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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" |
0b8fa32f | 38 | #include "qemu/module.h" |
922a01a0 | 39 | #include "qemu/option.h" |
1e419ee6 | 40 | #include "qemu/id.h" |
2158fa1b | 41 | #include "qemu/coroutine.h" |
6f97dba0 | 42 | |
8228e353 | 43 | #include "chardev/char-mux.h" |
df85a78b | 44 | |
6f97dba0 AL |
45 | /***********************************************************/ |
46 | /* character device */ | |
47 | ||
2f5d45a1 MAL |
48 | static Object *get_chardevs_root(void) |
49 | { | |
50 | return container_get(object_get_root(), "/chardevs"); | |
51 | } | |
2970a6c9 | 52 | |
2fa9044a | 53 | static void chr_be_event(Chardev *s, QEMUChrEvent event) |
6f97dba0 | 54 | { |
a4afa548 MAL |
55 | CharBackend *be = s->be; |
56 | ||
d09c4a47 MAL |
57 | if (!be || !be->chr_event) { |
58 | return; | |
59 | } | |
60 | ||
61 | be->chr_event(be->opaque, event); | |
62 | } | |
63 | ||
2fa9044a | 64 | void qemu_chr_be_event(Chardev *s, QEMUChrEvent event) |
d09c4a47 | 65 | { |
73cdf3f2 AG |
66 | /* Keep track if the char device is open */ |
67 | switch (event) { | |
68 | case CHR_EVENT_OPENED: | |
16665b94 | 69 | s->be_open = 1; |
73cdf3f2 AG |
70 | break; |
71 | case CHR_EVENT_CLOSED: | |
16665b94 | 72 | s->be_open = 0; |
73cdf3f2 | 73 | break; |
71f8d3b0 PMD |
74 | case CHR_EVENT_BREAK: |
75 | case CHR_EVENT_MUX_IN: | |
76 | case CHR_EVENT_MUX_OUT: | |
77 | /* Ignore */ | |
78 | break; | |
73cdf3f2 AG |
79 | } |
80 | ||
d09c4a47 | 81 | CHARDEV_GET_CLASS(s)->chr_be_event(s, event); |
6f97dba0 AL |
82 | } |
83 | ||
d0d7708b DB |
84 | /* Not reporting errors from writing to logfile, as logs are |
85 | * defined to be "best effort" only */ | |
a9b1ca38 | 86 | static void qemu_chr_write_log(Chardev *s, const uint8_t *buf, size_t len) |
d0d7708b DB |
87 | { |
88 | size_t done = 0; | |
89 | ssize_t ret; | |
90 | ||
91 | if (s->logfd < 0) { | |
92 | return; | |
93 | } | |
94 | ||
95 | while (done < len) { | |
53628efb DB |
96 | retry: |
97 | ret = write(s->logfd, buf + done, len - done); | |
98 | if (ret == -1 && errno == EAGAIN) { | |
99 | g_usleep(100); | |
100 | goto retry; | |
101 | } | |
d0d7708b DB |
102 | |
103 | if (ret <= 0) { | |
104 | return; | |
105 | } | |
106 | done += ret; | |
107 | } | |
108 | } | |
109 | ||
a9b1ca38 MAL |
110 | static int qemu_chr_write_buffer(Chardev *s, |
111 | const uint8_t *buf, int len, | |
112 | int *offset, bool write_all) | |
33577b47 | 113 | { |
777357d7 | 114 | ChardevClass *cc = CHARDEV_GET_CLASS(s); |
33577b47 PD |
115 | int res = 0; |
116 | *offset = 0; | |
117 | ||
118 | qemu_mutex_lock(&s->chr_write_lock); | |
119 | while (*offset < len) { | |
53628efb | 120 | retry: |
777357d7 | 121 | res = cc->chr_write(s, buf + *offset, len - *offset); |
c90e9392 | 122 | if (res < 0 && errno == EAGAIN && write_all) { |
2158fa1b LS |
123 | if (qemu_in_coroutine()) { |
124 | qemu_co_sleep_ns(QEMU_CLOCK_REALTIME, 100000); | |
125 | } else { | |
126 | g_usleep(100); | |
127 | } | |
53628efb DB |
128 | goto retry; |
129 | } | |
33577b47 PD |
130 | |
131 | if (res <= 0) { | |
132 | break; | |
133 | } | |
134 | ||
135 | *offset += res; | |
c90e9392 MAL |
136 | if (!write_all) { |
137 | break; | |
138 | } | |
33577b47 PD |
139 | } |
140 | if (*offset > 0) { | |
a9b1ca38 | 141 | qemu_chr_write_log(s, buf, *offset); |
33577b47 PD |
142 | } |
143 | qemu_mutex_unlock(&s->chr_write_lock); | |
144 | ||
145 | return res; | |
146 | } | |
147 | ||
4d43a603 | 148 | int qemu_chr_write(Chardev *s, const uint8_t *buf, int len, bool write_all) |
cd18720a | 149 | { |
c90e9392 | 150 | int offset = 0; |
33577b47 | 151 | int res; |
cd18720a | 152 | |
5ebd6703 | 153 | if (qemu_chr_replay(s) && replay_mode == REPLAY_MODE_PLAY) { |
33577b47 PD |
154 | replay_char_write_event_load(&res, &offset); |
155 | assert(offset <= len); | |
a9b1ca38 | 156 | qemu_chr_write_buffer(s, buf, offset, &offset, true); |
33577b47 PD |
157 | return res; |
158 | } | |
cd18720a | 159 | |
a9b1ca38 | 160 | res = qemu_chr_write_buffer(s, buf, len, &offset, write_all); |
cd18720a | 161 | |
5ebd6703 | 162 | if (qemu_chr_replay(s) && replay_mode == REPLAY_MODE_RECORD) { |
33577b47 | 163 | replay_char_write_event_save(res, offset); |
cd18720a AL |
164 | } |
165 | ||
9005b2a7 PB |
166 | if (res < 0) { |
167 | return res; | |
168 | } | |
cd18720a AL |
169 | return offset; |
170 | } | |
171 | ||
0ec7b3e7 | 172 | int qemu_chr_be_can_write(Chardev *s) |
6f97dba0 | 173 | { |
a4afa548 MAL |
174 | CharBackend *be = s->be; |
175 | ||
176 | if (!be || !be->chr_can_read) { | |
6f97dba0 | 177 | return 0; |
a4afa548 MAL |
178 | } |
179 | ||
180 | return be->chr_can_read(be->opaque); | |
6f97dba0 AL |
181 | } |
182 | ||
0ec7b3e7 | 183 | void qemu_chr_be_write_impl(Chardev *s, uint8_t *buf, int len) |
6f97dba0 | 184 | { |
a4afa548 MAL |
185 | CharBackend *be = s->be; |
186 | ||
187 | if (be && be->chr_read) { | |
188 | be->chr_read(be->opaque, buf, len); | |
ac310734 | 189 | } |
6f97dba0 AL |
190 | } |
191 | ||
0ec7b3e7 | 192 | void qemu_chr_be_write(Chardev *s, uint8_t *buf, int len) |
33577b47 | 193 | { |
5ebd6703 | 194 | if (qemu_chr_replay(s)) { |
