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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" |
8228e353 | 31 | #include "chardev/char.h" |
c5a415a0 | 32 | #include "qmp-commands.h" |
cfb429cb | 33 | #include "qapi-visit.h" |
e688df6b | 34 | #include "qapi/error.h" |
33577b47 | 35 | #include "sysemu/replay.h" |
517b3d40 | 36 | #include "qemu/help_option.h" |
6f97dba0 | 37 | |
8228e353 | 38 | #include "chardev/char-mux.h" |
df85a78b | 39 | |
6f97dba0 AL |
40 | /***********************************************************/ |
41 | /* character device */ | |
42 | ||
2f5d45a1 MAL |
43 | static Object *get_chardevs_root(void) |
44 | { | |
45 | return container_get(object_get_root(), "/chardevs"); | |
46 | } | |
2970a6c9 | 47 | |
d09c4a47 | 48 | static void chr_be_event(Chardev *s, int event) |
6f97dba0 | 49 | { |
a4afa548 MAL |
50 | CharBackend *be = s->be; |
51 | ||
d09c4a47 MAL |
52 | if (!be || !be->chr_event) { |
53 | return; | |
54 | } | |
55 | ||
56 | be->chr_event(be->opaque, event); | |
57 | } | |
58 | ||
59 | void qemu_chr_be_event(Chardev *s, int event) | |
60 | { | |
73cdf3f2 AG |
61 | /* Keep track if the char device is open */ |
62 | switch (event) { | |
63 | case CHR_EVENT_OPENED: | |
16665b94 | 64 | s->be_open = 1; |
73cdf3f2 AG |
65 | break; |
66 | case CHR_EVENT_CLOSED: | |
16665b94 | 67 | s->be_open = 0; |
73cdf3f2 AG |
68 | break; |
69 | } | |
70 | ||
d09c4a47 | 71 | CHARDEV_GET_CLASS(s)->chr_be_event(s, event); |
6f97dba0 AL |
72 | } |
73 | ||
d0d7708b DB |
74 | /* Not reporting errors from writing to logfile, as logs are |
75 | * defined to be "best effort" only */ | |
a9b1ca38 | 76 | static void qemu_chr_write_log(Chardev *s, const uint8_t *buf, size_t len) |
d0d7708b DB |
77 | { |
78 | size_t done = 0; | |
79 | ssize_t ret; | |
80 | ||
81 | if (s->logfd < 0) { | |
82 | return; | |
83 | } | |
84 | ||
85 | while (done < len) { | |
53628efb DB |
86 | retry: |
87 | ret = write(s->logfd, buf + done, len - done); | |
88 | if (ret == -1 && errno == EAGAIN) { | |
89 | g_usleep(100); | |
90 | goto retry; | |
91 | } | |
d0d7708b DB |
92 | |
93 | if (ret <= 0) { | |
94 | return; | |
95 | } | |
96 | done += ret; | |
97 | } | |
98 | } | |
99 | ||
a9b1ca38 MAL |
100 | static int qemu_chr_write_buffer(Chardev *s, |
101 | const uint8_t *buf, int len, | |
102 | int *offset, bool write_all) | |
33577b47 | 103 | { |
777357d7 | 104 | ChardevClass *cc = CHARDEV_GET_CLASS(s); |
33577b47 PD |
105 | int res = 0; |
106 | *offset = 0; | |
107 | ||
108 | qemu_mutex_lock(&s->chr_write_lock); | |
109 | while (*offset < len) { | |
53628efb | 110 | retry: |
777357d7 | 111 | res = cc->chr_write(s, buf + *offset, len - *offset); |
c90e9392 | 112 | if (res < 0 && errno == EAGAIN && write_all) { |
53628efb DB |
113 | g_usleep(100); |
114 | goto retry; | |
115 | } | |
33577b47 PD |
116 | |
117 | if (res <= 0) { | |
118 | break; | |
119 | } | |
120 | ||
121 | *offset += res; | |
c90e9392 MAL |
122 | if (!write_all) { |
123 | break; | |
124 | } | |
33577b47 PD |
125 | } |
126 | if (*offset > 0) { | |
a9b1ca38 | 127 | qemu_chr_write_log(s, buf, *offset); |
33577b47 PD |
128 | } |
129 | qemu_mutex_unlock(&s->chr_write_lock); | |
130 | ||
131 | return res; | |
132 | } | |
133 | ||
4d43a603 | 134 | int qemu_chr_write(Chardev *s, const uint8_t *buf, int len, bool write_all) |
cd18720a | 135 | { |
c90e9392 | 136 | int offset = 0; |
33577b47 | 137 | int res; |
cd18720a | 138 | |
5ebd6703 | 139 | if (qemu_chr_replay(s) && replay_mode == REPLAY_MODE_PLAY) { |
33577b47 PD |
140 | replay_char_write_event_load(&res, &offset); |
141 | assert(offset <= len); | |
a9b1ca38 | 142 | qemu_chr_write_buffer(s, buf, offset, &offset, true); |
33577b47 PD |
143 | return res; |
144 | } | |
cd18720a | 145 | |
a9b1ca38 | 146 | res = qemu_chr_write_buffer(s, buf, len, &offset, write_all); |
cd18720a | 147 | |
5ebd6703 | 148 | if (qemu_chr_replay(s) && replay_mode == REPLAY_MODE_RECORD) { |
33577b47 | 149 | replay_char_write_event_save(res, offset); |
cd18720a AL |
150 | } |
151 | ||
9005b2a7 PB |
152 | if (res < 0) { |
153 | return res; | |
154 | } | |
cd18720a AL |
155 | return offset; |
156 | } | |
157 | ||
0ec7b3e7 | 158 | int qemu_chr_be_can_write(Chardev *s) |
6f97dba0 | 159 | { |
a4afa548 MAL |
160 | CharBackend *be = s->be; |
161 | ||
162 | if (!be || !be->chr_can_read) { | |
6f97dba0 | 163 | return 0; |
a4afa548 MAL |
164 | } |
165 | ||
166 | return be->chr_can_read(be->opaque); | |
6f97dba0 AL |
167 | } |
168 | ||
0ec7b3e7 | 169 | void qemu_chr_be_write_impl(Chardev *s, uint8_t *buf, int len) |
6f97dba0 | 170 | { |
a4afa548 MAL |
171 | CharBackend *be = s->be; |
172 | ||
173 | if (be && be->chr_read) { | |
174 | be->chr_read(be->opaque, buf, len); | |
ac310734 | 175 | } |
6f97dba0 AL |
176 | } |
177 | ||
