4 * Copyright (c) 2003-2004 Fabrice Bellard
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:
13 * The above copyright notice and this permission notice shall be included in
14 * all copies or substantial portions of the Software.
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
25 #include "qemu/osdep.h"
26 #include "qemu/units.h"
30 #include "monitor/qdev.h"
32 #include "hw/pci/pci.h"
33 #include "sysemu/watchdog.h"
34 #include "hw/loader.h"
35 #include "exec/gdbstub.h"
37 #include "net/slirp.h"
38 #include "chardev/char-fe.h"
39 #include "chardev/char-io.h"
40 #include "chardev/char-mux.h"
41 #include "ui/qemu-spice.h"
42 #include "sysemu/numa.h"
43 #include "monitor/monitor.h"
44 #include "qemu/config-file.h"
45 #include "qemu/readline.h"
46 #include "ui/console.h"
48 #include "sysemu/block-backend.h"
49 #include "audio/audio.h"
50 #include "disas/disas.h"
51 #include "sysemu/balloon.h"
52 #include "qemu/timer.h"
53 #include "sysemu/hw_accel.h"
55 #include "sysemu/tpm.h"
56 #include "qapi/qmp/qdict.h"
57 #include "qapi/qmp/qerror.h"
58 #include "qapi/qmp/qnum.h"
59 #include "qapi/qmp/qstring.h"
60 #include "qapi/qmp/qjson.h"
61 #include "qapi/qmp/json-parser.h"
62 #include "qapi/qmp/qlist.h"
63 #include "qom/object_interfaces.h"
64 #include "trace-root.h"
65 #include "trace/control.h"
66 #include "monitor/hmp-target.h"
67 #ifdef CONFIG_TRACE_SIMPLE
68 #include "trace/simple.h"
70 #include "exec/memory.h"
71 #include "exec/exec-all.h"
73 #include "qemu/option.h"
75 #include "qemu/thread.h"
76 #include "block/qapi.h"
77 #include "qapi/qapi-commands.h"
78 #include "qapi/qapi-emit-events.h"
79 #include "qapi/error.h"
80 #include "qapi/qmp-event.h"
81 #include "qapi/qapi-introspect.h"
82 #include "sysemu/qtest.h"
83 #include "sysemu/cpus.h"
84 #include "sysemu/iothread.h"
85 #include "qemu/cutils.h"
88 #if defined(TARGET_S390X)
89 #include "hw/s390x/storage-keys.h"
90 #include "hw/s390x/storage-attributes.h"
97 * 'B' block device name
98 * 's' string (accept optional quote)
99 * 'S' it just appends the rest of the string (accept optional quote)
100 * 'O' option string of the form NAME=VALUE,...
101 * parsed according to QemuOptsList given by its name
102 * Example: 'device:O' uses qemu_device_opts.
103 * Restriction: only lists with empty desc are supported
104 * TODO lift the restriction
106 * 'l' target long (32 or 64 bit)
107 * 'M' Non-negative target long (32 or 64 bit), in user mode the
108 * value is multiplied by 2^20 (think Mebibyte)
109 * 'o' octets (aka bytes)
110 * user mode accepts an optional E, e, P, p, T, t, G, g, M, m,
111 * K, k suffix, which multiplies the value by 2^60 for suffixes E
112 * and e, 2^50 for suffixes P and p, 2^40 for suffixes T and t,
113 * 2^30 for suffixes G and g, 2^20 for M and m, 2^10 for K and k
115 * user mode accepts an optional ms, us, ns suffix,
116 * which divides the value by 1e3, 1e6, 1e9, respectively
117 * '/' optional gdb-like print format (like "/10x")
119 * '?' optional type (for all types, except '/')
120 * '.' other form of optional type (for 'i' and 'l')
122 * user mode accepts "on" or "off"
123 * '-' optional parameter (eg. '-f')
127 typedef struct mon_cmd_t {
129 const char *args_type;
132 const char *flags; /* p=preconfig */
133 void (*cmd)(Monitor *mon, const QDict *qdict);
134 /* @sub_table is a list of 2nd level of commands. If it does not exist,
135 * cmd should be used. If it exists, sub_table[?].cmd should be
136 * used, and cmd of 1st level plays the role of help function.
138 struct mon_cmd_t *sub_table;
139 void (*command_completion)(ReadLineState *rs, int nb_args, const char *str);
142 /* file descriptors passed via SCM_RIGHTS */
143 typedef struct mon_fd_t mon_fd_t;
147 QLIST_ENTRY(mon_fd_t) next;
150 /* file descriptor associated with a file descriptor set */
151 typedef struct MonFdsetFd MonFdsetFd;
156 QLIST_ENTRY(MonFdsetFd) next;
159 /* file descriptor set containing fds passed via SCM_RIGHTS */
160 typedef struct MonFdset MonFdset;
163 QLIST_HEAD(, MonFdsetFd) fds;
164 QLIST_HEAD(, MonFdsetFd) dup_fds;
165 QLIST_ENTRY(MonFdset) next;
169 JSONMessageParser parser;
171 * When a client connects, we're in capabilities negotiation mode.
172 * @commands is &qmp_cap_negotiation_commands then. When command
173 * qmp_capabilities succeeds, we go into command mode, and
174 * @command becomes &qmp_commands.
176 QmpCommandList *commands;
177 bool capab_offered[QMP_CAPABILITY__MAX]; /* capabilities offered */
178 bool capab[QMP_CAPABILITY__MAX]; /* offered and accepted */
180 * Protects qmp request/response queue.
181 * Take monitor_lock first when you need both.
183 QemuMutex qmp_queue_lock;
184 /* Input queue that holds all the parsed QMP requests */
185 GQueue *qmp_requests;
189 * To prevent flooding clients, events can be throttled. The
190 * throttling is calculated globally, rather than per-Monitor
193 typedef struct MonitorQAPIEventState {
194 QAPIEvent event; /* Throttling state for this event type and... */
195 QDict *data; /* ... data, see qapi_event_throttle_equal() */
196 QEMUTimer *timer; /* Timer for handling delayed events */
197 QDict *qdict; /* Delayed event (if any) */
198 } MonitorQAPIEventState;
201 int64_t rate; /* Minimum time (in ns) between two events */
202 } MonitorQAPIEventConf;
208 int suspend_cnt; /* Needs to be accessed atomically */
213 * State used only in the thread "owning" the monitor.
214 * If @use_io_thread, this is @mon_iothread.
215 * Else, it's the main thread.
216 * These members can be safely accessed without locks.
222 BlockCompletionFunc *password_completion_cb;
223 void *password_opaque;
224 mon_cmd_t *cmd_table;
225 QTAILQ_ENTRY(Monitor) entry;
228 * The per-monitor lock. We can't access guest memory when holding
234 * Members that are protected by the per-monitor lock
236 QLIST_HEAD(, mon_fd_t) fds;
239 /* Read under either BQL or mon_lock, written with BQL+mon_lock. */
243 /* Shared monitor I/O thread */
244 IOThread *mon_iothread;
246 /* Bottom half to dispatch the requests received from I/O thread */
247 QEMUBH *qmp_dispatcher_bh;
250 /* Owner of the request */
252 /* "id" field of the request */
255 * Request object to be handled or Error to be reported
256 * (exactly one of them is non-null)
261 typedef struct QMPRequest QMPRequest;
263 /* QMP checker flags */
264 #define QMP_ACCEPT_UNKNOWNS 1
266 /* Protects mon_list, monitor_qapi_event_state, monitor_destroyed. */
267 static QemuMutex monitor_lock;
268 static GHashTable *monitor_qapi_event_state;
269 static QTAILQ_HEAD(, Monitor) mon_list;
270 static bool monitor_destroyed;
272 /* Protects mon_fdsets */
273 static QemuMutex mon_fdsets_lock;
274 static QLIST_HEAD(, MonFdset) mon_fdsets;
276 static int mon_refcount;
278 static mon_cmd_t mon_cmds[];
279 static mon_cmd_t info_cmds[];
281 QmpCommandList qmp_commands, qmp_cap_negotiation_commands;
283 __thread Monitor *cur_mon;
285 static void monitor_command_cb(void *opaque, const char *cmdline,
286 void *readline_opaque);
289 * Is @mon a QMP monitor?
291 static inline bool monitor_is_qmp(const Monitor *mon)
293 return (mon->flags & MONITOR_USE_CONTROL);
297 * Is @mon is using readline?
298 * Note: not all HMP monitors use readline, e.g., gdbserver has a
299 * non-interactive HMP monitor, so readline is not used there.
301 static inline bool monitor_uses_readline(const Monitor *mon)
303 return mon->flags & MONITOR_USE_READLINE;
306 static inline bool monitor_is_hmp_non_interactive(const Monitor *mon)
308 return !monitor_is_qmp(mon) && !monitor_uses_readline(mon);
312 * Return the clock to use for recording an event's time.
313 * It's QEMU_CLOCK_REALTIME, except for qtests it's
314 * QEMU_CLOCK_VIRTUAL, to support testing rate limits.
315 * Beware: result is invalid before configure_accelerator().
317 static inline QEMUClockType monitor_get_event_clock(void)
319 return qtest_enabled() ? QEMU_CLOCK_VIRTUAL : QEMU_CLOCK_REALTIME;
323 * Is the current monitor, if any, a QMP monitor?
325 bool monitor_cur_is_qmp(void)
327 return cur_mon && monitor_is_qmp(cur_mon);
330 void monitor_read_command(Monitor *mon, int show_prompt)
335 readline_start(mon->rs, "(qemu) ", 0, monitor_command_cb, NULL);
337 readline_show_prompt(mon->rs);
340 int monitor_read_password(Monitor *mon, ReadLineFunc *readline_func,
344 readline_start(mon->rs, "Password: ", 1, readline_func, opaque);
345 /* prompt is printed on return from the command handler */
348 monitor_printf(mon, "terminal does not support password prompting\n");
353 static void qmp_request_free(QMPRequest *req)
355 qobject_unref(req->id);
356 qobject_unref(req->req);
357 error_free(req->err);
361 /* Caller must hold mon->qmp.qmp_queue_lock */
362 static void monitor_qmp_cleanup_req_queue_locked(Monitor *mon)
364 while (!g_queue_is_empty(mon->qmp.qmp_requests)) {
365 qmp_request_free(g_queue_pop_head(mon->qmp.qmp_requests));
369 static void monitor_qmp_cleanup_queues(Monitor *mon)
371 qemu_mutex_lock(&mon->qmp.qmp_queue_lock);
372 monitor_qmp_cleanup_req_queue_locked(mon);
373 qemu_mutex_unlock(&mon->qmp.qmp_queue_lock);
377 static void monitor_flush_locked(Monitor *mon);
379 static gboolean monitor_unblocked(GIOChannel *chan, GIOCondition cond,
382 Monitor *mon = opaque;
384 qemu_mutex_lock(&mon->mon_lock);
386 monitor_flush_locked(mon);
387 qemu_mutex_unlock(&mon->mon_lock);
391 /* Caller must hold mon->mon_lock */
392 static void monitor_flush_locked(Monitor *mon)
398 if (mon->skip_flush) {
402 buf = qstring_get_str(mon->outbuf);
403 len = qstring_get_length(mon->outbuf);
405 if (len && !mon->mux_out) {
406 rc = qemu_chr_fe_write(&mon->chr, (const uint8_t *) buf, len);
407 if ((rc < 0 && errno != EAGAIN) || (rc == len)) {
408 /* all flushed or error */
409 qobject_unref(mon->outbuf);
410 mon->outbuf = qstring_new();
415 QString *tmp = qstring_from_str(buf + rc);
416 qobject_unref(mon->outbuf);
419 if (mon->out_watch == 0) {
421 qemu_chr_fe_add_watch(&mon->chr, G_IO_OUT | G_IO_HUP,
422 monitor_unblocked, mon);
427 void monitor_flush(Monitor *mon)
429 qemu_mutex_lock(&mon->mon_lock);
430 monitor_flush_locked(mon);
431 qemu_mutex_unlock(&mon->mon_lock);
434 /* flush at every end of line */
435 static void monitor_puts(Monitor *mon, const char *str)
439 qemu_mutex_lock(&mon->mon_lock);
445 qstring_append_chr(mon->outbuf, '\r');
447 qstring_append_chr(mon->outbuf, c);
449 monitor_flush_locked(mon);
452 qemu_mutex_unlock(&mon->mon_lock);
455 void monitor_vprintf(Monitor *mon, const char *fmt, va_list ap)
462 if (monitor_is_qmp(mon)) {
466 buf = g_strdup_vprintf(fmt, ap);
467 monitor_puts(mon, buf);
471 void monitor_printf(Monitor *mon, const char *fmt, ...)
475 monitor_vprintf(mon, fmt, ap);
479 int monitor_fprintf(FILE *stream, const char *fmt, ...)
