]>
Commit | Line | Data |
---|---|---|
6f97dba0 AL |
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 | */ | |
d38ea87a | 24 | #include "qemu/osdep.h" |
6f97dba0 | 25 | #include "qemu-common.h" |
f348b6d1 | 26 | #include "qemu/cutils.h" |
83c9089e | 27 | #include "monitor/monitor.h" |
9c17d615 | 28 | #include "sysemu/sysemu.h" |
213dcb06 | 29 | #include "qemu/config-file.h" |
d49b6836 | 30 | #include "qemu/error-report.h" |
dccfcd0e | 31 | #include "sysemu/char.h" |
c5a415a0 | 32 | #include "qmp-commands.h" |
cfb429cb | 33 | #include "qapi-visit.h" |
33577b47 | 34 | #include "sysemu/replay.h" |
517b3d40 | 35 | #include "qemu/help_option.h" |
6f97dba0 | 36 | |
df85a78b | 37 | #include "char-mux.h" |
a6da7ffa | 38 | #include "char-io.h" |
6aa0f0c9 | 39 | #include "char-parallel.h" |
2b2f23da | 40 | #include "char-serial.h" |
df85a78b | 41 | |
6f97dba0 AL |
42 | /***********************************************************/ |
43 | /* character device */ | |
44 | ||
0ec7b3e7 | 45 | static QTAILQ_HEAD(ChardevHead, Chardev) chardevs = |
72cf2d4f | 46 | QTAILQ_HEAD_INITIALIZER(chardevs); |
2970a6c9 | 47 | |
0ec7b3e7 | 48 | void qemu_chr_be_event(Chardev *s, int event) |
6f97dba0 | 49 | { |
a4afa548 MAL |
50 | CharBackend *be = s->be; |
51 | ||
73cdf3f2 AG |
52 | /* Keep track if the char device is open */ |
53 | switch (event) { | |
54 | case CHR_EVENT_OPENED: | |
16665b94 | 55 | s->be_open = 1; |
73cdf3f2 AG |
56 | break; |
57 | case CHR_EVENT_CLOSED: | |
16665b94 | 58 | s->be_open = 0; |
73cdf3f2 AG |
59 | break; |
60 | } | |
61 | ||
a4afa548 | 62 | if (!be || !be->chr_event) { |
6f97dba0 | 63 | return; |
a4afa548 MAL |
64 | } |
65 | ||
66 | be->chr_event(be->opaque, event); | |
6f97dba0 AL |
67 | } |
68 | ||
d0d7708b DB |
69 | /* Not reporting errors from writing to logfile, as logs are |
70 | * defined to be "best effort" only */ | |
0ec7b3e7 | 71 | static void qemu_chr_fe_write_log(Chardev *s, |
d0d7708b DB |
72 | const uint8_t *buf, size_t len) |
73 | { | |
74 | size_t done = 0; | |
75 | ssize_t ret; | |
76 | ||
77 | if (s->logfd < 0) { | |
78 | return; | |
79 | } | |
80 | ||
81 | while (done < len) { | |
53628efb DB |
82 | retry: |
83 | ret = write(s->logfd, buf + done, len - done); | |
84 | if (ret == -1 && errno == EAGAIN) { | |
85 | g_usleep(100); | |
86 | goto retry; | |
87 | } | |
d0d7708b DB |
88 | |
89 | if (ret <= 0) { | |
90 | return; | |
91 | } | |
92 | done += ret; | |
93 | } | |
94 | } | |
95 | ||
0ec7b3e7 MAL |
96 | static int qemu_chr_fe_write_buffer(Chardev *s, |
97 | const uint8_t *buf, int len, int *offset) | |
33577b47 | 98 | { |
777357d7 | 99 | ChardevClass *cc = CHARDEV_GET_CLASS(s); |
33577b47 PD |
100 | int res = 0; |
101 | *offset = 0; | |
102 | ||
103 | qemu_mutex_lock(&s->chr_write_lock); | |
104 | while (*offset < len) { | |
53628efb | 105 | retry: |
777357d7 | 106 | res = cc->chr_write(s, buf + *offset, len - *offset); |
53628efb DB |
107 | if (res < 0 && errno == EAGAIN) { |
108 | g_usleep(100); | |
109 | goto retry; | |
110 | } | |
33577b47 PD |
111 | |
112 | if (res <= 0) { | |
113 | break; | |
114 | } | |
115 | ||
116 | *offset += res; | |
117 | } | |
118 | if (*offset > 0) { | |
119 | qemu_chr_fe_write_log(s, buf, *offset); | |
120 | } | |
121 | qemu_mutex_unlock(&s->chr_write_lock); | |
122 | ||
123 | return res; | |
124 | } | |
125 | ||
0ec7b3e7 | 126 | static bool qemu_chr_replay(Chardev *chr) |
5ebd6703 MAL |
127 | { |
128 | return qemu_chr_has_feature(chr, QEMU_CHAR_FEATURE_REPLAY); | |
129 | } | |
130 | ||
5345fdb4 | 131 | int qemu_chr_fe_write(CharBackend *be, const uint8_t *buf, int len) |
6f97dba0 | 132 | { |
0ec7b3e7 | 133 | Chardev *s = be->chr; |
777357d7 | 134 | ChardevClass *cc; |
9005b2a7 PB |
135 | int ret; |
136 | ||
fa394ed6 MAL |
137 | if (!s) { |
138 | return 0; | |
139 | } | |
140 | ||
5ebd6703 | 141 | if (qemu_chr_replay(s) && replay_mode == REPLAY_MODE_PLAY) { |
33577b47 PD |
142 | int offset; |
143 | replay_char_write_event_load(&ret, &offset); | |
144 | assert(offset <= len); | |
145 | qemu_chr_fe_write_buffer(s, buf, offset, &offset); | |
146 | return ret; | |
147 | } | |
148 | ||
777357d7 | 149 | cc = CHARDEV_GET_CLASS(s); |
9005b2a7 | 150 | qemu_mutex_lock(&s->chr_write_lock); |
777357d7 | 151 | ret = cc->chr_write(s, buf, len); |
d0d7708b DB |
152 | |
153 | if (ret > 0) { | |
154 | qemu_chr_fe_write_log(s, buf, ret); | |
155 | } | |
156 | ||
9005b2a7 | 157 | qemu_mutex_unlock(&s->chr_write_lock); |
33577b47 | 158 | |
5ebd6703 | 159 | if (qemu_chr_replay(s) && replay_mode == REPLAY_MODE_RECORD) { |
33577b47 PD |
160 | replay_char_write_event_save(ret, ret < 0 ? 0 : ret); |
161 | } | |
162 | ||
9005b2a7 | 163 | return ret; |
6f97dba0 AL |
164 | } |
165 | ||
df85a78b | 166 | int qemu_chr_write_all(Chardev *s, const uint8_t *buf, int len) |
cd18720a | 167 | { |
33577b47 PD |
168 | int offset; |
169 | int res; | |
cd18720a | 170 | |
5ebd6703 | 171 | if (qemu_chr_replay(s) && replay_mode == REPLAY_MODE_PLAY) { |
33577b47 PD |
172 | replay_char_write_event_load(&res, &offset); |
173 | assert(offset <= len); | |
174 | qemu_chr_fe_write_buffer(s, buf, offset, &offset); | |
175 | return res; | |
176 | } | |
cd18720a | 177 | |
33577b47 | 178 | res = qemu_chr_fe_write_buffer(s, buf, len, &offset); |
cd18720a | 179 | |
5ebd6703 | 180 | if (qemu_chr_replay(s) && replay_mode == REPLAY_MODE_RECORD) { |
33577b47 | 181 | replay_char_write_event_save(res, offset); |
cd18720a AL |
182 | } |
183 | ||
9005b2a7 PB |
184 | if (res < 0) { |
185 | return res; | |
186 | } | |
cd18720a AL |
187 | return offset; |
188 | } | |
189 | ||
5345fdb4 | 190 | int qemu_chr_fe_write_all(CharBackend *be, const uint8_t *buf, int len) |
