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