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trace: split out trace events for hw/vfio/ directory
[qemu/kevin.git] / monitor.c
bloba5d054b03960aac235e930b35aeaf3d6b0858212
1 /*
2 * QEMU monitor
3 *
4 * Copyright (c) 2003-2004 Fabrice Bellard
5 *
6 * Permission is hereby granted, free of charge, to any person obtaining a copy
7 * of this software and associated documentation files (the "Software"), to deal
8 * in the Software without restriction, including without limitation the rights
9 * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
10 * copies of the Software, and to permit persons to whom the Software is
11 * furnished to do so, subject to the following conditions:
12 *
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
15 *
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
17 * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
20 * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
21 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
22 * THE SOFTWARE.
23 */
24 #include "qemu/osdep.h"
25 #include <dirent.h>
26 #include "qemu-common.h"
27 #include "cpu.h"
28 #include "hw/hw.h"
29 #include "monitor/qdev.h"
30 #include "hw/usb.h"
31 #include "hw/i386/pc.h"
32 #include "hw/pci/pci.h"
33 #include "sysemu/watchdog.h"
34 #include "hw/loader.h"
35 #include "exec/gdbstub.h"
36 #include "net/net.h"
37 #include "net/slirp.h"
38 #include "sysemu/char.h"
39 #include "ui/qemu-spice.h"
40 #include "sysemu/sysemu.h"
41 #include "sysemu/numa.h"
42 #include "monitor/monitor.h"
43 #include "qemu/readline.h"
44 #include "ui/console.h"
45 #include "ui/input.h"
46 #include "sysemu/blockdev.h"
47 #include "sysemu/block-backend.h"
48 #include "audio/audio.h"
49 #include "disas/disas.h"
50 #include "sysemu/balloon.h"
51 #include "qemu/timer.h"
52 #include "migration/migration.h"
53 #include "sysemu/kvm.h"
54 #include "qemu/acl.h"
55 #include "sysemu/tpm.h"
56 #include "qapi/qmp/qerror.h"
57 #include "qapi/qmp/qint.h"
58 #include "qapi/qmp/qfloat.h"
59 #include "qapi/qmp/qlist.h"
60 #include "qapi/qmp/qbool.h"
61 #include "qapi/qmp/qstring.h"
62 #include "qapi/qmp/qjson.h"
63 #include "qapi/qmp/json-streamer.h"
64 #include "qapi/qmp/json-parser.h"
65 #include <qom/object_interfaces.h>
66 #include "cpu.h"
67 #include "trace.h"
68 #include "trace/control.h"
69 #include "monitor/hmp-target.h"
70 #ifdef CONFIG_TRACE_SIMPLE
71 #include "trace/simple.h"
72 #endif
73 #include "exec/memory.h"
74 #include "exec/exec-all.h"
75 #include "qemu/log.h"
76 #include "qmp-commands.h"
77 #include "hmp.h"
78 #include "qemu/thread.h"
79 #include "block/qapi.h"
80 #include "qapi/qmp-event.h"
81 #include "qapi-event.h"
82 #include "qmp-introspect.h"
83 #include "sysemu/block-backend.h"
84 #include "sysemu/qtest.h"
85 #include "qemu/cutils.h"
86
87 /* for hmp_info_irq/pic */
88 #if defined(TARGET_SPARC)
89 #include "hw/sparc/sun4m.h"
90 #endif
91 #include "hw/lm32/lm32_pic.h"
92
93 #if defined(TARGET_S390X)
94 #include "hw/s390x/storage-keys.h"
95 #endif
96
97 /*
98 * Supported types:
99 *
100 * 'F' filename
101 * 'B' block device name
102 * 's' string (accept optional quote)
103 * 'S' it just appends the rest of the string (accept optional quote)
104 * 'O' option string of the form NAME=VALUE,...
105 * parsed according to QemuOptsList given by its name
106 * Example: 'device:O' uses qemu_device_opts.
107 * Restriction: only lists with empty desc are supported
108 * TODO lift the restriction
109 * 'i' 32 bit integer
110 * 'l' target long (32 or 64 bit)
111 * 'M' Non-negative target long (32 or 64 bit), in user mode the
112 * value is multiplied by 2^20 (think Mebibyte)
113 * 'o' octets (aka bytes)
114 * user mode accepts an optional E, e, P, p, T, t, G, g, M, m,
115 * K, k suffix, which multiplies the value by 2^60 for suffixes E
116 * and e, 2^50 for suffixes P and p, 2^40 for suffixes T and t,
117 * 2^30 for suffixes G and g, 2^20 for M and m, 2^10 for K and k
118 * 'T' double
119 * user mode accepts an optional ms, us, ns suffix,
120 * which divides the value by 1e3, 1e6, 1e9, respectively
121 * '/' optional gdb-like print format (like "/10x")
122 *
123 * '?' optional type (for all types, except '/')
124 * '.' other form of optional type (for 'i' and 'l')
125 * 'b' boolean
126 * user mode accepts "on" or "off"
127 * '-' optional parameter (eg. '-f')
128 *
129 */
130
131 typedef struct mon_cmd_t {
132 const char *name;
133 const char *args_type;
134 const char *params;
135 const char *help;
136 union {
137 void (*cmd)(Monitor *mon, const QDict *qdict);
138 void (*cmd_new)(QDict *params, QObject **ret_data, Error **errp);
139 } mhandler;
140 /* @sub_table is a list of 2nd level of commands. If it do not exist,
141 * mhandler should be used. If it exist, sub_table[?].mhandler should be
142 * used, and mhandler of 1st level plays the role of help function.
143 */
144 struct mon_cmd_t *sub_table;
145 void (*command_completion)(ReadLineState *rs, int nb_args, const char *str);
146 } mon_cmd_t;
147
148 /* file descriptors passed via SCM_RIGHTS */
149 typedef struct mon_fd_t mon_fd_t;
150 struct mon_fd_t {
151 char *name;
152 int fd;
153 QLIST_ENTRY(mon_fd_t) next;
154 };
155
156 /* file descriptor associated with a file descriptor set */
157 typedef struct MonFdsetFd MonFdsetFd;
158 struct MonFdsetFd {
159 int fd;
160 bool removed;
161 char *opaque;
162 QLIST_ENTRY(MonFdsetFd) next;
163 };
164
165 /* file descriptor set containing fds passed via SCM_RIGHTS */
166 typedef struct MonFdset MonFdset;
167 struct MonFdset {
168 int64_t id;
169 QLIST_HEAD(, MonFdsetFd) fds;
170 QLIST_HEAD(, MonFdsetFd) dup_fds;
171 QLIST_ENTRY(MonFdset) next;
172 };
173
174 typedef struct {
175 QObject *id;
176 JSONMessageParser parser;
177 /*
178 * When a client connects, we're in capabilities negotiation mode.
179 * When command qmp_capabilities succeeds, we go into command
180 * mode.
181 */
182 bool in_command_mode; /* are we in command mode? */
183 } MonitorQMP;
184
185 /*
186 * To prevent flooding clients, events can be throttled. The
187 * throttling is calculated globally, rather than per-Monitor
188 * instance.
189 */
190 typedef struct MonitorQAPIEventState {
191 QAPIEvent event; /* Throttling state for this event type and... */
192 QDict *data; /* ... data, see qapi_event_throttle_equal() */
193 QEMUTimer *timer; /* Timer for handling delayed events */
194 QDict *qdict; /* Delayed event (if any) */
195 } MonitorQAPIEventState;
196
197 typedef struct {
198 int64_t rate; /* Minimum time (in ns) between two events */
199 } MonitorQAPIEventConf;
200
201 struct Monitor {
202 CharDriverState *chr;
203 int reset_seen;
204 int flags;
205 int suspend_cnt;
206 bool skip_flush;
207
208 QemuMutex out_lock;
209 QString *outbuf;
210 guint out_watch;
211
212 /* Read under either BQL or out_lock, written with BQL+out_lock. */
213 int mux_out;
214
215 ReadLineState *rs;
216 MonitorQMP qmp;
217 CPUState *mon_cpu;
218 BlockCompletionFunc *password_completion_cb;
219 void *password_opaque;
220 mon_cmd_t *cmd_table;
221 QLIST_HEAD(,mon_fd_t) fds;
222 QLIST_ENTRY(Monitor) entry;
223 };
224
225 /* QMP checker flags */
226 #define QMP_ACCEPT_UNKNOWNS 1
227
228 /* Protects mon_list, monitor_event_state. */
229 static QemuMutex monitor_lock;
230
231 static QLIST_HEAD(mon_list, Monitor) mon_list;
232 static QLIST_HEAD(mon_fdsets, MonFdset) mon_fdsets;
233 static int mon_refcount;
234
235 static mon_cmd_t mon_cmds[];
236 static mon_cmd_t info_cmds[];
237
238 static const mon_cmd_t qmp_cmds[];
239
240 Monitor *cur_mon;
241
242 static QEMUClockType event_clock_type = QEMU_CLOCK_REALTIME;
243
244 static void monitor_command_cb(void *opaque, const char *cmdline,
245 void *readline_opaque);
246
247 /**
248 * Is @mon a QMP monitor?
249 */
250 static inline bool monitor_is_qmp(const Monitor *mon)
251 {
252 return (mon->flags & MONITOR_USE_CONTROL);
253 }
254
255 /**
256 * Is the current monitor, if any, a QMP monitor?
257 */
258 bool monitor_cur_is_qmp(void)
259 {
260 return cur_mon && monitor_is_qmp(cur_mon);
261 }
262
263 void monitor_read_command(Monitor *mon, int show_prompt)
264 {
265 if (!mon->rs)
266 return;
267
268 readline_start(mon->rs, "(qemu) ", 0, monitor_command_cb, NULL);
269 if (show_prompt)
270 readline_show_prompt(mon->rs);
271 }
272
273 int monitor_read_password(Monitor *mon, ReadLineFunc *readline_func,
274 void *opaque)
275 {
276 if (mon->rs) {
277 readline_start(mon->rs, "Password: ", 1, readline_func, opaque);
278 /* prompt is printed on return from the command handler */
279 return 0;
280 } else {
281 monitor_printf(mon, "terminal does not support password prompting\n");
282 return -ENOTTY;
283 }
284 }
285
286 static void monitor_flush_locked(Monitor *mon);
287
288 static gboolean monitor_unblocked(GIOChannel *chan, GIOCondition cond,
289 void *opaque)
290 {
291 Monitor *mon = opaque;
292
293 qemu_mutex_lock(&mon->out_lock);
294 mon->out_watch = 0;
295 monitor_flush_locked(mon);
296 qemu_mutex_unlock(&mon->out_lock);
297 return FALSE;
298 }
299
300 /* Called with mon->out_lock held. */
301 static void monitor_flush_locked(Monitor *mon)
302 {
303 int rc;
304 size_t len;
305 const char *buf;
306
307 if (mon->skip_flush) {
308 return;
309 }
310
311 buf = qstring_get_str(mon->outbuf);
312 len = qstring_get_length(mon->outbuf);
313
314 if (len && !mon->mux_out) {
315 rc = qemu_chr_fe_write(mon->chr, (const uint8_t *) buf, len);
316 if ((rc < 0 && errno != EAGAIN) || (rc == len)) {
317 /* all flushed or error */
318 QDECREF(mon->outbuf);
319 mon->outbuf = qstring_new();
320 return;
321 }
322 if (rc > 0) {
323 /* partial write */
324 QString *tmp = qstring_from_str(buf + rc);
325 QDECREF(mon->outbuf);
326 mon->outbuf = tmp;
327 }
328 if (mon->out_watch == 0) {
329 mon->out_watch = qemu_chr_fe_add_watch(mon->chr, G_IO_OUT|G_IO_HUP,
330 monitor_unblocked, mon);
331 }
332 }
333 }
334
335 void monitor_flush(Monitor *mon)
336 {
337 qemu_mutex_lock(&mon->out_lock);
338 monitor_flush_locked(mon);
339 qemu_mutex_unlock(&mon->out_lock);
340 }
341
342 /* flush at every end of line */
343 static void monitor_puts(Monitor *mon, const char *str)
344 {
345 char c;
346
347 qemu_mutex_lock(&mon->out_lock);
348 for(;;) {
349 c = *str++;
350 if (c == '\0')
351 break;
352 if (c == '\n') {
353 qstring_append_chr(mon->outbuf, '\r');
354 }
355 qstring_append_chr(mon->outbuf, c);
356 if (c == '\n') {
357 monitor_flush_locked(mon);
358 }
359 }
360 qemu_mutex_unlock(&mon->out_lock);
361 }
362
363 void monitor_vprintf(Monitor *mon, const char *fmt, va_list ap)
364 {
365 char *buf;
366
367 if (!mon)
368 return;
369
370 if (monitor_is_qmp(mon)) {
371 return;
372 }
373
374 buf = g_strdup_vprintf(fmt, ap);
375 monitor_puts(mon, buf);
376 g_free(buf);
377 }
378
379 void monitor_printf(Monitor *mon, const char *fmt, ...)
380 {
381 va_list ap;
382 va_start(ap, fmt);
383 monitor_vprintf(mon, fmt, ap);
384 va_end(ap);
385 }
386
387 int monitor_fprintf(FILE *stream, const char *fmt, ...)
388 {
389 va_list ap;
390 va_start(ap, fmt);
391 monitor_vprintf((Monitor *)stream, fmt, ap);
392 va_end(ap);
393 return 0;
394 }
395
396 static void monitor_json_emitter(Monitor *mon, const QObject *data)
397 {
398 QString *json;
399
400 json = mon->flags & MONITOR_USE_PRETTY ? qobject_to_json_pretty(data) :
401 qobject_to_json(data);
402 assert(json != NULL);
403
404 qstring_append_chr(json, '\n');
405 monitor_puts(mon, qstring_get_str(json));
406
407 QDECREF(json);
408 }
409
410 static QDict *build_qmp_error_dict(Error *err)
411 {
412 QObject *obj;
413
414 obj = qobject_from_jsonf("{ 'error': { 'class': %s, 'desc': %s } }",
415 QapiErrorClass_lookup[error_get_class(err)],
416 error_get_pretty(err));
417
418 return qobject_to_qdict(obj);
419 }
420
421 static void monitor_protocol_emitter(Monitor *mon, QObject *data,
422 Error *err)
423 {
424 QDict *qmp;
425
426 trace_monitor_protocol_emitter(mon);
427
428 if (!err) {
429 /* success response */
430 qmp = qdict_new();
431 if (data) {
432 qobject_incref(data);
433 qdict_put_obj(qmp, "return", data);
434 } else {
435 /* return an empty QDict by default */
436 qdict_put(qmp, "return", qdict_new());
437 }
438 } else {
439 /* error response */
440 qmp = build_qmp_error_dict(err);
441 }
442
443 if (mon->qmp.id) {
444 qdict_put_obj(qmp, "id", mon->qmp.id);
445 mon->qmp.id = NULL;
446 }
447
448 monitor_json_emitter(mon, QOBJECT(qmp));
449 QDECREF(qmp);
450 }
451
452
453 static MonitorQAPIEventConf monitor_qapi_event_conf[QAPI_EVENT__MAX] = {
454 /* Limit guest-triggerable events to 1 per second */
455 [QAPI_EVENT_RTC_CHANGE] = { 1000 * SCALE_MS },
456 [QAPI_EVENT_WATCHDOG] = { 1000 * SCALE_MS },
457 [QAPI_EVENT_BALLOON_CHANGE] = { 1000 * SCALE_MS },
458 [QAPI_EVENT_QUORUM_REPORT_BAD] = { 1000 * SCALE_MS },
459 [QAPI_EVENT_QUORUM_FAILURE] = { 1000 * SCALE_MS },
460 [QAPI_EVENT_VSERPORT_CHANGE] = { 1000 * SCALE_MS },
461 };
462
463 GHashTable *monitor_qapi_event_state;
464
465 /*
466 * Emits the event to every monitor instance, @event is only used for trace
467 * Called with monitor_lock held.
468 */
469 static void monitor_qapi_event_emit(QAPIEvent event, QDict *qdict)
470 {
471 Monitor *mon;
472
473 trace_monitor_protocol_event_emit(event, qdict);
474 QLIST_FOREACH(mon, &mon_list, entry) {
475 if (monitor_is_qmp(mon) && mon->qmp.in_command_mode) {
476 monitor_json_emitter(mon, QOBJECT(qdict));
477 }
478 }
479 }
480
481 static void monitor_qapi_event_handler(void *opaque);
482
483 /*
484 * Queue a new event for emission to Monitor instances,
485 * applying any rate limiting if required.
486 */
487 static void
488 monitor_qapi_event_queue(QAPIEvent event, QDict *qdict, Error **errp)
489 {
490 MonitorQAPIEventConf *evconf;
491 MonitorQAPIEventState *evstate;
492
493 assert(event < QAPI_EVENT__MAX);
494 evconf = &monitor_qapi_event_conf[event];
495 trace_monitor_protocol_event_queue(event, qdict, evconf->rate);
496
497 qemu_mutex_lock(&monitor_lock);
498
499 if (!evconf->rate) {
500 /* Unthrottled event */
501 monitor_qapi_event_emit(event, qdict);
502 } else {
503 QDict *data = qobject_to_qdict(qdict_get(qdict, "data"));
504 MonitorQAPIEventState key = { .event = event, .data = data };
505
506 evstate = g_hash_table_lookup(monitor_qapi_event_state, &key);
507 assert(!evstate || timer_pending(evstate->timer));
508
509 if (evstate) {
510 /*
511 * Timer is pending for (at least) evconf->rate ns after
512 * last send. Store event for sending when timer fires,
513 * replacing a prior stored event if any.
