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block: Use qemu_enum_parse() in blkdebug_debug_breakpoint()
[qemu/armbru.git] / monitor.c
blob135ec2de8ff097ee8b3b110a99b68ae6ad163418
1 /*
2 * QEMU monitor
3 *
4 * Copyright (c) 2003-2004 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24 #include "qemu/osdep.h"
25 #include <dirent.h>
26 #include "qemu-common.h"
27 #include "cpu.h"
28 #include "hw/hw.h"
29 #include "monitor/qdev.h"
30 #include "hw/usb.h"
31 #include "hw/i386/pc.h"
32 #include "hw/pci/pci.h"
33 #include "sysemu/watchdog.h"
34 #include "hw/loader.h"
35 #include "exec/gdbstub.h"
36 #include "net/net.h"
37 #include "net/slirp.h"
38 #include "chardev/char-fe.h"
39 #include "ui/qemu-spice.h"
40 #include "sysemu/numa.h"
41 #include "monitor/monitor.h"
42 #include "qemu/config-file.h"
43 #include "qemu/readline.h"
44 #include "ui/console.h"
45 #include "ui/input.h"
46 #include "sysemu/blockdev.h"
47 #include "sysemu/block-backend.h"
48 #include "audio/audio.h"
49 #include "disas/disas.h"
50 #include "sysemu/balloon.h"
51 #include "qemu/timer.h"
52 #include "sysemu/hw_accel.h"
53 #include "qemu/acl.h"
54 #include "sysemu/tpm.h"
55 #include "qapi/qmp/qerror.h"
56 #include "qapi/qmp/types.h"
57 #include "qapi/qmp/qjson.h"
58 #include "qapi/qmp/json-streamer.h"
59 #include "qapi/qmp/json-parser.h"
60 #include "qom/object_interfaces.h"
61 #include "trace-root.h"
62 #include "trace/control.h"
63 #include "monitor/hmp-target.h"
64 #ifdef CONFIG_TRACE_SIMPLE
65 #include "trace/simple.h"
66 #endif
67 #include "exec/memory.h"
68 #include "exec/exec-all.h"
69 #include "qemu/log.h"
70 #include "qmp-commands.h"
71 #include "hmp.h"
72 #include "qemu/thread.h"
73 #include "block/qapi.h"
74 #include "qapi/qmp-event.h"
75 #include "qapi-event.h"
76 #include "qmp-introspect.h"
77 #include "sysemu/qtest.h"
78 #include "sysemu/cpus.h"
79 #include "qemu/cutils.h"
80 #include "qapi/qmp/dispatch.h"
81
82 #if defined(TARGET_S390X)
83 #include "hw/s390x/storage-keys.h"
84 #include "hw/s390x/storage-attributes.h"
85 #endif
86
87 /*
88 * Supported types:
89 *
90 * 'F' filename
91 * 'B' block device name
92 * 's' string (accept optional quote)
93 * 'S' it just appends the rest of the string (accept optional quote)
94 * 'O' option string of the form NAME=VALUE,...
95 * parsed according to QemuOptsList given by its name
96 * Example: 'device:O' uses qemu_device_opts.
97 * Restriction: only lists with empty desc are supported
98 * TODO lift the restriction
99 * 'i' 32 bit integer
100 * 'l' target long (32 or 64 bit)
101 * 'M' Non-negative target long (32 or 64 bit), in user mode the
102 * value is multiplied by 2^20 (think Mebibyte)
103 * 'o' octets (aka bytes)
104 * user mode accepts an optional E, e, P, p, T, t, G, g, M, m,
105 * K, k suffix, which multiplies the value by 2^60 for suffixes E
106 * and e, 2^50 for suffixes P and p, 2^40 for suffixes T and t,
107 * 2^30 for suffixes G and g, 2^20 for M and m, 2^10 for K and k
108 * 'T' double
109 * user mode accepts an optional ms, us, ns suffix,
110 * which divides the value by 1e3, 1e6, 1e9, respectively
111 * '/' optional gdb-like print format (like "/10x")
112 *
113 * '?' optional type (for all types, except '/')
114 * '.' other form of optional type (for 'i' and 'l')
115 * 'b' boolean
116 * user mode accepts "on" or "off"
117 * '-' optional parameter (eg. '-f')
118 *
119 */
120
121 typedef struct mon_cmd_t {
122 const char *name;
123 const char *args_type;
124 const char *params;
125 const char *help;
126 void (*cmd)(Monitor *mon, const QDict *qdict);
127 /* @sub_table is a list of 2nd level of commands. If it does not exist,
128 * cmd should be used. If it exists, sub_table[?].cmd should be
129 * used, and cmd of 1st level plays the role of help function.
130 */
131 struct mon_cmd_t *sub_table;
132 void (*command_completion)(ReadLineState *rs, int nb_args, const char *str);
133 } mon_cmd_t;
134
135 /* file descriptors passed via SCM_RIGHTS */
136 typedef struct mon_fd_t mon_fd_t;
137 struct mon_fd_t {
138 char *name;
139 int fd;
140 QLIST_ENTRY(mon_fd_t) next;
141 };
142
143 /* file descriptor associated with a file descriptor set */
144 typedef struct MonFdsetFd MonFdsetFd;
145 struct MonFdsetFd {
146 int fd;
147 bool removed;
148 char *opaque;
149 QLIST_ENTRY(MonFdsetFd) next;
150 };
151
152 /* file descriptor set containing fds passed via SCM_RIGHTS */
153 typedef struct MonFdset MonFdset;
154 struct MonFdset {
155 int64_t id;
156 QLIST_HEAD(, MonFdsetFd) fds;
157 QLIST_HEAD(, MonFdsetFd) dup_fds;
158 QLIST_ENTRY(MonFdset) next;
159 };
160
161 typedef struct {
162 JSONMessageParser parser;
163 /*
164 * When a client connects, we're in capabilities negotiation mode.
165 * When command qmp_capabilities succeeds, we go into command
166 * mode.
167 */
168 QmpCommandList *commands;
169 } MonitorQMP;
170
171 /*
172 * To prevent flooding clients, events can be throttled. The
173 * throttling is calculated globally, rather than per-Monitor
174 * instance.
175 */
176 typedef struct MonitorQAPIEventState {
177 QAPIEvent event; /* Throttling state for this event type and... */
178 QDict *data; /* ... data, see qapi_event_throttle_equal() */
179 QEMUTimer *timer; /* Timer for handling delayed events */
180 QDict *qdict; /* Delayed event (if any) */
181 } MonitorQAPIEventState;
182
183 typedef struct {
184 int64_t rate; /* Minimum time (in ns) between two events */
185 } MonitorQAPIEventConf;
186
187 struct Monitor {
188 CharBackend chr;
189 int reset_seen;
190 int flags;
191 int suspend_cnt;
192 bool skip_flush;
193
194 QemuMutex out_lock;
195 QString *outbuf;
196 guint out_watch;
197
198 /* Read under either BQL or out_lock, written with BQL+out_lock. */
199 int mux_out;
200
201 ReadLineState *rs;
202 MonitorQMP qmp;
203 CPUState *mon_cpu;
204 BlockCompletionFunc *password_completion_cb;
205 void *password_opaque;
206 mon_cmd_t *cmd_table;
207 QLIST_HEAD(,mon_fd_t) fds;
208 QLIST_ENTRY(Monitor) entry;
209 };
210
211 /* QMP checker flags */
212 #define QMP_ACCEPT_UNKNOWNS 1
213
214 /* Protects mon_list, monitor_event_state. */
215 static QemuMutex monitor_lock;
216
217 static QLIST_HEAD(mon_list, Monitor) mon_list;
218 static QLIST_HEAD(mon_fdsets, MonFdset) mon_fdsets;
219 static int mon_refcount;
220
221 static mon_cmd_t mon_cmds[];
222 static mon_cmd_t info_cmds[];
223
224 QmpCommandList qmp_commands, qmp_cap_negotiation_commands;
225
226 Monitor *cur_mon;
227
228 static QEMUClockType event_clock_type = QEMU_CLOCK_REALTIME;
229
230 static void monitor_command_cb(void *opaque, const char *cmdline,
231 void *readline_opaque);
232
233 /**
234 * Is @mon a QMP monitor?
235 */
236 static inline bool monitor_is_qmp(const Monitor *mon)
237 {
238 return (mon->flags & MONITOR_USE_CONTROL);
239 }
240
241 /**
242 * Is the current monitor, if any, a QMP monitor?
243 */
244 bool monitor_cur_is_qmp(void)
245 {
246 return cur_mon && monitor_is_qmp(cur_mon);
247 }
248
249 void monitor_read_command(Monitor *mon, int show_prompt)
250 {
251 if (!mon->rs)
252 return;
253
254 readline_start(mon->rs, "(qemu) ", 0, monitor_command_cb, NULL);
255 if (show_prompt)
256 readline_show_prompt(mon->rs);
257 }
258
259 int monitor_read_password(Monitor *mon, ReadLineFunc *readline_func,
260 void *opaque)
261 {
262 if (mon->rs) {
263 readline_start(mon->rs, "Password: ", 1, readline_func, opaque);
264 /* prompt is printed on return from the command handler */
265 return 0;
266 } else {
267 monitor_printf(mon, "terminal does not support password prompting\n");
268 return -ENOTTY;
269 }
270 }
271
272 static void monitor_flush_locked(Monitor *mon);
273
274 static gboolean monitor_unblocked(GIOChannel *chan, GIOCondition cond,
275 void *opaque)
276 {
277 Monitor *mon = opaque;
278
279 qemu_mutex_lock(&mon->out_lock);
280 mon->out_watch = 0;
281 monitor_flush_locked(mon);
282 qemu_mutex_unlock(&mon->out_lock);
283 return FALSE;
284 }
285
286 /* Called with mon->out_lock held. */
287 static void monitor_flush_locked(Monitor *mon)
288 {
289 int rc;
290 size_t len;
291 const char *buf;
292
293 if (mon->skip_flush) {
294 return;
295 }
296
297 buf = qstring_get_str(mon->outbuf);
298 len = qstring_get_length(mon->outbuf);
299
300 if (len && !mon->mux_out) {
301 rc = qemu_chr_fe_write(&mon->chr, (const uint8_t *) buf, len);
302 if ((rc < 0 && errno != EAGAIN) || (rc == len)) {
303 /* all flushed or error */
304 QDECREF(mon->outbuf);
305 mon->outbuf = qstring_new();
306 return;
307 }
308 if (rc > 0) {
309 /* partial write */
310 QString *tmp = qstring_from_str(buf + rc);
311 QDECREF(mon->outbuf);
312 mon->outbuf = tmp;
313 }
314 if (mon->out_watch == 0) {
315 mon->out_watch =
316 qemu_chr_fe_add_watch(&mon->chr, G_IO_OUT | G_IO_HUP,
317 monitor_unblocked, mon);
318 }
319 }
320 }
321
322 void monitor_flush(Monitor *mon)
323 {
324 qemu_mutex_lock(&mon->out_lock);
325 monitor_flush_locked(mon);
326 qemu_mutex_unlock(&mon->out_lock);
327 }
328
329 /* flush at every end of line */
330 static void monitor_puts(Monitor *mon, const char *str)
331 {
332 char c;
333
334 qemu_mutex_lock(&mon->out_lock);
335 for(;;) {
336 c = *str++;
337 if (c == '\0')
338 break;
339 if (c == '\n') {
340 qstring_append_chr(mon->outbuf, '\r');
341 }
342 qstring_append_chr(mon->outbuf, c);
343 if (c == '\n') {
344 monitor_flush_locked(mon);
345 }
346 }
347 qemu_mutex_unlock(&mon->out_lock);
348 }
349
350 void monitor_vprintf(Monitor *mon, const char *fmt, va_list ap)
351 {
352 char *buf;
353
354 if (!mon)
355 return;
356
357 if (monitor_is_qmp(mon)) {
358 return;
359 }
360
361 buf = g_strdup_vprintf(fmt, ap);
362 monitor_puts(mon, buf);
363 g_free(buf);
364 }
365
366 void monitor_printf(Monitor *mon, const char *fmt, ...)
367 {
368 va_list ap;
369 va_start(ap, fmt);
370 monitor_vprintf(mon, fmt, ap);
371 va_end(ap);
372 }
373
374 int monitor_fprintf(FILE *stream, const char *fmt, ...)
375 {
376 va_list ap;
377 va_start(ap, fmt);
378 monitor_vprintf((Monitor *)stream, fmt, ap);
379 va_end(ap);
380 return 0;
381 }
382
383 static void monitor_json_emitter(Monitor *mon, const QObject *data)
384 {
385 QString *json;
386
387 json = mon->flags & MONITOR_USE_PRETTY ? qobject_to_json_pretty(data) :
388 qobject_to_json(data);
389 assert(json != NULL);
390
391 qstring_append_chr(json, '\n');
392 monitor_puts(mon, qstring_get_str(json));
393
394 QDECREF(json);
395 }
396
397 static MonitorQAPIEventConf monitor_qapi_event_conf[QAPI_EVENT__MAX] = {
398 /* Limit guest-triggerable events to 1 per second */
399 [QAPI_EVENT_RTC_CHANGE] = { 1000 * SCALE_MS },
400 [QAPI_EVENT_WATCHDOG] = { 1000 * SCALE_MS },
401 [QAPI_EVENT_BALLOON_CHANGE] = { 1000 * SCALE_MS },
402 [QAPI_EVENT_QUORUM_REPORT_BAD] = { 1000 * SCALE_MS },
403 [QAPI_EVENT_QUORUM_FAILURE] = { 1000 * SCALE_MS },
404 [QAPI_EVENT_VSERPORT_CHANGE] = { 1000 * SCALE_MS },
405 };
406
407 GHashTable *monitor_qapi_event_state;
408
409 /*
410 * Emits the event to every monitor instance, @event is only used for trace
411 * Called with monitor_lock held.
412 */
413 static void monitor_qapi_event_emit(QAPIEvent event, QDict *qdict)
414 {
415 Monitor *mon;
416
417 trace_monitor_protocol_event_emit(event, qdict);
418 QLIST_FOREACH(mon, &mon_list, entry) {
419 if (monitor_is_qmp(mon)
420 && mon->qmp.commands != &qmp_cap_negotiation_commands) {
421 monitor_json_emitter(mon, QOBJECT(qdict));
422 }
423 }
424 }
425
426 static void monitor_qapi_event_handler(void *opaque);
427
428 /*
429 * Queue a new event for emission to Monitor instances,
430 * applying any rate limiting if required.
431 */
432 static void
433 monitor_qapi_event_queue(QAPIEvent event, QDict *qdict, Error **errp)
434 {
435 MonitorQAPIEventConf *evconf;
436 MonitorQAPIEventState *evstate;
437
438 assert(event < QAPI_EVENT__MAX);
439 evconf = &monitor_qapi_event_conf[event];
440 trace_monitor_protocol_event_queue(event, qdict, evconf->rate);
441
442 qemu_mutex_lock(&monitor_lock);
443
444 if (!evconf->rate) {
445 /* Unthrottled event */
446 monitor_qapi_event_emit(event, qdict);
447 } else {
448 QDict *data = qobject_to_qdict(qdict_get(qdict, "data"));
449 MonitorQAPIEventState key = { .event = event, .data = data };
450
451 evstate = g_hash_table_lookup(monitor_qapi_event_state, &key);
452 assert(!evstate || timer_pending(evstate->timer));
453
454 if (evstate) {
455 /*
456 * Timer is pending for (at least) evconf->rate ns after
457 * last send. Store event for sending when timer fires,
458 * replacing a prior stored event if any.
459 */
460 QDECREF(evstate->qdict);
461 evstate->qdict = qdict;
462 QINCREF(evstate->qdict);
463 } else {
464 /*
465 * Last send was (at least) evconf->rate ns ago.
466 * Send immediately, and arm the timer to call
467 * monitor_qapi_event_handler() in evconf->rate ns. Any
468 * events arriving before then will be delayed until then.
469 */
470 int64_t now = qemu_clock_get_ns(event_clock_type);
471
472 monitor_qapi_event_emit(event, qdict);
473
474 evstate = g_new(MonitorQAPIEventState, 1);
475 evstate->event = event;
476 evstate->data = data;
477 QINCREF(evstate->data);
478 evstate->qdict = NULL;
479 evstate->timer = timer_new_ns(event_clock_type,
480 monitor_qapi_event_handler,
481 evstate);
482 g_hash_table_add(monitor_qapi_event_state, evstate);
483 timer_mod_ns(evstate->timer, now + evconf->rate);
484 }
485 }
486
487 qemu_mutex_unlock(&monitor_lock);
488 }
489
490 /*
491 * This function runs evconf->rate ns after sending a throttled
492 * event.
493 * If another event has since been stored, send it.