483 monitor_vprintf((Monitor *)stream, fmt, ap);
488 static void qmp_send_response(Monitor *mon, const QDict *rsp)
490 const QObject *data = QOBJECT(rsp);
493 json = mon->flags & MONITOR_USE_PRETTY ? qobject_to_json_pretty(data) :
494 qobject_to_json(data);
495 assert(json != NULL);
497 qstring_append_chr(json, '\n');
498 monitor_puts(mon, qstring_get_str(json));
503 static MonitorQAPIEventConf monitor_qapi_event_conf[QAPI_EVENT__MAX] = {
504 /* Limit guest-triggerable events to 1 per second */
505 [QAPI_EVENT_RTC_CHANGE] = { 1000 * SCALE_MS },
506 [QAPI_EVENT_WATCHDOG] = { 1000 * SCALE_MS },
507 [QAPI_EVENT_BALLOON_CHANGE] = { 1000 * SCALE_MS },
508 [QAPI_EVENT_QUORUM_REPORT_BAD] = { 1000 * SCALE_MS },
509 [QAPI_EVENT_QUORUM_FAILURE] = { 1000 * SCALE_MS },
510 [QAPI_EVENT_VSERPORT_CHANGE] = { 1000 * SCALE_MS },
514 * Broadcast an event to all monitors.
515 * @qdict is the event object. Its member "event" must match @event.
516 * Caller must hold monitor_lock.
518 static void monitor_qapi_event_emit(QAPIEvent event, QDict *qdict)
522 trace_monitor_protocol_event_emit(event, qdict);
523 QTAILQ_FOREACH(mon, &mon_list, entry) {
524 if (monitor_is_qmp(mon)
525 && mon->qmp.commands != &qmp_cap_negotiation_commands) {
526 qmp_send_response(mon, qdict);
531 static void monitor_qapi_event_handler(void *opaque);
534 * Queue a new event for emission to Monitor instances,
535 * applying any rate limiting if required.
538 monitor_qapi_event_queue_no_reenter(QAPIEvent event, QDict *qdict)
540 MonitorQAPIEventConf *evconf;
541 MonitorQAPIEventState *evstate;
543 assert(event < QAPI_EVENT__MAX);
544 evconf = &monitor_qapi_event_conf[event];
545 trace_monitor_protocol_event_queue(event, qdict, evconf->rate);
547 qemu_mutex_lock(&monitor_lock);
550 /* Unthrottled event */
551 monitor_qapi_event_emit(event, qdict);
553 QDict *data = qobject_to(QDict, qdict_get(qdict, "data"));
554 MonitorQAPIEventState key = { .event = event, .data = data };
556 evstate = g_hash_table_lookup(monitor_qapi_event_state, &key);
557 assert(!evstate || timer_pending(evstate->timer));
561 * Timer is pending for (at least) evconf->rate ns after
562 * last send. Store event for sending when timer fires,
563 * replacing a prior stored event if any.
565 qobject_unref(evstate->qdict);
566 evstate->qdict = qobject_ref(qdict);
569 * Last send was (at least) evconf->rate ns ago.
570 * Send immediately, and arm the timer to call
571 * monitor_qapi_event_handler() in evconf->rate ns. Any
572 * events arriving before then will be delayed until then.
574 int64_t now = qemu_clock_get_ns(monitor_get_event_clock());
576 monitor_qapi_event_emit(event, qdict);
578 evstate = g_new(MonitorQAPIEventState, 1);
579 evstate->event = event;
580 evstate->data = qobject_ref(data);
581 evstate->qdict = NULL;
582 evstate->timer = timer_new_ns(monitor_get_event_clock(),
583 monitor_qapi_event_handler,
585 g_hash_table_add(monitor_qapi_event_state, evstate);
586 timer_mod_ns(evstate->timer, now + evconf->rate);
590 qemu_mutex_unlock(&monitor_lock);
593 void qapi_event_emit(QAPIEvent event, QDict *qdict)
596 * monitor_qapi_event_queue_no_reenter() is not reentrant: it
597 * would deadlock on monitor_lock. Work around by queueing
598 * events in thread-local storage.
599 * TODO: remove this, make it re-enter safe.
601 typedef struct MonitorQapiEvent {
604 QSIMPLEQ_ENTRY(MonitorQapiEvent) entry;
606 static __thread QSIMPLEQ_HEAD(, MonitorQapiEvent) event_queue;
607 static __thread bool reentered;
608 MonitorQapiEvent *ev;
611 QSIMPLEQ_INIT(&event_queue);
614 ev = g_new(MonitorQapiEvent, 1);
615 ev->qdict = qobject_ref(qdict);
617 QSIMPLEQ_INSERT_TAIL(&event_queue, ev, entry);
624 while ((ev = QSIMPLEQ_FIRST(&event_queue)) != NULL) {
625 QSIMPLEQ_REMOVE_HEAD(&event_queue, entry);
626 monitor_qapi_event_queue_no_reenter(ev->event, ev->qdict);
627 qobject_unref(ev->qdict);
635 * This function runs evconf->rate ns after sending a throttled
637 * If another event has since been stored, send it.
639 static void monitor_qapi_event_handler(void *opaque)
641 MonitorQAPIEventState *evstate = opaque;
642 MonitorQAPIEventConf *evconf = &monitor_qapi_event_conf[evstate->event];
644 trace_monitor_protocol_event_handler(evstate->event, evstate->qdict);
645 qemu_mutex_lock(&monitor_lock);
647 if (evstate->qdict) {
648 int64_t now = qemu_clock_get_ns(monitor_get_event_clock());
650 monitor_qapi_event_emit(evstate->event, evstate->qdict);
651 qobject_unref(evstate->qdict);
652 evstate->qdict = NULL;
653 timer_mod_ns(evstate->timer, now + evconf->rate);
655 g_hash_table_remove(monitor_qapi_event_state, evstate);
656 qobject_unref(evstate->data);
657 timer_free(evstate->timer);
661 qemu_mutex_unlock(&monitor_lock);
664 static unsigned int qapi_event_throttle_hash(const void *key)
666 const MonitorQAPIEventState *evstate = key;
667 unsigned int hash = evstate->event * 255;
669 if (evstate->event == QAPI_EVENT_VSERPORT_CHANGE) {
670 hash += g_str_hash(qdict_get_str(evstate->data, "id"));
673 if (evstate->event == QAPI_EVENT_QUORUM_REPORT_BAD) {
674 hash += g_str_hash(qdict_get_str(evstate->data, "node-name"));
680 static gboolean qapi_event_throttle_equal(const void *a, const void *b)
682 const MonitorQAPIEventState *eva = a;
683 const MonitorQAPIEventState *evb = b;
685 if (eva->event != evb->event) {
689 if (eva->event == QAPI_EVENT_VSERPORT_CHANGE) {
690 return !strcmp(qdict_get_str(eva->data, "id"),
691 qdict_get_str(evb->data, "id"));
694 if (eva->event == QAPI_EVENT_QUORUM_REPORT_BAD) {
695 return !strcmp(qdict_get_str(eva->data, "node-name"),
696 qdict_get_str(evb->data, "node-name"));
702 static void monitor_qapi_event_init(void)
704 monitor_qapi_event_state = g_hash_table_new(qapi_event_throttle_hash,
705 qapi_event_throttle_equal);
708 static void handle_hmp_command(Monitor *mon, const char *cmdline);
710 static void monitor_iothread_init(void);
712 static void monitor_data_init(Monitor *mon, bool skip_flush,
715 if (use_io_thread && !mon_iothread) {
716 monitor_iothread_init();
718 memset(mon, 0, sizeof(Monitor));
719 qemu_mutex_init(&mon->mon_lock);
720 qemu_mutex_init(&mon->qmp.qmp_queue_lock);
721 mon->outbuf = qstring_new();
722 /* Use *mon_cmds by default. */
723 mon->cmd_table = mon_cmds;
724 mon->skip_flush = skip_flush;
725 mon->use_io_thread = use_io_thread;
726 mon->qmp.qmp_requests = g_queue_new();
729 static void monitor_data_destroy(Monitor *mon)
731 g_free(mon->mon_cpu_path);
732 qemu_chr_fe_deinit(&mon->chr, false);
733 if (monitor_is_qmp(mon)) {
734 json_message_parser_destroy(&mon->qmp.parser);
736 readline_free(mon->rs);
737 qobject_unref(mon->outbuf);
738 qemu_mutex_destroy(&mon->mon_lock);
739 qemu_mutex_destroy(&mon->qmp.qmp_queue_lock);
740 monitor_qmp_cleanup_req_queue_locked(mon);
741 g_queue_free(mon->qmp.qmp_requests);
744 char *qmp_human_monitor_command(const char *command_line, bool has_cpu_index,
745 int64_t cpu_index, Error **errp)
748 Monitor *old_mon, hmp;
750 monitor_data_init(&hmp, true, false);
756 int ret = monitor_set_cpu(cpu_index);
759 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "cpu-index",
765 handle_hmp_command(&hmp, command_line);
768 qemu_mutex_lock(&hmp.mon_lock);
769 if (qstring_get_length(hmp.outbuf) > 0) {
770 output = g_strdup(qstring_get_str(hmp.outbuf));
772 output = g_strdup("");
774 qemu_mutex_unlock(&hmp.mon_lock);
777 monitor_data_destroy(&hmp);
781 static int compare_cmd(const char *name, const char *list)
783 const char *p, *pstart;
789 p = qemu_strchrnul(p, '|');
790 if ((p - pstart) == len && !memcmp(pstart, name, len))
799 static int get_str(char *buf, int buf_size, const char **pp)
807 while (qemu_isspace(*p)) {
818 while (*p != '\0' && *p != '\"') {
834 printf("unsupported escape code: '\\%c'\n", c);
837 if ((q - buf) < buf_size - 1) {
841 if ((q - buf) < buf_size - 1) {
848 printf("unterminated string\n");
853 while (*p != '\0' && !qemu_isspace(*p)) {
854 if ((q - buf) < buf_size - 1) {
867 static void free_cmdline_args(char **args, int nb_args)
871 assert(nb_args <= MAX_ARGS);
873 for (i = 0; i < nb_args; i++) {
880 * Parse the command line to get valid args.
881 * @cmdline: command line to be parsed.
882 * @pnb_args: location to store the number of args, must NOT be NULL.
883 * @args: location to store the args, which should be freed by caller, must
886 * Returns 0 on success, negative on failure.
888 * NOTE: this parser is an approximate form of the real command parser. Number
889 * of args have a limit of MAX_ARGS. If cmdline contains more, it will
890 * return with failure.
892 static int parse_cmdline(const char *cmdline,
893 int *pnb_args, char **args)
902 while (qemu_isspace(*p)) {
908 if (nb_args >= MAX_ARGS) {
911 ret = get_str(buf, sizeof(buf), &p);
915 args[nb_args] = g_strdup(buf);
922 free_cmdline_args(args, nb_args);
927 * Can command @cmd be executed in preconfig state?
