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1 | /* | |
2 | * QEMU monitor | |
3 | * | |
4 | * Copyright (c) 2003-2004 Fabrice Bellard | |
5 | * | |
6 | * Permission is hereby granted, free of charge, to any person obtaining a copy | |
7 | * of this software and associated documentation files (the "Software"), to deal | |
8 | * in the Software without restriction, including without limitation the rights | |
9 | * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell | |
10 | * copies of the Software, and to permit persons to whom the Software is | |
11 | * furnished to do so, subject to the following conditions: | |
12 | * | |
13 | * The above copyright notice and this permission notice shall be included in | |
14 | * all copies or substantial portions of the Software. | |
15 | * | |
16 | * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR | |
17 | * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, | |
18 | * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL | |
19 | * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER | |
20 | * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, | |
21 | * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN | |
22 | * THE SOFTWARE. | |
23 | */ | |
24 | ||
25 | #include "qemu/osdep.h" | |
26 | #include "qemu/units.h" | |
27 | #include <dirent.h> | |
28 | #include "cpu.h" | |
29 | #include "hw/hw.h" | |
30 | #include "monitor/qdev.h" | |
31 | #include "hw/usb.h" | |
32 | #include "hw/pci/pci.h" | |
33 | #include "sysemu/watchdog.h" | |
34 | #include "hw/loader.h" | |
35 | #include "exec/gdbstub.h" | |
36 | #include "net/net.h" | |
37 | #include "net/slirp.h" | |
38 | #include "chardev/char-fe.h" | |
39 | #include "chardev/char-io.h" | |
40 | #include "chardev/char-mux.h" | |
41 | #include "ui/qemu-spice.h" | |
42 | #include "sysemu/numa.h" | |
43 | #include "monitor/monitor.h" | |
44 | #include "qemu/config-file.h" | |
45 | #include "qemu/readline.h" | |
46 | #include "ui/console.h" | |
47 | #include "ui/input.h" | |
48 | #include "sysemu/block-backend.h" | |
49 | #include "audio/audio.h" | |
50 | #include "disas/disas.h" | |
51 | #include "sysemu/balloon.h" | |
52 | #include "qemu/timer.h" | |
53 | #include "sysemu/hw_accel.h" | |
54 | #include "authz/list.h" | |
55 | #include "qapi/util.h" | |
56 | #include "sysemu/tpm.h" | |
57 | #include "qapi/qmp/qdict.h" | |
58 | #include "qapi/qmp/qerror.h" | |
59 | #include "qapi/qmp/qnum.h" | |
60 | #include "qapi/qmp/qstring.h" | |
61 | #include "qapi/qmp/qjson.h" | |
62 | #include "qapi/qmp/json-parser.h" | |
63 | #include "qapi/qmp/qlist.h" | |
64 | #include "qom/object_interfaces.h" | |
65 | #include "trace-root.h" | |
66 | #include "trace/control.h" | |
67 | #include "monitor/hmp-target.h" | |
68 | #ifdef CONFIG_TRACE_SIMPLE | |
69 | #include "trace/simple.h" | |
70 | #endif | |
71 | #include "exec/memory.h" | |
72 | #include "exec/exec-all.h" | |
73 | #include "qemu/log.h" | |
74 | #include "qemu/option.h" | |
75 | #include "hmp.h" | |
76 | #include "qemu/thread.h" | |
77 | #include "block/qapi.h" | |
78 | #include "qapi/qapi-commands.h" | |
79 | #include "qapi/qapi-emit-events.h" | |
80 | #include "qapi/error.h" | |
81 | #include "qapi/qmp-event.h" | |
82 | #include "qapi/qapi-introspect.h" | |
83 | #include "sysemu/qtest.h" | |
84 | #include "sysemu/cpus.h" | |
85 | #include "sysemu/iothread.h" | |
86 | #include "qemu/cutils.h" | |
87 | #include "tcg/tcg.h" | |
88 | ||
89 | #if defined(TARGET_S390X) | |
90 | #include "hw/s390x/storage-keys.h" | |
91 | #include "hw/s390x/storage-attributes.h" | |
92 | #endif | |
93 | ||
94 | /* | |
95 | * Supported types: | |
96 | * | |
97 | * 'F' filename | |
98 | * 'B' block device name | |
99 | * 's' string (accept optional quote) | |
100 | * 'S' it just appends the rest of the string (accept optional quote) | |
101 | * 'O' option string of the form NAME=VALUE,... | |
102 | * parsed according to QemuOptsList given by its name | |
103 | * Example: 'device:O' uses qemu_device_opts. | |
104 | * Restriction: only lists with empty desc are supported | |
105 | * TODO lift the restriction | |
106 | * 'i' 32 bit integer | |
107 | * 'l' target long (32 or 64 bit) | |
108 | * 'M' Non-negative target long (32 or 64 bit), in user mode the | |
109 | * value is multiplied by 2^20 (think Mebibyte) | |
110 | * 'o' octets (aka bytes) | |
111 | * user mode accepts an optional E, e, P, p, T, t, G, g, M, m, | |
112 | * K, k suffix, which multiplies the value by 2^60 for suffixes E | |
113 | * and e, 2^50 for suffixes P and p, 2^40 for suffixes T and t, | |
114 | * 2^30 for suffixes G and g, 2^20 for M and m, 2^10 for K and k | |
115 | * 'T' double | |
116 | * user mode accepts an optional ms, us, ns suffix, | |
117 | * which divides the value by 1e3, 1e6, 1e9, respectively | |
118 | * '/' optional gdb-like print format (like "/10x") | |
119 | * | |
120 | * '?' optional type (for all types, except '/') | |
121 | * '.' other form of optional type (for 'i' and 'l') | |
122 | * 'b' boolean | |
123 | * user mode accepts "on" or "off" | |
124 | * '-' optional parameter (eg. '-f') | |
125 | * | |
126 | */ | |
127 | ||
128 | typedef struct mon_cmd_t { | |
129 | const char *name; | |
130 | const char *args_type; | |
131 | const char *params; | |
132 | const char *help; | |
133 | const char *flags; /* p=preconfig */ | |
134 | void (*cmd)(Monitor *mon, const QDict *qdict); | |
135 | /* @sub_table is a list of 2nd level of commands. If it does not exist, | |
136 | * cmd should be used. If it exists, sub_table[?].cmd should be | |
137 | * used, and cmd of 1st level plays the role of help function. | |
138 | */ | |
139 | struct mon_cmd_t *sub_table; | |
140 | void (*command_completion)(ReadLineState *rs, int nb_args, const char *str); | |
141 | } mon_cmd_t; | |
142 | ||
143 | /* file descriptors passed via SCM_RIGHTS */ | |
144 | typedef struct mon_fd_t mon_fd_t; | |
145 | struct mon_fd_t { | |
146 | char *name; | |
147 | int fd; | |
148 | QLIST_ENTRY(mon_fd_t) next; | |
149 | }; | |
150 | ||
151 | /* file descriptor associated with a file descriptor set */ | |
152 | typedef struct MonFdsetFd MonFdsetFd; | |
153 | struct MonFdsetFd { | |
154 | int fd; | |
155 | bool removed; | |
156 | char *opaque; | |
157 | QLIST_ENTRY(MonFdsetFd) next; | |
158 | }; | |
159 | ||
160 | /* file descriptor set containing fds passed via SCM_RIGHTS */ | |
161 | typedef struct MonFdset MonFdset; | |
162 | struct MonFdset { | |
163 | int64_t id; | |
164 | QLIST_HEAD(, MonFdsetFd) fds; | |
165 | QLIST_HEAD(, MonFdsetFd) dup_fds; | |
166 | QLIST_ENTRY(MonFdset) next; | |
167 | }; | |
168 | ||
169 | typedef struct { | |
170 | JSONMessageParser parser; | |
171 | /* | |
172 | * When a client connects, we're in capabilities negotiation mode. | |
173 | * @commands is &qmp_cap_negotiation_commands then. When command | |
174 | * qmp_capabilities succeeds, we go into command mode, and | |
175 | * @command becomes &qmp_commands. | |
176 | */ | |
177 | QmpCommandList *commands; | |
178 | bool capab_offered[QMP_CAPABILITY__MAX]; /* capabilities offered */ | |
179 | bool capab[QMP_CAPABILITY__MAX]; /* offered and accepted */ | |
180 | /* | |
181 | * Protects qmp request/response queue. | |
182 | * Take monitor_lock first when you need both. | |
183 | */ | |
184 | QemuMutex qmp_queue_lock; | |
185 | /* Input queue that holds all the parsed QMP requests */ | |
186 | GQueue *qmp_requests; | |
187 | } MonitorQMP; | |
188 | ||
189 | /* | |
190 | * To prevent flooding clients, events can be throttled. The | |
191 | * throttling is calculated globally, rather than per-Monitor | |
192 | * instance. | |
193 | */ | |
194 | typedef struct MonitorQAPIEventState { | |
195 | QAPIEvent event; /* Throttling state for this event type and... */ | |
196 | QDict *data; /* ... data, see qapi_event_throttle_equal() */ | |
197 | QEMUTimer *timer; /* Timer for handling delayed events */ | |
198 | QDict *qdict; /* Delayed event (if any) */ | |
199 | } MonitorQAPIEventState; | |
200 | ||
201 | typedef struct { | |
202 | int64_t rate; /* Minimum time (in ns) between two events */ | |
203 | } MonitorQAPIEventConf; | |
204 | ||
205 | struct Monitor { | |
206 | CharBackend chr; | |
207 | int reset_seen; | |
208 | int flags; | |
209 | int suspend_cnt; /* Needs to be accessed atomically */ | |
210 | bool skip_flush; | |
211 | bool use_io_thread; | |
212 | ||
213 | /* | |
214 | * State used only in the thread "owning" the monitor. | |
215 | * If @use_io_thread, this is @mon_iothread. | |
216 | * Else, it's the main thread. | |
217 | * These members can be safely accessed without locks. | |
218 | */ | |
219 | ReadLineState *rs; | |
220 | ||
221 | MonitorQMP qmp; | |
222 | gchar *mon_cpu_path; | |
223 | BlockCompletionFunc *password_completion_cb; | |
224 | void *password_opaque; | |
225 | mon_cmd_t *cmd_table; | |
226 | QTAILQ_ENTRY(Monitor) entry; | |
227 | ||
228 | /* | |
229 | * The per-monitor lock. We can't access guest memory when holding | |
230 | * the lock. | |
231 | */ | |
232 | QemuMutex mon_lock; | |
233 | ||
234 | /* | |
235 | * Members that are protected by the per-monitor lock | |
236 | */ | |
237 | QLIST_HEAD(, mon_fd_t) fds; | |
238 | QString *outbuf; | |
239 | guint out_watch; | |
240 | /* Read under either BQL or mon_lock, written with BQL+mon_lock. */ | |
241 | int mux_out; | |
242 | }; | |
243 | ||
244 | /* Shared monitor I/O thread */ | |
245 | IOThread *mon_iothread; | |
246 | ||
247 | /* Bottom half to dispatch the requests received from I/O thread */ | |
248 | QEMUBH *qmp_dispatcher_bh; | |
249 | ||
250 | struct QMPRequest { | |
251 | /* Owner of the request */ | |
252 | Monitor *mon; | |
253 | /* "id" field of the request */ | |
254 | QObject *id; | |
255 | /* | |
256 | * Request object to be handled or Error to be reported | |
257 | * (exactly one of them is non-null) | |
258 | */ | |
259 | QObject *req; | |
260 | Error *err; | |
261 | }; | |
262 | typedef struct QMPRequest QMPRequest; | |
263 | ||
264 | /* QMP checker flags */ | |
265 | #define QMP_ACCEPT_UNKNOWNS 1 | |
266 | ||
267 | /* Protects mon_list, monitor_qapi_event_state, monitor_destroyed. */ | |
268 | static QemuMutex monitor_lock; | |
269 | static GHashTable *monitor_qapi_event_state; | |
270 | static QTAILQ_HEAD(, Monitor) mon_list; | |
271 | static bool monitor_destroyed; | |
272 | ||
273 | /* Protects mon_fdsets */ | |
274 | static QemuMutex mon_fdsets_lock; | |
275 | static QLIST_HEAD(, MonFdset) mon_fdsets; | |
276 | ||
277 | static int mon_refcount; | |
278 | ||
279 | static mon_cmd_t mon_cmds[]; | |
280 | static mon_cmd_t info_cmds[]; | |
281 | ||
282 | QmpCommandList qmp_commands, qmp_cap_negotiation_commands; | |
283 | ||
284 | __thread Monitor *cur_mon; | |
285 | ||
286 | static void monitor_command_cb(void *opaque, const char *cmdline, | |
287 | void *readline_opaque); | |
288 | ||
289 | /** | |
290 | * Is @mon a QMP monitor? | |
291 | */ | |
292 | static inline bool monitor_is_qmp(const Monitor *mon) | |
293 | { | |
294 | return (mon->flags & MONITOR_USE_CONTROL); | |
295 | } | |
296 | ||
297 | /** | |
298 | * Is @mon is using readline? | |
299 | * Note: not all HMP monitors use readline, e.g., gdbserver has a | |
300 | * non-interactive HMP monitor, so readline is not used there. | |
301 | */ | |
302 | static inline bool monitor_uses_readline(const Monitor *mon) | |
303 | { | |
304 | return mon->flags & MONITOR_USE_READLINE; | |
305 | } | |
306 | ||
307 | static inline bool monitor_is_hmp_non_interactive(const Monitor *mon) | |
308 | { | |
309 | return !monitor_is_qmp(mon) && !monitor_uses_readline(mon); | |
310 | } | |
311 | ||
312 | /* | |
313 | * Return the clock to use for recording an event's time. | |
314 | * It's QEMU_CLOCK_REALTIME, except for qtests it's | |
315 | * QEMU_CLOCK_VIRTUAL, to support testing rate limits. | |
316 | * Beware: result is invalid before configure_accelerator(). | |
317 | */ | |
318 | static inline QEMUClockType monitor_get_event_clock(void) | |
319 | { | |
320 | return qtest_enabled() ? QEMU_CLOCK_VIRTUAL : QEMU_CLOCK_REALTIME; | |
321 | } | |
322 | ||
323 | /** | |
324 | * Is the current monitor, if any, a QMP monitor? | |
325 | */ | |
326 | bool monitor_cur_is_qmp(void) | |
327 | { | |
328 | return cur_mon && monitor_is_qmp(cur_mon); | |
329 | } | |
330 | ||
331 | void monitor_read_command(Monitor *mon, int show_prompt) | |
332 | { | |
333 | if (!mon->rs) | |
334 | return; | |
335 | ||
336 | readline_start(mon->rs, "(qemu) ", 0, monitor_command_cb, NULL); | |
337 | if (show_prompt) | |
338 | readline_show_prompt(mon->rs); | |
339 | } | |
340 | ||
341 | int monitor_read_password(Monitor *mon, ReadLineFunc *readline_func, | |
342 | void *opaque) | |
343 | { | |
344 | if (mon->rs) { | |
345 | readline_start(mon->rs, "Password: ", 1, readline_func, opaque); | |
346 | /* prompt is printed on return from the command handler */ | |
347 | return 0; | |
348 | } else { | |
349 | monitor_printf(mon, "terminal does not support password prompting\n"); | |
350 | return -ENOTTY; | |
351 | } | |
352 | } | |
353 | ||
354 | static void qmp_request_free(QMPRequest *req) | |
355 | { | |
356 | qobject_unref(req->id); | |
357 | qobject_unref(req->req); | |
358 | error_free(req->err); | |
359 | g_free(req); | |
360 | } | |
361 | ||
362 | /* Caller must hold mon->qmp.qmp_queue_lock */ | |
363 | static void monitor_qmp_cleanup_req_queue_locked(Monitor *mon) | |
364 | { | |
365 | while (!g_queue_is_empty(mon->qmp.qmp_requests)) { | |
366 | qmp_request_free(g_queue_pop_head(mon->qmp.qmp_requests)); | |
367 | } | |
368 | } | |
369 | ||
370 | static void monitor_qmp_cleanup_queues(Monitor *mon) | |
371 | { | |
372 | qemu_mutex_lock(&mon->qmp.qmp_queue_lock); | |
373 | monitor_qmp_cleanup_req_queue_locked(mon); | |
374 | qemu_mutex_unlock(&mon->qmp.qmp_queue_lock); | |
375 | } | |
376 | ||
377 | ||
378 | static void monitor_flush_locked(Monitor *mon); | |
379 | ||
380 | static gboolean monitor_unblocked(GIOChannel *chan, GIOCondition cond, | |
381 | void *opaque) | |
382 | { | |
383 | Monitor *mon = opaque; | |
384 | ||
385 | qemu_mutex_lock(&mon->mon_lock); | |
386 | mon->out_watch = 0; | |
387 | monitor_flush_locked(mon); | |
388 | qemu_mutex_unlock(&mon->mon_lock); | |
389 | return FALSE; | |
390 | } | |
391 | ||
392 | /* Caller must hold mon->mon_lock */ | |
393 | static void monitor_flush_locked(Monitor *mon) | |
394 | { | |
395 | int rc; | |
396 | size_t len; | |
397 | const char *buf; | |
398 | ||
399 | if (mon->skip_flush) { | |
400 | return; | |
401 | } | |
402 | ||
403 | buf = qstring_get_str(mon->outbuf); | |
404 | len = qstring_get_length(mon->outbuf); | |
405 | ||
406 | if (len && !mon->mux_out) { | |
407 | rc = qemu_chr_fe_write(&mon->chr, (const uint8_t *) buf, len); | |
408 | if ((rc < 0 && errno != EAGAIN) || (rc == len)) { | |
409 | /* all flushed or error */ | |
410 | qobject_unref(mon->outbuf); | |
411 | mon->outbuf = qstring_new(); | |
412 | return; | |
413 | } | |
414 | if (rc > 0) { | |
415 | /* partial write */ | |
416 | QString *tmp = qstring_from_str(buf + rc); | |
417 | qobject_unref(mon->outbuf); | |
418 | mon->outbuf = tmp; | |
419 | } | |
420 | if (mon->out_watch == 0) { | |
421 | mon->out_watch = | |
422 | qemu_chr_fe_add_watch(&mon->chr, G_IO_OUT | G_IO_HUP, | |
423 | monitor_unblocked, mon); | |
424 | } | |
425 | } | |
426 | } | |
427 | ||
428 | void monitor_flush(Monitor *mon) | |
429 | { | |
430 | qemu_mutex_lock(&mon->mon_lock); | |
431 | monitor_flush_locked(mon); | |
432 | qemu_mutex_unlock(&mon->mon_lock); | |
433 | } | |
434 | ||
435 | /* flush at every end of line */ | |
436 | static void monitor_puts(Monitor *mon, const char *str) | |
437 | { | |
438 | char c; | |
439 | ||
440 | qemu_mutex_lock(&mon->mon_lock); | |
441 | for(;;) { | |
442 | c = *str++; | |
443 | if (c == '\0') | |
444 | break; | |
445 | if (c == '\n') { | |
446 | qstring_append_chr(mon->outbuf, '\r'); | |
447 | } | |
448 | qstring_append_chr(mon->outbuf, c); | |
449 | if (c == '\n') { | |
450 | monitor_flush_locked(mon); | |
451 | } | |
452 | } | |
453 | qemu_mutex_unlock(&mon->mon_lock); | |
454 | } | |
455 | ||
456 | void monitor_vprintf(Monitor *mon, const char *fmt, va_list ap) | |
457 | { | |
458 | char *buf; | |
459 | ||
460 | if (!mon) | |
461 | return; | |
462 | ||
463 | if (monitor_is_qmp(mon)) { | |
464 | return; | |
465 | } | |
466 | ||
467 | buf = g_strdup_vprintf(fmt, ap); | |
468 | monitor_puts(mon, buf); | |
469 | g_free(buf); | |
470 | } | |
471 | ||
472 | void monitor_printf(Monitor *mon, const char *fmt, ...) | |
473 | { | |
474 | va_list ap; | |
475 | va_start(ap, fmt); | |
476 | monitor_vprintf(mon, fmt, ap); | |
477 | va_end(ap); | |
478 | } | |
479 | ||
480 | int monitor_fprintf(FILE *stream, const char *fmt, ...) | |
481 | { | |
482 | va_list ap; | |
483 | va_start(ap, fmt); | |
484 | monitor_vprintf((Monitor *)stream, fmt, ap); | |
485 | va_end(ap); | |
486 | return 0; | |
487 | } | |
488 | ||
489 | static void qmp_send_response(Monitor *mon, const QDict *rsp) | |
490 | { | |
491 | const QObject *data = QOBJECT(rsp); | |
492 | QString *json; | |
493 | ||
494 | json = mon->flags & MONITOR_USE_PRETTY ? qobject_to_json_pretty(data) : | |
495 | qobject_to_json(data); | |
496 | assert(json != NULL); | |
497 | ||
498 | qstring_append_chr(json, '\n'); | |
499 | monitor_puts(mon, qstring_get_str(json)); | |
500 | ||
501 | qobject_unref(json); | |
502 | } | |
503 | ||
504 | static MonitorQAPIEventConf monitor_qapi_event_conf[QAPI_EVENT__MAX] = { | |
505 | /* Limit guest-triggerable events to 1 per second */ | |
506 | [QAPI_EVENT_RTC_CHANGE] = { 1000 * SCALE_MS }, | |
507 | [QAPI_EVENT_WATCHDOG] = { 1000 * SCALE_MS }, | |
508 | [QAPI_EVENT_BALLOON_CHANGE] = { 1000 * SCALE_MS }, | |
509 | [QAPI_EVENT_QUORUM_REPORT_BAD] = { 1000 * SCALE_MS }, | |
510 | [QAPI_EVENT_QUORUM_FAILURE] = { 1000 * SCALE_MS }, | |
511 | [QAPI_EVENT_VSERPORT_CHANGE] = { 1000 * SCALE_MS }, | |
512 | }; | |
513 | ||
514 | /* | |
515 | * Broadcast an event to all monitors. | |
516 | * @qdict is the event object. Its member "event" must match @event. | |
517 | * Caller must hold monitor_lock. | |
518 | */ | |
519 | static void monitor_qapi_event_emit(QAPIEvent event, QDict *qdict) | |
520 | { | |
521 | Monitor *mon; | |
522 | ||
523 | trace_monitor_protocol_event_emit(event, qdict); | |
524 | QTAILQ_FOREACH(mon, &mon_list, entry) { | |
525 | if (monitor_is_qmp(mon) | |
526 | && mon->qmp.commands != &qmp_cap_negotiation_commands) { | |
527 | qmp_send_response(mon, qdict); | |
528 | } | |
529 | } | |
530 | } | |
531 | ||
532 | static void monitor_qapi_event_handler(void *opaque); | |
533 | ||
534 | /* | |
535 | * Queue a new event for emission to Monitor instances, | |
536 | * applying any rate limiting if required. | |
537 | */ | |
538 | static void | |