514 */
515 QDECREF(evstate->qdict);
516 evstate->qdict = qdict;
517 QINCREF(evstate->qdict);
518 } else {
519 /*
520 * Last send was (at least) evconf->rate ns ago.
521 * Send immediately, and arm the timer to call
522 * monitor_qapi_event_handler() in evconf->rate ns. Any
523 * events arriving before then will be delayed until then.
524 */
525 int64_t now = qemu_clock_get_ns(event_clock_type);
526
527 monitor_qapi_event_emit(event, qdict);
528
529 evstate = g_new(MonitorQAPIEventState, 1);
530 evstate->event = event;
531 evstate->data = data;
532 QINCREF(evstate->data);
533 evstate->qdict = NULL;
534 evstate->timer = timer_new_ns(event_clock_type,
535 monitor_qapi_event_handler,
536 evstate);
537 g_hash_table_add(monitor_qapi_event_state, evstate);
538 timer_mod_ns(evstate->timer, now + evconf->rate);
539 }
540 }
541
542 qemu_mutex_unlock(&monitor_lock);
543 }
544
545 /*
546 * This function runs evconf->rate ns after sending a throttled
547 * event.
548 * If another event has since been stored, send it.
549 */
550 static void monitor_qapi_event_handler(void *opaque)
551 {
552 MonitorQAPIEventState *evstate = opaque;
553 MonitorQAPIEventConf *evconf = &monitor_qapi_event_conf[evstate->event];
554
555 trace_monitor_protocol_event_handler(evstate->event, evstate->qdict);
556 qemu_mutex_lock(&monitor_lock);
557
558 if (evstate->qdict) {
559 int64_t now = qemu_clock_get_ns(event_clock_type);
560
561 monitor_qapi_event_emit(evstate->event, evstate->qdict);
562 QDECREF(evstate->qdict);
563 evstate->qdict = NULL;
564 timer_mod_ns(evstate->timer, now + evconf->rate);
565 } else {
566 g_hash_table_remove(monitor_qapi_event_state, evstate);
567 QDECREF(evstate->data);
568 timer_free(evstate->timer);
569 g_free(evstate);
570 }
571
572 qemu_mutex_unlock(&monitor_lock);
573 }
574
575 static unsigned int qapi_event_throttle_hash(const void *key)
576 {
577 const MonitorQAPIEventState *evstate = key;
578 unsigned int hash = evstate->event * 255;
579
580 if (evstate->event == QAPI_EVENT_VSERPORT_CHANGE) {
581 hash += g_str_hash(qdict_get_str(evstate->data, "id"));
582 }
583
584 if (evstate->event == QAPI_EVENT_QUORUM_REPORT_BAD) {
585 hash += g_str_hash(qdict_get_str(evstate->data, "node-name"));
586 }
587
588 return hash;
589 }
590
591 static gboolean qapi_event_throttle_equal(const void *a, const void *b)
592 {
593 const MonitorQAPIEventState *eva = a;
594 const MonitorQAPIEventState *evb = b;
595
596 if (eva->event != evb->event) {
597 return FALSE;
598 }
599
600 if (eva->event == QAPI_EVENT_VSERPORT_CHANGE) {
601 return !strcmp(qdict_get_str(eva->data, "id"),
602 qdict_get_str(evb->data, "id"));
603 }
604
605 if (eva->event == QAPI_EVENT_QUORUM_REPORT_BAD) {
606 return !strcmp(qdict_get_str(eva->data, "node-name"),
607 qdict_get_str(evb->data, "node-name"));
608 }
609
610 return TRUE;
611 }
612
613 static void monitor_qapi_event_init(void)
614 {
615 if (qtest_enabled()) {
616 event_clock_type = QEMU_CLOCK_VIRTUAL;
617 }
618
619 monitor_qapi_event_state = g_hash_table_new(qapi_event_throttle_hash,
620 qapi_event_throttle_equal);
621 qmp_event_set_func_emit(monitor_qapi_event_queue);
622 }
623
624 static void qmp_capabilities(QDict *params, QObject **ret_data, Error **errp)
625 {
626 cur_mon->qmp.in_command_mode = true;
627 }
628
629 static void handle_hmp_command(Monitor *mon, const char *cmdline);
630
631 static void monitor_data_init(Monitor *mon)
632 {
633 memset(mon, 0, sizeof(Monitor));
634 qemu_mutex_init(&mon->out_lock);
635 mon->outbuf = qstring_new();
636 /* Use *mon_cmds by default. */
637 mon->cmd_table = mon_cmds;
638 }
639
640 static void monitor_data_destroy(Monitor *mon)
641 {
642 QDECREF(mon->outbuf);
643 qemu_mutex_destroy(&mon->out_lock);
644 }
645
646 char *qmp_human_monitor_command(const char *command_line, bool has_cpu_index,
647 int64_t cpu_index, Error **errp)
648 {
649 char *output = NULL;
650 Monitor *old_mon, hmp;
651
652 monitor_data_init(&hmp);
653 hmp.skip_flush = true;
654
655 old_mon = cur_mon;
656 cur_mon = &hmp;
657
658 if (has_cpu_index) {
659 int ret = monitor_set_cpu(cpu_index);
660 if (ret < 0) {
661 cur_mon = old_mon;
662 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "cpu-index",
663 "a CPU number");
664 goto out;
665 }
666 }
667
668 handle_hmp_command(&hmp, command_line);
669 cur_mon = old_mon;
670
671 qemu_mutex_lock(&hmp.out_lock);
672 if (qstring_get_length(hmp.outbuf) > 0) {
673 output = g_strdup(qstring_get_str(hmp.outbuf));
674 } else {
675 output = g_strdup("");
676 }
677 qemu_mutex_unlock(&hmp.out_lock);
678
679 out:
680 monitor_data_destroy(&hmp);
681 return output;
682 }
683
684 static int compare_cmd(const char *name, const char *list)
685 {
686 const char *p, *pstart;
687 int len;
688 len = strlen(name);
689 p = list;
690 for(;;) {
691 pstart = p;
692 p = strchr(p, '|');
693 if (!p)
694 p = pstart + strlen(pstart);
695 if ((p - pstart) == len && !memcmp(pstart, name, len))
696 return 1;
697 if (*p == '\0')
698 break;
699 p++;
700 }
701 return 0;
702 }
703
704 static int get_str(char *buf, int buf_size, const char **pp)
705 {
706 const char *p;
707 char *q;
708 int c;
709
710 q = buf;
711 p = *pp;
712 while (qemu_isspace(*p)) {
713 p++;
714 }
715 if (*p == '\0') {
716 fail:
717 *q = '\0';
718 *pp = p;
719 return -1;
720 }
721 if (*p == '\"') {
722 p++;
723 while (*p != '\0' && *p != '\"') {
724 if (*p == '\\') {
725 p++;
726 c = *p++;
727 switch (c) {
728 case 'n':
729 c = '\n';
730 break;
731 case 'r':
732 c = '\r';
733 break;
734 case '\\':
735 case '\'':
736 case '\"':
737 break;
738 default:
739 printf("unsupported escape code: '\\%c'\n", c);
740 goto fail;
741 }
742 if ((q - buf) < buf_size - 1) {
743 *q++ = c;
744 }
745 } else {
746 if ((q - buf) < buf_size - 1) {
747 *q++ = *p;
748 }
749 p++;
750 }
751 }
752 if (*p != '\"') {
753 printf("unterminated string\n");
754 goto fail;
755 }
756 p++;
757 } else {
758 while (*p != '\0' && !qemu_isspace(*p)) {
759 if ((q - buf) < buf_size - 1) {
760 *q++ = *p;
761 }
762 p++;
763 }
764 }
765 *q = '\0';
766 *pp = p;
767 return 0;
768 }
769
770 #define MAX_ARGS 16
771
772 static void free_cmdline_args(char **args, int nb_args)
773 {
774 int i;
775
776 assert(nb_args <= MAX_ARGS);
777
778 for (i = 0; i < nb_args; i++) {
779 g_free(args[i]);
780 }
781
782 }
783
784 /*
785 * Parse the command line to get valid args.
786 * @cmdline: command line to be parsed.
787 * @pnb_args: location to store the number of args, must NOT be NULL.
788 * @args: location to store the args, which should be freed by caller, must
789 * NOT be NULL.
790 *
791 * Returns 0 on success, negative on failure.
792 *
793 * NOTE: this parser is an approximate form of the real command parser. Number
794 * of args have a limit of MAX_ARGS. If cmdline contains more, it will
795 * return with failure.
796 */
797 static int parse_cmdline(const char *cmdline,
798 int *pnb_args, char **args)
799 {
800 const char *p;
801 int nb_args, ret;
802 char buf[1024];
803
804 p = cmdline;
805 nb_args = 0;
806 for (;;) {
807 while (qemu_isspace(*p)) {
808 p++;
809 }
810 if (*p == '\0') {
811 break;
812 }
813 if (nb_args >= MAX_ARGS) {
814 goto fail;
815 }
816 ret = get_str(buf, sizeof(buf), &p);
817 if (ret < 0) {
818 goto fail;
819 }
820 args[nb_args] = g_strdup(buf);
821 nb_args++;
822 }
823 *pnb_args = nb_args;
824 return 0;
825
826 fail:
827 free_cmdline_args(args, nb_args);
828 return -1;
829 }
830
831 static void help_cmd_dump_one(Monitor *mon,
832 const mon_cmd_t *cmd,
833 char **prefix_args,
834 int prefix_args_nb)
835 {
836 int i;
837
838 for (i = 0; i < prefix_args_nb; i++) {
839 monitor_printf(mon, "%s ", prefix_args[i]);
840 }
841 monitor_printf(mon, "%s %s -- %s\n", cmd->name, cmd->params, cmd->help);
842 }
843
844 /* @args[@arg_index] is the valid command need to find in @cmds */
845 static void help_cmd_dump(Monitor *mon, const mon_cmd_t *cmds,
846 char **args, int nb_args, int arg_index)
847 {
848 const mon_cmd_t *cmd;
849
850 /* No valid arg need to compare with, dump all in *cmds */
851 if (arg_index >= nb_args) {
852 for (cmd = cmds; cmd->name != NULL; cmd++) {
853 help_cmd_dump_one(mon, cmd, args, arg_index);
854 }
855 return;
856 }
857
858 /* Find one entry to dump */
859 for (cmd = cmds; cmd->name != NULL; cmd++) {
860 if (compare_cmd(args[arg_index], cmd->name)) {
861 if (cmd->sub_table) {
862 /* continue with next arg */
863 help_cmd_dump(mon, cmd->sub_table,
864 args, nb_args, arg_index + 1);
865 } else {
866 help_cmd_dump_one(mon, cmd, args, arg_index);
867 }
868 break;
869 }
870 }
871 }
872
873 static void help_cmd(Monitor *mon, const char *name)
874 {
875 char *args[MAX_ARGS];
876 int nb_args = 0;
877
878 /* 1. parse user input */
879 if (name) {
880 /* special case for log, directly dump and return */
881 if (!strcmp(name, "log")) {
882 const QEMULogItem *item;
883 monitor_printf(mon, "Log items (comma separated):\n");
884 monitor_printf(mon, "%-10s %s\n", "none", "remove all logs");
885 for (item = qemu_log_items; item->mask != 0; item++) {
886 monitor_printf(mon, "%-10s %s\n", item->name, item->help);
887 }
888 return;
889 }
890
891 if (parse_cmdline(name, &nb_args, args) < 0) {
892 return;
893 }
894 }
895
896 /* 2. dump the contents according to parsed args */
897 help_cmd_dump(mon, mon->cmd_table, args, nb_args, 0);
898
899 free_cmdline_args(args, nb_args);
900 }
901
902 static void do_help_cmd(Monitor *mon, const QDict *qdict)
903 {
904 help_cmd(mon, qdict_get_try_str(qdict, "name"));
905 }
906
907 static void hmp_trace_event(Monitor *mon, const QDict *qdict)
908 {
909 const char *tp_name = qdict_get_str(qdict, "name");
910 bool new_state = qdict_get_bool(qdict, "option");
911 Error *local_err = NULL;
912
913 qmp_trace_event_set_state(tp_name, new_state, true, true, &local_err);
914 if (local_err) {
915 error_report_err(local_err);
916 }
917 }
918
919 #ifdef CONFIG_TRACE_SIMPLE
920 static void hmp_trace_file(Monitor *mon, const QDict *qdict)
921 {
922 const char *op = qdict_get_try_str(qdict, "op");
923 const char *arg = qdict_get_try_str(qdict, "arg");
924
925 if (!op) {
926 st_print_trace_file_status((FILE *)mon, &monitor_fprintf);
927 } else if (!strcmp(op, "on")) {
928 st_set_trace_file_enabled(true);
929 } else if (!strcmp(op, "off")) {
930 st_set_trace_file_enabled(false);
931 } else if (!strcmp(op, "flush")) {
932 st_flush_trace_buffer();
933 } else if (!strcmp(op, "set")) {
934 if (arg) {
935 st_set_trace_file(arg);
936 }
937 } else {
938 monitor_printf(mon, "unexpected argument \"%s\"\n", op);
939 help_cmd(mon, "trace-file");
940 }
941 }
942 #endif
943
944 static void hmp_info_help(Monitor *mon, const QDict *qdict)
945 {
946 help_cmd(mon, "info");
947 }
948
949 CommandInfoList *qmp_query_commands(Error **errp)
950 {
951 CommandInfoList *info, *cmd_list = NULL;
952 const mon_cmd_t *cmd;
953
954 for (cmd = qmp_cmds; cmd->name != NULL; cmd++) {
955 info = g_malloc0(sizeof(*info));
956 info->value = g_malloc0(sizeof(*info->value));
957 info->value->name = g_strdup(cmd->name);
958
959 info->next = cmd_list;
960 cmd_list = info;
961 }
962
963 return cmd_list;
964 }
965
966 EventInfoList *qmp_query_events(Error **errp)
967 {
968 EventInfoList *info, *ev_list = NULL;
969 QAPIEvent e;
970
971 for (e = 0 ; e < QAPI_EVENT__MAX ; e++) {
972 const char *event_name = QAPIEvent_lookup[e];
973 assert(event_name != NULL);
974 info = g_malloc0(sizeof(*info));
975 info->value = g_malloc0(sizeof(*info->value));
976 info->value->name = g_strdup(event_name);
977
978 info->next = ev_list;
979 ev_list = info;
980 }
981
982 return ev_list;
983 }
984
985 /*
986 * Minor hack: generated marshalling suppressed for this command
987 * ('gen': false in the schema) so we can parse the JSON string
988 * directly into QObject instead of first parsing it with
989 * visit_type_SchemaInfoList() into a SchemaInfoList, then marshal it
990 * to QObject with generated output marshallers, every time. Instead,
991 * we do it in test-qmp-input-visitor.c, just to make sure
992 * qapi-introspect.py's output actually conforms to the schema.
