||
3640 | static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel, | |
3641 | Error **errp) | |
3642 | { | |
3643 | #ifdef HAVE_CHARDEV_PARPORT | |
3644 | int fd; | |
3645 | ||
3646 | fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp); | |
3647 | if (error_is_set(errp)) { | |
3648 | return NULL; | |
3649 | } | |
3650 | return qemu_chr_open_pp_fd(fd); | |
3651 | #else | |
3652 | error_setg(errp, "character device backend type 'parallel' not supported"); | |
3653 | return NULL; | |
3654 | #endif | |
3655 | } | |
3656 | ||
3657 | #endif /* WIN32 */ | |
3658 | ||
3659 | static CharDriverState *qmp_chardev_open_socket(ChardevSocket *sock, | |
3660 | Error **errp) | |
3661 | { | |
3662 | SocketAddress *addr = sock->addr; | |
3663 | bool do_nodelay = sock->has_nodelay ? sock->nodelay : false; | |
3664 | bool is_listen = sock->has_server ? sock->server : true; | |
3665 | bool is_telnet = sock->has_telnet ? sock->telnet : false; | |
3666 | bool is_waitconnect = sock->has_wait ? sock->wait : false; | |
3667 | int fd; | |
3668 | ||
3669 | if (is_listen) { | |
3670 | fd = socket_listen(addr, errp); | |
3671 | } else { | |
3672 | fd = socket_connect(addr, errp, NULL, NULL); | |
3673 | } | |
3674 | if (error_is_set(errp)) { | |
3675 | return NULL; | |
3676 | } | |
3677 | return qemu_chr_open_socket_fd(fd, do_nodelay, is_listen, | |
3678 | is_telnet, is_waitconnect, errp); | |
3679 | } | |
3680 | ||
3681 | static CharDriverState *qmp_chardev_open_dgram(ChardevDgram *dgram, | |
3682 | Error **errp) | |
3683 | { | |
3684 | int fd; | |
3685 | ||
3686 | fd = socket_dgram(dgram->remote, dgram->local, errp); | |
3687 | if (error_is_set(errp)) { | |
3688 | return NULL; | |
3689 | } | |
3690 | return qemu_chr_open_udp_fd(fd); | |
3691 | } | |
3692 | ||
3693 | ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend, | |
3694 | Error **errp) | |
3695 | { | |
3696 | ChardevReturn *ret = g_new0(ChardevReturn, 1); | |
3697 | CharDriverState *base, *chr = NULL; | |
3698 | ||
3699 | chr = qemu_chr_find(id); | |
3700 | if (chr) { | |
3701 | error_setg(errp, "Chardev '%s' already exists", id); | |
3702 | g_free(ret); | |
3703 | return NULL; | |
3704 | } | |
3705 | ||
3706 | switch (backend->kind) { | |
3707 | case CHARDEV_BACKEND_KIND_FILE: | |
3708 | chr = qmp_chardev_open_file(backend->file, errp); | |
3709 | break; | |
3710 | case CHARDEV_BACKEND_KIND_SERIAL: | |
3711 | chr = qmp_chardev_open_serial(backend->serial, errp); | |
3712 | break; | |
3713 | case CHARDEV_BACKEND_KIND_PARALLEL: | |
3714 | chr = qmp_chardev_open_parallel(backend->parallel, errp); | |
3715 | break; | |
3716 | case CHARDEV_BACKEND_KIND_PIPE: | |
3717 | chr = qemu_chr_open_pipe(backend->pipe); | |
3718 | break; | |
3719 | case CHARDEV_BACKEND_KIND_SOCKET: | |
3720 | chr = qmp_chardev_open_socket(backend->socket, errp); | |
3721 | break; | |
3722 | case CHARDEV_BACKEND_KIND_DGRAM: | |
3723 | chr = qmp_chardev_open_dgram(backend->dgram, errp); | |
3724 | break; | |
3725 | #ifdef HAVE_CHARDEV_TTY | |
3726 | case CHARDEV_BACKEND_KIND_PTY: | |
3727 | chr = qemu_chr_open_pty(id, ret); | |
3728 | break; | |
3729 | #endif | |
3730 | case CHARDEV_BACKEND_KIND_NULL: | |
3731 | chr = qemu_chr_open_null(); | |
3732 | break; | |
3733 | case CHARDEV_BACKEND_KIND_MUX: | |
3734 | base = qemu_chr_find(backend->mux->chardev); | |
3735 | if (base == NULL) { | |
3736 | error_setg(errp, "mux: base chardev %s not found", | |
3737 | backend->mux->chardev); | |
3738 | break; | |
3739 | } | |
3740 | chr = qemu_chr_open_mux(base); | |
3741 | break; | |