33577b47 PD |
195 | if (replay_mode == REPLAY_MODE_PLAY) { |
196 | return; | |
197 | } | |
198 | replay_chr_be_write(s, buf, len); | |
199 | } else { | |
200 | qemu_chr_be_write_impl(s, buf, len); | |
201 | } | |
202 | } | |
203 | ||
07241c20 PX |
204 | void qemu_chr_be_update_read_handlers(Chardev *s, |
205 | GMainContext *context) | |
206 | { | |
207 | ChardevClass *cc = CHARDEV_GET_CLASS(s); | |
208 | ||
9ac3788b MAL |
209 | assert(qemu_chr_has_feature(s, QEMU_CHAR_FEATURE_GCONTEXT) |
210 | || !context); | |
95eeeba6 | 211 | s->gcontext = context; |
07241c20 | 212 | if (cc->chr_update_read_handler) { |
bb86d05f | 213 | cc->chr_update_read_handler(s); |
07241c20 PX |
214 | } |
215 | } | |
216 | ||
0ec7b3e7 | 217 | int qemu_chr_add_client(Chardev *s, int fd) |
13661089 | 218 | { |
777357d7 MAL |
219 | return CHARDEV_GET_CLASS(s)->chr_add_client ? |
220 | CHARDEV_GET_CLASS(s)->chr_add_client(s, fd) : -1; | |
13661089 DB |
221 | } |
222 | ||
777357d7 MAL |
223 | static void qemu_char_open(Chardev *chr, ChardevBackend *backend, |
224 | bool *be_opened, Error **errp) | |
6f97dba0 | 225 | { |
777357d7 MAL |
226 | ChardevClass *cc = CHARDEV_GET_CLASS(chr); |
227 | /* Any ChardevCommon member would work */ | |
228 | ChardevCommon *common = backend ? backend->u.null.data : NULL; | |
229 | ||
230 | if (common && common->has_logfile) { | |
231 | int flags = O_WRONLY | O_CREAT; | |
232 | if (common->has_logappend && | |
233 | common->logappend) { | |
234 | flags |= O_APPEND; | |
235 | } else { | |
236 | flags |= O_TRUNC; | |
237 | } | |
238 | chr->logfd = qemu_open(common->logfile, flags, 0666); | |
239 | if (chr->logfd < 0) { | |
240 | error_setg_errno(errp, errno, | |
241 | "Unable to open logfile %s", | |
242 | common->logfile); | |
243 | return; | |
244 | } | |
245 | } | |
246 | ||
247 | if (cc->open) { | |
248 | cc->open(chr, backend, be_opened, errp); | |
249 | } | |
6f97dba0 AL |
250 | } |
251 | ||
777357d7 | 252 | static void char_init(Object *obj) |
6f97dba0 | 253 | { |
777357d7 | 254 | Chardev *chr = CHARDEV(obj); |
6f97dba0 | 255 | |
777357d7 MAL |
256 | chr->logfd = -1; |
257 | qemu_mutex_init(&chr->chr_write_lock); | |
9ac3788b MAL |
258 | |
259 | /* | |
260 | * Assume if chr_update_read_handler is implemented it will | |
261 | * take the updated gcontext into account. | |
262 | */ | |
263 | if (CHARDEV_GET_CLASS(chr)->chr_update_read_handler) { | |
264 | qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_GCONTEXT); | |
265 | } | |
266 | ||
777357d7 MAL |
267 | } |
268 | ||
eb314a94 MAL |
269 | static int null_chr_write(Chardev *chr, const uint8_t *buf, int len) |
270 | { | |
271 | return len; | |
272 | } | |
273 | ||
274 | static void char_class_init(ObjectClass *oc, void *data) | |
275 | { | |
276 | ChardevClass *cc = CHARDEV_CLASS(oc); | |
277 | ||
278 | cc->chr_write = null_chr_write; | |
d09c4a47 | 279 | cc->chr_be_event = chr_be_event; |
eb314a94 MAL |
280 | } |
281 | ||
777357d7 MAL |
282 | static void char_finalize(Object *obj) |
283 | { | |
284 | Chardev *chr = CHARDEV(obj); | |
285 | ||
286 | if (chr->be) { | |
287 | chr->be->chr = NULL; | |
288 | } | |
289 | g_free(chr->filename); | |
290 | g_free(chr->label); | |
291 | if (chr->logfd != -1) { | |
292 | close(chr->logfd); | |
d0d7708b | 293 | } |
777357d7 MAL |
294 | qemu_mutex_destroy(&chr->chr_write_lock); |
295 | } | |
296 | ||
297 | static const TypeInfo char_type_info = { | |
298 | .name = TYPE_CHARDEV, | |
299 | .parent = TYPE_OBJECT, | |
300 | .instance_size = sizeof(Chardev), | |
301 | .instance_init = char_init, | |
302 | .instance_finalize = char_finalize, | |
303 | .abstract = true, | |
304 | .class_size = sizeof(ChardevClass), | |
eb314a94 | 305 | .class_init = char_class_init, |
777357d7 MAL |
306 | }; |
307 | ||
c7278b43 | 308 | static int chardev_machine_done_notify_one(Object *child, void *opaque) |
7b7ab18d | 309 | { |
c7278b43 PX |
310 | Chardev *chr = (Chardev *)child; |
311 | ChardevClass *class = CHARDEV_GET_CLASS(chr); | |
312 | ||
313 | if (class->chr_machine_done) { | |
314 | return class->chr_machine_done(chr); | |
6061162e | 315 | } |
7b7ab18d | 316 | |
6061162e MAL |
317 | return 0; |
318 | } | |
7b7ab18d | 319 | |
c7278b43 | 320 | static void chardev_machine_done_hook(Notifier *notifier, void *unused) |
6061162e | 321 | { |
c7278b43 PX |
322 | int ret = object_child_foreach(get_chardevs_root(), |
323 | chardev_machine_done_notify_one, NULL); | |
324 | ||
325 | if (ret) { | |
326 | error_report("Failed to call chardev machine_done hooks"); | |
327 | exit(1); | |
328 | } | |
7b7ab18d MR |
329 | } |
330 | ||
c7278b43 PX |
331 | static Notifier chardev_machine_done_notify = { |
332 | .notify = chardev_machine_done_hook, | |
7b7ab18d MR |
333 | }; |
334 | ||
0ec7b3e7 | 335 | static bool qemu_chr_is_busy(Chardev *s) |
a4afa548 | 336 | { |
777357d7 MAL |
337 | if (CHARDEV_IS_MUX(s)) { |
338 | MuxChardev *d = MUX_CHARDEV(s); | |
a4afa548 MAL |
339 | return d->mux_cnt >= 0; |
340 | } else { | |
341 | return s->be != NULL; | |
342 | } | |
343 | } | |
344 | ||
d24ca4b8 | 345 | int qemu_chr_wait_connected(Chardev *chr, Error **errp) |