0ec7b3e7 | 178 | void qemu_chr_be_write(Chardev *s, uint8_t *buf, int len) |
33577b47 | 179 | { |
5ebd6703 | 180 | if (qemu_chr_replay(s)) { |
33577b47 PD |
181 | if (replay_mode == REPLAY_MODE_PLAY) { |
182 | return; | |
183 | } | |
184 | replay_chr_be_write(s, buf, len); | |
185 | } else { | |
186 | qemu_chr_be_write_impl(s, buf, len); | |
187 | } | |
188 | } | |
189 | ||
07241c20 PX |
190 | void qemu_chr_be_update_read_handlers(Chardev *s, |
191 | GMainContext *context) | |
192 | { | |
193 | ChardevClass *cc = CHARDEV_GET_CLASS(s); | |
194 | ||
95eeeba6 | 195 | s->gcontext = context; |
07241c20 | 196 | if (cc->chr_update_read_handler) { |
bb86d05f | 197 | cc->chr_update_read_handler(s); |
07241c20 PX |
198 | } |
199 | } | |
200 | ||
0ec7b3e7 | 201 | int qemu_chr_add_client(Chardev *s, int fd) |
13661089 | 202 | { |
777357d7 MAL |
203 | return CHARDEV_GET_CLASS(s)->chr_add_client ? |
204 | CHARDEV_GET_CLASS(s)->chr_add_client(s, fd) : -1; | |
13661089 DB |
205 | } |
206 | ||
777357d7 MAL |
207 | static void qemu_char_open(Chardev *chr, ChardevBackend *backend, |
208 | bool *be_opened, Error **errp) | |
6f97dba0 | 209 | { |
777357d7 MAL |
210 | ChardevClass *cc = CHARDEV_GET_CLASS(chr); |
211 | /* Any ChardevCommon member would work */ | |
212 | ChardevCommon *common = backend ? backend->u.null.data : NULL; | |
213 | ||
214 | if (common && common->has_logfile) { | |
215 | int flags = O_WRONLY | O_CREAT; | |
216 | if (common->has_logappend && | |
217 | common->logappend) { | |
218 | flags |= O_APPEND; | |
219 | } else { | |
220 | flags |= O_TRUNC; | |
221 | } | |
222 | chr->logfd = qemu_open(common->logfile, flags, 0666); | |
223 | if (chr->logfd < 0) { | |
224 | error_setg_errno(errp, errno, | |
225 | "Unable to open logfile %s", | |
226 | common->logfile); | |
227 | return; | |
228 | } | |
229 | } | |
230 | ||
231 | if (cc->open) { | |
232 | cc->open(chr, backend, be_opened, errp); | |
233 | } | |
6f97dba0 AL |
234 | } |
235 | ||
777357d7 | 236 | static void char_init(Object *obj) |
6f97dba0 | 237 | { |
777357d7 | 238 | Chardev *chr = CHARDEV(obj); |
6f97dba0 | 239 | |
777357d7 MAL |
240 | chr->logfd = -1; |
241 | qemu_mutex_init(&chr->chr_write_lock); | |
242 | } | |
243 | ||
eb314a94 MAL |
244 | static int null_chr_write(Chardev *chr, const uint8_t *buf, int len) |
245 | { | |
246 | return len; | |
247 | } | |
248 | ||
249 | static void char_class_init(ObjectClass *oc, void *data) | |
250 | { | |
251 | ChardevClass *cc = CHARDEV_CLASS(oc); | |
252 | ||
253 | cc->chr_write = null_chr_write; | |
d09c4a47 | 254 | cc->chr_be_event = chr_be_event; |
eb314a94 MAL |
255 | } |
256 | ||
777357d7 MAL |
257 | static void char_finalize(Object *obj) |
258 | { | |
259 | Chardev *chr = CHARDEV(obj); | |
260 | ||
261 | if (chr->be) { | |
262 | chr->be->chr = NULL; | |
263 | } | |
264 | g_free(chr->filename); | |
265 | g_free(chr->label); | |
266 | if (chr->logfd != -1) { | |
267 | close(chr->logfd); | |
d0d7708b | 268 | } |
777357d7 MAL |
269 | qemu_mutex_destroy(&chr->chr_write_lock); |
270 | } | |
271 | ||
272 | static const TypeInfo char_type_info = { | |
273 | .name = TYPE_CHARDEV, | |
274 | .parent = TYPE_OBJECT, | |
275 | .instance_size = sizeof(Chardev), | |
276 | .instance_init = char_init, | |
277 | .instance_finalize = char_finalize, | |
278 | .abstract = true, | |
279 | .class_size = sizeof(ChardevClass), | |
eb314a94 | 280 | .class_init = char_class_init, |
777357d7 MAL |
281 | }; |
282 | ||
7b7ab18d MR |
283 | /** |
284 | * Called after processing of default and command-line-specified | |
285 | * chardevs to deliver CHR_EVENT_OPENED events to any FEs attached | |
286 | * to a mux chardev. This is done here to ensure that | |
287 | * output/prompts/banners are only displayed for the FE that has | |
288 | * focus when initial command-line processing/machine init is | |
289 | * completed. | |
290 | * | |
291 | * After this point, any new FE attached to any new or existing | |
292 | * mux will receive CHR_EVENT_OPENED notifications for the BE | |
293 | * immediately. | |
294 | */ | |
6061162e | 295 | static int open_muxes(Object *child, void *opaque) |
7b7ab18d | 296 | { |
6061162e MAL |
297 | if (CHARDEV_IS_MUX(child)) { |
298 | /* send OPENED to all already-attached FEs */ | |
299 | mux_chr_send_all_event(CHARDEV(child), CHR_EVENT_OPENED); | |
300 | /* mark mux as OPENED so any new FEs will immediately receive | |
301 | * OPENED event | |
302 | */ | |
303 | qemu_chr_be_event(CHARDEV(child), CHR_EVENT_OPENED); | |
304 | } | |
7b7ab18d | 305 | |
6061162e MAL |
306 | return 0; |
307 | } | |
7b7ab18d | 308 | |
6061162e MAL |
309 | static void muxes_realize_done(Notifier *notifier, void *unused) |
310 | { | |
7b7ab18d | 311 | muxes_realized = true; |
6061162e | 312 | object_child_foreach(get_chardevs_root(), open_muxes, NULL); |