494 */
495 static void monitor_qapi_event_handler(void *opaque)
496 {
497 MonitorQAPIEventState *evstate = opaque;
498 MonitorQAPIEventConf *evconf = &monitor_qapi_event_conf[evstate->event];
499
500 trace_monitor_protocol_event_handler(evstate->event, evstate->qdict);
501 qemu_mutex_lock(&monitor_lock);
502
503 if (evstate->qdict) {
504 int64_t now = qemu_clock_get_ns(event_clock_type);
505
506 monitor_qapi_event_emit(evstate->event, evstate->qdict);
507 QDECREF(evstate->qdict);
508 evstate->qdict = NULL;
509 timer_mod_ns(evstate->timer, now + evconf->rate);
510 } else {
511 g_hash_table_remove(monitor_qapi_event_state, evstate);
512 QDECREF(evstate->data);
513 timer_free(evstate->timer);
514 g_free(evstate);
515 }
516
517 qemu_mutex_unlock(&monitor_lock);
518 }
519
520 static unsigned int qapi_event_throttle_hash(const void *key)
521 {
522 const MonitorQAPIEventState *evstate = key;
523 unsigned int hash = evstate->event * 255;
524
525 if (evstate->event == QAPI_EVENT_VSERPORT_CHANGE) {
526 hash += g_str_hash(qdict_get_str(evstate->data, "id"));
527 }
528
529 if (evstate->event == QAPI_EVENT_QUORUM_REPORT_BAD) {
530 hash += g_str_hash(qdict_get_str(evstate->data, "node-name"));
531 }
532
533 return hash;
534 }
535
536 static gboolean qapi_event_throttle_equal(const void *a, const void *b)
537 {
538 const MonitorQAPIEventState *eva = a;
539 const MonitorQAPIEventState *evb = b;
540
541 if (eva->event != evb->event) {
542 return FALSE;
543 }
544
545 if (eva->event == QAPI_EVENT_VSERPORT_CHANGE) {
546 return !strcmp(qdict_get_str(eva->data, "id"),
547 qdict_get_str(evb->data, "id"));
548 }
549
550 if (eva->event == QAPI_EVENT_QUORUM_REPORT_BAD) {
551 return !strcmp(qdict_get_str(eva->data, "node-name"),
552 qdict_get_str(evb->data, "node-name"));
553 }
554
555 return TRUE;
556 }
557
558 static void monitor_qapi_event_init(void)
559 {
560 if (qtest_enabled()) {
561 event_clock_type = QEMU_CLOCK_VIRTUAL;
562 }
563
564 monitor_qapi_event_state = g_hash_table_new(qapi_event_throttle_hash,
565 qapi_event_throttle_equal);
566 qmp_event_set_func_emit(monitor_qapi_event_queue);
567 }
568
569 static void handle_hmp_command(Monitor *mon, const char *cmdline);
570
571 static void monitor_data_init(Monitor *mon)
572 {
573 memset(mon, 0, sizeof(Monitor));
574 qemu_mutex_init(&mon->out_lock);
575 mon->outbuf = qstring_new();
576 /* Use *mon_cmds by default. */
577 mon->cmd_table = mon_cmds;
578 }
579
580 static void monitor_data_destroy(Monitor *mon)
581 {
582 qemu_chr_fe_deinit(&mon->chr, false);
583 if (monitor_is_qmp(mon)) {
584 json_message_parser_destroy(&mon->qmp.parser);
585 }
586 g_free(mon->rs);
587 QDECREF(mon->outbuf);
588 qemu_mutex_destroy(&mon->out_lock);
589 }
590
591 char *qmp_human_monitor_command(const char *command_line, bool has_cpu_index,
592 int64_t cpu_index, Error **errp)
593 {
594 char *output = NULL;
595 Monitor *old_mon, hmp;
596
597 monitor_data_init(&hmp);
598 hmp.skip_flush = true;
599
600 old_mon = cur_mon;
601 cur_mon = &hmp;
602
603 if (has_cpu_index) {
604 int ret = monitor_set_cpu(cpu_index);
605 if (ret < 0) {
606 cur_mon = old_mon;
607 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "cpu-index",
608 "a CPU number");
609 goto out;
610 }
611 }
612
613 handle_hmp_command(&hmp, command_line);
614 cur_mon = old_mon;
615
616 qemu_mutex_lock(&hmp.out_lock);
617 if (qstring_get_length(hmp.outbuf) > 0) {
618 output = g_strdup(qstring_get_str(hmp.outbuf));
619 } else {
620 output = g_strdup("");
621 }
622 qemu_mutex_unlock(&hmp.out_lock);
623
624 out:
625 monitor_data_destroy(&hmp);
626 return output;
627 }
628
629 static int compare_cmd(const char *name, const char *list)
630 {
631 const char *p, *pstart;
632 int len;
633 len = strlen(name);
634 p = list;
635 for(;;) {
636 pstart = p;
637 p = strchr(p, '|');
638 if (!p)
639 p = pstart + strlen(pstart);
640 if ((p - pstart) == len && !memcmp(pstart, name, len))
641 return 1;
642 if (*p == '\0')
643 break;
644 p++;
645 }
646 return 0;
647 }
648
649 static int get_str(char *buf, int buf_size, const char **pp)
650 {
651 const char *p;
652 char *q;
653 int c;
654
655 q = buf;
656 p = *pp;
657 while (qemu_isspace(*p)) {
658 p++;
659 }
660 if (*p == '\0') {
661 fail:
662 *q = '\0';
663 *pp = p;
664 return -1;
665 }
666 if (*p == '\"') {
667 p++;
668 while (*p != '\0' && *p != '\"') {
669 if (*p == '\\') {
670 p++;
671 c = *p++;
672 switch (c) {
673 case 'n':
674 c = '\n';
675 break;
676 case 'r':
677 c = '\r';
678 break;
679 case '\\':
680 case '\'':
681 case '\"':
682 break;
683 default:
684 printf("unsupported escape code: '\\%c'\n", c);
685 goto fail;
686 }
687 if ((q - buf) < buf_size - 1) {
688 *q++ = c;
689 }
690 } else {
691 if ((q - buf) < buf_size - 1) {
692 *q++ = *p;
693 }
694 p++;
695 }
696 }
697 if (*p != '\"') {
698 printf("unterminated string\n");
699 goto fail;
700 }
701 p++;
702 } else {
703 while (*p != '\0' && !qemu_isspace(*p)) {
704 if ((q - buf) < buf_size - 1) {
705 *q++ = *p;
706 }
707 p++;
708 }
709 }
710 *q = '\0';
711 *pp = p;
712 return 0;
713 }
714
715 #define MAX_ARGS 16
716
717 static void free_cmdline_args(char **args, int nb_args)
718 {
719 int i;
720
721 assert(nb_args <= MAX_ARGS);
722
723 for (i = 0; i < nb_args; i++) {
724 g_free(args[i]);
725 }
726
727 }
728
729 /*
730 * Parse the command line to get valid args.
731 * @cmdline: command line to be parsed.
732 * @pnb_args: location to store the number of args, must NOT be NULL.
733 * @args: location to store the args, which should be freed by caller, must
734 * NOT be NULL.
735 *
736 * Returns 0 on success, negative on failure.
737 *
738 * NOTE: this parser is an approximate form of the real command parser. Number
739 * of args have a limit of MAX_ARGS. If cmdline contains more, it will
740 * return with failure.
741 */
742 static int parse_cmdline(const char *cmdline,
743 int *pnb_args, char **args)
744 {
745 const char *p;
746 int nb_args, ret;
747 char buf[1024];
748
749 p = cmdline;
750 nb_args = 0;
751 for (;;) {
752 while (qemu_isspace(*p)) {
753 p++;
754 }
755 if (*p == '\0') {
756 break;
757 }
758 if (nb_args >= MAX_ARGS) {
759 goto fail;
760 }
761 ret = get_str(buf, sizeof(buf), &p);
762 if (ret < 0) {
763 goto fail;
764 }
765 args[nb_args] = g_strdup(buf);
766 nb_args++;
767 }
768 *pnb_args = nb_args;
769 return 0;
770
771 fail:
772 free_cmdline_args(args, nb_args);
773 return -1;
774 }
775
776 static void help_cmd_dump_one(Monitor *mon,
777 const mon_cmd_t *cmd,
778 char **prefix_args,
779 int prefix_args_nb)
780 {
781 int i;
782
783 for (i = 0; i < prefix_args_nb; i++) {
784 monitor_printf(mon, "%s ", prefix_args[i]);
785 }
786 monitor_printf(mon, "%s %s -- %s\n", cmd->name, cmd->params, cmd->help);
787 }
788
789 /* @args[@arg_index] is the valid command need to find in @cmds */
790 static void help_cmd_dump(Monitor *mon, const mon_cmd_t *cmds,
791 char **args, int nb_args, int arg_index)
792 {
793 const mon_cmd_t *cmd;
794
795 /* No valid arg need to compare with, dump all in *cmds */
796 if (arg_index >= nb_args) {
797 for (cmd = cmds; cmd->name != NULL; cmd++) {
798 help_cmd_dump_one(mon, cmd, args, arg_index);
799 }
800 return;
801 }
802
803 /* Find one entry to dump */
804 for (cmd = cmds; cmd->name != NULL; cmd++) {
805 if (compare_cmd(args[arg_index], cmd->name)) {
806 if (cmd->sub_table) {
807 /* continue with next arg */
808 help_cmd_dump(mon, cmd->sub_table,
809 args, nb_args, arg_index + 1);
810 } else {
811 help_cmd_dump_one(mon, cmd, args, arg_index);
812 }
813 break;
814 }
815 }
816 }
817
818 static void help_cmd(Monitor *mon, const char *name)
819 {
820 char *args[MAX_ARGS];
821 int nb_args = 0;
822
823 /* 1. parse user input */
824 if (name) {
825 /* special case for log, directly dump and return */
826 if (!strcmp(name, "log")) {
827 const QEMULogItem *item;
828 monitor_printf(mon, "Log items (comma separated):\n");
829 monitor_printf(mon, "%-10s %s\n", "none", "remove all logs");
830 for (item = qemu_log_items; item->mask != 0; item++) {
831 monitor_printf(mon, "%-10s %s\n", item->name, item->help);
832 }
833 return;
834 }
835
836 if (parse_cmdline(name, &nb_args, args) < 0) {
837 return;
838 }
839 }
840
841 /* 2. dump the contents according to parsed args */
842 help_cmd_dump(mon, mon->cmd_table, args, nb_args, 0);
843
844 free_cmdline_args(args, nb_args);
845 }
846
847 static void do_help_cmd(Monitor *mon, const QDict *qdict)
848 {
849 help_cmd(mon, qdict_get_try_str(qdict, "name"));
850 }
851
852 static void hmp_trace_event(Monitor *mon, const QDict *qdict)
853 {
854 const char *tp_name = qdict_get_str(qdict, "name");
855 bool new_state = qdict_get_bool(qdict, "option");
856 bool has_vcpu = qdict_haskey(qdict, "vcpu");
857 int vcpu = qdict_get_try_int(qdict, "vcpu", 0);
858 Error *local_err = NULL;
859
860 if (vcpu < 0) {
861 monitor_printf(mon, "argument vcpu must be positive");
862 return;
863 }
864
865 qmp_trace_event_set_state(tp_name, new_state, true, true, has_vcpu, vcpu, &local_err);
866 if (local_err) {
867 error_report_err(local_err);
868 }
869 }
870
871 #ifdef CONFIG_TRACE_SIMPLE
872 static void hmp_trace_file(Monitor *mon, const QDict *qdict)
873 {
874 const char *op = qdict_get_try_str(qdict, "op");
875 const char *arg = qdict_get_try_str(qdict, "arg");
876
877 if (!op) {
878 st_print_trace_file_status((FILE *)mon, &monitor_fprintf);
879 } else if (!strcmp(op, "on")) {
880 st_set_trace_file_enabled(true);
881 } else if (!strcmp(op, "off")) {
882 st_set_trace_file_enabled(false);
883 } else if (!strcmp(op, "flush")) {
884 st_flush_trace_buffer();
885 } else if (!strcmp(op, "set")) {
886 if (arg) {
887 st_set_trace_file(arg);
888 }
889 } else {
890 monitor_printf(mon, "unexpected argument \"%s\"\n", op);
891 help_cmd(mon, "trace-file");
892 }
893 }
894 #endif
895
896 static void hmp_info_help(Monitor *mon, const QDict *qdict)
897 {
898 help_cmd(mon, "info");
899 }
900
901 static void query_commands_cb(QmpCommand *cmd, void *opaque)
902 {
903 CommandInfoList *info, **list = opaque;
904
905 if (!cmd->enabled) {
906 return;
907 }
908
909 info = g_malloc0(sizeof(*info));
910 info->value = g_malloc0(sizeof(*info->value));
911 info->value->name = g_strdup(cmd->name);
912 info->next = *list;
913 *list = info;
914 }
915
916 CommandInfoList *qmp_query_commands(Error **errp)
917 {
918 CommandInfoList *list = NULL;
919
920 qmp_for_each_command(cur_mon->qmp.commands, query_commands_cb, &list);
921
922 return list;
923 }
924
925 EventInfoList *qmp_query_events(Error **errp)
926 {
927 EventInfoList *info, *ev_list = NULL;
928 QAPIEvent e;
929
930 for (e = 0 ; e < QAPI_EVENT__MAX ; e++) {
931 const char *event_name = QAPIEvent_lookup[e];
932 assert(event_name != NULL);
933 info = g_malloc0(sizeof(*info));
934 info->value = g_malloc0(sizeof(*info->value));
935 info->value->name = g_strdup(event_name);
936
937 info->next = ev_list;
938 ev_list = info;
939 }
940
941 return ev_list;
942 }
943
944 /*
945 * Minor hack: generated marshalling suppressed for this command
946 * ('gen': false in the schema) so we can parse the JSON string
947 * directly into QObject instead of first parsing it with
948 * visit_type_SchemaInfoList() into a SchemaInfoList, then marshal it
949 * to QObject with generated output marshallers, every time. Instead,
950 * we do it in test-qobject-input-visitor.c, just to make sure
951 * qapi-introspect.py's output actually conforms to the schema.
952 */
953 static void qmp_query_qmp_schema(QDict *qdict, QObject **ret_data,
954 Error **errp)
955 {
956 *ret_data = qobject_from_json(qmp_schema_json, &error_abort);
957 }
958
959 /*
960 * We used to define commands in qmp-commands.hx in addition to the
961 * QAPI schema. This permitted defining some of them only in certain
962 * configurations. query-commands has always reflected that (good,
963 * because it lets QMP clients figure out what's actually available),
964 * while query-qmp-schema never did (not so good). This function is a
965 * hack to keep the configuration-specific commands defined exactly as
966 * before, even though qmp-commands.hx is gone.
967 *
968 * FIXME Educate the QAPI schema on configuration-specific commands,
969 * and drop this hack.