539 | monitor_qapi_event_queue_no_reenter(QAPIEvent event, QDict *qdict) | |
540 | { | |
541 | MonitorQAPIEventConf *evconf; | |
542 | MonitorQAPIEventState *evstate; | |
543 | ||
544 | assert(event < QAPI_EVENT__MAX); | |
545 | evconf = &monitor_qapi_event_conf[event]; | |
546 | trace_monitor_protocol_event_queue(event, qdict, evconf->rate); | |
547 | ||
548 | qemu_mutex_lock(&monitor_lock); | |
549 | ||
550 | if (!evconf->rate) { | |
551 | /* Unthrottled event */ | |
552 | monitor_qapi_event_emit(event, qdict); | |
553 | } else { | |
554 | QDict *data = qobject_to(QDict, qdict_get(qdict, "data")); | |
555 | MonitorQAPIEventState key = { .event = event, .data = data }; | |
556 | ||
557 | evstate = g_hash_table_lookup(monitor_qapi_event_state, &key); | |
558 | assert(!evstate || timer_pending(evstate->timer)); | |
559 | ||
560 | if (evstate) { | |
561 | /* | |
562 | * Timer is pending for (at least) evconf->rate ns after | |
563 | * last send. Store event for sending when timer fires, | |
564 | * replacing a prior stored event if any. | |
565 | */ | |
566 | qobject_unref(evstate->qdict); | |
567 | evstate->qdict = qobject_ref(qdict); | |
568 | } else { | |
569 | /* | |
570 | * Last send was (at least) evconf->rate ns ago. | |
571 | * Send immediately, and arm the timer to call | |
572 | * monitor_qapi_event_handler() in evconf->rate ns. Any | |
573 | * events arriving before then will be delayed until then. | |
574 | */ | |
575 | int64_t now = qemu_clock_get_ns(monitor_get_event_clock()); | |
576 | ||
577 | monitor_qapi_event_emit(event, qdict); | |
578 | ||
579 | evstate = g_new(MonitorQAPIEventState, 1); | |
580 | evstate->event = event; | |
581 | evstate->data = qobject_ref(data); | |
582 | evstate->qdict = NULL; | |
583 | evstate->timer = timer_new_ns(monitor_get_event_clock(), | |
584 | monitor_qapi_event_handler, | |
585 | evstate); | |
586 | g_hash_table_add(monitor_qapi_event_state, evstate); | |
587 | timer_mod_ns(evstate->timer, now + evconf->rate); | |
588 | } | |
589 | } | |
590 | ||
591 | qemu_mutex_unlock(&monitor_lock); | |
592 | } | |
593 | ||
594 | void qapi_event_emit(QAPIEvent event, QDict *qdict) | |
595 | { | |
596 | /* | |
597 | * monitor_qapi_event_queue_no_reenter() is not reentrant: it | |
598 | * would deadlock on monitor_lock. Work around by queueing | |
599 | * events in thread-local storage. | |
600 | * TODO: remove this, make it re-enter safe. | |
601 | */ | |
602 | typedef struct MonitorQapiEvent { | |
603 | QAPIEvent event; | |
604 | QDict *qdict; | |
605 | QSIMPLEQ_ENTRY(MonitorQapiEvent) entry; | |
606 | } MonitorQapiEvent; | |
607 | static __thread QSIMPLEQ_HEAD(, MonitorQapiEvent) event_queue; | |
608 | static __thread bool reentered; | |
609 | MonitorQapiEvent *ev; | |
610 | ||
611 | if (!reentered) { | |
612 | QSIMPLEQ_INIT(&event_queue); | |
613 | } | |
614 | ||
615 | ev = g_new(MonitorQapiEvent, 1); | |
616 | ev->qdict = qobject_ref(qdict); | |
617 | ev->event = event; | |
618 | QSIMPLEQ_INSERT_TAIL(&event_queue, ev, entry); | |
619 | if (reentered) { | |
620 | return; | |
621 | } | |
622 | ||
623 | reentered = true; | |
624 | ||
625 | while ((ev = QSIMPLEQ_FIRST(&event_queue)) != NULL) { | |
626 | QSIMPLEQ_REMOVE_HEAD(&event_queue, entry); | |
627 | monitor_qapi_event_queue_no_reenter(ev->event, ev->qdict); | |
628 | qobject_unref(ev->qdict); | |
629 | g_free(ev); | |
630 | } | |
631 | ||
632 | reentered = false; | |
633 | } | |
634 | ||
635 | /* | |
636 | * This function runs evconf->rate ns after sending a throttled | |
637 | * event. | |
638 | * If another event has since been stored, send it. | |
639 | */ | |
640 | static void monitor_qapi_event_handler(void *opaque) | |
641 | { | |
642 | MonitorQAPIEventState *evstate = opaque; | |
643 | MonitorQAPIEventConf *evconf = &monitor_qapi_event_conf[evstate->event]; | |
644 | ||
645 | trace_monitor_protocol_event_handler(evstate->event, evstate->qdict); | |
646 | qemu_mutex_lock(&monitor_lock); | |
647 | ||
648 | if (evstate->qdict) { | |
649 | int64_t now = qemu_clock_get_ns(monitor_get_event_clock()); | |
650 | ||
651 | monitor_qapi_event_emit(evstate->event, evstate->qdict); | |
652 | qobject_unref(evstate->qdict); | |
653 | evstate->qdict = NULL; | |
654 | timer_mod_ns(evstate->timer, now + evconf->rate); | |
655 | } else { | |
656 | g_hash_table_remove(monitor_qapi_event_state, evstate); | |
657 | qobject_unref(evstate->data); | |
658 | timer_free(evstate->timer); | |
659 | g_free(evstate); | |
660 | } | |
661 | ||
662 | qemu_mutex_unlock(&monitor_lock); | |
663 | } | |
664 | ||
665 | static unsigned int qapi_event_throttle_hash(const void *key) | |
666 | { | |
667 | const MonitorQAPIEventState *evstate = key; | |
668 | unsigned int hash = evstate->event * 255; | |
669 | ||
670 | if (evstate->event == QAPI_EVENT_VSERPORT_CHANGE) { | |
671 | hash += g_str_hash(qdict_get_str(evstate->data, "id")); | |
672 | } | |
673 | ||
674 | if (evstate->event == QAPI_EVENT_QUORUM_REPORT_BAD) { | |
675 | hash += g_str_hash(qdict_get_str(evstate->data, "node-name")); | |
676 | } | |
677 | ||
678 | return hash; | |
679 | } | |
680 | ||
681 | static gboolean qapi_event_throttle_equal(const void *a, const void *b) | |
682 | { | |
683 | const MonitorQAPIEventState *eva = a; | |
684 | const MonitorQAPIEventState *evb = b; | |
685 | ||
686 | if (eva->event != evb->event) { | |
687 | return FALSE; | |
688 | } | |
689 | ||
690 | if (eva->event == QAPI_EVENT_VSERPORT_CHANGE) { | |
691 | return !strcmp(qdict_get_str(eva->data, "id"), | |
692 | qdict_get_str(evb->data, "id")); | |
693 | } | |
694 | ||
695 | if (eva->event == QAPI_EVENT_QUORUM_REPORT_BAD) { | |
696 | return !strcmp(qdict_get_str(eva->data, "node-name"), | |
697 | qdict_get_str(evb->data, "node-name")); | |
698 | } | |
699 | ||
700 | return TRUE; | |
701 | } | |
702 | ||
703 | static void monitor_qapi_event_init(void) | |
704 | { | |
705 | monitor_qapi_event_state = g_hash_table_new(qapi_event_throttle_hash, | |
706 | qapi_event_throttle_equal); | |
707 | } | |
708 | ||
709 | static void handle_hmp_command(Monitor *mon, const char *cmdline); | |
710 | ||
711 | static void monitor_iothread_init(void); | |
712 | ||
713 | static void monitor_data_init(Monitor *mon, bool skip_flush, | |
714 | bool use_io_thread) | |
715 | { | |
716 | if (use_io_thread && !mon_iothread) { | |
717 | monitor_iothread_init(); | |
718 | } | |
719 | memset(mon, 0, sizeof(Monitor)); | |
720 | qemu_mutex_init(&mon->mon_lock); | |
721 | qemu_mutex_init(&mon->qmp.qmp_queue_lock); | |
722 | mon->outbuf = qstring_new(); | |
723 | /* Use *mon_cmds by default. */ | |
724 | mon->cmd_table = mon_cmds; | |
725 | mon->skip_flush = skip_flush; | |
726 | mon->use_io_thread = use_io_thread; | |
727 | mon->qmp.qmp_requests = g_queue_new(); | |
728 | } | |
729 | ||
730 | static void monitor_data_destroy(Monitor *mon) | |
731 | { | |
732 | g_free(mon->mon_cpu_path); | |
733 | qemu_chr_fe_deinit(&mon->chr, false); | |
734 | if (monitor_is_qmp(mon)) { | |
735 | json_message_parser_destroy(&mon->qmp.parser); | |
736 | } | |
737 | readline_free(mon->rs); | |
738 | qobject_unref(mon->outbuf); | |
739 | qemu_mutex_destroy(&mon->mon_lock); | |
740 | qemu_mutex_destroy(&mon->qmp.qmp_queue_lock); | |
741 | monitor_qmp_cleanup_req_queue_locked(mon); | |
742 | g_queue_free(mon->qmp.qmp_requests); | |
743 | } | |
744 | ||
745 | char *qmp_human_monitor_command(const char *command_line, bool has_cpu_index, | |
746 | int64_t cpu_index, Error **errp) | |
747 | { | |
748 | char *output = NULL; | |
749 | Monitor *old_mon, hmp; | |
750 | ||
751 | monitor_data_init(&hmp, true, false); | |
752 | ||
753 | old_mon = cur_mon; | |
754 | cur_mon = &hmp; | |
755 | ||
756 | if (has_cpu_index) { | |
757 | int ret = monitor_set_cpu(cpu_index); | |
758 | if (ret < 0) { | |
759 | cur_mon = old_mon; | |
760 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "cpu-index", | |
761 | "a CPU number"); | |
762 | goto out; | |
763 | } | |
764 | } | |
765 | ||
766 | handle_hmp_command(&hmp, command_line); | |
767 | cur_mon = old_mon; | |
768 | ||
769 | qemu_mutex_lock(&hmp.mon_lock); | |
770 | if (qstring_get_length(hmp.outbuf) > 0) { | |
771 | output = g_strdup(qstring_get_str(hmp.outbuf)); | |
772 | } else { | |
773 | output = g_strdup(""); | |
774 | } | |
775 | qemu_mutex_unlock(&hmp.mon_lock); | |
776 | ||
777 | out: | |
778 | monitor_data_destroy(&hmp); | |
779 | return output; | |
780 | } | |
781 | ||
782 | static int compare_cmd(const char *name, const char *list) | |
783 | { | |
784 | const char *p, *pstart; | |
785 | int len; | |
786 | len = strlen(name); | |
787 | p = list; | |
788 | for(;;) { | |
789 | pstart = p; | |
790 | p = qemu_strchrnul(p, '|'); | |
791 | if ((p - pstart) == len && !memcmp(pstart, name, len)) | |
792 | return 1; | |
793 | if (*p == '\0') | |
794 | break; | |
795 | p++; | |
796 | } | |
797 | return 0; | |
798 | } | |
799 | ||
800 | static int get_str(char *buf, int buf_size, const char **pp) | |
801 | { | |
802 | const char *p; | |
803 | char *q; | |
804 | int c; | |
805 | ||
806 | q = buf; | |
807 | p = *pp; | |
808 | while (qemu_isspace(*p)) { | |
809 | p++; | |
810 | } | |
811 | if (*p == '\0') { | |
812 | fail: | |
813 | *q = '\0'; | |
814 | *pp = p; | |
815 | return -1; | |
816 | } | |
817 | if (*p == '\"') { | |
818 | p++; | |
819 | while (*p != '\0' && *p != '\"') { | |
820 | if (*p == '\\') { | |
821 | p++; | |
822 | c = *p++; | |
823 | switch (c) { | |
824 | case 'n': | |
825 | c = '\n'; | |
826 | break; | |
827 | case 'r': | |
828 | c = '\r'; | |
829 | break; | |
830 | case '\\': | |
831 | case '\'': | |
832 | case '\"': | |
833 | break; | |
834 | default: | |
835 | printf("unsupported escape code: '\\%c'\n", c); | |
836 | goto fail; | |
837 | } | |
838 | if ((q - buf) < buf_size - 1) { | |
839 | *q++ = c; | |
840 | } | |
841 | } else { | |
842 | if ((q - buf) < buf_size - 1) { | |
843 | *q++ = *p; | |
844 | } | |
845 | p++; | |
846 | } | |
847 | } | |
848 | if (*p != '\"') { | |
849 | printf("unterminated string\n"); | |
850 | goto fail; | |
851 | } | |
852 | p++; | |
853 | } else { | |
854 | while (*p != '\0' && !qemu_isspace(*p)) { | |
855 | if ((q - buf) < buf_size - 1) { | |
856 | *q++ = *p; | |
857 | } | |
858 | p++; | |
859 | } | |
860 | } | |
861 | *q = '\0'; | |
862 | *pp = p; | |
863 | return 0; | |
864 | } | |
865 | ||
866 | #define MAX_ARGS 16 | |
867 | ||
868 | static void free_cmdline_args(char **args, int nb_args) | |
869 | { | |
870 | int i; | |
871 | ||
872 | assert(nb_args <= MAX_ARGS); | |
873 | ||
874 | for (i = 0; i < nb_args; i++) { | |
875 | g_free(args[i]); | |
876 | } | |
877 | ||
878 | } | |
879 | ||
880 | /* | |
881 | * Parse the command line to get valid args. | |
882 | * @cmdline: command line to be parsed. | |
883 | * @pnb_args: location to store the number of args, must NOT be NULL. | |
884 | * @args: location to store the args, which should be freed by caller, must | |
885 | * NOT be NULL. | |
886 | * | |
887 | * Returns 0 on success, negative on failure. | |
888 | * | |
889 | * NOTE: this parser is an approximate form of the real command parser. Number | |
890 | * of args have a limit of MAX_ARGS. If cmdline contains more, it will | |
891 | * return with failure. | |
892 | */ | |
893 | static int parse_cmdline(const char *cmdline, | |
894 | int *pnb_args, char **args) | |
895 | { | |
896 | const char *p; | |
897 | int nb_args, ret; | |
898 | char buf[1024]; | |
899 | ||
900 | p = cmdline; | |
901 | nb_args = 0; | |
902 | for (;;) { | |
903 | while (qemu_isspace(*p)) { | |
904 | p++; | |
905 | } | |
906 | if (*p == '\0') { | |
907 | break; | |
908 | } | |
909 | if (nb_args >= MAX_ARGS) { | |
910 | goto fail; | |
911 | } | |
912 | ret = get_str(buf, sizeof(buf), &p); | |
913 | if (ret < 0) { | |
914 | goto fail; | |
915 | } | |
916 | args[nb_args] = g_strdup(buf); | |
917 | nb_args++; | |
918 | } | |
919 | *pnb_args = nb_args; | |
920 | return 0; | |
921 | ||
922 | fail: | |
923 | free_cmdline_args(args, nb_args); | |
924 | return -1; | |
925 | } | |
926 | ||
927 | /* | |
928 | * Can command @cmd be executed in preconfig state? | |
929 | */ | |
930 | static bool cmd_can_preconfig(const mon_cmd_t *cmd) | |
931 | { | |
932 | if (!cmd->flags) { | |
933 | return false; | |
934 | } | |
935 | ||
936 | return strchr(cmd->flags, 'p'); | |
937 | } | |
938 | ||
939 | static void help_cmd_dump_one(Monitor *mon, | |
940 | const mon_cmd_t *cmd, | |
941 | char **prefix_args, | |
942 | int prefix_args_nb) | |
943 | { | |
944 | int i; | |
945 | ||
946 | if (runstate_check(RUN_STATE_PRECONFIG) && !cmd_can_preconfig(cmd)) { | |
947 | return; | |
948 | } | |
949 | ||
950 | for (i = 0; i < prefix_args_nb; i++) { | |
951 | monitor_printf(mon, "%s ", prefix_args[i]); | |
952 | } | |
953 | monitor_printf(mon, "%s %s -- %s\n", cmd->name, cmd->params, cmd->help); | |
954 | } | |
955 | ||
956 | /* @args[@arg_index] is the valid command need to find in @cmds */ | |
957 | static void help_cmd_dump(Monitor *mon, const mon_cmd_t *cmds, | |
958 | char **args, int nb_args, int arg_index) | |
959 | { | |
960 | const mon_cmd_t *cmd; | |
961 | size_t i; | |
962 | ||
963 | /* No valid arg need to compare with, dump all in *cmds */ | |
964 | if (arg_index >= nb_args) { | |
965 | for (cmd = cmds; cmd->name != NULL; cmd++) { | |
966 | help_cmd_dump_one(mon, cmd, args, arg_index); | |
967 | } | |
968 | return; | |
969 | } | |
970 | ||
971 | /* Find one entry to dump */ | |
972 | for (cmd = cmds; cmd->name != NULL; cmd++) { | |
973 | if (compare_cmd(args[arg_index], cmd->name) && | |
974 | ((!runstate_check(RUN_STATE_PRECONFIG) || | |
975 | cmd_can_preconfig(cmd)))) { | |
976 | if (cmd->sub_table) { | |
977 | /* continue with next arg */ | |
978 | help_cmd_dump(mon, cmd->sub_table, | |
979 | args, nb_args, arg_index + 1); | |
980 | } else { | |
981 | help_cmd_dump_one(mon, cmd, args, arg_index); | |
982 | } | |
983 | return; | |
984 | } | |
985 | } | |
986 | ||
987 | /* Command not found */ | |
988 | monitor_printf(mon, "unknown command: '"); | |
989 | for (i = 0; i <= arg_index; i++) { | |
990 | monitor_printf(mon, "%s%s", args[i], i == arg_index ? "'\n" : " "); | |
991 | } | |
992 | } | |
993 | ||
994 | static void help_cmd(Monitor *mon, const char *name) | |
995 | { | |
996 | char *args[MAX_ARGS]; | |
997 | int nb_args = 0; | |
998 | ||
999 | /* 1. parse user input */ | |
1000 | if (name) { | |
1001 | /* special case for log, directly dump and return */ | |
1002 | if (!strcmp(name, "log")) { | |
1003 | const QEMULogItem *item; | |
1004 | monitor_printf(mon, "Log items (comma separated):\n"); | |
1005 | monitor_printf(mon, "%-10s %s\n", "none", "remove all logs"); | |
1006 | for (item = qemu_log_items; item->mask != 0; item++) { | |
1007 | monitor_printf(mon, "%-10s %s\n", item->name, item->help); | |
1008 | } | |
1009 | return; | |
1010 | } | |
1011 | ||
1012 | if (parse_cmdline(name, &nb_args, args) < 0) { | |
1013 | return; | |
1014 | } | |
1015 | } | |
1016 | ||
1017 | /* 2. dump the contents according to parsed args */ | |
1018 | help_cmd_dump(mon, mon->cmd_table, args, nb_args, 0); | |
1019 | ||
1020 | free_cmdline_args(args, nb_args); | |
1021 | } | |
1022 | ||
1023 | static void do_help_cmd(Monitor *mon, const QDict *qdict) | |
1024 | { | |
1025 | help_cmd(mon, qdict_get_try_str(qdict, "name")); | |
1026 | } | |
1027 | ||
1028 | static void hmp_trace_event(Monitor *mon, const QDict *qdict) | |
1029 | { | |
1030 | const char *tp_name = qdict_get_str(qdict, "name"); | |
1031 | bool new_state = qdict_get_bool(qdict, "option"); | |
1032 | bool has_vcpu = qdict_haskey(qdict, "vcpu"); | |
1033 | int vcpu = qdict_get_try_int(qdict, "vcpu", 0); | |
1034 | Error *local_err = NULL; | |
1035 | ||
1036 | if (vcpu < 0) { | |
1037 | monitor_printf(mon, "argument vcpu must be positive"); | |
1038 | return; | |
1039 | } | |
1040 | ||
1041 | qmp_trace_event_set_state(tp_name, new_state, true, true, has_vcpu, vcpu, &local_err); | |
1042 | if (local_err) { | |
1043 | error_report_err(local_err); | |
1044 | } | |
1045 | } | |
1046 | ||
1047 | #ifdef CONFIG_TRACE_SIMPLE | |
1048 | static void hmp_trace_file(Monitor *mon, const QDict *qdict) | |
1049 | { | |
1050 | const char *op = qdict_get_try_str(qdict, "op"); | |
1051 | const char *arg = qdict_get_try_str(qdict, "arg"); | |
1052 | ||
1053 | if (!op) { | |
1054 | st_print_trace_file_status((FILE *)mon, &monitor_fprintf); | |
1055 | } else if (!strcmp(op, "on")) { | |
1056 | st_set_trace_file_enabled(true); | |
1057 | } else if (!strcmp(op, "off")) { | |
1058 | st_set_trace_file_enabled(false); | |
1059 | } else if (!strcmp(op, "flush")) { | |
1060 | st_flush_trace_buffer(); | |
1061 | } else if (!strcmp(op, "set")) { | |
1062 | if (arg) { | |
1063 | st_set_trace_file(arg); | |
1064 | } | |
1065 | } else { | |
1066 | monitor_printf(mon, "unexpected argument \"%s\"\n", op); | |
1067 | help_cmd(mon, "trace-file"); | |
1068 | } | |
1069 | } | |
1070 | #endif | |
1071 | ||
1072 | static void hmp_info_help(Monitor *mon, const QDict *qdict) | |
1073 | { | |
1074 | help_cmd(mon, "info"); | |
1075 | } | |
1076 | ||
1077 | static void query_commands_cb(QmpCommand *cmd, void *opaque) | |
1078 | { | |
1079 | CommandInfoList *info, **list = opaque; | |
1080 | ||
1081 | if (!cmd->enabled) { | |
1082 | return; | |
1083 | } | |
1084 | ||
1085 | info = g_malloc0(sizeof(*info)); | |
1086 | info->value = g_malloc0(sizeof(*info->value)); | |
1087 | info->value->name = g_strdup(cmd->name); | |
1088 | info->next = *list; | |
1089 | *list = info; | |
1090 | } | |
1091 | ||
1092 | CommandInfoList *qmp_query_commands(Error **errp) | |
1093 | { | |
1094 | CommandInfoList *list = NULL; | |
1095 | ||
1096 | qmp_for_each_command(cur_mon->qmp.commands, query_commands_cb, &list); | |
1097 | ||
1098 | return list; | |
1099 | } | |
1100 | ||
1101 | EventInfoList *qmp_query_events(Error **errp) | |
1102 | { | |
1103 | /* | |
1104 | * TODO This deprecated command is the only user of | |
1105 | * QAPIEvent_str() and QAPIEvent_lookup[]. When the command goes, | |
1106 | * they should go, too. | |
1107 | */ | |
1108 | EventInfoList *info, *ev_list = NULL; | |
1109 | QAPIEvent e; | |
1110 | ||
1111 | for (e = 0 ; e < QAPI_EVENT__MAX ; e++) { | |
1112 | const char *event_name = QAPIEvent_str(e); | |
1113 | assert(event_name != NULL); | |
1114 | info = g_malloc0(sizeof(*info)); | |
1115 | info->value = g_malloc0(sizeof(*info->value)); | |
1116 | info->value->name = g_strdup(event_name); | |
1117 | ||
1118 | info->next = ev_list; | |
1119 | ev_list = info; | |
1120 | } | |
1121 | ||
1122 | return ev_list; | |
1123 | } | |
1124 | ||
1125 | /* | |
1126 | * Minor hack: generated marshalling suppressed for this command | |
1127 | * ('gen': false in the schema) so we can parse the JSON string | |
1128 | * directly into QObject instead of first parsing it with | |