7b0bfdf5 | 191 | { |
0ec7b3e7 | 192 | Chardev *s = be->chr; |
5345fdb4 | 193 | |
fa394ed6 MAL |
194 | if (!s) { |
195 | return 0; | |
196 | } | |
197 | ||
5345fdb4 MAL |
198 | return qemu_chr_write_all(s, buf, len); |
199 | } | |
200 | ||
201 | int qemu_chr_fe_read_all(CharBackend *be, uint8_t *buf, int len) | |
202 | { | |
0ec7b3e7 | 203 | Chardev *s = be->chr; |
7b0bfdf5 NN |
204 | int offset = 0, counter = 10; |
205 | int res; | |
206 | ||
777357d7 | 207 | if (!s || !CHARDEV_GET_CLASS(s)->chr_sync_read) { |
7b0bfdf5 NN |
208 | return 0; |
209 | } | |
fa394ed6 | 210 | |
5ebd6703 | 211 | if (qemu_chr_replay(s) && replay_mode == REPLAY_MODE_PLAY) { |
33577b47 PD |
212 | return replay_char_read_all_load(buf); |
213 | } | |
7b0bfdf5 NN |
214 | |
215 | while (offset < len) { | |
53628efb | 216 | retry: |
777357d7 MAL |
217 | res = CHARDEV_GET_CLASS(s)->chr_sync_read(s, buf + offset, |
218 | len - offset); | |
53628efb DB |
219 | if (res == -1 && errno == EAGAIN) { |
220 | g_usleep(100); | |
221 | goto retry; | |
222 | } | |
7b0bfdf5 NN |
223 | |
224 | if (res == 0) { | |
225 | break; | |
226 | } | |
227 | ||
228 | if (res < 0) { | |
5ebd6703 | 229 | if (qemu_chr_replay(s) && replay_mode == REPLAY_MODE_RECORD) { |
33577b47 PD |
230 | replay_char_read_all_save_error(res); |
231 | } | |
7b0bfdf5 NN |
232 | return res; |
233 | } | |
234 | ||
235 | offset += res; | |
236 | ||
237 | if (!counter--) { | |
238 | break; | |
239 | } | |
240 | } | |
241 | ||
5ebd6703 | 242 | if (qemu_chr_replay(s) && replay_mode == REPLAY_MODE_RECORD) { |
33577b47 PD |
243 | replay_char_read_all_save_buf(buf, offset); |
244 | } | |
7b0bfdf5 NN |
245 | return offset; |
246 | } | |
247 | ||
5345fdb4 | 248 | int qemu_chr_fe_ioctl(CharBackend *be, int cmd, void *arg) |
6f97dba0 | 249 | { |
0ec7b3e7 | 250 | Chardev *s = be->chr; |
33577b47 | 251 | int res; |
fa394ed6 | 252 | |
777357d7 | 253 | if (!s || !CHARDEV_GET_CLASS(s)->chr_ioctl || qemu_chr_replay(s)) { |
33577b47 PD |
254 | res = -ENOTSUP; |
255 | } else { | |
777357d7 | 256 | res = CHARDEV_GET_CLASS(s)->chr_ioctl(s, cmd, arg); |
33577b47 PD |
257 | } |
258 | ||
259 | return res; | |
6f97dba0 AL |
260 | } |
261 | ||
0ec7b3e7 | 262 | int qemu_chr_be_can_write(Chardev *s) |
6f97dba0 | 263 | { |
a4afa548 MAL |
264 | CharBackend *be = s->be; |
265 | ||
266 | if (!be || !be->chr_can_read) { | |
6f97dba0 | 267 | return 0; |
a4afa548 MAL |
268 | } |
269 | ||
270 | return be->chr_can_read(be->opaque); | |
6f97dba0 AL |
271 | } |
272 | ||
0ec7b3e7 | 273 | void qemu_chr_be_write_impl(Chardev *s, uint8_t *buf, int len) |
6f97dba0 | 274 | { |
a4afa548 MAL |
275 | CharBackend *be = s->be; |
276 | ||
277 | if (be && be->chr_read) { | |
278 | be->chr_read(be->opaque, buf, len); | |
ac310734 | 279 | } |
6f97dba0 AL |
280 | } |
281 | ||
0ec7b3e7 | 282 | void qemu_chr_be_write(Chardev *s, uint8_t *buf, int len) |
33577b47 | 283 | { |
5ebd6703 | 284 | if (qemu_chr_replay(s)) { |
33577b47 PD |
285 | if (replay_mode == REPLAY_MODE_PLAY) { |
286 | return; | |
287 | } | |
288 | replay_chr_be_write(s, buf, len); | |
289 | } else { | |
290 | qemu_chr_be_write_impl(s, buf, len); | |
291 | } | |
292 | } | |
293 | ||
5345fdb4 | 294 | int qemu_chr_fe_get_msgfd(CharBackend *be) |
7d174059 | 295 | { |
0ec7b3e7 | 296 | Chardev *s = be->chr; |
c76bf6bb | 297 | int fd; |
5345fdb4 | 298 | int res = (qemu_chr_fe_get_msgfds(be, &fd, 1) == 1) ? fd : -1; |
5ebd6703 | 299 | if (s && qemu_chr_replay(s)) { |
776a32a0 MAL |
300 | error_report("Replay: get msgfd is not supported " |
301 | "for serial devices yet"); | |
33577b47 PD |
302 | exit(1); |
303 | } | |
304 | return res; | |
c76bf6bb NN |
305 | } |
306 | ||
5345fdb4 | 307 | int qemu_chr_fe_get_msgfds(CharBackend *be, int *fds, int len) |
c76bf6bb | 308 | { |
0ec7b3e7 | 309 | Chardev *s = be->chr; |
5345fdb4 | 310 | |
fa394ed6 MAL |
311 | if (!s) { |
312 | return -1; | |
313 | } | |
314 | ||
777357d7 MAL |
315 | return CHARDEV_GET_CLASS(s)->get_msgfds ? |
316 | CHARDEV_GET_CLASS(s)->get_msgfds(s, fds, len) : -1; | |
7d174059 MM |
317 | } |
318 | ||
5345fdb4 | 319 | int qemu_chr_fe_set_msgfds(CharBackend *be, int *fds, int num) |
d39aac7a | 320 | { |
0ec7b3e7 | 321 | Chardev *s = be->chr; |
5345fdb4 | 322 | |
fa394ed6 MAL |
323 | if (!s) { |
324 | return -1; | |
325 | } | |
326 | ||
777357d7 MAL |
327 | return CHARDEV_GET_CLASS(s)->set_msgfds ? |
328 | CHARDEV_GET_CLASS(s)->set_msgfds(s, fds, num) : -1; | |
d39aac7a NN |
329 | } |
330 | ||
0ec7b3e7 | 331 | int qemu_chr_add_client(Chardev *s, int fd) |
13661089 | 332 | { |
777357d7 MAL |
333 | return CHARDEV_GET_CLASS(s)->chr_add_client ? |
334 | CHARDEV_GET_CLASS(s)->chr_add_client(s, fd) : -1; | |
13661089 DB |
335 | } |
336 | ||
5345fdb4 | 337 | void qemu_chr_fe_accept_input(CharBackend *be) |
6f97dba0 | 338 | { |
0ec7b3e7 | 339 | Chardev *s = be->chr; |
5345fdb4 | 340 | |
fa394ed6 MAL |
341 | if (!s) { |
342 | return; | |
343 | } | |
344 | ||
777357d7 MAL |
345 | if (CHARDEV_GET_CLASS(s)->chr_accept_input) { |
346 | CHARDEV_GET_CLASS(s)->chr_accept_input(s); | |
b68e956a | 347 | } |
98c8ee1d | 348 | qemu_notify_event(); |
6f97dba0 AL |
349 | } |
350 | ||
5345fdb4 | 351 | void qemu_chr_fe_printf(CharBackend *be, const char *fmt, ...) |
6f97dba0 | 352 | { |
f612143a | 353 | char buf[CHR_READ_BUF_LEN]; |
6f97dba0 AL |
354 | va_list ap; |
355 | va_start(ap, fmt); | |
356 | vsnprintf(buf, sizeof(buf), fmt, ap); | |
90f998f5 DB |
357 | /* XXX this blocks entire thread. Rewrite to use |
358 | * qemu_chr_fe_write and background I/O callbacks */ | |
5345fdb4 | 359 | qemu_chr_fe_write_all(be, (uint8_t *)buf, strlen(buf)); |
6f97dba0 AL |
360 | va_end(ap); |
361 | } | |
362 | ||
