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colo-compare: Insert packet into the suitable position of packet queue directly
[qemu/kevin.git] / monitor.c
blobe36fb5308d343d592138a9339c1ce2ac09a1425a
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 "chardev/char-fe.h"
39 #include "ui/qemu-spice.h"
40 #include "sysemu/numa.h"
41 #include "monitor/monitor.h"
42 #include "qemu/config-file.h"
43 #include "qemu/readline.h"
44 #include "ui/console.h"
45 #include "ui/input.h"
46 #include "sysemu/blockdev.h"
47 #include "sysemu/block-backend.h"
48 #include "audio/audio.h"
49 #include "disas/disas.h"
50 #include "sysemu/balloon.h"
51 #include "qemu/timer.h"
52 #include "sysemu/hw_accel.h"
53 #include "qemu/acl.h"
54 #include "sysemu/tpm.h"
55 #include "qapi/qmp/qerror.h"
56 #include "qapi/qmp/types.h"
57 #include "qapi/qmp/qjson.h"
58 #include "qapi/qmp/json-streamer.h"
59 #include "qapi/qmp/json-parser.h"
60 #include "qom/object_interfaces.h"
61 #include "trace-root.h"
62 #include "trace/control.h"
63 #include "monitor/hmp-target.h"
64 #ifdef CONFIG_TRACE_SIMPLE
65 #include "trace/simple.h"
66 #endif
67 #include "exec/memory.h"
68 #include "exec/exec-all.h"
69 #include "qemu/log.h"
70 #include "qmp-commands.h"
71 #include "hmp.h"
72 #include "qemu/thread.h"
73 #include "block/qapi.h"
74 #include "qapi/qmp-event.h"
75 #include "qapi-event.h"
76 #include "qmp-introspect.h"
77 #include "sysemu/qtest.h"
78 #include "sysemu/cpus.h"
79 #include "qemu/cutils.h"
80 #include "qapi/qmp/dispatch.h"
81
82 #if defined(TARGET_S390X)
83 #include "hw/s390x/storage-keys.h"
84 #include "hw/s390x/storage-attributes.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 QmpCommandList *commands;
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 gchar *mon_cpu_path;
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 QmpCommandList qmp_commands, qmp_cap_negotiation_commands;
225
226 Monitor *cur_mon;
227
228 static QEMUClockType event_clock_type = QEMU_CLOCK_REALTIME;
229
230 static void monitor_command_cb(void *opaque, const char *cmdline,
231 void *readline_opaque);
232
233 /**
234 * Is @mon a QMP monitor?
235 */
236 static inline bool monitor_is_qmp(const Monitor *mon)
237 {
238 return (mon->flags & MONITOR_USE_CONTROL);
239 }
240
241 /**
242 * Is the current monitor, if any, a QMP monitor?
243 */
244 bool monitor_cur_is_qmp(void)
245 {
246 return cur_mon && monitor_is_qmp(cur_mon);
247 }
248
249 void monitor_read_command(Monitor *mon, int show_prompt)
250 {
251 if (!mon->rs)
252 return;
253
254 readline_start(mon->rs, "(qemu) ", 0, monitor_command_cb, NULL);
255 if (show_prompt)
256 readline_show_prompt(mon->rs);
257 }
258
259 int monitor_read_password(Monitor *mon, ReadLineFunc *readline_func,
260 void *opaque)
261 {
262 if (mon->rs) {
263 readline_start(mon->rs, "Password: ", 1, readline_func, opaque);
264 /* prompt is printed on return from the command handler */
265 return 0;
266 } else {
267 monitor_printf(mon, "terminal does not support password prompting\n");
268 return -ENOTTY;
269 }
270 }
271
272 static void monitor_flush_locked(Monitor *mon);
273
274 static gboolean monitor_unblocked(GIOChannel *chan, GIOCondition cond,
275 void *opaque)
276 {
277 Monitor *mon = opaque;
278
279 qemu_mutex_lock(&mon->out_lock);
280 mon->out_watch = 0;
281 monitor_flush_locked(mon);
282 qemu_mutex_unlock(&mon->out_lock);
283 return FALSE;
284 }
285
286 /* Called with mon->out_lock held. */
287 static void monitor_flush_locked(Monitor *mon)
288 {
289 int rc;
290 size_t len;
291 const char *buf;
292
293 if (mon->skip_flush) {
294 return;
295 }
296
297 buf = qstring_get_str(mon->outbuf);
298 len = qstring_get_length(mon->outbuf);
299
300 if (len && !mon->mux_out) {
301 rc = qemu_chr_fe_write(&mon->chr, (const uint8_t *) buf, len);
302 if ((rc < 0 && errno != EAGAIN) || (rc == len)) {
303 /* all flushed or error */
304 QDECREF(mon->outbuf);
305 mon->outbuf = qstring_new();
306 return;
307 }
308 if (rc > 0) {
309 /* partial write */
310 QString *tmp = qstring_from_str(buf + rc);
311 QDECREF(mon->outbuf);
312 mon->outbuf = tmp;
313 }
314 if (mon->out_watch == 0) {
315 mon->out_watch =
316 qemu_chr_fe_add_watch(&mon->chr, G_IO_OUT | G_IO_HUP,
317 monitor_unblocked, mon);
318 }
319 }
320 }
321
322 void monitor_flush(Monitor *mon)
323 {
324 qemu_mutex_lock(&mon->out_lock);
325 monitor_flush_locked(mon);
326 qemu_mutex_unlock(&mon->out_lock);
327 }
328
329 /* flush at every end of line */
330 static void monitor_puts(Monitor *mon, const char *str)
331 {
332 char c;
333
334 qemu_mutex_lock(&mon->out_lock);
335 for(;;) {
336 c = *str++;
337 if (c == '\0')
338 break;
339 if (c == '\n') {
340 qstring_append_chr(mon->outbuf, '\r');
341 }
342 qstring_append_chr(mon->outbuf, c);
343 if (c == '\n') {
344 monitor_flush_locked(mon);
345 }
346 }
347 qemu_mutex_unlock(&mon->out_lock);
348 }
349
350 void monitor_vprintf(Monitor *mon, const char *fmt, va_list ap)
351 {
352 char *buf;
353
354 if (!mon)
355 return;
356
357 if (monitor_is_qmp(mon)) {
358 return;
359 }
360
361 buf = g_strdup_vprintf(fmt, ap);
362 monitor_puts(mon, buf);
363 g_free(buf);
364 }
365
366 void monitor_printf(Monitor *mon, const char *fmt, ...)
367 {
368 va_list ap;
369 va_start(ap, fmt);
370 monitor_vprintf(mon, fmt, ap);
371 va_end(ap);
372 }
373
374 int monitor_fprintf(FILE *stream, const char *fmt, ...)
375 {
376 va_list ap;
377 va_start(ap, fmt);
378 monitor_vprintf((Monitor *)stream, fmt, ap);
379 va_end(ap);
380 return 0;
381 }
382
383 static void monitor_json_emitter(Monitor *mon, const QObject *data)
384 {
385 QString *json;
386
387 json = mon->flags & MONITOR_USE_PRETTY ? qobject_to_json_pretty(data) :
388 qobject_to_json(data);
389 assert(json != NULL);
390
391 qstring_append_chr(json, '\n');
392 monitor_puts(mon, qstring_get_str(json));
393
394 QDECREF(json);
395 }
396
397 static MonitorQAPIEventConf monitor_qapi_event_conf[QAPI_EVENT__MAX] = {
398 /* Limit guest-triggerable events to 1 per second */
399 [QAPI_EVENT_RTC_CHANGE] = { 1000 * SCALE_MS },
400 [QAPI_EVENT_WATCHDOG] = { 1000 * SCALE_MS },
401 [QAPI_EVENT_BALLOON_CHANGE] = { 1000 * SCALE_MS },
402 [QAPI_EVENT_QUORUM_REPORT_BAD] = { 1000 * SCALE_MS },
403 [QAPI_EVENT_QUORUM_FAILURE] = { 1000 * SCALE_MS },
404 [QAPI_EVENT_VSERPORT_CHANGE] = { 1000 * SCALE_MS },
405 };
406
407 GHashTable *monitor_qapi_event_state;
408
409 /*
410 * Emits the event to every monitor instance, @event is only used for trace
411 * Called with monitor_lock held.
412 */
413 static void monitor_qapi_event_emit(QAPIEvent event, QDict *qdict)
414 {
415 Monitor *mon;
416
417 trace_monitor_protocol_event_emit(event, qdict);
418 QLIST_FOREACH(mon, &mon_list, entry) {
419 if (monitor_is_qmp(mon)
420 && mon->qmp.commands != &qmp_cap_negotiation_commands) {
421 monitor_json_emitter(mon, QOBJECT(qdict));
422 }
423 }
424 }
425
426 static void monitor_qapi_event_handler(void *opaque);
427
428 /*
429 * Queue a new event for emission to Monitor instances,
430 * applying any rate limiting if required.
431 */
432 static void
433 monitor_qapi_event_queue(QAPIEvent event, QDict *qdict, Error **errp)
434 {
435 MonitorQAPIEventConf *evconf;
436 MonitorQAPIEventState *evstate;
437
438 assert(event < QAPI_EVENT__MAX);
439 evconf = &monitor_qapi_event_conf[event];
440 trace_monitor_protocol_event_queue(event, qdict, evconf->rate);
441
442 qemu_mutex_lock(&monitor_lock);
443
444 if (!evconf->rate) {
445 /* Unthrottled event */
446 monitor_qapi_event_emit(event, qdict);
447 } else {
448 QDict *data = qobject_to_qdict(qdict_get(qdict, "data"));
449 MonitorQAPIEventState key = { .event = event, .data = data };
450
451 evstate = g_hash_table_lookup(monitor_qapi_event_state, &key);
452 assert(!evstate || timer_pending(evstate->timer));
453
454 if (evstate) {
455 /*
456 * Timer is pending for (at least) evconf->rate ns after
457 * last send. Store event for sending when timer fires,
458 * replacing a prior stored event if any.
459 */
460 QDECREF(evstate->qdict);
461 evstate->qdict = qdict;
462 QINCREF(evstate->qdict);
463 } else {
464 /*
465 * Last send was (at least) evconf->rate ns ago.
466 * Send immediately, and arm the timer to call
467 * monitor_qapi_event_handler() in evconf->rate ns. Any
468 * events arriving before then will be delayed until then.
469 */
470 int64_t now = qemu_clock_get_ns(event_clock_type);
471
472 monitor_qapi_event_emit(event, qdict);
473
474 evstate = g_new(MonitorQAPIEventState, 1);
475 evstate->event = event;
476 evstate->data = data;
477 QINCREF(evstate->data);
478 evstate->qdict = NULL;
479 evstate->timer = timer_new_ns(event_clock_type,
480 monitor_qapi_event_handler,
481 evstate);
482 g_hash_table_add(monitor_qapi_event_state, evstate);
483 timer_mod_ns(evstate->timer, now + evconf->rate);
484 }
485 }
486
487 qemu_mutex_unlock(&monitor_lock);
488 }
489
490 /*
491 * This function runs evconf->rate ns after sending a throttled
492 * event.
493 * If another event has since been stored, send it.
494 */
495 static void monitor_qapi_event_handler(void *opaque)
496 {
497 MonitorQAPIEventState *evstate = opaque;
498 MonitorQAPIEventConf *evconf = &monitor_qapi_event_conf[evstate->event];
499
500 trace_monitor_protocol_event_handler(evstate->event, evstate->qdict);
501 qemu_mutex_lock(&monitor_lock);
502
503 if (evstate->qdict) {
504 int64_t now = qemu_clock_get_ns(event_clock_type);
505
506 monitor_qapi_event_emit(evstate->event, evstate->qdict);
507 QDECREF(evstate->qdict);
508 evstate->qdict = NULL;
509 timer_mod_ns(evstate->timer, now + evconf->rate);
510 } else {
511 g_hash_table_remove(monitor_qapi_event_state, evstate);
512 QDECREF(evstate->data);
513 timer_free(evstate->timer);
514 g_free(evstate);
515 }
516
517 qemu_mutex_unlock(&monitor_lock);
518 }
519
520 static unsigned int qapi_event_throttle_hash(const void *key)
521 {
522 const MonitorQAPIEventState *evstate = key;
523 unsigned int hash = evstate->event * 255;
524
525 if (evstate->event == QAPI_EVENT_VSERPORT_CHANGE) {
526 hash += g_str_hash(qdict_get_str(evstate->data, "id"));
527 }
528
529 if (evstate->event == QAPI_EVENT_QUORUM_REPORT_BAD) {
530 hash += g_str_hash(qdict_get_str(evstate->data, "node-name"));
531 }
532
533 return hash;
534 }
535
536 static gboolean qapi_event_throttle_equal(const void *a, const void *b)
537 {
538 const MonitorQAPIEventState *eva = a;
539 const MonitorQAPIEventState *evb = b;
540
541 if (eva->event != evb->event) {
542 return FALSE;
543 }
544
545 if (eva->event == QAPI_EVENT_VSERPORT_CHANGE) {
546 return !strcmp(qdict_get_str(eva->data, "id"),
547 qdict_get_str(evb->data, "id"));
548 }
549
550 if (eva->event == QAPI_EVENT_QUORUM_REPORT_BAD) {
551 return !strcmp(qdict_get_str(eva->data, "node-name"),
552 qdict_get_str(evb->data, "node-name"));
553 }
554
555 return TRUE;
556 }
557
558 static void monitor_qapi_event_init(void)
559 {
560 if (qtest_enabled()) {
561 event_clock_type = QEMU_CLOCK_VIRTUAL;
562 }
563
564 monitor_qapi_event_state = g_hash_table_new(qapi_event_throttle_hash,
565 qapi_event_throttle_equal);
566 qmp_event_set_func_emit(monitor_qapi_event_queue);
567 }
568
569 static void handle_hmp_command(Monitor *mon, const char *cmdline);
570
571 static void monitor_data_init(Monitor *mon)
572 {
573 memset(mon, 0, sizeof(Monitor));
574 qemu_mutex_init(&mon->out_lock);
575 mon->outbuf = qstring_new();
576 /* Use *mon_cmds by default. */
577 mon->cmd_table = mon_cmds;
578 }
579
580 static void monitor_data_destroy(Monitor *mon)
581 {
582 g_free(mon->mon_cpu_path);
583 qemu_chr_fe_deinit(&mon->chr, false);
584 if (monitor_is_qmp(mon)) {
585 json_message_parser_destroy(&mon->qmp.parser);
586 }
587 g_free(mon->rs);
588 QDECREF(mon->outbuf);
589 qemu_mutex_destroy(&mon->out_lock);
590 }
591
592 char *qmp_human_monitor_command(const char *command_line, bool has_cpu_index,
593 int64_t cpu_index, Error **errp)
594 {
595 char *output = NULL;
596 Monitor *old_mon, hmp;
597
598 monitor_data_init(&hmp);
599 hmp.skip_flush = true;
600
601 old_mon = cur_mon;
602 cur_mon = &hmp;
603
604 if (has_cpu_index) {
605 int ret = monitor_set_cpu(cpu_index);
606 if (ret < 0) {
607 cur_mon = old_mon;
608 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "cpu-index",
609 "a CPU number");
610 goto out;
611 }
612 }
613
614 handle_hmp_command(&hmp, command_line);
615 cur_mon = old_mon;
616
617 qemu_mutex_lock(&hmp.out_lock);
618 if (qstring_get_length(hmp.outbuf) > 0) {
619 output = g_strdup(qstring_get_str(hmp.outbuf));
620 } else {
621 output = g_strdup("");
622 }
623 qemu_mutex_unlock(&hmp.out_lock);
624
625 out:
626 monitor_data_destroy(&hmp);
627 return output;
628 }
629
630 static int compare_cmd(const char *name, const char *list)
631 {
632 const char *p, *pstart;
633 int len;
634 len = strlen(name);
635 p = list;
636 for(;;) {
637 pstart = p;
638 p = strchr(p, '|');
639 if (!p)
640 p = pstart + strlen(pstart);
641 if ((p - pstart) == len && !memcmp(pstart, name, len))
642 return 1;
643 if (*p == '\0')
644 break;
645 p++;
646 }
647 return 0;
648 }
649
650 static int get_str(char *buf, int buf_size, const char **pp)
651 {
652 const char *p;
653 char *q;
654 int c;
655
656 q = buf;
657 p = *pp;
658 while (qemu_isspace(*p)) {
659 p++;
660 }
661 if (*p == '\0') {
662 fail:
663 *q = '\0';
664 *pp = p;
665 return -1;
666 }
667 if (*p == '\"') {
668 p++;
669 while (*p != '\0' && *p != '\"') {
670 if (*p == '\\') {
671 p++;
672 c = *p++;
673 switch (c) {
674 case 'n':
675 c = '\n';
676 break;
677 case 'r':
678 c = '\r';
679 break;
680 case '\\':
681 case '\'':
682 case '\"':
683 break;
684 default:
685 printf("unsupported escape code: '\\%c'\n", c);
686 goto fail;
687 }
688 if ((q - buf) < buf_size - 1) {
689 *q++ = c;
690 }
691 } else {
692 if ((q - buf) < buf_size - 1) {
693 *q++ = *p;
694 }
695 p++;
696 }
697 }
698 if (*p != '\"') {
699 printf("unterminated string\n");
700 goto fail;
701 }
702 p++;
703 } else {
704 while (*p != '\0' && !qemu_isspace(*p)) {
705 if ((q - buf) < buf_size - 1) {
706 *q++ = *p;
707 }
708 p++;
709 }
710 }
711 *q = '\0';
712 *pp = p;
713 return 0;
714 }
715
716 #define MAX_ARGS 16
717
718 static void free_cmdline_args(char **args, int nb_args)
719 {
720 int i;
721
722 assert(nb_args <= MAX_ARGS);
723
724 for (i = 0; i < nb_args; i++) {
725 g_free(args[i]);
726 }
727
728 }
729
730 /*
731 * Parse the command line to get valid args.