929 static bool cmd_can_preconfig(const mon_cmd_t *cmd)
935 return strchr(cmd->flags, 'p');
938 static void help_cmd_dump_one(Monitor *mon,
939 const mon_cmd_t *cmd,
945 if (runstate_check(RUN_STATE_PRECONFIG) && !cmd_can_preconfig(cmd)) {
949 for (i = 0; i < prefix_args_nb; i++) {
950 monitor_printf(mon, "%s ", prefix_args[i]);
952 monitor_printf(mon, "%s %s -- %s\n", cmd->name, cmd->params, cmd->help);
955 /* @args[@arg_index] is the valid command need to find in @cmds */
956 static void help_cmd_dump(Monitor *mon, const mon_cmd_t *cmds,
957 char **args, int nb_args, int arg_index)
959 const mon_cmd_t *cmd;
962 /* No valid arg need to compare with, dump all in *cmds */
963 if (arg_index >= nb_args) {
964 for (cmd = cmds; cmd->name != NULL; cmd++) {
965 help_cmd_dump_one(mon, cmd, args, arg_index);
970 /* Find one entry to dump */
971 for (cmd = cmds; cmd->name != NULL; cmd++) {
972 if (compare_cmd(args[arg_index], cmd->name) &&
973 ((!runstate_check(RUN_STATE_PRECONFIG) ||
974 cmd_can_preconfig(cmd)))) {
975 if (cmd->sub_table) {
976 /* continue with next arg */
977 help_cmd_dump(mon, cmd->sub_table,
978 args, nb_args, arg_index + 1);
980 help_cmd_dump_one(mon, cmd, args, arg_index);
986 /* Command not found */
987 monitor_printf(mon, "unknown command: '");
988 for (i = 0; i <= arg_index; i++) {
989 monitor_printf(mon, "%s%s", args[i], i == arg_index ? "'\n" : " ");
993 static void help_cmd(Monitor *mon, const char *name)
995 char *args[MAX_ARGS];
998 /* 1. parse user input */
1000 /* special case for log, directly dump and return */
1001 if (!strcmp(name, "log")) {
1002 const QEMULogItem *item;
1003 monitor_printf(mon, "Log items (comma separated):\n");
1004 monitor_printf(mon, "%-10s %s\n", "none", "remove all logs");
1005 for (item = qemu_log_items; item->mask != 0; item++) {
1006 monitor_printf(mon, "%-10s %s\n", item->name, item->help);
1011 if (parse_cmdline(name, &nb_args, args) < 0) {
1016 /* 2. dump the contents according to parsed args */
1017 help_cmd_dump(mon, mon->cmd_table, args, nb_args, 0);
1019 free_cmdline_args(args, nb_args);
1022 static void do_help_cmd(Monitor *mon, const QDict *qdict)
1024 help_cmd(mon, qdict_get_try_str(qdict, "name"));
1027 static void hmp_trace_event(Monitor *mon, const QDict *qdict)
1029 const char *tp_name = qdict_get_str(qdict, "name");
1030 bool new_state = qdict_get_bool(qdict, "option");
1031 bool has_vcpu = qdict_haskey(qdict, "vcpu");
1032 int vcpu = qdict_get_try_int(qdict, "vcpu", 0);
1033 Error *local_err = NULL;
1036 monitor_printf(mon, "argument vcpu must be positive");
1040 qmp_trace_event_set_state(tp_name, new_state, true, true, has_vcpu, vcpu, &local_err);
1042 error_report_err(local_err);
1046 #ifdef CONFIG_TRACE_SIMPLE
1047 static void hmp_trace_file(Monitor *mon, const QDict *qdict)
1049 const char *op = qdict_get_try_str(qdict, "op");
1050 const char *arg = qdict_get_try_str(qdict, "arg");
1053 st_print_trace_file_status((FILE *)mon, &monitor_fprintf);
1054 } else if (!strcmp(op, "on")) {
1055 st_set_trace_file_enabled(true);
1056 } else if (!strcmp(op, "off")) {
1057 st_set_trace_file_enabled(false);
1058 } else if (!strcmp(op, "flush")) {
1059 st_flush_trace_buffer();
1060 } else if (!strcmp(op, "set")) {
1062 st_set_trace_file(arg);
1065 monitor_printf(mon, "unexpected argument \"%s\"\n", op);
1066 help_cmd(mon, "trace-file");
1071 static void hmp_info_help(Monitor *mon, const QDict *qdict)
1073 help_cmd(mon, "info");
1076 static void query_commands_cb(QmpCommand *cmd, void *opaque)
1078 CommandInfoList *info, **list = opaque;
1080 if (!cmd->enabled) {
1084 info = g_malloc0(sizeof(*info));
1085 info->value = g_malloc0(sizeof(*info->value));
1086 info->value->name = g_strdup(cmd->name);
1091 CommandInfoList *qmp_query_commands(Error **errp)
1093 CommandInfoList *list = NULL;
1095 qmp_for_each_command(cur_mon->qmp.commands, query_commands_cb, &list);
1100 EventInfoList *qmp_query_events(Error **errp)
1103 * TODO This deprecated command is the only user of
1104 * QAPIEvent_str() and QAPIEvent_lookup[]. When the command goes,
1105 * they should go, too.
1107 EventInfoList *info, *ev_list = NULL;
1110 for (e = 0 ; e < QAPI_EVENT__MAX ; e++) {
1111 const char *event_name = QAPIEvent_str(e);
1112 assert(event_name != NULL);
1113 info = g_malloc0(sizeof(*info));
1114 info->value = g_malloc0(sizeof(*info->value));
1115 info->value->name = g_strdup(event_name);
1117 info->next = ev_list;
1125 * Minor hack: generated marshalling suppressed for this command
1126 * ('gen': false in the schema) so we can parse the JSON string
1127 * directly into QObject instead of first parsing it with
1128 * visit_type_SchemaInfoList() into a SchemaInfoList, then marshal it
1129 * to QObject with generated output marshallers, every time. Instead,
1130 * we do it in test-qobject-input-visitor.c, just to make sure
1131 * qapi-gen.py's output actually conforms to the schema.
1133 static void qmp_query_qmp_schema(QDict *qdict, QObject **ret_data,
1136 *ret_data = qobject_from_qlit(&qmp_schema_qlit);
1139 static void monitor_init_qmp_commands(void)
1142 * Two command lists:
1143 * - qmp_commands contains all QMP commands
1144 * - qmp_cap_negotiation_commands contains just
1145 * "qmp_capabilities", to enforce capability negotiation
1148 qmp_init_marshal(&qmp_commands);
1150 qmp_register_command(&qmp_commands, "query-qmp-schema",
1151 qmp_query_qmp_schema, QCO_ALLOW_PRECONFIG);
1152 qmp_register_command(&qmp_commands, "device_add", qmp_device_add,
1154 qmp_register_command(&qmp_commands, "netdev_add", qmp_netdev_add,
1157 QTAILQ_INIT(&qmp_cap_negotiation_commands);
1158 qmp_register_command(&qmp_cap_negotiation_commands, "qmp_capabilities",
1159 qmp_marshal_qmp_capabilities, QCO_ALLOW_PRECONFIG);
1162 static bool qmp_oob_enabled(Monitor *mon)
1164 return mon->qmp.capab[QMP_CAPABILITY_OOB];
1167 static void monitor_qmp_caps_reset(Monitor *mon)
1169 memset(mon->qmp.capab_offered, 0, sizeof(mon->qmp.capab_offered));
1170 memset(mon->qmp.capab, 0, sizeof(mon->qmp.capab));
1171 mon->qmp.capab_offered[QMP_CAPABILITY_OOB] = mon->use_io_thread;
1175 * Accept QMP capabilities in @list for @mon.
1176 * On success, set mon->qmp.capab[], and return true.
1177 * On error, set @errp, and return false.
1179 static bool qmp_caps_accept(Monitor *mon, QMPCapabilityList *list,
1182 GString *unavailable = NULL;
1183 bool capab[QMP_CAPABILITY__MAX];
1185 memset(capab, 0, sizeof(capab));
1187 for (; list; list = list->next) {
1188 if (!mon->qmp.capab_offered[list->value]) {
1190 unavailable = g_string_new(QMPCapability_str(list->value));
1192 g_string_append_printf(unavailable, ", %s",
1193 QMPCapability_str(list->value));
1196 capab[list->value] = true;
1200 error_setg(errp, "Capability %s not available", unavailable->str);
1201 g_string_free(unavailable, true);
1205 memcpy(mon->qmp.capab, capab, sizeof(capab));
1209 void qmp_qmp_capabilities(bool has_enable, QMPCapabilityList *enable,
1212 if (cur_mon->qmp.commands == &qmp_commands) {
1213 error_set(errp, ERROR_CLASS_COMMAND_NOT_FOUND,
1214 "Capabilities negotiation is already complete, command "
1219 if (!qmp_caps_accept(cur_mon, enable, errp)) {
1223 cur_mon->qmp.commands = &qmp_commands;
1226 /* Set the current CPU defined by the user. Callers must hold BQL. */
1227 int monitor_set_cpu(int cpu_index)
1231 cpu = qemu_get_cpu(cpu_index);
1235 g_free(cur_mon->mon_cpu_path);
1236 cur_mon->mon_cpu_path = object_get_canonical_path(OBJECT(cpu));
1240 /* Callers must hold BQL. */
1241 static CPUState *mon_get_cpu_sync(bool synchronize)
1245 if (cur_mon->mon_cpu_path) {
1246 cpu = (CPUState *) object_resolve_path_type(cur_mon->mon_cpu_path,
1249 g_free(cur_mon->mon_cpu_path);
1250 cur_mon->mon_cpu_path = NULL;
1253 if (!cur_mon->mon_cpu_path) {
1257 monitor_set_cpu(first_cpu->cpu_index);
1261 cpu_synchronize_state(cpu);
1266 CPUState *mon_get_cpu(void)
1268 return mon_get_cpu_sync(true);
1271 CPUArchState *mon_get_cpu_env(void)
1273 CPUState *cs = mon_get_cpu();
1275 return cs ? cs->env_ptr : NULL;
1278 int monitor_get_cpu_index(void)
1280 CPUState *cs = mon_get_cpu_sync(false);
1282 return cs ? cs->cpu_index : UNASSIGNED_CPU_INDEX;
1285 static void hmp_info_registers(Monitor *mon, const QDict *qdict)
1287 bool all_cpus = qdict_get_try_bool(qdict, "cpustate_all", false);
1292 monitor_printf(mon, "\nCPU#%d\n", cs->cpu_index);
1293 cpu_dump_state(cs, (FILE *)mon, monitor_fprintf, CPU_DUMP_FPU);
1299 monitor_printf(mon, "No CPU available\n");
1303 cpu_dump_state(cs, (FILE *)mon, monitor_fprintf, CPU_DUMP_FPU);
1308 static void hmp_info_jit(Monitor *mon, const QDict *qdict)
1310 if (!tcg_enabled()) {
1311 error_report("JIT information is only available with accel=tcg");
1315 dump_exec_info((FILE *)mon, monitor_fprintf);
1316 dump_drift_info((FILE *)mon, monitor_fprintf);
1319 static void hmp_info_opcount(Monitor *mon, const QDict *qdict)
1321 dump_opcount_info((FILE *)mon, monitor_fprintf);
1325 static void hmp_info_sync_profile(Monitor *mon, const QDict *qdict)
1327 int64_t max = qdict_get_try_int(qdict, "max", 10);
1328 bool mean = qdict_get_try_bool(qdict, "mean", false);
1329 bool coalesce = !qdict_get_try_bool(qdict, "no_coalesce", false);
1330 enum QSPSortBy sort_by;
1332 sort_by = mean ? QSP_SORT_BY_AVG_WAIT_TIME : QSP_SORT_BY_TOTAL_WAIT_TIME;
1333 qsp_report((FILE *)mon, monitor_fprintf, max, sort_by, coalesce);
1336 static void hmp_info_history(Monitor *mon, const QDict *qdict)
1345 str = readline_get_history(mon->rs, i);
1348 monitor_printf(mon, "%d: '%s'\n", i, str);
1353 static void hmp_info_cpustats(Monitor *mon, const QDict *qdict)
1355 CPUState *cs = mon_get_cpu();
1358 monitor_printf(mon, "No CPU available\n");
1361 cpu_dump_statistics(cs, (FILE *)mon, &monitor_fprintf, 0);
1364 static void hmp_info_trace_events(Monitor *mon, const QDict *qdict)
1366 const char *name = qdict_get_try_str(qdict, "name");
1367 bool has_vcpu = qdict_haskey(qdict, "vcpu");
1368 int vcpu = qdict_get_try_int(qdict, "vcpu", 0);
1369 TraceEventInfoList *events;
1370 TraceEventInfoList *elem;
1371 Error *local_err = NULL;
1377 monitor_printf(mon, "argument vcpu must be positive");
