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vhost: avoid to start/stop virtqueue which is not ready
[qemu/ar7.git] / monitor.c
blob373bb8d1c371f27e1f72acc70861cd123d0fac15
1 /*
2 * QEMU monitor
3 *
4 * Copyright (c) 2003-2004 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24
25 #include "qemu/osdep.h"
26 #include <dirent.h>
27 #include "cpu.h"
28 #include "hw/hw.h"
29 #include "monitor/qdev.h"
30 #include "hw/usb.h"
31 #include "hw/pci/pci.h"
32 #include "sysemu/watchdog.h"
33 #include "hw/loader.h"
34 #include "exec/gdbstub.h"
35 #include "net/net.h"
36 #include "net/slirp.h"
37 #include "chardev/char-fe.h"
38 #include "ui/qemu-spice.h"
39 #include "sysemu/numa.h"
40 #include "monitor/monitor.h"
41 #include "qemu/config-file.h"
42 #include "qemu/readline.h"
43 #include "ui/console.h"
44 #include "ui/input.h"
45 #include "sysemu/blockdev.h"
46 #include "sysemu/block-backend.h"
47 #include "audio/audio.h"
48 #include "disas/disas.h"
49 #include "sysemu/balloon.h"
50 #include "qemu/timer.h"
51 #include "sysemu/hw_accel.h"
52 #include "qemu/acl.h"
53 #include "sysemu/tpm.h"
54 #include "qapi/qmp/qdict.h"
55 #include "qapi/qmp/qerror.h"
56 #include "qapi/qmp/qnum.h"
57 #include "qapi/qmp/qstring.h"
58 #include "qapi/qmp/qjson.h"
59 #include "qapi/qmp/json-streamer.h"
60 #include "qapi/qmp/json-parser.h"
61 #include "qom/object_interfaces.h"
62 #include "trace-root.h"
63 #include "trace/control.h"
64 #include "monitor/hmp-target.h"
65 #ifdef CONFIG_TRACE_SIMPLE
66 #include "trace/simple.h"
67 #endif
68 #include "exec/memory.h"
69 #include "exec/exec-all.h"
70 #include "qemu/log.h"
71 #include "qemu/option.h"
72 #include "qmp-commands.h"
73 #include "hmp.h"
74 #include "qemu/thread.h"
75 #include "block/qapi.h"
76 #include "qapi/error.h"
77 #include "qapi/qmp-event.h"
78 #include "qapi-event.h"
79 #include "qmp-introspect.h"
80 #include "sysemu/qtest.h"
81 #include "sysemu/cpus.h"
82 #include "qemu/cutils.h"
83
84 #if defined(TARGET_S390X)
85 #include "hw/s390x/storage-keys.h"
86 #include "hw/s390x/storage-attributes.h"
87 #endif
88
89 /*
90 * Supported types:
91 *
92 * 'F' filename
93 * 'B' block device name
94 * 's' string (accept optional quote)
95 * 'S' it just appends the rest of the string (accept optional quote)
96 * 'O' option string of the form NAME=VALUE,...
97 * parsed according to QemuOptsList given by its name
98 * Example: 'device:O' uses qemu_device_opts.
99 * Restriction: only lists with empty desc are supported
100 * TODO lift the restriction
101 * 'i' 32 bit integer
102 * 'l' target long (32 or 64 bit)
103 * 'M' Non-negative target long (32 or 64 bit), in user mode the
104 * value is multiplied by 2^20 (think Mebibyte)
105 * 'o' octets (aka bytes)
106 * user mode accepts an optional E, e, P, p, T, t, G, g, M, m,
107 * K, k suffix, which multiplies the value by 2^60 for suffixes E
108 * and e, 2^50 for suffixes P and p, 2^40 for suffixes T and t,
109 * 2^30 for suffixes G and g, 2^20 for M and m, 2^10 for K and k
110 * 'T' double
111 * user mode accepts an optional ms, us, ns suffix,
112 * which divides the value by 1e3, 1e6, 1e9, respectively
113 * '/' optional gdb-like print format (like "/10x")
114 *
115 * '?' optional type (for all types, except '/')
116 * '.' other form of optional type (for 'i' and 'l')
117 * 'b' boolean
118 * user mode accepts "on" or "off"
119 * '-' optional parameter (eg. '-f')
120 *
121 */
122
123 typedef struct mon_cmd_t {
124 const char *name;
125 const char *args_type;
126 const char *params;
127 const char *help;
128 void (*cmd)(Monitor *mon, const QDict *qdict);
129 /* @sub_table is a list of 2nd level of commands. If it does not exist,
130 * cmd should be used. If it exists, sub_table[?].cmd should be
131 * used, and cmd of 1st level plays the role of help function.
132 */
133 struct mon_cmd_t *sub_table;
134 void (*command_completion)(ReadLineState *rs, int nb_args, const char *str);
135 } mon_cmd_t;
136
137 /* file descriptors passed via SCM_RIGHTS */
138 typedef struct mon_fd_t mon_fd_t;
139 struct mon_fd_t {
140 char *name;
141 int fd;
142 QLIST_ENTRY(mon_fd_t) next;
143 };
144
145 /* file descriptor associated with a file descriptor set */
146 typedef struct MonFdsetFd MonFdsetFd;
147 struct MonFdsetFd {
148 int fd;
149 bool removed;
150 char *opaque;
151 QLIST_ENTRY(MonFdsetFd) next;
152 };
153
154 /* file descriptor set containing fds passed via SCM_RIGHTS */
155 typedef struct MonFdset MonFdset;
156 struct MonFdset {
157 int64_t id;
158 QLIST_HEAD(, MonFdsetFd) fds;
159 QLIST_HEAD(, MonFdsetFd) dup_fds;
160 QLIST_ENTRY(MonFdset) next;
161 };
162
163 typedef struct {
164 JSONMessageParser parser;
165 /*
166 * When a client connects, we're in capabilities negotiation mode.
167 * When command qmp_capabilities succeeds, we go into command
168 * mode.
169 */
170 QmpCommandList *commands;
171 } MonitorQMP;
172
173 /*
174 * To prevent flooding clients, events can be throttled. The
175 * throttling is calculated globally, rather than per-Monitor
176 * instance.
177 */
178 typedef struct MonitorQAPIEventState {
179 QAPIEvent event; /* Throttling state for this event type and... */
180 QDict *data; /* ... data, see qapi_event_throttle_equal() */
181 QEMUTimer *timer; /* Timer for handling delayed events */
182 QDict *qdict; /* Delayed event (if any) */
183 } MonitorQAPIEventState;
184
185 typedef struct {
186 int64_t rate; /* Minimum time (in ns) between two events */
187 } MonitorQAPIEventConf;
188
189 struct Monitor {
190 CharBackend chr;
191 int reset_seen;
192 int flags;
193 int suspend_cnt;
194 bool skip_flush;
195
196 QemuMutex out_lock;
197 QString *outbuf;
198 guint out_watch;
199
200 /* Read under either BQL or out_lock, written with BQL+out_lock. */
201 int mux_out;
202
203 ReadLineState *rs;
204 MonitorQMP qmp;
205 gchar *mon_cpu_path;
206 BlockCompletionFunc *password_completion_cb;
207 void *password_opaque;
208 mon_cmd_t *cmd_table;
209 QLIST_HEAD(,mon_fd_t) fds;
210 QLIST_ENTRY(Monitor) entry;
211 };
212
213 /* QMP checker flags */
214 #define QMP_ACCEPT_UNKNOWNS 1
215
216 /* Protects mon_list, monitor_event_state. */
217 static QemuMutex monitor_lock;
218
219 static QLIST_HEAD(mon_list, Monitor) mon_list;
220 static QLIST_HEAD(mon_fdsets, MonFdset) mon_fdsets;
221 static int mon_refcount;
222
223 static mon_cmd_t mon_cmds[];
224 static mon_cmd_t info_cmds[];
225
226 QmpCommandList qmp_commands, qmp_cap_negotiation_commands;
227
228 Monitor *cur_mon;
229
230 static QEMUClockType event_clock_type = QEMU_CLOCK_REALTIME;
231
232 static void monitor_command_cb(void *opaque, const char *cmdline,
233 void *readline_opaque);
234
235 /**
236 * Is @mon a QMP monitor?
237 */
238 static inline bool monitor_is_qmp(const Monitor *mon)
239 {
240 return (mon->flags & MONITOR_USE_CONTROL);
241 }
242
243 /**
244 * Is the current monitor, if any, a QMP monitor?
245 */
246 bool monitor_cur_is_qmp(void)
247 {
248 return cur_mon && monitor_is_qmp(cur_mon);
249 }
250
251 void monitor_read_command(Monitor *mon, int show_prompt)
252 {
253 if (!mon->rs)
254 return;
255
256 readline_start(mon->rs, "(qemu) ", 0, monitor_command_cb, NULL);
257 if (show_prompt)
258 readline_show_prompt(mon->rs);
259 }
260
261 int monitor_read_password(Monitor *mon, ReadLineFunc *readline_func,
262 void *opaque)
263 {
264 if (mon->rs) {
265 readline_start(mon->rs, "Password: ", 1, readline_func, opaque);
266 /* prompt is printed on return from the command handler */
267 return 0;
268 } else {
269 monitor_printf(mon, "terminal does not support password prompting\n");
270 return -ENOTTY;
271 }
272 }
273
274 static void monitor_flush_locked(Monitor *mon);
275
276 static gboolean monitor_unblocked(GIOChannel *chan, GIOCondition cond,
277 void *opaque)
278 {
279 Monitor *mon = opaque;
280
281 qemu_mutex_lock(&mon->out_lock);
282 mon->out_watch = 0;
283 monitor_flush_locked(mon);
284 qemu_mutex_unlock(&mon->out_lock);
285 return FALSE;
286 }
287
288 /* Called with mon->out_lock held. */
289 static void monitor_flush_locked(Monitor *mon)
290 {
291 int rc;
292 size_t len;
293 const char *buf;
294
295 if (mon->skip_flush) {
296 return;
297 }
298
299 buf = qstring_get_str(mon->outbuf);
300 len = qstring_get_length(mon->outbuf);
301
302 if (len && !mon->mux_out) {
303 rc = qemu_chr_fe_write(&mon->chr, (const uint8_t *) buf, len);
304 if ((rc < 0 && errno != EAGAIN) || (rc == len)) {
305 /* all flushed or error */
306 QDECREF(mon->outbuf);
307 mon->outbuf = qstring_new();
308 return;
309 }
310 if (rc > 0) {
311 /* partial write */
312 QString *tmp = qstring_from_str(buf + rc);
313 QDECREF(mon->outbuf);
314 mon->outbuf = tmp;
315 }
316 if (mon->out_watch == 0) {
317 mon->out_watch =
318 qemu_chr_fe_add_watch(&mon->chr, G_IO_OUT | G_IO_HUP,
319 monitor_unblocked, mon);
320 }
321 }
322 }
323
324 void monitor_flush(Monitor *mon)
325 {
326 qemu_mutex_lock(&mon->out_lock);
327 monitor_flush_locked(mon);
328 qemu_mutex_unlock(&mon->out_lock);
329 }
330
331 /* flush at every end of line */
332 static void monitor_puts(Monitor *mon, const char *str)
333 {
334 char c;
335
336 qemu_mutex_lock(&mon->out_lock);
337 for(;;) {
338 c = *str++;
339 if (c == '\0')
340 break;
341 if (c == '\n') {
342 qstring_append_chr(mon->outbuf, '\r');
343 }
344 qstring_append_chr(mon->outbuf, c);
345 if (c == '\n') {
346 monitor_flush_locked(mon);
347 }
348 }
349 qemu_mutex_unlock(&mon->out_lock);
350 }
351
352 void monitor_vprintf(Monitor *mon, const char *fmt, va_list ap)
353 {
354 char *buf;
355
356 if (!mon)
357 return;
358
359 if (monitor_is_qmp(mon)) {
360 return;
361 }
362
363 buf = g_strdup_vprintf(fmt, ap);
364 monitor_puts(mon, buf);
365 g_free(buf);
366 }
367
368 void monitor_printf(Monitor *mon, const char *fmt, ...)
369 {
370 va_list ap;
371 va_start(ap, fmt);
372 monitor_vprintf(mon, fmt, ap);
373 va_end(ap);
374 }
375
376 int monitor_fprintf(FILE *stream, const char *fmt, ...)
377 {
378 va_list ap;
379 va_start(ap, fmt);
380 monitor_vprintf((Monitor *)stream, fmt, ap);
381 va_end(ap);
382 return 0;
383 }
384
385 static void monitor_json_emitter(Monitor *mon, const QObject *data)
386 {
387 QString *json;
388
389 json = mon->flags & MONITOR_USE_PRETTY ? qobject_to_json_pretty(data) :
390 qobject_to_json(data);
391 assert(json != NULL);
392
393 qstring_append_chr(json, '\n');
394 monitor_puts(mon, qstring_get_str(json));
395
396 QDECREF(json);
397 }
398
399 static MonitorQAPIEventConf monitor_qapi_event_conf[QAPI_EVENT__MAX] = {
400 /* Limit guest-triggerable events to 1 per second */
401 [QAPI_EVENT_RTC_CHANGE] = { 1000 * SCALE_MS },
402 [QAPI_EVENT_WATCHDOG] = { 1000 * SCALE_MS },
403 [QAPI_EVENT_BALLOON_CHANGE] = { 1000 * SCALE_MS },
404 [QAPI_EVENT_QUORUM_REPORT_BAD] = { 1000 * SCALE_MS },
405 [QAPI_EVENT_QUORUM_FAILURE] = { 1000 * SCALE_MS },
406 [QAPI_EVENT_VSERPORT_CHANGE] = { 1000 * SCALE_MS },
407 };
408
409 GHashTable *monitor_qapi_event_state;
410
411 /*
412 * Emits the event to every monitor instance, @event is only used for trace
413 * Called with monitor_lock held.
414 */
415 static void monitor_qapi_event_emit(QAPIEvent event, QDict *qdict)
416 {
417 Monitor *mon;
418
419 trace_monitor_protocol_event_emit(event, qdict);
420 QLIST_FOREACH(mon, &mon_list, entry) {
421 if (monitor_is_qmp(mon)
422 && mon->qmp.commands != &qmp_cap_negotiation_commands) {
423 monitor_json_emitter(mon, QOBJECT(qdict));
424 }
425 }
426 }
427
428 static void monitor_qapi_event_handler(void *opaque);
429
430 /*
431 * Queue a new event for emission to Monitor instances,
432 * applying any rate limiting if required.
433 */
434 static void
435 monitor_qapi_event_queue(QAPIEvent event, QDict *qdict, Error **errp)
436 {
437 MonitorQAPIEventConf *evconf;
438 MonitorQAPIEventState *evstate;
439
440 assert(event < QAPI_EVENT__MAX);
441 evconf = &monitor_qapi_event_conf[event];
442 trace_monitor_protocol_event_queue(event, qdict, evconf->rate);
443
444 qemu_mutex_lock(&monitor_lock);
445
446 if (!evconf->rate) {
447 /* Unthrottled event */
448 monitor_qapi_event_emit(event, qdict);
449 } else {
450 QDict *data = qobject_to_qdict(qdict_get(qdict, "data"));
451 MonitorQAPIEventState key = { .event = event, .data = data };
452
453 evstate = g_hash_table_lookup(monitor_qapi_event_state, &key);
454 assert(!evstate || timer_pending(evstate->timer));
455
456 if (evstate) {
457 /*
458 * Timer is pending for (at least) evconf->rate ns after
459 * last send. Store event for sending when timer fires,
460 * replacing a prior stored event if any.
461 */
462 QDECREF(evstate->qdict);
463 evstate->qdict = qdict;
464 QINCREF(evstate->qdict);
465 } else {
466 /*
467 * Last send was (at least) evconf->rate ns ago.
468 * Send immediately, and arm the timer to call
469 * monitor_qapi_event_handler() in evconf->rate ns. Any
470 * events arriving before then will be delayed until then.
471 */
472 int64_t now = qemu_clock_get_ns(event_clock_type);
473
474 monitor_qapi_event_emit(event, qdict);
475
476 evstate = g_new(MonitorQAPIEventState, 1);
477 evstate->event = event;
478 evstate->data = data;
479 QINCREF(evstate->data);
480 evstate->qdict = NULL;
481 evstate->timer = timer_new_ns(event_clock_type,
482 monitor_qapi_event_handler,
483 evstate);
484 g_hash_table_add(monitor_qapi_event_state, evstate);
485 timer_mod_ns(evstate->timer, now + evconf->rate);
486 }
487 }
488
489 qemu_mutex_unlock(&monitor_lock);
490 }
491
492 /*
493 * This function runs evconf->rate ns after sending a throttled
494 * event.
495 * If another event has since been stored, send it.