970 */
971 static void qmp_unregister_commands_hack(void)
972 {
973 #ifndef CONFIG_SPICE
974 qmp_unregister_command(&qmp_commands, "query-spice");
975 #endif
976 #ifndef CONFIG_REPLICATION
977 qmp_unregister_command(&qmp_commands, "xen-set-replication");
978 qmp_unregister_command(&qmp_commands, "query-xen-replication-status");
979 qmp_unregister_command(&qmp_commands, "xen-colo-do-checkpoint");
980 #endif
981 #ifndef TARGET_I386
982 qmp_unregister_command(&qmp_commands, "rtc-reset-reinjection");
983 #endif
984 #ifndef TARGET_S390X
985 qmp_unregister_command(&qmp_commands, "dump-skeys");
986 #endif
987 #ifndef TARGET_ARM
988 qmp_unregister_command(&qmp_commands, "query-gic-capabilities");
989 #endif
990 #if !defined(TARGET_S390X) && !defined(TARGET_I386)
991 qmp_unregister_command(&qmp_commands, "query-cpu-model-expansion");
992 #endif
993 #if !defined(TARGET_S390X)
994 qmp_unregister_command(&qmp_commands, "query-cpu-model-baseline");
995 qmp_unregister_command(&qmp_commands, "query-cpu-model-comparison");
996 #endif
997 #if !defined(TARGET_PPC) && !defined(TARGET_ARM) && !defined(TARGET_I386) \
998 && !defined(TARGET_S390X)
999 qmp_unregister_command(&qmp_commands, "query-cpu-definitions");
1000 #endif
1001 }
1002
1003 void monitor_init_qmp_commands(void)
1004 {
1005 /*
1006 * Two command lists:
1007 * - qmp_commands contains all QMP commands
1008 * - qmp_cap_negotiation_commands contains just
1009 * "qmp_capabilities", to enforce capability negotiation
1010 */
1011
1012 qmp_init_marshal(&qmp_commands);
1013
1014 qmp_register_command(&qmp_commands, "query-qmp-schema",
1015 qmp_query_qmp_schema,
1016 QCO_NO_OPTIONS);
1017 qmp_register_command(&qmp_commands, "device_add", qmp_device_add,
1018 QCO_NO_OPTIONS);
1019 qmp_register_command(&qmp_commands, "netdev_add", qmp_netdev_add,
1020 QCO_NO_OPTIONS);
1021
1022 qmp_unregister_commands_hack();
1023
1024 QTAILQ_INIT(&qmp_cap_negotiation_commands);
1025 qmp_register_command(&qmp_cap_negotiation_commands, "qmp_capabilities",
1026 qmp_marshal_qmp_capabilities, QCO_NO_OPTIONS);
1027 }
1028
1029 void qmp_qmp_capabilities(Error **errp)
1030 {
1031 if (cur_mon->qmp.commands == &qmp_commands) {
1032 error_set(errp, ERROR_CLASS_COMMAND_NOT_FOUND,
1033 "Capabilities negotiation is already complete, command "
1034 "ignored");
1035 return;
1036 }
1037
1038 cur_mon->qmp.commands = &qmp_commands;
1039 }
1040
1041 /* set the current CPU defined by the user */
1042 int monitor_set_cpu(int cpu_index)
1043 {
1044 CPUState *cpu;
1045
1046 cpu = qemu_get_cpu(cpu_index);
1047 if (cpu == NULL) {
1048 return -1;
1049 }
1050 cur_mon->mon_cpu = cpu;
1051 return 0;
1052 }
1053
1054 CPUState *mon_get_cpu(void)
1055 {
1056 if (!cur_mon->mon_cpu) {
1057 if (!first_cpu) {
1058 return NULL;
1059 }
1060 monitor_set_cpu(first_cpu->cpu_index);
1061 }
1062 cpu_synchronize_state(cur_mon->mon_cpu);
1063 return cur_mon->mon_cpu;
1064 }
1065
1066 CPUArchState *mon_get_cpu_env(void)
1067 {
1068 CPUState *cs = mon_get_cpu();
1069
1070 return cs ? cs->env_ptr : NULL;
1071 }
1072
1073 int monitor_get_cpu_index(void)
1074 {
1075 CPUState *cs = mon_get_cpu();
1076
1077 return cs ? cs->cpu_index : UNASSIGNED_CPU_INDEX;
1078 }
1079
1080 static void hmp_info_registers(Monitor *mon, const QDict *qdict)
1081 {
1082 bool all_cpus = qdict_get_try_bool(qdict, "cpustate_all", false);
1083 CPUState *cs;
1084
1085 if (all_cpus) {
1086 CPU_FOREACH(cs) {
1087 monitor_printf(mon, "\nCPU#%d\n", cs->cpu_index);
1088 cpu_dump_state(cs, (FILE *)mon, monitor_fprintf, CPU_DUMP_FPU);
1089 }
1090 } else {
1091 cs = mon_get_cpu();
1092
1093 if (!cs) {
1094 monitor_printf(mon, "No CPU available\n");
1095 return;
1096 }
1097
1098 cpu_dump_state(cs, (FILE *)mon, monitor_fprintf, CPU_DUMP_FPU);
1099 }
1100 }
1101
1102 #ifdef CONFIG_TCG
1103 static void hmp_info_jit(Monitor *mon, const QDict *qdict)
1104 {
1105 if (!tcg_enabled()) {
1106 error_report("JIT information is only available with accel=tcg");
1107 return;
1108 }
1109
1110 dump_exec_info((FILE *)mon, monitor_fprintf);
1111 dump_drift_info((FILE *)mon, monitor_fprintf);
1112 }
1113
1114 static void hmp_info_opcount(Monitor *mon, const QDict *qdict)
1115 {
1116 dump_opcount_info((FILE *)mon, monitor_fprintf);
1117 }
1118 #endif
1119
1120 static void hmp_info_history(Monitor *mon, const QDict *qdict)
1121 {
1122 int i;
1123 const char *str;
1124
1125 if (!mon->rs)
1126 return;
1127 i = 0;
1128 for(;;) {
1129 str = readline_get_history(mon->rs, i);
1130 if (!str)
1131 break;
1132 monitor_printf(mon, "%d: '%s'\n", i, str);
1133 i++;
1134 }
1135 }
1136
1137 static void hmp_info_cpustats(Monitor *mon, const QDict *qdict)
1138 {
1139 CPUState *cs = mon_get_cpu();
1140
1141 if (!cs) {
1142 monitor_printf(mon, "No CPU available\n");
1143 return;
1144 }
1145 cpu_dump_statistics(cs, (FILE *)mon, &monitor_fprintf, 0);
1146 }
1147
1148 static void hmp_info_trace_events(Monitor *mon, const QDict *qdict)
1149 {
1150 const char *name = qdict_get_try_str(qdict, "name");
1151 bool has_vcpu = qdict_haskey(qdict, "vcpu");
1152 int vcpu = qdict_get_try_int(qdict, "vcpu", 0);
1153 TraceEventInfoList *events;
1154 TraceEventInfoList *elem;
1155 Error *local_err = NULL;
1156
1157 if (name == NULL) {
1158 name = "*";
1159 }
1160 if (vcpu < 0) {
1161 monitor_printf(mon, "argument vcpu must be positive");
1162 return;
1163 }
1164
1165 events = qmp_trace_event_get_state(name, has_vcpu, vcpu, &local_err);
1166 if (local_err) {
1167 error_report_err(local_err);
1168 return;
1169 }
1170
1171 for (elem = events; elem != NULL; elem = elem->next) {
1172 monitor_printf(mon, "%s : state %u\n",
1173 elem->value->name,
1174 elem->value->state == TRACE_EVENT_STATE_ENABLED ? 1 : 0);
1175 }
1176 qapi_free_TraceEventInfoList(events);
1177 }
1178
1179 void qmp_client_migrate_info(const char *protocol, const char *hostname,
1180 bool has_port, int64_t port,
1181 bool has_tls_port, int64_t tls_port,
1182 bool has_cert_subject, const char *cert_subject,
1183 Error **errp)
1184 {
1185 if (strcmp(protocol, "spice") == 0) {
1186 if (!qemu_using_spice(errp)) {
1187 return;
1188 }
1189
1190 if (!has_port && !has_tls_port) {
1191 error_setg(errp, QERR_MISSING_PARAMETER, "port/tls-port");
1192 return;
1193 }
1194
1195 if (qemu_spice_migrate_info(hostname,
1196 has_port ? port : -1,
1197 has_tls_port ? tls_port : -1,
1198 cert_subject)) {
1199 error_setg(errp, QERR_UNDEFINED_ERROR);
1200 return;
1201 }
1202 return;
1203 }
1204
1205 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "protocol", "spice");
1206 }
1207
1208 static void hmp_logfile(Monitor *mon, const QDict *qdict)
1209 {
1210 Error *err = NULL;
1211
1212 qemu_set_log_filename(qdict_get_str(qdict, "filename"), &err);
1213 if (err) {
1214 error_report_err(err);
1215 }
1216 }
1217
1218 static void hmp_log(Monitor *mon, const QDict *qdict)
1219 {
1220 int mask;
1221 const char *items = qdict_get_str(qdict, "items");
1222
1223 if (!strcmp(items, "none")) {
1224 mask = 0;
1225 } else {
1226 mask = qemu_str_to_log_mask(items);
1227 if (!mask) {
1228 help_cmd(mon, "log");
1229 return;
1230 }
1231 }
1232 qemu_set_log(mask);
1233 }
1234
1235 static void hmp_singlestep(Monitor *mon, const QDict *qdict)
1236 {
1237 const char *option = qdict_get_try_str(qdict, "option");
1238 if (!option || !strcmp(option, "on")) {
1239 singlestep = 1;
1240 } else if (!strcmp(option, "off")) {
1241 singlestep = 0;
1242 } else {
1243 monitor_printf(mon, "unexpected option %s\n", option);
1244 }
1245 }
1246
1247 static void hmp_gdbserver(Monitor *mon, const QDict *qdict)
1248 {
1249 const char *device = qdict_get_try_str(qdict, "device");
1250 if (!device)
1251 device = "tcp::" DEFAULT_GDBSTUB_PORT;
1252 if (gdbserver_start(device) < 0) {
1253 monitor_printf(mon, "Could not open gdbserver on device '%s'\n",
1254 device);
1255 } else if (strcmp(device, "none") == 0) {
1256 monitor_printf(mon, "Disabled gdbserver\n");
1257 } else {
1258 monitor_printf(mon, "Waiting for gdb connection on device '%s'\n",
1259 device);
1260 }
1261 }
1262
1263 static void hmp_watchdog_action(Monitor *mon, const QDict *qdict)
1264 {
1265 const char *action = qdict_get_str(qdict, "action");
1266 if (select_watchdog_action(action) == -1) {
1267 monitor_printf(mon, "Unknown watchdog action '%s'\n", action);
1268 }
1269 }
1270
1271 static void monitor_printc(Monitor *mon, int c)
1272 {
1273 monitor_printf(mon, "'");
1274 switch(c) {
1275 case '\'':
1276 monitor_printf(mon, "\\'");
1277 break;
1278 case '\\':
1279 monitor_printf(mon, "\\\\");
1280 break;
1281 case '\n':
1282 monitor_printf(mon, "\\n");
1283 break;
1284 case '\r':
1285 monitor_printf(mon, "\\r");
1286 break;
1287 default:
1288 if (c >= 32 && c <= 126) {
1289 monitor_printf(mon, "%c", c);
1290 } else {
1291 monitor_printf(mon, "\\x%02x", c);
1292 }
1293 break;
1294 }
1295 monitor_printf(mon, "'");
1296 }
1297
1298 static void memory_dump(Monitor *mon, int count, int format, int wsize,
1299 hwaddr addr, int is_physical)
1300 {
1301 int l, line_size, i, max_digits, len;
1302 uint8_t buf[16];
1303 uint64_t v;
1304 CPUState *cs = mon_get_cpu();
1305
1306 if (!cs && (format == 'i' || !is_physical)) {
1307 monitor_printf(mon, "Can not dump without CPU\n");
1308 return;
1309 }
1310
1311 if (format == 'i') {
1312 int flags = 0;
1313 #ifdef TARGET_I386
1314 CPUArchState *env = mon_get_cpu_env();
1315 if (wsize == 2) {
1316 flags = 1;
1317 } else if (wsize == 4) {
1318 flags = 0;
1319 } else {
1320 /* as default we use the current CS size */
1321 flags = 0;
1322 if (env) {
1323 #ifdef TARGET_X86_64
1324 if ((env->efer & MSR_EFER_LMA) &&
1325 (env->segs[R_CS].flags & DESC_L_MASK))
1326 flags = 2;
1327 else
1328 #endif
1329 if (!(env->segs[R_CS].flags & DESC_B_MASK))
1330 flags = 1;
1331 }
1332 }
1333 #endif
1334 #ifdef TARGET_PPC
1335 CPUArchState *env = mon_get_cpu_env();
1336 flags = msr_le << 16;
1337 flags |= env->bfd_mach;
1338 #endif
1339 monitor_disas(mon, cs, addr, count, is_physical, flags);
1340 return;
1341 }
1342
1343 len = wsize * count;
1344 if (wsize == 1)
1345 line_size = 8;
1346 else
1347 line_size = 16;
1348 max_digits = 0;
1349
1350 switch(format) {
1351 case 'o':
1352 max_digits = DIV_ROUND_UP(wsize * 8, 3);
1353 break;
1354 default:
1355 case 'x':
1356 max_digits = (wsize * 8) / 4;
1357 break;
1358 case 'u':
1359 case 'd':
1360 max_digits = DIV_ROUND_UP(wsize * 8 * 10, 33);
1361 break;
1362 case 'c':
1363 wsize = 1;
1364 break;
1365 }
1366
1367 while (len > 0) {
1368 if (is_physical)
1369 monitor_printf(mon, TARGET_FMT_plx ":", addr);
1370 else
1371 monitor_printf(mon, TARGET_FMT_lx ":", (target_ulong)addr);
1372 l = len;
1373 if (l > line_size)
1374 l = line_size;
1375 if (is_physical) {
1376 cpu_physical_memory_read(addr, buf, l);
1377 } else {
1378 if (cpu_memory_rw_debug(cs, addr, buf, l, 0) < 0) {
1379 monitor_printf(mon, " Cannot access memory\n");
1380 break;
1381 }
1382 }
1383 i = 0;
1384 while (i < l) {
1385 switch(wsize) {
1386 default:
1387 case 1:
1388 v = ldub_p(buf + i);
1389 break;
1390 case 2:
1391 v = lduw_p(buf + i);
1392 break;
1393 case 4:
1394 v = (uint32_t)ldl_p(buf + i);
1395 break;
1396 case 8:
1397 v = ldq_p(buf + i);
1398 break;
1399 }
1400 monitor_printf(mon, " ");
1401 switch(format) {
1402 case 'o':
1403 monitor_printf(mon, "%#*" PRIo64, max_digits, v);
1404 break;
1405 case 'x':
1406 monitor_printf(mon, "0x%0*" PRIx64, max_digits, v);
1407 break;
1408 case 'u':
1409 monitor_printf(mon, "%*" PRIu64, max_digits, v);
1410 break;
1411 case 'd':
1412 monitor_printf(mon, "%*" PRId64, max_digits, v);
1413 break;
1414 case 'c':
1415 monitor_printc(mon, v);
1416 break;
1417 }
1418 i += wsize;
1419 }
1420 monitor_printf(mon, "\n");
1421 addr += l;
1422 len -= l;
1423 }
1424 }
1425
1426 static void hmp_memory_dump(Monitor *mon, const QDict *qdict)
1427 {
1428 int count = qdict_get_int(qdict, "count");
1429 int format = qdict_get_int(qdict, "format");
1430 int size = qdict_get_int(qdict, "size");
1431 target_long addr = qdict_get_int(qdict, "addr");
1432
1433 memory_dump(mon, count, format, size, addr, 0);
1434 }
1435
1436 static void hmp_physical_memory_dump(Monitor *mon, const QDict *qdict)
1437 {
1438 int count = qdict_get_int(qdict, "count");
1439 int format = qdict_get_int(qdict, "format");
1440 int size = qdict_get_int(qdict, "size");
1441 hwaddr addr = qdict_get_int(qdict, "addr");
1442
1443 memory_dump(mon, count, format, size, addr, 1);
1444 }
1445
1446 static void *gpa2hva(MemoryRegion **p_mr, hwaddr addr, Error **errp)
1447 {
1448 MemoryRegionSection mrs = memory_region_find(get_system_memory(),
1449 addr, 1);
1450
1451 if (!mrs.mr) {
1452 error_setg(errp, "No memory is mapped at address 0x%" HWADDR_PRIx, addr);
1453 return NULL;
1454 }
1455
1456 if (!memory_region_is_ram(mrs.mr) && !memory_region_is_romd(mrs.mr)) {
1457 error_setg(errp, "Memory at address 0x%" HWADDR_PRIx "is not RAM", addr);
1458 memory_region_unref(mrs.mr);
1459 return NULL;
1460 }
1461
1462 *p_mr = mrs.mr;
1463 return qemu_map_ram_ptr(mrs.mr->ram_block, mrs.offset_within_region);
1464 }
1465
1466 static void hmp_gpa2hva(Monitor *mon, const QDict *qdict)
1467 {
1468 hwaddr addr = qdict_get_int(qdict, "addr");
1469 Error *local_err = NULL;
1470 MemoryRegion *mr = NULL;
1471 void *ptr;
1472
1473 ptr = gpa2hva(&mr, addr, &local_err);
1474 if (local_err) {
1475 error_report_err(local_err);
1476 return;
1477 }
1478
1479 monitor_printf(mon, "Host virtual address for 0x%" HWADDR_PRIx
1480 " (%s) is %p\n",
1481 addr, mr->name, ptr);
1482
1483 memory_region_unref(mr);
1484 }
1485
1486 #ifdef CONFIG_LINUX
1487 static uint64_t vtop(void *ptr, Error **errp)
1488 {
1489 uint64_t pinfo;
1490 uint64_t ret = -1;
1491 uintptr_t addr = (uintptr_t) ptr;
1492 uintptr_t pagesize = getpagesize();
1493 off_t offset = addr / pagesize * sizeof(pinfo);
1494 int fd;
1495
1496 fd = open("/proc/self/pagemap", O_RDONLY);
1497 if (fd == -1) {
1498 error_setg_errno(errp, errno, "Cannot open /proc/self/pagemap");