1381 events = qmp_trace_event_get_state(name, has_vcpu, vcpu, &local_err);
1383 error_report_err(local_err);
1387 for (elem = events; elem != NULL; elem = elem->next) {
1388 monitor_printf(mon, "%s : state %u\n",
1390 elem->value->state == TRACE_EVENT_STATE_ENABLED ? 1 : 0);
1392 qapi_free_TraceEventInfoList(events);
1395 void qmp_client_migrate_info(const char *protocol, const char *hostname,
1396 bool has_port, int64_t port,
1397 bool has_tls_port, int64_t tls_port,
1398 bool has_cert_subject, const char *cert_subject,
1401 if (strcmp(protocol, "spice") == 0) {
1402 if (!qemu_using_spice(errp)) {
1406 if (!has_port && !has_tls_port) {
1407 error_setg(errp, QERR_MISSING_PARAMETER, "port/tls-port");
1411 if (qemu_spice_migrate_info(hostname,
1412 has_port ? port : -1,
1413 has_tls_port ? tls_port : -1,
1415 error_setg(errp, QERR_UNDEFINED_ERROR);
1421 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "protocol", "spice");
1424 static void hmp_logfile(Monitor *mon, const QDict *qdict)
1428 qemu_set_log_filename(qdict_get_str(qdict, "filename"), &err);
1430 error_report_err(err);
1434 static void hmp_log(Monitor *mon, const QDict *qdict)
1437 const char *items = qdict_get_str(qdict, "items");
1439 if (!strcmp(items, "none")) {
1442 mask = qemu_str_to_log_mask(items);
1444 help_cmd(mon, "log");
1451 static void hmp_singlestep(Monitor *mon, const QDict *qdict)
1453 const char *option = qdict_get_try_str(qdict, "option");
1454 if (!option || !strcmp(option, "on")) {
1456 } else if (!strcmp(option, "off")) {
1459 monitor_printf(mon, "unexpected option %s\n", option);
1463 static void hmp_gdbserver(Monitor *mon, const QDict *qdict)
1465 const char *device = qdict_get_try_str(qdict, "device");
1467 device = "tcp::" DEFAULT_GDBSTUB_PORT;
1468 if (gdbserver_start(device) < 0) {
1469 monitor_printf(mon, "Could not open gdbserver on device '%s'\n",
1471 } else if (strcmp(device, "none") == 0) {
1472 monitor_printf(mon, "Disabled gdbserver\n");
1474 monitor_printf(mon, "Waiting for gdb connection on device '%s'\n",
1479 static void hmp_watchdog_action(Monitor *mon, const QDict *qdict)
1481 const char *action = qdict_get_str(qdict, "action");
1482 if (select_watchdog_action(action) == -1) {
1483 monitor_printf(mon, "Unknown watchdog action '%s'\n", action);
1487 static void monitor_printc(Monitor *mon, int c)
1489 monitor_printf(mon, "'");
1492 monitor_printf(mon, "\\'");
1495 monitor_printf(mon, "\\\\");
1498 monitor_printf(mon, "\\n");
1501 monitor_printf(mon, "\\r");
1504 if (c >= 32 && c <= 126) {
1505 monitor_printf(mon, "%c", c);
1507 monitor_printf(mon, "\\x%02x", c);
1511 monitor_printf(mon, "'");
1514 static void memory_dump(Monitor *mon, int count, int format, int wsize,
1515 hwaddr addr, int is_physical)
1517 int l, line_size, i, max_digits, len;
1520 CPUState *cs = mon_get_cpu();
1522 if (!cs && (format == 'i' || !is_physical)) {
1523 monitor_printf(mon, "Can not dump without CPU\n");
1527 if (format == 'i') {
1528 monitor_disas(mon, cs, addr, count, is_physical);
1532 len = wsize * count;
1541 max_digits = DIV_ROUND_UP(wsize * 8, 3);
1545 max_digits = (wsize * 8) / 4;
1549 max_digits = DIV_ROUND_UP(wsize * 8 * 10, 33);
1558 monitor_printf(mon, TARGET_FMT_plx ":", addr);
1560 monitor_printf(mon, TARGET_FMT_lx ":", (target_ulong)addr);
1565 AddressSpace *as = cs ? cs->as : &address_space_memory;
1566 MemTxResult r = address_space_read(as, addr,
1567 MEMTXATTRS_UNSPECIFIED, buf, l);
1568 if (r != MEMTX_OK) {
1569 monitor_printf(mon, " Cannot access memory\n");
1573 if (cpu_memory_rw_debug(cs, addr, buf, l, 0) < 0) {
1574 monitor_printf(mon, " Cannot access memory\n");
1583 v = ldub_p(buf + i);
1586 v = lduw_p(buf + i);
1589 v = (uint32_t)ldl_p(buf + i);
1595 monitor_printf(mon, " ");
1598 monitor_printf(mon, "%#*" PRIo64, max_digits, v);
1601 monitor_printf(mon, "0x%0*" PRIx64, max_digits, v);
1604 monitor_printf(mon, "%*" PRIu64, max_digits, v);
1607 monitor_printf(mon, "%*" PRId64, max_digits, v);
1610 monitor_printc(mon, v);
1615 monitor_printf(mon, "\n");
1621 static void hmp_memory_dump(Monitor *mon, const QDict *qdict)
1623 int count = qdict_get_int(qdict, "count");
1624 int format = qdict_get_int(qdict, "format");
1625 int size = qdict_get_int(qdict, "size");
1626 target_long addr = qdict_get_int(qdict, "addr");
1628 memory_dump(mon, count, format, size, addr, 0);
1631 static void hmp_physical_memory_dump(Monitor *mon, const QDict *qdict)
1633 int count = qdict_get_int(qdict, "count");
1634 int format = qdict_get_int(qdict, "format");
1635 int size = qdict_get_int(qdict, "size");
1636 hwaddr addr = qdict_get_int(qdict, "addr");
1638 memory_dump(mon, count, format, size, addr, 1);
1641 static void *gpa2hva(MemoryRegion **p_mr, hwaddr addr, Error **errp)
1643 MemoryRegionSection mrs = memory_region_find(get_system_memory(),
1647 error_setg(errp, "No memory is mapped at address 0x%" HWADDR_PRIx, addr);
1651 if (!memory_region_is_ram(mrs.mr) && !memory_region_is_romd(mrs.mr)) {
1652 error_setg(errp, "Memory at address 0x%" HWADDR_PRIx "is not RAM", addr);
1653 memory_region_unref(mrs.mr);
1658 return qemu_map_ram_ptr(mrs.mr->ram_block, mrs.offset_within_region);
1661 static void hmp_gpa2hva(Monitor *mon, const QDict *qdict)
1663 hwaddr addr = qdict_get_int(qdict, "addr");
1664 Error *local_err = NULL;
1665 MemoryRegion *mr = NULL;
1668 ptr = gpa2hva(&mr, addr, &local_err);
1670 error_report_err(local_err);
1674 monitor_printf(mon, "Host virtual address for 0x%" HWADDR_PRIx
1676 addr, mr->name, ptr);
1678 memory_region_unref(mr);
1682 static uint64_t vtop(void *ptr, Error **errp)
1686 uintptr_t addr = (uintptr_t) ptr;
1687 uintptr_t pagesize = getpagesize();
1688 off_t offset = addr / pagesize * sizeof(pinfo);
1691 fd = open("/proc/self/pagemap", O_RDONLY);
1693 error_setg_errno(errp, errno, "Cannot open /proc/self/pagemap");
1697 /* Force copy-on-write if necessary. */
1698 atomic_add((uint8_t *)ptr, 0);
1700 if (pread(fd, &pinfo, sizeof(pinfo), offset) != sizeof(pinfo)) {
1701 error_setg_errno(errp, errno, "Cannot read pagemap");
1704 if ((pinfo & (1ull << 63)) == 0) {
1705 error_setg(errp, "Page not present");
1708 ret = ((pinfo & 0x007fffffffffffffull) * pagesize) | (addr & (pagesize - 1));
1715 static void hmp_gpa2hpa(Monitor *mon, const QDict *qdict)
1717 hwaddr addr = qdict_get_int(qdict, "addr");
1718 Error *local_err = NULL;
1719 MemoryRegion *mr = NULL;
1723 ptr = gpa2hva(&mr, addr, &local_err);
1725 error_report_err(local_err);
1729 physaddr = vtop(ptr, &local_err);
1731 error_report_err(local_err);
1733 monitor_printf(mon, "Host physical address for 0x%" HWADDR_PRIx
1734 " (%s) is 0x%" PRIx64 "\n",
1735 addr, mr->name, (uint64_t) physaddr);
1738 memory_region_unref(mr);
1742 static void do_print(Monitor *mon, const QDict *qdict)
1744 int format = qdict_get_int(qdict, "format");
1745 hwaddr val = qdict_get_int(qdict, "val");
1749 monitor_printf(mon, "%#" HWADDR_PRIo, val);
1752 monitor_printf(mon, "%#" HWADDR_PRIx, val);
1755 monitor_printf(mon, "%" HWADDR_PRIu, val);
1759 monitor_printf(mon, "%" HWADDR_PRId, val);
1762 monitor_printc(mon, val);
1765 monitor_printf(mon, "\n");
1768 static void hmp_sum(Monitor *mon, const QDict *qdict)
1772 uint32_t start = qdict_get_int(qdict, "start");
1773 uint32_t size = qdict_get_int(qdict, "size");
1776 for(addr = start; addr < (start + size); addr++) {
1777 uint8_t val = address_space_ldub(&address_space_memory, addr,
1778 MEMTXATTRS_UNSPECIFIED, NULL);
1779 /* BSD sum algorithm ('sum' Unix command) */
1780 sum = (sum >> 1) | (sum << 15);
1783 monitor_printf(mon, "%05d\n", sum);
1786 static int mouse_button_state;
1788 static void hmp_mouse_move(Monitor *mon, const QDict *qdict)
1790 int dx, dy, dz, button;
1791 const char *dx_str = qdict_get_str(qdict, "dx_str");
1792 const char *dy_str = qdict_get_str(qdict, "dy_str");
1793 const char *dz_str = qdict_get_try_str(qdict, "dz_str");
1795 dx = strtol(dx_str, NULL, 0);
1796 dy = strtol(dy_str, NULL, 0);
1797 qemu_input_queue_rel(NULL, INPUT_AXIS_X, dx);
1798 qemu_input_queue_rel(NULL, INPUT_AXIS_Y, dy);
1801 dz = strtol(dz_str, NULL, 0);
1803 button = (dz > 0) ? INPUT_BUTTON_WHEEL_UP : INPUT_BUTTON_WHEEL_DOWN;
1804 qemu_input_queue_btn(NULL, button, true);
1805 qemu_input_event_sync();
1806 qemu_input_queue_btn(NULL, button, false);
1809 qemu_input_event_sync();
1812 static void hmp_mouse_button(Monitor *mon, const QDict *qdict)
1814 static uint32_t bmap[INPUT_BUTTON__MAX] = {
1815 [INPUT_BUTTON_LEFT] = MOUSE_EVENT_LBUTTON,
1816 [INPUT_BUTTON_MIDDLE] = MOUSE_EVENT_MBUTTON,
1817 [INPUT_BUTTON_RIGHT] = MOUSE_EVENT_RBUTTON,
1819 int button_state = qdict_get_int(qdict, "button_state");
1821 if (mouse_button_state == button_state) {
1824 qemu_input_update_buttons(NULL, bmap, mouse_button_state, button_state);
1825 qemu_input_event_sync();
1826 mouse_button_state = button_state;
1829 static void hmp_ioport_read(Monitor *mon, const QDict *qdict)
1831 int size = qdict_get_int(qdict, "size");
1832 int addr = qdict_get_int(qdict, "addr");
1833 int has_index = qdict_haskey(qdict, "index");
1838 int index = qdict_get_int(qdict, "index");
1839 cpu_outb(addr & IOPORTS_MASK, index & 0xff);
1847 val = cpu_inb(addr);
1851 val = cpu_inw(addr);
1855 val = cpu_inl(addr);
1859 monitor_printf(mon, "port%c[0x%04x] = %#0*x\n",
1860 suffix, addr, size * 2, val);
1863 static void hmp_ioport_write(Monitor *mon, const QDict *qdict)
1865 int size = qdict_get_int(qdict, "size");
1866 int addr = qdict_get_int(qdict, "addr");
1867 int val = qdict_get_int(qdict, "val");
1869 addr &= IOPORTS_MASK;
1874 cpu_outb(addr, val);
1877 cpu_outw(addr, val);
1880 cpu_outl(addr, val);
1885 static void hmp_boot_set(Monitor *mon, const QDict *qdict)
1887 Error *local_err = NULL;
1888 const char *bootdevice = qdict_get_str(qdict, "bootdevice");
1890 qemu_boot_set(bootdevice, &local_err);
1892 error_report_err(local_err);
1894 monitor_printf(mon, "boot device list now set to %s\n", bootdevice);
1898 static void hmp_info_mtree(Monitor *mon, const QDict *qdict)
1900 bool flatview = qdict_get_try_bool(qdict, "flatview", false);
