root / qemu-char.c @ cba933b2
History | View | Annotate | Download (99.3 kB)
1 |
/*
|
---|---|
2 |
* QEMU System Emulator
|
3 |
*
|
4 |
* Copyright (c) 2003-2008 Fabrice Bellard
|
5 |
*
|
6 |
* Permission is hereby granted, free of charge, to any person obtaining a copy
|
7 |
* of this software and associated documentation files (the "Software"), to deal
|
8 |
* in the Software without restriction, including without limitation the rights
|
9 |
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
10 |
* copies of the Software, and to permit persons to whom the Software is
|
11 |
* furnished to do so, subject to the following conditions:
|
12 |
*
|
13 |
* The above copyright notice and this permission notice shall be included in
|
14 |
* all copies or substantial portions of the Software.
|
15 |
*
|
16 |
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
17 |
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
18 |
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
|
19 |
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
20 |
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
21 |
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
22 |
* THE SOFTWARE.
|
23 |
*/
|
24 |
#include "qemu-common.h" |
25 |
#include "monitor/monitor.h" |
26 |
#include "ui/console.h" |
27 |
#include "sysemu/sysemu.h" |
28 |
#include "qemu/timer.h" |
29 |
#include "sysemu/char.h" |
30 |
#include "hw/usb.h" |
31 |
#include "qmp-commands.h" |
32 |
|
33 |
#include <unistd.h> |
34 |
#include <fcntl.h> |
35 |
#include <time.h> |
36 |
#include <errno.h> |
37 |
#include <sys/time.h> |
38 |
#include <zlib.h> |
39 |
|
40 |
#ifndef _WIN32
|
41 |
#include <sys/times.h> |
42 |
#include <sys/wait.h> |
43 |
#include <termios.h> |
44 |
#include <sys/mman.h> |
45 |
#include <sys/ioctl.h> |
46 |
#include <sys/resource.h> |
47 |
#include <sys/socket.h> |
48 |
#include <netinet/in.h> |
49 |
#include <net/if.h> |
50 |
#include <arpa/inet.h> |
51 |
#include <dirent.h> |
52 |
#include <netdb.h> |
53 |
#include <sys/select.h> |
54 |
#ifdef CONFIG_BSD
|
55 |
#include <sys/stat.h> |
56 |
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__)
|
57 |
#include <dev/ppbus/ppi.h> |
58 |
#include <dev/ppbus/ppbconf.h> |
59 |
#elif defined(__DragonFly__)
|
60 |
#include <dev/misc/ppi/ppi.h> |
61 |
#include <bus/ppbus/ppbconf.h> |
62 |
#endif
|
63 |
#else
|
64 |
#ifdef __linux__
|
65 |
#include <linux/ppdev.h> |
66 |
#include <linux/parport.h> |
67 |
#endif
|
68 |
#ifdef __sun__
|
69 |
#include <sys/stat.h> |
70 |
#include <sys/ethernet.h> |
71 |
#include <sys/sockio.h> |
72 |
#include <netinet/arp.h> |
73 |
#include <netinet/in.h> |
74 |
#include <netinet/in_systm.h> |
75 |
#include <netinet/ip.h> |
76 |
#include <netinet/ip_icmp.h> // must come after ip.h |
77 |
#include <netinet/udp.h> |
78 |
#include <netinet/tcp.h> |
79 |
#endif
|
80 |
#endif
|
81 |
#endif
|
82 |
|
83 |
#include "qemu/sockets.h" |
84 |
#include "ui/qemu-spice.h" |
85 |
|
86 |
#define READ_BUF_LEN 4096 |
87 |
|
88 |
/***********************************************************/
|
89 |
/* character device */
|
90 |
|
91 |
static QTAILQ_HEAD(CharDriverStateHead, CharDriverState) chardevs =
|
92 |
QTAILQ_HEAD_INITIALIZER(chardevs); |
93 |
|
94 |
void qemu_chr_be_event(CharDriverState *s, int event) |
95 |
{ |
96 |
/* Keep track if the char device is open */
|
97 |
switch (event) {
|
98 |
case CHR_EVENT_OPENED:
|
99 |
s->be_open = 1;
|
100 |
break;
|
101 |
case CHR_EVENT_CLOSED:
|
102 |
s->be_open = 0;
|
103 |
break;
|
104 |
} |
105 |
|
106 |
if (!s->chr_event)
|
107 |
return;
|
108 |
s->chr_event(s->handler_opaque, event); |
109 |
} |
110 |
|
111 |
void qemu_chr_be_generic_open(CharDriverState *s)
|
112 |
{ |
113 |
qemu_chr_be_event(s, CHR_EVENT_OPENED); |
114 |
} |
115 |
|
116 |
int qemu_chr_fe_write(CharDriverState *s, const uint8_t *buf, int len) |
117 |
{ |
118 |
return s->chr_write(s, buf, len);
|
119 |
} |
120 |
|
121 |
int qemu_chr_fe_write_all(CharDriverState *s, const uint8_t *buf, int len) |
122 |
{ |
123 |
int offset = 0; |
124 |
int res;
|
125 |
|
126 |
while (offset < len) {
|
127 |
do {
|
128 |
res = s->chr_write(s, buf + offset, len - offset); |
129 |
if (res == -1 && errno == EAGAIN) { |
130 |
g_usleep(100);
|
131 |
} |
132 |
} while (res == -1 && errno == EAGAIN); |
133 |
|
134 |
if (res == 0) { |
135 |
break;
|
136 |
} |
137 |
|
138 |
if (res < 0) { |
139 |
return res;
|
140 |
} |
141 |
|
142 |
offset += res; |
143 |
} |
144 |
|
145 |
return offset;
|
146 |
} |
147 |
|
148 |
int qemu_chr_fe_ioctl(CharDriverState *s, int cmd, void *arg) |
149 |
{ |
150 |
if (!s->chr_ioctl)
|
151 |
return -ENOTSUP;
|
152 |
return s->chr_ioctl(s, cmd, arg);
|
153 |
} |
154 |
|
155 |
int qemu_chr_be_can_write(CharDriverState *s)
|
156 |
{ |
157 |
if (!s->chr_can_read)
|
158 |
return 0; |
159 |
return s->chr_can_read(s->handler_opaque);
|
160 |
} |
161 |
|
162 |
void qemu_chr_be_write(CharDriverState *s, uint8_t *buf, int len) |
163 |
{ |
164 |
if (s->chr_read) {
|
165 |
s->chr_read(s->handler_opaque, buf, len); |
166 |
} |
167 |
} |
168 |
|
169 |
int qemu_chr_fe_get_msgfd(CharDriverState *s)
|
170 |
{ |
171 |
return s->get_msgfd ? s->get_msgfd(s) : -1; |
172 |
} |
173 |
|
174 |
int qemu_chr_add_client(CharDriverState *s, int fd) |
175 |
{ |
176 |
return s->chr_add_client ? s->chr_add_client(s, fd) : -1; |
177 |
} |
178 |
|
179 |
void qemu_chr_accept_input(CharDriverState *s)
|
180 |
{ |
181 |
if (s->chr_accept_input)
|
182 |
s->chr_accept_input(s); |
183 |
qemu_notify_event(); |
184 |
} |
185 |
|
186 |
void qemu_chr_fe_printf(CharDriverState *s, const char *fmt, ...) |
187 |
{ |
188 |
char buf[READ_BUF_LEN];
|
189 |
va_list ap; |
190 |
va_start(ap, fmt); |
191 |
vsnprintf(buf, sizeof(buf), fmt, ap);
|
192 |
qemu_chr_fe_write(s, (uint8_t *)buf, strlen(buf)); |
193 |
va_end(ap); |
194 |
} |
195 |
|
196 |
static void remove_fd_in_watch(CharDriverState *chr); |
197 |
|
198 |
void qemu_chr_add_handlers(CharDriverState *s,
|
199 |
IOCanReadHandler *fd_can_read, |
200 |
IOReadHandler *fd_read, |
201 |
IOEventHandler *fd_event, |
202 |
void *opaque)
|
203 |
{ |
204 |
int fe_open;
|
205 |
|
206 |
if (!opaque && !fd_can_read && !fd_read && !fd_event) {
|
207 |
fe_open = 0;
|
208 |
remove_fd_in_watch(s); |
209 |
} else {
|
210 |
fe_open = 1;
|
211 |
} |
212 |
s->chr_can_read = fd_can_read; |
213 |
s->chr_read = fd_read; |
214 |
s->chr_event = fd_event; |
215 |
s->handler_opaque = opaque; |
216 |
if (s->chr_update_read_handler)
|
217 |
s->chr_update_read_handler(s); |
218 |
|
219 |
if (!s->explicit_fe_open) {
|
220 |
qemu_chr_fe_set_open(s, fe_open); |
221 |
} |
222 |
|
223 |
/* We're connecting to an already opened device, so let's make sure we
|
224 |
also get the open event */
|
225 |
if (fe_open && s->be_open) {
|
226 |
qemu_chr_be_generic_open(s); |
227 |
} |
228 |
} |
229 |
|
230 |
static int null_chr_write(CharDriverState *chr, const uint8_t *buf, int len) |
231 |
{ |
232 |
return len;
|
233 |
} |
234 |
|
235 |
static CharDriverState *qemu_chr_open_null(void) |
236 |
{ |
237 |
CharDriverState *chr; |
238 |
|
239 |
chr = g_malloc0(sizeof(CharDriverState));
|
240 |
chr->chr_write = null_chr_write; |
241 |
chr->explicit_be_open = true;
|
242 |
return chr;
|
243 |
} |
244 |
|
245 |
/* MUX driver for serial I/O splitting */
|
246 |
#define MAX_MUX 4 |
247 |
#define MUX_BUFFER_SIZE 32 /* Must be a power of 2. */ |
248 |
#define MUX_BUFFER_MASK (MUX_BUFFER_SIZE - 1) |
249 |
typedef struct { |
250 |
IOCanReadHandler *chr_can_read[MAX_MUX]; |
251 |
IOReadHandler *chr_read[MAX_MUX]; |
252 |
IOEventHandler *chr_event[MAX_MUX]; |
253 |
void *ext_opaque[MAX_MUX];
|
254 |
CharDriverState *drv; |
255 |
int focus;
|
256 |
int mux_cnt;
|
257 |
int term_got_escape;
|
258 |
int max_size;
|
259 |
/* Intermediate input buffer allows to catch escape sequences even if the
|
260 |
currently active device is not accepting any input - but only until it
|
261 |
is full as well. */
|
262 |
unsigned char buffer[MAX_MUX][MUX_BUFFER_SIZE]; |
263 |
int prod[MAX_MUX];
|
264 |
int cons[MAX_MUX];
|
265 |
int timestamps;
|
266 |
int linestart;
|
267 |
int64_t timestamps_start; |
268 |
} MuxDriver; |
269 |
|
270 |
|
271 |
static int mux_chr_write(CharDriverState *chr, const uint8_t *buf, int len) |
272 |
{ |
273 |
MuxDriver *d = chr->opaque; |
274 |
int ret;
|
275 |
if (!d->timestamps) {
|
276 |
ret = d->drv->chr_write(d->drv, buf, len); |
277 |
} else {
|
278 |
int i;
|
279 |
|
280 |
ret = 0;
|
281 |
for (i = 0; i < len; i++) { |
282 |
if (d->linestart) {
|
283 |
char buf1[64]; |
284 |
int64_t ti; |
285 |
int secs;
|
286 |
|
287 |
ti = qemu_clock_get_ms(QEMU_CLOCK_REALTIME); |
288 |
if (d->timestamps_start == -1) |
289 |
d->timestamps_start = ti; |
290 |
ti -= d->timestamps_start; |
291 |
secs = ti / 1000;
|
292 |
snprintf(buf1, sizeof(buf1),
|
293 |
"[%02d:%02d:%02d.%03d] ",
|
294 |
secs / 3600,
|
295 |
(secs / 60) % 60, |
296 |
secs % 60,
|
297 |
(int)(ti % 1000)); |
298 |
d->drv->chr_write(d->drv, (uint8_t *)buf1, strlen(buf1)); |
299 |
d->linestart = 0;
|
300 |
} |
301 |
ret += d->drv->chr_write(d->drv, buf+i, 1);
|
302 |
if (buf[i] == '\n') { |
303 |
d->linestart = 1;
|
304 |
} |
305 |
} |
306 |
} |
307 |
return ret;
|
308 |
} |
309 |
|
310 |
static const char * const mux_help[] = { |
311 |
"% h print this help\n\r",
|
312 |
"% x exit emulator\n\r",
|
313 |
"% s save disk data back to file (if -snapshot)\n\r",
|
314 |
"% t toggle console timestamps\n\r"
|
315 |
"% b send break (magic sysrq)\n\r",
|
316 |
"% c switch between console and monitor\n\r",
|
317 |
"% % sends %\n\r",
|
318 |
NULL
|
319 |
}; |
320 |
|
321 |
int term_escape_char = 0x01; /* ctrl-a is used for escape */ |
322 |
static void mux_print_help(CharDriverState *chr) |
323 |
{ |
324 |
int i, j;
|
325 |
char ebuf[15] = "Escape-Char"; |
326 |
char cbuf[50] = "\n\r"; |
327 |
|
328 |
if (term_escape_char > 0 && term_escape_char < 26) { |
329 |
snprintf(cbuf, sizeof(cbuf), "\n\r"); |
330 |
snprintf(ebuf, sizeof(ebuf), "C-%c", term_escape_char - 1 + 'a'); |
331 |
} else {
|
332 |
snprintf(cbuf, sizeof(cbuf),
|
333 |
"\n\rEscape-Char set to Ascii: 0x%02x\n\r\n\r",
|
334 |
term_escape_char); |
335 |
} |
336 |
chr->chr_write(chr, (uint8_t *)cbuf, strlen(cbuf)); |
337 |
for (i = 0; mux_help[i] != NULL; i++) { |
338 |
for (j=0; mux_help[i][j] != '\0'; j++) { |
339 |
if (mux_help[i][j] == '%') |
340 |
chr->chr_write(chr, (uint8_t *)ebuf, strlen(ebuf)); |
341 |
else
|
342 |
chr->chr_write(chr, (uint8_t *)&mux_help[i][j], 1);
|
343 |
} |
344 |
} |
345 |
} |
346 |
|
347 |
static void mux_chr_send_event(MuxDriver *d, int mux_nr, int event) |
348 |
{ |
349 |
if (d->chr_event[mux_nr])
|
350 |
d->chr_event[mux_nr](d->ext_opaque[mux_nr], event); |
351 |
} |
352 |
|
353 |
static int mux_proc_byte(CharDriverState *chr, MuxDriver *d, int ch) |
354 |
{ |
355 |
if (d->term_got_escape) {
|
356 |
d->term_got_escape = 0;
|
357 |
if (ch == term_escape_char)
|
358 |
goto send_char;
|
359 |
switch(ch) {
|
360 |
case '?': |
361 |
case 'h': |
362 |
mux_print_help(chr); |
363 |
break;
|
364 |
case 'x': |
365 |
{ |
366 |
const char *term = "QEMU: Terminated\n\r"; |
367 |
chr->chr_write(chr,(uint8_t *)term,strlen(term)); |
368 |
exit(0);
|
369 |
break;
|
370 |
} |
371 |
case 's': |
372 |
bdrv_commit_all(); |
373 |
break;
|
374 |
case 'b': |
375 |
qemu_chr_be_event(chr, CHR_EVENT_BREAK); |
376 |
break;
|
377 |
case 'c': |
378 |
/* Switch to the next registered device */
|
379 |
mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT); |
380 |
d->focus++; |
381 |
if (d->focus >= d->mux_cnt)
|
382 |
d->focus = 0;
|
383 |
mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN); |
384 |
break;
|
385 |
case 't': |
386 |
d->timestamps = !d->timestamps; |
387 |
d->timestamps_start = -1;
|
388 |
d->linestart = 0;
|
389 |
break;
|
390 |
} |
391 |
} else if (ch == term_escape_char) { |
392 |
d->term_got_escape = 1;
|
393 |
} else {
|
394 |
send_char:
|
395 |
return 1; |
396 |
} |
397 |
return 0; |
398 |
} |
399 |
|
400 |
static void mux_chr_accept_input(CharDriverState *chr) |
401 |
{ |
402 |
MuxDriver *d = chr->opaque; |
403 |
int m = d->focus;
|
404 |
|
405 |
while (d->prod[m] != d->cons[m] &&
|
406 |
d->chr_can_read[m] && |
407 |
d->chr_can_read[m](d->ext_opaque[m])) { |
408 |
d->chr_read[m](d->ext_opaque[m], |
409 |
&d->buffer[m][d->cons[m]++ & MUX_BUFFER_MASK], 1);
|
410 |
} |
411 |
} |
412 |
|
413 |
static int mux_chr_can_read(void *opaque) |
414 |
{ |
415 |
CharDriverState *chr = opaque; |
416 |
MuxDriver *d = chr->opaque; |
417 |
int m = d->focus;
|
418 |
|
419 |
if ((d->prod[m] - d->cons[m]) < MUX_BUFFER_SIZE)
|
420 |
return 1; |
421 |
if (d->chr_can_read[m])
|
422 |
return d->chr_can_read[m](d->ext_opaque[m]);
|
423 |
return 0; |
424 |
} |
425 |
|
426 |
static void mux_chr_read(void *opaque, const uint8_t *buf, int size) |
427 |
{ |
428 |
CharDriverState *chr = opaque; |
429 |
MuxDriver *d = chr->opaque; |
430 |
int m = d->focus;
|
431 |
int i;
|
432 |
|
433 |
mux_chr_accept_input (opaque); |
434 |
|
435 |
for(i = 0; i < size; i++) |
436 |
if (mux_proc_byte(chr, d, buf[i])) {
|
437 |
if (d->prod[m] == d->cons[m] &&
|
438 |
d->chr_can_read[m] && |
439 |
d->chr_can_read[m](d->ext_opaque[m])) |
440 |
d->chr_read[m](d->ext_opaque[m], &buf[i], 1);
|
441 |
else
|
442 |
d->buffer[m][d->prod[m]++ & MUX_BUFFER_MASK] = buf[i]; |
443 |
} |
444 |
} |
445 |
|
446 |
static void mux_chr_event(void *opaque, int event) |
447 |
{ |
448 |
CharDriverState *chr = opaque; |
449 |
MuxDriver *d = chr->opaque; |
450 |
int i;
|
451 |
|
452 |
/* Send the event to all registered listeners */
|
453 |
for (i = 0; i < d->mux_cnt; i++) |
454 |
mux_chr_send_event(d, i, event); |
455 |
} |
456 |
|
457 |
static void mux_chr_update_read_handler(CharDriverState *chr) |
458 |
{ |
459 |
MuxDriver *d = chr->opaque; |
460 |
|
461 |
if (d->mux_cnt >= MAX_MUX) {
|
462 |
fprintf(stderr, "Cannot add I/O handlers, MUX array is full\n");
|
463 |
return;
|
464 |
} |
465 |
d->ext_opaque[d->mux_cnt] = chr->handler_opaque; |
466 |
d->chr_can_read[d->mux_cnt] = chr->chr_can_read; |
467 |
d->chr_read[d->mux_cnt] = chr->chr_read; |
468 |
d->chr_event[d->mux_cnt] = chr->chr_event; |
469 |
/* Fix up the real driver with mux routines */
|
470 |
if (d->mux_cnt == 0) { |
471 |
qemu_chr_add_handlers(d->drv, mux_chr_can_read, mux_chr_read, |
472 |
mux_chr_event, chr); |
473 |
} |
474 |
if (d->focus != -1) { |
475 |
mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_OUT); |
476 |
} |
477 |
d->focus = d->mux_cnt; |
478 |
d->mux_cnt++; |
479 |
mux_chr_send_event(d, d->focus, CHR_EVENT_MUX_IN); |
480 |
} |
481 |
|
482 |
static bool muxes_realized; |
483 |
|
484 |
/**
|
485 |
* Called after processing of default and command-line-specified
|
486 |
* chardevs to deliver CHR_EVENT_OPENED events to any FEs attached
|
487 |
* to a mux chardev. This is done here to ensure that
|
488 |
* output/prompts/banners are only displayed for the FE that has
|
489 |
* focus when initial command-line processing/machine init is
|
490 |
* completed.
|
491 |
*
|
492 |
* After this point, any new FE attached to any new or existing
|
493 |
* mux will receive CHR_EVENT_OPENED notifications for the BE
|
494 |
* immediately.