777357d7 MAL |
363 | static void qemu_char_open(Chardev *chr, ChardevBackend *backend, |
364 | bool *be_opened, Error **errp) | |
6f97dba0 | 365 | { |
777357d7 MAL |
366 | ChardevClass *cc = CHARDEV_GET_CLASS(chr); |
367 | /* Any ChardevCommon member would work */ | |
368 | ChardevCommon *common = backend ? backend->u.null.data : NULL; | |
369 | ||
370 | if (common && common->has_logfile) { | |
371 | int flags = O_WRONLY | O_CREAT; | |
372 | if (common->has_logappend && | |
373 | common->logappend) { | |
374 | flags |= O_APPEND; | |
375 | } else { | |
376 | flags |= O_TRUNC; | |
377 | } | |
378 | chr->logfd = qemu_open(common->logfile, flags, 0666); | |
379 | if (chr->logfd < 0) { | |
380 | error_setg_errno(errp, errno, | |
381 | "Unable to open logfile %s", | |
382 | common->logfile); | |
383 | return; | |
384 | } | |
385 | } | |
386 | ||
387 | if (cc->open) { | |
388 | cc->open(chr, backend, be_opened, errp); | |
389 | } | |
6f97dba0 AL |
390 | } |
391 | ||
777357d7 | 392 | static void char_init(Object *obj) |
6f97dba0 | 393 | { |
777357d7 | 394 | Chardev *chr = CHARDEV(obj); |
6f97dba0 | 395 | |
777357d7 MAL |
396 | chr->logfd = -1; |
397 | qemu_mutex_init(&chr->chr_write_lock); | |
398 | } | |
399 | ||
eb314a94 MAL |
400 | static int null_chr_write(Chardev *chr, const uint8_t *buf, int len) |
401 | { | |
402 | return len; | |
403 | } | |
404 | ||
405 | static void char_class_init(ObjectClass *oc, void *data) | |
406 | { | |
407 | ChardevClass *cc = CHARDEV_CLASS(oc); | |
408 | ||
409 | cc->chr_write = null_chr_write; | |
410 | } | |
411 | ||
777357d7 MAL |
412 | static void char_finalize(Object *obj) |
413 | { | |
414 | Chardev *chr = CHARDEV(obj); | |
415 | ||
416 | if (chr->be) { | |
417 | chr->be->chr = NULL; | |
418 | } | |
419 | g_free(chr->filename); | |
420 | g_free(chr->label); | |
421 | if (chr->logfd != -1) { | |
422 | close(chr->logfd); | |
d0d7708b | 423 | } |
777357d7 MAL |
424 | qemu_mutex_destroy(&chr->chr_write_lock); |
425 | } | |
426 | ||
427 | static const TypeInfo char_type_info = { | |
428 | .name = TYPE_CHARDEV, | |
429 | .parent = TYPE_OBJECT, | |
430 | .instance_size = sizeof(Chardev), | |
431 | .instance_init = char_init, | |
432 | .instance_finalize = char_finalize, | |
433 | .abstract = true, | |
434 | .class_size = sizeof(ChardevClass), | |
eb314a94 | 435 | .class_init = char_class_init, |
777357d7 MAL |
436 | }; |
437 | ||
7b7ab18d MR |
438 | /** |
439 | * Called after processing of default and command-line-specified | |
440 | * chardevs to deliver CHR_EVENT_OPENED events to any FEs attached | |
441 | * to a mux chardev. This is done here to ensure that | |
442 | * output/prompts/banners are only displayed for the FE that has | |
443 | * focus when initial command-line processing/machine init is | |
444 | * completed. | |
445 | * | |
446 | * After this point, any new FE attached to any new or existing | |
447 | * mux will receive CHR_EVENT_OPENED notifications for the BE | |
448 | * immediately. | |
449 | */ | |
450 | static void muxes_realize_done(Notifier *notifier, void *unused) | |
451 | { | |
0ec7b3e7 | 452 | Chardev *chr; |
7b7ab18d | 453 | |
bed3bb9b | 454 | muxes_realized = true; |
7b7ab18d | 455 | QTAILQ_FOREACH(chr, &chardevs, next) { |
777357d7 | 456 | if (CHARDEV_IS_MUX(chr)) { |
7b7ab18d | 457 | /* send OPENED to all already-attached FEs */ |
bed3bb9b | 458 | mux_chr_send_all_event(CHARDEV(chr), CHR_EVENT_OPENED); |
7b7ab18d MR |
459 | /* mark mux as OPENED so any new FEs will immediately receive |
460 | * OPENED event | |
461 | */ | |
63618135 | 462 | qemu_chr_be_event(chr, CHR_EVENT_OPENED); |
7b7ab18d MR |
463 | } |
464 | } | |
7b7ab18d MR |
465 | } |
466 | ||
467 | static Notifier muxes_realize_notify = { | |
468 | .notify = muxes_realize_done, | |
469 | }; | |
470 | ||
0ec7b3e7 | 471 | Chardev *qemu_chr_fe_get_driver(CharBackend *be) |
94a40fc5 MAL |
472 | { |
473 | return be->chr; | |
474 | } | |
475 | ||
0ec7b3e7 | 476 | bool qemu_chr_fe_init(CharBackend *b, Chardev *s, Error **errp) |
94a40fc5 MAL |
477 | { |
478 | int tag = 0; | |
479 | ||
777357d7 MAL |
480 | if (CHARDEV_IS_MUX(s)) { |
481 | MuxChardev *d = MUX_CHARDEV(s); | |
3aef23d7 MAL |
482 | |
483 | if (d->mux_cnt >= MAX_MUX) { | |
484 | goto unavailable; | |
94a40fc5 | 485 | } |
3aef23d7 MAL |
486 | |
487 | d->backends[d->mux_cnt] = b; | |
488 | tag = d->mux_cnt++; | |
489 | } else if (s->be) { | |
490 | goto unavailable; | |
a4afa548 MAL |
491 | } else { |
492 | s->be = b; | |
94a40fc5 MAL |
493 | } |
494 | ||
830896af | 495 | b->fe_open = false; |
94a40fc5 MAL |
496 | b->tag = tag; |
497 | b->chr = s; | |
94a40fc5 | 498 | return true; |
3aef23d7 MAL |
499 | |
500 | unavailable: | |
501 | error_setg(errp, QERR_DEVICE_IN_USE, s->label); | |
502 | return false; | |
94a40fc5 MAL |
503 | } |
504 | ||
0ec7b3e7 | 505 | static bool qemu_chr_is_busy(Chardev *s) |
a4afa548 | 506 | { |
777357d7 MAL |
507 | if (CHARDEV_IS_MUX(s)) { |
508 | MuxChardev *d = MUX_CHARDEV(s); | |
a4afa548 MAL |
509 | return d->mux_cnt >= 0; |
510 | } else { | |
511 | return s->be != NULL; | |
512 | } | |
513 | } | |
514 | ||
c39860e6 MAL |
515 | void qemu_chr_fe_deinit(CharBackend *b) |
516 | { | |
517 | assert(b); | |
518 | ||
519 | if (b->chr) { | |
39ab61c6 | 520 | qemu_chr_fe_set_handlers(b, NULL, NULL, NULL, NULL, NULL, true); |
fb5e19d2 MAL |
521 | if (b->chr->be == b) { |
522 | b->chr->be = NULL; | |
523 | } | |
777357d7 MAL |
524 | if (CHARDEV_IS_MUX(b->chr)) { |
525 | MuxChardev *d = MUX_CHARDEV(b->chr); | |
a4afa548 MAL |
526 | d->backends[b->tag] = NULL; |
527 | } | |
c39860e6 MAL |
528 | b->chr = NULL; |
529 | } | |
530 | } | |
531 | ||
94a40fc5 MAL |