7b7ab18d MR |
313 | } |
314 | ||
315 | static Notifier muxes_realize_notify = { | |
316 | .notify = muxes_realize_done, | |
317 | }; | |
318 | ||
0ec7b3e7 | 319 | static bool qemu_chr_is_busy(Chardev *s) |
a4afa548 | 320 | { |
777357d7 MAL |
321 | if (CHARDEV_IS_MUX(s)) { |
322 | MuxChardev *d = MUX_CHARDEV(s); | |
a4afa548 MAL |
323 | return d->mux_cnt >= 0; |
324 | } else { | |
325 | return s->be != NULL; | |
326 | } | |
327 | } | |
328 | ||
d24ca4b8 | 329 | int qemu_chr_wait_connected(Chardev *chr, Error **errp) |
6b6723c3 | 330 | { |
777357d7 MAL |
331 | ChardevClass *cc = CHARDEV_GET_CLASS(chr); |
332 | ||
333 | if (cc->chr_wait_connected) { | |
334 | return cc->chr_wait_connected(chr, errp); | |
6b6723c3 MAL |
335 | } |
336 | ||
337 | return 0; | |
338 | } | |
339 | ||
33521634 | 340 | QemuOpts *qemu_chr_parse_compat(const char *label, const char *filename) |
191bc01b | 341 | { |
6ea314d9 | 342 | char host[65], port[33], width[8], height[8]; |
aeb2c47a | 343 | int pos; |
7d31544f | 344 | const char *p; |
191bc01b | 345 | QemuOpts *opts; |
8be7e7e4 | 346 | Error *local_err = NULL; |
191bc01b | 347 | |
8be7e7e4 | 348 | opts = qemu_opts_create(qemu_find_opts("chardev"), label, 1, &local_err); |
84d18f06 | 349 | if (local_err) { |
33394884 | 350 | error_report_err(local_err); |
191bc01b | 351 | return NULL; |
8be7e7e4 | 352 | } |
191bc01b | 353 | |
7591c5c1 GH |
354 | if (strstart(filename, "mon:", &p)) { |
355 | filename = p; | |
f43e47db | 356 | qemu_opt_set(opts, "mux", "on", &error_abort); |
02c4bdf1 PB |
357 | if (strcmp(filename, "stdio") == 0) { |
358 | /* Monitor is muxed to stdio: do not exit on Ctrl+C by default | |
359 | * but pass it to the guest. Handle this only for compat syntax, | |
360 | * for -chardev syntax we have special option for this. | |
361 | * This is what -nographic did, redirecting+muxing serial+monitor | |
362 | * to stdio causing Ctrl+C to be passed to guest. */ | |
f43e47db | 363 | qemu_opt_set(opts, "signal", "off", &error_abort); |
02c4bdf1 | 364 | } |
7591c5c1 GH |
365 | } |
366 | ||
f0457e8d GH |
367 | if (strcmp(filename, "null") == 0 || |
368 | strcmp(filename, "pty") == 0 || | |
369 | strcmp(filename, "msmouse") == 0 || | |
378af961 | 370 | strcmp(filename, "wctablet") == 0 || |
dc1c21e6 | 371 | strcmp(filename, "braille") == 0 || |
5692399f | 372 | strcmp(filename, "testdev") == 0 || |
f0457e8d | 373 | strcmp(filename, "stdio") == 0) { |
f43e47db | 374 | qemu_opt_set(opts, "backend", filename, &error_abort); |
191bc01b GH |
375 | return opts; |
376 | } | |
6ea314d9 | 377 | if (strstart(filename, "vc", &p)) { |
f43e47db | 378 | qemu_opt_set(opts, "backend", "vc", &error_abort); |
6ea314d9 | 379 | if (*p == ':') { |
49aa4058 | 380 | if (sscanf(p+1, "%7[0-9]x%7[0-9]", width, height) == 2) { |
6ea314d9 | 381 | /* pixels */ |
f43e47db MA |
382 | qemu_opt_set(opts, "width", width, &error_abort); |
383 | qemu_opt_set(opts, "height", height, &error_abort); | |
49aa4058 | 384 | } else if (sscanf(p+1, "%7[0-9]Cx%7[0-9]C", width, height) == 2) { |
6ea314d9 | 385 | /* chars */ |
f43e47db MA |
386 | qemu_opt_set(opts, "cols", width, &error_abort); |
387 | qemu_opt_set(opts, "rows", height, &error_abort); | |
6ea314d9 GH |
388 | } else { |
389 | goto fail; | |
390 | } | |
391 | } | |
392 | return opts; | |
393 | } | |
d6c983cd | 394 | if (strcmp(filename, "con:") == 0) { |
f43e47db | 395 | qemu_opt_set(opts, "backend", "console", &error_abort); |
d6c983cd GH |
396 | return opts; |
397 | } | |
48b76496 | 398 | if (strstart(filename, "COM", NULL)) { |
f43e47db MA |
399 | qemu_opt_set(opts, "backend", "serial", &error_abort); |
400 | qemu_opt_set(opts, "path", filename, &error_abort); | |
48b76496 GH |
401 | return opts; |
402 | } | |
7d31544f | 403 | if (strstart(filename, "file:", &p)) { |
f43e47db MA |
404 | qemu_opt_set(opts, "backend", "file", &error_abort); |
405 | qemu_opt_set(opts, "path", p, &error_abort); | |
7d31544f GH |
406 | return opts; |
407 | } | |
408 | if (strstart(filename, "pipe:", &p)) { | |
f43e47db MA |
409 | qemu_opt_set(opts, "backend", "pipe", &error_abort); |
410 | qemu_opt_set(opts, "path", p, &error_abort); | |
7d31544f GH |
411 | return opts; |
412 | } | |
aeb2c47a | 413 | if (strstart(filename, "tcp:", &p) || |
ae92cbd5 JL |
414 | strstart(filename, "telnet:", &p) || |
415 | strstart(filename, "tn3270:", &p)) { | |
aeb2c47a GH |
416 | if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) { |
417 | host[0] = 0; | |
418 | if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) | |
419 | goto fail; | |
420 | } | |
f43e47db MA |
421 | qemu_opt_set(opts, "backend", "socket", &error_abort); |
422 | qemu_opt_set(opts, "host", host, &error_abort); | |
423 | qemu_opt_set(opts, "port", port, &error_abort); | |