1129 | * visit_type_SchemaInfoList() into a SchemaInfoList, then marshal it | |
1130 | * to QObject with generated output marshallers, every time. Instead, | |
1131 | * we do it in test-qobject-input-visitor.c, just to make sure | |
1132 | * qapi-gen.py's output actually conforms to the schema. | |
1133 | */ | |
1134 | static void qmp_query_qmp_schema(QDict *qdict, QObject **ret_data, | |
1135 | Error **errp) | |
1136 | { | |
1137 | *ret_data = qobject_from_qlit(&qmp_schema_qlit); | |
1138 | } | |
1139 | ||
1140 | static void monitor_init_qmp_commands(void) | |
1141 | { | |
1142 | /* | |
1143 | * Two command lists: | |
1144 | * - qmp_commands contains all QMP commands | |
1145 | * - qmp_cap_negotiation_commands contains just | |
1146 | * "qmp_capabilities", to enforce capability negotiation | |
1147 | */ | |
1148 | ||
1149 | qmp_init_marshal(&qmp_commands); | |
1150 | ||
1151 | qmp_register_command(&qmp_commands, "query-qmp-schema", | |
1152 | qmp_query_qmp_schema, QCO_ALLOW_PRECONFIG); | |
1153 | qmp_register_command(&qmp_commands, "device_add", qmp_device_add, | |
1154 | QCO_NO_OPTIONS); | |
1155 | qmp_register_command(&qmp_commands, "netdev_add", qmp_netdev_add, | |
1156 | QCO_NO_OPTIONS); | |
1157 | ||
1158 | QTAILQ_INIT(&qmp_cap_negotiation_commands); | |
1159 | qmp_register_command(&qmp_cap_negotiation_commands, "qmp_capabilities", | |
1160 | qmp_marshal_qmp_capabilities, QCO_ALLOW_PRECONFIG); | |
1161 | } | |
1162 | ||
1163 | static bool qmp_oob_enabled(Monitor *mon) | |
1164 | { | |
1165 | return mon->qmp.capab[QMP_CAPABILITY_OOB]; | |
1166 | } | |
1167 | ||
1168 | static void monitor_qmp_caps_reset(Monitor *mon) | |
1169 | { | |
1170 | memset(mon->qmp.capab_offered, 0, sizeof(mon->qmp.capab_offered)); | |
1171 | memset(mon->qmp.capab, 0, sizeof(mon->qmp.capab)); | |
1172 | mon->qmp.capab_offered[QMP_CAPABILITY_OOB] = mon->use_io_thread; | |
1173 | } | |
1174 | ||
1175 | /* | |
1176 | * Accept QMP capabilities in @list for @mon. | |
1177 | * On success, set mon->qmp.capab[], and return true. | |
1178 | * On error, set @errp, and return false. | |
1179 | */ | |
1180 | static bool qmp_caps_accept(Monitor *mon, QMPCapabilityList *list, | |
1181 | Error **errp) | |
1182 | { | |
1183 | GString *unavailable = NULL; | |
1184 | bool capab[QMP_CAPABILITY__MAX]; | |
1185 | ||
1186 | memset(capab, 0, sizeof(capab)); | |
1187 | ||
1188 | for (; list; list = list->next) { | |
1189 | if (!mon->qmp.capab_offered[list->value]) { | |
1190 | if (!unavailable) { | |
1191 | unavailable = g_string_new(QMPCapability_str(list->value)); | |
1192 | } else { | |
1193 | g_string_append_printf(unavailable, ", %s", | |
1194 | QMPCapability_str(list->value)); | |
1195 | } | |
1196 | } | |
1197 | capab[list->value] = true; | |
1198 | } | |
1199 | ||
1200 | if (unavailable) { | |
1201 | error_setg(errp, "Capability %s not available", unavailable->str); | |
1202 | g_string_free(unavailable, true); | |
1203 | return false; | |
1204 | } | |
1205 | ||
1206 | memcpy(mon->qmp.capab, capab, sizeof(capab)); | |
1207 | return true; | |
1208 | } | |
1209 | ||
1210 | void qmp_qmp_capabilities(bool has_enable, QMPCapabilityList *enable, | |
1211 | Error **errp) | |
1212 | { | |
1213 | if (cur_mon->qmp.commands == &qmp_commands) { | |
1214 | error_set(errp, ERROR_CLASS_COMMAND_NOT_FOUND, | |
1215 | "Capabilities negotiation is already complete, command " | |
1216 | "ignored"); | |
1217 | return; | |
1218 | } | |
1219 | ||
1220 | if (!qmp_caps_accept(cur_mon, enable, errp)) { | |
1221 | return; | |
1222 | } | |
1223 | ||
1224 | cur_mon->qmp.commands = &qmp_commands; | |
1225 | } | |
1226 | ||
1227 | /* Set the current CPU defined by the user. Callers must hold BQL. */ | |
1228 | int monitor_set_cpu(int cpu_index) | |
1229 | { | |
1230 | CPUState *cpu; | |
1231 | ||
1232 | cpu = qemu_get_cpu(cpu_index); | |
1233 | if (cpu == NULL) { | |
1234 | return -1; | |
1235 | } | |
1236 | g_free(cur_mon->mon_cpu_path); | |
1237 | cur_mon->mon_cpu_path = object_get_canonical_path(OBJECT(cpu)); | |
1238 | return 0; | |
1239 | } | |
1240 | ||
1241 | /* Callers must hold BQL. */ | |
1242 | static CPUState *mon_get_cpu_sync(bool synchronize) | |
1243 | { | |
1244 | CPUState *cpu; | |
1245 | ||
1246 | if (cur_mon->mon_cpu_path) { | |
1247 | cpu = (CPUState *) object_resolve_path_type(cur_mon->mon_cpu_path, | |
1248 | TYPE_CPU, NULL); | |
1249 | if (!cpu) { | |
1250 | g_free(cur_mon->mon_cpu_path); | |
1251 | cur_mon->mon_cpu_path = NULL; | |
1252 | } | |
1253 | } | |
1254 | if (!cur_mon->mon_cpu_path) { | |
1255 | if (!first_cpu) { | |
1256 | return NULL; | |
1257 | } | |
1258 | monitor_set_cpu(first_cpu->cpu_index); | |
1259 | cpu = first_cpu; | |
1260 | } | |
1261 | if (synchronize) { | |
1262 | cpu_synchronize_state(cpu); | |
1263 | } | |
1264 | return cpu; | |
1265 | } | |
1266 | ||
1267 | CPUState *mon_get_cpu(void) | |
1268 | { | |
1269 | return mon_get_cpu_sync(true); | |
1270 | } | |
1271 | ||
1272 | CPUArchState *mon_get_cpu_env(void) | |
1273 | { | |
1274 | CPUState *cs = mon_get_cpu(); | |
1275 | ||
1276 | return cs ? cs->env_ptr : NULL; | |
1277 | } | |
1278 | ||
1279 | int monitor_get_cpu_index(void) | |
1280 | { | |
1281 | CPUState *cs = mon_get_cpu_sync(false); | |
1282 | ||
1283 | return cs ? cs->cpu_index : UNASSIGNED_CPU_INDEX; | |
1284 | } | |
1285 | ||
1286 | static void hmp_info_registers(Monitor *mon, const QDict *qdict) | |
1287 | { | |
1288 | bool all_cpus = qdict_get_try_bool(qdict, "cpustate_all", false); | |
1289 | CPUState *cs; | |
1290 | ||
1291 | if (all_cpus) { | |
1292 | CPU_FOREACH(cs) { | |
1293 | monitor_printf(mon, "\nCPU#%d\n", cs->cpu_index); | |
1294 | cpu_dump_state(cs, (FILE *)mon, monitor_fprintf, CPU_DUMP_FPU); | |
1295 | } | |
1296 | } else { | |
1297 | cs = mon_get_cpu(); | |
1298 | ||
1299 | if (!cs) { | |
1300 | monitor_printf(mon, "No CPU available\n"); | |
1301 | return; | |
1302 | } | |
1303 | ||
1304 | cpu_dump_state(cs, (FILE *)mon, monitor_fprintf, CPU_DUMP_FPU); | |
1305 | } | |
1306 | } | |
1307 | ||
1308 | #ifdef CONFIG_TCG | |
1309 | static void hmp_info_jit(Monitor *mon, const QDict *qdict) | |
1310 | { | |
1311 | if (!tcg_enabled()) { | |
1312 | error_report("JIT information is only available with accel=tcg"); | |
1313 | return; | |
1314 | } | |
1315 | ||
1316 | dump_exec_info((FILE *)mon, monitor_fprintf); | |
1317 | dump_drift_info((FILE *)mon, monitor_fprintf); | |
1318 | } | |
1319 | ||
1320 | static void hmp_info_opcount(Monitor *mon, const QDict *qdict) | |
1321 | { | |
1322 | dump_opcount_info((FILE *)mon, monitor_fprintf); | |
1323 | } | |
1324 | #endif | |
1325 | ||
1326 | static void hmp_info_sync_profile(Monitor *mon, const QDict *qdict) | |
1327 | { | |
1328 | int64_t max = qdict_get_try_int(qdict, "max", 10); | |
1329 | bool mean = qdict_get_try_bool(qdict, "mean", false); | |
1330 | bool coalesce = !qdict_get_try_bool(qdict, "no_coalesce", false); | |
1331 | enum QSPSortBy sort_by; | |
1332 | ||
1333 | sort_by = mean ? QSP_SORT_BY_AVG_WAIT_TIME : QSP_SORT_BY_TOTAL_WAIT_TIME; | |
1334 | qsp_report((FILE *)mon, monitor_fprintf, max, sort_by, coalesce); | |
1335 | } | |
1336 | ||
1337 | static void hmp_info_history(Monitor *mon, const QDict *qdict) | |
1338 | { | |
1339 | int i; | |
1340 | const char *str; | |
1341 | ||
1342 | if (!mon->rs) | |
1343 | return; | |
1344 | i = 0; | |
1345 | for(;;) { | |
1346 | str = readline_get_history(mon->rs, i); | |
1347 | if (!str) | |
1348 | break; | |
1349 | monitor_printf(mon, "%d: '%s'\n", i, str); | |
1350 | i++; | |
1351 | } | |
1352 | } | |
1353 | ||
1354 | static void hmp_info_cpustats(Monitor *mon, const QDict *qdict) | |
1355 | { | |
1356 | CPUState *cs = mon_get_cpu(); | |
1357 | ||
1358 | if (!cs) { | |
1359 | monitor_printf(mon, "No CPU available\n"); | |
1360 | return; | |
1361 | } | |
1362 | cpu_dump_statistics(cs, (FILE *)mon, &monitor_fprintf, 0); | |
1363 | } | |
1364 | ||
1365 | static void hmp_info_trace_events(Monitor *mon, const QDict *qdict) | |
1366 | { | |
1367 | const char *name = qdict_get_try_str(qdict, "name"); | |
1368 | bool has_vcpu = qdict_haskey(qdict, "vcpu"); | |
1369 | int vcpu = qdict_get_try_int(qdict, "vcpu", 0); | |
1370 | TraceEventInfoList *events; | |
1371 | TraceEventInfoList *elem; | |
1372 | Error *local_err = NULL; | |
1373 | ||
1374 | if (name == NULL) { | |
1375 | name = "*"; | |
1376 | } | |
1377 | if (vcpu < 0) { | |
1378 | monitor_printf(mon, "argument vcpu must be positive"); | |
1379 | return; | |
1380 | } | |
1381 | ||
1382 | events = qmp_trace_event_get_state(name, has_vcpu, vcpu, &local_err); | |
1383 | if (local_err) { | |
1384 | error_report_err(local_err); | |
1385 | return; | |
1386 | } | |
1387 | ||
1388 | for (elem = events; elem != NULL; elem = elem->next) { | |
1389 | monitor_printf(mon, "%s : state %u\n", | |
1390 | elem->value->name, | |
1391 | elem->value->state == TRACE_EVENT_STATE_ENABLED ? 1 : 0); | |
1392 | } | |
1393 | qapi_free_TraceEventInfoList(events); | |
1394 | } | |
1395 | ||
1396 | void qmp_client_migrate_info(const char *protocol, const char *hostname, | |
1397 | bool has_port, int64_t port, | |
1398 | bool has_tls_port, int64_t tls_port, | |
1399 | bool has_cert_subject, const char *cert_subject, | |
1400 | Error **errp) | |
1401 | { | |
1402 | if (strcmp(protocol, "spice") == 0) { | |
1403 | if (!qemu_using_spice(errp)) { | |
1404 | return; | |
1405 | } | |
1406 | ||
1407 | if (!has_port && !has_tls_port) { | |
1408 | error_setg(errp, QERR_MISSING_PARAMETER, "port/tls-port"); | |
1409 | return; | |
1410 | } | |
1411 | ||
1412 | if (qemu_spice_migrate_info(hostname, | |
1413 | has_port ? port : -1, | |
1414 | has_tls_port ? tls_port : -1, | |
1415 | cert_subject)) { | |
1416 | error_setg(errp, QERR_UNDEFINED_ERROR); | |
1417 | return; | |
1418 | } | |
1419 | return; | |
1420 | } | |
1421 | ||
1422 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "protocol", "spice"); | |
1423 | } | |
1424 | ||
1425 | static void hmp_logfile(Monitor *mon, const QDict *qdict) | |
1426 | { | |
1427 | Error *err = NULL; | |
1428 | ||
1429 | qemu_set_log_filename(qdict_get_str(qdict, "filename"), &err); | |
1430 | if (err) { | |
1431 | error_report_err(err); | |
1432 | } | |
1433 | } | |
1434 | ||
1435 | static void hmp_log(Monitor *mon, const QDict *qdict) | |
1436 | { | |
1437 | int mask; | |
1438 | const char *items = qdict_get_str(qdict, "items"); | |
1439 | ||
1440 | if (!strcmp(items, "none")) { | |
1441 | mask = 0; | |
1442 | } else { | |
1443 | mask = qemu_str_to_log_mask(items); | |
1444 | if (!mask) { | |
1445 | help_cmd(mon, "log"); | |
1446 | return; | |
1447 | } | |
1448 | } | |
1449 | qemu_set_log(mask); | |
1450 | } | |
1451 | ||
1452 | static void hmp_singlestep(Monitor *mon, const QDict *qdict) | |
1453 | { | |
1454 | const char *option = qdict_get_try_str(qdict, "option"); | |
1455 | if (!option || !strcmp(option, "on")) { | |
1456 | singlestep = 1; | |
1457 | } else if (!strcmp(option, "off")) { | |
1458 | singlestep = 0; | |
1459 | } else { | |
1460 | monitor_printf(mon, "unexpected option %s\n", option); | |
1461 | } | |
1462 | } | |
1463 | ||
1464 | static void hmp_gdbserver(Monitor *mon, const QDict *qdict) | |
1465 | { | |
1466 | const char *device = qdict_get_try_str(qdict, "device"); | |
1467 | if (!device) | |
1468 | device = "tcp::" DEFAULT_GDBSTUB_PORT; | |
1469 | if (gdbserver_start(device) < 0) { | |
1470 | monitor_printf(mon, "Could not open gdbserver on device '%s'\n", | |
1471 | device); | |
1472 | } else if (strcmp(device, "none") == 0) { | |
1473 | monitor_printf(mon, "Disabled gdbserver\n"); | |
1474 | } else { | |
1475 | monitor_printf(mon, "Waiting for gdb connection on device '%s'\n", | |
1476 | device); | |
1477 | } | |
1478 | } | |
1479 | ||
1480 | static void hmp_watchdog_action(Monitor *mon, const QDict *qdict) | |
1481 | { | |
1482 | const char *action = qdict_get_str(qdict, "action"); | |
1483 | if (select_watchdog_action(action) == -1) { | |
1484 | monitor_printf(mon, "Unknown watchdog action '%s'\n", action); | |
1485 | } | |
1486 | } | |
1487 | ||
1488 | static void monitor_printc(Monitor *mon, int c) | |
1489 | { | |
1490 | monitor_printf(mon, "'"); | |
1491 | switch(c) { | |
1492 | case '\'': | |
1493 | monitor_printf(mon, "\\'"); | |
1494 | break; | |
1495 | case '\\': | |
1496 | monitor_printf(mon, "\\\\"); | |
1497 | break; | |
1498 | case '\n': | |
1499 | monitor_printf(mon, "\\n"); | |
1500 | break; | |
1501 | case '\r': | |
1502 | monitor_printf(mon, "\\r"); | |
1503 | break; | |
1504 | default: | |
1505 | if (c >= 32 && c <= 126) { | |
1506 | monitor_printf(mon, "%c", c); | |
1507 | } else { | |
1508 | monitor_printf(mon, "\\x%02x", c); | |
1509 | } | |
1510 | break; | |
1511 | } | |
1512 | monitor_printf(mon, "'"); | |
1513 | } | |
1514 | ||
1515 | static void memory_dump(Monitor *mon, int count, int format, int wsize, | |
1516 | hwaddr addr, int is_physical) | |
1517 | { | |
1518 | int l, line_size, i, max_digits, len; | |
1519 | uint8_t buf[16]; | |
1520 | uint64_t v; | |
1521 | CPUState *cs = mon_get_cpu(); | |
1522 | ||
1523 | if (!cs && (format == 'i' || !is_physical)) { | |
1524 | monitor_printf(mon, "Can not dump without CPU\n"); | |
1525 | return; | |
1526 | } | |
1527 | ||
1528 | if (format == 'i') { | |
1529 | monitor_disas(mon, cs, addr, count, is_physical); | |
1530 | return; | |
1531 | } | |
1532 | ||
1533 | len = wsize * count; | |
1534 | if (wsize == 1) | |
1535 | line_size = 8; | |
1536 | else | |
1537 | line_size = 16; | |
1538 | max_digits = 0; | |
1539 | ||
1540 | switch(format) { | |
1541 | case 'o': | |
1542 | max_digits = DIV_ROUND_UP(wsize * 8, 3); | |
1543 | break; | |
1544 | default: | |
1545 | case 'x': | |
1546 | max_digits = (wsize * 8) / 4; | |
1547 | break; | |
1548 | case 'u': | |
1549 | case 'd': | |
1550 | max_digits = DIV_ROUND_UP(wsize * 8 * 10, 33); | |
1551 | break; | |
1552 | case 'c': | |
1553 | wsize = 1; | |
1554 | break; | |
1555 | } | |
1556 | ||
1557 | while (len > 0) { | |
1558 | if (is_physical) | |
1559 | monitor_printf(mon, TARGET_FMT_plx ":", addr); | |
1560 | else | |
1561 | monitor_printf(mon, TARGET_FMT_lx ":", (target_ulong)addr); | |
1562 | l = len; | |
1563 | if (l > line_size) | |
1564 | l = line_size; | |
1565 | if (is_physical) { | |
1566 | AddressSpace *as = cs ? cs->as : &address_space_memory; | |
1567 | MemTxResult r = address_space_read(as, addr, | |
1568 | MEMTXATTRS_UNSPECIFIED, buf, l); | |
1569 | if (r != MEMTX_OK) { | |
1570 | monitor_printf(mon, " Cannot access memory\n"); | |
1571 | break; | |
1572 | } | |
1573 | } else { | |
1574 | if (cpu_memory_rw_debug(cs, addr, buf, l, 0) < 0) { | |
1575 | monitor_printf(mon, " Cannot access memory\n"); | |
1576 | break; | |
1577 | } | |
1578 | } | |
1579 | i = 0; | |
1580 | while (i < l) { | |
1581 | switch(wsize) { | |
1582 | default: | |
1583 | case 1: | |
1584 | v = ldub_p(buf + i); | |
1585 | break; | |
1586 | case 2: | |
1587 | v = lduw_p(buf + i); | |
1588 | break; | |
1589 | case 4: | |
1590 | v = (uint32_t)ldl_p(buf + i); | |
1591 | break; | |
1592 | case 8: | |
1593 | v = ldq_p(buf + i); | |
1594 | break; | |
1595 | } | |
1596 | monitor_printf(mon, " "); | |
1597 | switch(format) { | |
1598 | case 'o': | |
1599 | monitor_printf(mon, "%#*" PRIo64, max_digits, v); | |
1600 | break; | |
1601 | case 'x': | |
1602 | monitor_printf(mon, "0x%0*" PRIx64, max_digits, v); | |
1603 | break; | |
1604 | case 'u': | |
1605 | monitor_printf(mon, "%*" PRIu64, max_digits, v); | |
1606 | break; | |
1607 | case 'd': | |
1608 | monitor_printf(mon, "%*" PRId64, max_digits, v); | |
1609 | break; | |
1610 | case 'c': | |
1611 | monitor_printc(mon, v); | |
1612 | break; | |
1613 | } | |
1614 | i += wsize; | |
1615 | } | |
1616 | monitor_printf(mon, "\n"); | |
1617 | addr += l; | |
1618 | len -= l; | |
1619 | } | |
1620 | } | |
1621 | ||
1622 | static void hmp_memory_dump(Monitor *mon, const QDict *qdict) | |
1623 | { | |
1624 | int count = qdict_get_int(qdict, "count"); | |
1625 | int format = qdict_get_int(qdict, "format"); | |
1626 | int size = qdict_get_int(qdict, "size"); | |
1627 | target_long addr = qdict_get_int(qdict, "addr"); | |
1628 | ||
1629 | memory_dump(mon, count, format, size, addr, 0); | |
1630 | } | |
1631 | ||
1632 | static void hmp_physical_memory_dump(Monitor *mon, const QDict *qdict) | |
1633 | { | |
1634 | int count = qdict_get_int(qdict, "count"); | |
1635 | int format = qdict_get_int(qdict, "format"); | |
1636 | int size = qdict_get_int(qdict, "size"); | |
1637 | hwaddr addr = qdict_get_int(qdict, "addr"); | |
1638 | ||
1639 | memory_dump(mon, count, format, size, addr, 1); | |
1640 | } | |
1641 | ||
1642 | static void *gpa2hva(MemoryRegion **p_mr, hwaddr addr, Error **errp) | |
1643 | { | |
1644 | MemoryRegionSection mrs = memory_region_find(get_system_memory(), | |
1645 | addr, 1); | |
1646 | ||
1647 | if (!mrs.mr) { | |
1648 | error_setg(errp, "No memory is mapped at address 0x%" HWADDR_PRIx, addr); | |
1649 | return NULL; | |
1650 | } | |
1651 | ||
1652 | if (!memory_region_is_ram(mrs.mr) && !memory_region_is_romd(mrs.mr)) { | |
1653 | error_setg(errp, "Memory at address 0x%" HWADDR_PRIx "is not RAM", addr); | |
1654 | memory_region_unref(mrs.mr); | |
1655 | return NULL; | |
1656 | } | |
1657 | ||
1658 | *p_mr = mrs.mr; | |
1659 | return qemu_map_ram_ptr(mrs.mr->ram_block, mrs.offset_within_region); | |
1660 | } | |
1661 | ||
1662 | static void hmp_gpa2hva(Monitor *mon, const QDict *qdict) | |
1663 | { | |
1664 | hwaddr addr = qdict_get_int(qdict, "addr"); | |
1665 | Error *local_err = NULL; | |
1666 | MemoryRegion *mr = NULL; | |
1667 | void *ptr; | |
1668 | ||
1669 | ptr = gpa2hva(&mr, addr, &local_err); | |
1670 | if (local_err) { | |
1671 | error_report_err(local_err); | |
1672 | return; | |
1673 | } | |
1674 | ||
1675 | monitor_printf(mon, "Host virtual address for 0x%" HWADDR_PRIx | |
1676 | " (%s) is %p\n", | |
1677 | addr, mr->name, ptr); | |
1678 | ||
1679 | memory_region_unref(mr); | |
1680 | } | |
1681 | ||
1682 | #ifdef CONFIG_LINUX | |
1683 | static uint64_t vtop(void *ptr, Error **errp) | |
1684 | { | |
1685 | uint64_t pinfo; | |
1686 | uint64_t ret = -1; | |
1687 | uintptr_t addr = (uintptr_t) ptr; | |
1688 | uintptr_t pagesize = getpagesize(); | |
1689 | off_t offset = addr / pagesize * sizeof(pinfo); | |
1690 | int fd; | |
1691 | ||
1692 | fd = open("/proc/self/pagemap", O_RDONLY); | |
1693 | if (fd == -1) { | |
1694 | error_setg_errno(errp, errno, "Cannot open /proc/self/pagemap"); | |
1695 | return -1; | |
1696 | } | |
1697 | ||
1698 | /* Force copy-on-write if necessary. */ | |
1699 | atomic_add((uint8_t *)ptr, 0); | |
1700 | ||
1701 | if (pread(fd, &pinfo, sizeof(pinfo), offset) != sizeof(pinfo)) { | |
1702 | error_setg_errno(errp, errno, "Cannot read pagemap"); | |
