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sockets: move fd_is_socket() into common sockets code
[qemu/ar7.git] / monitor.c
bloba4417f26cde3a66b31b2fc99ef6f6a27d12ac5b8
1 /*
2 * QEMU monitor
3 *
4 * Copyright (c) 2003-2004 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24
25 #include "qemu/osdep.h"
26 #include <dirent.h>
27 #include "cpu.h"
28 #include "hw/hw.h"
29 #include "monitor/qdev.h"
30 #include "hw/usb.h"
31 #include "hw/pci/pci.h"
32 #include "sysemu/watchdog.h"
33 #include "hw/loader.h"
34 #include "exec/gdbstub.h"
35 #include "net/net.h"
36 #include "net/slirp.h"
37 #include "chardev/char-fe.h"
38 #include "ui/qemu-spice.h"
39 #include "sysemu/numa.h"
40 #include "monitor/monitor.h"
41 #include "qemu/config-file.h"
42 #include "qemu/readline.h"
43 #include "ui/console.h"
44 #include "ui/input.h"
45 #include "sysemu/blockdev.h"
46 #include "sysemu/block-backend.h"
47 #include "audio/audio.h"
48 #include "disas/disas.h"
49 #include "sysemu/balloon.h"
50 #include "qemu/timer.h"
51 #include "sysemu/hw_accel.h"
52 #include "qemu/acl.h"
53 #include "sysemu/tpm.h"
54 #include "qapi/qmp/qdict.h"
55 #include "qapi/qmp/qerror.h"
56 #include "qapi/qmp/qnum.h"
57 #include "qapi/qmp/qstring.h"
58 #include "qapi/qmp/qjson.h"
59 #include "qapi/qmp/json-streamer.h"
60 #include "qapi/qmp/json-parser.h"
61 #include "qom/object_interfaces.h"
62 #include "trace-root.h"
63 #include "trace/control.h"
64 #include "monitor/hmp-target.h"
65 #ifdef CONFIG_TRACE_SIMPLE
66 #include "trace/simple.h"
67 #endif
68 #include "exec/memory.h"
69 #include "exec/exec-all.h"
70 #include "qemu/log.h"
71 #include "qemu/option.h"
72 #include "hmp.h"
73 #include "qemu/thread.h"
74 #include "block/qapi.h"
75 #include "qapi/qapi-commands.h"
76 #include "qapi/qapi-events.h"
77 #include "qapi/error.h"
78 #include "qapi/qmp-event.h"
79 #include "qapi/qapi-introspect.h"
80 #include "sysemu/qtest.h"
81 #include "sysemu/cpus.h"
82 #include "qemu/cutils.h"
83
84 #if defined(TARGET_S390X)
85 #include "hw/s390x/storage-keys.h"
86 #include "hw/s390x/storage-attributes.h"
87 #endif
88
89 /*
90 * Supported types:
91 *
92 * 'F' filename
93 * 'B' block device name
94 * 's' string (accept optional quote)
95 * 'S' it just appends the rest of the string (accept optional quote)
96 * 'O' option string of the form NAME=VALUE,...
97 * parsed according to QemuOptsList given by its name
98 * Example: 'device:O' uses qemu_device_opts.
99 * Restriction: only lists with empty desc are supported
100 * TODO lift the restriction
101 * 'i' 32 bit integer
102 * 'l' target long (32 or 64 bit)
103 * 'M' Non-negative target long (32 or 64 bit), in user mode the
104 * value is multiplied by 2^20 (think Mebibyte)
105 * 'o' octets (aka bytes)
106 * user mode accepts an optional E, e, P, p, T, t, G, g, M, m,
107 * K, k suffix, which multiplies the value by 2^60 for suffixes E
108 * and e, 2^50 for suffixes P and p, 2^40 for suffixes T and t,
109 * 2^30 for suffixes G and g, 2^20 for M and m, 2^10 for K and k
110 * 'T' double
111 * user mode accepts an optional ms, us, ns suffix,
112 * which divides the value by 1e3, 1e6, 1e9, respectively
113 * '/' optional gdb-like print format (like "/10x")
114 *
115 * '?' optional type (for all types, except '/')
116 * '.' other form of optional type (for 'i' and 'l')
117 * 'b' boolean
118 * user mode accepts "on" or "off"
119 * '-' optional parameter (eg. '-f')
120 *
121 */
122
123 typedef struct mon_cmd_t {
124 const char *name;
125 const char *args_type;
126 const char *params;
127 const char *help;
128 void (*cmd)(Monitor *mon, const QDict *qdict);
129 /* @sub_table is a list of 2nd level of commands. If it does not exist,
130 * cmd should be used. If it exists, sub_table[?].cmd should be
131 * used, and cmd of 1st level plays the role of help function.
132 */
133 struct mon_cmd_t *sub_table;
134 void (*command_completion)(ReadLineState *rs, int nb_args, const char *str);
135 } mon_cmd_t;
136
137 /* file descriptors passed via SCM_RIGHTS */
138 typedef struct mon_fd_t mon_fd_t;
139 struct mon_fd_t {
140 char *name;
141 int fd;
142 QLIST_ENTRY(mon_fd_t) next;
143 };
144
145 /* file descriptor associated with a file descriptor set */
146 typedef struct MonFdsetFd MonFdsetFd;
147 struct MonFdsetFd {
148 int fd;
149 bool removed;
150 char *opaque;
151 QLIST_ENTRY(MonFdsetFd) next;
152 };
153
154 /* file descriptor set containing fds passed via SCM_RIGHTS */
155 typedef struct MonFdset MonFdset;
156 struct MonFdset {
157 int64_t id;
158 QLIST_HEAD(, MonFdsetFd) fds;
159 QLIST_HEAD(, MonFdsetFd) dup_fds;
160 QLIST_ENTRY(MonFdset) next;
161 };
162
163 typedef struct {
164 JSONMessageParser parser;
165 /*
166 * When a client connects, we're in capabilities negotiation mode.
167 * When command qmp_capabilities succeeds, we go into command
168 * mode.
169 */
170 QmpCommandList *commands;
171 } MonitorQMP;
172
173 /*
174 * To prevent flooding clients, events can be throttled. The
175 * throttling is calculated globally, rather than per-Monitor
176 * instance.
177 */
178 typedef struct MonitorQAPIEventState {
179 QAPIEvent event; /* Throttling state for this event type and... */
180 QDict *data; /* ... data, see qapi_event_throttle_equal() */
181 QEMUTimer *timer; /* Timer for handling delayed events */
182 QDict *qdict; /* Delayed event (if any) */
183 } MonitorQAPIEventState;
184
185 typedef struct {
186 int64_t rate; /* Minimum time (in ns) between two events */
187 } MonitorQAPIEventConf;
188
189 struct Monitor {
190 CharBackend chr;
191 int reset_seen;
192 int flags;
193 int suspend_cnt;
194 bool skip_flush;
195
196 QemuMutex out_lock;
197 QString *outbuf;
198 guint out_watch;
199
200 /* Read under either BQL or out_lock, written with BQL+out_lock. */
201 int mux_out;
202
203 ReadLineState *rs;
204 MonitorQMP qmp;
205 gchar *mon_cpu_path;
206 BlockCompletionFunc *password_completion_cb;
207 void *password_opaque;
208 mon_cmd_t *cmd_table;
209 QLIST_HEAD(,mon_fd_t) fds;
210 QLIST_ENTRY(Monitor) entry;
211 };
212
213 /* QMP checker flags */
214 #define QMP_ACCEPT_UNKNOWNS 1
215
216 /* Protects mon_list, monitor_event_state. */
217 static QemuMutex monitor_lock;
218
219 static QLIST_HEAD(mon_list, Monitor) mon_list;
220 static QLIST_HEAD(mon_fdsets, MonFdset) mon_fdsets;
221 static int mon_refcount;
222
223 static mon_cmd_t mon_cmds[];
224 static mon_cmd_t info_cmds[];
225
226 QmpCommandList qmp_commands, qmp_cap_negotiation_commands;
227
228 Monitor *cur_mon;
229
230 static QEMUClockType event_clock_type = QEMU_CLOCK_REALTIME;
231
232 static void monitor_command_cb(void *opaque, const char *cmdline,
233 void *readline_opaque);
234
235 /**
236 * Is @mon a QMP monitor?
237 */
238 static inline bool monitor_is_qmp(const Monitor *mon)
239 {
240 return (mon->flags & MONITOR_USE_CONTROL);
241 }
242
243 /**
244 * Is the current monitor, if any, a QMP monitor?
245 */
246 bool monitor_cur_is_qmp(void)
247 {
248 return cur_mon && monitor_is_qmp(cur_mon);
249 }
250
251 void monitor_read_command(Monitor *mon, int show_prompt)
252 {
253 if (!mon->rs)
254 return;
255
256 readline_start(mon->rs, "(qemu) ", 0, monitor_command_cb, NULL);
257 if (show_prompt)
258 readline_show_prompt(mon->rs);
259 }
260
261 int monitor_read_password(Monitor *mon, ReadLineFunc *readline_func,
262 void *opaque)
263 {
264 if (mon->rs) {
265 readline_start(mon->rs, "Password: ", 1, readline_func, opaque);
266 /* prompt is printed on return from the command handler */
267 return 0;
268 } else {
269 monitor_printf(mon, "terminal does not support password prompting\n");
270 return -ENOTTY;
271 }
272 }
273
274 static void monitor_flush_locked(Monitor *mon);
275
276 static gboolean monitor_unblocked(GIOChannel *chan, GIOCondition cond,
277 void *opaque)
278 {
279 Monitor *mon = opaque;
280
281 qemu_mutex_lock(&mon->out_lock);
282 mon->out_watch = 0;
283 monitor_flush_locked(mon);
284 qemu_mutex_unlock(&mon->out_lock);
285 return FALSE;
286 }
287
288 /* Called with mon->out_lock held. */
289 static void monitor_flush_locked(Monitor *mon)
290 {
291 int rc;
292 size_t len;
293 const char *buf;
294
295 if (mon->skip_flush) {
296 return;
297 }
298
299 buf = qstring_get_str(mon->outbuf);
300 len = qstring_get_length(mon->outbuf);
301
302 if (len && !mon->mux_out) {
303 rc = qemu_chr_fe_write(&mon->chr, (const uint8_t *) buf, len);
304 if ((rc < 0 && errno != EAGAIN) || (rc == len)) {
305 /* all flushed or error */
306 QDECREF(mon->outbuf);
307 mon->outbuf = qstring_new();
308 return;
309 }
310 if (rc > 0) {
311 /* partial write */
312 QString *tmp = qstring_from_str(buf + rc);
313 QDECREF(mon->outbuf);
314 mon->outbuf = tmp;
315 }
316 if (mon->out_watch == 0) {
317 mon->out_watch =
318 qemu_chr_fe_add_watch(&mon->chr, G_IO_OUT | G_IO_HUP,
319 monitor_unblocked, mon);
320 }
321 }
322 }
323
324 void monitor_flush(Monitor *mon)
325 {
326 qemu_mutex_lock(&mon->out_lock);
327 monitor_flush_locked(mon);
328 qemu_mutex_unlock(&mon->out_lock);
329 }
330
331 /* flush at every end of line */
332 static void monitor_puts(Monitor *mon, const char *str)
333 {
334 char c;
335
336 qemu_mutex_lock(&mon->out_lock);
337 for(;;) {
338 c = *str++;
339 if (c == '\0')
340 break;
341 if (c == '\n') {
342 qstring_append_chr(mon->outbuf, '\r');
343 }
344 qstring_append_chr(mon->outbuf, c);
345 if (c == '\n') {
346 monitor_flush_locked(mon);
347 }
348 }
349 qemu_mutex_unlock(&mon->out_lock);
350 }
351
352 void monitor_vprintf(Monitor *mon, const char *fmt, va_list ap)
353 {
354 char *buf;
355
356 if (!mon)
357 return;
358
359 if (monitor_is_qmp(mon)) {
360 return;
361 }
362
363 buf = g_strdup_vprintf(fmt, ap);
364 monitor_puts(mon, buf);
365 g_free(buf);
366 }
367
368 void monitor_printf(Monitor *mon, const char *fmt, ...)
369 {
370 va_list ap;
371 va_start(ap, fmt);
372 monitor_vprintf(mon, fmt, ap);
373 va_end(ap);
374 }
375
376 int monitor_fprintf(FILE *stream, const char *fmt, ...)
377 {
378 va_list ap;
379 va_start(ap, fmt);
380 monitor_vprintf((Monitor *)stream, fmt, ap);
381 va_end(ap);
382 return 0;
383 }
384
385 static void monitor_json_emitter(Monitor *mon, const QObject *data)
386 {
387 QString *json;
388
389 json = mon->flags & MONITOR_USE_PRETTY ? qobject_to_json_pretty(data) :
390 qobject_to_json(data);
391 assert(json != NULL);
392
393 qstring_append_chr(json, '\n');
394 monitor_puts(mon, qstring_get_str(json));
395
396 QDECREF(json);
397 }
398
399 static MonitorQAPIEventConf monitor_qapi_event_conf[QAPI_EVENT__MAX] = {
400 /* Limit guest-triggerable events to 1 per second */
401 [QAPI_EVENT_RTC_CHANGE] = { 1000 * SCALE_MS },
402 [QAPI_EVENT_WATCHDOG] = { 1000 * SCALE_MS },
403 [QAPI_EVENT_BALLOON_CHANGE] = { 1000 * SCALE_MS },
404 [QAPI_EVENT_QUORUM_REPORT_BAD] = { 1000 * SCALE_MS },
405 [QAPI_EVENT_QUORUM_FAILURE] = { 1000 * SCALE_MS },
406 [QAPI_EVENT_VSERPORT_CHANGE] = { 1000 * SCALE_MS },
407 };
408
409 GHashTable *monitor_qapi_event_state;
410
411 /*
412 * Emits the event to every monitor instance, @event is only used for trace
413 * Called with monitor_lock held.
414 */
415 static void monitor_qapi_event_emit(QAPIEvent event, QDict *qdict)
416 {
417 Monitor *mon;
418
419 trace_monitor_protocol_event_emit(event, qdict);
420 QLIST_FOREACH(mon, &mon_list, entry) {
421 if (monitor_is_qmp(mon)
422 && mon->qmp.commands != &qmp_cap_negotiation_commands) {
423 monitor_json_emitter(mon, QOBJECT(qdict));
424 }
425 }
426 }
427
428 static void monitor_qapi_event_handler(void *opaque);
429
430 /*
431 * Queue a new event for emission to Monitor instances,
432 * applying any rate limiting if required.
433 */
434 static void
435 monitor_qapi_event_queue(QAPIEvent event, QDict *qdict, Error **errp)
436 {
437 MonitorQAPIEventConf *evconf;
438 MonitorQAPIEventState *evstate;
439
440 assert(event < QAPI_EVENT__MAX);
441 evconf = &monitor_qapi_event_conf[event];
442 trace_monitor_protocol_event_queue(event, qdict, evconf->rate);
443
444 qemu_mutex_lock(&monitor_lock);
445
446 if (!evconf->rate) {
447 /* Unthrottled event */
448 monitor_qapi_event_emit(event, qdict);
449 } else {
450 QDict *data = qobject_to_qdict(qdict_get(qdict, "data"));
451 MonitorQAPIEventState key = { .event = event, .data = data };
452
453 evstate = g_hash_table_lookup(monitor_qapi_event_state, &key);
454 assert(!evstate || timer_pending(evstate->timer));
455
456 if (evstate) {
457 /*
458 * Timer is pending for (at least) evconf->rate ns after
459 * last send. Store event for sending when timer fires,
460 * replacing a prior stored event if any.
461 */
462 QDECREF(evstate->qdict);
463 evstate->qdict = qdict;
464 QINCREF(evstate->qdict);
465 } else {
466 /*
467 * Last send was (at least) evconf->rate ns ago.
468 * Send immediately, and arm the timer to call
469 * monitor_qapi_event_handler() in evconf->rate ns. Any
470 * events arriving before then will be delayed until then.
471 */
472 int64_t now = qemu_clock_get_ns(event_clock_type);
473
474 monitor_qapi_event_emit(event, qdict);
475
476 evstate = g_new(MonitorQAPIEventState, 1);
477 evstate->event = event;
478 evstate->data = data;
479 QINCREF(evstate->data);
480 evstate->qdict = NULL;
481 evstate->timer = timer_new_ns(event_clock_type,
482 monitor_qapi_event_handler,
483 evstate);
484 g_hash_table_add(monitor_qapi_event_state, evstate);
485 timer_mod_ns(evstate->timer, now + evconf->rate);
486 }
487 }
488
489 qemu_mutex_unlock(&monitor_lock);
490 }
491
492 /*
493 * This function runs evconf->rate ns after sending a throttled
494 * event.
495 * If another event has since been stored, send it.