732 * @cmdline: command line to be parsed.
733 * @pnb_args: location to store the number of args, must NOT be NULL.
734 * @args: location to store the args, which should be freed by caller, must
735 * NOT be NULL.
736 *
737 * Returns 0 on success, negative on failure.
738 *
739 * NOTE: this parser is an approximate form of the real command parser. Number
740 * of args have a limit of MAX_ARGS. If cmdline contains more, it will
741 * return with failure.
742 */
743 static int parse_cmdline(const char *cmdline,
744 int *pnb_args, char **args)
745 {
746 const char *p;
747 int nb_args, ret;
748 char buf[1024];
749
750 p = cmdline;
751 nb_args = 0;
752 for (;;) {
753 while (qemu_isspace(*p)) {
754 p++;
755 }
756 if (*p == '\0') {
757 break;
758 }
759 if (nb_args >= MAX_ARGS) {
760 goto fail;
761 }
762 ret = get_str(buf, sizeof(buf), &p);
763 if (ret < 0) {
764 goto fail;
765 }
766 args[nb_args] = g_strdup(buf);
767 nb_args++;
768 }
769 *pnb_args = nb_args;
770 return 0;
771
772 fail:
773 free_cmdline_args(args, nb_args);
774 return -1;
775 }
776
777 static void help_cmd_dump_one(Monitor *mon,
778 const mon_cmd_t *cmd,
779 char **prefix_args,
780 int prefix_args_nb)
781 {
782 int i;
783
784 for (i = 0; i < prefix_args_nb; i++) {
785 monitor_printf(mon, "%s ", prefix_args[i]);
786 }
787 monitor_printf(mon, "%s %s -- %s\n", cmd->name, cmd->params, cmd->help);
788 }
789
790 /* @args[@arg_index] is the valid command need to find in @cmds */
791 static void help_cmd_dump(Monitor *mon, const mon_cmd_t *cmds,
792 char **args, int nb_args, int arg_index)
793 {
794 const mon_cmd_t *cmd;
795
796 /* No valid arg need to compare with, dump all in *cmds */
797 if (arg_index >= nb_args) {
798 for (cmd = cmds; cmd->name != NULL; cmd++) {
799 help_cmd_dump_one(mon, cmd, args, arg_index);
800 }
801 return;
802 }
803
804 /* Find one entry to dump */
805 for (cmd = cmds; cmd->name != NULL; cmd++) {
806 if (compare_cmd(args[arg_index], cmd->name)) {
807 if (cmd->sub_table) {
808 /* continue with next arg */
809 help_cmd_dump(mon, cmd->sub_table,
810 args, nb_args, arg_index + 1);
811 } else {
812 help_cmd_dump_one(mon, cmd, args, arg_index);
813 }
814 break;
815 }
816 }
817 }
818
819 static void help_cmd(Monitor *mon, const char *name)
820 {
821 char *args[MAX_ARGS];
822 int nb_args = 0;
823
824 /* 1. parse user input */
825 if (name) {
826 /* special case for log, directly dump and return */
827 if (!strcmp(name, "log")) {
828 const QEMULogItem *item;
829 monitor_printf(mon, "Log items (comma separated):\n");
830 monitor_printf(mon, "%-10s %s\n", "none", "remove all logs");
831 for (item = qemu_log_items; item->mask != 0; item++) {
832 monitor_printf(mon, "%-10s %s\n", item->name, item->help);
833 }
834 return;
835 }
836
837 if (parse_cmdline(name, &nb_args, args) < 0) {
838 return;
839 }
840 }
841
842 /* 2. dump the contents according to parsed args */
843 help_cmd_dump(mon, mon->cmd_table, args, nb_args, 0);
844
845 free_cmdline_args(args, nb_args);
846 }
847
848 static void do_help_cmd(Monitor *mon, const QDict *qdict)
849 {
850 help_cmd(mon, qdict_get_try_str(qdict, "name"));
851 }
852
853 static void hmp_trace_event(Monitor *mon, const QDict *qdict)
854 {
855 const char *tp_name = qdict_get_str(qdict, "name");
856 bool new_state = qdict_get_bool(qdict, "option");
857 bool has_vcpu = qdict_haskey(qdict, "vcpu");
858 int vcpu = qdict_get_try_int(qdict, "vcpu", 0);
859 Error *local_err = NULL;
860
861 if (vcpu < 0) {
862 monitor_printf(mon, "argument vcpu must be positive");
863 return;
864 }
865
866 qmp_trace_event_set_state(tp_name, new_state, true, true, has_vcpu, vcpu, &local_err);
867 if (local_err) {
868 error_report_err(local_err);
869 }
870 }
871
872 #ifdef CONFIG_TRACE_SIMPLE
873 static void hmp_trace_file(Monitor *mon, const QDict *qdict)
874 {
875 const char *op = qdict_get_try_str(qdict, "op");
876 const char *arg = qdict_get_try_str(qdict, "arg");
877
878 if (!op) {
879 st_print_trace_file_status((FILE *)mon, &monitor_fprintf);
880 } else if (!strcmp(op, "on")) {
881 st_set_trace_file_enabled(true);
882 } else if (!strcmp(op, "off")) {
883 st_set_trace_file_enabled(false);
884 } else if (!strcmp(op, "flush")) {
885 st_flush_trace_buffer();
886 } else if (!strcmp(op, "set")) {
887 if (arg) {
888 st_set_trace_file(arg);
889 }
890 } else {
891 monitor_printf(mon, "unexpected argument \"%s\"\n", op);
892 help_cmd(mon, "trace-file");
893 }
894 }
895 #endif
896
897 static void hmp_info_help(Monitor *mon, const QDict *qdict)
898 {
899 help_cmd(mon, "info");
900 }
901
902 static void query_commands_cb(QmpCommand *cmd, void *opaque)
903 {
904 CommandInfoList *info, **list = opaque;
905
906 if (!cmd->enabled) {
907 return;
908 }
909
910 info = g_malloc0(sizeof(*info));
911 info->value = g_malloc0(sizeof(*info->value));
912 info->value->name = g_strdup(cmd->name);
913 info->next = *list;
914 *list = info;
915 }
916
917 CommandInfoList *qmp_query_commands(Error **errp)
918 {
919 CommandInfoList *list = NULL;
920
921 qmp_for_each_command(cur_mon->qmp.commands, query_commands_cb, &list);
922
923 return list;
924 }
925
926 EventInfoList *qmp_query_events(Error **errp)
927 {
928 EventInfoList *info, *ev_list = NULL;
929 QAPIEvent e;
930
931 for (e = 0 ; e < QAPI_EVENT__MAX ; e++) {
932 const char *event_name = QAPIEvent_str(e);
933 assert(event_name != NULL);
934 info = g_malloc0(sizeof(*info));
935 info->value = g_malloc0(sizeof(*info->value));
936 info->value->name = g_strdup(event_name);
937
938 info->next = ev_list;
939 ev_list = info;
940 }
941
942 return ev_list;
943 }
944
945 /*
946 * Minor hack: generated marshalling suppressed for this command
947 * ('gen': false in the schema) so we can parse the JSON string
948 * directly into QObject instead of first parsing it with
949 * visit_type_SchemaInfoList() into a SchemaInfoList, then marshal it
950 * to QObject with generated output marshallers, every time. Instead,
951 * we do it in test-qobject-input-visitor.c, just to make sure
952 * qapi-introspect.py's output actually conforms to the schema.
953 */
954 static void qmp_query_qmp_schema(QDict *qdict, QObject **ret_data,
955 Error **errp)
956 {
957 *ret_data = qobject_from_json(qmp_schema_json, &error_abort);
958 }
959
960 /*
961 * We used to define commands in qmp-commands.hx in addition to the
962 * QAPI schema. This permitted defining some of them only in certain
963 * configurations. query-commands has always reflected that (good,
964 * because it lets QMP clients figure out what's actually available),
965 * while query-qmp-schema never did (not so good). This function is a
966 * hack to keep the configuration-specific commands defined exactly as
967 * before, even though qmp-commands.hx is gone.
968 *
969 * FIXME Educate the QAPI schema on configuration-specific commands,
970 * and drop this hack.
971 */
972 static void qmp_unregister_commands_hack(void)
973 {
974 #ifndef CONFIG_SPICE
975 qmp_unregister_command(&qmp_commands, "query-spice");
976 #endif
977 #ifndef CONFIG_REPLICATION
978 qmp_unregister_command(&qmp_commands, "xen-set-replication");
979 qmp_unregister_command(&qmp_commands, "query-xen-replication-status");
980 qmp_unregister_command(&qmp_commands, "xen-colo-do-checkpoint");
981 #endif
982 #ifndef TARGET_I386
983 qmp_unregister_command(&qmp_commands, "rtc-reset-reinjection");
984 #endif
985 #ifndef TARGET_S390X
986 qmp_unregister_command(&qmp_commands, "dump-skeys");
987 #endif
988 #ifndef TARGET_ARM
989 qmp_unregister_command(&qmp_commands, "query-gic-capabilities");
990 #endif
991 #if !defined(TARGET_S390X) && !defined(TARGET_I386)
992 qmp_unregister_command(&qmp_commands, "query-cpu-model-expansion");
993 #endif
994 #if !defined(TARGET_S390X)
995 qmp_unregister_command(&qmp_commands, "query-cpu-model-baseline");
996 qmp_unregister_command(&qmp_commands, "query-cpu-model-comparison");
997 #endif
998 #if !defined(TARGET_PPC) && !defined(TARGET_ARM) && !defined(TARGET_I386) \
999 && !defined(TARGET_S390X)
1000 qmp_unregister_command(&qmp_commands, "query-cpu-definitions");
1001 #endif
1002 }
1003
1004 void monitor_init_qmp_commands(void)
1005 {
1006 /*
1007 * Two command lists:
1008 * - qmp_commands contains all QMP commands
1009 * - qmp_cap_negotiation_commands contains just
1010 * "qmp_capabilities", to enforce capability negotiation
1011 */
1012
1013 qmp_init_marshal(&qmp_commands);
1014
1015 qmp_register_command(&qmp_commands, "query-qmp-schema",
1016 qmp_query_qmp_schema,
1017 QCO_NO_OPTIONS);
1018 qmp_register_command(&qmp_commands, "device_add", qmp_device_add,
1019 QCO_NO_OPTIONS);
1020 qmp_register_command(&qmp_commands, "netdev_add", qmp_netdev_add,
1021 QCO_NO_OPTIONS);
1022
1023 qmp_unregister_commands_hack();
1024
1025 QTAILQ_INIT(&qmp_cap_negotiation_commands);
1026 qmp_register_command(&qmp_cap_negotiation_commands, "qmp_capabilities",
1027 qmp_marshal_qmp_capabilities, QCO_NO_OPTIONS);
1028 }
1029
1030 void qmp_qmp_capabilities(Error **errp)
1031 {
1032 if (cur_mon->qmp.commands == &qmp_commands) {
1033 error_set(errp, ERROR_CLASS_COMMAND_NOT_FOUND,
1034 "Capabilities negotiation is already complete, command "
1035 "ignored");
1036 return;
1037 }
1038
1039 cur_mon->qmp.commands = &qmp_commands;
1040 }
1041
1042 /* set the current CPU defined by the user */
1043 int monitor_set_cpu(int cpu_index)
1044 {
1045 CPUState *cpu;
1046
1047 cpu = qemu_get_cpu(cpu_index);
1048 if (cpu == NULL) {
1049 return -1;
1050 }
1051 g_free(cur_mon->mon_cpu_path);
1052 cur_mon->mon_cpu_path = object_get_canonical_path(OBJECT(cpu));
1053 return 0;
1054 }
1055
1056 CPUState *mon_get_cpu(void)
1057 {
1058 CPUState *cpu;
1059
1060 if (cur_mon->mon_cpu_path) {
1061 cpu = (CPUState *) object_resolve_path_type(cur_mon->mon_cpu_path,
1062 TYPE_CPU, NULL);
1063 if (!cpu) {
1064 g_free(cur_mon->mon_cpu_path);
1065 cur_mon->mon_cpu_path = NULL;
1066 }
1067 }
1068 if (!cur_mon->mon_cpu_path) {
1069 if (!first_cpu) {
1070 return NULL;
1071 }
1072 monitor_set_cpu(first_cpu->cpu_index);
1073 cpu = first_cpu;
1074 }
1075 cpu_synchronize_state(cpu);
1076 return cpu;
1077 }
1078
1079 CPUArchState *mon_get_cpu_env(void)
1080 {
1081 CPUState *cs = mon_get_cpu();
1082
1083 return cs ? cs->env_ptr : NULL;
1084 }
1085
1086 int monitor_get_cpu_index(void)
1087 {
1088 CPUState *cs = mon_get_cpu();
1089
1090 return cs ? cs->cpu_index : UNASSIGNED_CPU_INDEX;
1091 }
1092
1093 static void hmp_info_registers(Monitor *mon, const QDict *qdict)
1094 {
1095 bool all_cpus = qdict_get_try_bool(qdict, "cpustate_all", false);
1096 CPUState *cs;
1097
1098 if (all_cpus) {
1099 CPU_FOREACH(cs) {
1100 monitor_printf(mon, "\nCPU#%d\n", cs->cpu_index);
1101 cpu_dump_state(cs, (FILE *)mon, monitor_fprintf, CPU_DUMP_FPU);
1102 }
1103 } else {
1104 cs = mon_get_cpu();
1105
1106 if (!cs) {
1107 monitor_printf(mon, "No CPU available\n");
1108 return;
1109 }
1110
1111 cpu_dump_state(cs, (FILE *)mon, monitor_fprintf, CPU_DUMP_FPU);
1112 }
1113 }
1114
1115 #ifdef CONFIG_TCG
1116 static void hmp_info_jit(Monitor *mon, const QDict *qdict)
1117 {
1118 if (!tcg_enabled()) {
1119 error_report("JIT information is only available with accel=tcg");
1120 return;
1121 }
1122
1123 dump_exec_info((FILE *)mon, monitor_fprintf);
1124 dump_drift_info((FILE *)mon, monitor_fprintf);
1125 }
1126
1127 static void hmp_info_opcount(Monitor *mon, const QDict *qdict)
1128 {
1129 dump_opcount_info((FILE *)mon, monitor_fprintf);
1130 }
1131 #endif
1132
1133 static void hmp_info_history(Monitor *mon, const QDict *qdict)
1134 {
1135 int i;
1136 const char *str;
1137
1138 if (!mon->rs)
1139 return;
1140 i = 0;
1141 for(;;) {
1142 str = readline_get_history(mon->rs, i);
1143 if (!str)
1144 break;
1145 monitor_printf(mon, "%d: '%s'\n", i, str);
1146 i++;
1147 }
1148 }
1149
1150 static void hmp_info_cpustats(Monitor *mon, const QDict *qdict)
1151 {
1152 CPUState *cs = mon_get_cpu();
1153
1154 if (!cs) {
1155 monitor_printf(mon, "No CPU available\n");
1156 return;
1157 }
1158 cpu_dump_statistics(cs, (FILE *)mon, &monitor_fprintf, 0);
1159 }
1160
1161 static void hmp_info_trace_events(Monitor *mon, const QDict *qdict)
1162 {
1163 const char *name = qdict_get_try_str(qdict, "name");
1164 bool has_vcpu = qdict_haskey(qdict, "vcpu");
1165 int vcpu = qdict_get_try_int(qdict, "vcpu", 0);
1166 TraceEventInfoList *events;