1703 | goto out; | |
1704 | } | |
1705 | if ((pinfo & (1ull << 63)) == 0) { | |
1706 | error_setg(errp, "Page not present"); | |
1707 | goto out; | |
1708 | } | |
1709 | ret = ((pinfo & 0x007fffffffffffffull) * pagesize) | (addr & (pagesize - 1)); | |
1710 | ||
1711 | out: | |
1712 | close(fd); | |
1713 | return ret; | |
1714 | } | |
1715 | ||
1716 | static void hmp_gpa2hpa(Monitor *mon, const QDict *qdict) | |
1717 | { | |
1718 | hwaddr addr = qdict_get_int(qdict, "addr"); | |
1719 | Error *local_err = NULL; | |
1720 | MemoryRegion *mr = NULL; | |
1721 | void *ptr; | |
1722 | uint64_t physaddr; | |
1723 | ||
1724 | ptr = gpa2hva(&mr, addr, &local_err); | |
1725 | if (local_err) { | |
1726 | error_report_err(local_err); | |
1727 | return; | |
1728 | } | |
1729 | ||
1730 | physaddr = vtop(ptr, &local_err); | |
1731 | if (local_err) { | |
1732 | error_report_err(local_err); | |
1733 | } else { | |
1734 | monitor_printf(mon, "Host physical address for 0x%" HWADDR_PRIx | |
1735 | " (%s) is 0x%" PRIx64 "\n", | |
1736 | addr, mr->name, (uint64_t) physaddr); | |
1737 | } | |
1738 | ||
1739 | memory_region_unref(mr); | |
1740 | } | |
1741 | #endif | |
1742 | ||
1743 | static void do_print(Monitor *mon, const QDict *qdict) | |
1744 | { | |
1745 | int format = qdict_get_int(qdict, "format"); | |
1746 | hwaddr val = qdict_get_int(qdict, "val"); | |
1747 | ||
1748 | switch(format) { | |
1749 | case 'o': | |
1750 | monitor_printf(mon, "%#" HWADDR_PRIo, val); | |
1751 | break; | |
1752 | case 'x': | |
1753 | monitor_printf(mon, "%#" HWADDR_PRIx, val); | |
1754 | break; | |
1755 | case 'u': | |
1756 | monitor_printf(mon, "%" HWADDR_PRIu, val); | |
1757 | break; | |
1758 | default: | |
1759 | case 'd': | |
1760 | monitor_printf(mon, "%" HWADDR_PRId, val); | |
1761 | break; | |
1762 | case 'c': | |
1763 | monitor_printc(mon, val); | |
1764 | break; | |
1765 | } | |
1766 | monitor_printf(mon, "\n"); | |
1767 | } | |
1768 | ||
1769 | static void hmp_sum(Monitor *mon, const QDict *qdict) | |
1770 | { | |
1771 | uint32_t addr; | |
1772 | uint16_t sum; | |
1773 | uint32_t start = qdict_get_int(qdict, "start"); | |
1774 | uint32_t size = qdict_get_int(qdict, "size"); | |
1775 | ||
1776 | sum = 0; | |
1777 | for(addr = start; addr < (start + size); addr++) { | |
1778 | uint8_t val = address_space_ldub(&address_space_memory, addr, | |
1779 | MEMTXATTRS_UNSPECIFIED, NULL); | |
1780 | /* BSD sum algorithm ('sum' Unix command) */ | |
1781 | sum = (sum >> 1) | (sum << 15); | |
1782 | sum += val; | |
1783 | } | |
1784 | monitor_printf(mon, "%05d\n", sum); | |
1785 | } | |
1786 | ||
1787 | static int mouse_button_state; | |
1788 | ||
1789 | static void hmp_mouse_move(Monitor *mon, const QDict *qdict) | |
1790 | { | |
1791 | int dx, dy, dz, button; | |
1792 | const char *dx_str = qdict_get_str(qdict, "dx_str"); | |
1793 | const char *dy_str = qdict_get_str(qdict, "dy_str"); | |
1794 | const char *dz_str = qdict_get_try_str(qdict, "dz_str"); | |
1795 | ||
1796 | dx = strtol(dx_str, NULL, 0); | |
1797 | dy = strtol(dy_str, NULL, 0); | |
1798 | qemu_input_queue_rel(NULL, INPUT_AXIS_X, dx); | |
1799 | qemu_input_queue_rel(NULL, INPUT_AXIS_Y, dy); | |
1800 | ||
1801 | if (dz_str) { | |
1802 | dz = strtol(dz_str, NULL, 0); | |
1803 | if (dz != 0) { | |
1804 | button = (dz > 0) ? INPUT_BUTTON_WHEEL_UP : INPUT_BUTTON_WHEEL_DOWN; | |
1805 | qemu_input_queue_btn(NULL, button, true); | |
1806 | qemu_input_event_sync(); | |
1807 | qemu_input_queue_btn(NULL, button, false); | |
1808 | } | |
1809 | } | |
1810 | qemu_input_event_sync(); | |
1811 | } | |
1812 | ||
1813 | static void hmp_mouse_button(Monitor *mon, const QDict *qdict) | |
1814 | { | |
1815 | static uint32_t bmap[INPUT_BUTTON__MAX] = { | |
1816 | [INPUT_BUTTON_LEFT] = MOUSE_EVENT_LBUTTON, | |
1817 | [INPUT_BUTTON_MIDDLE] = MOUSE_EVENT_MBUTTON, | |
1818 | [INPUT_BUTTON_RIGHT] = MOUSE_EVENT_RBUTTON, | |
1819 | }; | |
1820 | int button_state = qdict_get_int(qdict, "button_state"); | |
1821 | ||
1822 | if (mouse_button_state == button_state) { | |
1823 | return; | |
1824 | } | |
1825 | qemu_input_update_buttons(NULL, bmap, mouse_button_state, button_state); | |
1826 | qemu_input_event_sync(); | |
1827 | mouse_button_state = button_state; | |
1828 | } | |
1829 | ||
1830 | static void hmp_ioport_read(Monitor *mon, const QDict *qdict) | |
1831 | { | |
1832 | int size = qdict_get_int(qdict, "size"); | |
1833 | int addr = qdict_get_int(qdict, "addr"); | |
1834 | int has_index = qdict_haskey(qdict, "index"); | |
1835 | uint32_t val; | |
1836 | int suffix; | |
1837 | ||
1838 | if (has_index) { | |
1839 | int index = qdict_get_int(qdict, "index"); | |
1840 | cpu_outb(addr & IOPORTS_MASK, index & 0xff); | |
1841 | addr++; | |
1842 | } | |
1843 | addr &= 0xffff; | |
1844 | ||
1845 | switch(size) { | |
1846 | default: | |
1847 | case 1: | |
1848 | val = cpu_inb(addr); | |
1849 | suffix = 'b'; | |
1850 | break; | |
1851 | case 2: | |
1852 | val = cpu_inw(addr); | |
1853 | suffix = 'w'; | |
1854 | break; | |
1855 | case 4: | |
1856 | val = cpu_inl(addr); | |
1857 | suffix = 'l'; | |
1858 | break; | |
1859 | } | |
1860 | monitor_printf(mon, "port%c[0x%04x] = %#0*x\n", | |
1861 | suffix, addr, size * 2, val); | |
1862 | } | |
1863 | ||
1864 | static void hmp_ioport_write(Monitor *mon, const QDict *qdict) | |
1865 | { | |
1866 | int size = qdict_get_int(qdict, "size"); | |
1867 | int addr = qdict_get_int(qdict, "addr"); | |
1868 | int val = qdict_get_int(qdict, "val"); | |
1869 | ||
1870 | addr &= IOPORTS_MASK; | |
1871 | ||
1872 | switch (size) { | |
1873 | default: | |
1874 | case 1: | |
1875 | cpu_outb(addr, val); | |
1876 | break; | |
1877 | case 2: | |
1878 | cpu_outw(addr, val); | |
1879 | break; | |
1880 | case 4: | |
1881 | cpu_outl(addr, val); | |
1882 | break; | |
1883 | } | |
1884 | } | |
1885 | ||
1886 | static void hmp_boot_set(Monitor *mon, const QDict *qdict) | |
1887 | { | |
1888 | Error *local_err = NULL; | |
1889 | const char *bootdevice = qdict_get_str(qdict, "bootdevice"); | |
1890 | ||
1891 | qemu_boot_set(bootdevice, &local_err); | |
1892 | if (local_err) { | |
1893 | error_report_err(local_err); | |
1894 | } else { | |
1895 | monitor_printf(mon, "boot device list now set to %s\n", bootdevice); | |
1896 | } | |
1897 | } | |
1898 | ||
1899 | static void hmp_info_mtree(Monitor *mon, const QDict *qdict) | |
1900 | { | |
1901 | bool flatview = qdict_get_try_bool(qdict, "flatview", false); | |
1902 | bool dispatch_tree = qdict_get_try_bool(qdict, "dispatch_tree", false); | |
1903 | bool owner = qdict_get_try_bool(qdict, "owner", false); | |
1904 | ||
1905 | mtree_info((fprintf_function)monitor_printf, mon, flatview, dispatch_tree, | |
1906 | owner); | |
1907 | } | |
1908 | ||
1909 | static void hmp_info_numa(Monitor *mon, const QDict *qdict) | |
1910 | { | |
1911 | int i; | |
1912 | NumaNodeMem *node_mem; | |
1913 | CpuInfoList *cpu_list, *cpu; | |
1914 | ||
1915 | cpu_list = qmp_query_cpus(&error_abort); | |
1916 | node_mem = g_new0(NumaNodeMem, nb_numa_nodes); | |
1917 | ||
1918 | query_numa_node_mem(node_mem); | |
1919 | monitor_printf(mon, "%d nodes\n", nb_numa_nodes); | |
1920 | for (i = 0; i < nb_numa_nodes; i++) { | |
1921 | monitor_printf(mon, "node %d cpus:", i); | |
1922 | for (cpu = cpu_list; cpu; cpu = cpu->next) { | |
1923 | if (cpu->value->has_props && cpu->value->props->has_node_id && | |
1924 | cpu->value->props->node_id == i) { | |
1925 | monitor_printf(mon, " %" PRIi64, cpu->value->CPU); | |
1926 | } | |
1927 | } | |
1928 | monitor_printf(mon, "\n"); | |
1929 | monitor_printf(mon, "node %d size: %" PRId64 " MB\n", i, | |
1930 | node_mem[i].node_mem >> 20); | |
1931 | monitor_printf(mon, "node %d plugged: %" PRId64 " MB\n", i, | |
1932 | node_mem[i].node_plugged_mem >> 20); | |
1933 | } | |
1934 | qapi_free_CpuInfoList(cpu_list); | |
1935 | g_free(node_mem); | |
1936 | } | |
1937 | ||
1938 | #ifdef CONFIG_PROFILER | |
1939 | ||
1940 | int64_t dev_time; | |
1941 | ||
1942 | static void hmp_info_profile(Monitor *mon, const QDict *qdict) | |
1943 | { | |
1944 | static int64_t last_cpu_exec_time; | |
1945 | int64_t cpu_exec_time; | |
1946 | int64_t delta; | |
1947 | ||
1948 | cpu_exec_time = tcg_cpu_exec_time(); | |
1949 | delta = cpu_exec_time - last_cpu_exec_time; | |
1950 | ||
1951 | monitor_printf(mon, "async time %" PRId64 " (%0.3f)\n", | |
1952 | dev_time, dev_time / (double)NANOSECONDS_PER_SECOND); | |
1953 | monitor_printf(mon, "qemu time %" PRId64 " (%0.3f)\n", | |
1954 | delta, delta / (double)NANOSECONDS_PER_SECOND); | |
1955 | last_cpu_exec_time = cpu_exec_time; | |
1956 | dev_time = 0; | |
1957 | } | |
1958 | #else | |
1959 | static void hmp_info_profile(Monitor *mon, const QDict *qdict) | |
1960 | { | |
1961 | monitor_printf(mon, "Internal profiler not compiled\n"); | |
1962 | } | |
1963 | #endif | |
1964 | ||
1965 | /* Capture support */ | |
1966 | static QLIST_HEAD (capture_list_head, CaptureState) capture_head; | |
1967 | ||
1968 | static void hmp_info_capture(Monitor *mon, const QDict *qdict) | |
1969 | { | |
1970 | int i; | |
1971 | CaptureState *s; | |
1972 | ||
1973 | for (s = capture_head.lh_first, i = 0; s; s = s->entries.le_next, ++i) { | |
1974 | monitor_printf(mon, "[%d]: ", i); | |
1975 | s->ops.info (s->opaque); | |
1976 | } | |
1977 | } | |
1978 | ||
1979 | static void hmp_stopcapture(Monitor *mon, const QDict *qdict) | |
1980 | { | |
1981 | int i; | |
1982 | int n = qdict_get_int(qdict, "n"); | |
1983 | CaptureState *s; | |
1984 | ||
1985 | for (s = capture_head.lh_first, i = 0; s; s = s->entries.le_next, ++i) { | |
1986 | if (i == n) { | |
1987 | s->ops.destroy (s->opaque); | |
1988 | QLIST_REMOVE (s, entries); | |
1989 | g_free (s); | |
1990 | return; | |
1991 | } | |
1992 | } | |
1993 | } | |
1994 | ||
1995 | static void hmp_wavcapture(Monitor *mon, const QDict *qdict) | |
1996 | { | |
1997 | const char *path = qdict_get_str(qdict, "path"); | |
1998 | int has_freq = qdict_haskey(qdict, "freq"); | |
1999 | int freq = qdict_get_try_int(qdict, "freq", -1); | |
2000 | int has_bits = qdict_haskey(qdict, "bits"); | |
2001 | int bits = qdict_get_try_int(qdict, "bits", -1); | |
2002 | int has_channels = qdict_haskey(qdict, "nchannels"); | |
2003 | int nchannels = qdict_get_try_int(qdict, "nchannels", -1); | |
2004 | CaptureState *s; | |
2005 | ||
2006 | s = g_malloc0 (sizeof (*s)); | |
2007 | ||
2008 | freq = has_freq ? freq : 44100; | |
2009 | bits = has_bits ? bits : 16; | |
2010 | nchannels = has_channels ? nchannels : 2; | |
2011 | ||
2012 | if (wav_start_capture (s, path, freq, bits, nchannels)) { | |
2013 | monitor_printf(mon, "Failed to add wave capture\n"); | |
2014 | g_free (s); | |
2015 | return; | |
2016 | } | |
2017 | QLIST_INSERT_HEAD (&capture_head, s, entries); | |
2018 | } | |
2019 | ||
2020 | static QAuthZList *find_auth(Monitor *mon, const char *name) | |
2021 | { | |
2022 | Object *obj; | |
2023 | Object *container; | |
2024 | ||
2025 | container = object_get_objects_root(); | |
2026 | obj = object_resolve_path_component(container, name); | |
2027 | if (!obj) { | |
2028 | monitor_printf(mon, "acl: unknown list '%s'\n", name); | |
2029 | return NULL; | |
2030 | } | |
2031 | ||
2032 | return QAUTHZ_LIST(obj); | |
2033 | } | |
2034 | ||
2035 | static void hmp_acl_show(Monitor *mon, const QDict *qdict) | |
2036 | { | |
2037 | const char *aclname = qdict_get_str(qdict, "aclname"); | |
2038 | QAuthZList *auth = find_auth(mon, aclname); | |
2039 | QAuthZListRuleList *rules; | |
2040 | size_t i = 0; | |
2041 | ||
2042 | if (!auth) { | |
2043 | return; | |
2044 | } | |
2045 | ||
2046 | monitor_printf(mon, "policy: %s\n", | |
2047 | QAuthZListPolicy_str(auth->policy)); | |
2048 | ||
2049 | rules = auth->rules; | |
2050 | while (rules) { | |
2051 | QAuthZListRule *rule = rules->value; | |
2052 | i++; | |
2053 | monitor_printf(mon, "%zu: %s %s\n", i, | |
2054 | QAuthZListPolicy_str(rule->policy), | |
2055 | rule->match); | |
2056 | rules = rules->next; | |
2057 | } | |
2058 | } | |
2059 | ||
2060 | static void hmp_acl_reset(Monitor *mon, const QDict *qdict) | |
2061 | { | |
2062 | const char *aclname = qdict_get_str(qdict, "aclname"); | |
2063 | QAuthZList *auth = find_auth(mon, aclname); | |
2064 | ||
2065 | if (!auth) { | |
2066 | return; | |
2067 | } | |
2068 | ||
2069 | auth->policy = QAUTHZ_LIST_POLICY_DENY; | |
2070 | qapi_free_QAuthZListRuleList(auth->rules); | |
2071 | auth->rules = NULL; | |
2072 | monitor_printf(mon, "acl: removed all rules\n"); | |
2073 | } | |
2074 | ||
2075 | static void hmp_acl_policy(Monitor *mon, const QDict *qdict) | |
2076 | { | |
2077 | const char *aclname = qdict_get_str(qdict, "aclname"); | |
2078 | const char *policy = qdict_get_str(qdict, "policy"); | |
2079 | QAuthZList *auth = find_auth(mon, aclname); | |
2080 | int val; | |
2081 | Error *err = NULL; | |
2082 | ||
2083 | if (!auth) { | |
2084 | return; | |
2085 | } | |
2086 | ||
2087 | val = qapi_enum_parse(&QAuthZListPolicy_lookup, | |
2088 | policy, | |
2089 | QAUTHZ_LIST_POLICY_DENY, | |
2090 | &err); | |
2091 | if (err) { | |
2092 | error_free(err); | |
2093 | monitor_printf(mon, "acl: unknown policy '%s', " | |
2094 | "expected 'deny' or 'allow'\n", policy); | |
2095 | } else { | |
2096 | auth->policy = val; | |
2097 | if (auth->policy == QAUTHZ_LIST_POLICY_ALLOW) { | |
2098 | monitor_printf(mon, "acl: policy set to 'allow'\n"); | |
2099 | } else { | |
2100 | monitor_printf(mon, "acl: policy set to 'deny'\n"); | |
2101 | } | |
2102 | } | |
2103 | } | |
2104 | ||
2105 | static QAuthZListFormat hmp_acl_get_format(const char *match) | |
2106 | { | |
2107 | if (strchr(match, '*')) { | |
2108 | return QAUTHZ_LIST_FORMAT_GLOB; | |
2109 | } else { | |
2110 | return QAUTHZ_LIST_FORMAT_EXACT; | |
2111 | } | |
2112 | } | |
2113 | ||
2114 | static void hmp_acl_add(Monitor *mon, const QDict *qdict) | |
2115 | { | |
2116 | const char *aclname = qdict_get_str(qdict, "aclname"); | |
2117 | const char *match = qdict_get_str(qdict, "match"); | |
2118 | const char *policystr = qdict_get_str(qdict, "policy"); | |
2119 | int has_index = qdict_haskey(qdict, "index"); | |
2120 | int index = qdict_get_try_int(qdict, "index", -1); | |
2121 | QAuthZList *auth = find_auth(mon, aclname); | |
2122 | Error *err = NULL; | |
2123 | QAuthZListPolicy policy; | |
2124 | QAuthZListFormat format; | |
2125 | size_t i = 0; | |
2126 | ||
2127 | if (!auth) { | |
2128 | return; | |
2129 | } | |
2130 | ||
2131 | policy = qapi_enum_parse(&QAuthZListPolicy_lookup, | |
2132 | policystr, | |
2133 | QAUTHZ_LIST_POLICY_DENY, | |
2134 | &err); | |
2135 | if (err) { | |
2136 | error_free(err); | |
2137 | monitor_printf(mon, "acl: unknown policy '%s', " | |
2138 | "expected 'deny' or 'allow'\n", policystr); | |
2139 | return; | |
2140 | } | |
2141 | ||
2142 | format = hmp_acl_get_format(match); | |
2143 | ||
2144 | if (has_index && index == 0) { | |
2145 | monitor_printf(mon, "acl: unable to add acl entry\n"); | |
2146 | return; | |
2147 | } | |
2148 | ||
2149 | if (has_index) { | |
2150 | i = qauthz_list_insert_rule(auth, match, policy, | |
2151 | format, index - 1, &err); | |
2152 | } else { | |
2153 | i = qauthz_list_append_rule(auth, match, policy, | |
2154 | format, &err); | |
2155 | } | |
2156 | if (err) { | |
2157 | monitor_printf(mon, "acl: unable to add rule: %s", | |
2158 | error_get_pretty(err)); | |
2159 | error_free(err); | |
2160 | } else { | |
2161 | monitor_printf(mon, "acl: added rule at position %zu\n", i + 1); | |
2162 | } | |
2163 | } | |
2164 | ||
2165 | static void hmp_acl_remove(Monitor *mon, const QDict *qdict) | |
2166 | { | |
2167 | const char *aclname = qdict_get_str(qdict, "aclname"); | |
2168 | const char *match = qdict_get_str(qdict, "match"); | |
2169 | QAuthZList *auth = find_auth(mon, aclname); | |
2170 | ssize_t i = 0; | |
2171 | ||
2172 | if (!auth) { | |
2173 | return; | |
2174 | } | |
2175 | ||
2176 | i = qauthz_list_delete_rule(auth, match); | |
2177 | if (i >= 0) { | |
2178 | monitor_printf(mon, "acl: removed rule at position %zu\n", i + 1); | |
2179 | } else { | |
2180 | monitor_printf(mon, "acl: no matching acl entry\n"); | |
2181 | } | |
2182 | } | |
2183 | ||
2184 | void qmp_getfd(const char *fdname, Error **errp) | |
2185 | { | |
2186 | mon_fd_t *monfd; | |
2187 | int fd, tmp_fd; | |
2188 | ||
2189 | fd = qemu_chr_fe_get_msgfd(&cur_mon->chr); | |
2190 | if (fd == -1) { | |
2191 | error_setg(errp, QERR_FD_NOT_SUPPLIED); | |
2192 | return; | |
2193 | } | |
2194 | ||
2195 | if (qemu_isdigit(fdname[0])) { | |
2196 | close(fd); | |
2197 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "fdname", | |
2198 | "a name not starting with a digit"); | |
2199 | return; | |
2200 | } | |
2201 | ||
2202 | qemu_mutex_lock(&cur_mon->mon_lock); | |
2203 | QLIST_FOREACH(monfd, &cur_mon->fds, next) { | |
2204 | if (strcmp(monfd->name, fdname) != 0) { | |
2205 | continue; | |
2206 | } | |
2207 | ||
2208 | tmp_fd = monfd->fd; | |
2209 | monfd->fd = fd; | |
2210 | qemu_mutex_unlock(&cur_mon->mon_lock); | |
2211 | /* Make sure close() is outside critical section */ | |
2212 | close(tmp_fd); | |
2213 | return; | |
2214 | } | |
2215 | ||
2216 | monfd = g_malloc0(sizeof(mon_fd_t)); | |
2217 | monfd->name = g_strdup(fdname); | |
2218 | monfd->fd = fd; | |
2219 | ||
2220 | QLIST_INSERT_HEAD(&cur_mon->fds, monfd, next); | |
2221 | qemu_mutex_unlock(&cur_mon->mon_lock); | |
2222 | } | |
2223 | ||
2224 | void qmp_closefd(const char *fdname, Error **errp) | |
2225 | { | |
2226 | mon_fd_t *monfd; | |
2227 | int tmp_fd; | |
2228 | ||
2229 | qemu_mutex_lock(&cur_mon->mon_lock); | |
2230 | QLIST_FOREACH(monfd, &cur_mon->fds, next) { | |
2231 | if (strcmp(monfd->name, fdname) != 0) { | |
2232 | continue; | |
2233 | } | |
2234 | ||
2235 | QLIST_REMOVE(monfd, next); | |
2236 | tmp_fd = monfd->fd; | |
2237 | g_free(monfd->name); | |
2238 | g_free(monfd); | |
2239 | qemu_mutex_unlock(&cur_mon->mon_lock); | |
2240 | /* Make sure close() is outside critical section */ | |
2241 | close(tmp_fd); | |
2242 | return; | |
2243 | } | |
2244 | ||
2245 | qemu_mutex_unlock(&cur_mon->mon_lock); | |
2246 | error_setg(errp, QERR_FD_NOT_FOUND, fdname); | |
2247 | } | |
2248 | ||
2249 | int monitor_get_fd(Monitor *mon, const char *fdname, Error **errp) | |
2250 | { | |
2251 | mon_fd_t *monfd; | |
2252 | ||
2253 | qemu_mutex_lock(&mon->mon_lock); | |
2254 | QLIST_FOREACH(monfd, &mon->fds, next) { | |
2255 | int fd; | |
2256 | ||
2257 | if (strcmp(monfd->name, fdname) != 0) { | |
2258 | continue; | |
2259 | } | |
2260 | ||
2261 | fd = monfd->fd; | |
2262 | ||
2263 | /* caller takes ownership of fd */ | |
2264 | QLIST_REMOVE(monfd, next); | |
2265 | g_free(monfd->name); | |
2266 | g_free(monfd); | |
2267 | qemu_mutex_unlock(&mon->mon_lock); | |
2268 | ||
2269 | return fd; | |
2270 | } | |
2271 | ||
2272 | qemu_mutex_unlock(&mon->mon_lock); | |