496 */
497 static void monitor_qapi_event_handler(void *opaque)
498 {
499 MonitorQAPIEventState *evstate = opaque;
500 MonitorQAPIEventConf *evconf = &monitor_qapi_event_conf[evstate->event];
501
502 trace_monitor_protocol_event_handler(evstate->event, evstate->qdict);
503 qemu_mutex_lock(&monitor_lock);
504
505 if (evstate->qdict) {
506 int64_t now = qemu_clock_get_ns(event_clock_type);
507
508 monitor_qapi_event_emit(evstate->event, evstate->qdict);
509 QDECREF(evstate->qdict);
510 evstate->qdict = NULL;
511 timer_mod_ns(evstate->timer, now + evconf->rate);
512 } else {
513 g_hash_table_remove(monitor_qapi_event_state, evstate);
514 QDECREF(evstate->data);
515 timer_free(evstate->timer);
516 g_free(evstate);
517 }
518
519 qemu_mutex_unlock(&monitor_lock);
520 }
521
522 static unsigned int qapi_event_throttle_hash(const void *key)
523 {
524 const MonitorQAPIEventState *evstate = key;
525 unsigned int hash = evstate->event * 255;
526
527 if (evstate->event == QAPI_EVENT_VSERPORT_CHANGE) {
528 hash += g_str_hash(qdict_get_str(evstate->data, "id"));
529 }
530
531 if (evstate->event == QAPI_EVENT_QUORUM_REPORT_BAD) {
532 hash += g_str_hash(qdict_get_str(evstate->data, "node-name"));
533 }
534
535 return hash;
536 }
537
538 static gboolean qapi_event_throttle_equal(const void *a, const void *b)
539 {
540 const MonitorQAPIEventState *eva = a;
541 const MonitorQAPIEventState *evb = b;
542
543 if (eva->event != evb->event) {
544 return FALSE;
545 }
546
547 if (eva->event == QAPI_EVENT_VSERPORT_CHANGE) {
548 return !strcmp(qdict_get_str(eva->data, "id"),
549 qdict_get_str(evb->data, "id"));
550 }
551
552 if (eva->event == QAPI_EVENT_QUORUM_REPORT_BAD) {
553 return !strcmp(qdict_get_str(eva->data, "node-name"),
554 qdict_get_str(evb->data, "node-name"));
555 }
556
557 return TRUE;
558 }
559
560 static void monitor_qapi_event_init(void)
561 {
562 if (qtest_enabled()) {
563 event_clock_type = QEMU_CLOCK_VIRTUAL;
564 }
565
566 monitor_qapi_event_state = g_hash_table_new(qapi_event_throttle_hash,
567 qapi_event_throttle_equal);
568 qmp_event_set_func_emit(monitor_qapi_event_queue);
569 }
570
571 static void handle_hmp_command(Monitor *mon, const char *cmdline);
572
573 static void monitor_data_init(Monitor *mon)
574 {
575 memset(mon, 0, sizeof(Monitor));
576 qemu_mutex_init(&mon->out_lock);
577 mon->outbuf = qstring_new();
578 /* Use *mon_cmds by default. */
579 mon->cmd_table = mon_cmds;
580 }
581
582 static void monitor_data_destroy(Monitor *mon)
583 {
584 g_free(mon->mon_cpu_path);
585 qemu_chr_fe_deinit(&mon->chr, false);
586 if (monitor_is_qmp(mon)) {
587 json_message_parser_destroy(&mon->qmp.parser);
588 }
589 readline_free(mon->rs);
590 QDECREF(mon->outbuf);
591 qemu_mutex_destroy(&mon->out_lock);
592 }
593
594 char *qmp_human_monitor_command(const char *command_line, bool has_cpu_index,
595 int64_t cpu_index, Error **errp)
596 {
597 char *output = NULL;
598 Monitor *old_mon, hmp;
599
600 monitor_data_init(&hmp);
601 hmp.skip_flush = true;
602
603 old_mon = cur_mon;
604 cur_mon = &hmp;
605
606 if (has_cpu_index) {
607 int ret = monitor_set_cpu(cpu_index);
608 if (ret < 0) {
609 cur_mon = old_mon;
610 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "cpu-index",
611 "a CPU number");
612 goto out;
613 }
614 }
615
616 handle_hmp_command(&hmp, command_line);
617 cur_mon = old_mon;
618
619 qemu_mutex_lock(&hmp.out_lock);
620 if (qstring_get_length(hmp.outbuf) > 0) {
621 output = g_strdup(qstring_get_str(hmp.outbuf));
622 } else {
623 output = g_strdup("");
624 }
625 qemu_mutex_unlock(&hmp.out_lock);
626
627 out:
628 monitor_data_destroy(&hmp);
629 return output;
630 }
631
632 static int compare_cmd(const char *name, const char *list)
633 {
634 const char *p, *pstart;
635 int len;
636 len = strlen(name);
637 p = list;
638 for(;;) {
639 pstart = p;
640 p = strchr(p, '|');
641 if (!p)
642 p = pstart + strlen(pstart);
643 if ((p - pstart) == len && !memcmp(pstart, name, len))
644 return 1;
645 if (*p == '\0')
646 break;
647 p++;
648 }
649 return 0;
650 }
651
652 static int get_str(char *buf, int buf_size, const char **pp)
653 {
654 const char *p;
655 char *q;
656 int c;
657
658 q = buf;
659 p = *pp;
660 while (qemu_isspace(*p)) {
661 p++;
662 }
663 if (*p == '\0') {
664 fail:
665 *q = '\0';
666 *pp = p;
667 return -1;
668 }
669 if (*p == '\"') {
670 p++;
671 while (*p != '\0' && *p != '\"') {
672 if (*p == '\\') {
673 p++;
674 c = *p++;
675 switch (c) {
676 case 'n':
677 c = '\n';
678 break;
679 case 'r':
680 c = '\r';
681 break;
682 case '\\':
683 case '\'':
684 case '\"':
685 break;
686 default:
687 printf("unsupported escape code: '\\%c'\n", c);
688 goto fail;
689 }
690 if ((q - buf) < buf_size - 1) {
691 *q++ = c;
692 }
693 } else {
694 if ((q - buf) < buf_size - 1) {
695 *q++ = *p;
696 }
697 p++;
698 }
699 }
700 if (*p != '\"') {
701 printf("unterminated string\n");
702 goto fail;
703 }
704 p++;
705 } else {
706 while (*p != '\0' && !qemu_isspace(*p)) {
707 if ((q - buf) < buf_size - 1) {
708 *q++ = *p;
709 }
710 p++;
711 }
712 }
713 *q = '\0';
714 *pp = p;
715 return 0;
716 }
717
718 #define MAX_ARGS 16
719
720 static void free_cmdline_args(char **args, int nb_args)
721 {
722 int i;
723
724 assert(nb_args <= MAX_ARGS);
725
726 for (i = 0; i < nb_args; i++) {
727 g_free(args[i]);
728 }
729
730 }
731
732 /*
733 * Parse the command line to get valid args.
734 * @cmdline: command line to be parsed.
735 * @pnb_args: location to store the number of args, must NOT be NULL.
736 * @args: location to store the args, which should be freed by caller, must
737 * NOT be NULL.
738 *
739 * Returns 0 on success, negative on failure.
740 *
741 * NOTE: this parser is an approximate form of the real command parser. Number
742 * of args have a limit of MAX_ARGS. If cmdline contains more, it will
743 * return with failure.
744 */
745 static int parse_cmdline(const char *cmdline,
746 int *pnb_args, char **args)
747 {
748 const char *p;
749 int nb_args, ret;
750 char buf[1024];
751
752 p = cmdline;
753 nb_args = 0;
754 for (;;) {
755 while (qemu_isspace(*p)) {
756 p++;
757 }
758 if (*p == '\0') {
759 break;
760 }
761 if (nb_args >= MAX_ARGS) {
762 goto fail;
763 }
764 ret = get_str(buf, sizeof(buf), &p);
765 if (ret < 0) {
766 goto fail;
767 }
768 args[nb_args] = g_strdup(buf);
769 nb_args++;
770 }
771 *pnb_args = nb_args;
772 return 0;
773
774 fail:
775 free_cmdline_args(args, nb_args);
776 return -1;
777 }
778
779 static void help_cmd_dump_one(Monitor *mon,
780 const mon_cmd_t *cmd,
781 char **prefix_args,
782 int prefix_args_nb)
783 {
784 int i;
785
786 for (i = 0; i < prefix_args_nb; i++) {
787 monitor_printf(mon, "%s ", prefix_args[i]);
788 }
789 monitor_printf(mon, "%s %s -- %s\n", cmd->name, cmd->params, cmd->help);
790 }
791
792 /* @args[@arg_index] is the valid command need to find in @cmds */
793 static void help_cmd_dump(Monitor *mon, const mon_cmd_t *cmds,
794 char **args, int nb_args, int arg_index)
795 {
796 const mon_cmd_t *cmd;
797
798 /* No valid arg need to compare with, dump all in *cmds */
799 if (arg_index >= nb_args) {
800 for (cmd = cmds; cmd->name != NULL; cmd++) {
801 help_cmd_dump_one(mon, cmd, args, arg_index);
802 }
803 return;
804 }
805
806 /* Find one entry to dump */
807 for (cmd = cmds; cmd->name != NULL; cmd++) {
808 if (compare_cmd(args[arg_index], cmd->name)) {
809 if (cmd->sub_table) {
810 /* continue with next arg */
811 help_cmd_dump(mon, cmd->sub_table,
812 args, nb_args, arg_index + 1);
813 } else {
814 help_cmd_dump_one(mon, cmd, args, arg_index);
815 }
816 break;
817 }
818 }
819 }
820
821 static void help_cmd(Monitor *mon, const char *name)
822 {
823 char *args[MAX_ARGS];
824 int nb_args = 0;
825
826 /* 1. parse user input */
827 if (name) {
828 /* special case for log, directly dump and return */
829 if (!strcmp(name, "log")) {
830 const QEMULogItem *item;
831 monitor_printf(mon, "Log items (comma separated):\n");
832 monitor_printf(mon, "%-10s %s\n", "none", "remove all logs");
833 for (item = qemu_log_items; item->mask != 0; item++) {
834 monitor_printf(mon, "%-10s %s\n", item->name, item->help);
835 }
836 return;
837 }
838
839 if (parse_cmdline(name, &nb_args, args) < 0) {
840 return;
841 }
842 }
843
844 /* 2. dump the contents according to parsed args */
845 help_cmd_dump(mon, mon->cmd_table, args, nb_args, 0);
846
847 free_cmdline_args(args, nb_args);
848 }
849
850 static void do_help_cmd(Monitor *mon, const QDict *qdict)
851 {
852 help_cmd(mon, qdict_get_try_str(qdict, "name"));
853 }
854
855 static void hmp_trace_event(Monitor *mon, const QDict *qdict)
856 {
857 const char *tp_name = qdict_get_str(qdict, "name");
858 bool new_state = qdict_get_bool(qdict, "option");
859 bool has_vcpu = qdict_haskey(qdict, "vcpu");
860 int vcpu = qdict_get_try_int(qdict, "vcpu", 0);
861 Error *local_err = NULL;
862
863 if (vcpu < 0) {
864 monitor_printf(mon, "argument vcpu must be positive");
865 return;
866 }
867
868 qmp_trace_event_set_state(tp_name, new_state, true, true, has_vcpu, vcpu, &local_err);
869 if (local_err) {
870 error_report_err(local_err);
871 }
872 }
873
874 #ifdef CONFIG_TRACE_SIMPLE
875 static void hmp_trace_file(Monitor *mon, const QDict *qdict)
876 {
877 const char *op = qdict_get_try_str(qdict, "op");
878 const char *arg = qdict_get_try_str(qdict, "arg");
879
880 if (!op) {
881 st_print_trace_file_status((FILE *)mon, &monitor_fprintf);
882 } else if (!strcmp(op, "on")) {
883 st_set_trace_file_enabled(true);
884 } else if (!strcmp(op, "off")) {
885 st_set_trace_file_enabled(false);
886 } else if (!strcmp(op, "flush")) {
887 st_flush_trace_buffer();
888 } else if (!strcmp(op, "set")) {
889 if (arg) {
890 st_set_trace_file(arg);
891 }
892 } else {
893 monitor_printf(mon, "unexpected argument \"%s\"\n", op);
894 help_cmd(mon, "trace-file");
895 }
896 }
897 #endif
898
899 static void hmp_info_help(Monitor *mon, const QDict *qdict)
900 {
901 help_cmd(mon, "info");
902 }
903
904 static void query_commands_cb(QmpCommand *cmd, void *opaque)
905 {
906 CommandInfoList *info, **list = opaque;
907
908 if (!cmd->enabled) {
909 return;
910 }
911
912 info = g_malloc0(sizeof(*info));
913 info->value = g_malloc0(sizeof(*info->value));
914 info->value->name = g_strdup(cmd->name);
915 info->next = *list;
916 *list = info;
917 }
918
919 CommandInfoList *qmp_query_commands(Error **errp)
920 {
921 CommandInfoList *list = NULL;
922
923 qmp_for_each_command(cur_mon->qmp.commands, query_commands_cb, &list);
924
925 return list;
926 }
927
928 EventInfoList *qmp_query_events(Error **errp)
929 {
930 EventInfoList *info, *ev_list = NULL;
931 QAPIEvent e;
932
933 for (e = 0 ; e < QAPI_EVENT__MAX ; e++) {
934 const char *event_name = QAPIEvent_str(e);
935 assert(event_name != NULL);
936 info = g_malloc0(sizeof(*info));
937 info->value = g_malloc0(sizeof(*info->value));
938 info->value->name = g_strdup(event_name);
939
940 info->next = ev_list;
941 ev_list = info;
942 }
943
944 return ev_list;
945 }
946
947 /*
948 * Minor hack: generated marshalling suppressed for this command
949 * ('gen': false in the schema) so we can parse the JSON string
950 * directly into QObject instead of first parsing it with
951 * visit_type_SchemaInfoList() into a SchemaInfoList, then marshal it
952 * to QObject with generated output marshallers, every time. Instead,
953 * we do it in test-qobject-input-visitor.c, just to make sure
954 * qapi-gen.py's output actually conforms to the schema.
955 */
956 static void qmp_query_qmp_schema(QDict *qdict, QObject **ret_data,
957 Error **errp)
958 {
959 *ret_data = qobject_from_json(qmp_schema_json, &error_abort);
960 }
961
962 /*
963 * We used to define commands in qmp-commands.hx in addition to the
964 * QAPI schema. This permitted defining some of them only in certain
965 * configurations. query-commands has always reflected that (good,
966 * because it lets QMP clients figure out what's actually available),
967 * while query-qmp-schema never did (not so good). This function is a
968 * hack to keep the configuration-specific commands defined exactly as
969 * before, even though qmp-commands.hx is gone.
970 *
971 * FIXME Educate the QAPI schema on configuration-specific commands,
972 * and drop this hack.