|
495 |
*/
|
496 |
static void muxes_realize_done(Notifier *notifier, void *unused) |
497 |
{ |
498 |
CharDriverState *chr; |
499 |
|
500 |
QTAILQ_FOREACH(chr, &chardevs, next) { |
501 |
if (chr->is_mux) {
|
502 |
MuxDriver *d = chr->opaque; |
503 |
int i;
|
504 |
|
505 |
/* send OPENED to all already-attached FEs */
|
506 |
for (i = 0; i < d->mux_cnt; i++) { |
507 |
mux_chr_send_event(d, i, CHR_EVENT_OPENED); |
508 |
} |
509 |
/* mark mux as OPENED so any new FEs will immediately receive
|
510 |
* OPENED event
|
511 |
*/
|
512 |
qemu_chr_be_generic_open(chr); |
513 |
} |
514 |
} |
515 |
muxes_realized = true;
|
516 |
} |
517 |
|
518 |
static Notifier muxes_realize_notify = {
|
519 |
.notify = muxes_realize_done, |
520 |
}; |
521 |
|
522 |
static CharDriverState *qemu_chr_open_mux(CharDriverState *drv)
|
523 |
{ |
524 |
CharDriverState *chr; |
525 |
MuxDriver *d; |
526 |
|
527 |
chr = g_malloc0(sizeof(CharDriverState));
|
528 |
d = g_malloc0(sizeof(MuxDriver));
|
529 |
|
530 |
chr->opaque = d; |
531 |
d->drv = drv; |
532 |
d->focus = -1;
|
533 |
chr->chr_write = mux_chr_write; |
534 |
chr->chr_update_read_handler = mux_chr_update_read_handler; |
535 |
chr->chr_accept_input = mux_chr_accept_input; |
536 |
/* Frontend guest-open / -close notification is not support with muxes */
|
537 |
chr->chr_set_fe_open = NULL;
|
538 |
/* only default to opened state if we've realized the initial
|
539 |
* set of muxes
|
540 |
*/
|
541 |
chr->explicit_be_open = muxes_realized ? 0 : 1; |
542 |
chr->is_mux = 1;
|
543 |
|
544 |
return chr;
|
545 |
} |
546 |
|
547 |
|
548 |
#ifdef _WIN32
|
549 |
int send_all(int fd, const void *buf, int len1) |
550 |
{ |
551 |
int ret, len;
|
552 |
|
553 |
len = len1; |
554 |
while (len > 0) { |
555 |
ret = send(fd, buf, len, 0);
|
556 |
if (ret < 0) { |
557 |
errno = WSAGetLastError(); |
558 |
if (errno != WSAEWOULDBLOCK) {
|
559 |
return -1; |
560 |
} |
561 |
} else if (ret == 0) { |
562 |
break;
|
563 |
} else {
|
564 |
buf += ret; |
565 |
len -= ret; |
566 |
} |
567 |
} |
568 |
return len1 - len;
|
569 |
} |
570 |
|
571 |
#else
|
572 |
|
573 |
int send_all(int fd, const void *_buf, int len1) |
574 |
{ |
575 |
int ret, len;
|
576 |
const uint8_t *buf = _buf;
|
577 |
|
578 |
len = len1; |
579 |
while (len > 0) { |
580 |
ret = write(fd, buf, len); |
581 |
if (ret < 0) { |
582 |
if (errno != EINTR && errno != EAGAIN)
|
583 |
return -1; |
584 |
} else if (ret == 0) { |
585 |
break;
|
586 |
} else {
|
587 |
buf += ret; |
588 |
len -= ret; |
589 |
} |
590 |
} |
591 |
return len1 - len;
|
592 |
} |
593 |
|
594 |
int recv_all(int fd, void *_buf, int len1, bool single_read) |
595 |
{ |
596 |
int ret, len;
|
597 |
uint8_t *buf = _buf; |
598 |
|
599 |
len = len1; |
600 |
while ((len > 0) && (ret = read(fd, buf, len)) != 0) { |
601 |
if (ret < 0) { |
602 |
if (errno != EINTR && errno != EAGAIN) {
|
603 |
return -1; |
604 |
} |
605 |
continue;
|
606 |
} else {
|
607 |
if (single_read) {
|
608 |
return ret;
|
609 |
} |
610 |
buf += ret; |
611 |
len -= ret; |
612 |
} |
613 |
} |
614 |
return len1 - len;
|
615 |
} |
616 |
|
617 |
#endif /* !_WIN32 */ |
618 |
|
619 |
typedef struct IOWatchPoll |
620 |
{ |
621 |
GSource parent; |
622 |
|
623 |
GIOChannel *channel; |
624 |
GSource *src; |
625 |
|
626 |
IOCanReadHandler *fd_can_read; |
627 |
GSourceFunc fd_read; |
628 |
void *opaque;
|
629 |
} IOWatchPoll; |
630 |
|
631 |
static IOWatchPoll *io_watch_poll_from_source(GSource *source)
|
632 |
{ |
633 |
return container_of(source, IOWatchPoll, parent);
|
634 |
} |
635 |
|
636 |
static gboolean io_watch_poll_prepare(GSource *source, gint *timeout_)
|
637 |
{ |
638 |
IOWatchPoll *iwp = io_watch_poll_from_source(source); |
639 |
bool now_active = iwp->fd_can_read(iwp->opaque) > 0; |
640 |
bool was_active = iwp->src != NULL; |
641 |
if (was_active == now_active) {
|
642 |
return FALSE;
|
643 |
} |
644 |
|
645 |
if (now_active) {
|
646 |
iwp->src = g_io_create_watch(iwp->channel, G_IO_IN | G_IO_ERR | G_IO_HUP); |
647 |
g_source_set_callback(iwp->src, iwp->fd_read, iwp->opaque, NULL);
|
648 |
g_source_attach(iwp->src, NULL);
|
649 |
} else {
|
650 |
g_source_destroy(iwp->src); |
651 |
g_source_unref(iwp->src); |
652 |
iwp->src = NULL;
|
653 |
} |
654 |
return FALSE;
|
655 |
} |
656 |
|
657 |
static gboolean io_watch_poll_check(GSource *source)
|
658 |
{ |
659 |
return FALSE;
|
660 |
} |
661 |
|
662 |
static gboolean io_watch_poll_dispatch(GSource *source, GSourceFunc callback,
|
663 |
gpointer user_data) |
664 |
{ |
665 |
abort(); |
666 |
} |
667 |
|
668 |
static void io_watch_poll_finalize(GSource *source) |
669 |
{ |
670 |
/* Due to a glib bug, removing the last reference to a source
|
671 |
* inside a finalize callback causes recursive locking (and a
|
672 |
* deadlock). This is not a problem inside other callbacks,
|
673 |
* including dispatch callbacks, so we call io_remove_watch_poll
|
674 |
* to remove this source. At this point, iwp->src must
|
675 |
* be NULL, or we would leak it.
|
676 |
*
|
677 |
* This would be solved much more elegantly by child sources,
|
678 |
* but we support older glib versions that do not have them.
|
679 |
*/
|
680 |
IOWatchPoll *iwp = io_watch_poll_from_source(source); |
681 |
assert(iwp->src == NULL);
|
682 |
} |
683 |
|
684 |
static GSourceFuncs io_watch_poll_funcs = {
|
685 |
.prepare = io_watch_poll_prepare, |
686 |
.check = io_watch_poll_check, |
687 |
.dispatch = io_watch_poll_dispatch, |
688 |
.finalize = io_watch_poll_finalize, |
689 |
}; |
690 |
|
691 |
/* Can only be used for read */
|
692 |
static guint io_add_watch_poll(GIOChannel *channel,
|
693 |
IOCanReadHandler *fd_can_read, |
694 |
GIOFunc fd_read, |
695 |
gpointer user_data) |
696 |
{ |
697 |
IOWatchPoll *iwp; |
698 |
int tag;
|
699 |
|
700 |
iwp = (IOWatchPoll *) g_source_new(&io_watch_poll_funcs, sizeof(IOWatchPoll));
|
701 |
iwp->fd_can_read = fd_can_read; |
702 |
iwp->opaque = user_data; |
703 |
iwp->channel = channel; |
704 |
iwp->fd_read = (GSourceFunc) fd_read; |
705 |
iwp->src = NULL;
|
706 |
|
707 |
tag = g_source_attach(&iwp->parent, NULL);
|
708 |
g_source_unref(&iwp->parent); |
709 |
return tag;
|
710 |
} |
711 |
|
712 |
static void io_remove_watch_poll(guint tag) |
713 |
{ |
714 |
GSource *source; |
715 |
IOWatchPoll *iwp; |
716 |
|
717 |
g_return_if_fail (tag > 0);
|
718 |
|
719 |
source = g_main_context_find_source_by_id(NULL, tag);
|
720 |
g_return_if_fail (source != NULL);
|
721 |
|
722 |
iwp = io_watch_poll_from_source(source); |
723 |
if (iwp->src) {
|
724 |
g_source_destroy(iwp->src); |
725 |
g_source_unref(iwp->src); |
726 |
iwp->src = NULL;
|
727 |
} |
728 |
g_source_destroy(&iwp->parent); |
729 |
} |
730 |
|
731 |
static void remove_fd_in_watch(CharDriverState *chr) |
732 |
{ |
733 |
if (chr->fd_in_tag) {
|
734 |
io_remove_watch_poll(chr->fd_in_tag); |
735 |
chr->fd_in_tag = 0;
|
736 |
} |
737 |
} |
738 |
|
739 |
#ifndef _WIN32
|
740 |
static GIOChannel *io_channel_from_fd(int fd) |
741 |
{ |
742 |
GIOChannel *chan; |
743 |
|
744 |
if (fd == -1) { |
745 |
return NULL; |
746 |
} |
747 |
|
748 |
chan = g_io_channel_unix_new(fd); |
749 |
|
750 |
g_io_channel_set_encoding(chan, NULL, NULL); |
751 |
g_io_channel_set_buffered(chan, FALSE); |
752 |
|
753 |
return chan;
|
754 |
} |
755 |
#endif
|
756 |
|
757 |
static GIOChannel *io_channel_from_socket(int fd) |
758 |
{ |
759 |
GIOChannel *chan; |
760 |
|
761 |
if (fd == -1) { |
762 |
return NULL; |
763 |
} |
764 |
|
765 |
#ifdef _WIN32
|
766 |
chan = g_io_channel_win32_new_socket(fd); |
767 |
#else
|
768 |
chan = g_io_channel_unix_new(fd); |
769 |
#endif
|
770 |
|
771 |
g_io_channel_set_encoding(chan, NULL, NULL); |
772 |
g_io_channel_set_buffered(chan, FALSE); |
773 |
|
774 |
return chan;
|
775 |
} |
776 |
|
777 |
static int io_channel_send(GIOChannel *fd, const void *buf, size_t len) |
778 |
{ |
779 |
size_t offset = 0;
|
780 |
GIOStatus status = G_IO_STATUS_NORMAL; |
781 |
|
782 |
while (offset < len && status == G_IO_STATUS_NORMAL) {
|
783 |
gsize bytes_written = 0;
|
784 |
|
785 |
status = g_io_channel_write_chars(fd, buf + offset, len - offset, |
786 |
&bytes_written, NULL);
|
787 |
offset += bytes_written; |
788 |
} |
789 |
|
790 |
if (offset > 0) { |
791 |
return offset;
|
792 |
} |
793 |
switch (status) {
|
794 |
case G_IO_STATUS_NORMAL:
|
795 |
g_assert(len == 0);
|
796 |
return 0; |
797 |
case G_IO_STATUS_AGAIN:
|
798 |
errno = EAGAIN; |
799 |
return -1; |
800 |
default:
|
801 |
break;
|
802 |
} |
803 |
errno = EINVAL; |
804 |
return -1; |
805 |
} |
806 |
|
807 |
#ifndef _WIN32
|
808 |
|
809 |
typedef struct FDCharDriver { |
810 |
CharDriverState *chr; |
811 |
GIOChannel *fd_in, *fd_out; |
812 |
int max_size;
|
813 |
QTAILQ_ENTRY(FDCharDriver) node; |
814 |
} FDCharDriver; |
815 |
|
816 |
static int fd_chr_write(CharDriverState *chr, const uint8_t *buf, int len) |
817 |
{ |
818 |
FDCharDriver *s = chr->opaque; |
819 |
|
820 |
return io_channel_send(s->fd_out, buf, len);
|
821 |
} |
822 |
|
823 |
static gboolean fd_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque) |
824 |
{ |
825 |
CharDriverState *chr = opaque; |
826 |
FDCharDriver *s = chr->opaque; |
827 |
int len;
|
828 |
uint8_t buf[READ_BUF_LEN]; |
829 |
GIOStatus status; |
830 |
gsize bytes_read; |
831 |
|
832 |
len = sizeof(buf);
|
833 |
if (len > s->max_size) {
|
834 |
len = s->max_size; |
835 |
} |
836 |
if (len == 0) { |
837 |
return TRUE;
|
838 |
} |
839 |
|
840 |
status = g_io_channel_read_chars(chan, (gchar *)buf, |
841 |
len, &bytes_read, NULL);
|
842 |
if (status == G_IO_STATUS_EOF) {
|
843 |
remove_fd_in_watch(chr); |
844 |
qemu_chr_be_event(chr, CHR_EVENT_CLOSED); |
845 |
return FALSE;
|
846 |
} |
847 |
if (status == G_IO_STATUS_NORMAL) {
|
848 |
qemu_chr_be_write(chr, buf, bytes_read); |
849 |
} |
850 |
|
851 |
return TRUE;
|
852 |
} |
853 |
|
854 |
static int fd_chr_read_poll(void *opaque) |
855 |
{ |
856 |
CharDriverState *chr = opaque; |
857 |
FDCharDriver *s = chr->opaque; |
858 |
|
859 |
s->max_size = qemu_chr_be_can_write(chr); |
860 |
return s->max_size;
|
861 |
} |
862 |
|
863 |
static GSource *fd_chr_add_watch(CharDriverState *chr, GIOCondition cond)
|
864 |
{ |
865 |
FDCharDriver *s = chr->opaque; |
866 |
return g_io_create_watch(s->fd_out, cond);
|
867 |
} |
868 |
|
869 |
static void fd_chr_update_read_handler(CharDriverState *chr) |
870 |
{ |
871 |
FDCharDriver *s = chr->opaque; |
872 |
|
873 |
remove_fd_in_watch(chr); |
874 |
if (s->fd_in) {
|
875 |
chr->fd_in_tag = io_add_watch_poll(s->fd_in, fd_chr_read_poll, |
876 |
fd_chr_read, chr); |
877 |
} |
878 |
} |
879 |
|
880 |
static void fd_chr_close(struct CharDriverState *chr) |
881 |
{ |
882 |
FDCharDriver *s = chr->opaque; |
883 |
|
884 |
remove_fd_in_watch(chr); |
885 |
if (s->fd_in) {
|
886 |
g_io_channel_unref(s->fd_in); |
887 |
} |
888 |
if (s->fd_out) {
|
889 |
g_io_channel_unref(s->fd_out); |
890 |
} |
891 |
|
892 |
g_free(s); |
893 |
qemu_chr_be_event(chr, CHR_EVENT_CLOSED); |
894 |
} |
895 |
|
896 |
/* open a character device to a unix fd */
|
897 |
static CharDriverState *qemu_chr_open_fd(int fd_in, int fd_out) |
898 |
{ |
899 |
CharDriverState *chr; |
900 |
FDCharDriver *s; |
901 |
|
902 |
chr = g_malloc0(sizeof(CharDriverState));
|
903 |
s = g_malloc0(sizeof(FDCharDriver));
|
904 |
s->fd_in = io_channel_from_fd(fd_in); |
905 |
s->fd_out = io_channel_from_fd(fd_out); |
906 |
fcntl(fd_out, F_SETFL, O_NONBLOCK); |
907 |
s->chr = chr; |
908 |
chr->opaque = s; |
909 |
chr->chr_add_watch = fd_chr_add_watch; |
910 |
chr->chr_write = fd_chr_write; |
911 |
chr->chr_update_read_handler = fd_chr_update_read_handler; |
912 |
chr->chr_close = fd_chr_close; |
913 |
|
914 |
return chr;
|
915 |
} |
916 |
|
917 |
static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
|
918 |
{ |
919 |
int fd_in, fd_out;
|
920 |
char filename_in[256], filename_out[256]; |
921 |
const char *filename = opts->device; |
922 |
|
923 |
if (filename == NULL) { |
924 |
fprintf(stderr, "chardev: pipe: no filename given\n");
|
925 |
return NULL; |
926 |
} |
927 |
|
928 |
snprintf(filename_in, 256, "%s.in", filename); |
929 |
snprintf(filename_out, 256, "%s.out", filename); |
930 |
TFR(fd_in = qemu_open(filename_in, O_RDWR | O_BINARY)); |
931 |
TFR(fd_out = qemu_open(filename_out, O_RDWR | O_BINARY)); |
932 |
if (fd_in < 0 || fd_out < 0) { |
933 |
if (fd_in >= 0) |
934 |
close(fd_in); |
935 |
if (fd_out >= 0) |
936 |
close(fd_out); |
937 |
TFR(fd_in = fd_out = qemu_open(filename, O_RDWR | O_BINARY)); |
938 |
if (fd_in < 0) { |
939 |
return NULL; |
940 |
} |
941 |
} |
942 |
return qemu_chr_open_fd(fd_in, fd_out);
|
943 |
} |
944 |
|
945 |
/* init terminal so that we can grab keys */
|
946 |
static struct termios oldtty; |
947 |
static int old_fd0_flags; |
948 |
static bool stdio_allow_signal; |
949 |
|
950 |
static void term_exit(void) |
951 |
{ |
952 |
tcsetattr (0, TCSANOW, &oldtty);
|
953 |
fcntl(0, F_SETFL, old_fd0_flags);
|
954 |
} |
955 |
|
956 |
static void qemu_chr_set_echo_stdio(CharDriverState *chr, bool echo) |
957 |
{ |
958 |
struct termios tty;
|
959 |
|
960 |
tty = oldtty; |
961 |
if (!echo) {
|
962 |
tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP |
963 |
|INLCR|IGNCR|ICRNL|IXON); |
964 |
tty.c_oflag |= OPOST; |
965 |
tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN); |
966 |
tty.c_cflag &= ~(CSIZE|PARENB); |
967 |
tty.c_cflag |= CS8; |
968 |
tty.c_cc[VMIN] = 1;
|
969 |
tty.c_cc[VTIME] = 0;
|
970 |
} |
971 |
if (!stdio_allow_signal)
|
972 |
tty.c_lflag &= ~ISIG; |
973 |
|
974 |
tcsetattr (0, TCSANOW, &tty);
|
975 |
} |
976 |
|
977 |
static void qemu_chr_close_stdio(struct CharDriverState *chr) |
978 |
{ |
979 |
term_exit(); |
980 |
fd_chr_close(chr); |
981 |
} |
982 |
|
983 |
static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
|
984 |
{ |
985 |
CharDriverState *chr; |
986 |
|
987 |
if (is_daemonized()) {
|
988 |
error_report("cannot use stdio with -daemonize");
|
989 |
return NULL; |
990 |
} |
991 |
old_fd0_flags = fcntl(0, F_GETFL);
|
992 |
tcgetattr (0, &oldtty);
|
993 |
fcntl(0, F_SETFL, O_NONBLOCK);
|
994 |
atexit(term_exit); |
995 |
|
996 |
chr = qemu_chr_open_fd(0, 1); |
997 |
chr->chr_close = qemu_chr_close_stdio; |
998 |
chr->chr_set_echo = qemu_chr_set_echo_stdio; |
999 |
if (opts->has_signal) {
|
1000 |
stdio_allow_signal = opts->signal; |
1001 |
} |
1002 |
qemu_chr_fe_set_echo(chr, false);
|
1003 |
|
1004 |
return chr;
|
1005 |
} |
1006 |
|
1007 |
#if defined(__linux__) || defined(__sun__) || defined(__FreeBSD__) \
|
1008 |
|| defined(__NetBSD__) || defined(__OpenBSD__) || defined(__DragonFly__) \ |
1009 |
|| defined(__GLIBC__) |
1010 |
|
1011 |
#define HAVE_CHARDEV_TTY 1 |
1012 |
|
1013 |
typedef struct { |
1014 |
GIOChannel *fd; |
1015 |
int connected;
|
1016 |
int read_bytes;
|
1017 |
guint timer_tag; |
1018 |
} PtyCharDriver; |
1019 |
|
1020 |
static void pty_chr_update_read_handler(CharDriverState *chr); |
1021 |
static void pty_chr_state(CharDriverState *chr, int connected); |
1022 |
|
1023 |
static gboolean pty_chr_timer(gpointer opaque)
|
1024 |
{ |
1025 |
struct CharDriverState *chr = opaque;
|
1026 |
PtyCharDriver *s = chr->opaque; |
1027 |
|
1028 |
s->timer_tag = 0;
|
1029 |
if (!s->connected) {
|
1030 |
/* Next poll ... */
|
1031 |
pty_chr_update_read_handler(chr); |
1032 |
} |
1033 |
return FALSE;
|
1034 |
} |
1035 |
|
1036 |
static void pty_chr_rearm_timer(CharDriverState *chr, int ms) |
1037 |
{ |
1038 |
PtyCharDriver *s = chr->opaque; |
1039 |
|
1040 |
if (s->timer_tag) {
|
1041 |
g_source_remove(s->timer_tag); |
1042 |
s->timer_tag = 0;
|
1043 |
} |
1044 |
|
1045 |
if (ms == 1000) { |
1046 |
s->timer_tag = g_timeout_add_seconds(1, pty_chr_timer, chr);
|
1047 |
} else {
|
1048 |
s->timer_tag = g_timeout_add(ms, pty_chr_timer, chr); |
1049 |
} |
1050 |
} |
1051 |
|
1052 |
static int pty_chr_write(CharDriverState *chr, const uint8_t *buf, int len) |
1053 |
{ |
1054 |
PtyCharDriver *s = chr->opaque; |
1055 |
|
1056 |
if (!s->connected) {
|
1057 |
/* guest sends data, check for (re-)connect */
|
1058 |
pty_chr_update_read_handler(chr); |
1059 |
return 0; |
1060 |
} |
1061 |
return io_channel_send(s->fd, buf, len);
|
1062 |
} |
1063 |
|
1064 |
static GSource *pty_chr_add_watch(CharDriverState *chr, GIOCondition cond)
|
1065 |
{ |
1066 |
PtyCharDriver *s = chr->opaque; |
1067 |
return g_io_create_watch(s->fd, cond);
|
1068 |
} |
1069 |
|
1070 |
static int pty_chr_read_poll(void *opaque) |
1071 |
{ |
1072 |
CharDriverState *chr = opaque; |
1073 |
PtyCharDriver *s = chr->opaque; |
1074 |
|
1075 |
s->read_bytes = qemu_chr_be_can_write(chr); |
1076 |
return s->read_bytes;
|
1077 |
} |
1078 |
|
1079 |
static gboolean pty_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque) |
1080 |
{ |
1081 |
CharDriverState *chr = opaque; |
1082 |
PtyCharDriver *s = chr->opaque; |
1083 |
gsize size, len; |
1084 |
uint8_t buf[READ_BUF_LEN]; |
1085 |
GIOStatus status; |
1086 |
|
1087 |
len = sizeof(buf);
|
1088 |
if (len > s->read_bytes)
|
1089 |
len = s->read_bytes; |
1090 |
if (len == 0) { |
1091 |
return TRUE;
|
1092 |
} |
1093 |
status = g_io_channel_read_chars(s->fd, (gchar *)buf, len, &size, NULL);
|
1094 |
if (status != G_IO_STATUS_NORMAL) {
|
1095 |
pty_chr_state(chr, 0);
|
1096 |
return FALSE;
|
1097 |
} else {
|
1098 |
pty_chr_state(chr, 1);
|
1099 |
qemu_chr_be_write(chr, buf, size); |
1100 |
} |
1101 |
return TRUE;
|
1102 |
} |
1103 |
|
1104 |
static void pty_chr_update_read_handler(CharDriverState *chr) |
1105 |
{ |
1106 |
PtyCharDriver *s = chr->opaque; |
1107 |
GPollFD pfd; |
1108 |
|
1109 |
pfd.fd = g_io_channel_unix_get_fd(s->fd); |
1110 |
pfd.events = G_IO_OUT; |
1111 |
pfd.revents = 0;
|
1112 |
g_poll(&pfd, 1, 0); |
1113 |
if (pfd.revents & G_IO_HUP) {
|
1114 |
pty_chr_state(chr, 0);
|
1115 |
} else {
|
1116 |
pty_chr_state(chr, 1);
|
1117 |
} |
1118 |
} |
1119 |
|
1120 |
static void pty_chr_state(CharDriverState *chr, int connected) |
1121 |
{ |
1122 |
PtyCharDriver *s = chr->opaque; |
1123 |
|
1124 |
if (!connected) {
|
1125 |
remove_fd_in_watch(chr); |
1126 |
s->connected = 0;
|
1127 |
/* (re-)connect poll interval for idle guests: once per second.