1901 bool dispatch_tree = qdict_get_try_bool(qdict, "dispatch_tree", false);
1902 bool owner = qdict_get_try_bool(qdict, "owner", false);
1904 mtree_info((fprintf_function)monitor_printf, mon, flatview, dispatch_tree,
1908 static void hmp_info_numa(Monitor *mon, const QDict *qdict)
1911 NumaNodeMem *node_mem;
1912 CpuInfoList *cpu_list, *cpu;
1914 cpu_list = qmp_query_cpus(&error_abort);
1915 node_mem = g_new0(NumaNodeMem, nb_numa_nodes);
1917 query_numa_node_mem(node_mem);
1918 monitor_printf(mon, "%d nodes\n", nb_numa_nodes);
1919 for (i = 0; i < nb_numa_nodes; i++) {
1920 monitor_printf(mon, "node %d cpus:", i);
1921 for (cpu = cpu_list; cpu; cpu = cpu->next) {
1922 if (cpu->value->has_props && cpu->value->props->has_node_id &&
1923 cpu->value->props->node_id == i) {
1924 monitor_printf(mon, " %" PRIi64, cpu->value->CPU);
1927 monitor_printf(mon, "\n");
1928 monitor_printf(mon, "node %d size: %" PRId64 " MB\n", i,
1929 node_mem[i].node_mem >> 20);
1930 monitor_printf(mon, "node %d plugged: %" PRId64 " MB\n", i,
1931 node_mem[i].node_plugged_mem >> 20);
1933 qapi_free_CpuInfoList(cpu_list);
1937 #ifdef CONFIG_PROFILER
1941 static void hmp_info_profile(Monitor *mon, const QDict *qdict)
1943 static int64_t last_cpu_exec_time;
1944 int64_t cpu_exec_time;
1947 cpu_exec_time = tcg_cpu_exec_time();
1948 delta = cpu_exec_time - last_cpu_exec_time;
1950 monitor_printf(mon, "async time %" PRId64 " (%0.3f)\n",
1951 dev_time, dev_time / (double)NANOSECONDS_PER_SECOND);
1952 monitor_printf(mon, "qemu time %" PRId64 " (%0.3f)\n",
1953 delta, delta / (double)NANOSECONDS_PER_SECOND);
1954 last_cpu_exec_time = cpu_exec_time;
1958 static void hmp_info_profile(Monitor *mon, const QDict *qdict)
1960 monitor_printf(mon, "Internal profiler not compiled\n");
1964 /* Capture support */
1965 static QLIST_HEAD (capture_list_head, CaptureState) capture_head;
1967 static void hmp_info_capture(Monitor *mon, const QDict *qdict)
1972 for (s = capture_head.lh_first, i = 0; s; s = s->entries.le_next, ++i) {
1973 monitor_printf(mon, "[%d]: ", i);
1974 s->ops.info (s->opaque);
1978 static void hmp_stopcapture(Monitor *mon, const QDict *qdict)
1981 int n = qdict_get_int(qdict, "n");
1984 for (s = capture_head.lh_first, i = 0; s; s = s->entries.le_next, ++i) {
1986 s->ops.destroy (s->opaque);
1987 QLIST_REMOVE (s, entries);
1994 static void hmp_wavcapture(Monitor *mon, const QDict *qdict)
1996 const char *path = qdict_get_str(qdict, "path");
1997 int has_freq = qdict_haskey(qdict, "freq");
1998 int freq = qdict_get_try_int(qdict, "freq", -1);
1999 int has_bits = qdict_haskey(qdict, "bits");
2000 int bits = qdict_get_try_int(qdict, "bits", -1);
2001 int has_channels = qdict_haskey(qdict, "nchannels");
2002 int nchannels = qdict_get_try_int(qdict, "nchannels", -1);
2005 s = g_malloc0 (sizeof (*s));
2007 freq = has_freq ? freq : 44100;
2008 bits = has_bits ? bits : 16;
2009 nchannels = has_channels ? nchannels : 2;
2011 if (wav_start_capture (s, path, freq, bits, nchannels)) {
2012 monitor_printf(mon, "Failed to add wave capture\n");
2016 QLIST_INSERT_HEAD (&capture_head, s, entries);
2019 static qemu_acl *find_acl(Monitor *mon, const char *name)
2021 qemu_acl *acl = qemu_acl_find(name);
2024 monitor_printf(mon, "acl: unknown list '%s'\n", name);
2029 static void hmp_acl_show(Monitor *mon, const QDict *qdict)
2031 const char *aclname = qdict_get_str(qdict, "aclname");
2032 qemu_acl *acl = find_acl(mon, aclname);
2033 qemu_acl_entry *entry;
2037 monitor_printf(mon, "policy: %s\n",
2038 acl->defaultDeny ? "deny" : "allow");
2039 QTAILQ_FOREACH(entry, &acl->entries, next) {
2041 monitor_printf(mon, "%d: %s %s\n", i,
2042 entry->deny ? "deny" : "allow", entry->match);
2047 static void hmp_acl_reset(Monitor *mon, const QDict *qdict)
2049 const char *aclname = qdict_get_str(qdict, "aclname");
2050 qemu_acl *acl = find_acl(mon, aclname);
2053 qemu_acl_reset(acl);
2054 monitor_printf(mon, "acl: removed all rules\n");
2058 static void hmp_acl_policy(Monitor *mon, const QDict *qdict)
2060 const char *aclname = qdict_get_str(qdict, "aclname");
2061 const char *policy = qdict_get_str(qdict, "policy");
2062 qemu_acl *acl = find_acl(mon, aclname);
2065 if (strcmp(policy, "allow") == 0) {
2066 acl->defaultDeny = 0;
2067 monitor_printf(mon, "acl: policy set to 'allow'\n");
2068 } else if (strcmp(policy, "deny") == 0) {
2069 acl->defaultDeny = 1;
2070 monitor_printf(mon, "acl: policy set to 'deny'\n");
2072 monitor_printf(mon, "acl: unknown policy '%s', "
2073 "expected 'deny' or 'allow'\n", policy);
2078 static void hmp_acl_add(Monitor *mon, const QDict *qdict)
2080 const char *aclname = qdict_get_str(qdict, "aclname");
2081 const char *match = qdict_get_str(qdict, "match");
2082 const char *policy = qdict_get_str(qdict, "policy");
2083 int has_index = qdict_haskey(qdict, "index");
2084 int index = qdict_get_try_int(qdict, "index", -1);
2085 qemu_acl *acl = find_acl(mon, aclname);
2089 if (strcmp(policy, "allow") == 0) {
2091 } else if (strcmp(policy, "deny") == 0) {
2094 monitor_printf(mon, "acl: unknown policy '%s', "
2095 "expected 'deny' or 'allow'\n", policy);
2099 ret = qemu_acl_insert(acl, deny, match, index);
2101 ret = qemu_acl_append(acl, deny, match);
2103 monitor_printf(mon, "acl: unable to add acl entry\n");
2105 monitor_printf(mon, "acl: added rule at position %d\n", ret);
2109 static void hmp_acl_remove(Monitor *mon, const QDict *qdict)
2111 const char *aclname = qdict_get_str(qdict, "aclname");
2112 const char *match = qdict_get_str(qdict, "match");
2113 qemu_acl *acl = find_acl(mon, aclname);
2117 ret = qemu_acl_remove(acl, match);
2119 monitor_printf(mon, "acl: no matching acl entry\n");
2121 monitor_printf(mon, "acl: removed rule at position %d\n", ret);
2125 void qmp_getfd(const char *fdname, Error **errp)
2130 fd = qemu_chr_fe_get_msgfd(&cur_mon->chr);
2132 error_setg(errp, QERR_FD_NOT_SUPPLIED);
2136 if (qemu_isdigit(fdname[0])) {
2138 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "fdname",
2139 "a name not starting with a digit");
2143 qemu_mutex_lock(&cur_mon->mon_lock);
2144 QLIST_FOREACH(monfd, &cur_mon->fds, next) {
2145 if (strcmp(monfd->name, fdname) != 0) {
2151 qemu_mutex_unlock(&cur_mon->mon_lock);
2152 /* Make sure close() is outside critical section */
2157 monfd = g_malloc0(sizeof(mon_fd_t));
2158 monfd->name = g_strdup(fdname);
2161 QLIST_INSERT_HEAD(&cur_mon->fds, monfd, next);
2162 qemu_mutex_unlock(&cur_mon->mon_lock);
2165 void qmp_closefd(const char *fdname, Error **errp)
2170 qemu_mutex_lock(&cur_mon->mon_lock);
2171 QLIST_FOREACH(monfd, &cur_mon->fds, next) {
2172 if (strcmp(monfd->name, fdname) != 0) {
2176 QLIST_REMOVE(monfd, next);
2178 g_free(monfd->name);
2180 qemu_mutex_unlock(&cur_mon->mon_lock);
2181 /* Make sure close() is outside critical section */
2186 qemu_mutex_unlock(&cur_mon->mon_lock);
2187 error_setg(errp, QERR_FD_NOT_FOUND, fdname);
2190 int monitor_get_fd(Monitor *mon, const char *fdname, Error **errp)
2194 qemu_mutex_lock(&mon->mon_lock);
2195 QLIST_FOREACH(monfd, &mon->fds, next) {
2198 if (strcmp(monfd->name, fdname) != 0) {
2204 /* caller takes ownership of fd */
2205 QLIST_REMOVE(monfd, next);
2206 g_free(monfd->name);
2208 qemu_mutex_unlock(&mon->mon_lock);
2213 qemu_mutex_unlock(&mon->mon_lock);
2214 error_setg(errp, "File descriptor named '%s' has not been found", fdname);
2218 static void monitor_fdset_cleanup(MonFdset *mon_fdset)
2220 MonFdsetFd *mon_fdset_fd;
2221 MonFdsetFd *mon_fdset_fd_next;
2223 QLIST_FOREACH_SAFE(mon_fdset_fd, &mon_fdset->fds, next, mon_fdset_fd_next) {
2224 if ((mon_fdset_fd->removed ||
2225 (QLIST_EMPTY(&mon_fdset->dup_fds) && mon_refcount == 0)) &&
2226 runstate_is_running()) {
2227 close(mon_fdset_fd->fd);
2228 g_free(mon_fdset_fd->opaque);
2229 QLIST_REMOVE(mon_fdset_fd, next);
2230 g_free(mon_fdset_fd);
2234 if (QLIST_EMPTY(&mon_fdset->fds) && QLIST_EMPTY(&mon_fdset->dup_fds)) {
2235 QLIST_REMOVE(mon_fdset, next);
2240 static void monitor_fdsets_cleanup(void)
2242 MonFdset *mon_fdset;
2243 MonFdset *mon_fdset_next;
2245 qemu_mutex_lock(&mon_fdsets_lock);
2246 QLIST_FOREACH_SAFE(mon_fdset, &mon_fdsets, next, mon_fdset_next) {
2247 monitor_fdset_cleanup(mon_fdset);
2249 qemu_mutex_unlock(&mon_fdsets_lock);
2252 AddfdInfo *qmp_add_fd(bool has_fdset_id, int64_t fdset_id, bool has_opaque,
2253 const char *opaque, Error **errp)
2256 Monitor *mon = cur_mon;
2259 fd = qemu_chr_fe_get_msgfd(&mon->chr);
2261 error_setg(errp, QERR_FD_NOT_SUPPLIED);
2265 fdinfo = monitor_fdset_add_fd(fd, has_fdset_id, fdset_id,
2266 has_opaque, opaque, errp);
2278 void qmp_remove_fd(int64_t fdset_id, bool has_fd, int64_t fd, Error **errp)
2280 MonFdset *mon_fdset;
2281 MonFdsetFd *mon_fdset_fd;
2284 qemu_mutex_lock(&mon_fdsets_lock);
2285 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2286 if (mon_fdset->id != fdset_id) {
2289 QLIST_FOREACH(mon_fdset_fd, &mon_fdset->fds, next) {
2291 if (mon_fdset_fd->fd != fd) {
2294 mon_fdset_fd->removed = true;
2297 mon_fdset_fd->removed = true;
2300 if (has_fd && !mon_fdset_fd) {
2303 monitor_fdset_cleanup(mon_fdset);
2304 qemu_mutex_unlock(&mon_fdsets_lock);
2309 qemu_mutex_unlock(&mon_fdsets_lock);
2311 snprintf(fd_str, sizeof(fd_str), "fdset-id:%" PRId64 ", fd:%" PRId64,
2314 snprintf(fd_str, sizeof(fd_str), "fdset-id:%" PRId64, fdset_id);
2316 error_setg(errp, QERR_FD_NOT_FOUND, fd_str);
2319 FdsetInfoList *qmp_query_fdsets(Error **errp)
2321 MonFdset *mon_fdset;
2322 MonFdsetFd *mon_fdset_fd;
2323 FdsetInfoList *fdset_list = NULL;
2325 qemu_mutex_lock(&mon_fdsets_lock);
2326 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2327 FdsetInfoList *fdset_info = g_malloc0(sizeof(*fdset_info));
2328 FdsetFdInfoList *fdsetfd_list = NULL;
2330 fdset_info->value = g_malloc0(sizeof(*fdset_info->value));
2331 fdset_info->value->fdset_id = mon_fdset->id;
2333 QLIST_FOREACH(mon_fdset_fd, &mon_fdset->fds, next) {
2334 FdsetFdInfoList *fdsetfd_info;
2336 fdsetfd_info = g_malloc0(sizeof(*fdsetfd_info));
2337 fdsetfd_info->value = g_malloc0(sizeof(*fdsetfd_info->value));
2338 fdsetfd_info->value->fd = mon_fdset_fd->fd;
2339 if (mon_fdset_fd->opaque) {