3742 | case CHARDEV_BACKEND_KIND_MSMOUSE: | |
3743 | chr = qemu_chr_open_msmouse(); | |
3744 | break; | |
3745 | #ifdef CONFIG_BRLAPI | |
3746 | case CHARDEV_BACKEND_KIND_BRAILLE: | |
3747 | chr = chr_baum_init(); | |
3748 | break; | |
3749 | #endif | |
3750 | case CHARDEV_BACKEND_KIND_STDIO: | |
3751 | chr = qemu_chr_open_stdio(backend->stdio); | |
3752 | break; | |
3753 | #ifdef _WIN32 | |
3754 | case CHARDEV_BACKEND_KIND_CONSOLE: | |
3755 | chr = qemu_chr_open_win_con(); | |
3756 | break; | |
3757 | #endif | |
3758 | #ifdef CONFIG_SPICE | |
3759 | case CHARDEV_BACKEND_KIND_SPICEVMC: | |
3760 | chr = qemu_chr_open_spice_vmc(backend->spicevmc->type); | |
3761 | break; | |
3762 | case CHARDEV_BACKEND_KIND_SPICEPORT: | |
3763 | chr = qemu_chr_open_spice_port(backend->spiceport->fqdn); | |
3764 | break; | |
3765 | #endif | |
3766 | case CHARDEV_BACKEND_KIND_VC: | |
3767 | chr = vc_init(backend->vc); | |
3768 | break; | |
3769 | case CHARDEV_BACKEND_KIND_MEMORY: | |
3770 | chr = qemu_chr_open_ringbuf(backend->memory, errp); | |
3771 | break; | |
3772 | default: | |
3773 | error_setg(errp, "unknown chardev backend (%d)", backend->kind); | |
3774 | break; | |
3775 | } | |
3776 | ||
3777 | if (chr == NULL && !error_is_set(errp)) { | |
3778 | error_setg(errp, "Failed to create chardev"); | |
3779 | } | |
3780 | if (chr) { | |
3781 | chr->label = g_strdup(id); | |
3782 | chr->avail_connections = | |
3783 | (backend->kind == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1; | |
3784 | QTAILQ_INSERT_TAIL(&chardevs, chr, next); | |
3785 | return ret; | |
3786 | } else { | |
3787 | g_free(ret); | |
3788 | return NULL; | |
3789 | } | |
3790 | } | |
3791 | ||
3792 | void qmp_chardev_remove(const char *id, Error **errp) | |
3793 | { | |
3794 | CharDriverState *chr; | |
3795 | ||
3796 | chr = qemu_chr_find(id); | |
3797 | if (NULL == chr) { | |
3798 | error_setg(errp, "Chardev '%s' not found", id); | |
3799 | return; | |
3800 | } | |
3801 | if (chr->chr_can_read || chr->chr_read || | |
3802 | chr->chr_event || chr->handler_opaque) { | |
3803 | error_setg(errp, "Chardev '%s' is busy", id); | |
3804 | return; | |
3805 | } | |
3806 | qemu_chr_delete(chr); | |
3807 | } | |
3808 | ||
3809 | static void register_types(void) | |
3810 | { | |
3811 | register_char_driver_qapi("null", CHARDEV_BACKEND_KIND_NULL, NULL); | |
3812 | register_char_driver("socket", qemu_chr_open_socket); | |
3813 | register_char_driver("udp", qemu_chr_open_udp); | |
3814 | register_char_driver_qapi("memory", CHARDEV_BACKEND_KIND_MEMORY, | |
3815 | qemu_chr_parse_ringbuf); | |
3816 | register_char_driver_qapi("file", CHARDEV_BACKEND_KIND_FILE, | |
3817 | qemu_chr_parse_file_out); | |
3818 | register_char_driver_qapi("stdio", CHARDEV_BACKEND_KIND_STDIO, | |
3819 | qemu_chr_parse_stdio); | |
3820 | register_char_driver_qapi("serial", CHARDEV_BACKEND_KIND_SERIAL, | |
3821 | qemu_chr_parse_serial); | |
3822 | register_char_driver_qapi("tty", CHARDEV_BACKEND_KIND_SERIAL, | |
3823 | qemu_chr_parse_serial); | |
3824 | register_char_driver_qapi("parallel", CHARDEV_BACKEND_KIND_PARALLEL, | |
3825 | qemu_chr_parse_parallel); | |
3826 | register_char_driver_qapi("parport", CHARDEV_BACKEND_KIND_PARALLEL, | |
3827 | qemu_chr_parse_parallel); | |
3828 | register_char_driver_qapi("pty", CHARDEV_BACKEND_KIND_PTY, NULL); | |
3829 | register_char_driver_qapi("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL); | |
3830 | register_char_driver_qapi("pipe", CHARDEV_BACKEND_KIND_PIPE, | |
3831 | qemu_chr_parse_pipe); | |
3832 | } | |
3833 | ||
3834 | type_init(register_types); |