6b6723c3 | 346 | { |
777357d7 MAL |
347 | ChardevClass *cc = CHARDEV_GET_CLASS(chr); |
348 | ||
349 | if (cc->chr_wait_connected) { | |
350 | return cc->chr_wait_connected(chr, errp); | |
6b6723c3 MAL |
351 | } |
352 | ||
353 | return 0; | |
354 | } | |
355 | ||
95e30b2a MAL |
356 | QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename, |
357 | bool permit_mux_mon) | |
191bc01b | 358 | { |
6ea314d9 | 359 | char host[65], port[33], width[8], height[8]; |
aeb2c47a | 360 | int pos; |
7d31544f | 361 | const char *p; |
191bc01b | 362 | QemuOpts *opts; |
8be7e7e4 | 363 | Error *local_err = NULL; |
191bc01b | 364 | |
8be7e7e4 | 365 | opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err); |
84d18f06 | 366 | if (local_err) { |
33394884 | 367 | error_report_err(local_err); |
191bc01b | 368 | return NULL; |
8be7e7e4 | 369 | } |
191bc01b | 370 | |
7591c5c1 | 371 | if (strstart(filename, "mon:", &p)) { |
95e30b2a MAL |
372 | if (!permit_mux_mon) { |
373 | error_report("mon: isn't supported in this context"); | |
374 | return NULL; | |
375 | } | |
7591c5c1 | 376 | filename = p; |
f43e47db | 377 | qemu_opt_set(opts, "mux", "on", &error_abort); |
02c4bdf1 PB |
378 | if (strcmp(filename, "stdio") == 0) { |
379 | /* Monitor is muxed to stdio: do not exit on Ctrl+C by default | |
380 | * but pass it to the guest. Handle this only for compat syntax, | |
381 | * for -chardev syntax we have special option for this. | |
382 | * This is what -nographic did, redirecting+muxing serial+monitor | |
383 | * to stdio causing Ctrl+C to be passed to guest. */ | |
f43e47db | 384 | qemu_opt_set(opts, "signal", "off", &error_abort); |
02c4bdf1 | 385 | } |
7591c5c1 GH |
386 | } |
387 | ||
f0457e8d GH |
388 | if (strcmp(filename, "null") == 0 || |
389 | strcmp(filename, "pty") == 0 || | |
390 | strcmp(filename, "msmouse") == 0 || | |
378af961 | 391 | strcmp(filename, "wctablet") == 0 || |
dc1c21e6 | 392 | strcmp(filename, "braille") == 0 || |
5692399f | 393 | strcmp(filename, "testdev") == 0 || |
f0457e8d | 394 | strcmp(filename, "stdio") == 0) { |
f43e47db | 395 | qemu_opt_set(opts, "backend", filename, &error_abort); |
191bc01b GH |
396 | return opts; |
397 | } | |
6ea314d9 | 398 | if (strstart(filename, "vc", &p)) { |
f43e47db | 399 | qemu_opt_set(opts, "backend", "vc", &error_abort); |
6ea314d9 | 400 | if (*p == ':') { |
49aa4058 | 401 | if (sscanf(p+1, "%7[0-9]x%7[0-9]", width, height) == 2) { |
6ea314d9 | 402 | /* pixels */ |
f43e47db MA |
403 | qemu_opt_set(opts, "width", width, &error_abort); |
404 | qemu_opt_set(opts, "height", height, &error_abort); | |
49aa4058 | 405 | } else if (sscanf(p+1, "%7[0-9]Cx%7[0-9]C", width, height) == 2) { |
6ea314d9 | 406 | /* chars */ |
f43e47db MA |
407 | qemu_opt_set(opts, "cols", width, &error_abort); |
408 | qemu_opt_set(opts, "rows", height, &error_abort); | |
6ea314d9 GH |
409 | } else { |
410 | goto fail; | |
411 | } | |
412 | } | |
413 | return opts; | |
414 | } | |
d6c983cd | 415 | if (strcmp(filename, "con:") == 0) { |
f43e47db | 416 | qemu_opt_set(opts, "backend", "console", &error_abort); |
d6c983cd GH |
417 | return opts; |
418 | } | |
48b76496 | 419 | if (strstart(filename, "COM", NULL)) { |
f43e47db MA |
420 | qemu_opt_set(opts, "backend", "serial", &error_abort); |
421 | qemu_opt_set(opts, "path", filename, &error_abort); | |
48b76496 GH |
422 | return opts; |
423 | } | |
7d31544f | 424 | if (strstart(filename, "file:", &p)) { |
f43e47db MA |
425 | qemu_opt_set(opts, "backend", "file", &error_abort); |
426 | qemu_opt_set(opts, "path", p, &error_abort); | |
7d31544f GH |
427 | return opts; |
428 | } | |
429 | if (strstart(filename, "pipe:", &p)) { | |
f43e47db MA |
430 | qemu_opt_set(opts, "backend", "pipe", &error_abort); |
431 | qemu_opt_set(opts, "path", p, &error_abort); | |
7d31544f GH |
432 | return opts; |
433 | } | |
aeb2c47a | 434 | if (strstart(filename, "tcp:", &p) || |
ae92cbd5 | 435 | strstart(filename, "telnet:", &p) || |
981b06e7 JS |
436 | strstart(filename, "tn3270:", &p) || |
437 | strstart(filename, "websocket:", &p)) { | |
aeb2c47a GH |
438 | if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) { |
439 | host[0] = 0; | |
440 | if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) | |
441 | goto fail; | |
442 | } | |
f43e47db MA |
443 | qemu_opt_set(opts, "backend", "socket", &error_abort); |
444 | qemu_opt_set(opts, "host", host, &error_abort); | |
445 | qemu_opt_set(opts, "port", port, &error_abort); | |
aeb2c47a | 446 | if (p[pos] == ',') { |
dc523cd3 MA |
447 | qemu_opts_do_parse(opts, p+pos+1, NULL, &local_err); |
448 | if (local_err) { | |
449 | error_report_err(local_err); | |
aeb2c47a | 450 | goto fail; |
dc523cd3 | 451 | } |
aeb2c47a | 452 | } |
ae92cbd5 | 453 | if (strstart(filename, "telnet:", &p)) { |
f43e47db | 454 | qemu_opt_set(opts, "telnet", "on", &error_abort); |
ae92cbd5 JL |
455 | } else if (strstart(filename, "tn3270:", &p)) { |
456 | qemu_opt_set(opts, "tn3270", "on", &error_abort); | |
981b06e7 JS |
457 | } else if (strstart(filename, "websocket:", &p)) { |
458 | qemu_opt_set(opts, "websocket", "on", &error_abort); | |
ae92cbd5 | 459 | } |
aeb2c47a GH |