532 | void qemu_chr_fe_set_handlers(CharBackend *b, |
533 | IOCanReadHandler *fd_can_read, | |
534 | IOReadHandler *fd_read, | |
535 | IOEventHandler *fd_event, | |
536 | void *opaque, | |
39ab61c6 MAL |
537 | GMainContext *context, |
538 | bool set_open) | |
94a40fc5 | 539 | { |
0ec7b3e7 | 540 | Chardev *s; |
777357d7 | 541 | ChardevClass *cc; |
386f07d1 MAL |
542 | int fe_open; |
543 | ||
544 | s = b->chr; | |
545 | if (!s) { | |
94a40fc5 MAL |
546 | return; |
547 | } | |
548 | ||
777357d7 | 549 | cc = CHARDEV_GET_CLASS(s); |
386f07d1 MAL |
550 | if (!opaque && !fd_can_read && !fd_read && !fd_event) { |
551 | fe_open = 0; | |
8487ce45 | 552 | remove_fd_in_watch(s, context); |
386f07d1 MAL |
553 | } else { |
554 | fe_open = 1; | |
555 | } | |
a4afa548 MAL |
556 | b->chr_can_read = fd_can_read; |
557 | b->chr_read = fd_read; | |
558 | b->chr_event = fd_event; | |
559 | b->opaque = opaque; | |
777357d7 MAL |
560 | if (cc->chr_update_read_handler) { |
561 | cc->chr_update_read_handler(s, context); | |
386f07d1 MAL |
562 | } |
563 | ||
39ab61c6 | 564 | if (set_open) { |
386f07d1 MAL |
565 | qemu_chr_fe_set_open(b, fe_open); |
566 | } | |
94a40fc5 | 567 | |
386f07d1 MAL |
568 | if (fe_open) { |
569 | qemu_chr_fe_take_focus(b); | |
570 | /* We're connecting to an already opened device, so let's make sure we | |
571 | also get the open event */ | |
572 | if (s->be_open) { | |
63618135 | 573 | qemu_chr_be_event(s, CHR_EVENT_OPENED); |
386f07d1 MAL |
574 | } |
575 | } | |
576 | ||
777357d7 | 577 | if (CHARDEV_IS_MUX(s)) { |
386f07d1 | 578 | mux_chr_set_handlers(s, context); |
94a40fc5 MAL |
579 | } |
580 | } | |
581 | ||
582 | void qemu_chr_fe_take_focus(CharBackend *b) | |
583 | { | |
fa394ed6 MAL |
584 | if (!b->chr) { |
585 | return; | |
586 | } | |
587 | ||
777357d7 | 588 | if (CHARDEV_IS_MUX(b->chr)) { |
fb5e19d2 | 589 | mux_set_focus(b->chr, b->tag); |
94a40fc5 MAL |
590 | } |
591 | } | |
6f97dba0 | 592 | |
d24ca4b8 | 593 | int qemu_chr_wait_connected(Chardev *chr, Error **errp) |
6b6723c3 | 594 | { |
777357d7 MAL |
595 | ChardevClass *cc = CHARDEV_GET_CLASS(chr); |
596 | ||
597 | if (cc->chr_wait_connected) { | |
598 | return cc->chr_wait_connected(chr, errp); | |
6b6723c3 MAL |
599 | } |
600 | ||
601 | return 0; | |
602 | } | |
603 | ||
5345fdb4 MAL |
604 | int qemu_chr_fe_wait_connected(CharBackend *be, Error **errp) |
605 | { | |
fa394ed6 MAL |
606 | if (!be->chr) { |
607 | error_setg(errp, "missing associated backend"); | |
608 | return -1; | |
609 | } | |
610 | ||
5345fdb4 MAL |
611 | return qemu_chr_wait_connected(be->chr, errp); |
612 | } | |
613 | ||
33521634 | 614 | QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename) |
191bc01b | 615 | { |
6ea314d9 | 616 | char host[65], port[33], width[8], height[8]; |
aeb2c47a | 617 | int pos; |
7d31544f | 618 | const char *p; |
191bc01b | 619 | QemuOpts *opts; |
8be7e7e4 | 620 | Error *local_err = NULL; |
191bc01b | 621 | |
8be7e7e4 | 622 | opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err); |
84d18f06 | 623 | if (local_err) { |
33394884 | 624 | error_report_err(local_err); |
191bc01b | 625 | return NULL; |
8be7e7e4 | 626 | } |
191bc01b | 627 | |
7591c5c1 GH |
628 | if (strstart(filename, "mon:", &p)) { |
629 | filename = p; | |
f43e47db | 630 | qemu_opt_set(opts, "mux", "on", &error_abort); |
02c4bdf1 PB |
631 | if (strcmp(filename, "stdio") == 0) { |
632 | /* Monitor is muxed to stdio: do not exit on Ctrl+C by default | |
633 | * but pass it to the guest. Handle this only for compat syntax, | |
634 | * for -chardev syntax we have special option for this. | |
635 | * This is what -nographic did, redirecting+muxing serial+monitor | |
636 | * to stdio causing Ctrl+C to be passed to guest. */ | |
f43e47db | 637 | qemu_opt_set(opts, "signal", "off", &error_abort); |
02c4bdf1 | 638 | } |
7591c5c1 GH |
639 | } |
640 | ||
f0457e8d GH |
641 | if (strcmp(filename, "null") == 0 || |
642 | strcmp(filename, "pty") == 0 || | |
643 | strcmp(filename, "msmouse") == 0 || | |
378af961 | 644 | strcmp(filename, "wctablet") == 0 || |
dc1c21e6 | 645 | strcmp(filename, "braille") == 0 || |
5692399f | 646 | strcmp(filename, "testdev") == 0 || |
f0457e8d | 647 | strcmp(filename, "stdio") == 0) { |
f43e47db | 648 | qemu_opt_set(opts, "backend", filename, &error_abort); |
191bc01b GH |
649 | return opts; |
650 | } | |
6ea314d9 | 651 | if (strstart(filename, "vc", &p)) { |
f43e47db | 652 | qemu_opt_set(opts, "backend", "vc", &error_abort); |
6ea314d9 | 653 | if (*p == ':') { |
49aa4058 | 654 | if (sscanf(p+1, "%7[0-9]x%7[0-9]", width, height) == 2) { |
6ea314d9 | 655 | /* pixels */ |
f43e47db MA |
656 | qemu_opt_set(opts, "width", width, &error_abort); |
657 | qemu_opt_set(opts, "height", height, &error_abort); | |
49aa4058 | 658 | } else if (sscanf(p+1, "%7[0-9]Cx%7[0-9]C", width, height) == 2) { |
6ea314d9 | 659 | /* chars */ |
f43e47db MA |
660 | qemu_opt_set(opts, "cols", width, &error_abort); |
661 | qemu_opt_set(opts, "rows", height, &error_abort); | |
6ea314d9 GH |
662 | } else { |
663 | goto fail; | |
664 | } | |
665 | } | |
666 | return opts; | |
667 | } | |
d6c983cd | 668 | if (strcmp(filename, "con:") == 0) { |
f43e47db | 669 | qemu_opt_set(opts, "backend", "console", &error_abort); |
d6c983cd GH |
670 | return opts; |
671 | } | |
48b76496 | 672 | if (strstart(filename, "COM", NULL)) { |
f43e47db MA |
673 | qemu_opt_set(opts, "backend", "serial", &error_abort); |
674 | qemu_opt_set(opts, "path", filename, &error_abort); | |
48b76496 GH |
675 | return opts; |
676 | } | |
7d31544f | 677 | if (strstart(filename, "file:", &p)) { |
f43e47db MA |
678 | qemu_opt_set(opts, "backend", "file", &error_abort); |
