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Commit | Line | Data |
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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 | */ | |
e688df6b | 24 | |
d38ea87a | 25 | #include "qemu/osdep.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" |
ef2fd6f1 | 31 | #include "qemu/qemu-print.h" |
8228e353 | 32 | #include "chardev/char.h" |
e688df6b | 33 | #include "qapi/error.h" |
9af23989 | 34 | #include "qapi/qapi-commands-char.h" |
0dd13589 | 35 | #include "qapi/qmp/qerror.h" |
33577b47 | 36 | #include "sysemu/replay.h" |
517b3d40 | 37 | #include "qemu/help_option.h" |
922a01a0 | 38 | #include "qemu/option.h" |
6f97dba0 | 39 | |
8228e353 | 40 | #include "chardev/char-mux.h" |
df85a78b | 41 | |
6f97dba0 AL |
42 | /***********************************************************/ |
43 | /* character device */ | |
44 | ||
2f5d45a1 MAL |
45 | static Object *get_chardevs_root(void) |
46 | { | |
47 | return container_get(object_get_root(), "/chardevs"); | |
48 | } | |
2970a6c9 | 49 | |
d09c4a47 | 50 | static void chr_be_event(Chardev *s, int event) |
6f97dba0 | 51 | { |
a4afa548 MAL |
52 | CharBackend *be = s->be; |
53 | ||
d09c4a47 MAL |
54 | if (!be || !be->chr_event) { |
55 | return; | |
56 | } | |
57 | ||
58 | be->chr_event(be->opaque, event); | |
59 | } | |
60 | ||
61 | void qemu_chr_be_event(Chardev *s, int event) | |
62 | { | |
73cdf3f2 AG |
63 | /* Keep track if the char device is open */ |
64 | switch (event) { | |
65 | case CHR_EVENT_OPENED: | |
16665b94 | 66 | s->be_open = 1; |
73cdf3f2 AG |
67 | break; |
68 | case CHR_EVENT_CLOSED: | |
16665b94 | 69 | s->be_open = 0; |
73cdf3f2 AG |
70 | break; |
71 | } | |
72 | ||
d09c4a47 | 73 | CHARDEV_GET_CLASS(s)->chr_be_event(s, event); |
6f97dba0 AL |
74 | } |
75 | ||
d0d7708b DB |
76 | /* Not reporting errors from writing to logfile, as logs are |
77 | * defined to be "best effort" only */ | |
a9b1ca38 | 78 | static void qemu_chr_write_log(Chardev *s, const uint8_t *buf, size_t len) |
d0d7708b DB |
79 | { |
80 | size_t done = 0; | |
81 | ssize_t ret; | |
82 | ||
83 | if (s->logfd < 0) { | |
84 | return; | |
85 | } | |
86 | ||
87 | while (done < len) { | |
53628efb DB |
88 | retry: |
89 | ret = write(s->logfd, buf + done, len - done); | |
90 | if (ret == -1 && errno == EAGAIN) { | |
91 | g_usleep(100); | |
92 | goto retry; | |
93 | } | |
d0d7708b DB |
94 | |
95 | if (ret <= 0) { | |
96 | return; | |
97 | } | |
98 | done += ret; | |
99 | } | |
100 | } | |
101 | ||
a9b1ca38 MAL |
102 | static int qemu_chr_write_buffer(Chardev *s, |
103 | const uint8_t *buf, int len, | |
104 | int *offset, bool write_all) | |
33577b47 | 105 | { |
777357d7 | 106 | ChardevClass *cc = CHARDEV_GET_CLASS(s); |
33577b47 PD |
107 | int res = 0; |
108 | *offset = 0; | |
109 | ||
110 | qemu_mutex_lock(&s->chr_write_lock); | |
111 | while (*offset < len) { | |
53628efb | 112 | retry: |
777357d7 | 113 | res = cc->chr_write(s, buf + *offset, len - *offset); |
c90e9392 | 114 | if (res < 0 && errno == EAGAIN && write_all) { |
53628efb DB |
115 | g_usleep(100); |
116 | goto retry; | |
117 | } | |
33577b47 PD |
118 | |
119 | if (res <= 0) { | |
120 | break; | |
121 | } | |
122 | ||
123 | *offset += res; | |
c90e9392 MAL |
124 | if (!write_all) { |
125 | break; | |
126 | } | |
33577b47 PD |
127 | } |
128 | if (*offset > 0) { | |
a9b1ca38 | 129 | qemu_chr_write_log(s, buf, *offset); |
33577b47 PD |
130 | } |
131 | qemu_mutex_unlock(&s->chr_write_lock); | |
132 | ||
133 | return res; | |
134 | } | |
135 | ||
4d43a603 | 136 | int qemu_chr_write(Chardev *s, const uint8_t *buf, int len, bool write_all) |
cd18720a | 137 | { |
c90e9392 | 138 | int offset = 0; |
33577b47 | 139 | int res; |
cd18720a | 140 | |
5ebd6703 | 141 | if (qemu_chr_replay(s) && replay_mode == REPLAY_MODE_PLAY) { |
33577b47 PD |
142 | replay_char_write_event_load(&res, &offset); |
143 | assert(offset <= len); | |
a9b1ca38 | 144 | qemu_chr_write_buffer(s, buf, offset, &offset, true); |
33577b47 PD |
145 | return res; |
146 | } | |
cd18720a | 147 | |
a9b1ca38 | 148 | res = qemu_chr_write_buffer(s, buf, len, &offset, write_all); |
cd18720a | 149 | |
5ebd6703 | 150 | if (qemu_chr_replay(s) && replay_mode == REPLAY_MODE_RECORD) { |
33577b47 | 151 | replay_char_write_event_save(res, offset); |
cd18720a AL |
152 | } |
153 | ||
9005b2a7 PB |
154 | if (res < 0) { |
155 | return res; | |
156 | } | |
cd18720a AL |
157 | return offset; |
158 | } | |
159 | ||
0ec7b3e7 | 160 | int qemu_chr_be_can_write(Chardev *s) |
6f97dba0 | 161 | { |
a4afa548 MAL |
162 | CharBackend *be = s->be; |
163 | ||
164 | if (!be || !be->chr_can_read) { | |
6f97dba0 | 165 | return 0; |
a4afa548 MAL |
166 | } |
167 | ||
168 | return be->chr_can_read(be->opaque); | |
6f97dba0 AL |
169 | } |
170 | ||
0ec7b3e7 | 171 | void qemu_chr_be_write_impl(Chardev *s, uint8_t *buf, int len) |
6f97dba0 | 172 | { |
a4afa548 MAL |
173 | CharBackend *be = s->be; |
174 | ||
175 | if (be && be->chr_read) { | |
176 | be->chr_read(be->opaque, buf, len); | |
ac310734 | 177 | } |
6f97dba0 AL |