|
1128 |
* We check more frequently in case the guests sends data to
|
1129 |
* the virtual device linked to our pty. */
|
1130 |
pty_chr_rearm_timer(chr, 1000);
|
1131 |
} else {
|
1132 |
if (s->timer_tag) {
|
1133 |
g_source_remove(s->timer_tag); |
1134 |
s->timer_tag = 0;
|
1135 |
} |
1136 |
if (!s->connected) {
|
1137 |
s->connected = 1;
|
1138 |
qemu_chr_be_generic_open(chr); |
1139 |
chr->fd_in_tag = io_add_watch_poll(s->fd, pty_chr_read_poll, |
1140 |
pty_chr_read, chr); |
1141 |
} |
1142 |
} |
1143 |
} |
1144 |
|
1145 |
|
1146 |
static void pty_chr_close(struct CharDriverState *chr) |
1147 |
{ |
1148 |
PtyCharDriver *s = chr->opaque; |
1149 |
int fd;
|
1150 |
|
1151 |
remove_fd_in_watch(chr); |
1152 |
fd = g_io_channel_unix_get_fd(s->fd); |
1153 |
g_io_channel_unref(s->fd); |
1154 |
close(fd); |
1155 |
if (s->timer_tag) {
|
1156 |
g_source_remove(s->timer_tag); |
1157 |
s->timer_tag = 0;
|
1158 |
} |
1159 |
g_free(s); |
1160 |
qemu_chr_be_event(chr, CHR_EVENT_CLOSED); |
1161 |
} |
1162 |
|
1163 |
static CharDriverState *qemu_chr_open_pty(const char *id, |
1164 |
ChardevReturn *ret) |
1165 |
{ |
1166 |
CharDriverState *chr; |
1167 |
PtyCharDriver *s; |
1168 |
int master_fd, slave_fd;
|
1169 |
char pty_name[PATH_MAX];
|
1170 |
|
1171 |
master_fd = qemu_openpty_raw(&slave_fd, pty_name); |
1172 |
if (master_fd < 0) { |
1173 |
return NULL; |
1174 |
} |
1175 |
|
1176 |
close(slave_fd); |
1177 |
|
1178 |
chr = g_malloc0(sizeof(CharDriverState));
|
1179 |
|
1180 |
chr->filename = g_strdup_printf("pty:%s", pty_name);
|
1181 |
ret->pty = g_strdup(pty_name); |
1182 |
ret->has_pty = true;
|
1183 |
|
1184 |
fprintf(stderr, "char device redirected to %s (label %s)\n",
|
1185 |
pty_name, id); |
1186 |
|
1187 |
s = g_malloc0(sizeof(PtyCharDriver));
|
1188 |
chr->opaque = s; |
1189 |
chr->chr_write = pty_chr_write; |
1190 |
chr->chr_update_read_handler = pty_chr_update_read_handler; |
1191 |
chr->chr_close = pty_chr_close; |
1192 |
chr->chr_add_watch = pty_chr_add_watch; |
1193 |
chr->explicit_be_open = true;
|
1194 |
|
1195 |
s->fd = io_channel_from_fd(master_fd); |
1196 |
s->timer_tag = 0;
|
1197 |
|
1198 |
return chr;
|
1199 |
} |
1200 |
|
1201 |
static void tty_serial_init(int fd, int speed, |
1202 |
int parity, int data_bits, int stop_bits) |
1203 |
{ |
1204 |
struct termios tty;
|
1205 |
speed_t spd; |
1206 |
|
1207 |
#if 0
|
1208 |
printf("tty_serial_init: speed=%d parity=%c data=%d stop=%d\n",
|
1209 |
speed, parity, data_bits, stop_bits);
|
1210 |
#endif
|
1211 |
tcgetattr (fd, &tty); |
1212 |
|
1213 |
#define check_speed(val) if (speed <= val) { spd = B##val; break; } |
1214 |
speed = speed * 10 / 11; |
1215 |
do {
|
1216 |
check_speed(50);
|
1217 |
check_speed(75);
|
1218 |
check_speed(110);
|
1219 |
check_speed(134);
|
1220 |
check_speed(150);
|
1221 |
check_speed(200);
|
1222 |
check_speed(300);
|
1223 |
check_speed(600);
|
1224 |
check_speed(1200);
|
1225 |
check_speed(1800);
|
1226 |
check_speed(2400);
|
1227 |
check_speed(4800);
|
1228 |
check_speed(9600);
|
1229 |
check_speed(19200);
|
1230 |
check_speed(38400);
|
1231 |
/* Non-Posix values follow. They may be unsupported on some systems. */
|
1232 |
check_speed(57600);
|
1233 |
check_speed(115200);
|
1234 |
#ifdef B230400
|
1235 |
check_speed(230400);
|
1236 |
#endif
|
1237 |
#ifdef B460800
|
1238 |
check_speed(460800);
|
1239 |
#endif
|
1240 |
#ifdef B500000
|
1241 |
check_speed(500000);
|
1242 |
#endif
|
1243 |
#ifdef B576000
|
1244 |
check_speed(576000);
|
1245 |
#endif
|
1246 |
#ifdef B921600
|
1247 |
check_speed(921600);
|
1248 |
#endif
|
1249 |
#ifdef B1000000
|
1250 |
check_speed(1000000);
|
1251 |
#endif
|
1252 |
#ifdef B1152000
|
1253 |
check_speed(1152000);
|
1254 |
#endif
|
1255 |
#ifdef B1500000
|
1256 |
check_speed(1500000);
|
1257 |
#endif
|
1258 |
#ifdef B2000000
|
1259 |
check_speed(2000000);
|
1260 |
#endif
|
1261 |
#ifdef B2500000
|
1262 |
check_speed(2500000);
|
1263 |
#endif
|
1264 |
#ifdef B3000000
|
1265 |
check_speed(3000000);
|
1266 |
#endif
|
1267 |
#ifdef B3500000
|
1268 |
check_speed(3500000);
|
1269 |
#endif
|
1270 |
#ifdef B4000000
|
1271 |
check_speed(4000000);
|
1272 |
#endif
|
1273 |
spd = B115200; |
1274 |
} while (0); |
1275 |
|
1276 |
cfsetispeed(&tty, spd); |
1277 |
cfsetospeed(&tty, spd); |
1278 |
|
1279 |
tty.c_iflag &= ~(IGNBRK|BRKINT|PARMRK|ISTRIP |
1280 |
|INLCR|IGNCR|ICRNL|IXON); |
1281 |
tty.c_oflag |= OPOST; |
1282 |
tty.c_lflag &= ~(ECHO|ECHONL|ICANON|IEXTEN|ISIG); |
1283 |
tty.c_cflag &= ~(CSIZE|PARENB|PARODD|CRTSCTS|CSTOPB); |
1284 |
switch(data_bits) {
|
1285 |
default:
|
1286 |
case 8: |
1287 |
tty.c_cflag |= CS8; |
1288 |
break;
|
1289 |
case 7: |
1290 |
tty.c_cflag |= CS7; |
1291 |
break;
|
1292 |
case 6: |
1293 |
tty.c_cflag |= CS6; |
1294 |
break;
|
1295 |
case 5: |
1296 |
tty.c_cflag |= CS5; |
1297 |
break;
|
1298 |
} |
1299 |
switch(parity) {
|
1300 |
default:
|
1301 |
case 'N': |
1302 |
break;
|
1303 |
case 'E': |
1304 |
tty.c_cflag |= PARENB; |
1305 |
break;
|
1306 |
case 'O': |
1307 |
tty.c_cflag |= PARENB | PARODD; |
1308 |
break;
|
1309 |
} |
1310 |
if (stop_bits == 2) |
1311 |
tty.c_cflag |= CSTOPB; |
1312 |
|
1313 |
tcsetattr (fd, TCSANOW, &tty); |
1314 |
} |
1315 |
|
1316 |
static int tty_serial_ioctl(CharDriverState *chr, int cmd, void *arg) |
1317 |
{ |
1318 |
FDCharDriver *s = chr->opaque; |
1319 |
|
1320 |
switch(cmd) {
|
1321 |
case CHR_IOCTL_SERIAL_SET_PARAMS:
|
1322 |
{ |
1323 |
QEMUSerialSetParams *ssp = arg; |
1324 |
tty_serial_init(g_io_channel_unix_get_fd(s->fd_in), |
1325 |
ssp->speed, ssp->parity, |
1326 |
ssp->data_bits, ssp->stop_bits); |
1327 |
} |
1328 |
break;
|
1329 |
case CHR_IOCTL_SERIAL_SET_BREAK:
|
1330 |
{ |
1331 |
int enable = *(int *)arg; |
1332 |
if (enable) {
|
1333 |
tcsendbreak(g_io_channel_unix_get_fd(s->fd_in), 1);
|
1334 |
} |
1335 |
} |
1336 |
break;
|
1337 |
case CHR_IOCTL_SERIAL_GET_TIOCM:
|
1338 |
{ |
1339 |
int sarg = 0; |
1340 |
int *targ = (int *)arg; |
1341 |
ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &sarg); |
1342 |
*targ = 0;
|
1343 |
if (sarg & TIOCM_CTS)
|
1344 |
*targ |= CHR_TIOCM_CTS; |
1345 |
if (sarg & TIOCM_CAR)
|
1346 |
*targ |= CHR_TIOCM_CAR; |
1347 |
if (sarg & TIOCM_DSR)
|
1348 |
*targ |= CHR_TIOCM_DSR; |
1349 |
if (sarg & TIOCM_RI)
|
1350 |
*targ |= CHR_TIOCM_RI; |
1351 |
if (sarg & TIOCM_DTR)
|
1352 |
*targ |= CHR_TIOCM_DTR; |
1353 |
if (sarg & TIOCM_RTS)
|
1354 |
*targ |= CHR_TIOCM_RTS; |
1355 |
} |
1356 |
break;
|
1357 |
case CHR_IOCTL_SERIAL_SET_TIOCM:
|
1358 |
{ |
1359 |
int sarg = *(int *)arg; |
1360 |
int targ = 0; |
1361 |
ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMGET, &targ); |
1362 |
targ &= ~(CHR_TIOCM_CTS | CHR_TIOCM_CAR | CHR_TIOCM_DSR |
1363 |
| CHR_TIOCM_RI | CHR_TIOCM_DTR | CHR_TIOCM_RTS); |
1364 |
if (sarg & CHR_TIOCM_CTS)
|
1365 |
targ |= TIOCM_CTS; |
1366 |
if (sarg & CHR_TIOCM_CAR)
|
1367 |
targ |= TIOCM_CAR; |
1368 |
if (sarg & CHR_TIOCM_DSR)
|
1369 |
targ |= TIOCM_DSR; |
1370 |
if (sarg & CHR_TIOCM_RI)
|
1371 |
targ |= TIOCM_RI; |
1372 |
if (sarg & CHR_TIOCM_DTR)
|
1373 |
targ |= TIOCM_DTR; |
1374 |
if (sarg & CHR_TIOCM_RTS)
|
1375 |
targ |= TIOCM_RTS; |
1376 |
ioctl(g_io_channel_unix_get_fd(s->fd_in), TIOCMSET, &targ); |
1377 |
} |
1378 |
break;
|
1379 |
default:
|
1380 |
return -ENOTSUP;
|
1381 |
} |
1382 |
return 0; |
1383 |
} |
1384 |
|
1385 |
static void qemu_chr_close_tty(CharDriverState *chr) |
1386 |
{ |
1387 |
FDCharDriver *s = chr->opaque; |
1388 |
int fd = -1; |
1389 |
|
1390 |
if (s) {
|
1391 |
fd = g_io_channel_unix_get_fd(s->fd_in); |
1392 |
} |
1393 |
|
1394 |
fd_chr_close(chr); |
1395 |
|
1396 |
if (fd >= 0) { |
1397 |
close(fd); |
1398 |
} |
1399 |
} |
1400 |
|
1401 |
static CharDriverState *qemu_chr_open_tty_fd(int fd) |
1402 |
{ |
1403 |
CharDriverState *chr; |
1404 |
|
1405 |
tty_serial_init(fd, 115200, 'N', 8, 1); |
1406 |
chr = qemu_chr_open_fd(fd, fd); |
1407 |
chr->chr_ioctl = tty_serial_ioctl; |
1408 |
chr->chr_close = qemu_chr_close_tty; |
1409 |
return chr;
|
1410 |
} |
1411 |
#endif /* __linux__ || __sun__ */ |
1412 |
|
1413 |
#if defined(__linux__)
|
1414 |
|
1415 |
#define HAVE_CHARDEV_PARPORT 1 |
1416 |
|
1417 |
typedef struct { |
1418 |
int fd;
|
1419 |
int mode;
|
1420 |
} ParallelCharDriver; |
1421 |
|
1422 |
static int pp_hw_mode(ParallelCharDriver *s, uint16_t mode) |
1423 |
{ |
1424 |
if (s->mode != mode) {
|
1425 |
int m = mode;
|
1426 |
if (ioctl(s->fd, PPSETMODE, &m) < 0) |
1427 |
return 0; |
1428 |
s->mode = mode; |
1429 |
} |
1430 |
return 1; |
1431 |
} |
1432 |
|
1433 |
static int pp_ioctl(CharDriverState *chr, int cmd, void *arg) |
1434 |
{ |
1435 |
ParallelCharDriver *drv = chr->opaque; |
1436 |
int fd = drv->fd;
|
1437 |
uint8_t b; |
1438 |
|
1439 |
switch(cmd) {
|
1440 |
case CHR_IOCTL_PP_READ_DATA:
|
1441 |
if (ioctl(fd, PPRDATA, &b) < 0) |
1442 |
return -ENOTSUP;
|
1443 |
*(uint8_t *)arg = b; |
1444 |
break;
|
1445 |
case CHR_IOCTL_PP_WRITE_DATA:
|
1446 |
b = *(uint8_t *)arg; |
1447 |
if (ioctl(fd, PPWDATA, &b) < 0) |
1448 |
return -ENOTSUP;
|
1449 |
break;
|
1450 |
case CHR_IOCTL_PP_READ_CONTROL:
|
1451 |
if (ioctl(fd, PPRCONTROL, &b) < 0) |
1452 |
return -ENOTSUP;
|
1453 |
/* Linux gives only the lowest bits, and no way to know data
|
1454 |
direction! For better compatibility set the fixed upper
|
1455 |
bits. */
|
1456 |
*(uint8_t *)arg = b | 0xc0;
|
1457 |
break;
|
1458 |
case CHR_IOCTL_PP_WRITE_CONTROL:
|
1459 |
b = *(uint8_t *)arg; |
1460 |
if (ioctl(fd, PPWCONTROL, &b) < 0) |
1461 |
return -ENOTSUP;
|
1462 |
break;
|
1463 |
case CHR_IOCTL_PP_READ_STATUS:
|
1464 |
if (ioctl(fd, PPRSTATUS, &b) < 0) |
1465 |
return -ENOTSUP;
|
1466 |
*(uint8_t *)arg = b; |
1467 |
break;
|
1468 |
case CHR_IOCTL_PP_DATA_DIR:
|
1469 |
if (ioctl(fd, PPDATADIR, (int *)arg) < 0) |
1470 |
return -ENOTSUP;
|
1471 |
break;
|
1472 |
case CHR_IOCTL_PP_EPP_READ_ADDR:
|
1473 |
if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
|
1474 |
struct ParallelIOArg *parg = arg;
|
1475 |
int n = read(fd, parg->buffer, parg->count);
|
1476 |
if (n != parg->count) {
|
1477 |
return -EIO;
|
1478 |
} |
1479 |
} |
1480 |
break;
|
1481 |
case CHR_IOCTL_PP_EPP_READ:
|
1482 |
if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
|
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_WRITE_ADDR:
|
1491 |
if (pp_hw_mode(drv, IEEE1284_MODE_EPP|IEEE1284_ADDR)) {
|
1492 |
struct ParallelIOArg *parg = arg;
|
1493 |
int n = write(fd, parg->buffer, parg->count);
|
1494 |
if (n != parg->count) {
|
1495 |
return -EIO;
|
1496 |
} |
1497 |
} |
1498 |
break;
|
1499 |
case CHR_IOCTL_PP_EPP_WRITE:
|
1500 |
if (pp_hw_mode(drv, IEEE1284_MODE_EPP)) {
|
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 |
default:
|
1509 |
return -ENOTSUP;
|
1510 |
} |
1511 |
return 0; |
1512 |
} |
1513 |
|
1514 |
static void pp_close(CharDriverState *chr) |
1515 |
{ |
1516 |
ParallelCharDriver *drv = chr->opaque; |
1517 |
int fd = drv->fd;
|
1518 |
|
1519 |
pp_hw_mode(drv, IEEE1284_MODE_COMPAT); |
1520 |
ioctl(fd, PPRELEASE); |
1521 |
close(fd); |
1522 |
g_free(drv); |
1523 |
qemu_chr_be_event(chr, CHR_EVENT_CLOSED); |
1524 |
} |
1525 |
|
1526 |
static CharDriverState *qemu_chr_open_pp_fd(int fd) |
1527 |
{ |
1528 |
CharDriverState *chr; |
1529 |
ParallelCharDriver *drv; |
1530 |
|
1531 |
if (ioctl(fd, PPCLAIM) < 0) { |
1532 |
close(fd); |
1533 |
return NULL; |
1534 |
} |
1535 |
|
1536 |
drv = g_malloc0(sizeof(ParallelCharDriver));
|
1537 |
drv->fd = fd; |
1538 |
drv->mode = IEEE1284_MODE_COMPAT; |
1539 |
|
1540 |
chr = g_malloc0(sizeof(CharDriverState));
|
1541 |
chr->chr_write = null_chr_write; |
1542 |
chr->chr_ioctl = pp_ioctl; |
1543 |
chr->chr_close = pp_close; |
1544 |
chr->opaque = drv; |
1545 |
|
1546 |
return chr;
|
1547 |
} |
1548 |
#endif /* __linux__ */ |