aeb2c47a | 424 | if (p[pos] == ',') { |
dc523cd3 MA |
425 | qemu_opts_do_parse(opts, p+pos+1, NULL, &local_err); |
426 | if (local_err) { | |
427 | error_report_err(local_err); | |
aeb2c47a | 428 | goto fail; |
dc523cd3 | 429 | } |
aeb2c47a | 430 | } |
ae92cbd5 | 431 | if (strstart(filename, "telnet:", &p)) { |
f43e47db | 432 | qemu_opt_set(opts, "telnet", "on", &error_abort); |
ae92cbd5 JL |
433 | } else if (strstart(filename, "tn3270:", &p)) { |
434 | qemu_opt_set(opts, "tn3270", "on", &error_abort); | |
435 | } | |
aeb2c47a GH |
436 | return opts; |
437 | } | |
7e1b35b4 | 438 | if (strstart(filename, "udp:", &p)) { |
f43e47db | 439 | qemu_opt_set(opts, "backend", "udp", &error_abort); |
7e1b35b4 GH |
440 | if (sscanf(p, "%64[^:]:%32[^@,]%n", host, port, &pos) < 2) { |
441 | host[0] = 0; | |
39324ca4 | 442 | if (sscanf(p, ":%32[^@,]%n", port, &pos) < 1) { |
7e1b35b4 GH |
443 | goto fail; |
444 | } | |
445 | } | |
f43e47db MA |
446 | qemu_opt_set(opts, "host", host, &error_abort); |
447 | qemu_opt_set(opts, "port", port, &error_abort); | |
7e1b35b4 GH |
448 | if (p[pos] == '@') { |
449 | p += pos + 1; | |
450 | if (sscanf(p, "%64[^:]:%32[^,]%n", host, port, &pos) < 2) { | |
451 | host[0] = 0; | |
452 | if (sscanf(p, ":%32[^,]%n", port, &pos) < 1) { | |
7e1b35b4 GH |
453 | goto fail; |
454 | } | |
455 | } | |
f43e47db MA |
456 | qemu_opt_set(opts, "localaddr", host, &error_abort); |
457 | qemu_opt_set(opts, "localport", port, &error_abort); | |
7e1b35b4 GH |
458 | } |
459 | return opts; | |
460 | } | |
aeb2c47a | 461 | if (strstart(filename, "unix:", &p)) { |
f43e47db | 462 | qemu_opt_set(opts, "backend", "socket", &error_abort); |
dc523cd3 MA |
463 | qemu_opts_do_parse(opts, p, "path", &local_err); |
464 | if (local_err) { | |
465 | error_report_err(local_err); | |
aeb2c47a | 466 | goto fail; |
dc523cd3 | 467 | } |
aeb2c47a GH |
468 | return opts; |
469 | } | |
48b76496 GH |
470 | if (strstart(filename, "/dev/parport", NULL) || |
471 | strstart(filename, "/dev/ppi", NULL)) { | |
73119c28 | 472 | qemu_opt_set(opts, "backend", "parallel", &error_abort); |
f43e47db | 473 | qemu_opt_set(opts, "path", filename, &error_abort); |
48b76496 GH |
474 | return opts; |
475 | } | |
476 | if (strstart(filename, "/dev/", NULL)) { | |
73119c28 | 477 | qemu_opt_set(opts, "backend", "serial", &error_abort); |
f43e47db | 478 | qemu_opt_set(opts, "path", filename, &error_abort); |
48b76496 GH |
479 | return opts; |
480 | } | |
191bc01b | 481 | |
aeb2c47a | 482 | fail: |
191bc01b GH |
483 | qemu_opts_del(opts); |
484 | return NULL; | |
485 | } | |
486 | ||
21a933ea | 487 | void qemu_chr_parse_common(QemuOpts *opts, ChardevCommon *backend) |
d0d7708b DB |
488 | { |
489 | const char *logfile = qemu_opt_get(opts, "logfile"); | |
490 | ||
491 | backend->has_logfile = logfile != NULL; | |
e1f98fe4 | 492 | backend->logfile = g_strdup(logfile); |
d0d7708b DB |
493 | |
494 | backend->has_logappend = true; | |
495 | backend->logappend = qemu_opt_get_bool(opts, "logappend", false); | |
496 | } | |
497 | ||
88cace9f MAL |
498 | static const ChardevClass *char_get_class(const char *driver, Error **errp) |
499 | { | |
500 | ObjectClass *oc; | |
501 | const ChardevClass *cc; | |
502 | char *typename = g_strdup_printf("chardev-%s", driver); | |
503 | ||
504 | oc = object_class_by_name(typename); | |
505 | g_free(typename); | |
506 | ||
507 | if (!object_class_dynamic_cast(oc, TYPE_CHARDEV)) { | |
508 | error_setg(errp, "'%s' is not a valid char driver name", driver); | |
509 | return NULL; | |
510 | } | |
d654f34e | 511 | |
88cace9f MAL |
512 | if (object_class_is_abstract(oc)) { |
513 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "driver", | |
514 | "abstract device type"); | |
515 | return NULL; | |
516 | } | |
517 | ||
518 | cc = CHARDEV_CLASS(oc); | |
519 | if (cc->internal) { | |
520 | error_setg(errp, "'%s' is not a valid char driver name", driver); | |
521 | return NULL; | |
522 | } | |
523 | ||
524 | return cc; | |
525 | } | |
526 | ||
527 | static const struct ChardevAlias { | |
528 | const char *typename; | |
529 | const char *alias; | |
530 | } chardev_alias_table[] = { | |
531 | #ifdef HAVE_CHARDEV_PARPORT | |
532 | { "parallel", "parport" }, | |
533 | #endif | |
534 | #ifdef HAVE_CHARDEV_SERIAL | |
535 | { "serial", "tty" }, | |
536 | #endif | |
537 | }; | |
538 | ||
539 | typedef struct ChadevClassFE { | |
540 | void (*fn)(const char *name, void *opaque); | |
541 | void *opaque; | |
542 | } ChadevClassFE; | |
543 | ||
544 | static void | |
545 | chardev_class_foreach(ObjectClass *klass, void *opaque) | |
2c5f4882 | 546 | { |
88cace9f MAL |
547 | ChadevClassFE *fe = opaque; |
548 | ||
549 | assert(g_str_has_prefix(object_class_get_name(klass), "chardev-")); | |
550 | if (CHARDEV_CLASS(klass)->internal) { | |