178 | } |
179 | ||
0ec7b3e7 | 180 | void qemu_chr_be_write(Chardev *s, uint8_t *buf, int len) |
33577b47 | 181 | { |
5ebd6703 | 182 | if (qemu_chr_replay(s)) { |
33577b47 PD |
183 | if (replay_mode == REPLAY_MODE_PLAY) { |
184 | return; | |
185 | } | |
186 | replay_chr_be_write(s, buf, len); | |
187 | } else { | |
188 | qemu_chr_be_write_impl(s, buf, len); | |
189 | } | |
190 | } | |
191 | ||
07241c20 PX |
192 | void qemu_chr_be_update_read_handlers(Chardev *s, |
193 | GMainContext *context) | |
194 | { | |
195 | ChardevClass *cc = CHARDEV_GET_CLASS(s); | |
196 | ||
9ac3788b MAL |
197 | assert(qemu_chr_has_feature(s, QEMU_CHAR_FEATURE_GCONTEXT) |
198 | || !context); | |
95eeeba6 | 199 | s->gcontext = context; |
07241c20 | 200 | if (cc->chr_update_read_handler) { |
bb86d05f | 201 | cc->chr_update_read_handler(s); |
07241c20 PX |
202 | } |
203 | } | |
204 | ||
0ec7b3e7 | 205 | int qemu_chr_add_client(Chardev *s, int fd) |
13661089 | 206 | { |
777357d7 MAL |
207 | return CHARDEV_GET_CLASS(s)->chr_add_client ? |
208 | CHARDEV_GET_CLASS(s)->chr_add_client(s, fd) : -1; | |
13661089 DB |
209 | } |
210 | ||
777357d7 MAL |
211 | static void qemu_char_open(Chardev *chr, ChardevBackend *backend, |
212 | bool *be_opened, Error **errp) | |
6f97dba0 | 213 | { |
777357d7 MAL |
214 | ChardevClass *cc = CHARDEV_GET_CLASS(chr); |
215 | /* Any ChardevCommon member would work */ | |
216 | ChardevCommon *common = backend ? backend->u.null.data : NULL; | |
217 | ||
218 | if (common && common->has_logfile) { | |
219 | int flags = O_WRONLY | O_CREAT; | |
220 | if (common->has_logappend && | |
221 | common->logappend) { | |
222 | flags |= O_APPEND; | |
223 | } else { | |
224 | flags |= O_TRUNC; | |
225 | } | |
226 | chr->logfd = qemu_open(common->logfile, flags, 0666); | |
227 | if (chr->logfd < 0) { | |
228 | error_setg_errno(errp, errno, | |
229 | "Unable to open logfile %s", | |
230 | common->logfile); | |
231 | return; | |
232 | } | |
233 | } | |
234 | ||
235 | if (cc->open) { | |
236 | cc->open(chr, backend, be_opened, errp); | |
237 | } | |
6f97dba0 AL |
238 | } |
239 | ||
777357d7 | 240 | static void char_init(Object *obj) |
6f97dba0 | 241 | { |
777357d7 | 242 | Chardev *chr = CHARDEV(obj); |
6f97dba0 | 243 | |
777357d7 MAL |
244 | chr->logfd = -1; |
245 | qemu_mutex_init(&chr->chr_write_lock); | |
9ac3788b MAL |
246 | |
247 | /* | |
248 | * Assume if chr_update_read_handler is implemented it will | |
249 | * take the updated gcontext into account. | |
250 | */ | |
251 | if (CHARDEV_GET_CLASS(chr)->chr_update_read_handler) { | |
252 | qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_GCONTEXT); | |
253 | } | |
254 | ||
777357d7 MAL |
255 | } |
256 | ||
eb314a94 MAL |
257 | static int null_chr_write(Chardev *chr, const uint8_t *buf, int len) |
258 | { | |
259 | return len; | |
260 | } | |
261 | ||
262 | static void char_class_init(ObjectClass *oc, void *data) | |
263 | { | |
264 | ChardevClass *cc = CHARDEV_CLASS(oc); | |
265 | ||
266 | cc->chr_write = null_chr_write; | |
d09c4a47 | 267 | cc->chr_be_event = chr_be_event; |
eb314a94 MAL |
268 | } |
269 | ||
777357d7 MAL |
270 | static void char_finalize(Object *obj) |
271 | { | |
272 | Chardev *chr = CHARDEV(obj); | |
273 | ||
274 | if (chr->be) { | |
275 | chr->be->chr = NULL; | |
276 | } | |
277 | g_free(chr->filename); | |
278 | g_free(chr->label); | |
279 | if (chr->logfd != -1) { | |
280 | close(chr->logfd); | |
d0d7708b | 281 | } |
777357d7 MAL |
282 | qemu_mutex_destroy(&chr->chr_write_lock); |
283 | } | |
284 | ||
285 | static const TypeInfo char_type_info = { | |
286 | .name = TYPE_CHARDEV, | |
287 | .parent = TYPE_OBJECT, | |
288 | .instance_size = sizeof(Chardev), | |
289 | .instance_init = char_init, | |
290 | .instance_finalize = char_finalize, | |
291 | .abstract = true, | |
292 | .class_size = sizeof(ChardevClass), | |
eb314a94 | 293 | .class_init = char_class_init, |
777357d7 MAL |
294 | }; |
295 | ||
c7278b43 | 296 | static int chardev_machine_done_notify_one(Object *child, void *opaque) |
7b7ab18d | 297 | { |
c7278b43 PX |
298 | Chardev *chr = (Chardev *)child; |
299 | ChardevClass *class = CHARDEV_GET_CLASS(chr); | |
300 | ||
301 | if (class->chr_machine_done) { | |
302 | return class->chr_machine_done(chr); | |
6061162e | 303 | } |
7b7ab18d | 304 | |
6061162e MAL |
305 | return 0; |
306 | } | |
7b7ab18d | 307 | |
c7278b43 | 308 | static void chardev_machine_done_hook(Notifier *notifier, void *unused) |
6061162e | 309 | { |
c7278b43 PX |
310 | int ret = object_child_foreach(get_chardevs_root(), |
311 | chardev_machine_done_notify_one, NULL); | |
312 | ||
313 | if (ret) { | |
314 | error_report("Failed to call chardev machine_done hooks"); | |
315 | exit(1); | |
316 | } | |
7b7ab18d MR |
317 | } |
318 | ||
c7278b43 PX |
319 | static Notifier chardev_machine_done_notify = { |
320 | .notify = chardev_machine_done_hook, | |
7b7ab18d MR |
321 | }; |
322 | ||
0ec7b3e7 | 323 | static bool qemu_chr_is_busy(Chardev *s) |
a4afa548 | 324 | { |
777357d7 MAL |
325 | if (CHARDEV_IS_MUX(s)) { |