2340 fdsetfd_info->value->has_opaque = true;
2341 fdsetfd_info->value->opaque = g_strdup(mon_fdset_fd->opaque);
2343 fdsetfd_info->value->has_opaque = false;
2346 fdsetfd_info->next = fdsetfd_list;
2347 fdsetfd_list = fdsetfd_info;
2350 fdset_info->value->fds = fdsetfd_list;
2352 fdset_info->next = fdset_list;
2353 fdset_list = fdset_info;
2355 qemu_mutex_unlock(&mon_fdsets_lock);
2360 AddfdInfo *monitor_fdset_add_fd(int fd, bool has_fdset_id, int64_t fdset_id,
2361 bool has_opaque, const char *opaque,
2364 MonFdset *mon_fdset = NULL;
2365 MonFdsetFd *mon_fdset_fd;
2368 qemu_mutex_lock(&mon_fdsets_lock);
2370 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2371 /* Break if match found or match impossible due to ordering by ID */
2372 if (fdset_id <= mon_fdset->id) {
2373 if (fdset_id < mon_fdset->id) {
2381 if (mon_fdset == NULL) {
2382 int64_t fdset_id_prev = -1;
2383 MonFdset *mon_fdset_cur = QLIST_FIRST(&mon_fdsets);
2387 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "fdset-id",
2388 "a non-negative value");
2389 qemu_mutex_unlock(&mon_fdsets_lock);
2392 /* Use specified fdset ID */
2393 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2394 mon_fdset_cur = mon_fdset;
2395 if (fdset_id < mon_fdset_cur->id) {
2400 /* Use first available fdset ID */
2401 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2402 mon_fdset_cur = mon_fdset;
2403 if (fdset_id_prev == mon_fdset_cur->id - 1) {
2404 fdset_id_prev = mon_fdset_cur->id;
2411 mon_fdset = g_malloc0(sizeof(*mon_fdset));
2413 mon_fdset->id = fdset_id;
2415 mon_fdset->id = fdset_id_prev + 1;
2418 /* The fdset list is ordered by fdset ID */
2419 if (!mon_fdset_cur) {
2420 QLIST_INSERT_HEAD(&mon_fdsets, mon_fdset, next);
2421 } else if (mon_fdset->id < mon_fdset_cur->id) {
2422 QLIST_INSERT_BEFORE(mon_fdset_cur, mon_fdset, next);
2424 QLIST_INSERT_AFTER(mon_fdset_cur, mon_fdset, next);
2428 mon_fdset_fd = g_malloc0(sizeof(*mon_fdset_fd));
2429 mon_fdset_fd->fd = fd;
2430 mon_fdset_fd->removed = false;
2432 mon_fdset_fd->opaque = g_strdup(opaque);
2434 QLIST_INSERT_HEAD(&mon_fdset->fds, mon_fdset_fd, next);
2436 fdinfo = g_malloc0(sizeof(*fdinfo));
2437 fdinfo->fdset_id = mon_fdset->id;
2438 fdinfo->fd = mon_fdset_fd->fd;
2440 qemu_mutex_unlock(&mon_fdsets_lock);
2444 int monitor_fdset_get_fd(int64_t fdset_id, int flags)
2449 MonFdset *mon_fdset;
2450 MonFdsetFd *mon_fdset_fd;
2454 qemu_mutex_lock(&mon_fdsets_lock);
2455 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2456 if (mon_fdset->id != fdset_id) {
2459 QLIST_FOREACH(mon_fdset_fd, &mon_fdset->fds, next) {
2460 mon_fd_flags = fcntl(mon_fdset_fd->fd, F_GETFL);
2461 if (mon_fd_flags == -1) {
2466 if ((flags & O_ACCMODE) == (mon_fd_flags & O_ACCMODE)) {
2467 ret = mon_fdset_fd->fd;
2477 qemu_mutex_unlock(&mon_fdsets_lock);
2482 int monitor_fdset_dup_fd_add(int64_t fdset_id, int dup_fd)
2484 MonFdset *mon_fdset;
2485 MonFdsetFd *mon_fdset_fd_dup;
2487 qemu_mutex_lock(&mon_fdsets_lock);
2488 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2489 if (mon_fdset->id != fdset_id) {
2492 QLIST_FOREACH(mon_fdset_fd_dup, &mon_fdset->dup_fds, next) {
2493 if (mon_fdset_fd_dup->fd == dup_fd) {
2497 mon_fdset_fd_dup = g_malloc0(sizeof(*mon_fdset_fd_dup));
2498 mon_fdset_fd_dup->fd = dup_fd;
2499 QLIST_INSERT_HEAD(&mon_fdset->dup_fds, mon_fdset_fd_dup, next);
2500 qemu_mutex_unlock(&mon_fdsets_lock);
2505 qemu_mutex_unlock(&mon_fdsets_lock);
2509 static int monitor_fdset_dup_fd_find_remove(int dup_fd, bool remove)
2511 MonFdset *mon_fdset;
2512 MonFdsetFd *mon_fdset_fd_dup;
2514 qemu_mutex_lock(&mon_fdsets_lock);
2515 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2516 QLIST_FOREACH(mon_fdset_fd_dup, &mon_fdset->dup_fds, next) {
2517 if (mon_fdset_fd_dup->fd == dup_fd) {
2519 QLIST_REMOVE(mon_fdset_fd_dup, next);
2520 if (QLIST_EMPTY(&mon_fdset->dup_fds)) {
2521 monitor_fdset_cleanup(mon_fdset);
2525 qemu_mutex_unlock(&mon_fdsets_lock);
2526 return mon_fdset->id;
2533 qemu_mutex_unlock(&mon_fdsets_lock);
2537 int monitor_fdset_dup_fd_find(int dup_fd)
2539 return monitor_fdset_dup_fd_find_remove(dup_fd, false);
2542 void monitor_fdset_dup_fd_remove(int dup_fd)
2544 monitor_fdset_dup_fd_find_remove(dup_fd, true);
2547 int monitor_fd_param(Monitor *mon, const char *fdname, Error **errp)
2550 Error *local_err = NULL;
2552 if (!qemu_isdigit(fdname[0]) && mon) {
2553 fd = monitor_get_fd(mon, fdname, &local_err);
2555 fd = qemu_parse_fd(fdname);
2557 error_setg(&local_err, "Invalid file descriptor number '%s'",
2562 error_propagate(errp, local_err);
2571 /* Please update hmp-commands.hx when adding or changing commands */
2572 static mon_cmd_t info_cmds[] = {
2573 #include "hmp-commands-info.h"
2577 /* mon_cmds and info_cmds would be sorted at runtime */
2578 static mon_cmd_t mon_cmds[] = {
2579 #include "hmp-commands.h"
2583 /*******************************************************************/
2585 static const char *pch;
2586 static sigjmp_buf expr_env;
2589 static void GCC_FMT_ATTR(2, 3) QEMU_NORETURN
2590 expr_error(Monitor *mon, const char *fmt, ...)
2594 monitor_vprintf(mon, fmt, ap);
2595 monitor_printf(mon, "\n");
2597 siglongjmp(expr_env, 1);
2600 /* return 0 if OK, -1 if not found */
2601 static int get_monitor_def(target_long *pval, const char *name)
2603 const MonitorDef *md = target_monitor_defs();
2604 CPUState *cs = mon_get_cpu();
2609 if (cs == NULL || md == NULL) {
2613 for(; md->name != NULL; md++) {
2614 if (compare_cmd(name, md->name)) {
2615 if (md->get_value) {
2616 *pval = md->get_value(md, md->offset);
2618 CPUArchState *env = mon_get_cpu_env();
2619 ptr = (uint8_t *)env + md->offset;
2622 *pval = *(int32_t *)ptr;
2625 *pval = *(target_long *)ptr;
2636 ret = target_get_monitor_def(cs, name, &tmp);
2638 *pval = (target_long) tmp;
2644 static void next(void)
2648 while (qemu_isspace(*pch))
2653 static int64_t expr_sum(Monitor *mon);
2655 static int64_t expr_unary(Monitor *mon)
2664 n = expr_unary(mon);
2668 n = -expr_unary(mon);
2672 n = ~expr_unary(mon);
2678 expr_error(mon, "')' expected");
2685 expr_error(mon, "character constant expected");
2689 expr_error(mon, "missing terminating \' character");
2699 while ((*pch >= 'a' && *pch <= 'z') ||
2700 (*pch >= 'A' && *pch <= 'Z') ||
2701 (*pch >= '0' && *pch <= '9') ||
2702 *pch == '_' || *pch == '.') {
2703 if ((q - buf) < sizeof(buf) - 1)
2707 while (qemu_isspace(*pch))
2710 ret = get_monitor_def(®, buf);
2712 expr_error(mon, "unknown register");
2717 expr_error(mon, "unexpected end of expression");
2722 n = strtoull(pch, &p, 0);
2723 if (errno == ERANGE) {
2724 expr_error(mon, "number too large");
2727 expr_error(mon, "invalid char '%c' in expression", *p);
2730 while (qemu_isspace(*pch))
2738 static int64_t expr_prod(Monitor *mon)
2743 val = expr_unary(mon);
2746 if (op != '*' && op != '/' && op != '%')
2749 val2 = expr_unary(mon);
2758 expr_error(mon, "division by zero");
2769 static int64_t expr_logic(Monitor *mon)
2774 val = expr_prod(mon);
2777 if (op != '&' && op != '|' && op != '^')
2780 val2 = expr_prod(mon);
2797 static int64_t expr_sum(Monitor *mon)
2802 val = expr_logic(mon);
2805 if (op != '+' && op != '-')
2808 val2 = expr_logic(mon);
2817 static int get_expr(Monitor *mon, int64_t *pval, const char **pp)
2820 if (sigsetjmp(expr_env, 0)) {
2824 while (qemu_isspace(*pch))
2826 *pval = expr_sum(mon);
2831 static int get_double(Monitor *mon, double *pval, const char **pp)
2833 const char *p = *pp;
2837 d = strtod(p, &tailp);
2839 monitor_printf(mon, "Number expected\n");
2842 if (d != d || d - d != 0) {
2843 /* NaN or infinity */
2844 monitor_printf(mon, "Bad number\n");
2853 * Store the command-name in cmdname, and return a pointer to
2854 * the remaining of the command string.
2856 static const char *get_command_name(const char *cmdline,
2857 char *cmdname, size_t nlen)
2860 const char *p, *pstart;
2863 while (qemu_isspace(*p))
2868 while (*p != '\0' && *p != '/' && !qemu_isspace(*p))
2873 memcpy(cmdname, pstart, len);
2874 cmdname[len] = '\0';
2879 * Read key of 'type' into 'key' and return the current
2882 static char *key_get_info(const char *type, char **key)
2890 p = strchr(type, ':');
2897 str = g_malloc(len + 1);
2898 memcpy(str, type, len);
2905 static int default_fmt_format = 'x';
2906 static int default_fmt_size = 4;
2908 static int is_valid_option(const char *c, const char *typestr)
2916 typestr = strstr(typestr, option);
2917 return (typestr != NULL);
2920 static const mon_cmd_t *search_dispatch_table(const mon_cmd_t *disp_table,
2921 const char *cmdname)
2923 const mon_cmd_t *cmd;
2925 for (cmd = disp_table; cmd->name != NULL; cmd++) {
2926 if (compare_cmd(cmdname, cmd->name)) {
2935 * Parse command name from @cmdp according to command table @table.
2936 * If blank, return NULL.
2937 * Else, if no valid command can be found, report to @mon, and return
2939 * Else, change @cmdp to point right behind the name, and return its
2940 * command table entry.
2941 * Do not assume the return value points into @table! It doesn't when
2942 * the command is found in a sub-command table.
2944 static const mon_cmd_t *monitor_parse_command(Monitor *mon,
2945 const char *cmdp_start,
2950 const mon_cmd_t *cmd;
2953 /* extract the command name */
2954 p = get_command_name(*cmdp, cmdname, sizeof(cmdname));
2958 cmd = search_dispatch_table(table, cmdname);
2960 monitor_printf(mon, "unknown command: '%.*s'\n",
2961 (int)(p - cmdp_start), cmdp_start);
2964 if (runstate_check(RUN_STATE_PRECONFIG) && !cmd_can_preconfig(cmd)) {
2965 monitor_printf(mon, "Command '%.*s' not available with -preconfig "
2966 "until after exit_preconfig.\n",
2967 (int)(p - cmdp_start), cmdp_start);
2971 /* filter out following useless space */
2972 while (qemu_isspace(*p)) {
2977 /* search sub command */
2978 if (cmd->sub_table != NULL && *p != '\0') {
2979 return monitor_parse_command(mon, cmdp_start, cmdp, cmd->sub_table);
2986 * Parse arguments for @cmd.
2987 * If it can't be parsed, report to @mon, and return NULL.
2988 * Else, insert command arguments into a QDict, and return it.
2989 * Note: On success, caller has to free the QDict structure.
