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qemu-options.hx: fix -chardev ringbuf typos
[qemu/kevin.git] / monitor.c
blob83c4edfce08edd51a845eee4d1262c1118cfb9f9
1 /*
2 * QEMU monitor
3 *
4 * Copyright (c) 2003-2004 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24 #include "qemu/osdep.h"
25 #include <dirent.h>
26 #include "qemu-common.h"
27 #include "cpu.h"
28 #include "hw/hw.h"
29 #include "monitor/qdev.h"
30 #include "hw/usb.h"
31 #include "hw/i386/pc.h"
32 #include "hw/pci/pci.h"
33 #include "sysemu/watchdog.h"
34 #include "hw/loader.h"
35 #include "exec/gdbstub.h"
36 #include "net/net.h"
37 #include "net/slirp.h"
38 #include "sysemu/char.h"
39 #include "ui/qemu-spice.h"
40 #include "sysemu/sysemu.h"
41 #include "sysemu/numa.h"
42 #include "monitor/monitor.h"
43 #include "qemu/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 "migration/migration.h"
53 #include "sysemu/kvm.h"
54 #include "qemu/acl.h"
55 #include "sysemu/tpm.h"
56 #include "qapi/qmp/qerror.h"
57 #include "qapi/qmp/types.h"
58 #include "qapi/qmp/qjson.h"
59 #include "qapi/qmp/json-streamer.h"
60 #include "qapi/qmp/json-parser.h"
61 #include "qom/object_interfaces.h"
62 #include "cpu.h"
63 #include "trace.h"
64 #include "trace/control.h"
65 #include "monitor/hmp-target.h"
66 #ifdef CONFIG_TRACE_SIMPLE
67 #include "trace/simple.h"
68 #endif
69 #include "exec/memory.h"
70 #include "exec/exec-all.h"
71 #include "qemu/log.h"
72 #include "qmp-commands.h"
73 #include "hmp.h"
74 #include "qemu/thread.h"
75 #include "block/qapi.h"
76 #include "qapi/qmp-event.h"
77 #include "qapi-event.h"
78 #include "qmp-introspect.h"
79 #include "sysemu/block-backend.h"
80 #include "sysemu/qtest.h"
81 #include "qemu/cutils.h"
82 #include "qapi/qmp/dispatch.h"
83
84 /* for hmp_info_irq/pic */
85 #if defined(TARGET_SPARC)
86 #include "hw/sparc/sun4m.h"
87 #endif
88 #include "hw/lm32/lm32_pic.h"
89
90 #if defined(TARGET_S390X)
91 #include "hw/s390x/storage-keys.h"
92 #endif
93
94 /*
95 * Supported types:
96 *
97 * 'F' filename
98 * 'B' block device name
99 * 's' string (accept optional quote)
100 * 'S' it just appends the rest of the string (accept optional quote)
101 * 'O' option string of the form NAME=VALUE,...
102 * parsed according to QemuOptsList given by its name
103 * Example: 'device:O' uses qemu_device_opts.
104 * Restriction: only lists with empty desc are supported
105 * TODO lift the restriction
106 * 'i' 32 bit integer
107 * 'l' target long (32 or 64 bit)
108 * 'M' Non-negative target long (32 or 64 bit), in user mode the
109 * value is multiplied by 2^20 (think Mebibyte)
110 * 'o' octets (aka bytes)
111 * user mode accepts an optional E, e, P, p, T, t, G, g, M, m,
112 * K, k suffix, which multiplies the value by 2^60 for suffixes E
113 * and e, 2^50 for suffixes P and p, 2^40 for suffixes T and t,
114 * 2^30 for suffixes G and g, 2^20 for M and m, 2^10 for K and k
115 * 'T' double
116 * user mode accepts an optional ms, us, ns suffix,
117 * which divides the value by 1e3, 1e6, 1e9, respectively
118 * '/' optional gdb-like print format (like "/10x")
119 *
120 * '?' optional type (for all types, except '/')
121 * '.' other form of optional type (for 'i' and 'l')
122 * 'b' boolean
123 * user mode accepts "on" or "off"
124 * '-' optional parameter (eg. '-f')
125 *
126 */
127
128 typedef struct mon_cmd_t {
129 const char *name;
130 const char *args_type;
131 const char *params;
132 const char *help;
133 void (*cmd)(Monitor *mon, const QDict *qdict);
134 /* @sub_table is a list of 2nd level of commands. If it does not exist,
135 * cmd should be used. If it exists, sub_table[?].cmd should be
136 * used, and cmd of 1st level plays the role of help function.
137 */
138 struct mon_cmd_t *sub_table;
139 void (*command_completion)(ReadLineState *rs, int nb_args, const char *str);
140 } mon_cmd_t;
141
142 /* file descriptors passed via SCM_RIGHTS */
143 typedef struct mon_fd_t mon_fd_t;
144 struct mon_fd_t {
145 char *name;
146 int fd;
147 QLIST_ENTRY(mon_fd_t) next;
148 };
149
150 /* file descriptor associated with a file descriptor set */
151 typedef struct MonFdsetFd MonFdsetFd;
152 struct MonFdsetFd {
153 int fd;
154 bool removed;
155 char *opaque;
156 QLIST_ENTRY(MonFdsetFd) next;
157 };
158
159 /* file descriptor set containing fds passed via SCM_RIGHTS */
160 typedef struct MonFdset MonFdset;
161 struct MonFdset {
162 int64_t id;
163 QLIST_HEAD(, MonFdsetFd) fds;
164 QLIST_HEAD(, MonFdsetFd) dup_fds;
165 QLIST_ENTRY(MonFdset) next;
166 };
167
168 typedef struct {
169 JSONMessageParser parser;
170 /*
171 * When a client connects, we're in capabilities negotiation mode.
172 * When command qmp_capabilities succeeds, we go into command
173 * mode.
174 */
175 bool in_command_mode; /* are we in command mode? */
176 } MonitorQMP;
177
178 /*
179 * To prevent flooding clients, events can be throttled. The
180 * throttling is calculated globally, rather than per-Monitor
181 * instance.
182 */
183 typedef struct MonitorQAPIEventState {
184 QAPIEvent event; /* Throttling state for this event type and... */
185 QDict *data; /* ... data, see qapi_event_throttle_equal() */
186 QEMUTimer *timer; /* Timer for handling delayed events */
187 QDict *qdict; /* Delayed event (if any) */
188 } MonitorQAPIEventState;
189
190 typedef struct {
191 int64_t rate; /* Minimum time (in ns) between two events */
192 } MonitorQAPIEventConf;
193
194 struct Monitor {
195 CharDriverState *chr;
196 int reset_seen;
197 int flags;
198 int suspend_cnt;
199 bool skip_flush;
200
201 QemuMutex out_lock;
202 QString *outbuf;
203 guint out_watch;
204
205 /* Read under either BQL or out_lock, written with BQL+out_lock. */
206 int mux_out;
207
208 ReadLineState *rs;
209 MonitorQMP qmp;
210 CPUState *mon_cpu;
211 BlockCompletionFunc *password_completion_cb;
212 void *password_opaque;
213 mon_cmd_t *cmd_table;
214 QLIST_HEAD(,mon_fd_t) fds;
215 QLIST_ENTRY(Monitor) entry;
216 };
217
218 /* QMP checker flags */
219 #define QMP_ACCEPT_UNKNOWNS 1
220
221 /* Protects mon_list, monitor_event_state. */
222 static QemuMutex monitor_lock;
223
224 static QLIST_HEAD(mon_list, Monitor) mon_list;
225 static QLIST_HEAD(mon_fdsets, MonFdset) mon_fdsets;
226 static int mon_refcount;
227
228 static mon_cmd_t mon_cmds[];
229 static mon_cmd_t info_cmds[];
230
231 Monitor *cur_mon;
232
233 static QEMUClockType event_clock_type = QEMU_CLOCK_REALTIME;
234
235 static void monitor_command_cb(void *opaque, const char *cmdline,
236 void *readline_opaque);
237
238 /**
239 * Is @mon a QMP monitor?
240 */
241 static inline bool monitor_is_qmp(const Monitor *mon)
242 {
243 return (mon->flags & MONITOR_USE_CONTROL);
244 }
245
246 /**
247 * Is the current monitor, if any, a QMP monitor?
248 */
249 bool monitor_cur_is_qmp(void)
250 {
251 return cur_mon && monitor_is_qmp(cur_mon);
252 }
253
254 void monitor_read_command(Monitor *mon, int show_prompt)
255 {
256 if (!mon->rs)
257 return;
258
259 readline_start(mon->rs, "(qemu) ", 0, monitor_command_cb, NULL);
260 if (show_prompt)
261 readline_show_prompt(mon->rs);
262 }
263
264 int monitor_read_password(Monitor *mon, ReadLineFunc *readline_func,
265 void *opaque)
266 {
267 if (mon->rs) {
268 readline_start(mon->rs, "Password: ", 1, readline_func, opaque);
269 /* prompt is printed on return from the command handler */
270 return 0;
271 } else {
272 monitor_printf(mon, "terminal does not support password prompting\n");
273 return -ENOTTY;
274 }
275 }
276
277 static void monitor_flush_locked(Monitor *mon);
278
279 static gboolean monitor_unblocked(GIOChannel *chan, GIOCondition cond,
280 void *opaque)
281 {
282 Monitor *mon = opaque;
283
284 qemu_mutex_lock(&mon->out_lock);
285 mon->out_watch = 0;
286 monitor_flush_locked(mon);
287 qemu_mutex_unlock(&mon->out_lock);
288 return FALSE;
289 }
290
291 /* Called with mon->out_lock held. */
292 static void monitor_flush_locked(Monitor *mon)
293 {
294 int rc;
295 size_t len;
296 const char *buf;
297
298 if (mon->skip_flush) {
299 return;
300 }
301
302 buf = qstring_get_str(mon->outbuf);
303 len = qstring_get_length(mon->outbuf);
304
305 if (len && !mon->mux_out) {
306 rc = qemu_chr_fe_write(mon->chr, (const uint8_t *) buf, len);
307 if ((rc < 0 && errno != EAGAIN) || (rc == len)) {
308 /* all flushed or error */
309 QDECREF(mon->outbuf);
310 mon->outbuf = qstring_new();
311 return;
312 }
313 if (rc > 0) {
314 /* partial write */
315 QString *tmp = qstring_from_str(buf + rc);
316 QDECREF(mon->outbuf);
317 mon->outbuf = tmp;
318 }
319 if (mon->out_watch == 0) {
320 mon->out_watch = qemu_chr_fe_add_watch(mon->chr, G_IO_OUT|G_IO_HUP,
321 monitor_unblocked, mon);
322 }
323 }
324 }
325
326 void monitor_flush(Monitor *mon)
327 {
328 qemu_mutex_lock(&mon->out_lock);
329 monitor_flush_locked(mon);
330 qemu_mutex_unlock(&mon->out_lock);
331 }
332
333 /* flush at every end of line */
334 static void monitor_puts(Monitor *mon, const char *str)
335 {
336 char c;
337
338 qemu_mutex_lock(&mon->out_lock);
339 for(;;) {
340 c = *str++;
341 if (c == '\0')
342 break;
343 if (c == '\n') {
344 qstring_append_chr(mon->outbuf, '\r');
345 }
346 qstring_append_chr(mon->outbuf, c);
347 if (c == '\n') {
348 monitor_flush_locked(mon);
349 }
350 }
351 qemu_mutex_unlock(&mon->out_lock);
352 }
353
354 void monitor_vprintf(Monitor *mon, const char *fmt, va_list ap)
355 {
356 char *buf;
357
358 if (!mon)
359 return;
360
361 if (monitor_is_qmp(mon)) {
362 return;
363 }
364
365 buf = g_strdup_vprintf(fmt, ap);
366 monitor_puts(mon, buf);
367 g_free(buf);
368 }
369
370 void monitor_printf(Monitor *mon, const char *fmt, ...)
371 {
372 va_list ap;
373 va_start(ap, fmt);
374 monitor_vprintf(mon, fmt, ap);
375 va_end(ap);
376 }
377
378 int monitor_fprintf(FILE *stream, const char *fmt, ...)
379 {
380 va_list ap;
381 va_start(ap, fmt);
382 monitor_vprintf((Monitor *)stream, fmt, ap);
383 va_end(ap);
384 return 0;
385 }
386
387 static void monitor_json_emitter(Monitor *mon, const QObject *data)
388 {
389 QString *json;
390
391 json = mon->flags & MONITOR_USE_PRETTY ? qobject_to_json_pretty(data) :
392 qobject_to_json(data);
393 assert(json != NULL);
394
395 qstring_append_chr(json, '\n');
396 monitor_puts(mon, qstring_get_str(json));
397
398 QDECREF(json);
399 }
400
401 static MonitorQAPIEventConf monitor_qapi_event_conf[QAPI_EVENT__MAX] = {
402 /* Limit guest-triggerable events to 1 per second */
403 [QAPI_EVENT_RTC_CHANGE] = { 1000 * SCALE_MS },
404 [QAPI_EVENT_WATCHDOG] = { 1000 * SCALE_MS },
405 [QAPI_EVENT_BALLOON_CHANGE] = { 1000 * SCALE_MS },
406 [QAPI_EVENT_QUORUM_REPORT_BAD] = { 1000 * SCALE_MS },
407 [QAPI_EVENT_QUORUM_FAILURE] = { 1000 * SCALE_MS },
408 [QAPI_EVENT_VSERPORT_CHANGE] = { 1000 * SCALE_MS },
409 };
410
411 GHashTable *monitor_qapi_event_state;
412
413 /*
414 * Emits the event to every monitor instance, @event is only used for trace
415 * Called with monitor_lock held.
416 */
417 static void monitor_qapi_event_emit(QAPIEvent event, QDict *qdict)
418 {
419 Monitor *mon;
420
421 trace_monitor_protocol_event_emit(event, qdict);
422 QLIST_FOREACH(mon, &mon_list, entry) {
423 if (monitor_is_qmp(mon) && mon->qmp.in_command_mode) {
424 monitor_json_emitter(mon, QOBJECT(qdict));
425 }
426 }
427 }
428
429 static void monitor_qapi_event_handler(void *opaque);
430
431 /*
432 * Queue a new event for emission to Monitor instances,
433 * applying any rate limiting if required.
434 */
435 static void
436 monitor_qapi_event_queue(QAPIEvent event, QDict *qdict, Error **errp)
437 {
438 MonitorQAPIEventConf *evconf;
439 MonitorQAPIEventState *evstate;
440
441 assert(event < QAPI_EVENT__MAX);
442 evconf = &monitor_qapi_event_conf[event];
443 trace_monitor_protocol_event_queue(event, qdict, evconf->rate);
444
445 qemu_mutex_lock(&monitor_lock);
446
447 if (!evconf->rate) {
448 /* Unthrottled event */
449 monitor_qapi_event_emit(event, qdict);
450 } else {
451 QDict *data = qobject_to_qdict(qdict_get(qdict, "data"));
452 MonitorQAPIEventState key = { .event = event, .data = data };
453
454 evstate = g_hash_table_lookup(monitor_qapi_event_state, &key);
455 assert(!evstate || timer_pending(evstate->timer));
456
457 if (evstate) {
458 /*
459 * Timer is pending for (at least) evconf->rate ns after
460 * last send. Store event for sending when timer fires,
461 * replacing a prior stored event if any.
462 */
463 QDECREF(evstate->qdict);
464 evstate->qdict = qdict;
465 QINCREF(evstate->qdict);
466 } else {
467 /*
468 * Last send was (at least) evconf->rate ns ago.
469 * Send immediately, and arm the timer to call
470 * monitor_qapi_event_handler() in evconf->rate ns. Any
471 * events arriving before then will be delayed until then.
472 */
473 int64_t now = qemu_clock_get_ns(event_clock_type);
474
475 monitor_qapi_event_emit(event, qdict);
476
477 evstate = g_new(MonitorQAPIEventState, 1);
478 evstate->event = event;
479 evstate->data = data;
480 QINCREF(evstate->data);
481 evstate->qdict = NULL;
482 evstate->timer = timer_new_ns(event_clock_type,
483 monitor_qapi_event_handler,
484 evstate);
485 g_hash_table_add(monitor_qapi_event_state, evstate);
486 timer_mod_ns(evstate->timer, now + evconf->rate);
487 }
488 }
489
490 qemu_mutex_unlock(&monitor_lock);
491 }
492
493 /*
494 * This function runs evconf->rate ns after sending a throttled
495 * event.
496 * If another event has since been stored, send it.