1167 TraceEventInfoList *elem;
1168 Error *local_err = NULL;
1169
1170 if (name == NULL) {
1171 name = "*";
1172 }
1173 if (vcpu < 0) {
1174 monitor_printf(mon, "argument vcpu must be positive");
1175 return;
1176 }
1177
1178 events = qmp_trace_event_get_state(name, has_vcpu, vcpu, &local_err);
1179 if (local_err) {
1180 error_report_err(local_err);
1181 return;
1182 }
1183
1184 for (elem = events; elem != NULL; elem = elem->next) {
1185 monitor_printf(mon, "%s : state %u\n",
1186 elem->value->name,
1187 elem->value->state == TRACE_EVENT_STATE_ENABLED ? 1 : 0);
1188 }
1189 qapi_free_TraceEventInfoList(events);
1190 }
1191
1192 void qmp_client_migrate_info(const char *protocol, const char *hostname,
1193 bool has_port, int64_t port,
1194 bool has_tls_port, int64_t tls_port,
1195 bool has_cert_subject, const char *cert_subject,
1196 Error **errp)
1197 {
1198 if (strcmp(protocol, "spice") == 0) {
1199 if (!qemu_using_spice(errp)) {
1200 return;
1201 }
1202
1203 if (!has_port && !has_tls_port) {
1204 error_setg(errp, QERR_MISSING_PARAMETER, "port/tls-port");
1205 return;
1206 }
1207
1208 if (qemu_spice_migrate_info(hostname,
1209 has_port ? port : -1,
1210 has_tls_port ? tls_port : -1,
1211 cert_subject)) {
1212 error_setg(errp, QERR_UNDEFINED_ERROR);
1213 return;
1214 }
1215 return;
1216 }
1217
1218 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "protocol", "spice");
1219 }
1220
1221 static void hmp_logfile(Monitor *mon, const QDict *qdict)
1222 {
1223 Error *err = NULL;
1224
1225 qemu_set_log_filename(qdict_get_str(qdict, "filename"), &err);
1226 if (err) {
1227 error_report_err(err);
1228 }
1229 }
1230
1231 static void hmp_log(Monitor *mon, const QDict *qdict)
1232 {
1233 int mask;
1234 const char *items = qdict_get_str(qdict, "items");
1235
1236 if (!strcmp(items, "none")) {
1237 mask = 0;
1238 } else {
1239 mask = qemu_str_to_log_mask(items);
1240 if (!mask) {
1241 help_cmd(mon, "log");
1242 return;
1243 }
1244 }
1245 qemu_set_log(mask);
1246 }
1247
1248 static void hmp_singlestep(Monitor *mon, const QDict *qdict)
1249 {
1250 const char *option = qdict_get_try_str(qdict, "option");
1251 if (!option || !strcmp(option, "on")) {
1252 singlestep = 1;
1253 } else if (!strcmp(option, "off")) {
1254 singlestep = 0;
1255 } else {
1256 monitor_printf(mon, "unexpected option %s\n", option);
1257 }
1258 }
1259
1260 static void hmp_gdbserver(Monitor *mon, const QDict *qdict)
1261 {
1262 const char *device = qdict_get_try_str(qdict, "device");
1263 if (!device)
1264 device = "tcp::" DEFAULT_GDBSTUB_PORT;
1265 if (gdbserver_start(device) < 0) {
1266 monitor_printf(mon, "Could not open gdbserver on device '%s'\n",
1267 device);
1268 } else if (strcmp(device, "none") == 0) {
1269 monitor_printf(mon, "Disabled gdbserver\n");
1270 } else {
1271 monitor_printf(mon, "Waiting for gdb connection on device '%s'\n",
1272 device);
1273 }
1274 }
1275
1276 static void hmp_watchdog_action(Monitor *mon, const QDict *qdict)
1277 {
1278 const char *action = qdict_get_str(qdict, "action");
1279 if (select_watchdog_action(action) == -1) {
1280 monitor_printf(mon, "Unknown watchdog action '%s'\n", action);
1281 }
1282 }
1283
1284 static void monitor_printc(Monitor *mon, int c)
1285 {
1286 monitor_printf(mon, "'");
1287 switch(c) {
1288 case '\'':
1289 monitor_printf(mon, "\\'");
1290 break;
1291 case '\\':
1292 monitor_printf(mon, "\\\\");
1293 break;
1294 case '\n':
1295 monitor_printf(mon, "\\n");
1296 break;
1297 case '\r':
1298 monitor_printf(mon, "\\r");
1299 break;
1300 default:
1301 if (c >= 32 && c <= 126) {
1302 monitor_printf(mon, "%c", c);
1303 } else {
1304 monitor_printf(mon, "\\x%02x", c);
1305 }
1306 break;
1307 }
1308 monitor_printf(mon, "'");
1309 }
1310
1311 static void memory_dump(Monitor *mon, int count, int format, int wsize,
1312 hwaddr addr, int is_physical)
1313 {
1314 int l, line_size, i, max_digits, len;
1315 uint8_t buf[16];
1316 uint64_t v;
1317 CPUState *cs = mon_get_cpu();
1318
1319 if (!cs && (format == 'i' || !is_physical)) {
1320 monitor_printf(mon, "Can not dump without CPU\n");
1321 return;
1322 }
1323
1324 if (format == 'i') {
1325 monitor_disas(mon, cs, addr, count, is_physical);
1326 return;
1327 }
1328
1329 len = wsize * count;
1330 if (wsize == 1)
1331 line_size = 8;
1332 else
1333 line_size = 16;
1334 max_digits = 0;
1335
1336 switch(format) {
1337 case 'o':
1338 max_digits = DIV_ROUND_UP(wsize * 8, 3);
1339 break;
1340 default:
1341 case 'x':
1342 max_digits = (wsize * 8) / 4;
1343 break;
1344 case 'u':
1345 case 'd':
1346 max_digits = DIV_ROUND_UP(wsize * 8 * 10, 33);
1347 break;
1348 case 'c':
1349 wsize = 1;
1350 break;
1351 }
1352
1353 while (len > 0) {
1354 if (is_physical)
1355 monitor_printf(mon, TARGET_FMT_plx ":", addr);
1356 else
1357 monitor_printf(mon, TARGET_FMT_lx ":", (target_ulong)addr);
1358 l = len;
1359 if (l > line_size)
1360 l = line_size;
1361 if (is_physical) {
1362 cpu_physical_memory_read(addr, buf, l);
1363 } else {
1364 if (cpu_memory_rw_debug(cs, addr, buf, l, 0) < 0) {
1365 monitor_printf(mon, " Cannot access memory\n");
1366 break;
1367 }
1368 }
1369 i = 0;
1370 while (i < l) {
1371 switch(wsize) {
1372 default:
1373 case 1:
1374 v = ldub_p(buf + i);
1375 break;
1376 case 2:
1377 v = lduw_p(buf + i);
1378 break;
1379 case 4:
1380 v = (uint32_t)ldl_p(buf + i);
1381 break;
1382 case 8:
1383 v = ldq_p(buf + i);
1384 break;
1385 }
1386 monitor_printf(mon, " ");
1387 switch(format) {
1388 case 'o':
1389 monitor_printf(mon, "%#*" PRIo64, max_digits, v);
1390 break;
1391 case 'x':
1392 monitor_printf(mon, "0x%0*" PRIx64, max_digits, v);
1393 break;
1394 case 'u':
1395 monitor_printf(mon, "%*" PRIu64, max_digits, v);
1396 break;
1397 case 'd':
1398 monitor_printf(mon, "%*" PRId64, max_digits, v);
1399 break;
1400 case 'c':
1401 monitor_printc(mon, v);
1402 break;
1403 }
1404 i += wsize;
1405 }
1406 monitor_printf(mon, "\n");
1407 addr += l;
1408 len -= l;
1409 }
1410 }
1411
1412 static void hmp_memory_dump(Monitor *mon, const QDict *qdict)
1413 {
1414 int count = qdict_get_int(qdict, "count");
1415 int format = qdict_get_int(qdict, "format");
1416 int size = qdict_get_int(qdict, "size");
1417 target_long addr = qdict_get_int(qdict, "addr");
1418
1419 memory_dump(mon, count, format, size, addr, 0);
1420 }
1421
1422 static void hmp_physical_memory_dump(Monitor *mon, const QDict *qdict)
1423 {
1424 int count = qdict_get_int(qdict, "count");
1425 int format = qdict_get_int(qdict, "format");
1426 int size = qdict_get_int(qdict, "size");
1427 hwaddr addr = qdict_get_int(qdict, "addr");
1428
1429 memory_dump(mon, count, format, size, addr, 1);
1430 }
1431
1432 static void *gpa2hva(MemoryRegion **p_mr, hwaddr addr, Error **errp)
1433 {
1434 MemoryRegionSection mrs = memory_region_find(get_system_memory(),
1435 addr, 1);
1436
1437 if (!mrs.mr) {
1438 error_setg(errp, "No memory is mapped at address 0x%" HWADDR_PRIx, addr);
1439 return NULL;
1440 }
1441
1442 if (!memory_region_is_ram(mrs.mr) && !memory_region_is_romd(mrs.mr)) {
1443 error_setg(errp, "Memory at address 0x%" HWADDR_PRIx "is not RAM", addr);
1444 memory_region_unref(mrs.mr);
1445 return NULL;
1446 }
1447
1448 *p_mr = mrs.mr;
1449 return qemu_map_ram_ptr(mrs.mr->ram_block, mrs.offset_within_region);
1450 }
1451
1452 static void hmp_gpa2hva(Monitor *mon, const QDict *qdict)
1453 {
1454 hwaddr addr = qdict_get_int(qdict, "addr");
1455 Error *local_err = NULL;
1456 MemoryRegion *mr = NULL;
1457 void *ptr;
1458
1459 ptr = gpa2hva(&mr, addr, &local_err);
1460 if (local_err) {
1461 error_report_err(local_err);
1462 return;
1463 }
1464
1465 monitor_printf(mon, "Host virtual address for 0x%" HWADDR_PRIx
1466 " (%s) is %p\n",
1467 addr, mr->name, ptr);
1468
1469 memory_region_unref(mr);
1470 }
1471
1472 #ifdef CONFIG_LINUX
1473 static uint64_t vtop(void *ptr, Error **errp)
1474 {
1475 uint64_t pinfo;
1476 uint64_t ret = -1;
1477 uintptr_t addr = (uintptr_t) ptr;
1478 uintptr_t pagesize = getpagesize();
1479 off_t offset = addr / pagesize * sizeof(pinfo);
1480 int fd;
1481
1482 fd = open("/proc/self/pagemap", O_RDONLY);
1483 if (fd == -1) {
1484 error_setg_errno(errp, errno, "Cannot open /proc/self/pagemap");
1485 return -1;
1486 }
1487
1488 /* Force copy-on-write if necessary. */
1489 atomic_add((uint8_t *)ptr, 0);
1490
1491 if (pread(fd, &pinfo, sizeof(pinfo), offset) != sizeof(pinfo)) {
1492 error_setg_errno(errp, errno, "Cannot read pagemap");
1493 goto out;
1494 }
1495 if ((pinfo & (1ull << 63)) == 0) {
1496 error_setg(errp, "Page not present");
1497 goto out;
1498 }
1499 ret = ((pinfo & 0x007fffffffffffffull) * pagesize) | (addr & (pagesize - 1));
1500
1501 out:
1502 close(fd);
1503 return ret;
1504 }
1505
1506 static void hmp_gpa2hpa(Monitor *mon, const QDict *qdict)
1507 {
1508 hwaddr addr = qdict_get_int(qdict, "addr");
1509 Error *local_err = NULL;
1510 MemoryRegion *mr = NULL;
1511 void *ptr;
1512 uint64_t physaddr;
1513
1514 ptr = gpa2hva(&mr, addr, &local_err);
1515 if (local_err) {
1516 error_report_err(local_err);
1517 return;
1518 }
1519
1520 physaddr = vtop(ptr, &local_err);
1521 if (local_err) {
1522 error_report_err(local_err);
1523 } else {
1524 monitor_printf(mon, "Host physical address for 0x%" HWADDR_PRIx
1525 " (%s) is 0x%" PRIx64 "\n",
1526 addr, mr->name, (uint64_t) physaddr);
1527 }
1528
1529 memory_region_unref(mr);
1530 }
1531 #endif
1532
1533 static void do_print(Monitor *mon, const QDict *qdict)
1534 {
1535 int format = qdict_get_int(qdict, "format");
1536 hwaddr val = qdict_get_int(qdict, "val");
1537
1538 switch(format) {
1539 case 'o':
1540 monitor_printf(mon, "%#" HWADDR_PRIo, val);
1541 break;
1542 case 'x':
1543 monitor_printf(mon, "%#" HWADDR_PRIx, val);
1544 break;
1545 case 'u':
1546 monitor_printf(mon, "%" HWADDR_PRIu, val);
1547 break;
1548 default:
1549 case 'd':
1550 monitor_printf(mon, "%" HWADDR_PRId, val);
1551 break;
1552 case 'c':
1553 monitor_printc(mon, val);
1554 break;
1555 }
1556 monitor_printf(mon, "\n");
1557 }
1558
1559 static void hmp_sum(Monitor *mon, const QDict *qdict)
1560 {
1561 uint32_t addr;
1562 uint16_t sum;
1563 uint32_t start = qdict_get_int(qdict, "start");
1564 uint32_t size = qdict_get_int(qdict, "size");
1565
1566 sum = 0;
1567 for(addr = start; addr < (start + size); addr++) {
1568 uint8_t val = address_space_ldub(&address_space_memory, addr,
1569 MEMTXATTRS_UNSPECIFIED, NULL);
1570 /* BSD sum algorithm ('sum' Unix command) */
1571 sum = (sum >> 1) | (sum << 15);
1572 sum += val;
1573 }
1574 monitor_printf(mon, "%05d\n", sum);
1575 }
1576
1577 static int mouse_button_state;
1578
1579 static void hmp_mouse_move(Monitor *mon, const QDict *qdict)
1580 {
1581 int dx, dy, dz, button;
1582 const char *dx_str = qdict_get_str(qdict, "dx_str");
1583 const char *dy_str = qdict_get_str(qdict, "dy_str");
1584 const char *dz_str = qdict_get_try_str(qdict, "dz_str");
1585
1586 dx = strtol(dx_str, NULL, 0);
1587 dy = strtol(dy_str, NULL, 0);
1588 qemu_input_queue_rel(NULL, INPUT_AXIS_X, dx);
1589 qemu_input_queue_rel(NULL, INPUT_AXIS_Y, dy);
1590
1591 if (dz_str) {
1592 dz = strtol(dz_str, NULL, 0);
1593 if (dz != 0) {
1594 button = (dz > 0) ? INPUT_BUTTON_WHEEL_UP : INPUT_BUTTON_WHEEL_DOWN;
1595 qemu_input_queue_btn(NULL, button, true);
1596 qemu_input_event_sync();
1597 qemu_input_queue_btn(NULL, button, false);
1598 }
1599 }
1600 qemu_input_event_sync();
1601 }
1602
1603 static void hmp_mouse_button(Monitor *mon, const QDict *qdict)
1604 {
1605 static uint32_t bmap[INPUT_BUTTON__MAX] = {
1606 [INPUT_BUTTON_LEFT] = MOUSE_EVENT_LBUTTON,
1607 [INPUT_BUTTON_MIDDLE] = MOUSE_EVENT_MBUTTON,
1608 [INPUT_BUTTON_RIGHT] = MOUSE_EVENT_RBUTTON,
1609 };
1610 int button_state = qdict_get_int(qdict, "button_state");
1611
1612 if (mouse_button_state == button_state) {
1613 return;
1614 }
1615 qemu_input_update_buttons(NULL, bmap, mouse_button_state, button_state);
1616 qemu_input_event_sync();
1617 mouse_button_state = button_state;
1618 }
1619
1620 static void hmp_ioport_read(Monitor *mon, const QDict *qdict)
1621 {
1622 int size = qdict_get_int(qdict, "size");
1623 int addr = qdict_get_int(qdict, "addr");
1624 int has_index = qdict_haskey(qdict, "index");
1625 uint32_t val;
1626 int suffix;
1627
1628 if (has_index) {
1629 int index = qdict_get_int(qdict, "index");