326 | MuxChardev *d = MUX_CHARDEV(s); | |
a4afa548 MAL |
327 | return d->mux_cnt >= 0; |
328 | } else { | |
329 | return s->be != NULL; | |
330 | } | |
331 | } | |
332 | ||
d24ca4b8 | 333 | int qemu_chr_wait_connected(Chardev *chr, Error **errp) |
6b6723c3 | 334 | { |
777357d7 MAL |
335 | ChardevClass *cc = CHARDEV_GET_CLASS(chr); |
336 | ||
337 | if (cc->chr_wait_connected) { | |
338 | return cc->chr_wait_connected(chr, errp); | |
6b6723c3 MAL |
339 | } |
340 | ||
341 | return 0; | |
342 | } | |
343 | ||
95e30b2a MAL |
344 | QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename, |
345 | bool permit_mux_mon) | |
191bc01b | 346 | { |
6ea314d9 | 347 | char host[65], port[33], width[8], height[8]; |
aeb2c47a | 348 | int pos; |
7d31544f | 349 | const char *p; |
191bc01b | 350 | QemuOpts *opts; |
8be7e7e4 | 351 | Error *local_err = NULL; |
191bc01b | 352 | |
8be7e7e4 | 353 | opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err); |
84d18f06 | 354 | if (local_err) { |
33394884 | 355 | error_report_err(local_err); |
191bc01b | 356 | return NULL; |
8be7e7e4 | 357 | } |
191bc01b | 358 | |
7591c5c1 | 359 | if (strstart(filename, "mon:", &p)) { |
95e30b2a MAL |
360 | if (!permit_mux_mon) { |
361 | error_report("mon: isn't supported in this context"); | |
362 | return NULL; | |
363 | } | |
7591c5c1 | 364 | filename = p; |
f43e47db | 365 | qemu_opt_set(opts, "mux", "on", &error_abort); |
02c4bdf1 PB |
366 | if (strcmp(filename, "stdio") == 0) { |
367 | /* Monitor is muxed to stdio: do not exit on Ctrl+C by default | |
368 | * but pass it to the guest. Handle this only for compat syntax, | |
369 | * for -chardev syntax we have special option for this. | |
370 | * This is what -nographic did, redirecting+muxing serial+monitor | |
371 | * to stdio causing Ctrl+C to be passed to guest. */ | |
f43e47db | 372 | qemu_opt_set(opts, "signal", "off", &error_abort); |
02c4bdf1 | 373 | } |
7591c5c1 GH |
374 | } |
375 | ||
f0457e8d GH |
376 | if (strcmp(filename, "null") == 0 || |
377 | strcmp(filename, "pty") == 0 || | |
378 | strcmp(filename, "msmouse") == 0 || | |
378af961 | 379 | strcmp(filename, "wctablet") == 0 || |
dc1c21e6 | 380 | strcmp(filename, "braille") == 0 || |
5692399f | 381 | strcmp(filename, "testdev") == 0 || |
f0457e8d | 382 | strcmp(filename, "stdio") == 0) { |
f43e47db | 383 | qemu_opt_set(opts, "backend", filename, &error_abort); |
191bc01b GH |
384 | return opts; |
385 | } | |
6ea314d9 | 386 | if (strstart(filename, "vc", &p)) { |
f43e47db | 387 | qemu_opt_set(opts, "backend", "vc", &error_abort); |
6ea314d9 | 388 | if (*p == ':') { |
49aa4058 | 389 | if (sscanf(p+1, "%7[0-9]x%7[0-9]", width, height) == 2) { |
6ea314d9 | 390 | /* pixels */ |
f43e47db MA |
391 | qemu_opt_set(opts, "width", width, &error_abort); |
392 | qemu_opt_set(opts, "height", height, &error_abort); | |
49aa4058 | 393 | } else if (sscanf(p+1, "%7[0-9]Cx%7[0-9]C", width, height) == 2) { |
6ea314d9 | 394 | /* chars */ |
f43e47db MA |
395 | qemu_opt_set(opts, "cols", width, &error_abort); |
396 | qemu_opt_set(opts, "rows", height, &error_abort); | |
6ea314d9 GH |
397 | } else { |
398 | goto fail; | |
399 | } | |
400 | } | |
401 | return opts; | |
402 | } | |
d6c983cd | 403 | if (strcmp(filename, "con:") == 0) { |
f43e47db | 404 | qemu_opt_set(opts, "backend", "console", &error_abort); |
d6c983cd GH |
405 | return opts; |
406 | } | |
48b76496 | 407 | if (strstart(filename, "COM", NULL)) { |
f43e47db MA |
408 | qemu_opt_set(opts, "backend", "serial", &error_abort); |
409 | qemu_opt_set(opts, "path", filename, &error_abort); | |
48b76496 GH |
410 | return opts; |
411 | } | |
7d31544f | 412 | if (strstart(filename, "file:", &p)) { |
f43e47db MA |
413 | qemu_opt_set(opts, "backend", "file", &error_abort); |
414 | qemu_opt_set(opts, "path", p, &error_abort); | |
7d31544f GH |
415 | return opts; |
416 | } | |
417 | if (strstart(filename, "pipe:", &p)) { | |
f43e47db MA |
418 | qemu_opt_set(opts, "backend", "pipe", &error_abort); |
419 | qemu_opt_set(opts, "path", p, &error_abort); | |
7d31544f GH |
420 | return opts; |
421 | } | |
aeb2c47a | 422 | if (strstart(filename, "tcp:", &p) || |
ae92cbd5 | 423 | strstart(filename, "telnet:", &p) || |
981b06e7 JS |
424 | strstart(filename, "tn3270:", &p) || |
425 | strstart(filename, "websocket:", &p)) { | |
aeb2c47a GH |
426 | if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) { |
427 | host[0] = 0; | |
428 | if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) | |
429 | goto fail; | |
430 | } | |
f43e47db MA |
431 | qemu_opt_set(opts, "backend", "socket", &error_abort); |
432 | qemu_opt_set(opts, "host", host, &error_abort); | |
433 | qemu_opt_set(opts, "port", port, &error_abort); | |
aeb2c47a | 434 | if (p[pos] == ',') { |
dc523cd3 MA |
435 | qemu_opts_do_parse(opts, p+pos+1, NULL, &local_err); |
436 | if (local_err) { | |
437 | error_report_err(local_err); | |
aeb2c47a | 438 | goto fail; |
dc523cd3 | 439 | } |
aeb2c47a | 440 | } |
ae92cbd5 | 441 | if (strstart(filename, "telnet:", &p)) { |
f43e47db | 442 | qemu_opt_set(opts, "telnet", "on", &error_abort); |