2273 | error_setg(errp, "File descriptor named '%s' has not been found", fdname); | |
2274 | return -1; | |
2275 | } | |
2276 | ||
2277 | static void monitor_fdset_cleanup(MonFdset *mon_fdset) | |
2278 | { | |
2279 | MonFdsetFd *mon_fdset_fd; | |
2280 | MonFdsetFd *mon_fdset_fd_next; | |
2281 | ||
2282 | QLIST_FOREACH_SAFE(mon_fdset_fd, &mon_fdset->fds, next, mon_fdset_fd_next) { | |
2283 | if ((mon_fdset_fd->removed || | |
2284 | (QLIST_EMPTY(&mon_fdset->dup_fds) && mon_refcount == 0)) && | |
2285 | runstate_is_running()) { | |
2286 | close(mon_fdset_fd->fd); | |
2287 | g_free(mon_fdset_fd->opaque); | |
2288 | QLIST_REMOVE(mon_fdset_fd, next); | |
2289 | g_free(mon_fdset_fd); | |
2290 | } | |
2291 | } | |
2292 | ||
2293 | if (QLIST_EMPTY(&mon_fdset->fds) && QLIST_EMPTY(&mon_fdset->dup_fds)) { | |
2294 | QLIST_REMOVE(mon_fdset, next); | |
2295 | g_free(mon_fdset); | |
2296 | } | |
2297 | } | |
2298 | ||
2299 | static void monitor_fdsets_cleanup(void) | |
2300 | { | |
2301 | MonFdset *mon_fdset; | |
2302 | MonFdset *mon_fdset_next; | |
2303 | ||
2304 | qemu_mutex_lock(&mon_fdsets_lock); | |
2305 | QLIST_FOREACH_SAFE(mon_fdset, &mon_fdsets, next, mon_fdset_next) { | |
2306 | monitor_fdset_cleanup(mon_fdset); | |
2307 | } | |
2308 | qemu_mutex_unlock(&mon_fdsets_lock); | |
2309 | } | |
2310 | ||
2311 | AddfdInfo *qmp_add_fd(bool has_fdset_id, int64_t fdset_id, bool has_opaque, | |
2312 | const char *opaque, Error **errp) | |
2313 | { | |
2314 | int fd; | |
2315 | Monitor *mon = cur_mon; | |
2316 | AddfdInfo *fdinfo; | |
2317 | ||
2318 | fd = qemu_chr_fe_get_msgfd(&mon->chr); | |
2319 | if (fd == -1) { | |
2320 | error_setg(errp, QERR_FD_NOT_SUPPLIED); | |
2321 | goto error; | |
2322 | } | |
2323 | ||
2324 | fdinfo = monitor_fdset_add_fd(fd, has_fdset_id, fdset_id, | |
2325 | has_opaque, opaque, errp); | |
2326 | if (fdinfo) { | |
2327 | return fdinfo; | |
2328 | } | |
2329 | ||
2330 | error: | |
2331 | if (fd != -1) { | |
2332 | close(fd); | |
2333 | } | |
2334 | return NULL; | |
2335 | } | |
2336 | ||
2337 | void qmp_remove_fd(int64_t fdset_id, bool has_fd, int64_t fd, Error **errp) | |
2338 | { | |
2339 | MonFdset *mon_fdset; | |
2340 | MonFdsetFd *mon_fdset_fd; | |
2341 | char fd_str[60]; | |
2342 | ||
2343 | qemu_mutex_lock(&mon_fdsets_lock); | |
2344 | QLIST_FOREACH(mon_fdset, &mon_fdsets, next) { | |
2345 | if (mon_fdset->id != fdset_id) { | |
2346 | continue; | |
2347 | } | |
2348 | QLIST_FOREACH(mon_fdset_fd, &mon_fdset->fds, next) { | |
2349 | if (has_fd) { | |
2350 | if (mon_fdset_fd->fd != fd) { | |
2351 | continue; | |
2352 | } | |
2353 | mon_fdset_fd->removed = true; | |
2354 | break; | |
2355 | } else { | |
2356 | mon_fdset_fd->removed = true; | |
2357 | } | |
2358 | } | |
2359 | if (has_fd && !mon_fdset_fd) { | |
2360 | goto error; | |
2361 | } | |
2362 | monitor_fdset_cleanup(mon_fdset); | |
2363 | qemu_mutex_unlock(&mon_fdsets_lock); | |
2364 | return; | |
2365 | } | |
2366 | ||
2367 | error: | |
2368 | qemu_mutex_unlock(&mon_fdsets_lock); | |
2369 | if (has_fd) { | |
2370 | snprintf(fd_str, sizeof(fd_str), "fdset-id:%" PRId64 ", fd:%" PRId64, | |
2371 | fdset_id, fd); | |
2372 | } else { | |
2373 | snprintf(fd_str, sizeof(fd_str), "fdset-id:%" PRId64, fdset_id); | |
2374 | } | |
2375 | error_setg(errp, QERR_FD_NOT_FOUND, fd_str); | |
2376 | } | |
2377 | ||
2378 | FdsetInfoList *qmp_query_fdsets(Error **errp) | |
2379 | { | |
2380 | MonFdset *mon_fdset; | |
2381 | MonFdsetFd *mon_fdset_fd; | |
2382 | FdsetInfoList *fdset_list = NULL; | |
2383 | ||
2384 | qemu_mutex_lock(&mon_fdsets_lock); | |
2385 | QLIST_FOREACH(mon_fdset, &mon_fdsets, next) { | |
2386 | FdsetInfoList *fdset_info = g_malloc0(sizeof(*fdset_info)); | |
2387 | FdsetFdInfoList *fdsetfd_list = NULL; | |
2388 | ||
2389 | fdset_info->value = g_malloc0(sizeof(*fdset_info->value)); | |
2390 | fdset_info->value->fdset_id = mon_fdset->id; | |
2391 | ||
2392 | QLIST_FOREACH(mon_fdset_fd, &mon_fdset->fds, next) { | |
2393 | FdsetFdInfoList *fdsetfd_info; | |
2394 | ||
2395 | fdsetfd_info = g_malloc0(sizeof(*fdsetfd_info)); | |
2396 | fdsetfd_info->value = g_malloc0(sizeof(*fdsetfd_info->value)); | |
2397 | fdsetfd_info->value->fd = mon_fdset_fd->fd; | |
2398 | if (mon_fdset_fd->opaque) { | |
2399 | fdsetfd_info->value->has_opaque = true; | |
2400 | fdsetfd_info->value->opaque = g_strdup(mon_fdset_fd->opaque); | |
2401 | } else { | |
2402 | fdsetfd_info->value->has_opaque = false; | |
2403 | } | |
2404 | ||
2405 | fdsetfd_info->next = fdsetfd_list; | |
2406 | fdsetfd_list = fdsetfd_info; | |
2407 | } | |
2408 | ||
2409 | fdset_info->value->fds = fdsetfd_list; | |
2410 | ||
2411 | fdset_info->next = fdset_list; | |
2412 | fdset_list = fdset_info; | |
2413 | } | |
2414 | qemu_mutex_unlock(&mon_fdsets_lock); | |
2415 | ||
2416 | return fdset_list; | |
2417 | } | |
2418 | ||
2419 | AddfdInfo *monitor_fdset_add_fd(int fd, bool has_fdset_id, int64_t fdset_id, | |
2420 | bool has_opaque, const char *opaque, | |
2421 | Error **errp) | |
2422 | { | |
2423 | MonFdset *mon_fdset = NULL; | |
2424 | MonFdsetFd *mon_fdset_fd; | |
2425 | AddfdInfo *fdinfo; | |
2426 | ||
2427 | qemu_mutex_lock(&mon_fdsets_lock); | |
2428 | if (has_fdset_id) { | |
2429 | QLIST_FOREACH(mon_fdset, &mon_fdsets, next) { | |
2430 | /* Break if match found or match impossible due to ordering by ID */ | |
2431 | if (fdset_id <= mon_fdset->id) { | |
2432 | if (fdset_id < mon_fdset->id) { | |
2433 | mon_fdset = NULL; | |
2434 | } | |
2435 | break; | |
2436 | } | |
2437 | } | |
2438 | } | |
2439 | ||
2440 | if (mon_fdset == NULL) { | |
2441 | int64_t fdset_id_prev = -1; | |
2442 | MonFdset *mon_fdset_cur = QLIST_FIRST(&mon_fdsets); | |
2443 | ||
2444 | if (has_fdset_id) { | |
2445 | if (fdset_id < 0) { | |
2446 | error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "fdset-id", | |
2447 | "a non-negative value"); | |
2448 | qemu_mutex_unlock(&mon_fdsets_lock); | |
2449 | return NULL; | |
2450 | } | |
2451 | /* Use specified fdset ID */ | |
2452 | QLIST_FOREACH(mon_fdset, &mon_fdsets, next) { | |
2453 | mon_fdset_cur = mon_fdset; | |
2454 | if (fdset_id < mon_fdset_cur->id) { | |
2455 | break; | |
2456 | } | |
2457 | } | |
2458 | } else { | |
2459 | /* Use first available fdset ID */ | |
2460 | QLIST_FOREACH(mon_fdset, &mon_fdsets, next) { | |
2461 | mon_fdset_cur = mon_fdset; | |
2462 | if (fdset_id_prev == mon_fdset_cur->id - 1) { | |
2463 | fdset_id_prev = mon_fdset_cur->id; | |
2464 | continue; | |
2465 | } | |
2466 | break; | |
2467 | } | |
2468 | } | |
2469 | ||
2470 | mon_fdset = g_malloc0(sizeof(*mon_fdset)); | |
2471 | if (has_fdset_id) { | |
2472 | mon_fdset->id = fdset_id; | |
2473 | } else { | |
2474 | mon_fdset->id = fdset_id_prev + 1; | |
2475 | } | |
2476 | ||
2477 | /* The fdset list is ordered by fdset ID */ | |
2478 | if (!mon_fdset_cur) { | |
2479 | QLIST_INSERT_HEAD(&mon_fdsets, mon_fdset, next); | |
2480 | } else if (mon_fdset->id < mon_fdset_cur->id) { | |
2481 | QLIST_INSERT_BEFORE(mon_fdset_cur, mon_fdset, next); | |
2482 | } else { | |
2483 | QLIST_INSERT_AFTER(mon_fdset_cur, mon_fdset, next); | |
2484 | } | |
2485 | } | |
2486 | ||
2487 | mon_fdset_fd = g_malloc0(sizeof(*mon_fdset_fd)); | |
2488 | mon_fdset_fd->fd = fd; | |
2489 | mon_fdset_fd->removed = false; | |
2490 | if (has_opaque) { | |
2491 | mon_fdset_fd->opaque = g_strdup(opaque); | |
2492 | } | |
2493 | QLIST_INSERT_HEAD(&mon_fdset->fds, mon_fdset_fd, next); | |
2494 | ||
2495 | fdinfo = g_malloc0(sizeof(*fdinfo)); | |
2496 | fdinfo->fdset_id = mon_fdset->id; | |
2497 | fdinfo->fd = mon_fdset_fd->fd; | |
2498 | ||
2499 | qemu_mutex_unlock(&mon_fdsets_lock); | |
2500 | return fdinfo; | |
2501 | } | |
2502 | ||
2503 | int monitor_fdset_get_fd(int64_t fdset_id, int flags) | |
2504 | { | |
2505 | #ifdef _WIN32 | |
2506 | return -ENOENT; | |
2507 | #else | |
2508 | MonFdset *mon_fdset; | |
2509 | MonFdsetFd *mon_fdset_fd; | |
2510 | int mon_fd_flags; | |
2511 | int ret; | |
2512 | ||
2513 | qemu_mutex_lock(&mon_fdsets_lock); | |
2514 | QLIST_FOREACH(mon_fdset, &mon_fdsets, next) { | |
2515 | if (mon_fdset->id != fdset_id) { | |
2516 | continue; | |
2517 | } | |
2518 | QLIST_FOREACH(mon_fdset_fd, &mon_fdset->fds, next) { | |
2519 | mon_fd_flags = fcntl(mon_fdset_fd->fd, F_GETFL); | |
2520 | if (mon_fd_flags == -1) { | |
2521 | ret = -errno; | |
2522 | goto out; | |
2523 | } | |
2524 | ||
2525 | if ((flags & O_ACCMODE) == (mon_fd_flags & O_ACCMODE)) { | |
2526 | ret = mon_fdset_fd->fd; | |
2527 | goto out; | |
2528 | } | |
2529 | } | |
2530 | ret = -EACCES; | |
2531 | goto out; | |
2532 | } | |
2533 | ret = -ENOENT; | |
2534 | ||
2535 | out: | |
2536 | qemu_mutex_unlock(&mon_fdsets_lock); | |
2537 | return ret; | |
2538 | #endif | |
2539 | } | |
2540 | ||
2541 | int monitor_fdset_dup_fd_add(int64_t fdset_id, int dup_fd) | |
2542 | { | |
2543 | MonFdset *mon_fdset; | |
2544 | MonFdsetFd *mon_fdset_fd_dup; | |
2545 | ||
2546 | qemu_mutex_lock(&mon_fdsets_lock); | |
2547 | QLIST_FOREACH(mon_fdset, &mon_fdsets, next) { | |
2548 | if (mon_fdset->id != fdset_id) { | |
2549 | continue; | |
2550 | } | |
2551 | QLIST_FOREACH(mon_fdset_fd_dup, &mon_fdset->dup_fds, next) { | |
2552 | if (mon_fdset_fd_dup->fd == dup_fd) { | |
2553 | goto err; | |
2554 | } | |
2555 | } | |
2556 | mon_fdset_fd_dup = g_malloc0(sizeof(*mon_fdset_fd_dup)); | |
2557 | mon_fdset_fd_dup->fd = dup_fd; | |
2558 | QLIST_INSERT_HEAD(&mon_fdset->dup_fds, mon_fdset_fd_dup, next); | |
2559 | qemu_mutex_unlock(&mon_fdsets_lock); | |
2560 | return 0; | |
2561 | } | |
2562 | ||
2563 | err: | |
2564 | qemu_mutex_unlock(&mon_fdsets_lock); | |
2565 | return -1; | |
2566 | } | |
2567 | ||
2568 | static int monitor_fdset_dup_fd_find_remove(int dup_fd, bool remove) | |
2569 | { | |
2570 | MonFdset *mon_fdset; | |
2571 | MonFdsetFd *mon_fdset_fd_dup; | |
2572 | ||
2573 | qemu_mutex_lock(&mon_fdsets_lock); | |
2574 | QLIST_FOREACH(mon_fdset, &mon_fdsets, next) { | |
2575 | QLIST_FOREACH(mon_fdset_fd_dup, &mon_fdset->dup_fds, next) { | |
2576 | if (mon_fdset_fd_dup->fd == dup_fd) { | |
2577 | if (remove) { | |
2578 | QLIST_REMOVE(mon_fdset_fd_dup, next); | |
2579 | if (QLIST_EMPTY(&mon_fdset->dup_fds)) { | |
2580 | monitor_fdset_cleanup(mon_fdset); | |
2581 | } | |
2582 | goto err; | |
2583 | } else { | |
2584 | qemu_mutex_unlock(&mon_fdsets_lock); | |
2585 | return mon_fdset->id; | |
2586 | } | |
2587 | } | |
2588 | } | |
2589 | } | |
2590 | ||
2591 | err: | |
2592 | qemu_mutex_unlock(&mon_fdsets_lock); | |
2593 | return -1; | |
2594 | } | |
2595 | ||
2596 | int monitor_fdset_dup_fd_find(int dup_fd) | |
2597 | { | |
2598 | return monitor_fdset_dup_fd_find_remove(dup_fd, false); | |
2599 | } | |
2600 | ||
2601 | void monitor_fdset_dup_fd_remove(int dup_fd) | |
2602 | { | |
2603 | monitor_fdset_dup_fd_find_remove(dup_fd, true); | |
2604 | } | |
2605 | ||
2606 | int monitor_fd_param(Monitor *mon, const char *fdname, Error **errp) | |
2607 | { | |
2608 | int fd; | |
2609 | Error *local_err = NULL; | |
2610 | ||
2611 | if (!qemu_isdigit(fdname[0]) && mon) { | |
2612 | fd = monitor_get_fd(mon, fdname, &local_err); | |
2613 | } else { | |
2614 | fd = qemu_parse_fd(fdname); | |
2615 | if (fd == -1) { | |
2616 | error_setg(&local_err, "Invalid file descriptor number '%s'", | |
2617 | fdname); | |
2618 | } | |
2619 | } | |
2620 | if (local_err) { | |
2621 | error_propagate(errp, local_err); | |
2622 | assert(fd == -1); | |
2623 | } else { | |
2624 | assert(fd != -1); | |
2625 | } | |
2626 | ||
2627 | return fd; | |
2628 | } | |
2629 | ||
2630 | /* Please update hmp-commands.hx when adding or changing commands */ | |
2631 | static mon_cmd_t info_cmds[] = { | |
2632 | #include "hmp-commands-info.h" | |
2633 | { NULL, NULL, }, | |
2634 | }; | |
2635 | ||
2636 | /* mon_cmds and info_cmds would be sorted at runtime */ | |
2637 | static mon_cmd_t mon_cmds[] = { | |
2638 | #include "hmp-commands.h" | |
2639 | { NULL, NULL, }, | |
2640 | }; | |
2641 | ||
2642 | /*******************************************************************/ | |
2643 | ||
2644 | static const char *pch; | |
2645 | static sigjmp_buf expr_env; | |
2646 | ||
2647 | ||
2648 | static void GCC_FMT_ATTR(2, 3) QEMU_NORETURN | |
2649 | expr_error(Monitor *mon, const char *fmt, ...) | |
2650 | { | |
2651 | va_list ap; | |
2652 | va_start(ap, fmt); | |
2653 | monitor_vprintf(mon, fmt, ap); | |
2654 | monitor_printf(mon, "\n"); | |
2655 | va_end(ap); | |
2656 | siglongjmp(expr_env, 1); | |
2657 | } | |
2658 | ||
2659 | /* return 0 if OK, -1 if not found */ | |
2660 | static int get_monitor_def(target_long *pval, const char *name) | |
2661 | { | |
2662 | const MonitorDef *md = target_monitor_defs(); | |
2663 | CPUState *cs = mon_get_cpu(); | |
2664 | void *ptr; | |
2665 | uint64_t tmp = 0; | |
2666 | int ret; | |
2667 | ||
2668 | if (cs == NULL || md == NULL) { | |
2669 | return -1; | |
2670 | } | |
2671 | ||
2672 | for(; md->name != NULL; md++) { | |
2673 | if (compare_cmd(name, md->name)) { | |
2674 | if (md->get_value) { | |
2675 | *pval = md->get_value(md, md->offset); | |
2676 | } else { | |
2677 | CPUArchState *env = mon_get_cpu_env(); | |
2678 | ptr = (uint8_t *)env + md->offset; | |
2679 | switch(md->type) { | |
2680 | case MD_I32: | |
2681 | *pval = *(int32_t *)ptr; | |
2682 | break; | |
2683 | case MD_TLONG: | |
2684 | *pval = *(target_long *)ptr; | |
2685 | break; | |
2686 | default: | |
2687 | *pval = 0; | |
2688 | break; | |
2689 | } | |
2690 | } | |
2691 | return 0; | |
2692 | } | |
2693 | } | |
2694 | ||
2695 | ret = target_get_monitor_def(cs, name, &tmp); | |
2696 | if (!ret) { | |
2697 | *pval = (target_long) tmp; | |
2698 | } | |
2699 | ||
2700 | return ret; | |
2701 | } | |
2702 | ||
2703 | static void next(void) | |
2704 | { | |
2705 | if (*pch != '\0') { | |
2706 | pch++; | |
2707 | while (qemu_isspace(*pch)) | |
2708 | pch++; | |
2709 | } | |
2710 | } | |
2711 | ||
2712 | static int64_t expr_sum(Monitor *mon); | |
2713 | ||
2714 | static int64_t expr_unary(Monitor *mon) | |
2715 | { | |
2716 | int64_t n; | |
2717 | char *p; | |
2718 | int ret; | |
2719 | ||
2720 | switch(*pch) { | |
2721 | case '+': | |
2722 | next(); | |
2723 | n = expr_unary(mon); | |
2724 | break; | |
2725 | case '-': | |
2726 | next(); | |
2727 | n = -expr_unary(mon); | |
2728 | break; | |
2729 | case '~': | |
2730 | next(); | |
2731 | n = ~expr_unary(mon); | |
2732 | break; | |
2733 | case '(': | |
2734 | next(); | |
2735 | n = expr_sum(mon); | |
2736 | if (*pch != ')') { | |
2737 | expr_error(mon, "')' expected"); | |
2738 | } | |
2739 | next(); | |
2740 | break; | |
2741 | case '\'': | |
2742 | pch++; | |
2743 | if (*pch == '\0') | |
2744 | expr_error(mon, "character constant expected"); | |
2745 | n = *pch; | |
2746 | pch++; | |
2747 | if (*pch != '\'') | |
2748 | expr_error(mon, "missing terminating \' character"); | |
2749 | next(); | |
2750 | break; | |
2751 | case '$': | |
2752 | { | |
2753 | char buf[128], *q; | |
2754 | target_long reg=0; | |
2755 | ||
2756 | pch++; | |
2757 | q = buf; | |
2758 | while ((*pch >= 'a' && *pch <= 'z') || | |
2759 | (*pch >= 'A' && *pch <= 'Z') || | |
2760 | (*pch >= '0' && *pch <= '9') || | |
2761 | *pch == '_' || *pch == '.') { | |
2762 | if ((q - buf) < sizeof(buf) - 1) | |
2763 | *q++ = *pch; | |
2764 | pch++; | |
2765 | } | |
2766 | while (qemu_isspace(*pch)) | |
2767 | pch++; | |
2768 | *q = 0; | |
2769 | ret = get_monitor_def(®, buf); | |
2770 | if (ret < 0) | |
2771 | expr_error(mon, "unknown register"); | |
2772 | n = reg; | |
2773 | } | |
2774 | break; | |
2775 | case '\0': | |
2776 | expr_error(mon, "unexpected end of expression"); | |
2777 | n = 0; | |
2778 | break; | |
2779 | default: | |
2780 | errno = 0; | |
2781 | n = strtoull(pch, &p, 0); | |
2782 | if (errno == ERANGE) { | |
2783 | expr_error(mon, "number too large"); | |
2784 | } | |
2785 | if (pch == p) { | |
2786 | expr_error(mon, "invalid char '%c' in expression", *p); | |
2787 | } | |
2788 | pch = p; | |
2789 | while (qemu_isspace(*pch)) | |
2790 | pch++; | |
2791 | break; | |
2792 | } | |
2793 | return n; | |
2794 | } | |
2795 | ||
2796 | ||
2797 | static int64_t expr_prod(Monitor *mon) | |
2798 | { | |
2799 | int64_t val, val2; | |
2800 | int op; | |
2801 | ||
2802 | val = expr_unary(mon); | |
2803 | for(;;) { | |
2804 | op = *pch; | |
2805 | if (op != '*' && op != '/' && op != '%') | |
2806 | break; | |
2807 | next(); | |
2808 | val2 = expr_unary(mon); | |
2809 | switch(op) { | |
2810 | default: | |
2811 | case '*': | |
2812 | val *= val2; | |
2813 | break; | |
2814 | case '/': | |
2815 | case '%': | |
2816 | if (val2 == 0) | |
2817 | expr_error(mon, "division by zero"); | |
2818 | if (op == '/') | |
2819 | val /= val2; | |
2820 | else | |
2821 | val %= val2; | |
2822 | break; | |
2823 | } | |
2824 | } | |
2825 | return val; | |
2826 | } | |
2827 | ||
2828 | static int64_t expr_logic(Monitor *mon) | |
2829 | { | |
2830 | int64_t val, val2; | |
2831 | int op; | |
2832 | ||
2833 | val = expr_prod(mon); | |
2834 | for(;;) { | |
2835 | op = *pch; | |
2836 | if (op != '&' && op != '|' && op != '^') | |
2837 | break; | |
2838 | next(); | |
2839 | val2 = expr_prod(mon); | |
2840 | switch(op) { | |
2841 | default: | |
2842 | case '&': | |
2843 | val &= val2; | |
2844 | break; | |
2845 | case '|': | |
2846 | val |= val2; | |
2847 | break; | |
2848 | case '^': | |
2849 | val ^= val2; | |
2850 | break; | |
2851 | } | |
2852 | } | |
2853 | return val; | |
2854 | } | |
2855 | ||
2856 | static int64_t expr_sum(Monitor *mon) | |
2857 | { | |
2858 | int64_t val, val2; | |
2859 | int op; | |
2860 | ||
2861 | val = expr_logic(mon); | |
2862 | for(;;) { | |
2863 | op = *pch; | |
2864 | if (op != '+' && op != '-') | |
2865 | break; | |
2866 | next(); | |
2867 | val2 = expr_logic(mon); | |
2868 | if (op == '+') | |
2869 | val += val2; | |
2870 | else | |
2871 | val -= val2; | |
2872 | } | |
2873 | return val; | |
2874 | } | |
2875 | ||
2876 | static int get_expr(Monitor *mon, int64_t *pval, const char **pp) | |
2877 | { | |
2878 | pch = *pp; | |
2879 | if (sigsetjmp(expr_env, 0)) { | |
2880 | *pp = pch; | |
2881 | return -1; | |
2882 | } | |
2883 | while (qemu_isspace(*pch)) | |
2884 | pch++; | |
2885 | *pval = expr_sum(mon); | |
2886 | *pp = pch; | |
2887 | return 0; | |
2888 | } | |
2889 | ||
2890 | static int get_double(Monitor *mon, double *pval, const char **pp) | |
2891 | { | |
2892 | const char *p = *pp; | |
2893 | char *tailp; | |
2894 | double d; | |
2895 | ||
2896 | d = strtod(p, &tailp); | |
2897 | if (tailp == p) { | |
2898 | monitor_printf(mon, "Number expected\n"); | |
2899 | return -1; | |
2900 | } | |
2901 | if (d != d || d - d != 0) { | |
2902 | /* NaN or infinity */ | |
2903 | monitor_printf(mon, "Bad number\n"); | |
2904 | return -1; | |
2905 | } | |
2906 | *pval = d; | |
2907 | *pp = tailp; | |