679 | qemu_opt_set(opts, "path", p, &error_abort); | |
7d31544f GH |
680 | return opts; |
681 | } | |
682 | if (strstart(filename, "pipe:", &p)) { | |
f43e47db MA |
683 | qemu_opt_set(opts, "backend", "pipe", &error_abort); |
684 | qemu_opt_set(opts, "path", p, &error_abort); | |
7d31544f GH |
685 | return opts; |
686 | } | |
aeb2c47a GH |
687 | if (strstart(filename, "tcp:", &p) || |
688 | strstart(filename, "telnet:", &p)) { | |
689 | if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) { | |
690 | host[0] = 0; | |
691 | if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) | |
692 | goto fail; | |
693 | } | |
f43e47db MA |
694 | qemu_opt_set(opts, "backend", "socket", &error_abort); |
695 | qemu_opt_set(opts, "host", host, &error_abort); | |
696 | qemu_opt_set(opts, "port", port, &error_abort); | |
aeb2c47a | 697 | if (p[pos] == ',') { |
dc523cd3 MA |
698 | qemu_opts_do_parse(opts, p+pos+1, NULL, &local_err); |
699 | if (local_err) { | |
700 | error_report_err(local_err); | |
aeb2c47a | 701 | goto fail; |
dc523cd3 | 702 | } |
aeb2c47a GH |
703 | } |
704 | if (strstart(filename, "telnet:", &p)) | |
f43e47db | 705 | qemu_opt_set(opts, "telnet", "on", &error_abort); |
aeb2c47a GH |
706 | return opts; |
707 | } | |
7e1b35b4 | 708 | if (strstart(filename, "udp:", &p)) { |
f43e47db | 709 | qemu_opt_set(opts, "backend", "udp", &error_abort); |
7e1b35b4 GH |
710 | if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) { |
711 | host[0] = 0; | |
39324ca4 | 712 | if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) { |
7e1b35b4 GH |
713 | goto fail; |
714 | } | |
715 | } | |
f43e47db MA |
716 | qemu_opt_set(opts, "host", host, &error_abort); |
717 | qemu_opt_set(opts, "port", port, &error_abort); | |
7e1b35b4 GH |
718 | if (p[pos] == '@') { |
719 | p += pos + 1; | |
720 | if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) { | |
721 | host[0] = 0; | |
722 | if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) { | |
7e1b35b4 GH |
723 | goto fail; |
724 | } | |
725 | } | |
f43e47db MA |
726 | qemu_opt_set(opts, "localaddr", host, &error_abort); |
727 | qemu_opt_set(opts, "localport", port, &error_abort); | |
7e1b35b4 GH |
728 | } |
729 | return opts; | |
730 | } | |
aeb2c47a | 731 | if (strstart(filename, "unix:", &p)) { |
f43e47db | 732 | qemu_opt_set(opts, "backend", "socket", &error_abort); |
dc523cd3 MA |
733 | qemu_opts_do_parse(opts, p, "path", &local_err); |
734 | if (local_err) { | |
735 | error_report_err(local_err); | |
aeb2c47a | 736 | goto fail; |
dc523cd3 | 737 | } |
aeb2c47a GH |
738 | return opts; |
739 | } | |
48b76496 GH |
740 | if (strstart(filename, "/dev/parport", NULL) || |
741 | strstart(filename, "/dev/ppi", NULL)) { | |
f43e47db MA |
742 | qemu_opt_set(opts, "backend", "parport", &error_abort); |
743 | qemu_opt_set(opts, "path", filename, &error_abort); | |
48b76496 GH |
744 | return opts; |
745 | } | |
746 | if (strstart(filename, "/dev/", NULL)) { | |
f43e47db MA |
747 | qemu_opt_set(opts, "backend", "tty", &error_abort); |
748 | qemu_opt_set(opts, "path", filename, &error_abort); | |
48b76496 GH |
749 | return opts; |
750 | } | |
191bc01b | 751 | |
aeb2c47a | 752 | fail: |
191bc01b GH |
753 | qemu_opts_del(opts); |
754 | return NULL; | |
755 | } | |
756 | ||
21a933ea | 757 | void qemu_chr_parse_common(QemuOpts *opts, ChardevCommon *backend) |
d0d7708b DB |
758 | { |
759 | const char *logfile = qemu_opt_get(opts, "logfile"); | |
760 | ||
761 | backend->has_logfile = logfile != NULL; | |
762 | backend->logfile = logfile ? g_strdup(logfile) : NULL; | |
763 | ||
764 | backend->has_logappend = true; | |
765 | backend->logappend = qemu_opt_get_bool(opts, "logappend", false); | |
766 | } | |
767 | ||
88cace9f MAL |
768 | static const ChardevClass *char_get_class(const char *driver, Error **errp) |
769 | { | |
770 | ObjectClass *oc; | |
771 | const ChardevClass *cc; | |
772 | char *typename = g_strdup_printf("chardev-%s", driver); | |
773 | ||
774 | oc = object_class_by_name(typename); | |
775 | g_free(typename); | |
776 | ||
777 | if (!object_class_dynamic_cast(oc, TYPE_CHARDEV)) { | |
778 | error_setg(errp, "'%s' is not a valid char driver name", driver); | |
779 | return NULL; | |
780 | } | |
d654f34e | 781 | |
88cace9f MAL |
782 | if (object_class_is_abstract(oc)) { |
783 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "driver", | |
784 | "abstract device type"); | |
785 | return NULL; | |
786 | } | |
787 | ||
788 | cc = CHARDEV_CLASS(oc); | |
789 | if (cc->internal) { | |
790 | error_setg(errp, "'%s' is not a valid char driver name", driver); | |
791 | return NULL; | |
792 | } | |
793 | ||
794 | return cc; | |
795 | } | |
796 | ||
0b663b7d MAL |
797 | static Chardev *qemu_chardev_add(const char *id, const char *typename, |
798 | ChardevBackend *backend, Error **errp) | |
799 | { | |
800 | Chardev *chr; | |
801 | ||
802 | chr = qemu_chr_find(id); | |
803 | if (chr) { | |
804 | error_setg(errp, "Chardev '%s' already exists", id); | |
805 | return NULL; | |
806 | } | |
807 | ||
808 | chr = qemu_chardev_new(id, typename, backend, errp); | |
809 | if (!chr) { | |
810 | return NULL; | |
811 | } | |
812 | ||
813 | QTAILQ_INSERT_TAIL(&chardevs, chr, next); | |
814 | return chr; | |
815 | } | |
816 | ||
88cace9f MAL |
817 | static const struct ChardevAlias { |
818 | const char *typename; | |
819 | const char *alias; | |
820 | } chardev_alias_table[] = { | |
821 | #ifdef HAVE_CHARDEV_PARPORT | |
822 | { "parallel", "parport" }, | |
823 | #endif | |
824 | #ifdef HAVE_CHARDEV_SERIAL | |
825 | { "serial", "tty" }, | |
826 | #endif | |
827 | }; | |
828 | ||
829 | typedef struct ChadevClassFE { | |
830 | void (*fn)(const char *name, void *opaque); | |