497 */
498 static void monitor_qapi_event_handler(void *opaque)
499 {
500 MonitorQAPIEventState *evstate = opaque;
501 MonitorQAPIEventConf *evconf = &monitor_qapi_event_conf[evstate->event];
502
503 trace_monitor_protocol_event_handler(evstate->event, evstate->qdict);
504 qemu_mutex_lock(&monitor_lock);
505
506 if (evstate->qdict) {
507 int64_t now = qemu_clock_get_ns(event_clock_type);
508
509 monitor_qapi_event_emit(evstate->event, evstate->qdict);
510 QDECREF(evstate->qdict);
511 evstate->qdict = NULL;
512 timer_mod_ns(evstate->timer, now + evconf->rate);
513 } else {
514 g_hash_table_remove(monitor_qapi_event_state, evstate);
515 QDECREF(evstate->data);
516 timer_free(evstate->timer);
517 g_free(evstate);
518 }
519
520 qemu_mutex_unlock(&monitor_lock);
521 }
522
523 static unsigned int qapi_event_throttle_hash(const void *key)
524 {
525 const MonitorQAPIEventState *evstate = key;
526 unsigned int hash = evstate->event * 255;
527
528 if (evstate->event == QAPI_EVENT_VSERPORT_CHANGE) {
529 hash += g_str_hash(qdict_get_str(evstate->data, "id"));
530 }
531
532 if (evstate->event == QAPI_EVENT_QUORUM_REPORT_BAD) {
533 hash += g_str_hash(qdict_get_str(evstate->data, "node-name"));
534 }
535
536 return hash;
537 }
538
539 static gboolean qapi_event_throttle_equal(const void *a, const void *b)
540 {
541 const MonitorQAPIEventState *eva = a;
542 const MonitorQAPIEventState *evb = b;
543
544 if (eva->event != evb->event) {
545 return FALSE;
546 }
547
548 if (eva->event == QAPI_EVENT_VSERPORT_CHANGE) {
549 return !strcmp(qdict_get_str(eva->data, "id"),
550 qdict_get_str(evb->data, "id"));
551 }
552
553 if (eva->event == QAPI_EVENT_QUORUM_REPORT_BAD) {
554 return !strcmp(qdict_get_str(eva->data, "node-name"),
555 qdict_get_str(evb->data, "node-name"));
556 }
557
558 return TRUE;
559 }
560
561 static void monitor_qapi_event_init(void)
562 {
563 if (qtest_enabled()) {
564 event_clock_type = QEMU_CLOCK_VIRTUAL;
565 }
566
567 monitor_qapi_event_state = g_hash_table_new(qapi_event_throttle_hash,
568 qapi_event_throttle_equal);
569 qmp_event_set_func_emit(monitor_qapi_event_queue);
570 }
571
572 void qmp_qmp_capabilities(Error **errp)
573 {
574 cur_mon->qmp.in_command_mode = true;
575 }
576
577 static void handle_hmp_command(Monitor *mon, const char *cmdline);
578
579 static void monitor_data_init(Monitor *mon)
580 {
581 memset(mon, 0, sizeof(Monitor));
582 qemu_mutex_init(&mon->out_lock);
583 mon->outbuf = qstring_new();
584 /* Use *mon_cmds by default. */
585 mon->cmd_table = mon_cmds;
586 }
587
588 static void monitor_data_destroy(Monitor *mon)
589 {
590 if (mon->chr) {
591 qemu_chr_add_handlers(mon->chr, NULL, NULL, NULL, NULL);
592 }
593 if (monitor_is_qmp(mon)) {
594 json_message_parser_destroy(&mon->qmp.parser);
595 }
596 g_free(mon->rs);
597 QDECREF(mon->outbuf);
598 qemu_mutex_destroy(&mon->out_lock);
599 }
600
601 char *qmp_human_monitor_command(const char *command_line, bool has_cpu_index,
602 int64_t cpu_index, Error **errp)
603 {
604 char *output = NULL;
605 Monitor *old_mon, hmp;
606
607 monitor_data_init(&hmp);
608 hmp.skip_flush = true;
609
610 old_mon = cur_mon;
611 cur_mon = &hmp;
612
613 if (has_cpu_index) {
614 int ret = monitor_set_cpu(cpu_index);
615 if (ret < 0) {
616 cur_mon = old_mon;
617 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "cpu-index",
618 "a CPU number");
619 goto out;
620 }
621 }
622
623 handle_hmp_command(&hmp, command_line);
624 cur_mon = old_mon;
625
626 qemu_mutex_lock(&hmp.out_lock);
627 if (qstring_get_length(hmp.outbuf) > 0) {
628 output = g_strdup(qstring_get_str(hmp.outbuf));
629 } else {
630 output = g_strdup("");
631 }
632 qemu_mutex_unlock(&hmp.out_lock);
633
634 out:
635 monitor_data_destroy(&hmp);
636 return output;
637 }
638
639 static int compare_cmd(const char *name, const char *list)
640 {
641 const char *p, *pstart;
642 int len;
643 len = strlen(name);
644 p = list;
645 for(;;) {
646 pstart = p;
647 p = strchr(p, '|');
648 if (!p)
649 p = pstart + strlen(pstart);
650 if ((p - pstart) == len && !memcmp(pstart, name, len))
651 return 1;
652 if (*p == '\0')
653 break;
654 p++;
655 }
656 return 0;
657 }
658
659 static int get_str(char *buf, int buf_size, const char **pp)
660 {
661 const char *p;
662 char *q;
663 int c;
664
665 q = buf;
666 p = *pp;
667 while (qemu_isspace(*p)) {
668 p++;
669 }
670 if (*p == '\0') {
671 fail:
672 *q = '\0';
673 *pp = p;
674 return -1;
675 }
676 if (*p == '\"') {
677 p++;
678 while (*p != '\0' && *p != '\"') {
679 if (*p == '\\') {
680 p++;
681 c = *p++;
682 switch (c) {
683 case 'n':
684 c = '\n';
685 break;
686 case 'r':
687 c = '\r';
688 break;
689 case '\\':
690 case '\'':
691 case '\"':
692 break;
693 default:
694 printf("unsupported escape code: '\\%c'\n", c);
695 goto fail;
696 }
697 if ((q - buf) < buf_size - 1) {
698 *q++ = c;
699 }
700 } else {
701 if ((q - buf) < buf_size - 1) {
702 *q++ = *p;
703 }
704 p++;
705 }
706 }
707 if (*p != '\"') {
708 printf("unterminated string\n");
709 goto fail;
710 }
711 p++;
712 } else {
713 while (*p != '\0' && !qemu_isspace(*p)) {
714 if ((q - buf) < buf_size - 1) {
715 *q++ = *p;
716 }
717 p++;
718 }
719 }
720 *q = '\0';
721 *pp = p;
722 return 0;
723 }
724
725 #define MAX_ARGS 16
726
727 static void free_cmdline_args(char **args, int nb_args)
728 {
729 int i;
730
731 assert(nb_args <= MAX_ARGS);
732
733 for (i = 0; i < nb_args; i++) {
734 g_free(args[i]);
735 }
736
737 }
738
739 /*
740 * Parse the command line to get valid args.
741 * @cmdline: command line to be parsed.
742 * @pnb_args: location to store the number of args, must NOT be NULL.
743 * @args: location to store the args, which should be freed by caller, must
744 * NOT be NULL.
745 *
746 * Returns 0 on success, negative on failure.
747 *
748 * NOTE: this parser is an approximate form of the real command parser. Number
749 * of args have a limit of MAX_ARGS. If cmdline contains more, it will
750 * return with failure.
751 */
752 static int parse_cmdline(const char *cmdline,
753 int *pnb_args, char **args)
754 {
755 const char *p;
756 int nb_args, ret;
757 char buf[1024];
758
759 p = cmdline;
760 nb_args = 0;
761 for (;;) {
762 while (qemu_isspace(*p)) {
763 p++;
764 }
765 if (*p == '\0') {
766 break;
767 }
768 if (nb_args >= MAX_ARGS) {
769 goto fail;
770 }
771 ret = get_str(buf, sizeof(buf), &p);
772 if (ret < 0) {
773 goto fail;
774 }
775 args[nb_args] = g_strdup(buf);
776 nb_args++;
777 }
778 *pnb_args = nb_args;
779 return 0;
780
781 fail:
782 free_cmdline_args(args, nb_args);
783 return -1;
784 }
785
786 static void help_cmd_dump_one(Monitor *mon,
787 const mon_cmd_t *cmd,
788 char **prefix_args,
789 int prefix_args_nb)
790 {
791 int i;
792
793 for (i = 0; i < prefix_args_nb; i++) {
794 monitor_printf(mon, "%s ", prefix_args[i]);
795 }
796 monitor_printf(mon, "%s %s -- %s\n", cmd->name, cmd->params, cmd->help);
797 }
798
799 /* @args[@arg_index] is the valid command need to find in @cmds */
800 static void help_cmd_dump(Monitor *mon, const mon_cmd_t *cmds,
801 char **args, int nb_args, int arg_index)
802 {
803 const mon_cmd_t *cmd;
804
805 /* No valid arg need to compare with, dump all in *cmds */
806 if (arg_index >= nb_args) {
807 for (cmd = cmds; cmd->name != NULL; cmd++) {
808 help_cmd_dump_one(mon, cmd, args, arg_index);
809 }
810 return;
811 }
812
813 /* Find one entry to dump */
814 for (cmd = cmds; cmd->name != NULL; cmd++) {
815 if (compare_cmd(args[arg_index], cmd->name)) {
816 if (cmd->sub_table) {
817 /* continue with next arg */
818 help_cmd_dump(mon, cmd->sub_table,
819 args, nb_args, arg_index + 1);
820 } else {
821 help_cmd_dump_one(mon, cmd, args, arg_index);
822 }
823 break;
824 }
825 }
826 }
827
828 static void help_cmd(Monitor *mon, const char *name)
829 {
830 char *args[MAX_ARGS];
831 int nb_args = 0;
832
833 /* 1. parse user input */
834 if (name) {
835 /* special case for log, directly dump and return */
836 if (!strcmp(name, "log")) {
837 const QEMULogItem *item;
838 monitor_printf(mon, "Log items (comma separated):\n");
839 monitor_printf(mon, "%-10s %s\n", "none", "remove all logs");
840 for (item = qemu_log_items; item->mask != 0; item++) {
841 monitor_printf(mon, "%-10s %s\n", item->name, item->help);
842 }
843 return;
844 }
845
846 if (parse_cmdline(name, &nb_args, args) < 0) {
847 return;
848 }
849 }
850
851 /* 2. dump the contents according to parsed args */
852 help_cmd_dump(mon, mon->cmd_table, args, nb_args, 0);
853
854 free_cmdline_args(args, nb_args);
855 }
856
857 static void do_help_cmd(Monitor *mon, const QDict *qdict)
858 {
859 help_cmd(mon, qdict_get_try_str(qdict, "name"));
860 }
861
862 static void hmp_trace_event(Monitor *mon, const QDict *qdict)
863 {
864 const char *tp_name = qdict_get_str(qdict, "name");
865 bool new_state = qdict_get_bool(qdict, "option");
866 bool has_vcpu = qdict_haskey(qdict, "vcpu");
867 int vcpu = qdict_get_try_int(qdict, "vcpu", 0);
868 Error *local_err = NULL;
869
870 if (vcpu < 0) {
871 monitor_printf(mon, "argument vcpu must be positive");
872 return;
873 }
874
875 qmp_trace_event_set_state(tp_name, new_state, true, true, has_vcpu, vcpu, &local_err);
876 if (local_err) {
877 error_report_err(local_err);
878 }
879 }
880
881 #ifdef CONFIG_TRACE_SIMPLE
882 static void hmp_trace_file(Monitor *mon, const QDict *qdict)
883 {
884 const char *op = qdict_get_try_str(qdict, "op");
885 const char *arg = qdict_get_try_str(qdict, "arg");
886
887 if (!op) {
888 st_print_trace_file_status((FILE *)mon, &monitor_fprintf);
889 } else if (!strcmp(op, "on")) {
890 st_set_trace_file_enabled(true);
891 } else if (!strcmp(op, "off")) {
892 st_set_trace_file_enabled(false);
893 } else if (!strcmp(op, "flush")) {
894 st_flush_trace_buffer();
895 } else if (!strcmp(op, "set")) {
896 if (arg) {
897 st_set_trace_file(arg);
898 }
899 } else {
900 monitor_printf(mon, "unexpected argument \"%s\"\n", op);
901 help_cmd(mon, "trace-file");
902 }
903 }
904 #endif
905
906 static void hmp_info_help(Monitor *mon, const QDict *qdict)
907 {
908 help_cmd(mon, "info");
909 }
910
911 static void query_commands_cb(QmpCommand *cmd, void *opaque)
912 {
913 CommandInfoList *info, **list = opaque;
914
915 if (!cmd->enabled) {
916 return;
917 }
918
919 info = g_malloc0(sizeof(*info));
920 info->value = g_malloc0(sizeof(*info->value));
921 info->value->name = g_strdup(cmd->name);
922 info->next = *list;
923 *list = info;
924 }
925
926 CommandInfoList *qmp_query_commands(Error **errp)
927 {
928 CommandInfoList *list = NULL;
929
930 qmp_for_each_command(query_commands_cb, &list);
931
932 return list;
933 }
934
935 EventInfoList *qmp_query_events(Error **errp)
936 {
937 EventInfoList *info, *ev_list = NULL;
938 QAPIEvent e;
939
940 for (e = 0 ; e < QAPI_EVENT__MAX ; e++) {
941 const char *event_name = QAPIEvent_lookup[e];
942 assert(event_name != NULL);
943 info = g_malloc0(sizeof(*info));
944 info->value = g_malloc0(sizeof(*info->value));
945 info->value->name = g_strdup(event_name);
946
947 info->next = ev_list;
948 ev_list = info;
949 }
950
951 return ev_list;
952 }
953
954 /*
955 * Minor hack: generated marshalling suppressed for this command
956 * ('gen': false in the schema) so we can parse the JSON string
957 * directly into QObject instead of first parsing it with
958 * visit_type_SchemaInfoList() into a SchemaInfoList, then marshal it
959 * to QObject with generated output marshallers, every time. Instead,
960 * we do it in test-qmp-input-visitor.c, just to make sure
961 * qapi-introspect.py's output actually conforms to the schema.
962 */
963 static void qmp_query_qmp_schema(QDict *qdict, QObject **ret_data,
964 Error **errp)
965 {
966 *ret_data = qobject_from_json(qmp_schema_json);
967 }
968
969 /*
970 * We used to define commands in qmp-commands.hx in addition to the
971 * QAPI schema. This permitted defining some of them only in certain
972 * configurations. query-commands has always reflected that (good,
973 * because it lets QMP clients figure out what's actually available),
974 * while query-qmp-schema never did (not so good). This function is a
975 * hack to keep the configuration-specific commands defined exactly as
976 * before, even though qmp-commands.hx is gone.
977 *
978 * FIXME Educate the QAPI schema on configuration-specific commands,
979 * and drop this hack.