496 */
497 static void monitor_qapi_event_handler(void *opaque)
498 {
499 MonitorQAPIEventState *evstate = opaque;
500 MonitorQAPIEventConf *evconf = &monitor_qapi_event_conf[evstate->event];
501
502 trace_monitor_protocol_event_handler(evstate->event, evstate->qdict);
503 qemu_mutex_lock(&monitor_lock);
504
505 if (evstate->qdict) {
506 int64_t now = qemu_clock_get_ns(event_clock_type);
507
508 monitor_qapi_event_emit(evstate->event, evstate->qdict);
509 QDECREF(evstate->qdict);
510 evstate->qdict = NULL;
511 timer_mod_ns(evstate->timer, now + evconf->rate);
512 } else {
513 g_hash_table_remove(monitor_qapi_event_state, evstate);
514 QDECREF(evstate->data);
515 timer_free(evstate->timer);
516 g_free(evstate);
517 }
518
519 qemu_mutex_unlock(&monitor_lock);
520 }
521
522 static unsigned int qapi_event_throttle_hash(const void *key)
523 {
524 const MonitorQAPIEventState *evstate = key;
525 unsigned int hash = evstate->event * 255;
526
527 if (evstate->event == QAPI_EVENT_VSERPORT_CHANGE) {
528 hash += g_str_hash(qdict_get_str(evstate->data, "id"));
529 }
530
531 if (evstate->event == QAPI_EVENT_QUORUM_REPORT_BAD) {
532 hash += g_str_hash(qdict_get_str(evstate->data, "node-name"));
533 }
534
535 return hash;
536 }
537
538 static gboolean qapi_event_throttle_equal(const void *a, const void *b)
539 {
540 const MonitorQAPIEventState *eva = a;
541 const MonitorQAPIEventState *evb = b;
542
543 if (eva->event != evb->event) {
544 return FALSE;
545 }
546
547 if (eva->event == QAPI_EVENT_VSERPORT_CHANGE) {
548 return !strcmp(qdict_get_str(eva->data, "id"),
549 qdict_get_str(evb->data, "id"));
550 }
551
552 if (eva->event == QAPI_EVENT_QUORUM_REPORT_BAD) {
553 return !strcmp(qdict_get_str(eva->data, "node-name"),
554 qdict_get_str(evb->data, "node-name"));
555 }
556
557 return TRUE;
558 }
559
560 static void monitor_qapi_event_init(void)
561 {
562 if (qtest_enabled()) {
563 event_clock_type = QEMU_CLOCK_VIRTUAL;
564 }
565
566 monitor_qapi_event_state = g_hash_table_new(qapi_event_throttle_hash,
567 qapi_event_throttle_equal);
568 qmp_event_set_func_emit(monitor_qapi_event_queue);
569 }
570
571 static void handle_hmp_command(Monitor *mon, const char *cmdline);
572
573 static void monitor_data_init(Monitor *mon)
574 {
575 memset(mon, 0, sizeof(Monitor));
576 qemu_mutex_init(&mon->out_lock);
577 mon->outbuf = qstring_new();
578 /* Use *mon_cmds by default. */
579 mon->cmd_table = mon_cmds;
580 }
581
582 static void monitor_data_destroy(Monitor *mon)
583 {
584 g_free(mon->mon_cpu_path);
585 qemu_chr_fe_deinit(&mon->chr, false);
586 if (monitor_is_qmp(mon)) {
587 json_message_parser_destroy(&mon->qmp.parser);
588 }
589 readline_free(mon->rs);
590 QDECREF(mon->outbuf);
591 qemu_mutex_destroy(&mon->out_lock);
592 }
593
594 char *qmp_human_monitor_command(const char *command_line, bool has_cpu_index,
595 int64_t cpu_index, Error **errp)
596 {
597 char *output = NULL;
598 Monitor *old_mon, hmp;
599
600 monitor_data_init(&hmp);
601 hmp.skip_flush = true;
602
603 old_mon = cur_mon;
604 cur_mon = &hmp;
605
606 if (has_cpu_index) {
607 int ret = monitor_set_cpu(cpu_index);
608 if (ret < 0) {
609 cur_mon = old_mon;
610 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "cpu-index",
611 "a CPU number");
612 goto out;
613 }
614 }
615
616 handle_hmp_command(&hmp, command_line);
617 cur_mon = old_mon;
618
619 qemu_mutex_lock(&hmp.out_lock);
620 if (qstring_get_length(hmp.outbuf) > 0) {
621 output = g_strdup(qstring_get_str(hmp.outbuf));
622 } else {
623 output = g_strdup("");
624 }
625 qemu_mutex_unlock(&hmp.out_lock);
626
627 out:
628 monitor_data_destroy(&hmp);
629 return output;
630 }
631
632 static int compare_cmd(const char *name, const char *list)
633 {
634 const char *p, *pstart;
635 int len;
636 len = strlen(name);
637 p = list;
638 for(;;) {
639 pstart = p;
640 p = strchr(p, '|');
641 if (!p)
642 p = pstart + strlen(pstart);
643 if ((p - pstart) == len && !memcmp(pstart, name, len))
644 return 1;
645 if (*p == '\0')
646 break;
647 p++;
648 }
649 return 0;
650 }
651
652 static int get_str(char *buf, int buf_size, const char **pp)
653 {
654 const char *p;
655 char *q;
656 int c;
657
658 q = buf;
659 p = *pp;
660 while (qemu_isspace(*p)) {
661 p++;
662 }
663 if (*p == '\0') {
664 fail:
665 *q = '\0';
666 *pp = p;
667 return -1;
668 }
669 if (*p == '\"') {
670 p++;
671 while (*p != '\0' && *p != '\"') {
672 if (*p == '\\') {
673 p++;
674 c = *p++;
675 switch (c) {
676 case 'n':
677 c = '\n';
678 break;
679 case 'r':
680 c = '\r';
681 break;
682 case '\\':
683 case '\'':
684 case '\"':
685 break;
686 default:
687 printf("unsupported escape code: '\\%c'\n", c);
688 goto fail;
689 }
690 if ((q - buf) < buf_size - 1) {
691 *q++ = c;
692 }
693 } else {
694 if ((q - buf) < buf_size - 1) {
695 *q++ = *p;
696 }
697 p++;
698 }
699 }
700 if (*p != '\"') {
701 printf("unterminated string\n");
702 goto fail;
703 }
704 p++;
705 } else {
706 while (*p != '\0' && !qemu_isspace(*p)) {
707 if ((q - buf) < buf_size - 1) {
708 *q++ = *p;
709 }
710 p++;
711 }
712 }
713 *q = '\0';
714 *pp = p;
715 return 0;
716 }
717
718 #define MAX_ARGS 16
719
720 static void free_cmdline_args(char **args, int nb_args)
721 {
722 int i;
723
724 assert(nb_args <= MAX_ARGS);
725
726 for (i = 0; i < nb_args; i++) {
727 g_free(args[i]);
728 }
729
730 }
731
732 /*
733 * Parse the command line to get valid args.
734 * @cmdline: command line to be parsed.
735 * @pnb_args: location to store the number of args, must NOT be NULL.
736 * @args: location to store the args, which should be freed by caller, must
737 * NOT be NULL.
738 *
739 * Returns 0 on success, negative on failure.
740 *
741 * NOTE: this parser is an approximate form of the real command parser. Number
742 * of args have a limit of MAX_ARGS. If cmdline contains more, it will
743 * return with failure.
744 */
745 static int parse_cmdline(const char *cmdline,
746 int *pnb_args, char **args)
747 {
748 const char *p;
749 int nb_args, ret;
750 char buf[1024];
751
752 p = cmdline;
753 nb_args = 0;
754 for (;;) {
755 while (qemu_isspace(*p)) {
756 p++;
757 }
758 if (*p == '\0') {
759 break;
760 }
761 if (nb_args >= MAX_ARGS) {
762 goto fail;
763 }
764 ret = get_str(buf, sizeof(buf), &p);
765 if (ret < 0) {
766 goto fail;
767 }
768 args[nb_args] = g_strdup(buf);
769 nb_args++;
770 }
771 *pnb_args = nb_args;
772 return 0;
773
774 fail:
775 free_cmdline_args(args, nb_args);
776 return -1;
777 }
778
779 static void help_cmd_dump_one(Monitor *mon,
780 const mon_cmd_t *cmd,
781 char **prefix_args,
782 int prefix_args_nb)
783 {
784 int i;
785
786 for (i = 0; i < prefix_args_nb; i++) {
787 monitor_printf(mon, "%s ", prefix_args[i]);
788 }
789 monitor_printf(mon, "%s %s -- %s\n", cmd->name, cmd->params, cmd->help);
790 }
791
792 /* @args[@arg_index] is the valid command need to find in @cmds */
793 static void help_cmd_dump(Monitor *mon, const mon_cmd_t *cmds,
794 char **args, int nb_args, int arg_index)
795 {
796 const mon_cmd_t *cmd;
797
798 /* No valid arg need to compare with, dump all in *cmds */
799 if (arg_index >= nb_args) {
800 for (cmd = cmds; cmd->name != NULL; cmd++) {
801 help_cmd_dump_one(mon, cmd, args, arg_index);
802 }
803 return;
804 }
805
806 /* Find one entry to dump */
807 for (cmd = cmds; cmd->name != NULL; cmd++) {
808 if (compare_cmd(args[arg_index], cmd->name)) {
809 if (cmd->sub_table) {
810 /* continue with next arg */
811 help_cmd_dump(mon, cmd->sub_table,
812 args, nb_args, arg_index + 1);
813 } else {
814 help_cmd_dump_one(mon, cmd, args, arg_index);
815 }
816 break;
817 }
818 }
819 }
820
821 static void help_cmd(Monitor *mon, const char *name)
822 {
823 char *args[MAX_ARGS];
824 int nb_args = 0;
825
826 /* 1. parse user input */
827 if (name) {
828 /* special case for log, directly dump and return */
829 if (!strcmp(name, "log")) {
830 const QEMULogItem *item;
831 monitor_printf(mon, "Log items (comma separated):\n");
832 monitor_printf(mon, "%-10s %s\n", "none", "remove all logs");
833 for (item = qemu_log_items; item->mask != 0; item++) {
834 monitor_printf(mon, "%-10s %s\n", item->name, item->help);
835 }
836 return;
837 }
838
839 if (parse_cmdline(name, &nb_args, args) < 0) {
840 return;
841 }
842 }
843
844 /* 2. dump the contents according to parsed args */
845 help_cmd_dump(mon, mon->cmd_table, args, nb_args, 0);
846
847 free_cmdline_args(args, nb_args);
848 }
849
850 static void do_help_cmd(Monitor *mon, const QDict *qdict)
851 {
852 help_cmd(mon, qdict_get_try_str(qdict, "name"));
853 }
854
855 static void hmp_trace_event(Monitor *mon, const QDict *qdict)
856 {
857 const char *tp_name = qdict_get_str(qdict, "name");
858 bool new_state = qdict_get_bool(qdict, "option");
859 bool has_vcpu = qdict_haskey(qdict, "vcpu");
860 int vcpu = qdict_get_try_int(qdict, "vcpu", 0);
861 Error *local_err = NULL;
862
863 if (vcpu < 0) {
864 monitor_printf(mon, "argument vcpu must be positive");
865 return;
866 }
867
868 qmp_trace_event_set_state(tp_name, new_state, true, true, has_vcpu, vcpu, &local_err);
869 if (local_err) {
870 error_report_err(local_err);
871 }
872 }
873
874 #ifdef CONFIG_TRACE_SIMPLE
875 static void hmp_trace_file(Monitor *mon, const QDict *qdict)
876 {
877 const char *op = qdict_get_try_str(qdict, "op");
878 const char *arg = qdict_get_try_str(qdict, "arg");
879
880 if (!op) {
881 st_print_trace_file_status((FILE *)mon, &monitor_fprintf);
882 } else if (!strcmp(op, "on")) {
883 st_set_trace_file_enabled(true);
884 } else if (!strcmp(op, "off")) {
885 st_set_trace_file_enabled(false);
886 } else if (!strcmp(op, "flush")) {
887 st_flush_trace_buffer();
888 } else if (!strcmp(op, "set")) {
889 if (arg) {
890 st_set_trace_file(arg);
891 }
892 } else {
893 monitor_printf(mon, "unexpected argument \"%s\"\n", op);
894 help_cmd(mon, "trace-file");
895 }
896 }
897 #endif
898
899 static void hmp_info_help(Monitor *mon, const QDict *qdict)
900 {
901 help_cmd(mon, "info");
902 }
903
904 static void query_commands_cb(QmpCommand *cmd, void *opaque)
905 {
906 CommandInfoList *info, **list = opaque;
907
908 if (!cmd->enabled) {
909 return;
910 }
911
912 info = g_malloc0(sizeof(*info));
913 info->value = g_malloc0(sizeof(*info->value));
914 info->value->name = g_strdup(cmd->name);
915 info->next = *list;
916 *list = info;
917 }
918
919 CommandInfoList *qmp_query_commands(Error **errp)
920 {
921 CommandInfoList *list = NULL;
922
923 qmp_for_each_command(cur_mon->qmp.commands, query_commands_cb, &list);
924
925 return list;
926 }
927
928 EventInfoList *qmp_query_events(Error **errp)
929 {
930 EventInfoList *info, *ev_list = NULL;
931 QAPIEvent e;
932
933 for (e = 0 ; e < QAPI_EVENT__MAX ; e++) {
934 const char *event_name = QAPIEvent_str(e);
935 assert(event_name != NULL);
936 info = g_malloc0(sizeof(*info));
937 info->value = g_malloc0(sizeof(*info->value));
938 info->value->name = g_strdup(event_name);
939
940 info->next = ev_list;
941 ev_list = info;
942 }
943
944 return ev_list;
945 }
946
947 /*
948 * Minor hack: generated marshalling suppressed for this command
949 * ('gen': false in the schema) so we can parse the JSON string
950 * directly into QObject instead of first parsing it with
951 * visit_type_SchemaInfoList() into a SchemaInfoList, then marshal it
952 * to QObject with generated output marshallers, every time. Instead,
953 * we do it in test-qobject-input-visitor.c, just to make sure
954 * qapi-introspect.py's output actually conforms to the schema.
955 */
956 static void qmp_query_qmp_schema(QDict *qdict, QObject **ret_data,
957 Error **errp)
958 {
959 *ret_data = qobject_from_json(qmp_schema_json, &error_abort);
960 }
961
962 /*
963 * We used to define commands in qmp-commands.hx in addition to the
964 * QAPI schema. This permitted defining some of them only in certain
965 * configurations. query-commands has always reflected that (good,
966 * because it lets QMP clients figure out what's actually available),
967 * while query-qmp-schema never did (not so good). This function is a
968 * hack to keep the configuration-specific commands defined exactly as
969 * before, even though qmp-commands.hx is gone.
970 *
971 * FIXME Educate the QAPI schema on configuration-specific commands,
972 * and drop this hack.