1549 |
|
1550 |
#if defined(__FreeBSD__) || defined(__FreeBSD_kernel__) || defined(__DragonFly__)
|
1551 |
|
1552 |
#define HAVE_CHARDEV_PARPORT 1 |
1553 |
|
1554 |
static int pp_ioctl(CharDriverState *chr, int cmd, void *arg) |
1555 |
{ |
1556 |
int fd = (int)(intptr_t)chr->opaque; |
1557 |
uint8_t b; |
1558 |
|
1559 |
switch(cmd) {
|
1560 |
case CHR_IOCTL_PP_READ_DATA:
|
1561 |
if (ioctl(fd, PPIGDATA, &b) < 0) |
1562 |
return -ENOTSUP;
|
1563 |
*(uint8_t *)arg = b; |
1564 |
break;
|
1565 |
case CHR_IOCTL_PP_WRITE_DATA:
|
1566 |
b = *(uint8_t *)arg; |
1567 |
if (ioctl(fd, PPISDATA, &b) < 0) |
1568 |
return -ENOTSUP;
|
1569 |
break;
|
1570 |
case CHR_IOCTL_PP_READ_CONTROL:
|
1571 |
if (ioctl(fd, PPIGCTRL, &b) < 0) |
1572 |
return -ENOTSUP;
|
1573 |
*(uint8_t *)arg = b; |
1574 |
break;
|
1575 |
case CHR_IOCTL_PP_WRITE_CONTROL:
|
1576 |
b = *(uint8_t *)arg; |
1577 |
if (ioctl(fd, PPISCTRL, &b) < 0) |
1578 |
return -ENOTSUP;
|
1579 |
break;
|
1580 |
case CHR_IOCTL_PP_READ_STATUS:
|
1581 |
if (ioctl(fd, PPIGSTATUS, &b) < 0) |
1582 |
return -ENOTSUP;
|
1583 |
*(uint8_t *)arg = b; |
1584 |
break;
|
1585 |
default:
|
1586 |
return -ENOTSUP;
|
1587 |
} |
1588 |
return 0; |
1589 |
} |
1590 |
|
1591 |
static CharDriverState *qemu_chr_open_pp_fd(int fd) |
1592 |
{ |
1593 |
CharDriverState *chr; |
1594 |
|
1595 |
chr = g_malloc0(sizeof(CharDriverState));
|
1596 |
chr->opaque = (void *)(intptr_t)fd;
|
1597 |
chr->chr_write = null_chr_write; |
1598 |
chr->chr_ioctl = pp_ioctl; |
1599 |
chr->explicit_be_open = true;
|
1600 |
return chr;
|
1601 |
} |
1602 |
#endif
|
1603 |
|
1604 |
#else /* _WIN32 */ |
1605 |
|
1606 |
typedef struct { |
1607 |
int max_size;
|
1608 |
HANDLE hcom, hrecv, hsend; |
1609 |
OVERLAPPED orecv, osend; |
1610 |
BOOL fpipe; |
1611 |
DWORD len; |
1612 |
} WinCharState; |
1613 |
|
1614 |
typedef struct { |
1615 |
HANDLE hStdIn; |
1616 |
HANDLE hInputReadyEvent; |
1617 |
HANDLE hInputDoneEvent; |
1618 |
HANDLE hInputThread; |
1619 |
uint8_t win_stdio_buf; |
1620 |
} WinStdioCharState; |
1621 |
|
1622 |
#define NSENDBUF 2048 |
1623 |
#define NRECVBUF 2048 |
1624 |
#define MAXCONNECT 1 |
1625 |
#define NTIMEOUT 5000 |
1626 |
|
1627 |
static int win_chr_poll(void *opaque); |
1628 |
static int win_chr_pipe_poll(void *opaque); |
1629 |
|
1630 |
static void win_chr_close(CharDriverState *chr) |
1631 |
{ |
1632 |
WinCharState *s = chr->opaque; |
1633 |
|
1634 |
if (s->hsend) {
|
1635 |
CloseHandle(s->hsend); |
1636 |
s->hsend = NULL;
|
1637 |
} |
1638 |
if (s->hrecv) {
|
1639 |
CloseHandle(s->hrecv); |
1640 |
s->hrecv = NULL;
|
1641 |
} |
1642 |
if (s->hcom) {
|
1643 |
CloseHandle(s->hcom); |
1644 |
s->hcom = NULL;
|
1645 |
} |
1646 |
if (s->fpipe)
|
1647 |
qemu_del_polling_cb(win_chr_pipe_poll, chr); |
1648 |
else
|
1649 |
qemu_del_polling_cb(win_chr_poll, chr); |
1650 |
|
1651 |
qemu_chr_be_event(chr, CHR_EVENT_CLOSED); |
1652 |
} |
1653 |
|
1654 |
static int win_chr_init(CharDriverState *chr, const char *filename) |
1655 |
{ |
1656 |
WinCharState *s = chr->opaque; |
1657 |
COMMCONFIG comcfg; |
1658 |
COMMTIMEOUTS cto = { 0, 0, 0, 0, 0}; |
1659 |
COMSTAT comstat; |
1660 |
DWORD size; |
1661 |
DWORD err; |
1662 |
|
1663 |
s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL); |
1664 |
if (!s->hsend) {
|
1665 |
fprintf(stderr, "Failed CreateEvent\n");
|
1666 |
goto fail;
|
1667 |
} |
1668 |
s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL); |
1669 |
if (!s->hrecv) {
|
1670 |
fprintf(stderr, "Failed CreateEvent\n");
|
1671 |
goto fail;
|
1672 |
} |
1673 |
|
1674 |
s->hcom = CreateFile(filename, GENERIC_READ|GENERIC_WRITE, 0, NULL, |
1675 |
OPEN_EXISTING, FILE_FLAG_OVERLAPPED, 0);
|
1676 |
if (s->hcom == INVALID_HANDLE_VALUE) {
|
1677 |
fprintf(stderr, "Failed CreateFile (%lu)\n", GetLastError());
|
1678 |
s->hcom = NULL;
|
1679 |
goto fail;
|
1680 |
} |
1681 |
|
1682 |
if (!SetupComm(s->hcom, NRECVBUF, NSENDBUF)) {
|
1683 |
fprintf(stderr, "Failed SetupComm\n");
|
1684 |
goto fail;
|
1685 |
} |
1686 |
|
1687 |
ZeroMemory(&comcfg, sizeof(COMMCONFIG));
|
1688 |
size = sizeof(COMMCONFIG);
|
1689 |
GetDefaultCommConfig(filename, &comcfg, &size); |
1690 |
comcfg.dcb.DCBlength = sizeof(DCB);
|
1691 |
CommConfigDialog(filename, NULL, &comcfg);
|
1692 |
|
1693 |
if (!SetCommState(s->hcom, &comcfg.dcb)) {
|
1694 |
fprintf(stderr, "Failed SetCommState\n");
|
1695 |
goto fail;
|
1696 |
} |
1697 |
|
1698 |
if (!SetCommMask(s->hcom, EV_ERR)) {
|
1699 |
fprintf(stderr, "Failed SetCommMask\n");
|
1700 |
goto fail;
|
1701 |
} |
1702 |
|
1703 |
cto.ReadIntervalTimeout = MAXDWORD; |
1704 |
if (!SetCommTimeouts(s->hcom, &cto)) {
|
1705 |
fprintf(stderr, "Failed SetCommTimeouts\n");
|
1706 |
goto fail;
|
1707 |
} |
1708 |
|
1709 |
if (!ClearCommError(s->hcom, &err, &comstat)) {
|
1710 |
fprintf(stderr, "Failed ClearCommError\n");
|
1711 |
goto fail;
|
1712 |
} |
1713 |
qemu_add_polling_cb(win_chr_poll, chr); |
1714 |
return 0; |
1715 |
|
1716 |
fail:
|
1717 |
win_chr_close(chr); |
1718 |
return -1; |
1719 |
} |
1720 |
|
1721 |
static int win_chr_write(CharDriverState *chr, const uint8_t *buf, int len1) |
1722 |
{ |
1723 |
WinCharState *s = chr->opaque; |
1724 |
DWORD len, ret, size, err; |
1725 |
|
1726 |
len = len1; |
1727 |
ZeroMemory(&s->osend, sizeof(s->osend));
|
1728 |
s->osend.hEvent = s->hsend; |
1729 |
while (len > 0) { |
1730 |
if (s->hsend)
|
1731 |
ret = WriteFile(s->hcom, buf, len, &size, &s->osend); |
1732 |
else
|
1733 |
ret = WriteFile(s->hcom, buf, len, &size, NULL);
|
1734 |
if (!ret) {
|
1735 |
err = GetLastError(); |
1736 |
if (err == ERROR_IO_PENDING) {
|
1737 |
ret = GetOverlappedResult(s->hcom, &s->osend, &size, TRUE); |
1738 |
if (ret) {
|
1739 |
buf += size; |
1740 |
len -= size; |
1741 |
} else {
|
1742 |
break;
|
1743 |
} |
1744 |
} else {
|
1745 |
break;
|
1746 |
} |
1747 |
} else {
|
1748 |
buf += size; |
1749 |
len -= size; |
1750 |
} |
1751 |
} |
1752 |
return len1 - len;
|
1753 |
} |
1754 |
|
1755 |
static int win_chr_read_poll(CharDriverState *chr) |
1756 |
{ |
1757 |
WinCharState *s = chr->opaque; |
1758 |
|
1759 |
s->max_size = qemu_chr_be_can_write(chr); |
1760 |
return s->max_size;
|
1761 |
} |
1762 |
|
1763 |
static void win_chr_readfile(CharDriverState *chr) |
1764 |
{ |
1765 |
WinCharState *s = chr->opaque; |
1766 |
int ret, err;
|
1767 |
uint8_t buf[READ_BUF_LEN]; |
1768 |
DWORD size; |
1769 |
|
1770 |
ZeroMemory(&s->orecv, sizeof(s->orecv));
|
1771 |
s->orecv.hEvent = s->hrecv; |
1772 |
ret = ReadFile(s->hcom, buf, s->len, &size, &s->orecv); |
1773 |
if (!ret) {
|
1774 |
err = GetLastError(); |
1775 |
if (err == ERROR_IO_PENDING) {
|
1776 |
ret = GetOverlappedResult(s->hcom, &s->orecv, &size, TRUE); |
1777 |
} |
1778 |
} |
1779 |
|
1780 |
if (size > 0) { |
1781 |
qemu_chr_be_write(chr, buf, size); |
1782 |
} |
1783 |
} |
1784 |
|
1785 |
static void win_chr_read(CharDriverState *chr) |
1786 |
{ |
1787 |
WinCharState *s = chr->opaque; |
1788 |
|
1789 |
if (s->len > s->max_size)
|
1790 |
s->len = s->max_size; |
1791 |
if (s->len == 0) |
1792 |
return;
|
1793 |
|
1794 |
win_chr_readfile(chr); |
1795 |
} |
1796 |
|
1797 |
static int win_chr_poll(void *opaque) |
1798 |
{ |
1799 |
CharDriverState *chr = opaque; |
1800 |
WinCharState *s = chr->opaque; |
1801 |
COMSTAT status; |
1802 |
DWORD comerr; |
1803 |
|
1804 |
ClearCommError(s->hcom, &comerr, &status); |
1805 |
if (status.cbInQue > 0) { |
1806 |
s->len = status.cbInQue; |
1807 |
win_chr_read_poll(chr); |
1808 |
win_chr_read(chr); |
1809 |
return 1; |
1810 |
} |
1811 |
return 0; |
1812 |
} |
1813 |
|
1814 |
static CharDriverState *qemu_chr_open_win_path(const char *filename) |
1815 |
{ |
1816 |
CharDriverState *chr; |
1817 |
WinCharState *s; |
1818 |
|
1819 |
chr = g_malloc0(sizeof(CharDriverState));
|
1820 |
s = g_malloc0(sizeof(WinCharState));
|
1821 |
chr->opaque = s; |
1822 |
chr->chr_write = win_chr_write; |
1823 |
chr->chr_close = win_chr_close; |
1824 |
|
1825 |
if (win_chr_init(chr, filename) < 0) { |
1826 |
g_free(s); |
1827 |
g_free(chr); |
1828 |
return NULL; |
1829 |
} |
1830 |
return chr;
|
1831 |
} |
1832 |
|
1833 |
static int win_chr_pipe_poll(void *opaque) |
1834 |
{ |
1835 |
CharDriverState *chr = opaque; |
1836 |
WinCharState *s = chr->opaque; |
1837 |
DWORD size; |
1838 |
|
1839 |
PeekNamedPipe(s->hcom, NULL, 0, NULL, &size, NULL); |
1840 |
if (size > 0) { |
1841 |
s->len = size; |
1842 |
win_chr_read_poll(chr); |
1843 |
win_chr_read(chr); |
1844 |
return 1; |
1845 |
} |
1846 |
return 0; |
1847 |
} |
1848 |
|
1849 |
static int win_chr_pipe_init(CharDriverState *chr, const char *filename) |
1850 |
{ |
1851 |
WinCharState *s = chr->opaque; |
1852 |
OVERLAPPED ov; |
1853 |
int ret;
|
1854 |
DWORD size; |
1855 |
char openname[256]; |
1856 |
|
1857 |
s->fpipe = TRUE; |
1858 |
|
1859 |
s->hsend = CreateEvent(NULL, TRUE, FALSE, NULL); |
1860 |
if (!s->hsend) {
|
1861 |
fprintf(stderr, "Failed CreateEvent\n");
|
1862 |
goto fail;
|
1863 |
} |
1864 |
s->hrecv = CreateEvent(NULL, TRUE, FALSE, NULL); |
1865 |
if (!s->hrecv) {
|
1866 |
fprintf(stderr, "Failed CreateEvent\n");
|
1867 |
goto fail;
|
1868 |
} |
1869 |
|
1870 |
snprintf(openname, sizeof(openname), "\\\\.\\pipe\\%s", filename); |
1871 |
s->hcom = CreateNamedPipe(openname, PIPE_ACCESS_DUPLEX | FILE_FLAG_OVERLAPPED, |
1872 |
PIPE_TYPE_BYTE | PIPE_READMODE_BYTE | |
1873 |
PIPE_WAIT, |
1874 |
MAXCONNECT, NSENDBUF, NRECVBUF, NTIMEOUT, NULL);
|
1875 |
if (s->hcom == INVALID_HANDLE_VALUE) {
|
1876 |
fprintf(stderr, "Failed CreateNamedPipe (%lu)\n", GetLastError());
|
1877 |
s->hcom = NULL;
|
1878 |
goto fail;
|
1879 |
} |
1880 |
|
1881 |
ZeroMemory(&ov, sizeof(ov));
|
1882 |
ov.hEvent = CreateEvent(NULL, TRUE, FALSE, NULL); |
1883 |
ret = ConnectNamedPipe(s->hcom, &ov); |
1884 |
if (ret) {
|
1885 |
fprintf(stderr, "Failed ConnectNamedPipe\n");
|
1886 |
goto fail;
|
1887 |
} |
1888 |
|
1889 |
ret = GetOverlappedResult(s->hcom, &ov, &size, TRUE); |
1890 |
if (!ret) {
|
1891 |
fprintf(stderr, "Failed GetOverlappedResult\n");
|
1892 |
if (ov.hEvent) {
|
1893 |
CloseHandle(ov.hEvent); |
1894 |
ov.hEvent = NULL;
|
1895 |
} |
1896 |
goto fail;
|
1897 |
} |
1898 |
|
1899 |
if (ov.hEvent) {
|
1900 |
CloseHandle(ov.hEvent); |
1901 |
ov.hEvent = NULL;
|
1902 |
} |
1903 |
qemu_add_polling_cb(win_chr_pipe_poll, chr); |
1904 |
return 0; |
1905 |
|
1906 |
fail:
|
1907 |
win_chr_close(chr); |
1908 |
return -1; |
1909 |
} |
1910 |
|
1911 |
|
1912 |
static CharDriverState *qemu_chr_open_pipe(ChardevHostdev *opts)
|
1913 |
{ |
1914 |
const char *filename = opts->device; |
1915 |
CharDriverState *chr; |
1916 |
WinCharState *s; |
1917 |
|
1918 |
chr = g_malloc0(sizeof(CharDriverState));
|
1919 |
s = g_malloc0(sizeof(WinCharState));
|
1920 |
chr->opaque = s; |
1921 |
chr->chr_write = win_chr_write; |
1922 |
chr->chr_close = win_chr_close; |
1923 |
|
1924 |
if (win_chr_pipe_init(chr, filename) < 0) { |
1925 |
g_free(s); |
1926 |
g_free(chr); |
1927 |
return NULL; |
1928 |
} |
1929 |
return chr;
|
1930 |
} |
1931 |
|
1932 |
static CharDriverState *qemu_chr_open_win_file(HANDLE fd_out)
|
1933 |
{ |
1934 |
CharDriverState *chr; |
1935 |
WinCharState *s; |
1936 |
|
1937 |
chr = g_malloc0(sizeof(CharDriverState));
|
1938 |
s = g_malloc0(sizeof(WinCharState));
|
1939 |
s->hcom = fd_out; |
1940 |
chr->opaque = s; |
1941 |
chr->chr_write = win_chr_write; |
1942 |
return chr;
|
1943 |
} |
1944 |
|
1945 |
static CharDriverState *qemu_chr_open_win_con(void) |
1946 |
{ |
1947 |
return qemu_chr_open_win_file(GetStdHandle(STD_OUTPUT_HANDLE));
|
1948 |
} |
1949 |
|
1950 |
static int win_stdio_write(CharDriverState *chr, const uint8_t *buf, int len) |
1951 |
{ |
1952 |
HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE); |
1953 |
DWORD dwSize; |