460 | return opts; |
461 | } | |
7e1b35b4 | 462 | if (strstart(filename, "udp:", &p)) { |
f43e47db | 463 | qemu_opt_set(opts, "backend", "udp", &error_abort); |
7e1b35b4 GH |
464 | if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) { |
465 | host[0] = 0; | |
39324ca4 | 466 | if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) { |
7e1b35b4 GH |
467 | goto fail; |
468 | } | |
469 | } | |
f43e47db MA |
470 | qemu_opt_set(opts, "host", host, &error_abort); |
471 | qemu_opt_set(opts, "port", port, &error_abort); | |
7e1b35b4 GH |
472 | if (p[pos] == '@') { |
473 | p += pos + 1; | |
474 | if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) { | |
475 | host[0] = 0; | |
476 | if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) { | |
7e1b35b4 GH |
477 | goto fail; |
478 | } | |
479 | } | |
f43e47db MA |
480 | qemu_opt_set(opts, "localaddr", host, &error_abort); |
481 | qemu_opt_set(opts, "localport", port, &error_abort); | |
7e1b35b4 GH |
482 | } |
483 | return opts; | |
484 | } | |
aeb2c47a | 485 | if (strstart(filename, "unix:", &p)) { |
f43e47db | 486 | qemu_opt_set(opts, "backend", "socket", &error_abort); |
dc523cd3 MA |
487 | qemu_opts_do_parse(opts, p, "path", &local_err); |
488 | if (local_err) { | |
489 | error_report_err(local_err); | |
aeb2c47a | 490 | goto fail; |
dc523cd3 | 491 | } |
aeb2c47a GH |
492 | return opts; |
493 | } | |
48b76496 GH |
494 | if (strstart(filename, "/dev/parport", NULL) || |
495 | strstart(filename, "/dev/ppi", NULL)) { | |
73119c28 | 496 | qemu_opt_set(opts, "backend", "parallel", &error_abort); |
f43e47db | 497 | qemu_opt_set(opts, "path", filename, &error_abort); |
48b76496 GH |
498 | return opts; |
499 | } | |
500 | if (strstart(filename, "/dev/", NULL)) { | |
73119c28 | 501 | qemu_opt_set(opts, "backend", "serial", &error_abort); |
f43e47db | 502 | qemu_opt_set(opts, "path", filename, &error_abort); |
48b76496 GH |
503 | return opts; |
504 | } | |
191bc01b | 505 | |
0bf62dc8 DB |
506 | error_report("'%s' is not a valid char driver", filename); |
507 | ||
aeb2c47a | 508 | fail: |
191bc01b GH |
509 | qemu_opts_del(opts); |
510 | return NULL; | |
511 | } | |
512 | ||
21a933ea | 513 | void qemu_chr_parse_common(QemuOpts *opts, ChardevCommon *backend) |
d0d7708b DB |
514 | { |
515 | const char *logfile = qemu_opt_get(opts, "logfile"); | |
516 | ||
517 | backend->has_logfile = logfile != NULL; | |
e1f98fe4 | 518 | backend->logfile = g_strdup(logfile); |
d0d7708b DB |
519 | |
520 | backend->has_logappend = true; | |
521 | backend->logappend = qemu_opt_get_bool(opts, "logappend", false); | |
522 | } | |
523 | ||
88cace9f MAL |
524 | static const ChardevClass *char_get_class(const char *driver, Error **errp) |
525 | { | |
526 | ObjectClass *oc; | |
527 | const ChardevClass *cc; | |
528 | char *typename = g_strdup_printf("chardev-%s", driver); | |
529 | ||
ef138c77 | 530 | oc = module_object_class_by_name(typename); |
88cace9f MAL |
531 | g_free(typename); |
532 | ||
533 | if (!object_class_dynamic_cast(oc, TYPE_CHARDEV)) { | |
534 | error_setg(errp, "'%s' is not a valid char driver name", driver); | |
535 | return NULL; | |
536 | } | |
d654f34e | 537 | |
88cace9f MAL |
538 | if (object_class_is_abstract(oc)) { |
539 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "driver", | |
540 | "abstract device type"); | |
541 | return NULL; | |
542 | } | |
543 | ||
544 | cc = CHARDEV_CLASS(oc); | |
545 | if (cc->internal) { | |
546 | error_setg(errp, "'%s' is not a valid char driver name", driver); | |
547 | return NULL; | |
548 | } | |
549 | ||
550 | return cc; | |
551 | } | |
552 | ||
553 | static const struct ChardevAlias { | |
554 | const char *typename; | |
555 | const char *alias; | |
556 | } chardev_alias_table[] = { | |
557 | #ifdef HAVE_CHARDEV_PARPORT | |
558 | { "parallel", "parport" }, | |
559 | #endif | |
560 | #ifdef HAVE_CHARDEV_SERIAL | |
561 | { "serial", "tty" }, | |
562 | #endif | |
563 | }; | |
564 | ||
565 | typedef struct ChadevClassFE { | |
566 | void (*fn)(const char *name, void *opaque); | |
567 | void *opaque; | |
568 | } ChadevClassFE; | |
569 | ||
570 | static void | |
571 | chardev_class_foreach(ObjectClass *klass, void *opaque) | |
2c5f4882 | 572 | { |
88cace9f MAL |
573 | ChadevClassFE *fe = opaque; |
574 | ||
575 | assert(g_str_has_prefix(object_class_get_name(klass), "chardev-")); | |
576 | if (CHARDEV_CLASS(klass)->internal) { | |
577 | return; | |
578 | } | |
579 | ||
580 | fe->fn(object_class_get_name(klass) + 8, fe->opaque); | |
581 | } | |
582 | ||
583 | static void | |
584 | chardev_name_foreach(void (*fn)(const char *name, void *opaque), void *opaque) | |
585 | { | |
586 | ChadevClassFE fe = { .fn = fn, .opaque = opaque }; | |
587 | int i; | |
588 | ||
589 | object_class_foreach(chardev_class_foreach, TYPE_CHARDEV, false, &fe); | |
590 | ||
c7e47c63 | 591 | for (i = 0; i < (int)ARRAY_SIZE(chardev_alias_table); i++) { |
88cace9f MAL |
592 | fn(chardev_alias_table[i].alias, opaque); |
593 | } | |
594 | } | |
595 | ||
596 | static void | |
597 | help_string_append(const char *name, void *opaque) | |
598 | { | |
599 | GString *str = opaque; | |
600 | ||