973 */
974 static void qmp_unregister_commands_hack(void)
975 {
976 #ifndef CONFIG_SPICE
977 qmp_unregister_command(&qmp_commands, "query-spice");
978 #endif
979 #ifndef CONFIG_REPLICATION
980 qmp_unregister_command(&qmp_commands, "xen-set-replication");
981 qmp_unregister_command(&qmp_commands, "query-xen-replication-status");
982 qmp_unregister_command(&qmp_commands, "xen-colo-do-checkpoint");
983 #endif
984 #ifndef TARGET_I386
985 qmp_unregister_command(&qmp_commands, "rtc-reset-reinjection");
986 #endif
987 #ifndef TARGET_S390X
988 qmp_unregister_command(&qmp_commands, "dump-skeys");
989 #endif
990 #ifndef TARGET_ARM
991 qmp_unregister_command(&qmp_commands, "query-gic-capabilities");
992 #endif
993 #if !defined(TARGET_S390X) && !defined(TARGET_I386)
994 qmp_unregister_command(&qmp_commands, "query-cpu-model-expansion");
995 #endif
996 #if !defined(TARGET_S390X)
997 qmp_unregister_command(&qmp_commands, "query-cpu-model-baseline");
998 qmp_unregister_command(&qmp_commands, "query-cpu-model-comparison");
999 #endif
1000 #if !defined(TARGET_PPC) && !defined(TARGET_ARM) && !defined(TARGET_I386) \
1001 && !defined(TARGET_S390X)
1002 qmp_unregister_command(&qmp_commands, "query-cpu-definitions");
1003 #endif
1004 }
1005
1006 void monitor_init_qmp_commands(void)
1007 {
1008 /*
1009 * Two command lists:
1010 * - qmp_commands contains all QMP commands
1011 * - qmp_cap_negotiation_commands contains just
1012 * "qmp_capabilities", to enforce capability negotiation
1013 */
1014
1015 qmp_init_marshal(&qmp_commands);
1016
1017 qmp_register_command(&qmp_commands, "query-qmp-schema",
1018 qmp_query_qmp_schema,
1019 QCO_NO_OPTIONS);
1020 qmp_register_command(&qmp_commands, "device_add", qmp_device_add,
1021 QCO_NO_OPTIONS);
1022 qmp_register_command(&qmp_commands, "netdev_add", qmp_netdev_add,
1023 QCO_NO_OPTIONS);
1024
1025 qmp_unregister_commands_hack();
1026
1027 QTAILQ_INIT(&qmp_cap_negotiation_commands);
1028 qmp_register_command(&qmp_cap_negotiation_commands, "qmp_capabilities",
1029 qmp_marshal_qmp_capabilities, QCO_NO_OPTIONS);
1030 }
1031
1032 void qmp_qmp_capabilities(Error **errp)
1033 {
1034 if (cur_mon->qmp.commands == &qmp_commands) {
1035 error_set(errp, ERROR_CLASS_COMMAND_NOT_FOUND,
1036 "Capabilities negotiation is already complete, command "
1037 "ignored");
1038 return;
1039 }
1040
1041 cur_mon->qmp.commands = &qmp_commands;
1042 }
1043
1044 /* set the current CPU defined by the user */
1045 int monitor_set_cpu(int cpu_index)
1046 {
1047 CPUState *cpu;
1048
1049 cpu = qemu_get_cpu(cpu_index);
1050 if (cpu == NULL) {
1051 return -1;
1052 }
1053 g_free(cur_mon->mon_cpu_path);
1054 cur_mon->mon_cpu_path = object_get_canonical_path(OBJECT(cpu));
1055 return 0;
1056 }
1057
1058 static CPUState *mon_get_cpu_sync(bool synchronize)
1059 {
1060 CPUState *cpu;
1061
1062 if (cur_mon->mon_cpu_path) {
1063 cpu = (CPUState *) object_resolve_path_type(cur_mon->mon_cpu_path,
1064 TYPE_CPU, NULL);
1065 if (!cpu) {
1066 g_free(cur_mon->mon_cpu_path);
1067 cur_mon->mon_cpu_path = NULL;
1068 }
1069 }
1070 if (!cur_mon->mon_cpu_path) {
1071 if (!first_cpu) {
1072 return NULL;
1073 }
1074 monitor_set_cpu(first_cpu->cpu_index);
1075 cpu = first_cpu;
1076 }
1077 if (synchronize) {
1078 cpu_synchronize_state(cpu);
1079 }
1080 return cpu;
1081 }
1082
1083 CPUState *mon_get_cpu(void)
1084 {
1085 return mon_get_cpu_sync(true);
1086 }
1087
1088 CPUArchState *mon_get_cpu_env(void)
1089 {
1090 CPUState *cs = mon_get_cpu();
1091
1092 return cs ? cs->env_ptr : NULL;
1093 }
1094
1095 int monitor_get_cpu_index(void)
1096 {
1097 CPUState *cs = mon_get_cpu_sync(false);
1098
1099 return cs ? cs->cpu_index : UNASSIGNED_CPU_INDEX;
1100 }
1101
1102 static void hmp_info_registers(Monitor *mon, const QDict *qdict)
1103 {
1104 bool all_cpus = qdict_get_try_bool(qdict, "cpustate_all", false);
1105 CPUState *cs;
1106
1107 if (all_cpus) {
1108 CPU_FOREACH(cs) {
1109 monitor_printf(mon, "\nCPU#%d\n", cs->cpu_index);
1110 cpu_dump_state(cs, (FILE *)mon, monitor_fprintf, CPU_DUMP_FPU);
1111 }
1112 } else {
1113 cs = mon_get_cpu();
1114
1115 if (!cs) {
1116 monitor_printf(mon, "No CPU available\n");
1117 return;
1118 }
1119
1120 cpu_dump_state(cs, (FILE *)mon, monitor_fprintf, CPU_DUMP_FPU);
1121 }
1122 }
1123
1124 #ifdef CONFIG_TCG
1125 static void hmp_info_jit(Monitor *mon, const QDict *qdict)
1126 {
1127 if (!tcg_enabled()) {
1128 error_report("JIT information is only available with accel=tcg");
1129 return;
1130 }
1131
1132 dump_exec_info((FILE *)mon, monitor_fprintf);
1133 dump_drift_info((FILE *)mon, monitor_fprintf);
1134 }
1135
1136 static void hmp_info_opcount(Monitor *mon, const QDict *qdict)
1137 {
1138 dump_opcount_info((FILE *)mon, monitor_fprintf);
1139 }
1140 #endif
1141
1142 static void hmp_info_history(Monitor *mon, const QDict *qdict)
1143 {
1144 int i;
1145 const char *str;
1146
1147 if (!mon->rs)
1148 return;
1149 i = 0;
1150 for(;;) {
1151 str = readline_get_history(mon->rs, i);
1152 if (!str)
1153 break;
1154 monitor_printf(mon, "%d: '%s'\n", i, str);
1155 i++;
1156 }
1157 }
1158
1159 static void hmp_info_cpustats(Monitor *mon, const QDict *qdict)
1160 {
1161 CPUState *cs = mon_get_cpu();
1162
1163 if (!cs) {
1164 monitor_printf(mon, "No CPU available\n");
1165 return;
1166 }
1167 cpu_dump_statistics(cs, (FILE *)mon, &monitor_fprintf, 0);
1168 }
1169
1170 static void hmp_info_trace_events(Monitor *mon, const QDict *qdict)
1171 {
1172 const char *name = qdict_get_try_str(qdict, "name");
1173 bool has_vcpu = qdict_haskey(qdict, "vcpu");
1174 int vcpu = qdict_get_try_int(qdict, "vcpu", 0);
1175 TraceEventInfoList *events;
1176 TraceEventInfoList *elem;
1177 Error *local_err = NULL;
1178
1179 if (name == NULL) {
1180 name = "*";
1181 }
1182 if (vcpu < 0) {
1183 monitor_printf(mon, "argument vcpu must be positive");
1184 return;
1185 }
1186
1187 events = qmp_trace_event_get_state(name, has_vcpu, vcpu, &local_err);
1188 if (local_err) {
1189 error_report_err(local_err);
1190 return;
1191 }
1192
1193 for (elem = events; elem != NULL; elem = elem->next) {
1194 monitor_printf(mon, "%s : state %u\n",
1195 elem->value->name,
1196 elem->value->state == TRACE_EVENT_STATE_ENABLED ? 1 : 0);
1197 }
1198 qapi_free_TraceEventInfoList(events);
1199 }
1200
1201 void qmp_client_migrate_info(const char *protocol, const char *hostname,
1202 bool has_port, int64_t port,
1203 bool has_tls_port, int64_t tls_port,
1204 bool has_cert_subject, const char *cert_subject,
1205 Error **errp)
1206 {
1207 if (strcmp(protocol, "spice") == 0) {
1208 if (!qemu_using_spice(errp)) {
1209 return;
1210 }
1211
1212 if (!has_port && !has_tls_port) {
1213 error_setg(errp, QERR_MISSING_PARAMETER, "port/tls-port");
1214 return;
1215 }
1216
1217 if (qemu_spice_migrate_info(hostname,
1218 has_port ? port : -1,
1219 has_tls_port ? tls_port : -1,
1220 cert_subject)) {
1221 error_setg(errp, QERR_UNDEFINED_ERROR);
1222 return;
1223 }
1224 return;
1225 }
1226
1227 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "protocol", "spice");
1228 }
1229
1230 static void hmp_logfile(Monitor *mon, const QDict *qdict)
1231 {
1232 Error *err = NULL;
1233
1234 qemu_set_log_filename(qdict_get_str(qdict, "filename"), &err);
1235 if (err) {
1236 error_report_err(err);
1237 }
1238 }
1239
1240 static void hmp_log(Monitor *mon, const QDict *qdict)
1241 {
1242 int mask;
1243 const char *items = qdict_get_str(qdict, "items");
1244
1245 if (!strcmp(items, "none")) {
1246 mask = 0;
1247 } else {
1248 mask = qemu_str_to_log_mask(items);
1249 if (!mask) {
1250 help_cmd(mon, "log");
1251 return;
1252 }
1253 }
1254 qemu_set_log(mask);
1255 }
1256
1257 static void hmp_singlestep(Monitor *mon, const QDict *qdict)
1258 {
1259 const char *option = qdict_get_try_str(qdict, "option");
1260 if (!option || !strcmp(option, "on")) {
1261 singlestep = 1;
1262 } else if (!strcmp(option, "off")) {
1263 singlestep = 0;
1264 } else {
1265 monitor_printf(mon, "unexpected option %s\n", option);
1266 }
1267 }
1268
1269 static void hmp_gdbserver(Monitor *mon, const QDict *qdict)
1270 {
1271 const char *device = qdict_get_try_str(qdict, "device");
1272 if (!device)
1273 device = "tcp::" DEFAULT_GDBSTUB_PORT;
1274 if (gdbserver_start(device) < 0) {
1275 monitor_printf(mon, "Could not open gdbserver on device '%s'\n",
1276 device);
1277 } else if (strcmp(device, "none") == 0) {
1278 monitor_printf(mon, "Disabled gdbserver\n");
1279 } else {
1280 monitor_printf(mon, "Waiting for gdb connection on device '%s'\n",
1281 device);
1282 }
1283 }
1284
1285 static void hmp_watchdog_action(Monitor *mon, const QDict *qdict)
1286 {
1287 const char *action = qdict_get_str(qdict, "action");
1288 if (select_watchdog_action(action) == -1) {
1289 monitor_printf(mon, "Unknown watchdog action '%s'\n", action);
1290 }
1291 }
1292
1293 static void monitor_printc(Monitor *mon, int c)
1294 {
1295 monitor_printf(mon, "'");
1296 switch(c) {
1297 case '\'':
1298 monitor_printf(mon, "\\'");
1299 break;
1300 case '\\':
1301 monitor_printf(mon, "\\\\");
1302 break;
1303 case '\n':
1304 monitor_printf(mon, "\\n");
1305 break;
1306 case '\r':
1307 monitor_printf(mon, "\\r");
1308 break;
1309 default:
1310 if (c >= 32 && c <= 126) {
1311 monitor_printf(mon, "%c", c);
1312 } else {
1313 monitor_printf(mon, "\\x%02x", c);
1314 }
1315 break;
1316 }
1317 monitor_printf(mon, "'");
1318 }
1319
1320 static void memory_dump(Monitor *mon, int count, int format, int wsize,
1321 hwaddr addr, int is_physical)
1322 {
1323 int l, line_size, i, max_digits, len;
1324 uint8_t buf[16];
1325 uint64_t v;
1326 CPUState *cs = mon_get_cpu();
1327
1328 if (!cs && (format == 'i' || !is_physical)) {
1329 monitor_printf(mon, "Can not dump without CPU\n");
1330 return;
1331 }
1332
1333 if (format == 'i') {
1334 monitor_disas(mon, cs, addr, count, is_physical);
1335 return;
1336 }
1337
1338 len = wsize * count;
1339 if (wsize == 1)
1340 line_size = 8;
1341 else
1342 line_size = 16;
1343 max_digits = 0;
1344
1345 switch(format) {
1346 case 'o':
1347 max_digits = DIV_ROUND_UP(wsize * 8, 3);
1348 break;
1349 default:
1350 case 'x':
1351 max_digits = (wsize * 8) / 4;
1352 break;
1353 case 'u':
1354 case 'd':
1355 max_digits = DIV_ROUND_UP(wsize * 8 * 10, 33);
1356 break;
1357 case 'c':
1358 wsize = 1;
1359 break;
1360 }
1361
1362 while (len > 0) {
1363 if (is_physical)
1364 monitor_printf(mon, TARGET_FMT_plx ":", addr);
1365 else
1366 monitor_printf(mon, TARGET_FMT_lx ":", (target_ulong)addr);
1367 l = len;
1368 if (l > line_size)
1369 l = line_size;
1370 if (is_physical) {
1371 cpu_physical_memory_read(addr, buf, l);
1372 } else {
1373 if (cpu_memory_rw_debug(cs, addr, buf, l, 0) < 0) {
1374 monitor_printf(mon, " Cannot access memory\n");
1375 break;
1376 }
1377 }
1378 i = 0;
1379 while (i < l) {
1380 switch(wsize) {
1381 default:
1382 case 1:
1383 v = ldub_p(buf + i);
1384 break;
1385 case 2:
1386 v = lduw_p(buf + i);
1387 break;
1388 case 4:
1389 v = (uint32_t)ldl_p(buf + i);
1390 break;
1391 case 8:
1392 v = ldq_p(buf + i);
1393 break;
1394 }
1395 monitor_printf(mon, " ");
1396 switch(format) {
1397 case 'o':
1398 monitor_printf(mon, "%#*" PRIo64, max_digits, v);
1399 break;
1400 case 'x':
1401 monitor_printf(mon, "0x%0*" PRIx64, max_digits, v);
1402 break;
1403 case 'u':
1404 monitor_printf(mon, "%*" PRIu64, max_digits, v);
1405 break;
1406 case 'd':
1407 monitor_printf(mon, "%*" PRId64, max_digits, v);
1408 break;
1409 case 'c':
1410 monitor_printc(mon, v);
1411 break;
1412 }
1413 i += wsize;
1414 }
1415 monitor_printf(mon, "\n");
1416 addr += l;
1417 len -= l;
1418 }
1419 }
1420
1421 static void hmp_memory_dump(Monitor *mon, const QDict *qdict)
1422 {
1423 int count = qdict_get_int(qdict, "count");
1424 int format = qdict_get_int(qdict, "format");
1425 int size = qdict_get_int(qdict, "size");
1426 target_long addr = qdict_get_int(qdict, "addr");
1427
1428 memory_dump(mon, count, format, size, addr, 0);
1429 }
1430
1431 static void hmp_physical_memory_dump(Monitor *mon, const QDict *qdict)
1432 {
1433 int count = qdict_get_int(qdict, "count");
1434 int format = qdict_get_int(qdict, "format");
1435 int size = qdict_get_int(qdict, "size");
1436 hwaddr addr = qdict_get_int(qdict, "addr");
1437
1438 memory_dump(mon, count, format, size, addr, 1);
1439 }
1440
1441 static void *gpa2hva(MemoryRegion **p_mr, hwaddr addr, Error **errp)
1442 {
1443 MemoryRegionSection mrs = memory_region_find(get_system_memory(),
1444 addr, 1);
1445
1446 if (!mrs.mr) {
1447 error_setg(errp, "No memory is mapped at address 0x%" HWADDR_PRIx, addr);
1448 return NULL;
1449 }
1450
1451 if (!memory_region_is_ram(mrs.mr) && !memory_region_is_romd(mrs.mr)) {
1452 error_setg(errp, "Memory at address 0x%" HWADDR_PRIx "is not RAM", addr);
1453 memory_region_unref(mrs.mr);
1454 return NULL;
1455 }
1456
1457 *p_mr = mrs.mr;
1458 return qemu_map_ram_ptr(mrs.mr->ram_block, mrs.offset_within_region);
1459 }
1460
1461 static void hmp_gpa2hva(Monitor *mon, const QDict *qdict)
1462 {
1463 hwaddr addr = qdict_get_int(qdict, "addr");
1464 Error *local_err = NULL;
1465 MemoryRegion *mr = NULL;
1466 void *ptr;
1467
1468 ptr = gpa2hva(&mr, addr, &local_err);
1469 if (local_err) {
1470 error_report_err(local_err);
1471 return;
1472 }
1473
1474 monitor_printf(mon, "Host virtual address for 0x%" HWADDR_PRIx
1475 " (%s) is %p\n",
1476 addr, mr->name, ptr);
1477
1478 memory_region_unref(mr);
1479 }
1480
1481 #ifdef CONFIG_LINUX
1482 static uint64_t vtop(void *ptr, Error **errp)
1483 {
1484 uint64_t pinfo;
1485 uint64_t ret = -1;
1486 uintptr_t addr = (uintptr_t) ptr;
1487 uintptr_t pagesize = getpagesize();
1488 off_t offset = addr / pagesize * sizeof(pinfo);
1489 int fd;
1490
1491 fd = open("/proc/self/pagemap", O_RDONLY);
1492 if (fd == -1) {
1493 error_setg_errno(errp, errno, "Cannot open /proc/self/pagemap");
1494 return -1;
1495 }
1496
1497 /* Force copy-on-write if necessary. */
1498 atomic_add((uint8_t *)ptr, 0);
1499
1500 if (pread(fd, &pinfo, sizeof(pinfo), offset) != sizeof(pinfo)) {