1630 cpu_outb(addr & IOPORTS_MASK, index & 0xff);
1631 addr++;
1632 }
1633 addr &= 0xffff;
1634
1635 switch(size) {
1636 default:
1637 case 1:
1638 val = cpu_inb(addr);
1639 suffix = 'b';
1640 break;
1641 case 2:
1642 val = cpu_inw(addr);
1643 suffix = 'w';
1644 break;
1645 case 4:
1646 val = cpu_inl(addr);
1647 suffix = 'l';
1648 break;
1649 }
1650 monitor_printf(mon, "port%c[0x%04x] = %#0*x\n",
1651 suffix, addr, size * 2, val);
1652 }
1653
1654 static void hmp_ioport_write(Monitor *mon, const QDict *qdict)
1655 {
1656 int size = qdict_get_int(qdict, "size");
1657 int addr = qdict_get_int(qdict, "addr");
1658 int val = qdict_get_int(qdict, "val");
1659
1660 addr &= IOPORTS_MASK;
1661
1662 switch (size) {
1663 default:
1664 case 1:
1665 cpu_outb(addr, val);
1666 break;
1667 case 2:
1668 cpu_outw(addr, val);
1669 break;
1670 case 4:
1671 cpu_outl(addr, val);
1672 break;
1673 }
1674 }
1675
1676 static void hmp_boot_set(Monitor *mon, const QDict *qdict)
1677 {
1678 Error *local_err = NULL;
1679 const char *bootdevice = qdict_get_str(qdict, "bootdevice");
1680
1681 qemu_boot_set(bootdevice, &local_err);
1682 if (local_err) {
1683 error_report_err(local_err);
1684 } else {
1685 monitor_printf(mon, "boot device list now set to %s\n", bootdevice);
1686 }
1687 }
1688
1689 static void hmp_info_mtree(Monitor *mon, const QDict *qdict)
1690 {
1691 bool flatview = qdict_get_try_bool(qdict, "flatview", false);
1692 bool dispatch_tree = qdict_get_try_bool(qdict, "dispatch_tree", false);
1693
1694 mtree_info((fprintf_function)monitor_printf, mon, flatview, dispatch_tree);
1695 }
1696
1697 static void hmp_info_numa(Monitor *mon, const QDict *qdict)
1698 {
1699 int i;
1700 NumaNodeMem *node_mem;
1701 CpuInfoList *cpu_list, *cpu;
1702
1703 cpu_list = qmp_query_cpus(&error_abort);
1704 node_mem = g_new0(NumaNodeMem, nb_numa_nodes);
1705
1706 query_numa_node_mem(node_mem);
1707 monitor_printf(mon, "%d nodes\n", nb_numa_nodes);
1708 for (i = 0; i < nb_numa_nodes; i++) {
1709 monitor_printf(mon, "node %d cpus:", i);
1710 for (cpu = cpu_list; cpu; cpu = cpu->next) {
1711 if (cpu->value->has_props && cpu->value->props->has_node_id &&
1712 cpu->value->props->node_id == i) {
1713 monitor_printf(mon, " %" PRIi64, cpu->value->CPU);
1714 }
1715 }
1716 monitor_printf(mon, "\n");
1717 monitor_printf(mon, "node %d size: %" PRId64 " MB\n", i,
1718 node_mem[i].node_mem >> 20);
1719 monitor_printf(mon, "node %d plugged: %" PRId64 " MB\n", i,
1720 node_mem[i].node_plugged_mem >> 20);
1721 }
1722 qapi_free_CpuInfoList(cpu_list);
1723 g_free(node_mem);
1724 }
1725
1726 #ifdef CONFIG_PROFILER
1727
1728 int64_t tcg_time;
1729 int64_t dev_time;
1730
1731 static void hmp_info_profile(Monitor *mon, const QDict *qdict)
1732 {
1733 monitor_printf(mon, "async time %" PRId64 " (%0.3f)\n",
1734 dev_time, dev_time / (double)NANOSECONDS_PER_SECOND);
1735 monitor_printf(mon, "qemu time %" PRId64 " (%0.3f)\n",
1736 tcg_time, tcg_time / (double)NANOSECONDS_PER_SECOND);
1737 tcg_time = 0;
1738 dev_time = 0;
1739 }
1740 #else
1741 static void hmp_info_profile(Monitor *mon, const QDict *qdict)
1742 {
1743 monitor_printf(mon, "Internal profiler not compiled\n");
1744 }
1745 #endif
1746
1747 /* Capture support */
1748 static QLIST_HEAD (capture_list_head, CaptureState) capture_head;
1749
1750 static void hmp_info_capture(Monitor *mon, const QDict *qdict)
1751 {
1752 int i;
1753 CaptureState *s;
1754
1755 for (s = capture_head.lh_first, i = 0; s; s = s->entries.le_next, ++i) {
1756 monitor_printf(mon, "[%d]: ", i);
1757 s->ops.info (s->opaque);
1758 }
1759 }
1760
1761 static void hmp_stopcapture(Monitor *mon, const QDict *qdict)
1762 {
1763 int i;
1764 int n = qdict_get_int(qdict, "n");
1765 CaptureState *s;
1766
1767 for (s = capture_head.lh_first, i = 0; s; s = s->entries.le_next, ++i) {
1768 if (i == n) {
1769 s->ops.destroy (s->opaque);
1770 QLIST_REMOVE (s, entries);
1771 g_free (s);
1772 return;
1773 }
1774 }
1775 }
1776
1777 static void hmp_wavcapture(Monitor *mon, const QDict *qdict)
1778 {
1779 const char *path = qdict_get_str(qdict, "path");
1780 int has_freq = qdict_haskey(qdict, "freq");
1781 int freq = qdict_get_try_int(qdict, "freq", -1);
1782 int has_bits = qdict_haskey(qdict, "bits");
1783 int bits = qdict_get_try_int(qdict, "bits", -1);
1784 int has_channels = qdict_haskey(qdict, "nchannels");
1785 int nchannels = qdict_get_try_int(qdict, "nchannels", -1);
1786 CaptureState *s;
1787
1788 s = g_malloc0 (sizeof (*s));
1789
1790 freq = has_freq ? freq : 44100;
1791 bits = has_bits ? bits : 16;
1792 nchannels = has_channels ? nchannels : 2;
1793
1794 if (wav_start_capture (s, path, freq, bits, nchannels)) {
1795 monitor_printf(mon, "Failed to add wave capture\n");
1796 g_free (s);
1797 return;
1798 }
1799 QLIST_INSERT_HEAD (&capture_head, s, entries);
1800 }
1801
1802 static qemu_acl *find_acl(Monitor *mon, const char *name)
1803 {
1804 qemu_acl *acl = qemu_acl_find(name);
1805
1806 if (!acl) {
1807 monitor_printf(mon, "acl: unknown list '%s'\n", name);
1808 }
1809 return acl;
1810 }
1811
1812 static void hmp_acl_show(Monitor *mon, const QDict *qdict)
1813 {
1814 const char *aclname = qdict_get_str(qdict, "aclname");
1815 qemu_acl *acl = find_acl(mon, aclname);
1816 qemu_acl_entry *entry;
1817 int i = 0;
1818
1819 if (acl) {
1820 monitor_printf(mon, "policy: %s\n",
1821 acl->defaultDeny ? "deny" : "allow");
1822 QTAILQ_FOREACH(entry, &acl->entries, next) {
1823 i++;
1824 monitor_printf(mon, "%d: %s %s\n", i,
1825 entry->deny ? "deny" : "allow", entry->match);
1826 }
1827 }
1828 }
1829
1830 static void hmp_acl_reset(Monitor *mon, const QDict *qdict)
1831 {
1832 const char *aclname = qdict_get_str(qdict, "aclname");
1833 qemu_acl *acl = find_acl(mon, aclname);
1834
1835 if (acl) {
1836 qemu_acl_reset(acl);
1837 monitor_printf(mon, "acl: removed all rules\n");
1838 }
1839 }
1840
1841 static void hmp_acl_policy(Monitor *mon, const QDict *qdict)
1842 {
1843 const char *aclname = qdict_get_str(qdict, "aclname");
1844 const char *policy = qdict_get_str(qdict, "policy");
1845 qemu_acl *acl = find_acl(mon, aclname);
1846
1847 if (acl) {
1848 if (strcmp(policy, "allow") == 0) {
1849 acl->defaultDeny = 0;
1850 monitor_printf(mon, "acl: policy set to 'allow'\n");
1851 } else if (strcmp(policy, "deny") == 0) {
1852 acl->defaultDeny = 1;
1853 monitor_printf(mon, "acl: policy set to 'deny'\n");
1854 } else {
1855 monitor_printf(mon, "acl: unknown policy '%s', "
1856 "expected 'deny' or 'allow'\n", policy);
1857 }
1858 }
1859 }
1860
1861 static void hmp_acl_add(Monitor *mon, const QDict *qdict)
1862 {
1863 const char *aclname = qdict_get_str(qdict, "aclname");
1864 const char *match = qdict_get_str(qdict, "match");
1865 const char *policy = qdict_get_str(qdict, "policy");
1866 int has_index = qdict_haskey(qdict, "index");
1867 int index = qdict_get_try_int(qdict, "index", -1);
1868 qemu_acl *acl = find_acl(mon, aclname);
1869 int deny, ret;
1870
1871 if (acl) {
1872 if (strcmp(policy, "allow") == 0) {
1873 deny = 0;
1874 } else if (strcmp(policy, "deny") == 0) {
1875 deny = 1;
1876 } else {
1877 monitor_printf(mon, "acl: unknown policy '%s', "
1878 "expected 'deny' or 'allow'\n", policy);
1879 return;
1880 }
1881 if (has_index)
1882 ret = qemu_acl_insert(acl, deny, match, index);
1883 else
1884 ret = qemu_acl_append(acl, deny, match);
1885 if (ret < 0)
1886 monitor_printf(mon, "acl: unable to add acl entry\n");
1887 else
1888 monitor_printf(mon, "acl: added rule at position %d\n", ret);
1889 }
1890 }
1891
1892 static void hmp_acl_remove(Monitor *mon, const QDict *qdict)
1893 {
1894 const char *aclname = qdict_get_str(qdict, "aclname");
1895 const char *match = qdict_get_str(qdict, "match");
1896 qemu_acl *acl = find_acl(mon, aclname);
1897 int ret;
1898
1899 if (acl) {
1900 ret = qemu_acl_remove(acl, match);
1901 if (ret < 0)
1902 monitor_printf(mon, "acl: no matching acl entry\n");
1903 else
1904 monitor_printf(mon, "acl: removed rule at position %d\n", ret);
1905 }
1906 }
1907
1908 void qmp_getfd(const char *fdname, Error **errp)
1909 {
1910 mon_fd_t *monfd;
1911 int fd;
1912
1913 fd = qemu_chr_fe_get_msgfd(&cur_mon->chr);
1914 if (fd == -1) {
1915 error_setg(errp, QERR_FD_NOT_SUPPLIED);
1916 return;
1917 }
1918
1919 if (qemu_isdigit(fdname[0])) {
1920 close(fd);
1921 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "fdname",
1922 "a name not starting with a digit");
1923 return;
1924 }
1925
1926 QLIST_FOREACH(monfd, &cur_mon->fds, next) {
1927 if (strcmp(monfd->name, fdname) != 0) {
1928 continue;
1929 }
1930
1931 close(monfd->fd);
1932 monfd->fd = fd;
1933 return;
1934 }
1935
1936 monfd = g_malloc0(sizeof(mon_fd_t));
1937 monfd->name = g_strdup(fdname);
1938 monfd->fd = fd;
1939
1940 QLIST_INSERT_HEAD(&cur_mon->fds, monfd, next);
1941 }
1942
1943 void qmp_closefd(const char *fdname, Error **errp)
1944 {
1945 mon_fd_t *monfd;
1946
1947 QLIST_FOREACH(monfd, &cur_mon->fds, next) {
1948 if (strcmp(monfd->name, fdname) != 0) {
1949 continue;
1950 }
1951
1952 QLIST_REMOVE(monfd, next);
1953 close(monfd->fd);
1954 g_free(monfd->name);
1955 g_free(monfd);
1956 return;
1957 }
1958
1959 error_setg(errp, QERR_FD_NOT_FOUND, fdname);
1960 }
1961
1962 int monitor_get_fd(Monitor *mon, const char *fdname, Error **errp)
1963 {
1964 mon_fd_t *monfd;
1965
1966 QLIST_FOREACH(monfd, &mon->fds, next) {
1967 int fd;
1968
1969 if (strcmp(monfd->name, fdname) != 0) {
1970 continue;
1971 }
1972
1973 fd = monfd->fd;
1974
1975 /* caller takes ownership of fd */
1976 QLIST_REMOVE(monfd, next);
1977 g_free(monfd->name);
1978 g_free(monfd);
1979
1980 return fd;
1981 }
1982
1983 error_setg(errp, "File descriptor named '%s' has not been found", fdname);
1984 return -1;
1985 }
1986
1987 static void monitor_fdset_cleanup(MonFdset *mon_fdset)
1988 {
1989 MonFdsetFd *mon_fdset_fd;
1990 MonFdsetFd *mon_fdset_fd_next;
1991
1992 QLIST_FOREACH_SAFE(mon_fdset_fd, &mon_fdset->fds, next, mon_fdset_fd_next) {
1993 if ((mon_fdset_fd->removed ||
1994 (QLIST_EMPTY(&mon_fdset->dup_fds) && mon_refcount == 0)) &&
1995 runstate_is_running()) {
1996 close(mon_fdset_fd->fd);
1997 g_free(mon_fdset_fd->opaque);
1998 QLIST_REMOVE(mon_fdset_fd, next);
1999 g_free(mon_fdset_fd);
2000 }
2001 }
2002
2003 if (QLIST_EMPTY(&mon_fdset->fds) && QLIST_EMPTY(&mon_fdset->dup_fds)) {
2004 QLIST_REMOVE(mon_fdset, next);
2005 g_free(mon_fdset);
2006 }
2007 }
2008
2009 static void monitor_fdsets_cleanup(void)
2010 {
2011 MonFdset *mon_fdset;
2012 MonFdset *mon_fdset_next;
2013
2014 QLIST_FOREACH_SAFE(mon_fdset, &mon_fdsets, next, mon_fdset_next) {
2015 monitor_fdset_cleanup(mon_fdset);
2016 }
2017 }
2018
2019 AddfdInfo *qmp_add_fd(bool has_fdset_id, int64_t fdset_id, bool has_opaque,
2020 const char *opaque, Error **errp)
2021 {
2022 int fd;
2023 Monitor *mon = cur_mon;
2024 AddfdInfo *fdinfo;
2025
2026 fd = qemu_chr_fe_get_msgfd(&mon->chr);
2027 if (fd == -1) {
2028 error_setg(errp, QERR_FD_NOT_SUPPLIED);
2029 goto error;
2030 }
2031
2032 fdinfo = monitor_fdset_add_fd(fd, has_fdset_id, fdset_id,
2033 has_opaque, opaque, errp);
2034 if (fdinfo) {
2035 return fdinfo;
2036 }
2037
2038 error:
2039 if (fd != -1) {
2040 close(fd);
2041 }
2042 return NULL;
2043 }
2044
2045 void qmp_remove_fd(int64_t fdset_id, bool has_fd, int64_t fd, Error **errp)
2046 {
2047 MonFdset *mon_fdset;
2048 MonFdsetFd *mon_fdset_fd;
2049 char fd_str[60];
2050
2051 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2052 if (mon_fdset->id != fdset_id) {
2053 continue;
2054 }
2055 QLIST_FOREACH(mon_fdset_fd, &mon_fdset->fds, next) {
2056 if (has_fd) {
2057 if (mon_fdset_fd->fd != fd) {
2058 continue;
2059 }
2060 mon_fdset_fd->removed = true;
2061 break;
2062 } else {
2063 mon_fdset_fd->removed = true;
2064 }
2065 }
2066 if (has_fd && !mon_fdset_fd) {
2067 goto error;
2068 }
2069 monitor_fdset_cleanup(mon_fdset);
2070 return;
2071 }
2072
2073 error:
2074 if (has_fd) {
2075 snprintf(fd_str, sizeof(fd_str), "fdset-id:%" PRId64 ", fd:%" PRId64,
2076 fdset_id, fd);
2077 } else {
2078 snprintf(fd_str, sizeof(fd_str), "fdset-id:%" PRId64, fdset_id);
2079 }
2080 error_setg(errp, QERR_FD_NOT_FOUND, fd_str);
2081 }
2082
2083 FdsetInfoList *qmp_query_fdsets(Error **errp)
2084 {
2085 MonFdset *mon_fdset;
2086 MonFdsetFd *mon_fdset_fd;
2087 FdsetInfoList *fdset_list = NULL;
2088