831 | void *opaque; | |
832 | } ChadevClassFE; | |
833 | ||
834 | static void | |
835 | chardev_class_foreach(ObjectClass *klass, void *opaque) | |
2c5f4882 | 836 | { |
88cace9f MAL |
837 | ChadevClassFE *fe = opaque; |
838 | ||
839 | assert(g_str_has_prefix(object_class_get_name(klass), "chardev-")); | |
840 | if (CHARDEV_CLASS(klass)->internal) { | |
841 | return; | |
842 | } | |
843 | ||
844 | fe->fn(object_class_get_name(klass) + 8, fe->opaque); | |
845 | } | |
846 | ||
847 | static void | |
848 | chardev_name_foreach(void (*fn)(const char *name, void *opaque), void *opaque) | |
849 | { | |
850 | ChadevClassFE fe = { .fn = fn, .opaque = opaque }; | |
851 | int i; | |
852 | ||
853 | object_class_foreach(chardev_class_foreach, TYPE_CHARDEV, false, &fe); | |
854 | ||
855 | for (i = 0; i < ARRAY_SIZE(chardev_alias_table); i++) { | |
856 | fn(chardev_alias_table[i].alias, opaque); | |
857 | } | |
858 | } | |
859 | ||
860 | static void | |
861 | help_string_append(const char *name, void *opaque) | |
862 | { | |
863 | GString *str = opaque; | |
864 | ||
865 | g_string_append_printf(str, "\n%s", name); | |
2c5f4882 GH |
866 | } |
867 | ||
0ec7b3e7 MAL |
868 | Chardev *qemu_chr_new_from_opts(QemuOpts *opts, |
869 | Error **errp) | |
191bc01b | 870 | { |
0aff637e | 871 | Error *local_err = NULL; |
88cace9f | 872 | const ChardevClass *cc; |
0ec7b3e7 | 873 | Chardev *chr; |
a1698bf1 | 874 | int i; |
0b663b7d | 875 | ChardevBackend *backend = NULL; |
0b812f31 | 876 | const char *name = qemu_opt_get(opts, "backend"); |
a61ae7f8 PM |
877 | const char *id = qemu_opts_id(opts); |
878 | char *bid = NULL; | |
191bc01b | 879 | |
0b812f31 | 880 | if (name == NULL) { |
312fd5f2 | 881 | error_setg(errp, "chardev: \"%s\" missing backend", |
bd2d80b2 | 882 | qemu_opts_id(opts)); |
0b663b7d | 883 | return NULL; |
1bbd185f | 884 | } |
517b3d40 | 885 | |
0b812f31 | 886 | if (is_help_option(name)) { |
776a32a0 | 887 | GString *str = g_string_new(""); |
88cace9f MAL |
888 | |
889 | chardev_name_foreach(help_string_append, str); | |
776a32a0 MAL |
890 | |
891 | error_report("Available chardev backend types: %s", str->str); | |
892 | g_string_free(str, true); | |
0b812f31 | 893 | exit(0); |
517b3d40 LM |
894 | } |
895 | ||
896 | if (id == NULL) { | |
897 | error_setg(errp, "chardev: no id specified"); | |
0b663b7d | 898 | return NULL; |
517b3d40 LM |
899 | } |
900 | ||
88cace9f MAL |
901 | for (i = 0; i < ARRAY_SIZE(chardev_alias_table); i++) { |
902 | if (g_strcmp0(chardev_alias_table[i].alias, name) == 0) { | |
903 | name = chardev_alias_table[i].typename; | |
191bc01b | 904 | break; |
d654f34e | 905 | } |
191bc01b | 906 | } |
88cace9f MAL |
907 | |
908 | cc = char_get_class(name, errp); | |
909 | if (cc == NULL) { | |
0b663b7d | 910 | return NULL; |
191bc01b GH |
911 | } |
912 | ||
a61ae7f8 | 913 | backend = g_new0(ChardevBackend, 1); |
0b663b7d | 914 | backend->type = CHARDEV_BACKEND_KIND_NULL; |
edb2fb3c | 915 | |
a61ae7f8 PM |
916 | if (qemu_opt_get_bool(opts, "mux", 0)) { |
917 | bid = g_strdup_printf("%s-base", id); | |
918 | } | |
2c5f4882 | 919 | |
a61ae7f8 | 920 | chr = NULL; |
88cace9f MAL |
921 | if (cc->parse) { |
922 | cc->parse(opts, backend, &local_err); | |
a61ae7f8 PM |
923 | if (local_err) { |
924 | error_propagate(errp, local_err); | |
0b663b7d | 925 | goto out; |
2c5f4882 | 926 | } |
d0d7708b | 927 | } else { |
88cace9f MAL |
928 | ChardevCommon *ccom = g_new0(ChardevCommon, 1); |
929 | qemu_chr_parse_common(opts, ccom); | |
930 | backend->u.null.data = ccom; /* Any ChardevCommon member would work */ | |
2c5f4882 | 931 | } |
d0d7708b | 932 | |
0b663b7d MAL |
933 | chr = qemu_chardev_add(bid ? bid : id, |
934 | object_class_get_name(OBJECT_CLASS(cc)), | |
935 | backend, errp); | |
936 | if (chr == NULL) { | |
937 | goto out; | |
191bc01b GH |
938 | } |
939 | ||
a61ae7f8 | 940 | if (bid) { |
0b663b7d | 941 | Chardev *mux; |
a61ae7f8 | 942 | qapi_free_ChardevBackend(backend); |
a61ae7f8 | 943 | backend = g_new0(ChardevBackend, 1); |
130257dc | 944 | backend->type = CHARDEV_BACKEND_KIND_MUX; |
0b663b7d | 945 | backend->u.mux.data = g_new0(ChardevMux, 1); |
32bafa8f | 946 | backend->u.mux.data->chardev = g_strdup(bid); |
0b663b7d MAL |
947 | mux = qemu_chardev_add(id, TYPE_CHARDEV_MUX, backend, errp); |
948 | if (mux == NULL) { | |
a61ae7f8 PM |
949 | qemu_chr_delete(chr); |
950 | chr = NULL; | |
0b663b7d | 951 | goto out; |
a61ae7f8 | 952 | } |
0b663b7d | 953 | chr = mux; |
bd5c51ee | 954 | } |
7591c5c1 | 955 | |
0b663b7d | 956 | out: |
a61ae7f8 | 957 | qapi_free_ChardevBackend(backend); |
a61ae7f8 | 958 | g_free(bid); |
191bc01b GH |
959 | return chr; |
960 | } | |
961 | ||
0ec7b3e7 | 962 | Chardev *qemu_chr_new_noreplay(const char *label, const char *filename) |
6f97dba0 AL |
963 | { |
964 | const char *p; | |
0ec7b3e7 | 965 | Chardev *chr; |
191bc01b | 966 | QemuOpts *opts; |
bd2d80b2 | 967 | Error *err = NULL; |
191bc01b | 968 | |
c845f401 GH |
969 | if (strstart(filename, "chardev:", &p)) { |
970 | return qemu_chr_find(p); | |
971 | } | |
972 | ||
191bc01b | 973 | opts = qemu_chr_parse_compat(label, filename); |
7e1b35b4 GH |
974 | if (!opts) |
975 | return NULL; | |
6f97dba0 | 976 | |
b4948be9 | 977 | chr = qemu_chr_new_from_opts(opts, &err); |
84d18f06 | 978 | if (err) { |
565f65d2 | 979 | error_report_err(err); |
bd2d80b2 | 980 | } |
7e1b35b4 GH |
981 | if (chr && qemu_opt_get_bool(opts, "mux", 0)) { |
982 | monitor_init(chr, MONITOR_USE_READLINE); | |
6f97dba0 | 983 | } |
0a73336d | 984 | qemu_opts_del(opts); |
6f97dba0 AL |
985 | return chr; |
986 | } | |
987 | ||
0ec7b3e7 | 988 | Chardev *qemu_chr_new(const char *label, const char *filename) |