1499 return -1;
1500 }
1501
1502 /* Force copy-on-write if necessary. */
1503 atomic_add((uint8_t *)ptr, 0);
1504
1505 if (pread(fd, &pinfo, sizeof(pinfo), offset) != sizeof(pinfo)) {
1506 error_setg_errno(errp, errno, "Cannot read pagemap");
1507 goto out;
1508 }
1509 if ((pinfo & (1ull << 63)) == 0) {
1510 error_setg(errp, "Page not present");
1511 goto out;
1512 }
1513 ret = ((pinfo & 0x007fffffffffffffull) * pagesize) | (addr & (pagesize - 1));
1514
1515 out:
1516 close(fd);
1517 return ret;
1518 }
1519
1520 static void hmp_gpa2hpa(Monitor *mon, const QDict *qdict)
1521 {
1522 hwaddr addr = qdict_get_int(qdict, "addr");
1523 Error *local_err = NULL;
1524 MemoryRegion *mr = NULL;
1525 void *ptr;
1526 uint64_t physaddr;
1527
1528 ptr = gpa2hva(&mr, addr, &local_err);
1529 if (local_err) {
1530 error_report_err(local_err);
1531 return;
1532 }
1533
1534 physaddr = vtop(ptr, &local_err);
1535 if (local_err) {
1536 error_report_err(local_err);
1537 } else {
1538 monitor_printf(mon, "Host physical address for 0x%" HWADDR_PRIx
1539 " (%s) is 0x%" PRIx64 "\n",
1540 addr, mr->name, (uint64_t) physaddr);
1541 }
1542
1543 memory_region_unref(mr);
1544 }
1545 #endif
1546
1547 static void do_print(Monitor *mon, const QDict *qdict)
1548 {
1549 int format = qdict_get_int(qdict, "format");
1550 hwaddr val = qdict_get_int(qdict, "val");
1551
1552 switch(format) {
1553 case 'o':
1554 monitor_printf(mon, "%#" HWADDR_PRIo, val);
1555 break;
1556 case 'x':
1557 monitor_printf(mon, "%#" HWADDR_PRIx, val);
1558 break;
1559 case 'u':
1560 monitor_printf(mon, "%" HWADDR_PRIu, val);
1561 break;
1562 default:
1563 case 'd':
1564 monitor_printf(mon, "%" HWADDR_PRId, val);
1565 break;
1566 case 'c':
1567 monitor_printc(mon, val);
1568 break;
1569 }
1570 monitor_printf(mon, "\n");
1571 }
1572
1573 static void hmp_sum(Monitor *mon, const QDict *qdict)
1574 {
1575 uint32_t addr;
1576 uint16_t sum;
1577 uint32_t start = qdict_get_int(qdict, "start");
1578 uint32_t size = qdict_get_int(qdict, "size");
1579
1580 sum = 0;
1581 for(addr = start; addr < (start + size); addr++) {
1582 uint8_t val = address_space_ldub(&address_space_memory, addr,
1583 MEMTXATTRS_UNSPECIFIED, NULL);
1584 /* BSD sum algorithm ('sum' Unix command) */
1585 sum = (sum >> 1) | (sum << 15);
1586 sum += val;
1587 }
1588 monitor_printf(mon, "%05d\n", sum);
1589 }
1590
1591 static int mouse_button_state;
1592
1593 static void hmp_mouse_move(Monitor *mon, const QDict *qdict)
1594 {
1595 int dx, dy, dz, button;
1596 const char *dx_str = qdict_get_str(qdict, "dx_str");
1597 const char *dy_str = qdict_get_str(qdict, "dy_str");
1598 const char *dz_str = qdict_get_try_str(qdict, "dz_str");
1599
1600 dx = strtol(dx_str, NULL, 0);
1601 dy = strtol(dy_str, NULL, 0);
1602 qemu_input_queue_rel(NULL, INPUT_AXIS_X, dx);
1603 qemu_input_queue_rel(NULL, INPUT_AXIS_Y, dy);
1604
1605 if (dz_str) {
1606 dz = strtol(dz_str, NULL, 0);
1607 if (dz != 0) {
1608 button = (dz > 0) ? INPUT_BUTTON_WHEEL_UP : INPUT_BUTTON_WHEEL_DOWN;
1609 qemu_input_queue_btn(NULL, button, true);
1610 qemu_input_event_sync();
1611 qemu_input_queue_btn(NULL, button, false);
1612 }
1613 }
1614 qemu_input_event_sync();
1615 }
1616
1617 static void hmp_mouse_button(Monitor *mon, const QDict *qdict)
1618 {
1619 static uint32_t bmap[INPUT_BUTTON__MAX] = {
1620 [INPUT_BUTTON_LEFT] = MOUSE_EVENT_LBUTTON,
1621 [INPUT_BUTTON_MIDDLE] = MOUSE_EVENT_MBUTTON,
1622 [INPUT_BUTTON_RIGHT] = MOUSE_EVENT_RBUTTON,
1623 };
1624 int button_state = qdict_get_int(qdict, "button_state");
1625
1626 if (mouse_button_state == button_state) {
1627 return;
1628 }
1629 qemu_input_update_buttons(NULL, bmap, mouse_button_state, button_state);
1630 qemu_input_event_sync();
1631 mouse_button_state = button_state;
1632 }
1633
1634 static void hmp_ioport_read(Monitor *mon, const QDict *qdict)
1635 {
1636 int size = qdict_get_int(qdict, "size");
1637 int addr = qdict_get_int(qdict, "addr");
1638 int has_index = qdict_haskey(qdict, "index");
1639 uint32_t val;
1640 int suffix;
1641
1642 if (has_index) {
1643 int index = qdict_get_int(qdict, "index");
1644 cpu_outb(addr & IOPORTS_MASK, index & 0xff);
1645 addr++;
1646 }
1647 addr &= 0xffff;
1648
1649 switch(size) {
1650 default:
1651 case 1:
1652 val = cpu_inb(addr);
1653 suffix = 'b';
1654 break;
1655 case 2:
1656 val = cpu_inw(addr);
1657 suffix = 'w';
1658 break;
1659 case 4:
1660 val = cpu_inl(addr);
1661 suffix = 'l';
1662 break;
1663 }
1664 monitor_printf(mon, "port%c[0x%04x] = %#0*x\n",
1665 suffix, addr, size * 2, val);
1666 }
1667
1668 static void hmp_ioport_write(Monitor *mon, const QDict *qdict)
1669 {
1670 int size = qdict_get_int(qdict, "size");
1671 int addr = qdict_get_int(qdict, "addr");
1672 int val = qdict_get_int(qdict, "val");
1673
1674 addr &= IOPORTS_MASK;
1675
1676 switch (size) {
1677 default:
1678 case 1:
1679 cpu_outb(addr, val);
1680 break;
1681 case 2:
1682 cpu_outw(addr, val);
1683 break;
1684 case 4:
1685 cpu_outl(addr, val);
1686 break;
1687 }
1688 }
1689
1690 static void hmp_boot_set(Monitor *mon, const QDict *qdict)
1691 {
1692 Error *local_err = NULL;
1693 const char *bootdevice = qdict_get_str(qdict, "bootdevice");
1694
1695 qemu_boot_set(bootdevice, &local_err);
1696 if (local_err) {
1697 error_report_err(local_err);
1698 } else {
1699 monitor_printf(mon, "boot device list now set to %s\n", bootdevice);
1700 }
1701 }
1702
1703 static void hmp_info_mtree(Monitor *mon, const QDict *qdict)
1704 {
1705 bool flatview = qdict_get_try_bool(qdict, "flatview", false);
1706
1707 mtree_info((fprintf_function)monitor_printf, mon, flatview);
1708 }
1709
1710 static void hmp_info_numa(Monitor *mon, const QDict *qdict)
1711 {
1712 int i;
1713 uint64_t *node_mem;
1714 CpuInfoList *cpu_list, *cpu;
1715
1716 cpu_list = qmp_query_cpus(&error_abort);
1717 node_mem = g_new0(uint64_t, nb_numa_nodes);
1718 query_numa_node_mem(node_mem);
1719 monitor_printf(mon, "%d nodes\n", nb_numa_nodes);
1720 for (i = 0; i < nb_numa_nodes; i++) {
1721 monitor_printf(mon, "node %d cpus:", i);
1722 for (cpu = cpu_list; cpu; cpu = cpu->next) {
1723 if (cpu->value->has_props && cpu->value->props->has_node_id &&
1724 cpu->value->props->node_id == i) {
1725 monitor_printf(mon, " %" PRIi64, cpu->value->CPU);
1726 }
1727 }
1728 monitor_printf(mon, "\n");
1729 monitor_printf(mon, "node %d size: %" PRId64 " MB\n", i,
1730 node_mem[i] >> 20);
1731 }
1732 qapi_free_CpuInfoList(cpu_list);
1733 g_free(node_mem);
1734 }
1735
1736 #ifdef CONFIG_PROFILER
1737
1738 int64_t tcg_time;
1739 int64_t dev_time;
1740
1741 static void hmp_info_profile(Monitor *mon, const QDict *qdict)
1742 {
1743 monitor_printf(mon, "async time %" PRId64 " (%0.3f)\n",
1744 dev_time, dev_time / (double)NANOSECONDS_PER_SECOND);
1745 monitor_printf(mon, "qemu time %" PRId64 " (%0.3f)\n",
1746 tcg_time, tcg_time / (double)NANOSECONDS_PER_SECOND);
1747 tcg_time = 0;
1748 dev_time = 0;
1749 }
1750 #else
1751 static void hmp_info_profile(Monitor *mon, const QDict *qdict)
1752 {
1753 monitor_printf(mon, "Internal profiler not compiled\n");
1754 }
1755 #endif
1756
1757 /* Capture support */
1758 static QLIST_HEAD (capture_list_head, CaptureState) capture_head;
1759
1760 static void hmp_info_capture(Monitor *mon, const QDict *qdict)
1761 {
1762 int i;
1763 CaptureState *s;
1764
1765 for (s = capture_head.lh_first, i = 0; s; s = s->entries.le_next, ++i) {
1766 monitor_printf(mon, "[%d]: ", i);
1767 s->ops.info (s->opaque);
1768 }
1769 }
1770
1771 static void hmp_stopcapture(Monitor *mon, const QDict *qdict)
1772 {
1773 int i;
1774 int n = qdict_get_int(qdict, "n");
1775 CaptureState *s;
1776
1777 for (s = capture_head.lh_first, i = 0; s; s = s->entries.le_next, ++i) {
1778 if (i == n) {
1779 s->ops.destroy (s->opaque);
1780 QLIST_REMOVE (s, entries);
1781 g_free (s);
1782 return;
1783 }
1784 }
1785 }
1786
1787 static void hmp_wavcapture(Monitor *mon, const QDict *qdict)
1788 {
1789 const char *path = qdict_get_str(qdict, "path");
1790 int has_freq = qdict_haskey(qdict, "freq");
1791 int freq = qdict_get_try_int(qdict, "freq", -1);
1792 int has_bits = qdict_haskey(qdict, "bits");
1793 int bits = qdict_get_try_int(qdict, "bits", -1);
1794 int has_channels = qdict_haskey(qdict, "nchannels");
1795 int nchannels = qdict_get_try_int(qdict, "nchannels", -1);
1796 CaptureState *s;
1797
1798 s = g_malloc0 (sizeof (*s));
1799
1800 freq = has_freq ? freq : 44100;
1801 bits = has_bits ? bits : 16;
1802 nchannels = has_channels ? nchannels : 2;
1803
1804 if (wav_start_capture (s, path, freq, bits, nchannels)) {
1805 monitor_printf(mon, "Failed to add wave capture\n");
1806 g_free (s);
1807 return;
1808 }
1809 QLIST_INSERT_HEAD (&capture_head, s, entries);
1810 }
1811
1812 static qemu_acl *find_acl(Monitor *mon, const char *name)
1813 {
1814 qemu_acl *acl = qemu_acl_find(name);
1815
1816 if (!acl) {
1817 monitor_printf(mon, "acl: unknown list '%s'\n", name);
1818 }
1819 return acl;
1820 }
1821
1822 static void hmp_acl_show(Monitor *mon, const QDict *qdict)
1823 {
1824 const char *aclname = qdict_get_str(qdict, "aclname");
1825 qemu_acl *acl = find_acl(mon, aclname);
1826 qemu_acl_entry *entry;
1827 int i = 0;
1828
1829 if (acl) {
1830 monitor_printf(mon, "policy: %s\n",
1831 acl->defaultDeny ? "deny" : "allow");
1832 QTAILQ_FOREACH(entry, &acl->entries, next) {
1833 i++;
1834 monitor_printf(mon, "%d: %s %s\n", i,
1835 entry->deny ? "deny" : "allow", entry->match);
1836 }
1837 }
1838 }
1839
1840 static void hmp_acl_reset(Monitor *mon, const QDict *qdict)
1841 {
1842 const char *aclname = qdict_get_str(qdict, "aclname");
1843 qemu_acl *acl = find_acl(mon, aclname);
1844
1845 if (acl) {
1846 qemu_acl_reset(acl);
1847 monitor_printf(mon, "acl: removed all rules\n");
1848 }
1849 }
1850
1851 static void hmp_acl_policy(Monitor *mon, const QDict *qdict)
1852 {
1853 const char *aclname = qdict_get_str(qdict, "aclname");
1854 const char *policy = qdict_get_str(qdict, "policy");
1855 qemu_acl *acl = find_acl(mon, aclname);
1856
1857 if (acl) {
1858 if (strcmp(policy, "allow") == 0) {
1859 acl->defaultDeny = 0;
1860 monitor_printf(mon, "acl: policy set to 'allow'\n");
1861 } else if (strcmp(policy, "deny") == 0) {
1862 acl->defaultDeny = 1;
1863 monitor_printf(mon, "acl: policy set to 'deny'\n");
1864 } else {
1865 monitor_printf(mon, "acl: unknown policy '%s', "
1866 "expected 'deny' or 'allow'\n", policy);
1867 }
1868 }
1869 }
1870
1871 static void hmp_acl_add(Monitor *mon, const QDict *qdict)
1872 {
1873 const char *aclname = qdict_get_str(qdict, "aclname");
1874 const char *match = qdict_get_str(qdict, "match");
1875 const char *policy = qdict_get_str(qdict, "policy");
1876 int has_index = qdict_haskey(qdict, "index");
1877 int index = qdict_get_try_int(qdict, "index", -1);
1878 qemu_acl *acl = find_acl(mon, aclname);
1879 int deny, ret;
1880
1881 if (acl) {
1882 if (strcmp(policy, "allow") == 0) {
1883 deny = 0;
1884 } else if (strcmp(policy, "deny") == 0) {
1885 deny = 1;
1886 } else {
1887 monitor_printf(mon, "acl: unknown policy '%s', "
1888 "expected 'deny' or 'allow'\n", policy);
1889 return;
1890 }
1891 if (has_index)
1892 ret = qemu_acl_insert(acl, deny, match, index);
1893 else
1894 ret = qemu_acl_append(acl, deny, match);
1895 if (ret < 0)
1896 monitor_printf(mon, "acl: unable to add acl entry\n");
1897 else
1898 monitor_printf(mon, "acl: added rule at position %d\n", ret);
1899 }
1900 }
1901
1902 static void hmp_acl_remove(Monitor *mon, const QDict *qdict)
1903 {
1904 const char *aclname = qdict_get_str(qdict, "aclname");
1905 const char *match = qdict_get_str(qdict, "match");
1906 qemu_acl *acl = find_acl(mon, aclname);
1907 int ret;
1908
1909 if (acl) {
1910 ret = qemu_acl_remove(acl, match);
1911 if (ret < 0)
1912 monitor_printf(mon, "acl: no matching acl entry\n");
1913 else
1914 monitor_printf(mon, "acl: removed rule at position %d\n", ret);
1915 }
1916 }
1917
1918 void qmp_getfd(const char *fdname, Error **errp)
1919 {
1920 mon_fd_t *monfd;
1921 int fd;
1922
1923 fd = qemu_chr_fe_get_msgfd(&cur_mon->chr);
1924 if (fd == -1) {
1925 error_setg(errp, QERR_FD_NOT_SUPPLIED);
1926 return;
1927 }
1928
1929 if (qemu_isdigit(fdname[0])) {
1930 close(fd);
1931 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "fdname",
1932 "a name not starting with a digit");
1933 return;
1934 }
1935
1936 QLIST_FOREACH(monfd, &cur_mon->fds, next) {
1937 if (strcmp(monfd->name, fdname) != 0) {
1938 continue;
1939 }
1940
1941 close(monfd->fd);
1942 monfd->fd = fd;
1943 return;
1944 }
1945
1946 monfd = g_malloc0(sizeof(mon_fd_t));
1947 monfd->name = g_strdup(fdname);
1948 monfd->fd = fd;
1949
1950 QLIST_INSERT_HEAD(&cur_mon->fds, monfd, next);
1951 }
1952
1953 void qmp_closefd(const char *fdname, Error **errp)
1954 {
1955 mon_fd_t *monfd;
1956
1957 QLIST_FOREACH(monfd, &cur_mon->fds, next) {
1958 if (strcmp(monfd->name, fdname) != 0) {
1959 continue;
1960 }
1961
1962 QLIST_REMOVE(monfd, next);
1963 close(monfd->fd);
1964 g_free(monfd->name);
1965 g_free(monfd);
1966 return;
1967 }
1968
1969 error_setg(errp, QERR_FD_NOT_FOUND, fdname);
1970 }
1971
1972 int monitor_get_fd(Monitor *mon, const char *fdname, Error **errp)
1973 {
1974 mon_fd_t *monfd;
1975
1976 QLIST_FOREACH(monfd, &mon->fds, next) {
1977 int fd;
1978
1979 if (strcmp(monfd->name, fdname) != 0) {
1980 continue;
1981 }
1982
1983 fd = monfd->fd;
1984
1985 /* caller takes ownership of fd */
1986 QLIST_REMOVE(monfd, next);
1987 g_free(monfd->name);
1988 g_free(monfd);
1989
1990 return fd;
1991 }
1992
1993 error_setg(errp, "File descriptor named '%s' has not been found", fdname);
1994 return -1;
1995 }
1996
1997 static void monitor_fdset_cleanup(MonFdset *mon_fdset)
1998 {
1999 MonFdsetFd *mon_fdset_fd;
2000 MonFdsetFd *mon_fdset_fd_next;
2001
2002 QLIST_FOREACH_SAFE(mon_fdset_fd, &mon_fdset->fds, next, mon_fdset_fd_next) {
2003 if ((mon_fdset_fd->removed ||
2004 (QLIST_EMPTY(&mon_fdset->dup_fds) && mon_refcount == 0)) &&
2005 runstate_is_running()) {
