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COLO-compare: Optimize compare_common and compare_tcp
[qemu/kevin.git] / monitor.c
blobb68944d93c95648d90c52ec4973d7cfa6e7d7b1b
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 #include "qemu/osdep.h"
25 #include <dirent.h>
26 #include "qemu-common.h"
27 #include "cpu.h"
28 #include "hw/hw.h"
29 #include "monitor/qdev.h"
30 #include "hw/usb.h"
31 #include "hw/i386/pc.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 "sysemu/char.h"
39 #include "ui/qemu-spice.h"
40 #include "sysemu/sysemu.h"
41 #include "sysemu/numa.h"
42 #include "monitor/monitor.h"
43 #include "qemu/config-file.h"
44 #include "qemu/readline.h"
45 #include "ui/console.h"
46 #include "ui/input.h"
47 #include "sysemu/blockdev.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 "migration/migration.h"
54 #include "sysemu/hw_accel.h"
55 #include "qemu/acl.h"
56 #include "sysemu/tpm.h"
57 #include "qapi/qmp/qerror.h"
58 #include "qapi/qmp/types.h"
59 #include "qapi/qmp/qjson.h"
60 #include "qapi/qmp/json-streamer.h"
61 #include "qapi/qmp/json-parser.h"
62 #include "qom/object_interfaces.h"
63 #include "trace-root.h"
64 #include "trace/control.h"
65 #include "monitor/hmp-target.h"
66 #ifdef CONFIG_TRACE_SIMPLE
67 #include "trace/simple.h"
68 #endif
69 #include "exec/memory.h"
70 #include "exec/exec-all.h"
71 #include "qemu/log.h"
72 #include "qmp-commands.h"
73 #include "hmp.h"
74 #include "qemu/thread.h"
75 #include "block/qapi.h"
76 #include "qapi/qmp-event.h"
77 #include "qapi-event.h"
78 #include "qmp-introspect.h"
79 #include "sysemu/qtest.h"
80 #include "qemu/cutils.h"
81 #include "qapi/qmp/dispatch.h"
82
83 #if defined(TARGET_S390X)
84 #include "hw/s390x/storage-keys.h"
85 #endif
86
87 /*
88 * Supported types:
89 *
90 * 'F' filename
91 * 'B' block device name
92 * 's' string (accept optional quote)
93 * 'S' it just appends the rest of the string (accept optional quote)
94 * 'O' option string of the form NAME=VALUE,...
95 * parsed according to QemuOptsList given by its name
96 * Example: 'device:O' uses qemu_device_opts.
97 * Restriction: only lists with empty desc are supported
98 * TODO lift the restriction
99 * 'i' 32 bit integer
100 * 'l' target long (32 or 64 bit)
101 * 'M' Non-negative target long (32 or 64 bit), in user mode the
102 * value is multiplied by 2^20 (think Mebibyte)
103 * 'o' octets (aka bytes)
104 * user mode accepts an optional E, e, P, p, T, t, G, g, M, m,
105 * K, k suffix, which multiplies the value by 2^60 for suffixes E
106 * and e, 2^50 for suffixes P and p, 2^40 for suffixes T and t,
107 * 2^30 for suffixes G and g, 2^20 for M and m, 2^10 for K and k
108 * 'T' double
109 * user mode accepts an optional ms, us, ns suffix,
110 * which divides the value by 1e3, 1e6, 1e9, respectively
111 * '/' optional gdb-like print format (like "/10x")
112 *
113 * '?' optional type (for all types, except '/')
114 * '.' other form of optional type (for 'i' and 'l')
115 * 'b' boolean
116 * user mode accepts "on" or "off"
117 * '-' optional parameter (eg. '-f')
118 *
119 */
120
121 typedef struct mon_cmd_t {
122 const char *name;
123 const char *args_type;
124 const char *params;
125 const char *help;
126 void (*cmd)(Monitor *mon, const QDict *qdict);
127 /* @sub_table is a list of 2nd level of commands. If it does not exist,
128 * cmd should be used. If it exists, sub_table[?].cmd should be
129 * used, and cmd of 1st level plays the role of help function.
130 */
131 struct mon_cmd_t *sub_table;
132 void (*command_completion)(ReadLineState *rs, int nb_args, const char *str);
133 } mon_cmd_t;
134
135 /* file descriptors passed via SCM_RIGHTS */
136 typedef struct mon_fd_t mon_fd_t;
137 struct mon_fd_t {
138 char *name;
139 int fd;
140 QLIST_ENTRY(mon_fd_t) next;
141 };
142
143 /* file descriptor associated with a file descriptor set */
144 typedef struct MonFdsetFd MonFdsetFd;
145 struct MonFdsetFd {
146 int fd;
147 bool removed;
148 char *opaque;
149 QLIST_ENTRY(MonFdsetFd) next;
150 };
151
152 /* file descriptor set containing fds passed via SCM_RIGHTS */
153 typedef struct MonFdset MonFdset;
154 struct MonFdset {
155 int64_t id;
156 QLIST_HEAD(, MonFdsetFd) fds;
157 QLIST_HEAD(, MonFdsetFd) dup_fds;
158 QLIST_ENTRY(MonFdset) next;
159 };
160
161 typedef struct {
162 JSONMessageParser parser;
163 /*
164 * When a client connects, we're in capabilities negotiation mode.
165 * When command qmp_capabilities succeeds, we go into command
166 * mode.
167 */
168 bool in_command_mode; /* are we in command mode? */
169 } MonitorQMP;
170
171 /*
172 * To prevent flooding clients, events can be throttled. The
173 * throttling is calculated globally, rather than per-Monitor
174 * instance.
175 */
176 typedef struct MonitorQAPIEventState {
177 QAPIEvent event; /* Throttling state for this event type and... */
178 QDict *data; /* ... data, see qapi_event_throttle_equal() */
179 QEMUTimer *timer; /* Timer for handling delayed events */
180 QDict *qdict; /* Delayed event (if any) */
181 } MonitorQAPIEventState;
182
183 typedef struct {
184 int64_t rate; /* Minimum time (in ns) between two events */
185 } MonitorQAPIEventConf;
186
187 struct Monitor {
188 CharBackend chr;
189 int reset_seen;
190 int flags;
191 int suspend_cnt;
192 bool skip_flush;
193
194 QemuMutex out_lock;
195 QString *outbuf;
196 guint out_watch;
197
198 /* Read under either BQL or out_lock, written with BQL+out_lock. */
199 int mux_out;
200
201 ReadLineState *rs;
202 MonitorQMP qmp;
203 CPUState *mon_cpu;
204 BlockCompletionFunc *password_completion_cb;
205 void *password_opaque;
206 mon_cmd_t *cmd_table;
207 QLIST_HEAD(,mon_fd_t) fds;
208 QLIST_ENTRY(Monitor) entry;
209 };
210
211 /* QMP checker flags */
212 #define QMP_ACCEPT_UNKNOWNS 1
213
214 /* Protects mon_list, monitor_event_state. */
215 static QemuMutex monitor_lock;
216
217 static QLIST_HEAD(mon_list, Monitor) mon_list;
218 static QLIST_HEAD(mon_fdsets, MonFdset) mon_fdsets;
219 static int mon_refcount;
220
221 static mon_cmd_t mon_cmds[];
222 static mon_cmd_t info_cmds[];
223
224 Monitor *cur_mon;
225
226 static QEMUClockType event_clock_type = QEMU_CLOCK_REALTIME;
227
228 static void monitor_command_cb(void *opaque, const char *cmdline,
229 void *readline_opaque);
230
231 /**
232 * Is @mon a QMP monitor?
233 */
234 static inline bool monitor_is_qmp(const Monitor *mon)
235 {
236 return (mon->flags & MONITOR_USE_CONTROL);
237 }
238
239 /**
240 * Is the current monitor, if any, a QMP monitor?
241 */
242 bool monitor_cur_is_qmp(void)
243 {
244 return cur_mon && monitor_is_qmp(cur_mon);
245 }
246
247 void monitor_read_command(Monitor *mon, int show_prompt)
248 {
249 if (!mon->rs)
250 return;
251
252 readline_start(mon->rs, "(qemu) ", 0, monitor_command_cb, NULL);
253 if (show_prompt)
254 readline_show_prompt(mon->rs);
255 }
256
257 int monitor_read_password(Monitor *mon, ReadLineFunc *readline_func,
258 void *opaque)
259 {
260 if (mon->rs) {
261 readline_start(mon->rs, "Password: ", 1, readline_func, opaque);
262 /* prompt is printed on return from the command handler */
263 return 0;
264 } else {
265 monitor_printf(mon, "terminal does not support password prompting\n");
266 return -ENOTTY;
267 }
268 }
269
270 static void monitor_flush_locked(Monitor *mon);
271
272 static gboolean monitor_unblocked(GIOChannel *chan, GIOCondition cond,
273 void *opaque)
274 {
275 Monitor *mon = opaque;
276
277 qemu_mutex_lock(&mon->out_lock);
278 mon->out_watch = 0;
279 monitor_flush_locked(mon);
280 qemu_mutex_unlock(&mon->out_lock);
281 return FALSE;
282 }
283
284 /* Called with mon->out_lock held. */
285 static void monitor_flush_locked(Monitor *mon)
286 {
287 int rc;
288 size_t len;
289 const char *buf;
290
291 if (mon->skip_flush) {
292 return;
293 }
294
295 buf = qstring_get_str(mon->outbuf);
296 len = qstring_get_length(mon->outbuf);
297
298 if (len && !mon->mux_out) {
299 rc = qemu_chr_fe_write(&mon->chr, (const uint8_t *) buf, len);
300 if ((rc < 0 && errno != EAGAIN) || (rc == len)) {
301 /* all flushed or error */
302 QDECREF(mon->outbuf);
303 mon->outbuf = qstring_new();
304 return;
305 }
306 if (rc > 0) {
307 /* partial write */
308 QString *tmp = qstring_from_str(buf + rc);
309 QDECREF(mon->outbuf);
310 mon->outbuf = tmp;
311 }
312 if (mon->out_watch == 0) {
313 mon->out_watch =
314 qemu_chr_fe_add_watch(&mon->chr, G_IO_OUT | G_IO_HUP,
315 monitor_unblocked, mon);
316 }
317 }
318 }
319
320 void monitor_flush(Monitor *mon)
321 {
322 qemu_mutex_lock(&mon->out_lock);
323 monitor_flush_locked(mon);
324 qemu_mutex_unlock(&mon->out_lock);
325 }
326
327 /* flush at every end of line */
328 static void monitor_puts(Monitor *mon, const char *str)
329 {
330 char c;
331
332 qemu_mutex_lock(&mon->out_lock);
333 for(;;) {
334 c = *str++;
335 if (c == '\0')
336 break;
337 if (c == '\n') {
338 qstring_append_chr(mon->outbuf, '\r');
339 }
340 qstring_append_chr(mon->outbuf, c);
341 if (c == '\n') {
342 monitor_flush_locked(mon);
343 }
344 }
345 qemu_mutex_unlock(&mon->out_lock);
346 }
347
348 void monitor_vprintf(Monitor *mon, const char *fmt, va_list ap)
349 {
350 char *buf;
351
352 if (!mon)
353 return;
354
355 if (monitor_is_qmp(mon)) {
356 return;
357 }
358
359 buf = g_strdup_vprintf(fmt, ap);
360 monitor_puts(mon, buf);
361 g_free(buf);
362 }
363
364 void monitor_printf(Monitor *mon, const char *fmt, ...)
365 {
366 va_list ap;
367 va_start(ap, fmt);
368 monitor_vprintf(mon, fmt, ap);
369 va_end(ap);
370 }
371
372 int monitor_fprintf(FILE *stream, const char *fmt, ...)
373 {
374 va_list ap;
375 va_start(ap, fmt);
376 monitor_vprintf((Monitor *)stream, fmt, ap);
377 va_end(ap);
378 return 0;
379 }
380
381 static void monitor_json_emitter(Monitor *mon, const QObject *data)
382 {
383 QString *json;
384
385 json = mon->flags & MONITOR_USE_PRETTY ? qobject_to_json_pretty(data) :
386 qobject_to_json(data);
387 assert(json != NULL);
388
389 qstring_append_chr(json, '\n');
390 monitor_puts(mon, qstring_get_str(json));
391
392 QDECREF(json);
393 }
394
395 static MonitorQAPIEventConf monitor_qapi_event_conf[QAPI_EVENT__MAX] = {
396 /* Limit guest-triggerable events to 1 per second */
397 [QAPI_EVENT_RTC_CHANGE] = { 1000 * SCALE_MS },
398 [QAPI_EVENT_WATCHDOG] = { 1000 * SCALE_MS },
399 [QAPI_EVENT_BALLOON_CHANGE] = { 1000 * SCALE_MS },
400 [QAPI_EVENT_QUORUM_REPORT_BAD] = { 1000 * SCALE_MS },
401 [QAPI_EVENT_QUORUM_FAILURE] = { 1000 * SCALE_MS },
402 [QAPI_EVENT_VSERPORT_CHANGE] = { 1000 * SCALE_MS },
403 };
404
405 GHashTable *monitor_qapi_event_state;
406
407 /*
408 * Emits the event to every monitor instance, @event is only used for trace
409 * Called with monitor_lock held.
410 */
411 static void monitor_qapi_event_emit(QAPIEvent event, QDict *qdict)
412 {
413 Monitor *mon;
414
415 trace_monitor_protocol_event_emit(event, qdict);
416 QLIST_FOREACH(mon, &mon_list, entry) {
417 if (monitor_is_qmp(mon) && mon->qmp.in_command_mode) {
418 monitor_json_emitter(mon, QOBJECT(qdict));
419 }
420 }
421 }
422
423 static void monitor_qapi_event_handler(void *opaque);
424
425 /*
426 * Queue a new event for emission to Monitor instances,
427 * applying any rate limiting if required.
428 */
429 static void
430 monitor_qapi_event_queue(QAPIEvent event, QDict *qdict, Error **errp)
431 {
432 MonitorQAPIEventConf *evconf;
433 MonitorQAPIEventState *evstate;
434
435 assert(event < QAPI_EVENT__MAX);
436 evconf = &monitor_qapi_event_conf[event];
437 trace_monitor_protocol_event_queue(event, qdict, evconf->rate);
438
439 qemu_mutex_lock(&monitor_lock);
440
441 if (!evconf->rate) {
442 /* Unthrottled event */
443 monitor_qapi_event_emit(event, qdict);
444 } else {
445 QDict *data = qobject_to_qdict(qdict_get(qdict, "data"));
446 MonitorQAPIEventState key = { .event = event, .data = data };
447
448 evstate = g_hash_table_lookup(monitor_qapi_event_state, &key);
449 assert(!evstate || timer_pending(evstate->timer));
450
451 if (evstate) {
452 /*
453 * Timer is pending for (at least) evconf->rate ns after
454 * last send. Store event for sending when timer fires,
455 * replacing a prior stored event if any.
456 */
457 QDECREF(evstate->qdict);
458 evstate->qdict = qdict;
459 QINCREF(evstate->qdict);
460 } else {
461 /*
462 * Last send was (at least) evconf->rate ns ago.
463 * Send immediately, and arm the timer to call
464 * monitor_qapi_event_handler() in evconf->rate ns. Any
465 * events arriving before then will be delayed until then.
466 */
467 int64_t now = qemu_clock_get_ns(event_clock_type);
468
469 monitor_qapi_event_emit(event, qdict);
470
471 evstate = g_new(MonitorQAPIEventState, 1);
472 evstate->event = event;
473 evstate->data = data;
474 QINCREF(evstate->data);
475 evstate->qdict = NULL;
476 evstate->timer = timer_new_ns(event_clock_type,
477 monitor_qapi_event_handler,
478 evstate);
479 g_hash_table_add(monitor_qapi_event_state, evstate);
480 timer_mod_ns(evstate->timer, now + evconf->rate);
481 }
482 }
483
484 qemu_mutex_unlock(&monitor_lock);
485 }
486
487 /*
488 * This function runs evconf->rate ns after sending a throttled
489 * event.
490 * If another event has since been stored, send it.