2992 static QDict *monitor_parse_arguments(Monitor *mon,
2994 const mon_cmd_t *cmd)
2996 const char *typestr;
2999 const char *p = *endp;
3001 QDict *qdict = qdict_new();
3003 /* parse the parameters */
3004 typestr = cmd->args_type;
3006 typestr = key_get_info(typestr, &key);
3018 while (qemu_isspace(*p))
3020 if (*typestr == '?') {
3023 /* no optional string: NULL argument */
3027 ret = get_str(buf, sizeof(buf), &p);
3031 monitor_printf(mon, "%s: filename expected\n",
3035 monitor_printf(mon, "%s: block device name expected\n",
3039 monitor_printf(mon, "%s: string expected\n", cmd->name);
3044 qdict_put_str(qdict, key, buf);
3049 QemuOptsList *opts_list;
3052 opts_list = qemu_find_opts(key);
3053 if (!opts_list || opts_list->desc->name) {
3056 while (qemu_isspace(*p)) {
3061 if (get_str(buf, sizeof(buf), &p) < 0) {
3064 opts = qemu_opts_parse_noisily(opts_list, buf, true);
3068 qemu_opts_to_qdict(opts, qdict);
3069 qemu_opts_del(opts);
3074 int count, format, size;
3076 while (qemu_isspace(*p))
3082 if (qemu_isdigit(*p)) {
3084 while (qemu_isdigit(*p)) {
3085 count = count * 10 + (*p - '0');
3123 if (*p != '\0' && !qemu_isspace(*p)) {
3124 monitor_printf(mon, "invalid char in format: '%c'\n",
3129 format = default_fmt_format;
3130 if (format != 'i') {
3131 /* for 'i', not specifying a size gives -1 as size */
3133 size = default_fmt_size;
3134 default_fmt_size = size;
3136 default_fmt_format = format;
3139 format = default_fmt_format;
3140 if (format != 'i') {
3141 size = default_fmt_size;
3146 qdict_put_int(qdict, "count", count);
3147 qdict_put_int(qdict, "format", format);
3148 qdict_put_int(qdict, "size", size);
3157 while (qemu_isspace(*p))
3159 if (*typestr == '?' || *typestr == '.') {
3160 if (*typestr == '?') {
3168 while (qemu_isspace(*p))
3177 if (get_expr(mon, &val, &p))
3179 /* Check if 'i' is greater than 32-bit */
3180 if ((c == 'i') && ((val >> 32) & 0xffffffff)) {
3181 monitor_printf(mon, "\'%s\' has failed: ", cmd->name);
3182 monitor_printf(mon, "integer is for 32-bit values\n");
3184 } else if (c == 'M') {
3186 monitor_printf(mon, "enter a positive value\n");
3191 qdict_put_int(qdict, key, val);
3200 while (qemu_isspace(*p)) {
3203 if (*typestr == '?') {
3209 ret = qemu_strtosz_MiB(p, &end, &val);
3210 if (ret < 0 || val > INT64_MAX) {
3211 monitor_printf(mon, "invalid size\n");
3214 qdict_put_int(qdict, key, val);
3222 while (qemu_isspace(*p))
3224 if (*typestr == '?') {
3230 if (get_double(mon, &val, &p) < 0) {
3233 if (p[0] && p[1] == 's') {
3236 val /= 1e3; p += 2; break;
3238 val /= 1e6; p += 2; break;
3240 val /= 1e9; p += 2; break;
3243 if (*p && !qemu_isspace(*p)) {
3244 monitor_printf(mon, "Unknown unit suffix\n");
3247 qdict_put(qdict, key, qnum_from_double(val));
3255 while (qemu_isspace(*p)) {
3259 while (qemu_isgraph(*p)) {
3262 if (p - beg == 2 && !memcmp(beg, "on", p - beg)) {
3264 } else if (p - beg == 3 && !memcmp(beg, "off", p - beg)) {
3267 monitor_printf(mon, "Expected 'on' or 'off'\n");
3270 qdict_put_bool(qdict, key, val);
3275 const char *tmp = p;
3282 while (qemu_isspace(*p))
3287 if(!is_valid_option(p, typestr)) {
3289 monitor_printf(mon, "%s: unsupported option -%c\n",
3301 qdict_put_bool(qdict, key, true);
3308 /* package all remaining string */
3311 while (qemu_isspace(*p)) {
3314 if (*typestr == '?') {
3317 /* no remaining string: NULL argument */
3323 monitor_printf(mon, "%s: string expected\n",
3327 qdict_put_str(qdict, key, p);
3333 monitor_printf(mon, "%s: unknown type '%c'\n", cmd->name, c);
3339 /* check that all arguments were parsed */
3340 while (qemu_isspace(*p))
3343 monitor_printf(mon, "%s: extraneous characters at the end of line\n",
3351 qobject_unref(qdict);
3356 static void handle_hmp_command(Monitor *mon, const char *cmdline)
3359 const mon_cmd_t *cmd;
3360 const char *cmd_start = cmdline;
3362 trace_handle_hmp_command(mon, cmdline);
3364 cmd = monitor_parse_command(mon, cmdline, &cmdline, mon->cmd_table);
3369 qdict = monitor_parse_arguments(mon, &cmdline, cmd);
3371 while (cmdline > cmd_start && qemu_isspace(cmdline[-1])) {
3374 monitor_printf(mon, "Try \"help %.*s\" for more information\n",
3375 (int)(cmdline - cmd_start), cmd_start);
3379 cmd->cmd(mon, qdict);
3380 qobject_unref(qdict);
3383 static void cmd_completion(Monitor *mon, const char *name, const char *list)
3385 const char *p, *pstart;
3392 p = qemu_strchrnul(p, '|');
3394 if (len > sizeof(cmd) - 2)
3395 len = sizeof(cmd) - 2;
3396 memcpy(cmd, pstart, len);
3398 if (name[0] == '\0' || !strncmp(name, cmd, strlen(name))) {
3399 readline_add_completion(mon->rs, cmd);
3407 static void file_completion(Monitor *mon, const char *input)
3412 char file[1024], file_prefix[1024];
3416 p = strrchr(input, '/');
3419 pstrcpy(file_prefix, sizeof(file_prefix), input);
3420 pstrcpy(path, sizeof(path), ".");
3422 input_path_len = p - input + 1;
3423 memcpy(path, input, input_path_len);
3424 if (input_path_len > sizeof(path) - 1)
3425 input_path_len = sizeof(path) - 1;
3426 path[input_path_len] = '\0';
3427 pstrcpy(file_prefix, sizeof(file_prefix), p + 1);
3430 ffs = opendir(path);
3439 if (strcmp(d->d_name, ".") == 0 || strcmp(d->d_name, "..") == 0) {
3443 if (strstart(d->d_name, file_prefix, NULL)) {
3444 memcpy(file, input, input_path_len);
3445 if (input_path_len < sizeof(file))
3446 pstrcpy(file + input_path_len, sizeof(file) - input_path_len,
3448 /* stat the file to find out if it's a directory.
3449 * In that case add a slash to speed up typing long paths
3451 if (stat(file, &sb) == 0 && S_ISDIR(sb.st_mode)) {
3452 pstrcat(file, sizeof(file), "/");
3454 readline_add_completion(mon->rs, file);
3460 static const char *next_arg_type(const char *typestr)
3462 const char *p = strchr(typestr, ':');
3463 return (p != NULL ? ++p : typestr);
3466 static void add_completion_option(ReadLineState *rs, const char *str,
3469 if (!str || !option) {
3472 if (!strncmp(option, str, strlen(str))) {
3473 readline_add_completion(rs, option);
3477 void chardev_add_completion(ReadLineState *rs, int nb_args, const char *str)
3480 ChardevBackendInfoList *list, *start;
3486 readline_set_completion_index(rs, len);
3488 start = list = qmp_query_chardev_backends(NULL);
3490 const char *chr_name = list->value->name;
3492 if (!strncmp(chr_name, str, len)) {
3493 readline_add_completion(rs, chr_name);
3497 qapi_free_ChardevBackendInfoList(start);
3500 void netdev_add_completion(ReadLineState *rs, int nb_args, const char *str)
3509 readline_set_completion_index(rs, len);
3510 for (i = 0; i < NET_CLIENT_DRIVER__MAX; i++) {
3511 add_completion_option(rs, str, NetClientDriver_str(i));
3515 void device_add_completion(ReadLineState *rs, int nb_args, const char *str)
3525 readline_set_completion_index(rs, len);
3526 list = elt = object_class_get_list(TYPE_DEVICE, false);
3529 DeviceClass *dc = OBJECT_CLASS_CHECK(DeviceClass, elt->data,
3531 name = object_class_get_name(OBJECT_CLASS(dc));
3533 if (dc->user_creatable
3534 && !strncmp(name, str, len)) {
3535 readline_add_completion(rs, name);
3542 void object_add_completion(ReadLineState *rs, int nb_args, const char *str)
3552 readline_set_completion_index(rs, len);
3553 list = elt = object_class_get_list(TYPE_USER_CREATABLE, false);
3557 name = object_class_get_name(OBJECT_CLASS(elt->data));
3558 if (!strncmp(name, str, len) && strcmp(name, TYPE_USER_CREATABLE)) {
3559 readline_add_completion(rs, name);
3566 static void peripheral_device_del_completion(ReadLineState *rs,
3567 const char *str, size_t len)
3569 Object *peripheral = container_get(qdev_get_machine(), "/peripheral");
3570 GSList *list, *item;
3572 list = qdev_build_hotpluggable_device_list(peripheral);
3577 for (item = list; item; item = g_slist_next(item)) {
3578 DeviceState *dev = item->data;
3580 if (dev->id && !strncmp(str, dev->id, len)) {
3581 readline_add_completion(rs, dev->id);
3588 void chardev_remove_completion(ReadLineState *rs, int nb_args, const char *str)
3591 ChardevInfoList *list, *start;
3597 readline_set_completion_index(rs, len);
3599 start = list = qmp_query_chardev(NULL);
3601 ChardevInfo *chr = list->value;
3603 if (!strncmp(chr->label, str, len)) {
3604 readline_add_completion(rs, chr->label);
3608 qapi_free_ChardevInfoList(start);
3611 static void ringbuf_completion(ReadLineState *rs, const char *str)
3614 ChardevInfoList *list, *start;
3617 readline_set_completion_index(rs, len);
3619 start = list = qmp_query_chardev(NULL);
3621 ChardevInfo *chr_info = list->value;
3623 if (!strncmp(chr_info->label, str, len)) {
3624 Chardev *chr = qemu_chr_find(chr_info->label);
3625 if (chr && CHARDEV_IS_RINGBUF(chr)) {
3626 readline_add_completion(rs, chr_info->label);
3631 qapi_free_ChardevInfoList(start);
3634 void ringbuf_write_completion(ReadLineState *rs, int nb_args, const char *str)
3639 ringbuf_completion(rs, str);
3642 void device_del_completion(ReadLineState *rs, int nb_args, const char *str)
3651 readline_set_completion_index(rs, len);
3652 peripheral_device_del_completion(rs, str, len);
3655 void object_del_completion(ReadLineState *rs, int nb_args, const char *str)
3657 ObjectPropertyInfoList *list, *start;
3664 readline_set_completion_index(rs, len);
3666 start = list = qmp_qom_list("/objects", NULL);
3668 ObjectPropertyInfo *info = list->value;
3670 if (!strncmp(info->type, "child<", 5)
3671 && !strncmp(info->name, str, len)) {
3672 readline_add_completion(rs, info->name);
3676 qapi_free_ObjectPropertyInfoList(start);
3679 void sendkey_completion(ReadLineState *rs, int nb_args, const char *str)
3688 sep = strrchr(str, '-');
3693 readline_set_completion_index(rs, len);
3694 for (i = 0; i < Q_KEY_CODE__MAX; i++) {
3695 if (!strncmp(str, QKeyCode_str(i), len)) {
3696 readline_add_completion(rs, QKeyCode_str(i));
3701 void set_link_completion(ReadLineState *rs, int nb_args, const char *str)
3706 readline_set_completion_index(rs, len);
3708 NetClientState *ncs[MAX_QUEUE_NUM];
3710 count = qemu_find_net_clients_except(NULL, ncs,
3711 NET_CLIENT_DRIVER_NONE,
3713 for (i = 0; i < MIN(count, MAX_QUEUE_NUM); i++) {
3714 const char *name = ncs[i]->name;
3715 if (!strncmp(str, name, len)) {
3716 readline_add_completion(rs, name);
3719 } else if (nb_args == 3) {
3720 add_completion_option(rs, str, "on");
3721 add_completion_option(rs, str, "off");
3725 void netdev_del_completion(ReadLineState *rs, int nb_args, const char *str)
3728 NetClientState *ncs[MAX_QUEUE_NUM];
3735 readline_set_completion_index(rs, len);
3736 count = qemu_find_net_clients_except(NULL, ncs, NET_CLIENT_DRIVER_NIC,
3738 for (i = 0; i < MIN(count, MAX_QUEUE_NUM); i++) {
3740 const char *name = ncs[i]->name;
3741 if (strncmp(str, name, len)) {
3744 opts = qemu_opts_find(qemu_find_opts_err("netdev", NULL), name);
3746 readline_add_completion(rs, name);
3751 void info_trace_events_completion(ReadLineState *rs, int nb_args, const char *str)
3756 readline_set_completion_index(rs, len);
3758 TraceEventIter iter;
3760 char *pattern = g_strdup_printf("%s*", str);
3761 trace_event_iter_init(&iter, pattern);
3762 while ((ev = trace_event_iter_next(&iter)) != NULL) {
3763 readline_add_completion(rs, trace_event_get_name(ev));
3769 void trace_event_completion(ReadLineState *rs, int nb_args, const char *str)
3774 readline_set_completion_index(rs, len);
3776 TraceEventIter iter;
3778 char *pattern = g_strdup_printf("%s*", str);
3779 trace_event_iter_init(&iter, pattern);
3780 while ((ev = trace_event_iter_next(&iter)) != NULL) {
3781 readline_add_completion(rs, trace_event_get_name(ev));
3784 } else if (nb_args == 3) {
3785 add_completion_option(rs, str, "on");
3786 add_completion_option(rs, str, "off");
3790 void watchdog_action_completion(ReadLineState *rs, int nb_args, const char *str)
3797 readline_set_completion_index(rs, strlen(str));
3798 for (i = 0; i < WATCHDOG_ACTION__MAX; i++) {
3799 add_completion_option(rs, str, WatchdogAction_str(i));
3803 void migrate_set_capability_completion(ReadLineState *rs, int nb_args,
3809 readline_set_completion_index(rs, len);
3812 for (i = 0; i < MIGRATION_CAPABILITY__MAX; i++) {
3813 const char *name = MigrationCapability_str(i);
3814 if (!strncmp(str, name, len)) {
3815 readline_add_completion(rs, name);
3818 } else if (nb_args == 3) {
3819 add_completion_option(rs, str, "on");
3820 add_completion_option(rs, str, "off");
3824 void migrate_set_parameter_completion(ReadLineState *rs, int nb_args,
3830 readline_set_completion_index(rs, len);
3833 for (i = 0; i < MIGRATION_PARAMETER__MAX; i++) {
3834 const char *name = MigrationParameter_str(i);
3835 if (!strncmp(str, name, len)) {
3836 readline_add_completion(rs, name);
3842 static void vm_completion(ReadLineState *rs, const char *str)
3845 BlockDriverState *bs;
3846 BdrvNextIterator it;
3849 readline_set_completion_index(rs, len);
3851 for (bs = bdrv_first(&it); bs; bs = bdrv_next(&it)) {
3852 SnapshotInfoList *snapshots, *snapshot;
3853 AioContext *ctx = bdrv_get_aio_context(bs);
3856 aio_context_acquire(ctx);
3857 if (bdrv_can_snapshot(bs)) {
3858 ok = bdrv_query_snapshot_info_list(bs, &snapshots, NULL) == 0;
3860 aio_context_release(ctx);
3865 snapshot = snapshots;
3867 char *completion = snapshot->value->name;
3868 if (!strncmp(str, completion, len)) {
3869 readline_add_completion(rs, completion);
3871 completion = snapshot->value->id;
3872 if (!strncmp(str, completion, len)) {
3873 readline_add_completion(rs, completion);
3875 snapshot = snapshot->next;
3877 qapi_free_SnapshotInfoList(snapshots);
3882 void delvm_completion(ReadLineState *rs, int nb_args, const char *str)
3885 vm_completion(rs, str);
3889 void loadvm_completion(ReadLineState *rs, int nb_args, const char *str)
3892 vm_completion(rs, str);
3896 static void monitor_find_completion_by_table(Monitor *mon,
3897 const mon_cmd_t *cmd_table,
3901 const char *cmdname;
3903 const char *ptype, *old_ptype, *str, *name;
3904 const mon_cmd_t *cmd;
3905 BlockBackend *blk = NULL;
3908 /* command completion */
3913 readline_set_completion_index(mon->rs, strlen(cmdname));
3914 for (cmd = cmd_table; cmd->name != NULL; cmd++) {
3915 if (!runstate_check(RUN_STATE_PRECONFIG) ||
3916 cmd_can_preconfig(cmd)) {
3917 cmd_completion(mon, cmdname, cmd->name);
3921 /* find the command */
3922 for (cmd = cmd_table; cmd->name != NULL; cmd++) {
3923 if (compare_cmd(args[0], cmd->name) &&
3924 (!runstate_check(RUN_STATE_PRECONFIG) ||
3925 cmd_can_preconfig(cmd))) {
3933 if (cmd->sub_table) {
3934 /* do the job again */
3935 monitor_find_completion_by_table(mon, cmd->sub_table,
3936 &args[1], nb_args - 1);
3939 if (cmd->command_completion) {
3940 cmd->command_completion(mon->rs, nb_args, args[nb_args - 1]);
3944 ptype = next_arg_type(cmd->args_type);
3945 for(i = 0; i < nb_args - 2; i++) {
3946 if (*ptype != '\0') {
3947 ptype = next_arg_type(ptype);
3948 while (*ptype == '?')