993 */
994 static void qmp_query_qmp_schema(QDict *qdict, QObject **ret_data,
995 Error **errp)
996 {
997 *ret_data = qobject_from_json(qmp_schema_json);
998 }
999
1000 /* set the current CPU defined by the user */
1001 int monitor_set_cpu(int cpu_index)
1002 {
1003 CPUState *cpu;
1004
1005 cpu = qemu_get_cpu(cpu_index);
1006 if (cpu == NULL) {
1007 return -1;
1008 }
1009 cur_mon->mon_cpu = cpu;
1010 return 0;
1011 }
1012
1013 CPUState *mon_get_cpu(void)
1014 {
1015 if (!cur_mon->mon_cpu) {
1016 monitor_set_cpu(0);
1017 }
1018 cpu_synchronize_state(cur_mon->mon_cpu);
1019 return cur_mon->mon_cpu;
1020 }
1021
1022 CPUArchState *mon_get_cpu_env(void)
1023 {
1024 return mon_get_cpu()->env_ptr;
1025 }
1026
1027 int monitor_get_cpu_index(void)
1028 {
1029 return mon_get_cpu()->cpu_index;
1030 }
1031
1032 static void hmp_info_registers(Monitor *mon, const QDict *qdict)
1033 {
1034 cpu_dump_state(mon_get_cpu(), (FILE *)mon, monitor_fprintf, CPU_DUMP_FPU);
1035 }
1036
1037 static void hmp_info_jit(Monitor *mon, const QDict *qdict)
1038 {
1039 dump_exec_info((FILE *)mon, monitor_fprintf);
1040 dump_drift_info((FILE *)mon, monitor_fprintf);
1041 }
1042
1043 static void hmp_info_opcount(Monitor *mon, const QDict *qdict)
1044 {
1045 dump_opcount_info((FILE *)mon, monitor_fprintf);
1046 }
1047
1048 static void hmp_info_history(Monitor *mon, const QDict *qdict)
1049 {
1050 int i;
1051 const char *str;
1052
1053 if (!mon->rs)
1054 return;
1055 i = 0;
1056 for(;;) {
1057 str = readline_get_history(mon->rs, i);
1058 if (!str)
1059 break;
1060 monitor_printf(mon, "%d: '%s'\n", i, str);
1061 i++;
1062 }
1063 }
1064
1065 static void hmp_info_cpustats(Monitor *mon, const QDict *qdict)
1066 {
1067 cpu_dump_statistics(mon_get_cpu(), (FILE *)mon, &monitor_fprintf, 0);
1068 }
1069
1070 static void hmp_info_trace_events(Monitor *mon, const QDict *qdict)
1071 {
1072 TraceEventInfoList *events = qmp_trace_event_get_state("*", NULL);
1073 TraceEventInfoList *elem;
1074
1075 for (elem = events; elem != NULL; elem = elem->next) {
1076 monitor_printf(mon, "%s : state %u\n",
1077 elem->value->name,
1078 elem->value->state == TRACE_EVENT_STATE_ENABLED ? 1 : 0);
1079 }
1080 qapi_free_TraceEventInfoList(events);
1081 }
1082
1083 void qmp_client_migrate_info(const char *protocol, const char *hostname,
1084 bool has_port, int64_t port,
1085 bool has_tls_port, int64_t tls_port,
1086 bool has_cert_subject, const char *cert_subject,
1087 Error **errp)
1088 {
1089 if (strcmp(protocol, "spice") == 0) {
1090 if (!qemu_using_spice(errp)) {
1091 return;
1092 }
1093
1094 if (!has_port && !has_tls_port) {
1095 error_setg(errp, QERR_MISSING_PARAMETER, "port/tls-port");
1096 return;
1097 }
1098
1099 if (qemu_spice_migrate_info(hostname,
1100 has_port ? port : -1,
1101 has_tls_port ? tls_port : -1,
1102 cert_subject)) {
1103 error_setg(errp, QERR_UNDEFINED_ERROR);
1104 return;
1105 }
1106 return;
1107 }
1108
1109 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "protocol", "spice");
1110 }
1111
1112 static void hmp_logfile(Monitor *mon, const QDict *qdict)
1113 {
1114 qemu_set_log_filename(qdict_get_str(qdict, "filename"));
1115 }
1116
1117 static void hmp_log(Monitor *mon, const QDict *qdict)
1118 {
1119 int mask;
1120 const char *items = qdict_get_str(qdict, "items");
1121
1122 if (!strcmp(items, "none")) {
1123 mask = 0;
1124 } else {
1125 mask = qemu_str_to_log_mask(items);
1126 if (!mask) {
1127 help_cmd(mon, "log");
1128 return;
1129 }
1130 }
1131 qemu_set_log(mask);
1132 }
1133
1134 static void hmp_singlestep(Monitor *mon, const QDict *qdict)
1135 {
1136 const char *option = qdict_get_try_str(qdict, "option");
1137 if (!option || !strcmp(option, "on")) {
1138 singlestep = 1;
1139 } else if (!strcmp(option, "off")) {
1140 singlestep = 0;
1141 } else {
1142 monitor_printf(mon, "unexpected option %s\n", option);
1143 }
1144 }
1145
1146 static void hmp_gdbserver(Monitor *mon, const QDict *qdict)
1147 {
1148 const char *device = qdict_get_try_str(qdict, "device");
1149 if (!device)
1150 device = "tcp::" DEFAULT_GDBSTUB_PORT;
1151 if (gdbserver_start(device) < 0) {
1152 monitor_printf(mon, "Could not open gdbserver on device '%s'\n",
1153 device);
1154 } else if (strcmp(device, "none") == 0) {
1155 monitor_printf(mon, "Disabled gdbserver\n");
1156 } else {
1157 monitor_printf(mon, "Waiting for gdb connection on device '%s'\n",
1158 device);
1159 }
1160 }
1161
1162 static void hmp_watchdog_action(Monitor *mon, const QDict *qdict)
1163 {
1164 const char *action = qdict_get_str(qdict, "action");
1165 if (select_watchdog_action(action) == -1) {
1166 monitor_printf(mon, "Unknown watchdog action '%s'\n", action);
1167 }
1168 }
1169
1170 static void monitor_printc(Monitor *mon, int c)
1171 {
1172 monitor_printf(mon, "'");
1173 switch(c) {
1174 case '\'':
1175 monitor_printf(mon, "\\'");
1176 break;
1177 case '\\':
1178 monitor_printf(mon, "\\\\");
1179 break;
1180 case '\n':
1181 monitor_printf(mon, "\\n");
1182 break;
1183 case '\r':
1184 monitor_printf(mon, "\\r");
1185 break;
1186 default:
1187 if (c >= 32 && c <= 126) {
1188 monitor_printf(mon, "%c", c);
1189 } else {
1190 monitor_printf(mon, "\\x%02x", c);
1191 }
1192 break;
1193 }
1194 monitor_printf(mon, "'");
1195 }
1196
1197 static void memory_dump(Monitor *mon, int count, int format, int wsize,
1198 hwaddr addr, int is_physical)
1199 {
1200 int l, line_size, i, max_digits, len;
1201 uint8_t buf[16];
1202 uint64_t v;
1203
1204 if (format == 'i') {
1205 int flags = 0;
1206 #ifdef TARGET_I386
1207 CPUArchState *env = mon_get_cpu_env();
1208 if (wsize == 2) {
1209 flags = 1;
1210 } else if (wsize == 4) {
1211 flags = 0;
1212 } else {
1213 /* as default we use the current CS size */
1214 flags = 0;
1215 if (env) {
1216 #ifdef TARGET_X86_64
1217 if ((env->efer & MSR_EFER_LMA) &&
1218 (env->segs[R_CS].flags & DESC_L_MASK))
1219 flags = 2;
1220 else
1221 #endif
1222 if (!(env->segs[R_CS].flags & DESC_B_MASK))
1223 flags = 1;
1224 }
1225 }
1226 #endif
1227 #ifdef TARGET_PPC
1228 CPUArchState *env = mon_get_cpu_env();
1229 flags = msr_le << 16;
1230 flags |= env->bfd_mach;
1231 #endif
1232 monitor_disas(mon, mon_get_cpu(), addr, count, is_physical, flags);
1233 return;
1234 }
1235
1236 len = wsize * count;
1237 if (wsize == 1)
1238 line_size = 8;
1239 else
1240 line_size = 16;
1241 max_digits = 0;
1242
1243 switch(format) {
1244 case 'o':
1245 max_digits = (wsize * 8 + 2) / 3;
1246 break;
1247 default:
1248 case 'x':
1249 max_digits = (wsize * 8) / 4;
1250 break;
1251 case 'u':
1252 case 'd':
1253 max_digits = (wsize * 8 * 10 + 32) / 33;
1254 break;
1255 case 'c':
1256 wsize = 1;
1257 break;
1258 }
1259
1260 while (len > 0) {
1261 if (is_physical)
1262 monitor_printf(mon, TARGET_FMT_plx ":", addr);
1263 else
1264 monitor_printf(mon, TARGET_FMT_lx ":", (target_ulong)addr);
1265 l = len;
1266 if (l > line_size)
1267 l = line_size;
1268 if (is_physical) {
1269 cpu_physical_memory_read(addr, buf, l);
1270 } else {
1271 if (cpu_memory_rw_debug(mon_get_cpu(), addr, buf, l, 0) < 0) {
1272 monitor_printf(mon, " Cannot access memory\n");
1273 break;
1274 }
1275 }
1276 i = 0;
1277 while (i < l) {
1278 switch(wsize) {
1279 default:
1280 case 1:
1281 v = ldub_p(buf + i);
1282 break;
1283 case 2:
1284 v = lduw_p(buf + i);
1285 break;
1286 case 4:
1287 v = (uint32_t)ldl_p(buf + i);
1288 break;
1289 case 8:
1290 v = ldq_p(buf + i);
1291 break;
1292 }
1293 monitor_printf(mon, " ");
1294 switch(format) {
1295 case 'o':
1296 monitor_printf(mon, "%#*" PRIo64, max_digits, v);
1297 break;
1298 case 'x':
1299 monitor_printf(mon, "0x%0*" PRIx64, max_digits, v);
1300 break;
1301 case 'u':
1302 monitor_printf(mon, "%*" PRIu64, max_digits, v);
1303 break;
1304 case 'd':
1305 monitor_printf(mon, "%*" PRId64, max_digits, v);
1306 break;
1307 case 'c':
1308 monitor_printc(mon, v);
1309 break;
1310 }
1311 i += wsize;
1312 }
1313 monitor_printf(mon, "\n");
1314 addr += l;
1315 len -= l;
1316 }
1317 }
1318
1319 static void hmp_memory_dump(Monitor *mon, const QDict *qdict)
1320 {
1321 int count = qdict_get_int(qdict, "count");
1322 int format = qdict_get_int(qdict, "format");
1323 int size = qdict_get_int(qdict, "size");
1324 target_long addr = qdict_get_int(qdict, "addr");
1325
1326 memory_dump(mon, count, format, size, addr, 0);
1327 }
1328
1329 static void hmp_physical_memory_dump(Monitor *mon, const QDict *qdict)
1330 {
1331 int count = qdict_get_int(qdict, "count");
1332 int format = qdict_get_int(qdict, "format");
1333 int size = qdict_get_int(qdict, "size");
1334 hwaddr addr = qdict_get_int(qdict, "addr");
1335
1336 memory_dump(mon, count, format, size, addr, 1);
1337 }
1338
1339 static void do_print(Monitor *mon, const QDict *qdict)
1340 {
1341 int format = qdict_get_int(qdict, "format");
1342 hwaddr val = qdict_get_int(qdict, "val");
1343
1344 switch(format) {
1345 case 'o':
1346 monitor_printf(mon, "%#" HWADDR_PRIo, val);
1347 break;
1348 case 'x':
1349 monitor_printf(mon, "%#" HWADDR_PRIx, val);
1350 break;
1351 case 'u':
1352 monitor_printf(mon, "%" HWADDR_PRIu, val);
1353 break;
1354 default:
1355 case 'd':
1356 monitor_printf(mon, "%" HWADDR_PRId, val);
1357 break;
1358 case 'c':
1359 monitor_printc(mon, val);
1360 break;
1361 }
1362 monitor_printf(mon, "\n");
1363 }
1364
1365 static void hmp_sum(Monitor *mon, const QDict *qdict)
1366 {
1367 uint32_t addr;
1368 uint16_t sum;
1369 uint32_t start = qdict_get_int(qdict, "start");
1370 uint32_t size = qdict_get_int(qdict, "size");
1371
1372 sum = 0;
1373 for(addr = start; addr < (start + size); addr++) {
1374 uint8_t val = address_space_ldub(&address_space_memory, addr,
1375 MEMTXATTRS_UNSPECIFIED, NULL);
1376 /* BSD sum algorithm ('sum' Unix command) */
1377 sum = (sum >> 1) | (sum << 15);
1378 sum += val;
1379 }
1380 monitor_printf(mon, "%05d\n", sum);
1381 }
1382
1383 static int mouse_button_state;
1384
1385 static void hmp_mouse_move(Monitor *mon, const QDict *qdict)
1386 {
1387 int dx, dy, dz, button;
1388 const char *dx_str = qdict_get_str(qdict, "dx_str");
1389 const char *dy_str = qdict_get_str(qdict, "dy_str");
1390 const char *dz_str = qdict_get_try_str(qdict, "dz_str");
1391
1392 dx = strtol(dx_str, NULL, 0);
1393 dy = strtol(dy_str, NULL, 0);
1394 qemu_input_queue_rel(NULL, INPUT_AXIS_X, dx);
1395 qemu_input_queue_rel(NULL, INPUT_AXIS_Y, dy);
1396
1397 if (dz_str) {
1398 dz = strtol(dz_str, NULL, 0);
1399 if (dz != 0) {
1400 button = (dz > 0) ? INPUT_BUTTON_WHEEL_UP : INPUT_BUTTON_WHEEL_DOWN;
1401 qemu_input_queue_btn(NULL, button, true);
1402 qemu_input_event_sync();
1403 qemu_input_queue_btn(NULL, button, false);
1404 }
1405 }
1406 qemu_input_event_sync();
1407 }
1408
1409 static void hmp_mouse_button(Monitor *mon, const QDict *qdict)
1410 {
1411 static uint32_t bmap[INPUT_BUTTON__MAX] = {
1412 [INPUT_BUTTON_LEFT] = MOUSE_EVENT_LBUTTON,
1413 [INPUT_BUTTON_MIDDLE] = MOUSE_EVENT_MBUTTON,
1414 [INPUT_BUTTON_RIGHT] = MOUSE_EVENT_RBUTTON,
1415 };
1416 int button_state = qdict_get_int(qdict, "button_state");
1417
1418 if (mouse_button_state == button_state) {
1419 return;
1420 }
1421 qemu_input_update_buttons(NULL, bmap, mouse_button_state, button_state);
1422 qemu_input_event_sync();
1423 mouse_button_state = button_state;
1424 }
1425
1426 static void hmp_ioport_read(Monitor *mon, const QDict *qdict)
1427 {
1428 int size = qdict_get_int(qdict, "size");
1429 int addr = qdict_get_int(qdict, "addr");
1430 int has_index = qdict_haskey(qdict, "index");
1431 uint32_t val;
1432 int suffix;
1433
1434 if (has_index) {
1435 int index = qdict_get_int(qdict, "index");
1436 cpu_outb(addr & IOPORTS_MASK, index & 0xff);
1437 addr++;
1438 }
1439 addr &= 0xffff;
1440
1441 switch(size) {
1442 default:
1443 case 1:
1444 val = cpu_inb(addr);
1445 suffix = 'b';
1446 break;
1447 case 2:
1448 val = cpu_inw(addr);
1449 suffix = 'w';
1450 break;
1451 case 4:
1452 val = cpu_inl(addr);
1453 suffix = 'l';
1454 break;
1455 }
1456 monitor_printf(mon, "port%c[0x%04x] = %#0*x\n",
1457 suffix, addr, size * 2, val);
1458 }
1459
1460 static void hmp_ioport_write(Monitor *mon, const QDict *qdict)
1461 {
1462 int size = qdict_get_int(qdict, "size");
1463 int addr = qdict_get_int(qdict, "addr");
1464 int val = qdict_get_int(qdict, "val");
1465
1466 addr &= IOPORTS_MASK;
1467
1468 switch (size) {
1469 default:
1470 case 1:
1471 cpu_outb(addr, val);
1472 break;
1473 case 2:
1474 cpu_outw(addr, val);
1475 break;
1476 case 4:
1477 cpu_outl(addr, val);
1478 break;
1479 }
1480 }
1481
1482 static void hmp_boot_set(Monitor *mon, const QDict *qdict)
1483 {
1484 Error *local_err = NULL;
1485 const char *bootdevice = qdict_get_str(qdict, "bootdevice");
1486
1487 qemu_boot_set(bootdevice, &local_err);
1488 if (local_err) {
1489 error_report_err(local_err);
1490 } else {
1491 monitor_printf(mon, "boot device list now set to %s\n", bootdevice);
1492 }
1493 }
1494
1495 static void hmp_info_mtree(Monitor *mon, const QDict *qdict)
1496 {
1497 mtree_info((fprintf_function)monitor_printf, mon);
1498 }
1499
1500 static void hmp_info_numa(Monitor *mon, const QDict *qdict)
1501 {
1502 int i;
1503 CPUState *cpu;
1504 uint64_t *node_mem;
1505
1506 node_mem = g_new0(uint64_t, nb_numa_nodes);
1507 query_numa_node_mem(node_mem);
1508 monitor_printf(mon, "%d nodes\n", nb_numa_nodes);
1509 for (i = 0; i < nb_numa_nodes; i++) {
1510 monitor_printf(mon, "node %d cpus:", i);
1511 CPU_FOREACH(cpu) {
1512 if (cpu->numa_node == i) {
1513 monitor_printf(mon, " %d", cpu->cpu_index);
1514 }
1515 }
1516 monitor_printf(mon, "\n");
1517 monitor_printf(mon, "node %d size: %" PRId64 " MB\n", i,
1518 node_mem[i] >> 20);
1519 }
1520 g_free(node_mem);
1521 }
1522
1523 #ifdef CONFIG_PROFILER
1524
1525 int64_t tcg_time;
1526 int64_t dev_time;
1527
1528 static void hmp_info_profile(Monitor *mon, const QDict *qdict)
1529 {
1530 monitor_printf(mon, "async time %" PRId64 " (%0.3f)\n",
1531 dev_time, dev_time / (double)NANOSECONDS_PER_SECOND);
1532 monitor_printf(mon, "qemu time %" PRId64 " (%0.3f)\n",
1533 tcg_time, tcg_time / (double)NANOSECONDS_PER_SECOND);
1534 tcg_time = 0;
1535 dev_time = 0;
1536 }
1537 #else
1538 static void hmp_info_profile(Monitor *mon, const QDict *qdict)
1539 {
1540 monitor_printf(mon, "Internal profiler not compiled\n");
1541 }
1542 #endif
1543
1544 /* Capture support */
1545 static QLIST_HEAD (capture_list_head, CaptureState) capture_head;
1546
1547 static void hmp_info_capture(Monitor *mon, const QDict *qdict)
1548 {
1549 int i;
1550 CaptureState *s;
1551
1552 for (s = capture_head.lh_first, i = 0; s; s = s->entries.le_next, ++i) {
1553 monitor_printf(mon, "[%d]: ", i);
1554 s->ops.info (s->opaque);
1555 }
1556 }
1557
1558 static void hmp_stopcapture(Monitor *mon, const QDict *qdict)
1559 {
1560 int i;
1561 int n = qdict_get_int(qdict, "n");
1562 CaptureState *s;
1563
1564 for (s = capture_head.lh_first, i = 0; s; s = s->entries.le_next, ++i) {
1565 if (i == n) {
1566 s->ops.destroy (s->opaque);
1567 QLIST_REMOVE (s, entries);
1568 g_free (s);
1569 return;
1570 }
1571 }
1572 }
1573
1574 static void hmp_wavcapture(Monitor *mon, const QDict *qdict)
1575 {
1576 const char *path = qdict_get_str(qdict, "path");
1577 int has_freq = qdict_haskey(qdict, "freq");