ae92cbd5 JL |
443 | } else if (strstart(filename, "tn3270:", &p)) { |
444 | qemu_opt_set(opts, "tn3270", "on", &error_abort); | |
981b06e7 JS |
445 | } else if (strstart(filename, "websocket:", &p)) { |
446 | qemu_opt_set(opts, "websocket", "on", &error_abort); | |
ae92cbd5 | 447 | } |
aeb2c47a GH |
448 | return opts; |
449 | } | |
7e1b35b4 | 450 | if (strstart(filename, "udp:", &p)) { |
f43e47db | 451 | qemu_opt_set(opts, "backend", "udp", &error_abort); |
7e1b35b4 GH |
452 | if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) { |
453 | host[0] = 0; | |
39324ca4 | 454 | if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) { |
7e1b35b4 GH |
455 | goto fail; |
456 | } | |
457 | } | |
f43e47db MA |
458 | qemu_opt_set(opts, "host", host, &error_abort); |
459 | qemu_opt_set(opts, "port", port, &error_abort); | |
7e1b35b4 GH |
460 | if (p[pos] == '@') { |
461 | p += pos + 1; | |
462 | if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) { | |
463 | host[0] = 0; | |
464 | if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) { | |
7e1b35b4 GH |
465 | goto fail; |
466 | } | |
467 | } | |
f43e47db MA |
468 | qemu_opt_set(opts, "localaddr", host, &error_abort); |
469 | qemu_opt_set(opts, "localport", port, &error_abort); | |
7e1b35b4 GH |
470 | } |
471 | return opts; | |
472 | } | |
aeb2c47a | 473 | if (strstart(filename, "unix:", &p)) { |
f43e47db | 474 | qemu_opt_set(opts, "backend", "socket", &error_abort); |
dc523cd3 MA |
475 | qemu_opts_do_parse(opts, p, "path", &local_err); |
476 | if (local_err) { | |
477 | error_report_err(local_err); | |
aeb2c47a | 478 | goto fail; |
dc523cd3 | 479 | } |
aeb2c47a GH |
480 | return opts; |
481 | } | |
48b76496 GH |
482 | if (strstart(filename, "/dev/parport", NULL) || |
483 | strstart(filename, "/dev/ppi", NULL)) { | |
73119c28 | 484 | qemu_opt_set(opts, "backend", "parallel", &error_abort); |
f43e47db | 485 | qemu_opt_set(opts, "path", filename, &error_abort); |
48b76496 GH |
486 | return opts; |
487 | } | |
488 | if (strstart(filename, "/dev/", NULL)) { | |
73119c28 | 489 | qemu_opt_set(opts, "backend", "serial", &error_abort); |
f43e47db | 490 | qemu_opt_set(opts, "path", filename, &error_abort); |
48b76496 GH |
491 | return opts; |
492 | } | |
191bc01b | 493 | |
0bf62dc8 DB |
494 | error_report("'%s' is not a valid char driver", filename); |
495 | ||
aeb2c47a | 496 | fail: |
191bc01b GH |
497 | qemu_opts_del(opts); |
498 | return NULL; | |
499 | } | |
500 | ||
21a933ea | 501 | void qemu_chr_parse_common(QemuOpts *opts, ChardevCommon *backend) |
d0d7708b DB |
502 | { |
503 | const char *logfile = qemu_opt_get(opts, "logfile"); | |
504 | ||
505 | backend->has_logfile = logfile != NULL; | |
e1f98fe4 | 506 | backend->logfile = g_strdup(logfile); |
d0d7708b DB |
507 | |
508 | backend->has_logappend = true; | |
509 | backend->logappend = qemu_opt_get_bool(opts, "logappend", false); | |
510 | } | |
511 | ||
88cace9f MAL |
512 | static const ChardevClass *char_get_class(const char *driver, Error **errp) |
513 | { | |
514 | ObjectClass *oc; | |
515 | const ChardevClass *cc; | |
516 | char *typename = g_strdup_printf("chardev-%s", driver); | |
517 | ||
518 | oc = object_class_by_name(typename); | |
519 | g_free(typename); | |
520 | ||
521 | if (!object_class_dynamic_cast(oc, TYPE_CHARDEV)) { | |
522 | error_setg(errp, "'%s' is not a valid char driver name", driver); | |
523 | return NULL; | |
524 | } | |
d654f34e | 525 | |
88cace9f MAL |
526 | if (object_class_is_abstract(oc)) { |
527 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "driver", | |
528 | "abstract device type"); | |
529 | return NULL; | |
530 | } | |
531 | ||
532 | cc = CHARDEV_CLASS(oc); | |
533 | if (cc->internal) { | |
534 | error_setg(errp, "'%s' is not a valid char driver name", driver); | |
535 | return NULL; | |
536 | } | |
537 | ||
538 | return cc; | |
539 | } | |
540 | ||
541 | static const struct ChardevAlias { | |
542 | const char *typename; | |
543 | const char *alias; | |
544 | } chardev_alias_table[] = { | |
545 | #ifdef HAVE_CHARDEV_PARPORT | |
546 | { "parallel", "parport" }, | |
547 | #endif | |
548 | #ifdef HAVE_CHARDEV_SERIAL | |
549 | { "serial", "tty" }, | |
550 | #endif | |
551 | }; | |
552 | ||
553 | typedef struct ChadevClassFE { | |
554 | void (*fn)(const char *name, void *opaque); | |
555 | void *opaque; | |
556 | } ChadevClassFE; | |
557 | ||
558 | static void | |
559 | chardev_class_foreach(ObjectClass *klass, void *opaque) | |
2c5f4882 | 560 | { |
88cace9f MAL |
561 | ChadevClassFE *fe = opaque; |
562 | ||
563 | assert(g_str_has_prefix(object_class_get_name(klass), "chardev-")); | |
564 | if (CHARDEV_CLASS(klass)->internal) { | |
565 | return; | |
566 | } | |
567 | ||
568 | fe->fn(object_class_get_name(klass) + 8, fe->opaque); | |
569 | } | |
570 | ||
571 | static void | |
572 | chardev_name_foreach(void (*fn)(const char *name, void *opaque), void *opaque) | |
573 | { | |
574 | ChadevClassFE fe = { .fn = fn, .opaque = opaque }; | |
575 | int i; | |
576 | ||