551 | return; | |
552 | } | |
553 | ||
554 | fe->fn(object_class_get_name(klass) + 8, fe->opaque); | |
555 | } | |
556 | ||
557 | static void | |
558 | chardev_name_foreach(void (*fn)(const char *name, void *opaque), void *opaque) | |
559 | { | |
560 | ChadevClassFE fe = { .fn = fn, .opaque = opaque }; | |
561 | int i; | |
562 | ||
563 | object_class_foreach(chardev_class_foreach, TYPE_CHARDEV, false, &fe); | |
564 | ||
c7e47c63 | 565 | for (i = 0; i < (int)ARRAY_SIZE(chardev_alias_table); i++) { |
88cace9f MAL |
566 | fn(chardev_alias_table[i].alias, opaque); |
567 | } | |
568 | } | |
569 | ||
570 | static void | |
571 | help_string_append(const char *name, void *opaque) | |
572 | { | |
573 | GString *str = opaque; | |
574 | ||
575 | g_string_append_printf(str, "\n%s", name); | |
2c5f4882 GH |
576 | } |
577 | ||
313e45b5 AN |
578 | static const char *chardev_alias_translate(const char *name) |
579 | { | |
580 | int i; | |
581 | for (i = 0; i < (int)ARRAY_SIZE(chardev_alias_table); i++) { | |
582 | if (g_strcmp0(chardev_alias_table[i].alias, name) == 0) { | |
583 | return chardev_alias_table[i].typename; | |
584 | } | |
585 | } | |
586 | return name; | |
587 | } | |
588 | ||
75b60160 | 589 | ChardevBackend *qemu_chr_parse_opts(QemuOpts *opts, Error **errp) |
191bc01b | 590 | { |
0aff637e | 591 | Error *local_err = NULL; |
88cace9f | 592 | const ChardevClass *cc; |
0b663b7d | 593 | ChardevBackend *backend = NULL; |
313e45b5 | 594 | const char *name = chardev_alias_translate(qemu_opt_get(opts, "backend")); |
191bc01b | 595 | |
0b812f31 | 596 | if (name == NULL) { |
312fd5f2 | 597 | error_setg(errp, "chardev: \"%s\" missing backend", |
bd2d80b2 | 598 | qemu_opts_id(opts)); |
0b663b7d | 599 | return NULL; |
1bbd185f | 600 | } |
517b3d40 | 601 | |
313e45b5 AN |
602 | cc = char_get_class(name, errp); |
603 | if (cc == NULL) { | |
604 | return NULL; | |
605 | } | |
606 | ||
607 | backend = g_new0(ChardevBackend, 1); | |
608 | backend->type = CHARDEV_BACKEND_KIND_NULL; | |
609 | ||
610 | if (cc->parse) { | |
611 | cc->parse(opts, backend, &local_err); | |
612 | if (local_err) { | |
613 | error_propagate(errp, local_err); | |
614 | qapi_free_ChardevBackend(backend); | |
615 | return NULL; | |
616 | } | |
617 | } else { | |
618 | ChardevCommon *ccom = g_new0(ChardevCommon, 1); | |
619 | qemu_chr_parse_common(opts, ccom); | |
620 | backend->u.null.data = ccom; /* Any ChardevCommon member would work */ | |
621 | } | |
622 | ||
623 | return backend; | |
624 | } | |
625 | ||
626 | Chardev *qemu_chr_new_from_opts(QemuOpts *opts, Error **errp) | |
627 | { | |
628 | const ChardevClass *cc; | |
629 | Chardev *chr = NULL; | |
630 | ChardevBackend *backend = NULL; | |
631 | const char *name = chardev_alias_translate(qemu_opt_get(opts, "backend")); | |
632 | const char *id = qemu_opts_id(opts); | |
633 | char *bid = NULL; | |
634 | ||
635 | if (name && is_help_option(name)) { | |
776a32a0 | 636 | GString *str = g_string_new(""); |
88cace9f MAL |
637 | |
638 | chardev_name_foreach(help_string_append, str); | |
776a32a0 MAL |
639 | |
640 | error_report("Available chardev backend types: %s", str->str); | |
641 | g_string_free(str, true); | |
0ec846bf | 642 | return NULL; |
517b3d40 LM |
643 | } |
644 | ||
645 | if (id == NULL) { | |
646 | error_setg(errp, "chardev: no id specified"); | |
0b663b7d | 647 | return NULL; |
517b3d40 LM |
648 | } |
649 | ||
313e45b5 AN |
650 | backend = qemu_chr_parse_opts(opts, errp); |
651 | if (backend == NULL) { | |
652 | return NULL; | |
191bc01b | 653 | } |
88cace9f MAL |
654 | |
655 | cc = char_get_class(name, errp); | |
656 | if (cc == NULL) { | |
313e45b5 | 657 | goto out; |
191bc01b GH |
658 | } |
659 | ||
a61ae7f8 PM |
660 | if (qemu_opt_get_bool(opts, "mux", 0)) { |
661 | bid = g_strdup_printf("%s-base", id); | |
662 | } | |
2c5f4882 | 663 | |
c5749f7c | 664 | chr = qemu_chardev_new(bid ? bid : id, |
0b663b7d MAL |
665 | object_class_get_name(OBJECT_CLASS(cc)), |
666 | backend, errp); | |
c5749f7c | 667 | |
0b663b7d MAL |
668 | if (chr == NULL) { |
669 | goto out; | |
191bc01b GH |
670 | } |
671 | ||
a61ae7f8 | 672 | if (bid) { |
0b663b7d | 673 | Chardev *mux; |
a61ae7f8 | 674 | qapi_free_ChardevBackend(backend); |
a61ae7f8 | 675 | backend = g_new0(ChardevBackend, 1); |
130257dc | 676 | backend->type = CHARDEV_BACKEND_KIND_MUX; |
0b663b7d | 677 | backend->u.mux.data = g_new0(ChardevMux, 1); |
32bafa8f | 678 | backend->u.mux.data->chardev = g_strdup(bid); |
c5749f7c | 679 | mux = qemu_chardev_new(id, TYPE_CHARDEV_MUX, backend, errp); |
0b663b7d | 680 | if (mux == NULL) { |
2f5d45a1 | 681 | object_unparent(OBJECT(chr)); |
a61ae7f8 | 682 | chr = NULL; |
0b663b7d | 683 | goto out; |
a61ae7f8 | 684 | } |
0b663b7d | 685 | chr = mux; |
bd5c51ee | 686 | } |
7591c5c1 | 687 | |