2089 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2090 FdsetInfoList *fdset_info = g_malloc0(sizeof(*fdset_info));
2091 FdsetFdInfoList *fdsetfd_list = NULL;
2092
2093 fdset_info->value = g_malloc0(sizeof(*fdset_info->value));
2094 fdset_info->value->fdset_id = mon_fdset->id;
2095
2096 QLIST_FOREACH(mon_fdset_fd, &mon_fdset->fds, next) {
2097 FdsetFdInfoList *fdsetfd_info;
2098
2099 fdsetfd_info = g_malloc0(sizeof(*fdsetfd_info));
2100 fdsetfd_info->value = g_malloc0(sizeof(*fdsetfd_info->value));
2101 fdsetfd_info->value->fd = mon_fdset_fd->fd;
2102 if (mon_fdset_fd->opaque) {
2103 fdsetfd_info->value->has_opaque = true;
2104 fdsetfd_info->value->opaque = g_strdup(mon_fdset_fd->opaque);
2105 } else {
2106 fdsetfd_info->value->has_opaque = false;
2107 }
2108
2109 fdsetfd_info->next = fdsetfd_list;
2110 fdsetfd_list = fdsetfd_info;
2111 }
2112
2113 fdset_info->value->fds = fdsetfd_list;
2114
2115 fdset_info->next = fdset_list;
2116 fdset_list = fdset_info;
2117 }
2118
2119 return fdset_list;
2120 }
2121
2122 AddfdInfo *monitor_fdset_add_fd(int fd, bool has_fdset_id, int64_t fdset_id,
2123 bool has_opaque, const char *opaque,
2124 Error **errp)
2125 {
2126 MonFdset *mon_fdset = NULL;
2127 MonFdsetFd *mon_fdset_fd;
2128 AddfdInfo *fdinfo;
2129
2130 if (has_fdset_id) {
2131 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2132 /* Break if match found or match impossible due to ordering by ID */
2133 if (fdset_id <= mon_fdset->id) {
2134 if (fdset_id < mon_fdset->id) {
2135 mon_fdset = NULL;
2136 }
2137 break;
2138 }
2139 }
2140 }
2141
2142 if (mon_fdset == NULL) {
2143 int64_t fdset_id_prev = -1;
2144 MonFdset *mon_fdset_cur = QLIST_FIRST(&mon_fdsets);
2145
2146 if (has_fdset_id) {
2147 if (fdset_id < 0) {
2148 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "fdset-id",
2149 "a non-negative value");
2150 return NULL;
2151 }
2152 /* Use specified fdset ID */
2153 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2154 mon_fdset_cur = mon_fdset;
2155 if (fdset_id < mon_fdset_cur->id) {
2156 break;
2157 }
2158 }
2159 } else {
2160 /* Use first available fdset ID */
2161 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2162 mon_fdset_cur = mon_fdset;
2163 if (fdset_id_prev == mon_fdset_cur->id - 1) {
2164 fdset_id_prev = mon_fdset_cur->id;
2165 continue;
2166 }
2167 break;
2168 }
2169 }
2170
2171 mon_fdset = g_malloc0(sizeof(*mon_fdset));
2172 if (has_fdset_id) {
2173 mon_fdset->id = fdset_id;
2174 } else {
2175 mon_fdset->id = fdset_id_prev + 1;
2176 }
2177
2178 /* The fdset list is ordered by fdset ID */
2179 if (!mon_fdset_cur) {
2180 QLIST_INSERT_HEAD(&mon_fdsets, mon_fdset, next);
2181 } else if (mon_fdset->id < mon_fdset_cur->id) {
2182 QLIST_INSERT_BEFORE(mon_fdset_cur, mon_fdset, next);
2183 } else {
2184 QLIST_INSERT_AFTER(mon_fdset_cur, mon_fdset, next);
2185 }
2186 }
2187
2188 mon_fdset_fd = g_malloc0(sizeof(*mon_fdset_fd));
2189 mon_fdset_fd->fd = fd;
2190 mon_fdset_fd->removed = false;
2191 if (has_opaque) {
2192 mon_fdset_fd->opaque = g_strdup(opaque);
2193 }
2194 QLIST_INSERT_HEAD(&mon_fdset->fds, mon_fdset_fd, next);
2195
2196 fdinfo = g_malloc0(sizeof(*fdinfo));
2197 fdinfo->fdset_id = mon_fdset->id;
2198 fdinfo->fd = mon_fdset_fd->fd;
2199
2200 return fdinfo;
2201 }
2202
2203 int monitor_fdset_get_fd(int64_t fdset_id, int flags)
2204 {
2205 #ifndef _WIN32
2206 MonFdset *mon_fdset;
2207 MonFdsetFd *mon_fdset_fd;
2208 int mon_fd_flags;
2209
2210 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2211 if (mon_fdset->id != fdset_id) {
2212 continue;
2213 }
2214 QLIST_FOREACH(mon_fdset_fd, &mon_fdset->fds, next) {
2215 mon_fd_flags = fcntl(mon_fdset_fd->fd, F_GETFL);
2216 if (mon_fd_flags == -1) {
2217 return -1;
2218 }
2219
2220 if ((flags & O_ACCMODE) == (mon_fd_flags & O_ACCMODE)) {
2221 return mon_fdset_fd->fd;
2222 }
2223 }
2224 errno = EACCES;
2225 return -1;
2226 }
2227 #endif
2228
2229 errno = ENOENT;
2230 return -1;
2231 }
2232
2233 int monitor_fdset_dup_fd_add(int64_t fdset_id, int dup_fd)
2234 {
2235 MonFdset *mon_fdset;
2236 MonFdsetFd *mon_fdset_fd_dup;
2237
2238 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2239 if (mon_fdset->id != fdset_id) {
2240 continue;
2241 }
2242 QLIST_FOREACH(mon_fdset_fd_dup, &mon_fdset->dup_fds, next) {
2243 if (mon_fdset_fd_dup->fd == dup_fd) {
2244 return -1;
2245 }
2246 }
2247 mon_fdset_fd_dup = g_malloc0(sizeof(*mon_fdset_fd_dup));
2248 mon_fdset_fd_dup->fd = dup_fd;
2249 QLIST_INSERT_HEAD(&mon_fdset->dup_fds, mon_fdset_fd_dup, next);
2250 return 0;
2251 }
2252 return -1;
2253 }
2254
2255 static int monitor_fdset_dup_fd_find_remove(int dup_fd, bool remove)
2256 {
2257 MonFdset *mon_fdset;
2258 MonFdsetFd *mon_fdset_fd_dup;
2259
2260 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2261 QLIST_FOREACH(mon_fdset_fd_dup, &mon_fdset->dup_fds, next) {
2262 if (mon_fdset_fd_dup->fd == dup_fd) {
2263 if (remove) {
2264 QLIST_REMOVE(mon_fdset_fd_dup, next);
2265 if (QLIST_EMPTY(&mon_fdset->dup_fds)) {
2266 monitor_fdset_cleanup(mon_fdset);
2267 }
2268 return -1;
2269 } else {
2270 return mon_fdset->id;
2271 }
2272 }
2273 }
2274 }
2275 return -1;
2276 }
2277
2278 int monitor_fdset_dup_fd_find(int dup_fd)
2279 {
2280 return monitor_fdset_dup_fd_find_remove(dup_fd, false);
2281 }
2282
2283 void monitor_fdset_dup_fd_remove(int dup_fd)
2284 {
2285 monitor_fdset_dup_fd_find_remove(dup_fd, true);
2286 }
2287
2288 int monitor_fd_param(Monitor *mon, const char *fdname, Error **errp)
2289 {
2290 int fd;
2291 Error *local_err = NULL;
2292
2293 if (!qemu_isdigit(fdname[0]) && mon) {
2294 fd = monitor_get_fd(mon, fdname, &local_err);
2295 } else {
2296 fd = qemu_parse_fd(fdname);
2297 if (fd == -1) {
2298 error_setg(&local_err, "Invalid file descriptor number '%s'",
2299 fdname);
2300 }
2301 }
2302 if (local_err) {
2303 error_propagate(errp, local_err);
2304 assert(fd == -1);
2305 } else {
2306 assert(fd != -1);
2307 }
2308
2309 return fd;
2310 }
2311
2312 /* Please update hmp-commands.hx when adding or changing commands */
2313 static mon_cmd_t info_cmds[] = {
2314 #include "hmp-commands-info.h"
2315 { NULL, NULL, },
2316 };
2317
2318 /* mon_cmds and info_cmds would be sorted at runtime */
2319 static mon_cmd_t mon_cmds[] = {
2320 #include "hmp-commands.h"
2321 { NULL, NULL, },
2322 };
2323
2324 /*******************************************************************/
2325
2326 static const char *pch;
2327 static sigjmp_buf expr_env;
2328
2329
2330 static void GCC_FMT_ATTR(2, 3) QEMU_NORETURN
2331 expr_error(Monitor *mon, const char *fmt, ...)
2332 {
2333 va_list ap;
2334 va_start(ap, fmt);
2335 monitor_vprintf(mon, fmt, ap);
2336 monitor_printf(mon, "\n");
2337 va_end(ap);
2338 siglongjmp(expr_env, 1);
2339 }
2340
2341 /* return 0 if OK, -1 if not found */
2342 static int get_monitor_def(target_long *pval, const char *name)
2343 {
2344 const MonitorDef *md = target_monitor_defs();
2345 CPUState *cs = mon_get_cpu();
2346 void *ptr;
2347 uint64_t tmp = 0;
2348 int ret;
2349
2350 if (cs == NULL || md == NULL) {
2351 return -1;
2352 }
2353
2354 for(; md->name != NULL; md++) {
2355 if (compare_cmd(name, md->name)) {
2356 if (md->get_value) {
2357 *pval = md->get_value(md, md->offset);
2358 } else {
2359 CPUArchState *env = mon_get_cpu_env();
2360 ptr = (uint8_t *)env + md->offset;
2361 switch(md->type) {
2362 case MD_I32:
2363 *pval = *(int32_t *)ptr;
2364 break;
2365 case MD_TLONG:
2366 *pval = *(target_long *)ptr;
2367 break;
2368 default:
2369 *pval = 0;
2370 break;
2371 }
2372 }
2373 return 0;
2374 }
2375 }
2376
2377 ret = target_get_monitor_def(cs, name, &tmp);
2378 if (!ret) {
2379 *pval = (target_long) tmp;
2380 }
2381
2382 return ret;
2383 }
2384
2385 static void next(void)
2386 {
2387 if (*pch != '\0') {
2388 pch++;
2389 while (qemu_isspace(*pch))
2390 pch++;
2391 }
2392 }
2393
2394 static int64_t expr_sum(Monitor *mon);
2395
2396 static int64_t expr_unary(Monitor *mon)
2397 {
2398 int64_t n;
2399 char *p;
2400 int ret;
2401
2402 switch(*pch) {
2403 case '+':
2404 next();
2405 n = expr_unary(mon);
2406 break;
2407 case '-':
2408 next();
2409 n = -expr_unary(mon);
2410 break;
2411 case '~':
2412 next();
2413 n = ~expr_unary(mon);
2414 break;
2415 case '(':
2416 next();
2417 n = expr_sum(mon);
2418 if (*pch != ')') {
2419 expr_error(mon, "')' expected");
2420 }
2421 next();
2422 break;
2423 case '\'':
2424 pch++;
2425 if (*pch == '\0')
2426 expr_error(mon, "character constant expected");
2427 n = *pch;
2428 pch++;
2429 if (*pch != '\'')
2430 expr_error(mon, "missing terminating \' character");
2431 next();
2432 break;
2433 case '$':
2434 {
2435 char buf[128], *q;
2436 target_long reg=0;
2437
2438 pch++;
2439 q = buf;
2440 while ((*pch >= 'a' && *pch <= 'z') ||
2441 (*pch >= 'A' && *pch <= 'Z') ||
2442 (*pch >= '0' && *pch <= '9') ||
2443 *pch == '_' || *pch == '.') {
2444 if ((q - buf) < sizeof(buf) - 1)
2445 *q++ = *pch;
2446 pch++;
2447 }
2448 while (qemu_isspace(*pch))
2449 pch++;
2450 *q = 0;
2451 ret = get_monitor_def(&reg, buf);
2452 if (ret < 0)
2453 expr_error(mon, "unknown register");
2454 n = reg;
2455 }
2456 break;
2457 case '\0':
2458 expr_error(mon, "unexpected end of expression");
2459 n = 0;
2460 break;
2461 default:
2462 errno = 0;
2463 n = strtoull(pch, &p, 0);
2464 if (errno == ERANGE) {
2465 expr_error(mon, "number too large");
2466 }
2467 if (pch == p) {
2468 expr_error(mon, "invalid char '%c' in expression", *p);
2469 }
2470 pch = p;
2471 while (qemu_isspace(*pch))
2472 pch++;
2473 break;
2474 }
2475 return n;
2476 }
2477
2478
2479 static int64_t expr_prod(Monitor *mon)
2480 {
2481 int64_t val, val2;
2482 int op;
2483
2484 val = expr_unary(mon);
2485 for(;;) {
2486 op = *pch;
2487 if (op != '*' && op != '/' && op != '%')
2488 break;
2489 next();
2490 val2 = expr_unary(mon);
2491 switch(op) {
2492 default:
2493 case '*':
2494 val *= val2;
2495 break;
2496 case '/':
2497 case '%':
2498 if (val2 == 0)
2499 expr_error(mon, "division by zero");
2500 if (op == '/')
2501 val /= val2;
2502 else
2503 val %= val2;
2504 break;
2505 }
2506 }
2507 return val;
2508 }
2509
2510 static int64_t expr_logic(Monitor *mon)
2511 {
2512 int64_t val, val2;
2513 int op;
2514
2515 val = expr_prod(mon);
2516 for(;;) {
2517 op = *pch;
2518 if (op != '&' && op != '|' && op != '^')
2519 break;
2520 next();
2521 val2 = expr_prod(mon);
2522 switch(op) {
2523 default:
2524 case '&':
2525 val &= val2;
2526 break;
2527 case '|':
2528 val |= val2;
2529 break;
2530 case '^':
2531 val ^= val2;
2532 break;
2533 }
2534 }
2535 return val;
2536 }
2537
2538 static int64_t expr_sum(Monitor *mon)
2539 {
2540 int64_t val, val2;
2541 int op;
2542
2543 val = expr_logic(mon);
2544 for(;;) {
2545 op = *pch;
2546 if (op != '+' && op != '-')
2547 break;
2548 next();
2549 val2 = expr_logic(mon);
2550 if (op == '+')
2551 val += val2;
2552 else
2553 val -= val2;
2554 }
2555 return val;
2556 }
2557
2558 static int get_expr(Monitor *mon, int64_t *pval, const char **pp)
2559 {
2560 pch = *pp;
2561 if (sigsetjmp(expr_env, 0)) {
2562 *pp = pch;
2563 return -1;
2564 }
2565 while (qemu_isspace(*pch))
2566 pch++;
2567 *pval = expr_sum(mon);
2568 *pp = pch;
2569 return 0;
2570 }
2571
2572 static int get_double(Monitor *mon, double *pval, const char **pp)
2573 {
2574 const char *p = *pp;
2575 char *tailp;
2576 double d;
2577
2578 d = strtod(p, &tailp);
2579 if (tailp == p) {
2580 monitor_printf(mon, "Number expected\n");
2581 return -1;
2582 }
2583 if (d != d || d - d != 0) {
2584 /* NaN or infinity */
2585 monitor_printf(mon, "Bad number\n");
2586 return -1;
2587 }
2588 *pval = d;
2589 *pp = tailp;
2590 return 0;
2591 }
2592
2593 /*
2594 * Store the command-name in cmdname, and return a pointer to
2595 * the remaining of the command string.
2596 */
2597 static const char *get_command_name(const char *cmdline,
2598 char *cmdname, size_t nlen)
2599 {
2600 size_t len;
2601 const char *p, *pstart;
2602
2603 p = cmdline;
2604 while (qemu_isspace(*p))
2605 p++;
2606 if (*p == '\0')
2607 return NULL;
2608 pstart = p;
2609 while (*p != '\0' && *p != '/' && !qemu_isspace(*p))
2610 p++;
2611 len = p - pstart;
2612 if (len > nlen - 1)
2613 len = nlen - 1;
2614 memcpy(cmdname, pstart, len);
2615 cmdname[len] = '\0';
2616 return p;
2617 }
2618
2619 /**
2620 * Read key of 'type' into 'key' and return the current
2621 * 'type' pointer.