1578 int freq = qdict_get_try_int(qdict, "freq", -1);
1579 int has_bits = qdict_haskey(qdict, "bits");
1580 int bits = qdict_get_try_int(qdict, "bits", -1);
1581 int has_channels = qdict_haskey(qdict, "nchannels");
1582 int nchannels = qdict_get_try_int(qdict, "nchannels", -1);
1583 CaptureState *s;
1584
1585 s = g_malloc0 (sizeof (*s));
1586
1587 freq = has_freq ? freq : 44100;
1588 bits = has_bits ? bits : 16;
1589 nchannels = has_channels ? nchannels : 2;
1590
1591 if (wav_start_capture (s, path, freq, bits, nchannels)) {
1592 monitor_printf(mon, "Failed to add wave capture\n");
1593 g_free (s);
1594 return;
1595 }
1596 QLIST_INSERT_HEAD (&capture_head, s, entries);
1597 }
1598
1599 static qemu_acl *find_acl(Monitor *mon, const char *name)
1600 {
1601 qemu_acl *acl = qemu_acl_find(name);
1602
1603 if (!acl) {
1604 monitor_printf(mon, "acl: unknown list '%s'\n", name);
1605 }
1606 return acl;
1607 }
1608
1609 static void hmp_acl_show(Monitor *mon, const QDict *qdict)
1610 {
1611 const char *aclname = qdict_get_str(qdict, "aclname");
1612 qemu_acl *acl = find_acl(mon, aclname);
1613 qemu_acl_entry *entry;
1614 int i = 0;
1615
1616 if (acl) {
1617 monitor_printf(mon, "policy: %s\n",
1618 acl->defaultDeny ? "deny" : "allow");
1619 QTAILQ_FOREACH(entry, &acl->entries, next) {
1620 i++;
1621 monitor_printf(mon, "%d: %s %s\n", i,
1622 entry->deny ? "deny" : "allow", entry->match);
1623 }
1624 }
1625 }
1626
1627 static void hmp_acl_reset(Monitor *mon, const QDict *qdict)
1628 {
1629 const char *aclname = qdict_get_str(qdict, "aclname");
1630 qemu_acl *acl = find_acl(mon, aclname);
1631
1632 if (acl) {
1633 qemu_acl_reset(acl);
1634 monitor_printf(mon, "acl: removed all rules\n");
1635 }
1636 }
1637
1638 static void hmp_acl_policy(Monitor *mon, const QDict *qdict)
1639 {
1640 const char *aclname = qdict_get_str(qdict, "aclname");
1641 const char *policy = qdict_get_str(qdict, "policy");
1642 qemu_acl *acl = find_acl(mon, aclname);
1643
1644 if (acl) {
1645 if (strcmp(policy, "allow") == 0) {
1646 acl->defaultDeny = 0;
1647 monitor_printf(mon, "acl: policy set to 'allow'\n");
1648 } else if (strcmp(policy, "deny") == 0) {
1649 acl->defaultDeny = 1;
1650 monitor_printf(mon, "acl: policy set to 'deny'\n");
1651 } else {
1652 monitor_printf(mon, "acl: unknown policy '%s', "
1653 "expected 'deny' or 'allow'\n", policy);
1654 }
1655 }
1656 }
1657
1658 static void hmp_acl_add(Monitor *mon, const QDict *qdict)
1659 {
1660 const char *aclname = qdict_get_str(qdict, "aclname");
1661 const char *match = qdict_get_str(qdict, "match");
1662 const char *policy = qdict_get_str(qdict, "policy");
1663 int has_index = qdict_haskey(qdict, "index");
1664 int index = qdict_get_try_int(qdict, "index", -1);
1665 qemu_acl *acl = find_acl(mon, aclname);
1666 int deny, ret;
1667
1668 if (acl) {
1669 if (strcmp(policy, "allow") == 0) {
1670 deny = 0;
1671 } else if (strcmp(policy, "deny") == 0) {
1672 deny = 1;
1673 } else {
1674 monitor_printf(mon, "acl: unknown policy '%s', "
1675 "expected 'deny' or 'allow'\n", policy);
1676 return;
1677 }
1678 if (has_index)
1679 ret = qemu_acl_insert(acl, deny, match, index);
1680 else
1681 ret = qemu_acl_append(acl, deny, match);
1682 if (ret < 0)
1683 monitor_printf(mon, "acl: unable to add acl entry\n");
1684 else
1685 monitor_printf(mon, "acl: added rule at position %d\n", ret);
1686 }
1687 }
1688
1689 static void hmp_acl_remove(Monitor *mon, const QDict *qdict)
1690 {
1691 const char *aclname = qdict_get_str(qdict, "aclname");
1692 const char *match = qdict_get_str(qdict, "match");
1693 qemu_acl *acl = find_acl(mon, aclname);
1694 int ret;
1695
1696 if (acl) {
1697 ret = qemu_acl_remove(acl, match);
1698 if (ret < 0)
1699 monitor_printf(mon, "acl: no matching acl entry\n");
1700 else
1701 monitor_printf(mon, "acl: removed rule at position %d\n", ret);
1702 }
1703 }
1704
1705 void qmp_getfd(const char *fdname, Error **errp)
1706 {
1707 mon_fd_t *monfd;
1708 int fd;
1709
1710 fd = qemu_chr_fe_get_msgfd(cur_mon->chr);
1711 if (fd == -1) {
1712 error_setg(errp, QERR_FD_NOT_SUPPLIED);
1713 return;
1714 }
1715
1716 if (qemu_isdigit(fdname[0])) {
1717 close(fd);
1718 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "fdname",
1719 "a name not starting with a digit");
1720 return;
1721 }
1722
1723 QLIST_FOREACH(monfd, &cur_mon->fds, next) {
1724 if (strcmp(monfd->name, fdname) != 0) {
1725 continue;
1726 }
1727
1728 close(monfd->fd);
1729 monfd->fd = fd;
1730 return;
1731 }
1732
1733 monfd = g_malloc0(sizeof(mon_fd_t));
1734 monfd->name = g_strdup(fdname);
1735 monfd->fd = fd;
1736
1737 QLIST_INSERT_HEAD(&cur_mon->fds, monfd, next);
1738 }
1739
1740 void qmp_closefd(const char *fdname, Error **errp)
1741 {
1742 mon_fd_t *monfd;
1743
1744 QLIST_FOREACH(monfd, &cur_mon->fds, next) {
1745 if (strcmp(monfd->name, fdname) != 0) {
1746 continue;
1747 }
1748
1749 QLIST_REMOVE(monfd, next);
1750 close(monfd->fd);
1751 g_free(monfd->name);
1752 g_free(monfd);
1753 return;
1754 }
1755
1756 error_setg(errp, QERR_FD_NOT_FOUND, fdname);
1757 }
1758
1759 static void hmp_loadvm(Monitor *mon, const QDict *qdict)
1760 {
1761 int saved_vm_running = runstate_is_running();
1762 const char *name = qdict_get_str(qdict, "name");
1763
1764 vm_stop(RUN_STATE_RESTORE_VM);
1765
1766 if (load_vmstate(name) == 0 && saved_vm_running) {
1767 vm_start();
1768 }
1769 }
1770
1771 int monitor_get_fd(Monitor *mon, const char *fdname, Error **errp)
1772 {
1773 mon_fd_t *monfd;
1774
1775 QLIST_FOREACH(monfd, &mon->fds, next) {
1776 int fd;
1777
1778 if (strcmp(monfd->name, fdname) != 0) {
1779 continue;
1780 }
1781
1782 fd = monfd->fd;
1783
1784 /* caller takes ownership of fd */
1785 QLIST_REMOVE(monfd, next);
1786 g_free(monfd->name);
1787 g_free(monfd);
1788
1789 return fd;
1790 }
1791
1792 error_setg(errp, "File descriptor named '%s' has not been found", fdname);
1793 return -1;
1794 }
1795
1796 static void monitor_fdset_cleanup(MonFdset *mon_fdset)
1797 {
1798 MonFdsetFd *mon_fdset_fd;
1799 MonFdsetFd *mon_fdset_fd_next;
1800
1801 QLIST_FOREACH_SAFE(mon_fdset_fd, &mon_fdset->fds, next, mon_fdset_fd_next) {
1802 if ((mon_fdset_fd->removed ||
1803 (QLIST_EMPTY(&mon_fdset->dup_fds) && mon_refcount == 0)) &&
1804 runstate_is_running()) {
1805 close(mon_fdset_fd->fd);
1806 g_free(mon_fdset_fd->opaque);
1807 QLIST_REMOVE(mon_fdset_fd, next);
1808 g_free(mon_fdset_fd);
1809 }
1810 }
1811
1812 if (QLIST_EMPTY(&mon_fdset->fds) && QLIST_EMPTY(&mon_fdset->dup_fds)) {
1813 QLIST_REMOVE(mon_fdset, next);
1814 g_free(mon_fdset);
1815 }
1816 }
1817
1818 static void monitor_fdsets_cleanup(void)
1819 {
1820 MonFdset *mon_fdset;
1821 MonFdset *mon_fdset_next;
1822
1823 QLIST_FOREACH_SAFE(mon_fdset, &mon_fdsets, next, mon_fdset_next) {
1824 monitor_fdset_cleanup(mon_fdset);
1825 }
1826 }
1827
1828 AddfdInfo *qmp_add_fd(bool has_fdset_id, int64_t fdset_id, bool has_opaque,
1829 const char *opaque, Error **errp)
1830 {
1831 int fd;
1832 Monitor *mon = cur_mon;
1833 AddfdInfo *fdinfo;
1834
1835 fd = qemu_chr_fe_get_msgfd(mon->chr);
1836 if (fd == -1) {
1837 error_setg(errp, QERR_FD_NOT_SUPPLIED);
1838 goto error;
1839 }
1840
1841 fdinfo = monitor_fdset_add_fd(fd, has_fdset_id, fdset_id,
1842 has_opaque, opaque, errp);
1843 if (fdinfo) {
1844 return fdinfo;
1845 }
1846
1847 error:
1848 if (fd != -1) {
1849 close(fd);
1850 }
1851 return NULL;
1852 }
1853
1854 void qmp_remove_fd(int64_t fdset_id, bool has_fd, int64_t fd, Error **errp)
1855 {
1856 MonFdset *mon_fdset;
1857 MonFdsetFd *mon_fdset_fd;
1858 char fd_str[60];
1859
1860 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
1861 if (mon_fdset->id != fdset_id) {
1862 continue;
1863 }
1864 QLIST_FOREACH(mon_fdset_fd, &mon_fdset->fds, next) {
1865 if (has_fd) {
1866 if (mon_fdset_fd->fd != fd) {
1867 continue;
1868 }
1869 mon_fdset_fd->removed = true;
1870 break;
1871 } else {
1872 mon_fdset_fd->removed = true;
1873 }
1874 }
1875 if (has_fd && !mon_fdset_fd) {
1876 goto error;
1877 }
1878 monitor_fdset_cleanup(mon_fdset);
1879 return;
1880 }
1881
1882 error:
1883 if (has_fd) {
1884 snprintf(fd_str, sizeof(fd_str), "fdset-id:%" PRId64 ", fd:%" PRId64,
1885 fdset_id, fd);
1886 } else {
1887 snprintf(fd_str, sizeof(fd_str), "fdset-id:%" PRId64, fdset_id);
1888 }
1889 error_setg(errp, QERR_FD_NOT_FOUND, fd_str);
1890 }
1891
1892 FdsetInfoList *qmp_query_fdsets(Error **errp)
1893 {
1894 MonFdset *mon_fdset;
1895 MonFdsetFd *mon_fdset_fd;
1896 FdsetInfoList *fdset_list = NULL;
1897
1898 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
1899 FdsetInfoList *fdset_info = g_malloc0(sizeof(*fdset_info));
1900 FdsetFdInfoList *fdsetfd_list = NULL;
1901
1902 fdset_info->value = g_malloc0(sizeof(*fdset_info->value));
1903 fdset_info->value->fdset_id = mon_fdset->id;
1904
1905 QLIST_FOREACH(mon_fdset_fd, &mon_fdset->fds, next) {
1906 FdsetFdInfoList *fdsetfd_info;
1907
1908 fdsetfd_info = g_malloc0(sizeof(*fdsetfd_info));
1909 fdsetfd_info->value = g_malloc0(sizeof(*fdsetfd_info->value));
1910 fdsetfd_info->value->fd = mon_fdset_fd->fd;
1911 if (mon_fdset_fd->opaque) {
1912 fdsetfd_info->value->has_opaque = true;
1913 fdsetfd_info->value->opaque = g_strdup(mon_fdset_fd->opaque);
1914 } else {
1915 fdsetfd_info->value->has_opaque = false;
1916 }
1917
1918 fdsetfd_info->next = fdsetfd_list;
1919 fdsetfd_list = fdsetfd_info;
1920 }
1921
1922 fdset_info->value->fds = fdsetfd_list;
1923
1924 fdset_info->next = fdset_list;
1925 fdset_list = fdset_info;
1926 }
1927
1928 return fdset_list;
1929 }
1930
1931 AddfdInfo *monitor_fdset_add_fd(int fd, bool has_fdset_id, int64_t fdset_id,
1932 bool has_opaque, const char *opaque,
1933 Error **errp)
1934 {
1935 MonFdset *mon_fdset = NULL;
1936 MonFdsetFd *mon_fdset_fd;
1937 AddfdInfo *fdinfo;
1938
1939 if (has_fdset_id) {
1940 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
1941 /* Break if match found or match impossible due to ordering by ID */
1942 if (fdset_id <= mon_fdset->id) {
1943 if (fdset_id < mon_fdset->id) {
1944 mon_fdset = NULL;
1945 }
1946 break;
1947 }
1948 }
1949 }
1950
1951 if (mon_fdset == NULL) {
1952 int64_t fdset_id_prev = -1;
1953 MonFdset *mon_fdset_cur = QLIST_FIRST(&mon_fdsets);
1954
1955 if (has_fdset_id) {
1956 if (fdset_id < 0) {
1957 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "fdset-id",
1958 "a non-negative value");
1959 return NULL;
1960 }
1961 /* Use specified fdset ID */
1962 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
1963 mon_fdset_cur = mon_fdset;
1964 if (fdset_id < mon_fdset_cur->id) {
1965 break;
1966 }
1967 }
1968 } else {
1969 /* Use first available fdset ID */
1970 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
1971 mon_fdset_cur = mon_fdset;
1972 if (fdset_id_prev == mon_fdset_cur->id - 1) {
1973 fdset_id_prev = mon_fdset_cur->id;
1974 continue;
1975 }
1976 break;
1977 }
1978 }
1979
1980 mon_fdset = g_malloc0(sizeof(*mon_fdset));
1981 if (has_fdset_id) {
1982 mon_fdset->id = fdset_id;
1983 } else {
1984 mon_fdset->id = fdset_id_prev + 1;
1985 }
1986
1987 /* The fdset list is ordered by fdset ID */
1988 if (!mon_fdset_cur) {
1989 QLIST_INSERT_HEAD(&mon_fdsets, mon_fdset, next);
1990 } else if (mon_fdset->id < mon_fdset_cur->id) {
1991 QLIST_INSERT_BEFORE(mon_fdset_cur, mon_fdset, next);
1992 } else {
1993 QLIST_INSERT_AFTER(mon_fdset_cur, mon_fdset, next);
1994 }
1995 }
1996
1997 mon_fdset_fd = g_malloc0(sizeof(*mon_fdset_fd));
1998 mon_fdset_fd->fd = fd;
1999 mon_fdset_fd->removed = false;
2000 if (has_opaque) {
2001 mon_fdset_fd->opaque = g_strdup(opaque);
2002 }
2003 QLIST_INSERT_HEAD(&mon_fdset->fds, mon_fdset_fd, next);
2004
2005 fdinfo = g_malloc0(sizeof(*fdinfo));
2006 fdinfo->fdset_id = mon_fdset->id;
2007 fdinfo->fd = mon_fdset_fd->fd;
2008
2009 return fdinfo;
2010 }
2011
2012 int monitor_fdset_get_fd(int64_t fdset_id, int flags)
2013 {
2014 #ifndef _WIN32
2015 MonFdset *mon_fdset;
2016 MonFdsetFd *mon_fdset_fd;
2017 int mon_fd_flags;
2018
2019 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2020 if (mon_fdset->id != fdset_id) {
2021 continue;
2022 }
2023 QLIST_FOREACH(mon_fdset_fd, &mon_fdset->fds, next) {
2024 mon_fd_flags = fcntl(mon_fdset_fd->fd, F_GETFL);
2025 if (mon_fd_flags == -1) {
2026 return -1;
2027 }
2028
2029 if ((flags & O_ACCMODE) == (mon_fd_flags & O_ACCMODE)) {
2030 return mon_fdset_fd->fd;
2031 }
2032 }
2033 errno = EACCES;
2034 return -1;
2035 }
2036 #endif
2037
2038 errno = ENOENT;
2039 return -1;
2040 }
2041
2042 int monitor_fdset_dup_fd_add(int64_t fdset_id, int dup_fd)
2043 {
2044 MonFdset *mon_fdset;
2045 MonFdsetFd *mon_fdset_fd_dup;
2046
2047 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2048 if (mon_fdset->id != fdset_id) {
2049 continue;
2050 }
2051 QLIST_FOREACH(mon_fdset_fd_dup, &mon_fdset->dup_fds, next) {
2052 if (mon_fdset_fd_dup->fd == dup_fd) {
2053 return -1;
2054 }
2055 }
2056 mon_fdset_fd_dup = g_malloc0(sizeof(*mon_fdset_fd_dup));
2057 mon_fdset_fd_dup->fd = dup_fd;
2058 QLIST_INSERT_HEAD(&mon_fdset->dup_fds, mon_fdset_fd_dup, next);
2059 return 0;
2060 }
2061 return -1;
2062 }
2063
2064 static int monitor_fdset_dup_fd_find_remove(int dup_fd, bool remove)
2065 {
2066 MonFdset *mon_fdset;
2067 MonFdsetFd *mon_fdset_fd_dup;
2068
2069 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2070 QLIST_FOREACH(mon_fdset_fd_dup, &mon_fdset->dup_fds, next) {
2071 if (mon_fdset_fd_dup->fd == dup_fd) {
2072 if (remove) {
2073 QLIST_REMOVE(mon_fdset_fd_dup, next);
2074 if (QLIST_EMPTY(&mon_fdset->dup_fds)) {
2075 monitor_fdset_cleanup(mon_fdset);
2076 }
2077 return -1;
2078 } else {
2079 return mon_fdset->id;
2080 }
2081 }
2082 }
2083 }
2084 return -1;
2085 }
2086
2087 int monitor_fdset_dup_fd_find(int dup_fd)
2088 {
2089 return monitor_fdset_dup_fd_find_remove(dup_fd, false);
2090 }
2091
2092 void monitor_fdset_dup_fd_remove(int dup_fd)
2093 {
2094 monitor_fdset_dup_fd_find_remove(dup_fd, true);
2095 }
2096
2097 int monitor_fd_param(Monitor *mon, const char *fdname, Error **errp)
2098 {
2099 int fd;
2100 Error *local_err = NULL;
2101
2102 if (!qemu_isdigit(fdname[0]) && mon) {
2103 fd = monitor_get_fd(mon, fdname, &local_err);
2104 } else {
2105 fd = qemu_parse_fd(fdname);
2106 if (fd == -1) {
2107 error_setg(&local_err, "Invalid file descriptor number '%s'",
2108 fdname);
2109 }
2110 }
2111 if (local_err) {
2112 error_propagate(errp, local_err);
2113 assert(fd == -1);
2114 } else {
2115 assert(fd != -1);
2116 }
2117
2118 return fd;
2119 }
2120
2121 /* Please update hmp-commands.hx when adding or changing commands */
2122 static mon_cmd_t info_cmds[] = {
2123 #include "hmp-commands-info.h"
2124 { NULL, NULL, },
2125 };
2126
2127 /* mon_cmds and info_cmds would be sorted at runtime */
2128 static mon_cmd_t mon_cmds[] = {
2129 #include "hmp-commands.h"
2130 { NULL, NULL, },
2131 };
2132
2133 static const mon_cmd_t qmp_cmds[] = {
2134 #include "qmp-commands-old.h"
2135 { /* NULL */ },
2136 };
2137
2138 /*******************************************************************/
2139
2140 static const char *pch;
2141 static sigjmp_buf expr_env;
2142
2143
2144 static void GCC_FMT_ATTR(2, 3) QEMU_NORETURN
2145 expr_error(Monitor *mon, const char *fmt, ...)