973 */
974 static void qmp_unregister_commands_hack(void)
975 {
976 #ifndef CONFIG_SPICE
977 qmp_unregister_command(&qmp_commands, "query-spice");
978 #endif
979 #ifndef CONFIG_REPLICATION
980 qmp_unregister_command(&qmp_commands, "xen-set-replication");
981 qmp_unregister_command(&qmp_commands, "query-xen-replication-status");
982 qmp_unregister_command(&qmp_commands, "xen-colo-do-checkpoint");
983 #endif
984 #ifndef TARGET_I386
985 qmp_unregister_command(&qmp_commands, "rtc-reset-reinjection");
986 #endif
987 #ifndef TARGET_S390X
988 qmp_unregister_command(&qmp_commands, "dump-skeys");
989 #endif
990 #ifndef TARGET_ARM
991 qmp_unregister_command(&qmp_commands, "query-gic-capabilities");
992 #endif
993 #if !defined(TARGET_S390X) && !defined(TARGET_I386)
994 qmp_unregister_command(&qmp_commands, "query-cpu-model-expansion");
995 #endif
996 #if !defined(TARGET_S390X)
997 qmp_unregister_command(&qmp_commands, "query-cpu-model-baseline");
998 qmp_unregister_command(&qmp_commands, "query-cpu-model-comparison");
999 #endif
1000 #if !defined(TARGET_PPC) && !defined(TARGET_ARM) && !defined(TARGET_I386) \
1001 && !defined(TARGET_S390X)
1002 qmp_unregister_command(&qmp_commands, "query-cpu-definitions");
1003 #endif
1004 }
1005
1006 void monitor_init_qmp_commands(void)
1007 {
1008 /*
1009 * Two command lists:
1010 * - qmp_commands contains all QMP commands
1011 * - qmp_cap_negotiation_commands contains just
1012 * "qmp_capabilities", to enforce capability negotiation
1013 */
1014
1015 qmp_init_marshal(&qmp_commands);
1016
1017 qmp_register_command(&qmp_commands, "query-qmp-schema",
1018 qmp_query_qmp_schema,
1019 QCO_NO_OPTIONS);
1020 qmp_register_command(&qmp_commands, "device_add", qmp_device_add,
1021 QCO_NO_OPTIONS);
1022 qmp_register_command(&qmp_commands, "netdev_add", qmp_netdev_add,
1023 QCO_NO_OPTIONS);
1024
1025 qmp_unregister_commands_hack();
1026
1027 QTAILQ_INIT(&qmp_cap_negotiation_commands);
1028 qmp_register_command(&qmp_cap_negotiation_commands, "qmp_capabilities",
1029 qmp_marshal_qmp_capabilities, QCO_NO_OPTIONS);
1030 }
1031
1032 void qmp_qmp_capabilities(Error **errp)
1033 {
1034 if (cur_mon->qmp.commands == &qmp_commands) {
1035 error_set(errp, ERROR_CLASS_COMMAND_NOT_FOUND,
1036 "Capabilities negotiation is already complete, command "
1037 "ignored");
1038 return;
1039 }
1040
1041 cur_mon->qmp.commands = &qmp_commands;
1042 }
1043
1044 /* set the current CPU defined by the user */
1045 int monitor_set_cpu(int cpu_index)
1046 {
1047 CPUState *cpu;
1048
1049 cpu = qemu_get_cpu(cpu_index);
1050 if (cpu == NULL) {
1051 return -1;
1052 }
1053 g_free(cur_mon->mon_cpu_path);
1054 cur_mon->mon_cpu_path = object_get_canonical_path(OBJECT(cpu));
1055 return 0;
1056 }
1057
1058 CPUState *mon_get_cpu(void)
1059 {
1060 CPUState *cpu;
1061
1062 if (cur_mon->mon_cpu_path) {
1063 cpu = (CPUState *) object_resolve_path_type(cur_mon->mon_cpu_path,
1064 TYPE_CPU, NULL);
1065 if (!cpu) {
1066 g_free(cur_mon->mon_cpu_path);
1067 cur_mon->mon_cpu_path = NULL;
1068 }
1069 }
1070 if (!cur_mon->mon_cpu_path) {
1071 if (!first_cpu) {
1072 return NULL;
1073 }
1074 monitor_set_cpu(first_cpu->cpu_index);
1075 cpu = first_cpu;
1076 }
1077 cpu_synchronize_state(cpu);
1078 return cpu;
1079 }
1080
1081 CPUArchState *mon_get_cpu_env(void)
1082 {
1083 CPUState *cs = mon_get_cpu();
1084
1085 return cs ? cs->env_ptr : NULL;
1086 }
1087
1088 int monitor_get_cpu_index(void)
1089 {
1090 CPUState *cs = mon_get_cpu();
1091
1092 return cs ? cs->cpu_index : UNASSIGNED_CPU_INDEX;
1093 }
1094
1095 static void hmp_info_registers(Monitor *mon, const QDict *qdict)
1096 {
1097 bool all_cpus = qdict_get_try_bool(qdict, "cpustate_all", false);
1098 CPUState *cs;
1099
1100 if (all_cpus) {
1101 CPU_FOREACH(cs) {
1102 monitor_printf(mon, "\nCPU#%d\n", cs->cpu_index);
1103 cpu_dump_state(cs, (FILE *)mon, monitor_fprintf, CPU_DUMP_FPU);
1104 }
1105 } else {
1106 cs = mon_get_cpu();
1107
1108 if (!cs) {
1109 monitor_printf(mon, "No CPU available\n");
1110 return;
1111 }
1112
1113 cpu_dump_state(cs, (FILE *)mon, monitor_fprintf, CPU_DUMP_FPU);
1114 }
1115 }
1116
1117 #ifdef CONFIG_TCG
1118 static void hmp_info_jit(Monitor *mon, const QDict *qdict)
1119 {
1120 if (!tcg_enabled()) {
1121 error_report("JIT information is only available with accel=tcg");
1122 return;
1123 }
1124
1125 dump_exec_info((FILE *)mon, monitor_fprintf);
1126 dump_drift_info((FILE *)mon, monitor_fprintf);
1127 }
1128
1129 static void hmp_info_opcount(Monitor *mon, const QDict *qdict)
1130 {
1131 dump_opcount_info((FILE *)mon, monitor_fprintf);
1132 }
1133 #endif
1134
1135 static void hmp_info_history(Monitor *mon, const QDict *qdict)
1136 {
1137 int i;
1138 const char *str;
1139
1140 if (!mon->rs)
1141 return;
1142 i = 0;
1143 for(;;) {
1144 str = readline_get_history(mon->rs, i);
1145 if (!str)
1146 break;
1147 monitor_printf(mon, "%d: '%s'\n", i, str);
1148 i++;
1149 }
1150 }
1151
1152 static void hmp_info_cpustats(Monitor *mon, const QDict *qdict)
1153 {
1154 CPUState *cs = mon_get_cpu();
1155
1156 if (!cs) {
1157 monitor_printf(mon, "No CPU available\n");
1158 return;
1159 }
1160 cpu_dump_statistics(cs, (FILE *)mon, &monitor_fprintf, 0);
1161 }
1162
1163 static void hmp_info_trace_events(Monitor *mon, const QDict *qdict)
1164 {
1165 const char *name = qdict_get_try_str(qdict, "name");
1166 bool has_vcpu = qdict_haskey(qdict, "vcpu");
1167 int vcpu = qdict_get_try_int(qdict, "vcpu", 0);
1168 TraceEventInfoList *events;
1169 TraceEventInfoList *elem;
1170 Error *local_err = NULL;
1171
1172 if (name == NULL) {
1173 name = "*";
1174 }
1175 if (vcpu < 0) {
1176 monitor_printf(mon, "argument vcpu must be positive");
1177 return;
1178 }
1179
1180 events = qmp_trace_event_get_state(name, has_vcpu, vcpu, &local_err);
1181 if (local_err) {
1182 error_report_err(local_err);
1183 return;
1184 }
1185
1186 for (elem = events; elem != NULL; elem = elem->next) {
1187 monitor_printf(mon, "%s : state %u\n",
1188 elem->value->name,
1189 elem->value->state == TRACE_EVENT_STATE_ENABLED ? 1 : 0);
1190 }
1191 qapi_free_TraceEventInfoList(events);
1192 }
1193
1194 void qmp_client_migrate_info(const char *protocol, const char *hostname,
1195 bool has_port, int64_t port,
1196 bool has_tls_port, int64_t tls_port,
1197 bool has_cert_subject, const char *cert_subject,
1198 Error **errp)
1199 {
1200 if (strcmp(protocol, "spice") == 0) {
1201 if (!qemu_using_spice(errp)) {
1202 return;
1203 }
1204
1205 if (!has_port && !has_tls_port) {
1206 error_setg(errp, QERR_MISSING_PARAMETER, "port/tls-port");
1207 return;
1208 }
1209
1210 if (qemu_spice_migrate_info(hostname,
1211 has_port ? port : -1,
1212 has_tls_port ? tls_port : -1,
1213 cert_subject)) {
1214 error_setg(errp, QERR_UNDEFINED_ERROR);
1215 return;
1216 }
1217 return;
1218 }
1219
1220 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "protocol", "spice");
1221 }
1222
1223 static void hmp_logfile(Monitor *mon, const QDict *qdict)
1224 {
1225 Error *err = NULL;
1226
1227 qemu_set_log_filename(qdict_get_str(qdict, "filename"), &err);
1228 if (err) {
1229 error_report_err(err);
1230 }
1231 }
1232
1233 static void hmp_log(Monitor *mon, const QDict *qdict)
1234 {
1235 int mask;
1236 const char *items = qdict_get_str(qdict, "items");
1237
1238 if (!strcmp(items, "none")) {
1239 mask = 0;
1240 } else {
1241 mask = qemu_str_to_log_mask(items);
1242 if (!mask) {
1243 help_cmd(mon, "log");
1244 return;
1245 }
1246 }
1247 qemu_set_log(mask);
1248 }
1249
1250 static void hmp_singlestep(Monitor *mon, const QDict *qdict)
1251 {
1252 const char *option = qdict_get_try_str(qdict, "option");
1253 if (!option || !strcmp(option, "on")) {
1254 singlestep = 1;
1255 } else if (!strcmp(option, "off")) {
1256 singlestep = 0;
1257 } else {
1258 monitor_printf(mon, "unexpected option %s\n", option);
1259 }
1260 }
1261
1262 static void hmp_gdbserver(Monitor *mon, const QDict *qdict)
1263 {
1264 const char *device = qdict_get_try_str(qdict, "device");
1265 if (!device)
1266 device = "tcp::" DEFAULT_GDBSTUB_PORT;
1267 if (gdbserver_start(device) < 0) {
1268 monitor_printf(mon, "Could not open gdbserver on device '%s'\n",
1269 device);
1270 } else if (strcmp(device, "none") == 0) {
1271 monitor_printf(mon, "Disabled gdbserver\n");
1272 } else {
1273 monitor_printf(mon, "Waiting for gdb connection on device '%s'\n",
1274 device);
1275 }
1276 }
1277
1278 static void hmp_watchdog_action(Monitor *mon, const QDict *qdict)
1279 {
1280 const char *action = qdict_get_str(qdict, "action");
1281 if (select_watchdog_action(action) == -1) {
1282 monitor_printf(mon, "Unknown watchdog action '%s'\n", action);
1283 }
1284 }
1285
1286 static void monitor_printc(Monitor *mon, int c)
1287 {
1288 monitor_printf(mon, "'");
1289 switch(c) {
1290 case '\'':
1291 monitor_printf(mon, "\\'");
1292 break;
1293 case '\\':
1294 monitor_printf(mon, "\\\\");
1295 break;
1296 case '\n':
1297 monitor_printf(mon, "\\n");
1298 break;
1299 case '\r':
1300 monitor_printf(mon, "\\r");
1301 break;
1302 default:
1303 if (c >= 32 && c <= 126) {
1304 monitor_printf(mon, "%c", c);
1305 } else {
1306 monitor_printf(mon, "\\x%02x", c);
1307 }
1308 break;
1309 }
1310 monitor_printf(mon, "'");
1311 }
1312
1313 static void memory_dump(Monitor *mon, int count, int format, int wsize,
1314 hwaddr addr, int is_physical)
1315 {
1316 int l, line_size, i, max_digits, len;
1317 uint8_t buf[16];
1318 uint64_t v;
1319 CPUState *cs = mon_get_cpu();
1320
1321 if (!cs && (format == 'i' || !is_physical)) {
1322 monitor_printf(mon, "Can not dump without CPU\n");
1323 return;
1324 }
1325
1326 if (format == 'i') {
1327 monitor_disas(mon, cs, addr, count, is_physical);
1328 return;
1329 }
1330
1331 len = wsize * count;
1332 if (wsize == 1)
1333 line_size = 8;
1334 else
1335 line_size = 16;
1336 max_digits = 0;
1337
1338 switch(format) {
1339 case 'o':
1340 max_digits = DIV_ROUND_UP(wsize * 8, 3);
1341 break;
1342 default:
1343 case 'x':
1344 max_digits = (wsize * 8) / 4;
1345 break;
1346 case 'u':
1347 case 'd':
1348 max_digits = DIV_ROUND_UP(wsize * 8 * 10, 33);
1349 break;
1350 case 'c':
1351 wsize = 1;
1352 break;
1353 }
1354
1355 while (len > 0) {
1356 if (is_physical)
1357 monitor_printf(mon, TARGET_FMT_plx ":", addr);
1358 else
1359 monitor_printf(mon, TARGET_FMT_lx ":", (target_ulong)addr);
1360 l = len;
1361 if (l > line_size)
1362 l = line_size;
1363 if (is_physical) {
1364 cpu_physical_memory_read(addr, buf, l);
1365 } else {
1366 if (cpu_memory_rw_debug(cs, addr, buf, l, 0) < 0) {
1367 monitor_printf(mon, " Cannot access memory\n");
1368 break;
1369 }
1370 }
1371 i = 0;
1372 while (i < l) {
1373 switch(wsize) {
1374 default:
1375 case 1:
1376 v = ldub_p(buf + i);
1377 break;
1378 case 2:
1379 v = lduw_p(buf + i);
1380 break;
1381 case 4:
1382 v = (uint32_t)ldl_p(buf + i);
1383 break;
1384 case 8:
1385 v = ldq_p(buf + i);
1386 break;
1387 }
1388 monitor_printf(mon, " ");
1389 switch(format) {
1390 case 'o':
1391 monitor_printf(mon, "%#*" PRIo64, max_digits, v);
1392 break;
1393 case 'x':
1394 monitor_printf(mon, "0x%0*" PRIx64, max_digits, v);
1395 break;
1396 case 'u':
1397 monitor_printf(mon, "%*" PRIu64, max_digits, v);
1398 break;
1399 case 'd':
1400 monitor_printf(mon, "%*" PRId64, max_digits, v);
1401 break;
1402 case 'c':
1403 monitor_printc(mon, v);
1404 break;
1405 }
1406 i += wsize;
1407 }
1408 monitor_printf(mon, "\n");
1409 addr += l;
1410 len -= l;
1411 }
1412 }
1413
1414 static void hmp_memory_dump(Monitor *mon, const QDict *qdict)
1415 {
1416 int count = qdict_get_int(qdict, "count");
1417 int format = qdict_get_int(qdict, "format");
1418 int size = qdict_get_int(qdict, "size");
1419 target_long addr = qdict_get_int(qdict, "addr");
1420
1421 memory_dump(mon, count, format, size, addr, 0);
1422 }
1423
1424 static void hmp_physical_memory_dump(Monitor *mon, const QDict *qdict)
1425 {
1426 int count = qdict_get_int(qdict, "count");
1427 int format = qdict_get_int(qdict, "format");
1428 int size = qdict_get_int(qdict, "size");
1429 hwaddr addr = qdict_get_int(qdict, "addr");
1430
1431 memory_dump(mon, count, format, size, addr, 1);
1432 }
1433
1434 static void *gpa2hva(MemoryRegion **p_mr, hwaddr addr, Error **errp)
1435 {
1436 MemoryRegionSection mrs = memory_region_find(get_system_memory(),
1437 addr, 1);
1438
1439 if (!mrs.mr) {
1440 error_setg(errp, "No memory is mapped at address 0x%" HWADDR_PRIx, addr);
1441 return NULL;
1442 }
1443
1444 if (!memory_region_is_ram(mrs.mr) && !memory_region_is_romd(mrs.mr)) {
1445 error_setg(errp, "Memory at address 0x%" HWADDR_PRIx "is not RAM", addr);
1446 memory_region_unref(mrs.mr);
1447 return NULL;
1448 }
1449
1450 *p_mr = mrs.mr;
1451 return qemu_map_ram_ptr(mrs.mr->ram_block, mrs.offset_within_region);
1452 }
1453
1454 static void hmp_gpa2hva(Monitor *mon, const QDict *qdict)
1455 {
1456 hwaddr addr = qdict_get_int(qdict, "addr");
1457 Error *local_err = NULL;
1458 MemoryRegion *mr = NULL;
1459 void *ptr;
1460
1461 ptr = gpa2hva(&mr, addr, &local_err);
1462 if (local_err) {
1463 error_report_err(local_err);
1464 return;
1465 }
1466
1467 monitor_printf(mon, "Host virtual address for 0x%" HWADDR_PRIx
1468 " (%s) is %p\n",
1469 addr, mr->name, ptr);
1470
1471 memory_region_unref(mr);
1472 }
1473
1474 #ifdef CONFIG_LINUX
1475 static uint64_t vtop(void *ptr, Error **errp)
1476 {
1477 uint64_t pinfo;
1478 uint64_t ret = -1;
1479 uintptr_t addr = (uintptr_t) ptr;
1480 uintptr_t pagesize = getpagesize();
1481 off_t offset = addr / pagesize * sizeof(pinfo);
1482 int fd;
1483
1484 fd = open("/proc/self/pagemap", O_RDONLY);
1485 if (fd == -1) {
1486 error_setg_errno(errp, errno, "Cannot open /proc/self/pagemap");
1487 return -1;
1488 }
1489
1490 /* Force copy-on-write if necessary. */
1491 atomic_add((uint8_t *)ptr, 0);
1492
1493 if (pread(fd, &pinfo, sizeof(pinfo), offset) != sizeof(pinfo)) {
1494 error_setg_errno(errp, errno, "Cannot read pagemap");
1495 goto out;
1496 }