577 | object_class_foreach(chardev_class_foreach, TYPE_CHARDEV, false, &fe); | |
578 | ||
c7e47c63 | 579 | for (i = 0; i < (int)ARRAY_SIZE(chardev_alias_table); i++) { |
88cace9f MAL |
580 | fn(chardev_alias_table[i].alias, opaque); |
581 | } | |
582 | } | |
583 | ||
584 | static void | |
585 | help_string_append(const char *name, void *opaque) | |
586 | { | |
587 | GString *str = opaque; | |
588 | ||
8513ec28 | 589 | g_string_append_printf(str, "\n %s", name); |
2c5f4882 GH |
590 | } |
591 | ||
313e45b5 AN |
592 | static const char *chardev_alias_translate(const char *name) |
593 | { | |
594 | int i; | |
595 | for (i = 0; i < (int)ARRAY_SIZE(chardev_alias_table); i++) { | |
596 | if (g_strcmp0(chardev_alias_table[i].alias, name) == 0) { | |
597 | return chardev_alias_table[i].typename; | |
598 | } | |
599 | } | |
600 | return name; | |
601 | } | |
602 | ||
75b60160 | 603 | ChardevBackend *qemu_chr_parse_opts(QemuOpts *opts, Error **errp) |
191bc01b | 604 | { |
0aff637e | 605 | Error *local_err = NULL; |
88cace9f | 606 | const ChardevClass *cc; |
0b663b7d | 607 | ChardevBackend *backend = NULL; |
313e45b5 | 608 | const char *name = chardev_alias_translate(qemu_opt_get(opts, "backend")); |
191bc01b | 609 | |
0b812f31 | 610 | if (name == NULL) { |
312fd5f2 | 611 | error_setg(errp, "chardev: \"%s\" missing backend", |
bd2d80b2 | 612 | qemu_opts_id(opts)); |
0b663b7d | 613 | return NULL; |
1bbd185f | 614 | } |
517b3d40 | 615 | |
313e45b5 AN |
616 | cc = char_get_class(name, errp); |
617 | if (cc == NULL) { | |
618 | return NULL; | |
619 | } | |
620 | ||
621 | backend = g_new0(ChardevBackend, 1); | |
622 | backend->type = CHARDEV_BACKEND_KIND_NULL; | |
623 | ||
624 | if (cc->parse) { | |
625 | cc->parse(opts, backend, &local_err); | |
626 | if (local_err) { | |
627 | error_propagate(errp, local_err); | |
628 | qapi_free_ChardevBackend(backend); | |
629 | return NULL; | |
630 | } | |
631 | } else { | |
632 | ChardevCommon *ccom = g_new0(ChardevCommon, 1); | |
633 | qemu_chr_parse_common(opts, ccom); | |
634 | backend->u.null.data = ccom; /* Any ChardevCommon member would work */ | |
635 | } | |
636 | ||
637 | return backend; | |
638 | } | |
639 | ||
4ad6f6cb PB |
640 | Chardev *qemu_chr_new_from_opts(QemuOpts *opts, GMainContext *context, |
641 | Error **errp) | |
313e45b5 AN |
642 | { |
643 | const ChardevClass *cc; | |
644 | Chardev *chr = NULL; | |
645 | ChardevBackend *backend = NULL; | |
646 | const char *name = chardev_alias_translate(qemu_opt_get(opts, "backend")); | |
647 | const char *id = qemu_opts_id(opts); | |
648 | char *bid = NULL; | |
649 | ||
650 | if (name && is_help_option(name)) { | |
776a32a0 | 651 | GString *str = g_string_new(""); |
88cace9f MAL |
652 | |
653 | chardev_name_foreach(help_string_append, str); | |
776a32a0 | 654 | |
ef2fd6f1 | 655 | qemu_printf("Available chardev backend types: %s\n", str->str); |
776a32a0 | 656 | g_string_free(str, true); |
0ec846bf | 657 | return NULL; |
517b3d40 LM |
658 | } |
659 | ||
660 | if (id == NULL) { | |
661 | error_setg(errp, "chardev: no id specified"); | |
0b663b7d | 662 | return NULL; |
517b3d40 LM |
663 | } |
664 | ||
313e45b5 AN |
665 | backend = qemu_chr_parse_opts(opts, errp); |
666 | if (backend == NULL) { | |
667 | return NULL; | |
191bc01b | 668 | } |
88cace9f MAL |
669 | |
670 | cc = char_get_class(name, errp); | |
671 | if (cc == NULL) { | |
313e45b5 | 672 | goto out; |
191bc01b GH |
673 | } |
674 | ||
a61ae7f8 PM |
675 | if (qemu_opt_get_bool(opts, "mux", 0)) { |
676 | bid = g_strdup_printf("%s-base", id); | |
677 | } | |
2c5f4882 | 678 | |
c5749f7c | 679 | chr = qemu_chardev_new(bid ? bid : id, |
0b663b7d | 680 | object_class_get_name(OBJECT_CLASS(cc)), |
4ad6f6cb | 681 | backend, context, errp); |
c5749f7c | 682 | |
0b663b7d MAL |
683 | if (chr == NULL) { |
684 | goto out; | |
191bc01b GH |
685 | } |
686 | ||
a61ae7f8 | 687 | if (bid) { |
0b663b7d | 688 | Chardev *mux; |
a61ae7f8 | 689 | qapi_free_ChardevBackend(backend); |
a61ae7f8 | 690 | backend = g_new0(ChardevBackend, 1); |
130257dc | 691 | backend->type = CHARDEV_BACKEND_KIND_MUX; |
0b663b7d | 692 | backend->u.mux.data = g_new0(ChardevMux, 1); |
32bafa8f | 693 | backend->u.mux.data->chardev = g_strdup(bid); |
4ad6f6cb | 694 | mux = qemu_chardev_new(id, TYPE_CHARDEV_MUX, backend, context, errp); |
0b663b7d | 695 | if (mux == NULL) { |
2f5d45a1 | 696 | object_unparent(OBJECT(chr)); |
a61ae7f8 | 697 | chr = NULL; |
0b663b7d | 698 | goto out; |
a61ae7f8 | 699 | } |
0b663b7d | 700 | chr = mux; |
bd5c51ee | 701 | } |
7591c5c1 | 702 | |
0b663b7d | 703 | out: |
a61ae7f8 | 704 | qapi_free_ChardevBackend(backend); |
a61ae7f8 | 705 | g_free(bid); |
191bc01b GH |
706 | return chr; |
707 | } | |
708 | ||
95e30b2a | 709 | Chardev *qemu_chr_new_noreplay(const char *label, const char *filename, |
4ad6f6cb | 710 | bool permit_mux_mon, GMainContext *context) |
6f97dba0 AL |
711 | { |
712 | const char *p; | |
0ec7b3e7 | 713 | Chardev *chr; |
191bc01b | 714 | QemuOpts *opts; |
bd2d80b2 | 715 | Error *err = NULL; |
191bc01b | 716 | |
c845f401 GH |
717 | if (strstart(filename, "chardev:", &p)) { |