8513ec28 | 601 | g_string_append_printf(str, "\n %s", name); |
2c5f4882 GH |
602 | } |
603 | ||
313e45b5 AN |
604 | static const char *chardev_alias_translate(const char *name) |
605 | { | |
606 | int i; | |
607 | for (i = 0; i < (int)ARRAY_SIZE(chardev_alias_table); i++) { | |
608 | if (g_strcmp0(chardev_alias_table[i].alias, name) == 0) { | |
609 | return chardev_alias_table[i].typename; | |
610 | } | |
611 | } | |
612 | return name; | |
613 | } | |
614 | ||
75b60160 | 615 | ChardevBackend *qemu_chr_parse_opts(QemuOpts *opts, Error **errp) |
191bc01b | 616 | { |
0aff637e | 617 | Error *local_err = NULL; |
88cace9f | 618 | const ChardevClass *cc; |
0b663b7d | 619 | ChardevBackend *backend = NULL; |
313e45b5 | 620 | const char *name = chardev_alias_translate(qemu_opt_get(opts, "backend")); |
191bc01b | 621 | |
0b812f31 | 622 | if (name == NULL) { |
312fd5f2 | 623 | error_setg(errp, "chardev: \"%s\" missing backend", |
bd2d80b2 | 624 | qemu_opts_id(opts)); |
0b663b7d | 625 | return NULL; |
1bbd185f | 626 | } |
517b3d40 | 627 | |
313e45b5 AN |
628 | cc = char_get_class(name, errp); |
629 | if (cc == NULL) { | |
630 | return NULL; | |
631 | } | |
632 | ||
633 | backend = g_new0(ChardevBackend, 1); | |
634 | backend->type = CHARDEV_BACKEND_KIND_NULL; | |
635 | ||
636 | if (cc->parse) { | |
637 | cc->parse(opts, backend, &local_err); | |
638 | if (local_err) { | |
639 | error_propagate(errp, local_err); | |
640 | qapi_free_ChardevBackend(backend); | |
641 | return NULL; | |
642 | } | |
643 | } else { | |
644 | ChardevCommon *ccom = g_new0(ChardevCommon, 1); | |
645 | qemu_chr_parse_common(opts, ccom); | |
646 | backend->u.null.data = ccom; /* Any ChardevCommon member would work */ | |
647 | } | |
648 | ||
649 | return backend; | |
650 | } | |
651 | ||
4ad6f6cb PB |
652 | Chardev *qemu_chr_new_from_opts(QemuOpts *opts, GMainContext *context, |
653 | Error **errp) | |
313e45b5 AN |
654 | { |
655 | const ChardevClass *cc; | |
656 | Chardev *chr = NULL; | |
657 | ChardevBackend *backend = NULL; | |
658 | const char *name = chardev_alias_translate(qemu_opt_get(opts, "backend")); | |
659 | const char *id = qemu_opts_id(opts); | |
660 | char *bid = NULL; | |
661 | ||
662 | if (name && is_help_option(name)) { | |
776a32a0 | 663 | GString *str = g_string_new(""); |
88cace9f MAL |
664 | |
665 | chardev_name_foreach(help_string_append, str); | |
776a32a0 | 666 | |
ef2fd6f1 | 667 | qemu_printf("Available chardev backend types: %s\n", str->str); |
776a32a0 | 668 | g_string_free(str, true); |
0ec846bf | 669 | return NULL; |
517b3d40 LM |
670 | } |
671 | ||
672 | if (id == NULL) { | |
673 | error_setg(errp, "chardev: no id specified"); | |
0b663b7d | 674 | return NULL; |
517b3d40 LM |
675 | } |
676 | ||
313e45b5 AN |
677 | backend = qemu_chr_parse_opts(opts, errp); |
678 | if (backend == NULL) { | |
679 | return NULL; | |
191bc01b | 680 | } |
88cace9f MAL |
681 | |
682 | cc = char_get_class(name, errp); | |
683 | if (cc == NULL) { | |
313e45b5 | 684 | goto out; |
191bc01b GH |
685 | } |
686 | ||
a61ae7f8 PM |
687 | if (qemu_opt_get_bool(opts, "mux", 0)) { |
688 | bid = g_strdup_printf("%s-base", id); | |
689 | } | |
2c5f4882 | 690 | |
c5749f7c | 691 | chr = qemu_chardev_new(bid ? bid : id, |
0b663b7d | 692 | object_class_get_name(OBJECT_CLASS(cc)), |
4ad6f6cb | 693 | backend, context, errp); |
c5749f7c | 694 | |
0b663b7d MAL |
695 | if (chr == NULL) { |
696 | goto out; | |
191bc01b GH |
697 | } |
698 | ||
a61ae7f8 | 699 | if (bid) { |
0b663b7d | 700 | Chardev *mux; |
a61ae7f8 | 701 | qapi_free_ChardevBackend(backend); |
a61ae7f8 | 702 | backend = g_new0(ChardevBackend, 1); |
130257dc | 703 | backend->type = CHARDEV_BACKEND_KIND_MUX; |
0b663b7d | 704 | backend->u.mux.data = g_new0(ChardevMux, 1); |
32bafa8f | 705 | backend->u.mux.data->chardev = g_strdup(bid); |
4ad6f6cb | 706 | mux = qemu_chardev_new(id, TYPE_CHARDEV_MUX, backend, context, errp); |
0b663b7d | 707 | if (mux == NULL) { |
2f5d45a1 | 708 | object_unparent(OBJECT(chr)); |
a61ae7f8 | 709 | chr = NULL; |
0b663b7d | 710 | goto out; |
a61ae7f8 | 711 | } |
0b663b7d | 712 | chr = mux; |
bd5c51ee | 713 | } |
7591c5c1 | 714 | |
0b663b7d | 715 | out: |
a61ae7f8 | 716 | qapi_free_ChardevBackend(backend); |
a61ae7f8 | 717 | g_free(bid); |
191bc01b GH |
718 | return chr; |
719 | } | |
720 | ||
95e30b2a | 721 | Chardev *qemu_chr_new_noreplay(const char *label, const char *filename, |
4ad6f6cb | 722 | bool permit_mux_mon, GMainContext *context) |
6f97dba0 AL |
723 | { |
724 | const char *p; | |
0ec7b3e7 | 725 | Chardev *chr; |
191bc01b | 726 | QemuOpts *opts; |
bd2d80b2 | 727 | Error *err = NULL; |
191bc01b | 728 | |
c845f401 GH |
729 | if (strstart(filename, "chardev:", &p)) { |
730 | return qemu_chr_find(p); | |
731 | } | |
732 | ||
95e30b2a | 733 | opts = qemu_chr_parse_compat(label, filename, permit_mux_mon); |
7e1b35b4 GH |
734 | if (!opts) |
735 | return NULL; | |
6f97dba0 | 736 | |
4ad6f6cb | 737 | chr = qemu_chr_new_from_opts(opts, context, &err); |
95e30b2a | 738 | if (!chr) { |
565f65d2 | 739 | error_report_err(err); |
95e30b2a | 740 | goto out; |
bd2d80b2 | 741 | } |
95e30b2a MAL |
742 | |
743 | if (qemu_opt_get_bool(opts, "mux", 0)) { | |