980 */
981 static void qmp_unregister_commands_hack(void)
982 {
983 #ifndef CONFIG_SPICE
984 qmp_unregister_command("query-spice");
985 #endif
986 #ifndef TARGET_I386
987 qmp_unregister_command("rtc-reset-reinjection");
988 #endif
989 #ifndef TARGET_S390X
990 qmp_unregister_command("dump-skeys");
991 #endif
992 #ifndef TARGET_ARM
993 qmp_unregister_command("query-gic-capabilities");
994 #endif
995 }
996
997 static void qmp_init_marshal(void)
998 {
999 qmp_register_command("query-qmp-schema", qmp_query_qmp_schema,
1000 QCO_NO_OPTIONS);
1001 qmp_register_command("device_add", qmp_device_add,
1002 QCO_NO_OPTIONS);
1003 qmp_register_command("netdev_add", qmp_netdev_add,
1004 QCO_NO_OPTIONS);
1005
1006 /* call it after the rest of qapi_init() */
1007 register_module_init(qmp_unregister_commands_hack, MODULE_INIT_QAPI);
1008 }
1009
1010 qapi_init(qmp_init_marshal);
1011
1012 /* set the current CPU defined by the user */
1013 int monitor_set_cpu(int cpu_index)
1014 {
1015 CPUState *cpu;
1016
1017 cpu = qemu_get_cpu(cpu_index);
1018 if (cpu == NULL) {
1019 return -1;
1020 }
1021 cur_mon->mon_cpu = cpu;
1022 return 0;
1023 }
1024
1025 CPUState *mon_get_cpu(void)
1026 {
1027 if (!cur_mon->mon_cpu) {
1028 monitor_set_cpu(first_cpu->cpu_index);
1029 }
1030 cpu_synchronize_state(cur_mon->mon_cpu);
1031 return cur_mon->mon_cpu;
1032 }
1033
1034 CPUArchState *mon_get_cpu_env(void)
1035 {
1036 return mon_get_cpu()->env_ptr;
1037 }
1038
1039 int monitor_get_cpu_index(void)
1040 {
1041 return mon_get_cpu()->cpu_index;
1042 }
1043
1044 static void hmp_info_registers(Monitor *mon, const QDict *qdict)
1045 {
1046 cpu_dump_state(mon_get_cpu(), (FILE *)mon, monitor_fprintf, CPU_DUMP_FPU);
1047 }
1048
1049 static void hmp_info_jit(Monitor *mon, const QDict *qdict)
1050 {
1051 dump_exec_info((FILE *)mon, monitor_fprintf);
1052 dump_drift_info((FILE *)mon, monitor_fprintf);
1053 }
1054
1055 static void hmp_info_opcount(Monitor *mon, const QDict *qdict)
1056 {
1057 dump_opcount_info((FILE *)mon, monitor_fprintf);
1058 }
1059
1060 static void hmp_info_history(Monitor *mon, const QDict *qdict)
1061 {
1062 int i;
1063 const char *str;
1064
1065 if (!mon->rs)
1066 return;
1067 i = 0;
1068 for(;;) {
1069 str = readline_get_history(mon->rs, i);
1070 if (!str)
1071 break;
1072 monitor_printf(mon, "%d: '%s'\n", i, str);
1073 i++;
1074 }
1075 }
1076
1077 static void hmp_info_cpustats(Monitor *mon, const QDict *qdict)
1078 {
1079 cpu_dump_statistics(mon_get_cpu(), (FILE *)mon, &monitor_fprintf, 0);
1080 }
1081
1082 static void hmp_info_trace_events(Monitor *mon, const QDict *qdict)
1083 {
1084 const char *name = qdict_get_try_str(qdict, "name");
1085 bool has_vcpu = qdict_haskey(qdict, "vcpu");
1086 int vcpu = qdict_get_try_int(qdict, "vcpu", 0);
1087 TraceEventInfoList *events;
1088 TraceEventInfoList *elem;
1089 Error *local_err = NULL;
1090
1091 if (name == NULL) {
1092 name = "*";
1093 }
1094 if (vcpu < 0) {
1095 monitor_printf(mon, "argument vcpu must be positive");
1096 return;
1097 }
1098
1099 events = qmp_trace_event_get_state(name, has_vcpu, vcpu, &local_err);
1100 if (local_err) {
1101 error_report_err(local_err);
1102 return;
1103 }
1104
1105 for (elem = events; elem != NULL; elem = elem->next) {
1106 monitor_printf(mon, "%s : state %u\n",
1107 elem->value->name,
1108 elem->value->state == TRACE_EVENT_STATE_ENABLED ? 1 : 0);
1109 }
1110 qapi_free_TraceEventInfoList(events);
1111 }
1112
1113 void qmp_client_migrate_info(const char *protocol, const char *hostname,
1114 bool has_port, int64_t port,
1115 bool has_tls_port, int64_t tls_port,
1116 bool has_cert_subject, const char *cert_subject,
1117 Error **errp)
1118 {
1119 if (strcmp(protocol, "spice") == 0) {
1120 if (!qemu_using_spice(errp)) {
1121 return;
1122 }
1123
1124 if (!has_port && !has_tls_port) {
1125 error_setg(errp, QERR_MISSING_PARAMETER, "port/tls-port");
1126 return;
1127 }
1128
1129 if (qemu_spice_migrate_info(hostname,
1130 has_port ? port : -1,
1131 has_tls_port ? tls_port : -1,
1132 cert_subject)) {
1133 error_setg(errp, QERR_UNDEFINED_ERROR);
1134 return;
1135 }
1136 return;
1137 }
1138
1139 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "protocol", "spice");
1140 }
1141
1142 static void hmp_logfile(Monitor *mon, const QDict *qdict)
1143 {
1144 Error *err = NULL;
1145
1146 qemu_set_log_filename(qdict_get_str(qdict, "filename"), &err);
1147 if (err) {
1148 error_report_err(err);
1149 }
1150 }
1151
1152 static void hmp_log(Monitor *mon, const QDict *qdict)
1153 {
1154 int mask;
1155 const char *items = qdict_get_str(qdict, "items");
1156
1157 if (!strcmp(items, "none")) {
1158 mask = 0;
1159 } else {
1160 mask = qemu_str_to_log_mask(items);
1161 if (!mask) {
1162 help_cmd(mon, "log");
1163 return;
1164 }
1165 }
1166 qemu_set_log(mask);
1167 }
1168
1169 static void hmp_singlestep(Monitor *mon, const QDict *qdict)
1170 {
1171 const char *option = qdict_get_try_str(qdict, "option");
1172 if (!option || !strcmp(option, "on")) {
1173 singlestep = 1;
1174 } else if (!strcmp(option, "off")) {
1175 singlestep = 0;
1176 } else {
1177 monitor_printf(mon, "unexpected option %s\n", option);
1178 }
1179 }
1180
1181 static void hmp_gdbserver(Monitor *mon, const QDict *qdict)
1182 {
1183 const char *device = qdict_get_try_str(qdict, "device");
1184 if (!device)
1185 device = "tcp::" DEFAULT_GDBSTUB_PORT;
1186 if (gdbserver_start(device) < 0) {
1187 monitor_printf(mon, "Could not open gdbserver on device '%s'\n",
1188 device);
1189 } else if (strcmp(device, "none") == 0) {
1190 monitor_printf(mon, "Disabled gdbserver\n");
1191 } else {
1192 monitor_printf(mon, "Waiting for gdb connection on device '%s'\n",
1193 device);
1194 }
1195 }
1196
1197 static void hmp_watchdog_action(Monitor *mon, const QDict *qdict)
1198 {
1199 const char *action = qdict_get_str(qdict, "action");
1200 if (select_watchdog_action(action) == -1) {
1201 monitor_printf(mon, "Unknown watchdog action '%s'\n", action);
1202 }
1203 }
1204
1205 static void monitor_printc(Monitor *mon, int c)
1206 {
1207 monitor_printf(mon, "'");
1208 switch(c) {
1209 case '\'':
1210 monitor_printf(mon, "\\'");
1211 break;
1212 case '\\':
1213 monitor_printf(mon, "\\\\");
1214 break;
1215 case '\n':
1216 monitor_printf(mon, "\\n");
1217 break;
1218 case '\r':
1219 monitor_printf(mon, "\\r");
1220 break;
1221 default:
1222 if (c >= 32 && c <= 126) {
1223 monitor_printf(mon, "%c", c);
1224 } else {
1225 monitor_printf(mon, "\\x%02x", c);
1226 }
1227 break;
1228 }
1229 monitor_printf(mon, "'");
1230 }
1231
1232 static void memory_dump(Monitor *mon, int count, int format, int wsize,
1233 hwaddr addr, int is_physical)
1234 {
1235 int l, line_size, i, max_digits, len;
1236 uint8_t buf[16];
1237 uint64_t v;
1238
1239 if (format == 'i') {
1240 int flags = 0;
1241 #ifdef TARGET_I386
1242 CPUArchState *env = mon_get_cpu_env();
1243 if (wsize == 2) {
1244 flags = 1;
1245 } else if (wsize == 4) {
1246 flags = 0;
1247 } else {
1248 /* as default we use the current CS size */
1249 flags = 0;
1250 if (env) {
1251 #ifdef TARGET_X86_64
1252 if ((env->efer & MSR_EFER_LMA) &&
1253 (env->segs[R_CS].flags & DESC_L_MASK))
1254 flags = 2;
1255 else
1256 #endif
1257 if (!(env->segs[R_CS].flags & DESC_B_MASK))
1258 flags = 1;
1259 }
1260 }
1261 #endif
1262 #ifdef TARGET_PPC
1263 CPUArchState *env = mon_get_cpu_env();
1264 flags = msr_le << 16;
1265 flags |= env->bfd_mach;
1266 #endif
1267 monitor_disas(mon, mon_get_cpu(), addr, count, is_physical, flags);
1268 return;
1269 }
1270
1271 len = wsize * count;
1272 if (wsize == 1)
1273 line_size = 8;
1274 else
1275 line_size = 16;
1276 max_digits = 0;
1277
1278 switch(format) {
1279 case 'o':
1280 max_digits = (wsize * 8 + 2) / 3;
1281 break;
1282 default:
1283 case 'x':
1284 max_digits = (wsize * 8) / 4;
1285 break;
1286 case 'u':
1287 case 'd':
1288 max_digits = (wsize * 8 * 10 + 32) / 33;
1289 break;
1290 case 'c':
1291 wsize = 1;
1292 break;
1293 }
1294
1295 while (len > 0) {
1296 if (is_physical)
1297 monitor_printf(mon, TARGET_FMT_plx ":", addr);
1298 else
1299 monitor_printf(mon, TARGET_FMT_lx ":", (target_ulong)addr);
1300 l = len;
1301 if (l > line_size)
1302 l = line_size;
1303 if (is_physical) {
1304 cpu_physical_memory_read(addr, buf, l);
1305 } else {
1306 if (cpu_memory_rw_debug(mon_get_cpu(), addr, buf, l, 0) < 0) {
1307 monitor_printf(mon, " Cannot access memory\n");
1308 break;
1309 }
1310 }
1311 i = 0;
1312 while (i < l) {
1313 switch(wsize) {
1314 default:
1315 case 1:
1316 v = ldub_p(buf + i);
1317 break;
1318 case 2:
1319 v = lduw_p(buf + i);
1320 break;
1321 case 4:
1322 v = (uint32_t)ldl_p(buf + i);
1323 break;
1324 case 8:
1325 v = ldq_p(buf + i);
1326 break;
1327 }
1328 monitor_printf(mon, " ");
1329 switch(format) {
1330 case 'o':
1331 monitor_printf(mon, "%#*" PRIo64, max_digits, v);
1332 break;
1333 case 'x':
1334 monitor_printf(mon, "0x%0*" PRIx64, max_digits, v);
1335 break;
1336 case 'u':
1337 monitor_printf(mon, "%*" PRIu64, max_digits, v);
1338 break;
1339 case 'd':
1340 monitor_printf(mon, "%*" PRId64, max_digits, v);
1341 break;
1342 case 'c':
1343 monitor_printc(mon, v);
1344 break;
1345 }
1346 i += wsize;
1347 }
1348 monitor_printf(mon, "\n");
1349 addr += l;
1350 len -= l;
1351 }
1352 }
1353
1354 static void hmp_memory_dump(Monitor *mon, const QDict *qdict)
1355 {
1356 int count = qdict_get_int(qdict, "count");
1357 int format = qdict_get_int(qdict, "format");
1358 int size = qdict_get_int(qdict, "size");
1359 target_long addr = qdict_get_int(qdict, "addr");
1360
1361 memory_dump(mon, count, format, size, addr, 0);
1362 }
1363
1364 static void hmp_physical_memory_dump(Monitor *mon, const QDict *qdict)
1365 {
1366 int count = qdict_get_int(qdict, "count");
1367 int format = qdict_get_int(qdict, "format");
1368 int size = qdict_get_int(qdict, "size");
1369 hwaddr addr = qdict_get_int(qdict, "addr");
1370
1371 memory_dump(mon, count, format, size, addr, 1);
1372 }
1373
1374 static void do_print(Monitor *mon, const QDict *qdict)
1375 {
1376 int format = qdict_get_int(qdict, "format");
1377 hwaddr val = qdict_get_int(qdict, "val");
1378
1379 switch(format) {
1380 case 'o':
1381 monitor_printf(mon, "%#" HWADDR_PRIo, val);
1382 break;
1383 case 'x':
1384 monitor_printf(mon, "%#" HWADDR_PRIx, val);
1385 break;
1386 case 'u':
1387 monitor_printf(mon, "%" HWADDR_PRIu, val);
1388 break;
1389 default:
1390 case 'd':
1391 monitor_printf(mon, "%" HWADDR_PRId, val);
1392 break;
1393 case 'c':
1394 monitor_printc(mon, val);
1395 break;
1396 }
1397 monitor_printf(mon, "\n");
1398 }
1399
1400 static void hmp_sum(Monitor *mon, const QDict *qdict)
1401 {
1402 uint32_t addr;
1403 uint16_t sum;
1404 uint32_t start = qdict_get_int(qdict, "start");
1405 uint32_t size = qdict_get_int(qdict, "size");
1406
1407 sum = 0;
1408 for(addr = start; addr < (start + size); addr++) {
1409 uint8_t val = address_space_ldub(&address_space_memory, addr,
1410 MEMTXATTRS_UNSPECIFIED, NULL);
1411 /* BSD sum algorithm ('sum' Unix command) */
1412 sum = (sum >> 1) | (sum << 15);
1413 sum += val;
1414 }
1415 monitor_printf(mon, "%05d\n", sum);
1416 }
1417
1418 static int mouse_button_state;
1419
1420 static void hmp_mouse_move(Monitor *mon, const QDict *qdict)
1421 {
1422 int dx, dy, dz, button;
1423 const char *dx_str = qdict_get_str(qdict, "dx_str");
1424 const char *dy_str = qdict_get_str(qdict, "dy_str");
1425 const char *dz_str = qdict_get_try_str(qdict, "dz_str");
1426
1427 dx = strtol(dx_str, NULL, 0);
1428 dy = strtol(dy_str, NULL, 0);
1429 qemu_input_queue_rel(NULL, INPUT_AXIS_X, dx);
1430 qemu_input_queue_rel(NULL, INPUT_AXIS_Y, dy);
1431
1432 if (dz_str) {
1433 dz = strtol(dz_str, NULL, 0);
1434 if (dz != 0) {
1435 button = (dz > 0) ? INPUT_BUTTON_WHEEL_UP : INPUT_BUTTON_WHEEL_DOWN;
1436 qemu_input_queue_btn(NULL, button, true);
1437 qemu_input_event_sync();
1438 qemu_input_queue_btn(NULL, button, false);
1439 }
1440 }
1441 qemu_input_event_sync();
1442 }
1443
1444 static void hmp_mouse_button(Monitor *mon, const QDict *qdict)
1445 {
1446 static uint32_t bmap[INPUT_BUTTON__MAX] = {
1447 [INPUT_BUTTON_LEFT] = MOUSE_EVENT_LBUTTON,
1448 [INPUT_BUTTON_MIDDLE] = MOUSE_EVENT_MBUTTON,
1449 [INPUT_BUTTON_RIGHT] = MOUSE_EVENT_RBUTTON,
1450 };
1451 int button_state = qdict_get_int(qdict, "button_state");
1452
1453 if (mouse_button_state == button_state) {
1454 return;
1455 }
1456 qemu_input_update_buttons(NULL, bmap, mouse_button_state, button_state);
1457 qemu_input_event_sync();
1458 mouse_button_state = button_state;
1459 }
1460
1461 static void hmp_ioport_read(Monitor *mon, const QDict *qdict)
1462 {
1463 int size = qdict_get_int(qdict, "size");
1464 int addr = qdict_get_int(qdict, "addr");
1465 int has_index = qdict_haskey(qdict, "index");
1466 uint32_t val;
1467 int suffix;
1468
1469 if (has_index) {
1470 int index = qdict_get_int(qdict, "index");
1471 cpu_outb(addr & IOPORTS_MASK, index & 0xff);
1472 addr++;
1473 }
1474 addr &= 0xffff;
1475
1476 switch(size) {
1477 default:
1478 case 1:
1479 val = cpu_inb(addr);
1480 suffix = 'b';
1481 break;
1482 case 2:
1483 val = cpu_inw(addr);
1484 suffix = 'w';
1485 break;
1486 case 4:
1487 val = cpu_inl(addr);
1488 suffix = 'l';
1489 break;
1490 }