491 */
492 static void monitor_qapi_event_handler(void *opaque)
493 {
494 MonitorQAPIEventState *evstate = opaque;
495 MonitorQAPIEventConf *evconf = &monitor_qapi_event_conf[evstate->event];
496
497 trace_monitor_protocol_event_handler(evstate->event, evstate->qdict);
498 qemu_mutex_lock(&monitor_lock);
499
500 if (evstate->qdict) {
501 int64_t now = qemu_clock_get_ns(event_clock_type);
502
503 monitor_qapi_event_emit(evstate->event, evstate->qdict);
504 QDECREF(evstate->qdict);
505 evstate->qdict = NULL;
506 timer_mod_ns(evstate->timer, now + evconf->rate);
507 } else {
508 g_hash_table_remove(monitor_qapi_event_state, evstate);
509 QDECREF(evstate->data);
510 timer_free(evstate->timer);
511 g_free(evstate);
512 }
513
514 qemu_mutex_unlock(&monitor_lock);
515 }
516
517 static unsigned int qapi_event_throttle_hash(const void *key)
518 {
519 const MonitorQAPIEventState *evstate = key;
520 unsigned int hash = evstate->event * 255;
521
522 if (evstate->event == QAPI_EVENT_VSERPORT_CHANGE) {
523 hash += g_str_hash(qdict_get_str(evstate->data, "id"));
524 }
525
526 if (evstate->event == QAPI_EVENT_QUORUM_REPORT_BAD) {
527 hash += g_str_hash(qdict_get_str(evstate->data, "node-name"));
528 }
529
530 return hash;
531 }
532
533 static gboolean qapi_event_throttle_equal(const void *a, const void *b)
534 {
535 const MonitorQAPIEventState *eva = a;
536 const MonitorQAPIEventState *evb = b;
537
538 if (eva->event != evb->event) {
539 return FALSE;
540 }
541
542 if (eva->event == QAPI_EVENT_VSERPORT_CHANGE) {
543 return !strcmp(qdict_get_str(eva->data, "id"),
544 qdict_get_str(evb->data, "id"));
545 }
546
547 if (eva->event == QAPI_EVENT_QUORUM_REPORT_BAD) {
548 return !strcmp(qdict_get_str(eva->data, "node-name"),
549 qdict_get_str(evb->data, "node-name"));
550 }
551
552 return TRUE;
553 }
554
555 static void monitor_qapi_event_init(void)
556 {
557 if (qtest_enabled()) {
558 event_clock_type = QEMU_CLOCK_VIRTUAL;
559 }
560
561 monitor_qapi_event_state = g_hash_table_new(qapi_event_throttle_hash,
562 qapi_event_throttle_equal);
563 qmp_event_set_func_emit(monitor_qapi_event_queue);
564 }
565
566 void qmp_qmp_capabilities(Error **errp)
567 {
568 cur_mon->qmp.in_command_mode = true;
569 }
570
571 static void handle_hmp_command(Monitor *mon, const char *cmdline);
572
573 static void monitor_data_init(Monitor *mon)
574 {
575 memset(mon, 0, sizeof(Monitor));
576 qemu_mutex_init(&mon->out_lock);
577 mon->outbuf = qstring_new();
578 /* Use *mon_cmds by default. */
579 mon->cmd_table = mon_cmds;
580 }
581
582 static void monitor_data_destroy(Monitor *mon)
583 {
584 qemu_chr_fe_deinit(&mon->chr);
585 if (monitor_is_qmp(mon)) {
586 json_message_parser_destroy(&mon->qmp.parser);
587 }
588 g_free(mon->rs);
589 QDECREF(mon->outbuf);
590 qemu_mutex_destroy(&mon->out_lock);
591 }
592
593 char *qmp_human_monitor_command(const char *command_line, bool has_cpu_index,
594 int64_t cpu_index, Error **errp)
595 {
596 char *output = NULL;
597 Monitor *old_mon, hmp;
598
599 monitor_data_init(&hmp);
600 hmp.skip_flush = true;
601
602 old_mon = cur_mon;
603 cur_mon = &hmp;
604
605 if (has_cpu_index) {
606 int ret = monitor_set_cpu(cpu_index);
607 if (ret < 0) {
608 cur_mon = old_mon;
609 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "cpu-index",
610 "a CPU number");
611 goto out;
612 }
613 }
614
615 handle_hmp_command(&hmp, command_line);
616 cur_mon = old_mon;
617
618 qemu_mutex_lock(&hmp.out_lock);
619 if (qstring_get_length(hmp.outbuf) > 0) {
620 output = g_strdup(qstring_get_str(hmp.outbuf));
621 } else {
622 output = g_strdup("");
623 }
624 qemu_mutex_unlock(&hmp.out_lock);
625
626 out:
627 monitor_data_destroy(&hmp);
628 return output;
629 }
630
631 static int compare_cmd(const char *name, const char *list)
632 {
633 const char *p, *pstart;
634 int len;
635 len = strlen(name);
636 p = list;
637 for(;;) {
638 pstart = p;
639 p = strchr(p, '|');
640 if (!p)
641 p = pstart + strlen(pstart);
642 if ((p - pstart) == len && !memcmp(pstart, name, len))
643 return 1;
644 if (*p == '\0')
645 break;
646 p++;
647 }
648 return 0;
649 }
650
651 static int get_str(char *buf, int buf_size, const char **pp)
652 {
653 const char *p;
654 char *q;
655 int c;
656
657 q = buf;
658 p = *pp;
659 while (qemu_isspace(*p)) {
660 p++;
661 }
662 if (*p == '\0') {
663 fail:
664 *q = '\0';
665 *pp = p;
666 return -1;
667 }
668 if (*p == '\"') {
669 p++;
670 while (*p != '\0' && *p != '\"') {
671 if (*p == '\\') {
672 p++;
673 c = *p++;
674 switch (c) {
675 case 'n':
676 c = '\n';
677 break;
678 case 'r':
679 c = '\r';
680 break;
681 case '\\':
682 case '\'':
683 case '\"':
684 break;
685 default:
686 printf("unsupported escape code: '\\%c'\n", c);
687 goto fail;
688 }
689 if ((q - buf) < buf_size - 1) {
690 *q++ = c;
691 }
692 } else {
693 if ((q - buf) < buf_size - 1) {
694 *q++ = *p;
695 }
696 p++;
697 }
698 }
699 if (*p != '\"') {
700 printf("unterminated string\n");
701 goto fail;
702 }
703 p++;
704 } else {
705 while (*p != '\0' && !qemu_isspace(*p)) {
706 if ((q - buf) < buf_size - 1) {
707 *q++ = *p;
708 }
709 p++;
710 }
711 }
712 *q = '\0';
713 *pp = p;
714 return 0;
715 }
716
717 #define MAX_ARGS 16
718
719 static void free_cmdline_args(char **args, int nb_args)
720 {
721 int i;
722
723 assert(nb_args <= MAX_ARGS);
724
725 for (i = 0; i < nb_args; i++) {
726 g_free(args[i]);
727 }
728
729 }
730
731 /*
732 * Parse the command line to get valid args.
733 * @cmdline: command line to be parsed.
734 * @pnb_args: location to store the number of args, must NOT be NULL.
735 * @args: location to store the args, which should be freed by caller, must
736 * NOT be NULL.
737 *
738 * Returns 0 on success, negative on failure.
739 *
740 * NOTE: this parser is an approximate form of the real command parser. Number
741 * of args have a limit of MAX_ARGS. If cmdline contains more, it will
742 * return with failure.
743 */
744 static int parse_cmdline(const char *cmdline,
745 int *pnb_args, char **args)
746 {
747 const char *p;
748 int nb_args, ret;
749 char buf[1024];
750
751 p = cmdline;
752 nb_args = 0;
753 for (;;) {
754 while (qemu_isspace(*p)) {
755 p++;
756 }
757 if (*p == '\0') {
758 break;
759 }
760 if (nb_args >= MAX_ARGS) {
761 goto fail;
762 }
763 ret = get_str(buf, sizeof(buf), &p);
764 if (ret < 0) {
765 goto fail;
766 }
767 args[nb_args] = g_strdup(buf);
768 nb_args++;
769 }
770 *pnb_args = nb_args;
771 return 0;
772
773 fail:
774 free_cmdline_args(args, nb_args);
775 return -1;
776 }
777
778 static void help_cmd_dump_one(Monitor *mon,
779 const mon_cmd_t *cmd,
780 char **prefix_args,
781 int prefix_args_nb)
782 {
783 int i;
784
785 for (i = 0; i < prefix_args_nb; i++) {
786 monitor_printf(mon, "%s ", prefix_args[i]);
787 }
788 monitor_printf(mon, "%s %s -- %s\n", cmd->name, cmd->params, cmd->help);
789 }
790
791 /* @args[@arg_index] is the valid command need to find in @cmds */
792 static void help_cmd_dump(Monitor *mon, const mon_cmd_t *cmds,
793 char **args, int nb_args, int arg_index)
794 {
795 const mon_cmd_t *cmd;
796
797 /* No valid arg need to compare with, dump all in *cmds */
798 if (arg_index >= nb_args) {
799 for (cmd = cmds; cmd->name != NULL; cmd++) {
800 help_cmd_dump_one(mon, cmd, args, arg_index);
801 }
802 return;
803 }
804
805 /* Find one entry to dump */
806 for (cmd = cmds; cmd->name != NULL; cmd++) {
807 if (compare_cmd(args[arg_index], cmd->name)) {
808 if (cmd->sub_table) {
809 /* continue with next arg */
810 help_cmd_dump(mon, cmd->sub_table,
811 args, nb_args, arg_index + 1);
812 } else {
813 help_cmd_dump_one(mon, cmd, args, arg_index);
814 }
815 break;
816 }
817 }
818 }
819
820 static void help_cmd(Monitor *mon, const char *name)
821 {
822 char *args[MAX_ARGS];
823 int nb_args = 0;
824
825 /* 1. parse user input */
826 if (name) {
827 /* special case for log, directly dump and return */
828 if (!strcmp(name, "log")) {
829 const QEMULogItem *item;
830 monitor_printf(mon, "Log items (comma separated):\n");
831 monitor_printf(mon, "%-10s %s\n", "none", "remove all logs");
832 for (item = qemu_log_items; item->mask != 0; item++) {
833 monitor_printf(mon, "%-10s %s\n", item->name, item->help);
834 }
835 return;
836 }
837
838 if (parse_cmdline(name, &nb_args, args) < 0) {
839 return;
840 }
841 }
842
843 /* 2. dump the contents according to parsed args */
844 help_cmd_dump(mon, mon->cmd_table, args, nb_args, 0);
845
846 free_cmdline_args(args, nb_args);
847 }
848
849 static void do_help_cmd(Monitor *mon, const QDict *qdict)
850 {
851 help_cmd(mon, qdict_get_try_str(qdict, "name"));
852 }
853
854 static void hmp_trace_event(Monitor *mon, const QDict *qdict)
855 {
856 const char *tp_name = qdict_get_str(qdict, "name");
857 bool new_state = qdict_get_bool(qdict, "option");
858 bool has_vcpu = qdict_haskey(qdict, "vcpu");
859 int vcpu = qdict_get_try_int(qdict, "vcpu", 0);
860 Error *local_err = NULL;
861
862 if (vcpu < 0) {
863 monitor_printf(mon, "argument vcpu must be positive");
864 return;
865 }
866
867 qmp_trace_event_set_state(tp_name, new_state, true, true, has_vcpu, vcpu, &local_err);
868 if (local_err) {
869 error_report_err(local_err);
870 }
871 }
872
873 #ifdef CONFIG_TRACE_SIMPLE
874 static void hmp_trace_file(Monitor *mon, const QDict *qdict)
875 {
876 const char *op = qdict_get_try_str(qdict, "op");
877 const char *arg = qdict_get_try_str(qdict, "arg");
878
879 if (!op) {
880 st_print_trace_file_status((FILE *)mon, &monitor_fprintf);
881 } else if (!strcmp(op, "on")) {
882 st_set_trace_file_enabled(true);
883 } else if (!strcmp(op, "off")) {
884 st_set_trace_file_enabled(false);
885 } else if (!strcmp(op, "flush")) {
886 st_flush_trace_buffer();
887 } else if (!strcmp(op, "set")) {
888 if (arg) {
889 st_set_trace_file(arg);
890 }
891 } else {
892 monitor_printf(mon, "unexpected argument \"%s\"\n", op);
893 help_cmd(mon, "trace-file");
894 }
895 }
896 #endif
897
898 static void hmp_info_help(Monitor *mon, const QDict *qdict)
899 {
900 help_cmd(mon, "info");
901 }
902
903 static void query_commands_cb(QmpCommand *cmd, void *opaque)
904 {
905 CommandInfoList *info, **list = opaque;
906
907 if (!cmd->enabled) {
908 return;
909 }
910
911 info = g_malloc0(sizeof(*info));
912 info->value = g_malloc0(sizeof(*info->value));
913 info->value->name = g_strdup(cmd->name);
914 info->next = *list;
915 *list = info;
916 }
917
918 CommandInfoList *qmp_query_commands(Error **errp)
919 {
920 CommandInfoList *list = NULL;
921
922 qmp_for_each_command(query_commands_cb, &list);
923
924 return list;
925 }
926
927 EventInfoList *qmp_query_events(Error **errp)
928 {
929 EventInfoList *info, *ev_list = NULL;
930 QAPIEvent e;
931
932 for (e = 0 ; e < QAPI_EVENT__MAX ; e++) {
933 const char *event_name = QAPIEvent_lookup[e];
934 assert(event_name != NULL);
935 info = g_malloc0(sizeof(*info));
936 info->value = g_malloc0(sizeof(*info->value));
937 info->value->name = g_strdup(event_name);
938
939 info->next = ev_list;
940 ev_list = info;
941 }
942
943 return ev_list;
944 }
945
946 /*
947 * Minor hack: generated marshalling suppressed for this command
948 * ('gen': false in the schema) so we can parse the JSON string
949 * directly into QObject instead of first parsing it with
950 * visit_type_SchemaInfoList() into a SchemaInfoList, then marshal it
951 * to QObject with generated output marshallers, every time. Instead,
952 * we do it in test-qobject-input-visitor.c, just to make sure
953 * qapi-introspect.py's output actually conforms to the schema.
954 */
955 static void qmp_query_qmp_schema(QDict *qdict, QObject **ret_data,
956 Error **errp)
957 {
958 *ret_data = qobject_from_json(qmp_schema_json);
959 }
960
961 /*
962 * We used to define commands in qmp-commands.hx in addition to the
963 * QAPI schema. This permitted defining some of them only in certain
964 * configurations. query-commands has always reflected that (good,
965 * because it lets QMP clients figure out what's actually available),
966 * while query-qmp-schema never did (not so good). This function is a
967 * hack to keep the configuration-specific commands defined exactly as
968 * before, even though qmp-commands.hx is gone.
969 *
970 * FIXME Educate the QAPI schema on configuration-specific commands,
971 * and drop this hack.