2622 */
2623 static char *key_get_info(const char *type, char **key)
2624 {
2625 size_t len;
2626 char *p, *str;
2627
2628 if (*type == ',')
2629 type++;
2630
2631 p = strchr(type, ':');
2632 if (!p) {
2633 *key = NULL;
2634 return NULL;
2635 }
2636 len = p - type;
2637
2638 str = g_malloc(len + 1);
2639 memcpy(str, type, len);
2640 str[len] = '\0';
2641
2642 *key = str;
2643 return ++p;
2644 }
2645
2646 static int default_fmt_format = 'x';
2647 static int default_fmt_size = 4;
2648
2649 static int is_valid_option(const char *c, const char *typestr)
2650 {
2651 char option[3];
2652
2653 option[0] = '-';
2654 option[1] = *c;
2655 option[2] = '\0';
2656
2657 typestr = strstr(typestr, option);
2658 return (typestr != NULL);
2659 }
2660
2661 static const mon_cmd_t *search_dispatch_table(const mon_cmd_t *disp_table,
2662 const char *cmdname)
2663 {
2664 const mon_cmd_t *cmd;
2665
2666 for (cmd = disp_table; cmd->name != NULL; cmd++) {
2667 if (compare_cmd(cmdname, cmd->name)) {
2668 return cmd;
2669 }
2670 }
2671
2672 return NULL;
2673 }
2674
2675 /*
2676 * Parse command name from @cmdp according to command table @table.
2677 * If blank, return NULL.
2678 * Else, if no valid command can be found, report to @mon, and return
2679 * NULL.
2680 * Else, change @cmdp to point right behind the name, and return its
2681 * command table entry.
2682 * Do not assume the return value points into @table! It doesn't when
2683 * the command is found in a sub-command table.
2684 */
2685 static const mon_cmd_t *monitor_parse_command(Monitor *mon,
2686 const char *cmdp_start,
2687 const char **cmdp,
2688 mon_cmd_t *table)
2689 {
2690 const char *p;
2691 const mon_cmd_t *cmd;
2692 char cmdname[256];
2693
2694 /* extract the command name */
2695 p = get_command_name(*cmdp, cmdname, sizeof(cmdname));
2696 if (!p)
2697 return NULL;
2698
2699 cmd = search_dispatch_table(table, cmdname);
2700 if (!cmd) {
2701 monitor_printf(mon, "unknown command: '%.*s'\n",
2702 (int)(p - cmdp_start), cmdp_start);
2703 return NULL;
2704 }
2705
2706 /* filter out following useless space */
2707 while (qemu_isspace(*p)) {
2708 p++;
2709 }
2710
2711 *cmdp = p;
2712 /* search sub command */
2713 if (cmd->sub_table != NULL && *p != '\0') {
2714 return monitor_parse_command(mon, cmdp_start, cmdp, cmd->sub_table);
2715 }
2716
2717 return cmd;
2718 }
2719
2720 /*
2721 * Parse arguments for @cmd.
2722 * If it can't be parsed, report to @mon, and return NULL.
2723 * Else, insert command arguments into a QDict, and return it.
2724 * Note: On success, caller has to free the QDict structure.
2725 */
2726
2727 static QDict *monitor_parse_arguments(Monitor *mon,
2728 const char **endp,
2729 const mon_cmd_t *cmd)
2730 {
2731 const char *typestr;
2732 char *key;
2733 int c;
2734 const char *p = *endp;
2735 char buf[1024];
2736 QDict *qdict = qdict_new();
2737
2738 /* parse the parameters */
2739 typestr = cmd->args_type;
2740 for(;;) {
2741 typestr = key_get_info(typestr, &key);
2742 if (!typestr)
2743 break;
2744 c = *typestr;
2745 typestr++;
2746 switch(c) {
2747 case 'F':
2748 case 'B':
2749 case 's':
2750 {
2751 int ret;
2752
2753 while (qemu_isspace(*p))
2754 p++;
2755 if (*typestr == '?') {
2756 typestr++;
2757 if (*p == '\0') {
2758 /* no optional string: NULL argument */
2759 break;
2760 }
2761 }
2762 ret = get_str(buf, sizeof(buf), &p);
2763 if (ret < 0) {
2764 switch(c) {
2765 case 'F':
2766 monitor_printf(mon, "%s: filename expected\n",
2767 cmd->name);
2768 break;
2769 case 'B':
2770 monitor_printf(mon, "%s: block device name expected\n",
2771 cmd->name);
2772 break;
2773 default:
2774 monitor_printf(mon, "%s: string expected\n", cmd->name);
2775 break;
2776 }
2777 goto fail;
2778 }
2779 qdict_put_str(qdict, key, buf);
2780 }
2781 break;
2782 case 'O':
2783 {
2784 QemuOptsList *opts_list;
2785 QemuOpts *opts;
2786
2787 opts_list = qemu_find_opts(key);
2788 if (!opts_list || opts_list->desc->name) {
2789 goto bad_type;
2790 }
2791 while (qemu_isspace(*p)) {
2792 p++;
2793 }
2794 if (!*p)
2795 break;
2796 if (get_str(buf, sizeof(buf), &p) < 0) {
2797 goto fail;
2798 }
2799 opts = qemu_opts_parse_noisily(opts_list, buf, true);
2800 if (!opts) {
2801 goto fail;
2802 }
2803 qemu_opts_to_qdict(opts, qdict);
2804 qemu_opts_del(opts);
2805 }
2806 break;
2807 case '/':
2808 {
2809 int count, format, size;
2810
2811 while (qemu_isspace(*p))
2812 p++;
2813 if (*p == '/') {
2814 /* format found */
2815 p++;
2816 count = 1;
2817 if (qemu_isdigit(*p)) {
2818 count = 0;
2819 while (qemu_isdigit(*p)) {
2820 count = count * 10 + (*p - '0');
2821 p++;
2822 }
2823 }
2824 size = -1;
2825 format = -1;
2826 for(;;) {
2827 switch(*p) {
2828 case 'o':
2829 case 'd':
2830 case 'u':
2831 case 'x':
2832 case 'i':
2833 case 'c':
2834 format = *p++;
2835 break;
2836 case 'b':
2837 size = 1;
2838 p++;
2839 break;
2840 case 'h':
2841 size = 2;
2842 p++;
2843 break;
2844 case 'w':
2845 size = 4;
2846 p++;
2847 break;
2848 case 'g':
2849 case 'L':
2850 size = 8;
2851 p++;
2852 break;
2853 default:
2854 goto next;
2855 }
2856 }
2857 next:
2858 if (*p != '\0' && !qemu_isspace(*p)) {
2859 monitor_printf(mon, "invalid char in format: '%c'\n",
2860 *p);
2861 goto fail;
2862 }
2863 if (format < 0)
2864 format = default_fmt_format;
2865 if (format != 'i') {
2866 /* for 'i', not specifying a size gives -1 as size */
2867 if (size < 0)
2868 size = default_fmt_size;
2869 default_fmt_size = size;
2870 }
2871 default_fmt_format = format;
2872 } else {
2873 count = 1;
2874 format = default_fmt_format;
2875 if (format != 'i') {
2876 size = default_fmt_size;
2877 } else {
2878 size = -1;
2879 }
2880 }
2881 qdict_put_int(qdict, "count", count);
2882 qdict_put_int(qdict, "format", format);
2883 qdict_put_int(qdict, "size", size);
2884 }
2885 break;
2886 case 'i':
2887 case 'l':
2888 case 'M':
2889 {
2890 int64_t val;
2891
2892 while (qemu_isspace(*p))
2893 p++;
2894 if (*typestr == '?' || *typestr == '.') {
2895 if (*typestr == '?') {
2896 if (*p == '\0') {
2897 typestr++;
2898 break;
2899 }
2900 } else {
2901 if (*p == '.') {
2902 p++;
2903 while (qemu_isspace(*p))
2904 p++;
2905 } else {
2906 typestr++;
2907 break;
2908 }
2909 }
2910 typestr++;
2911 }
2912 if (get_expr(mon, &val, &p))
2913 goto fail;
2914 /* Check if 'i' is greater than 32-bit */
2915 if ((c == 'i') && ((val >> 32) & 0xffffffff)) {
2916 monitor_printf(mon, "\'%s\' has failed: ", cmd->name);
2917 monitor_printf(mon, "integer is for 32-bit values\n");
2918 goto fail;
2919 } else if (c == 'M') {
2920 if (val < 0) {
2921 monitor_printf(mon, "enter a positive value\n");
2922 goto fail;
2923 }
2924 val <<= 20;
2925 }
2926 qdict_put_int(qdict, key, val);
2927 }
2928 break;
2929 case 'o':
2930 {
2931 int ret;
2932 uint64_t val;
2933 char *end;
2934
2935 while (qemu_isspace(*p)) {
2936 p++;
2937 }
2938 if (*typestr == '?') {
2939 typestr++;
2940 if (*p == '\0') {
2941 break;
2942 }
2943 }
2944 ret = qemu_strtosz_MiB(p, &end, &val);
2945 if (ret < 0 || val > INT64_MAX) {
2946 monitor_printf(mon, "invalid size\n");
2947 goto fail;
2948 }
2949 qdict_put_int(qdict, key, val);
2950 p = end;
2951 }
2952 break;
2953 case 'T':
2954 {
2955 double val;
2956
2957 while (qemu_isspace(*p))
2958 p++;
2959 if (*typestr == '?') {
2960 typestr++;
2961 if (*p == '\0') {
2962 break;
2963 }
2964 }
2965 if (get_double(mon, &val, &p) < 0) {
2966 goto fail;
2967 }
2968 if (p[0] && p[1] == 's') {
2969 switch (*p) {
2970 case 'm':
2971 val /= 1e3; p += 2; break;
2972 case 'u':
2973 val /= 1e6; p += 2; break;
2974 case 'n':
2975 val /= 1e9; p += 2; break;
2976 }
2977 }
2978 if (*p && !qemu_isspace(*p)) {
2979 monitor_printf(mon, "Unknown unit suffix\n");
2980 goto fail;
2981 }
2982 qdict_put(qdict, key, qnum_from_double(val));
2983 }
2984 break;
2985 case 'b':
2986 {
2987 const char *beg;
2988 bool val;
2989
2990 while (qemu_isspace(*p)) {
2991 p++;
2992 }
2993 beg = p;
2994 while (qemu_isgraph(*p)) {
2995 p++;
2996 }
2997 if (p - beg == 2 && !memcmp(beg, "on", p - beg)) {
2998 val = true;
2999 } else if (p - beg == 3 && !memcmp(beg, "off", p - beg)) {
3000 val = false;
3001 } else {
3002 monitor_printf(mon, "Expected 'on' or 'off'\n");
3003 goto fail;
3004 }
3005 qdict_put_bool(qdict, key, val);
3006 }
3007 break;
3008 case '-':
3009 {
3010 const char *tmp = p;
3011 int skip_key = 0;
3012 /* option */
3013
3014 c = *typestr++;
3015 if (c == '\0')
3016 goto bad_type;
3017 while (qemu_isspace(*p))
3018 p++;
3019 if (*p == '-') {
3020 p++;
3021 if(c != *p) {
3022 if(!is_valid_option(p, typestr)) {
3023
3024 monitor_printf(mon, "%s: unsupported option -%c\n",
3025 cmd->name, *p);
3026 goto fail;
3027 } else {
3028 skip_key = 1;
3029 }
3030 }
3031 if(skip_key) {
3032 p = tmp;
3033 } else {
3034 /* has option */
3035 p++;
3036 qdict_put_bool(qdict, key, true);
3037 }
3038 }
3039 }
3040 break;
3041 case 'S':
3042 {
3043 /* package all remaining string */
3044 int len;
3045
3046 while (qemu_isspace(*p)) {
3047 p++;
3048 }
3049 if (*typestr == '?') {
3050 typestr++;
3051 if (*p == '\0') {
3052 /* no remaining string: NULL argument */
3053 break;
3054 }
3055 }
3056 len = strlen(p);
3057 if (len <= 0) {
3058 monitor_printf(mon, "%s: string expected\n",
3059 cmd->name);
3060 goto fail;
3061 }
3062 qdict_put_str(qdict, key, p);
3063 p += len;
3064 }
3065 break;
3066 default:
3067 bad_type:
3068 monitor_printf(mon, "%s: unknown type '%c'\n", cmd->name, c);
3069 goto fail;
3070 }
3071 g_free(key);
3072 key = NULL;
3073 }
3074 /* check that all arguments were parsed */
3075 while (qemu_isspace(*p))
3076 p++;
3077 if (*p != '\0') {
3078 monitor_printf(mon, "%s: extraneous characters at the end of line\n",
3079 cmd->name);
3080 goto fail;
3081 }
3082
3083 return qdict;
3084
3085 fail:
3086 QDECREF(qdict);
3087 g_free(key);
3088 return NULL;
3089 }
3090
3091 static void handle_hmp_command(Monitor *mon, const char *cmdline)
3092 {
3093 QDict *qdict;
3094 const mon_cmd_t *cmd;
3095
3096 trace_handle_hmp_command(mon, cmdline);
3097
3098 cmd = monitor_parse_command(mon, cmdline, &cmdline, mon->cmd_table);
3099 if (!cmd) {
3100 return;
3101 }
3102
3103 qdict = monitor_parse_arguments(mon, &cmdline, cmd);
3104 if (!qdict) {
3105 monitor_printf(mon, "Try \"help %s\" for more information\n",
3106 cmd->name);
3107 return;
3108 }
3109
3110 cmd->cmd(mon, qdict);
3111 QDECREF(qdict);
3112 }
3113
3114 static void cmd_completion(Monitor *mon, const char *name, const char *list)
3115 {
3116 const char *p, *pstart;
3117 char cmd[128];
3118 int len;
3119
3120 p = list;
3121 for(;;) {
3122 pstart = p;
3123 p = strchr(p, '|');
3124 if (!p)
3125 p = pstart + strlen(pstart);
3126 len = p - pstart;
3127 if (len > sizeof(cmd) - 2)
3128 len = sizeof(cmd) - 2;
3129 memcpy(cmd, pstart, len);
3130 cmd[len] = '\0';
3131 if (name[0] == '\0' || !strncmp(name, cmd, strlen(name))) {
3132 readline_add_completion(mon->rs, cmd);
3133 }
3134 if (*p == '\0')
3135 break;
3136 p++;
3137 }
3138 }
3139
3140 static void file_completion(Monitor *mon, const char *input)
3141 {
3142 DIR *ffs;
3143 struct dirent *d;
3144 char path[1024];
3145 char file[1024], file_prefix[1024];
3146 int input_path_len;
3147 const char *p;
3148
3149 p = strrchr(input, '/');
3150 if (!p) {
3151 input_path_len = 0;
3152 pstrcpy(file_prefix, sizeof(file_prefix), input);
3153 pstrcpy(path, sizeof(path), ".");
3154 } else {
3155 input_path_len = p - input + 1;
3156 memcpy(path, input, input_path_len);
3157 if (input_path_len > sizeof(path) - 1)
3158 input_path_len = sizeof(path) - 1;
3159 path[input_path_len] = '\0';
3160 pstrcpy(file_prefix, sizeof(file_prefix), p + 1);
3161 }
3162
3163 ffs = opendir(path);
3164 if (!ffs)
3165 return;
3166 for(;;) {
3167 struct stat sb;
3168 d = readdir(ffs);
3169 if (!d)
3170 break;
3171
3172 if (strcmp(d->d_name, ".") == 0 || strcmp(d->d_name, "..") == 0) {
3173 continue;
3174 }
3175
3176 if (strstart(d->d_name, file_prefix, NULL)) {
3177 memcpy(file, input, input_path_len);
3178 if (input_path_len < sizeof(file))
3179 pstrcpy(file + input_path_len, sizeof(file) - input_path_len,
3180 d->d_name);
3181 /* stat the file to find out if it's a directory.