1491 monitor_printf(mon, "port%c[0x%04x] = %#0*x\n",
1492 suffix, addr, size * 2, val);
1493 }
1494
1495 static void hmp_ioport_write(Monitor *mon, const QDict *qdict)
1496 {
1497 int size = qdict_get_int(qdict, "size");
1498 int addr = qdict_get_int(qdict, "addr");
1499 int val = qdict_get_int(qdict, "val");
1500
1501 addr &= IOPORTS_MASK;
1502
1503 switch (size) {
1504 default:
1505 case 1:
1506 cpu_outb(addr, val);
1507 break;
1508 case 2:
1509 cpu_outw(addr, val);
1510 break;
1511 case 4:
1512 cpu_outl(addr, val);
1513 break;
1514 }
1515 }
1516
1517 static void hmp_boot_set(Monitor *mon, const QDict *qdict)
1518 {
1519 Error *local_err = NULL;
1520 const char *bootdevice = qdict_get_str(qdict, "bootdevice");
1521
1522 qemu_boot_set(bootdevice, &local_err);
1523 if (local_err) {
1524 error_report_err(local_err);
1525 } else {
1526 monitor_printf(mon, "boot device list now set to %s\n", bootdevice);
1527 }
1528 }
1529
1530 static void hmp_info_mtree(Monitor *mon, const QDict *qdict)
1531 {
1532 mtree_info((fprintf_function)monitor_printf, mon);
1533 }
1534
1535 static void hmp_info_numa(Monitor *mon, const QDict *qdict)
1536 {
1537 int i;
1538 CPUState *cpu;
1539 uint64_t *node_mem;
1540
1541 node_mem = g_new0(uint64_t, nb_numa_nodes);
1542 query_numa_node_mem(node_mem);
1543 monitor_printf(mon, "%d nodes\n", nb_numa_nodes);
1544 for (i = 0; i < nb_numa_nodes; i++) {
1545 monitor_printf(mon, "node %d cpus:", i);
1546 CPU_FOREACH(cpu) {
1547 if (cpu->numa_node == i) {
1548 monitor_printf(mon, " %d", cpu->cpu_index);
1549 }
1550 }
1551 monitor_printf(mon, "\n");
1552 monitor_printf(mon, "node %d size: %" PRId64 " MB\n", i,
1553 node_mem[i] >> 20);
1554 }
1555 g_free(node_mem);
1556 }
1557
1558 #ifdef CONFIG_PROFILER
1559
1560 int64_t tcg_time;
1561 int64_t dev_time;
1562
1563 static void hmp_info_profile(Monitor *mon, const QDict *qdict)
1564 {
1565 monitor_printf(mon, "async time %" PRId64 " (%0.3f)\n",
1566 dev_time, dev_time / (double)NANOSECONDS_PER_SECOND);
1567 monitor_printf(mon, "qemu time %" PRId64 " (%0.3f)\n",
1568 tcg_time, tcg_time / (double)NANOSECONDS_PER_SECOND);
1569 tcg_time = 0;
1570 dev_time = 0;
1571 }
1572 #else
1573 static void hmp_info_profile(Monitor *mon, const QDict *qdict)
1574 {
1575 monitor_printf(mon, "Internal profiler not compiled\n");
1576 }
1577 #endif
1578
1579 /* Capture support */
1580 static QLIST_HEAD (capture_list_head, CaptureState) capture_head;
1581
1582 static void hmp_info_capture(Monitor *mon, const QDict *qdict)
1583 {
1584 int i;
1585 CaptureState *s;
1586
1587 for (s = capture_head.lh_first, i = 0; s; s = s->entries.le_next, ++i) {
1588 monitor_printf(mon, "[%d]: ", i);
1589 s->ops.info (s->opaque);
1590 }
1591 }
1592
1593 static void hmp_stopcapture(Monitor *mon, const QDict *qdict)
1594 {
1595 int i;
1596 int n = qdict_get_int(qdict, "n");
1597 CaptureState *s;
1598
1599 for (s = capture_head.lh_first, i = 0; s; s = s->entries.le_next, ++i) {
1600 if (i == n) {
1601 s->ops.destroy (s->opaque);
1602 QLIST_REMOVE (s, entries);
1603 g_free (s);
1604 return;
1605 }
1606 }
1607 }
1608
1609 static void hmp_wavcapture(Monitor *mon, const QDict *qdict)
1610 {
1611 const char *path = qdict_get_str(qdict, "path");
1612 int has_freq = qdict_haskey(qdict, "freq");
1613 int freq = qdict_get_try_int(qdict, "freq", -1);
1614 int has_bits = qdict_haskey(qdict, "bits");
1615 int bits = qdict_get_try_int(qdict, "bits", -1);
1616 int has_channels = qdict_haskey(qdict, "nchannels");
1617 int nchannels = qdict_get_try_int(qdict, "nchannels", -1);
1618 CaptureState *s;
1619
1620 s = g_malloc0 (sizeof (*s));
1621
1622 freq = has_freq ? freq : 44100;
1623 bits = has_bits ? bits : 16;
1624 nchannels = has_channels ? nchannels : 2;
1625
1626 if (wav_start_capture (s, path, freq, bits, nchannels)) {
1627 monitor_printf(mon, "Failed to add wave capture\n");
1628 g_free (s);
1629 return;
1630 }
1631 QLIST_INSERT_HEAD (&capture_head, s, entries);
1632 }
1633
1634 static qemu_acl *find_acl(Monitor *mon, const char *name)
1635 {
1636 qemu_acl *acl = qemu_acl_find(name);
1637
1638 if (!acl) {
1639 monitor_printf(mon, "acl: unknown list '%s'\n", name);
1640 }
1641 return acl;
1642 }
1643
1644 static void hmp_acl_show(Monitor *mon, const QDict *qdict)
1645 {
1646 const char *aclname = qdict_get_str(qdict, "aclname");
1647 qemu_acl *acl = find_acl(mon, aclname);
1648 qemu_acl_entry *entry;
1649 int i = 0;
1650
1651 if (acl) {
1652 monitor_printf(mon, "policy: %s\n",
1653 acl->defaultDeny ? "deny" : "allow");
1654 QTAILQ_FOREACH(entry, &acl->entries, next) {
1655 i++;
1656 monitor_printf(mon, "%d: %s %s\n", i,
1657 entry->deny ? "deny" : "allow", entry->match);
1658 }
1659 }
1660 }
1661
1662 static void hmp_acl_reset(Monitor *mon, const QDict *qdict)
1663 {
1664 const char *aclname = qdict_get_str(qdict, "aclname");
1665 qemu_acl *acl = find_acl(mon, aclname);
1666
1667 if (acl) {
1668 qemu_acl_reset(acl);
1669 monitor_printf(mon, "acl: removed all rules\n");
1670 }
1671 }
1672
1673 static void hmp_acl_policy(Monitor *mon, const QDict *qdict)
1674 {
1675 const char *aclname = qdict_get_str(qdict, "aclname");
1676 const char *policy = qdict_get_str(qdict, "policy");
1677 qemu_acl *acl = find_acl(mon, aclname);
1678
1679 if (acl) {
1680 if (strcmp(policy, "allow") == 0) {
1681 acl->defaultDeny = 0;
1682 monitor_printf(mon, "acl: policy set to 'allow'\n");
1683 } else if (strcmp(policy, "deny") == 0) {
1684 acl->defaultDeny = 1;
1685 monitor_printf(mon, "acl: policy set to 'deny'\n");
1686 } else {
1687 monitor_printf(mon, "acl: unknown policy '%s', "
1688 "expected 'deny' or 'allow'\n", policy);
1689 }
1690 }
1691 }
1692
1693 static void hmp_acl_add(Monitor *mon, const QDict *qdict)
1694 {
1695 const char *aclname = qdict_get_str(qdict, "aclname");
1696 const char *match = qdict_get_str(qdict, "match");
1697 const char *policy = qdict_get_str(qdict, "policy");
1698 int has_index = qdict_haskey(qdict, "index");
1699 int index = qdict_get_try_int(qdict, "index", -1);
1700 qemu_acl *acl = find_acl(mon, aclname);
1701 int deny, ret;
1702
1703 if (acl) {
1704 if (strcmp(policy, "allow") == 0) {
1705 deny = 0;
1706 } else if (strcmp(policy, "deny") == 0) {
1707 deny = 1;
1708 } else {
1709 monitor_printf(mon, "acl: unknown policy '%s', "
1710 "expected 'deny' or 'allow'\n", policy);
1711 return;
1712 }
1713 if (has_index)
1714 ret = qemu_acl_insert(acl, deny, match, index);
1715 else
1716 ret = qemu_acl_append(acl, deny, match);
1717 if (ret < 0)
1718 monitor_printf(mon, "acl: unable to add acl entry\n");
1719 else
1720 monitor_printf(mon, "acl: added rule at position %d\n", ret);
1721 }
1722 }
1723
1724 static void hmp_acl_remove(Monitor *mon, const QDict *qdict)
1725 {
1726 const char *aclname = qdict_get_str(qdict, "aclname");
1727 const char *match = qdict_get_str(qdict, "match");
1728 qemu_acl *acl = find_acl(mon, aclname);
1729 int ret;
1730
1731 if (acl) {
1732 ret = qemu_acl_remove(acl, match);
1733 if (ret < 0)
1734 monitor_printf(mon, "acl: no matching acl entry\n");
1735 else
1736 monitor_printf(mon, "acl: removed rule at position %d\n", ret);
1737 }
1738 }
1739
1740 void qmp_getfd(const char *fdname, Error **errp)
1741 {
1742 mon_fd_t *monfd;
1743 int fd;
1744
1745 fd = qemu_chr_fe_get_msgfd(cur_mon->chr);
1746 if (fd == -1) {
1747 error_setg(errp, QERR_FD_NOT_SUPPLIED);
1748 return;
1749 }
1750
1751 if (qemu_isdigit(fdname[0])) {
1752 close(fd);
1753 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "fdname",
1754 "a name not starting with a digit");
1755 return;
1756 }
1757
1758 QLIST_FOREACH(monfd, &cur_mon->fds, next) {
1759 if (strcmp(monfd->name, fdname) != 0) {
1760 continue;
1761 }
1762
1763 close(monfd->fd);
1764 monfd->fd = fd;
1765 return;
1766 }
1767
1768 monfd = g_malloc0(sizeof(mon_fd_t));
1769 monfd->name = g_strdup(fdname);
1770 monfd->fd = fd;
1771
1772 QLIST_INSERT_HEAD(&cur_mon->fds, monfd, next);
1773 }
1774
1775 void qmp_closefd(const char *fdname, Error **errp)
1776 {
1777 mon_fd_t *monfd;
1778
1779 QLIST_FOREACH(monfd, &cur_mon->fds, next) {
1780 if (strcmp(monfd->name, fdname) != 0) {
1781 continue;
1782 }
1783
1784 QLIST_REMOVE(monfd, next);
1785 close(monfd->fd);
1786 g_free(monfd->name);
1787 g_free(monfd);
1788 return;
1789 }
1790
1791 error_setg(errp, QERR_FD_NOT_FOUND, fdname);
1792 }
1793
1794 static void hmp_loadvm(Monitor *mon, const QDict *qdict)
1795 {
1796 int saved_vm_running = runstate_is_running();
1797 const char *name = qdict_get_str(qdict, "name");
1798
1799 vm_stop(RUN_STATE_RESTORE_VM);
1800
1801 if (load_vmstate(name) == 0 && saved_vm_running) {
1802 vm_start();
1803 }
1804 }
1805
1806 int monitor_get_fd(Monitor *mon, const char *fdname, Error **errp)
1807 {
1808 mon_fd_t *monfd;
1809
1810 QLIST_FOREACH(monfd, &mon->fds, next) {
1811 int fd;
1812
1813 if (strcmp(monfd->name, fdname) != 0) {
1814 continue;
1815 }
1816
1817 fd = monfd->fd;
1818
1819 /* caller takes ownership of fd */
1820 QLIST_REMOVE(monfd, next);
1821 g_free(monfd->name);
1822 g_free(monfd);
1823
1824 return fd;
1825 }
1826
1827 error_setg(errp, "File descriptor named '%s' has not been found", fdname);
1828 return -1;
1829 }
1830
1831 static void monitor_fdset_cleanup(MonFdset *mon_fdset)
1832 {
1833 MonFdsetFd *mon_fdset_fd;
1834 MonFdsetFd *mon_fdset_fd_next;
1835
1836 QLIST_FOREACH_SAFE(mon_fdset_fd, &mon_fdset->fds, next, mon_fdset_fd_next) {
1837 if ((mon_fdset_fd->removed ||
1838 (QLIST_EMPTY(&mon_fdset->dup_fds) && mon_refcount == 0)) &&
1839 runstate_is_running()) {
1840 close(mon_fdset_fd->fd);
1841 g_free(mon_fdset_fd->opaque);
1842 QLIST_REMOVE(mon_fdset_fd, next);
1843 g_free(mon_fdset_fd);
1844 }
1845 }
1846
1847 if (QLIST_EMPTY(&mon_fdset->fds) && QLIST_EMPTY(&mon_fdset->dup_fds)) {
1848 QLIST_REMOVE(mon_fdset, next);
1849 g_free(mon_fdset);
1850 }
1851 }
1852
1853 static void monitor_fdsets_cleanup(void)
1854 {
1855 MonFdset *mon_fdset;
1856 MonFdset *mon_fdset_next;
1857
1858 QLIST_FOREACH_SAFE(mon_fdset, &mon_fdsets, next, mon_fdset_next) {
1859 monitor_fdset_cleanup(mon_fdset);
1860 }
1861 }
1862
1863 AddfdInfo *qmp_add_fd(bool has_fdset_id, int64_t fdset_id, bool has_opaque,
1864 const char *opaque, Error **errp)
1865 {
1866 int fd;
1867 Monitor *mon = cur_mon;
1868 AddfdInfo *fdinfo;
1869
1870 fd = qemu_chr_fe_get_msgfd(mon->chr);
1871 if (fd == -1) {
1872 error_setg(errp, QERR_FD_NOT_SUPPLIED);
1873 goto error;
1874 }
1875
1876 fdinfo = monitor_fdset_add_fd(fd, has_fdset_id, fdset_id,
1877 has_opaque, opaque, errp);
1878 if (fdinfo) {
1879 return fdinfo;
1880 }
1881
1882 error:
1883 if (fd != -1) {
1884 close(fd);
1885 }
1886 return NULL;
1887 }
1888
1889 void qmp_remove_fd(int64_t fdset_id, bool has_fd, int64_t fd, Error **errp)
1890 {
1891 MonFdset *mon_fdset;
1892 MonFdsetFd *mon_fdset_fd;
1893 char fd_str[60];
1894
1895 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
1896 if (mon_fdset->id != fdset_id) {
1897 continue;
1898 }
1899 QLIST_FOREACH(mon_fdset_fd, &mon_fdset->fds, next) {
1900 if (has_fd) {
1901 if (mon_fdset_fd->fd != fd) {
1902 continue;
1903 }
1904 mon_fdset_fd->removed = true;
1905 break;
1906 } else {
1907 mon_fdset_fd->removed = true;
1908 }
1909 }
1910 if (has_fd && !mon_fdset_fd) {
1911 goto error;
1912 }
1913 monitor_fdset_cleanup(mon_fdset);
1914 return;
1915 }
1916
1917 error:
1918 if (has_fd) {
1919 snprintf(fd_str, sizeof(fd_str), "fdset-id:%" PRId64 ", fd:%" PRId64,
1920 fdset_id, fd);
1921 } else {
1922 snprintf(fd_str, sizeof(fd_str), "fdset-id:%" PRId64, fdset_id);
1923 }
1924 error_setg(errp, QERR_FD_NOT_FOUND, fd_str);
1925 }
1926
1927 FdsetInfoList *qmp_query_fdsets(Error **errp)
1928 {
1929 MonFdset *mon_fdset;
1930 MonFdsetFd *mon_fdset_fd;
1931 FdsetInfoList *fdset_list = NULL;
1932
1933 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
1934 FdsetInfoList *fdset_info = g_malloc0(sizeof(*fdset_info));
1935 FdsetFdInfoList *fdsetfd_list = NULL;
1936
1937 fdset_info->value = g_malloc0(sizeof(*fdset_info->value));
1938 fdset_info->value->fdset_id = mon_fdset->id;
1939
1940 QLIST_FOREACH(mon_fdset_fd, &mon_fdset->fds, next) {
1941 FdsetFdInfoList *fdsetfd_info;
1942
1943 fdsetfd_info = g_malloc0(sizeof(*fdsetfd_info));
1944 fdsetfd_info->value = g_malloc0(sizeof(*fdsetfd_info->value));
1945 fdsetfd_info->value->fd = mon_fdset_fd->fd;
1946 if (mon_fdset_fd->opaque) {
1947 fdsetfd_info->value->has_opaque = true;
1948 fdsetfd_info->value->opaque = g_strdup(mon_fdset_fd->opaque);
1949 } else {
1950 fdsetfd_info->value->has_opaque = false;
1951 }
1952
1953 fdsetfd_info->next = fdsetfd_list;
1954 fdsetfd_list = fdsetfd_info;
1955 }
1956
1957 fdset_info->value->fds = fdsetfd_list;
1958
1959 fdset_info->next = fdset_list;
1960 fdset_list = fdset_info;
1961 }
1962
1963 return fdset_list;
1964 }
1965
1966 AddfdInfo *monitor_fdset_add_fd(int fd, bool has_fdset_id, int64_t fdset_id,
1967 bool has_opaque, const char *opaque,
1968 Error **errp)
1969 {
1970 MonFdset *mon_fdset = NULL;
1971 MonFdsetFd *mon_fdset_fd;
1972 AddfdInfo *fdinfo;
1973
1974 if (has_fdset_id) {
1975 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
1976 /* Break if match found or match impossible due to ordering by ID */