2908 | return 0; | |
2909 | } | |
2910 | ||
2911 | /* | |
2912 | * Store the command-name in cmdname, and return a pointer to | |
2913 | * the remaining of the command string. | |
2914 | */ | |
2915 | static const char *get_command_name(const char *cmdline, | |
2916 | char *cmdname, size_t nlen) | |
2917 | { | |
2918 | size_t len; | |
2919 | const char *p, *pstart; | |
2920 | ||
2921 | p = cmdline; | |
2922 | while (qemu_isspace(*p)) | |
2923 | p++; | |
2924 | if (*p == '\0') | |
2925 | return NULL; | |
2926 | pstart = p; | |
2927 | while (*p != '\0' && *p != '/' && !qemu_isspace(*p)) | |
2928 | p++; | |
2929 | len = p - pstart; | |
2930 | if (len > nlen - 1) | |
2931 | len = nlen - 1; | |
2932 | memcpy(cmdname, pstart, len); | |
2933 | cmdname[len] = '\0'; | |
2934 | return p; | |
2935 | } | |
2936 | ||
2937 | /** | |
2938 | * Read key of 'type' into 'key' and return the current | |
2939 | * 'type' pointer. | |
2940 | */ | |
2941 | static char *key_get_info(const char *type, char **key) | |
2942 | { | |
2943 | size_t len; | |
2944 | char *p, *str; | |
2945 | ||
2946 | if (*type == ',') | |
2947 | type++; | |
2948 | ||
2949 | p = strchr(type, ':'); | |
2950 | if (!p) { | |
2951 | *key = NULL; | |
2952 | return NULL; | |
2953 | } | |
2954 | len = p - type; | |
2955 | ||
2956 | str = g_malloc(len + 1); | |
2957 | memcpy(str, type, len); | |
2958 | str[len] = '\0'; | |
2959 | ||
2960 | *key = str; | |
2961 | return ++p; | |
2962 | } | |
2963 | ||
2964 | static int default_fmt_format = 'x'; | |
2965 | static int default_fmt_size = 4; | |
2966 | ||
2967 | static int is_valid_option(const char *c, const char *typestr) | |
2968 | { | |
2969 | char option[3]; | |
2970 | ||
2971 | option[0] = '-'; | |
2972 | option[1] = *c; | |
2973 | option[2] = '\0'; | |
2974 | ||
2975 | typestr = strstr(typestr, option); | |
2976 | return (typestr != NULL); | |
2977 | } | |
2978 | ||
2979 | static const mon_cmd_t *search_dispatch_table(const mon_cmd_t *disp_table, | |
2980 | const char *cmdname) | |
2981 | { | |
2982 | const mon_cmd_t *cmd; | |
2983 | ||
2984 | for (cmd = disp_table; cmd->name != NULL; cmd++) { | |
2985 | if (compare_cmd(cmdname, cmd->name)) { | |
2986 | return cmd; | |
2987 | } | |
2988 | } | |
2989 | ||
2990 | return NULL; | |
2991 | } | |
2992 | ||
2993 | /* | |
2994 | * Parse command name from @cmdp according to command table @table. | |
2995 | * If blank, return NULL. | |
2996 | * Else, if no valid command can be found, report to @mon, and return | |
2997 | * NULL. | |
2998 | * Else, change @cmdp to point right behind the name, and return its | |
2999 | * command table entry. | |
3000 | * Do not assume the return value points into @table! It doesn't when | |
3001 | * the command is found in a sub-command table. | |
3002 | */ | |
3003 | static const mon_cmd_t *monitor_parse_command(Monitor *mon, | |
3004 | const char *cmdp_start, | |
3005 | const char **cmdp, | |
3006 | mon_cmd_t *table) | |
3007 | { | |
3008 | const char *p; | |
3009 | const mon_cmd_t *cmd; | |
3010 | char cmdname[256]; | |
3011 | ||
3012 | /* extract the command name */ | |
3013 | p = get_command_name(*cmdp, cmdname, sizeof(cmdname)); | |
3014 | if (!p) | |
3015 | return NULL; | |
3016 | ||
3017 | cmd = search_dispatch_table(table, cmdname); | |
3018 | if (!cmd) { | |
3019 | monitor_printf(mon, "unknown command: '%.*s'\n", | |
3020 | (int)(p - cmdp_start), cmdp_start); | |
3021 | return NULL; | |
3022 | } | |
3023 | if (runstate_check(RUN_STATE_PRECONFIG) && !cmd_can_preconfig(cmd)) { | |
3024 | monitor_printf(mon, "Command '%.*s' not available with -preconfig " | |
3025 | "until after exit_preconfig.\n", | |
3026 | (int)(p - cmdp_start), cmdp_start); | |
3027 | return NULL; | |
3028 | } | |
3029 | ||
3030 | /* filter out following useless space */ | |
3031 | while (qemu_isspace(*p)) { | |
3032 | p++; | |
3033 | } | |
3034 | ||
3035 | *cmdp = p; | |
3036 | /* search sub command */ | |
3037 | if (cmd->sub_table != NULL && *p != '\0') { | |
3038 | return monitor_parse_command(mon, cmdp_start, cmdp, cmd->sub_table); | |
3039 | } | |
3040 | ||
3041 | return cmd; | |
3042 | } | |
3043 | ||
3044 | /* | |
3045 | * Parse arguments for @cmd. | |
3046 | * If it can't be parsed, report to @mon, and return NULL. | |
3047 | * Else, insert command arguments into a QDict, and return it. | |
3048 | * Note: On success, caller has to free the QDict structure. | |
3049 | */ | |
3050 | ||
3051 | static QDict *monitor_parse_arguments(Monitor *mon, | |
3052 | const char **endp, | |
3053 | const mon_cmd_t *cmd) | |
3054 | { | |
3055 | const char *typestr; | |
3056 | char *key; | |
3057 | int c; | |
3058 | const char *p = *endp; | |
3059 | char buf[1024]; | |
3060 | QDict *qdict = qdict_new(); | |
3061 | ||
3062 | /* parse the parameters */ | |
3063 | typestr = cmd->args_type; | |
3064 | for(;;) { | |
3065 | typestr = key_get_info(typestr, &key); | |
3066 | if (!typestr) | |
3067 | break; | |
3068 | c = *typestr; | |
3069 | typestr++; | |
3070 | switch(c) { | |
3071 | case 'F': | |
3072 | case 'B': | |
3073 | case 's': | |
3074 | { | |
3075 | int ret; | |
3076 | ||
3077 | while (qemu_isspace(*p)) | |
3078 | p++; | |
3079 | if (*typestr == '?') { | |
3080 | typestr++; | |
3081 | if (*p == '\0') { | |
3082 | /* no optional string: NULL argument */ | |
3083 | break; | |
3084 | } | |
3085 | } | |
3086 | ret = get_str(buf, sizeof(buf), &p); | |
3087 | if (ret < 0) { | |
3088 | switch(c) { | |
3089 | case 'F': | |
3090 | monitor_printf(mon, "%s: filename expected\n", | |
3091 | cmd->name); | |
3092 | break; | |
3093 | case 'B': | |
3094 | monitor_printf(mon, "%s: block device name expected\n", | |
3095 | cmd->name); | |
3096 | break; | |
3097 | default: | |
3098 | monitor_printf(mon, "%s: string expected\n", cmd->name); | |
3099 | break; | |
3100 | } | |
3101 | goto fail; | |
3102 | } | |
3103 | qdict_put_str(qdict, key, buf); | |
3104 | } | |
3105 | break; | |
3106 | case 'O': | |
3107 | { | |
3108 | QemuOptsList *opts_list; | |
3109 | QemuOpts *opts; | |
3110 | ||
3111 | opts_list = qemu_find_opts(key); | |
3112 | if (!opts_list || opts_list->desc->name) { | |
3113 | goto bad_type; | |
3114 | } | |
3115 | while (qemu_isspace(*p)) { | |
3116 | p++; | |
3117 | } | |
3118 | if (!*p) | |
3119 | break; | |
3120 | if (get_str(buf, sizeof(buf), &p) < 0) { | |
3121 | goto fail; | |
3122 | } | |
3123 | opts = qemu_opts_parse_noisily(opts_list, buf, true); | |
3124 | if (!opts) { | |
3125 | goto fail; | |
3126 | } | |
3127 | qemu_opts_to_qdict(opts, qdict); | |
3128 | qemu_opts_del(opts); | |
3129 | } | |
3130 | break; | |
3131 | case '/': | |
3132 | { | |
3133 | int count, format, size; | |
3134 | ||
3135 | while (qemu_isspace(*p)) | |
3136 | p++; | |
3137 | if (*p == '/') { | |
3138 | /* format found */ | |
3139 | p++; | |
3140 | count = 1; | |
3141 | if (qemu_isdigit(*p)) { | |
3142 | count = 0; | |
3143 | while (qemu_isdigit(*p)) { | |
3144 | count = count * 10 + (*p - '0'); | |
3145 | p++; | |
3146 | } | |
3147 | } | |
3148 | size = -1; | |
3149 | format = -1; | |
3150 | for(;;) { | |
3151 | switch(*p) { | |
3152 | case 'o': | |
3153 | case 'd': | |
3154 | case 'u': | |
3155 | case 'x': | |
3156 | case 'i': | |
3157 | case 'c': | |
3158 | format = *p++; | |
3159 | break; | |
3160 | case 'b': | |
3161 | size = 1; | |
3162 | p++; | |
3163 | break; | |
3164 | case 'h': | |
3165 | size = 2; | |
3166 | p++; | |
3167 | break; | |
3168 | case 'w': | |
3169 | size = 4; | |
3170 | p++; | |
3171 | break; | |
3172 | case 'g': | |
3173 | case 'L': | |
3174 | size = 8; | |
3175 | p++; | |
3176 | break; | |
3177 | default: | |
3178 | goto next; | |
3179 | } | |
3180 | } | |
3181 | next: | |
3182 | if (*p != '\0' && !qemu_isspace(*p)) { | |
3183 | monitor_printf(mon, "invalid char in format: '%c'\n", | |
3184 | *p); | |
3185 | goto fail; | |
3186 | } | |
3187 | if (format < 0) | |
3188 | format = default_fmt_format; | |
3189 | if (format != 'i') { | |
3190 | /* for 'i', not specifying a size gives -1 as size */ | |
3191 | if (size < 0) | |
3192 | size = default_fmt_size; | |
3193 | default_fmt_size = size; | |
3194 | } | |
3195 | default_fmt_format = format; | |
3196 | } else { | |
3197 | count = 1; | |
3198 | format = default_fmt_format; | |
3199 | if (format != 'i') { | |
3200 | size = default_fmt_size; | |
3201 | } else { | |
3202 | size = -1; | |
3203 | } | |
3204 | } | |
3205 | qdict_put_int(qdict, "count", count); | |
3206 | qdict_put_int(qdict, "format", format); | |
3207 | qdict_put_int(qdict, "size", size); | |
3208 | } | |
3209 | break; | |
3210 | case 'i': | |
3211 | case 'l': | |
3212 | case 'M': | |
3213 | { | |
3214 | int64_t val; | |
3215 | ||
3216 | while (qemu_isspace(*p)) | |
3217 | p++; | |
3218 | if (*typestr == '?' || *typestr == '.') { | |
3219 | if (*typestr == '?') { | |
3220 | if (*p == '\0') { | |
3221 | typestr++; | |
3222 | break; | |
3223 | } | |
3224 | } else { | |
3225 | if (*p == '.') { | |
3226 | p++; | |
3227 | while (qemu_isspace(*p)) | |
3228 | p++; | |
3229 | } else { | |
3230 | typestr++; | |
3231 | break; | |
3232 | } | |
3233 | } | |
3234 | typestr++; | |
3235 | } | |
3236 | if (get_expr(mon, &val, &p)) | |
3237 | goto fail; | |
3238 | /* Check if 'i' is greater than 32-bit */ | |
3239 | if ((c == 'i') && ((val >> 32) & 0xffffffff)) { | |
3240 | monitor_printf(mon, "\'%s\' has failed: ", cmd->name); | |
3241 | monitor_printf(mon, "integer is for 32-bit values\n"); | |
3242 | goto fail; | |
3243 | } else if (c == 'M') { | |
3244 | if (val < 0) { | |
3245 | monitor_printf(mon, "enter a positive value\n"); | |
3246 | goto fail; | |
3247 | } | |
3248 | val *= MiB; | |
3249 | } | |
3250 | qdict_put_int(qdict, key, val); | |
3251 | } | |
3252 | break; | |
3253 | case 'o': | |
3254 | { | |
3255 | int ret; | |
3256 | uint64_t val; | |
3257 | const char *end; | |
3258 | ||
3259 | while (qemu_isspace(*p)) { | |
3260 | p++; | |
3261 | } | |
3262 | if (*typestr == '?') { | |
3263 | typestr++; | |
3264 | if (*p == '\0') { | |
3265 | break; | |
3266 | } | |
3267 | } | |
3268 | ret = qemu_strtosz_MiB(p, &end, &val); | |
3269 | if (ret < 0 || val > INT64_MAX) { | |
3270 | monitor_printf(mon, "invalid size\n"); | |
3271 | goto fail; | |
3272 | } | |
3273 | qdict_put_int(qdict, key, val); | |
3274 | p = end; | |
3275 | } | |
3276 | break; | |
3277 | case 'T': | |
3278 | { | |
3279 | double val; | |
3280 | ||
3281 | while (qemu_isspace(*p)) | |
3282 | p++; | |
3283 | if (*typestr == '?') { | |
3284 | typestr++; | |
3285 | if (*p == '\0') { | |
3286 | break; | |
3287 | } | |
3288 | } | |
3289 | if (get_double(mon, &val, &p) < 0) { | |
3290 | goto fail; | |
3291 | } | |
3292 | if (p[0] && p[1] == 's') { | |
3293 | switch (*p) { | |
3294 | case 'm': | |
3295 | val /= 1e3; p += 2; break; | |
3296 | case 'u': | |
3297 | val /= 1e6; p += 2; break; | |
3298 | case 'n': | |
3299 | val /= 1e9; p += 2; break; | |
3300 | } | |
3301 | } | |
3302 | if (*p && !qemu_isspace(*p)) { | |
3303 | monitor_printf(mon, "Unknown unit suffix\n"); | |
3304 | goto fail; | |
3305 | } | |
3306 | qdict_put(qdict, key, qnum_from_double(val)); | |
3307 | } | |
3308 | break; | |
3309 | case 'b': | |
3310 | { | |
3311 | const char *beg; | |
3312 | bool val; | |
3313 | ||
3314 | while (qemu_isspace(*p)) { | |
3315 | p++; | |
3316 | } | |
3317 | beg = p; | |
3318 | while (qemu_isgraph(*p)) { | |
3319 | p++; | |
3320 | } | |
3321 | if (p - beg == 2 && !memcmp(beg, "on", p - beg)) { | |
3322 | val = true; | |
3323 | } else if (p - beg == 3 && !memcmp(beg, "off", p - beg)) { | |
3324 | val = false; | |
3325 | } else { | |
3326 | monitor_printf(mon, "Expected 'on' or 'off'\n"); | |
3327 | goto fail; | |
3328 | } | |
3329 | qdict_put_bool(qdict, key, val); | |
3330 | } | |
3331 | break; | |
3332 | case '-': | |
3333 | { | |
3334 | const char *tmp = p; | |
3335 | int skip_key = 0; | |
3336 | /* option */ | |
3337 | ||
3338 | c = *typestr++; | |
3339 | if (c == '\0') | |
3340 | goto bad_type; | |
3341 | while (qemu_isspace(*p)) | |
3342 | p++; | |
3343 | if (*p == '-') { | |
3344 | p++; | |
3345 | if(c != *p) { | |
3346 | if(!is_valid_option(p, typestr)) { | |
3347 | ||
3348 | monitor_printf(mon, "%s: unsupported option -%c\n", | |
3349 | cmd->name, *p); | |
3350 | goto fail; | |
3351 | } else { | |
3352 | skip_key = 1; | |
3353 | } | |
3354 | } | |
3355 | if(skip_key) { | |
3356 | p = tmp; | |
3357 | } else { | |
3358 | /* has option */ | |
3359 | p++; | |
3360 | qdict_put_bool(qdict, key, true); | |
3361 | } | |
3362 | } | |
3363 | } | |
3364 | break; | |
3365 | case 'S': | |
3366 | { | |
3367 | /* package all remaining string */ | |
3368 | int len; | |
3369 | ||
3370 | while (qemu_isspace(*p)) { | |
3371 | p++; | |
3372 | } | |
3373 | if (*typestr == '?') { | |
3374 | typestr++; | |
3375 | if (*p == '\0') { | |
3376 | /* no remaining string: NULL argument */ | |
3377 | break; | |
3378 | } | |
3379 | } | |
3380 | len = strlen(p); | |
3381 | if (len <= 0) { | |
3382 | monitor_printf(mon, "%s: string expected\n", | |
3383 | cmd->name); | |
3384 | goto fail; | |
3385 | } | |
3386 | qdict_put_str(qdict, key, p); | |
3387 | p += len; | |
3388 | } | |
3389 | break; | |
3390 | default: | |
3391 | bad_type: | |
3392 | monitor_printf(mon, "%s: unknown type '%c'\n", cmd->name, c); | |
3393 | goto fail; | |
3394 | } | |
3395 | g_free(key); | |
3396 | key = NULL; | |
3397 | } | |
3398 | /* check that all arguments were parsed */ | |
3399 | while (qemu_isspace(*p)) | |
3400 | p++; | |
3401 | if (*p != '\0') { | |
3402 | monitor_printf(mon, "%s: extraneous characters at the end of line\n", | |
3403 | cmd->name); | |
3404 | goto fail; | |
3405 | } | |
3406 | ||
3407 | return qdict; | |
3408 | ||
3409 | fail: | |
3410 | qobject_unref(qdict); | |
3411 | g_free(key); | |
3412 | return NULL; | |
3413 | } | |
3414 | ||
3415 | static void handle_hmp_command(Monitor *mon, const char *cmdline) | |
3416 | { | |
3417 | QDict *qdict; | |
3418 | const mon_cmd_t *cmd; | |
3419 | const char *cmd_start = cmdline; | |
3420 | ||
3421 | trace_handle_hmp_command(mon, cmdline); | |
3422 | ||
3423 | cmd = monitor_parse_command(mon, cmdline, &cmdline, mon->cmd_table); | |
3424 | if (!cmd) { | |
3425 | return; | |
3426 | } | |
3427 | ||
3428 | qdict = monitor_parse_arguments(mon, &cmdline, cmd); | |
3429 | if (!qdict) { | |
3430 | while (cmdline > cmd_start && qemu_isspace(cmdline[-1])) { | |
3431 | cmdline--; | |
3432 | } | |
3433 | monitor_printf(mon, "Try \"help %.*s\" for more information\n", | |
3434 | (int)(cmdline - cmd_start), cmd_start); | |
3435 | return; | |
3436 | } | |
3437 | ||
3438 | cmd->cmd(mon, qdict); | |
3439 | qobject_unref(qdict); | |
3440 | } | |
3441 | ||
3442 | static void cmd_completion(Monitor *mon, const char *name, const char *list) | |
3443 | { | |
3444 | const char *p, *pstart; | |
3445 | char cmd[128]; | |
3446 | int len; | |
3447 | ||
3448 | p = list; | |
3449 | for(;;) { | |
3450 | pstart = p; | |
3451 | p = qemu_strchrnul(p, '|'); | |
3452 | len = p - pstart; | |
3453 | if (len > sizeof(cmd) - 2) | |
3454 | len = sizeof(cmd) - 2; | |
3455 | memcpy(cmd, pstart, len); | |
3456 | cmd[len] = '\0'; | |
3457 | if (name[0] == '\0' || !strncmp(name, cmd, strlen(name))) { | |
3458 | readline_add_completion(mon->rs, cmd); | |
3459 | } | |
3460 | if (*p == '\0') | |
3461 | break; | |
3462 | p++; | |
3463 | } | |
3464 | } | |
3465 | ||
3466 | static void file_completion(Monitor *mon, const char *input) | |
3467 | { | |
3468 | DIR *ffs; | |
3469 | struct dirent *d; | |
3470 | char path[1024]; | |
3471 | char file[1024], file_prefix[1024]; | |
3472 | int input_path_len; | |
3473 | const char *p; | |
3474 | ||
3475 | p = strrchr(input, '/'); | |
3476 | if (!p) { | |
3477 | input_path_len = 0; | |
3478 | pstrcpy(file_prefix, sizeof(file_prefix), input); | |
3479 | pstrcpy(path, sizeof(path), "."); | |
3480 | } else { | |
3481 | input_path_len = p - input + 1; | |
3482 | memcpy(path, input, input_path_len); | |
3483 | if (input_path_len > sizeof(path) - 1) | |
3484 | input_path_len = sizeof(path) - 1; | |
3485 | path[input_path_len] = '\0'; | |
3486 | pstrcpy(file_prefix, sizeof(file_prefix), p + 1); | |
3487 | } | |
3488 | ||
3489 | ffs = opendir(path); | |
3490 | if (!ffs) | |
3491 | return; | |
3492 | for(;;) { | |
3493 | struct stat sb; | |
3494 | d = readdir(ffs); | |
3495 | if (!d) | |
3496 | break; | |
3497 | ||
3498 | if (strcmp(d->d_name, ".") == 0 || strcmp(d->d_name, "..") == 0) { | |
3499 | continue; | |
3500 | } | |
3501 | ||
3502 | if (strstart(d->d_name, file_prefix, NULL)) { | |
3503 | memcpy(file, input, input_path_len); | |
3504 | if (input_path_len < sizeof(file)) | |
3505 | pstrcpy(file + input_path_len, sizeof(file) - input_path_len, | |
3506 | d->d_name); | |
3507 | /* stat the file to find out if it's a directory. | |
3508 | * In that case add a slash to speed up typing long paths | |
3509 | */ | |
3510 | if (stat(file, &sb) == 0 && S_ISDIR(sb.st_mode)) { | |
3511 | pstrcat(file, sizeof(file), "/"); | |
3512 | } | |
3513 | readline_add_completion(mon->rs, file); | |
3514 | } | |
3515 | } | |
3516 | closedir(ffs); | |
3517 | } | |
3518 | ||
3519 | static const char *next_arg_type(const char *typestr) | |
3520 | { | |
3521 | const char *p = strchr(typestr, ':'); | |
3522 | return (p != NULL ? ++p : typestr); | |
3523 | } | |
3524 | ||
3525 | static void add_completion_option(ReadLineState *rs, const char *str, | |
3526 | const char *option) | |
3527 | { | |
3528 | if (!str || !option) { | |
3529 | return; | |
3530 | } | |
3531 | if (!strncmp(option, str, strlen(str))) { | |
3532 | readline_add_completion(rs, option); | |
3533 | } | |
3534 | } | |
3535 | ||
3536 | void chardev_add_completion(ReadLineState *rs, int nb_args, const char *str) | |
3537 | { | |
3538 | size_t len; | |
3539 | ChardevBackendInfoList *list, *start; | |
3540 | ||
3541 | if (nb_args != 2) { | |
3542 | return; | |
3543 | } | |
3544 | len = strlen(str); | |
3545 | readline_set_completion_index(rs, len); | |
3546 | ||
3547 | start = list = qmp_query_chardev_backends(NULL); | |
3548 | while (list) { | |
3549 | const char *chr_name = list->value->name; | |
3550 | ||
3551 | if (!strncmp(chr_name, str, len)) { | |
3552 | readline_add_completion(rs, chr_name); | |
3553 | } | |
3554 | list = list->next; | |
3555 | } | |
3556 | qapi_free_ChardevBackendInfoList(start); | |
3557 | } | |
3558 | ||
3559 | void netdev_add_completion(ReadLineState *rs, int nb_args, const char *str) | |
3560 | { | |
3561 | size_t len; | |
3562 | int i; | |
3563 | ||
3564 | if (nb_args != 2) { | |
3565 | return; | |
3566 | } | |
3567 | len = strlen(str); | |
3568 | readline_set_completion_index(rs, len); | |
3569 | for (i = 0; i < NET_CLIENT_DRIVER__MAX; i++) { | |
3570 | add_completion_option(rs, str, NetClientDriver_str(i)); | |
3571 | } | |
3572 | } | |