2146 {
2147 va_list ap;
2148 va_start(ap, fmt);
2149 monitor_vprintf(mon, fmt, ap);
2150 monitor_printf(mon, "\n");
2151 va_end(ap);
2152 siglongjmp(expr_env, 1);
2153 }
2154
2155 /* return 0 if OK, -1 if not found */
2156 static int get_monitor_def(target_long *pval, const char *name)
2157 {
2158 const MonitorDef *md = target_monitor_defs();
2159 void *ptr;
2160 uint64_t tmp = 0;
2161 int ret;
2162
2163 if (md == NULL) {
2164 return -1;
2165 }
2166
2167 for(; md->name != NULL; md++) {
2168 if (compare_cmd(name, md->name)) {
2169 if (md->get_value) {
2170 *pval = md->get_value(md, md->offset);
2171 } else {
2172 CPUArchState *env = mon_get_cpu_env();
2173 ptr = (uint8_t *)env + md->offset;
2174 switch(md->type) {
2175 case MD_I32:
2176 *pval = *(int32_t *)ptr;
2177 break;
2178 case MD_TLONG:
2179 *pval = *(target_long *)ptr;
2180 break;
2181 default:
2182 *pval = 0;
2183 break;
2184 }
2185 }
2186 return 0;
2187 }
2188 }
2189
2190 ret = target_get_monitor_def(mon_get_cpu(), name, &tmp);
2191 if (!ret) {
2192 *pval = (target_long) tmp;
2193 }
2194
2195 return ret;
2196 }
2197
2198 static void next(void)
2199 {
2200 if (*pch != '\0') {
2201 pch++;
2202 while (qemu_isspace(*pch))
2203 pch++;
2204 }
2205 }
2206
2207 static int64_t expr_sum(Monitor *mon);
2208
2209 static int64_t expr_unary(Monitor *mon)
2210 {
2211 int64_t n;
2212 char *p;
2213 int ret;
2214
2215 switch(*pch) {
2216 case '+':
2217 next();
2218 n = expr_unary(mon);
2219 break;
2220 case '-':
2221 next();
2222 n = -expr_unary(mon);
2223 break;
2224 case '~':
2225 next();
2226 n = ~expr_unary(mon);
2227 break;
2228 case '(':
2229 next();
2230 n = expr_sum(mon);
2231 if (*pch != ')') {
2232 expr_error(mon, "')' expected");
2233 }
2234 next();
2235 break;
2236 case '\'':
2237 pch++;
2238 if (*pch == '\0')
2239 expr_error(mon, "character constant expected");
2240 n = *pch;
2241 pch++;
2242 if (*pch != '\'')
2243 expr_error(mon, "missing terminating \' character");
2244 next();
2245 break;
2246 case '$':
2247 {
2248 char buf[128], *q;
2249 target_long reg=0;
2250
2251 pch++;
2252 q = buf;
2253 while ((*pch >= 'a' && *pch <= 'z') ||
2254 (*pch >= 'A' && *pch <= 'Z') ||
2255 (*pch >= '0' && *pch <= '9') ||
2256 *pch == '_' || *pch == '.') {
2257 if ((q - buf) < sizeof(buf) - 1)
2258 *q++ = *pch;
2259 pch++;
2260 }
2261 while (qemu_isspace(*pch))
2262 pch++;
2263 *q = 0;
2264 ret = get_monitor_def(&reg, buf);
2265 if (ret < 0)
2266 expr_error(mon, "unknown register");
2267 n = reg;
2268 }
2269 break;
2270 case '\0':
2271 expr_error(mon, "unexpected end of expression");
2272 n = 0;
2273 break;
2274 default:
2275 errno = 0;
2276 n = strtoull(pch, &p, 0);
2277 if (errno == ERANGE) {
2278 expr_error(mon, "number too large");
2279 }
2280 if (pch == p) {
2281 expr_error(mon, "invalid char '%c' in expression", *p);
2282 }
2283 pch = p;
2284 while (qemu_isspace(*pch))
2285 pch++;
2286 break;
2287 }
2288 return n;
2289 }
2290
2291
2292 static int64_t expr_prod(Monitor *mon)
2293 {
2294 int64_t val, val2;
2295 int op;
2296
2297 val = expr_unary(mon);
2298 for(;;) {
2299 op = *pch;
2300 if (op != '*' && op != '/' && op != '%')
2301 break;
2302 next();
2303 val2 = expr_unary(mon);
2304 switch(op) {
2305 default:
2306 case '*':
2307 val *= val2;
2308 break;
2309 case '/':
2310 case '%':
2311 if (val2 == 0)
2312 expr_error(mon, "division by zero");
2313 if (op == '/')
2314 val /= val2;
2315 else
2316 val %= val2;
2317 break;
2318 }
2319 }
2320 return val;
2321 }
2322
2323 static int64_t expr_logic(Monitor *mon)
2324 {
2325 int64_t val, val2;
2326 int op;
2327
2328 val = expr_prod(mon);
2329 for(;;) {
2330 op = *pch;
2331 if (op != '&' && op != '|' && op != '^')
2332 break;
2333 next();
2334 val2 = expr_prod(mon);
2335 switch(op) {
2336 default:
2337 case '&':
2338 val &= val2;
2339 break;
2340 case '|':
2341 val |= val2;
2342 break;
2343 case '^':
2344 val ^= val2;
2345 break;
2346 }
2347 }
2348 return val;
2349 }
2350
2351 static int64_t expr_sum(Monitor *mon)
2352 {
2353 int64_t val, val2;
2354 int op;
2355
2356 val = expr_logic(mon);
2357 for(;;) {
2358 op = *pch;
2359 if (op != '+' && op != '-')
2360 break;
2361 next();
2362 val2 = expr_logic(mon);
2363 if (op == '+')
2364 val += val2;
2365 else
2366 val -= val2;
2367 }
2368 return val;
2369 }
2370
2371 static int get_expr(Monitor *mon, int64_t *pval, const char **pp)
2372 {
2373 pch = *pp;
2374 if (sigsetjmp(expr_env, 0)) {
2375 *pp = pch;
2376 return -1;
2377 }
2378 while (qemu_isspace(*pch))
2379 pch++;
2380 *pval = expr_sum(mon);
2381 *pp = pch;
2382 return 0;
2383 }
2384
2385 static int get_double(Monitor *mon, double *pval, const char **pp)
2386 {
2387 const char *p = *pp;
2388 char *tailp;
2389 double d;
2390
2391 d = strtod(p, &tailp);
2392 if (tailp == p) {
2393 monitor_printf(mon, "Number expected\n");
2394 return -1;
2395 }
2396 if (d != d || d - d != 0) {
2397 /* NaN or infinity */
2398 monitor_printf(mon, "Bad number\n");
2399 return -1;
2400 }
2401 *pval = d;
2402 *pp = tailp;
2403 return 0;
2404 }
2405
2406 /*
2407 * Store the command-name in cmdname, and return a pointer to
2408 * the remaining of the command string.
2409 */
2410 static const char *get_command_name(const char *cmdline,
2411 char *cmdname, size_t nlen)
2412 {
2413 size_t len;
2414 const char *p, *pstart;
2415
2416 p = cmdline;
2417 while (qemu_isspace(*p))
2418 p++;
2419 if (*p == '\0')
2420 return NULL;
2421 pstart = p;
2422 while (*p != '\0' && *p != '/' && !qemu_isspace(*p))
2423 p++;
2424 len = p - pstart;
2425 if (len > nlen - 1)
2426 len = nlen - 1;
2427 memcpy(cmdname, pstart, len);
2428 cmdname[len] = '\0';
2429 return p;
2430 }
2431
2432 /**
2433 * Read key of 'type' into 'key' and return the current
2434 * 'type' pointer.
2435 */
2436 static char *key_get_info(const char *type, char **key)
2437 {
2438 size_t len;
2439 char *p, *str;
2440
2441 if (*type == ',')
2442 type++;
2443
2444 p = strchr(type, ':');
2445 if (!p) {
2446 *key = NULL;
2447 return NULL;
2448 }
2449 len = p - type;
2450
2451 str = g_malloc(len + 1);
2452 memcpy(str, type, len);
2453 str[len] = '\0';
2454
2455 *key = str;
2456 return ++p;
2457 }
2458
2459 static int default_fmt_format = 'x';
2460 static int default_fmt_size = 4;
2461
2462 static int is_valid_option(const char *c, const char *typestr)
2463 {
2464 char option[3];
2465
2466 option[0] = '-';
2467 option[1] = *c;
2468 option[2] = '\0';
2469
2470 typestr = strstr(typestr, option);
2471 return (typestr != NULL);
2472 }
2473
2474 static const mon_cmd_t *search_dispatch_table(const mon_cmd_t *disp_table,
2475 const char *cmdname)
2476 {
2477 const mon_cmd_t *cmd;
2478
2479 for (cmd = disp_table; cmd->name != NULL; cmd++) {
2480 if (compare_cmd(cmdname, cmd->name)) {
2481 return cmd;
2482 }
2483 }
2484
2485 return NULL;
2486 }
2487
2488 static const mon_cmd_t *qmp_find_cmd(const char *cmdname)
2489 {
2490 return search_dispatch_table(qmp_cmds, cmdname);
2491 }
2492
2493 /*
2494 * Parse command name from @cmdp according to command table @table.
2495 * If blank, return NULL.
2496 * Else, if no valid command can be found, report to @mon, and return
2497 * NULL.
2498 * Else, change @cmdp to point right behind the name, and return its
2499 * command table entry.
2500 * Do not assume the return value points into @table! It doesn't when
2501 * the command is found in a sub-command table.
2502 */
2503 static const mon_cmd_t *monitor_parse_command(Monitor *mon,
2504 const char **cmdp,
2505 mon_cmd_t *table)
2506 {
2507 const char *p;
2508 const mon_cmd_t *cmd;
2509 char cmdname[256];
2510
2511 /* extract the command name */
2512 p = get_command_name(*cmdp, cmdname, sizeof(cmdname));
2513 if (!p)
2514 return NULL;
2515
2516 cmd = search_dispatch_table(table, cmdname);
2517 if (!cmd) {
2518 monitor_printf(mon, "unknown command: '%.*s'\n",
2519 (int)(p - *cmdp), *cmdp);
2520 return NULL;
2521 }
2522
2523 /* filter out following useless space */
2524 while (qemu_isspace(*p)) {
2525 p++;
2526 }
2527
2528 *cmdp = p;
2529 /* search sub command */
2530 if (cmd->sub_table != NULL && *p != '\0') {
2531 return monitor_parse_command(mon, cmdp, cmd->sub_table);
2532 }
2533
2534 return cmd;
2535 }
2536
2537 /*
2538 * Parse arguments for @cmd.
2539 * If it can't be parsed, report to @mon, and return NULL.
2540 * Else, insert command arguments into a QDict, and return it.
2541 * Note: On success, caller has to free the QDict structure.