1977 if (fdset_id <= mon_fdset->id) {
1978 if (fdset_id < mon_fdset->id) {
1979 mon_fdset = NULL;
1980 }
1981 break;
1982 }
1983 }
1984 }
1985
1986 if (mon_fdset == NULL) {
1987 int64_t fdset_id_prev = -1;
1988 MonFdset *mon_fdset_cur = QLIST_FIRST(&mon_fdsets);
1989
1990 if (has_fdset_id) {
1991 if (fdset_id < 0) {
1992 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "fdset-id",
1993 "a non-negative value");
1994 return NULL;
1995 }
1996 /* Use specified fdset ID */
1997 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
1998 mon_fdset_cur = mon_fdset;
1999 if (fdset_id < mon_fdset_cur->id) {
2000 break;
2001 }
2002 }
2003 } else {
2004 /* Use first available fdset ID */
2005 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2006 mon_fdset_cur = mon_fdset;
2007 if (fdset_id_prev == mon_fdset_cur->id - 1) {
2008 fdset_id_prev = mon_fdset_cur->id;
2009 continue;
2010 }
2011 break;
2012 }
2013 }
2014
2015 mon_fdset = g_malloc0(sizeof(*mon_fdset));
2016 if (has_fdset_id) {
2017 mon_fdset->id = fdset_id;
2018 } else {
2019 mon_fdset->id = fdset_id_prev + 1;
2020 }
2021
2022 /* The fdset list is ordered by fdset ID */
2023 if (!mon_fdset_cur) {
2024 QLIST_INSERT_HEAD(&mon_fdsets, mon_fdset, next);
2025 } else if (mon_fdset->id < mon_fdset_cur->id) {
2026 QLIST_INSERT_BEFORE(mon_fdset_cur, mon_fdset, next);
2027 } else {
2028 QLIST_INSERT_AFTER(mon_fdset_cur, mon_fdset, next);
2029 }
2030 }
2031
2032 mon_fdset_fd = g_malloc0(sizeof(*mon_fdset_fd));
2033 mon_fdset_fd->fd = fd;
2034 mon_fdset_fd->removed = false;
2035 if (has_opaque) {
2036 mon_fdset_fd->opaque = g_strdup(opaque);
2037 }
2038 QLIST_INSERT_HEAD(&mon_fdset->fds, mon_fdset_fd, next);
2039
2040 fdinfo = g_malloc0(sizeof(*fdinfo));
2041 fdinfo->fdset_id = mon_fdset->id;
2042 fdinfo->fd = mon_fdset_fd->fd;
2043
2044 return fdinfo;
2045 }
2046
2047 int monitor_fdset_get_fd(int64_t fdset_id, int flags)
2048 {
2049 #ifndef _WIN32
2050 MonFdset *mon_fdset;
2051 MonFdsetFd *mon_fdset_fd;
2052 int mon_fd_flags;
2053
2054 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2055 if (mon_fdset->id != fdset_id) {
2056 continue;
2057 }
2058 QLIST_FOREACH(mon_fdset_fd, &mon_fdset->fds, next) {
2059 mon_fd_flags = fcntl(mon_fdset_fd->fd, F_GETFL);
2060 if (mon_fd_flags == -1) {
2061 return -1;
2062 }
2063
2064 if ((flags & O_ACCMODE) == (mon_fd_flags & O_ACCMODE)) {
2065 return mon_fdset_fd->fd;
2066 }
2067 }
2068 errno = EACCES;
2069 return -1;
2070 }
2071 #endif
2072
2073 errno = ENOENT;
2074 return -1;
2075 }
2076
2077 int monitor_fdset_dup_fd_add(int64_t fdset_id, int dup_fd)
2078 {
2079 MonFdset *mon_fdset;
2080 MonFdsetFd *mon_fdset_fd_dup;
2081
2082 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2083 if (mon_fdset->id != fdset_id) {
2084 continue;
2085 }
2086 QLIST_FOREACH(mon_fdset_fd_dup, &mon_fdset->dup_fds, next) {
2087 if (mon_fdset_fd_dup->fd == dup_fd) {
2088 return -1;
2089 }
2090 }
2091 mon_fdset_fd_dup = g_malloc0(sizeof(*mon_fdset_fd_dup));
2092 mon_fdset_fd_dup->fd = dup_fd;
2093 QLIST_INSERT_HEAD(&mon_fdset->dup_fds, mon_fdset_fd_dup, next);
2094 return 0;
2095 }
2096 return -1;
2097 }
2098
2099 static int monitor_fdset_dup_fd_find_remove(int dup_fd, bool remove)
2100 {
2101 MonFdset *mon_fdset;
2102 MonFdsetFd *mon_fdset_fd_dup;
2103
2104 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2105 QLIST_FOREACH(mon_fdset_fd_dup, &mon_fdset->dup_fds, next) {
2106 if (mon_fdset_fd_dup->fd == dup_fd) {
2107 if (remove) {
2108 QLIST_REMOVE(mon_fdset_fd_dup, next);
2109 if (QLIST_EMPTY(&mon_fdset->dup_fds)) {
2110 monitor_fdset_cleanup(mon_fdset);
2111 }
2112 return -1;
2113 } else {
2114 return mon_fdset->id;
2115 }
2116 }
2117 }
2118 }
2119 return -1;
2120 }
2121
2122 int monitor_fdset_dup_fd_find(int dup_fd)
2123 {
2124 return monitor_fdset_dup_fd_find_remove(dup_fd, false);
2125 }
2126
2127 void monitor_fdset_dup_fd_remove(int dup_fd)
2128 {
2129 monitor_fdset_dup_fd_find_remove(dup_fd, true);
2130 }
2131
2132 int monitor_fd_param(Monitor *mon, const char *fdname, Error **errp)
2133 {
2134 int fd;
2135 Error *local_err = NULL;
2136
2137 if (!qemu_isdigit(fdname[0]) && mon) {
2138 fd = monitor_get_fd(mon, fdname, &local_err);
2139 } else {
2140 fd = qemu_parse_fd(fdname);
2141 if (fd == -1) {
2142 error_setg(&local_err, "Invalid file descriptor number '%s'",
2143 fdname);
2144 }
2145 }
2146 if (local_err) {
2147 error_propagate(errp, local_err);
2148 assert(fd == -1);
2149 } else {
2150 assert(fd != -1);
2151 }
2152
2153 return fd;
2154 }
2155
2156 /* Please update hmp-commands.hx when adding or changing commands */
2157 static mon_cmd_t info_cmds[] = {
2158 #include "hmp-commands-info.h"
2159 { NULL, NULL, },
2160 };
2161
2162 /* mon_cmds and info_cmds would be sorted at runtime */
2163 static mon_cmd_t mon_cmds[] = {
2164 #include "hmp-commands.h"
2165 { NULL, NULL, },
2166 };
2167
2168 /*******************************************************************/
2169
2170 static const char *pch;
2171 static sigjmp_buf expr_env;
2172
2173
2174 static void GCC_FMT_ATTR(2, 3) QEMU_NORETURN
2175 expr_error(Monitor *mon, const char *fmt, ...)
2176 {
2177 va_list ap;
2178 va_start(ap, fmt);
2179 monitor_vprintf(mon, fmt, ap);
2180 monitor_printf(mon, "\n");
2181 va_end(ap);
2182 siglongjmp(expr_env, 1);
2183 }
2184
2185 /* return 0 if OK, -1 if not found */
2186 static int get_monitor_def(target_long *pval, const char *name)
2187 {
2188 const MonitorDef *md = target_monitor_defs();
2189 void *ptr;
2190 uint64_t tmp = 0;
2191 int ret;
2192
2193 if (md == NULL) {
2194 return -1;
2195 }
2196
2197 for(; md->name != NULL; md++) {
2198 if (compare_cmd(name, md->name)) {
2199 if (md->get_value) {
2200 *pval = md->get_value(md, md->offset);
2201 } else {
2202 CPUArchState *env = mon_get_cpu_env();
2203 ptr = (uint8_t *)env + md->offset;
2204 switch(md->type) {
2205 case MD_I32:
2206 *pval = *(int32_t *)ptr;
2207 break;
2208 case MD_TLONG:
2209 *pval = *(target_long *)ptr;
2210 break;
2211 default:
2212 *pval = 0;
2213 break;
2214 }
2215 }
2216 return 0;
2217 }
2218 }
2219
2220 ret = target_get_monitor_def(mon_get_cpu(), name, &tmp);
2221 if (!ret) {
2222 *pval = (target_long) tmp;
2223 }
2224
2225 return ret;
2226 }
2227
2228 static void next(void)
2229 {
2230 if (*pch != '\0') {
2231 pch++;
2232 while (qemu_isspace(*pch))
2233 pch++;
2234 }
2235 }
2236
2237 static int64_t expr_sum(Monitor *mon);
2238
2239 static int64_t expr_unary(Monitor *mon)
2240 {
2241 int64_t n;
2242 char *p;
2243 int ret;
2244
2245 switch(*pch) {
2246 case '+':
2247 next();
2248 n = expr_unary(mon);
2249 break;
2250 case '-':
2251 next();
2252 n = -expr_unary(mon);
2253 break;
2254 case '~':
2255 next();
2256 n = ~expr_unary(mon);
2257 break;
2258 case '(':
2259 next();
2260 n = expr_sum(mon);
2261 if (*pch != ')') {
2262 expr_error(mon, "')' expected");
2263 }
2264 next();
2265 break;
2266 case '\'':
2267 pch++;
2268 if (*pch == '\0')
2269 expr_error(mon, "character constant expected");
2270 n = *pch;
2271 pch++;
2272 if (*pch != '\'')
2273 expr_error(mon, "missing terminating \' character");
2274 next();
2275 break;
2276 case '$':
2277 {
2278 char buf[128], *q;
2279 target_long reg=0;
2280
2281 pch++;
2282 q = buf;
2283 while ((*pch >= 'a' && *pch <= 'z') ||
2284 (*pch >= 'A' && *pch <= 'Z') ||
2285 (*pch >= '0' && *pch <= '9') ||
2286 *pch == '_' || *pch == '.') {
2287 if ((q - buf) < sizeof(buf) - 1)
2288 *q++ = *pch;
2289 pch++;
2290 }
2291 while (qemu_isspace(*pch))
2292 pch++;
2293 *q = 0;
2294 ret = get_monitor_def(&reg, buf);
2295 if (ret < 0)
2296 expr_error(mon, "unknown register");
2297 n = reg;
2298 }
2299 break;
2300 case '\0':
2301 expr_error(mon, "unexpected end of expression");
2302 n = 0;
2303 break;
2304 default:
2305 errno = 0;
2306 n = strtoull(pch, &p, 0);
2307 if (errno == ERANGE) {
2308 expr_error(mon, "number too large");
2309 }
2310 if (pch == p) {
2311 expr_error(mon, "invalid char '%c' in expression", *p);
2312 }
2313 pch = p;
2314 while (qemu_isspace(*pch))
2315 pch++;
2316 break;
2317 }
2318 return n;
2319 }
2320
2321
2322 static int64_t expr_prod(Monitor *mon)
2323 {
2324 int64_t val, val2;
2325 int op;
2326
2327 val = expr_unary(mon);
2328 for(;;) {
2329 op = *pch;
2330 if (op != '*' && op != '/' && op != '%')
2331 break;
2332 next();
2333 val2 = expr_unary(mon);
2334 switch(op) {
2335 default:
2336 case '*':
2337 val *= val2;
2338 break;
2339 case '/':
2340 case '%':
2341 if (val2 == 0)
2342 expr_error(mon, "division by zero");
2343 if (op == '/')
2344 val /= val2;
2345 else
2346 val %= val2;
2347 break;
2348 }
2349 }
2350 return val;
2351 }
2352
2353 static int64_t expr_logic(Monitor *mon)
2354 {
2355 int64_t val, val2;
2356 int op;
2357
2358 val = expr_prod(mon);
2359 for(;;) {
2360 op = *pch;
2361 if (op != '&' && op != '|' && op != '^')
2362 break;
2363 next();
2364 val2 = expr_prod(mon);
2365 switch(op) {
2366 default:
2367 case '&':
2368 val &= val2;
2369 break;
2370 case '|':
2371 val |= val2;
2372 break;
2373 case '^':
2374 val ^= val2;
2375 break;
2376 }
2377 }
2378 return val;
2379 }
2380
2381 static int64_t expr_sum(Monitor *mon)
2382 {
2383 int64_t val, val2;
2384 int op;
2385
2386 val = expr_logic(mon);
2387 for(;;) {
2388 op = *pch;
2389 if (op != '+' && op != '-')
2390 break;
2391 next();
2392 val2 = expr_logic(mon);
2393 if (op == '+')
2394 val += val2;
2395 else
2396 val -= val2;
2397 }
2398 return val;
2399 }
2400
2401 static int get_expr(Monitor *mon, int64_t *pval, const char **pp)
2402 {
2403 pch = *pp;
2404 if (sigsetjmp(expr_env, 0)) {
2405 *pp = pch;
2406 return -1;
2407 }
2408 while (qemu_isspace(*pch))
2409 pch++;
2410 *pval = expr_sum(mon);
2411 *pp = pch;
2412 return 0;
2413 }
2414
2415 static int get_double(Monitor *mon, double *pval, const char **pp)
2416 {
2417 const char *p = *pp;
2418 char *tailp;
2419 double d;
2420
2421 d = strtod(p, &tailp);
2422 if (tailp == p) {
2423 monitor_printf(mon, "Number expected\n");
2424 return -1;
2425 }
2426 if (d != d || d - d != 0) {
2427 /* NaN or infinity */
2428 monitor_printf(mon, "Bad number\n");
2429 return -1;
2430 }
2431 *pval = d;
2432 *pp = tailp;
2433 return 0;
2434 }
2435
2436 /*
2437 * Store the command-name in cmdname, and return a pointer to
2438 * the remaining of the command string.
2439 */
2440 static const char *get_command_name(const char *cmdline,
2441 char *cmdname, size_t nlen)
2442 {
2443 size_t len;
2444 const char *p, *pstart;
2445
2446 p = cmdline;
2447 while (qemu_isspace(*p))
2448 p++;
2449 if (*p == '\0')
2450 return NULL;
2451 pstart = p;
2452 while (*p != '\0' && *p != '/' && !qemu_isspace(*p))
2453 p++;
2454 len = p - pstart;
2455 if (len > nlen - 1)
2456 len = nlen - 1;
2457 memcpy(cmdname, pstart, len);
2458 cmdname[len] = '\0';
2459 return p;
2460 }
2461
2462 /**
2463 * Read key of 'type' into 'key' and return the current
2464 * 'type' pointer.
2465 */
2466 static char *key_get_info(const char *type, char **key)
2467 {
2468 size_t len;
2469 char *p, *str;
2470
2471 if (*type == ',')
2472 type++;
2473
2474 p = strchr(type, ':');
2475 if (!p) {
2476 *key = NULL;
2477 return NULL;
2478 }
2479 len = p - type;
2480
2481 str = g_malloc(len + 1);
2482 memcpy(str, type, len);
2483 str[len] = '\0';
2484
2485 *key = str;
2486 return ++p;
2487 }
2488
2489 static int default_fmt_format = 'x';
2490 static int default_fmt_size = 4;
2491
2492 static int is_valid_option(const char *c, const char *typestr)
2493 {
2494 char option[3];
2495
2496 option[0] = '-';
2497 option[1] = *c;
2498 option[2] = '\0';
2499
2500 typestr = strstr(typestr, option);
2501 return (typestr != NULL);
2502 }
2503
2504 static const mon_cmd_t *search_dispatch_table(const mon_cmd_t *disp_table,
2505 const char *cmdname)
2506 {
2507 const mon_cmd_t *cmd;
2508
2509 for (cmd = disp_table; cmd->name != NULL; cmd++) {
2510 if (compare_cmd(cmdname, cmd->name)) {
2511 return cmd;
2512 }
2513 }
2514
2515 return NULL;
2516 }
2517
2518 /*
2519 * Parse command name from @cmdp according to command table @table.
2520 * If blank, return NULL.
2521 * Else, if no valid command can be found, report to @mon, and return
2522 * NULL.
2523 * Else, change @cmdp to point right behind the name, and return its
2524 * command table entry.
2525 * Do not assume the return value points into @table! It doesn't when
2526 * the command is found in a sub-command table.
2527 */
2528 static const mon_cmd_t *monitor_parse_command(Monitor *mon,
2529 const char **cmdp,
2530 mon_cmd_t *table)
2531 {
2532 const char *p;
2533 const mon_cmd_t *cmd;
2534 char cmdname[256];
2535
2536 /* extract the command name */
2537 p = get_command_name(*cmdp, cmdname, sizeof(cmdname));
2538 if (!p)
2539 return NULL;
2540
2541 cmd = search_dispatch_table(table, cmdname);
2542 if (!cmd) {
2543 monitor_printf(mon, "unknown command: '%.*s'\n",
2544 (int)(p - *cmdp), *cmdp);
2545 return NULL;
2546 }
2547
2548 /* filter out following useless space */
2549 while (qemu_isspace(*p)) {
2550 p++;
2551 }
2552
2553 *cmdp = p;
2554 /* search sub command */
2555 if (cmd->sub_table != NULL && *p != '\0') {
2556 return monitor_parse_command(mon, cmdp, cmd->sub_table);
2557 }
2558
2559 return cmd;
2560 }
2561
2562 /*
2563 * Parse arguments for @cmd.