3573 | ||
3574 | void device_add_completion(ReadLineState *rs, int nb_args, const char *str) | |
3575 | { | |
3576 | GSList *list, *elt; | |
3577 | size_t len; | |
3578 | ||
3579 | if (nb_args != 2) { | |
3580 | return; | |
3581 | } | |
3582 | ||
3583 | len = strlen(str); | |
3584 | readline_set_completion_index(rs, len); | |
3585 | list = elt = object_class_get_list(TYPE_DEVICE, false); | |
3586 | while (elt) { | |
3587 | const char *name; | |
3588 | DeviceClass *dc = OBJECT_CLASS_CHECK(DeviceClass, elt->data, | |
3589 | TYPE_DEVICE); | |
3590 | name = object_class_get_name(OBJECT_CLASS(dc)); | |
3591 | ||
3592 | if (dc->user_creatable | |
3593 | && !strncmp(name, str, len)) { | |
3594 | readline_add_completion(rs, name); | |
3595 | } | |
3596 | elt = elt->next; | |
3597 | } | |
3598 | g_slist_free(list); | |
3599 | } | |
3600 | ||
3601 | void object_add_completion(ReadLineState *rs, int nb_args, const char *str) | |
3602 | { | |
3603 | GSList *list, *elt; | |
3604 | size_t len; | |
3605 | ||
3606 | if (nb_args != 2) { | |
3607 | return; | |
3608 | } | |
3609 | ||
3610 | len = strlen(str); | |
3611 | readline_set_completion_index(rs, len); | |
3612 | list = elt = object_class_get_list(TYPE_USER_CREATABLE, false); | |
3613 | while (elt) { | |
3614 | const char *name; | |
3615 | ||
3616 | name = object_class_get_name(OBJECT_CLASS(elt->data)); | |
3617 | if (!strncmp(name, str, len) && strcmp(name, TYPE_USER_CREATABLE)) { | |
3618 | readline_add_completion(rs, name); | |
3619 | } | |
3620 | elt = elt->next; | |
3621 | } | |
3622 | g_slist_free(list); | |
3623 | } | |
3624 | ||
3625 | static void peripheral_device_del_completion(ReadLineState *rs, | |
3626 | const char *str, size_t len) | |
3627 | { | |
3628 | Object *peripheral = container_get(qdev_get_machine(), "/peripheral"); | |
3629 | GSList *list, *item; | |
3630 | ||
3631 | list = qdev_build_hotpluggable_device_list(peripheral); | |
3632 | if (!list) { | |
3633 | return; | |
3634 | } | |
3635 | ||
3636 | for (item = list; item; item = g_slist_next(item)) { | |
3637 | DeviceState *dev = item->data; | |
3638 | ||
3639 | if (dev->id && !strncmp(str, dev->id, len)) { | |
3640 | readline_add_completion(rs, dev->id); | |
3641 | } | |
3642 | } | |
3643 | ||
3644 | g_slist_free(list); | |
3645 | } | |
3646 | ||
3647 | void chardev_remove_completion(ReadLineState *rs, int nb_args, const char *str) | |
3648 | { | |
3649 | size_t len; | |
3650 | ChardevInfoList *list, *start; | |
3651 | ||
3652 | if (nb_args != 2) { | |
3653 | return; | |
3654 | } | |
3655 | len = strlen(str); | |
3656 | readline_set_completion_index(rs, len); | |
3657 | ||
3658 | start = list = qmp_query_chardev(NULL); | |
3659 | while (list) { | |
3660 | ChardevInfo *chr = list->value; | |
3661 | ||
3662 | if (!strncmp(chr->label, str, len)) { | |
3663 | readline_add_completion(rs, chr->label); | |
3664 | } | |
3665 | list = list->next; | |
3666 | } | |
3667 | qapi_free_ChardevInfoList(start); | |
3668 | } | |
3669 | ||
3670 | static void ringbuf_completion(ReadLineState *rs, const char *str) | |
3671 | { | |
3672 | size_t len; | |
3673 | ChardevInfoList *list, *start; | |
3674 | ||
3675 | len = strlen(str); | |
3676 | readline_set_completion_index(rs, len); | |
3677 | ||
3678 | start = list = qmp_query_chardev(NULL); | |
3679 | while (list) { | |
3680 | ChardevInfo *chr_info = list->value; | |
3681 | ||
3682 | if (!strncmp(chr_info->label, str, len)) { | |
3683 | Chardev *chr = qemu_chr_find(chr_info->label); | |
3684 | if (chr && CHARDEV_IS_RINGBUF(chr)) { | |
3685 | readline_add_completion(rs, chr_info->label); | |
3686 | } | |
3687 | } | |
3688 | list = list->next; | |
3689 | } | |
3690 | qapi_free_ChardevInfoList(start); | |
3691 | } | |
3692 | ||
3693 | void ringbuf_write_completion(ReadLineState *rs, int nb_args, const char *str) | |
3694 | { | |
3695 | if (nb_args != 2) { | |
3696 | return; | |
3697 | } | |
3698 | ringbuf_completion(rs, str); | |
3699 | } | |
3700 | ||
3701 | void device_del_completion(ReadLineState *rs, int nb_args, const char *str) | |
3702 | { | |
3703 | size_t len; | |
3704 | ||
3705 | if (nb_args != 2) { | |
3706 | return; | |
3707 | } | |
3708 | ||
3709 | len = strlen(str); | |
3710 | readline_set_completion_index(rs, len); | |
3711 | peripheral_device_del_completion(rs, str, len); | |
3712 | } | |
3713 | ||
3714 | void object_del_completion(ReadLineState *rs, int nb_args, const char *str) | |
3715 | { | |
3716 | ObjectPropertyInfoList *list, *start; | |
3717 | size_t len; | |
3718 | ||
3719 | if (nb_args != 2) { | |
3720 | return; | |
3721 | } | |
3722 | len = strlen(str); | |
3723 | readline_set_completion_index(rs, len); | |
3724 | ||
3725 | start = list = qmp_qom_list("/objects", NULL); | |
3726 | while (list) { | |
3727 | ObjectPropertyInfo *info = list->value; | |
3728 | ||
3729 | if (!strncmp(info->type, "child<", 5) | |
3730 | && !strncmp(info->name, str, len)) { | |
3731 | readline_add_completion(rs, info->name); | |
3732 | } | |
3733 | list = list->next; | |
3734 | } | |
3735 | qapi_free_ObjectPropertyInfoList(start); | |
3736 | } | |
3737 | ||
3738 | void sendkey_completion(ReadLineState *rs, int nb_args, const char *str) | |
3739 | { | |
3740 | int i; | |
3741 | char *sep; | |
3742 | size_t len; | |
3743 | ||
3744 | if (nb_args != 2) { | |
3745 | return; | |
3746 | } | |
3747 | sep = strrchr(str, '-'); | |
3748 | if (sep) { | |
3749 | str = sep + 1; | |
3750 | } | |
3751 | len = strlen(str); | |
3752 | readline_set_completion_index(rs, len); | |
3753 | for (i = 0; i < Q_KEY_CODE__MAX; i++) { | |
3754 | if (!strncmp(str, QKeyCode_str(i), len)) { | |
3755 | readline_add_completion(rs, QKeyCode_str(i)); | |
3756 | } | |
3757 | } | |
3758 | } | |
3759 | ||
3760 | void set_link_completion(ReadLineState *rs, int nb_args, const char *str) | |
3761 | { | |
3762 | size_t len; | |
3763 | ||
3764 | len = strlen(str); | |
3765 | readline_set_completion_index(rs, len); | |
3766 | if (nb_args == 2) { | |
3767 | NetClientState *ncs[MAX_QUEUE_NUM]; | |
3768 | int count, i; | |
3769 | count = qemu_find_net_clients_except(NULL, ncs, | |
3770 | NET_CLIENT_DRIVER_NONE, | |
3771 | MAX_QUEUE_NUM); | |
3772 | for (i = 0; i < MIN(count, MAX_QUEUE_NUM); i++) { | |
3773 | const char *name = ncs[i]->name; | |
3774 | if (!strncmp(str, name, len)) { | |
3775 | readline_add_completion(rs, name); | |
3776 | } | |
3777 | } | |
3778 | } else if (nb_args == 3) { | |
3779 | add_completion_option(rs, str, "on"); | |
3780 | add_completion_option(rs, str, "off"); | |
3781 | } | |
3782 | } | |
3783 | ||
3784 | void netdev_del_completion(ReadLineState *rs, int nb_args, const char *str) | |
3785 | { | |
3786 | int len, count, i; | |
3787 | NetClientState *ncs[MAX_QUEUE_NUM]; | |
3788 | ||
3789 | if (nb_args != 2) { | |
3790 | return; | |
3791 | } | |
3792 | ||
3793 | len = strlen(str); | |
3794 | readline_set_completion_index(rs, len); | |
3795 | count = qemu_find_net_clients_except(NULL, ncs, NET_CLIENT_DRIVER_NIC, | |
3796 | MAX_QUEUE_NUM); | |
3797 | for (i = 0; i < MIN(count, MAX_QUEUE_NUM); i++) { | |
3798 | QemuOpts *opts; | |
3799 | const char *name = ncs[i]->name; | |
3800 | if (strncmp(str, name, len)) { | |
3801 | continue; | |
3802 | } | |
3803 | opts = qemu_opts_find(qemu_find_opts_err("netdev", NULL), name); | |
3804 | if (opts) { | |
3805 | readline_add_completion(rs, name); | |
3806 | } | |
3807 | } | |
3808 | } | |
3809 | ||
3810 | void info_trace_events_completion(ReadLineState *rs, int nb_args, const char *str) | |
3811 | { | |
3812 | size_t len; | |
3813 | ||
3814 | len = strlen(str); | |
3815 | readline_set_completion_index(rs, len); | |
3816 | if (nb_args == 2) { | |
3817 | TraceEventIter iter; | |
3818 | TraceEvent *ev; | |
3819 | char *pattern = g_strdup_printf("%s*", str); | |
3820 | trace_event_iter_init(&iter, pattern); | |
3821 | while ((ev = trace_event_iter_next(&iter)) != NULL) { | |
3822 | readline_add_completion(rs, trace_event_get_name(ev)); | |
3823 | } | |
3824 | g_free(pattern); | |
3825 | } | |
3826 | } | |
3827 | ||
3828 | void trace_event_completion(ReadLineState *rs, int nb_args, const char *str) | |
3829 | { | |
3830 | size_t len; | |
3831 | ||
3832 | len = strlen(str); | |
3833 | readline_set_completion_index(rs, len); | |
3834 | if (nb_args == 2) { | |
3835 | TraceEventIter iter; | |
3836 | TraceEvent *ev; | |
3837 | char *pattern = g_strdup_printf("%s*", str); | |
3838 | trace_event_iter_init(&iter, pattern); | |
3839 | while ((ev = trace_event_iter_next(&iter)) != NULL) { | |
3840 | readline_add_completion(rs, trace_event_get_name(ev)); | |
3841 | } | |
3842 | g_free(pattern); | |
3843 | } else if (nb_args == 3) { | |
3844 | add_completion_option(rs, str, "on"); | |
3845 | add_completion_option(rs, str, "off"); | |
3846 | } | |
3847 | } | |
3848 | ||
3849 | void watchdog_action_completion(ReadLineState *rs, int nb_args, const char *str) | |
3850 | { | |
3851 | int i; | |
3852 | ||
3853 | if (nb_args != 2) { | |
3854 | return; | |
3855 | } | |
3856 | readline_set_completion_index(rs, strlen(str)); | |
3857 | for (i = 0; i < WATCHDOG_ACTION__MAX; i++) { | |
3858 | add_completion_option(rs, str, WatchdogAction_str(i)); | |
3859 | } | |
3860 | } | |
3861 | ||
3862 | void migrate_set_capability_completion(ReadLineState *rs, int nb_args, | |
3863 | const char *str) | |
3864 | { | |
3865 | size_t len; | |
3866 | ||
3867 | len = strlen(str); | |
3868 | readline_set_completion_index(rs, len); | |
3869 | if (nb_args == 2) { | |
3870 | int i; | |
3871 | for (i = 0; i < MIGRATION_CAPABILITY__MAX; i++) { | |
3872 | const char *name = MigrationCapability_str(i); | |
3873 | if (!strncmp(str, name, len)) { | |
3874 | readline_add_completion(rs, name); | |
3875 | } | |
3876 | } | |
3877 | } else if (nb_args == 3) { | |
3878 | add_completion_option(rs, str, "on"); | |
3879 | add_completion_option(rs, str, "off"); | |
3880 | } | |
3881 | } | |
3882 | ||
3883 | void migrate_set_parameter_completion(ReadLineState *rs, int nb_args, | |
3884 | const char *str) | |
3885 | { | |
3886 | size_t len; | |
3887 | ||
3888 | len = strlen(str); | |
3889 | readline_set_completion_index(rs, len); | |
3890 | if (nb_args == 2) { | |
3891 | int i; | |
3892 | for (i = 0; i < MIGRATION_PARAMETER__MAX; i++) { | |
3893 | const char *name = MigrationParameter_str(i); | |
3894 | if (!strncmp(str, name, len)) { | |
3895 | readline_add_completion(rs, name); | |
3896 | } | |
3897 | } | |
3898 | } | |
3899 | } | |
3900 | ||
3901 | static void vm_completion(ReadLineState *rs, const char *str) | |
3902 | { | |
3903 | size_t len; | |
3904 | BlockDriverState *bs; | |
3905 | BdrvNextIterator it; | |
3906 | ||
3907 | len = strlen(str); | |
3908 | readline_set_completion_index(rs, len); | |
3909 | ||
3910 | for (bs = bdrv_first(&it); bs; bs = bdrv_next(&it)) { | |
3911 | SnapshotInfoList *snapshots, *snapshot; | |
3912 | AioContext *ctx = bdrv_get_aio_context(bs); | |
3913 | bool ok = false; | |
3914 | ||
3915 | aio_context_acquire(ctx); | |
3916 | if (bdrv_can_snapshot(bs)) { | |
3917 | ok = bdrv_query_snapshot_info_list(bs, &snapshots, NULL) == 0; | |
3918 | } | |
3919 | aio_context_release(ctx); | |
3920 | if (!ok) { | |
3921 | continue; | |
3922 | } | |
3923 | ||
3924 | snapshot = snapshots; | |
3925 | while (snapshot) { | |
3926 | char *completion = snapshot->value->name; | |
3927 | if (!strncmp(str, completion, len)) { | |
3928 | readline_add_completion(rs, completion); | |
3929 | } | |
3930 | completion = snapshot->value->id; | |
3931 | if (!strncmp(str, completion, len)) { | |
3932 | readline_add_completion(rs, completion); | |
3933 | } | |
3934 | snapshot = snapshot->next; | |
3935 | } | |
3936 | qapi_free_SnapshotInfoList(snapshots); | |
3937 | } | |
3938 | ||
3939 | } | |
3940 | ||
3941 | void delvm_completion(ReadLineState *rs, int nb_args, const char *str) | |
3942 | { | |
3943 | if (nb_args == 2) { | |
3944 | vm_completion(rs, str); | |
3945 | } | |
3946 | } | |
3947 | ||
3948 | void loadvm_completion(ReadLineState *rs, int nb_args, const char *str) | |
3949 | { | |
3950 | if (nb_args == 2) { | |
3951 | vm_completion(rs, str); | |
3952 | } | |
3953 | } | |
3954 | ||
3955 | static void monitor_find_completion_by_table(Monitor *mon, | |
3956 | const mon_cmd_t *cmd_table, | |
3957 | char **args, | |
3958 | int nb_args) | |
3959 | { | |
3960 | const char *cmdname; | |
3961 | int i; | |
3962 | const char *ptype, *old_ptype, *str, *name; | |
3963 | const mon_cmd_t *cmd; | |
3964 | BlockBackend *blk = NULL; | |
3965 | ||
3966 | if (nb_args <= 1) { | |
3967 | /* command completion */ | |
3968 | if (nb_args == 0) | |
3969 | cmdname = ""; | |
3970 | else | |
3971 | cmdname = args[0]; | |
3972 | readline_set_completion_index(mon->rs, strlen(cmdname)); | |
3973 | for (cmd = cmd_table; cmd->name != NULL; cmd++) { | |
3974 | if (!runstate_check(RUN_STATE_PRECONFIG) || | |
3975 | cmd_can_preconfig(cmd)) { | |
3976 | cmd_completion(mon, cmdname, cmd->name); | |
3977 | } | |
3978 | } | |
3979 | } else { | |
3980 | /* find the command */ | |
3981 | for (cmd = cmd_table; cmd->name != NULL; cmd++) { | |
3982 | if (compare_cmd(args[0], cmd->name) && | |
3983 | (!runstate_check(RUN_STATE_PRECONFIG) || | |
3984 | cmd_can_preconfig(cmd))) { | |
3985 | break; | |
3986 | } | |
3987 | } | |
3988 | if (!cmd->name) { | |
3989 | return; | |
3990 | } | |
3991 | ||
3992 | if (cmd->sub_table) { | |
3993 | /* do the job again */ | |
3994 | monitor_find_completion_by_table(mon, cmd->sub_table, | |
3995 | &args[1], nb_args - 1); | |
3996 | return; | |
3997 | } | |
3998 | if (cmd->command_completion) { | |
3999 | cmd->command_completion(mon->rs, nb_args, args[nb_args - 1]); | |
4000 | return; | |
4001 | } | |
4002 | ||
4003 | ptype = next_arg_type(cmd->args_type); | |
4004 | for(i = 0; i < nb_args - 2; i++) { | |
4005 | if (*ptype != '\0') { | |
4006 | ptype = next_arg_type(ptype); | |
4007 | while (*ptype == '?') | |
4008 | ptype = next_arg_type(ptype); | |
4009 | } | |
4010 | } | |
4011 | str = args[nb_args - 1]; | |
4012 | old_ptype = NULL; | |
4013 | while (*ptype == '-' && old_ptype != ptype) { | |
4014 | old_ptype = ptype; | |
4015 | ptype = next_arg_type(ptype); | |
4016 | } | |
4017 | switch(*ptype) { | |
4018 | case 'F': | |
4019 | /* file completion */ | |
4020 | readline_set_completion_index(mon->rs, strlen(str)); | |
4021 | file_completion(mon, str); | |
4022 | break; | |
4023 | case 'B': | |
4024 | /* block device name completion */ | |
4025 | readline_set_completion_index(mon->rs, strlen(str)); | |
4026 | while ((blk = blk_next(blk)) != NULL) { | |
4027 | name = blk_name(blk); | |
4028 | if (str[0] == '\0' || | |
4029 | !strncmp(name, str, strlen(str))) { | |
4030 | readline_add_completion(mon->rs, name); | |
4031 | } | |
4032 | } | |
4033 | break; | |
4034 | case 's': | |
4035 | case 'S': | |
4036 | if (!strcmp(cmd->name, "help|?")) { | |
4037 | monitor_find_completion_by_table(mon, cmd_table, | |
4038 | &args[1], nb_args - 1); | |
4039 | } | |
4040 | break; | |
4041 | default: | |
4042 | break; | |
4043 | } | |
4044 | } | |
4045 | } | |
4046 | ||
4047 | static void monitor_find_completion(void *opaque, | |
4048 | const char *cmdline) | |
4049 | { | |
4050 | Monitor *mon = opaque; | |
4051 | char *args[MAX_ARGS]; | |
4052 | int nb_args, len; | |
4053 | ||
4054 | /* 1. parse the cmdline */ | |
4055 | if (parse_cmdline(cmdline, &nb_args, args) < 0) { | |
4056 | return; | |
4057 | } | |
4058 | ||
4059 | /* if the line ends with a space, it means we want to complete the | |
4060 | next arg */ | |
4061 | len = strlen(cmdline); | |
4062 | if (len > 0 && qemu_isspace(cmdline[len - 1])) { | |
4063 | if (nb_args >= MAX_ARGS) { | |
4064 | goto cleanup; | |
4065 | } | |
4066 | args[nb_args++] = g_strdup(""); | |
4067 | } | |
4068 | ||
4069 | /* 2. auto complete according to args */ | |
4070 | monitor_find_completion_by_table(mon, mon->cmd_table, args, nb_args); | |
4071 | ||
4072 | cleanup: | |
4073 | free_cmdline_args(args, nb_args); | |
4074 | } | |
4075 | ||
4076 | static int monitor_can_read(void *opaque) | |
4077 | { | |
4078 | Monitor *mon = opaque; | |
4079 | ||
4080 | return !atomic_mb_read(&mon->suspend_cnt); | |
4081 | } | |
4082 | ||
4083 | /* | |
4084 | * Emit QMP response @rsp with ID @id to @mon. | |
4085 | * Null @rsp can only happen for commands with QCO_NO_SUCCESS_RESP. | |
4086 | * Nothing is emitted then. | |
4087 | */ | |
4088 | static void monitor_qmp_respond(Monitor *mon, QDict *rsp, QObject *id) | |
4089 | { | |
4090 | if (rsp) { | |
4091 | if (id) { | |
4092 | qdict_put_obj(rsp, "id", qobject_ref(id)); | |
4093 | } | |
4094 | ||
4095 | qmp_send_response(mon, rsp); | |
4096 | } | |
4097 | } | |
4098 | ||
4099 | static void monitor_qmp_dispatch(Monitor *mon, QObject *req, QObject *id) | |
4100 | { | |
4101 | Monitor *old_mon; | |
4102 | QDict *rsp; | |
4103 | QDict *error; | |
4104 | ||
4105 | old_mon = cur_mon; | |
4106 | cur_mon = mon; | |
4107 | ||
4108 | rsp = qmp_dispatch(mon->qmp.commands, req, qmp_oob_enabled(mon)); | |
4109 | ||
4110 | cur_mon = old_mon; | |
4111 | ||
4112 | if (mon->qmp.commands == &qmp_cap_negotiation_commands) { | |
4113 | error = qdict_get_qdict(rsp, "error"); | |
4114 | if (error | |
4115 | && !g_strcmp0(qdict_get_try_str(error, "class"), | |
4116 | QapiErrorClass_str(ERROR_CLASS_COMMAND_NOT_FOUND))) { | |
4117 | /* Provide a more useful error message */ | |
4118 | qdict_del(error, "desc"); | |
4119 | qdict_put_str(error, "desc", "Expecting capabilities negotiation" | |
4120 | " with 'qmp_capabilities'"); | |
4121 | } | |
4122 | } | |
4123 | ||
4124 | monitor_qmp_respond(mon, rsp, id); | |
4125 | qobject_unref(rsp); | |
4126 | } | |
4127 | ||
4128 | /* | |
4129 | * Pop a QMP request from a monitor request queue. | |
4130 | * Return the request, or NULL all request queues are empty. | |
4131 | * We are using round-robin fashion to pop the request, to avoid | |
4132 | * processing commands only on a very busy monitor. To achieve that, | |
4133 | * when we process one request on a specific monitor, we put that | |
4134 | * monitor to the end of mon_list queue. | |
4135 | * | |
4136 | * Note: if the function returned with non-NULL, then the caller will | |
4137 | * be with mon->qmp.qmp_queue_lock held, and the caller is responsible | |
4138 | * to release it. | |
4139 | */ | |
4140 | static QMPRequest *monitor_qmp_requests_pop_any_with_lock(void) | |
4141 | { | |
4142 | QMPRequest *req_obj = NULL; | |
4143 | Monitor *mon; | |
4144 | ||
4145 | qemu_mutex_lock(&monitor_lock); | |
4146 | ||
4147 | QTAILQ_FOREACH(mon, &mon_list, entry) { | |
4148 | qemu_mutex_lock(&mon->qmp.qmp_queue_lock); | |
4149 | req_obj = g_queue_pop_head(mon->qmp.qmp_requests); | |
4150 | if (req_obj) { | |
4151 | /* With the lock of corresponding queue held */ | |
4152 | break; | |
4153 | } | |