1501 error_setg_errno(errp, errno, "Cannot read pagemap");
1502 goto out;
1503 }
1504 if ((pinfo & (1ull << 63)) == 0) {
1505 error_setg(errp, "Page not present");
1506 goto out;
1507 }
1508 ret = ((pinfo & 0x007fffffffffffffull) * pagesize) | (addr & (pagesize - 1));
1509
1510 out:
1511 close(fd);
1512 return ret;
1513 }
1514
1515 static void hmp_gpa2hpa(Monitor *mon, const QDict *qdict)
1516 {
1517 hwaddr addr = qdict_get_int(qdict, "addr");
1518 Error *local_err = NULL;
1519 MemoryRegion *mr = NULL;
1520 void *ptr;
1521 uint64_t physaddr;
1522
1523 ptr = gpa2hva(&mr, addr, &local_err);
1524 if (local_err) {
1525 error_report_err(local_err);
1526 return;
1527 }
1528
1529 physaddr = vtop(ptr, &local_err);
1530 if (local_err) {
1531 error_report_err(local_err);
1532 } else {
1533 monitor_printf(mon, "Host physical address for 0x%" HWADDR_PRIx
1534 " (%s) is 0x%" PRIx64 "\n",
1535 addr, mr->name, (uint64_t) physaddr);
1536 }
1537
1538 memory_region_unref(mr);
1539 }
1540 #endif
1541
1542 static void do_print(Monitor *mon, const QDict *qdict)
1543 {
1544 int format = qdict_get_int(qdict, "format");
1545 hwaddr val = qdict_get_int(qdict, "val");
1546
1547 switch(format) {
1548 case 'o':
1549 monitor_printf(mon, "%#" HWADDR_PRIo, val);
1550 break;
1551 case 'x':
1552 monitor_printf(mon, "%#" HWADDR_PRIx, val);
1553 break;
1554 case 'u':
1555 monitor_printf(mon, "%" HWADDR_PRIu, val);
1556 break;
1557 default:
1558 case 'd':
1559 monitor_printf(mon, "%" HWADDR_PRId, val);
1560 break;
1561 case 'c':
1562 monitor_printc(mon, val);
1563 break;
1564 }
1565 monitor_printf(mon, "\n");
1566 }
1567
1568 static void hmp_sum(Monitor *mon, const QDict *qdict)
1569 {
1570 uint32_t addr;
1571 uint16_t sum;
1572 uint32_t start = qdict_get_int(qdict, "start");
1573 uint32_t size = qdict_get_int(qdict, "size");
1574
1575 sum = 0;
1576 for(addr = start; addr < (start + size); addr++) {
1577 uint8_t val = address_space_ldub(&address_space_memory, addr,
1578 MEMTXATTRS_UNSPECIFIED, NULL);
1579 /* BSD sum algorithm ('sum' Unix command) */
1580 sum = (sum >> 1) | (sum << 15);
1581 sum += val;
1582 }
1583 monitor_printf(mon, "%05d\n", sum);
1584 }
1585
1586 static int mouse_button_state;
1587
1588 static void hmp_mouse_move(Monitor *mon, const QDict *qdict)
1589 {
1590 int dx, dy, dz, button;
1591 const char *dx_str = qdict_get_str(qdict, "dx_str");
1592 const char *dy_str = qdict_get_str(qdict, "dy_str");
1593 const char *dz_str = qdict_get_try_str(qdict, "dz_str");
1594
1595 dx = strtol(dx_str, NULL, 0);
1596 dy = strtol(dy_str, NULL, 0);
1597 qemu_input_queue_rel(NULL, INPUT_AXIS_X, dx);
1598 qemu_input_queue_rel(NULL, INPUT_AXIS_Y, dy);
1599
1600 if (dz_str) {
1601 dz = strtol(dz_str, NULL, 0);
1602 if (dz != 0) {
1603 button = (dz > 0) ? INPUT_BUTTON_WHEEL_UP : INPUT_BUTTON_WHEEL_DOWN;
1604 qemu_input_queue_btn(NULL, button, true);
1605 qemu_input_event_sync();
1606 qemu_input_queue_btn(NULL, button, false);
1607 }
1608 }
1609 qemu_input_event_sync();
1610 }
1611
1612 static void hmp_mouse_button(Monitor *mon, const QDict *qdict)
1613 {
1614 static uint32_t bmap[INPUT_BUTTON__MAX] = {
1615 [INPUT_BUTTON_LEFT] = MOUSE_EVENT_LBUTTON,
1616 [INPUT_BUTTON_MIDDLE] = MOUSE_EVENT_MBUTTON,
1617 [INPUT_BUTTON_RIGHT] = MOUSE_EVENT_RBUTTON,
1618 };
1619 int button_state = qdict_get_int(qdict, "button_state");
1620
1621 if (mouse_button_state == button_state) {
1622 return;
1623 }
1624 qemu_input_update_buttons(NULL, bmap, mouse_button_state, button_state);
1625 qemu_input_event_sync();
1626 mouse_button_state = button_state;
1627 }
1628
1629 static void hmp_ioport_read(Monitor *mon, const QDict *qdict)
1630 {
1631 int size = qdict_get_int(qdict, "size");
1632 int addr = qdict_get_int(qdict, "addr");
1633 int has_index = qdict_haskey(qdict, "index");
1634 uint32_t val;
1635 int suffix;
1636
1637 if (has_index) {
1638 int index = qdict_get_int(qdict, "index");
1639 cpu_outb(addr & IOPORTS_MASK, index & 0xff);
1640 addr++;
1641 }
1642 addr &= 0xffff;
1643
1644 switch(size) {
1645 default:
1646 case 1:
1647 val = cpu_inb(addr);
1648 suffix = 'b';
1649 break;
1650 case 2:
1651 val = cpu_inw(addr);
1652 suffix = 'w';
1653 break;
1654 case 4:
1655 val = cpu_inl(addr);
1656 suffix = 'l';
1657 break;
1658 }
1659 monitor_printf(mon, "port%c[0x%04x] = %#0*x\n",
1660 suffix, addr, size * 2, val);
1661 }
1662
1663 static void hmp_ioport_write(Monitor *mon, const QDict *qdict)
1664 {
1665 int size = qdict_get_int(qdict, "size");
1666 int addr = qdict_get_int(qdict, "addr");
1667 int val = qdict_get_int(qdict, "val");
1668
1669 addr &= IOPORTS_MASK;
1670
1671 switch (size) {
1672 default:
1673 case 1:
1674 cpu_outb(addr, val);
1675 break;
1676 case 2:
1677 cpu_outw(addr, val);
1678 break;
1679 case 4:
1680 cpu_outl(addr, val);
1681 break;
1682 }
1683 }
1684
1685 static void hmp_boot_set(Monitor *mon, const QDict *qdict)
1686 {
1687 Error *local_err = NULL;
1688 const char *bootdevice = qdict_get_str(qdict, "bootdevice");
1689
1690 qemu_boot_set(bootdevice, &local_err);
1691 if (local_err) {
1692 error_report_err(local_err);
1693 } else {
1694 monitor_printf(mon, "boot device list now set to %s\n", bootdevice);
1695 }
1696 }
1697
1698 static void hmp_info_mtree(Monitor *mon, const QDict *qdict)
1699 {
1700 bool flatview = qdict_get_try_bool(qdict, "flatview", false);
1701 bool dispatch_tree = qdict_get_try_bool(qdict, "dispatch_tree", false);
1702
1703 mtree_info((fprintf_function)monitor_printf, mon, flatview, dispatch_tree);
1704 }
1705
1706 static void hmp_info_numa(Monitor *mon, const QDict *qdict)
1707 {
1708 int i;
1709 NumaNodeMem *node_mem;
1710 CpuInfoList *cpu_list, *cpu;
1711
1712 cpu_list = qmp_query_cpus(&error_abort);
1713 node_mem = g_new0(NumaNodeMem, nb_numa_nodes);
1714
1715 query_numa_node_mem(node_mem);
1716 monitor_printf(mon, "%d nodes\n", nb_numa_nodes);
1717 for (i = 0; i < nb_numa_nodes; i++) {
1718 monitor_printf(mon, "node %d cpus:", i);
1719 for (cpu = cpu_list; cpu; cpu = cpu->next) {
1720 if (cpu->value->has_props && cpu->value->props->has_node_id &&
1721 cpu->value->props->node_id == i) {
1722 monitor_printf(mon, " %" PRIi64, cpu->value->CPU);
1723 }
1724 }
1725 monitor_printf(mon, "\n");
1726 monitor_printf(mon, "node %d size: %" PRId64 " MB\n", i,
1727 node_mem[i].node_mem >> 20);
1728 monitor_printf(mon, "node %d plugged: %" PRId64 " MB\n", i,
1729 node_mem[i].node_plugged_mem >> 20);
1730 }
1731 qapi_free_CpuInfoList(cpu_list);
1732 g_free(node_mem);
1733 }
1734
1735 #ifdef CONFIG_PROFILER
1736
1737 int64_t tcg_time;
1738 int64_t dev_time;
1739
1740 static void hmp_info_profile(Monitor *mon, const QDict *qdict)
1741 {
1742 monitor_printf(mon, "async time %" PRId64 " (%0.3f)\n",
1743 dev_time, dev_time / (double)NANOSECONDS_PER_SECOND);
1744 monitor_printf(mon, "qemu time %" PRId64 " (%0.3f)\n",
1745 tcg_time, tcg_time / (double)NANOSECONDS_PER_SECOND);
1746 tcg_time = 0;
1747 dev_time = 0;
1748 }
1749 #else
1750 static void hmp_info_profile(Monitor *mon, const QDict *qdict)
1751 {
1752 monitor_printf(mon, "Internal profiler not compiled\n");
1753 }
1754 #endif
1755
1756 /* Capture support */
1757 static QLIST_HEAD (capture_list_head, CaptureState) capture_head;
1758
1759 static void hmp_info_capture(Monitor *mon, const QDict *qdict)
1760 {
1761 int i;
1762 CaptureState *s;
1763
1764 for (s = capture_head.lh_first, i = 0; s; s = s->entries.le_next, ++i) {
1765 monitor_printf(mon, "[%d]: ", i);
1766 s->ops.info (s->opaque);
1767 }
1768 }
1769
1770 static void hmp_stopcapture(Monitor *mon, const QDict *qdict)
1771 {
1772 int i;
1773 int n = qdict_get_int(qdict, "n");
1774 CaptureState *s;
1775
1776 for (s = capture_head.lh_first, i = 0; s; s = s->entries.le_next, ++i) {
1777 if (i == n) {
1778 s->ops.destroy (s->opaque);
1779 QLIST_REMOVE (s, entries);
1780 g_free (s);
1781 return;
1782 }
1783 }
1784 }
1785
1786 static void hmp_wavcapture(Monitor *mon, const QDict *qdict)
1787 {
1788 const char *path = qdict_get_str(qdict, "path");
1789 int has_freq = qdict_haskey(qdict, "freq");
1790 int freq = qdict_get_try_int(qdict, "freq", -1);
1791 int has_bits = qdict_haskey(qdict, "bits");
1792 int bits = qdict_get_try_int(qdict, "bits", -1);
1793 int has_channels = qdict_haskey(qdict, "nchannels");
1794 int nchannels = qdict_get_try_int(qdict, "nchannels", -1);
1795 CaptureState *s;
1796
1797 s = g_malloc0 (sizeof (*s));
1798
1799 freq = has_freq ? freq : 44100;
1800 bits = has_bits ? bits : 16;
1801 nchannels = has_channels ? nchannels : 2;
1802
1803 if (wav_start_capture (s, path, freq, bits, nchannels)) {
1804 monitor_printf(mon, "Failed to add wave capture\n");
1805 g_free (s);
1806 return;
1807 }
1808 QLIST_INSERT_HEAD (&capture_head, s, entries);
1809 }
1810
1811 static qemu_acl *find_acl(Monitor *mon, const char *name)
1812 {
1813 qemu_acl *acl = qemu_acl_find(name);
1814
1815 if (!acl) {
1816 monitor_printf(mon, "acl: unknown list '%s'\n", name);
1817 }
1818 return acl;
1819 }
1820
1821 static void hmp_acl_show(Monitor *mon, const QDict *qdict)
1822 {
1823 const char *aclname = qdict_get_str(qdict, "aclname");
1824 qemu_acl *acl = find_acl(mon, aclname);
1825 qemu_acl_entry *entry;
1826 int i = 0;
1827
1828 if (acl) {
1829 monitor_printf(mon, "policy: %s\n",
1830 acl->defaultDeny ? "deny" : "allow");
1831 QTAILQ_FOREACH(entry, &acl->entries, next) {
1832 i++;
1833 monitor_printf(mon, "%d: %s %s\n", i,
1834 entry->deny ? "deny" : "allow", entry->match);
1835 }
1836 }
1837 }
1838
1839 static void hmp_acl_reset(Monitor *mon, const QDict *qdict)
1840 {
1841 const char *aclname = qdict_get_str(qdict, "aclname");
1842 qemu_acl *acl = find_acl(mon, aclname);
1843
1844 if (acl) {
1845 qemu_acl_reset(acl);
1846 monitor_printf(mon, "acl: removed all rules\n");
1847 }
1848 }
1849
1850 static void hmp_acl_policy(Monitor *mon, const QDict *qdict)
1851 {
1852 const char *aclname = qdict_get_str(qdict, "aclname");
1853 const char *policy = qdict_get_str(qdict, "policy");
1854 qemu_acl *acl = find_acl(mon, aclname);
1855
1856 if (acl) {
1857 if (strcmp(policy, "allow") == 0) {
1858 acl->defaultDeny = 0;
1859 monitor_printf(mon, "acl: policy set to 'allow'\n");
1860 } else if (strcmp(policy, "deny") == 0) {
1861 acl->defaultDeny = 1;
1862 monitor_printf(mon, "acl: policy set to 'deny'\n");
1863 } else {
1864 monitor_printf(mon, "acl: unknown policy '%s', "
1865 "expected 'deny' or 'allow'\n", policy);
1866 }
1867 }
1868 }
1869
1870 static void hmp_acl_add(Monitor *mon, const QDict *qdict)
1871 {
1872 const char *aclname = qdict_get_str(qdict, "aclname");
1873 const char *match = qdict_get_str(qdict, "match");
1874 const char *policy = qdict_get_str(qdict, "policy");
1875 int has_index = qdict_haskey(qdict, "index");
1876 int index = qdict_get_try_int(qdict, "index", -1);
1877 qemu_acl *acl = find_acl(mon, aclname);
1878 int deny, ret;
1879
1880 if (acl) {
1881 if (strcmp(policy, "allow") == 0) {
1882 deny = 0;
1883 } else if (strcmp(policy, "deny") == 0) {
1884 deny = 1;
1885 } else {
1886 monitor_printf(mon, "acl: unknown policy '%s', "
1887 "expected 'deny' or 'allow'\n", policy);
1888 return;
1889 }
1890 if (has_index)
1891 ret = qemu_acl_insert(acl, deny, match, index);
1892 else
1893 ret = qemu_acl_append(acl, deny, match);
1894 if (ret < 0)
1895 monitor_printf(mon, "acl: unable to add acl entry\n");
1896 else
1897 monitor_printf(mon, "acl: added rule at position %d\n", ret);
1898 }
1899 }
1900
1901 static void hmp_acl_remove(Monitor *mon, const QDict *qdict)
1902 {
1903 const char *aclname = qdict_get_str(qdict, "aclname");
1904 const char *match = qdict_get_str(qdict, "match");
1905 qemu_acl *acl = find_acl(mon, aclname);
1906 int ret;
1907
1908 if (acl) {
1909 ret = qemu_acl_remove(acl, match);
1910 if (ret < 0)
1911 monitor_printf(mon, "acl: no matching acl entry\n");
1912 else
1913 monitor_printf(mon, "acl: removed rule at position %d\n", ret);
1914 }
1915 }
1916
1917 void qmp_getfd(const char *fdname, Error **errp)
1918 {
1919 mon_fd_t *monfd;
1920 int fd;
1921
1922 fd = qemu_chr_fe_get_msgfd(&cur_mon->chr);
1923 if (fd == -1) {
1924 error_setg(errp, QERR_FD_NOT_SUPPLIED);
1925 return;
1926 }
1927
1928 if (qemu_isdigit(fdname[0])) {
1929 close(fd);
1930 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "fdname",
1931 "a name not starting with a digit");
1932 return;
1933 }
1934
1935 QLIST_FOREACH(monfd, &cur_mon->fds, next) {
1936 if (strcmp(monfd->name, fdname) != 0) {
1937 continue;
1938 }
1939
1940 close(monfd->fd);
1941 monfd->fd = fd;
1942 return;
1943 }
1944
1945 monfd = g_malloc0(sizeof(mon_fd_t));
1946 monfd->name = g_strdup(fdname);
1947 monfd->fd = fd;
1948
1949 QLIST_INSERT_HEAD(&cur_mon->fds, monfd, next);
1950 }
1951
1952 void qmp_closefd(const char *fdname, Error **errp)
1953 {
1954 mon_fd_t *monfd;
1955
1956 QLIST_FOREACH(monfd, &cur_mon->fds, next) {
1957 if (strcmp(monfd->name, fdname) != 0) {
1958 continue;
1959 }
1960
1961 QLIST_REMOVE(monfd, next);
1962 close(monfd->fd);
1963 g_free(monfd->name);
1964 g_free(monfd);
1965 return;
1966 }
1967
1968 error_setg(errp, QERR_FD_NOT_FOUND, fdname);
1969 }
1970
1971 int monitor_get_fd(Monitor *mon, const char *fdname, Error **errp)
1972 {
1973 mon_fd_t *monfd;
1974
1975 QLIST_FOREACH(monfd, &mon->fds, next) {
1976 int fd;
1977
1978 if (strcmp(monfd->name, fdname) != 0) {
1979 continue;
1980 }
1981
1982 fd = monfd->fd;
1983
1984 /* caller takes ownership of fd */
1985 QLIST_REMOVE(monfd, next);
1986 g_free(monfd->name);
1987 g_free(monfd);
1988
1989 return fd;
1990 }
1991
1992 error_setg(errp, "File descriptor named '%s' has not been found", fdname);
1993 return -1;
1994 }
1995
1996 static void monitor_fdset_cleanup(MonFdset *mon_fdset)
1997 {
1998 MonFdsetFd *mon_fdset_fd;
1999 MonFdsetFd *mon_fdset_fd_next;
2000
2001 QLIST_FOREACH_SAFE(mon_fdset_fd, &mon_fdset->fds, next, mon_fdset_fd_next) {
2002 if ((mon_fdset_fd->removed ||
2003 (QLIST_EMPTY(&mon_fdset->dup_fds) && mon_refcount == 0)) &&