718 | return qemu_chr_find(p); | |
719 | } | |
720 | ||
95e30b2a | 721 | opts = qemu_chr_parse_compat(label, filename, permit_mux_mon); |
7e1b35b4 GH |
722 | if (!opts) |
723 | return NULL; | |
6f97dba0 | 724 | |
4ad6f6cb | 725 | chr = qemu_chr_new_from_opts(opts, context, &err); |
95e30b2a | 726 | if (!chr) { |
565f65d2 | 727 | error_report_err(err); |
95e30b2a | 728 | goto out; |
bd2d80b2 | 729 | } |
95e30b2a MAL |
730 | |
731 | if (qemu_opt_get_bool(opts, "mux", 0)) { | |
732 | assert(permit_mux_mon); | |
7e1b35b4 | 733 | monitor_init(chr, MONITOR_USE_READLINE); |
6f97dba0 | 734 | } |
95e30b2a MAL |
735 | |
736 | out: | |
0a73336d | 737 | qemu_opts_del(opts); |
6f97dba0 AL |
738 | return chr; |
739 | } | |
740 | ||
95e30b2a MAL |
741 | static Chardev *qemu_chr_new_permit_mux_mon(const char *label, |
742 | const char *filename, | |
4ad6f6cb PB |
743 | bool permit_mux_mon, |
744 | GMainContext *context) | |
33577b47 | 745 | { |
0ec7b3e7 | 746 | Chardev *chr; |
4ad6f6cb | 747 | chr = qemu_chr_new_noreplay(label, filename, permit_mux_mon, context); |
33577b47 | 748 | if (chr) { |
5ebd6703 MAL |
749 | if (replay_mode != REPLAY_MODE_NONE) { |
750 | qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_REPLAY); | |
751 | } | |
777357d7 | 752 | if (qemu_chr_replay(chr) && CHARDEV_GET_CLASS(chr)->chr_ioctl) { |
776a32a0 MAL |
753 | error_report("Replay: ioctl is not supported " |
754 | "for serial devices yet"); | |
33577b47 PD |
755 | } |
756 | replay_register_char_driver(chr); | |
757 | } | |
758 | return chr; | |
759 | } | |
760 | ||
4ad6f6cb PB |
761 | Chardev *qemu_chr_new(const char *label, const char *filename, |
762 | GMainContext *context) | |
95e30b2a | 763 | { |
4ad6f6cb | 764 | return qemu_chr_new_permit_mux_mon(label, filename, false, context); |
95e30b2a MAL |
765 | } |
766 | ||
4ad6f6cb PB |
767 | Chardev *qemu_chr_new_mux_mon(const char *label, const char *filename, |
768 | GMainContext *context) | |
95e30b2a | 769 | { |
4ad6f6cb | 770 | return qemu_chr_new_permit_mux_mon(label, filename, true, context); |
95e30b2a MAL |
771 | } |
772 | ||
6061162e | 773 | static int qmp_query_chardev_foreach(Object *obj, void *data) |
1ad78ea5 | 774 | { |
6061162e MAL |
775 | Chardev *chr = CHARDEV(obj); |
776 | ChardevInfoList **list = data; | |
777 | ChardevInfoList *info = g_malloc0(sizeof(*info)); | |
778 | ||
779 | info->value = g_malloc0(sizeof(*info->value)); | |
780 | info->value->label = g_strdup(chr->label); | |
781 | info->value->filename = g_strdup(chr->filename); | |
782 | info->value->frontend_open = chr->be && chr->be->fe_open; | |
783 | ||
784 | info->next = *list; | |
785 | *list = info; | |
786 | ||
787 | return 0; | |
1ad78ea5 MAL |
788 | } |
789 | ||
c5a415a0 | 790 | ChardevInfoList *qmp_query_chardev(Error **errp) |
6f97dba0 | 791 | { |
c5a415a0 | 792 | ChardevInfoList *chr_list = NULL; |
6f97dba0 | 793 | |
6061162e MAL |
794 | object_child_foreach(get_chardevs_root(), |
795 | qmp_query_chardev_foreach, &chr_list); | |
588b3832 | 796 | |
c5a415a0 | 797 | return chr_list; |
6f97dba0 | 798 | } |
c845f401 | 799 | |
88cace9f MAL |
800 | static void |
801 | qmp_prepend_backend(const char *name, void *opaque) | |
0b812f31 | 802 | { |
88cace9f | 803 | ChardevBackendInfoList **list = opaque; |
0b812f31 | 804 | ChardevBackendInfoList *info = g_malloc0(sizeof(*info)); |
88cace9f | 805 | |
0b812f31 MAL |
806 | info->value = g_malloc0(sizeof(*info->value)); |
807 | info->value->name = g_strdup(name); | |
88cace9f MAL |
808 | info->next = *list; |
809 | *list = info; | |
0b812f31 MAL |
810 | } |
811 | ||
77d1c3c6 MK |
812 | ChardevBackendInfoList *qmp_query_chardev_backends(Error **errp) |
813 | { | |
814 | ChardevBackendInfoList *backend_list = NULL; | |
a1698bf1 | 815 | |
88cace9f | 816 | chardev_name_foreach(qmp_prepend_backend, &backend_list); |
77d1c3c6 MK |
817 | |
818 | return backend_list; | |
819 | } | |
820 | ||
0ec7b3e7 | 821 | Chardev *qemu_chr_find(const char *name) |
c845f401 | 822 | { |
6061162e | 823 | Object *obj = object_resolve_path_component(get_chardevs_root(), name); |
c845f401 | 824 | |
6061162e | 825 | return obj ? CHARDEV(obj) : NULL; |
c845f401 | 826 | } |
0beb4942 | 827 | |
4d454574 PB |
828 | QemuOptsList qemu_chardev_opts = { |
829 | .name = "chardev", | |
830 | .implied_opt_name = "backend", | |
831 | .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head), | |
832 | .desc = { | |
833 | { | |
834 | .name = "backend", | |
835 | .type = QEMU_OPT_STRING, | |
836 | },{ | |
837 | .name = "path", | |
838 | .type = QEMU_OPT_STRING, | |
839 | },{ | |
840 | .name = "host", | |
841 | .type = QEMU_OPT_STRING, | |
842 | },{ | |
843 | .name = "port", | |
844 | .type = QEMU_OPT_STRING, | |
0935700f DB |
845 | },{ |
846 | .name = "fd", | |
847 | .type = QEMU_OPT_STRING, | |
4d454574 PB |
848 | },{ |
849 | .name = "localaddr", | |
850 | .type = QEMU_OPT_STRING, | |
851 | },{ | |
852 | .name = "localport", | |
853 | .type = QEMU_OPT_STRING, | |
854 | },{ | |
855 | .name = "to", | |
856 | .type = QEMU_OPT_NUMBER, | |