744 | assert(permit_mux_mon); | |
8e9119a8 KW |
745 | monitor_init_hmp(chr, true, &err); |
746 | if (err) { | |
747 | error_report_err(err); | |
748 | object_unparent(OBJECT(chr)); | |
749 | chr = NULL; | |
750 | goto out; | |
751 | } | |
6f97dba0 | 752 | } |
95e30b2a MAL |
753 | |
754 | out: | |
0a73336d | 755 | qemu_opts_del(opts); |
6f97dba0 AL |
756 | return chr; |
757 | } | |
758 | ||
95e30b2a MAL |
759 | static Chardev *qemu_chr_new_permit_mux_mon(const char *label, |
760 | const char *filename, | |
4ad6f6cb PB |
761 | bool permit_mux_mon, |
762 | GMainContext *context) | |
33577b47 | 763 | { |
0ec7b3e7 | 764 | Chardev *chr; |
4ad6f6cb | 765 | chr = qemu_chr_new_noreplay(label, filename, permit_mux_mon, context); |
33577b47 | 766 | if (chr) { |
5ebd6703 MAL |
767 | if (replay_mode != REPLAY_MODE_NONE) { |
768 | qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_REPLAY); | |
769 | } | |
777357d7 | 770 | if (qemu_chr_replay(chr) && CHARDEV_GET_CLASS(chr)->chr_ioctl) { |
776a32a0 MAL |
771 | error_report("Replay: ioctl is not supported " |
772 | "for serial devices yet"); | |
33577b47 PD |
773 | } |
774 | replay_register_char_driver(chr); | |
775 | } | |
776 | return chr; | |
777 | } | |
778 | ||
4ad6f6cb PB |
779 | Chardev *qemu_chr_new(const char *label, const char *filename, |
780 | GMainContext *context) | |
95e30b2a | 781 | { |
4ad6f6cb | 782 | return qemu_chr_new_permit_mux_mon(label, filename, false, context); |
95e30b2a MAL |
783 | } |
784 | ||
4ad6f6cb PB |
785 | Chardev *qemu_chr_new_mux_mon(const char *label, const char *filename, |
786 | GMainContext *context) | |
95e30b2a | 787 | { |
4ad6f6cb | 788 | return qemu_chr_new_permit_mux_mon(label, filename, true, context); |
95e30b2a MAL |
789 | } |
790 | ||
6061162e | 791 | static int qmp_query_chardev_foreach(Object *obj, void *data) |
1ad78ea5 | 792 | { |
6061162e MAL |
793 | Chardev *chr = CHARDEV(obj); |
794 | ChardevInfoList **list = data; | |
795 | ChardevInfoList *info = g_malloc0(sizeof(*info)); | |
796 | ||
797 | info->value = g_malloc0(sizeof(*info->value)); | |
798 | info->value->label = g_strdup(chr->label); | |
799 | info->value->filename = g_strdup(chr->filename); | |
800 | info->value->frontend_open = chr->be && chr->be->fe_open; | |
801 | ||
802 | info->next = *list; | |
803 | *list = info; | |
804 | ||
805 | return 0; | |
1ad78ea5 MAL |
806 | } |
807 | ||
c5a415a0 | 808 | ChardevInfoList *qmp_query_chardev(Error **errp) |
6f97dba0 | 809 | { |
c5a415a0 | 810 | ChardevInfoList *chr_list = NULL; |
6f97dba0 | 811 | |
6061162e MAL |
812 | object_child_foreach(get_chardevs_root(), |
813 | qmp_query_chardev_foreach, &chr_list); | |
588b3832 | 814 | |
c5a415a0 | 815 | return chr_list; |
6f97dba0 | 816 | } |
c845f401 | 817 | |
88cace9f MAL |
818 | static void |
819 | qmp_prepend_backend(const char *name, void *opaque) | |
0b812f31 | 820 | { |
88cace9f | 821 | ChardevBackendInfoList **list = opaque; |
0b812f31 | 822 | ChardevBackendInfoList *info = g_malloc0(sizeof(*info)); |
88cace9f | 823 | |
0b812f31 MAL |
824 | info->value = g_malloc0(sizeof(*info->value)); |
825 | info->value->name = g_strdup(name); | |
88cace9f MAL |
826 | info->next = *list; |
827 | *list = info; | |
0b812f31 MAL |
828 | } |
829 | ||
77d1c3c6 MK |
830 | ChardevBackendInfoList *qmp_query_chardev_backends(Error **errp) |
831 | { | |
832 | ChardevBackendInfoList *backend_list = NULL; | |
a1698bf1 | 833 | |
88cace9f | 834 | chardev_name_foreach(qmp_prepend_backend, &backend_list); |
77d1c3c6 MK |
835 | |
836 | return backend_list; | |
837 | } | |
838 | ||
0ec7b3e7 | 839 | Chardev *qemu_chr_find(const char *name) |
c845f401 | 840 | { |
6061162e | 841 | Object *obj = object_resolve_path_component(get_chardevs_root(), name); |
c845f401 | 842 | |
6061162e | 843 | return obj ? CHARDEV(obj) : NULL; |
c845f401 | 844 | } |
0beb4942 | 845 | |
4d454574 PB |
846 | QemuOptsList qemu_chardev_opts = { |
847 | .name = "chardev", | |
848 | .implied_opt_name = "backend", | |
849 | .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head), | |
850 | .desc = { | |
851 | { | |
852 | .name = "backend", | |
853 | .type = QEMU_OPT_STRING, | |
854 | },{ | |
855 | .name = "path", | |
856 | .type = QEMU_OPT_STRING, | |
857 | },{ | |
858 | .name = "host", | |
859 | .type = QEMU_OPT_STRING, | |
860 | },{ | |
861 | .name = "port", | |
862 | .type = QEMU_OPT_STRING, | |
0935700f DB |
863 | },{ |
864 | .name = "fd", | |
865 | .type = QEMU_OPT_STRING, | |
4d454574 PB |
866 | },{ |
867 | .name = "localaddr", | |
868 | .type = QEMU_OPT_STRING, | |
869 | },{ | |
870 | .name = "localport", | |
871 | .type = QEMU_OPT_STRING, | |
872 | },{ | |
873 | .name = "to", | |
874 | .type = QEMU_OPT_NUMBER, | |
875 | },{ | |
876 | .name = "ipv4", | |
877 | .type = QEMU_OPT_BOOL, | |
878 | },{ | |
879 | .name = "ipv6", | |
880 | .type = QEMU_OPT_BOOL, | |
881 | },{ | |
882 | .name = "wait", | |
883 | .type = QEMU_OPT_BOOL, | |
884 | },{ | |
885 | .name = "server", | |
886 | .type = QEMU_OPT_BOOL, | |
887 | },{ | |
888 | .name = "delay", | |
889 | .type = QEMU_OPT_BOOL, | |
5dd1f02b CM |
890 | },{ |
891 | .name = "reconnect", | |