33577b47 | 989 | { |
0ec7b3e7 | 990 | Chardev *chr; |
b4948be9 | 991 | chr = qemu_chr_new_noreplay(label, filename); |
33577b47 | 992 | if (chr) { |
5ebd6703 MAL |
993 | if (replay_mode != REPLAY_MODE_NONE) { |
994 | qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_REPLAY); | |
995 | } | |
777357d7 | 996 | if (qemu_chr_replay(chr) && CHARDEV_GET_CLASS(chr)->chr_ioctl) { |
776a32a0 MAL |
997 | error_report("Replay: ioctl is not supported " |
998 | "for serial devices yet"); | |
33577b47 PD |
999 | } |
1000 | replay_register_char_driver(chr); | |
1001 | } | |
1002 | return chr; | |
1003 | } | |
1004 | ||
5345fdb4 | 1005 | void qemu_chr_fe_set_echo(CharBackend *be, bool echo) |
c48855e1 | 1006 | { |
0ec7b3e7 | 1007 | Chardev *chr = be->chr; |
5345fdb4 | 1008 | |
777357d7 MAL |
1009 | if (chr && CHARDEV_GET_CLASS(chr)->chr_set_echo) { |
1010 | CHARDEV_GET_CLASS(chr)->chr_set_echo(chr, echo); | |
c48855e1 PB |
1011 | } |
1012 | } | |
1013 | ||
5345fdb4 | 1014 | void qemu_chr_fe_set_open(CharBackend *be, int fe_open) |
7c32c4fe | 1015 | { |
0ec7b3e7 | 1016 | Chardev *chr = be->chr; |
5345fdb4 | 1017 | |
fa394ed6 MAL |
1018 | if (!chr) { |
1019 | return; | |
1020 | } | |
1021 | ||
830896af | 1022 | if (be->fe_open == fe_open) { |
c0c4bd2c HG |
1023 | return; |
1024 | } | |
830896af | 1025 | be->fe_open = fe_open; |
777357d7 MAL |
1026 | if (CHARDEV_GET_CLASS(chr)->chr_set_fe_open) { |
1027 | CHARDEV_GET_CLASS(chr)->chr_set_fe_open(chr, fe_open); | |
7c32c4fe HG |
1028 | } |
1029 | } | |
1030 | ||
5345fdb4 | 1031 | guint qemu_chr_fe_add_watch(CharBackend *be, GIOCondition cond, |
6f1de6b7 | 1032 | GIOFunc func, void *user_data) |
23673ca7 | 1033 | { |
0ec7b3e7 | 1034 | Chardev *s = be->chr; |
23673ca7 AL |
1035 | GSource *src; |
1036 | guint tag; | |
1037 | ||
777357d7 | 1038 | if (!s || CHARDEV_GET_CLASS(s)->chr_add_watch == NULL) { |
6f1de6b7 | 1039 | return 0; |
23673ca7 AL |
1040 | } |
1041 | ||
777357d7 | 1042 | src = CHARDEV_GET_CLASS(s)->chr_add_watch(s, cond); |
62c339c5 | 1043 | if (!src) { |
6f1de6b7 | 1044 | return 0; |
62c339c5 PB |
1045 | } |
1046 | ||
23673ca7 AL |
1047 | g_source_set_callback(src, (GSourceFunc)func, user_data, NULL); |
1048 | tag = g_source_attach(src, NULL); | |
1049 | g_source_unref(src); | |
1050 | ||
1051 | return tag; | |
1052 | } | |
1053 | ||
5345fdb4 | 1054 | void qemu_chr_fe_disconnect(CharBackend *be) |
7d9d17f7 | 1055 | { |
0ec7b3e7 | 1056 | Chardev *chr = be->chr; |
5345fdb4 | 1057 | |
777357d7 MAL |
1058 | if (chr && CHARDEV_GET_CLASS(chr)->chr_disconnect) { |
1059 | CHARDEV_GET_CLASS(chr)->chr_disconnect(chr); | |
7d9d17f7 TM |
1060 | } |
1061 | } | |
1062 | ||
0ec7b3e7 | 1063 | void qemu_chr_delete(Chardev *chr) |
1ad78ea5 MAL |
1064 | { |
1065 | QTAILQ_REMOVE(&chardevs, chr, next); | |
8cddc469 | 1066 | object_unref(OBJECT(chr)); |
1ad78ea5 MAL |
1067 | } |
1068 | ||
c5a415a0 | 1069 | ChardevInfoList *qmp_query_chardev(Error **errp) |
6f97dba0 | 1070 | { |
c5a415a0 | 1071 | ChardevInfoList *chr_list = NULL; |
0ec7b3e7 | 1072 | Chardev *chr; |
6f97dba0 | 1073 | |
72cf2d4f | 1074 | QTAILQ_FOREACH(chr, &chardevs, next) { |
c5a415a0 LC |
1075 | ChardevInfoList *info = g_malloc0(sizeof(*info)); |
1076 | info->value = g_malloc0(sizeof(*info->value)); | |
1077 | info->value->label = g_strdup(chr->label); | |
1078 | info->value->filename = g_strdup(chr->filename); | |
830896af | 1079 | info->value->frontend_open = chr->be && chr->be->fe_open; |
c5a415a0 LC |
1080 | |
1081 | info->next = chr_list; | |
1082 | chr_list = info; | |
6f97dba0 | 1083 | } |
588b3832 | 1084 | |
c5a415a0 | 1085 | return chr_list; |
6f97dba0 | 1086 | } |
c845f401 | 1087 | |
88cace9f MAL |
1088 | static void |
1089 | qmp_prepend_backend(const char *name, void *opaque) | |
0b812f31 | 1090 | { |
88cace9f | 1091 | ChardevBackendInfoList **list = opaque; |
0b812f31 | 1092 | ChardevBackendInfoList *info = g_malloc0(sizeof(*info)); |
88cace9f | 1093 | |
0b812f31 MAL |
1094 | info->value = g_malloc0(sizeof(*info->value)); |
1095 | info->value->name = g_strdup(name); | |
88cace9f MAL |
1096 | info->next = *list; |
1097 | *list = info; | |
0b812f31 MAL |
1098 | } |
1099 | ||
77d1c3c6 MK |
1100 | ChardevBackendInfoList *qmp_query_chardev_backends(Error **errp) |
1101 | { | |
1102 | ChardevBackendInfoList *backend_list = NULL; | |
a1698bf1 | 1103 | |
88cace9f | 1104 | chardev_name_foreach(qmp_prepend_backend, &backend_list); |
77d1c3c6 MK |
1105 | |
1106 | return backend_list; | |
1107 | } | |
1108 | ||
0ec7b3e7 | 1109 | Chardev *qemu_chr_find(const char *name) |
c845f401 | 1110 | { |
0ec7b3e7 | 1111 | Chardev *chr; |
c845f401 | 1112 | |
72cf2d4f | 1113 | QTAILQ_FOREACH(chr, &chardevs, next) { |
c845f401 GH |
1114 | if (strcmp(chr->label, name) != 0) |
1115 | continue; | |
1116 | return chr; | |
1117 | } | |
1118 | return NULL; | |
1119 | } | |
0beb4942 | 1120 | |
4d454574 PB |
1121 | QemuOptsList qemu_chardev_opts = { |
1122 | .name = "chardev", | |
1123 | .implied_opt_name = "backend", | |
1124 | .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head), | |
1125 | .desc = { | |
1126 | { | |
1127 | .name = "backend", | |
1128 | .type = QEMU_OPT_STRING, | |
1129 | },{ | |
1130 | .name = "path", | |
1131 | .type = QEMU_OPT_STRING, | |
1132 | },{ | |
1133 | .name = "host", | |
1134 | .type = QEMU_OPT_STRING, | |
1135 | },{ | |
1136 | .name = "port", | |
1137 | .type = QEMU_OPT_STRING, | |
1138 | },{ | |
1139 | .name = "localaddr", | |
1140 | .type = QEMU_OPT_STRING, | |
1141 | },{ | |
1142 | .name = "localport", | |
1143 | .type = QEMU_OPT_STRING, | |
1144 | },{ | |
1145 | .name = "to", | |
1146 | .type = QEMU_OPT_NUMBER, | |
1147 | },{ | |
1148 | .name = "ipv4", | |