2006 close(mon_fdset_fd->fd);
2007 g_free(mon_fdset_fd->opaque);
2008 QLIST_REMOVE(mon_fdset_fd, next);
2009 g_free(mon_fdset_fd);
2010 }
2011 }
2012
2013 if (QLIST_EMPTY(&mon_fdset->fds) && QLIST_EMPTY(&mon_fdset->dup_fds)) {
2014 QLIST_REMOVE(mon_fdset, next);
2015 g_free(mon_fdset);
2016 }
2017 }
2018
2019 static void monitor_fdsets_cleanup(void)
2020 {
2021 MonFdset *mon_fdset;
2022 MonFdset *mon_fdset_next;
2023
2024 QLIST_FOREACH_SAFE(mon_fdset, &mon_fdsets, next, mon_fdset_next) {
2025 monitor_fdset_cleanup(mon_fdset);
2026 }
2027 }
2028
2029 AddfdInfo *qmp_add_fd(bool has_fdset_id, int64_t fdset_id, bool has_opaque,
2030 const char *opaque, Error **errp)
2031 {
2032 int fd;
2033 Monitor *mon = cur_mon;
2034 AddfdInfo *fdinfo;
2035
2036 fd = qemu_chr_fe_get_msgfd(&mon->chr);
2037 if (fd == -1) {
2038 error_setg(errp, QERR_FD_NOT_SUPPLIED);
2039 goto error;
2040 }
2041
2042 fdinfo = monitor_fdset_add_fd(fd, has_fdset_id, fdset_id,
2043 has_opaque, opaque, errp);
2044 if (fdinfo) {
2045 return fdinfo;
2046 }
2047
2048 error:
2049 if (fd != -1) {
2050 close(fd);
2051 }
2052 return NULL;
2053 }
2054
2055 void qmp_remove_fd(int64_t fdset_id, bool has_fd, int64_t fd, Error **errp)
2056 {
2057 MonFdset *mon_fdset;
2058 MonFdsetFd *mon_fdset_fd;
2059 char fd_str[60];
2060
2061 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2062 if (mon_fdset->id != fdset_id) {
2063 continue;
2064 }
2065 QLIST_FOREACH(mon_fdset_fd, &mon_fdset->fds, next) {
2066 if (has_fd) {
2067 if (mon_fdset_fd->fd != fd) {
2068 continue;
2069 }
2070 mon_fdset_fd->removed = true;
2071 break;
2072 } else {
2073 mon_fdset_fd->removed = true;
2074 }
2075 }
2076 if (has_fd && !mon_fdset_fd) {
2077 goto error;
2078 }
2079 monitor_fdset_cleanup(mon_fdset);
2080 return;
2081 }
2082
2083 error:
2084 if (has_fd) {
2085 snprintf(fd_str, sizeof(fd_str), "fdset-id:%" PRId64 ", fd:%" PRId64,
2086 fdset_id, fd);
2087 } else {
2088 snprintf(fd_str, sizeof(fd_str), "fdset-id:%" PRId64, fdset_id);
2089 }
2090 error_setg(errp, QERR_FD_NOT_FOUND, fd_str);
2091 }
2092
2093 FdsetInfoList *qmp_query_fdsets(Error **errp)
2094 {
2095 MonFdset *mon_fdset;
2096 MonFdsetFd *mon_fdset_fd;
2097 FdsetInfoList *fdset_list = NULL;
2098
2099 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2100 FdsetInfoList *fdset_info = g_malloc0(sizeof(*fdset_info));
2101 FdsetFdInfoList *fdsetfd_list = NULL;
2102
2103 fdset_info->value = g_malloc0(sizeof(*fdset_info->value));
2104 fdset_info->value->fdset_id = mon_fdset->id;
2105
2106 QLIST_FOREACH(mon_fdset_fd, &mon_fdset->fds, next) {
2107 FdsetFdInfoList *fdsetfd_info;
2108
2109 fdsetfd_info = g_malloc0(sizeof(*fdsetfd_info));
2110 fdsetfd_info->value = g_malloc0(sizeof(*fdsetfd_info->value));
2111 fdsetfd_info->value->fd = mon_fdset_fd->fd;
2112 if (mon_fdset_fd->opaque) {
2113 fdsetfd_info->value->has_opaque = true;
2114 fdsetfd_info->value->opaque = g_strdup(mon_fdset_fd->opaque);
2115 } else {
2116 fdsetfd_info->value->has_opaque = false;
2117 }
2118
2119 fdsetfd_info->next = fdsetfd_list;
2120 fdsetfd_list = fdsetfd_info;
2121 }
2122
2123 fdset_info->value->fds = fdsetfd_list;
2124
2125 fdset_info->next = fdset_list;
2126 fdset_list = fdset_info;
2127 }
2128
2129 return fdset_list;
2130 }
2131
2132 AddfdInfo *monitor_fdset_add_fd(int fd, bool has_fdset_id, int64_t fdset_id,
2133 bool has_opaque, const char *opaque,
2134 Error **errp)
2135 {
2136 MonFdset *mon_fdset = NULL;
2137 MonFdsetFd *mon_fdset_fd;
2138 AddfdInfo *fdinfo;
2139
2140 if (has_fdset_id) {
2141 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2142 /* Break if match found or match impossible due to ordering by ID */
2143 if (fdset_id <= mon_fdset->id) {
2144 if (fdset_id < mon_fdset->id) {
2145 mon_fdset = NULL;
2146 }
2147 break;
2148 }
2149 }
2150 }
2151
2152 if (mon_fdset == NULL) {
2153 int64_t fdset_id_prev = -1;
2154 MonFdset *mon_fdset_cur = QLIST_FIRST(&mon_fdsets);
2155
2156 if (has_fdset_id) {
2157 if (fdset_id < 0) {
2158 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "fdset-id",
2159 "a non-negative value");
2160 return NULL;
2161 }
2162 /* Use specified fdset ID */
2163 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2164 mon_fdset_cur = mon_fdset;
2165 if (fdset_id < mon_fdset_cur->id) {
2166 break;
2167 }
2168 }
2169 } else {
2170 /* Use first available fdset ID */
2171 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2172 mon_fdset_cur = mon_fdset;
2173 if (fdset_id_prev == mon_fdset_cur->id - 1) {
2174 fdset_id_prev = mon_fdset_cur->id;
2175 continue;
2176 }
2177 break;
2178 }
2179 }
2180
2181 mon_fdset = g_malloc0(sizeof(*mon_fdset));
2182 if (has_fdset_id) {
2183 mon_fdset->id = fdset_id;
2184 } else {
2185 mon_fdset->id = fdset_id_prev + 1;
2186 }
2187
2188 /* The fdset list is ordered by fdset ID */
2189 if (!mon_fdset_cur) {
2190 QLIST_INSERT_HEAD(&mon_fdsets, mon_fdset, next);
2191 } else if (mon_fdset->id < mon_fdset_cur->id) {
2192 QLIST_INSERT_BEFORE(mon_fdset_cur, mon_fdset, next);
2193 } else {
2194 QLIST_INSERT_AFTER(mon_fdset_cur, mon_fdset, next);
2195 }
2196 }
2197
2198 mon_fdset_fd = g_malloc0(sizeof(*mon_fdset_fd));
2199 mon_fdset_fd->fd = fd;
2200 mon_fdset_fd->removed = false;
2201 if (has_opaque) {
2202 mon_fdset_fd->opaque = g_strdup(opaque);
2203 }
2204 QLIST_INSERT_HEAD(&mon_fdset->fds, mon_fdset_fd, next);
2205
2206 fdinfo = g_malloc0(sizeof(*fdinfo));
2207 fdinfo->fdset_id = mon_fdset->id;
2208 fdinfo->fd = mon_fdset_fd->fd;
2209
2210 return fdinfo;
2211 }
2212
2213 int monitor_fdset_get_fd(int64_t fdset_id, int flags)
2214 {
2215 #ifndef _WIN32
2216 MonFdset *mon_fdset;
2217 MonFdsetFd *mon_fdset_fd;
2218 int mon_fd_flags;
2219
2220 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2221 if (mon_fdset->id != fdset_id) {
2222 continue;
2223 }
2224 QLIST_FOREACH(mon_fdset_fd, &mon_fdset->fds, next) {
2225 mon_fd_flags = fcntl(mon_fdset_fd->fd, F_GETFL);
2226 if (mon_fd_flags == -1) {
2227 return -1;
2228 }
2229
2230 if ((flags & O_ACCMODE) == (mon_fd_flags & O_ACCMODE)) {
2231 return mon_fdset_fd->fd;
2232 }
2233 }
2234 errno = EACCES;
2235 return -1;
2236 }
2237 #endif
2238
2239 errno = ENOENT;
2240 return -1;
2241 }
2242
2243 int monitor_fdset_dup_fd_add(int64_t fdset_id, int dup_fd)
2244 {
2245 MonFdset *mon_fdset;
2246 MonFdsetFd *mon_fdset_fd_dup;
2247
2248 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2249 if (mon_fdset->id != fdset_id) {
2250 continue;
2251 }
2252 QLIST_FOREACH(mon_fdset_fd_dup, &mon_fdset->dup_fds, next) {
2253 if (mon_fdset_fd_dup->fd == dup_fd) {
2254 return -1;
2255 }
2256 }
2257 mon_fdset_fd_dup = g_malloc0(sizeof(*mon_fdset_fd_dup));
2258 mon_fdset_fd_dup->fd = dup_fd;
2259 QLIST_INSERT_HEAD(&mon_fdset->dup_fds, mon_fdset_fd_dup, next);
2260 return 0;
2261 }
2262 return -1;
2263 }
2264
2265 static int monitor_fdset_dup_fd_find_remove(int dup_fd, bool remove)
2266 {
2267 MonFdset *mon_fdset;
2268 MonFdsetFd *mon_fdset_fd_dup;
2269
2270 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2271 QLIST_FOREACH(mon_fdset_fd_dup, &mon_fdset->dup_fds, next) {
2272 if (mon_fdset_fd_dup->fd == dup_fd) {
2273 if (remove) {
2274 QLIST_REMOVE(mon_fdset_fd_dup, next);
2275 if (QLIST_EMPTY(&mon_fdset->dup_fds)) {
2276 monitor_fdset_cleanup(mon_fdset);
2277 }
2278 return -1;
2279 } else {
2280 return mon_fdset->id;
2281 }
2282 }
2283 }
2284 }
2285 return -1;
2286 }
2287
2288 int monitor_fdset_dup_fd_find(int dup_fd)
2289 {
2290 return monitor_fdset_dup_fd_find_remove(dup_fd, false);
2291 }
2292
2293 void monitor_fdset_dup_fd_remove(int dup_fd)
2294 {
2295 monitor_fdset_dup_fd_find_remove(dup_fd, true);
2296 }
2297
2298 int monitor_fd_param(Monitor *mon, const char *fdname, Error **errp)
2299 {
2300 int fd;
2301 Error *local_err = NULL;
2302
2303 if (!qemu_isdigit(fdname[0]) && mon) {
2304 fd = monitor_get_fd(mon, fdname, &local_err);
2305 } else {
2306 fd = qemu_parse_fd(fdname);
2307 if (fd == -1) {
2308 error_setg(&local_err, "Invalid file descriptor number '%s'",
2309 fdname);
2310 }
2311 }
2312 if (local_err) {
2313 error_propagate(errp, local_err);
2314 assert(fd == -1);
2315 } else {
2316 assert(fd != -1);
2317 }
2318
2319 return fd;
2320 }
2321
2322 /* Please update hmp-commands.hx when adding or changing commands */
2323 static mon_cmd_t info_cmds[] = {
2324 #include "hmp-commands-info.h"
2325 { NULL, NULL, },
2326 };
2327
2328 /* mon_cmds and info_cmds would be sorted at runtime */
2329 static mon_cmd_t mon_cmds[] = {
2330 #include "hmp-commands.h"
2331 { NULL, NULL, },
2332 };
2333
2334 /*******************************************************************/
2335
2336 static const char *pch;
2337 static sigjmp_buf expr_env;
2338
2339
2340 static void GCC_FMT_ATTR(2, 3) QEMU_NORETURN
2341 expr_error(Monitor *mon, const char *fmt, ...)
2342 {
2343 va_list ap;
2344 va_start(ap, fmt);
2345 monitor_vprintf(mon, fmt, ap);
2346 monitor_printf(mon, "\n");
2347 va_end(ap);
2348 siglongjmp(expr_env, 1);
2349 }
2350
2351 /* return 0 if OK, -1 if not found */
2352 static int get_monitor_def(target_long *pval, const char *name)
2353 {
2354 const MonitorDef *md = target_monitor_defs();
2355 CPUState *cs = mon_get_cpu();
2356 void *ptr;
2357 uint64_t tmp = 0;
2358 int ret;
2359
2360 if (cs == NULL || md == NULL) {
2361 return -1;
2362 }
2363
2364 for(; md->name != NULL; md++) {
2365 if (compare_cmd(name, md->name)) {
2366 if (md->get_value) {
2367 *pval = md->get_value(md, md->offset);
2368 } else {
2369 CPUArchState *env = mon_get_cpu_env();
2370 ptr = (uint8_t *)env + md->offset;
2371 switch(md->type) {
2372 case MD_I32:
2373 *pval = *(int32_t *)ptr;
2374 break;
2375 case MD_TLONG:
2376 *pval = *(target_long *)ptr;
2377 break;
2378 default:
2379 *pval = 0;
2380 break;
2381 }
2382 }
2383 return 0;
2384 }
2385 }
2386
2387 ret = target_get_monitor_def(cs, name, &tmp);
2388 if (!ret) {
2389 *pval = (target_long) tmp;
2390 }
2391
2392 return ret;
2393 }
2394
2395 static void next(void)
2396 {
2397 if (*pch != '\0') {
2398 pch++;
2399 while (qemu_isspace(*pch))
2400 pch++;
2401 }
2402 }
2403
2404 static int64_t expr_sum(Monitor *mon);
2405
2406 static int64_t expr_unary(Monitor *mon)
2407 {
2408 int64_t n;
2409 char *p;
2410 int ret;
2411
2412 switch(*pch) {
2413 case '+':
2414 next();
2415 n = expr_unary(mon);
2416 break;
2417 case '-':
2418 next();
2419 n = -expr_unary(mon);
2420 break;
2421 case '~':
2422 next();
2423 n = ~expr_unary(mon);
2424 break;
2425 case '(':
2426 next();
2427 n = expr_sum(mon);
2428 if (*pch != ')') {
2429 expr_error(mon, "')' expected");
2430 }
2431 next();
2432 break;
2433 case '\'':
2434 pch++;
2435 if (*pch == '\0')
2436 expr_error(mon, "character constant expected");
2437 n = *pch;
2438 pch++;
2439 if (*pch != '\'')
2440 expr_error(mon, "missing terminating \' character");
2441 next();
2442 break;
2443 case '$':
2444 {
2445 char buf[128], *q;
2446 target_long reg=0;
2447
2448 pch++;
2449 q = buf;
2450 while ((*pch >= 'a' && *pch <= 'z') ||
2451 (*pch >= 'A' && *pch <= 'Z') ||
2452 (*pch >= '0' && *pch <= '9') ||
2453 *pch == '_' || *pch == '.') {
2454 if ((q - buf) < sizeof(buf) - 1)
2455 *q++ = *pch;
2456 pch++;
2457 }
2458 while (qemu_isspace(*pch))
2459 pch++;
2460 *q = 0;
2461 ret = get_monitor_def(&reg, buf);
2462 if (ret < 0)
2463 expr_error(mon, "unknown register");
2464 n = reg;
2465 }
2466 break;
2467 case '\0':
2468 expr_error(mon, "unexpected end of expression");
2469 n = 0;
2470 break;
2471 default:
2472 errno = 0;
2473 n = strtoull(pch, &p, 0);
2474 if (errno == ERANGE) {
2475 expr_error(mon, "number too large");
2476 }
2477 if (pch == p) {
2478 expr_error(mon, "invalid char '%c' in expression", *p);
2479 }
2480 pch = p;
2481 while (qemu_isspace(*pch))
2482 pch++;
2483 break;
2484 }
2485 return n;
2486 }
2487
2488
2489 static int64_t expr_prod(Monitor *mon)
2490 {
2491 int64_t val, val2;
2492 int op;
2493
2494 val = expr_unary(mon);
2495 for(;;) {
2496 op = *pch;
2497 if (op != '*' && op != '/' && op != '%')
2498 break;
2499 next();
2500 val2 = expr_unary(mon);
2501 switch(op) {
2502 default:
2503 case '*':
2504 val *= val2;
2505 break;
2506 case '/':
2507 case '%':
2508 if (val2 == 0)
2509 expr_error(mon, "division by zero");
2510 if (op == '/')
2511 val /= val2;
2512 else
2513 val %= val2;
2514 break;
2515 }
2516 }
2517 return val;
2518 }
2519
2520 static int64_t expr_logic(Monitor *mon)
2521 {
2522 int64_t val, val2;
2523 int op;
2524
2525 val = expr_prod(mon);
2526 for(;;) {
2527 op = *pch;
2528 if (op != '&' && op != '|' && op != '^')
2529 break;
2530 next();
2531 val2 = expr_prod(mon);
2532 switch(op) {
2533 default:
2534 case '&':
2535 val &= val2;
2536 break;
2537 case '|':
2538 val |= val2;
2539 break;
2540 case '^':
2541 val ^= val2;
2542 break;
2543 }
2544 }
2545 return val;
2546 }
2547
2548 static int64_t expr_sum(Monitor *mon)
2549 {
2550 int64_t val, val2;
2551 int op;
2552
2553 val = expr_logic(mon);
2554 for(;;) {
2555 op = *pch;
2556 if (op != '+' && op != '-')
2557 break;
2558 next();
2559 val2 = expr_logic(mon);
2560 if (op == '+')
2561 val += val2;
2562 else
2563 val -= val2;
2564 }
2565 return val;
2566 }
2567
2568 static int get_expr(Monitor *mon, int64_t *pval, const char **pp)
2569 {
2570 pch = *pp;
2571 if (sigsetjmp(expr_env, 0)) {
2572 *pp = pch;
2573 return -1;
2574 }
2575 while (qemu_isspace(*pch))
2576 pch++;
2577 *pval = expr_sum(mon);
2578 *pp = pch;
2579 return 0;
2580 }
2581
2582 static int get_double(Monitor *mon, double *pval, const char **pp)
2583 {
2584 const char *p = *pp;
2585 char *tailp;
2586 double d;
2587
2588 d = strtod(p, &tailp);
2589 if (tailp == p) {
2590 monitor_printf(mon, "Number expected\n");
2591 return -1;
2592 }
2593 if (d != d || d - d != 0) {
2594 /* NaN or infinity */
2595 monitor_printf(mon, "Bad number\n");
2596 return -1;
2597 }
2598 *pval = d;
2599 *pp = tailp;
2600 return 0;
2601 }
2602
2603 /*
2604 * Store the command-name in cmdname, and return a pointer to
2605 * the remaining of the command string.