2542 */
2543
2544 static QDict *monitor_parse_arguments(Monitor *mon,
2545 const char **endp,
2546 const mon_cmd_t *cmd)
2547 {
2548 const char *typestr;
2549 char *key;
2550 int c;
2551 const char *p = *endp;
2552 char buf[1024];
2553 QDict *qdict = qdict_new();
2554
2555 /* parse the parameters */
2556 typestr = cmd->args_type;
2557 for(;;) {
2558 typestr = key_get_info(typestr, &key);
2559 if (!typestr)
2560 break;
2561 c = *typestr;
2562 typestr++;
2563 switch(c) {
2564 case 'F':
2565 case 'B':
2566 case 's':
2567 {
2568 int ret;
2569
2570 while (qemu_isspace(*p))
2571 p++;
2572 if (*typestr == '?') {
2573 typestr++;
2574 if (*p == '\0') {
2575 /* no optional string: NULL argument */
2576 break;
2577 }
2578 }
2579 ret = get_str(buf, sizeof(buf), &p);
2580 if (ret < 0) {
2581 switch(c) {
2582 case 'F':
2583 monitor_printf(mon, "%s: filename expected\n",
2584 cmd->name);
2585 break;
2586 case 'B':
2587 monitor_printf(mon, "%s: block device name expected\n",
2588 cmd->name);
2589 break;
2590 default:
2591 monitor_printf(mon, "%s: string expected\n", cmd->name);
2592 break;
2593 }
2594 goto fail;
2595 }
2596 qdict_put(qdict, key, qstring_from_str(buf));
2597 }
2598 break;
2599 case 'O':
2600 {
2601 QemuOptsList *opts_list;
2602 QemuOpts *opts;
2603
2604 opts_list = qemu_find_opts(key);
2605 if (!opts_list || opts_list->desc->name) {
2606 goto bad_type;
2607 }
2608 while (qemu_isspace(*p)) {
2609 p++;
2610 }
2611 if (!*p)
2612 break;
2613 if (get_str(buf, sizeof(buf), &p) < 0) {
2614 goto fail;
2615 }
2616 opts = qemu_opts_parse_noisily(opts_list, buf, true);
2617 if (!opts) {
2618 goto fail;
2619 }
2620 qemu_opts_to_qdict(opts, qdict);
2621 qemu_opts_del(opts);
2622 }
2623 break;
2624 case '/':
2625 {
2626 int count, format, size;
2627
2628 while (qemu_isspace(*p))
2629 p++;
2630 if (*p == '/') {
2631 /* format found */
2632 p++;
2633 count = 1;
2634 if (qemu_isdigit(*p)) {
2635 count = 0;
2636 while (qemu_isdigit(*p)) {
2637 count = count * 10 + (*p - '0');
2638 p++;
2639 }
2640 }
2641 size = -1;
2642 format = -1;
2643 for(;;) {
2644 switch(*p) {
2645 case 'o':
2646 case 'd':
2647 case 'u':
2648 case 'x':
2649 case 'i':
2650 case 'c':
2651 format = *p++;
2652 break;
2653 case 'b':
2654 size = 1;
2655 p++;
2656 break;
2657 case 'h':
2658 size = 2;
2659 p++;
2660 break;
2661 case 'w':
2662 size = 4;
2663 p++;
2664 break;
2665 case 'g':
2666 case 'L':
2667 size = 8;
2668 p++;
2669 break;
2670 default:
2671 goto next;
2672 }
2673 }
2674 next:
2675 if (*p != '\0' && !qemu_isspace(*p)) {
2676 monitor_printf(mon, "invalid char in format: '%c'\n",
2677 *p);
2678 goto fail;
2679 }
2680 if (format < 0)
2681 format = default_fmt_format;
2682 if (format != 'i') {
2683 /* for 'i', not specifying a size gives -1 as size */
2684 if (size < 0)
2685 size = default_fmt_size;
2686 default_fmt_size = size;
2687 }
2688 default_fmt_format = format;
2689 } else {
2690 count = 1;
2691 format = default_fmt_format;
2692 if (format != 'i') {
2693 size = default_fmt_size;
2694 } else {
2695 size = -1;
2696 }
2697 }
2698 qdict_put(qdict, "count", qint_from_int(count));
2699 qdict_put(qdict, "format", qint_from_int(format));
2700 qdict_put(qdict, "size", qint_from_int(size));
2701 }
2702 break;
2703 case 'i':
2704 case 'l':
2705 case 'M':
2706 {
2707 int64_t val;
2708
2709 while (qemu_isspace(*p))
2710 p++;
2711 if (*typestr == '?' || *typestr == '.') {
2712 if (*typestr == '?') {
2713 if (*p == '\0') {
2714 typestr++;
2715 break;
2716 }
2717 } else {
2718 if (*p == '.') {
2719 p++;
2720 while (qemu_isspace(*p))
2721 p++;
2722 } else {
2723 typestr++;
2724 break;
2725 }
2726 }
2727 typestr++;
2728 }
2729 if (get_expr(mon, &val, &p))
2730 goto fail;
2731 /* Check if 'i' is greater than 32-bit */
2732 if ((c == 'i') && ((val >> 32) & 0xffffffff)) {
2733 monitor_printf(mon, "\'%s\' has failed: ", cmd->name);
2734 monitor_printf(mon, "integer is for 32-bit values\n");
2735 goto fail;
2736 } else if (c == 'M') {
2737 if (val < 0) {
2738 monitor_printf(mon, "enter a positive value\n");
2739 goto fail;
2740 }
2741 val <<= 20;
2742 }
2743 qdict_put(qdict, key, qint_from_int(val));
2744 }
2745 break;
2746 case 'o':
2747 {
2748 int64_t val;
2749 char *end;
2750
2751 while (qemu_isspace(*p)) {
2752 p++;
2753 }
2754 if (*typestr == '?') {
2755 typestr++;
2756 if (*p == '\0') {
2757 break;
2758 }
2759 }
2760 val = qemu_strtosz(p, &end);
2761 if (val < 0) {
2762 monitor_printf(mon, "invalid size\n");
2763 goto fail;
2764 }
2765 qdict_put(qdict, key, qint_from_int(val));
2766 p = end;
2767 }
2768 break;
2769 case 'T':
2770 {
2771 double val;
2772
2773 while (qemu_isspace(*p))
2774 p++;
2775 if (*typestr == '?') {
2776 typestr++;
2777 if (*p == '\0') {
2778 break;
2779 }
2780 }
2781 if (get_double(mon, &val, &p) < 0) {
2782 goto fail;
2783 }
2784 if (p[0] && p[1] == 's') {
2785 switch (*p) {
2786 case 'm':
2787 val /= 1e3; p += 2; break;
2788 case 'u':
2789 val /= 1e6; p += 2; break;
2790 case 'n':
2791 val /= 1e9; p += 2; break;
2792 }
2793 }
2794 if (*p && !qemu_isspace(*p)) {
2795 monitor_printf(mon, "Unknown unit suffix\n");
2796 goto fail;
2797 }
2798 qdict_put(qdict, key, qfloat_from_double(val));
2799 }
2800 break;
2801 case 'b':
2802 {
2803 const char *beg;
2804 bool val;
2805
2806 while (qemu_isspace(*p)) {
2807 p++;
2808 }
2809 beg = p;
2810 while (qemu_isgraph(*p)) {
2811 p++;
2812 }
2813 if (p - beg == 2 && !memcmp(beg, "on", p - beg)) {
2814 val = true;
2815 } else if (p - beg == 3 && !memcmp(beg, "off", p - beg)) {
2816 val = false;
2817 } else {
2818 monitor_printf(mon, "Expected 'on' or 'off'\n");
2819 goto fail;
2820 }
2821 qdict_put(qdict, key, qbool_from_bool(val));
2822 }
2823 break;
2824 case '-':
2825 {
2826 const char *tmp = p;
2827 int skip_key = 0;
2828 /* option */
2829
2830 c = *typestr++;
2831 if (c == '\0')
2832 goto bad_type;
2833 while (qemu_isspace(*p))
2834 p++;
2835 if (*p == '-') {
2836 p++;
2837 if(c != *p) {
2838 if(!is_valid_option(p, typestr)) {
2839
2840 monitor_printf(mon, "%s: unsupported option -%c\n",
2841 cmd->name, *p);
2842 goto fail;
2843 } else {
2844 skip_key = 1;
2845 }
2846 }
2847 if(skip_key) {
2848 p = tmp;
2849 } else {
2850 /* has option */
2851 p++;
2852 qdict_put(qdict, key, qbool_from_bool(true));
2853 }
2854 }
2855 }
2856 break;
2857 case 'S':
2858 {
2859 /* package all remaining string */
2860 int len;
2861
2862 while (qemu_isspace(*p)) {
2863 p++;
2864 }
2865 if (*typestr == '?') {
2866 typestr++;
2867 if (*p == '\0') {
2868 /* no remaining string: NULL argument */
2869 break;
2870 }
2871 }
2872 len = strlen(p);
2873 if (len <= 0) {
2874 monitor_printf(mon, "%s: string expected\n",
2875 cmd->name);
2876 goto fail;
2877 }
2878 qdict_put(qdict, key, qstring_from_str(p));
2879 p += len;
2880 }
2881 break;
2882 default:
2883 bad_type:
2884 monitor_printf(mon, "%s: unknown type '%c'\n", cmd->name, c);
2885 goto fail;
2886 }
2887 g_free(key);
2888 key = NULL;
2889 }
2890 /* check that all arguments were parsed */
2891 while (qemu_isspace(*p))
2892 p++;
2893 if (*p != '\0') {
2894 monitor_printf(mon, "%s: extraneous characters at the end of line\n",
2895 cmd->name);
2896 goto fail;
2897 }
2898
2899 return qdict;
2900
2901 fail:
2902 QDECREF(qdict);
2903 g_free(key);
2904 return NULL;
2905 }
2906
2907 static void handle_hmp_command(Monitor *mon, const char *cmdline)
2908 {
2909 QDict *qdict;
2910 const mon_cmd_t *cmd;
2911
2912 cmd = monitor_parse_command(mon, &cmdline, mon->cmd_table);
2913 if (!cmd) {
2914 return;
2915 }
2916
2917 qdict = monitor_parse_arguments(mon, &cmdline, cmd);
2918 if (!qdict) {
2919 monitor_printf(mon, "Try \"help %s\" for more information\n",
2920 cmd->name);
2921 return;
2922 }
2923
2924 cmd->mhandler.cmd(mon, qdict);
2925 QDECREF(qdict);
2926 }
2927
2928 static void cmd_completion(Monitor *mon, const char *name, const char *list)
2929 {
2930 const char *p, *pstart;
2931 char cmd[128];
2932 int len;
2933
2934 p = list;
2935 for(;;) {
2936 pstart = p;
2937 p = strchr(p, '|');
2938 if (!p)
2939 p = pstart + strlen(pstart);
2940 len = p - pstart;
2941 if (len > sizeof(cmd) - 2)
2942 len = sizeof(cmd) - 2;
2943 memcpy(cmd, pstart, len);
2944 cmd[len] = '\0';
2945 if (name[0] == '\0' || !strncmp(name, cmd, strlen(name))) {
2946 readline_add_completion(mon->rs, cmd);
2947 }
2948 if (*p == '\0')
2949 break;
2950 p++;
2951 }
2952 }
2953
2954 static void file_completion(Monitor *mon, const char *input)
2955 {
2956 DIR *ffs;
2957 struct dirent *d;
2958 char path[1024];
2959 char file[1024], file_prefix[1024];
2960 int input_path_len;
2961 const char *p;
2962
2963 p = strrchr(input, '/');
2964 if (!p) {
2965 input_path_len = 0;
2966 pstrcpy(file_prefix, sizeof(file_prefix), input);
2967 pstrcpy(path, sizeof(path), ".");
2968 } else {
2969 input_path_len = p - input + 1;
2970 memcpy(path, input, input_path_len);
2971 if (input_path_len > sizeof(path) - 1)
2972 input_path_len = sizeof(path) - 1;
2973 path[input_path_len] = '\0';
2974 pstrcpy(file_prefix, sizeof(file_prefix), p + 1);
2975 }
2976
2977 ffs = opendir(path);
2978 if (!ffs)
2979 return;
2980 for(;;) {
2981 struct stat sb;
2982 d = readdir(ffs);
2983 if (!d)
2984 break;
2985
2986 if (strcmp(d->d_name, ".") == 0 || strcmp(d->d_name, "..") == 0) {
2987 continue;
2988 }
2989
2990 if (strstart(d->d_name, file_prefix, NULL)) {
2991 memcpy(file, input, input_path_len);
2992 if (input_path_len < sizeof(file))
2993 pstrcpy(file + input_path_len, sizeof(file) - input_path_len,
2994 d->d_name);
2995 /* stat the file to find out if it's a directory.
2996 * In that case add a slash to speed up typing long paths
2997 */
2998 if (stat(file, &sb) == 0 && S_ISDIR(sb.st_mode)) {
2999 pstrcat(file, sizeof(file), "/");
3000 }
3001 readline_add_completion(mon->rs, file);
3002 }
3003 }
3004 closedir(ffs);
3005 }
3006
3007 static const char *next_arg_type(const char *typestr)
3008 {
3009 const char *p = strchr(typestr, ':');
3010 return (p != NULL ? ++p : typestr);
3011 }
3012
3013 static void add_completion_option(ReadLineState *rs, const char *str,
3014 const char *option)
3015 {
3016 if (!str || !option) {
3017 return;
3018 }
3019 if (!strncmp(option, str, strlen(str))) {
3020 readline_add_completion(rs, option);
3021 }
3022 }
3023
3024 void chardev_add_completion(ReadLineState *rs, int nb_args, const char *str)
3025 {
3026 size_t len;
3027 ChardevBackendInfoList *list, *start;
3028
3029 if (nb_args != 2) {
3030 return;
3031 }
3032 len = strlen(str);
3033 readline_set_completion_index(rs, len);
3034
3035 start = list = qmp_query_chardev_backends(NULL);
3036 while (list) {
3037 const char *chr_name = list->value->name;
3038
3039 if (!strncmp(chr_name, str, len)) {
3040 readline_add_completion(rs, chr_name);
3041 }
3042 list = list->next;
3043 }
3044 qapi_free_ChardevBackendInfoList(start);
3045 }
3046
3047 void netdev_add_completion(ReadLineState *rs, int nb_args, const char *str)
3048 {
3049 size_t len;
3050 int i;
3051
3052 if (nb_args != 2) {
3053 return;
3054 }
3055 len = strlen(str);
3056 readline_set_completion_index(rs, len);
3057 for (i = 0; NetClientOptionsKind_lookup[i]; i++) {
3058 add_completion_option(rs, str, NetClientOptionsKind_lookup[i]);
3059 }
3060 }
3061
3062 void device_add_completion(ReadLineState *rs, int nb_args, const char *str)
3063 {
3064 GSList *list, *elt;
3065 size_t len;
3066
3067 if (nb_args != 2) {
3068 return;
3069 }
3070
3071 len = strlen(str);
3072 readline_set_completion_index(rs, len);
3073 list = elt = object_class_get_list(TYPE_DEVICE, false);
3074 while (elt) {
3075 const char *name;
3076 DeviceClass *dc = OBJECT_CLASS_CHECK(DeviceClass, elt->data,
3077 TYPE_DEVICE);
3078 name = object_class_get_name(OBJECT_CLASS(dc));
3079
3080 if (!dc->cannot_instantiate_with_device_add_yet
3081 && !strncmp(name, str, len)) {
3082 readline_add_completion(rs, name);
3083 }
3084 elt = elt->next;
3085 }
3086 g_slist_free(list);
3087 }
3088
3089 void object_add_completion(ReadLineState *rs, int nb_args, const char *str)
3090 {
3091 GSList *list, *elt;
3092 size_t len;
3093
3094 if (nb_args != 2) {
3095 return;
3096 }
3097
3098 len = strlen(str);
3099 readline_set_completion_index(rs, len);
3100 list = elt = object_class_get_list(TYPE_USER_CREATABLE, false);
3101 while (elt) {
3102 const char *name;
3103
3104 name = object_class_get_name(OBJECT_CLASS(elt->data));
3105 if (!strncmp(name, str, len) && strcmp(name, TYPE_USER_CREATABLE)) {
3106 readline_add_completion(rs, name);
3107 }
3108 elt = elt->next;
3109 }
3110 g_slist_free(list);
3111 }
3112
3113 static void peripheral_device_del_completion(ReadLineState *rs,
3114 const char *str, size_t len)
3115 {
3116 Object *peripheral = container_get(qdev_get_machine(), "/peripheral");
3117 GSList *list, *item;
3118
3119 list = qdev_build_hotpluggable_device_list(peripheral);
3120 if (!list) {
3121 return;
3122 }
3123
3124 for (item = list; item; item = g_slist_next(item)) {
3125 DeviceState *dev = item->data;
3126
3127 if (dev->id && !strncmp(str, dev->id, len)) {
3128 readline_add_completion(rs, dev->id);
3129 }
3130 }
3131
3132 g_slist_free(list);
3133 }
3134
3135 void chardev_remove_completion(ReadLineState *rs, int nb_args, const char *str)
3136 {
3137 size_t len;
3138 ChardevInfoList *list, *start;
3139
3140 if (nb_args != 2) {
3141 return;
3142 }
3143 len = strlen(str);
3144 readline_set_completion_index(rs, len);
3145
3146 start = list = qmp_query_chardev(NULL);
3147 while (list) {
3148 ChardevInfo *chr = list->value;
3149
3150 if (!strncmp(chr->label, str, len)) {
3151 readline_add_completion(rs, chr->label);
3152 }
3153 list = list->next;
3154 }
3155 qapi_free_ChardevInfoList(start);
3156 }
3157
3158 static void ringbuf_completion(ReadLineState *rs, const char *str)
3159 {
3160 size_t len;
3161 ChardevInfoList *list, *start;
3162
3163 len = strlen(str);
3164 readline_set_completion_index(rs, len);
3165
3166 start = list = qmp_query_chardev(NULL);
3167 while (list) {
3168 ChardevInfo *chr_info = list->value;
3169
3170 if (!strncmp(chr_info->label, str, len)) {
3171 CharDriverState *chr = qemu_chr_find(chr_info->label);
3172 if (chr && chr_is_ringbuf(chr)) {