2564 * If it can't be parsed, report to @mon, and return NULL.
2565 * Else, insert command arguments into a QDict, and return it.
2566 * Note: On success, caller has to free the QDict structure.
2567 */
2568
2569 static QDict *monitor_parse_arguments(Monitor *mon,
2570 const char **endp,
2571 const mon_cmd_t *cmd)
2572 {
2573 const char *typestr;
2574 char *key;
2575 int c;
2576 const char *p = *endp;
2577 char buf[1024];
2578 QDict *qdict = qdict_new();
2579
2580 /* parse the parameters */
2581 typestr = cmd->args_type;
2582 for(;;) {
2583 typestr = key_get_info(typestr, &key);
2584 if (!typestr)
2585 break;
2586 c = *typestr;
2587 typestr++;
2588 switch(c) {
2589 case 'F':
2590 case 'B':
2591 case 's':
2592 {
2593 int ret;
2594
2595 while (qemu_isspace(*p))
2596 p++;
2597 if (*typestr == '?') {
2598 typestr++;
2599 if (*p == '\0') {
2600 /* no optional string: NULL argument */
2601 break;
2602 }
2603 }
2604 ret = get_str(buf, sizeof(buf), &p);
2605 if (ret < 0) {
2606 switch(c) {
2607 case 'F':
2608 monitor_printf(mon, "%s: filename expected\n",
2609 cmd->name);
2610 break;
2611 case 'B':
2612 monitor_printf(mon, "%s: block device name expected\n",
2613 cmd->name);
2614 break;
2615 default:
2616 monitor_printf(mon, "%s: string expected\n", cmd->name);
2617 break;
2618 }
2619 goto fail;
2620 }
2621 qdict_put(qdict, key, qstring_from_str(buf));
2622 }
2623 break;
2624 case 'O':
2625 {
2626 QemuOptsList *opts_list;
2627 QemuOpts *opts;
2628
2629 opts_list = qemu_find_opts(key);
2630 if (!opts_list || opts_list->desc->name) {
2631 goto bad_type;
2632 }
2633 while (qemu_isspace(*p)) {
2634 p++;
2635 }
2636 if (!*p)
2637 break;
2638 if (get_str(buf, sizeof(buf), &p) < 0) {
2639 goto fail;
2640 }
2641 opts = qemu_opts_parse_noisily(opts_list, buf, true);
2642 if (!opts) {
2643 goto fail;
2644 }
2645 qemu_opts_to_qdict(opts, qdict);
2646 qemu_opts_del(opts);
2647 }
2648 break;
2649 case '/':
2650 {
2651 int count, format, size;
2652
2653 while (qemu_isspace(*p))
2654 p++;
2655 if (*p == '/') {
2656 /* format found */
2657 p++;
2658 count = 1;
2659 if (qemu_isdigit(*p)) {
2660 count = 0;
2661 while (qemu_isdigit(*p)) {
2662 count = count * 10 + (*p - '0');
2663 p++;
2664 }
2665 }
2666 size = -1;
2667 format = -1;
2668 for(;;) {
2669 switch(*p) {
2670 case 'o':
2671 case 'd':
2672 case 'u':
2673 case 'x':
2674 case 'i':
2675 case 'c':
2676 format = *p++;
2677 break;
2678 case 'b':
2679 size = 1;
2680 p++;
2681 break;
2682 case 'h':
2683 size = 2;
2684 p++;
2685 break;
2686 case 'w':
2687 size = 4;
2688 p++;
2689 break;
2690 case 'g':
2691 case 'L':
2692 size = 8;
2693 p++;
2694 break;
2695 default:
2696 goto next;
2697 }
2698 }
2699 next:
2700 if (*p != '\0' && !qemu_isspace(*p)) {
2701 monitor_printf(mon, "invalid char in format: '%c'\n",
2702 *p);
2703 goto fail;
2704 }
2705 if (format < 0)
2706 format = default_fmt_format;
2707 if (format != 'i') {
2708 /* for 'i', not specifying a size gives -1 as size */
2709 if (size < 0)
2710 size = default_fmt_size;
2711 default_fmt_size = size;
2712 }
2713 default_fmt_format = format;
2714 } else {
2715 count = 1;
2716 format = default_fmt_format;
2717 if (format != 'i') {
2718 size = default_fmt_size;
2719 } else {
2720 size = -1;
2721 }
2722 }
2723 qdict_put(qdict, "count", qint_from_int(count));
2724 qdict_put(qdict, "format", qint_from_int(format));
2725 qdict_put(qdict, "size", qint_from_int(size));
2726 }
2727 break;
2728 case 'i':
2729 case 'l':
2730 case 'M':
2731 {
2732 int64_t val;
2733
2734 while (qemu_isspace(*p))
2735 p++;
2736 if (*typestr == '?' || *typestr == '.') {
2737 if (*typestr == '?') {
2738 if (*p == '\0') {
2739 typestr++;
2740 break;
2741 }
2742 } else {
2743 if (*p == '.') {
2744 p++;
2745 while (qemu_isspace(*p))
2746 p++;
2747 } else {
2748 typestr++;
2749 break;
2750 }
2751 }
2752 typestr++;
2753 }
2754 if (get_expr(mon, &val, &p))
2755 goto fail;
2756 /* Check if 'i' is greater than 32-bit */
2757 if ((c == 'i') && ((val >> 32) & 0xffffffff)) {
2758 monitor_printf(mon, "\'%s\' has failed: ", cmd->name);
2759 monitor_printf(mon, "integer is for 32-bit values\n");
2760 goto fail;
2761 } else if (c == 'M') {
2762 if (val < 0) {
2763 monitor_printf(mon, "enter a positive value\n");
2764 goto fail;
2765 }
2766 val <<= 20;
2767 }
2768 qdict_put(qdict, key, qint_from_int(val));
2769 }
2770 break;
2771 case 'o':
2772 {
2773 int64_t val;
2774 char *end;
2775
2776 while (qemu_isspace(*p)) {
2777 p++;
2778 }
2779 if (*typestr == '?') {
2780 typestr++;
2781 if (*p == '\0') {
2782 break;
2783 }
2784 }
2785 val = qemu_strtosz(p, &end);
2786 if (val < 0) {
2787 monitor_printf(mon, "invalid size\n");
2788 goto fail;
2789 }
2790 qdict_put(qdict, key, qint_from_int(val));
2791 p = end;
2792 }
2793 break;
2794 case 'T':
2795 {
2796 double val;
2797
2798 while (qemu_isspace(*p))
2799 p++;
2800 if (*typestr == '?') {
2801 typestr++;
2802 if (*p == '\0') {
2803 break;
2804 }
2805 }
2806 if (get_double(mon, &val, &p) < 0) {
2807 goto fail;
2808 }
2809 if (p[0] && p[1] == 's') {
2810 switch (*p) {
2811 case 'm':
2812 val /= 1e3; p += 2; break;
2813 case 'u':
2814 val /= 1e6; p += 2; break;
2815 case 'n':
2816 val /= 1e9; p += 2; break;
2817 }
2818 }
2819 if (*p && !qemu_isspace(*p)) {
2820 monitor_printf(mon, "Unknown unit suffix\n");
2821 goto fail;
2822 }
2823 qdict_put(qdict, key, qfloat_from_double(val));
2824 }
2825 break;
2826 case 'b':
2827 {
2828 const char *beg;
2829 bool val;
2830
2831 while (qemu_isspace(*p)) {
2832 p++;
2833 }
2834 beg = p;
2835 while (qemu_isgraph(*p)) {
2836 p++;
2837 }
2838 if (p - beg == 2 && !memcmp(beg, "on", p - beg)) {
2839 val = true;
2840 } else if (p - beg == 3 && !memcmp(beg, "off", p - beg)) {
2841 val = false;
2842 } else {
2843 monitor_printf(mon, "Expected 'on' or 'off'\n");
2844 goto fail;
2845 }
2846 qdict_put(qdict, key, qbool_from_bool(val));
2847 }
2848 break;
2849 case '-':
2850 {
2851 const char *tmp = p;
2852 int skip_key = 0;
2853 /* option */
2854
2855 c = *typestr++;
2856 if (c == '\0')
2857 goto bad_type;
2858 while (qemu_isspace(*p))
2859 p++;
2860 if (*p == '-') {
2861 p++;
2862 if(c != *p) {
2863 if(!is_valid_option(p, typestr)) {
2864
2865 monitor_printf(mon, "%s: unsupported option -%c\n",
2866 cmd->name, *p);
2867 goto fail;
2868 } else {
2869 skip_key = 1;
2870 }
2871 }
2872 if(skip_key) {
2873 p = tmp;
2874 } else {
2875 /* has option */
2876 p++;
2877 qdict_put(qdict, key, qbool_from_bool(true));
2878 }
2879 }
2880 }
2881 break;
2882 case 'S':
2883 {
2884 /* package all remaining string */
2885 int len;
2886
2887 while (qemu_isspace(*p)) {
2888 p++;
2889 }
2890 if (*typestr == '?') {
2891 typestr++;
2892 if (*p == '\0') {
2893 /* no remaining string: NULL argument */
2894 break;
2895 }
2896 }
2897 len = strlen(p);
2898 if (len <= 0) {
2899 monitor_printf(mon, "%s: string expected\n",
2900 cmd->name);
2901 goto fail;
2902 }
2903 qdict_put(qdict, key, qstring_from_str(p));
2904 p += len;
2905 }
2906 break;
2907 default:
2908 bad_type:
2909 monitor_printf(mon, "%s: unknown type '%c'\n", cmd->name, c);
2910 goto fail;
2911 }
2912 g_free(key);
2913 key = NULL;
2914 }
2915 /* check that all arguments were parsed */
2916 while (qemu_isspace(*p))
2917 p++;
2918 if (*p != '\0') {
2919 monitor_printf(mon, "%s: extraneous characters at the end of line\n",
2920 cmd->name);
2921 goto fail;
2922 }
2923
2924 return qdict;
2925
2926 fail:
2927 QDECREF(qdict);
2928 g_free(key);
2929 return NULL;
2930 }
2931
2932 static void handle_hmp_command(Monitor *mon, const char *cmdline)
2933 {
2934 QDict *qdict;
2935 const mon_cmd_t *cmd;
2936
2937 cmd = monitor_parse_command(mon, &cmdline, mon->cmd_table);
2938 if (!cmd) {
2939 return;
2940 }
2941
2942 qdict = monitor_parse_arguments(mon, &cmdline, cmd);
2943 if (!qdict) {
2944 monitor_printf(mon, "Try \"help %s\" for more information\n",
2945 cmd->name);
2946 return;
2947 }
2948
2949 cmd->cmd(mon, qdict);
2950 QDECREF(qdict);
2951 }
2952
2953 static void cmd_completion(Monitor *mon, const char *name, const char *list)
2954 {
2955 const char *p, *pstart;
2956 char cmd[128];
2957 int len;
2958
2959 p = list;
2960 for(;;) {
2961 pstart = p;
2962 p = strchr(p, '|');
2963 if (!p)
2964 p = pstart + strlen(pstart);
2965 len = p - pstart;
2966 if (len > sizeof(cmd) - 2)
2967 len = sizeof(cmd) - 2;
2968 memcpy(cmd, pstart, len);
2969 cmd[len] = '\0';
2970 if (name[0] == '\0' || !strncmp(name, cmd, strlen(name))) {
2971 readline_add_completion(mon->rs, cmd);
2972 }
2973 if (*p == '\0')
2974 break;
2975 p++;
2976 }
2977 }
2978
2979 static void file_completion(Monitor *mon, const char *input)
2980 {
2981 DIR *ffs;
2982 struct dirent *d;
2983 char path[1024];
2984 char file[1024], file_prefix[1024];
2985 int input_path_len;
2986 const char *p;
2987
2988 p = strrchr(input, '/');
2989 if (!p) {
2990 input_path_len = 0;
2991 pstrcpy(file_prefix, sizeof(file_prefix), input);
2992 pstrcpy(path, sizeof(path), ".");
2993 } else {
2994 input_path_len = p - input + 1;
2995 memcpy(path, input, input_path_len);
2996 if (input_path_len > sizeof(path) - 1)
2997 input_path_len = sizeof(path) - 1;
2998 path[input_path_len] = '\0';
2999 pstrcpy(file_prefix, sizeof(file_prefix), p + 1);
3000 }
3001
3002 ffs = opendir(path);
3003 if (!ffs)
3004 return;
3005 for(;;) {
3006 struct stat sb;
3007 d = readdir(ffs);
3008 if (!d)
3009 break;
3010
3011 if (strcmp(d->d_name, ".") == 0 || strcmp(d->d_name, "..") == 0) {
3012 continue;
3013 }
3014
3015 if (strstart(d->d_name, file_prefix, NULL)) {
3016 memcpy(file, input, input_path_len);
3017 if (input_path_len < sizeof(file))
3018 pstrcpy(file + input_path_len, sizeof(file) - input_path_len,
3019 d->d_name);
3020 /* stat the file to find out if it's a directory.