857 | },{ | |
858 | .name = "ipv4", | |
859 | .type = QEMU_OPT_BOOL, | |
860 | },{ | |
861 | .name = "ipv6", | |
862 | .type = QEMU_OPT_BOOL, | |
863 | },{ | |
864 | .name = "wait", | |
865 | .type = QEMU_OPT_BOOL, | |
866 | },{ | |
867 | .name = "server", | |
868 | .type = QEMU_OPT_BOOL, | |
869 | },{ | |
870 | .name = "delay", | |
871 | .type = QEMU_OPT_BOOL, | |
5dd1f02b CM |
872 | },{ |
873 | .name = "reconnect", | |
874 | .type = QEMU_OPT_NUMBER, | |
4d454574 PB |
875 | },{ |
876 | .name = "telnet", | |
877 | .type = QEMU_OPT_BOOL, | |
ae92cbd5 JL |
878 | },{ |
879 | .name = "tn3270", | |
880 | .type = QEMU_OPT_BOOL, | |
a8fb5427 DB |
881 | },{ |
882 | .name = "tls-creds", | |
883 | .type = QEMU_OPT_STRING, | |
fd4a5fd4 DB |
884 | },{ |
885 | .name = "tls-authz", | |
886 | .type = QEMU_OPT_STRING, | |
981b06e7 JS |
887 | },{ |
888 | .name = "websocket", | |
889 | .type = QEMU_OPT_BOOL, | |
4d454574 PB |
890 | },{ |
891 | .name = "width", | |
892 | .type = QEMU_OPT_NUMBER, | |
893 | },{ | |
894 | .name = "height", | |
895 | .type = QEMU_OPT_NUMBER, | |
896 | },{ | |
897 | .name = "cols", | |
898 | .type = QEMU_OPT_NUMBER, | |
899 | },{ | |
900 | .name = "rows", | |
901 | .type = QEMU_OPT_NUMBER, | |
902 | },{ | |
903 | .name = "mux", | |
904 | .type = QEMU_OPT_BOOL, | |
905 | },{ | |
906 | .name = "signal", | |
907 | .type = QEMU_OPT_BOOL, | |
908 | },{ | |
909 | .name = "name", | |
910 | .type = QEMU_OPT_STRING, | |
911 | },{ | |
912 | .name = "debug", | |
913 | .type = QEMU_OPT_NUMBER, | |
51767e7c | 914 | },{ |
3949e594 | 915 | .name = "size", |
de1cc36e | 916 | .type = QEMU_OPT_SIZE, |
bb6fb7c0 GH |
917 | },{ |
918 | .name = "chardev", | |
919 | .type = QEMU_OPT_STRING, | |
31e38a22 OK |
920 | },{ |
921 | .name = "append", | |
922 | .type = QEMU_OPT_BOOL, | |
d0d7708b DB |
923 | },{ |
924 | .name = "logfile", | |
925 | .type = QEMU_OPT_STRING, | |
926 | },{ | |
927 | .name = "logappend", | |
928 | .type = QEMU_OPT_BOOL, | |
4d454574 PB |
929 | }, |
930 | { /* end of list */ } | |
931 | }, | |
932 | }; | |
f1a1a356 | 933 | |
0ec7b3e7 | 934 | bool qemu_chr_has_feature(Chardev *chr, |
279b066e | 935 | ChardevFeature feature) |
0a73336d DB |
936 | { |
937 | return test_bit(feature, chr->features); | |
938 | } | |
939 | ||
0ec7b3e7 | 940 | void qemu_chr_set_feature(Chardev *chr, |
279b066e | 941 | ChardevFeature feature) |
0a73336d DB |
942 | { |
943 | return set_bit(feature, chr->features); | |
944 | } | |
945 | ||
777357d7 | 946 | Chardev *qemu_chardev_new(const char *id, const char *typename, |
2f5d45a1 | 947 | ChardevBackend *backend, |
4ad6f6cb | 948 | GMainContext *gcontext, |
2f5d45a1 | 949 | Error **errp) |
f1a1a356 | 950 | { |
2f5d45a1 | 951 | Object *obj; |
0ec7b3e7 | 952 | Chardev *chr = NULL; |
eaeba653 | 953 | Error *local_err = NULL; |
82878dac | 954 | bool be_opened = true; |
f1a1a356 | 955 | |
777357d7 | 956 | assert(g_str_has_prefix(typename, "chardev-")); |
f1a1a356 | 957 | |
2f5d45a1 MAL |
958 | obj = object_new(typename); |
959 | chr = CHARDEV(obj); | |
777357d7 | 960 | chr->label = g_strdup(id); |
4ad6f6cb | 961 | chr->gcontext = gcontext; |
4ca17281 | 962 | |
777357d7 | 963 | qemu_char_open(chr, backend, &be_opened, &local_err); |
a1698bf1 | 964 | if (local_err) { |
2f5d45a1 | 965 | goto end; |
eaeba653 PB |
966 | } |
967 | ||
eaeba653 | 968 | if (!chr->filename) { |
777357d7 | 969 | chr->filename = g_strdup(typename + 8); |
f1a1a356 | 970 | } |
82878dac | 971 | if (be_opened) { |
eaeba653 PB |
972 | qemu_chr_be_event(chr, CHR_EVENT_OPENED); |
973 | } | |
777357d7 | 974 | |
2f5d45a1 MAL |
975 | if (id) { |
976 | object_property_add_child(get_chardevs_root(), id, obj, &local_err); | |
977 | if (local_err) { | |
978 | goto end; | |
979 | } | |
980 | object_unref(obj); | |
981 | } | |
982 | ||
983 | end: | |
984 | if (local_err) { | |
985 | error_propagate(errp, local_err); | |
986 | object_unref(obj); | |
987 | return NULL; | |
988 | } | |
989 | ||
777357d7 MAL |
990 | return chr; |
991 | } | |
992 | ||
993 | ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend, | |
994 | Error **errp) | |
995 | { | |
996 | const ChardevClass *cc; | |
997 | ChardevReturn *ret; | |
998 | Chardev *chr; | |
999 | ||
977c736f | 1000 | cc = char_get_class(ChardevBackendKind_str(backend->type), errp); |
777357d7 MAL |
1001 | if (!cc) { |
1002 | return NULL; | |
1003 | } | |
1004 | ||
c5749f7c | 1005 | chr = qemu_chardev_new(id, object_class_get_name(OBJECT_CLASS(cc)), |
4ad6f6cb | 1006 | backend, NULL, errp); |
777357d7 MAL |
1007 | if (!chr) { |
1008 | return NULL; | |
1009 | } | |
1010 | ||
1011 | ret = g_new0(ChardevReturn, 1); | |
1012 | if (CHARDEV_IS_PTY(chr)) { | |
1013 | ret->pty = g_strdup(chr->filename + 4); | |
1014 | ret->has_pty = true; | |
1015 | } | |
1016 | ||
eaeba653 | 1017 | return ret; |
f1a1a356 GH |
1018 | } |
1019 | ||
7bb86085 AN |
1020 | ChardevReturn *qmp_chardev_change(const char *id, ChardevBackend *backend, |
1021 | Error **errp) | |
1022 | { | |
1023 | CharBackend *be; | |
1024 | const ChardevClass *cc; | |