1149 | .type = QEMU_OPT_BOOL, | |
1150 | },{ | |
1151 | .name = "ipv6", | |
1152 | .type = QEMU_OPT_BOOL, | |
1153 | },{ | |
1154 | .name = "wait", | |
1155 | .type = QEMU_OPT_BOOL, | |
1156 | },{ | |
1157 | .name = "server", | |
1158 | .type = QEMU_OPT_BOOL, | |
1159 | },{ | |
1160 | .name = "delay", | |
1161 | .type = QEMU_OPT_BOOL, | |
5dd1f02b CM |
1162 | },{ |
1163 | .name = "reconnect", | |
1164 | .type = QEMU_OPT_NUMBER, | |
4d454574 PB |
1165 | },{ |
1166 | .name = "telnet", | |
1167 | .type = QEMU_OPT_BOOL, | |
a8fb5427 DB |
1168 | },{ |
1169 | .name = "tls-creds", | |
1170 | .type = QEMU_OPT_STRING, | |
4d454574 PB |
1171 | },{ |
1172 | .name = "width", | |
1173 | .type = QEMU_OPT_NUMBER, | |
1174 | },{ | |
1175 | .name = "height", | |
1176 | .type = QEMU_OPT_NUMBER, | |
1177 | },{ | |
1178 | .name = "cols", | |
1179 | .type = QEMU_OPT_NUMBER, | |
1180 | },{ | |
1181 | .name = "rows", | |
1182 | .type = QEMU_OPT_NUMBER, | |
1183 | },{ | |
1184 | .name = "mux", | |
1185 | .type = QEMU_OPT_BOOL, | |
1186 | },{ | |
1187 | .name = "signal", | |
1188 | .type = QEMU_OPT_BOOL, | |
1189 | },{ | |
1190 | .name = "name", | |
1191 | .type = QEMU_OPT_STRING, | |
1192 | },{ | |
1193 | .name = "debug", | |
1194 | .type = QEMU_OPT_NUMBER, | |
51767e7c | 1195 | },{ |
3949e594 | 1196 | .name = "size", |
de1cc36e | 1197 | .type = QEMU_OPT_SIZE, |
bb6fb7c0 GH |
1198 | },{ |
1199 | .name = "chardev", | |
1200 | .type = QEMU_OPT_STRING, | |
31e38a22 OK |
1201 | },{ |
1202 | .name = "append", | |
1203 | .type = QEMU_OPT_BOOL, | |
d0d7708b DB |
1204 | },{ |
1205 | .name = "logfile", | |
1206 | .type = QEMU_OPT_STRING, | |
1207 | },{ | |
1208 | .name = "logappend", | |
1209 | .type = QEMU_OPT_BOOL, | |
4d454574 PB |
1210 | }, |
1211 | { /* end of list */ } | |
1212 | }, | |
1213 | }; | |
f1a1a356 | 1214 | |
0ec7b3e7 | 1215 | bool qemu_chr_has_feature(Chardev *chr, |
279b066e | 1216 | ChardevFeature feature) |
0a73336d DB |
1217 | { |
1218 | return test_bit(feature, chr->features); | |
1219 | } | |
1220 | ||
0ec7b3e7 | 1221 | void qemu_chr_set_feature(Chardev *chr, |
279b066e | 1222 | ChardevFeature feature) |
0a73336d DB |
1223 | { |
1224 | return set_bit(feature, chr->features); | |
1225 | } | |
1226 | ||
777357d7 MAL |
1227 | Chardev *qemu_chardev_new(const char *id, const char *typename, |
1228 | ChardevBackend *backend, Error **errp) | |
f1a1a356 | 1229 | { |
0ec7b3e7 | 1230 | Chardev *chr = NULL; |
eaeba653 | 1231 | Error *local_err = NULL; |
82878dac | 1232 | bool be_opened = true; |
f1a1a356 | 1233 | |
777357d7 | 1234 | assert(g_str_has_prefix(typename, "chardev-")); |
f1a1a356 | 1235 | |
777357d7 MAL |
1236 | chr = CHARDEV(object_new(typename)); |
1237 | chr->label = g_strdup(id); | |
4ca17281 | 1238 | |
777357d7 | 1239 | qemu_char_open(chr, backend, &be_opened, &local_err); |
a1698bf1 MAL |
1240 | if (local_err) { |
1241 | error_propagate(errp, local_err); | |
777357d7 MAL |
1242 | object_unref(OBJECT(chr)); |
1243 | return NULL; | |
eaeba653 PB |
1244 | } |
1245 | ||
eaeba653 | 1246 | if (!chr->filename) { |
777357d7 | 1247 | chr->filename = g_strdup(typename + 8); |
f1a1a356 | 1248 | } |
82878dac | 1249 | if (be_opened) { |
eaeba653 PB |
1250 | qemu_chr_be_event(chr, CHR_EVENT_OPENED); |
1251 | } | |
777357d7 MAL |
1252 | |
1253 | return chr; | |
1254 | } | |
1255 | ||
1256 | ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend, | |
1257 | Error **errp) | |
1258 | { | |
1259 | const ChardevClass *cc; | |
1260 | ChardevReturn *ret; | |
1261 | Chardev *chr; | |
1262 | ||
777357d7 MAL |
1263 | cc = char_get_class(ChardevBackendKind_lookup[backend->type], errp); |
1264 | if (!cc) { | |
1265 | return NULL; | |
1266 | } | |
1267 | ||
0b663b7d | 1268 | chr = qemu_chardev_add(id, object_class_get_name(OBJECT_CLASS(cc)), |
777357d7 MAL |
1269 | backend, errp); |
1270 | if (!chr) { | |
1271 | return NULL; | |
1272 | } | |
1273 | ||
1274 | ret = g_new0(ChardevReturn, 1); | |
1275 | if (CHARDEV_IS_PTY(chr)) { | |
1276 | ret->pty = g_strdup(chr->filename + 4); | |
1277 | ret->has_pty = true; | |
1278 | } | |
1279 | ||
eaeba653 | 1280 | return ret; |
f1a1a356 GH |
1281 | } |
1282 | ||
1283 | void qmp_chardev_remove(const char *id, Error **errp) | |
1284 | { | |
0ec7b3e7 | 1285 | Chardev *chr; |
f1a1a356 GH |
1286 | |
1287 | chr = qemu_chr_find(id); | |
8108fd3e | 1288 | if (chr == NULL) { |
f1a1a356 GH |
1289 | error_setg(errp, "Chardev '%s' not found", id); |
1290 | return; | |
1291 | } | |
a4afa548 | 1292 | if (qemu_chr_is_busy(chr)) { |
f1a1a356 GH |
1293 | error_setg(errp, "Chardev '%s' is busy", id); |
1294 | return; | |
1295 | } | |
5ebd6703 | 1296 | if (qemu_chr_replay(chr)) { |
33577b47 PD |
1297 | error_setg(errp, |
1298 | "Chardev '%s' cannot be unplugged in record/replay mode", id); | |
1299 | return; | |
1300 | } | |
f1a1a356 GH |
1301 | qemu_chr_delete(chr); |
1302 | } | |
d654f34e | 1303 | |
aa5cb7f5 | 1304 | void qemu_chr_cleanup(void) |
c1111a24 | 1305 | { |
0ec7b3e7 | 1306 | Chardev *chr, *tmp; |
c1111a24 MAL |
1307 | |
1308 | QTAILQ_FOREACH_SAFE(chr, &chardevs, next, tmp) { | |
1309 | qemu_chr_delete(chr); | |
1310 | } | |
1311 | } | |
1312 | ||
d654f34e AL |
1313 | static void register_types(void) |
1314 | { | |
88cace9f | 1315 | type_register_static(&char_type_info); |
0b812f31 | 1316 | |
7b7ab18d MR |
1317 | /* this must be done after machine init, since we register FEs with muxes |
1318 | * as part of realize functions like serial_isa_realizefn when -nographic | |
1319 | * is specified | |
1320 | */ | |
1321 | qemu_add_machine_init_done_notifier(&muxes_realize_notify); | |
d654f34e AL |
1322 | } |
1323 | ||
1324 | type_init(register_types); |