2004 runstate_is_running()) {
2005 close(mon_fdset_fd->fd);
2006 g_free(mon_fdset_fd->opaque);
2007 QLIST_REMOVE(mon_fdset_fd, next);
2008 g_free(mon_fdset_fd);
2009 }
2010 }
2011
2012 if (QLIST_EMPTY(&mon_fdset->fds) && QLIST_EMPTY(&mon_fdset->dup_fds)) {
2013 QLIST_REMOVE(mon_fdset, next);
2014 g_free(mon_fdset);
2015 }
2016 }
2017
2018 static void monitor_fdsets_cleanup(void)
2019 {
2020 MonFdset *mon_fdset;
2021 MonFdset *mon_fdset_next;
2022
2023 QLIST_FOREACH_SAFE(mon_fdset, &mon_fdsets, next, mon_fdset_next) {
2024 monitor_fdset_cleanup(mon_fdset);
2025 }
2026 }
2027
2028 AddfdInfo *qmp_add_fd(bool has_fdset_id, int64_t fdset_id, bool has_opaque,
2029 const char *opaque, Error **errp)
2030 {
2031 int fd;
2032 Monitor *mon = cur_mon;
2033 AddfdInfo *fdinfo;
2034
2035 fd = qemu_chr_fe_get_msgfd(&mon->chr);
2036 if (fd == -1) {
2037 error_setg(errp, QERR_FD_NOT_SUPPLIED);
2038 goto error;
2039 }
2040
2041 fdinfo = monitor_fdset_add_fd(fd, has_fdset_id, fdset_id,
2042 has_opaque, opaque, errp);
2043 if (fdinfo) {
2044 return fdinfo;
2045 }
2046
2047 error:
2048 if (fd != -1) {
2049 close(fd);
2050 }
2051 return NULL;
2052 }
2053
2054 void qmp_remove_fd(int64_t fdset_id, bool has_fd, int64_t fd, Error **errp)
2055 {
2056 MonFdset *mon_fdset;
2057 MonFdsetFd *mon_fdset_fd;
2058 char fd_str[60];
2059
2060 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2061 if (mon_fdset->id != fdset_id) {
2062 continue;
2063 }
2064 QLIST_FOREACH(mon_fdset_fd, &mon_fdset->fds, next) {
2065 if (has_fd) {
2066 if (mon_fdset_fd->fd != fd) {
2067 continue;
2068 }
2069 mon_fdset_fd->removed = true;
2070 break;
2071 } else {
2072 mon_fdset_fd->removed = true;
2073 }
2074 }
2075 if (has_fd && !mon_fdset_fd) {
2076 goto error;
2077 }
2078 monitor_fdset_cleanup(mon_fdset);
2079 return;
2080 }
2081
2082 error:
2083 if (has_fd) {
2084 snprintf(fd_str, sizeof(fd_str), "fdset-id:%" PRId64 ", fd:%" PRId64,
2085 fdset_id, fd);
2086 } else {
2087 snprintf(fd_str, sizeof(fd_str), "fdset-id:%" PRId64, fdset_id);
2088 }
2089 error_setg(errp, QERR_FD_NOT_FOUND, fd_str);
2090 }
2091
2092 FdsetInfoList *qmp_query_fdsets(Error **errp)
2093 {
2094 MonFdset *mon_fdset;
2095 MonFdsetFd *mon_fdset_fd;
2096 FdsetInfoList *fdset_list = NULL;
2097
2098 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2099 FdsetInfoList *fdset_info = g_malloc0(sizeof(*fdset_info));
2100 FdsetFdInfoList *fdsetfd_list = NULL;
2101
2102 fdset_info->value = g_malloc0(sizeof(*fdset_info->value));
2103 fdset_info->value->fdset_id = mon_fdset->id;
2104
2105 QLIST_FOREACH(mon_fdset_fd, &mon_fdset->fds, next) {
2106 FdsetFdInfoList *fdsetfd_info;
2107
2108 fdsetfd_info = g_malloc0(sizeof(*fdsetfd_info));
2109 fdsetfd_info->value = g_malloc0(sizeof(*fdsetfd_info->value));
2110 fdsetfd_info->value->fd = mon_fdset_fd->fd;
2111 if (mon_fdset_fd->opaque) {
2112 fdsetfd_info->value->has_opaque = true;
2113 fdsetfd_info->value->opaque = g_strdup(mon_fdset_fd->opaque);
2114 } else {
2115 fdsetfd_info->value->has_opaque = false;
2116 }
2117
2118 fdsetfd_info->next = fdsetfd_list;
2119 fdsetfd_list = fdsetfd_info;
2120 }
2121
2122 fdset_info->value->fds = fdsetfd_list;
2123
2124 fdset_info->next = fdset_list;
2125 fdset_list = fdset_info;
2126 }
2127
2128 return fdset_list;
2129 }
2130
2131 AddfdInfo *monitor_fdset_add_fd(int fd, bool has_fdset_id, int64_t fdset_id,
2132 bool has_opaque, const char *opaque,
2133 Error **errp)
2134 {
2135 MonFdset *mon_fdset = NULL;
2136 MonFdsetFd *mon_fdset_fd;
2137 AddfdInfo *fdinfo;
2138
2139 if (has_fdset_id) {
2140 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2141 /* Break if match found or match impossible due to ordering by ID */
2142 if (fdset_id <= mon_fdset->id) {
2143 if (fdset_id < mon_fdset->id) {
2144 mon_fdset = NULL;
2145 }
2146 break;
2147 }
2148 }
2149 }
2150
2151 if (mon_fdset == NULL) {
2152 int64_t fdset_id_prev = -1;
2153 MonFdset *mon_fdset_cur = QLIST_FIRST(&mon_fdsets);
2154
2155 if (has_fdset_id) {
2156 if (fdset_id < 0) {
2157 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "fdset-id",
2158 "a non-negative value");
2159 return NULL;
2160 }
2161 /* Use specified fdset ID */
2162 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2163 mon_fdset_cur = mon_fdset;
2164 if (fdset_id < mon_fdset_cur->id) {
2165 break;
2166 }
2167 }
2168 } else {
2169 /* Use first available fdset ID */
2170 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2171 mon_fdset_cur = mon_fdset;
2172 if (fdset_id_prev == mon_fdset_cur->id - 1) {
2173 fdset_id_prev = mon_fdset_cur->id;
2174 continue;
2175 }
2176 break;
2177 }
2178 }
2179
2180 mon_fdset = g_malloc0(sizeof(*mon_fdset));
2181 if (has_fdset_id) {
2182 mon_fdset->id = fdset_id;
2183 } else {
2184 mon_fdset->id = fdset_id_prev + 1;
2185 }
2186
2187 /* The fdset list is ordered by fdset ID */
2188 if (!mon_fdset_cur) {
2189 QLIST_INSERT_HEAD(&mon_fdsets, mon_fdset, next);
2190 } else if (mon_fdset->id < mon_fdset_cur->id) {
2191 QLIST_INSERT_BEFORE(mon_fdset_cur, mon_fdset, next);
2192 } else {
2193 QLIST_INSERT_AFTER(mon_fdset_cur, mon_fdset, next);
2194 }
2195 }
2196
2197 mon_fdset_fd = g_malloc0(sizeof(*mon_fdset_fd));
2198 mon_fdset_fd->fd = fd;
2199 mon_fdset_fd->removed = false;
2200 if (has_opaque) {
2201 mon_fdset_fd->opaque = g_strdup(opaque);
2202 }
2203 QLIST_INSERT_HEAD(&mon_fdset->fds, mon_fdset_fd, next);
2204
2205 fdinfo = g_malloc0(sizeof(*fdinfo));
2206 fdinfo->fdset_id = mon_fdset->id;
2207 fdinfo->fd = mon_fdset_fd->fd;
2208
2209 return fdinfo;
2210 }
2211
2212 int monitor_fdset_get_fd(int64_t fdset_id, int flags)
2213 {
2214 #ifndef _WIN32
2215 MonFdset *mon_fdset;
2216 MonFdsetFd *mon_fdset_fd;
2217 int mon_fd_flags;
2218
2219 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2220 if (mon_fdset->id != fdset_id) {
2221 continue;
2222 }
2223 QLIST_FOREACH(mon_fdset_fd, &mon_fdset->fds, next) {
2224 mon_fd_flags = fcntl(mon_fdset_fd->fd, F_GETFL);
2225 if (mon_fd_flags == -1) {
2226 return -1;
2227 }
2228
2229 if ((flags & O_ACCMODE) == (mon_fd_flags & O_ACCMODE)) {
2230 return mon_fdset_fd->fd;
2231 }
2232 }
2233 errno = EACCES;
2234 return -1;
2235 }
2236 #endif
2237
2238 errno = ENOENT;
2239 return -1;
2240 }
2241
2242 int monitor_fdset_dup_fd_add(int64_t fdset_id, int dup_fd)
2243 {
2244 MonFdset *mon_fdset;
2245 MonFdsetFd *mon_fdset_fd_dup;
2246
2247 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2248 if (mon_fdset->id != fdset_id) {
2249 continue;
2250 }
2251 QLIST_FOREACH(mon_fdset_fd_dup, &mon_fdset->dup_fds, next) {
2252 if (mon_fdset_fd_dup->fd == dup_fd) {
2253 return -1;
2254 }
2255 }
2256 mon_fdset_fd_dup = g_malloc0(sizeof(*mon_fdset_fd_dup));
2257 mon_fdset_fd_dup->fd = dup_fd;
2258 QLIST_INSERT_HEAD(&mon_fdset->dup_fds, mon_fdset_fd_dup, next);
2259 return 0;
2260 }
2261 return -1;
2262 }
2263
2264 static int monitor_fdset_dup_fd_find_remove(int dup_fd, bool remove)
2265 {
2266 MonFdset *mon_fdset;
2267 MonFdsetFd *mon_fdset_fd_dup;
2268
2269 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2270 QLIST_FOREACH(mon_fdset_fd_dup, &mon_fdset->dup_fds, next) {
2271 if (mon_fdset_fd_dup->fd == dup_fd) {
2272 if (remove) {
2273 QLIST_REMOVE(mon_fdset_fd_dup, next);
2274 if (QLIST_EMPTY(&mon_fdset->dup_fds)) {
2275 monitor_fdset_cleanup(mon_fdset);
2276 }
2277 return -1;
2278 } else {
2279 return mon_fdset->id;
2280 }
2281 }
2282 }
2283 }
2284 return -1;
2285 }
2286
2287 int monitor_fdset_dup_fd_find(int dup_fd)
2288 {
2289 return monitor_fdset_dup_fd_find_remove(dup_fd, false);
2290 }
2291
2292 void monitor_fdset_dup_fd_remove(int dup_fd)
2293 {
2294 monitor_fdset_dup_fd_find_remove(dup_fd, true);
2295 }
2296
2297 int monitor_fd_param(Monitor *mon, const char *fdname, Error **errp)
2298 {
2299 int fd;
2300 Error *local_err = NULL;
2301
2302 if (!qemu_isdigit(fdname[0]) && mon) {
2303 fd = monitor_get_fd(mon, fdname, &local_err);
2304 } else {
2305 fd = qemu_parse_fd(fdname);
2306 if (fd == -1) {
2307 error_setg(&local_err, "Invalid file descriptor number '%s'",
2308 fdname);
2309 }
2310 }
2311 if (local_err) {
2312 error_propagate(errp, local_err);
2313 assert(fd == -1);
2314 } else {
2315 assert(fd != -1);
2316 }
2317
2318 return fd;
2319 }
2320
2321 /* Please update hmp-commands.hx when adding or changing commands */
2322 static mon_cmd_t info_cmds[] = {
2323 #include "hmp-commands-info.h"
2324 { NULL, NULL, },
2325 };
2326
2327 /* mon_cmds and info_cmds would be sorted at runtime */
2328 static mon_cmd_t mon_cmds[] = {
2329 #include "hmp-commands.h"
2330 { NULL, NULL, },
2331 };
2332
2333 /*******************************************************************/
2334
2335 static const char *pch;
2336 static sigjmp_buf expr_env;
2337
2338
2339 static void GCC_FMT_ATTR(2, 3) QEMU_NORETURN
2340 expr_error(Monitor *mon, const char *fmt, ...)
2341 {
2342 va_list ap;
2343 va_start(ap, fmt);
2344 monitor_vprintf(mon, fmt, ap);
2345 monitor_printf(mon, "\n");
2346 va_end(ap);
2347 siglongjmp(expr_env, 1);
2348 }
2349
2350 /* return 0 if OK, -1 if not found */
2351 static int get_monitor_def(target_long *pval, const char *name)
2352 {
2353 const MonitorDef *md = target_monitor_defs();
2354 CPUState *cs = mon_get_cpu();
2355 void *ptr;
2356 uint64_t tmp = 0;
2357 int ret;
2358
2359 if (cs == NULL || md == NULL) {
2360 return -1;
2361 }
2362
2363 for(; md->name != NULL; md++) {
2364 if (compare_cmd(name, md->name)) {
2365 if (md->get_value) {
2366 *pval = md->get_value(md, md->offset);
2367 } else {
2368 CPUArchState *env = mon_get_cpu_env();
2369 ptr = (uint8_t *)env + md->offset;
2370 switch(md->type) {
2371 case MD_I32:
2372 *pval = *(int32_t *)ptr;
2373 break;
2374 case MD_TLONG:
2375 *pval = *(target_long *)ptr;
2376 break;
2377 default:
2378 *pval = 0;
2379 break;
2380 }
2381 }
2382 return 0;
2383 }
2384 }
2385
2386 ret = target_get_monitor_def(cs, name, &tmp);
2387 if (!ret) {
2388 *pval = (target_long) tmp;
2389 }
2390
2391 return ret;
2392 }
2393
2394 static void next(void)
2395 {
2396 if (*pch != '\0') {
2397 pch++;
2398 while (qemu_isspace(*pch))
2399 pch++;
2400 }
2401 }
2402
2403 static int64_t expr_sum(Monitor *mon);
2404
2405 static int64_t expr_unary(Monitor *mon)
2406 {
2407 int64_t n;
2408 char *p;
2409 int ret;
2410
2411 switch(*pch) {
2412 case '+':
2413 next();
2414 n = expr_unary(mon);
2415 break;
2416 case '-':
2417 next();
2418 n = -expr_unary(mon);
2419 break;
2420 case '~':
2421 next();
2422 n = ~expr_unary(mon);
2423 break;
2424 case '(':
2425 next();
2426 n = expr_sum(mon);
2427 if (*pch != ')') {
2428 expr_error(mon, "')' expected");
2429 }
2430 next();
2431 break;
2432 case '\'':
2433 pch++;
2434 if (*pch == '\0')
2435 expr_error(mon, "character constant expected");
2436 n = *pch;
2437 pch++;
2438 if (*pch != '\'')
2439 expr_error(mon, "missing terminating \' character");
2440 next();
2441 break;
2442 case '$':
2443 {
2444 char buf[128], *q;
2445 target_long reg=0;
2446
2447 pch++;
2448 q = buf;
2449 while ((*pch >= 'a' && *pch <= 'z') ||
2450 (*pch >= 'A' && *pch <= 'Z') ||
2451 (*pch >= '0' && *pch <= '9') ||
2452 *pch == '_' || *pch == '.') {
2453 if ((q - buf) < sizeof(buf) - 1)
2454 *q++ = *pch;
2455 pch++;
2456 }
2457 while (qemu_isspace(*pch))
2458 pch++;
2459 *q = 0;
2460 ret = get_monitor_def(&reg, buf);
2461 if (ret < 0)
2462 expr_error(mon, "unknown register");
2463 n = reg;
2464 }
2465 break;
2466 case '\0':
2467 expr_error(mon, "unexpected end of expression");
2468 n = 0;
2469 break;
2470 default:
2471 errno = 0;
2472 n = strtoull(pch, &p, 0);
2473 if (errno == ERANGE) {
2474 expr_error(mon, "number too large");
2475 }
2476 if (pch == p) {
2477 expr_error(mon, "invalid char '%c' in expression", *p);
2478 }
2479 pch = p;
2480 while (qemu_isspace(*pch))
2481 pch++;
2482 break;
2483 }
2484 return n;
2485 }
2486
2487
2488 static int64_t expr_prod(Monitor *mon)
2489 {
2490 int64_t val, val2;
2491 int op;
2492
2493 val = expr_unary(mon);
2494 for(;;) {
2495 op = *pch;
2496 if (op != '*' && op != '/' && op != '%')
2497 break;
2498 next();
2499 val2 = expr_unary(mon);
2500 switch(op) {
2501 default:
2502 case '*':
2503 val *= val2;
2504 break;
2505 case '/':
2506 case '%':
2507 if (val2 == 0)
2508 expr_error(mon, "division by zero");
2509 if (op == '/')
2510 val /= val2;
2511 else
2512 val %= val2;
2513 break;
2514 }
2515 }
2516 return val;
2517 }
2518
2519 static int64_t expr_logic(Monitor *mon)
2520 {
2521 int64_t val, val2;
2522 int op;
2523
2524 val = expr_prod(mon);
2525 for(;;) {
2526 op = *pch;
2527 if (op != '&' && op != '|' && op != '^')
2528 break;
2529 next();
2530 val2 = expr_prod(mon);
2531 switch(op) {
2532 default:
2533 case '&':
2534 val &= val2;
2535 break;
2536 case '|':
2537 val |= val2;
2538 break;
2539 case '^':
2540 val ^= val2;
2541 break;
2542 }
2543 }
2544 return val;
2545 }
2546
2547 static int64_t expr_sum(Monitor *mon)
2548 {
2549 int64_t val, val2;
2550 int op;
2551
2552 val = expr_logic(mon);
2553 for(;;) {
2554 op = *pch;
2555 if (op != '+' && op != '-')
2556 break;
2557 next();
2558 val2 = expr_logic(mon);
2559 if (op == '+')
2560 val += val2;
2561 else
2562 val -= val2;
2563 }
2564 return val;
2565 }
2566
2567 static int get_expr(Monitor *mon, int64_t *pval, const char **pp)
2568 {
2569 pch = *pp;
2570 if (sigsetjmp(expr_env, 0)) {
2571 *pp = pch;
2572 return -1;
2573 }
2574 while (qemu_isspace(*pch))
2575 pch++;
2576 *pval = expr_sum(mon);
2577 *pp = pch;
2578 return 0;
2579 }
2580
2581 static int get_double(Monitor *mon, double *pval, const char **pp)
2582 {
2583 const char *p = *pp;
2584 char *tailp;
2585 double d;
2586
2587 d = strtod(p, &tailp);
2588 if (tailp == p) {
2589 monitor_printf(mon, "Number expected\n");
2590 return -1;
2591 }
2592 if (d != d || d - d != 0) {
2593 /* NaN or infinity */
2594 monitor_printf(mon, "Bad number\n");
2595 return -1;
2596 }
2597 *pval = d;
2598 *pp = tailp;
2599 return 0;
2600 }
2601
2602 /*
2603 * Store the command-name in cmdname, and return a pointer to
2604 * the remaining of the command string.