1954 |
int len1;
|
1955 |
|
1956 |
len1 = len; |
1957 |
|
1958 |
while (len1 > 0) { |
1959 |
if (!WriteFile(hStdOut, buf, len1, &dwSize, NULL)) { |
1960 |
break;
|
1961 |
} |
1962 |
buf += dwSize; |
1963 |
len1 -= dwSize; |
1964 |
} |
1965 |
|
1966 |
return len - len1;
|
1967 |
} |
1968 |
|
1969 |
static void win_stdio_wait_func(void *opaque) |
1970 |
{ |
1971 |
CharDriverState *chr = opaque; |
1972 |
WinStdioCharState *stdio = chr->opaque; |
1973 |
INPUT_RECORD buf[4];
|
1974 |
int ret;
|
1975 |
DWORD dwSize; |
1976 |
int i;
|
1977 |
|
1978 |
ret = ReadConsoleInput(stdio->hStdIn, buf, ARRAY_SIZE(buf), &dwSize); |
1979 |
|
1980 |
if (!ret) {
|
1981 |
/* Avoid error storm */
|
1982 |
qemu_del_wait_object(stdio->hStdIn, NULL, NULL); |
1983 |
return;
|
1984 |
} |
1985 |
|
1986 |
for (i = 0; i < dwSize; i++) { |
1987 |
KEY_EVENT_RECORD *kev = &buf[i].Event.KeyEvent; |
1988 |
|
1989 |
if (buf[i].EventType == KEY_EVENT && kev->bKeyDown) {
|
1990 |
int j;
|
1991 |
if (kev->uChar.AsciiChar != 0) { |
1992 |
for (j = 0; j < kev->wRepeatCount; j++) { |
1993 |
if (qemu_chr_be_can_write(chr)) {
|
1994 |
uint8_t c = kev->uChar.AsciiChar; |
1995 |
qemu_chr_be_write(chr, &c, 1);
|
1996 |
} |
1997 |
} |
1998 |
} |
1999 |
} |
2000 |
} |
2001 |
} |
2002 |
|
2003 |
static DWORD WINAPI win_stdio_thread(LPVOID param)
|
2004 |
{ |
2005 |
CharDriverState *chr = param; |
2006 |
WinStdioCharState *stdio = chr->opaque; |
2007 |
int ret;
|
2008 |
DWORD dwSize; |
2009 |
|
2010 |
while (1) { |
2011 |
|
2012 |
/* Wait for one byte */
|
2013 |
ret = ReadFile(stdio->hStdIn, &stdio->win_stdio_buf, 1, &dwSize, NULL); |
2014 |
|
2015 |
/* Exit in case of error, continue if nothing read */
|
2016 |
if (!ret) {
|
2017 |
break;
|
2018 |
} |
2019 |
if (!dwSize) {
|
2020 |
continue;
|
2021 |
} |
2022 |
|
2023 |
/* Some terminal emulator returns \r\n for Enter, just pass \n */
|
2024 |
if (stdio->win_stdio_buf == '\r') { |
2025 |
continue;
|
2026 |
} |
2027 |
|
2028 |
/* Signal the main thread and wait until the byte was eaten */
|
2029 |
if (!SetEvent(stdio->hInputReadyEvent)) {
|
2030 |
break;
|
2031 |
} |
2032 |
if (WaitForSingleObject(stdio->hInputDoneEvent, INFINITE)
|
2033 |
!= WAIT_OBJECT_0) { |
2034 |
break;
|
2035 |
} |
2036 |
} |
2037 |
|
2038 |
qemu_del_wait_object(stdio->hInputReadyEvent, NULL, NULL); |
2039 |
return 0; |
2040 |
} |
2041 |
|
2042 |
static void win_stdio_thread_wait_func(void *opaque) |
2043 |
{ |
2044 |
CharDriverState *chr = opaque; |
2045 |
WinStdioCharState *stdio = chr->opaque; |
2046 |
|
2047 |
if (qemu_chr_be_can_write(chr)) {
|
2048 |
qemu_chr_be_write(chr, &stdio->win_stdio_buf, 1);
|
2049 |
} |
2050 |
|
2051 |
SetEvent(stdio->hInputDoneEvent); |
2052 |
} |
2053 |
|
2054 |
static void qemu_chr_set_echo_win_stdio(CharDriverState *chr, bool echo) |
2055 |
{ |
2056 |
WinStdioCharState *stdio = chr->opaque; |
2057 |
DWORD dwMode = 0;
|
2058 |
|
2059 |
GetConsoleMode(stdio->hStdIn, &dwMode); |
2060 |
|
2061 |
if (echo) {
|
2062 |
SetConsoleMode(stdio->hStdIn, dwMode | ENABLE_ECHO_INPUT); |
2063 |
} else {
|
2064 |
SetConsoleMode(stdio->hStdIn, dwMode & ~ENABLE_ECHO_INPUT); |
2065 |
} |
2066 |
} |
2067 |
|
2068 |
static void win_stdio_close(CharDriverState *chr) |
2069 |
{ |
2070 |
WinStdioCharState *stdio = chr->opaque; |
2071 |
|
2072 |
if (stdio->hInputReadyEvent != INVALID_HANDLE_VALUE) {
|
2073 |
CloseHandle(stdio->hInputReadyEvent); |
2074 |
} |
2075 |
if (stdio->hInputDoneEvent != INVALID_HANDLE_VALUE) {
|
2076 |
CloseHandle(stdio->hInputDoneEvent); |
2077 |
} |
2078 |
if (stdio->hInputThread != INVALID_HANDLE_VALUE) {
|
2079 |
TerminateThread(stdio->hInputThread, 0);
|
2080 |
} |
2081 |
|
2082 |
g_free(chr->opaque); |
2083 |
g_free(chr); |
2084 |
} |
2085 |
|
2086 |
static CharDriverState *qemu_chr_open_stdio(ChardevStdio *opts)
|
2087 |
{ |
2088 |
CharDriverState *chr; |
2089 |
WinStdioCharState *stdio; |
2090 |
DWORD dwMode; |
2091 |
int is_console = 0; |
2092 |
|
2093 |
chr = g_malloc0(sizeof(CharDriverState));
|
2094 |
stdio = g_malloc0(sizeof(WinStdioCharState));
|
2095 |
|
2096 |
stdio->hStdIn = GetStdHandle(STD_INPUT_HANDLE); |
2097 |
if (stdio->hStdIn == INVALID_HANDLE_VALUE) {
|
2098 |
fprintf(stderr, "cannot open stdio: invalid handle\n");
|
2099 |
exit(1);
|
2100 |
} |
2101 |
|
2102 |
is_console = GetConsoleMode(stdio->hStdIn, &dwMode) != 0;
|
2103 |
|
2104 |
chr->opaque = stdio; |
2105 |
chr->chr_write = win_stdio_write; |
2106 |
chr->chr_close = win_stdio_close; |
2107 |
|
2108 |
if (is_console) {
|
2109 |
if (qemu_add_wait_object(stdio->hStdIn,
|
2110 |
win_stdio_wait_func, chr)) { |
2111 |
fprintf(stderr, "qemu_add_wait_object: failed\n");
|
2112 |
} |
2113 |
} else {
|
2114 |
DWORD dwId; |
2115 |
|
2116 |
stdio->hInputReadyEvent = CreateEvent(NULL, FALSE, FALSE, NULL); |
2117 |
stdio->hInputDoneEvent = CreateEvent(NULL, FALSE, FALSE, NULL); |
2118 |
stdio->hInputThread = CreateThread(NULL, 0, win_stdio_thread, |
2119 |
chr, 0, &dwId);
|
2120 |
|
2121 |
if (stdio->hInputThread == INVALID_HANDLE_VALUE
|
2122 |
|| stdio->hInputReadyEvent == INVALID_HANDLE_VALUE |
2123 |
|| stdio->hInputDoneEvent == INVALID_HANDLE_VALUE) { |
2124 |
fprintf(stderr, "cannot create stdio thread or event\n");
|
2125 |
exit(1);
|
2126 |
} |
2127 |
if (qemu_add_wait_object(stdio->hInputReadyEvent,
|
2128 |
win_stdio_thread_wait_func, chr)) { |
2129 |
fprintf(stderr, "qemu_add_wait_object: failed\n");
|
2130 |
} |
2131 |
} |
2132 |
|
2133 |
dwMode |= ENABLE_LINE_INPUT; |
2134 |
|
2135 |
if (is_console) {
|
2136 |
/* set the terminal in raw mode */
|
2137 |
/* ENABLE_QUICK_EDIT_MODE | ENABLE_EXTENDED_FLAGS */
|
2138 |
dwMode |= ENABLE_PROCESSED_INPUT; |
2139 |
} |
2140 |
|
2141 |
SetConsoleMode(stdio->hStdIn, dwMode); |
2142 |
|
2143 |
chr->chr_set_echo = qemu_chr_set_echo_win_stdio; |
2144 |
qemu_chr_fe_set_echo(chr, false);
|
2145 |
|
2146 |
return chr;
|
2147 |
} |
2148 |
#endif /* !_WIN32 */ |
2149 |
|
2150 |
|
2151 |
/***********************************************************/
|
2152 |
/* UDP Net console */
|
2153 |
|
2154 |
typedef struct { |
2155 |
int fd;
|
2156 |
GIOChannel *chan; |
2157 |
uint8_t buf[READ_BUF_LEN]; |
2158 |
int bufcnt;
|
2159 |
int bufptr;
|
2160 |
int max_size;
|
2161 |
} NetCharDriver; |
2162 |
|
2163 |
static int udp_chr_write(CharDriverState *chr, const uint8_t *buf, int len) |
2164 |
{ |
2165 |
NetCharDriver *s = chr->opaque; |
2166 |
gsize bytes_written; |
2167 |
GIOStatus status; |
2168 |
|
2169 |
status = g_io_channel_write_chars(s->chan, (const gchar *)buf, len, &bytes_written, NULL); |
2170 |
if (status == G_IO_STATUS_EOF) {
|
2171 |
return 0; |
2172 |
} else if (status != G_IO_STATUS_NORMAL) { |
2173 |
return -1; |
2174 |
} |
2175 |
|
2176 |
return bytes_written;
|
2177 |
} |
2178 |
|
2179 |
static int udp_chr_read_poll(void *opaque) |
2180 |
{ |
2181 |
CharDriverState *chr = opaque; |
2182 |
NetCharDriver *s = chr->opaque; |
2183 |
|
2184 |
s->max_size = qemu_chr_be_can_write(chr); |
2185 |
|
2186 |
/* If there were any stray characters in the queue process them
|
2187 |
* first
|
2188 |
*/
|
2189 |
while (s->max_size > 0 && s->bufptr < s->bufcnt) { |
2190 |
qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
|
2191 |
s->bufptr++; |
2192 |
s->max_size = qemu_chr_be_can_write(chr); |
2193 |
} |
2194 |
return s->max_size;
|
2195 |
} |
2196 |
|
2197 |
static gboolean udp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque) |
2198 |
{ |
2199 |
CharDriverState *chr = opaque; |
2200 |
NetCharDriver *s = chr->opaque; |
2201 |
gsize bytes_read = 0;
|
2202 |
GIOStatus status; |
2203 |
|
2204 |
if (s->max_size == 0) { |
2205 |
return TRUE;
|
2206 |
} |
2207 |
status = g_io_channel_read_chars(s->chan, (gchar *)s->buf, sizeof(s->buf),
|
2208 |
&bytes_read, NULL);
|
2209 |
s->bufcnt = bytes_read; |
2210 |
s->bufptr = s->bufcnt; |
2211 |
if (status != G_IO_STATUS_NORMAL) {
|
2212 |
remove_fd_in_watch(chr); |
2213 |
return FALSE;
|
2214 |
} |
2215 |
|
2216 |
s->bufptr = 0;
|
2217 |
while (s->max_size > 0 && s->bufptr < s->bufcnt) { |
2218 |
qemu_chr_be_write(chr, &s->buf[s->bufptr], 1);
|
2219 |
s->bufptr++; |
2220 |
s->max_size = qemu_chr_be_can_write(chr); |
2221 |
} |
2222 |
|
2223 |
return TRUE;
|
2224 |
} |
2225 |
|
2226 |
static void udp_chr_update_read_handler(CharDriverState *chr) |
2227 |
{ |
2228 |
NetCharDriver *s = chr->opaque; |
2229 |
|
2230 |
remove_fd_in_watch(chr); |
2231 |
if (s->chan) {
|
2232 |
chr->fd_in_tag = io_add_watch_poll(s->chan, udp_chr_read_poll, |
2233 |
udp_chr_read, chr); |
2234 |
} |
2235 |
} |
2236 |
|
2237 |
static void udp_chr_close(CharDriverState *chr) |
2238 |
{ |
2239 |
NetCharDriver *s = chr->opaque; |
2240 |
|
2241 |
remove_fd_in_watch(chr); |
2242 |
if (s->chan) {
|
2243 |
g_io_channel_unref(s->chan); |
2244 |
closesocket(s->fd); |
2245 |
} |
2246 |
g_free(s); |
2247 |
qemu_chr_be_event(chr, CHR_EVENT_CLOSED); |
2248 |
} |
2249 |
|
2250 |
static CharDriverState *qemu_chr_open_udp_fd(int fd) |
2251 |
{ |
2252 |
CharDriverState *chr = NULL;
|
2253 |
NetCharDriver *s = NULL;
|
2254 |
|
2255 |
chr = g_malloc0(sizeof(CharDriverState));
|
2256 |
s = g_malloc0(sizeof(NetCharDriver));
|
2257 |
|
2258 |
s->fd = fd; |
2259 |
s->chan = io_channel_from_socket(s->fd); |
2260 |
s->bufcnt = 0;
|
2261 |
s->bufptr = 0;
|
2262 |
chr->opaque = s; |
2263 |
chr->chr_write = udp_chr_write; |
2264 |
chr->chr_update_read_handler = udp_chr_update_read_handler; |
2265 |
chr->chr_close = udp_chr_close; |
2266 |
/* be isn't opened until we get a connection */
|
2267 |
chr->explicit_be_open = true;
|
2268 |
return chr;
|
2269 |
} |
2270 |
|
2271 |
static CharDriverState *qemu_chr_open_udp(QemuOpts *opts)
|
2272 |
{ |
2273 |
Error *local_err = NULL;
|
2274 |
int fd = -1; |
2275 |
|
2276 |
fd = inet_dgram_opts(opts, &local_err); |
2277 |
if (fd < 0) { |
2278 |
qerror_report_err(local_err); |
2279 |
error_free(local_err); |
2280 |
return NULL; |
2281 |
} |
2282 |
return qemu_chr_open_udp_fd(fd);
|
2283 |
} |
2284 |
|
2285 |
/***********************************************************/
|
2286 |
/* TCP Net console */
|
2287 |
|
2288 |
typedef struct { |
2289 |
|
2290 |
GIOChannel *chan, *listen_chan; |
2291 |
guint listen_tag; |
2292 |
int fd, listen_fd;
|
2293 |
int connected;
|
2294 |
int max_size;
|
2295 |
int do_telnetopt;
|
2296 |
int do_nodelay;
|
2297 |
int is_unix;
|
2298 |
int msgfd;
|
2299 |
} TCPCharDriver; |
2300 |
|
2301 |
static gboolean tcp_chr_accept(GIOChannel *chan, GIOCondition cond, void *opaque); |
2302 |
|
2303 |
static int tcp_chr_write(CharDriverState *chr, const uint8_t *buf, int len) |
2304 |
{ |
2305 |
TCPCharDriver *s = chr->opaque; |
2306 |
if (s->connected) {
|
2307 |
return io_channel_send(s->chan, buf, len);
|
2308 |
} else {
|
2309 |
/* XXX: indicate an error ? */
|
2310 |
return len;
|
2311 |
} |
2312 |
} |
2313 |
|
2314 |
static int tcp_chr_read_poll(void *opaque) |
2315 |
{ |
2316 |
CharDriverState *chr = opaque; |
2317 |
TCPCharDriver *s = chr->opaque; |
2318 |
if (!s->connected)
|
2319 |
return 0; |
2320 |
s->max_size = qemu_chr_be_can_write(chr); |
2321 |
return s->max_size;
|
2322 |
} |
2323 |
|
2324 |
#define IAC 255 |
2325 |
#define IAC_BREAK 243 |
2326 |
static void tcp_chr_process_IAC_bytes(CharDriverState *chr, |
2327 |
TCPCharDriver *s, |
2328 |
uint8_t *buf, int *size)
|
2329 |
{ |
2330 |
/* Handle any telnet client's basic IAC options to satisfy char by
|
2331 |
* char mode with no echo. All IAC options will be removed from
|
2332 |
* the buf and the do_telnetopt variable will be used to track the
|
2333 |
* state of the width of the IAC information.
|
2334 |
*
|
2335 |
* IAC commands come in sets of 3 bytes with the exception of the
|
2336 |
* "IAC BREAK" command and the double IAC.