972 */
973 static void qmp_unregister_commands_hack(void)
974 {
975 #ifndef CONFIG_SPICE
976 qmp_unregister_command("query-spice");
977 #endif
978 #ifndef TARGET_I386
979 qmp_unregister_command("rtc-reset-reinjection");
980 #endif
981 #ifndef TARGET_S390X
982 qmp_unregister_command("dump-skeys");
983 #endif
984 #ifndef TARGET_ARM
985 qmp_unregister_command("query-gic-capabilities");
986 #endif
987 #if !defined(TARGET_S390X) && !defined(TARGET_I386)
988 qmp_unregister_command("query-cpu-model-expansion");
989 #endif
990 #if !defined(TARGET_S390X)
991 qmp_unregister_command("query-cpu-model-baseline");
992 qmp_unregister_command("query-cpu-model-comparison");
993 #endif
994 #if !defined(TARGET_PPC) && !defined(TARGET_ARM) && !defined(TARGET_I386) \
995 && !defined(TARGET_S390X)
996 qmp_unregister_command("query-cpu-definitions");
997 #endif
998 }
999
1000 static void qmp_init_marshal(void)
1001 {
1002 qmp_register_command("query-qmp-schema", qmp_query_qmp_schema,
1003 QCO_NO_OPTIONS);
1004 qmp_register_command("device_add", qmp_device_add,
1005 QCO_NO_OPTIONS);
1006 qmp_register_command("netdev_add", qmp_netdev_add,
1007 QCO_NO_OPTIONS);
1008
1009 /* call it after the rest of qapi_init() */
1010 register_module_init(qmp_unregister_commands_hack, MODULE_INIT_QAPI);
1011 }
1012
1013 qapi_init(qmp_init_marshal);
1014
1015 /* set the current CPU defined by the user */
1016 int monitor_set_cpu(int cpu_index)
1017 {
1018 CPUState *cpu;
1019
1020 cpu = qemu_get_cpu(cpu_index);
1021 if (cpu == NULL) {
1022 return -1;
1023 }
1024 cur_mon->mon_cpu = cpu;
1025 return 0;
1026 }
1027
1028 CPUState *mon_get_cpu(void)
1029 {
1030 if (!cur_mon->mon_cpu) {
1031 if (!first_cpu) {
1032 return NULL;
1033 }
1034 monitor_set_cpu(first_cpu->cpu_index);
1035 }
1036 cpu_synchronize_state(cur_mon->mon_cpu);
1037 return cur_mon->mon_cpu;
1038 }
1039
1040 CPUArchState *mon_get_cpu_env(void)
1041 {
1042 CPUState *cs = mon_get_cpu();
1043
1044 return cs ? cs->env_ptr : NULL;
1045 }
1046
1047 int monitor_get_cpu_index(void)
1048 {
1049 CPUState *cs = mon_get_cpu();
1050
1051 return cs ? cs->cpu_index : UNASSIGNED_CPU_INDEX;
1052 }
1053
1054 static void hmp_info_registers(Monitor *mon, const QDict *qdict)
1055 {
1056 CPUState *cs = mon_get_cpu();
1057
1058 if (!cs) {
1059 monitor_printf(mon, "No CPU available\n");
1060 return;
1061 }
1062 cpu_dump_state(cs, (FILE *)mon, monitor_fprintf, CPU_DUMP_FPU);
1063 }
1064
1065 static void hmp_info_jit(Monitor *mon, const QDict *qdict)
1066 {
1067 dump_exec_info((FILE *)mon, monitor_fprintf);
1068 dump_drift_info((FILE *)mon, monitor_fprintf);
1069 }
1070
1071 static void hmp_info_opcount(Monitor *mon, const QDict *qdict)
1072 {
1073 dump_opcount_info((FILE *)mon, monitor_fprintf);
1074 }
1075
1076 static void hmp_info_history(Monitor *mon, const QDict *qdict)
1077 {
1078 int i;
1079 const char *str;
1080
1081 if (!mon->rs)
1082 return;
1083 i = 0;
1084 for(;;) {
1085 str = readline_get_history(mon->rs, i);
1086 if (!str)
1087 break;
1088 monitor_printf(mon, "%d: '%s'\n", i, str);
1089 i++;
1090 }
1091 }
1092
1093 static void hmp_info_cpustats(Monitor *mon, const QDict *qdict)
1094 {
1095 CPUState *cs = mon_get_cpu();
1096
1097 if (!cs) {
1098 monitor_printf(mon, "No CPU available\n");
1099 return;
1100 }
1101 cpu_dump_statistics(cs, (FILE *)mon, &monitor_fprintf, 0);
1102 }
1103
1104 static void hmp_info_trace_events(Monitor *mon, const QDict *qdict)
1105 {
1106 const char *name = qdict_get_try_str(qdict, "name");
1107 bool has_vcpu = qdict_haskey(qdict, "vcpu");
1108 int vcpu = qdict_get_try_int(qdict, "vcpu", 0);
1109 TraceEventInfoList *events;
1110 TraceEventInfoList *elem;
1111 Error *local_err = NULL;
1112
1113 if (name == NULL) {
1114 name = "*";
1115 }
1116 if (vcpu < 0) {
1117 monitor_printf(mon, "argument vcpu must be positive");
1118 return;
1119 }
1120
1121 events = qmp_trace_event_get_state(name, has_vcpu, vcpu, &local_err);
1122 if (local_err) {
1123 error_report_err(local_err);
1124 return;
1125 }
1126
1127 for (elem = events; elem != NULL; elem = elem->next) {
1128 monitor_printf(mon, "%s : state %u\n",
1129 elem->value->name,
1130 elem->value->state == TRACE_EVENT_STATE_ENABLED ? 1 : 0);
1131 }
1132 qapi_free_TraceEventInfoList(events);
1133 }
1134
1135 void qmp_client_migrate_info(const char *protocol, const char *hostname,
1136 bool has_port, int64_t port,
1137 bool has_tls_port, int64_t tls_port,
1138 bool has_cert_subject, const char *cert_subject,
1139 Error **errp)
1140 {
1141 if (strcmp(protocol, "spice") == 0) {
1142 if (!qemu_using_spice(errp)) {
1143 return;
1144 }
1145
1146 if (!has_port && !has_tls_port) {
1147 error_setg(errp, QERR_MISSING_PARAMETER, "port/tls-port");
1148 return;
1149 }
1150
1151 if (qemu_spice_migrate_info(hostname,
1152 has_port ? port : -1,
1153 has_tls_port ? tls_port : -1,
1154 cert_subject)) {
1155 error_setg(errp, QERR_UNDEFINED_ERROR);
1156 return;
1157 }
1158 return;
1159 }
1160
1161 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "protocol", "spice");
1162 }
1163
1164 static void hmp_logfile(Monitor *mon, const QDict *qdict)
1165 {
1166 Error *err = NULL;
1167
1168 qemu_set_log_filename(qdict_get_str(qdict, "filename"), &err);
1169 if (err) {
1170 error_report_err(err);
1171 }
1172 }
1173
1174 static void hmp_log(Monitor *mon, const QDict *qdict)
1175 {
1176 int mask;
1177 const char *items = qdict_get_str(qdict, "items");
1178
1179 if (!strcmp(items, "none")) {
1180 mask = 0;
1181 } else {
1182 mask = qemu_str_to_log_mask(items);
1183 if (!mask) {
1184 help_cmd(mon, "log");
1185 return;
1186 }
1187 }
1188 qemu_set_log(mask);
1189 }
1190
1191 static void hmp_singlestep(Monitor *mon, const QDict *qdict)
1192 {
1193 const char *option = qdict_get_try_str(qdict, "option");
1194 if (!option || !strcmp(option, "on")) {
1195 singlestep = 1;
1196 } else if (!strcmp(option, "off")) {
1197 singlestep = 0;
1198 } else {
1199 monitor_printf(mon, "unexpected option %s\n", option);
1200 }
1201 }
1202
1203 static void hmp_gdbserver(Monitor *mon, const QDict *qdict)
1204 {
1205 const char *device = qdict_get_try_str(qdict, "device");
1206 if (!device)
1207 device = "tcp::" DEFAULT_GDBSTUB_PORT;
1208 if (gdbserver_start(device) < 0) {
1209 monitor_printf(mon, "Could not open gdbserver on device '%s'\n",
1210 device);
1211 } else if (strcmp(device, "none") == 0) {
1212 monitor_printf(mon, "Disabled gdbserver\n");
1213 } else {
1214 monitor_printf(mon, "Waiting for gdb connection on device '%s'\n",
1215 device);
1216 }
1217 }
1218
1219 static void hmp_watchdog_action(Monitor *mon, const QDict *qdict)
1220 {
1221 const char *action = qdict_get_str(qdict, "action");
1222 if (select_watchdog_action(action) == -1) {
1223 monitor_printf(mon, "Unknown watchdog action '%s'\n", action);
1224 }
1225 }
1226
1227 static void monitor_printc(Monitor *mon, int c)
1228 {
1229 monitor_printf(mon, "'");
1230 switch(c) {
1231 case '\'':
1232 monitor_printf(mon, "\\'");
1233 break;
1234 case '\\':
1235 monitor_printf(mon, "\\\\");
1236 break;
1237 case '\n':
1238 monitor_printf(mon, "\\n");
1239 break;
1240 case '\r':
1241 monitor_printf(mon, "\\r");
1242 break;
1243 default:
1244 if (c >= 32 && c <= 126) {
1245 monitor_printf(mon, "%c", c);
1246 } else {
1247 monitor_printf(mon, "\\x%02x", c);
1248 }
1249 break;
1250 }
1251 monitor_printf(mon, "'");
1252 }
1253
1254 static void memory_dump(Monitor *mon, int count, int format, int wsize,
1255 hwaddr addr, int is_physical)
1256 {
1257 int l, line_size, i, max_digits, len;
1258 uint8_t buf[16];
1259 uint64_t v;
1260 CPUState *cs = mon_get_cpu();
1261
1262 if (!cs && (format == 'i' || !is_physical)) {
1263 monitor_printf(mon, "Can not dump without CPU\n");
1264 return;
1265 }
1266
1267 if (format == 'i') {
1268 int flags = 0;
1269 #ifdef TARGET_I386
1270 CPUArchState *env = mon_get_cpu_env();
1271 if (wsize == 2) {
1272 flags = 1;
1273 } else if (wsize == 4) {
1274 flags = 0;
1275 } else {
1276 /* as default we use the current CS size */
1277 flags = 0;
1278 if (env) {
1279 #ifdef TARGET_X86_64
1280 if ((env->efer & MSR_EFER_LMA) &&
1281 (env->segs[R_CS].flags & DESC_L_MASK))
1282 flags = 2;
1283 else
1284 #endif
1285 if (!(env->segs[R_CS].flags & DESC_B_MASK))
1286 flags = 1;
1287 }
1288 }
1289 #endif
1290 #ifdef TARGET_PPC
1291 CPUArchState *env = mon_get_cpu_env();
1292 flags = msr_le << 16;
1293 flags |= env->bfd_mach;
1294 #endif
1295 monitor_disas(mon, cs, addr, count, is_physical, flags);
1296 return;
1297 }
1298
1299 len = wsize * count;
1300 if (wsize == 1)
1301 line_size = 8;
1302 else
1303 line_size = 16;
1304 max_digits = 0;
1305
1306 switch(format) {
1307 case 'o':
1308 max_digits = (wsize * 8 + 2) / 3;
1309 break;
1310 default:
1311 case 'x':
1312 max_digits = (wsize * 8) / 4;
1313 break;
1314 case 'u':
1315 case 'd':
1316 max_digits = (wsize * 8 * 10 + 32) / 33;
1317 break;
1318 case 'c':
1319 wsize = 1;
1320 break;
1321 }
1322
1323 while (len > 0) {
1324 if (is_physical)
1325 monitor_printf(mon, TARGET_FMT_plx ":", addr);
1326 else
1327 monitor_printf(mon, TARGET_FMT_lx ":", (target_ulong)addr);
1328 l = len;
1329 if (l > line_size)
1330 l = line_size;
1331 if (is_physical) {
1332 cpu_physical_memory_read(addr, buf, l);
1333 } else {
1334 if (cpu_memory_rw_debug(cs, addr, buf, l, 0) < 0) {
1335 monitor_printf(mon, " Cannot access memory\n");
1336 break;
1337 }
1338 }
1339 i = 0;
1340 while (i < l) {
1341 switch(wsize) {
1342 default:
1343 case 1:
1344 v = ldub_p(buf + i);
1345 break;
1346 case 2:
1347 v = lduw_p(buf + i);
1348 break;
1349 case 4:
1350 v = (uint32_t)ldl_p(buf + i);
1351 break;
1352 case 8:
1353 v = ldq_p(buf + i);
1354 break;
1355 }
1356 monitor_printf(mon, " ");
1357 switch(format) {
1358 case 'o':
1359 monitor_printf(mon, "%#*" PRIo64, max_digits, v);
1360 break;
1361 case 'x':
1362 monitor_printf(mon, "0x%0*" PRIx64, max_digits, v);
1363 break;
1364 case 'u':
1365 monitor_printf(mon, "%*" PRIu64, max_digits, v);
1366 break;
1367 case 'd':
1368 monitor_printf(mon, "%*" PRId64, max_digits, v);
1369 break;
1370 case 'c':
1371 monitor_printc(mon, v);
1372 break;
1373 }
1374 i += wsize;
1375 }
1376 monitor_printf(mon, "\n");
1377 addr += l;
1378 len -= l;
1379 }
1380 }
1381
1382 static void hmp_memory_dump(Monitor *mon, const QDict *qdict)
1383 {
1384 int count = qdict_get_int(qdict, "count");
1385 int format = qdict_get_int(qdict, "format");
1386 int size = qdict_get_int(qdict, "size");
1387 target_long addr = qdict_get_int(qdict, "addr");
1388
1389 memory_dump(mon, count, format, size, addr, 0);
1390 }
1391
1392 static void hmp_physical_memory_dump(Monitor *mon, const QDict *qdict)
1393 {
1394 int count = qdict_get_int(qdict, "count");
1395 int format = qdict_get_int(qdict, "format");
1396 int size = qdict_get_int(qdict, "size");
1397 hwaddr addr = qdict_get_int(qdict, "addr");
1398
1399 memory_dump(mon, count, format, size, addr, 1);
1400 }
1401
1402 static void do_print(Monitor *mon, const QDict *qdict)
1403 {
1404 int format = qdict_get_int(qdict, "format");
1405 hwaddr val = qdict_get_int(qdict, "val");
1406
1407 switch(format) {
1408 case 'o':
1409 monitor_printf(mon, "%#" HWADDR_PRIo, val);
1410 break;
1411 case 'x':
1412 monitor_printf(mon, "%#" HWADDR_PRIx, val);
1413 break;
1414 case 'u':
1415 monitor_printf(mon, "%" HWADDR_PRIu, val);
1416 break;
1417 default:
1418 case 'd':
1419 monitor_printf(mon, "%" HWADDR_PRId, val);
1420 break;
1421 case 'c':
1422 monitor_printc(mon, val);
1423 break;
1424 }
1425 monitor_printf(mon, "\n");
1426 }
1427
1428 static void hmp_sum(Monitor *mon, const QDict *qdict)
1429 {
1430 uint32_t addr;
1431 uint16_t sum;
1432 uint32_t start = qdict_get_int(qdict, "start");
1433 uint32_t size = qdict_get_int(qdict, "size");
1434
1435 sum = 0;
1436 for(addr = start; addr < (start + size); addr++) {
1437 uint8_t val = address_space_ldub(&address_space_memory, addr,
1438 MEMTXATTRS_UNSPECIFIED, NULL);
1439 /* BSD sum algorithm ('sum' Unix command) */
1440 sum = (sum >> 1) | (sum << 15);
1441 sum += val;
1442 }
1443 monitor_printf(mon, "%05d\n", sum);
1444 }
1445
1446 static int mouse_button_state;
1447
1448 static void hmp_mouse_move(Monitor *mon, const QDict *qdict)
1449 {
1450 int dx, dy, dz, button;
1451 const char *dx_str = qdict_get_str(qdict, "dx_str");
1452 const char *dy_str = qdict_get_str(qdict, "dy_str");
1453 const char *dz_str = qdict_get_try_str(qdict, "dz_str");
1454
1455 dx = strtol(dx_str, NULL, 0);
1456 dy = strtol(dy_str, NULL, 0);
1457 qemu_input_queue_rel(NULL, INPUT_AXIS_X, dx);
1458 qemu_input_queue_rel(NULL, INPUT_AXIS_Y, dy);
1459
1460 if (dz_str) {
1461 dz = strtol(dz_str, NULL, 0);
1462 if (dz != 0) {
1463 button = (dz > 0) ? INPUT_BUTTON_WHEEL_UP : INPUT_BUTTON_WHEEL_DOWN;
1464 qemu_input_queue_btn(NULL, button, true);
1465 qemu_input_event_sync();
1466 qemu_input_queue_btn(NULL, button, false);
1467 }
1468 }
1469 qemu_input_event_sync();
1470 }
1471
1472 static void hmp_mouse_button(Monitor *mon, const QDict *qdict)
1473 {
1474 static uint32_t bmap[INPUT_BUTTON__MAX] = {
1475 [INPUT_BUTTON_LEFT] = MOUSE_EVENT_LBUTTON,
1476 [INPUT_BUTTON_MIDDLE] = MOUSE_EVENT_MBUTTON,
1477 [INPUT_BUTTON_RIGHT] = MOUSE_EVENT_RBUTTON,
1478 };
1479 int button_state = qdict_get_int(qdict, "button_state");
1480
1481 if (mouse_button_state == button_state) {
1482 return;
1483 }
1484 qemu_input_update_buttons(NULL, bmap, mouse_button_state, button_state);
1485 qemu_input_event_sync();
1486 mouse_button_state = button_state;
1487 }
1488
1489 static void hmp_ioport_read(Monitor *mon, const QDict *qdict)
1490 {