2605 */
2606 static const char *get_command_name(const char *cmdline,
2607 char *cmdname, size_t nlen)
2608 {
2609 size_t len;
2610 const char *p, *pstart;
2611
2612 p = cmdline;
2613 while (qemu_isspace(*p))
2614 p++;
2615 if (*p == '\0')
2616 return NULL;
2617 pstart = p;
2618 while (*p != '\0' && *p != '/' && !qemu_isspace(*p))
2619 p++;
2620 len = p - pstart;
2621 if (len > nlen - 1)
2622 len = nlen - 1;
2623 memcpy(cmdname, pstart, len);
2624 cmdname[len] = '\0';
2625 return p;
2626 }
2627
2628 /**
2629 * Read key of 'type' into 'key' and return the current
2630 * 'type' pointer.
2631 */
2632 static char *key_get_info(const char *type, char **key)
2633 {
2634 size_t len;
2635 char *p, *str;
2636
2637 if (*type == ',')
2638 type++;
2639
2640 p = strchr(type, ':');
2641 if (!p) {
2642 *key = NULL;
2643 return NULL;
2644 }
2645 len = p - type;
2646
2647 str = g_malloc(len + 1);
2648 memcpy(str, type, len);
2649 str[len] = '\0';
2650
2651 *key = str;
2652 return ++p;
2653 }
2654
2655 static int default_fmt_format = 'x';
2656 static int default_fmt_size = 4;
2657
2658 static int is_valid_option(const char *c, const char *typestr)
2659 {
2660 char option[3];
2661
2662 option[0] = '-';
2663 option[1] = *c;
2664 option[2] = '\0';
2665
2666 typestr = strstr(typestr, option);
2667 return (typestr != NULL);
2668 }
2669
2670 static const mon_cmd_t *search_dispatch_table(const mon_cmd_t *disp_table,
2671 const char *cmdname)
2672 {
2673 const mon_cmd_t *cmd;
2674
2675 for (cmd = disp_table; cmd->name != NULL; cmd++) {
2676 if (compare_cmd(cmdname, cmd->name)) {
2677 return cmd;
2678 }
2679 }
2680
2681 return NULL;
2682 }
2683
2684 /*
2685 * Parse command name from @cmdp according to command table @table.
2686 * If blank, return NULL.
2687 * Else, if no valid command can be found, report to @mon, and return
2688 * NULL.
2689 * Else, change @cmdp to point right behind the name, and return its
2690 * command table entry.
2691 * Do not assume the return value points into @table! It doesn't when
2692 * the command is found in a sub-command table.
2693 */
2694 static const mon_cmd_t *monitor_parse_command(Monitor *mon,
2695 const char *cmdp_start,
2696 const char **cmdp,
2697 mon_cmd_t *table)
2698 {
2699 const char *p;
2700 const mon_cmd_t *cmd;
2701 char cmdname[256];
2702
2703 /* extract the command name */
2704 p = get_command_name(*cmdp, cmdname, sizeof(cmdname));
2705 if (!p)
2706 return NULL;
2707
2708 cmd = search_dispatch_table(table, cmdname);
2709 if (!cmd) {
2710 monitor_printf(mon, "unknown command: '%.*s'\n",
2711 (int)(p - cmdp_start), cmdp_start);
2712 return NULL;
2713 }
2714
2715 /* filter out following useless space */
2716 while (qemu_isspace(*p)) {
2717 p++;
2718 }
2719
2720 *cmdp = p;
2721 /* search sub command */
2722 if (cmd->sub_table != NULL && *p != '\0') {
2723 return monitor_parse_command(mon, cmdp_start, cmdp, cmd->sub_table);
2724 }
2725
2726 return cmd;
2727 }
2728
2729 /*
2730 * Parse arguments for @cmd.
2731 * If it can't be parsed, report to @mon, and return NULL.
2732 * Else, insert command arguments into a QDict, and return it.
2733 * Note: On success, caller has to free the QDict structure.
2734 */
2735
2736 static QDict *monitor_parse_arguments(Monitor *mon,
2737 const char **endp,
2738 const mon_cmd_t *cmd)
2739 {
2740 const char *typestr;
2741 char *key;
2742 int c;
2743 const char *p = *endp;
2744 char buf[1024];
2745 QDict *qdict = qdict_new();
2746
2747 /* parse the parameters */
2748 typestr = cmd->args_type;
2749 for(;;) {
2750 typestr = key_get_info(typestr, &key);
2751 if (!typestr)
2752 break;
2753 c = *typestr;
2754 typestr++;
2755 switch(c) {
2756 case 'F':
2757 case 'B':
2758 case 's':
2759 {
2760 int ret;
2761
2762 while (qemu_isspace(*p))
2763 p++;
2764 if (*typestr == '?') {
2765 typestr++;
2766 if (*p == '\0') {
2767 /* no optional string: NULL argument */
2768 break;
2769 }
2770 }
2771 ret = get_str(buf, sizeof(buf), &p);
2772 if (ret < 0) {
2773 switch(c) {
2774 case 'F':
2775 monitor_printf(mon, "%s: filename expected\n",
2776 cmd->name);
2777 break;
2778 case 'B':
2779 monitor_printf(mon, "%s: block device name expected\n",
2780 cmd->name);
2781 break;
2782 default:
2783 monitor_printf(mon, "%s: string expected\n", cmd->name);
2784 break;
2785 }
2786 goto fail;
2787 }
2788 qdict_put_str(qdict, key, buf);
2789 }
2790 break;
2791 case 'O':
2792 {
2793 QemuOptsList *opts_list;
2794 QemuOpts *opts;
2795
2796 opts_list = qemu_find_opts(key);
2797 if (!opts_list || opts_list->desc->name) {
2798 goto bad_type;
2799 }
2800 while (qemu_isspace(*p)) {
2801 p++;
2802 }
2803 if (!*p)
2804 break;
2805 if (get_str(buf, sizeof(buf), &p) < 0) {
2806 goto fail;
2807 }
2808 opts = qemu_opts_parse_noisily(opts_list, buf, true);
2809 if (!opts) {
2810 goto fail;
2811 }
2812 qemu_opts_to_qdict(opts, qdict);
2813 qemu_opts_del(opts);
2814 }
2815 break;
2816 case '/':
2817 {
2818 int count, format, size;
2819
2820 while (qemu_isspace(*p))
2821 p++;
2822 if (*p == '/') {
2823 /* format found */
2824 p++;
2825 count = 1;
2826 if (qemu_isdigit(*p)) {
2827 count = 0;
2828 while (qemu_isdigit(*p)) {
2829 count = count * 10 + (*p - '0');
2830 p++;
2831 }
2832 }
2833 size = -1;
2834 format = -1;
2835 for(;;) {
2836 switch(*p) {
2837 case 'o':
2838 case 'd':
2839 case 'u':
2840 case 'x':
2841 case 'i':
2842 case 'c':
2843 format = *p++;
2844 break;
2845 case 'b':
2846 size = 1;
2847 p++;
2848 break;
2849 case 'h':
2850 size = 2;
2851 p++;
2852 break;
2853 case 'w':
2854 size = 4;
2855 p++;
2856 break;
2857 case 'g':
2858 case 'L':
2859 size = 8;
2860 p++;
2861 break;
2862 default:
2863 goto next;
2864 }
2865 }
2866 next:
2867 if (*p != '\0' && !qemu_isspace(*p)) {
2868 monitor_printf(mon, "invalid char in format: '%c'\n",
2869 *p);
2870 goto fail;
2871 }
2872 if (format < 0)
2873 format = default_fmt_format;
2874 if (format != 'i') {
2875 /* for 'i', not specifying a size gives -1 as size */
2876 if (size < 0)
2877 size = default_fmt_size;
2878 default_fmt_size = size;
2879 }
2880 default_fmt_format = format;
2881 } else {
2882 count = 1;
2883 format = default_fmt_format;
2884 if (format != 'i') {
2885 size = default_fmt_size;
2886 } else {
2887 size = -1;
2888 }
2889 }
2890 qdict_put_int(qdict, "count", count);
2891 qdict_put_int(qdict, "format", format);
2892 qdict_put_int(qdict, "size", size);
2893 }
2894 break;
2895 case 'i':
2896 case 'l':
2897 case 'M':
2898 {
2899 int64_t val;
2900
2901 while (qemu_isspace(*p))
2902 p++;
2903 if (*typestr == '?' || *typestr == '.') {
2904 if (*typestr == '?') {
2905 if (*p == '\0') {
2906 typestr++;
2907 break;
2908 }
2909 } else {
2910 if (*p == '.') {
2911 p++;
2912 while (qemu_isspace(*p))
2913 p++;
2914 } else {
2915 typestr++;
2916 break;
2917 }
2918 }
2919 typestr++;
2920 }
2921 if (get_expr(mon, &val, &p))
2922 goto fail;
2923 /* Check if 'i' is greater than 32-bit */
2924 if ((c == 'i') && ((val >> 32) & 0xffffffff)) {
2925 monitor_printf(mon, "\'%s\' has failed: ", cmd->name);
2926 monitor_printf(mon, "integer is for 32-bit values\n");
2927 goto fail;
2928 } else if (c == 'M') {
2929 if (val < 0) {
2930 monitor_printf(mon, "enter a positive value\n");
2931 goto fail;
2932 }
2933 val <<= 20;
2934 }
2935 qdict_put_int(qdict, key, val);
2936 }
2937 break;
2938 case 'o':
2939 {
2940 int ret;
2941 uint64_t val;
2942 char *end;
2943
2944 while (qemu_isspace(*p)) {
2945 p++;
2946 }
2947 if (*typestr == '?') {
2948 typestr++;
2949 if (*p == '\0') {
2950 break;
2951 }
2952 }
2953 ret = qemu_strtosz_MiB(p, &end, &val);
2954 if (ret < 0 || val > INT64_MAX) {
2955 monitor_printf(mon, "invalid size\n");
2956 goto fail;
2957 }
2958 qdict_put_int(qdict, key, val);
2959 p = end;
2960 }
2961 break;
2962 case 'T':
2963 {
2964 double val;
2965
2966 while (qemu_isspace(*p))
2967 p++;
2968 if (*typestr == '?') {
2969 typestr++;
2970 if (*p == '\0') {
2971 break;
2972 }
2973 }
2974 if (get_double(mon, &val, &p) < 0) {
2975 goto fail;
2976 }
2977 if (p[0] && p[1] == 's') {
2978 switch (*p) {
2979 case 'm':
2980 val /= 1e3; p += 2; break;
2981 case 'u':
2982 val /= 1e6; p += 2; break;
2983 case 'n':
2984 val /= 1e9; p += 2; break;
2985 }
2986 }
2987 if (*p && !qemu_isspace(*p)) {
2988 monitor_printf(mon, "Unknown unit suffix\n");
2989 goto fail;
2990 }
2991 qdict_put(qdict, key, qnum_from_double(val));
2992 }
2993 break;
2994 case 'b':
2995 {
2996 const char *beg;
2997 bool val;
2998
2999 while (qemu_isspace(*p)) {
3000 p++;
3001 }
3002 beg = p;
3003 while (qemu_isgraph(*p)) {
3004 p++;
3005 }
3006 if (p - beg == 2 && !memcmp(beg, "on", p - beg)) {
3007 val = true;
3008 } else if (p - beg == 3 && !memcmp(beg, "off", p - beg)) {
3009 val = false;
3010 } else {
3011 monitor_printf(mon, "Expected 'on' or 'off'\n");
3012 goto fail;
3013 }
3014 qdict_put_bool(qdict, key, val);
3015 }
3016 break;
3017 case '-':
3018 {
3019 const char *tmp = p;
3020 int skip_key = 0;
3021 /* option */
3022
3023 c = *typestr++;
3024 if (c == '\0')
3025 goto bad_type;
3026 while (qemu_isspace(*p))
3027 p++;
3028 if (*p == '-') {
3029 p++;
3030 if(c != *p) {
3031 if(!is_valid_option(p, typestr)) {
3032
3033 monitor_printf(mon, "%s: unsupported option -%c\n",
3034 cmd->name, *p);
3035 goto fail;
3036 } else {
3037 skip_key = 1;
3038 }
3039 }
3040 if(skip_key) {
3041 p = tmp;
3042 } else {
3043 /* has option */
3044 p++;
3045 qdict_put_bool(qdict, key, true);
3046 }
3047 }
3048 }
3049 break;
3050 case 'S':
3051 {
3052 /* package all remaining string */
3053 int len;
3054
3055 while (qemu_isspace(*p)) {
3056 p++;
3057 }
3058 if (*typestr == '?') {
3059 typestr++;
3060 if (*p == '\0') {
3061 /* no remaining string: NULL argument */
3062 break;
3063 }
3064 }
3065 len = strlen(p);
3066 if (len <= 0) {
3067 monitor_printf(mon, "%s: string expected\n",
3068 cmd->name);
3069 goto fail;
3070 }
3071 qdict_put_str(qdict, key, p);
3072 p += len;
3073 }
3074 break;
3075 default:
3076 bad_type:
3077 monitor_printf(mon, "%s: unknown type '%c'\n", cmd->name, c);
3078 goto fail;
3079 }
3080 g_free(key);
3081 key = NULL;
3082 }
3083 /* check that all arguments were parsed */
3084 while (qemu_isspace(*p))
3085 p++;
3086 if (*p != '\0') {
3087 monitor_printf(mon, "%s: extraneous characters at the end of line\n",
3088 cmd->name);
3089 goto fail;
3090 }
3091
3092 return qdict;
3093
3094 fail:
3095 QDECREF(qdict);
3096 g_free(key);
3097 return NULL;
3098 }
3099
3100 static void handle_hmp_command(Monitor *mon, const char *cmdline)
3101 {
3102 QDict *qdict;
3103 const mon_cmd_t *cmd;
3104
3105 trace_handle_hmp_command(mon, cmdline);
3106
3107 cmd = monitor_parse_command(mon, cmdline, &cmdline, mon->cmd_table);
3108 if (!cmd) {
3109 return;
3110 }
3111
3112 qdict = monitor_parse_arguments(mon, &cmdline, cmd);
3113 if (!qdict) {
3114 monitor_printf(mon, "Try \"help %s\" for more information\n",
3115 cmd->name);
3116 return;
3117 }
3118
3119 cmd->cmd(mon, qdict);
3120 QDECREF(qdict);
3121 }
3122
3123 static void cmd_completion(Monitor *mon, const char *name, const char *list)
3124 {
3125 const char *p, *pstart;
3126 char cmd[128];
3127 int len;
3128
3129 p = list;
3130 for(;;) {
3131 pstart = p;
3132 p = strchr(p, '|');
3133 if (!p)
3134 p = pstart + strlen(pstart);
3135 len = p - pstart;
3136 if (len > sizeof(cmd) - 2)
3137 len = sizeof(cmd) - 2;
3138 memcpy(cmd, pstart, len);
3139 cmd[len] = '\0';
3140 if (name[0] == '\0' || !strncmp(name, cmd, strlen(name))) {
3141 readline_add_completion(mon->rs, cmd);
3142 }
3143 if (*p == '\0')
3144 break;
3145 p++;
3146 }
3147 }
3148
3149 static void file_completion(Monitor *mon, const char *input)
3150 {
3151 DIR *ffs;
3152 struct dirent *d;
3153 char path[1024];
3154 char file[1024], file_prefix[1024];
3155 int input_path_len;
3156 const char *p;
3157
3158 p = strrchr(input, '/');
3159 if (!p) {
3160 input_path_len = 0;
3161 pstrcpy(file_prefix, sizeof(file_prefix), input);
3162 pstrcpy(path, sizeof(path), ".");
3163 } else {
3164 input_path_len = p - input + 1;
3165 memcpy(path, input, input_path_len);
3166 if (input_path_len > sizeof(path) - 1)
3167 input_path_len = sizeof(path) - 1;
3168 path[input_path_len] = '\0';
3169 pstrcpy(file_prefix, sizeof(file_prefix), p + 1);
3170 }
3171
3172 ffs = opendir(path);
3173 if (!ffs)
3174 return;
3175 for(;;) {
3176 struct stat sb;
3177 d = readdir(ffs);
3178 if (!d)
3179 break;
3180
3181 if (strcmp(d->d_name, ".") == 0 || strcmp(d->d_name, "..") == 0) {
3182 continue;
3183 }
3184
3185 if (strstart(d->d_name, file_prefix, NULL)) {
3186 memcpy(file, input, input_path_len);
3187 if (input_path_len < sizeof(file))
3188 pstrcpy(file + input_path_len, sizeof(file) - input_path_len,
3189 d->d_name);
3190 /* stat the file to find out if it's a directory.