|
2337 |
*/
|
2338 |
|
2339 |
int i;
|
2340 |
int j = 0; |
2341 |
|
2342 |
for (i = 0; i < *size; i++) { |
2343 |
if (s->do_telnetopt > 1) { |
2344 |
if ((unsigned char)buf[i] == IAC && s->do_telnetopt == 2) { |
2345 |
/* Double IAC means send an IAC */
|
2346 |
if (j != i)
|
2347 |
buf[j] = buf[i]; |
2348 |
j++; |
2349 |
s->do_telnetopt = 1;
|
2350 |
} else {
|
2351 |
if ((unsigned char)buf[i] == IAC_BREAK && s->do_telnetopt == 2) { |
2352 |
/* Handle IAC break commands by sending a serial break */
|
2353 |
qemu_chr_be_event(chr, CHR_EVENT_BREAK); |
2354 |
s->do_telnetopt++; |
2355 |
} |
2356 |
s->do_telnetopt++; |
2357 |
} |
2358 |
if (s->do_telnetopt >= 4) { |
2359 |
s->do_telnetopt = 1;
|
2360 |
} |
2361 |
} else {
|
2362 |
if ((unsigned char)buf[i] == IAC) { |
2363 |
s->do_telnetopt = 2;
|
2364 |
} else {
|
2365 |
if (j != i)
|
2366 |
buf[j] = buf[i]; |
2367 |
j++; |
2368 |
} |
2369 |
} |
2370 |
} |
2371 |
*size = j; |
2372 |
} |
2373 |
|
2374 |
static int tcp_get_msgfd(CharDriverState *chr) |
2375 |
{ |
2376 |
TCPCharDriver *s = chr->opaque; |
2377 |
int fd = s->msgfd;
|
2378 |
s->msgfd = -1;
|
2379 |
return fd;
|
2380 |
} |
2381 |
|
2382 |
#ifndef _WIN32
|
2383 |
static void unix_process_msgfd(CharDriverState *chr, struct msghdr *msg) |
2384 |
{ |
2385 |
TCPCharDriver *s = chr->opaque; |
2386 |
struct cmsghdr *cmsg;
|
2387 |
|
2388 |
for (cmsg = CMSG_FIRSTHDR(msg); cmsg; cmsg = CMSG_NXTHDR(msg, cmsg)) {
|
2389 |
int fd;
|
2390 |
|
2391 |
if (cmsg->cmsg_len != CMSG_LEN(sizeof(int)) || |
2392 |
cmsg->cmsg_level != SOL_SOCKET || |
2393 |
cmsg->cmsg_type != SCM_RIGHTS) |
2394 |
continue;
|
2395 |
|
2396 |
fd = *((int *)CMSG_DATA(cmsg));
|
2397 |
if (fd < 0) |
2398 |
continue;
|
2399 |
|
2400 |
/* O_NONBLOCK is preserved across SCM_RIGHTS so reset it */
|
2401 |
qemu_set_block(fd); |
2402 |
|
2403 |
#ifndef MSG_CMSG_CLOEXEC
|
2404 |
qemu_set_cloexec(fd); |
2405 |
#endif
|
2406 |
if (s->msgfd != -1) |
2407 |
close(s->msgfd); |
2408 |
s->msgfd = fd; |
2409 |
} |
2410 |
} |
2411 |
|
2412 |
static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len) |
2413 |
{ |
2414 |
TCPCharDriver *s = chr->opaque; |
2415 |
struct msghdr msg = { NULL, }; |
2416 |
struct iovec iov[1]; |
2417 |
union {
|
2418 |
struct cmsghdr cmsg;
|
2419 |
char control[CMSG_SPACE(sizeof(int))]; |
2420 |
} msg_control; |
2421 |
int flags = 0; |
2422 |
ssize_t ret; |
2423 |
|
2424 |
iov[0].iov_base = buf;
|
2425 |
iov[0].iov_len = len;
|
2426 |
|
2427 |
msg.msg_iov = iov; |
2428 |
msg.msg_iovlen = 1;
|
2429 |
msg.msg_control = &msg_control; |
2430 |
msg.msg_controllen = sizeof(msg_control);
|
2431 |
|
2432 |
#ifdef MSG_CMSG_CLOEXEC
|
2433 |
flags |= MSG_CMSG_CLOEXEC; |
2434 |
#endif
|
2435 |
ret = recvmsg(s->fd, &msg, flags); |
2436 |
if (ret > 0 && s->is_unix) { |
2437 |
unix_process_msgfd(chr, &msg); |
2438 |
} |
2439 |
|
2440 |
return ret;
|
2441 |
} |
2442 |
#else
|
2443 |
static ssize_t tcp_chr_recv(CharDriverState *chr, char *buf, size_t len) |
2444 |
{ |
2445 |
TCPCharDriver *s = chr->opaque; |
2446 |
return qemu_recv(s->fd, buf, len, 0); |
2447 |
} |
2448 |
#endif
|
2449 |
|
2450 |
static GSource *tcp_chr_add_watch(CharDriverState *chr, GIOCondition cond)
|
2451 |
{ |
2452 |
TCPCharDriver *s = chr->opaque; |
2453 |
return g_io_create_watch(s->chan, cond);
|
2454 |
} |
2455 |
|
2456 |
static gboolean tcp_chr_read(GIOChannel *chan, GIOCondition cond, void *opaque) |
2457 |
{ |
2458 |
CharDriverState *chr = opaque; |
2459 |
TCPCharDriver *s = chr->opaque; |
2460 |
uint8_t buf[READ_BUF_LEN]; |
2461 |
int len, size;
|
2462 |
|
2463 |
if (!s->connected || s->max_size <= 0) { |
2464 |
return TRUE;
|
2465 |
} |
2466 |
len = sizeof(buf);
|
2467 |
if (len > s->max_size)
|
2468 |
len = s->max_size; |
2469 |
size = tcp_chr_recv(chr, (void *)buf, len);
|
2470 |
if (size == 0) { |
2471 |
/* connection closed */
|
2472 |
s->connected = 0;
|
2473 |
if (s->listen_chan) {
|
2474 |
s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr); |
2475 |
} |
2476 |
remove_fd_in_watch(chr); |
2477 |
g_io_channel_unref(s->chan); |
2478 |
s->chan = NULL;
|
2479 |
closesocket(s->fd); |
2480 |
s->fd = -1;
|
2481 |
qemu_chr_be_event(chr, CHR_EVENT_CLOSED); |
2482 |
} else if (size > 0) { |
2483 |
if (s->do_telnetopt)
|
2484 |
tcp_chr_process_IAC_bytes(chr, s, buf, &size); |
2485 |
if (size > 0) |
2486 |
qemu_chr_be_write(chr, buf, size); |
2487 |
} |
2488 |
|
2489 |
return TRUE;
|
2490 |
} |
2491 |
|
2492 |
#ifndef _WIN32
|
2493 |
CharDriverState *qemu_chr_open_eventfd(int eventfd)
|
2494 |
{ |
2495 |
return qemu_chr_open_fd(eventfd, eventfd);
|
2496 |
} |
2497 |
#endif
|
2498 |
|
2499 |
static void tcp_chr_connect(void *opaque) |
2500 |
{ |
2501 |
CharDriverState *chr = opaque; |
2502 |
TCPCharDriver *s = chr->opaque; |
2503 |
|
2504 |
s->connected = 1;
|
2505 |
if (s->chan) {
|
2506 |
chr->fd_in_tag = io_add_watch_poll(s->chan, tcp_chr_read_poll, |
2507 |
tcp_chr_read, chr); |
2508 |
} |
2509 |
qemu_chr_be_generic_open(chr); |
2510 |
} |
2511 |
|
2512 |
#define IACSET(x,a,b,c) x[0] = a; x[1] = b; x[2] = c; |
2513 |
static void tcp_chr_telnet_init(int fd) |
2514 |
{ |
2515 |
char buf[3]; |
2516 |
/* Send the telnet negotion to put telnet in binary, no echo, single char mode */
|
2517 |
IACSET(buf, 0xff, 0xfb, 0x01); /* IAC WILL ECHO */ |
2518 |
send(fd, (char *)buf, 3, 0); |
2519 |
IACSET(buf, 0xff, 0xfb, 0x03); /* IAC WILL Suppress go ahead */ |
2520 |
send(fd, (char *)buf, 3, 0); |
2521 |
IACSET(buf, 0xff, 0xfb, 0x00); /* IAC WILL Binary */ |
2522 |
send(fd, (char *)buf, 3, 0); |
2523 |
IACSET(buf, 0xff, 0xfd, 0x00); /* IAC DO Binary */ |
2524 |
send(fd, (char *)buf, 3, 0); |
2525 |
} |
2526 |
|
2527 |
static int tcp_chr_add_client(CharDriverState *chr, int fd) |
2528 |
{ |
2529 |
TCPCharDriver *s = chr->opaque; |
2530 |
if (s->fd != -1) |
2531 |
return -1; |
2532 |
|
2533 |
qemu_set_nonblock(fd); |
2534 |
if (s->do_nodelay)
|
2535 |
socket_set_nodelay(fd); |
2536 |
s->fd = fd; |
2537 |
s->chan = io_channel_from_socket(fd); |
2538 |
if (s->listen_tag) {
|
2539 |
g_source_remove(s->listen_tag); |
2540 |
s->listen_tag = 0;
|
2541 |
} |
2542 |
tcp_chr_connect(chr); |
2543 |
|
2544 |
return 0; |
2545 |
} |
2546 |
|
2547 |
static gboolean tcp_chr_accept(GIOChannel *channel, GIOCondition cond, void *opaque) |
2548 |
{ |
2549 |
CharDriverState *chr = opaque; |
2550 |
TCPCharDriver *s = chr->opaque; |
2551 |
struct sockaddr_in saddr;
|
2552 |
#ifndef _WIN32
|
2553 |
struct sockaddr_un uaddr;
|
2554 |
#endif
|
2555 |
struct sockaddr *addr;
|
2556 |
socklen_t len; |
2557 |
int fd;
|
2558 |
|
2559 |
for(;;) {
|
2560 |
#ifndef _WIN32
|
2561 |
if (s->is_unix) {
|
2562 |
len = sizeof(uaddr);
|
2563 |
addr = (struct sockaddr *)&uaddr;
|
2564 |
} else
|
2565 |
#endif
|
2566 |
{ |
2567 |
len = sizeof(saddr);
|
2568 |
addr = (struct sockaddr *)&saddr;
|
2569 |
} |
2570 |
fd = qemu_accept(s->listen_fd, addr, &len); |
2571 |
if (fd < 0 && errno != EINTR) { |
2572 |
s->listen_tag = 0;
|
2573 |
return FALSE;
|
2574 |
} else if (fd >= 0) { |
2575 |
if (s->do_telnetopt)
|
2576 |
tcp_chr_telnet_init(fd); |
2577 |
break;
|
2578 |
} |
2579 |
} |
2580 |
if (tcp_chr_add_client(chr, fd) < 0) |
2581 |
close(fd); |
2582 |
|
2583 |
return TRUE;
|
2584 |
} |
2585 |
|
2586 |
static void tcp_chr_close(CharDriverState *chr) |
2587 |
{ |
2588 |
TCPCharDriver *s = chr->opaque; |
2589 |
if (s->fd >= 0) { |
2590 |
remove_fd_in_watch(chr); |
2591 |
if (s->chan) {
|
2592 |
g_io_channel_unref(s->chan); |
2593 |
} |
2594 |
closesocket(s->fd); |
2595 |
} |
2596 |
if (s->listen_fd >= 0) { |
2597 |
if (s->listen_tag) {
|
2598 |
g_source_remove(s->listen_tag); |
2599 |
s->listen_tag = 0;
|
2600 |
} |
2601 |
if (s->listen_chan) {
|
2602 |
g_io_channel_unref(s->listen_chan); |
2603 |
} |
2604 |
closesocket(s->listen_fd); |
2605 |
} |
2606 |
g_free(s); |
2607 |
qemu_chr_be_event(chr, CHR_EVENT_CLOSED); |
2608 |
} |
2609 |
|
2610 |
static CharDriverState *qemu_chr_open_socket_fd(int fd, bool do_nodelay, |
2611 |
bool is_listen, bool is_telnet, |
2612 |
bool is_waitconnect,
|
2613 |
Error **errp) |
2614 |
{ |
2615 |
CharDriverState *chr = NULL;
|
2616 |
TCPCharDriver *s = NULL;
|
2617 |
char host[NI_MAXHOST], serv[NI_MAXSERV];
|
2618 |
const char *left = "", *right = ""; |
2619 |
struct sockaddr_storage ss;
|
2620 |
socklen_t ss_len = sizeof(ss);
|
2621 |
|
2622 |
memset(&ss, 0, ss_len);
|
2623 |
if (getsockname(fd, (struct sockaddr *) &ss, &ss_len) != 0) { |
2624 |
error_setg_errno(errp, errno, "getsockname");
|
2625 |
return NULL; |
2626 |
} |
2627 |
|
2628 |
chr = g_malloc0(sizeof(CharDriverState));
|
2629 |
s = g_malloc0(sizeof(TCPCharDriver));
|
2630 |
|
2631 |
s->connected = 0;
|
2632 |
s->fd = -1;
|
2633 |
s->listen_fd = -1;
|
2634 |
s->msgfd = -1;
|
2635 |
|
2636 |
chr->filename = g_malloc(256);
|
2637 |
switch (ss.ss_family) {
|
2638 |
#ifndef _WIN32
|
2639 |
case AF_UNIX:
|
2640 |
s->is_unix = 1;
|
2641 |
snprintf(chr->filename, 256, "unix:%s%s", |
2642 |
((struct sockaddr_un *)(&ss))->sun_path,
|
2643 |
is_listen ? ",server" : ""); |
2644 |
break;
|
2645 |
#endif
|
2646 |
case AF_INET6:
|
2647 |
left = "[";
|
2648 |
right = "]";
|
2649 |
/* fall through */
|
2650 |
case AF_INET:
|
2651 |
s->do_nodelay = do_nodelay; |
2652 |
getnameinfo((struct sockaddr *) &ss, ss_len, host, sizeof(host), |
2653 |
serv, sizeof(serv), NI_NUMERICHOST | NI_NUMERICSERV);
|
2654 |
snprintf(chr->filename, 256, "%s:%s%s%s:%s%s", |
2655 |
is_telnet ? "telnet" : "tcp", |
2656 |
left, host, right, serv, |
2657 |
is_listen ? ",server" : ""); |
2658 |
break;
|
2659 |
} |
2660 |
|
2661 |
chr->opaque = s; |
2662 |
chr->chr_write = tcp_chr_write; |
2663 |
chr->chr_close = tcp_chr_close; |
2664 |
chr->get_msgfd = tcp_get_msgfd; |
2665 |
chr->chr_add_client = tcp_chr_add_client; |
2666 |
chr->chr_add_watch = tcp_chr_add_watch; |
2667 |
/* be isn't opened until we get a connection */
|
2668 |
chr->explicit_be_open = true;
|
2669 |
|
2670 |
if (is_listen) {
|
2671 |
s->listen_fd = fd; |
2672 |
s->listen_chan = io_channel_from_socket(s->listen_fd); |
2673 |
s->listen_tag = g_io_add_watch(s->listen_chan, G_IO_IN, tcp_chr_accept, chr); |
2674 |
if (is_telnet) {
|
2675 |
s->do_telnetopt = 1;
|
2676 |
} |
2677 |
} else {
|
2678 |
s->connected = 1;
|
2679 |
s->fd = fd; |
2680 |
socket_set_nodelay(fd); |
2681 |
s->chan = io_channel_from_socket(s->fd); |
2682 |
tcp_chr_connect(chr); |
2683 |
} |
2684 |
|
2685 |
if (is_listen && is_waitconnect) {
|
2686 |
fprintf(stderr, "QEMU waiting for connection on: %s\n",
|
2687 |
chr->filename); |
2688 |
tcp_chr_accept(s->listen_chan, G_IO_IN, chr); |
2689 |
qemu_set_nonblock(s->listen_fd); |
2690 |
} |
2691 |
return chr;
|
2692 |
} |
2693 |
|
2694 |
static CharDriverState *qemu_chr_open_socket(QemuOpts *opts)
|
2695 |
{ |
2696 |
CharDriverState *chr = NULL;
|
2697 |
Error *local_err = NULL;
|
2698 |
int fd = -1; |
2699 |
|
2700 |
bool is_listen = qemu_opt_get_bool(opts, "server", false); |
2701 |
bool is_waitconnect = is_listen && qemu_opt_get_bool(opts, "wait", true); |
2702 |
bool is_telnet = qemu_opt_get_bool(opts, "telnet", false); |
2703 |
bool do_nodelay = !qemu_opt_get_bool(opts, "delay", true); |
2704 |
bool is_unix = qemu_opt_get(opts, "path") != NULL; |
2705 |
|
2706 |
if (is_unix) {
|
2707 |
if (is_listen) {
|
2708 |
fd = unix_listen_opts(opts, &local_err); |
2709 |
} else {
|
2710 |
fd = unix_connect_opts(opts, &local_err, NULL, NULL); |
2711 |
} |
2712 |
} else {
|
2713 |
if (is_listen) {
|
2714 |
fd = inet_listen_opts(opts, 0, &local_err);
|
2715 |
} else {
|
2716 |
fd = inet_connect_opts(opts, &local_err, NULL, NULL); |
2717 |
} |
2718 |
} |
2719 |
if (fd < 0) { |
2720 |
goto fail;
|
2721 |
} |
2722 |
|
2723 |
if (!is_waitconnect)
|
2724 |
qemu_set_nonblock(fd); |
2725 |
|
2726 |
chr = qemu_chr_open_socket_fd(fd, do_nodelay, is_listen, is_telnet, |
2727 |
is_waitconnect, &local_err); |
2728 |
if (local_err) {
|
2729 |
goto fail;
|
2730 |
} |
2731 |
return chr;
|
2732 |
|
2733 |
|
2734 |
fail:
|
2735 |
if (local_err) {
|
2736 |
qerror_report_err(local_err); |
2737 |
error_free(local_err); |
2738 |
} |
2739 |
if (fd >= 0) { |
2740 |
closesocket(fd); |
2741 |
} |
2742 |
if (chr) {
|
2743 |
g_free(chr->opaque); |
2744 |
g_free(chr); |
2745 |
} |
2746 |
return NULL; |
2747 |
} |
2748 |
|
2749 |
/*********************************************************/
|
2750 |
/* Ring buffer chardev */
|
2751 |
|
2752 |
typedef struct { |
2753 |
size_t size; |
2754 |
size_t prod; |
2755 |
size_t cons; |
2756 |
uint8_t *cbuf; |
2757 |
} RingBufCharDriver; |
2758 |
|
2759 |
static size_t ringbuf_count(const CharDriverState *chr) |
2760 |
{ |
2761 |
const RingBufCharDriver *d = chr->opaque;
|
2762 |
|
2763 |
return d->prod - d->cons;
|
2764 |
} |
2765 |
|
2766 |
static int ringbuf_chr_write(CharDriverState *chr, const uint8_t *buf, int len) |
2767 |
{ |
2768 |
RingBufCharDriver *d = chr->opaque; |
2769 |
int i;
|
2770 |
|
2771 |
if (!buf || (len < 0)) { |
2772 |
return -1; |
2773 |
} |
2774 |
|
2775 |
for (i = 0; i < len; i++ ) { |
2776 |
d->cbuf[d->prod++ & (d->size - 1)] = buf[i];
|
2777 |
if (d->prod - d->cons > d->size) {
|
2778 |
d->cons = d->prod - d->size; |
2779 |
} |
2780 |
} |
2781 |
|
2782 |
return 0; |
2783 |
} |
2784 |
|
2785 |
static int ringbuf_chr_read(CharDriverState *chr, uint8_t *buf, int len) |
2786 |
{ |
2787 |
RingBufCharDriver *d = chr->opaque; |
2788 |
int i;
|
2789 |
|
2790 |
for (i = 0; i < len && d->cons != d->prod; i++) { |
2791 |
buf[i] = d->cbuf[d->cons++ & (d->size - 1)];
|
2792 |
} |
2793 |
|
2794 |
return i;
|
2795 |
} |
2796 |
|
2797 |
static void ringbuf_chr_close(struct CharDriverState *chr) |
2798 |
{ |
2799 |
RingBufCharDriver *d = chr->opaque; |
2800 |
|
2801 |
g_free(d->cbuf); |
2802 |
g_free(d); |
2803 |
chr->opaque = NULL;
|
2804 |
} |
2805 |
|
2806 |
static CharDriverState *qemu_chr_open_ringbuf(ChardevRingbuf *opts,
|
2807 |
Error **errp) |
2808 |
{ |
2809 |
CharDriverState *chr; |
2810 |
RingBufCharDriver *d; |
2811 |
|
2812 |
chr = g_malloc0(sizeof(CharDriverState));
|
2813 |
d = g_malloc(sizeof(*d));
|
2814 |
|
2815 |
d->size = opts->has_size ? opts->size : 65536;
|
2816 |
|
2817 |
/* The size must be power of 2 */
|
2818 |
if (d->size & (d->size - 1)) { |
2819 |
error_setg(errp, "size of ringbuf chardev must be power of two");
|
2820 |
goto fail;
|
2821 |
} |
2822 |
|
2823 |
d->prod = 0;
|
2824 |
d->cons = 0;
|
2825 |
d->cbuf = g_malloc0(d->size); |
2826 |
|
2827 |
chr->opaque = d; |
2828 |
chr->chr_write = ringbuf_chr_write; |
2829 |
chr->chr_close = ringbuf_chr_close; |
2830 |
|
2831 |
return chr;
|
2832 |
|
2833 |
fail:
|
2834 |
g_free(d); |
2835 |
g_free(chr); |
2836 |
return NULL; |
2837 |
} |
2838 |
|
2839 |
static bool chr_is_ringbuf(const CharDriverState *chr) |
2840 |
{ |
2841 |
return chr->chr_write == ringbuf_chr_write;
|
2842 |
} |
2843 |
|
2844 |
void qmp_ringbuf_write(const char *device, const char *data, |
2845 |
bool has_format, enum DataFormat format, |
2846 |
Error **errp) |
2847 |
{ |
2848 |
CharDriverState *chr; |
2849 |
const uint8_t *write_data;
|
2850 |
int ret;
|
2851 |
gsize write_count; |
2852 |
|
2853 |
chr = qemu_chr_find(device); |
2854 |
if (!chr) {
|
2855 |
error_setg(errp, "Device '%s' not found", device);
|
2856 |
return;
|
2857 |
} |
2858 |
|
2859 |
if (!chr_is_ringbuf(chr)) {
|
2860 |
error_setg(errp,"%s is not a ringbuf device", device);
|
2861 |
return;
|
2862 |
} |
2863 |
|
2864 |
if (has_format && (format == DATA_FORMAT_BASE64)) {
|
2865 |
write_data = g_base64_decode(data, &write_count); |
2866 |
} else {
|
2867 |
write_data = (uint8_t *)data; |
2868 |
write_count = strlen(data); |
2869 |
} |
2870 |
|
2871 |
ret = ringbuf_chr_write(chr, write_data, write_count); |
2872 |
|
2873 |
if (write_data != (uint8_t *)data) {
|
2874 |
g_free((void *)write_data);
|
2875 |
} |
2876 |
|
2877 |
if (ret < 0) { |
2878 |
error_setg(errp, "Failed to write to device %s", device);
|
2879 |
return;
|
2880 |
} |
2881 |
} |
2882 |
|
2883 |
char *qmp_ringbuf_read(const char *device, int64_t size, |
2884 |
bool has_format, enum DataFormat format, |
2885 |
Error **errp) |
2886 |
{ |
2887 |
CharDriverState *chr; |
2888 |
uint8_t *read_data; |
2889 |
size_t count; |
2890 |
char *data;
|
2891 |
|
2892 |
chr = qemu_chr_find(device); |
2893 |
if (!chr) {
|
2894 |
error_setg(errp, "Device '%s' not found", device);
|
2895 |
return NULL; |
2896 |
} |
2897 |
|
2898 |
if (!chr_is_ringbuf(chr)) {
|
2899 |
error_setg(errp,"%s is not a ringbuf device", device);
|
2900 |
return NULL; |
2901 |
} |
2902 |
|
2903 |
if (size <= 0) { |
2904 |
error_setg(errp, "size must be greater than zero");
|
2905 |
return NULL; |
2906 |
} |
2907 |
|
2908 |
count = ringbuf_count(chr); |
2909 |
size = size > count ? count : size; |
2910 |
read_data = g_malloc(size + 1);
|
2911 |
|
2912 |
ringbuf_chr_read(chr, read_data, size); |
2913 |
|
2914 |
if (has_format && (format == DATA_FORMAT_BASE64)) {
|
2915 |
data = g_base64_encode(read_data, size); |
2916 |
g_free(read_data); |
2917 |
} else {
|
2918 |
/*
|
2919 |
* FIXME should read only complete, valid UTF-8 characters up
|
2920 |
* to @size bytes. Invalid sequences should be replaced by a
|
2921 |
* suitable replacement character. Except when (and only
|
2922 |
* when) ring buffer lost characters since last read, initial
|
2923 |
* continuation characters should be dropped.