1497 if ((pinfo & (1ull << 63)) == 0) {
1498 error_setg(errp, "Page not present");
1499 goto out;
1500 }
1501 ret = ((pinfo & 0x007fffffffffffffull) * pagesize) | (addr & (pagesize - 1));
1502
1503 out:
1504 close(fd);
1505 return ret;
1506 }
1507
1508 static void hmp_gpa2hpa(Monitor *mon, const QDict *qdict)
1509 {
1510 hwaddr addr = qdict_get_int(qdict, "addr");
1511 Error *local_err = NULL;
1512 MemoryRegion *mr = NULL;
1513 void *ptr;
1514 uint64_t physaddr;
1515
1516 ptr = gpa2hva(&mr, addr, &local_err);
1517 if (local_err) {
1518 error_report_err(local_err);
1519 return;
1520 }
1521
1522 physaddr = vtop(ptr, &local_err);
1523 if (local_err) {
1524 error_report_err(local_err);
1525 } else {
1526 monitor_printf(mon, "Host physical address for 0x%" HWADDR_PRIx
1527 " (%s) is 0x%" PRIx64 "\n",
1528 addr, mr->name, (uint64_t) physaddr);
1529 }
1530
1531 memory_region_unref(mr);
1532 }
1533 #endif
1534
1535 static void do_print(Monitor *mon, const QDict *qdict)
1536 {
1537 int format = qdict_get_int(qdict, "format");
1538 hwaddr val = qdict_get_int(qdict, "val");
1539
1540 switch(format) {
1541 case 'o':
1542 monitor_printf(mon, "%#" HWADDR_PRIo, val);
1543 break;
1544 case 'x':
1545 monitor_printf(mon, "%#" HWADDR_PRIx, val);
1546 break;
1547 case 'u':
1548 monitor_printf(mon, "%" HWADDR_PRIu, val);
1549 break;
1550 default:
1551 case 'd':
1552 monitor_printf(mon, "%" HWADDR_PRId, val);
1553 break;
1554 case 'c':
1555 monitor_printc(mon, val);
1556 break;
1557 }
1558 monitor_printf(mon, "\n");
1559 }
1560
1561 static void hmp_sum(Monitor *mon, const QDict *qdict)
1562 {
1563 uint32_t addr;
1564 uint16_t sum;
1565 uint32_t start = qdict_get_int(qdict, "start");
1566 uint32_t size = qdict_get_int(qdict, "size");
1567
1568 sum = 0;
1569 for(addr = start; addr < (start + size); addr++) {
1570 uint8_t val = address_space_ldub(&address_space_memory, addr,
1571 MEMTXATTRS_UNSPECIFIED, NULL);
1572 /* BSD sum algorithm ('sum' Unix command) */
1573 sum = (sum >> 1) | (sum << 15);
1574 sum += val;
1575 }
1576 monitor_printf(mon, "%05d\n", sum);
1577 }
1578
1579 static int mouse_button_state;
1580
1581 static void hmp_mouse_move(Monitor *mon, const QDict *qdict)
1582 {
1583 int dx, dy, dz, button;
1584 const char *dx_str = qdict_get_str(qdict, "dx_str");
1585 const char *dy_str = qdict_get_str(qdict, "dy_str");
1586 const char *dz_str = qdict_get_try_str(qdict, "dz_str");
1587
1588 dx = strtol(dx_str, NULL, 0);
1589 dy = strtol(dy_str, NULL, 0);
1590 qemu_input_queue_rel(NULL, INPUT_AXIS_X, dx);
1591 qemu_input_queue_rel(NULL, INPUT_AXIS_Y, dy);
1592
1593 if (dz_str) {
1594 dz = strtol(dz_str, NULL, 0);
1595 if (dz != 0) {
1596 button = (dz > 0) ? INPUT_BUTTON_WHEEL_UP : INPUT_BUTTON_WHEEL_DOWN;
1597 qemu_input_queue_btn(NULL, button, true);
1598 qemu_input_event_sync();
1599 qemu_input_queue_btn(NULL, button, false);
1600 }
1601 }
1602 qemu_input_event_sync();
1603 }
1604
1605 static void hmp_mouse_button(Monitor *mon, const QDict *qdict)
1606 {
1607 static uint32_t bmap[INPUT_BUTTON__MAX] = {
1608 [INPUT_BUTTON_LEFT] = MOUSE_EVENT_LBUTTON,
1609 [INPUT_BUTTON_MIDDLE] = MOUSE_EVENT_MBUTTON,
1610 [INPUT_BUTTON_RIGHT] = MOUSE_EVENT_RBUTTON,
1611 };
1612 int button_state = qdict_get_int(qdict, "button_state");
1613
1614 if (mouse_button_state == button_state) {
1615 return;
1616 }
1617 qemu_input_update_buttons(NULL, bmap, mouse_button_state, button_state);
1618 qemu_input_event_sync();
1619 mouse_button_state = button_state;
1620 }
1621
1622 static void hmp_ioport_read(Monitor *mon, const QDict *qdict)
1623 {
1624 int size = qdict_get_int(qdict, "size");
1625 int addr = qdict_get_int(qdict, "addr");
1626 int has_index = qdict_haskey(qdict, "index");
1627 uint32_t val;
1628 int suffix;
1629
1630 if (has_index) {
1631 int index = qdict_get_int(qdict, "index");
1632 cpu_outb(addr & IOPORTS_MASK, index & 0xff);
1633 addr++;
1634 }
1635 addr &= 0xffff;
1636
1637 switch(size) {
1638 default:
1639 case 1:
1640 val = cpu_inb(addr);
1641 suffix = 'b';
1642 break;
1643 case 2:
1644 val = cpu_inw(addr);
1645 suffix = 'w';
1646 break;
1647 case 4:
1648 val = cpu_inl(addr);
1649 suffix = 'l';
1650 break;
1651 }
1652 monitor_printf(mon, "port%c[0x%04x] = %#0*x\n",
1653 suffix, addr, size * 2, val);
1654 }
1655
1656 static void hmp_ioport_write(Monitor *mon, const QDict *qdict)
1657 {
1658 int size = qdict_get_int(qdict, "size");
1659 int addr = qdict_get_int(qdict, "addr");
1660 int val = qdict_get_int(qdict, "val");
1661
1662 addr &= IOPORTS_MASK;
1663
1664 switch (size) {
1665 default:
1666 case 1:
1667 cpu_outb(addr, val);
1668 break;
1669 case 2:
1670 cpu_outw(addr, val);
1671 break;
1672 case 4:
1673 cpu_outl(addr, val);
1674 break;
1675 }
1676 }
1677
1678 static void hmp_boot_set(Monitor *mon, const QDict *qdict)
1679 {
1680 Error *local_err = NULL;
1681 const char *bootdevice = qdict_get_str(qdict, "bootdevice");
1682
1683 qemu_boot_set(bootdevice, &local_err);
1684 if (local_err) {
1685 error_report_err(local_err);
1686 } else {
1687 monitor_printf(mon, "boot device list now set to %s\n", bootdevice);
1688 }
1689 }
1690
1691 static void hmp_info_mtree(Monitor *mon, const QDict *qdict)
1692 {
1693 bool flatview = qdict_get_try_bool(qdict, "flatview", false);
1694 bool dispatch_tree = qdict_get_try_bool(qdict, "dispatch_tree", false);
1695
1696 mtree_info((fprintf_function)monitor_printf, mon, flatview, dispatch_tree);
1697 }
1698
1699 static void hmp_info_numa(Monitor *mon, const QDict *qdict)
1700 {
1701 int i;
1702 NumaNodeMem *node_mem;
1703 CpuInfoList *cpu_list, *cpu;
1704
1705 cpu_list = qmp_query_cpus(&error_abort);
1706 node_mem = g_new0(NumaNodeMem, nb_numa_nodes);
1707
1708 query_numa_node_mem(node_mem);
1709 monitor_printf(mon, "%d nodes\n", nb_numa_nodes);
1710 for (i = 0; i < nb_numa_nodes; i++) {
1711 monitor_printf(mon, "node %d cpus:", i);
1712 for (cpu = cpu_list; cpu; cpu = cpu->next) {
1713 if (cpu->value->has_props && cpu->value->props->has_node_id &&
1714 cpu->value->props->node_id == i) {
1715 monitor_printf(mon, " %" PRIi64, cpu->value->CPU);
1716 }
1717 }
1718 monitor_printf(mon, "\n");
1719 monitor_printf(mon, "node %d size: %" PRId64 " MB\n", i,
1720 node_mem[i].node_mem >> 20);
1721 monitor_printf(mon, "node %d plugged: %" PRId64 " MB\n", i,
1722 node_mem[i].node_plugged_mem >> 20);
1723 }
1724 qapi_free_CpuInfoList(cpu_list);
1725 g_free(node_mem);
1726 }
1727
1728 #ifdef CONFIG_PROFILER
1729
1730 int64_t tcg_time;
1731 int64_t dev_time;
1732
1733 static void hmp_info_profile(Monitor *mon, const QDict *qdict)
1734 {
1735 monitor_printf(mon, "async time %" PRId64 " (%0.3f)\n",
1736 dev_time, dev_time / (double)NANOSECONDS_PER_SECOND);
1737 monitor_printf(mon, "qemu time %" PRId64 " (%0.3f)\n",
1738 tcg_time, tcg_time / (double)NANOSECONDS_PER_SECOND);
1739 tcg_time = 0;
1740 dev_time = 0;
1741 }
1742 #else
1743 static void hmp_info_profile(Monitor *mon, const QDict *qdict)
1744 {
1745 monitor_printf(mon, "Internal profiler not compiled\n");
1746 }
1747 #endif
1748
1749 /* Capture support */
1750 static QLIST_HEAD (capture_list_head, CaptureState) capture_head;
1751
1752 static void hmp_info_capture(Monitor *mon, const QDict *qdict)
1753 {
1754 int i;
1755 CaptureState *s;
1756
1757 for (s = capture_head.lh_first, i = 0; s; s = s->entries.le_next, ++i) {
1758 monitor_printf(mon, "[%d]: ", i);
1759 s->ops.info (s->opaque);
1760 }
1761 }
1762
1763 static void hmp_stopcapture(Monitor *mon, const QDict *qdict)
1764 {
1765 int i;
1766 int n = qdict_get_int(qdict, "n");
1767 CaptureState *s;
1768
1769 for (s = capture_head.lh_first, i = 0; s; s = s->entries.le_next, ++i) {
1770 if (i == n) {
1771 s->ops.destroy (s->opaque);
1772 QLIST_REMOVE (s, entries);
1773 g_free (s);
1774 return;
1775 }
1776 }
1777 }
1778
1779 static void hmp_wavcapture(Monitor *mon, const QDict *qdict)
1780 {
1781 const char *path = qdict_get_str(qdict, "path");
1782 int has_freq = qdict_haskey(qdict, "freq");
1783 int freq = qdict_get_try_int(qdict, "freq", -1);
1784 int has_bits = qdict_haskey(qdict, "bits");
1785 int bits = qdict_get_try_int(qdict, "bits", -1);
1786 int has_channels = qdict_haskey(qdict, "nchannels");
1787 int nchannels = qdict_get_try_int(qdict, "nchannels", -1);
1788 CaptureState *s;
1789
1790 s = g_malloc0 (sizeof (*s));
1791
1792 freq = has_freq ? freq : 44100;
1793 bits = has_bits ? bits : 16;
1794 nchannels = has_channels ? nchannels : 2;
1795
1796 if (wav_start_capture (s, path, freq, bits, nchannels)) {
1797 monitor_printf(mon, "Failed to add wave capture\n");
1798 g_free (s);
1799 return;
1800 }
1801 QLIST_INSERT_HEAD (&capture_head, s, entries);
1802 }
1803
1804 static qemu_acl *find_acl(Monitor *mon, const char *name)
1805 {
1806 qemu_acl *acl = qemu_acl_find(name);
1807
1808 if (!acl) {
1809 monitor_printf(mon, "acl: unknown list '%s'\n", name);
1810 }
1811 return acl;
1812 }
1813
1814 static void hmp_acl_show(Monitor *mon, const QDict *qdict)
1815 {
1816 const char *aclname = qdict_get_str(qdict, "aclname");
1817 qemu_acl *acl = find_acl(mon, aclname);
1818 qemu_acl_entry *entry;
1819 int i = 0;
1820
1821 if (acl) {
1822 monitor_printf(mon, "policy: %s\n",
1823 acl->defaultDeny ? "deny" : "allow");
1824 QTAILQ_FOREACH(entry, &acl->entries, next) {
1825 i++;
1826 monitor_printf(mon, "%d: %s %s\n", i,
1827 entry->deny ? "deny" : "allow", entry->match);
1828 }
1829 }
1830 }
1831
1832 static void hmp_acl_reset(Monitor *mon, const QDict *qdict)
1833 {
1834 const char *aclname = qdict_get_str(qdict, "aclname");
1835 qemu_acl *acl = find_acl(mon, aclname);
1836
1837 if (acl) {
1838 qemu_acl_reset(acl);
1839 monitor_printf(mon, "acl: removed all rules\n");
1840 }
1841 }
1842
1843 static void hmp_acl_policy(Monitor *mon, const QDict *qdict)
1844 {
1845 const char *aclname = qdict_get_str(qdict, "aclname");
1846 const char *policy = qdict_get_str(qdict, "policy");
1847 qemu_acl *acl = find_acl(mon, aclname);
1848
1849 if (acl) {
1850 if (strcmp(policy, "allow") == 0) {
1851 acl->defaultDeny = 0;
1852 monitor_printf(mon, "acl: policy set to 'allow'\n");
1853 } else if (strcmp(policy, "deny") == 0) {
1854 acl->defaultDeny = 1;
1855 monitor_printf(mon, "acl: policy set to 'deny'\n");
1856 } else {
1857 monitor_printf(mon, "acl: unknown policy '%s', "
1858 "expected 'deny' or 'allow'\n", policy);
1859 }
1860 }
1861 }
1862
1863 static void hmp_acl_add(Monitor *mon, const QDict *qdict)
1864 {
1865 const char *aclname = qdict_get_str(qdict, "aclname");
1866 const char *match = qdict_get_str(qdict, "match");
1867 const char *policy = qdict_get_str(qdict, "policy");
1868 int has_index = qdict_haskey(qdict, "index");
1869 int index = qdict_get_try_int(qdict, "index", -1);
1870 qemu_acl *acl = find_acl(mon, aclname);
1871 int deny, ret;
1872
1873 if (acl) {
1874 if (strcmp(policy, "allow") == 0) {
1875 deny = 0;
1876 } else if (strcmp(policy, "deny") == 0) {
1877 deny = 1;
1878 } else {
1879 monitor_printf(mon, "acl: unknown policy '%s', "
1880 "expected 'deny' or 'allow'\n", policy);
1881 return;
1882 }
1883 if (has_index)
1884 ret = qemu_acl_insert(acl, deny, match, index);
1885 else
1886 ret = qemu_acl_append(acl, deny, match);
1887 if (ret < 0)
1888 monitor_printf(mon, "acl: unable to add acl entry\n");
1889 else
1890 monitor_printf(mon, "acl: added rule at position %d\n", ret);
1891 }
1892 }
1893
1894 static void hmp_acl_remove(Monitor *mon, const QDict *qdict)
1895 {
1896 const char *aclname = qdict_get_str(qdict, "aclname");
1897 const char *match = qdict_get_str(qdict, "match");
1898 qemu_acl *acl = find_acl(mon, aclname);
1899 int ret;
1900
1901 if (acl) {
1902 ret = qemu_acl_remove(acl, match);
1903 if (ret < 0)
1904 monitor_printf(mon, "acl: no matching acl entry\n");
1905 else
1906 monitor_printf(mon, "acl: removed rule at position %d\n", ret);
1907 }
1908 }
1909
1910 void qmp_getfd(const char *fdname, Error **errp)
1911 {
1912 mon_fd_t *monfd;
1913 int fd;
1914
1915 fd = qemu_chr_fe_get_msgfd(&cur_mon->chr);
1916 if (fd == -1) {
1917 error_setg(errp, QERR_FD_NOT_SUPPLIED);
1918 return;
1919 }
1920
1921 if (qemu_isdigit(fdname[0])) {
1922 close(fd);
1923 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "fdname",
1924 "a name not starting with a digit");
1925 return;
1926 }
1927
1928 QLIST_FOREACH(monfd, &cur_mon->fds, next) {
1929 if (strcmp(monfd->name, fdname) != 0) {
1930 continue;
1931 }
1932
1933 close(monfd->fd);
1934 monfd->fd = fd;
1935 return;
1936 }
1937
1938 monfd = g_malloc0(sizeof(mon_fd_t));
1939 monfd->name = g_strdup(fdname);
1940 monfd->fd = fd;
1941
1942 QLIST_INSERT_HEAD(&cur_mon->fds, monfd, next);
1943 }
1944
1945 void qmp_closefd(const char *fdname, Error **errp)
1946 {
1947 mon_fd_t *monfd;
1948
1949 QLIST_FOREACH(monfd, &cur_mon->fds, next) {
1950 if (strcmp(monfd->name, fdname) != 0) {
1951 continue;
1952 }
1953
1954 QLIST_REMOVE(monfd, next);
1955 close(monfd->fd);
1956 g_free(monfd->name);
1957 g_free(monfd);
1958 return;
1959 }
1960
1961 error_setg(errp, QERR_FD_NOT_FOUND, fdname);
1962 }
1963
1964 int monitor_get_fd(Monitor *mon, const char *fdname, Error **errp)
1965 {
1966 mon_fd_t *monfd;
1967
1968 QLIST_FOREACH(monfd, &mon->fds, next) {
1969 int fd;
1970
1971 if (strcmp(monfd->name, fdname) != 0) {
1972 continue;
1973 }
1974
1975 fd = monfd->fd;
1976
1977 /* caller takes ownership of fd */
1978 QLIST_REMOVE(monfd, next);
1979 g_free(monfd->name);
1980 g_free(monfd);
1981
1982 return fd;
1983 }
1984
1985 error_setg(errp, "File descriptor named '%s' has not been found", fdname);
1986 return -1;
1987 }
1988
1989 static void monitor_fdset_cleanup(MonFdset *mon_fdset)
1990 {
1991 MonFdsetFd *mon_fdset_fd;
1992 MonFdsetFd *mon_fdset_fd_next;
1993
1994 QLIST_FOREACH_SAFE(mon_fdset_fd, &mon_fdset->fds, next, mon_fdset_fd_next) {
1995 if ((mon_fdset_fd->removed ||
1996 (QLIST_EMPTY(&mon_fdset->dup_fds) && mon_refcount == 0)) &&
1997 runstate_is_running()) {
1998 close(mon_fdset_fd->fd);