0b663b7d | 688 | out: |
a61ae7f8 | 689 | qapi_free_ChardevBackend(backend); |
a61ae7f8 | 690 | g_free(bid); |
191bc01b GH |
691 | return chr; |
692 | } | |
693 | ||
0ec7b3e7 | 694 | Chardev *qemu_chr_new_noreplay(const char *label, const char *filename) |
6f97dba0 AL |
695 | { |
696 | const char *p; | |
0ec7b3e7 | 697 | Chardev *chr; |
191bc01b | 698 | QemuOpts *opts; |
bd2d80b2 | 699 | Error *err = NULL; |
191bc01b | 700 | |
c845f401 GH |
701 | if (strstart(filename, "chardev:", &p)) { |
702 | return qemu_chr_find(p); | |
703 | } | |
704 | ||
191bc01b | 705 | opts = qemu_chr_parse_compat(label, filename); |
7e1b35b4 GH |
706 | if (!opts) |
707 | return NULL; | |
6f97dba0 | 708 | |
b4948be9 | 709 | chr = qemu_chr_new_from_opts(opts, &err); |
84d18f06 | 710 | if (err) { |
565f65d2 | 711 | error_report_err(err); |
bd2d80b2 | 712 | } |
7e1b35b4 GH |
713 | if (chr && qemu_opt_get_bool(opts, "mux", 0)) { |
714 | monitor_init(chr, MONITOR_USE_READLINE); | |
6f97dba0 | 715 | } |
0a73336d | 716 | qemu_opts_del(opts); |
6f97dba0 AL |
717 | return chr; |
718 | } | |
719 | ||
0ec7b3e7 | 720 | Chardev *qemu_chr_new(const char *label, const char *filename) |
33577b47 | 721 | { |
0ec7b3e7 | 722 | Chardev *chr; |
b4948be9 | 723 | chr = qemu_chr_new_noreplay(label, filename); |
33577b47 | 724 | if (chr) { |
5ebd6703 MAL |
725 | if (replay_mode != REPLAY_MODE_NONE) { |
726 | qemu_chr_set_feature(chr, QEMU_CHAR_FEATURE_REPLAY); | |
727 | } | |
777357d7 | 728 | if (qemu_chr_replay(chr) && CHARDEV_GET_CLASS(chr)->chr_ioctl) { |
776a32a0 MAL |
729 | error_report("Replay: ioctl is not supported " |
730 | "for serial devices yet"); | |
33577b47 PD |
731 | } |
732 | replay_register_char_driver(chr); | |
733 | } | |
734 | return chr; | |
735 | } | |
736 | ||
6061162e | 737 | static int qmp_query_chardev_foreach(Object *obj, void *data) |
1ad78ea5 | 738 | { |
6061162e MAL |
739 | Chardev *chr = CHARDEV(obj); |
740 | ChardevInfoList **list = data; | |
741 | ChardevInfoList *info = g_malloc0(sizeof(*info)); | |
742 | ||
743 | info->value = g_malloc0(sizeof(*info->value)); | |
744 | info->value->label = g_strdup(chr->label); | |
745 | info->value->filename = g_strdup(chr->filename); | |
746 | info->value->frontend_open = chr->be && chr->be->fe_open; | |
747 | ||
748 | info->next = *list; | |
749 | *list = info; | |
750 | ||
751 | return 0; | |
1ad78ea5 MAL |
752 | } |
753 | ||
c5a415a0 | 754 | ChardevInfoList *qmp_query_chardev(Error **errp) |
6f97dba0 | 755 | { |
c5a415a0 | 756 | ChardevInfoList *chr_list = NULL; |
6f97dba0 | 757 | |
6061162e MAL |
758 | object_child_foreach(get_chardevs_root(), |
759 | qmp_query_chardev_foreach, &chr_list); | |
588b3832 | 760 | |
c5a415a0 | 761 | return chr_list; |
6f97dba0 | 762 | } |
c845f401 | 763 | |
88cace9f MAL |
764 | static void |
765 | qmp_prepend_backend(const char *name, void *opaque) | |
0b812f31 | 766 | { |
88cace9f | 767 | ChardevBackendInfoList **list = opaque; |
0b812f31 | 768 | ChardevBackendInfoList *info = g_malloc0(sizeof(*info)); |
88cace9f | 769 | |
0b812f31 MAL |
770 | info->value = g_malloc0(sizeof(*info->value)); |
771 | info->value->name = g_strdup(name); | |
88cace9f MAL |
772 | info->next = *list; |
773 | *list = info; | |
0b812f31 MAL |
774 | } |
775 | ||
77d1c3c6 MK |
776 | ChardevBackendInfoList *qmp_query_chardev_backends(Error **errp) |
777 | { | |
778 | ChardevBackendInfoList *backend_list = NULL; | |
a1698bf1 | 779 | |
88cace9f | 780 | chardev_name_foreach(qmp_prepend_backend, &backend_list); |
77d1c3c6 MK |
781 | |
782 | return backend_list; | |
783 | } | |
784 | ||
0ec7b3e7 | 785 | Chardev *qemu_chr_find(const char *name) |
c845f401 | 786 | { |
6061162e | 787 | Object *obj = object_resolve_path_component(get_chardevs_root(), name); |
c845f401 | 788 | |
6061162e | 789 | return obj ? CHARDEV(obj) : NULL; |
c845f401 | 790 | } |
0beb4942 | 791 | |
4d454574 PB |
792 | QemuOptsList qemu_chardev_opts = { |
793 | .name = "chardev", | |
794 | .implied_opt_name = "backend", | |
795 | .head = QTAILQ_HEAD_INITIALIZER(qemu_chardev_opts.head), | |
796 | .desc = { | |
797 | { | |
798 | .name = "backend", | |
799 | .type = QEMU_OPT_STRING, | |
800 | },{ | |
801 | .name = "path", | |
802 | .type = QEMU_OPT_STRING, | |
803 | },{ | |
804 | .name = "host", | |
805 | .type = QEMU_OPT_STRING, | |
806 | },{ | |
807 | .name = "port", | |
808 | .type = QEMU_OPT_STRING, | |
809 | },{ | |
810 | .name = "localaddr", | |
811 | .type = QEMU_OPT_STRING, | |
812 | },{ | |
813 | .name = "localport", | |
814 | .type = QEMU_OPT_STRING, | |
815 | },{ | |
816 | .name = "to", | |
817 | .type = QEMU_OPT_NUMBER, | |
818 | },{ | |
819 | .name = "ipv4", | |
820 | .type = QEMU_OPT_BOOL, | |
821 | },{ | |
822 | .name = "ipv6", | |
823 | .type = QEMU_OPT_BOOL, | |
824 | },{ | |