1491 int size = qdict_get_int(qdict, "size");
1492 int addr = qdict_get_int(qdict, "addr");
1493 int has_index = qdict_haskey(qdict, "index");
1494 uint32_t val;
1495 int suffix;
1496
1497 if (has_index) {
1498 int index = qdict_get_int(qdict, "index");
1499 cpu_outb(addr & IOPORTS_MASK, index & 0xff);
1500 addr++;
1501 }
1502 addr &= 0xffff;
1503
1504 switch(size) {
1505 default:
1506 case 1:
1507 val = cpu_inb(addr);
1508 suffix = 'b';
1509 break;
1510 case 2:
1511 val = cpu_inw(addr);
1512 suffix = 'w';
1513 break;
1514 case 4:
1515 val = cpu_inl(addr);
1516 suffix = 'l';
1517 break;
1518 }
1519 monitor_printf(mon, "port%c[0x%04x] = %#0*x\n",
1520 suffix, addr, size * 2, val);
1521 }
1522
1523 static void hmp_ioport_write(Monitor *mon, const QDict *qdict)
1524 {
1525 int size = qdict_get_int(qdict, "size");
1526 int addr = qdict_get_int(qdict, "addr");
1527 int val = qdict_get_int(qdict, "val");
1528
1529 addr &= IOPORTS_MASK;
1530
1531 switch (size) {
1532 default:
1533 case 1:
1534 cpu_outb(addr, val);
1535 break;
1536 case 2:
1537 cpu_outw(addr, val);
1538 break;
1539 case 4:
1540 cpu_outl(addr, val);
1541 break;
1542 }
1543 }
1544
1545 static void hmp_boot_set(Monitor *mon, const QDict *qdict)
1546 {
1547 Error *local_err = NULL;
1548 const char *bootdevice = qdict_get_str(qdict, "bootdevice");
1549
1550 qemu_boot_set(bootdevice, &local_err);
1551 if (local_err) {
1552 error_report_err(local_err);
1553 } else {
1554 monitor_printf(mon, "boot device list now set to %s\n", bootdevice);
1555 }
1556 }
1557
1558 static void hmp_info_mtree(Monitor *mon, const QDict *qdict)
1559 {
1560 bool flatview = qdict_get_try_bool(qdict, "flatview", false);
1561
1562 mtree_info((fprintf_function)monitor_printf, mon, flatview);
1563 }
1564
1565 static void hmp_info_numa(Monitor *mon, const QDict *qdict)
1566 {
1567 int i;
1568 CPUState *cpu;
1569 uint64_t *node_mem;
1570
1571 node_mem = g_new0(uint64_t, nb_numa_nodes);
1572 query_numa_node_mem(node_mem);
1573 monitor_printf(mon, "%d nodes\n", nb_numa_nodes);
1574 for (i = 0; i < nb_numa_nodes; i++) {
1575 monitor_printf(mon, "node %d cpus:", i);
1576 CPU_FOREACH(cpu) {
1577 if (cpu->numa_node == i) {
1578 monitor_printf(mon, " %d", cpu->cpu_index);
1579 }
1580 }
1581 monitor_printf(mon, "\n");
1582 monitor_printf(mon, "node %d size: %" PRId64 " MB\n", i,
1583 node_mem[i] >> 20);
1584 }
1585 g_free(node_mem);
1586 }
1587
1588 #ifdef CONFIG_PROFILER
1589
1590 int64_t tcg_time;
1591 int64_t dev_time;
1592
1593 static void hmp_info_profile(Monitor *mon, const QDict *qdict)
1594 {
1595 monitor_printf(mon, "async time %" PRId64 " (%0.3f)\n",
1596 dev_time, dev_time / (double)NANOSECONDS_PER_SECOND);
1597 monitor_printf(mon, "qemu time %" PRId64 " (%0.3f)\n",
1598 tcg_time, tcg_time / (double)NANOSECONDS_PER_SECOND);
1599 tcg_time = 0;
1600 dev_time = 0;
1601 }
1602 #else
1603 static void hmp_info_profile(Monitor *mon, const QDict *qdict)
1604 {
1605 monitor_printf(mon, "Internal profiler not compiled\n");
1606 }
1607 #endif
1608
1609 /* Capture support */
1610 static QLIST_HEAD (capture_list_head, CaptureState) capture_head;
1611
1612 static void hmp_info_capture(Monitor *mon, const QDict *qdict)
1613 {
1614 int i;
1615 CaptureState *s;
1616
1617 for (s = capture_head.lh_first, i = 0; s; s = s->entries.le_next, ++i) {
1618 monitor_printf(mon, "[%d]: ", i);
1619 s->ops.info (s->opaque);
1620 }
1621 }
1622
1623 static void hmp_stopcapture(Monitor *mon, const QDict *qdict)
1624 {
1625 int i;
1626 int n = qdict_get_int(qdict, "n");
1627 CaptureState *s;
1628
1629 for (s = capture_head.lh_first, i = 0; s; s = s->entries.le_next, ++i) {
1630 if (i == n) {
1631 s->ops.destroy (s->opaque);
1632 QLIST_REMOVE (s, entries);
1633 g_free (s);
1634 return;
1635 }
1636 }
1637 }
1638
1639 static void hmp_wavcapture(Monitor *mon, const QDict *qdict)
1640 {
1641 const char *path = qdict_get_str(qdict, "path");
1642 int has_freq = qdict_haskey(qdict, "freq");
1643 int freq = qdict_get_try_int(qdict, "freq", -1);
1644 int has_bits = qdict_haskey(qdict, "bits");
1645 int bits = qdict_get_try_int(qdict, "bits", -1);
1646 int has_channels = qdict_haskey(qdict, "nchannels");
1647 int nchannels = qdict_get_try_int(qdict, "nchannels", -1);
1648 CaptureState *s;
1649
1650 s = g_malloc0 (sizeof (*s));
1651
1652 freq = has_freq ? freq : 44100;
1653 bits = has_bits ? bits : 16;
1654 nchannels = has_channels ? nchannels : 2;
1655
1656 if (wav_start_capture (s, path, freq, bits, nchannels)) {
1657 monitor_printf(mon, "Failed to add wave capture\n");
1658 g_free (s);
1659 return;
1660 }
1661 QLIST_INSERT_HEAD (&capture_head, s, entries);
1662 }
1663
1664 static qemu_acl *find_acl(Monitor *mon, const char *name)
1665 {
1666 qemu_acl *acl = qemu_acl_find(name);
1667
1668 if (!acl) {
1669 monitor_printf(mon, "acl: unknown list '%s'\n", name);
1670 }
1671 return acl;
1672 }
1673
1674 static void hmp_acl_show(Monitor *mon, const QDict *qdict)
1675 {
1676 const char *aclname = qdict_get_str(qdict, "aclname");
1677 qemu_acl *acl = find_acl(mon, aclname);
1678 qemu_acl_entry *entry;
1679 int i = 0;
1680
1681 if (acl) {
1682 monitor_printf(mon, "policy: %s\n",
1683 acl->defaultDeny ? "deny" : "allow");
1684 QTAILQ_FOREACH(entry, &acl->entries, next) {
1685 i++;
1686 monitor_printf(mon, "%d: %s %s\n", i,
1687 entry->deny ? "deny" : "allow", entry->match);
1688 }
1689 }
1690 }
1691
1692 static void hmp_acl_reset(Monitor *mon, const QDict *qdict)
1693 {
1694 const char *aclname = qdict_get_str(qdict, "aclname");
1695 qemu_acl *acl = find_acl(mon, aclname);
1696
1697 if (acl) {
1698 qemu_acl_reset(acl);
1699 monitor_printf(mon, "acl: removed all rules\n");
1700 }
1701 }
1702
1703 static void hmp_acl_policy(Monitor *mon, const QDict *qdict)
1704 {
1705 const char *aclname = qdict_get_str(qdict, "aclname");
1706 const char *policy = qdict_get_str(qdict, "policy");
1707 qemu_acl *acl = find_acl(mon, aclname);
1708
1709 if (acl) {
1710 if (strcmp(policy, "allow") == 0) {
1711 acl->defaultDeny = 0;
1712 monitor_printf(mon, "acl: policy set to 'allow'\n");
1713 } else if (strcmp(policy, "deny") == 0) {
1714 acl->defaultDeny = 1;
1715 monitor_printf(mon, "acl: policy set to 'deny'\n");
1716 } else {
1717 monitor_printf(mon, "acl: unknown policy '%s', "
1718 "expected 'deny' or 'allow'\n", policy);
1719 }
1720 }
1721 }
1722
1723 static void hmp_acl_add(Monitor *mon, const QDict *qdict)
1724 {
1725 const char *aclname = qdict_get_str(qdict, "aclname");
1726 const char *match = qdict_get_str(qdict, "match");
1727 const char *policy = qdict_get_str(qdict, "policy");
1728 int has_index = qdict_haskey(qdict, "index");
1729 int index = qdict_get_try_int(qdict, "index", -1);
1730 qemu_acl *acl = find_acl(mon, aclname);
1731 int deny, ret;
1732
1733 if (acl) {
1734 if (strcmp(policy, "allow") == 0) {
1735 deny = 0;
1736 } else if (strcmp(policy, "deny") == 0) {
1737 deny = 1;
1738 } else {
1739 monitor_printf(mon, "acl: unknown policy '%s', "
1740 "expected 'deny' or 'allow'\n", policy);
1741 return;
1742 }
1743 if (has_index)
1744 ret = qemu_acl_insert(acl, deny, match, index);
1745 else
1746 ret = qemu_acl_append(acl, deny, match);
1747 if (ret < 0)
1748 monitor_printf(mon, "acl: unable to add acl entry\n");
1749 else
1750 monitor_printf(mon, "acl: added rule at position %d\n", ret);
1751 }
1752 }
1753
1754 static void hmp_acl_remove(Monitor *mon, const QDict *qdict)
1755 {
1756 const char *aclname = qdict_get_str(qdict, "aclname");
1757 const char *match = qdict_get_str(qdict, "match");
1758 qemu_acl *acl = find_acl(mon, aclname);
1759 int ret;
1760
1761 if (acl) {
1762 ret = qemu_acl_remove(acl, match);
1763 if (ret < 0)
1764 monitor_printf(mon, "acl: no matching acl entry\n");
1765 else
1766 monitor_printf(mon, "acl: removed rule at position %d\n", ret);
1767 }
1768 }
1769
1770 void qmp_getfd(const char *fdname, Error **errp)
1771 {
1772 mon_fd_t *monfd;
1773 int fd;
1774
1775 fd = qemu_chr_fe_get_msgfd(&cur_mon->chr);
1776 if (fd == -1) {
1777 error_setg(errp, QERR_FD_NOT_SUPPLIED);
1778 return;
1779 }
1780
1781 if (qemu_isdigit(fdname[0])) {
1782 close(fd);
1783 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "fdname",
1784 "a name not starting with a digit");
1785 return;
1786 }
1787
1788 QLIST_FOREACH(monfd, &cur_mon->fds, next) {
1789 if (strcmp(monfd->name, fdname) != 0) {
1790 continue;
1791 }
1792
1793 close(monfd->fd);
1794 monfd->fd = fd;
1795 return;
1796 }
1797
1798 monfd = g_malloc0(sizeof(mon_fd_t));
1799 monfd->name = g_strdup(fdname);
1800 monfd->fd = fd;
1801
1802 QLIST_INSERT_HEAD(&cur_mon->fds, monfd, next);
1803 }
1804
1805 void qmp_closefd(const char *fdname, Error **errp)
1806 {
1807 mon_fd_t *monfd;
1808
1809 QLIST_FOREACH(monfd, &cur_mon->fds, next) {
1810 if (strcmp(monfd->name, fdname) != 0) {
1811 continue;
1812 }
1813
1814 QLIST_REMOVE(monfd, next);
1815 close(monfd->fd);
1816 g_free(monfd->name);
1817 g_free(monfd);
1818 return;
1819 }
1820
1821 error_setg(errp, QERR_FD_NOT_FOUND, fdname);
1822 }
1823
1824 static void hmp_loadvm(Monitor *mon, const QDict *qdict)
1825 {
1826 int saved_vm_running = runstate_is_running();
1827 const char *name = qdict_get_str(qdict, "name");
1828
1829 vm_stop(RUN_STATE_RESTORE_VM);
1830
1831 if (load_vmstate(name) == 0 && saved_vm_running) {
1832 vm_start();
1833 }
1834 }
1835
1836 int monitor_get_fd(Monitor *mon, const char *fdname, Error **errp)
1837 {
1838 mon_fd_t *monfd;
1839
1840 QLIST_FOREACH(monfd, &mon->fds, next) {
1841 int fd;
1842
1843 if (strcmp(monfd->name, fdname) != 0) {
1844 continue;
1845 }
1846
1847 fd = monfd->fd;
1848
1849 /* caller takes ownership of fd */
1850 QLIST_REMOVE(monfd, next);
1851 g_free(monfd->name);
1852 g_free(monfd);
1853
1854 return fd;
1855 }
1856
1857 error_setg(errp, "File descriptor named '%s' has not been found", fdname);
1858 return -1;
1859 }
1860
1861 static void monitor_fdset_cleanup(MonFdset *mon_fdset)
1862 {
1863 MonFdsetFd *mon_fdset_fd;
1864 MonFdsetFd *mon_fdset_fd_next;
1865
1866 QLIST_FOREACH_SAFE(mon_fdset_fd, &mon_fdset->fds, next, mon_fdset_fd_next) {
1867 if ((mon_fdset_fd->removed ||
1868 (QLIST_EMPTY(&mon_fdset->dup_fds) && mon_refcount == 0)) &&
1869 runstate_is_running()) {
1870 close(mon_fdset_fd->fd);
1871 g_free(mon_fdset_fd->opaque);
1872 QLIST_REMOVE(mon_fdset_fd, next);
1873 g_free(mon_fdset_fd);
1874 }
1875 }
1876
1877 if (QLIST_EMPTY(&mon_fdset->fds) && QLIST_EMPTY(&mon_fdset->dup_fds)) {
1878 QLIST_REMOVE(mon_fdset, next);
1879 g_free(mon_fdset);
1880 }
1881 }
1882
1883 static void monitor_fdsets_cleanup(void)
1884 {
1885 MonFdset *mon_fdset;
1886 MonFdset *mon_fdset_next;
1887
1888 QLIST_FOREACH_SAFE(mon_fdset, &mon_fdsets, next, mon_fdset_next) {
1889 monitor_fdset_cleanup(mon_fdset);
1890 }
1891 }
1892
1893 AddfdInfo *qmp_add_fd(bool has_fdset_id, int64_t fdset_id, bool has_opaque,
1894 const char *opaque, Error **errp)
1895 {
1896 int fd;
1897 Monitor *mon = cur_mon;
1898 AddfdInfo *fdinfo;
1899
1900 fd = qemu_chr_fe_get_msgfd(&mon->chr);
1901 if (fd == -1) {
1902 error_setg(errp, QERR_FD_NOT_SUPPLIED);
1903 goto error;
1904 }
1905
1906 fdinfo = monitor_fdset_add_fd(fd, has_fdset_id, fdset_id,
1907 has_opaque, opaque, errp);
1908 if (fdinfo) {
1909 return fdinfo;
1910 }
1911
1912 error:
1913 if (fd != -1) {
1914 close(fd);
1915 }
1916 return NULL;
1917 }
1918
1919 void qmp_remove_fd(int64_t fdset_id, bool has_fd, int64_t fd, Error **errp)
1920 {
1921 MonFdset *mon_fdset;
1922 MonFdsetFd *mon_fdset_fd;
1923 char fd_str[60];
1924
1925 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
1926 if (mon_fdset->id != fdset_id) {
1927 continue;
1928 }
1929 QLIST_FOREACH(mon_fdset_fd, &mon_fdset->fds, next) {
1930 if (has_fd) {
1931 if (mon_fdset_fd->fd != fd) {
1932 continue;
1933 }
1934 mon_fdset_fd->removed = true;
1935 break;
1936 } else {
1937 mon_fdset_fd->removed = true;
1938 }
1939 }
1940 if (has_fd && !mon_fdset_fd) {
1941 goto error;
1942 }
1943 monitor_fdset_cleanup(mon_fdset);
1944 return;
1945 }
1946
1947 error:
1948 if (has_fd) {
1949 snprintf(fd_str, sizeof(fd_str), "fdset-id:%" PRId64 ", fd:%" PRId64,
1950 fdset_id, fd);
1951 } else {
1952 snprintf(fd_str, sizeof(fd_str), "fdset-id:%" PRId64, fdset_id);
1953 }
1954 error_setg(errp, QERR_FD_NOT_FOUND, fd_str);
1955 }
1956
1957 FdsetInfoList *qmp_query_fdsets(Error **errp)
1958 {
1959 MonFdset *mon_fdset;
1960 MonFdsetFd *mon_fdset_fd;
1961 FdsetInfoList *fdset_list = NULL;
1962
1963 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
1964 FdsetInfoList *fdset_info = g_malloc0(sizeof(*fdset_info));
1965 FdsetFdInfoList *fdsetfd_list = NULL;
1966
1967 fdset_info->value = g_malloc0(sizeof(*fdset_info->value));
1968 fdset_info->value->fdset_id = mon_fdset->id;
1969
1970 QLIST_FOREACH(mon_fdset_fd, &mon_fdset->fds, next) {
1971 FdsetFdInfoList *fdsetfd_info;
1972
1973 fdsetfd_info = g_malloc0(sizeof(*fdsetfd_info));
1974 fdsetfd_info->value = g_malloc0(sizeof(*fdsetfd_info->value));
1975 fdsetfd_info->value->fd = mon_fdset_fd->fd;
1976 if (mon_fdset_fd->opaque) {
1977 fdsetfd_info->value->has_opaque = true;
1978 fdsetfd_info->value->opaque = g_strdup(mon_fdset_fd->opaque);
1979 } else {
1980 fdsetfd_info->value->has_opaque = false;
1981 }
1982
1983 fdsetfd_info->next = fdsetfd_list;
1984 fdsetfd_list = fdsetfd_info;
1985 }
1986
1987 fdset_info->value->fds = fdsetfd_list;
1988
1989 fdset_info->next = fdset_list;
1990 fdset_list = fdset_info;
1991 }
1992
1993 return fdset_list;
1994 }
1995
1996 AddfdInfo *monitor_fdset_add_fd(int fd, bool has_fdset_id, int64_t fdset_id,
1997 bool has_opaque, const char *opaque,