1999 g_free(mon_fdset_fd->opaque);
2000 QLIST_REMOVE(mon_fdset_fd, next);
2001 g_free(mon_fdset_fd);
2002 }
2003 }
2004
2005 if (QLIST_EMPTY(&mon_fdset->fds) && QLIST_EMPTY(&mon_fdset->dup_fds)) {
2006 QLIST_REMOVE(mon_fdset, next);
2007 g_free(mon_fdset);
2008 }
2009 }
2010
2011 static void monitor_fdsets_cleanup(void)
2012 {
2013 MonFdset *mon_fdset;
2014 MonFdset *mon_fdset_next;
2015
2016 QLIST_FOREACH_SAFE(mon_fdset, &mon_fdsets, next, mon_fdset_next) {
2017 monitor_fdset_cleanup(mon_fdset);
2018 }
2019 }
2020
2021 AddfdInfo *qmp_add_fd(bool has_fdset_id, int64_t fdset_id, bool has_opaque,
2022 const char *opaque, Error **errp)
2023 {
2024 int fd;
2025 Monitor *mon = cur_mon;
2026 AddfdInfo *fdinfo;
2027
2028 fd = qemu_chr_fe_get_msgfd(&mon->chr);
2029 if (fd == -1) {
2030 error_setg(errp, QERR_FD_NOT_SUPPLIED);
2031 goto error;
2032 }
2033
2034 fdinfo = monitor_fdset_add_fd(fd, has_fdset_id, fdset_id,
2035 has_opaque, opaque, errp);
2036 if (fdinfo) {
2037 return fdinfo;
2038 }
2039
2040 error:
2041 if (fd != -1) {
2042 close(fd);
2043 }
2044 return NULL;
2045 }
2046
2047 void qmp_remove_fd(int64_t fdset_id, bool has_fd, int64_t fd, Error **errp)
2048 {
2049 MonFdset *mon_fdset;
2050 MonFdsetFd *mon_fdset_fd;
2051 char fd_str[60];
2052
2053 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2054 if (mon_fdset->id != fdset_id) {
2055 continue;
2056 }
2057 QLIST_FOREACH(mon_fdset_fd, &mon_fdset->fds, next) {
2058 if (has_fd) {
2059 if (mon_fdset_fd->fd != fd) {
2060 continue;
2061 }
2062 mon_fdset_fd->removed = true;
2063 break;
2064 } else {
2065 mon_fdset_fd->removed = true;
2066 }
2067 }
2068 if (has_fd && !mon_fdset_fd) {
2069 goto error;
2070 }
2071 monitor_fdset_cleanup(mon_fdset);
2072 return;
2073 }
2074
2075 error:
2076 if (has_fd) {
2077 snprintf(fd_str, sizeof(fd_str), "fdset-id:%" PRId64 ", fd:%" PRId64,
2078 fdset_id, fd);
2079 } else {
2080 snprintf(fd_str, sizeof(fd_str), "fdset-id:%" PRId64, fdset_id);
2081 }
2082 error_setg(errp, QERR_FD_NOT_FOUND, fd_str);
2083 }
2084
2085 FdsetInfoList *qmp_query_fdsets(Error **errp)
2086 {
2087 MonFdset *mon_fdset;
2088 MonFdsetFd *mon_fdset_fd;
2089 FdsetInfoList *fdset_list = NULL;
2090
2091 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2092 FdsetInfoList *fdset_info = g_malloc0(sizeof(*fdset_info));
2093 FdsetFdInfoList *fdsetfd_list = NULL;
2094
2095 fdset_info->value = g_malloc0(sizeof(*fdset_info->value));
2096 fdset_info->value->fdset_id = mon_fdset->id;
2097
2098 QLIST_FOREACH(mon_fdset_fd, &mon_fdset->fds, next) {
2099 FdsetFdInfoList *fdsetfd_info;
2100
2101 fdsetfd_info = g_malloc0(sizeof(*fdsetfd_info));
2102 fdsetfd_info->value = g_malloc0(sizeof(*fdsetfd_info->value));
2103 fdsetfd_info->value->fd = mon_fdset_fd->fd;
2104 if (mon_fdset_fd->opaque) {
2105 fdsetfd_info->value->has_opaque = true;
2106 fdsetfd_info->value->opaque = g_strdup(mon_fdset_fd->opaque);
2107 } else {
2108 fdsetfd_info->value->has_opaque = false;
2109 }
2110
2111 fdsetfd_info->next = fdsetfd_list;
2112 fdsetfd_list = fdsetfd_info;
2113 }
2114
2115 fdset_info->value->fds = fdsetfd_list;
2116
2117 fdset_info->next = fdset_list;
2118 fdset_list = fdset_info;
2119 }
2120
2121 return fdset_list;
2122 }
2123
2124 AddfdInfo *monitor_fdset_add_fd(int fd, bool has_fdset_id, int64_t fdset_id,
2125 bool has_opaque, const char *opaque,
2126 Error **errp)
2127 {
2128 MonFdset *mon_fdset = NULL;
2129 MonFdsetFd *mon_fdset_fd;
2130 AddfdInfo *fdinfo;
2131
2132 if (has_fdset_id) {
2133 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2134 /* Break if match found or match impossible due to ordering by ID */
2135 if (fdset_id <= mon_fdset->id) {
2136 if (fdset_id < mon_fdset->id) {
2137 mon_fdset = NULL;
2138 }
2139 break;
2140 }
2141 }
2142 }
2143
2144 if (mon_fdset == NULL) {
2145 int64_t fdset_id_prev = -1;
2146 MonFdset *mon_fdset_cur = QLIST_FIRST(&mon_fdsets);
2147
2148 if (has_fdset_id) {
2149 if (fdset_id < 0) {
2150 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "fdset-id",
2151 "a non-negative value");
2152 return NULL;
2153 }
2154 /* Use specified fdset ID */
2155 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2156 mon_fdset_cur = mon_fdset;
2157 if (fdset_id < mon_fdset_cur->id) {
2158 break;
2159 }
2160 }
2161 } else {
2162 /* Use first available fdset ID */
2163 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2164 mon_fdset_cur = mon_fdset;
2165 if (fdset_id_prev == mon_fdset_cur->id - 1) {
2166 fdset_id_prev = mon_fdset_cur->id;
2167 continue;
2168 }
2169 break;
2170 }
2171 }
2172
2173 mon_fdset = g_malloc0(sizeof(*mon_fdset));
2174 if (has_fdset_id) {
2175 mon_fdset->id = fdset_id;
2176 } else {
2177 mon_fdset->id = fdset_id_prev + 1;
2178 }
2179
2180 /* The fdset list is ordered by fdset ID */
2181 if (!mon_fdset_cur) {
2182 QLIST_INSERT_HEAD(&mon_fdsets, mon_fdset, next);
2183 } else if (mon_fdset->id < mon_fdset_cur->id) {
2184 QLIST_INSERT_BEFORE(mon_fdset_cur, mon_fdset, next);
2185 } else {
2186 QLIST_INSERT_AFTER(mon_fdset_cur, mon_fdset, next);
2187 }
2188 }
2189
2190 mon_fdset_fd = g_malloc0(sizeof(*mon_fdset_fd));
2191 mon_fdset_fd->fd = fd;
2192 mon_fdset_fd->removed = false;
2193 if (has_opaque) {
2194 mon_fdset_fd->opaque = g_strdup(opaque);
2195 }
2196 QLIST_INSERT_HEAD(&mon_fdset->fds, mon_fdset_fd, next);
2197
2198 fdinfo = g_malloc0(sizeof(*fdinfo));
2199 fdinfo->fdset_id = mon_fdset->id;
2200 fdinfo->fd = mon_fdset_fd->fd;
2201
2202 return fdinfo;
2203 }
2204
2205 int monitor_fdset_get_fd(int64_t fdset_id, int flags)
2206 {
2207 #ifndef _WIN32
2208 MonFdset *mon_fdset;
2209 MonFdsetFd *mon_fdset_fd;
2210 int mon_fd_flags;
2211
2212 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2213 if (mon_fdset->id != fdset_id) {
2214 continue;
2215 }
2216 QLIST_FOREACH(mon_fdset_fd, &mon_fdset->fds, next) {
2217 mon_fd_flags = fcntl(mon_fdset_fd->fd, F_GETFL);
2218 if (mon_fd_flags == -1) {
2219 return -1;
2220 }
2221
2222 if ((flags & O_ACCMODE) == (mon_fd_flags & O_ACCMODE)) {
2223 return mon_fdset_fd->fd;
2224 }
2225 }
2226 errno = EACCES;
2227 return -1;
2228 }
2229 #endif
2230
2231 errno = ENOENT;
2232 return -1;
2233 }
2234
2235 int monitor_fdset_dup_fd_add(int64_t fdset_id, int dup_fd)
2236 {
2237 MonFdset *mon_fdset;
2238 MonFdsetFd *mon_fdset_fd_dup;
2239
2240 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2241 if (mon_fdset->id != fdset_id) {
2242 continue;
2243 }
2244 QLIST_FOREACH(mon_fdset_fd_dup, &mon_fdset->dup_fds, next) {
2245 if (mon_fdset_fd_dup->fd == dup_fd) {
2246 return -1;
2247 }
2248 }
2249 mon_fdset_fd_dup = g_malloc0(sizeof(*mon_fdset_fd_dup));
2250 mon_fdset_fd_dup->fd = dup_fd;
2251 QLIST_INSERT_HEAD(&mon_fdset->dup_fds, mon_fdset_fd_dup, next);
2252 return 0;
2253 }
2254 return -1;
2255 }
2256
2257 static int monitor_fdset_dup_fd_find_remove(int dup_fd, bool remove)
2258 {
2259 MonFdset *mon_fdset;
2260 MonFdsetFd *mon_fdset_fd_dup;
2261
2262 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2263 QLIST_FOREACH(mon_fdset_fd_dup, &mon_fdset->dup_fds, next) {
2264 if (mon_fdset_fd_dup->fd == dup_fd) {
2265 if (remove) {
2266 QLIST_REMOVE(mon_fdset_fd_dup, next);
2267 if (QLIST_EMPTY(&mon_fdset->dup_fds)) {
2268 monitor_fdset_cleanup(mon_fdset);
2269 }
2270 return -1;
2271 } else {
2272 return mon_fdset->id;
2273 }
2274 }
2275 }
2276 }
2277 return -1;
2278 }
2279
2280 int monitor_fdset_dup_fd_find(int dup_fd)
2281 {
2282 return monitor_fdset_dup_fd_find_remove(dup_fd, false);
2283 }
2284
2285 void monitor_fdset_dup_fd_remove(int dup_fd)
2286 {
2287 monitor_fdset_dup_fd_find_remove(dup_fd, true);
2288 }
2289
2290 int monitor_fd_param(Monitor *mon, const char *fdname, Error **errp)
2291 {
2292 int fd;
2293 Error *local_err = NULL;
2294
2295 if (!qemu_isdigit(fdname[0]) && mon) {
2296 fd = monitor_get_fd(mon, fdname, &local_err);
2297 } else {
2298 fd = qemu_parse_fd(fdname);
2299 if (fd == -1) {
2300 error_setg(&local_err, "Invalid file descriptor number '%s'",
2301 fdname);
2302 }
2303 }
2304 if (local_err) {
2305 error_propagate(errp, local_err);
2306 assert(fd == -1);
2307 } else {
2308 assert(fd != -1);
2309 }
2310
2311 return fd;
2312 }
2313
2314 /* Please update hmp-commands.hx when adding or changing commands */
2315 static mon_cmd_t info_cmds[] = {
2316 #include "hmp-commands-info.h"
2317 { NULL, NULL, },
2318 };
2319
2320 /* mon_cmds and info_cmds would be sorted at runtime */
2321 static mon_cmd_t mon_cmds[] = {
2322 #include "hmp-commands.h"
2323 { NULL, NULL, },
2324 };
2325
2326 /*******************************************************************/
2327
2328 static const char *pch;
2329 static sigjmp_buf expr_env;
2330
2331
2332 static void GCC_FMT_ATTR(2, 3) QEMU_NORETURN
2333 expr_error(Monitor *mon, const char *fmt, ...)
2334 {
2335 va_list ap;
2336 va_start(ap, fmt);
2337 monitor_vprintf(mon, fmt, ap);
2338 monitor_printf(mon, "\n");
2339 va_end(ap);
2340 siglongjmp(expr_env, 1);
2341 }
2342
2343 /* return 0 if OK, -1 if not found */
2344 static int get_monitor_def(target_long *pval, const char *name)
2345 {
2346 const MonitorDef *md = target_monitor_defs();
2347 CPUState *cs = mon_get_cpu();
2348 void *ptr;
2349 uint64_t tmp = 0;
2350 int ret;
2351
2352 if (cs == NULL || md == NULL) {
2353 return -1;
2354 }
2355
2356 for(; md->name != NULL; md++) {
2357 if (compare_cmd(name, md->name)) {
2358 if (md->get_value) {
2359 *pval = md->get_value(md, md->offset);
2360 } else {
2361 CPUArchState *env = mon_get_cpu_env();
2362 ptr = (uint8_t *)env + md->offset;
2363 switch(md->type) {
2364 case MD_I32:
2365 *pval = *(int32_t *)ptr;
2366 break;
2367 case MD_TLONG:
2368 *pval = *(target_long *)ptr;
2369 break;
2370 default:
2371 *pval = 0;
2372 break;
2373 }
2374 }
2375 return 0;
2376 }
2377 }
2378
2379 ret = target_get_monitor_def(cs, name, &tmp);
2380 if (!ret) {
2381 *pval = (target_long) tmp;
2382 }
2383
2384 return ret;
2385 }
2386
2387 static void next(void)
2388 {
2389 if (*pch != '\0') {
2390 pch++;
2391 while (qemu_isspace(*pch))
2392 pch++;
2393 }
2394 }
2395
2396 static int64_t expr_sum(Monitor *mon);
2397
2398 static int64_t expr_unary(Monitor *mon)
2399 {
2400 int64_t n;
2401 char *p;
2402 int ret;
2403
2404 switch(*pch) {
2405 case '+':
2406 next();
2407 n = expr_unary(mon);
2408 break;
2409 case '-':
2410 next();
2411 n = -expr_unary(mon);
2412 break;
2413 case '~':
2414 next();
2415 n = ~expr_unary(mon);
2416 break;
2417 case '(':
2418 next();
2419 n = expr_sum(mon);
2420 if (*pch != ')') {
2421 expr_error(mon, "')' expected");
2422 }
2423 next();
2424 break;
2425 case '\'':
2426 pch++;
2427 if (*pch == '\0')
2428 expr_error(mon, "character constant expected");
2429 n = *pch;
2430 pch++;
2431 if (*pch != '\'')
2432 expr_error(mon, "missing terminating \' character");
2433 next();
2434 break;
2435 case '$':
2436 {
2437 char buf[128], *q;
2438 target_long reg=0;
2439
2440 pch++;
2441 q = buf;
2442 while ((*pch >= 'a' && *pch <= 'z') ||
2443 (*pch >= 'A' && *pch <= 'Z') ||
2444 (*pch >= '0' && *pch <= '9') ||
2445 *pch == '_' || *pch == '.') {
2446 if ((q - buf) < sizeof(buf) - 1)
2447 *q++ = *pch;
2448 pch++;
2449 }
2450 while (qemu_isspace(*pch))
2451 pch++;
2452 *q = 0;
2453 ret = get_monitor_def(&reg, buf);
2454 if (ret < 0)
2455 expr_error(mon, "unknown register");
2456 n = reg;
2457 }
2458 break;
2459 case '\0':
2460 expr_error(mon, "unexpected end of expression");
2461 n = 0;
2462 break;
2463 default:
2464 errno = 0;
2465 n = strtoull(pch, &p, 0);
2466 if (errno == ERANGE) {
2467 expr_error(mon, "number too large");
2468 }
2469 if (pch == p) {
2470 expr_error(mon, "invalid char '%c' in expression", *p);
2471 }
2472 pch = p;
2473 while (qemu_isspace(*pch))
2474 pch++;
2475 break;
2476 }
2477 return n;
2478 }
2479
2480
2481 static int64_t expr_prod(Monitor *mon)
2482 {
2483 int64_t val, val2;
2484 int op;
2485
2486 val = expr_unary(mon);
2487 for(;;) {
2488 op = *pch;
2489 if (op != '*' && op != '/' && op != '%')
2490 break;
2491 next();
2492 val2 = expr_unary(mon);
2493 switch(op) {
2494 default:
2495 case '*':
2496 val *= val2;
2497 break;
2498 case '/':
2499 case '%':
2500 if (val2 == 0)
2501 expr_error(mon, "division by zero");
2502 if (op == '/')
2503 val /= val2;
2504 else
2505 val %= val2;
2506 break;
2507 }
2508 }
2509 return val;
2510 }
2511
2512 static int64_t expr_logic(Monitor *mon)
2513 {
2514 int64_t val, val2;
2515 int op;
2516
2517 val = expr_prod(mon);
2518 for(;;) {
2519 op = *pch;
2520 if (op != '&' && op != '|' && op != '^')
2521 break;
2522 next();
2523 val2 = expr_prod(mon);
2524 switch(op) {
2525 default:
2526 case '&':
2527 val &= val2;
2528 break;
2529 case '|':
2530 val |= val2;
2531 break;
2532 case '^':
2533 val ^= val2;
2534 break;
2535 }
2536 }
2537 return val;
2538 }
2539
2540 static int64_t expr_sum(Monitor *mon)
2541 {
2542 int64_t val, val2;
2543 int op;
2544
2545 val = expr_logic(mon);
2546 for(;;) {
2547 op = *pch;
2548 if (op != '+' && op != '-')
2549 break;
2550 next();
2551 val2 = expr_logic(mon);
2552 if (op == '+')
2553 val += val2;
2554 else
2555 val -= val2;
2556 }
2557 return val;
2558 }
2559
2560 static int get_expr(Monitor *mon, int64_t *pval, const char **pp)
2561 {
2562 pch = *pp;
2563 if (sigsetjmp(expr_env, 0)) {
2564 *pp = pch;
2565 return -1;
2566 }
2567 while (qemu_isspace(*pch))
2568 pch++;
2569 *pval = expr_sum(mon);
2570 *pp = pch;
2571 return 0;
2572 }
2573
2574 static int get_double(Monitor *mon, double *pval, const char **pp)
2575 {
2576 const char *p = *pp;
2577 char *tailp;
2578 double d;
2579
2580 d = strtod(p, &tailp);
2581 if (tailp == p) {
2582 monitor_printf(mon, "Number expected\n");
2583 return -1;
2584 }
2585 if (d != d || d - d != 0) {
2586 /* NaN or infinity */
2587 monitor_printf(mon, "Bad number\n");
2588 return -1;
2589 }
2590 *pval = d;
2591 *pp = tailp;
2592 return 0;
2593 }
2594
2595 /*
2596 * Store the command-name in cmdname, and return a pointer to
2597 * the remaining of the command string.