2606 */
2607 static const char *get_command_name(const char *cmdline,
2608 char *cmdname, size_t nlen)
2609 {
2610 size_t len;
2611 const char *p, *pstart;
2612
2613 p = cmdline;
2614 while (qemu_isspace(*p))
2615 p++;
2616 if (*p == '\0')
2617 return NULL;
2618 pstart = p;
2619 while (*p != '\0' && *p != '/' && !qemu_isspace(*p))
2620 p++;
2621 len = p - pstart;
2622 if (len > nlen - 1)
2623 len = nlen - 1;
2624 memcpy(cmdname, pstart, len);
2625 cmdname[len] = '\0';
2626 return p;
2627 }
2628
2629 /**
2630 * Read key of 'type' into 'key' and return the current
2631 * 'type' pointer.
2632 */
2633 static char *key_get_info(const char *type, char **key)
2634 {
2635 size_t len;
2636 char *p, *str;
2637
2638 if (*type == ',')
2639 type++;
2640
2641 p = strchr(type, ':');
2642 if (!p) {
2643 *key = NULL;
2644 return NULL;
2645 }
2646 len = p - type;
2647
2648 str = g_malloc(len + 1);
2649 memcpy(str, type, len);
2650 str[len] = '\0';
2651
2652 *key = str;
2653 return ++p;
2654 }
2655
2656 static int default_fmt_format = 'x';
2657 static int default_fmt_size = 4;
2658
2659 static int is_valid_option(const char *c, const char *typestr)
2660 {
2661 char option[3];
2662
2663 option[0] = '-';
2664 option[1] = *c;
2665 option[2] = '\0';
2666
2667 typestr = strstr(typestr, option);
2668 return (typestr != NULL);
2669 }
2670
2671 static const mon_cmd_t *search_dispatch_table(const mon_cmd_t *disp_table,
2672 const char *cmdname)
2673 {
2674 const mon_cmd_t *cmd;
2675
2676 for (cmd = disp_table; cmd->name != NULL; cmd++) {
2677 if (compare_cmd(cmdname, cmd->name)) {
2678 return cmd;
2679 }
2680 }
2681
2682 return NULL;
2683 }
2684
2685 /*
2686 * Parse command name from @cmdp according to command table @table.
2687 * If blank, return NULL.
2688 * Else, if no valid command can be found, report to @mon, and return
2689 * NULL.
2690 * Else, change @cmdp to point right behind the name, and return its
2691 * command table entry.
2692 * Do not assume the return value points into @table! It doesn't when
2693 * the command is found in a sub-command table.
2694 */
2695 static const mon_cmd_t *monitor_parse_command(Monitor *mon,
2696 const char **cmdp,
2697 mon_cmd_t *table)
2698 {
2699 const char *p;
2700 const mon_cmd_t *cmd;
2701 char cmdname[256];
2702
2703 /* extract the command name */
2704 p = get_command_name(*cmdp, cmdname, sizeof(cmdname));
2705 if (!p)
2706 return NULL;
2707
2708 cmd = search_dispatch_table(table, cmdname);
2709 if (!cmd) {
2710 monitor_printf(mon, "unknown command: '%.*s'\n",
2711 (int)(p - *cmdp), *cmdp);
2712 return NULL;
2713 }
2714
2715 /* filter out following useless space */
2716 while (qemu_isspace(*p)) {
2717 p++;
2718 }
2719
2720 *cmdp = p;
2721 /* search sub command */
2722 if (cmd->sub_table != NULL && *p != '\0') {
2723 return monitor_parse_command(mon, cmdp, cmd->sub_table);
2724 }
2725
2726 return cmd;
2727 }
2728
2729 /*
2730 * Parse arguments for @cmd.
2731 * If it can't be parsed, report to @mon, and return NULL.
2732 * Else, insert command arguments into a QDict, and return it.
2733 * Note: On success, caller has to free the QDict structure.
2734 */
2735
2736 static QDict *monitor_parse_arguments(Monitor *mon,
2737 const char **endp,
2738 const mon_cmd_t *cmd)
2739 {
2740 const char *typestr;
2741 char *key;
2742 int c;
2743 const char *p = *endp;
2744 char buf[1024];
2745 QDict *qdict = qdict_new();
2746
2747 /* parse the parameters */
2748 typestr = cmd->args_type;
2749 for(;;) {
2750 typestr = key_get_info(typestr, &key);
2751 if (!typestr)
2752 break;
2753 c = *typestr;
2754 typestr++;
2755 switch(c) {
2756 case 'F':
2757 case 'B':
2758 case 's':
2759 {
2760 int ret;
2761
2762 while (qemu_isspace(*p))
2763 p++;
2764 if (*typestr == '?') {
2765 typestr++;
2766 if (*p == '\0') {
2767 /* no optional string: NULL argument */
2768 break;
2769 }
2770 }
2771 ret = get_str(buf, sizeof(buf), &p);
2772 if (ret < 0) {
2773 switch(c) {
2774 case 'F':
2775 monitor_printf(mon, "%s: filename expected\n",
2776 cmd->name);
2777 break;
2778 case 'B':
2779 monitor_printf(mon, "%s: block device name expected\n",
2780 cmd->name);
2781 break;
2782 default:
2783 monitor_printf(mon, "%s: string expected\n", cmd->name);
2784 break;
2785 }
2786 goto fail;
2787 }
2788 qdict_put_str(qdict, key, buf);
2789 }
2790 break;
2791 case 'O':
2792 {
2793 QemuOptsList *opts_list;
2794 QemuOpts *opts;
2795
2796 opts_list = qemu_find_opts(key);
2797 if (!opts_list || opts_list->desc->name) {
2798 goto bad_type;
2799 }
2800 while (qemu_isspace(*p)) {
2801 p++;
2802 }
2803 if (!*p)
2804 break;
2805 if (get_str(buf, sizeof(buf), &p) < 0) {
2806 goto fail;
2807 }
2808 opts = qemu_opts_parse_noisily(opts_list, buf, true);
2809 if (!opts) {
2810 goto fail;
2811 }
2812 qemu_opts_to_qdict(opts, qdict);
2813 qemu_opts_del(opts);
2814 }
2815 break;
2816 case '/':
2817 {
2818 int count, format, size;
2819
2820 while (qemu_isspace(*p))
2821 p++;
2822 if (*p == '/') {
2823 /* format found */
2824 p++;
2825 count = 1;
2826 if (qemu_isdigit(*p)) {
2827 count = 0;
2828 while (qemu_isdigit(*p)) {
2829 count = count * 10 + (*p - '0');
2830 p++;
2831 }
2832 }
2833 size = -1;
2834 format = -1;
2835 for(;;) {
2836 switch(*p) {
2837 case 'o':
2838 case 'd':
2839 case 'u':
2840 case 'x':
2841 case 'i':
2842 case 'c':
2843 format = *p++;
2844 break;
2845 case 'b':
2846 size = 1;
2847 p++;
2848 break;
2849 case 'h':
2850 size = 2;
2851 p++;
2852 break;
2853 case 'w':
2854 size = 4;
2855 p++;
2856 break;
2857 case 'g':
2858 case 'L':
2859 size = 8;
2860 p++;
2861 break;
2862 default:
2863 goto next;
2864 }
2865 }
2866 next:
2867 if (*p != '\0' && !qemu_isspace(*p)) {
2868 monitor_printf(mon, "invalid char in format: '%c'\n",
2869 *p);
2870 goto fail;
2871 }
2872 if (format < 0)
2873 format = default_fmt_format;
2874 if (format != 'i') {
2875 /* for 'i', not specifying a size gives -1 as size */
2876 if (size < 0)
2877 size = default_fmt_size;
2878 default_fmt_size = size;
2879 }
2880 default_fmt_format = format;
2881 } else {
2882 count = 1;
2883 format = default_fmt_format;
2884 if (format != 'i') {
2885 size = default_fmt_size;
2886 } else {
2887 size = -1;
2888 }
2889 }
2890 qdict_put_int(qdict, "count", count);
2891 qdict_put_int(qdict, "format", format);
2892 qdict_put_int(qdict, "size", size);
2893 }
2894 break;
2895 case 'i':
2896 case 'l':
2897 case 'M':
2898 {
2899 int64_t val;
2900
2901 while (qemu_isspace(*p))
2902 p++;
2903 if (*typestr == '?' || *typestr == '.') {
2904 if (*typestr == '?') {
2905 if (*p == '\0') {
2906 typestr++;
2907 break;
2908 }
2909 } else {
2910 if (*p == '.') {
2911 p++;
2912 while (qemu_isspace(*p))
2913 p++;
2914 } else {
2915 typestr++;
2916 break;
2917 }
2918 }
2919 typestr++;
2920 }
2921 if (get_expr(mon, &val, &p))
2922 goto fail;
2923 /* Check if 'i' is greater than 32-bit */
2924 if ((c == 'i') && ((val >> 32) & 0xffffffff)) {
2925 monitor_printf(mon, "\'%s\' has failed: ", cmd->name);
2926 monitor_printf(mon, "integer is for 32-bit values\n");
2927 goto fail;
2928 } else if (c == 'M') {
2929 if (val < 0) {
2930 monitor_printf(mon, "enter a positive value\n");
2931 goto fail;
2932 }
2933 val <<= 20;
2934 }
2935 qdict_put_int(qdict, key, val);
2936 }
2937 break;
2938 case 'o':
2939 {
2940 int ret;
2941 uint64_t val;
2942 char *end;
2943
2944 while (qemu_isspace(*p)) {
2945 p++;
2946 }
2947 if (*typestr == '?') {
2948 typestr++;
2949 if (*p == '\0') {
2950 break;
2951 }
2952 }
2953 ret = qemu_strtosz_MiB(p, &end, &val);
2954 if (ret < 0 || val > INT64_MAX) {
2955 monitor_printf(mon, "invalid size\n");
2956 goto fail;
2957 }
2958 qdict_put_int(qdict, key, val);
2959 p = end;
2960 }
2961 break;
2962 case 'T':
2963 {
2964 double val;
2965
2966 while (qemu_isspace(*p))
2967 p++;
2968 if (*typestr == '?') {
2969 typestr++;
2970 if (*p == '\0') {
2971 break;
2972 }
2973 }
2974 if (get_double(mon, &val, &p) < 0) {
2975 goto fail;
2976 }
2977 if (p[0] && p[1] == 's') {
2978 switch (*p) {
2979 case 'm':
2980 val /= 1e3; p += 2; break;
2981 case 'u':
2982 val /= 1e6; p += 2; break;
2983 case 'n':
2984 val /= 1e9; p += 2; break;
2985 }
2986 }
2987 if (*p && !qemu_isspace(*p)) {
2988 monitor_printf(mon, "Unknown unit suffix\n");
2989 goto fail;
2990 }
2991 qdict_put(qdict, key, qnum_from_double(val));
2992 }
2993 break;
2994 case 'b':
2995 {
2996 const char *beg;
2997 bool val;
2998
2999 while (qemu_isspace(*p)) {
3000 p++;
3001 }
3002 beg = p;
3003 while (qemu_isgraph(*p)) {
3004 p++;
3005 }
3006 if (p - beg == 2 && !memcmp(beg, "on", p - beg)) {
3007 val = true;
3008 } else if (p - beg == 3 && !memcmp(beg, "off", p - beg)) {
3009 val = false;
3010 } else {
3011 monitor_printf(mon, "Expected 'on' or 'off'\n");
3012 goto fail;
3013 }
3014 qdict_put_bool(qdict, key, val);
3015 }
3016 break;
3017 case '-':
3018 {
3019 const char *tmp = p;
3020 int skip_key = 0;
3021 /* option */
3022
3023 c = *typestr++;
3024 if (c == '\0')
3025 goto bad_type;
3026 while (qemu_isspace(*p))
3027 p++;
3028 if (*p == '-') {
3029 p++;
3030 if(c != *p) {
3031 if(!is_valid_option(p, typestr)) {
3032
3033 monitor_printf(mon, "%s: unsupported option -%c\n",
3034 cmd->name, *p);
3035 goto fail;
3036 } else {
3037 skip_key = 1;
3038 }
3039 }
3040 if(skip_key) {
3041 p = tmp;
3042 } else {
3043 /* has option */
3044 p++;
3045 qdict_put_bool(qdict, key, true);
3046 }
3047 }
3048 }
3049 break;
3050 case 'S':
3051 {
3052 /* package all remaining string */
3053 int len;
3054
3055 while (qemu_isspace(*p)) {
3056 p++;
3057 }
3058 if (*typestr == '?') {
3059 typestr++;
3060 if (*p == '\0') {
3061 /* no remaining string: NULL argument */
3062 break;
3063 }
3064 }
3065 len = strlen(p);
3066 if (len <= 0) {
3067 monitor_printf(mon, "%s: string expected\n",
3068 cmd->name);
3069 goto fail;
3070 }
3071 qdict_put_str(qdict, key, p);
3072 p += len;
3073 }
3074 break;
3075 default:
3076 bad_type:
3077 monitor_printf(mon, "%s: unknown type '%c'\n", cmd->name, c);
3078 goto fail;
3079 }
3080 g_free(key);
3081 key = NULL;
3082 }
3083 /* check that all arguments were parsed */
3084 while (qemu_isspace(*p))
3085 p++;
3086 if (*p != '\0') {
3087 monitor_printf(mon, "%s: extraneous characters at the end of line\n",
3088 cmd->name);
3089 goto fail;
3090 }
3091
3092 return qdict;
3093
3094 fail:
3095 QDECREF(qdict);
3096 g_free(key);
3097 return NULL;
3098 }
3099
3100 static void handle_hmp_command(Monitor *mon, const char *cmdline)
3101 {
3102 QDict *qdict;
3103 const mon_cmd_t *cmd;
3104
3105 trace_handle_hmp_command(mon, cmdline);
3106
3107 cmd = monitor_parse_command(mon, &cmdline, mon->cmd_table);
3108 if (!cmd) {
3109 return;
3110 }
3111
3112 qdict = monitor_parse_arguments(mon, &cmdline, cmd);
3113 if (!qdict) {
3114 monitor_printf(mon, "Try \"help %s\" for more information\n",
3115 cmd->name);
3116 return;
3117 }
3118
3119 cmd->cmd(mon, qdict);
3120 QDECREF(qdict);
3121 }
3122
3123 static void cmd_completion(Monitor *mon, const char *name, const char *list)
3124 {
3125 const char *p, *pstart;
3126 char cmd[128];
3127 int len;
3128
3129 p = list;
3130 for(;;) {
3131 pstart = p;
3132 p = strchr(p, '|');
3133 if (!p)
3134 p = pstart + strlen(pstart);
3135 len = p - pstart;
3136 if (len > sizeof(cmd) - 2)
3137 len = sizeof(cmd) - 2;
3138 memcpy(cmd, pstart, len);
3139 cmd[len] = '\0';
3140 if (name[0] == '\0' || !strncmp(name, cmd, strlen(name))) {
3141 readline_add_completion(mon->rs, cmd);
3142 }
3143 if (*p == '\0')
3144 break;
3145 p++;
3146 }
3147 }
3148
3149 static void file_completion(Monitor *mon, const char *input)
3150 {
3151 DIR *ffs;
3152 struct dirent *d;
3153 char path[1024];
3154 char file[1024], file_prefix[1024];
3155 int input_path_len;
3156 const char *p;
3157
3158 p = strrchr(input, '/');
3159 if (!p) {
3160 input_path_len = 0;
3161 pstrcpy(file_prefix, sizeof(file_prefix), input);
3162 pstrcpy(path, sizeof(path), ".");
3163 } else {
3164 input_path_len = p - input + 1;
3165 memcpy(path, input, input_path_len);
3166 if (input_path_len > sizeof(path) - 1)
3167 input_path_len = sizeof(path) - 1;
3168 path[input_path_len] = '\0';
3169 pstrcpy(file_prefix, sizeof(file_prefix), p + 1);
3170 }
3171
3172 ffs = opendir(path);
3173 if (!ffs)
3174 return;
3175 for(;;) {
3176 struct stat sb;
3177 d = readdir(ffs);
3178 if (!d)
3179 break;
3180
3181 if (strcmp(d->d_name, ".") == 0 || strcmp(d->d_name, "..") == 0) {
3182 continue;
3183 }
3184
3185 if (strstart(d->d_name, file_prefix, NULL)) {
3186 memcpy(file, input, input_path_len);
3187 if (input_path_len < sizeof(file))
3188 pstrcpy(file + input_path_len, sizeof(file) - input_path_len,
3189 d->d_name);
3190 /* stat the file to find out if it's a directory.