1998 Error **errp)
1999 {
2000 MonFdset *mon_fdset = NULL;
2001 MonFdsetFd *mon_fdset_fd;
2002 AddfdInfo *fdinfo;
2003
2004 if (has_fdset_id) {
2005 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2006 /* Break if match found or match impossible due to ordering by ID */
2007 if (fdset_id <= mon_fdset->id) {
2008 if (fdset_id < mon_fdset->id) {
2009 mon_fdset = NULL;
2010 }
2011 break;
2012 }
2013 }
2014 }
2015
2016 if (mon_fdset == NULL) {
2017 int64_t fdset_id_prev = -1;
2018 MonFdset *mon_fdset_cur = QLIST_FIRST(&mon_fdsets);
2019
2020 if (has_fdset_id) {
2021 if (fdset_id < 0) {
2022 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "fdset-id",
2023 "a non-negative value");
2024 return NULL;
2025 }
2026 /* Use specified fdset ID */
2027 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2028 mon_fdset_cur = mon_fdset;
2029 if (fdset_id < mon_fdset_cur->id) {
2030 break;
2031 }
2032 }
2033 } else {
2034 /* Use first available fdset ID */
2035 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2036 mon_fdset_cur = mon_fdset;
2037 if (fdset_id_prev == mon_fdset_cur->id - 1) {
2038 fdset_id_prev = mon_fdset_cur->id;
2039 continue;
2040 }
2041 break;
2042 }
2043 }
2044
2045 mon_fdset = g_malloc0(sizeof(*mon_fdset));
2046 if (has_fdset_id) {
2047 mon_fdset->id = fdset_id;
2048 } else {
2049 mon_fdset->id = fdset_id_prev + 1;
2050 }
2051
2052 /* The fdset list is ordered by fdset ID */
2053 if (!mon_fdset_cur) {
2054 QLIST_INSERT_HEAD(&mon_fdsets, mon_fdset, next);
2055 } else if (mon_fdset->id < mon_fdset_cur->id) {
2056 QLIST_INSERT_BEFORE(mon_fdset_cur, mon_fdset, next);
2057 } else {
2058 QLIST_INSERT_AFTER(mon_fdset_cur, mon_fdset, next);
2059 }
2060 }
2061
2062 mon_fdset_fd = g_malloc0(sizeof(*mon_fdset_fd));
2063 mon_fdset_fd->fd = fd;
2064 mon_fdset_fd->removed = false;
2065 if (has_opaque) {
2066 mon_fdset_fd->opaque = g_strdup(opaque);
2067 }
2068 QLIST_INSERT_HEAD(&mon_fdset->fds, mon_fdset_fd, next);
2069
2070 fdinfo = g_malloc0(sizeof(*fdinfo));
2071 fdinfo->fdset_id = mon_fdset->id;
2072 fdinfo->fd = mon_fdset_fd->fd;
2073
2074 return fdinfo;
2075 }
2076
2077 int monitor_fdset_get_fd(int64_t fdset_id, int flags)
2078 {
2079 #ifndef _WIN32
2080 MonFdset *mon_fdset;
2081 MonFdsetFd *mon_fdset_fd;
2082 int mon_fd_flags;
2083
2084 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2085 if (mon_fdset->id != fdset_id) {
2086 continue;
2087 }
2088 QLIST_FOREACH(mon_fdset_fd, &mon_fdset->fds, next) {
2089 mon_fd_flags = fcntl(mon_fdset_fd->fd, F_GETFL);
2090 if (mon_fd_flags == -1) {
2091 return -1;
2092 }
2093
2094 if ((flags & O_ACCMODE) == (mon_fd_flags & O_ACCMODE)) {
2095 return mon_fdset_fd->fd;
2096 }
2097 }
2098 errno = EACCES;
2099 return -1;
2100 }
2101 #endif
2102
2103 errno = ENOENT;
2104 return -1;
2105 }
2106
2107 int monitor_fdset_dup_fd_add(int64_t fdset_id, int dup_fd)
2108 {
2109 MonFdset *mon_fdset;
2110 MonFdsetFd *mon_fdset_fd_dup;
2111
2112 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2113 if (mon_fdset->id != fdset_id) {
2114 continue;
2115 }
2116 QLIST_FOREACH(mon_fdset_fd_dup, &mon_fdset->dup_fds, next) {
2117 if (mon_fdset_fd_dup->fd == dup_fd) {
2118 return -1;
2119 }
2120 }
2121 mon_fdset_fd_dup = g_malloc0(sizeof(*mon_fdset_fd_dup));
2122 mon_fdset_fd_dup->fd = dup_fd;
2123 QLIST_INSERT_HEAD(&mon_fdset->dup_fds, mon_fdset_fd_dup, next);
2124 return 0;
2125 }
2126 return -1;
2127 }
2128
2129 static int monitor_fdset_dup_fd_find_remove(int dup_fd, bool remove)
2130 {
2131 MonFdset *mon_fdset;
2132 MonFdsetFd *mon_fdset_fd_dup;
2133
2134 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2135 QLIST_FOREACH(mon_fdset_fd_dup, &mon_fdset->dup_fds, next) {
2136 if (mon_fdset_fd_dup->fd == dup_fd) {
2137 if (remove) {
2138 QLIST_REMOVE(mon_fdset_fd_dup, next);
2139 if (QLIST_EMPTY(&mon_fdset->dup_fds)) {
2140 monitor_fdset_cleanup(mon_fdset);
2141 }
2142 return -1;
2143 } else {
2144 return mon_fdset->id;
2145 }
2146 }
2147 }
2148 }
2149 return -1;
2150 }
2151
2152 int monitor_fdset_dup_fd_find(int dup_fd)
2153 {
2154 return monitor_fdset_dup_fd_find_remove(dup_fd, false);
2155 }
2156
2157 void monitor_fdset_dup_fd_remove(int dup_fd)
2158 {
2159 monitor_fdset_dup_fd_find_remove(dup_fd, true);
2160 }
2161
2162 int monitor_fd_param(Monitor *mon, const char *fdname, Error **errp)
2163 {
2164 int fd;
2165 Error *local_err = NULL;
2166
2167 if (!qemu_isdigit(fdname[0]) && mon) {
2168 fd = monitor_get_fd(mon, fdname, &local_err);
2169 } else {
2170 fd = qemu_parse_fd(fdname);
2171 if (fd == -1) {
2172 error_setg(&local_err, "Invalid file descriptor number '%s'",
2173 fdname);
2174 }
2175 }
2176 if (local_err) {
2177 error_propagate(errp, local_err);
2178 assert(fd == -1);
2179 } else {
2180 assert(fd != -1);
2181 }
2182
2183 return fd;
2184 }
2185
2186 /* Please update hmp-commands.hx when adding or changing commands */
2187 static mon_cmd_t info_cmds[] = {
2188 #include "hmp-commands-info.h"
2189 { NULL, NULL, },
2190 };
2191
2192 /* mon_cmds and info_cmds would be sorted at runtime */
2193 static mon_cmd_t mon_cmds[] = {
2194 #include "hmp-commands.h"
2195 { NULL, NULL, },
2196 };
2197
2198 /*******************************************************************/
2199
2200 static const char *pch;
2201 static sigjmp_buf expr_env;
2202
2203
2204 static void GCC_FMT_ATTR(2, 3) QEMU_NORETURN
2205 expr_error(Monitor *mon, const char *fmt, ...)
2206 {
2207 va_list ap;
2208 va_start(ap, fmt);
2209 monitor_vprintf(mon, fmt, ap);
2210 monitor_printf(mon, "\n");
2211 va_end(ap);
2212 siglongjmp(expr_env, 1);
2213 }
2214
2215 /* return 0 if OK, -1 if not found */
2216 static int get_monitor_def(target_long *pval, const char *name)
2217 {
2218 const MonitorDef *md = target_monitor_defs();
2219 CPUState *cs = mon_get_cpu();
2220 void *ptr;
2221 uint64_t tmp = 0;
2222 int ret;
2223
2224 if (cs == NULL || md == NULL) {
2225 return -1;
2226 }
2227
2228 for(; md->name != NULL; md++) {
2229 if (compare_cmd(name, md->name)) {
2230 if (md->get_value) {
2231 *pval = md->get_value(md, md->offset);
2232 } else {
2233 CPUArchState *env = mon_get_cpu_env();
2234 ptr = (uint8_t *)env + md->offset;
2235 switch(md->type) {
2236 case MD_I32:
2237 *pval = *(int32_t *)ptr;
2238 break;
2239 case MD_TLONG:
2240 *pval = *(target_long *)ptr;
2241 break;
2242 default:
2243 *pval = 0;
2244 break;
2245 }
2246 }
2247 return 0;
2248 }
2249 }
2250
2251 ret = target_get_monitor_def(cs, name, &tmp);
2252 if (!ret) {
2253 *pval = (target_long) tmp;
2254 }
2255
2256 return ret;
2257 }
2258
2259 static void next(void)
2260 {
2261 if (*pch != '\0') {
2262 pch++;
2263 while (qemu_isspace(*pch))
2264 pch++;
2265 }
2266 }
2267
2268 static int64_t expr_sum(Monitor *mon);
2269
2270 static int64_t expr_unary(Monitor *mon)
2271 {
2272 int64_t n;
2273 char *p;
2274 int ret;
2275
2276 switch(*pch) {
2277 case '+':
2278 next();
2279 n = expr_unary(mon);
2280 break;
2281 case '-':
2282 next();
2283 n = -expr_unary(mon);
2284 break;
2285 case '~':
2286 next();
2287 n = ~expr_unary(mon);
2288 break;
2289 case '(':
2290 next();
2291 n = expr_sum(mon);
2292 if (*pch != ')') {
2293 expr_error(mon, "')' expected");
2294 }
2295 next();
2296 break;
2297 case '\'':
2298 pch++;
2299 if (*pch == '\0')
2300 expr_error(mon, "character constant expected");
2301 n = *pch;
2302 pch++;
2303 if (*pch != '\'')
2304 expr_error(mon, "missing terminating \' character");
2305 next();
2306 break;
2307 case '$':
2308 {
2309 char buf[128], *q;
2310 target_long reg=0;
2311
2312 pch++;
2313 q = buf;
2314 while ((*pch >= 'a' && *pch <= 'z') ||
2315 (*pch >= 'A' && *pch <= 'Z') ||
2316 (*pch >= '0' && *pch <= '9') ||
2317 *pch == '_' || *pch == '.') {
2318 if ((q - buf) < sizeof(buf) - 1)
2319 *q++ = *pch;
2320 pch++;
2321 }
2322 while (qemu_isspace(*pch))
2323 pch++;
2324 *q = 0;
2325 ret = get_monitor_def(&reg, buf);
2326 if (ret < 0)
2327 expr_error(mon, "unknown register");
2328 n = reg;
2329 }
2330 break;
2331 case '\0':
2332 expr_error(mon, "unexpected end of expression");
2333 n = 0;
2334 break;
2335 default:
2336 errno = 0;
2337 n = strtoull(pch, &p, 0);
2338 if (errno == ERANGE) {
2339 expr_error(mon, "number too large");
2340 }
2341 if (pch == p) {
2342 expr_error(mon, "invalid char '%c' in expression", *p);
2343 }
2344 pch = p;
2345 while (qemu_isspace(*pch))
2346 pch++;
2347 break;
2348 }
2349 return n;
2350 }
2351
2352
2353 static int64_t expr_prod(Monitor *mon)
2354 {
2355 int64_t val, val2;
2356 int op;
2357
2358 val = expr_unary(mon);
2359 for(;;) {
2360 op = *pch;
2361 if (op != '*' && op != '/' && op != '%')
2362 break;
2363 next();
2364 val2 = expr_unary(mon);
2365 switch(op) {
2366 default:
2367 case '*':
2368 val *= val2;
2369 break;
2370 case '/':
2371 case '%':
2372 if (val2 == 0)
2373 expr_error(mon, "division by zero");
2374 if (op == '/')
2375 val /= val2;
2376 else
2377 val %= val2;
2378 break;
2379 }
2380 }
2381 return val;
2382 }
2383
2384 static int64_t expr_logic(Monitor *mon)
2385 {
2386 int64_t val, val2;
2387 int op;
2388
2389 val = expr_prod(mon);
2390 for(;;) {
2391 op = *pch;
2392 if (op != '&' && op != '|' && op != '^')
2393 break;
2394 next();
2395 val2 = expr_prod(mon);
2396 switch(op) {
2397 default:
2398 case '&':
2399 val &= val2;
2400 break;
2401 case '|':
2402 val |= val2;
2403 break;
2404 case '^':
2405 val ^= val2;
2406 break;
2407 }
2408 }
2409 return val;
2410 }
2411
2412 static int64_t expr_sum(Monitor *mon)
2413 {
2414 int64_t val, val2;
2415 int op;
2416
2417 val = expr_logic(mon);
2418 for(;;) {
2419 op = *pch;
2420 if (op != '+' && op != '-')
2421 break;
2422 next();
2423 val2 = expr_logic(mon);
2424 if (op == '+')
2425 val += val2;
2426 else
2427 val -= val2;
2428 }
2429 return val;
2430 }
2431
2432 static int get_expr(Monitor *mon, int64_t *pval, const char **pp)
2433 {
2434 pch = *pp;
2435 if (sigsetjmp(expr_env, 0)) {
2436 *pp = pch;
2437 return -1;
2438 }
2439 while (qemu_isspace(*pch))
2440 pch++;
2441 *pval = expr_sum(mon);
2442 *pp = pch;
2443 return 0;
2444 }
2445
2446 static int get_double(Monitor *mon, double *pval, const char **pp)
2447 {
2448 const char *p = *pp;
2449 char *tailp;
2450 double d;
2451
2452 d = strtod(p, &tailp);
2453 if (tailp == p) {
2454 monitor_printf(mon, "Number expected\n");
2455 return -1;
2456 }
2457 if (d != d || d - d != 0) {
2458 /* NaN or infinity */
2459 monitor_printf(mon, "Bad number\n");
2460 return -1;
2461 }
2462 *pval = d;
2463 *pp = tailp;
2464 return 0;
2465 }
2466
2467 /*
2468 * Store the command-name in cmdname, and return a pointer to
2469 * the remaining of the command string.
2470 */
2471 static const char *get_command_name(const char *cmdline,
2472 char *cmdname, size_t nlen)
2473 {
2474 size_t len;
2475 const char *p, *pstart;
2476
2477 p = cmdline;
2478 while (qemu_isspace(*p))
2479 p++;
2480 if (*p == '\0')
2481 return NULL;
2482 pstart = p;
2483 while (*p != '\0' && *p != '/' && !qemu_isspace(*p))
2484 p++;
2485 len = p - pstart;
2486 if (len > nlen - 1)
2487 len = nlen - 1;
2488 memcpy(cmdname, pstart, len);
2489 cmdname[len] = '\0';
2490 return p;
2491 }
2492
2493 /**
2494 * Read key of 'type' into 'key' and return the current
2495 * 'type' pointer.
2496 */
2497 static char *key_get_info(const char *type, char **key)
2498 {
2499 size_t len;
2500 char *p, *str;
2501
2502 if (*type == ',')
2503 type++;
2504
2505 p = strchr(type, ':');
2506 if (!p) {
2507 *key = NULL;
2508 return NULL;
2509 }
2510 len = p - type;
2511
2512 str = g_malloc(len + 1);
2513 memcpy(str, type, len);
2514 str[len] = '\0';
2515
2516 *key = str;
2517 return ++p;
2518 }
2519
2520 static int default_fmt_format = 'x';
2521 static int default_fmt_size = 4;
2522
2523 static int is_valid_option(const char *c, const char *typestr)
2524 {
2525 char option[3];
2526
2527 option[0] = '-';
2528 option[1] = *c;
2529 option[2] = '\0';
2530
2531 typestr = strstr(typestr, option);
2532 return (typestr != NULL);
2533 }
2534
2535 static const mon_cmd_t *search_dispatch_table(const mon_cmd_t *disp_table,
2536 const char *cmdname)
2537 {
2538 const mon_cmd_t *cmd;
2539
2540 for (cmd = disp_table; cmd->name != NULL; cmd++) {
2541 if (compare_cmd(cmdname, cmd->name)) {
2542 return cmd;
2543 }
2544 }
2545
2546 return NULL;
2547 }
2548
2549 /*
2550 * Parse command name from @cmdp according to command table @table.
2551 * If blank, return NULL.
2552 * Else, if no valid command can be found, report to @mon, and return
2553 * NULL.
2554 * Else, change @cmdp to point right behind the name, and return its
2555 * command table entry.
2556 * Do not assume the return value points into @table! It doesn't when
2557 * the command is found in a sub-command table.
2558 */
2559 static const mon_cmd_t *monitor_parse_command(Monitor *mon,
2560 const char **cmdp,
2561 mon_cmd_t *table)
2562 {
2563 const char *p;
2564 const mon_cmd_t *cmd;
2565 char cmdname[256];
2566
2567 /* extract the command name */
2568 p = get_command_name(*cmdp, cmdname, sizeof(cmdname));
2569 if (!p)
2570 return NULL;
2571
2572 cmd = search_dispatch_table(table, cmdname);
2573 if (!cmd) {
2574 monitor_printf(mon, "unknown command: '%.*s'\n",
2575 (int)(p - *cmdp), *cmdp);
2576 return NULL;
2577 }
2578
2579 /* filter out following useless space */
2580 while (qemu_isspace(*p)) {
2581 p++;
2582 }
2583
2584 *cmdp = p;
2585 /* search sub command */
2586 if (cmd->sub_table != NULL && *p != '\0') {
2587 return monitor_parse_command(mon, cmdp, cmd->sub_table);
2588 }
2589
2590 return cmd;
2591 }
2592
2593 /*
2594 * Parse arguments for @cmd.
2595 * If it can't be parsed, report to @mon, and return NULL.