4154 | qemu_mutex_unlock(&mon->qmp.qmp_queue_lock); | |
4155 | } | |
4156 | ||
4157 | if (req_obj) { | |
4158 | /* | |
4159 | * We found one request on the monitor. Degrade this monitor's | |
4160 | * priority to lowest by re-inserting it to end of queue. | |
4161 | */ | |
4162 | QTAILQ_REMOVE(&mon_list, mon, entry); | |
4163 | QTAILQ_INSERT_TAIL(&mon_list, mon, entry); | |
4164 | } | |
4165 | ||
4166 | qemu_mutex_unlock(&monitor_lock); | |
4167 | ||
4168 | return req_obj; | |
4169 | } | |
4170 | ||
4171 | static void monitor_qmp_bh_dispatcher(void *data) | |
4172 | { | |
4173 | QMPRequest *req_obj = monitor_qmp_requests_pop_any_with_lock(); | |
4174 | QDict *rsp; | |
4175 | bool need_resume; | |
4176 | Monitor *mon; | |
4177 | ||
4178 | if (!req_obj) { | |
4179 | return; | |
4180 | } | |
4181 | ||
4182 | mon = req_obj->mon; | |
4183 | /* qmp_oob_enabled() might change after "qmp_capabilities" */ | |
4184 | need_resume = !qmp_oob_enabled(mon) || | |
4185 | mon->qmp.qmp_requests->length == QMP_REQ_QUEUE_LEN_MAX - 1; | |
4186 | qemu_mutex_unlock(&mon->qmp.qmp_queue_lock); | |
4187 | if (req_obj->req) { | |
4188 | trace_monitor_qmp_cmd_in_band(qobject_get_try_str(req_obj->id) ?: ""); | |
4189 | monitor_qmp_dispatch(mon, req_obj->req, req_obj->id); | |
4190 | } else { | |
4191 | assert(req_obj->err); | |
4192 | rsp = qmp_error_response(req_obj->err); | |
4193 | req_obj->err = NULL; | |
4194 | monitor_qmp_respond(mon, rsp, NULL); | |
4195 | qobject_unref(rsp); | |
4196 | } | |
4197 | ||
4198 | if (need_resume) { | |
4199 | /* Pairs with the monitor_suspend() in handle_qmp_command() */ | |
4200 | monitor_resume(mon); | |
4201 | } | |
4202 | qmp_request_free(req_obj); | |
4203 | ||
4204 | /* Reschedule instead of looping so the main loop stays responsive */ | |
4205 | qemu_bh_schedule(qmp_dispatcher_bh); | |
4206 | } | |
4207 | ||
4208 | static void handle_qmp_command(void *opaque, QObject *req, Error *err) | |
4209 | { | |
4210 | Monitor *mon = opaque; | |
4211 | QObject *id = NULL; | |
4212 | QDict *qdict; | |
4213 | QMPRequest *req_obj; | |
4214 | ||
4215 | assert(!req != !err); | |
4216 | ||
4217 | qdict = qobject_to(QDict, req); | |
4218 | if (qdict) { | |
4219 | id = qobject_ref(qdict_get(qdict, "id")); | |
4220 | qdict_del(qdict, "id"); | |
4221 | } /* else will fail qmp_dispatch() */ | |
4222 | ||
4223 | if (req && trace_event_get_state_backends(TRACE_HANDLE_QMP_COMMAND)) { | |
4224 | QString *req_json = qobject_to_json(req); | |
4225 | trace_handle_qmp_command(mon, qstring_get_str(req_json)); | |
4226 | qobject_unref(req_json); | |
4227 | } | |
4228 | ||
4229 | if (qdict && qmp_is_oob(qdict)) { | |
4230 | /* OOB commands are executed immediately */ | |
4231 | trace_monitor_qmp_cmd_out_of_band(qobject_get_try_str(id) | |
4232 | ?: ""); | |
4233 | monitor_qmp_dispatch(mon, req, id); | |
4234 | qobject_unref(req); | |
4235 | qobject_unref(id); | |
4236 | return; | |
4237 | } | |
4238 | ||
4239 | req_obj = g_new0(QMPRequest, 1); | |
4240 | req_obj->mon = mon; | |
4241 | req_obj->id = id; | |
4242 | req_obj->req = req; | |
4243 | req_obj->err = err; | |
4244 | ||
4245 | /* Protect qmp_requests and fetching its length. */ | |
4246 | qemu_mutex_lock(&mon->qmp.qmp_queue_lock); | |
4247 | ||
4248 | /* | |
4249 | * Suspend the monitor when we can't queue more requests after | |
4250 | * this one. Dequeuing in monitor_qmp_bh_dispatcher() will resume | |
4251 | * it. Note that when OOB is disabled, we queue at most one | |
4252 | * command, for backward compatibility. | |
4253 | */ | |
4254 | if (!qmp_oob_enabled(mon) || | |
4255 | mon->qmp.qmp_requests->length == QMP_REQ_QUEUE_LEN_MAX - 1) { | |
4256 | monitor_suspend(mon); | |
4257 | } | |
4258 | ||
4259 | /* | |
4260 | * Put the request to the end of queue so that requests will be | |
4261 | * handled in time order. Ownership for req_obj, req, id, | |
4262 | * etc. will be delivered to the handler side. | |
4263 | */ | |
4264 | assert(mon->qmp.qmp_requests->length < QMP_REQ_QUEUE_LEN_MAX); | |
4265 | g_queue_push_tail(mon->qmp.qmp_requests, req_obj); | |
4266 | qemu_mutex_unlock(&mon->qmp.qmp_queue_lock); | |
4267 | ||
4268 | /* Kick the dispatcher routine */ | |
4269 | qemu_bh_schedule(qmp_dispatcher_bh); | |
4270 | } | |
4271 | ||
4272 | static void monitor_qmp_read(void *opaque, const uint8_t *buf, int size) | |
4273 | { | |
4274 | Monitor *mon = opaque; | |
4275 | ||
4276 | json_message_parser_feed(&mon->qmp.parser, (const char *) buf, size); | |
4277 | } | |
4278 | ||
4279 | static void monitor_read(void *opaque, const uint8_t *buf, int size) | |
4280 | { | |
4281 | Monitor *old_mon = cur_mon; | |
4282 | int i; | |
4283 | ||
4284 | cur_mon = opaque; | |
4285 | ||
4286 | if (cur_mon->rs) { | |
4287 | for (i = 0; i < size; i++) | |
4288 | readline_handle_byte(cur_mon->rs, buf[i]); | |
4289 | } else { | |
4290 | if (size == 0 || buf[size - 1] != 0) | |
4291 | monitor_printf(cur_mon, "corrupted command\n"); | |
4292 | else | |
4293 | handle_hmp_command(cur_mon, (char *)buf); | |
4294 | } | |
4295 | ||
4296 | cur_mon = old_mon; | |
4297 | } | |
4298 | ||
4299 | static void monitor_command_cb(void *opaque, const char *cmdline, | |
4300 | void *readline_opaque) | |
4301 | { | |
4302 | Monitor *mon = opaque; | |
4303 | ||
4304 | monitor_suspend(mon); | |
4305 | handle_hmp_command(mon, cmdline); | |
4306 | monitor_resume(mon); | |
4307 | } | |
4308 | ||
4309 | int monitor_suspend(Monitor *mon) | |
4310 | { | |
4311 | if (monitor_is_hmp_non_interactive(mon)) { | |
4312 | return -ENOTTY; | |
4313 | } | |
4314 | ||
4315 | atomic_inc(&mon->suspend_cnt); | |
4316 | ||
4317 | if (mon->use_io_thread) { | |
4318 | /* | |
4319 | * Kick I/O thread to make sure this takes effect. It'll be | |
4320 | * evaluated again in prepare() of the watch object. | |
4321 | */ | |
4322 | aio_notify(iothread_get_aio_context(mon_iothread)); | |
4323 | } | |
4324 | ||
4325 | trace_monitor_suspend(mon, 1); | |
4326 | return 0; | |
4327 | } | |
4328 | ||
4329 | static void monitor_accept_input(void *opaque) | |
4330 | { | |
4331 | Monitor *mon = opaque; | |
4332 | ||
4333 | qemu_chr_fe_accept_input(&mon->chr); | |
4334 | } | |
4335 | ||
4336 | void monitor_resume(Monitor *mon) | |
4337 | { | |
4338 | if (monitor_is_hmp_non_interactive(mon)) { | |
4339 | return; | |
4340 | } | |
4341 | ||
4342 | if (atomic_dec_fetch(&mon->suspend_cnt) == 0) { | |
4343 | AioContext *ctx; | |
4344 | ||
4345 | if (mon->use_io_thread) { | |
4346 | ctx = iothread_get_aio_context(mon_iothread); | |
4347 | } else { | |
4348 | ctx = qemu_get_aio_context(); | |
4349 | } | |
4350 | ||
4351 | if (!monitor_is_qmp(mon)) { | |
4352 | assert(mon->rs); | |
4353 | readline_show_prompt(mon->rs); | |
4354 | } | |
4355 | ||
4356 | aio_bh_schedule_oneshot(ctx, monitor_accept_input, mon); | |
4357 | } | |
4358 | ||
4359 | trace_monitor_suspend(mon, -1); | |
4360 | } | |
4361 | ||
4362 | static QDict *qmp_greeting(Monitor *mon) | |
4363 | { | |
4364 | QList *cap_list = qlist_new(); | |
4365 | QObject *ver = NULL; | |
4366 | QMPCapability cap; | |
4367 | ||
4368 | qmp_marshal_query_version(NULL, &ver, NULL); | |
4369 | ||
4370 | for (cap = 0; cap < QMP_CAPABILITY__MAX; cap++) { | |
4371 | if (mon->qmp.capab_offered[cap]) { | |
4372 | qlist_append_str(cap_list, QMPCapability_str(cap)); | |
4373 | } | |
4374 | } | |
4375 | ||
4376 | return qdict_from_jsonf_nofail( | |
4377 | "{'QMP': {'version': %p, 'capabilities': %p}}", | |
4378 | ver, cap_list); | |
4379 | } | |
4380 | ||
4381 | static void monitor_qmp_event(void *opaque, int event) | |
4382 | { | |
4383 | QDict *data; | |
4384 | Monitor *mon = opaque; | |
4385 | ||
4386 | switch (event) { | |
4387 | case CHR_EVENT_OPENED: | |
4388 | mon->qmp.commands = &qmp_cap_negotiation_commands; | |
4389 | monitor_qmp_caps_reset(mon); | |
4390 | data = qmp_greeting(mon); | |
4391 | qmp_send_response(mon, data); | |
4392 | qobject_unref(data); | |
4393 | mon_refcount++; | |
4394 | break; | |
4395 | case CHR_EVENT_CLOSED: | |
4396 | /* | |
4397 | * Note: this is only useful when the output of the chardev | |
4398 | * backend is still open. For example, when the backend is | |
4399 | * stdio, it's possible that stdout is still open when stdin | |
4400 | * is closed. | |
4401 | */ | |
4402 | monitor_qmp_cleanup_queues(mon); | |
4403 | json_message_parser_destroy(&mon->qmp.parser); | |
4404 | json_message_parser_init(&mon->qmp.parser, handle_qmp_command, | |
4405 | mon, NULL); | |
4406 | mon_refcount--; | |
4407 | monitor_fdsets_cleanup(); | |
4408 | break; | |
4409 | } | |
4410 | } | |
4411 | ||
4412 | static void monitor_event(void *opaque, int event) | |
4413 | { | |
4414 | Monitor *mon = opaque; | |
4415 | ||
4416 | switch (event) { | |
4417 | case CHR_EVENT_MUX_IN: | |
4418 | qemu_mutex_lock(&mon->mon_lock); | |
4419 | mon->mux_out = 0; | |
4420 | qemu_mutex_unlock(&mon->mon_lock); | |
4421 | if (mon->reset_seen) { | |
4422 | readline_restart(mon->rs); | |
4423 | monitor_resume(mon); | |
4424 | monitor_flush(mon); | |
4425 | } else { | |
4426 | atomic_mb_set(&mon->suspend_cnt, 0); | |
4427 | } | |
4428 | break; | |
4429 | ||
4430 | case CHR_EVENT_MUX_OUT: | |
4431 | if (mon->reset_seen) { | |
4432 | if (atomic_mb_read(&mon->suspend_cnt) == 0) { | |
4433 | monitor_printf(mon, "\n"); | |
4434 | } | |
4435 | monitor_flush(mon); | |
4436 | monitor_suspend(mon); | |
4437 | } else { | |
4438 | atomic_inc(&mon->suspend_cnt); | |
4439 | } | |
4440 | qemu_mutex_lock(&mon->mon_lock); | |
4441 | mon->mux_out = 1; | |
4442 | qemu_mutex_unlock(&mon->mon_lock); | |
4443 | break; | |
4444 | ||
4445 | case CHR_EVENT_OPENED: | |
4446 | monitor_printf(mon, "QEMU %s monitor - type 'help' for more " | |
4447 | "information\n", QEMU_VERSION); | |
4448 | if (!mon->mux_out) { | |
4449 | readline_restart(mon->rs); | |
4450 | readline_show_prompt(mon->rs); | |
4451 | } | |
4452 | mon->reset_seen = 1; | |
4453 | mon_refcount++; | |
4454 | break; | |
4455 | ||
4456 | case CHR_EVENT_CLOSED: | |
4457 | mon_refcount--; | |
4458 | monitor_fdsets_cleanup(); | |
4459 | break; | |
4460 | } | |
4461 | } | |
4462 | ||
4463 | static int | |
4464 | compare_mon_cmd(const void *a, const void *b) | |
4465 | { | |
4466 | return strcmp(((const mon_cmd_t *)a)->name, | |
4467 | ((const mon_cmd_t *)b)->name); | |
4468 | } | |
4469 | ||
4470 | static void sortcmdlist(void) | |
4471 | { | |
4472 | int array_num; | |
4473 | int elem_size = sizeof(mon_cmd_t); | |
4474 | ||
4475 | array_num = sizeof(mon_cmds)/elem_size-1; | |
4476 | qsort((void *)mon_cmds, array_num, elem_size, compare_mon_cmd); | |
4477 | ||
4478 | array_num = sizeof(info_cmds)/elem_size-1; | |
4479 | qsort((void *)info_cmds, array_num, elem_size, compare_mon_cmd); | |
4480 | } | |
4481 | ||
4482 | static void monitor_iothread_init(void) | |
4483 | { | |
4484 | mon_iothread = iothread_create("mon_iothread", &error_abort); | |
4485 | } | |
4486 | ||
4487 | void monitor_init_globals(void) | |
4488 | { | |
4489 | monitor_init_qmp_commands(); | |
4490 | monitor_qapi_event_init(); | |
4491 | sortcmdlist(); | |
4492 | qemu_mutex_init(&monitor_lock); | |
4493 | qemu_mutex_init(&mon_fdsets_lock); | |
4494 | ||
4495 | /* | |
4496 | * The dispatcher BH must run in the main loop thread, since we | |
4497 | * have commands assuming that context. It would be nice to get | |
4498 | * rid of those assumptions. | |
4499 | */ | |
4500 | qmp_dispatcher_bh = aio_bh_new(iohandler_get_aio_context(), | |
4501 | monitor_qmp_bh_dispatcher, | |
4502 | NULL); | |
4503 | } | |
4504 | ||
4505 | /* These functions just adapt the readline interface in a typesafe way. We | |
4506 | * could cast function pointers but that discards compiler checks. | |
4507 | */ | |
4508 | static void GCC_FMT_ATTR(2, 3) monitor_readline_printf(void *opaque, | |
4509 | const char *fmt, ...) | |
4510 | { | |
4511 | va_list ap; | |
4512 | va_start(ap, fmt); | |
4513 | monitor_vprintf(opaque, fmt, ap); | |
4514 | va_end(ap); | |
4515 | } | |
4516 | ||
4517 | static void monitor_readline_flush(void *opaque) | |
4518 | { | |
4519 | monitor_flush(opaque); | |
4520 | } | |
4521 | ||
4522 | /* | |
4523 | * Print to current monitor if we have one, else to stream. | |
4524 | * TODO should return int, so callers can calculate width, but that | |
4525 | * requires surgery to monitor_vprintf(). Left for another day. | |
4526 | */ | |
4527 | void monitor_vfprintf(FILE *stream, const char *fmt, va_list ap) | |
4528 | { | |
4529 | if (cur_mon && !monitor_cur_is_qmp()) { | |
4530 | monitor_vprintf(cur_mon, fmt, ap); | |
4531 | } else { | |
4532 | vfprintf(stream, fmt, ap); | |
4533 | } | |
4534 | } | |
4535 | ||
4536 | /* | |
4537 | * Print to current monitor if we have one, else to stderr. | |
4538 | * TODO should return int, so callers can calculate width, but that | |
4539 | * requires surgery to monitor_vprintf(). Left for another day. | |
4540 | */ | |
4541 | void error_vprintf(const char *fmt, va_list ap) | |
4542 | { | |
4543 | monitor_vfprintf(stderr, fmt, ap); | |
4544 | } | |
4545 | ||
4546 | void error_vprintf_unless_qmp(const char *fmt, va_list ap) | |
4547 | { | |
4548 | if (cur_mon && !monitor_cur_is_qmp()) { | |
4549 | monitor_vprintf(cur_mon, fmt, ap); | |
4550 | } else if (!cur_mon) { | |
4551 | vfprintf(stderr, fmt, ap); | |
4552 | } | |
4553 | } | |
4554 | ||
4555 | static void monitor_list_append(Monitor *mon) | |
4556 | { | |
4557 | qemu_mutex_lock(&monitor_lock); | |
4558 | /* | |
4559 | * This prevents inserting new monitors during monitor_cleanup(). | |
4560 | * A cleaner solution would involve the main thread telling other | |
4561 | * threads to terminate, waiting for their termination. | |
4562 | */ | |
4563 | if (!monitor_destroyed) { | |
4564 | QTAILQ_INSERT_HEAD(&mon_list, mon, entry); | |
4565 | mon = NULL; | |
4566 | } | |
4567 | qemu_mutex_unlock(&monitor_lock); | |
4568 | ||
4569 | if (mon) { | |
4570 | monitor_data_destroy(mon); | |
4571 | g_free(mon); | |
4572 | } | |
4573 | } | |
4574 | ||
4575 | static void monitor_qmp_setup_handlers_bh(void *opaque) | |
4576 | { | |
4577 | Monitor *mon = opaque; | |
4578 | GMainContext *context; | |
4579 | ||
4580 | assert(mon->use_io_thread); | |
4581 | context = iothread_get_g_main_context(mon_iothread); | |
4582 | assert(context); | |
4583 | qemu_chr_fe_set_handlers(&mon->chr, monitor_can_read, monitor_qmp_read, | |
4584 | monitor_qmp_event, NULL, mon, context, true); | |
4585 | monitor_list_append(mon); | |
4586 | } | |
4587 | ||
4588 | void monitor_init(Chardev *chr, int flags) | |
4589 | { | |
4590 | Monitor *mon = g_malloc(sizeof(*mon)); | |
4591 | bool use_readline = flags & MONITOR_USE_READLINE; | |
4592 | ||
4593 | /* Note: we run QMP monitor in I/O thread when @chr supports that */ | |
4594 | monitor_data_init(mon, false, | |
4595 | (flags & MONITOR_USE_CONTROL) | |
4596 | && qemu_chr_has_feature(chr, | |
4597 | QEMU_CHAR_FEATURE_GCONTEXT)); | |
4598 | ||
4599 | qemu_chr_fe_init(&mon->chr, chr, &error_abort); | |
4600 | mon->flags = flags; | |
4601 | if (use_readline) { | |
4602 | mon->rs = readline_init(monitor_readline_printf, | |
4603 | monitor_readline_flush, | |
4604 | mon, | |
4605 | monitor_find_completion); | |
4606 | monitor_read_command(mon, 0); | |
4607 | } | |
4608 | ||
4609 | if (monitor_is_qmp(mon)) { | |
4610 | qemu_chr_fe_set_echo(&mon->chr, true); | |
4611 | json_message_parser_init(&mon->qmp.parser, handle_qmp_command, | |
4612 | mon, NULL); | |
4613 | if (mon->use_io_thread) { | |
4614 | /* | |
4615 | * Make sure the old iowatch is gone. It's possible when | |
4616 | * e.g. the chardev is in client mode, with wait=on. | |
4617 | */ | |
4618 | remove_fd_in_watch(chr); | |
4619 | /* | |
4620 | * We can't call qemu_chr_fe_set_handlers() directly here | |
4621 | * since chardev might be running in the monitor I/O | |
4622 | * thread. Schedule a bottom half. | |
4623 | */ | |
4624 | aio_bh_schedule_oneshot(iothread_get_aio_context(mon_iothread), | |
4625 | monitor_qmp_setup_handlers_bh, mon); | |
4626 | /* The bottom half will add @mon to @mon_list */ | |
4627 | return; | |
4628 | } else { | |
4629 | qemu_chr_fe_set_handlers(&mon->chr, monitor_can_read, | |
4630 | monitor_qmp_read, monitor_qmp_event, | |
4631 | NULL, mon, NULL, true); | |
4632 | } | |
4633 | } else { | |
4634 | qemu_chr_fe_set_handlers(&mon->chr, monitor_can_read, monitor_read, | |
4635 | monitor_event, NULL, mon, NULL, true); | |
4636 | } | |
4637 | ||
4638 | monitor_list_append(mon); | |
4639 | } | |
4640 | ||
4641 | void monitor_cleanup(void) | |
4642 | { | |
4643 | /* | |
4644 | * We need to explicitly stop the I/O thread (but not destroy it), | |
4645 | * clean up the monitor resources, then destroy the I/O thread since | |
4646 | * we need to unregister from chardev below in | |
4647 | * monitor_data_destroy(), and chardev is not thread-safe yet | |
4648 | */ | |
4649 | if (mon_iothread) { | |
4650 | iothread_stop(mon_iothread); | |
4651 | } | |
4652 | ||
4653 | /* Flush output buffers and destroy monitors */ | |
4654 | qemu_mutex_lock(&monitor_lock); | |
4655 | monitor_destroyed = true; | |
4656 | while (!QTAILQ_EMPTY(&mon_list)) { | |
4657 | Monitor *mon = QTAILQ_FIRST(&mon_list); | |
4658 | QTAILQ_REMOVE(&mon_list, mon, entry); | |
4659 | /* Permit QAPI event emission from character frontend release */ | |
4660 | qemu_mutex_unlock(&monitor_lock); | |
4661 | monitor_flush(mon); | |
4662 | monitor_data_destroy(mon); | |
4663 | qemu_mutex_lock(&monitor_lock); | |
4664 | g_free(mon); | |
4665 | } | |
4666 | qemu_mutex_unlock(&monitor_lock); | |
4667 | ||
4668 | /* QEMUBHs needs to be deleted before destroying the I/O thread */ | |
4669 | qemu_bh_delete(qmp_dispatcher_bh); | |
4670 | qmp_dispatcher_bh = NULL; | |
4671 | if (mon_iothread) { | |
4672 | iothread_destroy(mon_iothread); | |
4673 | mon_iothread = NULL; | |
4674 | } | |
4675 | } | |
4676 | ||
4677 | QemuOptsList qemu_mon_opts = { | |
4678 | .name = "mon", | |
4679 | .implied_opt_name = "chardev", | |
4680 | .head = QTAILQ_HEAD_INITIALIZER(qemu_mon_opts.head), | |
4681 | .desc = { | |
4682 | { | |
4683 | .name = "mode", | |
4684 | .type = QEMU_OPT_STRING, | |
4685 | },{ | |
4686 | .name = "chardev", | |
4687 | .type = QEMU_OPT_STRING, | |
4688 | },{ | |
4689 | .name = "pretty", | |
4690 | .type = QEMU_OPT_BOOL, | |
4691 | }, | |
4692 | { /* end of list */ } | |
4693 | }, | |
4694 | }; | |
4695 | ||
4696 | HotpluggableCPUList *qmp_query_hotpluggable_cpus(Error **errp) | |
4697 | { | |
4698 | MachineState *ms = MACHINE(qdev_get_machine()); | |
4699 | MachineClass *mc = MACHINE_GET_CLASS(ms); | |
4700 | ||
4701 | if (!mc->has_hotpluggable_cpus) { | |
4702 | error_setg(errp, QERR_FEATURE_DISABLED, "query-hotpluggable-cpus"); | |
4703 | return NULL; | |
4704 | } | |
4705 | ||
4706 | return machine_query_hotpluggable_cpus(ms); | |
4707 | } |