892 | .type = QEMU_OPT_NUMBER, | |
4d454574 PB |
893 | },{ |
894 | .name = "telnet", | |
895 | .type = QEMU_OPT_BOOL, | |
ae92cbd5 JL |
896 | },{ |
897 | .name = "tn3270", | |
898 | .type = QEMU_OPT_BOOL, | |
a8fb5427 DB |
899 | },{ |
900 | .name = "tls-creds", | |
901 | .type = QEMU_OPT_STRING, | |
fd4a5fd4 DB |
902 | },{ |
903 | .name = "tls-authz", | |
904 | .type = QEMU_OPT_STRING, | |
981b06e7 JS |
905 | },{ |
906 | .name = "websocket", | |
907 | .type = QEMU_OPT_BOOL, | |
4d454574 PB |
908 | },{ |
909 | .name = "width", | |
910 | .type = QEMU_OPT_NUMBER, | |
911 | },{ | |
912 | .name = "height", | |
913 | .type = QEMU_OPT_NUMBER, | |
914 | },{ | |
915 | .name = "cols", | |
916 | .type = QEMU_OPT_NUMBER, | |
917 | },{ | |
918 | .name = "rows", | |
919 | .type = QEMU_OPT_NUMBER, | |
920 | },{ | |
921 | .name = "mux", | |
922 | .type = QEMU_OPT_BOOL, | |
923 | },{ | |
924 | .name = "signal", | |
925 | .type = QEMU_OPT_BOOL, | |
926 | },{ | |
927 | .name = "name", | |
928 | .type = QEMU_OPT_STRING, | |
929 | },{ | |
930 | .name = "debug", | |
931 | .type = QEMU_OPT_NUMBER, | |
51767e7c | 932 | },{ |
3949e594 | 933 | .name = "size", |
de1cc36e | 934 | .type = QEMU_OPT_SIZE, |
bb6fb7c0 GH |
935 | },{ |
936 | .name = "chardev", | |
937 | .type = QEMU_OPT_STRING, | |
31e38a22 OK |
938 | },{ |
939 | .name = "append", | |
940 | .type = QEMU_OPT_BOOL, | |
d0d7708b DB |
941 | },{ |
942 | .name = "logfile", | |
943 | .type = QEMU_OPT_STRING, | |
944 | },{ | |
945 | .name = "logappend", | |
946 | .type = QEMU_OPT_BOOL, | |
776b97d3 XZ |
947 | },{ |
948 | .name = "tight", | |
949 | .type = QEMU_OPT_BOOL, | |
950 | .def_value_str = "on", | |
951 | },{ | |
952 | .name = "abstract", | |
953 | .type = QEMU_OPT_BOOL, | |
4d454574 PB |
954 | }, |
955 | { /* end of list */ } | |
956 | }, | |
957 | }; | |
f1a1a356 | 958 | |
0ec7b3e7 | 959 | bool qemu_chr_has_feature(Chardev *chr, |
279b066e | 960 | ChardevFeature feature) |
0a73336d DB |
961 | { |
962 | return test_bit(feature, chr->features); | |
963 | } | |
964 | ||
0ec7b3e7 | 965 | void qemu_chr_set_feature(Chardev *chr, |
279b066e | 966 | ChardevFeature feature) |
0a73336d DB |
967 | { |
968 | return set_bit(feature, chr->features); | |
969 | } | |
970 | ||
1e419ee6 MAL |
971 | static Chardev *chardev_new(const char *id, const char *typename, |
972 | ChardevBackend *backend, | |
973 | GMainContext *gcontext, | |
974 | Error **errp) | |
f1a1a356 | 975 | { |
2f5d45a1 | 976 | Object *obj; |
0ec7b3e7 | 977 | Chardev *chr = NULL; |
eaeba653 | 978 | Error *local_err = NULL; |
82878dac | 979 | bool be_opened = true; |
f1a1a356 | 980 | |
777357d7 | 981 | assert(g_str_has_prefix(typename, "chardev-")); |
f1a1a356 | 982 | |
2f5d45a1 MAL |
983 | obj = object_new(typename); |
984 | chr = CHARDEV(obj); | |
777357d7 | 985 | chr->label = g_strdup(id); |
4ad6f6cb | 986 | chr->gcontext = gcontext; |
4ca17281 | 987 | |
777357d7 | 988 | qemu_char_open(chr, backend, &be_opened, &local_err); |
a1698bf1 | 989 | if (local_err) { |
2f5d45a1 | 990 | goto end; |
eaeba653 PB |
991 | } |
992 | ||
eaeba653 | 993 | if (!chr->filename) { |
777357d7 | 994 | chr->filename = g_strdup(typename + 8); |
f1a1a356 | 995 | } |
82878dac | 996 | if (be_opened) { |
eaeba653 PB |
997 | qemu_chr_be_event(chr, CHR_EVENT_OPENED); |
998 | } | |
777357d7 | 999 | |
2f5d45a1 | 1000 | if (id) { |
d2623129 | 1001 | object_property_add_child(get_chardevs_root(), id, obj); |
2f5d45a1 MAL |
1002 | object_unref(obj); |
1003 | } | |
1004 | ||
1005 | end: | |
1006 | if (local_err) { | |
1007 | error_propagate(errp, local_err); | |
1008 | object_unref(obj); | |
1009 | return NULL; | |
1010 | } | |
1011 | ||
777357d7 MAL |
1012 | return chr; |
1013 | } | |
1014 | ||
1e419ee6 MAL |
1015 | Chardev *qemu_chardev_new(const char *id, const char *typename, |
1016 | ChardevBackend *backend, | |
1017 | GMainContext *gcontext, | |
1018 | Error **errp) | |
1019 | { | |
1020 | g_autofree char *genid = NULL; | |
1021 | ||
1022 | if (!id) { | |
1023 | genid = id_generate(ID_CHR); | |
1024 | id = genid; | |
1025 | } | |
1026 | ||
1027 | return chardev_new(id, typename, backend, gcontext, errp); | |
1028 | } | |
1029 | ||
777357d7 MAL |
1030 | ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend, |
1031 | Error **errp) | |
1032 | { | |
1033 | const ChardevClass *cc; | |
1034 | ChardevReturn *ret; | |
1035 | Chardev *chr; | |
1036 | ||
977c736f | 1037 | cc = char_get_class(ChardevBackendKind_str(backend->type), errp); |
777357d7 MAL |
1038 | if (!cc) { |
1039 | return NULL; | |
1040 | } | |
1041 | ||
1e419ee6 MAL |
1042 | chr = chardev_new(id, object_class_get_name(OBJECT_CLASS(cc)), |
1043 | backend, NULL, errp); | |
777357d7 MAL |
1044 | if (!chr) { |
1045 | return NULL; | |
1046 | } | |
1047 | ||
1048 | ret = g_new0(ChardevReturn, 1); | |
1049 | if (CHARDEV_IS_PTY(chr)) { | |
1050 | ret->pty = g_strdup(chr->filename + 4); | |
1051 | ret->has_pty = true; | |
1052 | } | |
1053 | ||
eaeba653 | 1054 | return ret; |
f1a1a356 GH |
1055 | } |
1056 | ||
7bb86085 AN |
1057 | ChardevReturn *qmp_chardev_change(const char *id, ChardevBackend *backend, |
1058 | Error **errp) | |