3191 * In that case add a slash to speed up typing long paths
3192 */
3193 if (stat(file, &sb) == 0 && S_ISDIR(sb.st_mode)) {
3194 pstrcat(file, sizeof(file), "/");
3195 }
3196 readline_add_completion(mon->rs, file);
3197 }
3198 }
3199 closedir(ffs);
3200 }
3201
3202 static const char *next_arg_type(const char *typestr)
3203 {
3204 const char *p = strchr(typestr, ':');
3205 return (p != NULL ? ++p : typestr);
3206 }
3207
3208 static void add_completion_option(ReadLineState *rs, const char *str,
3209 const char *option)
3210 {
3211 if (!str || !option) {
3212 return;
3213 }
3214 if (!strncmp(option, str, strlen(str))) {
3215 readline_add_completion(rs, option);
3216 }
3217 }
3218
3219 void chardev_add_completion(ReadLineState *rs, int nb_args, const char *str)
3220 {
3221 size_t len;
3222 ChardevBackendInfoList *list, *start;
3223
3224 if (nb_args != 2) {
3225 return;
3226 }
3227 len = strlen(str);
3228 readline_set_completion_index(rs, len);
3229
3230 start = list = qmp_query_chardev_backends(NULL);
3231 while (list) {
3232 const char *chr_name = list->value->name;
3233
3234 if (!strncmp(chr_name, str, len)) {
3235 readline_add_completion(rs, chr_name);
3236 }
3237 list = list->next;
3238 }
3239 qapi_free_ChardevBackendInfoList(start);
3240 }
3241
3242 void netdev_add_completion(ReadLineState *rs, int nb_args, const char *str)
3243 {
3244 size_t len;
3245 int i;
3246
3247 if (nb_args != 2) {
3248 return;
3249 }
3250 len = strlen(str);
3251 readline_set_completion_index(rs, len);
3252 for (i = 0; NetClientDriver_lookup[i]; i++) {
3253 add_completion_option(rs, str, NetClientDriver_lookup[i]);
3254 }
3255 }
3256
3257 void device_add_completion(ReadLineState *rs, int nb_args, const char *str)
3258 {
3259 GSList *list, *elt;
3260 size_t len;
3261
3262 if (nb_args != 2) {
3263 return;
3264 }
3265
3266 len = strlen(str);
3267 readline_set_completion_index(rs, len);
3268 list = elt = object_class_get_list(TYPE_DEVICE, false);
3269 while (elt) {
3270 const char *name;
3271 DeviceClass *dc = OBJECT_CLASS_CHECK(DeviceClass, elt->data,
3272 TYPE_DEVICE);
3273 name = object_class_get_name(OBJECT_CLASS(dc));
3274
3275 if (dc->user_creatable
3276 && !strncmp(name, str, len)) {
3277 readline_add_completion(rs, name);
3278 }
3279 elt = elt->next;
3280 }
3281 g_slist_free(list);
3282 }
3283
3284 void object_add_completion(ReadLineState *rs, int nb_args, const char *str)
3285 {
3286 GSList *list, *elt;
3287 size_t len;
3288
3289 if (nb_args != 2) {
3290 return;
3291 }
3292
3293 len = strlen(str);
3294 readline_set_completion_index(rs, len);
3295 list = elt = object_class_get_list(TYPE_USER_CREATABLE, false);
3296 while (elt) {
3297 const char *name;
3298
3299 name = object_class_get_name(OBJECT_CLASS(elt->data));
3300 if (!strncmp(name, str, len) && strcmp(name, TYPE_USER_CREATABLE)) {
3301 readline_add_completion(rs, name);
3302 }
3303 elt = elt->next;
3304 }
3305 g_slist_free(list);
3306 }
3307
3308 static void peripheral_device_del_completion(ReadLineState *rs,
3309 const char *str, size_t len)
3310 {
3311 Object *peripheral = container_get(qdev_get_machine(), "/peripheral");
3312 GSList *list, *item;
3313
3314 list = qdev_build_hotpluggable_device_list(peripheral);
3315 if (!list) {
3316 return;
3317 }
3318
3319 for (item = list; item; item = g_slist_next(item)) {
3320 DeviceState *dev = item->data;
3321
3322 if (dev->id && !strncmp(str, dev->id, len)) {
3323 readline_add_completion(rs, dev->id);
3324 }
3325 }
3326
3327 g_slist_free(list);
3328 }
3329
3330 void chardev_remove_completion(ReadLineState *rs, int nb_args, const char *str)
3331 {
3332 size_t len;
3333 ChardevInfoList *list, *start;
3334
3335 if (nb_args != 2) {
3336 return;
3337 }
3338 len = strlen(str);
3339 readline_set_completion_index(rs, len);
3340
3341 start = list = qmp_query_chardev(NULL);
3342 while (list) {
3343 ChardevInfo *chr = list->value;
3344
3345 if (!strncmp(chr->label, str, len)) {
3346 readline_add_completion(rs, chr->label);
3347 }
3348 list = list->next;
3349 }
3350 qapi_free_ChardevInfoList(start);
3351 }
3352
3353 static void ringbuf_completion(ReadLineState *rs, const char *str)
3354 {
3355 size_t len;
3356 ChardevInfoList *list, *start;
3357
3358 len = strlen(str);
3359 readline_set_completion_index(rs, len);
3360
3361 start = list = qmp_query_chardev(NULL);
3362 while (list) {
3363 ChardevInfo *chr_info = list->value;
3364
3365 if (!strncmp(chr_info->label, str, len)) {
3366 Chardev *chr = qemu_chr_find(chr_info->label);
3367 if (chr && CHARDEV_IS_RINGBUF(chr)) {
3368 readline_add_completion(rs, chr_info->label);
3369 }
3370 }
3371 list = list->next;
3372 }
3373 qapi_free_ChardevInfoList(start);
3374 }
3375
3376 void ringbuf_write_completion(ReadLineState *rs, int nb_args, const char *str)
3377 {
3378 if (nb_args != 2) {
3379 return;
3380 }
3381 ringbuf_completion(rs, str);
3382 }
3383
3384 void device_del_completion(ReadLineState *rs, int nb_args, const char *str)
3385 {
3386 size_t len;
3387
3388 if (nb_args != 2) {
3389 return;
3390 }
3391
3392 len = strlen(str);
3393 readline_set_completion_index(rs, len);
3394 peripheral_device_del_completion(rs, str, len);
3395 }
3396
3397 void object_del_completion(ReadLineState *rs, int nb_args, const char *str)
3398 {
3399 ObjectPropertyInfoList *list, *start;
3400 size_t len;
3401
3402 if (nb_args != 2) {
3403 return;
3404 }
3405 len = strlen(str);
3406 readline_set_completion_index(rs, len);
3407
3408 start = list = qmp_qom_list("/objects", NULL);
3409 while (list) {
3410 ObjectPropertyInfo *info = list->value;
3411
3412 if (!strncmp(info->type, "child<", 5)
3413 && !strncmp(info->name, str, len)) {
3414 readline_add_completion(rs, info->name);
3415 }
3416 list = list->next;
3417 }
3418 qapi_free_ObjectPropertyInfoList(start);
3419 }
3420
3421 void sendkey_completion(ReadLineState *rs, int nb_args, const char *str)
3422 {
3423 int i;
3424 char *sep;
3425 size_t len;
3426
3427 if (nb_args != 2) {
3428 return;
3429 }
3430 sep = strrchr(str, '-');
3431 if (sep) {
3432 str = sep + 1;
3433 }
3434 len = strlen(str);
3435 readline_set_completion_index(rs, len);
3436 for (i = 0; i < Q_KEY_CODE__MAX; i++) {
3437 if (!strncmp(str, QKeyCode_lookup[i], len)) {
3438 readline_add_completion(rs, QKeyCode_lookup[i]);
3439 }
3440 }
3441 }
3442
3443 void set_link_completion(ReadLineState *rs, int nb_args, const char *str)
3444 {
3445 size_t len;
3446
3447 len = strlen(str);
3448 readline_set_completion_index(rs, len);
3449 if (nb_args == 2) {
3450 NetClientState *ncs[MAX_QUEUE_NUM];
3451 int count, i;
3452 count = qemu_find_net_clients_except(NULL, ncs,
3453 NET_CLIENT_DRIVER_NONE,
3454 MAX_QUEUE_NUM);
3455 for (i = 0; i < MIN(count, MAX_QUEUE_NUM); i++) {
3456 const char *name = ncs[i]->name;
3457 if (!strncmp(str, name, len)) {
3458 readline_add_completion(rs, name);
3459 }
3460 }
3461 } else if (nb_args == 3) {
3462 add_completion_option(rs, str, "on");
3463 add_completion_option(rs, str, "off");
3464 }
3465 }
3466
3467 void netdev_del_completion(ReadLineState *rs, int nb_args, const char *str)
3468 {
3469 int len, count, i;
3470 NetClientState *ncs[MAX_QUEUE_NUM];
3471
3472 if (nb_args != 2) {
3473 return;
3474 }
3475
3476 len = strlen(str);
3477 readline_set_completion_index(rs, len);
3478 count = qemu_find_net_clients_except(NULL, ncs, NET_CLIENT_DRIVER_NIC,
3479 MAX_QUEUE_NUM);
3480 for (i = 0; i < MIN(count, MAX_QUEUE_NUM); i++) {
3481 QemuOpts *opts;
3482 const char *name = ncs[i]->name;
3483 if (strncmp(str, name, len)) {
3484 continue;
3485 }
3486 opts = qemu_opts_find(qemu_find_opts_err("netdev", NULL), name);
3487 if (opts) {
3488 readline_add_completion(rs, name);
3489 }
3490 }
3491 }
3492
3493 void info_trace_events_completion(ReadLineState *rs, int nb_args, const char *str)
3494 {
3495 size_t len;
3496
3497 len = strlen(str);
3498 readline_set_completion_index(rs, len);
3499 if (nb_args == 2) {
3500 TraceEventIter iter;
3501 TraceEvent *ev;
3502 char *pattern = g_strdup_printf("%s*", str);
3503 trace_event_iter_init(&iter, pattern);
3504 while ((ev = trace_event_iter_next(&iter)) != NULL) {
3505 readline_add_completion(rs, trace_event_get_name(ev));
3506 }
3507 g_free(pattern);
3508 }
3509 }
3510
3511 void trace_event_completion(ReadLineState *rs, int nb_args, const char *str)
3512 {
3513 size_t len;
3514
3515 len = strlen(str);
3516 readline_set_completion_index(rs, len);
3517 if (nb_args == 2) {
3518 TraceEventIter iter;
3519 TraceEvent *ev;
3520 char *pattern = g_strdup_printf("%s*", str);
3521 trace_event_iter_init(&iter, pattern);
3522 while ((ev = trace_event_iter_next(&iter)) != NULL) {
3523 readline_add_completion(rs, trace_event_get_name(ev));
3524 }
3525 g_free(pattern);
3526 } else if (nb_args == 3) {
3527 add_completion_option(rs, str, "on");
3528 add_completion_option(rs, str, "off");
3529 }
3530 }
3531
3532 void watchdog_action_completion(ReadLineState *rs, int nb_args, const char *str)
3533 {
3534 int i;
3535
3536 if (nb_args != 2) {
3537 return;
3538 }
3539 readline_set_completion_index(rs, strlen(str));
3540 for (i = 0; WatchdogExpirationAction_lookup[i]; i++) {
3541 add_completion_option(rs, str, WatchdogExpirationAction_lookup[i]);
3542 }
3543 }
3544
3545 void migrate_set_capability_completion(ReadLineState *rs, int nb_args,
3546 const char *str)
3547 {
3548 size_t len;
3549
3550 len = strlen(str);
3551 readline_set_completion_index(rs, len);
3552 if (nb_args == 2) {
3553 int i;
3554 for (i = 0; i < MIGRATION_CAPABILITY__MAX; i++) {
3555 const char *name = MigrationCapability_lookup[i];
3556 if (!strncmp(str, name, len)) {
3557 readline_add_completion(rs, name);
3558 }
3559 }
3560 } else if (nb_args == 3) {
3561 add_completion_option(rs, str, "on");
3562 add_completion_option(rs, str, "off");
3563 }
3564 }
3565
3566 void migrate_set_parameter_completion(ReadLineState *rs, int nb_args,
3567 const char *str)
3568 {
3569 size_t len;
3570
3571 len = strlen(str);
3572 readline_set_completion_index(rs, len);
3573 if (nb_args == 2) {
3574 int i;
3575 for (i = 0; i < MIGRATION_PARAMETER__MAX; i++) {
3576 const char *name = MigrationParameter_lookup[i];
3577 if (!strncmp(str, name, len)) {
3578 readline_add_completion(rs, name);
3579 }
3580 }
3581 }
3582 }
3583
3584 void host_net_add_completion(ReadLineState *rs, int nb_args, const char *str)
3585 {
3586 int i;
3587 size_t len;
3588 if (nb_args != 2) {
3589 return;
3590 }
3591 len = strlen(str);
3592 readline_set_completion_index(rs, len);
3593 for (i = 0; host_net_devices[i]; i++) {
3594 if (!strncmp(host_net_devices[i], str, len)) {
3595 readline_add_completion(rs, host_net_devices[i]);
3596 }
3597 }
3598 }
3599
3600 void host_net_remove_completion(ReadLineState *rs, int nb_args, const char *str)
3601 {
3602 NetClientState *ncs[MAX_QUEUE_NUM];
3603 int count, i, len;
3604
3605 len = strlen(str);
3606 readline_set_completion_index(rs, len);
3607 if (nb_args == 2) {
3608 count = qemu_find_net_clients_except(NULL, ncs,
3609 NET_CLIENT_DRIVER_NONE,
3610 MAX_QUEUE_NUM);
3611 for (i = 0; i < MIN(count, MAX_QUEUE_NUM); i++) {
3612 int id;
3613 char name[16];
3614
3615 if (net_hub_id_for_client(ncs[i], &id)) {
3616 continue;
3617 }
3618 snprintf(name, sizeof(name), "%d", id);
3619 if (!strncmp(str, name, len)) {
3620 readline_add_completion(rs, name);
3621 }
3622 }
3623 return;
3624 } else if (nb_args == 3) {
3625 count = qemu_find_net_clients_except(NULL, ncs,
3626 NET_CLIENT_DRIVER_NIC,
3627 MAX_QUEUE_NUM);
3628 for (i = 0; i < MIN(count, MAX_QUEUE_NUM); i++) {
3629 int id;
3630 const char *name;
3631
3632 if (ncs[i]->info->type == NET_CLIENT_DRIVER_HUBPORT ||
3633 net_hub_id_for_client(ncs[i], &id)) {
3634 continue;
3635 }
3636 name = ncs[i]->name;
3637 if (!strncmp(str, name, len)) {
3638 readline_add_completion(rs, name);
3639 }
3640 }
3641 return;
3642 }
3643 }
3644
3645 static void vm_completion(ReadLineState *rs, const char *str)
3646 {
3647 size_t len;
3648 BlockDriverState *bs;
3649 BdrvNextIterator it;
3650
3651 len = strlen(str);
3652 readline_set_completion_index(rs, len);
3653
3654 for (bs = bdrv_first(&it); bs; bs = bdrv_next(&it)) {
3655 SnapshotInfoList *snapshots, *snapshot;
3656 AioContext *ctx = bdrv_get_aio_context(bs);
3657 bool ok = false;
3658
3659 aio_context_acquire(ctx);
3660 if (bdrv_can_snapshot(bs)) {
3661 ok = bdrv_query_snapshot_info_list(bs, &snapshots, NULL) == 0;
3662 }
3663 aio_context_release(ctx);
3664 if (!ok) {
3665 continue;
3666 }
3667
3668 snapshot = snapshots;
3669 while (snapshot) {
3670 char *completion = snapshot->value->name;
3671 if (!strncmp(str, completion, len)) {
3672 readline_add_completion(rs, completion);
3673 }
3674 completion = snapshot->value->id;
3675 if (!strncmp(str, completion, len)) {
3676 readline_add_completion(rs, completion);
3677 }
3678 snapshot = snapshot->next;
3679 }
3680 qapi_free_SnapshotInfoList(snapshots);
3681 }
3682
3683 }
3684
3685 void delvm_completion(ReadLineState *rs, int nb_args, const char *str)
3686 {
3687 if (nb_args == 2) {
3688 vm_completion(rs, str);
3689 }
3690 }
3691
3692 void loadvm_completion(ReadLineState *rs, int nb_args, const char *str)
3693 {
3694 if (nb_args == 2) {
3695 vm_completion(rs, str);
3696 }
3697 }
3698
3699 static void monitor_find_completion_by_table(Monitor *mon,
3700 const mon_cmd_t *cmd_table,
3701 char **args,
3702 int nb_args)
3703 {
3704 const char *cmdname;
3705 int i;
3706 const char *ptype, *str, *name;
3707 const mon_cmd_t *cmd;
3708 BlockBackend *blk = NULL;
3709
3710 if (nb_args <= 1) {
3711 /* command completion */
3712 if (nb_args == 0)
3713 cmdname = "";
3714 else
3715 cmdname = args[0];
3716 readline_set_completion_index(mon->rs, strlen(cmdname));
3717 for (cmd = cmd_table; cmd->name != NULL; cmd++) {
3718 cmd_completion(mon, cmdname, cmd->name);
3719 }
3720 } else {
3721 /* find the command */
3722 for (cmd = cmd_table; cmd->name != NULL; cmd++) {
3723 if (compare_cmd(args[0], cmd->name)) {
3724 break;
3725 }
3726 }
3727 if (!cmd->name) {
3728 return;
3729 }
3730
3731 if (cmd->sub_table) {
3732 /* do the job again */
3733 monitor_find_completion_by_table(mon, cmd->sub_table,
3734 &args[1], nb_args - 1);
3735 return;
3736 }
3737 if (cmd->command_completion) {
3738 cmd->command_completion(mon->rs, nb_args, args[nb_args - 1]);
3739 return;
3740 }
3741
3742 ptype = next_arg_type(cmd->args_type);
3743 for(i = 0; i < nb_args - 2; i++) {
3744 if (*ptype != '\0') {
3745 ptype = next_arg_type(ptype);
3746 while (*ptype == '?')