|
2924 |
*/
|
2925 |
read_data[size] = 0;
|
2926 |
data = (char *)read_data;
|
2927 |
} |
2928 |
|
2929 |
return data;
|
2930 |
} |
2931 |
|
2932 |
QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename) |
2933 |
{ |
2934 |
char host[65], port[33], width[8], height[8]; |
2935 |
int pos;
|
2936 |
const char *p; |
2937 |
QemuOpts *opts; |
2938 |
Error *local_err = NULL;
|
2939 |
|
2940 |
opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err); |
2941 |
if (local_err) {
|
2942 |
qerror_report_err(local_err); |
2943 |
error_free(local_err); |
2944 |
return NULL; |
2945 |
} |
2946 |
|
2947 |
if (strstart(filename, "mon:", &p)) { |
2948 |
filename = p; |
2949 |
qemu_opt_set(opts, "mux", "on"); |
2950 |
if (strcmp(filename, "stdio") == 0) { |
2951 |
/* Monitor is muxed to stdio: do not exit on Ctrl+C by default
|
2952 |
* but pass it to the guest. Handle this only for compat syntax,
|
2953 |
* for -chardev syntax we have special option for this.
|
2954 |
* This is what -nographic did, redirecting+muxing serial+monitor
|
2955 |
* to stdio causing Ctrl+C to be passed to guest. */
|
2956 |
qemu_opt_set(opts, "signal", "off"); |
2957 |
} |
2958 |
} |
2959 |
|
2960 |
if (strcmp(filename, "null") == 0 || |
2961 |
strcmp(filename, "pty") == 0 || |
2962 |
strcmp(filename, "msmouse") == 0 || |
2963 |
strcmp(filename, "braille") == 0 || |
2964 |
strcmp(filename, "stdio") == 0) { |
2965 |
qemu_opt_set(opts, "backend", filename);
|
2966 |
return opts;
|
2967 |
} |
2968 |
if (strstart(filename, "vc", &p)) { |
2969 |
qemu_opt_set(opts, "backend", "vc"); |
2970 |
if (*p == ':') { |
2971 |
if (sscanf(p+1, "%7[0-9]x%7[0-9]", width, height) == 2) { |
2972 |
/* pixels */
|
2973 |
qemu_opt_set(opts, "width", width);
|
2974 |
qemu_opt_set(opts, "height", height);
|
2975 |
} else if (sscanf(p+1, "%7[0-9]Cx%7[0-9]C", width, height) == 2) { |
2976 |
/* chars */
|
2977 |
qemu_opt_set(opts, "cols", width);
|
2978 |
qemu_opt_set(opts, "rows", height);
|
2979 |
} else {
|
2980 |
goto fail;
|
2981 |
} |
2982 |
} |
2983 |
return opts;
|
2984 |
} |
2985 |
if (strcmp(filename, "con:") == 0) { |
2986 |
qemu_opt_set(opts, "backend", "console"); |
2987 |
return opts;
|
2988 |
} |
2989 |
if (strstart(filename, "COM", NULL)) { |
2990 |
qemu_opt_set(opts, "backend", "serial"); |
2991 |
qemu_opt_set(opts, "path", filename);
|
2992 |
return opts;
|
2993 |
} |
2994 |
if (strstart(filename, "file:", &p)) { |
2995 |
qemu_opt_set(opts, "backend", "file"); |
2996 |
qemu_opt_set(opts, "path", p);
|
2997 |
return opts;
|
2998 |
} |
2999 |
if (strstart(filename, "pipe:", &p)) { |
3000 |
qemu_opt_set(opts, "backend", "pipe"); |
3001 |
qemu_opt_set(opts, "path", p);
|
3002 |
return opts;
|
3003 |
} |
3004 |
if (strstart(filename, "tcp:", &p) || |
3005 |
strstart(filename, "telnet:", &p)) {
|
3006 |
if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) { |
3007 |
host[0] = 0; |
3008 |
if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) |
3009 |
goto fail;
|
3010 |
} |
3011 |
qemu_opt_set(opts, "backend", "socket"); |
3012 |
qemu_opt_set(opts, "host", host);
|
3013 |
qemu_opt_set(opts, "port", port);
|
3014 |
if (p[pos] == ',') { |
3015 |
if (qemu_opts_do_parse(opts, p+pos+1, NULL) != 0) |
3016 |
goto fail;
|
3017 |
} |
3018 |
if (strstart(filename, "telnet:", &p)) |
3019 |
qemu_opt_set(opts, "telnet", "on"); |
3020 |
return opts;
|
3021 |
} |
3022 |
if (strstart(filename, "udp:", &p)) { |
3023 |
qemu_opt_set(opts, "backend", "udp"); |
3024 |
if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) { |
3025 |
host[0] = 0; |
3026 |
if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) { |
3027 |
goto fail;
|
3028 |
} |
3029 |
} |
3030 |
qemu_opt_set(opts, "host", host);
|
3031 |
qemu_opt_set(opts, "port", port);
|
3032 |
if (p[pos] == '@') { |
3033 |
p += pos + 1;
|
3034 |
if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) { |
3035 |
host[0] = 0; |
3036 |
if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) { |
3037 |
goto fail;
|
3038 |
} |
3039 |
} |
3040 |
qemu_opt_set(opts, "localaddr", host);
|
3041 |
qemu_opt_set(opts, "localport", port);
|
3042 |
} |
3043 |
return opts;
|
3044 |
} |
3045 |
if (strstart(filename, "unix:", &p)) { |
3046 |
qemu_opt_set(opts, "backend", "socket"); |
3047 |
if (qemu_opts_do_parse(opts, p, "path") != 0) |
3048 |
goto fail;
|
3049 |
return opts;
|
3050 |
} |
3051 |
if (strstart(filename, "/dev/parport", NULL) || |
3052 |
strstart(filename, "/dev/ppi", NULL)) { |
3053 |
qemu_opt_set(opts, "backend", "parport"); |
3054 |
qemu_opt_set(opts, "path", filename);
|
3055 |
return opts;
|
3056 |
} |
3057 |
if (strstart(filename, "/dev/", NULL)) { |
3058 |
qemu_opt_set(opts, "backend", "tty"); |
3059 |
qemu_opt_set(opts, "path", filename);
|
3060 |
return opts;
|
3061 |
} |
3062 |
|
3063 |
fail:
|
3064 |
qemu_opts_del(opts); |
3065 |
return NULL; |
3066 |
} |
3067 |
|
3068 |
static void qemu_chr_parse_file_out(QemuOpts *opts, ChardevBackend *backend, |
3069 |
Error **errp) |
3070 |
{ |
3071 |
const char *path = qemu_opt_get(opts, "path"); |
3072 |
|
3073 |
if (path == NULL) { |
3074 |
error_setg(errp, "chardev: file: no filename given");
|
3075 |
return;
|
3076 |
} |
3077 |
backend->file = g_new0(ChardevFile, 1);
|
3078 |
backend->file->out = g_strdup(path); |
3079 |
} |
3080 |
|
3081 |
static void qemu_chr_parse_stdio(QemuOpts *opts, ChardevBackend *backend, |
3082 |
Error **errp) |
3083 |
{ |
3084 |
backend->stdio = g_new0(ChardevStdio, 1);
|
3085 |
backend->stdio->has_signal = true;
|
3086 |
backend->stdio->signal = qemu_opt_get_bool(opts, "signal", true); |
3087 |
} |
3088 |
|
3089 |
static void qemu_chr_parse_serial(QemuOpts *opts, ChardevBackend *backend, |
3090 |
Error **errp) |
3091 |
{ |
3092 |
const char *device = qemu_opt_get(opts, "path"); |
3093 |
|
3094 |
if (device == NULL) { |
3095 |
error_setg(errp, "chardev: serial/tty: no device path given");
|
3096 |
return;
|
3097 |
} |
3098 |
backend->serial = g_new0(ChardevHostdev, 1);
|
3099 |
backend->serial->device = g_strdup(device); |
3100 |
} |
3101 |
|
3102 |
static void qemu_chr_parse_parallel(QemuOpts *opts, ChardevBackend *backend, |
3103 |
Error **errp) |
3104 |
{ |
3105 |
const char *device = qemu_opt_get(opts, "path"); |
3106 |
|
3107 |
if (device == NULL) { |
3108 |
error_setg(errp, "chardev: parallel: no device path given");
|
3109 |
return;
|
3110 |
} |
3111 |
backend->parallel = g_new0(ChardevHostdev, 1);
|
3112 |
backend->parallel->device = g_strdup(device); |
3113 |
} |
3114 |
|
3115 |
static void qemu_chr_parse_pipe(QemuOpts *opts, ChardevBackend *backend, |
3116 |
Error **errp) |
3117 |
{ |
3118 |
const char *device = qemu_opt_get(opts, "path"); |
3119 |
|
3120 |
if (device == NULL) { |
3121 |
error_setg(errp, "chardev: pipe: no device path given");
|
3122 |
return;
|
3123 |
} |
3124 |
backend->pipe = g_new0(ChardevHostdev, 1);
|
3125 |
backend->pipe->device = g_strdup(device); |
3126 |
} |
3127 |
|
3128 |
static void qemu_chr_parse_ringbuf(QemuOpts *opts, ChardevBackend *backend, |
3129 |
Error **errp) |
3130 |
{ |
3131 |
int val;
|
3132 |
|
3133 |
backend->ringbuf = g_new0(ChardevRingbuf, 1);
|
3134 |
|
3135 |
val = qemu_opt_get_size(opts, "size", 0); |
3136 |
if (val != 0) { |
3137 |
backend->ringbuf->has_size = true;
|
3138 |
backend->ringbuf->size = val; |
3139 |
} |
3140 |
} |
3141 |
|
3142 |
static void qemu_chr_parse_mux(QemuOpts *opts, ChardevBackend *backend, |
3143 |
Error **errp) |
3144 |
{ |
3145 |
const char *chardev = qemu_opt_get(opts, "chardev"); |
3146 |
|
3147 |
if (chardev == NULL) { |
3148 |
error_setg(errp, "chardev: mux: no chardev given");
|
3149 |
return;
|
3150 |
} |
3151 |
backend->mux = g_new0(ChardevMux, 1);
|
3152 |
backend->mux->chardev = g_strdup(chardev); |
3153 |
} |
3154 |
|
3155 |
typedef struct CharDriver { |
3156 |
const char *name; |
3157 |
/* old, pre qapi */
|
3158 |
CharDriverState *(*open)(QemuOpts *opts); |
3159 |
/* new, qapi-based */
|
3160 |
ChardevBackendKind kind; |
3161 |
void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp);
|
3162 |
} CharDriver; |
3163 |
|
3164 |
static GSList *backends;
|
3165 |
|
3166 |
void register_char_driver(const char *name, CharDriverState *(*open)(QemuOpts *)) |
3167 |
{ |
3168 |
CharDriver *s; |
3169 |
|
3170 |
s = g_malloc0(sizeof(*s));
|
3171 |
s->name = g_strdup(name); |
3172 |
s->open = open; |
3173 |
|
3174 |
backends = g_slist_append(backends, s); |
3175 |
} |
3176 |
|
3177 |
void register_char_driver_qapi(const char *name, ChardevBackendKind kind, |
3178 |
void (*parse)(QemuOpts *opts, ChardevBackend *backend, Error **errp))
|
3179 |
{ |
3180 |
CharDriver *s; |
3181 |
|
3182 |
s = g_malloc0(sizeof(*s));
|
3183 |
s->name = g_strdup(name); |
3184 |
s->kind = kind; |
3185 |
s->parse = parse; |
3186 |
|
3187 |
backends = g_slist_append(backends, s); |
3188 |
} |
3189 |
|
3190 |
CharDriverState *qemu_chr_new_from_opts(QemuOpts *opts, |
3191 |
void (*init)(struct CharDriverState *s), |
3192 |
Error **errp) |
3193 |
{ |
3194 |
CharDriver *cd; |
3195 |
CharDriverState *chr; |
3196 |
GSList *i; |
3197 |
|
3198 |
if (qemu_opts_id(opts) == NULL) { |
3199 |
error_setg(errp, "chardev: no id specified");
|
3200 |
goto err;
|
3201 |
} |
3202 |
|
3203 |
if (qemu_opt_get(opts, "backend") == NULL) { |
3204 |
error_setg(errp, "chardev: \"%s\" missing backend",
|
3205 |
qemu_opts_id(opts)); |
3206 |
goto err;
|
3207 |
} |
3208 |
for (i = backends; i; i = i->next) {
|
3209 |
cd = i->data; |
3210 |
|
3211 |
if (strcmp(cd->name, qemu_opt_get(opts, "backend")) == 0) { |
3212 |
break;
|
3213 |
} |
3214 |
} |
3215 |
if (i == NULL) { |
3216 |
error_setg(errp, "chardev: backend \"%s\" not found",
|
3217 |
qemu_opt_get(opts, "backend"));
|
3218 |
goto err;
|
3219 |
} |
3220 |
|
3221 |
if (!cd->open) {
|
3222 |
/* using new, qapi init */
|
3223 |
ChardevBackend *backend = g_new0(ChardevBackend, 1);
|
3224 |
ChardevReturn *ret = NULL;
|
3225 |
const char *id = qemu_opts_id(opts); |
3226 |
char *bid = NULL; |
3227 |
|
3228 |
if (qemu_opt_get_bool(opts, "mux", 0)) { |
3229 |
bid = g_strdup_printf("%s-base", id);
|
3230 |
} |
3231 |
|
3232 |
chr = NULL;
|
3233 |
backend->kind = cd->kind; |
3234 |
if (cd->parse) {
|
3235 |
cd->parse(opts, backend, errp); |
3236 |
if (error_is_set(errp)) {
|
3237 |
goto qapi_out;
|
3238 |
} |
3239 |
} |
3240 |
ret = qmp_chardev_add(bid ? bid : id, backend, errp); |
3241 |
if (error_is_set(errp)) {
|
3242 |
goto qapi_out;
|
3243 |
} |
3244 |
|
3245 |
if (bid) {
|
3246 |
qapi_free_ChardevBackend(backend); |
3247 |
qapi_free_ChardevReturn(ret); |
3248 |
backend = g_new0(ChardevBackend, 1);
|
3249 |
backend->mux = g_new0(ChardevMux, 1);
|
3250 |
backend->kind = CHARDEV_BACKEND_KIND_MUX; |
3251 |
backend->mux->chardev = g_strdup(bid); |
3252 |
ret = qmp_chardev_add(id, backend, errp); |
3253 |
if (error_is_set(errp)) {
|
3254 |
chr = qemu_chr_find(bid); |
3255 |
qemu_chr_delete(chr); |
3256 |
chr = NULL;
|
3257 |
goto qapi_out;
|
3258 |
} |
3259 |
} |
3260 |
|
3261 |
chr = qemu_chr_find(id); |
3262 |
chr->opts = opts; |
3263 |
|
3264 |
qapi_out:
|
3265 |
qapi_free_ChardevBackend(backend); |
3266 |
qapi_free_ChardevReturn(ret); |
3267 |
g_free(bid); |
3268 |
return chr;
|
3269 |
} |
3270 |
|
3271 |
chr = cd->open(opts); |
3272 |
if (!chr) {
|
3273 |
error_setg(errp, "chardev: opening backend \"%s\" failed",
|
3274 |
qemu_opt_get(opts, "backend"));
|
3275 |
goto err;
|
3276 |
} |
3277 |
|
3278 |
if (!chr->filename)
|
3279 |
chr->filename = g_strdup(qemu_opt_get(opts, "backend"));
|
3280 |
chr->init = init; |
3281 |
/* if we didn't create the chardev via qmp_chardev_add, we
|
3282 |
* need to send the OPENED event here
|
3283 |
*/
|
3284 |
if (!chr->explicit_be_open) {
|
3285 |
qemu_chr_be_event(chr, CHR_EVENT_OPENED); |
3286 |
} |
3287 |
QTAILQ_INSERT_TAIL(&chardevs, chr, next); |
3288 |
|
3289 |
if (qemu_opt_get_bool(opts, "mux", 0)) { |
3290 |
CharDriverState *base = chr; |
3291 |
int len = strlen(qemu_opts_id(opts)) + 6; |
3292 |
base->label = g_malloc(len); |
3293 |
snprintf(base->label, len, "%s-base", qemu_opts_id(opts));
|
3294 |
chr = qemu_chr_open_mux(base); |
3295 |
chr->filename = base->filename; |
3296 |
chr->avail_connections = MAX_MUX; |
3297 |
QTAILQ_INSERT_TAIL(&chardevs, chr, next); |
3298 |
} else {
|
3299 |
chr->avail_connections = 1;
|
3300 |
} |
3301 |
chr->label = g_strdup(qemu_opts_id(opts)); |
3302 |
chr->opts = opts; |
3303 |
return chr;
|
3304 |
|
3305 |
err:
|
3306 |
qemu_opts_del(opts); |
3307 |
return NULL; |
3308 |
} |
3309 |
|
3310 |
CharDriverState *qemu_chr_new(const char *label, const char *filename, void (*init)(struct CharDriverState *s)) |
3311 |
{ |
3312 |
const char *p; |
3313 |
CharDriverState *chr; |
3314 |
QemuOpts *opts; |
3315 |
Error *err = NULL;
|
3316 |
|
3317 |
if (strstart(filename, "chardev:", &p)) { |
3318 |
return qemu_chr_find(p);
|
3319 |
} |
3320 |
|
3321 |
opts = qemu_chr_parse_compat(label, filename); |
3322 |
if (!opts)
|
3323 |
return NULL; |
3324 |
|
3325 |
chr = qemu_chr_new_from_opts(opts, init, &err); |
3326 |
if (err) {
|
3327 |
error_report("%s", error_get_pretty(err));
|
3328 |
error_free(err); |
3329 |
} |
3330 |
if (chr && qemu_opt_get_bool(opts, "mux", 0)) { |
3331 |
qemu_chr_fe_claim_no_fail(chr); |
3332 |
monitor_init(chr, MONITOR_USE_READLINE); |
3333 |
} |
3334 |
return chr;
|
3335 |
} |
3336 |
|
3337 |
void qemu_chr_fe_set_echo(struct CharDriverState *chr, bool echo) |
3338 |
{ |
3339 |
if (chr->chr_set_echo) {
|
3340 |
chr->chr_set_echo(chr, echo); |
3341 |
} |
3342 |
} |
3343 |
|
3344 |
void qemu_chr_fe_set_open(struct CharDriverState *chr, int fe_open) |
3345 |
{ |
3346 |
if (chr->fe_open == fe_open) {
|
3347 |
return;
|
3348 |
} |
3349 |
chr->fe_open = fe_open; |
3350 |
if (chr->chr_set_fe_open) {
|
3351 |
chr->chr_set_fe_open(chr, fe_open); |
3352 |
} |
3353 |
} |
3354 |
|
3355 |
void qemu_chr_fe_event(struct CharDriverState *chr, int event) |
3356 |
{ |
3357 |
if (chr->chr_fe_event) {
|
3358 |
chr->chr_fe_event(chr, event); |
3359 |
} |
3360 |
} |
3361 |
|
3362 |
int qemu_chr_fe_add_watch(CharDriverState *s, GIOCondition cond,
|
3363 |
GIOFunc func, void *user_data)
|
3364 |
{ |
3365 |
GSource *src; |
3366 |
guint tag; |
3367 |
|
3368 |
if (s->chr_add_watch == NULL) { |
3369 |
return -ENOSYS;
|
3370 |
} |
3371 |
|
3372 |
src = s->chr_add_watch(s, cond); |
3373 |
g_source_set_callback(src, (GSourceFunc)func, user_data, NULL);
|
3374 |
tag = g_source_attach(src, NULL);
|
3375 |
g_source_unref(src); |
3376 |
|
3377 |
return tag;
|
3378 |
} |
3379 |
|
3380 |
int qemu_chr_fe_claim(CharDriverState *s)
|
3381 |
{ |
3382 |
if (s->avail_connections < 1) { |
3383 |
return -1; |
3384 |
} |
3385 |
s->avail_connections--; |
3386 |
return 0; |
3387 |
} |
3388 |
|
3389 |