1059 | { | |
1060 | CharBackend *be; | |
1061 | const ChardevClass *cc; | |
1062 | Chardev *chr, *chr_new; | |
1063 | bool closed_sent = false; | |
1064 | ChardevReturn *ret; | |
1065 | ||
1066 | chr = qemu_chr_find(id); | |
1067 | if (!chr) { | |
1068 | error_setg(errp, "Chardev '%s' does not exist", id); | |
1069 | return NULL; | |
1070 | } | |
1071 | ||
1072 | if (CHARDEV_IS_MUX(chr)) { | |
1073 | error_setg(errp, "Mux device hotswap not supported yet"); | |
1074 | return NULL; | |
1075 | } | |
1076 | ||
1077 | if (qemu_chr_replay(chr)) { | |
1078 | error_setg(errp, | |
1079 | "Chardev '%s' cannot be changed in record/replay mode", id); | |
1080 | return NULL; | |
1081 | } | |
1082 | ||
1083 | be = chr->be; | |
1084 | if (!be) { | |
1085 | /* easy case */ | |
1086 | object_unparent(OBJECT(chr)); | |
1087 | return qmp_chardev_add(id, backend, errp); | |
1088 | } | |
1089 | ||
1090 | if (!be->chr_be_change) { | |
1091 | error_setg(errp, "Chardev user does not support chardev hotswap"); | |
1092 | return NULL; | |
1093 | } | |
1094 | ||
977c736f | 1095 | cc = char_get_class(ChardevBackendKind_str(backend->type), errp); |
7bb86085 AN |
1096 | if (!cc) { |
1097 | return NULL; | |
1098 | } | |
1099 | ||
1e419ee6 MAL |
1100 | chr_new = chardev_new(NULL, object_class_get_name(OBJECT_CLASS(cc)), |
1101 | backend, chr->gcontext, errp); | |
7bb86085 AN |
1102 | if (!chr_new) { |
1103 | return NULL; | |
1104 | } | |
1105 | chr_new->label = g_strdup(id); | |
1106 | ||
1107 | if (chr->be_open && !chr_new->be_open) { | |
1108 | qemu_chr_be_event(chr, CHR_EVENT_CLOSED); | |
1109 | closed_sent = true; | |
1110 | } | |
1111 | ||
1112 | chr->be = NULL; | |
1113 | qemu_chr_fe_init(be, chr_new, &error_abort); | |
1114 | ||
1115 | if (be->chr_be_change(be->opaque) < 0) { | |
1116 | error_setg(errp, "Chardev '%s' change failed", chr_new->label); | |
1117 | chr_new->be = NULL; | |
1118 | qemu_chr_fe_init(be, chr, &error_abort); | |
1119 | if (closed_sent) { | |
1120 | qemu_chr_be_event(chr, CHR_EVENT_OPENED); | |
1121 | } | |
1122 | object_unref(OBJECT(chr_new)); | |
1123 | return NULL; | |
1124 | } | |
1125 | ||
1126 | object_unparent(OBJECT(chr)); | |
1127 | object_property_add_child(get_chardevs_root(), chr_new->label, | |
d2623129 | 1128 | OBJECT(chr_new)); |
7bb86085 AN |
1129 | object_unref(OBJECT(chr_new)); |
1130 | ||
1131 | ret = g_new0(ChardevReturn, 1); | |
1132 | if (CHARDEV_IS_PTY(chr_new)) { | |
1133 | ret->pty = g_strdup(chr_new->filename + 4); | |
1134 | ret->has_pty = true; | |
1135 | } | |
1136 | ||
1137 | return ret; | |
1138 | } | |
1139 | ||
f1a1a356 GH |
1140 | void qmp_chardev_remove(const char *id, Error **errp) |
1141 | { | |
0ec7b3e7 | 1142 | Chardev *chr; |
f1a1a356 GH |
1143 | |
1144 | chr = qemu_chr_find(id); | |
8108fd3e | 1145 | if (chr == NULL) { |
f1a1a356 GH |
1146 | error_setg(errp, "Chardev '%s' not found", id); |
1147 | return; | |
1148 | } | |
a4afa548 | 1149 | if (qemu_chr_is_busy(chr)) { |
f1a1a356 GH |
1150 | error_setg(errp, "Chardev '%s' is busy", id); |
1151 | return; | |
1152 | } | |
5ebd6703 | 1153 | if (qemu_chr_replay(chr)) { |
33577b47 PD |
1154 | error_setg(errp, |
1155 | "Chardev '%s' cannot be unplugged in record/replay mode", id); | |
1156 | return; | |
1157 | } | |
2f5d45a1 | 1158 | object_unparent(OBJECT(chr)); |
f1a1a356 | 1159 | } |
d654f34e | 1160 | |
bd1d5ad9 SF |
1161 | void qmp_chardev_send_break(const char *id, Error **errp) |
1162 | { | |
1163 | Chardev *chr; | |
1164 | ||
1165 | chr = qemu_chr_find(id); | |
1166 | if (chr == NULL) { | |
1167 | error_setg(errp, "Chardev '%s' not found", id); | |
1168 | return; | |
1169 | } | |
1170 | qemu_chr_be_event(chr, CHR_EVENT_BREAK); | |
1171 | } | |
1172 | ||
2c716ba1 PX |
1173 | /* |
1174 | * Add a timeout callback for the chardev (in milliseconds), return | |
1175 | * the GSource object created. Please use this to add timeout hook for | |
1176 | * chardev instead of g_timeout_add() and g_timeout_add_seconds(), to | |
1177 | * make sure the gcontext that the task bound to is correct. | |
1178 | */ | |
1179 | GSource *qemu_chr_timeout_add_ms(Chardev *chr, guint ms, | |
1180 | GSourceFunc func, void *private) | |
1181 | { | |
1182 | GSource *source = g_timeout_source_new(ms); | |
1183 | ||
1184 | assert(func); | |
1185 | g_source_set_callback(source, func, private, NULL); | |
1186 | g_source_attach(source, chr->gcontext); | |
1187 | ||
1188 | return source; | |
1189 | } | |
1190 | ||
aa5cb7f5 | 1191 | void qemu_chr_cleanup(void) |
c1111a24 | 1192 | { |
2f5d45a1 | 1193 | object_unparent(get_chardevs_root()); |
c1111a24 MAL |
1194 | } |
1195 | ||
d654f34e AL |
1196 | static void register_types(void) |
1197 | { | |
88cace9f | 1198 | type_register_static(&char_type_info); |
0b812f31 | 1199 | |
7b7ab18d MR |
1200 | /* this must be done after machine init, since we register FEs with muxes |
1201 | * as part of realize functions like serial_isa_realizefn when -nographic | |
1202 | * is specified | |
1203 | */ | |
c7278b43 | 1204 | qemu_add_machine_init_done_notifier(&chardev_machine_done_notify); |
d654f34e AL |
1205 | } |
1206 | ||
1207 | type_init(register_types); |