2596 * Else, insert command arguments into a QDict, and return it.
2597 * Note: On success, caller has to free the QDict structure.
2598 */
2599
2600 static QDict *monitor_parse_arguments(Monitor *mon,
2601 const char **endp,
2602 const mon_cmd_t *cmd)
2603 {
2604 const char *typestr;
2605 char *key;
2606 int c;
2607 const char *p = *endp;
2608 char buf[1024];
2609 QDict *qdict = qdict_new();
2610
2611 /* parse the parameters */
2612 typestr = cmd->args_type;
2613 for(;;) {
2614 typestr = key_get_info(typestr, &key);
2615 if (!typestr)
2616 break;
2617 c = *typestr;
2618 typestr++;
2619 switch(c) {
2620 case 'F':
2621 case 'B':
2622 case 's':
2623 {
2624 int ret;
2625
2626 while (qemu_isspace(*p))
2627 p++;
2628 if (*typestr == '?') {
2629 typestr++;
2630 if (*p == '\0') {
2631 /* no optional string: NULL argument */
2632 break;
2633 }
2634 }
2635 ret = get_str(buf, sizeof(buf), &p);
2636 if (ret < 0) {
2637 switch(c) {
2638 case 'F':
2639 monitor_printf(mon, "%s: filename expected\n",
2640 cmd->name);
2641 break;
2642 case 'B':
2643 monitor_printf(mon, "%s: block device name expected\n",
2644 cmd->name);
2645 break;
2646 default:
2647 monitor_printf(mon, "%s: string expected\n", cmd->name);
2648 break;
2649 }
2650 goto fail;
2651 }
2652 qdict_put(qdict, key, qstring_from_str(buf));
2653 }
2654 break;
2655 case 'O':
2656 {
2657 QemuOptsList *opts_list;
2658 QemuOpts *opts;
2659
2660 opts_list = qemu_find_opts(key);
2661 if (!opts_list || opts_list->desc->name) {
2662 goto bad_type;
2663 }
2664 while (qemu_isspace(*p)) {
2665 p++;
2666 }
2667 if (!*p)
2668 break;
2669 if (get_str(buf, sizeof(buf), &p) < 0) {
2670 goto fail;
2671 }
2672 opts = qemu_opts_parse_noisily(opts_list, buf, true);
2673 if (!opts) {
2674 goto fail;
2675 }
2676 qemu_opts_to_qdict(opts, qdict);
2677 qemu_opts_del(opts);
2678 }
2679 break;
2680 case '/':
2681 {
2682 int count, format, size;
2683
2684 while (qemu_isspace(*p))
2685 p++;
2686 if (*p == '/') {
2687 /* format found */
2688 p++;
2689 count = 1;
2690 if (qemu_isdigit(*p)) {
2691 count = 0;
2692 while (qemu_isdigit(*p)) {
2693 count = count * 10 + (*p - '0');
2694 p++;
2695 }
2696 }
2697 size = -1;
2698 format = -1;
2699 for(;;) {
2700 switch(*p) {
2701 case 'o':
2702 case 'd':
2703 case 'u':
2704 case 'x':
2705 case 'i':
2706 case 'c':
2707 format = *p++;
2708 break;
2709 case 'b':
2710 size = 1;
2711 p++;
2712 break;
2713 case 'h':
2714 size = 2;
2715 p++;
2716 break;
2717 case 'w':
2718 size = 4;
2719 p++;
2720 break;
2721 case 'g':
2722 case 'L':
2723 size = 8;
2724 p++;
2725 break;
2726 default:
2727 goto next;
2728 }
2729 }
2730 next:
2731 if (*p != '\0' && !qemu_isspace(*p)) {
2732 monitor_printf(mon, "invalid char in format: '%c'\n",
2733 *p);
2734 goto fail;
2735 }
2736 if (format < 0)
2737 format = default_fmt_format;
2738 if (format != 'i') {
2739 /* for 'i', not specifying a size gives -1 as size */
2740 if (size < 0)
2741 size = default_fmt_size;
2742 default_fmt_size = size;
2743 }
2744 default_fmt_format = format;
2745 } else {
2746 count = 1;
2747 format = default_fmt_format;
2748 if (format != 'i') {
2749 size = default_fmt_size;
2750 } else {
2751 size = -1;
2752 }
2753 }
2754 qdict_put(qdict, "count", qint_from_int(count));
2755 qdict_put(qdict, "format", qint_from_int(format));
2756 qdict_put(qdict, "size", qint_from_int(size));
2757 }
2758 break;
2759 case 'i':
2760 case 'l':
2761 case 'M':
2762 {
2763 int64_t val;
2764
2765 while (qemu_isspace(*p))
2766 p++;
2767 if (*typestr == '?' || *typestr == '.') {
2768 if (*typestr == '?') {
2769 if (*p == '\0') {
2770 typestr++;
2771 break;
2772 }
2773 } else {
2774 if (*p == '.') {
2775 p++;
2776 while (qemu_isspace(*p))
2777 p++;
2778 } else {
2779 typestr++;
2780 break;
2781 }
2782 }
2783 typestr++;
2784 }
2785 if (get_expr(mon, &val, &p))
2786 goto fail;
2787 /* Check if 'i' is greater than 32-bit */
2788 if ((c == 'i') && ((val >> 32) & 0xffffffff)) {
2789 monitor_printf(mon, "\'%s\' has failed: ", cmd->name);
2790 monitor_printf(mon, "integer is for 32-bit values\n");
2791 goto fail;
2792 } else if (c == 'M') {
2793 if (val < 0) {
2794 monitor_printf(mon, "enter a positive value\n");
2795 goto fail;
2796 }
2797 val <<= 20;
2798 }
2799 qdict_put(qdict, key, qint_from_int(val));
2800 }
2801 break;
2802 case 'o':
2803 {
2804 int ret;
2805 uint64_t val;
2806 char *end;
2807
2808 while (qemu_isspace(*p)) {
2809 p++;
2810 }
2811 if (*typestr == '?') {
2812 typestr++;
2813 if (*p == '\0') {
2814 break;
2815 }
2816 }
2817 ret = qemu_strtosz_MiB(p, &end, &val);
2818 if (ret < 0 || val > INT64_MAX) {
2819 monitor_printf(mon, "invalid size\n");
2820 goto fail;
2821 }
2822 qdict_put(qdict, key, qint_from_int(val));
2823 p = end;
2824 }
2825 break;
2826 case 'T':
2827 {
2828 double val;
2829
2830 while (qemu_isspace(*p))
2831 p++;
2832 if (*typestr == '?') {
2833 typestr++;
2834 if (*p == '\0') {
2835 break;
2836 }
2837 }
2838 if (get_double(mon, &val, &p) < 0) {
2839 goto fail;
2840 }
2841 if (p[0] && p[1] == 's') {
2842 switch (*p) {
2843 case 'm':
2844 val /= 1e3; p += 2; break;
2845 case 'u':
2846 val /= 1e6; p += 2; break;
2847 case 'n':
2848 val /= 1e9; p += 2; break;
2849 }
2850 }
2851 if (*p && !qemu_isspace(*p)) {
2852 monitor_printf(mon, "Unknown unit suffix\n");
2853 goto fail;
2854 }
2855 qdict_put(qdict, key, qfloat_from_double(val));
2856 }
2857 break;
2858 case 'b':
2859 {
2860 const char *beg;
2861 bool val;
2862
2863 while (qemu_isspace(*p)) {
2864 p++;
2865 }
2866 beg = p;
2867 while (qemu_isgraph(*p)) {
2868 p++;
2869 }
2870 if (p - beg == 2 && !memcmp(beg, "on", p - beg)) {
2871 val = true;
2872 } else if (p - beg == 3 && !memcmp(beg, "off", p - beg)) {
2873 val = false;
2874 } else {
2875 monitor_printf(mon, "Expected 'on' or 'off'\n");
2876 goto fail;
2877 }
2878 qdict_put(qdict, key, qbool_from_bool(val));
2879 }
2880 break;
2881 case '-':
2882 {
2883 const char *tmp = p;
2884 int skip_key = 0;
2885 /* option */
2886
2887 c = *typestr++;
2888 if (c == '\0')
2889 goto bad_type;
2890 while (qemu_isspace(*p))
2891 p++;
2892 if (*p == '-') {
2893 p++;
2894 if(c != *p) {
2895 if(!is_valid_option(p, typestr)) {
2896
2897 monitor_printf(mon, "%s: unsupported option -%c\n",
2898 cmd->name, *p);
2899 goto fail;
2900 } else {
2901 skip_key = 1;
2902 }
2903 }
2904 if(skip_key) {
2905 p = tmp;
2906 } else {
2907 /* has option */
2908 p++;
2909 qdict_put(qdict, key, qbool_from_bool(true));
2910 }
2911 }
2912 }
2913 break;
2914 case 'S':
2915 {
2916 /* package all remaining string */
2917 int len;
2918
2919 while (qemu_isspace(*p)) {
2920 p++;
2921 }
2922 if (*typestr == '?') {
2923 typestr++;
2924 if (*p == '\0') {
2925 /* no remaining string: NULL argument */
2926 break;
2927 }
2928 }
2929 len = strlen(p);
2930 if (len <= 0) {
2931 monitor_printf(mon, "%s: string expected\n",
2932 cmd->name);
2933 goto fail;
2934 }
2935 qdict_put(qdict, key, qstring_from_str(p));
2936 p += len;
2937 }
2938 break;
2939 default:
2940 bad_type:
2941 monitor_printf(mon, "%s: unknown type '%c'\n", cmd->name, c);
2942 goto fail;
2943 }
2944 g_free(key);
2945 key = NULL;
2946 }
2947 /* check that all arguments were parsed */
2948 while (qemu_isspace(*p))
2949 p++;
2950 if (*p != '\0') {
2951 monitor_printf(mon, "%s: extraneous characters at the end of line\n",
2952 cmd->name);
2953 goto fail;
2954 }
2955
2956 return qdict;
2957
2958 fail:
2959 QDECREF(qdict);
2960 g_free(key);
2961 return NULL;
2962 }
2963
2964 static void handle_hmp_command(Monitor *mon, const char *cmdline)
2965 {
2966 QDict *qdict;
2967 const mon_cmd_t *cmd;
2968
2969 cmd = monitor_parse_command(mon, &cmdline, mon->cmd_table);
2970 if (!cmd) {
2971 return;
2972 }
2973
2974 qdict = monitor_parse_arguments(mon, &cmdline, cmd);
2975 if (!qdict) {
2976 monitor_printf(mon, "Try \"help %s\" for more information\n",
2977 cmd->name);
2978 return;
2979 }
2980
2981 cmd->cmd(mon, qdict);
2982 QDECREF(qdict);
2983 }
2984
2985 static void cmd_completion(Monitor *mon, const char *name, const char *list)
2986 {
2987 const char *p, *pstart;
2988 char cmd[128];
2989 int len;
2990
2991 p = list;
2992 for(;;) {
2993 pstart = p;
2994 p = strchr(p, '|');
2995 if (!p)
2996 p = pstart + strlen(pstart);
2997 len = p - pstart;
2998 if (len > sizeof(cmd) - 2)
2999 len = sizeof(cmd) - 2;
3000 memcpy(cmd, pstart, len);
3001 cmd[len] = '\0';
3002 if (name[0] == '\0' || !strncmp(name, cmd, strlen(name))) {
3003 readline_add_completion(mon->rs, cmd);
3004 }
3005 if (*p == '\0')
3006 break;
3007 p++;
3008 }
3009 }
3010
3011 static void file_completion(Monitor *mon, const char *input)
3012 {
3013 DIR *ffs;
3014 struct dirent *d;
3015 char path[1024];
3016 char file[1024], file_prefix[1024];
3017 int input_path_len;
3018 const char *p;
3019
3020 p = strrchr(input, '/');
3021 if (!p) {
3022 input_path_len = 0;
3023 pstrcpy(file_prefix, sizeof(file_prefix), input);
3024 pstrcpy(path, sizeof(path), ".");
3025 } else {
3026 input_path_len = p - input + 1;
3027 memcpy(path, input, input_path_len);
3028 if (input_path_len > sizeof(path) - 1)
3029 input_path_len = sizeof(path) - 1;
3030 path[input_path_len] = '\0';
3031 pstrcpy(file_prefix, sizeof(file_prefix), p + 1);
3032 }
3033
3034 ffs = opendir(path);
3035 if (!ffs)
3036 return;
3037 for(;;) {
3038 struct stat sb;
3039 d = readdir(ffs);
3040 if (!d)
3041 break;
3042
3043 if (strcmp(d->d_name, ".") == 0 || strcmp(d->d_name, "..") == 0) {
3044 continue;
3045 }
3046
3047 if (strstart(d->d_name, file_prefix, NULL)) {
3048 memcpy(file, input, input_path_len);
3049 if (input_path_len < sizeof(file))
3050 pstrcpy(file + input_path_len, sizeof(file) - input_path_len,
3051 d->d_name);
3052 /* stat the file to find out if it's a directory.