3191 * In that case add a slash to speed up typing long paths
3192 */
3193 if (stat(file, &sb) == 0 && S_ISDIR(sb.st_mode)) {
3194 pstrcat(file, sizeof(file), "/");
3195 }
3196 readline_add_completion(mon->rs, file);
3197 }
3198 }
3199 closedir(ffs);
3200 }
3201
3202 static const char *next_arg_type(const char *typestr)
3203 {
3204 const char *p = strchr(typestr, ':');
3205 return (p != NULL ? ++p : typestr);
3206 }
3207
3208 static void add_completion_option(ReadLineState *rs, const char *str,
3209 const char *option)
3210 {
3211 if (!str || !option) {
3212 return;
3213 }
3214 if (!strncmp(option, str, strlen(str))) {
3215 readline_add_completion(rs, option);
3216 }
3217 }
3218
3219 void chardev_add_completion(ReadLineState *rs, int nb_args, const char *str)
3220 {
3221 size_t len;
3222 ChardevBackendInfoList *list, *start;
3223
3224 if (nb_args != 2) {
3225 return;
3226 }
3227 len = strlen(str);
3228 readline_set_completion_index(rs, len);
3229
3230 start = list = qmp_query_chardev_backends(NULL);
3231 while (list) {
3232 const char *chr_name = list->value->name;
3233
3234 if (!strncmp(chr_name, str, len)) {
3235 readline_add_completion(rs, chr_name);
3236 }
3237 list = list->next;
3238 }
3239 qapi_free_ChardevBackendInfoList(start);
3240 }
3241
3242 void netdev_add_completion(ReadLineState *rs, int nb_args, const char *str)
3243 {
3244 size_t len;
3245 int i;
3246
3247 if (nb_args != 2) {
3248 return;
3249 }
3250 len = strlen(str);
3251 readline_set_completion_index(rs, len);
3252 for (i = 0; i < NET_CLIENT_DRIVER__MAX; i++) {
3253 add_completion_option(rs, str, NetClientDriver_str(i));
3254 }
3255 }
3256
3257 void device_add_completion(ReadLineState *rs, int nb_args, const char *str)
3258 {
3259 GSList *list, *elt;
3260 size_t len;
3261
3262 if (nb_args != 2) {
3263 return;
3264 }
3265
3266 len = strlen(str);
3267 readline_set_completion_index(rs, len);
3268 list = elt = object_class_get_list(TYPE_DEVICE, false);
3269 while (elt) {
3270 const char *name;
3271 DeviceClass *dc = OBJECT_CLASS_CHECK(DeviceClass, elt->data,
3272 TYPE_DEVICE);
3273 name = object_class_get_name(OBJECT_CLASS(dc));
3274
3275 if (dc->user_creatable
3276 && !strncmp(name, str, len)) {
3277 readline_add_completion(rs, name);
3278 }
3279 elt = elt->next;
3280 }
3281 g_slist_free(list);
3282 }
3283
3284 void object_add_completion(ReadLineState *rs, int nb_args, const char *str)
3285 {
3286 GSList *list, *elt;
3287 size_t len;
3288
3289 if (nb_args != 2) {
3290 return;
3291 }
3292
3293 len = strlen(str);
3294 readline_set_completion_index(rs, len);
3295 list = elt = object_class_get_list(TYPE_USER_CREATABLE, false);
3296 while (elt) {
3297 const char *name;
3298
3299 name = object_class_get_name(OBJECT_CLASS(elt->data));
3300 if (!strncmp(name, str, len) && strcmp(name, TYPE_USER_CREATABLE)) {
3301 readline_add_completion(rs, name);
3302 }
3303 elt = elt->next;
3304 }
3305 g_slist_free(list);
3306 }
3307
3308 static void peripheral_device_del_completion(ReadLineState *rs,
3309 const char *str, size_t len)
3310 {
3311 Object *peripheral = container_get(qdev_get_machine(), "/peripheral");
3312 GSList *list, *item;
3313
3314 list = qdev_build_hotpluggable_device_list(peripheral);
3315 if (!list) {
3316 return;
3317 }
3318
3319 for (item = list; item; item = g_slist_next(item)) {
3320 DeviceState *dev = item->data;
3321
3322 if (dev->id && !strncmp(str, dev->id, len)) {
3323 readline_add_completion(rs, dev->id);
3324 }
3325 }
3326
3327 g_slist_free(list);
3328 }
3329
3330 void chardev_remove_completion(ReadLineState *rs, int nb_args, const char *str)
3331 {
3332 size_t len;
3333 ChardevInfoList *list, *start;
3334
3335 if (nb_args != 2) {
3336 return;
3337 }
3338 len = strlen(str);
3339 readline_set_completion_index(rs, len);
3340
3341 start = list = qmp_query_chardev(NULL);
3342 while (list) {
3343 ChardevInfo *chr = list->value;
3344
3345 if (!strncmp(chr->label, str, len)) {
3346 readline_add_completion(rs, chr->label);
3347 }
3348 list = list->next;
3349 }
3350 qapi_free_ChardevInfoList(start);
3351 }
3352
3353 static void ringbuf_completion(ReadLineState *rs, const char *str)
3354 {
3355 size_t len;
3356 ChardevInfoList *list, *start;
3357
3358 len = strlen(str);
3359 readline_set_completion_index(rs, len);
3360
3361 start = list = qmp_query_chardev(NULL);
3362 while (list) {
3363 ChardevInfo *chr_info = list->value;
3364
3365 if (!strncmp(chr_info->label, str, len)) {
3366 Chardev *chr = qemu_chr_find(chr_info->label);
3367 if (chr && CHARDEV_IS_RINGBUF(chr)) {
3368 readline_add_completion(rs, chr_info->label);
3369 }
3370 }
3371 list = list->next;
3372 }
3373 qapi_free_ChardevInfoList(start);
3374 }
3375
3376 void ringbuf_write_completion(ReadLineState *rs, int nb_args, const char *str)
3377 {
3378 if (nb_args != 2) {
3379 return;
3380 }
3381 ringbuf_completion(rs, str);
3382 }
3383
3384 void device_del_completion(ReadLineState *rs, int nb_args, const char *str)
3385 {
3386 size_t len;
3387
3388 if (nb_args != 2) {
3389 return;
3390 }
3391
3392 len = strlen(str);
3393 readline_set_completion_index(rs, len);
3394 peripheral_device_del_completion(rs, str, len);
3395 }
3396
3397 void object_del_completion(ReadLineState *rs, int nb_args, const char *str)
3398 {
3399 ObjectPropertyInfoList *list, *start;
3400 size_t len;
3401
3402 if (nb_args != 2) {
3403 return;
3404 }
3405 len = strlen(str);
3406 readline_set_completion_index(rs, len);
3407
3408 start = list = qmp_qom_list("/objects", NULL);
3409 while (list) {
3410 ObjectPropertyInfo *info = list->value;
3411
3412 if (!strncmp(info->type, "child<", 5)
3413 && !strncmp(info->name, str, len)) {
3414 readline_add_completion(rs, info->name);
3415 }
3416 list = list->next;
3417 }
3418 qapi_free_ObjectPropertyInfoList(start);
3419 }
3420
3421 void sendkey_completion(ReadLineState *rs, int nb_args, const char *str)
3422 {
3423 int i;
3424 char *sep;
3425 size_t len;
3426
3427 if (nb_args != 2) {
3428 return;
3429 }
3430 sep = strrchr(str, '-');
3431 if (sep) {
3432 str = sep + 1;
3433 }
3434 len = strlen(str);
3435 readline_set_completion_index(rs, len);
3436 for (i = 0; i < Q_KEY_CODE__MAX; i++) {
3437 if (!strncmp(str, QKeyCode_str(i), len)) {
3438 readline_add_completion(rs, QKeyCode_str(i));
3439 }
3440 }
3441 }
3442
3443 void set_link_completion(ReadLineState *rs, int nb_args, const char *str)
3444 {
3445 size_t len;
3446
3447 len = strlen(str);
3448 readline_set_completion_index(rs, len);
3449 if (nb_args == 2) {
3450 NetClientState *ncs[MAX_QUEUE_NUM];
3451 int count, i;
3452 count = qemu_find_net_clients_except(NULL, ncs,
3453 NET_CLIENT_DRIVER_NONE,
3454 MAX_QUEUE_NUM);
3455 for (i = 0; i < MIN(count, MAX_QUEUE_NUM); i++) {
3456 const char *name = ncs[i]->name;
3457 if (!strncmp(str, name, len)) {
3458 readline_add_completion(rs, name);
3459 }
3460 }
3461 } else if (nb_args == 3) {
3462 add_completion_option(rs, str, "on");
3463 add_completion_option(rs, str, "off");
3464 }
3465 }
3466
3467 void netdev_del_completion(ReadLineState *rs, int nb_args, const char *str)
3468 {
3469 int len, count, i;
3470 NetClientState *ncs[MAX_QUEUE_NUM];
3471
3472 if (nb_args != 2) {
3473 return;
3474 }
3475
3476 len = strlen(str);
3477 readline_set_completion_index(rs, len);
3478 count = qemu_find_net_clients_except(NULL, ncs, NET_CLIENT_DRIVER_NIC,
3479 MAX_QUEUE_NUM);
3480 for (i = 0; i < MIN(count, MAX_QUEUE_NUM); i++) {
3481 QemuOpts *opts;
3482 const char *name = ncs[i]->name;
3483 if (strncmp(str, name, len)) {
3484 continue;
3485 }
3486 opts = qemu_opts_find(qemu_find_opts_err("netdev", NULL), name);
3487 if (opts) {
3488 readline_add_completion(rs, name);
3489 }
3490 }
3491 }
3492
3493 void info_trace_events_completion(ReadLineState *rs, int nb_args, const char *str)
3494 {
3495 size_t len;
3496
3497 len = strlen(str);
3498 readline_set_completion_index(rs, len);
3499 if (nb_args == 2) {
3500 TraceEventIter iter;
3501 TraceEvent *ev;
3502 char *pattern = g_strdup_printf("%s*", str);
3503 trace_event_iter_init(&iter, pattern);
3504 while ((ev = trace_event_iter_next(&iter)) != NULL) {
3505 readline_add_completion(rs, trace_event_get_name(ev));
3506 }
3507 g_free(pattern);
3508 }
3509 }
3510
3511 void trace_event_completion(ReadLineState *rs, int nb_args, const char *str)
3512 {
3513 size_t len;
3514
3515 len = strlen(str);
3516 readline_set_completion_index(rs, len);
3517 if (nb_args == 2) {
3518 TraceEventIter iter;
3519 TraceEvent *ev;
3520 char *pattern = g_strdup_printf("%s*", str);
3521 trace_event_iter_init(&iter, pattern);
3522 while ((ev = trace_event_iter_next(&iter)) != NULL) {
3523 readline_add_completion(rs, trace_event_get_name(ev));
3524 }
3525 g_free(pattern);
3526 } else if (nb_args == 3) {
3527 add_completion_option(rs, str, "on");
3528 add_completion_option(rs, str, "off");
3529 }
3530 }
3531
3532 void watchdog_action_completion(ReadLineState *rs, int nb_args, const char *str)
3533 {
3534 int i;
3535
3536 if (nb_args != 2) {
3537 return;
3538 }
3539 readline_set_completion_index(rs, strlen(str));
3540 for (i = 0; i < WATCHDOG_ACTION__MAX; i++) {
3541 add_completion_option(rs, str, WatchdogAction_str(i));
3542 }
3543 }
3544
3545 void migrate_set_capability_completion(ReadLineState *rs, int nb_args,
3546 const char *str)
3547 {
3548 size_t len;
3549
3550 len = strlen(str);
3551 readline_set_completion_index(rs, len);
3552 if (nb_args == 2) {
3553 int i;
3554 for (i = 0; i < MIGRATION_CAPABILITY__MAX; i++) {
3555 const char *name = MigrationCapability_str(i);
3556 if (!strncmp(str, name, len)) {
3557 readline_add_completion(rs, name);
3558 }
3559 }
3560 } else if (nb_args == 3) {
3561 add_completion_option(rs, str, "on");
3562 add_completion_option(rs, str, "off");
3563 }
3564 }
3565
3566 void migrate_set_parameter_completion(ReadLineState *rs, int nb_args,
3567 const char *str)
3568 {
3569 size_t len;
3570
3571 len = strlen(str);
3572 readline_set_completion_index(rs, len);
3573 if (nb_args == 2) {
3574 int i;
3575 for (i = 0; i < MIGRATION_PARAMETER__MAX; i++) {
3576 const char *name = MigrationParameter_str(i);
3577 if (!strncmp(str, name, len)) {
3578 readline_add_completion(rs, name);
3579 }
3580 }
3581 }
3582 }
3583
3584 static void vm_completion(ReadLineState *rs, const char *str)
3585 {
3586 size_t len;
3587 BlockDriverState *bs;
3588 BdrvNextIterator it;
3589
3590 len = strlen(str);
3591 readline_set_completion_index(rs, len);
3592
3593 for (bs = bdrv_first(&it); bs; bs = bdrv_next(&it)) {
3594 SnapshotInfoList *snapshots, *snapshot;
3595 AioContext *ctx = bdrv_get_aio_context(bs);
3596 bool ok = false;
3597
3598 aio_context_acquire(ctx);
3599 if (bdrv_can_snapshot(bs)) {
3600 ok = bdrv_query_snapshot_info_list(bs, &snapshots, NULL) == 0;
3601 }
3602 aio_context_release(ctx);
3603 if (!ok) {
3604 continue;
3605 }
3606
3607 snapshot = snapshots;
3608 while (snapshot) {
3609 char *completion = snapshot->value->name;
3610 if (!strncmp(str, completion, len)) {
3611 readline_add_completion(rs, completion);
3612 }
3613 completion = snapshot->value->id;
3614 if (!strncmp(str, completion, len)) {
3615 readline_add_completion(rs, completion);
3616 }
3617 snapshot = snapshot->next;
3618 }
3619 qapi_free_SnapshotInfoList(snapshots);
3620 }
3621
3622 }
3623
3624 void delvm_completion(ReadLineState *rs, int nb_args, const char *str)
3625 {
3626 if (nb_args == 2) {
3627 vm_completion(rs, str);
3628 }
3629 }
3630
3631 void loadvm_completion(ReadLineState *rs, int nb_args, const char *str)
3632 {
3633 if (nb_args == 2) {
3634 vm_completion(rs, str);
3635 }
3636 }
3637
3638 static void monitor_find_completion_by_table(Monitor *mon,
3639 const mon_cmd_t *cmd_table,
3640 char **args,
3641 int nb_args)
3642 {
3643 const char *cmdname;
3644 int i;
3645 const char *ptype, *old_ptype, *str, *name;
3646 const mon_cmd_t *cmd;
3647 BlockBackend *blk = NULL;
3648
3649 if (nb_args <= 1) {
3650 /* command completion */
3651 if (nb_args == 0)
3652 cmdname = "";
3653 else
3654 cmdname = args[0];
3655 readline_set_completion_index(mon->rs, strlen(cmdname));
3656 for (cmd = cmd_table; cmd->name != NULL; cmd++) {
3657 cmd_completion(mon, cmdname, cmd->name);
3658 }
3659 } else {
3660 /* find the command */
3661 for (cmd = cmd_table; cmd->name != NULL; cmd++) {
3662 if (compare_cmd(args[0], cmd->name)) {
3663 break;
3664 }
3665 }
3666 if (!cmd->name) {
3667 return;
3668 }
3669
3670 if (cmd->sub_table) {
3671 /* do the job again */
3672 monitor_find_completion_by_table(mon, cmd->sub_table,
3673 &args[1], nb_args - 1);
3674 return;
3675 }
3676 if (cmd->command_completion) {
3677 cmd->command_completion(mon->rs, nb_args, args[nb_args - 1]);
3678 return;
3679 }
3680
3681 ptype = next_arg_type(cmd->args_type);
3682 for(i = 0; i < nb_args - 2; i++) {
3683 if (*ptype != '\0') {
3684 ptype = next_arg_type(ptype);
3685 while (*ptype == '?')