3747 ptype = next_arg_type(ptype);
3748 }
3749 }
3750 str = args[nb_args - 1];
3751 while (*ptype == '-' && ptype[1] != '\0') {
3752 ptype = next_arg_type(ptype);
3753 }
3754 switch(*ptype) {
3755 case 'F':
3756 /* file completion */
3757 readline_set_completion_index(mon->rs, strlen(str));
3758 file_completion(mon, str);
3759 break;
3760 case 'B':
3761 /* block device name completion */
3762 readline_set_completion_index(mon->rs, strlen(str));
3763 while ((blk = blk_next(blk)) != NULL) {
3764 name = blk_name(blk);
3765 if (str[0] == '\0' ||
3766 !strncmp(name, str, strlen(str))) {
3767 readline_add_completion(mon->rs, name);
3768 }
3769 }
3770 break;
3771 case 's':
3772 case 'S':
3773 if (!strcmp(cmd->name, "help|?")) {
3774 monitor_find_completion_by_table(mon, cmd_table,
3775 &args[1], nb_args - 1);
3776 }
3777 break;
3778 default:
3779 break;
3780 }
3781 }
3782 }
3783
3784 static void monitor_find_completion(void *opaque,
3785 const char *cmdline)
3786 {
3787 Monitor *mon = opaque;
3788 char *args[MAX_ARGS];
3789 int nb_args, len;
3790
3791 /* 1. parse the cmdline */
3792 if (parse_cmdline(cmdline, &nb_args, args) < 0) {
3793 return;
3794 }
3795
3796 /* if the line ends with a space, it means we want to complete the
3797 next arg */
3798 len = strlen(cmdline);
3799 if (len > 0 && qemu_isspace(cmdline[len - 1])) {
3800 if (nb_args >= MAX_ARGS) {
3801 goto cleanup;
3802 }
3803 args[nb_args++] = g_strdup("");
3804 }
3805
3806 /* 2. auto complete according to args */
3807 monitor_find_completion_by_table(mon, mon->cmd_table, args, nb_args);
3808
3809 cleanup:
3810 free_cmdline_args(args, nb_args);
3811 }
3812
3813 static int monitor_can_read(void *opaque)
3814 {
3815 Monitor *mon = opaque;
3816
3817 return (mon->suspend_cnt == 0) ? 1 : 0;
3818 }
3819
3820 static void handle_qmp_command(JSONMessageParser *parser, GQueue *tokens)
3821 {
3822 QObject *req, *rsp = NULL, *id = NULL;
3823 QDict *qdict = NULL;
3824 Monitor *mon = cur_mon;
3825 Error *err = NULL;
3826
3827 req = json_parser_parse_err(tokens, NULL, &err);
3828 if (!req && !err) {
3829 /* json_parser_parse_err() sucks: can fail without setting @err */
3830 error_setg(&err, QERR_JSON_PARSING);
3831 }
3832 if (err) {
3833 goto err_out;
3834 }
3835
3836 qdict = qobject_to_qdict(req);
3837 if (qdict) {
3838 id = qdict_get(qdict, "id");
3839 qobject_incref(id);
3840 qdict_del(qdict, "id");
3841 } /* else will fail qmp_dispatch() */
3842
3843 if (trace_event_get_state_backends(TRACE_HANDLE_QMP_COMMAND)) {
3844 QString *req_json = qobject_to_json(req);
3845 trace_handle_qmp_command(mon, qstring_get_str(req_json));
3846 QDECREF(req_json);
3847 }
3848
3849 rsp = qmp_dispatch(cur_mon->qmp.commands, req);
3850
3851 if (mon->qmp.commands == &qmp_cap_negotiation_commands) {
3852 qdict = qdict_get_qdict(qobject_to_qdict(rsp), "error");
3853 if (qdict
3854 && !g_strcmp0(qdict_get_try_str(qdict, "class"),
3855 QapiErrorClass_lookup[ERROR_CLASS_COMMAND_NOT_FOUND])) {
3856 /* Provide a more useful error message */
3857 qdict_del(qdict, "desc");
3858 qdict_put_str(qdict, "desc", "Expecting capabilities negotiation"
3859 " with 'qmp_capabilities'");
3860 }
3861 }
3862
3863 err_out:
3864 if (err) {
3865 qdict = qdict_new();
3866 qdict_put_obj(qdict, "error", qmp_build_error_object(err));
3867 error_free(err);
3868 rsp = QOBJECT(qdict);
3869 }
3870
3871 if (rsp) {
3872 if (id) {
3873 qdict_put_obj(qobject_to_qdict(rsp), "id", id);
3874 id = NULL;
3875 }
3876
3877 monitor_json_emitter(mon, rsp);
3878 }
3879
3880 qobject_decref(id);
3881 qobject_decref(rsp);
3882 qobject_decref(req);
3883 }
3884
3885 static void monitor_qmp_read(void *opaque, const uint8_t *buf, int size)
3886 {
3887 Monitor *old_mon = cur_mon;
3888
3889 cur_mon = opaque;
3890
3891 json_message_parser_feed(&cur_mon->qmp.parser, (const char *) buf, size);
3892
3893 cur_mon = old_mon;
3894 }
3895
3896 static void monitor_read(void *opaque, const uint8_t *buf, int size)
3897 {
3898 Monitor *old_mon = cur_mon;
3899 int i;
3900
3901 cur_mon = opaque;
3902
3903 if (cur_mon->rs) {
3904 for (i = 0; i < size; i++)
3905 readline_handle_byte(cur_mon->rs, buf[i]);
3906 } else {
3907 if (size == 0 || buf[size - 1] != 0)
3908 monitor_printf(cur_mon, "corrupted command\n");
3909 else
3910 handle_hmp_command(cur_mon, (char *)buf);
3911 }
3912
3913 cur_mon = old_mon;
3914 }
3915
3916 static void monitor_command_cb(void *opaque, const char *cmdline,
3917 void *readline_opaque)
3918 {
3919 Monitor *mon = opaque;
3920
3921 monitor_suspend(mon);
3922 handle_hmp_command(mon, cmdline);
3923 monitor_resume(mon);
3924 }
3925
3926 int monitor_suspend(Monitor *mon)
3927 {
3928 if (!mon->rs)
3929 return -ENOTTY;
3930 mon->suspend_cnt++;
3931 return 0;
3932 }
3933
3934 void monitor_resume(Monitor *mon)
3935 {
3936 if (!mon->rs)
3937 return;
3938 if (--mon->suspend_cnt == 0)
3939 readline_show_prompt(mon->rs);
3940 }
3941
3942 static QObject *get_qmp_greeting(void)
3943 {
3944 QObject *ver = NULL;
3945
3946 qmp_marshal_query_version(NULL, &ver, NULL);
3947
3948 return qobject_from_jsonf("{'QMP': {'version': %p, 'capabilities': []}}",
3949 ver);
3950 }
3951
3952 static void monitor_qmp_event(void *opaque, int event)
3953 {
3954 QObject *data;
3955 Monitor *mon = opaque;
3956
3957 switch (event) {
3958 case CHR_EVENT_OPENED:
3959 mon->qmp.commands = &qmp_cap_negotiation_commands;
3960 data = get_qmp_greeting();
3961 monitor_json_emitter(mon, data);
3962 qobject_decref(data);
3963 mon_refcount++;
3964 break;
3965 case CHR_EVENT_CLOSED:
3966 json_message_parser_destroy(&mon->qmp.parser);
3967 json_message_parser_init(&mon->qmp.parser, handle_qmp_command);
3968 mon_refcount--;
3969 monitor_fdsets_cleanup();
3970 break;
3971 }
3972 }
3973
3974 static void monitor_event(void *opaque, int event)
3975 {
3976 Monitor *mon = opaque;
3977
3978 switch (event) {
3979 case CHR_EVENT_MUX_IN:
3980 qemu_mutex_lock(&mon->out_lock);
3981 mon->mux_out = 0;
3982 qemu_mutex_unlock(&mon->out_lock);
3983 if (mon->reset_seen) {
3984 readline_restart(mon->rs);
3985 monitor_resume(mon);
3986 monitor_flush(mon);
3987 } else {
3988 mon->suspend_cnt = 0;
3989 }
3990 break;
3991
3992 case CHR_EVENT_MUX_OUT:
3993 if (mon->reset_seen) {
3994 if (mon->suspend_cnt == 0) {
3995 monitor_printf(mon, "\n");
3996 }
3997 monitor_flush(mon);
3998 monitor_suspend(mon);
3999 } else {
4000 mon->suspend_cnt++;
4001 }
4002 qemu_mutex_lock(&mon->out_lock);
4003 mon->mux_out = 1;
4004 qemu_mutex_unlock(&mon->out_lock);
4005 break;
4006
4007 case CHR_EVENT_OPENED:
4008 monitor_printf(mon, "QEMU %s monitor - type 'help' for more "
4009 "information\n", QEMU_VERSION);
4010 if (!mon->mux_out) {
4011 readline_restart(mon->rs);
4012 readline_show_prompt(mon->rs);
4013 }
4014 mon->reset_seen = 1;
4015 mon_refcount++;
4016 break;
4017
4018 case CHR_EVENT_CLOSED:
4019 mon_refcount--;
4020 monitor_fdsets_cleanup();
4021 break;
4022 }
4023 }
4024
4025 static int
4026 compare_mon_cmd(const void *a, const void *b)
4027 {
4028 return strcmp(((const mon_cmd_t *)a)->name,
4029 ((const mon_cmd_t *)b)->name);
4030 }
4031
4032 static void sortcmdlist(void)
4033 {
4034 int array_num;
4035 int elem_size = sizeof(mon_cmd_t);
4036
4037 array_num = sizeof(mon_cmds)/elem_size-1;
4038 qsort((void *)mon_cmds, array_num, elem_size, compare_mon_cmd);
4039
4040 array_num = sizeof(info_cmds)/elem_size-1;
4041 qsort((void *)info_cmds, array_num, elem_size, compare_mon_cmd);
4042 }
4043
4044 /* These functions just adapt the readline interface in a typesafe way. We
4045 * could cast function pointers but that discards compiler checks.
4046 */
4047 static void GCC_FMT_ATTR(2, 3) monitor_readline_printf(void *opaque,
4048 const char *fmt, ...)
4049 {
4050 va_list ap;
4051 va_start(ap, fmt);
4052 monitor_vprintf(opaque, fmt, ap);
4053 va_end(ap);
4054 }
4055
4056 static void monitor_readline_flush(void *opaque)
4057 {
4058 monitor_flush(opaque);
4059 }
4060
4061 /*
4062 * Print to current monitor if we have one, else to stderr.
4063 * TODO should return int, so callers can calculate width, but that
4064 * requires surgery to monitor_vprintf(). Left for another day.
4065 */
4066 void error_vprintf(const char *fmt, va_list ap)
4067 {
4068 if (cur_mon && !monitor_cur_is_qmp()) {
4069 monitor_vprintf(cur_mon, fmt, ap);
4070 } else {
4071 vfprintf(stderr, fmt, ap);
4072 }
4073 }
4074
4075 void error_vprintf_unless_qmp(const char *fmt, va_list ap)
4076 {
4077 if (cur_mon && !monitor_cur_is_qmp()) {
4078 monitor_vprintf(cur_mon, fmt, ap);
4079 } else if (!cur_mon) {
4080 vfprintf(stderr, fmt, ap);
4081 }
4082 }
4083
4084 static void __attribute__((constructor)) monitor_lock_init(void)
4085 {
4086 qemu_mutex_init(&monitor_lock);
4087 }
4088
4089 void monitor_init(Chardev *chr, int flags)
4090 {
4091 static int is_first_init = 1;
4092 Monitor *mon;
4093
4094 if (is_first_init) {
4095 monitor_qapi_event_init();
4096 sortcmdlist();
4097 is_first_init = 0;
4098 }
4099
4100 mon = g_malloc(sizeof(*mon));
4101 monitor_data_init(mon);
4102
4103 qemu_chr_fe_init(&mon->chr, chr, &error_abort);
4104 mon->flags = flags;
4105 if (flags & MONITOR_USE_READLINE) {
4106 mon->rs = readline_init(monitor_readline_printf,
4107 monitor_readline_flush,
4108 mon,
4109 monitor_find_completion);
4110 monitor_read_command(mon, 0);
4111 }
4112
4113 if (monitor_is_qmp(mon)) {
4114 qemu_chr_fe_set_handlers(&mon->chr, monitor_can_read, monitor_qmp_read,
4115 monitor_qmp_event, NULL, mon, NULL, true);
4116 qemu_chr_fe_set_echo(&mon->chr, true);
4117 json_message_parser_init(&mon->qmp.parser, handle_qmp_command);
4118 } else {
4119 qemu_chr_fe_set_handlers(&mon->chr, monitor_can_read, monitor_read,
4120 monitor_event, NULL, mon, NULL, true);
4121 }
4122
4123 qemu_mutex_lock(&monitor_lock);
4124 QLIST_INSERT_HEAD(&mon_list, mon, entry);
4125 qemu_mutex_unlock(&monitor_lock);
4126 }
4127
4128 void monitor_cleanup(void)
4129 {
4130 Monitor *mon, *next;
4131
4132 qemu_mutex_lock(&monitor_lock);
4133 QLIST_FOREACH_SAFE(mon, &mon_list, entry, next) {
4134 QLIST_REMOVE(mon, entry);
4135 monitor_data_destroy(mon);
4136 g_free(mon);
4137 }
4138 qemu_mutex_unlock(&monitor_lock);
4139 }
4140
4141 QemuOptsList qemu_mon_opts = {
4142 .name = "mon",
4143 .implied_opt_name = "chardev",
4144 .head = QTAILQ_HEAD_INITIALIZER(qemu_mon_opts.head),
4145 .desc = {
4146 {
4147 .name = "mode",
4148 .type = QEMU_OPT_STRING,
4149 },{
4150 .name = "chardev",
4151 .type = QEMU_OPT_STRING,
4152 },{
4153 .name = "default", /* deprecated */
4154 .type = QEMU_OPT_BOOL,
4155 },{
4156 .name = "pretty",
4157 .type = QEMU_OPT_BOOL,
4158 },
4159 { /* end of list */ }
4160 },
4161 };
4162
4163 #ifndef TARGET_I386
4164 void qmp_rtc_reset_reinjection(Error **errp)
4165 {
4166 error_setg(errp, QERR_FEATURE_DISABLED, "rtc-reset-reinjection");
4167 }
4168 #endif
4169
4170 #ifndef TARGET_S390X
4171 void qmp_dump_skeys(const char *filename, Error **errp)
4172 {
4173 error_setg(errp, QERR_FEATURE_DISABLED, "dump-skeys");
4174 }
4175 #endif
4176
4177 #ifndef TARGET_ARM
4178 GICCapabilityList *qmp_query_gic_capabilities(Error **errp)
4179 {
4180 error_setg(errp, QERR_FEATURE_DISABLED, "query-gic-capabilities");
4181 return NULL;
4182 }
4183 #endif
4184
4185 HotpluggableCPUList *qmp_query_hotpluggable_cpus(Error **errp)
4186 {
4187 MachineState *ms = MACHINE(qdev_get_machine());
4188 MachineClass *mc = MACHINE_GET_CLASS(ms);
4189
4190 if (!mc->has_hotpluggable_cpus) {
4191 error_setg(errp, QERR_FEATURE_DISABLED, "query-hotpluggable-cpus");
4192 return NULL;
4193 }
4194
4195 return machine_query_hotpluggable_cpus(ms);
4196 }
armbru's QEMU hackery