3021 * In that case add a slash to speed up typing long paths
3022 */
3023 if (stat(file, &sb) == 0 && S_ISDIR(sb.st_mode)) {
3024 pstrcat(file, sizeof(file), "/");
3025 }
3026 readline_add_completion(mon->rs, file);
3027 }
3028 }
3029 closedir(ffs);
3030 }
3031
3032 static const char *next_arg_type(const char *typestr)
3033 {
3034 const char *p = strchr(typestr, ':');
3035 return (p != NULL ? ++p : typestr);
3036 }
3037
3038 static void add_completion_option(ReadLineState *rs, const char *str,
3039 const char *option)
3040 {
3041 if (!str || !option) {
3042 return;
3043 }
3044 if (!strncmp(option, str, strlen(str))) {
3045 readline_add_completion(rs, option);
3046 }
3047 }
3048
3049 void chardev_add_completion(ReadLineState *rs, int nb_args, const char *str)
3050 {
3051 size_t len;
3052 ChardevBackendInfoList *list, *start;
3053
3054 if (nb_args != 2) {
3055 return;
3056 }
3057 len = strlen(str);
3058 readline_set_completion_index(rs, len);
3059
3060 start = list = qmp_query_chardev_backends(NULL);
3061 while (list) {
3062 const char *chr_name = list->value->name;
3063
3064 if (!strncmp(chr_name, str, len)) {
3065 readline_add_completion(rs, chr_name);
3066 }
3067 list = list->next;
3068 }
3069 qapi_free_ChardevBackendInfoList(start);
3070 }
3071
3072 void netdev_add_completion(ReadLineState *rs, int nb_args, const char *str)
3073 {
3074 size_t len;
3075 int i;
3076
3077 if (nb_args != 2) {
3078 return;
3079 }
3080 len = strlen(str);
3081 readline_set_completion_index(rs, len);
3082 for (i = 0; NetClientDriver_lookup[i]; i++) {
3083 add_completion_option(rs, str, NetClientDriver_lookup[i]);
3084 }
3085 }
3086
3087 void device_add_completion(ReadLineState *rs, int nb_args, const char *str)
3088 {
3089 GSList *list, *elt;
3090 size_t len;
3091
3092 if (nb_args != 2) {
3093 return;
3094 }
3095
3096 len = strlen(str);
3097 readline_set_completion_index(rs, len);
3098 list = elt = object_class_get_list(TYPE_DEVICE, false);
3099 while (elt) {
3100 const char *name;
3101 DeviceClass *dc = OBJECT_CLASS_CHECK(DeviceClass, elt->data,
3102 TYPE_DEVICE);
3103 name = object_class_get_name(OBJECT_CLASS(dc));
3104
3105 if (!dc->cannot_instantiate_with_device_add_yet
3106 && !strncmp(name, str, len)) {
3107 readline_add_completion(rs, name);
3108 }
3109 elt = elt->next;
3110 }
3111 g_slist_free(list);
3112 }
3113
3114 void object_add_completion(ReadLineState *rs, int nb_args, const char *str)
3115 {
3116 GSList *list, *elt;
3117 size_t len;
3118
3119 if (nb_args != 2) {
3120 return;
3121 }
3122
3123 len = strlen(str);
3124 readline_set_completion_index(rs, len);
3125 list = elt = object_class_get_list(TYPE_USER_CREATABLE, false);
3126 while (elt) {
3127 const char *name;
3128
3129 name = object_class_get_name(OBJECT_CLASS(elt->data));
3130 if (!strncmp(name, str, len) && strcmp(name, TYPE_USER_CREATABLE)) {
3131 readline_add_completion(rs, name);
3132 }
3133 elt = elt->next;
3134 }
3135 g_slist_free(list);
3136 }
3137
3138 static void peripheral_device_del_completion(ReadLineState *rs,
3139 const char *str, size_t len)
3140 {
3141 Object *peripheral = container_get(qdev_get_machine(), "/peripheral");
3142 GSList *list, *item;
3143
3144 list = qdev_build_hotpluggable_device_list(peripheral);
3145 if (!list) {
3146 return;
3147 }
3148
3149 for (item = list; item; item = g_slist_next(item)) {
3150 DeviceState *dev = item->data;
3151
3152 if (dev->id && !strncmp(str, dev->id, len)) {
3153 readline_add_completion(rs, dev->id);
3154 }
3155 }
3156
3157 g_slist_free(list);
3158 }
3159
3160 void chardev_remove_completion(ReadLineState *rs, int nb_args, const char *str)
3161 {
3162 size_t len;
3163 ChardevInfoList *list, *start;
3164
3165 if (nb_args != 2) {
3166 return;
3167 }
3168 len = strlen(str);
3169 readline_set_completion_index(rs, len);
3170
3171 start = list = qmp_query_chardev(NULL);
3172 while (list) {
3173 ChardevInfo *chr = list->value;
3174
3175 if (!strncmp(chr->label, str, len)) {
3176 readline_add_completion(rs, chr->label);
3177 }
3178 list = list->next;
3179 }
3180 qapi_free_ChardevInfoList(start);
3181 }
3182
3183 static void ringbuf_completion(ReadLineState *rs, const char *str)
3184 {
3185 size_t len;
3186 ChardevInfoList *list, *start;
3187
3188 len = strlen(str);
3189 readline_set_completion_index(rs, len);
3190
3191 start = list = qmp_query_chardev(NULL);
3192 while (list) {
3193 ChardevInfo *chr_info = list->value;
3194
3195 if (!strncmp(chr_info->label, str, len)) {
3196 CharDriverState *chr = qemu_chr_find(chr_info->label);
3197 if (chr && chr_is_ringbuf(chr)) {
3198 readline_add_completion(rs, chr_info->label);
3199 }
3200 }
3201 list = list->next;
3202 }
3203 qapi_free_ChardevInfoList(start);
3204 }
3205
3206 void ringbuf_write_completion(ReadLineState *rs, int nb_args, const char *str)
3207 {
3208 if (nb_args != 2) {
3209 return;
3210 }
3211 ringbuf_completion(rs, str);
3212 }
3213
3214 void device_del_completion(ReadLineState *rs, int nb_args, const char *str)
3215 {
3216 size_t len;
3217
3218 if (nb_args != 2) {
3219 return;
3220 }
3221
3222 len = strlen(str);
3223 readline_set_completion_index(rs, len);
3224 peripheral_device_del_completion(rs, str, len);
3225 }
3226
3227 void object_del_completion(ReadLineState *rs, int nb_args, const char *str)
3228 {
3229 ObjectPropertyInfoList *list, *start;
3230 size_t len;
3231
3232 if (nb_args != 2) {
3233 return;
3234 }
3235 len = strlen(str);
3236 readline_set_completion_index(rs, len);
3237
3238 start = list = qmp_qom_list("/objects", NULL);
3239 while (list) {
3240 ObjectPropertyInfo *info = list->value;
3241
3242 if (!strncmp(info->type, "child<", 5)
3243 && !strncmp(info->name, str, len)) {
3244 readline_add_completion(rs, info->name);
3245 }
3246 list = list->next;
3247 }
3248 qapi_free_ObjectPropertyInfoList(start);
3249 }
3250
3251 void sendkey_completion(ReadLineState *rs, int nb_args, const char *str)
3252 {
3253 int i;
3254 char *sep;
3255 size_t len;
3256
3257 if (nb_args != 2) {
3258 return;
3259 }
3260 sep = strrchr(str, '-');
3261 if (sep) {
3262 str = sep + 1;
3263 }
3264 len = strlen(str);
3265 readline_set_completion_index(rs, len);
3266 for (i = 0; i < Q_KEY_CODE__MAX; i++) {
3267 if (!strncmp(str, QKeyCode_lookup[i], len)) {
3268 readline_add_completion(rs, QKeyCode_lookup[i]);
3269 }
3270 }
3271 }
3272
3273 void set_link_completion(ReadLineState *rs, int nb_args, const char *str)
3274 {
3275 size_t len;
3276
3277 len = strlen(str);
3278 readline_set_completion_index(rs, len);
3279 if (nb_args == 2) {
3280 NetClientState *ncs[MAX_QUEUE_NUM];
3281 int count, i;
3282 count = qemu_find_net_clients_except(NULL, ncs,
3283 NET_CLIENT_DRIVER_NONE,
3284 MAX_QUEUE_NUM);
3285 for (i = 0; i < MIN(count, MAX_QUEUE_NUM); i++) {
3286 const char *name = ncs[i]->name;
3287 if (!strncmp(str, name, len)) {
3288 readline_add_completion(rs, name);
3289 }
3290 }
3291 } else if (nb_args == 3) {
3292 add_completion_option(rs, str, "on");
3293 add_completion_option(rs, str, "off");
3294 }
3295 }
3296
3297 void netdev_del_completion(ReadLineState *rs, int nb_args, const char *str)
3298 {
3299 int len, count, i;
3300 NetClientState *ncs[MAX_QUEUE_NUM];
3301
3302 if (nb_args != 2) {
3303 return;
3304 }
3305
3306 len = strlen(str);
3307 readline_set_completion_index(rs, len);
3308 count = qemu_find_net_clients_except(NULL, ncs, NET_CLIENT_DRIVER_NIC,
3309 MAX_QUEUE_NUM);
3310 for (i = 0; i < MIN(count, MAX_QUEUE_NUM); i++) {
3311 QemuOpts *opts;
3312 const char *name = ncs[i]->name;
3313 if (strncmp(str, name, len)) {
3314 continue;
3315 }
3316 opts = qemu_opts_find(qemu_find_opts_err("netdev", NULL), name);
3317 if (opts) {
3318 readline_add_completion(rs, name);
3319 }
3320 }
3321 }
3322
3323 void info_trace_events_completion(ReadLineState *rs, int nb_args, const char *str)
3324 {
3325 size_t len;
3326
3327 len = strlen(str);
3328 readline_set_completion_index(rs, len);
3329 if (nb_args == 2) {
3330 TraceEventID id;
3331 for (id = 0; id < trace_event_count(); id++) {
3332 const char *event_name = trace_event_get_name(trace_event_id(id));
3333 if (!strncmp(str, event_name, len)) {
3334 readline_add_completion(rs, event_name);
3335 }
3336 }
3337 }
3338 }
3339
3340 void trace_event_completion(ReadLineState *rs, int nb_args, const char *str)
3341 {
3342 size_t len;
3343
3344 len = strlen(str);
3345 readline_set_completion_index(rs, len);
3346 if (nb_args == 2) {
3347 TraceEventID id;
3348 for (id = 0; id < trace_event_count(); id++) {
3349 const char *event_name = trace_event_get_name(trace_event_id(id));
3350 if (!strncmp(str, event_name, len)) {
3351 readline_add_completion(rs, event_name);
3352 }
3353 }
3354 } else if (nb_args == 3) {
3355 add_completion_option(rs, str, "on");
3356 add_completion_option(rs, str, "off");
3357 }
3358 }
3359
3360 void watchdog_action_completion(ReadLineState *rs, int nb_args, const char *str)
3361 {
3362 int i;
3363
3364 if (nb_args != 2) {
3365 return;
3366 }
3367 readline_set_completion_index(rs, strlen(str));
3368 for (i = 0; WatchdogExpirationAction_lookup[i]; i++) {
3369 add_completion_option(rs, str, WatchdogExpirationAction_lookup[i]);
3370 }
3371 }
3372
3373 void migrate_set_capability_completion(ReadLineState *rs, int nb_args,
3374 const char *str)
3375 {
3376 size_t len;
3377
3378 len = strlen(str);
3379 readline_set_completion_index(rs, len);
3380 if (nb_args == 2) {
3381 int i;
3382 for (i = 0; i < MIGRATION_CAPABILITY__MAX; i++) {
3383 const char *name = MigrationCapability_lookup[i];
3384 if (!strncmp(str, name, len)) {
3385 readline_add_completion(rs, name);
3386 }
3387 }
3388 } else if (nb_args == 3) {
3389 add_completion_option(rs, str, "on");
3390 add_completion_option(rs, str, "off");
3391 }
3392 }
3393
3394 void migrate_set_parameter_completion(ReadLineState *rs, int nb_args,
3395 const char *str)
3396 {
3397 size_t len;
3398
3399 len = strlen(str);
3400 readline_set_completion_index(rs, len);
3401 if (nb_args == 2) {
3402 int i;
3403 for (i = 0; i < MIGRATION_PARAMETER__MAX; i++) {
3404 const char *name = MigrationParameter_lookup[i];
3405 if (!strncmp(str, name, len)) {
3406 readline_add_completion(rs, name);
3407 }
3408 }
3409 }
3410 }
3411
3412 void host_net_add_completion(ReadLineState *rs, int nb_args, const char *str)
3413 {
3414 int i;
3415 size_t len;
3416 if (nb_args != 2) {
3417 return;
3418 }
3419 len = strlen(str);
3420 readline_set_completion_index(rs, len);
3421 for (i = 0; host_net_devices[i]; i++) {
3422 if (!strncmp(host_net_devices[i], str, len)) {
3423 readline_add_completion(rs, host_net_devices[i]);
3424 }
3425 }
3426 }
3427
3428 void host_net_remove_completion(ReadLineState *rs, int nb_args, const char *str)
3429 {
3430 NetClientState *ncs[MAX_QUEUE_NUM];
3431 int count, i, len;
3432
3433 len = strlen(str);
3434 readline_set_completion_index(rs, len);
3435 if (nb_args == 2) {
3436 count = qemu_find_net_clients_except(NULL, ncs,
3437 NET_CLIENT_DRIVER_NONE,
3438 MAX_QUEUE_NUM);
3439 for (i = 0; i < MIN(count, MAX_QUEUE_NUM); i++) {
3440 int id;
3441 char name[16];
3442
3443 if (net_hub_id_for_client(ncs[i], &id)) {
3444 continue;
3445 }
3446 snprintf(name, sizeof(name), "%d", id);
3447 if (!strncmp(str, name, len)) {
3448 readline_add_completion(rs, name);
3449 }
3450 }
3451 return;
3452 } else if (nb_args == 3) {
3453 count = qemu_find_net_clients_except(NULL, ncs,
3454 NET_CLIENT_DRIVER_NIC,
3455 MAX_QUEUE_NUM);
3456 for (i = 0; i < MIN(count, MAX_QUEUE_NUM); i++) {
3457 int id;
3458 const char *name;
3459
3460 if (ncs[i]->info->type == NET_CLIENT_DRIVER_HUBPORT ||
3461 net_hub_id_for_client(ncs[i], &id)) {
3462 continue;
3463 }
3464 name = ncs[i]->name;
3465 if (!strncmp(str, name, len)) {
3466 readline_add_completion(rs, name);
3467 }
3468 }
3469 return;
3470 }
3471 }
3472
3473 static void vm_completion(ReadLineState *rs, const char *str)
3474 {
3475 size_t len;
3476 BlockDriverState *bs;
3477 BdrvNextIterator it;
3478
3479 len = strlen(str);
3480 readline_set_completion_index(rs, len);
3481
3482 for (bs = bdrv_first(&it); bs; bs = bdrv_next(&it)) {
3483 SnapshotInfoList *snapshots, *snapshot;
3484 AioContext *ctx = bdrv_get_aio_context(bs);
3485 bool ok = false;
3486
3487 aio_context_acquire(ctx);
3488 if (bdrv_can_snapshot(bs)) {
3489 ok = bdrv_query_snapshot_info_list(bs, &snapshots, NULL) == 0;
3490 }
3491 aio_context_release(ctx);
3492 if (!ok) {
3493 continue;
3494 }
3495
3496 snapshot = snapshots;
3497 while (snapshot) {
3498 char *completion = snapshot->value->name;
3499 if (!strncmp(str, completion, len)) {
3500 readline_add_completion(rs, completion);
3501 }
3502 completion = snapshot->value->id;
3503 if (!strncmp(str, completion, len)) {
3504 readline_add_completion(rs, completion);
3505 }
3506 snapshot = snapshot->next;
3507 }
3508 qapi_free_SnapshotInfoList(snapshots);
3509 }
3510
3511 }
3512
3513 void delvm_completion(ReadLineState *rs, int nb_args, const char *str)
3514 {
3515 if (nb_args == 2) {
3516 vm_completion(rs, str);
3517 }
3518 }
3519
3520 void loadvm_completion(ReadLineState *rs, int nb_args, const char *str)
3521 {
3522 if (nb_args == 2) {
3523 vm_completion(rs, str);
3524 }
3525 }
3526
3527 static void monitor_find_completion_by_table(Monitor *mon,
3528 const mon_cmd_t *cmd_table,
3529 char **args,
3530 int nb_args)
3531 {
3532 const char *cmdname;
3533 int i;
3534 const char *ptype, *str, *name;
3535 const mon_cmd_t *cmd;
3536 BlockBackend *blk = NULL;
3537
3538 if (nb_args <= 1) {
3539 /* command completion */
3540 if (nb_args == 0)
3541 cmdname = "";
3542 else
3543 cmdname = args[0];
3544 readline_set_completion_index(mon->rs, strlen(cmdname));
3545 for (cmd = cmd_table; cmd->name != NULL; cmd++) {
3546 cmd_completion(mon, cmdname, cmd->name);
3547 }
3548 } else {
3549 /* find the command */
3550 for (cmd = cmd_table; cmd->name != NULL; cmd++) {
3551 if (compare_cmd(args[0], cmd->name)) {
3552 break;
3553 }
3554 }
3555 if (!cmd->name) {
3556 return;
3557 }
3558
3559 if (cmd->sub_table) {
3560 /* do the job again */
3561 monitor_find_completion_by_table(mon, cmd->sub_table,
3562 &args[1], nb_args - 1);
3563 return;
3564 }
3565 if (cmd->command_completion) {
3566 cmd->command_completion(mon->rs, nb_args, args[nb_args - 1]);
3567 return;
3568 }
3569
3570 ptype = next_arg_type(cmd->args_type);
3571 for(i = 0; i < nb_args - 2; i++) {
3572 if (*ptype != '\0') {
3573 ptype = next_arg_type(ptype);
3574 while (*ptype == '?')