2598 */
2599 static const char *get_command_name(const char *cmdline,
2600 char *cmdname, size_t nlen)
2601 {
2602 size_t len;
2603 const char *p, *pstart;
2604
2605 p = cmdline;
2606 while (qemu_isspace(*p))
2607 p++;
2608 if (*p == '\0')
2609 return NULL;
2610 pstart = p;
2611 while (*p != '\0' && *p != '/' && !qemu_isspace(*p))
2612 p++;
2613 len = p - pstart;
2614 if (len > nlen - 1)
2615 len = nlen - 1;
2616 memcpy(cmdname, pstart, len);
2617 cmdname[len] = '\0';
2618 return p;
2619 }
2620
2621 /**
2622 * Read key of 'type' into 'key' and return the current
2623 * 'type' pointer.
2624 */
2625 static char *key_get_info(const char *type, char **key)
2626 {
2627 size_t len;
2628 char *p, *str;
2629
2630 if (*type == ',')
2631 type++;
2632
2633 p = strchr(type, ':');
2634 if (!p) {
2635 *key = NULL;
2636 return NULL;
2637 }
2638 len = p - type;
2639
2640 str = g_malloc(len + 1);
2641 memcpy(str, type, len);
2642 str[len] = '\0';
2643
2644 *key = str;
2645 return ++p;
2646 }
2647
2648 static int default_fmt_format = 'x';
2649 static int default_fmt_size = 4;
2650
2651 static int is_valid_option(const char *c, const char *typestr)
2652 {
2653 char option[3];
2654
2655 option[0] = '-';
2656 option[1] = *c;
2657 option[2] = '\0';
2658
2659 typestr = strstr(typestr, option);
2660 return (typestr != NULL);
2661 }
2662
2663 static const mon_cmd_t *search_dispatch_table(const mon_cmd_t *disp_table,
2664 const char *cmdname)
2665 {
2666 const mon_cmd_t *cmd;
2667
2668 for (cmd = disp_table; cmd->name != NULL; cmd++) {
2669 if (compare_cmd(cmdname, cmd->name)) {
2670 return cmd;
2671 }
2672 }
2673
2674 return NULL;
2675 }
2676
2677 /*
2678 * Parse command name from @cmdp according to command table @table.
2679 * If blank, return NULL.
2680 * Else, if no valid command can be found, report to @mon, and return
2681 * NULL.
2682 * Else, change @cmdp to point right behind the name, and return its
2683 * command table entry.
2684 * Do not assume the return value points into @table! It doesn't when
2685 * the command is found in a sub-command table.
2686 */
2687 static const mon_cmd_t *monitor_parse_command(Monitor *mon,
2688 const char *cmdp_start,
2689 const char **cmdp,
2690 mon_cmd_t *table)
2691 {
2692 const char *p;
2693 const mon_cmd_t *cmd;
2694 char cmdname[256];
2695
2696 /* extract the command name */
2697 p = get_command_name(*cmdp, cmdname, sizeof(cmdname));
2698 if (!p)
2699 return NULL;
2700
2701 cmd = search_dispatch_table(table, cmdname);
2702 if (!cmd) {
2703 monitor_printf(mon, "unknown command: '%.*s'\n",
2704 (int)(p - cmdp_start), cmdp_start);
2705 return NULL;
2706 }
2707
2708 /* filter out following useless space */
2709 while (qemu_isspace(*p)) {
2710 p++;
2711 }
2712
2713 *cmdp = p;
2714 /* search sub command */
2715 if (cmd->sub_table != NULL && *p != '\0') {
2716 return monitor_parse_command(mon, cmdp_start, cmdp, cmd->sub_table);
2717 }
2718
2719 return cmd;
2720 }
2721
2722 /*
2723 * Parse arguments for @cmd.
2724 * If it can't be parsed, report to @mon, and return NULL.
2725 * Else, insert command arguments into a QDict, and return it.
2726 * Note: On success, caller has to free the QDict structure.
2727 */
2728
2729 static QDict *monitor_parse_arguments(Monitor *mon,
2730 const char **endp,
2731 const mon_cmd_t *cmd)
2732 {
2733 const char *typestr;
2734 char *key;
2735 int c;
2736 const char *p = *endp;
2737 char buf[1024];
2738 QDict *qdict = qdict_new();
2739
2740 /* parse the parameters */
2741 typestr = cmd->args_type;
2742 for(;;) {
2743 typestr = key_get_info(typestr, &key);
2744 if (!typestr)
2745 break;
2746 c = *typestr;
2747 typestr++;
2748 switch(c) {
2749 case 'F':
2750 case 'B':
2751 case 's':
2752 {
2753 int ret;
2754
2755 while (qemu_isspace(*p))
2756 p++;
2757 if (*typestr == '?') {
2758 typestr++;
2759 if (*p == '\0') {
2760 /* no optional string: NULL argument */
2761 break;
2762 }
2763 }
2764 ret = get_str(buf, sizeof(buf), &p);
2765 if (ret < 0) {
2766 switch(c) {
2767 case 'F':
2768 monitor_printf(mon, "%s: filename expected\n",
2769 cmd->name);
2770 break;
2771 case 'B':
2772 monitor_printf(mon, "%s: block device name expected\n",
2773 cmd->name);
2774 break;
2775 default:
2776 monitor_printf(mon, "%s: string expected\n", cmd->name);
2777 break;
2778 }
2779 goto fail;
2780 }
2781 qdict_put_str(qdict, key, buf);
2782 }
2783 break;
2784 case 'O':
2785 {
2786 QemuOptsList *opts_list;
2787 QemuOpts *opts;
2788
2789 opts_list = qemu_find_opts(key);
2790 if (!opts_list || opts_list->desc->name) {
2791 goto bad_type;
2792 }
2793 while (qemu_isspace(*p)) {
2794 p++;
2795 }
2796 if (!*p)
2797 break;
2798 if (get_str(buf, sizeof(buf), &p) < 0) {
2799 goto fail;
2800 }
2801 opts = qemu_opts_parse_noisily(opts_list, buf, true);
2802 if (!opts) {
2803 goto fail;
2804 }
2805 qemu_opts_to_qdict(opts, qdict);
2806 qemu_opts_del(opts);
2807 }
2808 break;
2809 case '/':
2810 {
2811 int count, format, size;
2812
2813 while (qemu_isspace(*p))
2814 p++;
2815 if (*p == '/') {
2816 /* format found */
2817 p++;
2818 count = 1;
2819 if (qemu_isdigit(*p)) {
2820 count = 0;
2821 while (qemu_isdigit(*p)) {
2822 count = count * 10 + (*p - '0');
2823 p++;
2824 }
2825 }
2826 size = -1;
2827 format = -1;
2828 for(;;) {
2829 switch(*p) {
2830 case 'o':
2831 case 'd':
2832 case 'u':
2833 case 'x':
2834 case 'i':
2835 case 'c':
2836 format = *p++;
2837 break;
2838 case 'b':
2839 size = 1;
2840 p++;
2841 break;
2842 case 'h':
2843 size = 2;
2844 p++;
2845 break;
2846 case 'w':
2847 size = 4;
2848 p++;
2849 break;
2850 case 'g':
2851 case 'L':
2852 size = 8;
2853 p++;
2854 break;
2855 default:
2856 goto next;
2857 }
2858 }
2859 next:
2860 if (*p != '\0' && !qemu_isspace(*p)) {
2861 monitor_printf(mon, "invalid char in format: '%c'\n",
2862 *p);
2863 goto fail;
2864 }
2865 if (format < 0)
2866 format = default_fmt_format;
2867 if (format != 'i') {
2868 /* for 'i', not specifying a size gives -1 as size */
2869 if (size < 0)
2870 size = default_fmt_size;
2871 default_fmt_size = size;
2872 }
2873 default_fmt_format = format;
2874 } else {
2875 count = 1;
2876 format = default_fmt_format;
2877 if (format != 'i') {
2878 size = default_fmt_size;
2879 } else {
2880 size = -1;
2881 }
2882 }
2883 qdict_put_int(qdict, "count", count);
2884 qdict_put_int(qdict, "format", format);
2885 qdict_put_int(qdict, "size", size);
2886 }
2887 break;
2888 case 'i':
2889 case 'l':
2890 case 'M':
2891 {
2892 int64_t val;
2893
2894 while (qemu_isspace(*p))
2895 p++;
2896 if (*typestr == '?' || *typestr == '.') {
2897 if (*typestr == '?') {
2898 if (*p == '\0') {
2899 typestr++;
2900 break;
2901 }
2902 } else {
2903 if (*p == '.') {
2904 p++;
2905 while (qemu_isspace(*p))
2906 p++;
2907 } else {
2908 typestr++;
2909 break;
2910 }
2911 }
2912 typestr++;
2913 }
2914 if (get_expr(mon, &val, &p))
2915 goto fail;
2916 /* Check if 'i' is greater than 32-bit */
2917 if ((c == 'i') && ((val >> 32) & 0xffffffff)) {
2918 monitor_printf(mon, "\'%s\' has failed: ", cmd->name);
2919 monitor_printf(mon, "integer is for 32-bit values\n");
2920 goto fail;
2921 } else if (c == 'M') {
2922 if (val < 0) {
2923 monitor_printf(mon, "enter a positive value\n");
2924 goto fail;
2925 }
2926 val <<= 20;
2927 }
2928 qdict_put_int(qdict, key, val);
2929 }
2930 break;
2931 case 'o':
2932 {
2933 int ret;
2934 uint64_t val;
2935 char *end;
2936
2937 while (qemu_isspace(*p)) {
2938 p++;
2939 }
2940 if (*typestr == '?') {
2941 typestr++;
2942 if (*p == '\0') {
2943 break;
2944 }
2945 }
2946 ret = qemu_strtosz_MiB(p, &end, &val);
2947 if (ret < 0 || val > INT64_MAX) {
2948 monitor_printf(mon, "invalid size\n");
2949 goto fail;
2950 }
2951 qdict_put_int(qdict, key, val);
2952 p = end;
2953 }
2954 break;
2955 case 'T':
2956 {
2957 double val;
2958
2959 while (qemu_isspace(*p))
2960 p++;
2961 if (*typestr == '?') {
2962 typestr++;
2963 if (*p == '\0') {
2964 break;
2965 }
2966 }
2967 if (get_double(mon, &val, &p) < 0) {
2968 goto fail;
2969 }
2970 if (p[0] && p[1] == 's') {
2971 switch (*p) {
2972 case 'm':
2973 val /= 1e3; p += 2; break;
2974 case 'u':
2975 val /= 1e6; p += 2; break;
2976 case 'n':
2977 val /= 1e9; p += 2; break;
2978 }
2979 }
2980 if (*p && !qemu_isspace(*p)) {
2981 monitor_printf(mon, "Unknown unit suffix\n");
2982 goto fail;
2983 }
2984 qdict_put(qdict, key, qnum_from_double(val));
2985 }
2986 break;
2987 case 'b':
2988 {
2989 const char *beg;
2990 bool val;
2991
2992 while (qemu_isspace(*p)) {
2993 p++;
2994 }
2995 beg = p;
2996 while (qemu_isgraph(*p)) {
2997 p++;
2998 }
2999 if (p - beg == 2 && !memcmp(beg, "on", p - beg)) {
3000 val = true;
3001 } else if (p - beg == 3 && !memcmp(beg, "off", p - beg)) {
3002 val = false;
3003 } else {
3004 monitor_printf(mon, "Expected 'on' or 'off'\n");
3005 goto fail;
3006 }
3007 qdict_put_bool(qdict, key, val);
3008 }
3009 break;
3010 case '-':
3011 {
3012 const char *tmp = p;
3013 int skip_key = 0;
3014 /* option */
3015
3016 c = *typestr++;
3017 if (c == '\0')
3018 goto bad_type;
3019 while (qemu_isspace(*p))
3020 p++;
3021 if (*p == '-') {
3022 p++;
3023 if(c != *p) {
3024 if(!is_valid_option(p, typestr)) {
3025
3026 monitor_printf(mon, "%s: unsupported option -%c\n",
3027 cmd->name, *p);
3028 goto fail;
3029 } else {
3030 skip_key = 1;
3031 }
3032 }
3033 if(skip_key) {
3034 p = tmp;
3035 } else {
3036 /* has option */
3037 p++;
3038 qdict_put_bool(qdict, key, true);
3039 }
3040 }
3041 }
3042 break;
3043 case 'S':
3044 {
3045 /* package all remaining string */
3046 int len;
3047
3048 while (qemu_isspace(*p)) {
3049 p++;
3050 }
3051 if (*typestr == '?') {
3052 typestr++;
3053 if (*p == '\0') {
3054 /* no remaining string: NULL argument */
3055 break;
3056 }
3057 }
3058 len = strlen(p);
3059 if (len <= 0) {
3060 monitor_printf(mon, "%s: string expected\n",
3061 cmd->name);
3062 goto fail;
3063 }
3064 qdict_put_str(qdict, key, p);
3065 p += len;
3066 }
3067 break;
3068 default:
3069 bad_type:
3070 monitor_printf(mon, "%s: unknown type '%c'\n", cmd->name, c);
3071 goto fail;
3072 }
3073 g_free(key);
3074 key = NULL;
3075 }
3076 /* check that all arguments were parsed */
3077 while (qemu_isspace(*p))
3078 p++;
3079 if (*p != '\0') {
3080 monitor_printf(mon, "%s: extraneous characters at the end of line\n",
3081 cmd->name);
3082 goto fail;
3083 }
3084
3085 return qdict;
3086
3087 fail:
3088 QDECREF(qdict);
3089 g_free(key);
3090 return NULL;
3091 }
3092
3093 static void handle_hmp_command(Monitor *mon, const char *cmdline)
3094 {
3095 QDict *qdict;
3096 const mon_cmd_t *cmd;
3097
3098 trace_handle_hmp_command(mon, cmdline);
3099
3100 cmd = monitor_parse_command(mon, cmdline, &cmdline, mon->cmd_table);
3101 if (!cmd) {
3102 return;
3103 }
3104
3105 qdict = monitor_parse_arguments(mon, &cmdline, cmd);
3106 if (!qdict) {
3107 monitor_printf(mon, "Try \"help %s\" for more information\n",
3108 cmd->name);
3109 return;
3110 }
3111
3112 cmd->cmd(mon, qdict);
3113 QDECREF(qdict);
3114 }
3115
3116 static void cmd_completion(Monitor *mon, const char *name, const char *list)
3117 {
3118 const char *p, *pstart;
3119 char cmd[128];
3120 int len;
3121
3122 p = list;
3123 for(;;) {
3124 pstart = p;
3125 p = strchr(p, '|');
3126 if (!p)
3127 p = pstart + strlen(pstart);
3128 len = p - pstart;
3129 if (len > sizeof(cmd) - 2)
3130 len = sizeof(cmd) - 2;
3131 memcpy(cmd, pstart, len);
3132 cmd[len] = '\0';
3133 if (name[0] == '\0' || !strncmp(name, cmd, strlen(name))) {
3134 readline_add_completion(mon->rs, cmd);
3135 }
3136 if (*p == '\0')
3137 break;
3138 p++;
3139 }
3140 }
3141
3142 static void file_completion(Monitor *mon, const char *input)
3143 {
3144 DIR *ffs;
3145 struct dirent *d;
3146 char path[1024];
3147 char file[1024], file_prefix[1024];
3148 int input_path_len;
3149 const char *p;
3150
3151 p = strrchr(input, '/');
3152 if (!p) {
3153 input_path_len = 0;
3154 pstrcpy(file_prefix, sizeof(file_prefix), input);
3155 pstrcpy(path, sizeof(path), ".");
3156 } else {
3157 input_path_len = p - input + 1;
3158 memcpy(path, input, input_path_len);
3159 if (input_path_len > sizeof(path) - 1)
3160 input_path_len = sizeof(path) - 1;
3161 path[input_path_len] = '\0';
3162 pstrcpy(file_prefix, sizeof(file_prefix), p + 1);
3163 }
3164
3165 ffs = opendir(path);
3166 if (!ffs)
3167 return;
3168 for(;;) {
3169 struct stat sb;
3170 d = readdir(ffs);
3171 if (!d)
3172 break;
3173
3174 if (strcmp(d->d_name, ".") == 0 || strcmp(d->d_name, "..") == 0) {
3175 continue;
3176 }
3177
3178 if (strstart(d->d_name, file_prefix, NULL)) {
3179 memcpy(file, input, input_path_len);
3180 if (input_path_len < sizeof(file))
3181 pstrcpy(file + input_path_len, sizeof(file) - input_path_len,
3182 d->d_name);
3183 /* stat the file to find out if it's a directory.