3053 * In that case add a slash to speed up typing long paths
3054 */
3055 if (stat(file, &sb) == 0 && S_ISDIR(sb.st_mode)) {
3056 pstrcat(file, sizeof(file), "/");
3057 }
3058 readline_add_completion(mon->rs, file);
3059 }
3060 }
3061 closedir(ffs);
3062 }
3063
3064 static const char *next_arg_type(const char *typestr)
3065 {
3066 const char *p = strchr(typestr, ':');
3067 return (p != NULL ? ++p : typestr);
3068 }
3069
3070 static void add_completion_option(ReadLineState *rs, const char *str,
3071 const char *option)
3072 {
3073 if (!str || !option) {
3074 return;
3075 }
3076 if (!strncmp(option, str, strlen(str))) {
3077 readline_add_completion(rs, option);
3078 }
3079 }
3080
3081 void chardev_add_completion(ReadLineState *rs, int nb_args, const char *str)
3082 {
3083 size_t len;
3084 ChardevBackendInfoList *list, *start;
3085
3086 if (nb_args != 2) {
3087 return;
3088 }
3089 len = strlen(str);
3090 readline_set_completion_index(rs, len);
3091
3092 start = list = qmp_query_chardev_backends(NULL);
3093 while (list) {
3094 const char *chr_name = list->value->name;
3095
3096 if (!strncmp(chr_name, str, len)) {
3097 readline_add_completion(rs, chr_name);
3098 }
3099 list = list->next;
3100 }
3101 qapi_free_ChardevBackendInfoList(start);
3102 }
3103
3104 void netdev_add_completion(ReadLineState *rs, int nb_args, const char *str)
3105 {
3106 size_t len;
3107 int i;
3108
3109 if (nb_args != 2) {
3110 return;
3111 }
3112 len = strlen(str);
3113 readline_set_completion_index(rs, len);
3114 for (i = 0; NetClientDriver_lookup[i]; i++) {
3115 add_completion_option(rs, str, NetClientDriver_lookup[i]);
3116 }
3117 }
3118
3119 void device_add_completion(ReadLineState *rs, int nb_args, const char *str)
3120 {
3121 GSList *list, *elt;
3122 size_t len;
3123
3124 if (nb_args != 2) {
3125 return;
3126 }
3127
3128 len = strlen(str);
3129 readline_set_completion_index(rs, len);
3130 list = elt = object_class_get_list(TYPE_DEVICE, false);
3131 while (elt) {
3132 const char *name;
3133 DeviceClass *dc = OBJECT_CLASS_CHECK(DeviceClass, elt->data,
3134 TYPE_DEVICE);
3135 name = object_class_get_name(OBJECT_CLASS(dc));
3136
3137 if (!dc->cannot_instantiate_with_device_add_yet
3138 && !strncmp(name, str, len)) {
3139 readline_add_completion(rs, name);
3140 }
3141 elt = elt->next;
3142 }
3143 g_slist_free(list);
3144 }
3145
3146 void object_add_completion(ReadLineState *rs, int nb_args, const char *str)
3147 {
3148 GSList *list, *elt;
3149 size_t len;
3150
3151 if (nb_args != 2) {
3152 return;
3153 }
3154
3155 len = strlen(str);
3156 readline_set_completion_index(rs, len);
3157 list = elt = object_class_get_list(TYPE_USER_CREATABLE, false);
3158 while (elt) {
3159 const char *name;
3160
3161 name = object_class_get_name(OBJECT_CLASS(elt->data));
3162 if (!strncmp(name, str, len) && strcmp(name, TYPE_USER_CREATABLE)) {
3163 readline_add_completion(rs, name);
3164 }
3165 elt = elt->next;
3166 }
3167 g_slist_free(list);
3168 }
3169
3170 static void peripheral_device_del_completion(ReadLineState *rs,
3171 const char *str, size_t len)
3172 {
3173 Object *peripheral = container_get(qdev_get_machine(), "/peripheral");
3174 GSList *list, *item;
3175
3176 list = qdev_build_hotpluggable_device_list(peripheral);
3177 if (!list) {
3178 return;
3179 }
3180
3181 for (item = list; item; item = g_slist_next(item)) {
3182 DeviceState *dev = item->data;
3183
3184 if (dev->id && !strncmp(str, dev->id, len)) {
3185 readline_add_completion(rs, dev->id);
3186 }
3187 }
3188
3189 g_slist_free(list);
3190 }
3191
3192 void chardev_remove_completion(ReadLineState *rs, int nb_args, const char *str)
3193 {
3194 size_t len;
3195 ChardevInfoList *list, *start;
3196
3197 if (nb_args != 2) {
3198 return;
3199 }
3200 len = strlen(str);
3201 readline_set_completion_index(rs, len);
3202
3203 start = list = qmp_query_chardev(NULL);
3204 while (list) {
3205 ChardevInfo *chr = list->value;
3206
3207 if (!strncmp(chr->label, str, len)) {
3208 readline_add_completion(rs, chr->label);
3209 }
3210 list = list->next;
3211 }
3212 qapi_free_ChardevInfoList(start);
3213 }
3214
3215 static void ringbuf_completion(ReadLineState *rs, const char *str)
3216 {
3217 size_t len;
3218 ChardevInfoList *list, *start;
3219
3220 len = strlen(str);
3221 readline_set_completion_index(rs, len);
3222
3223 start = list = qmp_query_chardev(NULL);
3224 while (list) {
3225 ChardevInfo *chr_info = list->value;
3226
3227 if (!strncmp(chr_info->label, str, len)) {
3228 Chardev *chr = qemu_chr_find(chr_info->label);
3229 if (chr && CHARDEV_IS_RINGBUF(chr)) {
3230 readline_add_completion(rs, chr_info->label);
3231 }
3232 }
3233 list = list->next;
3234 }
3235 qapi_free_ChardevInfoList(start);
3236 }
3237
3238 void ringbuf_write_completion(ReadLineState *rs, int nb_args, const char *str)
3239 {
3240 if (nb_args != 2) {
3241 return;
3242 }
3243 ringbuf_completion(rs, str);
3244 }
3245
3246 void device_del_completion(ReadLineState *rs, int nb_args, const char *str)
3247 {
3248 size_t len;
3249
3250 if (nb_args != 2) {
3251 return;
3252 }
3253
3254 len = strlen(str);
3255 readline_set_completion_index(rs, len);
3256 peripheral_device_del_completion(rs, str, len);
3257 }
3258
3259 void object_del_completion(ReadLineState *rs, int nb_args, const char *str)
3260 {
3261 ObjectPropertyInfoList *list, *start;
3262 size_t len;
3263
3264 if (nb_args != 2) {
3265 return;
3266 }
3267 len = strlen(str);
3268 readline_set_completion_index(rs, len);
3269
3270 start = list = qmp_qom_list("/objects", NULL);
3271 while (list) {
3272 ObjectPropertyInfo *info = list->value;
3273
3274 if (!strncmp(info->type, "child<", 5)
3275 && !strncmp(info->name, str, len)) {
3276 readline_add_completion(rs, info->name);
3277 }
3278 list = list->next;
3279 }
3280 qapi_free_ObjectPropertyInfoList(start);
3281 }
3282
3283 void sendkey_completion(ReadLineState *rs, int nb_args, const char *str)
3284 {
3285 int i;
3286 char *sep;
3287 size_t len;
3288
3289 if (nb_args != 2) {
3290 return;
3291 }
3292 sep = strrchr(str, '-');
3293 if (sep) {
3294 str = sep + 1;
3295 }
3296 len = strlen(str);
3297 readline_set_completion_index(rs, len);
3298 for (i = 0; i < Q_KEY_CODE__MAX; i++) {
3299 if (!strncmp(str, QKeyCode_lookup[i], len)) {
3300 readline_add_completion(rs, QKeyCode_lookup[i]);
3301 }
3302 }
3303 }
3304
3305 void set_link_completion(ReadLineState *rs, int nb_args, const char *str)
3306 {
3307 size_t len;
3308
3309 len = strlen(str);
3310 readline_set_completion_index(rs, len);
3311 if (nb_args == 2) {
3312 NetClientState *ncs[MAX_QUEUE_NUM];
3313 int count, i;
3314 count = qemu_find_net_clients_except(NULL, ncs,
3315 NET_CLIENT_DRIVER_NONE,
3316 MAX_QUEUE_NUM);
3317 for (i = 0; i < MIN(count, MAX_QUEUE_NUM); i++) {
3318 const char *name = ncs[i]->name;
3319 if (!strncmp(str, name, len)) {
3320 readline_add_completion(rs, name);
3321 }
3322 }
3323 } else if (nb_args == 3) {
3324 add_completion_option(rs, str, "on");
3325 add_completion_option(rs, str, "off");
3326 }
3327 }
3328
3329 void netdev_del_completion(ReadLineState *rs, int nb_args, const char *str)
3330 {
3331 int len, count, i;
3332 NetClientState *ncs[MAX_QUEUE_NUM];
3333
3334 if (nb_args != 2) {
3335 return;
3336 }
3337
3338 len = strlen(str);
3339 readline_set_completion_index(rs, len);
3340 count = qemu_find_net_clients_except(NULL, ncs, NET_CLIENT_DRIVER_NIC,
3341 MAX_QUEUE_NUM);
3342 for (i = 0; i < MIN(count, MAX_QUEUE_NUM); i++) {
3343 QemuOpts *opts;
3344 const char *name = ncs[i]->name;
3345 if (strncmp(str, name, len)) {
3346 continue;
3347 }
3348 opts = qemu_opts_find(qemu_find_opts_err("netdev", NULL), name);
3349 if (opts) {
3350 readline_add_completion(rs, name);
3351 }
3352 }
3353 }
3354
3355 void info_trace_events_completion(ReadLineState *rs, int nb_args, const char *str)
3356 {
3357 size_t len;
3358
3359 len = strlen(str);
3360 readline_set_completion_index(rs, len);
3361 if (nb_args == 2) {
3362 TraceEventIter iter;
3363 TraceEvent *ev;
3364 char *pattern = g_strdup_printf("%s*", str);
3365 trace_event_iter_init(&iter, pattern);
3366 while ((ev = trace_event_iter_next(&iter)) != NULL) {
3367 readline_add_completion(rs, trace_event_get_name(ev));
3368 }
3369 g_free(pattern);
3370 }
3371 }
3372
3373 void trace_event_completion(ReadLineState *rs, int nb_args, const char *str)
3374 {
3375 size_t len;
3376
3377 len = strlen(str);
3378 readline_set_completion_index(rs, len);
3379 if (nb_args == 2) {
3380 TraceEventIter iter;
3381 TraceEvent *ev;
3382 char *pattern = g_strdup_printf("%s*", str);
3383 trace_event_iter_init(&iter, pattern);
3384 while ((ev = trace_event_iter_next(&iter)) != NULL) {
3385 readline_add_completion(rs, trace_event_get_name(ev));
3386 }
3387 g_free(pattern);
3388 } else if (nb_args == 3) {
3389 add_completion_option(rs, str, "on");
3390 add_completion_option(rs, str, "off");
3391 }
3392 }
3393
3394 void watchdog_action_completion(ReadLineState *rs, int nb_args, const char *str)
3395 {
3396 int i;
3397
3398 if (nb_args != 2) {
3399 return;
3400 }
3401 readline_set_completion_index(rs, strlen(str));
3402 for (i = 0; WatchdogExpirationAction_lookup[i]; i++) {
3403 add_completion_option(rs, str, WatchdogExpirationAction_lookup[i]);
3404 }
3405 }
3406
3407 void migrate_set_capability_completion(ReadLineState *rs, int nb_args,
3408 const char *str)
3409 {
3410 size_t len;
3411
3412 len = strlen(str);
3413 readline_set_completion_index(rs, len);
3414 if (nb_args == 2) {
3415 int i;
3416 for (i = 0; i < MIGRATION_CAPABILITY__MAX; i++) {
3417 const char *name = MigrationCapability_lookup[i];
3418 if (!strncmp(str, name, len)) {
3419 readline_add_completion(rs, name);
3420 }
3421 }
3422 } else if (nb_args == 3) {
3423 add_completion_option(rs, str, "on");
3424 add_completion_option(rs, str, "off");
3425 }
3426 }
3427
3428 void migrate_set_parameter_completion(ReadLineState *rs, int nb_args,
3429 const char *str)
3430 {
3431 size_t len;
3432
3433 len = strlen(str);
3434 readline_set_completion_index(rs, len);
3435 if (nb_args == 2) {
3436 int i;
3437 for (i = 0; i < MIGRATION_PARAMETER__MAX; i++) {
3438 const char *name = MigrationParameter_lookup[i];
3439 if (!strncmp(str, name, len)) {
3440 readline_add_completion(rs, name);
3441 }
3442 }
3443 }
3444 }
3445
3446 void host_net_add_completion(ReadLineState *rs, int nb_args, const char *str)
3447 {
3448 int i;
3449 size_t len;
3450 if (nb_args != 2) {
3451 return;
3452 }
3453 len = strlen(str);
3454 readline_set_completion_index(rs, len);
3455 for (i = 0; host_net_devices[i]; i++) {
3456 if (!strncmp(host_net_devices[i], str, len)) {
3457 readline_add_completion(rs, host_net_devices[i]);
3458 }
3459 }
3460 }
3461
3462 void host_net_remove_completion(ReadLineState *rs, int nb_args, const char *str)
3463 {
3464 NetClientState *ncs[MAX_QUEUE_NUM];
3465 int count, i, len;
3466
3467 len = strlen(str);
3468 readline_set_completion_index(rs, len);
3469 if (nb_args == 2) {
3470 count = qemu_find_net_clients_except(NULL, ncs,
3471 NET_CLIENT_DRIVER_NONE,
3472 MAX_QUEUE_NUM);
3473 for (i = 0; i < MIN(count, MAX_QUEUE_NUM); i++) {
3474 int id;
3475 char name[16];
3476
3477 if (net_hub_id_for_client(ncs[i], &id)) {
3478 continue;
3479 }
3480 snprintf(name, sizeof(name), "%d", id);
3481 if (!strncmp(str, name, len)) {
3482 readline_add_completion(rs, name);
3483 }
3484 }
3485 return;
3486 } else if (nb_args == 3) {
3487 count = qemu_find_net_clients_except(NULL, ncs,
3488 NET_CLIENT_DRIVER_NIC,
3489 MAX_QUEUE_NUM);
3490 for (i = 0; i < MIN(count, MAX_QUEUE_NUM); i++) {
3491 int id;
3492 const char *name;
3493
3494 if (ncs[i]->info->type == NET_CLIENT_DRIVER_HUBPORT ||
3495 net_hub_id_for_client(ncs[i], &id)) {
3496 continue;
3497 }
3498 name = ncs[i]->name;
3499 if (!strncmp(str, name, len)) {
3500 readline_add_completion(rs, name);
3501 }
3502 }
3503 return;
3504 }
3505 }
3506
3507 static void vm_completion(ReadLineState *rs, const char *str)
3508 {
3509 size_t len;
3510 BlockDriverState *bs;
3511 BdrvNextIterator it;
3512
3513 len = strlen(str);
3514 readline_set_completion_index(rs, len);
3515
3516 for (bs = bdrv_first(&it); bs; bs = bdrv_next(&it)) {
3517 SnapshotInfoList *snapshots, *snapshot;
3518 AioContext *ctx = bdrv_get_aio_context(bs);
3519 bool ok = false;
3520
3521 aio_context_acquire(ctx);
3522 if (bdrv_can_snapshot(bs)) {
3523 ok = bdrv_query_snapshot_info_list(bs, &snapshots, NULL) == 0;
3524 }
3525 aio_context_release(ctx);
3526 if (!ok) {
3527 continue;
3528 }
3529
3530 snapshot = snapshots;
3531 while (snapshot) {
3532 char *completion = snapshot->value->name;
3533 if (!strncmp(str, completion, len)) {
3534 readline_add_completion(rs, completion);
3535 }
3536 completion = snapshot->value->id;
3537 if (!strncmp(str, completion, len)) {
3538 readline_add_completion(rs, completion);
3539 }
3540 snapshot = snapshot->next;
3541 }
3542 qapi_free_SnapshotInfoList(snapshots);
3543 }
3544
3545 }
3546
3547 void delvm_completion(ReadLineState *rs, int nb_args, const char *str)
3548 {
3549 if (nb_args == 2) {
3550 vm_completion(rs, str);
3551 }
3552 }
3553
3554 void loadvm_completion(ReadLineState *rs, int nb_args, const char *str)
3555 {
3556 if (nb_args == 2) {
3557 vm_completion(rs, str);
3558 }
3559 }
3560
3561 static void monitor_find_completion_by_table(Monitor *mon,
3562 const mon_cmd_t *cmd_table,
3563 char **args,
3564 int nb_args)
3565 {
3566 const char *cmdname;
3567 int i;
3568 const char *ptype, *str, *name;
3569 const mon_cmd_t *cmd;
3570 BlockBackend *blk = NULL;
3571
3572 if (nb_args <= 1) {
3573 /* command completion */
3574 if (nb_args == 0)
3575 cmdname = "";
3576 else
3577 cmdname = args[0];
3578 readline_set_completion_index(mon->rs, strlen(cmdname));
3579 for (cmd = cmd_table; cmd->name != NULL; cmd++) {
3580 cmd_completion(mon, cmdname, cmd->name);
3581 }
3582 } else {
3583 /* find the command */
3584 for (cmd = cmd_table; cmd->name != NULL; cmd++) {
3585 if (compare_cmd(args[0], cmd->name)) {
3586 break;
3587 }
3588 }
3589 if (!cmd->name) {
3590 return;
3591 }
3592
3593 if (cmd->sub_table) {
3594 /* do the job again */
3595 monitor_find_completion_by_table(mon, cmd->sub_table,
3596 &args[1], nb_args - 1);
3597 return;
3598 }
3599 if (cmd->command_completion) {
3600 cmd->command_completion(mon->rs, nb_args, args[nb_args - 1]);
3601 return;
3602 }
3603
3604 ptype = next_arg_type(cmd->args_type);
3605 for(i = 0; i < nb_args - 2; i++) {
3606 if (*ptype != '\0') {
3607 ptype = next_arg_type(ptype);
3608 while (*ptype == '?')