3173 readline_add_completion(rs, chr_info->label);
3174 }
3175 }
3176 list = list->next;
3177 }
3178 qapi_free_ChardevInfoList(start);
3179 }
3180
3181 void ringbuf_write_completion(ReadLineState *rs, int nb_args, const char *str)
3182 {
3183 if (nb_args != 2) {
3184 return;
3185 }
3186 ringbuf_completion(rs, str);
3187 }
3188
3189 void device_del_completion(ReadLineState *rs, int nb_args, const char *str)
3190 {
3191 size_t len;
3192
3193 if (nb_args != 2) {
3194 return;
3195 }
3196
3197 len = strlen(str);
3198 readline_set_completion_index(rs, len);
3199 peripheral_device_del_completion(rs, str, len);
3200 }
3201
3202 void object_del_completion(ReadLineState *rs, int nb_args, const char *str)
3203 {
3204 ObjectPropertyInfoList *list, *start;
3205 size_t len;
3206
3207 if (nb_args != 2) {
3208 return;
3209 }
3210 len = strlen(str);
3211 readline_set_completion_index(rs, len);
3212
3213 start = list = qmp_qom_list("/objects", NULL);
3214 while (list) {
3215 ObjectPropertyInfo *info = list->value;
3216
3217 if (!strncmp(info->type, "child<", 5)
3218 && !strncmp(info->name, str, len)) {
3219 readline_add_completion(rs, info->name);
3220 }
3221 list = list->next;
3222 }
3223 qapi_free_ObjectPropertyInfoList(start);
3224 }
3225
3226 void sendkey_completion(ReadLineState *rs, int nb_args, const char *str)
3227 {
3228 int i;
3229 char *sep;
3230 size_t len;
3231
3232 if (nb_args != 2) {
3233 return;
3234 }
3235 sep = strrchr(str, '-');
3236 if (sep) {
3237 str = sep + 1;
3238 }
3239 len = strlen(str);
3240 readline_set_completion_index(rs, len);
3241 for (i = 0; i < Q_KEY_CODE__MAX; i++) {
3242 if (!strncmp(str, QKeyCode_lookup[i], len)) {
3243 readline_add_completion(rs, QKeyCode_lookup[i]);
3244 }
3245 }
3246 }
3247
3248 void set_link_completion(ReadLineState *rs, int nb_args, const char *str)
3249 {
3250 size_t len;
3251
3252 len = strlen(str);
3253 readline_set_completion_index(rs, len);
3254 if (nb_args == 2) {
3255 NetClientState *ncs[MAX_QUEUE_NUM];
3256 int count, i;
3257 count = qemu_find_net_clients_except(NULL, ncs,
3258 NET_CLIENT_OPTIONS_KIND_NONE,
3259 MAX_QUEUE_NUM);
3260 for (i = 0; i < MIN(count, MAX_QUEUE_NUM); i++) {
3261 const char *name = ncs[i]->name;
3262 if (!strncmp(str, name, len)) {
3263 readline_add_completion(rs, name);
3264 }
3265 }
3266 } else if (nb_args == 3) {
3267 add_completion_option(rs, str, "on");
3268 add_completion_option(rs, str, "off");
3269 }
3270 }
3271
3272 void netdev_del_completion(ReadLineState *rs, int nb_args, const char *str)
3273 {
3274 int len, count, i;
3275 NetClientState *ncs[MAX_QUEUE_NUM];
3276
3277 if (nb_args != 2) {
3278 return;
3279 }
3280
3281 len = strlen(str);
3282 readline_set_completion_index(rs, len);
3283 count = qemu_find_net_clients_except(NULL, ncs, NET_CLIENT_OPTIONS_KIND_NIC,
3284 MAX_QUEUE_NUM);
3285 for (i = 0; i < MIN(count, MAX_QUEUE_NUM); i++) {
3286 QemuOpts *opts;
3287 const char *name = ncs[i]->name;
3288 if (strncmp(str, name, len)) {
3289 continue;
3290 }
3291 opts = qemu_opts_find(qemu_find_opts_err("netdev", NULL), name);
3292 if (opts) {
3293 readline_add_completion(rs, name);
3294 }
3295 }
3296 }
3297
3298 void trace_event_completion(ReadLineState *rs, int nb_args, const char *str)
3299 {
3300 size_t len;
3301
3302 len = strlen(str);
3303 readline_set_completion_index(rs, len);
3304 if (nb_args == 2) {
3305 TraceEventID id;
3306 for (id = 0; id < trace_event_count(); id++) {
3307 const char *event_name = trace_event_get_name(trace_event_id(id));
3308 if (!strncmp(str, event_name, len)) {
3309 readline_add_completion(rs, event_name);
3310 }
3311 }
3312 } else if (nb_args == 3) {
3313 add_completion_option(rs, str, "on");
3314 add_completion_option(rs, str, "off");
3315 }
3316 }
3317
3318 void watchdog_action_completion(ReadLineState *rs, int nb_args, const char *str)
3319 {
3320 int i;
3321
3322 if (nb_args != 2) {
3323 return;
3324 }
3325 readline_set_completion_index(rs, strlen(str));
3326 for (i = 0; WatchdogExpirationAction_lookup[i]; i++) {
3327 add_completion_option(rs, str, WatchdogExpirationAction_lookup[i]);
3328 }
3329 }
3330
3331 void migrate_set_capability_completion(ReadLineState *rs, int nb_args,
3332 const char *str)
3333 {
3334 size_t len;
3335
3336 len = strlen(str);
3337 readline_set_completion_index(rs, len);
3338 if (nb_args == 2) {
3339 int i;
3340 for (i = 0; i < MIGRATION_CAPABILITY__MAX; i++) {
3341 const char *name = MigrationCapability_lookup[i];
3342 if (!strncmp(str, name, len)) {
3343 readline_add_completion(rs, name);
3344 }
3345 }
3346 } else if (nb_args == 3) {
3347 add_completion_option(rs, str, "on");
3348 add_completion_option(rs, str, "off");
3349 }
3350 }
3351
3352 void migrate_set_parameter_completion(ReadLineState *rs, int nb_args,
3353 const char *str)
3354 {
3355 size_t len;
3356
3357 len = strlen(str);
3358 readline_set_completion_index(rs, len);
3359 if (nb_args == 2) {
3360 int i;
3361 for (i = 0; i < MIGRATION_PARAMETER__MAX; i++) {
3362 const char *name = MigrationParameter_lookup[i];
3363 if (!strncmp(str, name, len)) {
3364 readline_add_completion(rs, name);
3365 }
3366 }
3367 }
3368 }
3369
3370 void host_net_add_completion(ReadLineState *rs, int nb_args, const char *str)
3371 {
3372 int i;
3373 size_t len;
3374 if (nb_args != 2) {
3375 return;
3376 }
3377 len = strlen(str);
3378 readline_set_completion_index(rs, len);
3379 for (i = 0; host_net_devices[i]; i++) {
3380 if (!strncmp(host_net_devices[i], str, len)) {
3381 readline_add_completion(rs, host_net_devices[i]);
3382 }
3383 }
3384 }
3385
3386 void host_net_remove_completion(ReadLineState *rs, int nb_args, const char *str)
3387 {
3388 NetClientState *ncs[MAX_QUEUE_NUM];
3389 int count, i, len;
3390
3391 len = strlen(str);
3392 readline_set_completion_index(rs, len);
3393 if (nb_args == 2) {
3394 count = qemu_find_net_clients_except(NULL, ncs,
3395 NET_CLIENT_OPTIONS_KIND_NONE,
3396 MAX_QUEUE_NUM);
3397 for (i = 0; i < MIN(count, MAX_QUEUE_NUM); i++) {
3398 int id;
3399 char name[16];
3400
3401 if (net_hub_id_for_client(ncs[i], &id)) {
3402 continue;
3403 }
3404 snprintf(name, sizeof(name), "%d", id);
3405 if (!strncmp(str, name, len)) {
3406 readline_add_completion(rs, name);
3407 }
3408 }
3409 return;
3410 } else if (nb_args == 3) {
3411 count = qemu_find_net_clients_except(NULL, ncs,
3412 NET_CLIENT_OPTIONS_KIND_NIC,
3413 MAX_QUEUE_NUM);
3414 for (i = 0; i < MIN(count, MAX_QUEUE_NUM); i++) {
3415 int id;
3416 const char *name;
3417
3418 if (ncs[i]->info->type == NET_CLIENT_OPTIONS_KIND_HUBPORT ||
3419 net_hub_id_for_client(ncs[i], &id)) {
3420 continue;
3421 }
3422 name = ncs[i]->name;
3423 if (!strncmp(str, name, len)) {
3424 readline_add_completion(rs, name);
3425 }
3426 }
3427 return;
3428 }
3429 }
3430
3431 static void vm_completion(ReadLineState *rs, const char *str)
3432 {
3433 size_t len;
3434 BlockDriverState *bs;
3435 BdrvNextIterator it;
3436
3437 len = strlen(str);
3438 readline_set_completion_index(rs, len);
3439
3440 for (bs = bdrv_first(&it); bs; bs = bdrv_next(&it)) {
3441 SnapshotInfoList *snapshots, *snapshot;
3442 AioContext *ctx = bdrv_get_aio_context(bs);
3443 bool ok = false;
3444
3445 aio_context_acquire(ctx);
3446 if (bdrv_can_snapshot(bs)) {
3447 ok = bdrv_query_snapshot_info_list(bs, &snapshots, NULL) == 0;
3448 }
3449 aio_context_release(ctx);
3450 if (!ok) {
3451 continue;
3452 }
3453
3454 snapshot = snapshots;
3455 while (snapshot) {
3456 char *completion = snapshot->value->name;
3457 if (!strncmp(str, completion, len)) {
3458 readline_add_completion(rs, completion);
3459 }
3460 completion = snapshot->value->id;
3461 if (!strncmp(str, completion, len)) {
3462 readline_add_completion(rs, completion);
3463 }
3464 snapshot = snapshot->next;
3465 }
3466 qapi_free_SnapshotInfoList(snapshots);
3467 }
3468
3469 }
3470
3471 void delvm_completion(ReadLineState *rs, int nb_args, const char *str)
3472 {
3473 if (nb_args == 2) {
3474 vm_completion(rs, str);
3475 }
3476 }
3477
3478 void loadvm_completion(ReadLineState *rs, int nb_args, const char *str)
3479 {
3480 if (nb_args == 2) {
3481 vm_completion(rs, str);
3482 }
3483 }
3484
3485 static void monitor_find_completion_by_table(Monitor *mon,
3486 const mon_cmd_t *cmd_table,
3487 char **args,
3488 int nb_args)
3489 {
3490 const char *cmdname;
3491 int i;
3492 const char *ptype, *str, *name;
3493 const mon_cmd_t *cmd;
3494 BlockBackend *blk = NULL;
3495
3496 if (nb_args <= 1) {
3497 /* command completion */
3498 if (nb_args == 0)
3499 cmdname = "";
3500 else
3501 cmdname = args[0];
3502 readline_set_completion_index(mon->rs, strlen(cmdname));
3503 for (cmd = cmd_table; cmd->name != NULL; cmd++) {
3504 cmd_completion(mon, cmdname, cmd->name);
3505 }
3506 } else {
3507 /* find the command */
3508 for (cmd = cmd_table; cmd->name != NULL; cmd++) {
3509 if (compare_cmd(args[0], cmd->name)) {
3510 break;
3511 }
3512 }
3513 if (!cmd->name) {
3514 return;
3515 }
3516
3517 if (cmd->sub_table) {
3518 /* do the job again */
3519 monitor_find_completion_by_table(mon, cmd->sub_table,
3520 &args[1], nb_args - 1);
3521 return;
3522 }
3523 if (cmd->command_completion) {
3524 cmd->command_completion(mon->rs, nb_args, args[nb_args - 1]);
3525 return;
3526 }
3527
3528 ptype = next_arg_type(cmd->args_type);
3529 for(i = 0; i < nb_args - 2; i++) {
3530 if (*ptype != '\0') {
3531 ptype = next_arg_type(ptype);
3532 while (*ptype == '?')
3533 ptype = next_arg_type(ptype);
3534 }
3535 }
3536 str = args[nb_args - 1];
3537 while (*ptype == '-' && ptype[1] != '\0') {
3538 ptype = next_arg_type(ptype);
3539 }
3540 switch(*ptype) {
3541 case 'F':
3542 /* file completion */
3543 readline_set_completion_index(mon->rs, strlen(str));
3544 file_completion(mon, str);
3545 break;
3546 case 'B':
3547 /* block device name completion */
3548 readline_set_completion_index(mon->rs, strlen(str));
3549 while ((blk = blk_next(blk)) != NULL) {
3550 name = blk_name(blk);
3551 if (str[0] == '\0' ||
3552 !strncmp(name, str, strlen(str))) {
3553 readline_add_completion(mon->rs, name);
3554 }
3555 }
3556 break;
3557 case 's':
3558 case 'S':
3559 if (!strcmp(cmd->name, "help|?")) {
3560 monitor_find_completion_by_table(mon, cmd_table,
3561 &args[1], nb_args - 1);
3562 }
3563 break;
3564 default:
3565 break;
3566 }
3567 }
3568 }
3569
3570 static void monitor_find_completion(void *opaque,
3571 const char *cmdline)
3572 {
3573 Monitor *mon = opaque;
3574 char *args[MAX_ARGS];
3575 int nb_args, len;
3576
3577 /* 1. parse the cmdline */
3578 if (parse_cmdline(cmdline, &nb_args, args) < 0) {
3579 return;
3580 }
3581
3582 /* if the line ends with a space, it means we want to complete the
3583 next arg */
3584 len = strlen(cmdline);
3585 if (len > 0 && qemu_isspace(cmdline[len - 1])) {
3586 if (nb_args >= MAX_ARGS) {
3587 goto cleanup;
3588 }
3589 args[nb_args++] = g_strdup("");
3590 }
3591
3592 /* 2. auto complete according to args */
3593 monitor_find_completion_by_table(mon, mon->cmd_table, args, nb_args);
3594
3595 cleanup:
3596 free_cmdline_args(args, nb_args);
3597 }
3598
3599 static int monitor_can_read(void *opaque)
3600 {
3601 Monitor *mon = opaque;
3602
3603 return (mon->suspend_cnt == 0) ? 1 : 0;
3604 }
3605
3606 static bool invalid_qmp_mode(const Monitor *mon, const mon_cmd_t *cmd,
3607 Error **errp)
3608 {
3609 bool is_cap = cmd->mhandler.cmd_new == qmp_capabilities;
3610
3611 if (is_cap && mon->qmp.in_command_mode) {
3612 error_set(errp, ERROR_CLASS_COMMAND_NOT_FOUND,
3613 "Capabilities negotiation is already complete, command "
3614 "'%s' ignored", cmd->name);
3615 return true;
3616 }
3617 if (!is_cap && !mon->qmp.in_command_mode) {
3618 error_set(errp, ERROR_CLASS_COMMAND_NOT_FOUND,
3619 "Expecting capabilities negotiation with "
3620 "'qmp_capabilities' before command '%s'", cmd->name);
3621 return true;
3622 }
3623 return false;
3624 }
3625
3626 /*
3627 * Argument validation rules:
3628 *
3629 * 1. The argument must exist in cmd_args qdict
3630 * 2. The argument type must be the expected one
3631 *
3632 * Special case: If the argument doesn't exist in cmd_args and
3633 * the QMP_ACCEPT_UNKNOWNS flag is set, then the
3634 * checking is skipped for it.
3635 */
3636 static void check_client_args_type(const QDict *client_args,
3637 const QDict *cmd_args, int flags,
3638 Error **errp)
3639 {
3640 const QDictEntry *ent;
3641
3642 for (ent = qdict_first(client_args); ent;ent = qdict_next(client_args,ent)){
3643 QObject *obj;
3644 QString *arg_type;
3645 const QObject *client_arg = qdict_entry_value(ent);
3646 const char *client_arg_name = qdict_entry_key(ent);
3647
3648 obj = qdict_get(cmd_args, client_arg_name);
3649 if (!obj) {
3650 if (flags & QMP_ACCEPT_UNKNOWNS) {
3651 /* handler accepts unknowns */
3652 continue;
3653 }
3654 /* client arg doesn't exist */
3655 error_setg(errp, QERR_INVALID_PARAMETER, client_arg_name);
3656 return;
3657 }
3658
3659 arg_type = qobject_to_qstring(obj);
3660 assert(arg_type != NULL);
3661
3662 /* check if argument's type is correct */
3663 switch (qstring_get_str(arg_type)[0]) {
3664 case 'F':
3665 case 'B':
3666 case 's':
3667 if (qobject_type(client_arg) != QTYPE_QSTRING) {
3668 error_setg(errp, QERR_INVALID_PARAMETER_TYPE,
3669 client_arg_name, "string");
3670 return;
3671 }
3672 break;
3673 case 'i':
3674 case 'l':
3675 case 'M':
3676 case 'o':
3677 if (qobject_type(client_arg) != QTYPE_QINT) {
3678 error_setg(errp, QERR_INVALID_PARAMETER_TYPE,
3679 client_arg_name, "int");
3680 return;
3681 }
3682 break;
3683 case 'T':
3684 if (qobject_type(client_arg) != QTYPE_QINT &&
3685 qobject_type(client_arg) != QTYPE_QFLOAT) {
3686 error_setg(errp, QERR_INVALID_PARAMETER_TYPE,
3687 client_arg_name, "number");
3688 return;
3689 }
3690 break;
3691 case 'b':
3692 case '-':
3693 if (qobject_type(client_arg) != QTYPE_QBOOL) {
3694 error_setg(errp, QERR_INVALID_PARAMETER_TYPE,
3695 client_arg_name, "bool");
3696 return;
3697 }
3698 break;
3699 case 'O':
3700 assert(flags & QMP_ACCEPT_UNKNOWNS);
3701 break;
3702 case 'q':
3703 /* Any QObject can be passed. */
3704 break;
3705 case '/':
3706 case '.':
3707 /*
3708 * These types are not supported by QMP and thus are not
3709 * handled here. Fall through.