3184 * In that case add a slash to speed up typing long paths
3185 */
3186 if (stat(file, &sb) == 0 && S_ISDIR(sb.st_mode)) {
3187 pstrcat(file, sizeof(file), "/");
3188 }
3189 readline_add_completion(mon->rs, file);
3190 }
3191 }
3192 closedir(ffs);
3193 }
3194
3195 static const char *next_arg_type(const char *typestr)
3196 {
3197 const char *p = strchr(typestr, ':');
3198 return (p != NULL ? ++p : typestr);
3199 }
3200
3201 static void add_completion_option(ReadLineState *rs, const char *str,
3202 const char *option)
3203 {
3204 if (!str || !option) {
3205 return;
3206 }
3207 if (!strncmp(option, str, strlen(str))) {
3208 readline_add_completion(rs, option);
3209 }
3210 }
3211
3212 void chardev_add_completion(ReadLineState *rs, int nb_args, const char *str)
3213 {
3214 size_t len;
3215 ChardevBackendInfoList *list, *start;
3216
3217 if (nb_args != 2) {
3218 return;
3219 }
3220 len = strlen(str);
3221 readline_set_completion_index(rs, len);
3222
3223 start = list = qmp_query_chardev_backends(NULL);
3224 while (list) {
3225 const char *chr_name = list->value->name;
3226
3227 if (!strncmp(chr_name, str, len)) {
3228 readline_add_completion(rs, chr_name);
3229 }
3230 list = list->next;
3231 }
3232 qapi_free_ChardevBackendInfoList(start);
3233 }
3234
3235 void netdev_add_completion(ReadLineState *rs, int nb_args, const char *str)
3236 {
3237 size_t len;
3238 int i;
3239
3240 if (nb_args != 2) {
3241 return;
3242 }
3243 len = strlen(str);
3244 readline_set_completion_index(rs, len);
3245 for (i = 0; i < NET_CLIENT_DRIVER__MAX; i++) {
3246 add_completion_option(rs, str, NetClientDriver_str(i));
3247 }
3248 }
3249
3250 void device_add_completion(ReadLineState *rs, int nb_args, const char *str)
3251 {
3252 GSList *list, *elt;
3253 size_t len;
3254
3255 if (nb_args != 2) {
3256 return;
3257 }
3258
3259 len = strlen(str);
3260 readline_set_completion_index(rs, len);
3261 list = elt = object_class_get_list(TYPE_DEVICE, false);
3262 while (elt) {
3263 const char *name;
3264 DeviceClass *dc = OBJECT_CLASS_CHECK(DeviceClass, elt->data,
3265 TYPE_DEVICE);
3266 name = object_class_get_name(OBJECT_CLASS(dc));
3267
3268 if (dc->user_creatable
3269 && !strncmp(name, str, len)) {
3270 readline_add_completion(rs, name);
3271 }
3272 elt = elt->next;
3273 }
3274 g_slist_free(list);
3275 }
3276
3277 void object_add_completion(ReadLineState *rs, int nb_args, const char *str)
3278 {
3279 GSList *list, *elt;
3280 size_t len;
3281
3282 if (nb_args != 2) {
3283 return;
3284 }
3285
3286 len = strlen(str);
3287 readline_set_completion_index(rs, len);
3288 list = elt = object_class_get_list(TYPE_USER_CREATABLE, false);
3289 while (elt) {
3290 const char *name;
3291
3292 name = object_class_get_name(OBJECT_CLASS(elt->data));
3293 if (!strncmp(name, str, len) && strcmp(name, TYPE_USER_CREATABLE)) {
3294 readline_add_completion(rs, name);
3295 }
3296 elt = elt->next;
3297 }
3298 g_slist_free(list);
3299 }
3300
3301 static void peripheral_device_del_completion(ReadLineState *rs,
3302 const char *str, size_t len)
3303 {
3304 Object *peripheral = container_get(qdev_get_machine(), "/peripheral");
3305 GSList *list, *item;
3306
3307 list = qdev_build_hotpluggable_device_list(peripheral);
3308 if (!list) {
3309 return;
3310 }
3311
3312 for (item = list; item; item = g_slist_next(item)) {
3313 DeviceState *dev = item->data;
3314
3315 if (dev->id && !strncmp(str, dev->id, len)) {
3316 readline_add_completion(rs, dev->id);
3317 }
3318 }
3319
3320 g_slist_free(list);
3321 }
3322
3323 void chardev_remove_completion(ReadLineState *rs, int nb_args, const char *str)
3324 {
3325 size_t len;
3326 ChardevInfoList *list, *start;
3327
3328 if (nb_args != 2) {
3329 return;
3330 }
3331 len = strlen(str);
3332 readline_set_completion_index(rs, len);
3333
3334 start = list = qmp_query_chardev(NULL);
3335 while (list) {
3336 ChardevInfo *chr = list->value;
3337
3338 if (!strncmp(chr->label, str, len)) {
3339 readline_add_completion(rs, chr->label);
3340 }
3341 list = list->next;
3342 }
3343 qapi_free_ChardevInfoList(start);
3344 }
3345
3346 static void ringbuf_completion(ReadLineState *rs, const char *str)
3347 {
3348 size_t len;
3349 ChardevInfoList *list, *start;
3350
3351 len = strlen(str);
3352 readline_set_completion_index(rs, len);
3353
3354 start = list = qmp_query_chardev(NULL);
3355 while (list) {
3356 ChardevInfo *chr_info = list->value;
3357
3358 if (!strncmp(chr_info->label, str, len)) {
3359 Chardev *chr = qemu_chr_find(chr_info->label);
3360 if (chr && CHARDEV_IS_RINGBUF(chr)) {
3361 readline_add_completion(rs, chr_info->label);
3362 }
3363 }
3364 list = list->next;
3365 }
3366 qapi_free_ChardevInfoList(start);
3367 }
3368
3369 void ringbuf_write_completion(ReadLineState *rs, int nb_args, const char *str)
3370 {
3371 if (nb_args != 2) {
3372 return;
3373 }
3374 ringbuf_completion(rs, str);
3375 }
3376
3377 void device_del_completion(ReadLineState *rs, int nb_args, const char *str)
3378 {
3379 size_t len;
3380
3381 if (nb_args != 2) {
3382 return;
3383 }
3384
3385 len = strlen(str);
3386 readline_set_completion_index(rs, len);
3387 peripheral_device_del_completion(rs, str, len);
3388 }
3389
3390 void object_del_completion(ReadLineState *rs, int nb_args, const char *str)
3391 {
3392 ObjectPropertyInfoList *list, *start;
3393 size_t len;
3394
3395 if (nb_args != 2) {
3396 return;
3397 }
3398 len = strlen(str);
3399 readline_set_completion_index(rs, len);
3400
3401 start = list = qmp_qom_list("/objects", NULL);
3402 while (list) {
3403 ObjectPropertyInfo *info = list->value;
3404
3405 if (!strncmp(info->type, "child<", 5)
3406 && !strncmp(info->name, str, len)) {
3407 readline_add_completion(rs, info->name);
3408 }
3409 list = list->next;
3410 }
3411 qapi_free_ObjectPropertyInfoList(start);
3412 }
3413
3414 void sendkey_completion(ReadLineState *rs, int nb_args, const char *str)
3415 {
3416 int i;
3417 char *sep;
3418 size_t len;
3419
3420 if (nb_args != 2) {
3421 return;
3422 }
3423 sep = strrchr(str, '-');
3424 if (sep) {
3425 str = sep + 1;
3426 }
3427 len = strlen(str);
3428 readline_set_completion_index(rs, len);
3429 for (i = 0; i < Q_KEY_CODE__MAX; i++) {
3430 if (!strncmp(str, QKeyCode_str(i), len)) {
3431 readline_add_completion(rs, QKeyCode_str(i));
3432 }
3433 }
3434 }
3435
3436 void set_link_completion(ReadLineState *rs, int nb_args, const char *str)
3437 {
3438 size_t len;
3439
3440 len = strlen(str);
3441 readline_set_completion_index(rs, len);
3442 if (nb_args == 2) {
3443 NetClientState *ncs[MAX_QUEUE_NUM];
3444 int count, i;
3445 count = qemu_find_net_clients_except(NULL, ncs,
3446 NET_CLIENT_DRIVER_NONE,
3447 MAX_QUEUE_NUM);
3448 for (i = 0; i < MIN(count, MAX_QUEUE_NUM); i++) {
3449 const char *name = ncs[i]->name;
3450 if (!strncmp(str, name, len)) {
3451 readline_add_completion(rs, name);
3452 }
3453 }
3454 } else if (nb_args == 3) {
3455 add_completion_option(rs, str, "on");
3456 add_completion_option(rs, str, "off");
3457 }
3458 }
3459
3460 void netdev_del_completion(ReadLineState *rs, int nb_args, const char *str)
3461 {
3462 int len, count, i;
3463 NetClientState *ncs[MAX_QUEUE_NUM];
3464
3465 if (nb_args != 2) {
3466 return;
3467 }
3468
3469 len = strlen(str);
3470 readline_set_completion_index(rs, len);
3471 count = qemu_find_net_clients_except(NULL, ncs, NET_CLIENT_DRIVER_NIC,
3472 MAX_QUEUE_NUM);
3473 for (i = 0; i < MIN(count, MAX_QUEUE_NUM); i++) {
3474 QemuOpts *opts;
3475 const char *name = ncs[i]->name;
3476 if (strncmp(str, name, len)) {
3477 continue;
3478 }
3479 opts = qemu_opts_find(qemu_find_opts_err("netdev", NULL), name);
3480 if (opts) {
3481 readline_add_completion(rs, name);
3482 }
3483 }
3484 }
3485
3486 void info_trace_events_completion(ReadLineState *rs, int nb_args, const char *str)
3487 {
3488 size_t len;
3489
3490 len = strlen(str);
3491 readline_set_completion_index(rs, len);
3492 if (nb_args == 2) {
3493 TraceEventIter iter;
3494 TraceEvent *ev;
3495 char *pattern = g_strdup_printf("%s*", str);
3496 trace_event_iter_init(&iter, pattern);
3497 while ((ev = trace_event_iter_next(&iter)) != NULL) {
3498 readline_add_completion(rs, trace_event_get_name(ev));
3499 }
3500 g_free(pattern);
3501 }
3502 }
3503
3504 void trace_event_completion(ReadLineState *rs, int nb_args, const char *str)
3505 {
3506 size_t len;
3507
3508 len = strlen(str);
3509 readline_set_completion_index(rs, len);
3510 if (nb_args == 2) {
3511 TraceEventIter iter;
3512 TraceEvent *ev;
3513 char *pattern = g_strdup_printf("%s*", str);
3514 trace_event_iter_init(&iter, pattern);
3515 while ((ev = trace_event_iter_next(&iter)) != NULL) {
3516 readline_add_completion(rs, trace_event_get_name(ev));
3517 }
3518 g_free(pattern);
3519 } else if (nb_args == 3) {
3520 add_completion_option(rs, str, "on");
3521 add_completion_option(rs, str, "off");
3522 }
3523 }
3524
3525 void watchdog_action_completion(ReadLineState *rs, int nb_args, const char *str)
3526 {
3527 int i;
3528
3529 if (nb_args != 2) {
3530 return;
3531 }
3532 readline_set_completion_index(rs, strlen(str));
3533 for (i = 0; i < WATCHDOG_ACTION__MAX; i++) {
3534 add_completion_option(rs, str, WatchdogAction_str(i));
3535 }
3536 }
3537
3538 void migrate_set_capability_completion(ReadLineState *rs, int nb_args,
3539 const char *str)
3540 {
3541 size_t len;
3542
3543 len = strlen(str);
3544 readline_set_completion_index(rs, len);
3545 if (nb_args == 2) {
3546 int i;
3547 for (i = 0; i < MIGRATION_CAPABILITY__MAX; i++) {
3548 const char *name = MigrationCapability_str(i);
3549 if (!strncmp(str, name, len)) {
3550 readline_add_completion(rs, name);
3551 }
3552 }
3553 } else if (nb_args == 3) {
3554 add_completion_option(rs, str, "on");
3555 add_completion_option(rs, str, "off");
3556 }
3557 }
3558
3559 void migrate_set_parameter_completion(ReadLineState *rs, int nb_args,
3560 const char *str)
3561 {
3562 size_t len;
3563
3564 len = strlen(str);
3565 readline_set_completion_index(rs, len);
3566 if (nb_args == 2) {
3567 int i;
3568 for (i = 0; i < MIGRATION_PARAMETER__MAX; i++) {
3569 const char *name = MigrationParameter_str(i);
3570 if (!strncmp(str, name, len)) {
3571 readline_add_completion(rs, name);
3572 }
3573 }
3574 }
3575 }
3576
3577 void host_net_add_completion(ReadLineState *rs, int nb_args, const char *str)
3578 {
3579 int i;
3580 size_t len;
3581 if (nb_args != 2) {
3582 return;
3583 }
3584 len = strlen(str);
3585 readline_set_completion_index(rs, len);
3586 for (i = 0; host_net_devices[i]; i++) {
3587 if (!strncmp(host_net_devices[i], str, len)) {
3588 readline_add_completion(rs, host_net_devices[i]);
3589 }
3590 }
3591 }
3592
3593 void host_net_remove_completion(ReadLineState *rs, int nb_args, const char *str)
3594 {
3595 NetClientState *ncs[MAX_QUEUE_NUM];
3596 int count, i, len;
3597
3598 len = strlen(str);
3599 readline_set_completion_index(rs, len);
3600 if (nb_args == 2) {
3601 count = qemu_find_net_clients_except(NULL, ncs,
3602 NET_CLIENT_DRIVER_NONE,
3603 MAX_QUEUE_NUM);
3604 for (i = 0; i < MIN(count, MAX_QUEUE_NUM); i++) {
3605 int id;
3606 char name[16];
3607
3608 if (net_hub_id_for_client(ncs[i], &id)) {
3609 continue;
3610 }
3611 snprintf(name, sizeof(name), "%d", id);
3612 if (!strncmp(str, name, len)) {
3613 readline_add_completion(rs, name);
3614 }
3615 }
3616 return;
3617 } else if (nb_args == 3) {
3618 count = qemu_find_net_clients_except(NULL, ncs,
3619 NET_CLIENT_DRIVER_NIC,
3620 MAX_QUEUE_NUM);
3621 for (i = 0; i < MIN(count, MAX_QUEUE_NUM); i++) {
3622 int id;
3623 const char *name;
3624
3625 if (ncs[i]->info->type == NET_CLIENT_DRIVER_HUBPORT ||
3626 net_hub_id_for_client(ncs[i], &id)) {
3627 continue;
3628 }
3629 name = ncs[i]->name;
3630 if (!strncmp(str, name, len)) {
3631 readline_add_completion(rs, name);
3632 }
3633 }
3634 return;
3635 }
3636 }
3637
3638 static void vm_completion(ReadLineState *rs, const char *str)
3639 {
3640 size_t len;
3641 BlockDriverState *bs;
3642 BdrvNextIterator it;
3643
3644 len = strlen(str);
3645 readline_set_completion_index(rs, len);
3646
3647 for (bs = bdrv_first(&it); bs; bs = bdrv_next(&it)) {
3648 SnapshotInfoList *snapshots, *snapshot;
3649 AioContext *ctx = bdrv_get_aio_context(bs);
3650 bool ok = false;
3651
3652 aio_context_acquire(ctx);
3653 if (bdrv_can_snapshot(bs)) {
3654 ok = bdrv_query_snapshot_info_list(bs, &snapshots, NULL) == 0;
3655 }
3656 aio_context_release(ctx);
3657 if (!ok) {
3658 continue;
3659 }
3660
3661 snapshot = snapshots;
3662 while (snapshot) {
3663 char *completion = snapshot->value->name;
3664 if (!strncmp(str, completion, len)) {
3665 readline_add_completion(rs, completion);
3666 }
3667 completion = snapshot->value->id;
3668 if (!strncmp(str, completion, len)) {
3669 readline_add_completion(rs, completion);
3670 }
3671 snapshot = snapshot->next;
3672 }
3673 qapi_free_SnapshotInfoList(snapshots);
3674 }
3675
3676 }
3677
3678 void delvm_completion(ReadLineState *rs, int nb_args, const char *str)
3679 {
3680 if (nb_args == 2) {
3681 vm_completion(rs, str);
3682 }
3683 }
3684
3685 void loadvm_completion(ReadLineState *rs, int nb_args, const char *str)
3686 {
3687 if (nb_args == 2) {
3688 vm_completion(rs, str);
3689 }
3690 }
3691
3692 static void monitor_find_completion_by_table(Monitor *mon,
3693 const mon_cmd_t *cmd_table,
3694 char **args,
3695 int nb_args)
3696 {
3697 const char *cmdname;
3698 int i;
3699 const char *ptype, *old_ptype, *str, *name;
3700 const mon_cmd_t *cmd;
3701 BlockBackend *blk = NULL;
3702
3703 if (nb_args <= 1) {
3704 /* command completion */
3705 if (nb_args == 0)
3706 cmdname = "";
3707 else
3708 cmdname = args[0];
3709 readline_set_completion_index(mon->rs, strlen(cmdname));
3710 for (cmd = cmd_table; cmd->name != NULL; cmd++) {
3711 cmd_completion(mon, cmdname, cmd->name);
3712 }
3713 } else {
3714 /* find the command */
3715 for (cmd = cmd_table; cmd->name != NULL; cmd++) {
3716 if (compare_cmd(args[0], cmd->name)) {
3717 break;
3718 }
3719 }
3720 if (!cmd->name) {
3721 return;
3722 }
3723
3724 if (cmd->sub_table) {
3725 /* do the job again */
3726 monitor_find_completion_by_table(mon, cmd->sub_table,
3727 &args[1], nb_args - 1);
3728 return;
3729 }
3730 if (cmd->command_completion) {
3731 cmd->command_completion(mon->rs, nb_args, args[nb_args - 1]);
3732 return;
3733 }
3734
3735 ptype = next_arg_type(cmd->args_type);
3736 for(i = 0; i < nb_args - 2; i++) {
3737 if (*ptype != '\0') {
3738 ptype = next_arg_type(ptype);
3739 while (*ptype == '?')