3609 ptype = next_arg_type(ptype);
3610 }
3611 }
3612 str = args[nb_args - 1];
3613 while (*ptype == '-' && ptype[1] != '\0') {
3614 ptype = next_arg_type(ptype);
3615 }
3616 switch(*ptype) {
3617 case 'F':
3618 /* file completion */
3619 readline_set_completion_index(mon->rs, strlen(str));
3620 file_completion(mon, str);
3621 break;
3622 case 'B':
3623 /* block device name completion */
3624 readline_set_completion_index(mon->rs, strlen(str));
3625 while ((blk = blk_next(blk)) != NULL) {
3626 name = blk_name(blk);
3627 if (str[0] == '\0' ||
3628 !strncmp(name, str, strlen(str))) {
3629 readline_add_completion(mon->rs, name);
3630 }
3631 }
3632 break;
3633 case 's':
3634 case 'S':
3635 if (!strcmp(cmd->name, "help|?")) {
3636 monitor_find_completion_by_table(mon, cmd_table,
3637 &args[1], nb_args - 1);
3638 }
3639 break;
3640 default:
3641 break;
3642 }
3643 }
3644 }
3645
3646 static void monitor_find_completion(void *opaque,
3647 const char *cmdline)
3648 {
3649 Monitor *mon = opaque;
3650 char *args[MAX_ARGS];
3651 int nb_args, len;
3652
3653 /* 1. parse the cmdline */
3654 if (parse_cmdline(cmdline, &nb_args, args) < 0) {
3655 return;
3656 }
3657
3658 /* if the line ends with a space, it means we want to complete the
3659 next arg */
3660 len = strlen(cmdline);
3661 if (len > 0 && qemu_isspace(cmdline[len - 1])) {
3662 if (nb_args >= MAX_ARGS) {
3663 goto cleanup;
3664 }
3665 args[nb_args++] = g_strdup("");
3666 }
3667
3668 /* 2. auto complete according to args */
3669 monitor_find_completion_by_table(mon, mon->cmd_table, args, nb_args);
3670
3671 cleanup:
3672 free_cmdline_args(args, nb_args);
3673 }
3674
3675 static int monitor_can_read(void *opaque)
3676 {
3677 Monitor *mon = opaque;
3678
3679 return (mon->suspend_cnt == 0) ? 1 : 0;
3680 }
3681
3682 static bool invalid_qmp_mode(const Monitor *mon, const char *cmd,
3683 Error **errp)
3684 {
3685 bool is_cap = g_str_equal(cmd, "qmp_capabilities");
3686
3687 if (is_cap && mon->qmp.in_command_mode) {
3688 error_set(errp, ERROR_CLASS_COMMAND_NOT_FOUND,
3689 "Capabilities negotiation is already complete, command "
3690 "'%s' ignored", cmd);
3691 return true;
3692 }
3693 if (!is_cap && !mon->qmp.in_command_mode) {
3694 error_set(errp, ERROR_CLASS_COMMAND_NOT_FOUND,
3695 "Expecting capabilities negotiation with "
3696 "'qmp_capabilities' before command '%s'", cmd);
3697 return true;
3698 }
3699 return false;
3700 }
3701
3702 /*
3703 * Input object checking rules
3704 *
3705 * 1. Input object must be a dict
3706 * 2. The "execute" key must exist
3707 * 3. The "execute" key must be a string
3708 * 4. If the "arguments" key exists, it must be a dict
3709 * 5. If the "id" key exists, it can be anything (ie. json-value)
3710 * 6. Any argument not listed above is considered invalid
3711 */
3712 static QDict *qmp_check_input_obj(QObject *input_obj, Error **errp)
3713 {
3714 const QDictEntry *ent;
3715 int has_exec_key = 0;
3716 QDict *input_dict;
3717
3718 input_dict = qobject_to_qdict(input_obj);
3719 if (!input_dict) {
3720 error_setg(errp, QERR_QMP_BAD_INPUT_OBJECT, "object");
3721 return NULL;
3722 }
3723
3724
3725 for (ent = qdict_first(input_dict); ent; ent = qdict_next(input_dict, ent)){
3726 const char *arg_name = qdict_entry_key(ent);
3727 const QObject *arg_obj = qdict_entry_value(ent);
3728
3729 if (!strcmp(arg_name, "execute")) {
3730 if (qobject_type(arg_obj) != QTYPE_QSTRING) {
3731 error_setg(errp, QERR_QMP_BAD_INPUT_OBJECT_MEMBER,
3732 "execute", "string");
3733 return NULL;
3734 }
3735 has_exec_key = 1;
3736 } else if (!strcmp(arg_name, "arguments")) {
3737 if (qobject_type(arg_obj) != QTYPE_QDICT) {
3738 error_setg(errp, QERR_QMP_BAD_INPUT_OBJECT_MEMBER,
3739 "arguments", "object");
3740 return NULL;
3741 }
3742 } else if (!strcmp(arg_name, "id")) {
3743 /* Any string is acceptable as "id", so nothing to check */
3744 } else {
3745 error_setg(errp, QERR_QMP_EXTRA_MEMBER, arg_name);
3746 return NULL;
3747 }
3748 }
3749
3750 if (!has_exec_key) {
3751 error_setg(errp, QERR_QMP_BAD_INPUT_OBJECT, "execute");
3752 return NULL;
3753 }
3754
3755 return input_dict;
3756 }
3757
3758 static void handle_qmp_command(JSONMessageParser *parser, GQueue *tokens)
3759 {
3760 QObject *req, *rsp = NULL, *id = NULL;
3761 QDict *qdict = NULL;
3762 const char *cmd_name;
3763 Monitor *mon = cur_mon;
3764 Error *err = NULL;
3765
3766 req = json_parser_parse_err(tokens, NULL, &err);
3767 if (!req && !err) {
3768 /* json_parser_parse_err() sucks: can fail without setting @err */
3769 error_setg(&err, QERR_JSON_PARSING);
3770 }
3771 if (err) {
3772 goto err_out;
3773 }
3774
3775 qdict = qmp_check_input_obj(req, &err);
3776 if (!qdict) {
3777 goto err_out;
3778 }
3779
3780 id = qdict_get(qdict, "id");
3781 qobject_incref(id);
3782 qdict_del(qdict, "id");
3783
3784 cmd_name = qdict_get_str(qdict, "execute");
3785 trace_handle_qmp_command(mon, cmd_name);
3786
3787 if (invalid_qmp_mode(mon, cmd_name, &err)) {
3788 goto err_out;
3789 }
3790
3791 rsp = qmp_dispatch(req);
3792
3793 err_out:
3794 if (err) {
3795 qdict = qdict_new();
3796 qdict_put_obj(qdict, "error", qmp_build_error_object(err));
3797 error_free(err);
3798 rsp = QOBJECT(qdict);
3799 }
3800
3801 if (rsp) {
3802 if (id) {
3803 qdict_put_obj(qobject_to_qdict(rsp), "id", id);
3804 id = NULL;
3805 }
3806
3807 monitor_json_emitter(mon, rsp);
3808 }
3809
3810 qobject_decref(id);
3811 qobject_decref(rsp);
3812 qobject_decref(req);
3813 }
3814
3815 static void monitor_qmp_read(void *opaque, const uint8_t *buf, int size)
3816 {
3817 Monitor *old_mon = cur_mon;
3818
3819 cur_mon = opaque;
3820
3821 json_message_parser_feed(&cur_mon->qmp.parser, (const char *) buf, size);
3822
3823 cur_mon = old_mon;
3824 }
3825
3826 static void monitor_read(void *opaque, const uint8_t *buf, int size)
3827 {
3828 Monitor *old_mon = cur_mon;
3829 int i;
3830
3831 cur_mon = opaque;
3832
3833 if (cur_mon->rs) {
3834 for (i = 0; i < size; i++)
3835 readline_handle_byte(cur_mon->rs, buf[i]);
3836 } else {
3837 if (size == 0 || buf[size - 1] != 0)
3838 monitor_printf(cur_mon, "corrupted command\n");
3839 else
3840 handle_hmp_command(cur_mon, (char *)buf);
3841 }
3842
3843 cur_mon = old_mon;
3844 }
3845
3846 static void monitor_command_cb(void *opaque, const char *cmdline,
3847 void *readline_opaque)
3848 {
3849 Monitor *mon = opaque;
3850
3851 monitor_suspend(mon);
3852 handle_hmp_command(mon, cmdline);
3853 monitor_resume(mon);
3854 }
3855
3856 int monitor_suspend(Monitor *mon)
3857 {
3858 if (!mon->rs)
3859 return -ENOTTY;
3860 mon->suspend_cnt++;
3861 return 0;
3862 }
3863
3864 void monitor_resume(Monitor *mon)
3865 {
3866 if (!mon->rs)
3867 return;
3868 if (--mon->suspend_cnt == 0)
3869 readline_show_prompt(mon->rs);
3870 }
3871
3872 static QObject *get_qmp_greeting(void)
3873 {
3874 QObject *ver = NULL;
3875
3876 qmp_marshal_query_version(NULL, &ver, NULL);
3877
3878 return qobject_from_jsonf("{'QMP': {'version': %p, 'capabilities': []}}",
3879 ver);
3880 }
3881
3882 static void monitor_qmp_event(void *opaque, int event)
3883 {
3884 QObject *data;
3885 Monitor *mon = opaque;
3886
3887 switch (event) {
3888 case CHR_EVENT_OPENED:
3889 mon->qmp.in_command_mode = false;
3890 data = get_qmp_greeting();
3891 monitor_json_emitter(mon, data);
3892 qobject_decref(data);
3893 mon_refcount++;
3894 break;
3895 case CHR_EVENT_CLOSED:
3896 json_message_parser_destroy(&mon->qmp.parser);
3897 json_message_parser_init(&mon->qmp.parser, handle_qmp_command);
3898 mon_refcount--;
3899 monitor_fdsets_cleanup();
3900 break;
3901 }
3902 }
3903
3904 static void monitor_event(void *opaque, int event)
3905 {
3906 Monitor *mon = opaque;
3907
3908 switch (event) {
3909 case CHR_EVENT_MUX_IN:
3910 qemu_mutex_lock(&mon->out_lock);
3911 mon->mux_out = 0;
3912 qemu_mutex_unlock(&mon->out_lock);
3913 if (mon->reset_seen) {
3914 readline_restart(mon->rs);
3915 monitor_resume(mon);
3916 monitor_flush(mon);
3917 } else {
3918 mon->suspend_cnt = 0;
3919 }
3920 break;
3921
3922 case CHR_EVENT_MUX_OUT:
3923 if (mon->reset_seen) {
3924 if (mon->suspend_cnt == 0) {
3925 monitor_printf(mon, "\n");
3926 }
3927 monitor_flush(mon);
3928 monitor_suspend(mon);
3929 } else {
3930 mon->suspend_cnt++;
3931 }
3932 qemu_mutex_lock(&mon->out_lock);
3933 mon->mux_out = 1;
3934 qemu_mutex_unlock(&mon->out_lock);
3935 break;
3936
3937 case CHR_EVENT_OPENED:
3938 monitor_printf(mon, "QEMU %s monitor - type 'help' for more "
3939 "information\n", QEMU_VERSION);
3940 if (!mon->mux_out) {
3941 readline_restart(mon->rs);
3942 readline_show_prompt(mon->rs);
3943 }
3944 mon->reset_seen = 1;
3945 mon_refcount++;
3946 break;
3947
3948 case CHR_EVENT_CLOSED:
3949 mon_refcount--;
3950 monitor_fdsets_cleanup();
3951 break;
3952 }
3953 }
3954
3955 static int
3956 compare_mon_cmd(const void *a, const void *b)
3957 {
3958 return strcmp(((const mon_cmd_t *)a)->name,
3959 ((const mon_cmd_t *)b)->name);
3960 }
3961
3962 static void sortcmdlist(void)
3963 {
3964 int array_num;
3965 int elem_size = sizeof(mon_cmd_t);
3966
3967 array_num = sizeof(mon_cmds)/elem_size-1;
3968 qsort((void *)mon_cmds, array_num, elem_size, compare_mon_cmd);
3969
3970 array_num = sizeof(info_cmds)/elem_size-1;
3971 qsort((void *)info_cmds, array_num, elem_size, compare_mon_cmd);
3972 }
3973
3974 /* These functions just adapt the readline interface in a typesafe way. We
3975 * could cast function pointers but that discards compiler checks.
3976 */
3977 static void GCC_FMT_ATTR(2, 3) monitor_readline_printf(void *opaque,
3978 const char *fmt, ...)
3979 {
3980 va_list ap;
3981 va_start(ap, fmt);
3982 monitor_vprintf(opaque, fmt, ap);
3983 va_end(ap);
3984 }
3985
3986 static void monitor_readline_flush(void *opaque)
3987 {
3988 monitor_flush(opaque);
3989 }
3990
3991 /*
3992 * Print to current monitor if we have one, else to stderr.
3993 * TODO should return int, so callers can calculate width, but that
3994 * requires surgery to monitor_vprintf(). Left for another day.
3995 */
3996 void error_vprintf(const char *fmt, va_list ap)
3997 {
3998 if (cur_mon && !monitor_cur_is_qmp()) {
3999 monitor_vprintf(cur_mon, fmt, ap);
4000 } else {
4001 vfprintf(stderr, fmt, ap);
4002 }
4003 }
4004
4005 void error_vprintf_unless_qmp(const char *fmt, va_list ap)
4006 {
4007 if (cur_mon && !monitor_cur_is_qmp()) {
4008 monitor_vprintf(cur_mon, fmt, ap);
4009 } else if (!cur_mon) {
4010 vfprintf(stderr, fmt, ap);
4011 }
4012 }
4013
4014 static void __attribute__((constructor)) monitor_lock_init(void)
4015 {
4016 qemu_mutex_init(&monitor_lock);
4017 }
4018
4019 void monitor_init(Chardev *chr, int flags)
4020 {
4021 static int is_first_init = 1;
4022 Monitor *mon;
4023
4024 if (is_first_init) {
4025 monitor_qapi_event_init();
4026 sortcmdlist();
4027 is_first_init = 0;
4028 }
4029
4030 mon = g_malloc(sizeof(*mon));
4031 monitor_data_init(mon);
4032
4033 qemu_chr_fe_init(&mon->chr, chr, &error_abort);
4034 mon->flags = flags;
4035 if (flags & MONITOR_USE_READLINE) {
4036 mon->rs = readline_init(monitor_readline_printf,
4037 monitor_readline_flush,
4038 mon,
4039 monitor_find_completion);
4040 monitor_read_command(mon, 0);
4041 }
4042
4043 if (monitor_is_qmp(mon)) {
4044 qemu_chr_fe_set_handlers(&mon->chr, monitor_can_read, monitor_qmp_read,
4045 monitor_qmp_event, mon, NULL, true);
4046 qemu_chr_fe_set_echo(&mon->chr, true);
4047 json_message_parser_init(&mon->qmp.parser, handle_qmp_command);
4048 } else {
4049 qemu_chr_fe_set_handlers(&mon->chr, monitor_can_read, monitor_read,
4050 monitor_event, mon, NULL, true);
4051 }
4052
4053 qemu_mutex_lock(&monitor_lock);
4054 QLIST_INSERT_HEAD(&mon_list, mon, entry);
4055 qemu_mutex_unlock(&monitor_lock);
4056 }
4057
4058 void monitor_cleanup(void)
4059 {
4060 Monitor *mon, *next;
4061
4062 qemu_mutex_lock(&monitor_lock);
4063 QLIST_FOREACH_SAFE(mon, &mon_list, entry, next) {
4064 QLIST_REMOVE(mon, entry);
4065 monitor_data_destroy(mon);
4066 g_free(mon);
4067 }
4068 qemu_mutex_unlock(&monitor_lock);
4069 }
4070
4071 static void bdrv_password_cb(void *opaque, const char *password,
4072 void *readline_opaque)
4073 {
4074 Monitor *mon = opaque;
4075 BlockDriverState *bs = readline_opaque;
4076 int ret = 0;
4077 Error *local_err = NULL;
4078
4079 bdrv_add_key(bs, password, &local_err);
4080 if (local_err) {
4081 error_report_err(local_err);
4082 ret = -EPERM;
4083 }
4084 if (mon->password_completion_cb)
4085 mon->password_completion_cb(mon->password_opaque, ret);
4086
4087 monitor_read_command(mon, 1);
4088 }
4089
4090 int monitor_read_bdrv_key_start(Monitor *mon, BlockDriverState *bs,
4091 BlockCompletionFunc *completion_cb,
4092 void *opaque)
4093 {
4094 int err;
4095
4096 monitor_printf(mon, "%s (%s) is encrypted.\n", bdrv_get_device_name(bs),
4097 bdrv_get_encrypted_filename(bs));
4098
4099 mon->password_completion_cb = completion_cb;
4100 mon->password_opaque = opaque;
4101
4102 err = monitor_read_password(mon, bdrv_password_cb, bs);
4103
4104 if (err && completion_cb)
4105 completion_cb(opaque, err);
4106
4107 return err;
4108 }
4109
4110 int monitor_read_block_device_key(Monitor *mon, const char *device,
4111 BlockCompletionFunc *completion_cb,
4112 void *opaque)
4113 {
4114 Error *err = NULL;
4115 BlockBackend *blk;
4116
4117 blk = blk_by_name(device);
4118 if (!blk) {
4119 monitor_printf(mon, "Device not found %s\n", device);
4120 return -1;
4121 }
4122 if (!blk_bs(blk)) {
4123 monitor_printf(mon, "Device '%s' has no medium\n", device);
4124 return -1;
4125 }
4126
4127 bdrv_add_key(blk_bs(blk), NULL, &err);
4128 if (err) {
4129 error_free(err);
4130 return monitor_read_bdrv_key_start(mon, blk_bs(blk), completion_cb, opaque);
4131 }
4132
4133 if (completion_cb) {
4134 completion_cb(opaque, 0);
4135 }
4136 return 0;
4137 }
4138
4139 QemuOptsList qemu_mon_opts = {
4140 .name = "mon",
4141 .implied_opt_name = "chardev",
4142 .head = QTAILQ_HEAD_INITIALIZER(qemu_mon_opts.head),
4143 .desc = {
4144 {
4145 .name = "mode",
4146 .type = QEMU_OPT_STRING,
4147 },{
4148 .name = "chardev",
4149 .type = QEMU_OPT_STRING,
4150 },{
4151 .name = "default", /* deprecated */
4152 .type = QEMU_OPT_BOOL,
4153 },{
4154 .name = "pretty",
4155 .type = QEMU_OPT_BOOL,
4156 },
4157 { /* end of list */ }
4158 },
4159 };
4160
4161 #ifndef TARGET_I386
4162 void qmp_rtc_reset_reinjection(Error **errp)
4163 {
4164 error_setg(errp, QERR_FEATURE_DISABLED, "rtc-reset-reinjection");
4165 }
4166 #endif
4167
4168 #ifndef TARGET_S390X
4169 void qmp_dump_skeys(const char *filename, Error **errp)
4170 {
4171 error_setg(errp, QERR_FEATURE_DISABLED, "dump-skeys");
4172 }
4173 #endif
4174
4175 #ifndef TARGET_ARM
4176 GICCapabilityList *qmp_query_gic_capabilities(Error **errp)
4177 {
4178 error_setg(errp, QERR_FEATURE_DISABLED, "query-gic-capabilities");
4179 return NULL;
4180 }
4181 #endif
4182
4183 HotpluggableCPUList *qmp_query_hotpluggable_cpus(Error **errp)
4184 {
4185 MachineState *ms = MACHINE(qdev_get_machine());
4186 MachineClass *mc = MACHINE_GET_CLASS(ms);
4187
4188 if (!mc->has_hotpluggable_cpus) {
4189 error_setg(errp, QERR_FEATURE_DISABLED, "query-hotpluggable-cpus");
4190 return NULL;
4191 }
4192
4193 return machine_query_hotpluggable_cpus(ms);
4194 }
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