1025 | Chardev *chr, *chr_new; | |
1026 | bool closed_sent = false; | |
1027 | ChardevReturn *ret; | |
1028 | ||
1029 | chr = qemu_chr_find(id); | |
1030 | if (!chr) { | |
1031 | error_setg(errp, "Chardev '%s' does not exist", id); | |
1032 | return NULL; | |
1033 | } | |
1034 | ||
1035 | if (CHARDEV_IS_MUX(chr)) { | |
1036 | error_setg(errp, "Mux device hotswap not supported yet"); | |
1037 | return NULL; | |
1038 | } | |
1039 | ||
1040 | if (qemu_chr_replay(chr)) { | |
1041 | error_setg(errp, | |
1042 | "Chardev '%s' cannot be changed in record/replay mode", id); | |
1043 | return NULL; | |
1044 | } | |
1045 | ||
1046 | be = chr->be; | |
1047 | if (!be) { | |
1048 | /* easy case */ | |
1049 | object_unparent(OBJECT(chr)); | |
1050 | return qmp_chardev_add(id, backend, errp); | |
1051 | } | |
1052 | ||
1053 | if (!be->chr_be_change) { | |
1054 | error_setg(errp, "Chardev user does not support chardev hotswap"); | |
1055 | return NULL; | |
1056 | } | |
1057 | ||
977c736f | 1058 | cc = char_get_class(ChardevBackendKind_str(backend->type), errp); |
7bb86085 AN |
1059 | if (!cc) { |
1060 | return NULL; | |
1061 | } | |
1062 | ||
1063 | chr_new = qemu_chardev_new(NULL, object_class_get_name(OBJECT_CLASS(cc)), | |
4ad6f6cb | 1064 | backend, chr->gcontext, errp); |
7bb86085 AN |
1065 | if (!chr_new) { |
1066 | return NULL; | |
1067 | } | |
1068 | chr_new->label = g_strdup(id); | |
1069 | ||
1070 | if (chr->be_open && !chr_new->be_open) { | |
1071 | qemu_chr_be_event(chr, CHR_EVENT_CLOSED); | |
1072 | closed_sent = true; | |
1073 | } | |
1074 | ||
1075 | chr->be = NULL; | |
1076 | qemu_chr_fe_init(be, chr_new, &error_abort); | |
1077 | ||
1078 | if (be->chr_be_change(be->opaque) < 0) { | |
1079 | error_setg(errp, "Chardev '%s' change failed", chr_new->label); | |
1080 | chr_new->be = NULL; | |
1081 | qemu_chr_fe_init(be, chr, &error_abort); | |
1082 | if (closed_sent) { | |
1083 | qemu_chr_be_event(chr, CHR_EVENT_OPENED); | |
1084 | } | |
1085 | object_unref(OBJECT(chr_new)); | |
1086 | return NULL; | |
1087 | } | |
1088 | ||
1089 | object_unparent(OBJECT(chr)); | |
1090 | object_property_add_child(get_chardevs_root(), chr_new->label, | |
1091 | OBJECT(chr_new), &error_abort); | |
1092 | object_unref(OBJECT(chr_new)); | |
1093 | ||
1094 | ret = g_new0(ChardevReturn, 1); | |
1095 | if (CHARDEV_IS_PTY(chr_new)) { | |
1096 | ret->pty = g_strdup(chr_new->filename + 4); | |
1097 | ret->has_pty = true; | |
1098 | } | |
1099 | ||
1100 | return ret; | |
1101 | } | |
1102 | ||
f1a1a356 GH |
1103 | void qmp_chardev_remove(const char *id, Error **errp) |
1104 | { | |
0ec7b3e7 | 1105 | Chardev *chr; |
f1a1a356 GH |
1106 | |
1107 | chr = qemu_chr_find(id); | |
8108fd3e | 1108 | if (chr == NULL) { |
f1a1a356 GH |
1109 | error_setg(errp, "Chardev '%s' not found", id); |
1110 | return; | |
1111 | } | |
a4afa548 | 1112 | if (qemu_chr_is_busy(chr)) { |
f1a1a356 GH |
1113 | error_setg(errp, "Chardev '%s' is busy", id); |
1114 | return; | |
1115 | } | |
5ebd6703 | 1116 | if (qemu_chr_replay(chr)) { |
33577b47 PD |
1117 | error_setg(errp, |
1118 | "Chardev '%s' cannot be unplugged in record/replay mode", id); | |
1119 | return; | |
1120 | } | |
2f5d45a1 | 1121 | object_unparent(OBJECT(chr)); |
f1a1a356 | 1122 | } |
d654f34e | 1123 | |
bd1d5ad9 SF |
1124 | void qmp_chardev_send_break(const char *id, Error **errp) |
1125 | { | |
1126 | Chardev *chr; | |
1127 | ||
1128 | chr = qemu_chr_find(id); | |
1129 | if (chr == NULL) { | |
1130 | error_setg(errp, "Chardev '%s' not found", id); | |
1131 | return; | |
1132 | } | |
1133 | qemu_chr_be_event(chr, CHR_EVENT_BREAK); | |
1134 | } | |
1135 | ||
2c716ba1 PX |
1136 | /* |
1137 | * Add a timeout callback for the chardev (in milliseconds), return | |
1138 | * the GSource object created. Please use this to add timeout hook for | |
1139 | * chardev instead of g_timeout_add() and g_timeout_add_seconds(), to | |
1140 | * make sure the gcontext that the task bound to is correct. | |
1141 | */ | |
1142 | GSource *qemu_chr_timeout_add_ms(Chardev *chr, guint ms, | |
1143 | GSourceFunc func, void *private) | |
1144 | { | |
1145 | GSource *source = g_timeout_source_new(ms); | |
1146 | ||
1147 | assert(func); | |
1148 | g_source_set_callback(source, func, private, NULL); | |
1149 | g_source_attach(source, chr->gcontext); | |
1150 | ||
1151 | return source; | |
1152 | } | |
1153 | ||
aa5cb7f5 | 1154 | void qemu_chr_cleanup(void) |
c1111a24 | 1155 | { |
2f5d45a1 | 1156 | object_unparent(get_chardevs_root()); |
c1111a24 MAL |
1157 | } |
1158 | ||
d654f34e AL |
1159 | static void register_types(void) |
1160 | { | |
88cace9f | 1161 | type_register_static(&char_type_info); |
0b812f31 | 1162 | |
7b7ab18d MR |
1163 | /* this must be done after machine init, since we register FEs with muxes |
1164 | * as part of realize functions like serial_isa_realizefn when -nographic | |
1165 | * is specified | |
1166 | */ | |
c7278b43 | 1167 | qemu_add_machine_init_done_notifier(&chardev_machine_done_notify); |
d654f34e AL |
1168 | } |
1169 | ||
1170 | type_init(register_types); |