3710 */
3711 default:
3712 abort();
3713 }
3714 }
3715 }
3716
3717 /*
3718 * - Check if the client has passed all mandatory args
3719 * - Set special flags for argument validation
3720 */
3721 static void check_mandatory_args(const QDict *cmd_args,
3722 const QDict *client_args, int *flags,
3723 Error **errp)
3724 {
3725 const QDictEntry *ent;
3726
3727 for (ent = qdict_first(cmd_args); ent; ent = qdict_next(cmd_args, ent)) {
3728 const char *cmd_arg_name = qdict_entry_key(ent);
3729 QString *type = qobject_to_qstring(qdict_entry_value(ent));
3730 assert(type != NULL);
3731
3732 if (qstring_get_str(type)[0] == 'O') {
3733 assert((*flags & QMP_ACCEPT_UNKNOWNS) == 0);
3734 *flags |= QMP_ACCEPT_UNKNOWNS;
3735 } else if (qstring_get_str(type)[0] != '-' &&
3736 qstring_get_str(type)[1] != '?' &&
3737 !qdict_haskey(client_args, cmd_arg_name)) {
3738 error_setg(errp, QERR_MISSING_PARAMETER, cmd_arg_name);
3739 return;
3740 }
3741 }
3742 }
3743
3744 static QDict *qdict_from_args_type(const char *args_type)
3745 {
3746 int i;
3747 QDict *qdict;
3748 QString *key, *type, *cur_qs;
3749
3750 assert(args_type != NULL);
3751
3752 qdict = qdict_new();
3753
3754 if (args_type == NULL || args_type[0] == '\0') {
3755 /* no args, empty qdict */
3756 goto out;
3757 }
3758
3759 key = qstring_new();
3760 type = qstring_new();
3761
3762 cur_qs = key;
3763
3764 for (i = 0;; i++) {
3765 switch (args_type[i]) {
3766 case ',':
3767 case '\0':
3768 qdict_put(qdict, qstring_get_str(key), type);
3769 QDECREF(key);
3770 if (args_type[i] == '\0') {
3771 goto out;
3772 }
3773 type = qstring_new(); /* qdict has ref */
3774 cur_qs = key = qstring_new();
3775 break;
3776 case ':':
3777 cur_qs = type;
3778 break;
3779 default:
3780 qstring_append_chr(cur_qs, args_type[i]);
3781 break;
3782 }
3783 }
3784
3785 out:
3786 return qdict;
3787 }
3788
3789 /*
3790 * Client argument checking rules:
3791 *
3792 * 1. Client must provide all mandatory arguments
3793 * 2. Each argument provided by the client must be expected
3794 * 3. Each argument provided by the client must have the type expected
3795 * by the command
3796 */
3797 static void qmp_check_client_args(const mon_cmd_t *cmd, QDict *client_args,
3798 Error **errp)
3799 {
3800 Error *err = NULL;
3801 int flags;
3802 QDict *cmd_args;
3803
3804 cmd_args = qdict_from_args_type(cmd->args_type);
3805
3806 flags = 0;
3807 check_mandatory_args(cmd_args, client_args, &flags, &err);
3808 if (err) {
3809 goto out;
3810 }
3811
3812 check_client_args_type(client_args, cmd_args, flags, &err);
3813
3814 out:
3815 error_propagate(errp, err);
3816 QDECREF(cmd_args);
3817 }
3818
3819 /*
3820 * Input object checking rules
3821 *
3822 * 1. Input object must be a dict
3823 * 2. The "execute" key must exist
3824 * 3. The "execute" key must be a string
3825 * 4. If the "arguments" key exists, it must be a dict
3826 * 5. If the "id" key exists, it can be anything (ie. json-value)
3827 * 6. Any argument not listed above is considered invalid
3828 */
3829 static QDict *qmp_check_input_obj(QObject *input_obj, Error **errp)
3830 {
3831 const QDictEntry *ent;
3832 int has_exec_key = 0;
3833 QDict *input_dict;
3834
3835 if (qobject_type(input_obj) != QTYPE_QDICT) {
3836 error_setg(errp, QERR_QMP_BAD_INPUT_OBJECT, "object");
3837 return NULL;
3838 }
3839
3840 input_dict = qobject_to_qdict(input_obj);
3841
3842 for (ent = qdict_first(input_dict); ent; ent = qdict_next(input_dict, ent)){
3843 const char *arg_name = qdict_entry_key(ent);
3844 const QObject *arg_obj = qdict_entry_value(ent);
3845
3846 if (!strcmp(arg_name, "execute")) {
3847 if (qobject_type(arg_obj) != QTYPE_QSTRING) {
3848 error_setg(errp, QERR_QMP_BAD_INPUT_OBJECT_MEMBER,
3849 "execute", "string");
3850 return NULL;
3851 }
3852 has_exec_key = 1;
3853 } else if (!strcmp(arg_name, "arguments")) {
3854 if (qobject_type(arg_obj) != QTYPE_QDICT) {
3855 error_setg(errp, QERR_QMP_BAD_INPUT_OBJECT_MEMBER,
3856 "arguments", "object");
3857 return NULL;
3858 }
3859 } else if (!strcmp(arg_name, "id")) {
3860 /* Any string is acceptable as "id", so nothing to check */
3861 } else {
3862 error_setg(errp, QERR_QMP_EXTRA_MEMBER, arg_name);
3863 return NULL;
3864 }
3865 }
3866
3867 if (!has_exec_key) {
3868 error_setg(errp, QERR_QMP_BAD_INPUT_OBJECT, "execute");
3869 return NULL;
3870 }
3871
3872 return input_dict;
3873 }
3874
3875 static void handle_qmp_command(JSONMessageParser *parser, GQueue *tokens)
3876 {
3877 Error *local_err = NULL;
3878 QObject *obj, *data;
3879 QDict *input, *args;
3880 const mon_cmd_t *cmd;
3881 const char *cmd_name;
3882 Monitor *mon = cur_mon;
3883
3884 args = input = NULL;
3885 data = NULL;
3886
3887 obj = json_parser_parse(tokens, NULL);
3888 if (!obj) {
3889 // FIXME: should be triggered in json_parser_parse()
3890 error_setg(&local_err, QERR_JSON_PARSING);
3891 goto err_out;
3892 }
3893
3894 input = qmp_check_input_obj(obj, &local_err);
3895 if (!input) {
3896 qobject_decref(obj);
3897 goto err_out;
3898 }
3899
3900 mon->qmp.id = qdict_get(input, "id");
3901 qobject_incref(mon->qmp.id);
3902
3903 cmd_name = qdict_get_str(input, "execute");
3904 trace_handle_qmp_command(mon, cmd_name);
3905 cmd = qmp_find_cmd(cmd_name);
3906 if (!cmd) {
3907 error_set(&local_err, ERROR_CLASS_COMMAND_NOT_FOUND,
3908 "The command %s has not been found", cmd_name);
3909 goto err_out;
3910 }
3911 if (invalid_qmp_mode(mon, cmd, &local_err)) {
3912 goto err_out;
3913 }
3914
3915 obj = qdict_get(input, "arguments");
3916 if (!obj) {
3917 args = qdict_new();
3918 } else {
3919 args = qobject_to_qdict(obj);
3920 QINCREF(args);
3921 }
3922
3923 qmp_check_client_args(cmd, args, &local_err);
3924 if (local_err) {
3925 goto err_out;
3926 }
3927
3928 cmd->mhandler.cmd_new(args, &data, &local_err);
3929
3930 err_out:
3931 monitor_protocol_emitter(mon, data, local_err);
3932 qobject_decref(data);
3933 error_free(local_err);
3934 QDECREF(input);
3935 QDECREF(args);
3936 }
3937
3938 static void monitor_qmp_read(void *opaque, const uint8_t *buf, int size)
3939 {
3940 Monitor *old_mon = cur_mon;
3941
3942 cur_mon = opaque;
3943
3944 json_message_parser_feed(&cur_mon->qmp.parser, (const char *) buf, size);
3945
3946 cur_mon = old_mon;
3947 }
3948
3949 static void monitor_read(void *opaque, const uint8_t *buf, int size)
3950 {
3951 Monitor *old_mon = cur_mon;
3952 int i;
3953
3954 cur_mon = opaque;
3955
3956 if (cur_mon->rs) {
3957 for (i = 0; i < size; i++)
3958 readline_handle_byte(cur_mon->rs, buf[i]);
3959 } else {
3960 if (size == 0 || buf[size - 1] != 0)
3961 monitor_printf(cur_mon, "corrupted command\n");
3962 else
3963 handle_hmp_command(cur_mon, (char *)buf);
3964 }
3965
3966 cur_mon = old_mon;
3967 }
3968
3969 static void monitor_command_cb(void *opaque, const char *cmdline,
3970 void *readline_opaque)
3971 {
3972 Monitor *mon = opaque;
3973
3974 monitor_suspend(mon);
3975 handle_hmp_command(mon, cmdline);
3976 monitor_resume(mon);
3977 }
3978
3979 int monitor_suspend(Monitor *mon)
3980 {
3981 if (!mon->rs)
3982 return -ENOTTY;
3983 mon->suspend_cnt++;
3984 return 0;
3985 }
3986
3987 void monitor_resume(Monitor *mon)
3988 {
3989 if (!mon->rs)
3990 return;
3991 if (--mon->suspend_cnt == 0)
3992 readline_show_prompt(mon->rs);
3993 }
3994
3995 static QObject *get_qmp_greeting(void)
3996 {
3997 QObject *ver = NULL;
3998
3999 qmp_marshal_query_version(NULL, &ver, NULL);
4000 return qobject_from_jsonf("{'QMP':{'version': %p,'capabilities': []}}",ver);
4001 }
4002
4003 static void monitor_qmp_event(void *opaque, int event)
4004 {
4005 QObject *data;
4006 Monitor *mon = opaque;
4007
4008 switch (event) {
4009 case CHR_EVENT_OPENED:
4010 mon->qmp.in_command_mode = false;
4011 data = get_qmp_greeting();
4012 monitor_json_emitter(mon, data);
4013 qobject_decref(data);
4014 mon_refcount++;
4015 break;
4016 case CHR_EVENT_CLOSED:
4017 json_message_parser_destroy(&mon->qmp.parser);
4018 json_message_parser_init(&mon->qmp.parser, handle_qmp_command);
4019 mon_refcount--;
4020 monitor_fdsets_cleanup();
4021 break;
4022 }
4023 }
4024
4025 static void monitor_event(void *opaque, int event)
4026 {
4027 Monitor *mon = opaque;
4028
4029 switch (event) {
4030 case CHR_EVENT_MUX_IN:
4031 qemu_mutex_lock(&mon->out_lock);
4032 mon->mux_out = 0;
4033 qemu_mutex_unlock(&mon->out_lock);
4034 if (mon->reset_seen) {
4035 readline_restart(mon->rs);
4036 monitor_resume(mon);
4037 monitor_flush(mon);
4038 } else {
4039 mon->suspend_cnt = 0;
4040 }
4041 break;
4042
4043 case CHR_EVENT_MUX_OUT:
4044 if (mon->reset_seen) {
4045 if (mon->suspend_cnt == 0) {
4046 monitor_printf(mon, "\n");
4047 }
4048 monitor_flush(mon);
4049 monitor_suspend(mon);
4050 } else {
4051 mon->suspend_cnt++;
4052 }
4053 qemu_mutex_lock(&mon->out_lock);
4054 mon->mux_out = 1;
4055 qemu_mutex_unlock(&mon->out_lock);
4056 break;
4057
4058 case CHR_EVENT_OPENED:
4059 monitor_printf(mon, "QEMU %s monitor - type 'help' for more "
4060 "information\n", QEMU_VERSION);
4061 if (!mon->mux_out) {
4062 readline_restart(mon->rs);
4063 readline_show_prompt(mon->rs);
4064 }
4065 mon->reset_seen = 1;
4066 mon_refcount++;
4067 break;
4068
4069 case CHR_EVENT_CLOSED:
4070 mon_refcount--;
4071 monitor_fdsets_cleanup();
4072 break;
4073 }
4074 }
4075
4076 static int
4077 compare_mon_cmd(const void *a, const void *b)
4078 {
4079 return strcmp(((const mon_cmd_t *)a)->name,
4080 ((const mon_cmd_t *)b)->name);
4081 }
4082
4083 static void sortcmdlist(void)
4084 {
4085 int array_num;
4086 int elem_size = sizeof(mon_cmd_t);
4087
4088 array_num = sizeof(mon_cmds)/elem_size-1;
4089 qsort((void *)mon_cmds, array_num, elem_size, compare_mon_cmd);
4090
4091 array_num = sizeof(info_cmds)/elem_size-1;
4092 qsort((void *)info_cmds, array_num, elem_size, compare_mon_cmd);
4093 }
4094
4095
4096 /*
4097 * Local variables:
4098 * c-indent-level: 4
4099 * c-basic-offset: 4
4100 * tab-width: 8
4101 * End:
4102 */
4103
4104 /* These functions just adapt the readline interface in a typesafe way. We
4105 * could cast function pointers but that discards compiler checks.
4106 */
4107 static void GCC_FMT_ATTR(2, 3) monitor_readline_printf(void *opaque,
4108 const char *fmt, ...)
4109 {
4110 va_list ap;
4111 va_start(ap, fmt);
4112 monitor_vprintf(opaque, fmt, ap);
4113 va_end(ap);
4114 }
4115
4116 static void monitor_readline_flush(void *opaque)
4117 {
4118 monitor_flush(opaque);
4119 }
4120
4121 static void __attribute__((constructor)) monitor_lock_init(void)
4122 {
4123 qemu_mutex_init(&monitor_lock);
4124 }
4125
4126 void monitor_init(CharDriverState *chr, int flags)
4127 {
4128 static int is_first_init = 1;
4129 Monitor *mon;
4130
4131 if (is_first_init) {
4132 monitor_qapi_event_init();
4133 sortcmdlist();
4134 is_first_init = 0;
4135 }
4136
4137 mon = g_malloc(sizeof(*mon));
4138 monitor_data_init(mon);
4139
4140 mon->chr = chr;
4141 mon->flags = flags;
4142 if (flags & MONITOR_USE_READLINE) {
4143 mon->rs = readline_init(monitor_readline_printf,
4144 monitor_readline_flush,
4145 mon,
4146 monitor_find_completion);
4147 monitor_read_command(mon, 0);
4148 }
4149
4150 if (monitor_is_qmp(mon)) {
4151 qemu_chr_add_handlers(chr, monitor_can_read, monitor_qmp_read,
4152 monitor_qmp_event, mon);
4153 qemu_chr_fe_set_echo(chr, true);
4154 json_message_parser_init(&mon->qmp.parser, handle_qmp_command);
4155 } else {
4156 qemu_chr_add_handlers(chr, monitor_can_read, monitor_read,
4157 monitor_event, mon);
4158 }
4159
4160 qemu_mutex_lock(&monitor_lock);
4161 QLIST_INSERT_HEAD(&mon_list, mon, entry);
4162 qemu_mutex_unlock(&monitor_lock);
4163 }
4164
4165 static void bdrv_password_cb(void *opaque, const char *password,
4166 void *readline_opaque)
4167 {
4168 Monitor *mon = opaque;
4169 BlockDriverState *bs = readline_opaque;
4170 int ret = 0;
4171 Error *local_err = NULL;
4172
4173 bdrv_add_key(bs, password, &local_err);
4174 if (local_err) {
4175 error_report_err(local_err);
4176 ret = -EPERM;
4177 }
4178 if (mon->password_completion_cb)
4179 mon->password_completion_cb(mon->password_opaque, ret);
4180
4181 monitor_read_command(mon, 1);
4182 }
4183
4184 int monitor_read_bdrv_key_start(Monitor *mon, BlockDriverState *bs,
4185 BlockCompletionFunc *completion_cb,
4186 void *opaque)
4187 {
4188 int err;
4189
4190 monitor_printf(mon, "%s (%s) is encrypted.\n", bdrv_get_device_name(bs),
4191 bdrv_get_encrypted_filename(bs));
4192
4193 mon->password_completion_cb = completion_cb;
4194 mon->password_opaque = opaque;
4195
4196 err = monitor_read_password(mon, bdrv_password_cb, bs);
4197
4198 if (err && completion_cb)
4199 completion_cb(opaque, err);
4200
4201 return err;
4202 }
4203
4204 int monitor_read_block_device_key(Monitor *mon, const char *device,
4205 BlockCompletionFunc *completion_cb,
4206 void *opaque)
4207 {
4208 Error *err = NULL;
4209 BlockBackend *blk;
4210
4211 blk = blk_by_name(device);
4212 if (!blk) {
4213 monitor_printf(mon, "Device not found %s\n", device);
4214 return -1;
4215 }
4216 if (!blk_bs(blk)) {
4217 monitor_printf(mon, "Device '%s' has no medium\n", device);
4218 return -1;
4219 }
4220
4221 bdrv_add_key(blk_bs(blk), NULL, &err);
4222 if (err) {
4223 error_free(err);
4224 return monitor_read_bdrv_key_start(mon, blk_bs(blk), completion_cb, opaque);
4225 }
4226
4227 if (completion_cb) {
4228 completion_cb(opaque, 0);
4229 }
4230 return 0;
4231 }
4232
4233 QemuOptsList qemu_mon_opts = {
4234 .name = "mon",
4235 .implied_opt_name = "chardev",
4236 .head = QTAILQ_HEAD_INITIALIZER(qemu_mon_opts.head),
4237 .desc = {
4238 {
4239 .name = "mode",
4240 .type = QEMU_OPT_STRING,
4241 },{
4242 .name = "chardev",
4243 .type = QEMU_OPT_STRING,
4244 },{
4245 .name = "default",
4246 .type = QEMU_OPT_BOOL,
4247 },{
4248 .name = "pretty",
4249 .type = QEMU_OPT_BOOL,
4250 },
4251 { /* end of list */ }
4252 },
4253 };
4254
4255 #ifndef TARGET_I386
4256 void qmp_rtc_reset_reinjection(Error **errp)
4257 {
4258 error_setg(errp, QERR_FEATURE_DISABLED, "rtc-reset-reinjection");
4259 }
4260 #endif
4261
4262 #ifndef TARGET_S390X
4263 void qmp_dump_skeys(const char *filename, Error **errp)
4264 {
4265 error_setg(errp, QERR_FEATURE_DISABLED, "dump-skeys");
4266 }
4267 #endif
4268
4269 #ifndef TARGET_ARM
4270 GICCapabilityList *qmp_query_gic_capabilities(Error **errp)
4271 {
4272 error_setg(errp, QERR_FEATURE_DISABLED, "query-gic-capabilities");
4273 return NULL;
4274 }
4275 #endif
4276
4277 HotpluggableCPUList *qmp_query_hotpluggable_cpus(Error **errp)
4278 {
4279 MachineState *ms = MACHINE(qdev_get_machine());
4280 MachineClass *mc = MACHINE_GET_CLASS(ms);
4281
4282 if (!mc->query_hotpluggable_cpus) {
4283 error_setg(errp, QERR_FEATURE_DISABLED, "query-hotpluggable-cpus");
4284 return NULL;
4285 }
4286
4287 return mc->query_hotpluggable_cpus(ms);
4288 }
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