3182 * In that case add a slash to speed up typing long paths
3183 */
3184 if (stat(file, &sb) == 0 && S_ISDIR(sb.st_mode)) {
3185 pstrcat(file, sizeof(file), "/");
3186 }
3187 readline_add_completion(mon->rs, file);
3188 }
3189 }
3190 closedir(ffs);
3191 }
3192
3193 static const char *next_arg_type(const char *typestr)
3194 {
3195 const char *p = strchr(typestr, ':');
3196 return (p != NULL ? ++p : typestr);
3197 }
3198
3199 static void add_completion_option(ReadLineState *rs, const char *str,
3200 const char *option)
3201 {
3202 if (!str || !option) {
3203 return;
3204 }
3205 if (!strncmp(option, str, strlen(str))) {
3206 readline_add_completion(rs, option);
3207 }
3208 }
3209
3210 void chardev_add_completion(ReadLineState *rs, int nb_args, const char *str)
3211 {
3212 size_t len;
3213 ChardevBackendInfoList *list, *start;
3214
3215 if (nb_args != 2) {
3216 return;
3217 }
3218 len = strlen(str);
3219 readline_set_completion_index(rs, len);
3220
3221 start = list = qmp_query_chardev_backends(NULL);
3222 while (list) {
3223 const char *chr_name = list->value->name;
3224
3225 if (!strncmp(chr_name, str, len)) {
3226 readline_add_completion(rs, chr_name);
3227 }
3228 list = list->next;
3229 }
3230 qapi_free_ChardevBackendInfoList(start);
3231 }
3232
3233 void netdev_add_completion(ReadLineState *rs, int nb_args, const char *str)
3234 {
3235 size_t len;
3236 int i;
3237
3238 if (nb_args != 2) {
3239 return;
3240 }
3241 len = strlen(str);
3242 readline_set_completion_index(rs, len);
3243 for (i = 0; i < NET_CLIENT_DRIVER__MAX; i++) {
3244 add_completion_option(rs, str, NetClientDriver_str(i));
3245 }
3246 }
3247
3248 void device_add_completion(ReadLineState *rs, int nb_args, const char *str)
3249 {
3250 GSList *list, *elt;
3251 size_t len;
3252
3253 if (nb_args != 2) {
3254 return;
3255 }
3256
3257 len = strlen(str);
3258 readline_set_completion_index(rs, len);
3259 list = elt = object_class_get_list(TYPE_DEVICE, false);
3260 while (elt) {
3261 const char *name;
3262 DeviceClass *dc = OBJECT_CLASS_CHECK(DeviceClass, elt->data,
3263 TYPE_DEVICE);
3264 name = object_class_get_name(OBJECT_CLASS(dc));
3265
3266 if (dc->user_creatable
3267 && !strncmp(name, str, len)) {
3268 readline_add_completion(rs, name);
3269 }
3270 elt = elt->next;
3271 }
3272 g_slist_free(list);
3273 }
3274
3275 void object_add_completion(ReadLineState *rs, int nb_args, const char *str)
3276 {
3277 GSList *list, *elt;
3278 size_t len;
3279
3280 if (nb_args != 2) {
3281 return;
3282 }
3283
3284 len = strlen(str);
3285 readline_set_completion_index(rs, len);
3286 list = elt = object_class_get_list(TYPE_USER_CREATABLE, false);
3287 while (elt) {
3288 const char *name;
3289
3290 name = object_class_get_name(OBJECT_CLASS(elt->data));
3291 if (!strncmp(name, str, len) && strcmp(name, TYPE_USER_CREATABLE)) {
3292 readline_add_completion(rs, name);
3293 }
3294 elt = elt->next;
3295 }
3296 g_slist_free(list);
3297 }
3298
3299 static void peripheral_device_del_completion(ReadLineState *rs,
3300 const char *str, size_t len)
3301 {
3302 Object *peripheral = container_get(qdev_get_machine(), "/peripheral");
3303 GSList *list, *item;
3304
3305 list = qdev_build_hotpluggable_device_list(peripheral);
3306 if (!list) {
3307 return;
3308 }
3309
3310 for (item = list; item; item = g_slist_next(item)) {
3311 DeviceState *dev = item->data;
3312
3313 if (dev->id && !strncmp(str, dev->id, len)) {
3314 readline_add_completion(rs, dev->id);
3315 }
3316 }
3317
3318 g_slist_free(list);
3319 }
3320
3321 void chardev_remove_completion(ReadLineState *rs, int nb_args, const char *str)
3322 {
3323 size_t len;
3324 ChardevInfoList *list, *start;
3325
3326 if (nb_args != 2) {
3327 return;
3328 }
3329 len = strlen(str);
3330 readline_set_completion_index(rs, len);
3331
3332 start = list = qmp_query_chardev(NULL);
3333 while (list) {
3334 ChardevInfo *chr = list->value;
3335
3336 if (!strncmp(chr->label, str, len)) {
3337 readline_add_completion(rs, chr->label);
3338 }
3339 list = list->next;
3340 }
3341 qapi_free_ChardevInfoList(start);
3342 }
3343
3344 static void ringbuf_completion(ReadLineState *rs, const char *str)
3345 {
3346 size_t len;
3347 ChardevInfoList *list, *start;
3348
3349 len = strlen(str);
3350 readline_set_completion_index(rs, len);
3351
3352 start = list = qmp_query_chardev(NULL);
3353 while (list) {
3354 ChardevInfo *chr_info = list->value;
3355
3356 if (!strncmp(chr_info->label, str, len)) {
3357 Chardev *chr = qemu_chr_find(chr_info->label);
3358 if (chr && CHARDEV_IS_RINGBUF(chr)) {
3359 readline_add_completion(rs, chr_info->label);
3360 }
3361 }
3362 list = list->next;
3363 }
3364 qapi_free_ChardevInfoList(start);
3365 }
3366
3367 void ringbuf_write_completion(ReadLineState *rs, int nb_args, const char *str)
3368 {
3369 if (nb_args != 2) {
3370 return;
3371 }
3372 ringbuf_completion(rs, str);
3373 }
3374
3375 void device_del_completion(ReadLineState *rs, int nb_args, const char *str)
3376 {
3377 size_t len;
3378
3379 if (nb_args != 2) {
3380 return;
3381 }
3382
3383 len = strlen(str);
3384 readline_set_completion_index(rs, len);
3385 peripheral_device_del_completion(rs, str, len);
3386 }
3387
3388 void object_del_completion(ReadLineState *rs, int nb_args, const char *str)
3389 {
3390 ObjectPropertyInfoList *list, *start;
3391 size_t len;
3392
3393 if (nb_args != 2) {
3394 return;
3395 }
3396 len = strlen(str);
3397 readline_set_completion_index(rs, len);
3398
3399 start = list = qmp_qom_list("/objects", NULL);
3400 while (list) {
3401 ObjectPropertyInfo *info = list->value;
3402
3403 if (!strncmp(info->type, "child<", 5)
3404 && !strncmp(info->name, str, len)) {
3405 readline_add_completion(rs, info->name);
3406 }
3407 list = list->next;
3408 }
3409 qapi_free_ObjectPropertyInfoList(start);
3410 }
3411
3412 void sendkey_completion(ReadLineState *rs, int nb_args, const char *str)
3413 {
3414 int i;
3415 char *sep;
3416 size_t len;
3417
3418 if (nb_args != 2) {
3419 return;
3420 }
3421 sep = strrchr(str, '-');
3422 if (sep) {
3423 str = sep + 1;
3424 }
3425 len = strlen(str);
3426 readline_set_completion_index(rs, len);
3427 for (i = 0; i < Q_KEY_CODE__MAX; i++) {
3428 if (!strncmp(str, QKeyCode_str(i), len)) {
3429 readline_add_completion(rs, QKeyCode_str(i));
3430 }
3431 }
3432 }
3433
3434 void set_link_completion(ReadLineState *rs, int nb_args, const char *str)
3435 {
3436 size_t len;
3437
3438 len = strlen(str);
3439 readline_set_completion_index(rs, len);
3440 if (nb_args == 2) {
3441 NetClientState *ncs[MAX_QUEUE_NUM];
3442 int count, i;
3443 count = qemu_find_net_clients_except(NULL, ncs,
3444 NET_CLIENT_DRIVER_NONE,
3445 MAX_QUEUE_NUM);
3446 for (i = 0; i < MIN(count, MAX_QUEUE_NUM); i++) {
3447 const char *name = ncs[i]->name;
3448 if (!strncmp(str, name, len)) {
3449 readline_add_completion(rs, name);
3450 }
3451 }
3452 } else if (nb_args == 3) {
3453 add_completion_option(rs, str, "on");
3454 add_completion_option(rs, str, "off");
3455 }
3456 }
3457
3458 void netdev_del_completion(ReadLineState *rs, int nb_args, const char *str)
3459 {
3460 int len, count, i;
3461 NetClientState *ncs[MAX_QUEUE_NUM];
3462
3463 if (nb_args != 2) {
3464 return;
3465 }
3466
3467 len = strlen(str);
3468 readline_set_completion_index(rs, len);
3469 count = qemu_find_net_clients_except(NULL, ncs, NET_CLIENT_DRIVER_NIC,
3470 MAX_QUEUE_NUM);
3471 for (i = 0; i < MIN(count, MAX_QUEUE_NUM); i++) {
3472 QemuOpts *opts;
3473 const char *name = ncs[i]->name;
3474 if (strncmp(str, name, len)) {
3475 continue;
3476 }
3477 opts = qemu_opts_find(qemu_find_opts_err("netdev", NULL), name);
3478 if (opts) {
3479 readline_add_completion(rs, name);
3480 }
3481 }
3482 }
3483
3484 void info_trace_events_completion(ReadLineState *rs, int nb_args, const char *str)
3485 {
3486 size_t len;
3487
3488 len = strlen(str);
3489 readline_set_completion_index(rs, len);
3490 if (nb_args == 2) {
3491 TraceEventIter iter;
3492 TraceEvent *ev;
3493 char *pattern = g_strdup_printf("%s*", str);
3494 trace_event_iter_init(&iter, pattern);
3495 while ((ev = trace_event_iter_next(&iter)) != NULL) {
3496 readline_add_completion(rs, trace_event_get_name(ev));
3497 }
3498 g_free(pattern);
3499 }
3500 }
3501
3502 void trace_event_completion(ReadLineState *rs, int nb_args, const char *str)
3503 {
3504 size_t len;
3505
3506 len = strlen(str);
3507 readline_set_completion_index(rs, len);
3508 if (nb_args == 2) {
3509 TraceEventIter iter;
3510 TraceEvent *ev;
3511 char *pattern = g_strdup_printf("%s*", str);
3512 trace_event_iter_init(&iter, pattern);
3513 while ((ev = trace_event_iter_next(&iter)) != NULL) {
3514 readline_add_completion(rs, trace_event_get_name(ev));
3515 }
3516 g_free(pattern);
3517 } else if (nb_args == 3) {
3518 add_completion_option(rs, str, "on");
3519 add_completion_option(rs, str, "off");
3520 }
3521 }
3522
3523 void watchdog_action_completion(ReadLineState *rs, int nb_args, const char *str)
3524 {
3525 int i;
3526
3527 if (nb_args != 2) {
3528 return;
3529 }
3530 readline_set_completion_index(rs, strlen(str));
3531 for (i = 0; i < WATCHDOG_ACTION__MAX; i++) {
3532 add_completion_option(rs, str, WatchdogAction_str(i));
3533 }
3534 }
3535
3536 void migrate_set_capability_completion(ReadLineState *rs, int nb_args,
3537 const char *str)
3538 {
3539 size_t len;
3540
3541 len = strlen(str);
3542 readline_set_completion_index(rs, len);
3543 if (nb_args == 2) {
3544 int i;
3545 for (i = 0; i < MIGRATION_CAPABILITY__MAX; i++) {
3546 const char *name = MigrationCapability_str(i);
3547 if (!strncmp(str, name, len)) {
3548 readline_add_completion(rs, name);
3549 }
3550 }
3551 } else if (nb_args == 3) {
3552 add_completion_option(rs, str, "on");
3553 add_completion_option(rs, str, "off");
3554 }
3555 }
3556
3557 void migrate_set_parameter_completion(ReadLineState *rs, int nb_args,
3558 const char *str)
3559 {
3560 size_t len;
3561
3562 len = strlen(str);
3563 readline_set_completion_index(rs, len);
3564 if (nb_args == 2) {
3565 int i;
3566 for (i = 0; i < MIGRATION_PARAMETER__MAX; i++) {
3567 const char *name = MigrationParameter_str(i);
3568 if (!strncmp(str, name, len)) {
3569 readline_add_completion(rs, name);
3570 }
3571 }
3572 }
3573 }
3574
3575 void host_net_add_completion(ReadLineState *rs, int nb_args, const char *str)
3576 {
3577 int i;
3578 size_t len;
3579 if (nb_args != 2) {
3580 return;
3581 }
3582 len = strlen(str);
3583 readline_set_completion_index(rs, len);
3584 for (i = 0; host_net_devices[i]; i++) {
3585 if (!strncmp(host_net_devices[i], str, len)) {
3586 readline_add_completion(rs, host_net_devices[i]);
3587 }
3588 }
3589 }
3590
3591 void host_net_remove_completion(ReadLineState *rs, int nb_args, const char *str)
3592 {
3593 NetClientState *ncs[MAX_QUEUE_NUM];
3594 int count, i, len;
3595
3596 len = strlen(str);
3597 readline_set_completion_index(rs, len);
3598 if (nb_args == 2) {
3599 count = qemu_find_net_clients_except(NULL, ncs,
3600 NET_CLIENT_DRIVER_NONE,
3601 MAX_QUEUE_NUM);
3602 for (i = 0; i < MIN(count, MAX_QUEUE_NUM); i++) {
3603 int id;
3604 char name[16];
3605
3606 if (net_hub_id_for_client(ncs[i], &id)) {
3607 continue;
3608 }
3609 snprintf(name, sizeof(name), "%d", id);
3610 if (!strncmp(str, name, len)) {
3611 readline_add_completion(rs, name);
3612 }
3613 }
3614 return;
3615 } else if (nb_args == 3) {
3616 count = qemu_find_net_clients_except(NULL, ncs,
3617 NET_CLIENT_DRIVER_NIC,
3618 MAX_QUEUE_NUM);
3619 for (i = 0; i < MIN(count, MAX_QUEUE_NUM); i++) {
3620 int id;
3621 const char *name;
3622
3623 if (ncs[i]->info->type == NET_CLIENT_DRIVER_HUBPORT ||
3624 net_hub_id_for_client(ncs[i], &id)) {
3625 continue;
3626 }
3627 name = ncs[i]->name;
3628 if (!strncmp(str, name, len)) {
3629 readline_add_completion(rs, name);
3630 }
3631 }
3632 return;
3633 }
3634 }
3635
3636 static void vm_completion(ReadLineState *rs, const char *str)
3637 {
3638 size_t len;
3639 BlockDriverState *bs;
3640 BdrvNextIterator it;
3641
3642 len = strlen(str);
3643 readline_set_completion_index(rs, len);
3644
3645 for (bs = bdrv_first(&it); bs; bs = bdrv_next(&it)) {
3646 SnapshotInfoList *snapshots, *snapshot;
3647 AioContext *ctx = bdrv_get_aio_context(bs);
3648 bool ok = false;
3649
3650 aio_context_acquire(ctx);
3651 if (bdrv_can_snapshot(bs)) {
3652 ok = bdrv_query_snapshot_info_list(bs, &snapshots, NULL) == 0;
3653 }
3654 aio_context_release(ctx);
3655 if (!ok) {
3656 continue;
3657 }
3658
3659 snapshot = snapshots;
3660 while (snapshot) {
3661 char *completion = snapshot->value->name;
3662 if (!strncmp(str, completion, len)) {
3663 readline_add_completion(rs, completion);
3664 }
3665 completion = snapshot->value->id;
3666 if (!strncmp(str, completion, len)) {
3667 readline_add_completion(rs, completion);
3668 }
3669 snapshot = snapshot->next;
3670 }
3671 qapi_free_SnapshotInfoList(snapshots);
3672 }
3673
3674 }
3675
3676 void delvm_completion(ReadLineState *rs, int nb_args, const char *str)
3677 {
3678 if (nb_args == 2) {
3679 vm_completion(rs, str);
3680 }
3681 }
3682
3683 void loadvm_completion(ReadLineState *rs, int nb_args, const char *str)
3684 {
3685 if (nb_args == 2) {
3686 vm_completion(rs, str);
3687 }
3688 }
3689
3690 static void monitor_find_completion_by_table(Monitor *mon,
3691 const mon_cmd_t *cmd_table,
3692 char **args,
3693 int nb_args)
3694 {
3695 const char *cmdname;
3696 int i;
3697 const char *ptype, *str, *name;
3698 const mon_cmd_t *cmd;
3699 BlockBackend *blk = NULL;
3700
3701 if (nb_args <= 1) {
3702 /* command completion */
3703 if (nb_args == 0)
3704 cmdname = "";
3705 else
3706 cmdname = args[0];
3707 readline_set_completion_index(mon->rs, strlen(cmdname));
3708 for (cmd = cmd_table; cmd->name != NULL; cmd++) {
3709 cmd_completion(mon, cmdname, cmd->name);
3710 }
3711 } else {
3712 /* find the command */
3713 for (cmd = cmd_table; cmd->name != NULL; cmd++) {
3714 if (compare_cmd(args[0], cmd->name)) {
3715 break;
3716 }
3717 }
3718 if (!cmd->name) {
3719 return;
3720 }
3721
3722 if (cmd->sub_table) {
3723 /* do the job again */
3724 monitor_find_completion_by_table(mon, cmd->sub_table,
3725 &args[1], nb_args - 1);
3726 return;
3727 }
3728 if (cmd->command_completion) {
3729 cmd->command_completion(mon->rs, nb_args, args[nb_args - 1]);
3730 return;
3731 }
3732
3733 ptype = next_arg_type(cmd->args_type);
3734 for(i = 0; i < nb_args - 2; i++) {
3735 if (*ptype != '\0') {
3736 ptype = next_arg_type(ptype);
3737 while (*ptype == '?')