3575 ptype = next_arg_type(ptype);
3576 }
3577 }
3578 str = args[nb_args - 1];
3579 while (*ptype == '-' && ptype[1] != '\0') {
3580 ptype = next_arg_type(ptype);
3581 }
3582 switch(*ptype) {
3583 case 'F':
3584 /* file completion */
3585 readline_set_completion_index(mon->rs, strlen(str));
3586 file_completion(mon, str);
3587 break;
3588 case 'B':
3589 /* block device name completion */
3590 readline_set_completion_index(mon->rs, strlen(str));
3591 while ((blk = blk_next(blk)) != NULL) {
3592 name = blk_name(blk);
3593 if (str[0] == '\0' ||
3594 !strncmp(name, str, strlen(str))) {
3595 readline_add_completion(mon->rs, name);
3596 }
3597 }
3598 break;
3599 case 's':
3600 case 'S':
3601 if (!strcmp(cmd->name, "help|?")) {
3602 monitor_find_completion_by_table(mon, cmd_table,
3603 &args[1], nb_args - 1);
3604 }
3605 break;
3606 default:
3607 break;
3608 }
3609 }
3610 }
3611
3612 static void monitor_find_completion(void *opaque,
3613 const char *cmdline)
3614 {
3615 Monitor *mon = opaque;
3616 char *args[MAX_ARGS];
3617 int nb_args, len;
3618
3619 /* 1. parse the cmdline */
3620 if (parse_cmdline(cmdline, &nb_args, args) < 0) {
3621 return;
3622 }
3623
3624 /* if the line ends with a space, it means we want to complete the
3625 next arg */
3626 len = strlen(cmdline);
3627 if (len > 0 && qemu_isspace(cmdline[len - 1])) {
3628 if (nb_args >= MAX_ARGS) {
3629 goto cleanup;
3630 }
3631 args[nb_args++] = g_strdup("");
3632 }
3633
3634 /* 2. auto complete according to args */
3635 monitor_find_completion_by_table(mon, mon->cmd_table, args, nb_args);
3636
3637 cleanup:
3638 free_cmdline_args(args, nb_args);
3639 }
3640
3641 static int monitor_can_read(void *opaque)
3642 {
3643 Monitor *mon = opaque;
3644
3645 return (mon->suspend_cnt == 0) ? 1 : 0;
3646 }
3647
3648 static bool invalid_qmp_mode(const Monitor *mon, const char *cmd,
3649 Error **errp)
3650 {
3651 bool is_cap = g_str_equal(cmd, "qmp_capabilities");
3652
3653 if (is_cap && mon->qmp.in_command_mode) {
3654 error_set(errp, ERROR_CLASS_COMMAND_NOT_FOUND,
3655 "Capabilities negotiation is already complete, command "
3656 "'%s' ignored", cmd);
3657 return true;
3658 }
3659 if (!is_cap && !mon->qmp.in_command_mode) {
3660 error_set(errp, ERROR_CLASS_COMMAND_NOT_FOUND,
3661 "Expecting capabilities negotiation with "
3662 "'qmp_capabilities' before command '%s'", cmd);
3663 return true;
3664 }
3665 return false;
3666 }
3667
3668 /*
3669 * Input object checking rules
3670 *
3671 * 1. Input object must be a dict
3672 * 2. The "execute" key must exist
3673 * 3. The "execute" key must be a string
3674 * 4. If the "arguments" key exists, it must be a dict
3675 * 5. If the "id" key exists, it can be anything (ie. json-value)
3676 * 6. Any argument not listed above is considered invalid
3677 */
3678 static QDict *qmp_check_input_obj(QObject *input_obj, Error **errp)
3679 {
3680 const QDictEntry *ent;
3681 int has_exec_key = 0;
3682 QDict *input_dict;
3683
3684 if (qobject_type(input_obj) != QTYPE_QDICT) {
3685 error_setg(errp, QERR_QMP_BAD_INPUT_OBJECT, "object");
3686 return NULL;
3687 }
3688
3689 input_dict = qobject_to_qdict(input_obj);
3690
3691 for (ent = qdict_first(input_dict); ent; ent = qdict_next(input_dict, ent)){
3692 const char *arg_name = qdict_entry_key(ent);
3693 const QObject *arg_obj = qdict_entry_value(ent);
3694
3695 if (!strcmp(arg_name, "execute")) {
3696 if (qobject_type(arg_obj) != QTYPE_QSTRING) {
3697 error_setg(errp, QERR_QMP_BAD_INPUT_OBJECT_MEMBER,
3698 "execute", "string");
3699 return NULL;
3700 }
3701 has_exec_key = 1;
3702 } else if (!strcmp(arg_name, "arguments")) {
3703 if (qobject_type(arg_obj) != QTYPE_QDICT) {
3704 error_setg(errp, QERR_QMP_BAD_INPUT_OBJECT_MEMBER,
3705 "arguments", "object");
3706 return NULL;
3707 }
3708 } else if (!strcmp(arg_name, "id")) {
3709 /* Any string is acceptable as "id", so nothing to check */
3710 } else {
3711 error_setg(errp, QERR_QMP_EXTRA_MEMBER, arg_name);
3712 return NULL;
3713 }
3714 }
3715
3716 if (!has_exec_key) {
3717 error_setg(errp, QERR_QMP_BAD_INPUT_OBJECT, "execute");
3718 return NULL;
3719 }
3720
3721 return input_dict;
3722 }
3723
3724 static void handle_qmp_command(JSONMessageParser *parser, GQueue *tokens)
3725 {
3726 QObject *req, *rsp = NULL, *id = NULL;
3727 QDict *qdict = NULL;
3728 const char *cmd_name;
3729 Monitor *mon = cur_mon;
3730 Error *err = NULL;
3731
3732 req = json_parser_parse_err(tokens, NULL, &err);
3733 if (err || !req || qobject_type(req) != QTYPE_QDICT) {
3734 if (!err) {
3735 error_setg(&err, QERR_JSON_PARSING);
3736 }
3737 goto err_out;
3738 }
3739
3740 qdict = qmp_check_input_obj(req, &err);
3741 if (!qdict) {
3742 goto err_out;
3743 }
3744
3745 id = qdict_get(qdict, "id");
3746 qobject_incref(id);
3747 qdict_del(qdict, "id");
3748
3749 cmd_name = qdict_get_str(qdict, "execute");
3750 trace_handle_qmp_command(mon, cmd_name);
3751
3752 if (invalid_qmp_mode(mon, cmd_name, &err)) {
3753 goto err_out;
3754 }
3755
3756 rsp = qmp_dispatch(req);
3757
3758 err_out:
3759 if (err) {
3760 qdict = qdict_new();
3761 qdict_put_obj(qdict, "error", qmp_build_error_object(err));
3762 error_free(err);
3763 rsp = QOBJECT(qdict);
3764 }
3765
3766 if (rsp) {
3767 if (id) {
3768 qdict_put_obj(qobject_to_qdict(rsp), "id", id);
3769 id = NULL;
3770 }
3771
3772 monitor_json_emitter(mon, rsp);
3773 }
3774
3775 qobject_decref(id);
3776 qobject_decref(rsp);
3777 qobject_decref(req);
3778 }
3779
3780 static void monitor_qmp_read(void *opaque, const uint8_t *buf, int size)
3781 {
3782 Monitor *old_mon = cur_mon;
3783
3784 cur_mon = opaque;
3785
3786 json_message_parser_feed(&cur_mon->qmp.parser, (const char *) buf, size);
3787
3788 cur_mon = old_mon;
3789 }
3790
3791 static void monitor_read(void *opaque, const uint8_t *buf, int size)
3792 {
3793 Monitor *old_mon = cur_mon;
3794 int i;
3795
3796 cur_mon = opaque;
3797
3798 if (cur_mon->rs) {
3799 for (i = 0; i < size; i++)
3800 readline_handle_byte(cur_mon->rs, buf[i]);
3801 } else {
3802 if (size == 0 || buf[size - 1] != 0)
3803 monitor_printf(cur_mon, "corrupted command\n");
3804 else
3805 handle_hmp_command(cur_mon, (char *)buf);
3806 }
3807
3808 cur_mon = old_mon;
3809 }
3810
3811 static void monitor_command_cb(void *opaque, const char *cmdline,
3812 void *readline_opaque)
3813 {
3814 Monitor *mon = opaque;
3815
3816 monitor_suspend(mon);
3817 handle_hmp_command(mon, cmdline);
3818 monitor_resume(mon);
3819 }
3820
3821 int monitor_suspend(Monitor *mon)
3822 {
3823 if (!mon->rs)
3824 return -ENOTTY;
3825 mon->suspend_cnt++;
3826 return 0;
3827 }
3828
3829 void monitor_resume(Monitor *mon)
3830 {
3831 if (!mon->rs)
3832 return;
3833 if (--mon->suspend_cnt == 0)
3834 readline_show_prompt(mon->rs);
3835 }
3836
3837 static QObject *get_qmp_greeting(void)
3838 {
3839 QObject *ver = NULL;
3840
3841 qmp_marshal_query_version(NULL, &ver, NULL);
3842
3843 return qobject_from_jsonf("{'QMP': {'version': %p, 'capabilities': []}}",
3844 ver);
3845 }
3846
3847 static void monitor_qmp_event(void *opaque, int event)
3848 {
3849 QObject *data;
3850 Monitor *mon = opaque;
3851
3852 switch (event) {
3853 case CHR_EVENT_OPENED:
3854 mon->qmp.in_command_mode = false;
3855 data = get_qmp_greeting();
3856 monitor_json_emitter(mon, data);
3857 qobject_decref(data);
3858 mon_refcount++;
3859 break;
3860 case CHR_EVENT_CLOSED:
3861 json_message_parser_destroy(&mon->qmp.parser);
3862 json_message_parser_init(&mon->qmp.parser, handle_qmp_command);
3863 mon_refcount--;
3864 monitor_fdsets_cleanup();
3865 break;
3866 }
3867 }
3868
3869 static void monitor_event(void *opaque, int event)
3870 {
3871 Monitor *mon = opaque;
3872
3873 switch (event) {
3874 case CHR_EVENT_MUX_IN:
3875 qemu_mutex_lock(&mon->out_lock);
3876 mon->mux_out = 0;
3877 qemu_mutex_unlock(&mon->out_lock);
3878 if (mon->reset_seen) {
3879 readline_restart(mon->rs);
3880 monitor_resume(mon);
3881 monitor_flush(mon);
3882 } else {
3883 mon->suspend_cnt = 0;
3884 }
3885 break;
3886
3887 case CHR_EVENT_MUX_OUT:
3888 if (mon->reset_seen) {
3889 if (mon->suspend_cnt == 0) {
3890 monitor_printf(mon, "\n");
3891 }
3892 monitor_flush(mon);
3893 monitor_suspend(mon);
3894 } else {
3895 mon->suspend_cnt++;
3896 }
3897 qemu_mutex_lock(&mon->out_lock);
3898 mon->mux_out = 1;
3899 qemu_mutex_unlock(&mon->out_lock);
3900 break;
3901
3902 case CHR_EVENT_OPENED:
3903 monitor_printf(mon, "QEMU %s monitor - type 'help' for more "
3904 "information\n", QEMU_VERSION);
3905 if (!mon->mux_out) {
3906 readline_restart(mon->rs);
3907 readline_show_prompt(mon->rs);
3908 }
3909 mon->reset_seen = 1;
3910 mon_refcount++;
3911 break;
3912
3913 case CHR_EVENT_CLOSED:
3914 mon_refcount--;
3915 monitor_fdsets_cleanup();
3916 break;
3917 }
3918 }
3919
3920 static int
3921 compare_mon_cmd(const void *a, const void *b)
3922 {
3923 return strcmp(((const mon_cmd_t *)a)->name,
3924 ((const mon_cmd_t *)b)->name);
3925 }
3926
3927 static void sortcmdlist(void)
3928 {
3929 int array_num;
3930 int elem_size = sizeof(mon_cmd_t);
3931
3932 array_num = sizeof(mon_cmds)/elem_size-1;
3933 qsort((void *)mon_cmds, array_num, elem_size, compare_mon_cmd);
3934
3935 array_num = sizeof(info_cmds)/elem_size-1;
3936 qsort((void *)info_cmds, array_num, elem_size, compare_mon_cmd);
3937 }
3938
3939 /* These functions just adapt the readline interface in a typesafe way. We
3940 * could cast function pointers but that discards compiler checks.
3941 */
3942 static void GCC_FMT_ATTR(2, 3) monitor_readline_printf(void *opaque,
3943 const char *fmt, ...)
3944 {
3945 va_list ap;
3946 va_start(ap, fmt);
3947 monitor_vprintf(opaque, fmt, ap);
3948 va_end(ap);
3949 }
3950
3951 static void monitor_readline_flush(void *opaque)
3952 {
3953 monitor_flush(opaque);
3954 }
3955
3956 static void __attribute__((constructor)) monitor_lock_init(void)
3957 {
3958 qemu_mutex_init(&monitor_lock);
3959 }
3960
3961 void monitor_init(CharDriverState *chr, int flags)
3962 {
3963 static int is_first_init = 1;
3964 Monitor *mon;
3965
3966 if (is_first_init) {
3967 monitor_qapi_event_init();
3968 sortcmdlist();
3969 is_first_init = 0;
3970 }
3971
3972 mon = g_malloc(sizeof(*mon));
3973 monitor_data_init(mon);
3974
3975 mon->chr = chr;
3976 mon->flags = flags;
3977 if (flags & MONITOR_USE_READLINE) {
3978 mon->rs = readline_init(monitor_readline_printf,
3979 monitor_readline_flush,
3980 mon,
3981 monitor_find_completion);
3982 monitor_read_command(mon, 0);
3983 }
3984
3985 if (monitor_is_qmp(mon)) {
3986 qemu_chr_add_handlers(chr, monitor_can_read, monitor_qmp_read,
3987 monitor_qmp_event, mon);
3988 qemu_chr_fe_set_echo(chr, true);
3989 json_message_parser_init(&mon->qmp.parser, handle_qmp_command);
3990 } else {
3991 qemu_chr_add_handlers(chr, monitor_can_read, monitor_read,
3992 monitor_event, mon);
3993 }
3994
3995 qemu_mutex_lock(&monitor_lock);
3996 QLIST_INSERT_HEAD(&mon_list, mon, entry);
3997 qemu_mutex_unlock(&monitor_lock);
3998 }
3999
4000 void monitor_cleanup(void)
4001 {
4002 Monitor *mon, *next;
4003
4004 qemu_mutex_lock(&monitor_lock);
4005 QLIST_FOREACH_SAFE(mon, &mon_list, entry, next) {
4006 QLIST_REMOVE(mon, entry);
4007 monitor_data_destroy(mon);
4008 g_free(mon);
4009 }
4010 qemu_mutex_unlock(&monitor_lock);
4011 }
4012
4013 static void bdrv_password_cb(void *opaque, const char *password,
4014 void *readline_opaque)
4015 {
4016 Monitor *mon = opaque;
4017 BlockDriverState *bs = readline_opaque;
4018 int ret = 0;
4019 Error *local_err = NULL;
4020
4021 bdrv_add_key(bs, password, &local_err);
4022 if (local_err) {
4023 error_report_err(local_err);
4024 ret = -EPERM;
4025 }
4026 if (mon->password_completion_cb)
4027 mon->password_completion_cb(mon->password_opaque, ret);
4028
4029 monitor_read_command(mon, 1);
4030 }
4031
4032 int monitor_read_bdrv_key_start(Monitor *mon, BlockDriverState *bs,
4033 BlockCompletionFunc *completion_cb,
4034 void *opaque)
4035 {
4036 int err;
4037
4038 monitor_printf(mon, "%s (%s) is encrypted.\n", bdrv_get_device_name(bs),
4039 bdrv_get_encrypted_filename(bs));
4040
4041 mon->password_completion_cb = completion_cb;
4042 mon->password_opaque = opaque;
4043
4044 err = monitor_read_password(mon, bdrv_password_cb, bs);
4045
4046 if (err && completion_cb)
4047 completion_cb(opaque, err);
4048
4049 return err;
4050 }
4051
4052 int monitor_read_block_device_key(Monitor *mon, const char *device,
4053 BlockCompletionFunc *completion_cb,
4054 void *opaque)
4055 {
4056 Error *err = NULL;
4057 BlockBackend *blk;
4058
4059 blk = blk_by_name(device);
4060 if (!blk) {
4061 monitor_printf(mon, "Device not found %s\n", device);
4062 return -1;
4063 }
4064 if (!blk_bs(blk)) {
4065 monitor_printf(mon, "Device '%s' has no medium\n", device);
4066 return -1;
4067 }
4068
4069 bdrv_add_key(blk_bs(blk), NULL, &err);
4070 if (err) {
4071 error_free(err);
4072 return monitor_read_bdrv_key_start(mon, blk_bs(blk), completion_cb, opaque);
4073 }
4074
4075 if (completion_cb) {
4076 completion_cb(opaque, 0);
4077 }
4078 return 0;
4079 }
4080
4081 QemuOptsList qemu_mon_opts = {
4082 .name = "mon",
4083 .implied_opt_name = "chardev",
4084 .head = QTAILQ_HEAD_INITIALIZER(qemu_mon_opts.head),
4085 .desc = {
4086 {
4087 .name = "mode",
4088 .type = QEMU_OPT_STRING,
4089 },{
4090 .name = "chardev",
4091 .type = QEMU_OPT_STRING,
4092 },{
4093 .name = "default",
4094 .type = QEMU_OPT_BOOL,
4095 },{
4096 .name = "pretty",
4097 .type = QEMU_OPT_BOOL,
4098 },
4099 { /* end of list */ }
4100 },
4101 };
4102
4103 #ifndef TARGET_I386
4104 void qmp_rtc_reset_reinjection(Error **errp)
4105 {
4106 error_setg(errp, QERR_FEATURE_DISABLED, "rtc-reset-reinjection");
4107 }
4108 #endif
4109
4110 #ifndef TARGET_S390X
4111 void qmp_dump_skeys(const char *filename, Error **errp)
4112 {
4113 error_setg(errp, QERR_FEATURE_DISABLED, "dump-skeys");
4114 }
4115 #endif
4116
4117 #ifndef TARGET_ARM
4118 GICCapabilityList *qmp_query_gic_capabilities(Error **errp)
4119 {
4120 error_setg(errp, QERR_FEATURE_DISABLED, "query-gic-capabilities");
4121 return NULL;
4122 }
4123 #endif
4124
4125 HotpluggableCPUList *qmp_query_hotpluggable_cpus(Error **errp)
4126 {
4127 MachineState *ms = MACHINE(qdev_get_machine());
4128 MachineClass *mc = MACHINE_GET_CLASS(ms);
4129
4130 if (!mc->query_hotpluggable_cpus) {
4131 error_setg(errp, QERR_FEATURE_DISABLED, "query-hotpluggable-cpus");
4132 return NULL;
4133 }
4134
4135 return mc->query_hotpluggable_cpus(ms);
4136 }
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