825 | .name = "wait", | |
826 | .type = QEMU_OPT_BOOL, | |
827 | },{ | |
828 | .name = "server", | |
829 | .type = QEMU_OPT_BOOL, | |
830 | },{ | |
831 | .name = "delay", | |
832 | .type = QEMU_OPT_BOOL, | |
5dd1f02b CM |
833 | },{ |
834 | .name = "reconnect", | |
835 | .type = QEMU_OPT_NUMBER, | |
4d454574 PB |
836 | },{ |
837 | .name = "telnet", | |
838 | .type = QEMU_OPT_BOOL, | |
ae92cbd5 JL |
839 | },{ |
840 | .name = "tn3270", | |
841 | .type = QEMU_OPT_BOOL, | |
a8fb5427 DB |
842 | },{ |
843 | .name = "tls-creds", | |
844 | .type = QEMU_OPT_STRING, | |
4d454574 PB |
845 | },{ |
846 | .name = "width", | |
847 | .type = QEMU_OPT_NUMBER, | |
848 | },{ | |
849 | .name = "height", | |
850 | .type = QEMU_OPT_NUMBER, | |
851 | },{ | |
852 | .name = "cols", | |
853 | .type = QEMU_OPT_NUMBER, | |
854 | },{ | |
855 | .name = "rows", | |
856 | .type = QEMU_OPT_NUMBER, | |
857 | },{ | |
858 | .name = "mux", | |
859 | .type = QEMU_OPT_BOOL, | |
860 | },{ | |
861 | .name = "signal", | |
862 | .type = QEMU_OPT_BOOL, | |
863 | },{ | |
864 | .name = "name", | |
865 | .type = QEMU_OPT_STRING, | |
866 | },{ | |
867 | .name = "debug", | |
868 | .type = QEMU_OPT_NUMBER, | |
51767e7c | 869 | },{ |
3949e594 | 870 | .name = "size", |
de1cc36e | 871 | .type = QEMU_OPT_SIZE, |
bb6fb7c0 GH |
872 | },{ |
873 | .name = "chardev", | |
874 | .type = QEMU_OPT_STRING, | |
31e38a22 OK |
875 | },{ |
876 | .name = "append", | |
877 | .type = QEMU_OPT_BOOL, | |
d0d7708b DB |
878 | },{ |
879 | .name = "logfile", | |
880 | .type = QEMU_OPT_STRING, | |
881 | },{ | |
882 | .name = "logappend", | |
883 | .type = QEMU_OPT_BOOL, | |
4d454574 PB |
884 | }, |
885 | { /* end of list */ } | |
886 | }, | |
887 | }; | |
f1a1a356 | 888 | |
0ec7b3e7 | 889 | bool qemu_chr_has_feature(Chardev *chr, |
279b066e | 890 | ChardevFeature feature) |
0a73336d DB |
891 | { |
892 | return test_bit(feature, chr->features); | |
893 | } | |
894 | ||
0ec7b3e7 | 895 | void qemu_chr_set_feature(Chardev *chr, |
279b066e | 896 | ChardevFeature feature) |
0a73336d DB |
897 | { |
898 | return set_bit(feature, chr->features); | |
899 | } | |
900 | ||
777357d7 | 901 | Chardev *qemu_chardev_new(const char *id, const char *typename, |
2f5d45a1 MAL |
902 | ChardevBackend *backend, |
903 | Error **errp) | |
f1a1a356 | 904 | { |
2f5d45a1 | 905 | Object *obj; |
0ec7b3e7 | 906 | Chardev *chr = NULL; |
eaeba653 | 907 | Error *local_err = NULL; |
82878dac | 908 | bool be_opened = true; |
f1a1a356 | 909 | |
777357d7 | 910 | assert(g_str_has_prefix(typename, "chardev-")); |
f1a1a356 | 911 | |
2f5d45a1 MAL |
912 | obj = object_new(typename); |
913 | chr = CHARDEV(obj); | |
777357d7 | 914 | chr->label = g_strdup(id); |
4ca17281 | 915 | |
777357d7 | 916 | qemu_char_open(chr, backend, &be_opened, &local_err); |
a1698bf1 | 917 | if (local_err) { |
2f5d45a1 | 918 | goto end; |
eaeba653 PB |
919 | } |
920 | ||
eaeba653 | 921 | if (!chr->filename) { |
777357d7 | 922 | chr->filename = g_strdup(typename + 8); |
f1a1a356 | 923 | } |
82878dac | 924 | if (be_opened) { |
eaeba653 PB |
925 | qemu_chr_be_event(chr, CHR_EVENT_OPENED); |
926 | } | |
777357d7 | 927 | |
2f5d45a1 MAL |
928 | if (id) { |
929 | object_property_add_child(get_chardevs_root(), id, obj, &local_err); | |
930 | if (local_err) { | |
931 | goto end; | |
932 | } | |
933 | object_unref(obj); | |
934 | } | |
935 | ||
936 | end: | |
937 | if (local_err) { | |
938 | error_propagate(errp, local_err); | |
939 | object_unref(obj); | |
940 | return NULL; | |
941 | } | |
942 | ||
777357d7 MAL |
943 | return chr; |
944 | } | |
945 | ||
946 | ChardevReturn *qmp_chardev_add(const char *id, ChardevBackend *backend, | |
947 | Error **errp) | |
948 | { | |
949 | const ChardevClass *cc; | |
950 | ChardevReturn *ret; | |
951 | Chardev *chr; | |
952 | ||
977c736f | 953 | cc = char_get_class(ChardevBackendKind_str(backend->type), errp); |
777357d7 MAL |
954 | if (!cc) { |
955 | return NULL; | |
956 | } | |
957 | ||
c5749f7c | 958 | chr = qemu_chardev_new(id, object_class_get_name(OBJECT_CLASS(cc)), |
777357d7 MAL |
959 | backend, errp); |
960 | if (!chr) { | |
961 | return NULL; | |
962 | } | |
963 | ||
964 | ret = g_new0(ChardevReturn, 1); | |
965 | if (CHARDEV_IS_PTY(chr)) { | |
966 | ret->pty = g_strdup(chr->filename + 4); | |
967 | ret->has_pty = true; | |
968 | } | |
969 | ||
eaeba653 | 970 | return ret; |
f1a1a356 GH |
971 | } |
972 | ||
7bb86085 AN |
973 | ChardevReturn *qmp_chardev_change(const char *id, ChardevBackend *backend, |
974 | Error **errp) | |
975 | { | |
976 | CharBackend *be; | |
977 | const ChardevClass *cc; | |
978 | Chardev *chr, *chr_new; | |
979 | bool closed_sent = false; | |
980 | ChardevReturn *ret; | |
981 | ||
982 | chr = qemu_chr_find(id); | |
983 | if (!chr) { | |
984 | error_setg(errp, "Chardev '%s' does not exist", id); | |