3738 ptype = next_arg_type(ptype);
3739 }
3740 }
3741 str = args[nb_args - 1];
3742 while (*ptype == '-' && ptype[1] != '\0') {
3743 ptype = next_arg_type(ptype);
3744 }
3745 switch(*ptype) {
3746 case 'F':
3747 /* file completion */
3748 readline_set_completion_index(mon->rs, strlen(str));
3749 file_completion(mon, str);
3750 break;
3751 case 'B':
3752 /* block device name completion */
3753 readline_set_completion_index(mon->rs, strlen(str));
3754 while ((blk = blk_next(blk)) != NULL) {
3755 name = blk_name(blk);
3756 if (str[0] == '\0' ||
3757 !strncmp(name, str, strlen(str))) {
3758 readline_add_completion(mon->rs, name);
3759 }
3760 }
3761 break;
3762 case 's':
3763 case 'S':
3764 if (!strcmp(cmd->name, "help|?")) {
3765 monitor_find_completion_by_table(mon, cmd_table,
3766 &args[1], nb_args - 1);
3767 }
3768 break;
3769 default:
3770 break;
3771 }
3772 }
3773 }
3774
3775 static void monitor_find_completion(void *opaque,
3776 const char *cmdline)
3777 {
3778 Monitor *mon = opaque;
3779 char *args[MAX_ARGS];
3780 int nb_args, len;
3781
3782 /* 1. parse the cmdline */
3783 if (parse_cmdline(cmdline, &nb_args, args) < 0) {
3784 return;
3785 }
3786
3787 /* if the line ends with a space, it means we want to complete the
3788 next arg */
3789 len = strlen(cmdline);
3790 if (len > 0 && qemu_isspace(cmdline[len - 1])) {
3791 if (nb_args >= MAX_ARGS) {
3792 goto cleanup;
3793 }
3794 args[nb_args++] = g_strdup("");
3795 }
3796
3797 /* 2. auto complete according to args */
3798 monitor_find_completion_by_table(mon, mon->cmd_table, args, nb_args);
3799
3800 cleanup:
3801 free_cmdline_args(args, nb_args);
3802 }
3803
3804 static int monitor_can_read(void *opaque)
3805 {
3806 Monitor *mon = opaque;
3807
3808 return (mon->suspend_cnt == 0) ? 1 : 0;
3809 }
3810
3811 static void handle_qmp_command(JSONMessageParser *parser, GQueue *tokens)
3812 {
3813 QObject *req, *rsp = NULL, *id = NULL;
3814 QDict *qdict = NULL;
3815 Monitor *mon = cur_mon;
3816 Error *err = NULL;
3817
3818 req = json_parser_parse_err(tokens, NULL, &err);
3819 if (!req && !err) {
3820 /* json_parser_parse_err() sucks: can fail without setting @err */
3821 error_setg(&err, QERR_JSON_PARSING);
3822 }
3823 if (err) {
3824 goto err_out;
3825 }
3826
3827 qdict = qobject_to_qdict(req);
3828 if (qdict) {
3829 id = qdict_get(qdict, "id");
3830 qobject_incref(id);
3831 qdict_del(qdict, "id");
3832 } /* else will fail qmp_dispatch() */
3833
3834 if (trace_event_get_state_backends(TRACE_HANDLE_QMP_COMMAND)) {
3835 QString *req_json = qobject_to_json(req);
3836 trace_handle_qmp_command(mon, qstring_get_str(req_json));
3837 QDECREF(req_json);
3838 }
3839
3840 rsp = qmp_dispatch(cur_mon->qmp.commands, req);
3841
3842 if (mon->qmp.commands == &qmp_cap_negotiation_commands) {
3843 qdict = qdict_get_qdict(qobject_to_qdict(rsp), "error");
3844 if (qdict
3845 && !g_strcmp0(qdict_get_try_str(qdict, "class"),
3846 QapiErrorClass_str(ERROR_CLASS_COMMAND_NOT_FOUND))) {
3847 /* Provide a more useful error message */
3848 qdict_del(qdict, "desc");
3849 qdict_put_str(qdict, "desc", "Expecting capabilities negotiation"
3850 " with 'qmp_capabilities'");
3851 }
3852 }
3853
3854 err_out:
3855 if (err) {
3856 qdict = qdict_new();
3857 qdict_put_obj(qdict, "error", qmp_build_error_object(err));
3858 error_free(err);
3859 rsp = QOBJECT(qdict);
3860 }
3861
3862 if (rsp) {
3863 if (id) {
3864 qdict_put_obj(qobject_to_qdict(rsp), "id", id);
3865 id = NULL;
3866 }
3867
3868 monitor_json_emitter(mon, rsp);
3869 }
3870
3871 qobject_decref(id);
3872 qobject_decref(rsp);
3873 qobject_decref(req);
3874 }
3875
3876 static void monitor_qmp_read(void *opaque, const uint8_t *buf, int size)
3877 {
3878 Monitor *old_mon = cur_mon;
3879
3880 cur_mon = opaque;
3881
3882 json_message_parser_feed(&cur_mon->qmp.parser, (const char *) buf, size);
3883
3884 cur_mon = old_mon;
3885 }
3886
3887 static void monitor_read(void *opaque, const uint8_t *buf, int size)
3888 {
3889 Monitor *old_mon = cur_mon;
3890 int i;
3891
3892 cur_mon = opaque;
3893
3894 if (cur_mon->rs) {
3895 for (i = 0; i < size; i++)
3896 readline_handle_byte(cur_mon->rs, buf[i]);
3897 } else {
3898 if (size == 0 || buf[size - 1] != 0)
3899 monitor_printf(cur_mon, "corrupted command\n");
3900 else
3901 handle_hmp_command(cur_mon, (char *)buf);
3902 }
3903
3904 cur_mon = old_mon;
3905 }
3906
3907 static void monitor_command_cb(void *opaque, const char *cmdline,
3908 void *readline_opaque)
3909 {
3910 Monitor *mon = opaque;
3911
3912 monitor_suspend(mon);
3913 handle_hmp_command(mon, cmdline);
3914 monitor_resume(mon);
3915 }
3916
3917 int monitor_suspend(Monitor *mon)
3918 {
3919 if (!mon->rs)
3920 return -ENOTTY;
3921 mon->suspend_cnt++;
3922 return 0;
3923 }
3924
3925 void monitor_resume(Monitor *mon)
3926 {
3927 if (!mon->rs)
3928 return;
3929 if (--mon->suspend_cnt == 0)
3930 readline_show_prompt(mon->rs);
3931 }
3932
3933 static QObject *get_qmp_greeting(void)
3934 {
3935 QObject *ver = NULL;
3936
3937 qmp_marshal_query_version(NULL, &ver, NULL);
3938
3939 return qobject_from_jsonf("{'QMP': {'version': %p, 'capabilities': []}}",
3940 ver);
3941 }
3942
3943 static void monitor_qmp_event(void *opaque, int event)
3944 {
3945 QObject *data;
3946 Monitor *mon = opaque;
3947
3948 switch (event) {
3949 case CHR_EVENT_OPENED:
3950 mon->qmp.commands = &qmp_cap_negotiation_commands;
3951 data = get_qmp_greeting();
3952 monitor_json_emitter(mon, data);
3953 qobject_decref(data);
3954 mon_refcount++;
3955 break;
3956 case CHR_EVENT_CLOSED:
3957 json_message_parser_destroy(&mon->qmp.parser);
3958 json_message_parser_init(&mon->qmp.parser, handle_qmp_command);
3959 mon_refcount--;
3960 monitor_fdsets_cleanup();
3961 break;
3962 }
3963 }
3964
3965 static void monitor_event(void *opaque, int event)
3966 {
3967 Monitor *mon = opaque;
3968
3969 switch (event) {
3970 case CHR_EVENT_MUX_IN:
3971 qemu_mutex_lock(&mon->out_lock);
3972 mon->mux_out = 0;
3973 qemu_mutex_unlock(&mon->out_lock);
3974 if (mon->reset_seen) {
3975 readline_restart(mon->rs);
3976 monitor_resume(mon);
3977 monitor_flush(mon);
3978 } else {
3979 mon->suspend_cnt = 0;
3980 }
3981 break;
3982
3983 case CHR_EVENT_MUX_OUT:
3984 if (mon->reset_seen) {
3985 if (mon->suspend_cnt == 0) {
3986 monitor_printf(mon, "\n");
3987 }
3988 monitor_flush(mon);
3989 monitor_suspend(mon);
3990 } else {
3991 mon->suspend_cnt++;
3992 }
3993 qemu_mutex_lock(&mon->out_lock);
3994 mon->mux_out = 1;
3995 qemu_mutex_unlock(&mon->out_lock);
3996 break;
3997
3998 case CHR_EVENT_OPENED:
3999 monitor_printf(mon, "QEMU %s monitor - type 'help' for more "
4000 "information\n", QEMU_VERSION);
4001 if (!mon->mux_out) {
4002 readline_restart(mon->rs);
4003 readline_show_prompt(mon->rs);
4004 }
4005 mon->reset_seen = 1;
4006 mon_refcount++;
4007 break;
4008
4009 case CHR_EVENT_CLOSED:
4010 mon_refcount--;
4011 monitor_fdsets_cleanup();
4012 break;
4013 }
4014 }
4015
4016 static int
4017 compare_mon_cmd(const void *a, const void *b)
4018 {
4019 return strcmp(((const mon_cmd_t *)a)->name,
4020 ((const mon_cmd_t *)b)->name);
4021 }
4022
4023 static void sortcmdlist(void)
4024 {
4025 int array_num;
4026 int elem_size = sizeof(mon_cmd_t);
4027
4028 array_num = sizeof(mon_cmds)/elem_size-1;
4029 qsort((void *)mon_cmds, array_num, elem_size, compare_mon_cmd);
4030
4031 array_num = sizeof(info_cmds)/elem_size-1;
4032 qsort((void *)info_cmds, array_num, elem_size, compare_mon_cmd);
4033 }
4034
4035 /* These functions just adapt the readline interface in a typesafe way. We
4036 * could cast function pointers but that discards compiler checks.
4037 */
4038 static void GCC_FMT_ATTR(2, 3) monitor_readline_printf(void *opaque,
4039 const char *fmt, ...)
4040 {
4041 va_list ap;
4042 va_start(ap, fmt);
4043 monitor_vprintf(opaque, fmt, ap);
4044 va_end(ap);
4045 }
4046
4047 static void monitor_readline_flush(void *opaque)
4048 {
4049 monitor_flush(opaque);
4050 }
4051
4052 /*
4053 * Print to current monitor if we have one, else to stderr.
4054 * TODO should return int, so callers can calculate width, but that
4055 * requires surgery to monitor_vprintf(). Left for another day.
4056 */
4057 void error_vprintf(const char *fmt, va_list ap)
4058 {
4059 if (cur_mon && !monitor_cur_is_qmp()) {
4060 monitor_vprintf(cur_mon, fmt, ap);
4061 } else {
4062 vfprintf(stderr, fmt, ap);
4063 }
4064 }
4065
4066 void error_vprintf_unless_qmp(const char *fmt, va_list ap)
4067 {
4068 if (cur_mon && !monitor_cur_is_qmp()) {
4069 monitor_vprintf(cur_mon, fmt, ap);
4070 } else if (!cur_mon) {
4071 vfprintf(stderr, fmt, ap);
4072 }
4073 }
4074
4075 static void __attribute__((constructor)) monitor_lock_init(void)
4076 {
4077 qemu_mutex_init(&monitor_lock);
4078 }
4079
4080 void monitor_init(Chardev *chr, int flags)
4081 {
4082 static int is_first_init = 1;
4083 Monitor *mon;
4084
4085 if (is_first_init) {
4086 monitor_qapi_event_init();
4087 sortcmdlist();
4088 is_first_init = 0;
4089 }
4090
4091 mon = g_malloc(sizeof(*mon));
4092 monitor_data_init(mon);
4093
4094 qemu_chr_fe_init(&mon->chr, chr, &error_abort);
4095 mon->flags = flags;
4096 if (flags & MONITOR_USE_READLINE) {
4097 mon->rs = readline_init(monitor_readline_printf,
4098 monitor_readline_flush,
4099 mon,
4100 monitor_find_completion);
4101 monitor_read_command(mon, 0);
4102 }
4103
4104 if (monitor_is_qmp(mon)) {
4105 qemu_chr_fe_set_handlers(&mon->chr, monitor_can_read, monitor_qmp_read,
4106 monitor_qmp_event, NULL, mon, NULL, true);
4107 qemu_chr_fe_set_echo(&mon->chr, true);
4108 json_message_parser_init(&mon->qmp.parser, handle_qmp_command);
4109 } else {
4110 qemu_chr_fe_set_handlers(&mon->chr, monitor_can_read, monitor_read,
4111 monitor_event, NULL, mon, NULL, true);
4112 }
4113
4114 qemu_mutex_lock(&monitor_lock);
4115 QLIST_INSERT_HEAD(&mon_list, mon, entry);
4116 qemu_mutex_unlock(&monitor_lock);
4117 }
4118
4119 void monitor_cleanup(void)
4120 {
4121 Monitor *mon, *next;
4122
4123 qemu_mutex_lock(&monitor_lock);
4124 QLIST_FOREACH_SAFE(mon, &mon_list, entry, next) {
4125 QLIST_REMOVE(mon, entry);
4126 monitor_data_destroy(mon);
4127 g_free(mon);
4128 }
4129 qemu_mutex_unlock(&monitor_lock);
4130 }
4131
4132 QemuOptsList qemu_mon_opts = {
4133 .name = "mon",
4134 .implied_opt_name = "chardev",
4135 .head = QTAILQ_HEAD_INITIALIZER(qemu_mon_opts.head),
4136 .desc = {
4137 {
4138 .name = "mode",
4139 .type = QEMU_OPT_STRING,
4140 },{
4141 .name = "chardev",
4142 .type = QEMU_OPT_STRING,
4143 },{
4144 .name = "default", /* deprecated */
4145 .type = QEMU_OPT_BOOL,
4146 },{
4147 .name = "pretty",
4148 .type = QEMU_OPT_BOOL,
4149 },
4150 { /* end of list */ }
4151 },
4152 };
4153
4154 #ifndef TARGET_I386
4155 void qmp_rtc_reset_reinjection(Error **errp)
4156 {
4157 error_setg(errp, QERR_FEATURE_DISABLED, "rtc-reset-reinjection");
4158 }
4159 #endif
4160
4161 #ifndef TARGET_S390X
4162 void qmp_dump_skeys(const char *filename, Error **errp)
4163 {
4164 error_setg(errp, QERR_FEATURE_DISABLED, "dump-skeys");
4165 }
4166 #endif
4167
4168 #ifndef TARGET_ARM
4169 GICCapabilityList *qmp_query_gic_capabilities(Error **errp)
4170 {
4171 error_setg(errp, QERR_FEATURE_DISABLED, "query-gic-capabilities");
4172 return NULL;
4173 }
4174 #endif
4175
4176 HotpluggableCPUList *qmp_query_hotpluggable_cpus(Error **errp)
4177 {
4178 MachineState *ms = MACHINE(qdev_get_machine());
4179 MachineClass *mc = MACHINE_GET_CLASS(ms);
4180
4181 if (!mc->has_hotpluggable_cpus) {
4182 error_setg(errp, QERR_FEATURE_DISABLED, "query-hotpluggable-cpus");
4183 return NULL;
4184 }
4185
4186 return machine_query_hotpluggable_cpus(ms);
4187 }
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