void qemu_chr_fe_claim_no_fail(CharDriverState *s)
|
3390 |
{ |
3391 |
if (qemu_chr_fe_claim(s) != 0) { |
3392 |
fprintf(stderr, "%s: error chardev \"%s\" already used\n",
|
3393 |
__func__, s->label); |
3394 |
exit(1);
|
3395 |
} |
3396 |
} |
3397 |
|
3398 |
void qemu_chr_fe_release(CharDriverState *s)
|
3399 |
{ |
3400 |
s->avail_connections++; |
3401 |
} |
3402 |
|
3403 |
void qemu_chr_delete(CharDriverState *chr)
|
3404 |
{ |
3405 |
QTAILQ_REMOVE(&chardevs, chr, next); |
3406 |
if (chr->chr_close) {
|
3407 |
chr->chr_close(chr); |
3408 |
} |
3409 |
g_free(chr->filename); |
3410 |
g_free(chr->label); |
3411 |
if (chr->opts) {
|
3412 |
qemu_opts_del(chr->opts); |
3413 |
} |
3414 |
g_free(chr); |
3415 |
} |
3416 |
|
3417 |
ChardevInfoList *qmp_query_chardev(Error **errp) |
3418 |
{ |
3419 |
ChardevInfoList *chr_list = NULL;
|
3420 |
CharDriverState *chr; |
3421 |
|
3422 |
QTAILQ_FOREACH(chr, &chardevs, next) { |
3423 |
ChardevInfoList *info = g_malloc0(sizeof(*info));
|
3424 |
info->value = g_malloc0(sizeof(*info->value));
|
3425 |
info->value->label = g_strdup(chr->label); |
3426 |
info->value->filename = g_strdup(chr->filename); |
3427 |
|
3428 |
info->next = chr_list; |
3429 |
chr_list = info; |
3430 |
} |
3431 |
|
3432 |
return chr_list;
|
3433 |
} |
3434 |
|
3435 |
ChardevBackendInfoList *qmp_query_chardev_backends(Error **errp) |
3436 |
{ |
3437 |
ChardevBackendInfoList *backend_list = NULL;
|
3438 |
CharDriver *c = NULL;
|
3439 |
GSList *i = NULL;
|
3440 |
|
3441 |
for (i = backends; i; i = i->next) {
|
3442 |
ChardevBackendInfoList *info = g_malloc0(sizeof(*info));
|
3443 |
c = i->data; |
3444 |
info->value = g_malloc0(sizeof(*info->value));
|
3445 |
info->value->name = g_strdup(c->name); |
3446 |
|
3447 |
info->next = backend_list; |
3448 |
backend_list = info; |
3449 |
} |
3450 |
|
3451 |
return backend_list;
|
3452 |
} |
3453 |
|
3454 |
CharDriverState *qemu_chr_find(const char *name) |
3455 |
{ |
3456 |
CharDriverState *chr; |
3457 |
|
3458 |
QTAILQ_FOREACH(chr, &chardevs, next) { |
3459 |
if (strcmp(chr->label, name) != 0) |
3460 |
continue;
|
3461 |
return chr;
|
3462 |
} |
3463 |
return NULL; |
3464 |
} |
3465 |
|
3466 |
/* Get a character (serial) device interface. */
|
3467 |
CharDriverState *qemu_char_get_next_serial(void)
|
3468 |
{ |
3469 |
static int next_serial; |
3470 |
CharDriverState *chr; |
3471 |
|
3472 |
/* FIXME: This function needs to go away: use chardev properties! */
|
3473 |
|
3474 |
while (next_serial < MAX_SERIAL_PORTS && serial_hds[next_serial]) {
|
3475 |
chr = serial_hds[next_serial++]; |
3476 |
qemu_chr_fe_claim_no_fail(chr); |
3477 |
return chr;
|
3478 |
} |
3479 |
return NULL; |
3480 |
} |
3481 |
|
3482 |
QemuOptsList qemu_chardev_opts = { |
3483 |
.name = "chardev",
|
3484 |
.implied_opt_name = "backend",
|
3485 |
.head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head), |
3486 |
.desc = { |
3487 |
{ |
3488 |
.name = "backend",
|
3489 |
.type = QEMU_OPT_STRING, |
3490 |
},{ |
3491 |
.name = "path",
|
3492 |
.type = QEMU_OPT_STRING, |
3493 |
},{ |
3494 |
.name = "host",
|
3495 |
.type = QEMU_OPT_STRING, |
3496 |
},{ |
3497 |
.name = "port",
|
3498 |
.type = QEMU_OPT_STRING, |
3499 |
},{ |
3500 |
.name = "localaddr",
|
3501 |
.type = QEMU_OPT_STRING, |
3502 |
},{ |
3503 |
.name = "localport",
|
3504 |
.type = QEMU_OPT_STRING, |
3505 |
},{ |
3506 |
.name = "to",
|
3507 |
.type = QEMU_OPT_NUMBER, |
3508 |
},{ |
3509 |
.name = "ipv4",
|
3510 |
.type = QEMU_OPT_BOOL, |
3511 |
},{ |
3512 |
.name = "ipv6",
|
3513 |
.type = QEMU_OPT_BOOL, |
3514 |
},{ |
3515 |
.name = "wait",
|
3516 |
.type = QEMU_OPT_BOOL, |
3517 |
},{ |
3518 |
.name = "server",
|
3519 |
.type = QEMU_OPT_BOOL, |
3520 |
},{ |
3521 |
.name = "delay",
|
3522 |
.type = QEMU_OPT_BOOL, |
3523 |
},{ |
3524 |
.name = "telnet",
|
3525 |
.type = QEMU_OPT_BOOL, |
3526 |
},{ |
3527 |
.name = "width",
|
3528 |
.type = QEMU_OPT_NUMBER, |
3529 |
},{ |
3530 |
.name = "height",
|
3531 |
.type = QEMU_OPT_NUMBER, |
3532 |
},{ |
3533 |
.name = "cols",
|
3534 |
.type = QEMU_OPT_NUMBER, |
3535 |
},{ |
3536 |
.name = "rows",
|
3537 |
.type = QEMU_OPT_NUMBER, |
3538 |
},{ |
3539 |
.name = "mux",
|
3540 |
.type = QEMU_OPT_BOOL, |
3541 |
},{ |
3542 |
.name = "signal",
|
3543 |
.type = QEMU_OPT_BOOL, |
3544 |
},{ |
3545 |
.name = "name",
|
3546 |
.type = QEMU_OPT_STRING, |
3547 |
},{ |
3548 |
.name = "debug",
|
3549 |
.type = QEMU_OPT_NUMBER, |
3550 |
},{ |
3551 |
.name = "size",
|
3552 |
.type = QEMU_OPT_SIZE, |
3553 |
},{ |
3554 |
.name = "chardev",
|
3555 |
.type = QEMU_OPT_STRING, |
3556 |
}, |
3557 |
{ /* end of list */ }
|
3558 |
}, |
3559 |
}; |
3560 |
|
3561 |
#ifdef _WIN32
|
3562 |
|
3563 |
static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
|
3564 |
{ |
3565 |
HANDLE out; |
3566 |
|
3567 |
if (file->has_in) {
|
3568 |
error_setg(errp, "input file not supported");
|
3569 |
return NULL; |
3570 |
} |
3571 |
|
3572 |
out = CreateFile(file->out, GENERIC_WRITE, FILE_SHARE_READ, NULL,
|
3573 |
OPEN_ALWAYS, FILE_ATTRIBUTE_NORMAL, NULL);
|
3574 |
if (out == INVALID_HANDLE_VALUE) {
|
3575 |
error_setg(errp, "open %s failed", file->out);
|
3576 |
return NULL; |
3577 |
} |
3578 |
return qemu_chr_open_win_file(out);
|
3579 |
} |
3580 |
|
3581 |
static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
|
3582 |
Error **errp) |
3583 |
{ |
3584 |
return qemu_chr_open_win_path(serial->device);
|
3585 |
} |
3586 |
|
3587 |
static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
|
3588 |
Error **errp) |
3589 |
{ |
3590 |
error_setg(errp, "character device backend type 'parallel' not supported");
|
3591 |
return NULL; |
3592 |
} |
3593 |
|
3594 |
#else /* WIN32 */ |
3595 |
|
3596 |
static int qmp_chardev_open_file_source(char *src, int flags, |
3597 |
Error **errp) |
3598 |
{ |
3599 |
int fd = -1; |
3600 |
|
3601 |
TFR(fd = qemu_open(src, flags, 0666));
|
3602 |
if (fd == -1) { |
3603 |
error_setg_file_open(errp, errno, src); |
3604 |
} |
3605 |
return fd;
|
3606 |
} |
3607 |
|
3608 |
static CharDriverState *qmp_chardev_open_file(ChardevFile *file, Error **errp)
|
3609 |
{ |
3610 |
int flags, in = -1, out = -1; |
3611 |
|
3612 |
flags = O_WRONLY | O_TRUNC | O_CREAT | O_BINARY; |
3613 |
out = qmp_chardev_open_file_source(file->out, flags, errp); |
3614 |
if (error_is_set(errp)) {
|
3615 |
return NULL; |
3616 |
} |
3617 |
|
3618 |
if (file->has_in) {
|
3619 |
flags = O_RDONLY; |
3620 |
in = qmp_chardev_open_file_source(file->in, flags, errp); |
3621 |
if (error_is_set(errp)) {
|
3622 |
qemu_close(out); |
3623 |
return NULL; |
3624 |
} |
3625 |
} |
3626 |
|
3627 |
return qemu_chr_open_fd(in, out);
|
3628 |
} |
3629 |
|
3630 |
static CharDriverState *qmp_chardev_open_serial(ChardevHostdev *serial,
|
3631 |
Error **errp) |
3632 |
{ |
3633 |
#ifdef HAVE_CHARDEV_TTY
|
3634 |
int fd;
|
3635 |
|
3636 |
fd = qmp_chardev_open_file_source(serial->device, O_RDWR, errp); |
3637 |
if (error_is_set(errp)) {
|
3638 |
return NULL; |
3639 |
} |
3640 |
qemu_set_nonblock(fd); |
3641 |
return qemu_chr_open_tty_fd(fd);
|
3642 |
#else
|
3643 |
error_setg(errp, "character device backend type 'serial' not supported");
|
3644 |
return NULL; |
3645 |
#endif
|
3646 |
} |
3647 |
|
3648 |
static CharDriverState *qmp_chardev_open_parallel(ChardevHostdev *parallel,
|
3649 |
Error **errp) |
3650 |
{ |
3651 |
#ifdef HAVE_CHARDEV_PARPORT
|
3652 |
int fd;
|
3653 |
|
3654 |
fd = qmp_chardev_open_file_source(parallel->device, O_RDWR, errp); |
3655 |
if (error_is_set(errp)) {
|
3656 |
return NULL; |
3657 |
} |
3658 |
return qemu_chr_open_pp_fd(fd);
|
3659 |
#else
|
3660 |
error_setg(errp, "character device backend type 'parallel' not supported");
|
3661 |
return NULL; |
3662 |
#endif
|
3663 |
} |
3664 |
|
3665 |
#endif /* WIN32 */ |
3666 |
|
3667 |
static CharDriverState *qmp_chardev_open_socket(ChardevSocket *sock,
|
3668 |
Error **errp) |
3669 |
{ |
3670 |
SocketAddress *addr = sock->addr; |
3671 |
bool do_nodelay = sock->has_nodelay ? sock->nodelay : false; |
3672 |
bool is_listen = sock->has_server ? sock->server : true; |
3673 |
bool is_telnet = sock->has_telnet ? sock->telnet : false; |
3674 |
bool is_waitconnect = sock->has_wait ? sock->wait : false; |
3675 |
int fd;
|
3676 |
|
3677 |
if (is_listen) {
|
3678 |
fd = socket_listen(addr, errp); |
3679 |
} else {
|
3680 |
fd = socket_connect(addr, errp, NULL, NULL); |
3681 |
} |
3682 |
if (error_is_set(errp)) {
|
3683 |
return NULL; |
3684 |
} |
3685 |
return qemu_chr_open_socket_fd(fd, do_nodelay, is_listen,
|
3686 |
is_telnet, is_waitconnect, errp); |
3687 |
} |
3688 |
|
3689 |
static CharDriverState *qmp_chardev_open_udp(ChardevUdp *udp,
|
3690 |
Error **errp) |
3691 |
{ |
3692 |
int fd;
|
3693 |
|
3694 |
fd = socket_dgram(udp->remote, udp->local, errp); |
3695 |
if (error_is_set(errp)) {
|
3696 |
return NULL; |
3697 |
} |
3698 |
return qemu_chr_open_udp_fd(fd);
|
3699 |
} |
3700 |
|
3701 |
ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend, |
3702 |
Error **errp) |
3703 |
{ |
3704 |
ChardevReturn *ret = g_new0(ChardevReturn, 1);
|
3705 |
CharDriverState *base, *chr = NULL;
|
3706 |
|
3707 |
chr = qemu_chr_find(id); |
3708 |
if (chr) {
|
3709 |
error_setg(errp, "Chardev '%s' already exists", id);
|
3710 |
g_free(ret); |
3711 |
return NULL; |
3712 |
} |
3713 |
|
3714 |
switch (backend->kind) {
|
3715 |
case CHARDEV_BACKEND_KIND_FILE:
|
3716 |
chr = qmp_chardev_open_file(backend->file, errp); |
3717 |
break;
|
3718 |
case CHARDEV_BACKEND_KIND_SERIAL:
|
3719 |
chr = qmp_chardev_open_serial(backend->serial, errp); |
3720 |
break;
|
3721 |
case CHARDEV_BACKEND_KIND_PARALLEL:
|
3722 |
chr = qmp_chardev_open_parallel(backend->parallel, errp); |
3723 |
break;
|
3724 |
case CHARDEV_BACKEND_KIND_PIPE:
|
3725 |
chr = qemu_chr_open_pipe(backend->pipe); |
3726 |
break;
|
3727 |
case CHARDEV_BACKEND_KIND_SOCKET:
|
3728 |
chr = qmp_chardev_open_socket(backend->socket, errp); |
3729 |
break;
|
3730 |
case CHARDEV_BACKEND_KIND_UDP:
|
3731 |
chr = qmp_chardev_open_udp(backend->udp, errp); |
3732 |
break;
|
3733 |
#ifdef HAVE_CHARDEV_TTY
|
3734 |
case CHARDEV_BACKEND_KIND_PTY:
|
3735 |
chr = qemu_chr_open_pty(id, ret); |
3736 |
break;
|
3737 |
#endif
|
3738 |
case CHARDEV_BACKEND_KIND_NULL:
|
3739 |
chr = qemu_chr_open_null(); |
3740 |
break;
|
3741 |
case CHARDEV_BACKEND_KIND_MUX:
|
3742 |
base = qemu_chr_find(backend->mux->chardev); |
3743 |
if (base == NULL) { |
3744 |
error_setg(errp, "mux: base chardev %s not found",
|
3745 |
backend->mux->chardev); |
3746 |
break;
|
3747 |
} |
3748 |
chr = qemu_chr_open_mux(base); |
3749 |
break;
|
3750 |
case CHARDEV_BACKEND_KIND_MSMOUSE:
|
3751 |
chr = qemu_chr_open_msmouse(); |
3752 |
break;
|
3753 |
#ifdef CONFIG_BRLAPI
|
3754 |
case CHARDEV_BACKEND_KIND_BRAILLE:
|
3755 |
chr = chr_baum_init(); |
3756 |
break;
|
3757 |
#endif
|
3758 |
case CHARDEV_BACKEND_KIND_STDIO:
|
3759 |
chr = qemu_chr_open_stdio(backend->stdio); |
3760 |
break;
|
3761 |
#ifdef _WIN32
|
3762 |
case CHARDEV_BACKEND_KIND_CONSOLE:
|
3763 |
chr = qemu_chr_open_win_con(); |
3764 |
break;
|
3765 |
#endif
|
3766 |
#ifdef CONFIG_SPICE
|
3767 |
case CHARDEV_BACKEND_KIND_SPICEVMC:
|
3768 |
chr = qemu_chr_open_spice_vmc(backend->spicevmc->type); |
3769 |
break;
|
3770 |
case CHARDEV_BACKEND_KIND_SPICEPORT:
|
3771 |
chr = qemu_chr_open_spice_port(backend->spiceport->fqdn); |
3772 |
break;
|
3773 |
#endif
|
3774 |
case CHARDEV_BACKEND_KIND_VC:
|
3775 |
chr = vc_init(backend->vc); |
3776 |
break;
|
3777 |
case CHARDEV_BACKEND_KIND_RINGBUF:
|
3778 |
case CHARDEV_BACKEND_KIND_MEMORY:
|
3779 |
chr = qemu_chr_open_ringbuf(backend->ringbuf, errp); |
3780 |
break;
|
3781 |
default:
|
3782 |
error_setg(errp, "unknown chardev backend (%d)", backend->kind);
|
3783 |
break;
|
3784 |
} |
3785 |
|
3786 |
if (chr == NULL && !error_is_set(errp)) { |
3787 |
error_setg(errp, "Failed to create chardev");
|
3788 |
} |
3789 |
if (chr) {
|
3790 |
chr->label = g_strdup(id); |
3791 |
chr->avail_connections = |
3792 |
(backend->kind == CHARDEV_BACKEND_KIND_MUX) ? MAX_MUX : 1;
|
3793 |
if (!chr->filename) {
|
3794 |
chr->filename = g_strdup(ChardevBackendKind_lookup[backend->kind]); |
3795 |
} |
3796 |
if (!chr->explicit_be_open) {
|
3797 |
qemu_chr_be_event(chr, CHR_EVENT_OPENED); |
3798 |
} |
3799 |
QTAILQ_INSERT_TAIL(&chardevs, chr, next); |
3800 |
return ret;
|
3801 |
} else {
|
3802 |
g_free(ret); |
3803 |
return NULL; |
3804 |
} |
3805 |
} |
3806 |
|
3807 |
void qmp_chardev_remove(const char *id, Error **errp) |
3808 |
{ |
3809 |
CharDriverState *chr; |
3810 |
|
3811 |
chr = qemu_chr_find(id); |
3812 |
if (NULL == chr) { |
3813 |
error_setg(errp, "Chardev '%s' not found", id);
|
3814 |
return;
|
3815 |
} |
3816 |
if (chr->chr_can_read || chr->chr_read ||
|
3817 |
chr->chr_event || chr->handler_opaque) { |
3818 |
error_setg(errp, "Chardev '%s' is busy", id);
|
3819 |
return;
|
3820 |
} |
3821 |
qemu_chr_delete(chr); |
3822 |
} |
3823 |
|
3824 |
static void register_types(void) |
3825 |
{ |
3826 |
register_char_driver_qapi("null", CHARDEV_BACKEND_KIND_NULL, NULL); |
3827 |
register_char_driver("socket", qemu_chr_open_socket);
|
3828 |
register_char_driver("udp", qemu_chr_open_udp);
|
3829 |
register_char_driver_qapi("ringbuf", CHARDEV_BACKEND_KIND_RINGBUF,
|
3830 |
qemu_chr_parse_ringbuf); |
3831 |
register_char_driver_qapi("file", CHARDEV_BACKEND_KIND_FILE,
|
3832 |
qemu_chr_parse_file_out); |
3833 |
register_char_driver_qapi("stdio", CHARDEV_BACKEND_KIND_STDIO,
|
3834 |
qemu_chr_parse_stdio); |
3835 |
register_char_driver_qapi("serial", CHARDEV_BACKEND_KIND_SERIAL,
|
3836 |
qemu_chr_parse_serial); |
3837 |
register_char_driver_qapi("tty", CHARDEV_BACKEND_KIND_SERIAL,
|
3838 |
qemu_chr_parse_serial); |
3839 |
register_char_driver_qapi("parallel", CHARDEV_BACKEND_KIND_PARALLEL,
|
3840 |
qemu_chr_parse_parallel); |
3841 |
register_char_driver_qapi("parport", CHARDEV_BACKEND_KIND_PARALLEL,
|
3842 |
qemu_chr_parse_parallel); |
3843 |
register_char_driver_qapi("pty", CHARDEV_BACKEND_KIND_PTY, NULL); |
3844 |
register_char_driver_qapi("console", CHARDEV_BACKEND_KIND_CONSOLE, NULL); |
3845 |
register_char_driver_qapi("pipe", CHARDEV_BACKEND_KIND_PIPE,
|
3846 |
qemu_chr_parse_pipe); |
3847 |
register_char_driver_qapi("mux", CHARDEV_BACKEND_KIND_MUX,
|
3848 |
qemu_chr_parse_mux); |
3849 |
/* Bug-compatibility: */
|
3850 |
register_char_driver_qapi("memory", CHARDEV_BACKEND_KIND_MEMORY,
|
3851 |
qemu_chr_parse_ringbuf); |
3852 |
/* this must be done after machine init, since we register FEs with muxes
|
3853 |
* as part of realize functions like serial_isa_realizefn when -nographic
|
3854 |
* is specified
|
3855 |
*/
|
3856 |
qemu_add_machine_init_done_notifier(&muxes_realize_notify); |
3857 |
} |
3858 |
|
3859 |
type_init(register_types); |