3740 ptype = next_arg_type(ptype);
3741 }
3742 }
3743 str = args[nb_args - 1];
3744 old_ptype = NULL;
3745 while (*ptype == '-' && old_ptype != ptype) {
3746 old_ptype = ptype;
3747 ptype = next_arg_type(ptype);
3748 }
3749 switch(*ptype) {
3750 case 'F':
3751 /* file completion */
3752 readline_set_completion_index(mon->rs, strlen(str));
3753 file_completion(mon, str);
3754 break;
3755 case 'B':
3756 /* block device name completion */
3757 readline_set_completion_index(mon->rs, strlen(str));
3758 while ((blk = blk_next(blk)) != NULL) {
3759 name = blk_name(blk);
3760 if (str[0] == '\0' ||
3761 !strncmp(name, str, strlen(str))) {
3762 readline_add_completion(mon->rs, name);
3763 }
3764 }
3765 break;
3766 case 's':
3767 case 'S':
3768 if (!strcmp(cmd->name, "help|?")) {
3769 monitor_find_completion_by_table(mon, cmd_table,
3770 &args[1], nb_args - 1);
3771 }
3772 break;
3773 default:
3774 break;
3775 }
3776 }
3777 }
3778
3779 static void monitor_find_completion(void *opaque,
3780 const char *cmdline)
3781 {
3782 Monitor *mon = opaque;
3783 char *args[MAX_ARGS];
3784 int nb_args, len;
3785
3786 /* 1. parse the cmdline */
3787 if (parse_cmdline(cmdline, &nb_args, args) < 0) {
3788 return;
3789 }
3790
3791 /* if the line ends with a space, it means we want to complete the
3792 next arg */
3793 len = strlen(cmdline);
3794 if (len > 0 && qemu_isspace(cmdline[len - 1])) {
3795 if (nb_args >= MAX_ARGS) {
3796 goto cleanup;
3797 }
3798 args[nb_args++] = g_strdup("");
3799 }
3800
3801 /* 2. auto complete according to args */
3802 monitor_find_completion_by_table(mon, mon->cmd_table, args, nb_args);
3803
3804 cleanup:
3805 free_cmdline_args(args, nb_args);
3806 }
3807
3808 static int monitor_can_read(void *opaque)
3809 {
3810 Monitor *mon = opaque;
3811
3812 return (mon->suspend_cnt == 0) ? 1 : 0;
3813 }
3814
3815 static void handle_qmp_command(JSONMessageParser *parser, GQueue *tokens)
3816 {
3817 QObject *req, *rsp = NULL, *id = NULL;
3818 QDict *qdict = NULL;
3819 Monitor *mon = cur_mon;
3820 Error *err = NULL;
3821
3822 req = json_parser_parse_err(tokens, NULL, &err);
3823 if (!req && !err) {
3824 /* json_parser_parse_err() sucks: can fail without setting @err */
3825 error_setg(&err, QERR_JSON_PARSING);
3826 }
3827 if (err) {
3828 goto err_out;
3829 }
3830
3831 qdict = qobject_to_qdict(req);
3832 if (qdict) {
3833 id = qdict_get(qdict, "id");
3834 qobject_incref(id);
3835 qdict_del(qdict, "id");
3836 } /* else will fail qmp_dispatch() */
3837
3838 if (trace_event_get_state_backends(TRACE_HANDLE_QMP_COMMAND)) {
3839 QString *req_json = qobject_to_json(req);
3840 trace_handle_qmp_command(mon, qstring_get_str(req_json));
3841 QDECREF(req_json);
3842 }
3843
3844 rsp = qmp_dispatch(cur_mon->qmp.commands, req);
3845
3846 if (mon->qmp.commands == &qmp_cap_negotiation_commands) {
3847 qdict = qdict_get_qdict(qobject_to_qdict(rsp), "error");
3848 if (qdict
3849 && !g_strcmp0(qdict_get_try_str(qdict, "class"),
3850 QapiErrorClass_str(ERROR_CLASS_COMMAND_NOT_FOUND))) {
3851 /* Provide a more useful error message */
3852 qdict_del(qdict, "desc");
3853 qdict_put_str(qdict, "desc", "Expecting capabilities negotiation"
3854 " with 'qmp_capabilities'");
3855 }
3856 }
3857
3858 err_out:
3859 if (err) {
3860 qdict = qdict_new();
3861 qdict_put_obj(qdict, "error", qmp_build_error_object(err));
3862 error_free(err);
3863 rsp = QOBJECT(qdict);
3864 }
3865
3866 if (rsp) {
3867 if (id) {
3868 qdict_put_obj(qobject_to_qdict(rsp), "id", id);
3869 id = NULL;
3870 }
3871
3872 monitor_json_emitter(mon, rsp);
3873 }
3874
3875 qobject_decref(id);
3876 qobject_decref(rsp);
3877 qobject_decref(req);
3878 }
3879
3880 static void monitor_qmp_read(void *opaque, const uint8_t *buf, int size)
3881 {
3882 Monitor *old_mon = cur_mon;
3883
3884 cur_mon = opaque;
3885
3886 json_message_parser_feed(&cur_mon->qmp.parser, (const char *) buf, size);
3887
3888 cur_mon = old_mon;
3889 }
3890
3891 static void monitor_read(void *opaque, const uint8_t *buf, int size)
3892 {
3893 Monitor *old_mon = cur_mon;
3894 int i;
3895
3896 cur_mon = opaque;
3897
3898 if (cur_mon->rs) {
3899 for (i = 0; i < size; i++)
3900 readline_handle_byte(cur_mon->rs, buf[i]);
3901 } else {
3902 if (size == 0 || buf[size - 1] != 0)
3903 monitor_printf(cur_mon, "corrupted command\n");
3904 else
3905 handle_hmp_command(cur_mon, (char *)buf);
3906 }
3907
3908 cur_mon = old_mon;
3909 }
3910
3911 static void monitor_command_cb(void *opaque, const char *cmdline,
3912 void *readline_opaque)
3913 {
3914 Monitor *mon = opaque;
3915
3916 monitor_suspend(mon);
3917 handle_hmp_command(mon, cmdline);
3918 monitor_resume(mon);
3919 }
3920
3921 int monitor_suspend(Monitor *mon)
3922 {
3923 if (!mon->rs)
3924 return -ENOTTY;
3925 mon->suspend_cnt++;
3926 return 0;
3927 }
3928
3929 void monitor_resume(Monitor *mon)
3930 {
3931 if (!mon->rs)
3932 return;
3933 if (--mon->suspend_cnt == 0)
3934 readline_show_prompt(mon->rs);
3935 }
3936
3937 static QObject *get_qmp_greeting(void)
3938 {
3939 QObject *ver = NULL;
3940
3941 qmp_marshal_query_version(NULL, &ver, NULL);
3942
3943 return qobject_from_jsonf("{'QMP': {'version': %p, 'capabilities': []}}",
3944 ver);
3945 }
3946
3947 static void monitor_qmp_event(void *opaque, int event)
3948 {
3949 QObject *data;
3950 Monitor *mon = opaque;
3951
3952 switch (event) {
3953 case CHR_EVENT_OPENED:
3954 mon->qmp.commands = &qmp_cap_negotiation_commands;
3955 data = get_qmp_greeting();
3956 monitor_json_emitter(mon, data);
3957 qobject_decref(data);
3958 mon_refcount++;
3959 break;
3960 case CHR_EVENT_CLOSED:
3961 json_message_parser_destroy(&mon->qmp.parser);
3962 json_message_parser_init(&mon->qmp.parser, handle_qmp_command);
3963 mon_refcount--;
3964 monitor_fdsets_cleanup();
3965 break;
3966 }
3967 }
3968
3969 static void monitor_event(void *opaque, int event)
3970 {
3971 Monitor *mon = opaque;
3972
3973 switch (event) {
3974 case CHR_EVENT_MUX_IN:
3975 qemu_mutex_lock(&mon->out_lock);
3976 mon->mux_out = 0;
3977 qemu_mutex_unlock(&mon->out_lock);
3978 if (mon->reset_seen) {
3979 readline_restart(mon->rs);
3980 monitor_resume(mon);
3981 monitor_flush(mon);
3982 } else {
3983 mon->suspend_cnt = 0;
3984 }
3985 break;
3986
3987 case CHR_EVENT_MUX_OUT:
3988 if (mon->reset_seen) {
3989 if (mon->suspend_cnt == 0) {
3990 monitor_printf(mon, "\n");
3991 }
3992 monitor_flush(mon);
3993 monitor_suspend(mon);
3994 } else {
3995 mon->suspend_cnt++;
3996 }
3997 qemu_mutex_lock(&mon->out_lock);
3998 mon->mux_out = 1;
3999 qemu_mutex_unlock(&mon->out_lock);
4000 break;
4001
4002 case CHR_EVENT_OPENED:
4003 monitor_printf(mon, "QEMU %s monitor - type 'help' for more "
4004 "information\n", QEMU_VERSION);
4005 if (!mon->mux_out) {
4006 readline_restart(mon->rs);
4007 readline_show_prompt(mon->rs);
4008 }
4009 mon->reset_seen = 1;
4010 mon_refcount++;
4011 break;
4012
4013 case CHR_EVENT_CLOSED:
4014 mon_refcount--;
4015 monitor_fdsets_cleanup();
4016 break;
4017 }
4018 }
4019
4020 static int
4021 compare_mon_cmd(const void *a, const void *b)
4022 {
4023 return strcmp(((const mon_cmd_t *)a)->name,
4024 ((const mon_cmd_t *)b)->name);
4025 }
4026
4027 static void sortcmdlist(void)
4028 {
4029 int array_num;
4030 int elem_size = sizeof(mon_cmd_t);
4031
4032 array_num = sizeof(mon_cmds)/elem_size-1;
4033 qsort((void *)mon_cmds, array_num, elem_size, compare_mon_cmd);
4034
4035 array_num = sizeof(info_cmds)/elem_size-1;
4036 qsort((void *)info_cmds, array_num, elem_size, compare_mon_cmd);
4037 }
4038
4039 /* These functions just adapt the readline interface in a typesafe way. We
4040 * could cast function pointers but that discards compiler checks.
4041 */
4042 static void GCC_FMT_ATTR(2, 3) monitor_readline_printf(void *opaque,
4043 const char *fmt, ...)
4044 {
4045 va_list ap;
4046 va_start(ap, fmt);
4047 monitor_vprintf(opaque, fmt, ap);
4048 va_end(ap);
4049 }
4050
4051 static void monitor_readline_flush(void *opaque)
4052 {
4053 monitor_flush(opaque);
4054 }
4055
4056 /*
4057 * Print to current monitor if we have one, else to stderr.
4058 * TODO should return int, so callers can calculate width, but that
4059 * requires surgery to monitor_vprintf(). Left for another day.
4060 */
4061 void error_vprintf(const char *fmt, va_list ap)
4062 {
4063 if (cur_mon && !monitor_cur_is_qmp()) {
4064 monitor_vprintf(cur_mon, fmt, ap);
4065 } else {
4066 vfprintf(stderr, fmt, ap);
4067 }
4068 }
4069
4070 void error_vprintf_unless_qmp(const char *fmt, va_list ap)
4071 {
4072 if (cur_mon && !monitor_cur_is_qmp()) {
4073 monitor_vprintf(cur_mon, fmt, ap);
4074 } else if (!cur_mon) {
4075 vfprintf(stderr, fmt, ap);
4076 }
4077 }
4078
4079 static void __attribute__((constructor)) monitor_lock_init(void)
4080 {
4081 qemu_mutex_init(&monitor_lock);
4082 }
4083
4084 void monitor_init(Chardev *chr, int flags)
4085 {
4086 static int is_first_init = 1;
4087 Monitor *mon;
4088
4089 if (is_first_init) {
4090 monitor_qapi_event_init();
4091 sortcmdlist();
4092 is_first_init = 0;
4093 }
4094
4095 mon = g_malloc(sizeof(*mon));
4096 monitor_data_init(mon);
4097
4098 qemu_chr_fe_init(&mon->chr, chr, &error_abort);
4099 mon->flags = flags;
4100 if (flags & MONITOR_USE_READLINE) {
4101 mon->rs = readline_init(monitor_readline_printf,
4102 monitor_readline_flush,
4103 mon,
4104 monitor_find_completion);
4105 monitor_read_command(mon, 0);
4106 }
4107
4108 if (monitor_is_qmp(mon)) {
4109 qemu_chr_fe_set_handlers(&mon->chr, monitor_can_read, monitor_qmp_read,
4110 monitor_qmp_event, NULL, mon, NULL, true);
4111 qemu_chr_fe_set_echo(&mon->chr, true);
4112 json_message_parser_init(&mon->qmp.parser, handle_qmp_command);
4113 } else {
4114 qemu_chr_fe_set_handlers(&mon->chr, monitor_can_read, monitor_read,
4115 monitor_event, NULL, mon, NULL, true);
4116 }
4117
4118 qemu_mutex_lock(&monitor_lock);
4119 QLIST_INSERT_HEAD(&mon_list, mon, entry);
4120 qemu_mutex_unlock(&monitor_lock);
4121 }
4122
4123 void monitor_cleanup(void)
4124 {
4125 Monitor *mon, *next;
4126
4127 qemu_mutex_lock(&monitor_lock);
4128 QLIST_FOREACH_SAFE(mon, &mon_list, entry, next) {
4129 QLIST_REMOVE(mon, entry);
4130 monitor_data_destroy(mon);
4131 g_free(mon);
4132 }
4133 qemu_mutex_unlock(&monitor_lock);
4134 }
4135
4136 QemuOptsList qemu_mon_opts = {
4137 .name = "mon",
4138 .implied_opt_name = "chardev",
4139 .head = QTAILQ_HEAD_INITIALIZER(qemu_mon_opts.head),
4140 .desc = {
4141 {
4142 .name = "mode",
4143 .type = QEMU_OPT_STRING,
4144 },{
4145 .name = "chardev",
4146 .type = QEMU_OPT_STRING,
4147 },{
4148 .name = "pretty",
4149 .type = QEMU_OPT_BOOL,
4150 },
4151 { /* end of list */ }
4152 },
4153 };
4154
4155 #ifndef TARGET_I386
4156 void qmp_rtc_reset_reinjection(Error **errp)
4157 {
4158 error_setg(errp, QERR_FEATURE_DISABLED, "rtc-reset-reinjection");
4159 }
4160 #endif
4161
4162 #ifndef TARGET_S390X
4163 void qmp_dump_skeys(const char *filename, Error **errp)
4164 {
4165 error_setg(errp, QERR_FEATURE_DISABLED, "dump-skeys");
4166 }
4167 #endif
4168
4169 #ifndef TARGET_ARM
4170 GICCapabilityList *qmp_query_gic_capabilities(Error **errp)
4171 {
4172 error_setg(errp, QERR_FEATURE_DISABLED, "query-gic-capabilities");
4173 return NULL;
4174 }
4175 #endif
4176
4177 HotpluggableCPUList *qmp_query_hotpluggable_cpus(Error **errp)
4178 {
4179 MachineState *ms = MACHINE(qdev_get_machine());
4180 MachineClass *mc = MACHINE_GET_CLASS(ms);
4181
4182 if (!mc->has_hotpluggable_cpus) {
4183 error_setg(errp, QERR_FEATURE_DISABLED, "query-hotpluggable-cpus");
4184 return NULL;
4185 }
4186
4187 return machine_query_hotpluggable_cpus(ms);
4188 }
AR7 emulation for QEMU