985 | return NULL; | |
986 | } | |
987 | ||
988 | if (CHARDEV_IS_MUX(chr)) { | |
989 | error_setg(errp, "Mux device hotswap not supported yet"); | |
990 | return NULL; | |
991 | } | |
992 | ||
993 | if (qemu_chr_replay(chr)) { | |
994 | error_setg(errp, | |
995 | "Chardev '%s' cannot be changed in record/replay mode", id); | |
996 | return NULL; | |
997 | } | |
998 | ||
999 | be = chr->be; | |
1000 | if (!be) { | |
1001 | /* easy case */ | |
1002 | object_unparent(OBJECT(chr)); | |
1003 | return qmp_chardev_add(id, backend, errp); | |
1004 | } | |
1005 | ||
1006 | if (!be->chr_be_change) { | |
1007 | error_setg(errp, "Chardev user does not support chardev hotswap"); | |
1008 | return NULL; | |
1009 | } | |
1010 | ||
977c736f | 1011 | cc = char_get_class(ChardevBackendKind_str(backend->type), errp); |
7bb86085 AN |
1012 | if (!cc) { |
1013 | return NULL; | |
1014 | } | |
1015 | ||
1016 | chr_new = qemu_chardev_new(NULL, object_class_get_name(OBJECT_CLASS(cc)), | |
1017 | backend, errp); | |
1018 | if (!chr_new) { | |
1019 | return NULL; | |
1020 | } | |
1021 | chr_new->label = g_strdup(id); | |
1022 | ||
1023 | if (chr->be_open && !chr_new->be_open) { | |
1024 | qemu_chr_be_event(chr, CHR_EVENT_CLOSED); | |
1025 | closed_sent = true; | |
1026 | } | |
1027 | ||
1028 | chr->be = NULL; | |
1029 | qemu_chr_fe_init(be, chr_new, &error_abort); | |
1030 | ||
1031 | if (be->chr_be_change(be->opaque) < 0) { | |
1032 | error_setg(errp, "Chardev '%s' change failed", chr_new->label); | |
1033 | chr_new->be = NULL; | |
1034 | qemu_chr_fe_init(be, chr, &error_abort); | |
1035 | if (closed_sent) { | |
1036 | qemu_chr_be_event(chr, CHR_EVENT_OPENED); | |
1037 | } | |
1038 | object_unref(OBJECT(chr_new)); | |
1039 | return NULL; | |
1040 | } | |
1041 | ||
1042 | object_unparent(OBJECT(chr)); | |
1043 | object_property_add_child(get_chardevs_root(), chr_new->label, | |
1044 | OBJECT(chr_new), &error_abort); | |
1045 | object_unref(OBJECT(chr_new)); | |
1046 | ||
1047 | ret = g_new0(ChardevReturn, 1); | |
1048 | if (CHARDEV_IS_PTY(chr_new)) { | |
1049 | ret->pty = g_strdup(chr_new->filename + 4); | |
1050 | ret->has_pty = true; | |
1051 | } | |
1052 | ||
1053 | return ret; | |
1054 | } | |
1055 | ||
f1a1a356 GH |
1056 | void qmp_chardev_remove(const char *id, Error **errp) |
1057 | { | |
0ec7b3e7 | 1058 | Chardev *chr; |
f1a1a356 GH |
1059 | |
1060 | chr = qemu_chr_find(id); | |
8108fd3e | 1061 | if (chr == NULL) { |
f1a1a356 GH |
1062 | error_setg(errp, "Chardev '%s' not found", id); |
1063 | return; | |
1064 | } | |
a4afa548 | 1065 | if (qemu_chr_is_busy(chr)) { |
f1a1a356 GH |
1066 | error_setg(errp, "Chardev '%s' is busy", id); |
1067 | return; | |
1068 | } | |
5ebd6703 | 1069 | if (qemu_chr_replay(chr)) { |
33577b47 PD |
1070 | error_setg(errp, |
1071 | "Chardev '%s' cannot be unplugged in record/replay mode", id); | |
1072 | return; | |
1073 | } | |
2f5d45a1 | 1074 | object_unparent(OBJECT(chr)); |
f1a1a356 | 1075 | } |
d654f34e | 1076 | |
bd1d5ad9 SF |
1077 | void qmp_chardev_send_break(const char *id, Error **errp) |
1078 | { | |
1079 | Chardev *chr; | |
1080 | ||
1081 | chr = qemu_chr_find(id); | |
1082 | if (chr == NULL) { | |
1083 | error_setg(errp, "Chardev '%s' not found", id); | |
1084 | return; | |
1085 | } | |
1086 | qemu_chr_be_event(chr, CHR_EVENT_BREAK); | |
1087 | } | |
1088 | ||
2c716ba1 PX |
1089 | /* |
1090 | * Add a timeout callback for the chardev (in milliseconds), return | |
1091 | * the GSource object created. Please use this to add timeout hook for | |
1092 | * chardev instead of g_timeout_add() and g_timeout_add_seconds(), to | |
1093 | * make sure the gcontext that the task bound to is correct. | |
1094 | */ | |
1095 | GSource *qemu_chr_timeout_add_ms(Chardev *chr, guint ms, | |
1096 | GSourceFunc func, void *private) | |
1097 | { | |
1098 | GSource *source = g_timeout_source_new(ms); | |
1099 | ||
1100 | assert(func); | |
1101 | g_source_set_callback(source, func, private, NULL); | |
1102 | g_source_attach(source, chr->gcontext); | |
1103 | ||
1104 | return source; | |
1105 | } | |
1106 | ||
aa5cb7f5 | 1107 | void qemu_chr_cleanup(void) |
c1111a24 | 1108 | { |
2f5d45a1 | 1109 | object_unparent(get_chardevs_root()); |
c1111a24 MAL |
1110 | } |
1111 | ||
d654f34e AL |
1112 | static void register_types(void) |
1113 | { | |
88cace9f | 1114 | type_register_static(&char_type_info); |
0b812f31 | 1115 | |
7b7ab18d MR |
1116 | /* this must be done after machine init, since we register FEs with muxes |
1117 | * as part of realize functions like serial_isa_realizefn when -nographic | |
1118 | * is specified | |
1119 | */ | |
1120 | qemu_add_machine_init_done_notifier(&muxes_realize_notify); | |
d654f34e AL |
1121 | } |
1122 | ||
1123 | type_init(register_types); |