3686 ptype = next_arg_type(ptype);
3687 }
3688 }
3689 str = args[nb_args - 1];
3690 old_ptype = NULL;
3691 while (*ptype == '-' && old_ptype != ptype) {
3692 old_ptype = ptype;
3693 ptype = next_arg_type(ptype);
3694 }
3695 switch(*ptype) {
3696 case 'F':
3697 /* file completion */
3698 readline_set_completion_index(mon->rs, strlen(str));
3699 file_completion(mon, str);
3700 break;
3701 case 'B':
3702 /* block device name completion */
3703 readline_set_completion_index(mon->rs, strlen(str));
3704 while ((blk = blk_next(blk)) != NULL) {
3705 name = blk_name(blk);
3706 if (str[0] == '\0' ||
3707 !strncmp(name, str, strlen(str))) {
3708 readline_add_completion(mon->rs, name);
3709 }
3710 }
3711 break;
3712 case 's':
3713 case 'S':
3714 if (!strcmp(cmd->name, "help|?")) {
3715 monitor_find_completion_by_table(mon, cmd_table,
3716 &args[1], nb_args - 1);
3717 }
3718 break;
3719 default:
3720 break;
3721 }
3722 }
3723 }
3724
3725 static void monitor_find_completion(void *opaque,
3726 const char *cmdline)
3727 {
3728 Monitor *mon = opaque;
3729 char *args[MAX_ARGS];
3730 int nb_args, len;
3731
3732 /* 1. parse the cmdline */
3733 if (parse_cmdline(cmdline, &nb_args, args) < 0) {
3734 return;
3735 }
3736
3737 /* if the line ends with a space, it means we want to complete the
3738 next arg */
3739 len = strlen(cmdline);
3740 if (len > 0 && qemu_isspace(cmdline[len - 1])) {
3741 if (nb_args >= MAX_ARGS) {
3742 goto cleanup;
3743 }
3744 args[nb_args++] = g_strdup("");
3745 }
3746
3747 /* 2. auto complete according to args */
3748 monitor_find_completion_by_table(mon, mon->cmd_table, args, nb_args);
3749
3750 cleanup:
3751 free_cmdline_args(args, nb_args);
3752 }
3753
3754 static int monitor_can_read(void *opaque)
3755 {
3756 Monitor *mon = opaque;
3757
3758 return (mon->suspend_cnt == 0) ? 1 : 0;
3759 }
3760
3761 static void handle_qmp_command(JSONMessageParser *parser, GQueue *tokens)
3762 {
3763 QObject *req, *rsp = NULL, *id = NULL;
3764 QDict *qdict = NULL;
3765 Monitor *mon = cur_mon;
3766 Error *err = NULL;
3767
3768 req = json_parser_parse_err(tokens, NULL, &err);
3769 if (!req && !err) {
3770 /* json_parser_parse_err() sucks: can fail without setting @err */
3771 error_setg(&err, QERR_JSON_PARSING);
3772 }
3773 if (err) {
3774 goto err_out;
3775 }
3776
3777 qdict = qobject_to_qdict(req);
3778 if (qdict) {
3779 id = qdict_get(qdict, "id");
3780 qobject_incref(id);
3781 qdict_del(qdict, "id");
3782 } /* else will fail qmp_dispatch() */
3783
3784 if (trace_event_get_state_backends(TRACE_HANDLE_QMP_COMMAND)) {
3785 QString *req_json = qobject_to_json(req);
3786 trace_handle_qmp_command(mon, qstring_get_str(req_json));
3787 QDECREF(req_json);
3788 }
3789
3790 rsp = qmp_dispatch(cur_mon->qmp.commands, req);
3791
3792 if (mon->qmp.commands == &qmp_cap_negotiation_commands) {
3793 qdict = qdict_get_qdict(qobject_to_qdict(rsp), "error");
3794 if (qdict
3795 && !g_strcmp0(qdict_get_try_str(qdict, "class"),
3796 QapiErrorClass_str(ERROR_CLASS_COMMAND_NOT_FOUND))) {
3797 /* Provide a more useful error message */
3798 qdict_del(qdict, "desc");
3799 qdict_put_str(qdict, "desc", "Expecting capabilities negotiation"
3800 " with 'qmp_capabilities'");
3801 }
3802 }
3803
3804 err_out:
3805 if (err) {
3806 qdict = qdict_new();
3807 qdict_put_obj(qdict, "error", qmp_build_error_object(err));
3808 error_free(err);
3809 rsp = QOBJECT(qdict);
3810 }
3811
3812 if (rsp) {
3813 if (id) {
3814 qdict_put_obj(qobject_to_qdict(rsp), "id", id);
3815 id = NULL;
3816 }
3817
3818 monitor_json_emitter(mon, rsp);
3819 }
3820
3821 qobject_decref(id);
3822 qobject_decref(rsp);
3823 qobject_decref(req);
3824 }
3825
3826 static void monitor_qmp_read(void *opaque, const uint8_t *buf, int size)
3827 {
3828 Monitor *old_mon = cur_mon;
3829
3830 cur_mon = opaque;
3831
3832 json_message_parser_feed(&cur_mon->qmp.parser, (const char *) buf, size);
3833
3834 cur_mon = old_mon;
3835 }
3836
3837 static void monitor_read(void *opaque, const uint8_t *buf, int size)
3838 {
3839 Monitor *old_mon = cur_mon;
3840 int i;
3841
3842 cur_mon = opaque;
3843
3844 if (cur_mon->rs) {
3845 for (i = 0; i < size; i++)
3846 readline_handle_byte(cur_mon->rs, buf[i]);
3847 } else {
3848 if (size == 0 || buf[size - 1] != 0)
3849 monitor_printf(cur_mon, "corrupted command\n");
3850 else
3851 handle_hmp_command(cur_mon, (char *)buf);
3852 }
3853
3854 cur_mon = old_mon;
3855 }
3856
3857 static void monitor_command_cb(void *opaque, const char *cmdline,
3858 void *readline_opaque)
3859 {
3860 Monitor *mon = opaque;
3861
3862 monitor_suspend(mon);
3863 handle_hmp_command(mon, cmdline);
3864 monitor_resume(mon);
3865 }
3866
3867 int monitor_suspend(Monitor *mon)
3868 {
3869 if (!mon->rs)
3870 return -ENOTTY;
3871 mon->suspend_cnt++;
3872 return 0;
3873 }
3874
3875 void monitor_resume(Monitor *mon)
3876 {
3877 if (!mon->rs)
3878 return;
3879 if (--mon->suspend_cnt == 0)
3880 readline_show_prompt(mon->rs);
3881 }
3882
3883 static QObject *get_qmp_greeting(void)
3884 {
3885 QObject *ver = NULL;
3886
3887 qmp_marshal_query_version(NULL, &ver, NULL);
3888
3889 return qobject_from_jsonf("{'QMP': {'version': %p, 'capabilities': []}}",
3890 ver);
3891 }
3892
3893 static void monitor_qmp_event(void *opaque, int event)
3894 {
3895 QObject *data;
3896 Monitor *mon = opaque;
3897
3898 switch (event) {
3899 case CHR_EVENT_OPENED:
3900 mon->qmp.commands = &qmp_cap_negotiation_commands;
3901 data = get_qmp_greeting();
3902 monitor_json_emitter(mon, data);
3903 qobject_decref(data);
3904 mon_refcount++;
3905 break;
3906 case CHR_EVENT_CLOSED:
3907 json_message_parser_destroy(&mon->qmp.parser);
3908 json_message_parser_init(&mon->qmp.parser, handle_qmp_command);
3909 mon_refcount--;
3910 monitor_fdsets_cleanup();
3911 break;
3912 }
3913 }
3914
3915 static void monitor_event(void *opaque, int event)
3916 {
3917 Monitor *mon = opaque;
3918
3919 switch (event) {
3920 case CHR_EVENT_MUX_IN:
3921 qemu_mutex_lock(&mon->out_lock);
3922 mon->mux_out = 0;
3923 qemu_mutex_unlock(&mon->out_lock);
3924 if (mon->reset_seen) {
3925 readline_restart(mon->rs);
3926 monitor_resume(mon);
3927 monitor_flush(mon);
3928 } else {
3929 mon->suspend_cnt = 0;
3930 }
3931 break;
3932
3933 case CHR_EVENT_MUX_OUT:
3934 if (mon->reset_seen) {
3935 if (mon->suspend_cnt == 0) {
3936 monitor_printf(mon, "\n");
3937 }
3938 monitor_flush(mon);
3939 monitor_suspend(mon);
3940 } else {
3941 mon->suspend_cnt++;
3942 }
3943 qemu_mutex_lock(&mon->out_lock);
3944 mon->mux_out = 1;
3945 qemu_mutex_unlock(&mon->out_lock);
3946 break;
3947
3948 case CHR_EVENT_OPENED:
3949 monitor_printf(mon, "QEMU %s monitor - type 'help' for more "
3950 "information\n", QEMU_VERSION);
3951 if (!mon->mux_out) {
3952 readline_restart(mon->rs);
3953 readline_show_prompt(mon->rs);
3954 }
3955 mon->reset_seen = 1;
3956 mon_refcount++;
3957 break;
3958
3959 case CHR_EVENT_CLOSED:
3960 mon_refcount--;
3961 monitor_fdsets_cleanup();
3962 break;
3963 }
3964 }
3965
3966 static int
3967 compare_mon_cmd(const void *a, const void *b)
3968 {
3969 return strcmp(((const mon_cmd_t *)a)->name,
3970 ((const mon_cmd_t *)b)->name);
3971 }
3972
3973 static void sortcmdlist(void)
3974 {
3975 int array_num;
3976 int elem_size = sizeof(mon_cmd_t);
3977
3978 array_num = sizeof(mon_cmds)/elem_size-1;
3979 qsort((void *)mon_cmds, array_num, elem_size, compare_mon_cmd);
3980
3981 array_num = sizeof(info_cmds)/elem_size-1;
3982 qsort((void *)info_cmds, array_num, elem_size, compare_mon_cmd);
3983 }
3984
3985 /* These functions just adapt the readline interface in a typesafe way. We
3986 * could cast function pointers but that discards compiler checks.
3987 */
3988 static void GCC_FMT_ATTR(2, 3) monitor_readline_printf(void *opaque,
3989 const char *fmt, ...)
3990 {
3991 va_list ap;
3992 va_start(ap, fmt);
3993 monitor_vprintf(opaque, fmt, ap);
3994 va_end(ap);
3995 }
3996
3997 static void monitor_readline_flush(void *opaque)
3998 {
3999 monitor_flush(opaque);
4000 }
4001
4002 /*
4003 * Print to current monitor if we have one, else to stderr.
4004 * TODO should return int, so callers can calculate width, but that
4005 * requires surgery to monitor_vprintf(). Left for another day.
4006 */
4007 void error_vprintf(const char *fmt, va_list ap)
4008 {
4009 if (cur_mon && !monitor_cur_is_qmp()) {
4010 monitor_vprintf(cur_mon, fmt, ap);
4011 } else {
4012 vfprintf(stderr, fmt, ap);
4013 }
4014 }
4015
4016 void error_vprintf_unless_qmp(const char *fmt, va_list ap)
4017 {
4018 if (cur_mon && !monitor_cur_is_qmp()) {
4019 monitor_vprintf(cur_mon, fmt, ap);
4020 } else if (!cur_mon) {
4021 vfprintf(stderr, fmt, ap);
4022 }
4023 }
4024
4025 static void __attribute__((constructor)) monitor_lock_init(void)
4026 {
4027 qemu_mutex_init(&monitor_lock);
4028 }
4029
4030 void monitor_init(Chardev *chr, int flags)
4031 {
4032 static int is_first_init = 1;
4033 Monitor *mon;
4034
4035 if (is_first_init) {
4036 monitor_qapi_event_init();
4037 sortcmdlist();
4038 is_first_init = 0;
4039 }
4040
4041 mon = g_malloc(sizeof(*mon));
4042 monitor_data_init(mon);
4043
4044 qemu_chr_fe_init(&mon->chr, chr, &error_abort);
4045 mon->flags = flags;
4046 if (flags & MONITOR_USE_READLINE) {
4047 mon->rs = readline_init(monitor_readline_printf,
4048 monitor_readline_flush,
4049 mon,
4050 monitor_find_completion);
4051 monitor_read_command(mon, 0);
4052 }
4053
4054 if (monitor_is_qmp(mon)) {
4055 qemu_chr_fe_set_handlers(&mon->chr, monitor_can_read, monitor_qmp_read,
4056 monitor_qmp_event, NULL, mon, NULL, true);
4057 qemu_chr_fe_set_echo(&mon->chr, true);
4058 json_message_parser_init(&mon->qmp.parser, handle_qmp_command);
4059 } else {
4060 qemu_chr_fe_set_handlers(&mon->chr, monitor_can_read, monitor_read,
4061 monitor_event, NULL, mon, NULL, true);
4062 }
4063
4064 qemu_mutex_lock(&monitor_lock);
4065 QLIST_INSERT_HEAD(&mon_list, mon, entry);
4066 qemu_mutex_unlock(&monitor_lock);
4067 }
4068
4069 void monitor_cleanup(void)
4070 {
4071 Monitor *mon, *next;
4072
4073 qemu_mutex_lock(&monitor_lock);
4074 QLIST_FOREACH_SAFE(mon, &mon_list, entry, next) {
4075 QLIST_REMOVE(mon, entry);
4076 monitor_data_destroy(mon);
4077 g_free(mon);
4078 }
4079 qemu_mutex_unlock(&monitor_lock);
4080 }
4081
4082 QemuOptsList qemu_mon_opts = {
4083 .name = "mon",
4084 .implied_opt_name = "chardev",
4085 .head = QTAILQ_HEAD_INITIALIZER(qemu_mon_opts.head),
4086 .desc = {
4087 {
4088 .name = "mode",
4089 .type = QEMU_OPT_STRING,
4090 },{
4091 .name = "chardev",
4092 .type = QEMU_OPT_STRING,
4093 },{
4094 .name = "pretty",
4095 .type = QEMU_OPT_BOOL,
4096 },
4097 { /* end of list */ }
4098 },
4099 };
4100
4101 #ifndef TARGET_I386
4102 void qmp_rtc_reset_reinjection(Error **errp)
4103 {
4104 error_setg(errp, QERR_FEATURE_DISABLED, "rtc-reset-reinjection");
4105 }
4106 #endif
4107
4108 #ifndef TARGET_S390X
4109 void qmp_dump_skeys(const char *filename, Error **errp)
4110 {
4111 error_setg(errp, QERR_FEATURE_DISABLED, "dump-skeys");
4112 }
4113 #endif
4114
4115 #ifndef TARGET_ARM
4116 GICCapabilityList *qmp_query_gic_capabilities(Error **errp)
4117 {
4118 error_setg(errp, QERR_FEATURE_DISABLED, "query-gic-capabilities");
4119 return NULL;
4120 }
4121 #endif
4122
4123 HotpluggableCPUList *qmp_query_hotpluggable_cpus(Error **errp)
4124 {
4125 MachineState *ms = MACHINE(qdev_get_machine());
4126 MachineClass *mc = MACHINE_GET_CLASS(ms);
4127
4128 if (!mc->has_hotpluggable_cpus) {
4129 error_setg(errp, QERR_FEATURE_DISABLED, "query-hotpluggable-cpus");
4130 return NULL;
4131 }
4132
4133 return machine_query_hotpluggable_cpus(ms);
4134 }
AR7 emulation for QEMU