3949 ptype = next_arg_type(ptype);
3952 str = args[nb_args - 1];
3954 while (*ptype == '-' && old_ptype != ptype) {
3956 ptype = next_arg_type(ptype);
3960 /* file completion */
3961 readline_set_completion_index(mon->rs, strlen(str));
3962 file_completion(mon, str);
3965 /* block device name completion */
3966 readline_set_completion_index(mon->rs, strlen(str));
3967 while ((blk = blk_next(blk)) != NULL) {
3968 name = blk_name(blk);
3969 if (str[0] == '\0' ||
3970 !strncmp(name, str, strlen(str))) {
3971 readline_add_completion(mon->rs, name);
3977 if (!strcmp(cmd->name, "help|?")) {
3978 monitor_find_completion_by_table(mon, cmd_table,
3979 &args[1], nb_args - 1);
3988 static void monitor_find_completion(void *opaque,
3989 const char *cmdline)
3991 Monitor *mon = opaque;
3992 char *args[MAX_ARGS];
3995 /* 1. parse the cmdline */
3996 if (parse_cmdline(cmdline, &nb_args, args) < 0) {
4000 /* if the line ends with a space, it means we want to complete the
4002 len = strlen(cmdline);
4003 if (len > 0 && qemu_isspace(cmdline[len - 1])) {
4004 if (nb_args >= MAX_ARGS) {
4007 args[nb_args++] = g_strdup("");
4010 /* 2. auto complete according to args */
4011 monitor_find_completion_by_table(mon, mon->cmd_table, args, nb_args);
4014 free_cmdline_args(args, nb_args);
4017 static int monitor_can_read(void *opaque)
4019 Monitor *mon = opaque;
4021 return !atomic_mb_read(&mon->suspend_cnt);
4025 * Emit QMP response @rsp with ID @id to @mon.
4026 * Null @rsp can only happen for commands with QCO_NO_SUCCESS_RESP.
4027 * Nothing is emitted then.
4029 static void monitor_qmp_respond(Monitor *mon, QDict *rsp, QObject *id)
4033 qdict_put_obj(rsp, "id", qobject_ref(id));
4036 qmp_send_response(mon, rsp);
4040 static void monitor_qmp_dispatch(Monitor *mon, QObject *req, QObject *id)
4049 rsp = qmp_dispatch(mon->qmp.commands, req, qmp_oob_enabled(mon));
4053 if (mon->qmp.commands == &qmp_cap_negotiation_commands) {
4054 error = qdict_get_qdict(rsp, "error");
4056 && !g_strcmp0(qdict_get_try_str(error, "class"),
4057 QapiErrorClass_str(ERROR_CLASS_COMMAND_NOT_FOUND))) {
4058 /* Provide a more useful error message */
4059 qdict_del(error, "desc");
4060 qdict_put_str(error, "desc", "Expecting capabilities negotiation"
4061 " with 'qmp_capabilities'");
4065 monitor_qmp_respond(mon, rsp, id);
4070 * Pop a QMP request from a monitor request queue.
4071 * Return the request, or NULL all request queues are empty.
4072 * We are using round-robin fashion to pop the request, to avoid
4073 * processing commands only on a very busy monitor. To achieve that,
4074 * when we process one request on a specific monitor, we put that
4075 * monitor to the end of mon_list queue.
4077 * Note: if the function returned with non-NULL, then the caller will
4078 * be with mon->qmp.qmp_queue_lock held, and the caller is responsible
4081 static QMPRequest *monitor_qmp_requests_pop_any_with_lock(void)
4083 QMPRequest *req_obj = NULL;
4086 qemu_mutex_lock(&monitor_lock);
4088 QTAILQ_FOREACH(mon, &mon_list, entry) {
4089 qemu_mutex_lock(&mon->qmp.qmp_queue_lock);
4090 req_obj = g_queue_pop_head(mon->qmp.qmp_requests);
4092 /* With the lock of corresponding queue held */
4095 qemu_mutex_unlock(&mon->qmp.qmp_queue_lock);
4100 * We found one request on the monitor. Degrade this monitor's
4101 * priority to lowest by re-inserting it to end of queue.
4103 QTAILQ_REMOVE(&mon_list, mon, entry);
4104 QTAILQ_INSERT_TAIL(&mon_list, mon, entry);
4107 qemu_mutex_unlock(&monitor_lock);
4112 static void monitor_qmp_bh_dispatcher(void *data)
4114 QMPRequest *req_obj = monitor_qmp_requests_pop_any_with_lock();
4124 /* qmp_oob_enabled() might change after "qmp_capabilities" */
4125 need_resume = !qmp_oob_enabled(mon) ||
4126 mon->qmp.qmp_requests->length == QMP_REQ_QUEUE_LEN_MAX - 1;
4127 qemu_mutex_unlock(&mon->qmp.qmp_queue_lock);
4129 trace_monitor_qmp_cmd_in_band(qobject_get_try_str(req_obj->id) ?: "");
4130 monitor_qmp_dispatch(mon, req_obj->req, req_obj->id);
4132 assert(req_obj->err);
4133 rsp = qmp_error_response(req_obj->err);
4134 req_obj->err = NULL;
4135 monitor_qmp_respond(mon, rsp, NULL);
4140 /* Pairs with the monitor_suspend() in handle_qmp_command() */
4141 monitor_resume(mon);
4143 qmp_request_free(req_obj);
4145 /* Reschedule instead of looping so the main loop stays responsive */
4146 qemu_bh_schedule(qmp_dispatcher_bh);
4149 static void handle_qmp_command(void *opaque, QObject *req, Error *err)
4151 Monitor *mon = opaque;
4154 QMPRequest *req_obj;
4156 assert(!req != !err);
4158 qdict = qobject_to(QDict, req);
4160 id = qobject_ref(qdict_get(qdict, "id"));
4161 qdict_del(qdict, "id");
4162 } /* else will fail qmp_dispatch() */
4164 if (req && trace_event_get_state_backends(TRACE_HANDLE_QMP_COMMAND)) {
4165 QString *req_json = qobject_to_json(req);
4166 trace_handle_qmp_command(mon, qstring_get_str(req_json));
4167 qobject_unref(req_json);
4170 if (qdict && qmp_is_oob(qdict)) {
4171 /* OOB commands are executed immediately */
4172 trace_monitor_qmp_cmd_out_of_band(qobject_get_try_str(id)
4174 monitor_qmp_dispatch(mon, req, id);
4180 req_obj = g_new0(QMPRequest, 1);
4186 /* Protect qmp_requests and fetching its length. */
4187 qemu_mutex_lock(&mon->qmp.qmp_queue_lock);
4190 * Suspend the monitor when we can't queue more requests after
4191 * this one. Dequeuing in monitor_qmp_bh_dispatcher() will resume
4192 * it. Note that when OOB is disabled, we queue at most one
4193 * command, for backward compatibility.
4195 if (!qmp_oob_enabled(mon) ||
4196 mon->qmp.qmp_requests->length == QMP_REQ_QUEUE_LEN_MAX - 1) {
4197 monitor_suspend(mon);
4201 * Put the request to the end of queue so that requests will be
4202 * handled in time order. Ownership for req_obj, req, id,
4203 * etc. will be delivered to the handler side.
4205 assert(mon->qmp.qmp_requests->length < QMP_REQ_QUEUE_LEN_MAX);
4206 g_queue_push_tail(mon->qmp.qmp_requests, req_obj);
4207 qemu_mutex_unlock(&mon->qmp.qmp_queue_lock);
4209 /* Kick the dispatcher routine */
4210 qemu_bh_schedule(qmp_dispatcher_bh);
4213 static void monitor_qmp_read(void *opaque, const uint8_t *buf, int size)
4215 Monitor *mon = opaque;
4217 json_message_parser_feed(&mon->qmp.parser, (const char *) buf, size);
4220 static void monitor_read(void *opaque, const uint8_t *buf, int size)
4222 Monitor *old_mon = cur_mon;
4228 for (i = 0; i < size; i++)
4229 readline_handle_byte(cur_mon->rs, buf[i]);
4231 if (size == 0 || buf[size - 1] != 0)
4232 monitor_printf(cur_mon, "corrupted command\n");
4234 handle_hmp_command(cur_mon, (char *)buf);
4240 static void monitor_command_cb(void *opaque, const char *cmdline,
4241 void *readline_opaque)
4243 Monitor *mon = opaque;
4245 monitor_suspend(mon);
4246 handle_hmp_command(mon, cmdline);
4247 monitor_resume(mon);
4250 int monitor_suspend(Monitor *mon)
4252 if (monitor_is_hmp_non_interactive(mon)) {
4256 atomic_inc(&mon->suspend_cnt);
4258 if (mon->use_io_thread) {
4260 * Kick I/O thread to make sure this takes effect. It'll be
4261 * evaluated again in prepare() of the watch object.
4263 aio_notify(iothread_get_aio_context(mon_iothread));
4266 trace_monitor_suspend(mon, 1);
4270 static void monitor_accept_input(void *opaque)
4272 Monitor *mon = opaque;
4274 qemu_chr_fe_accept_input(&mon->chr);
4277 void monitor_resume(Monitor *mon)
4279 if (monitor_is_hmp_non_interactive(mon)) {
4283 if (atomic_dec_fetch(&mon->suspend_cnt) == 0) {
4286 if (mon->use_io_thread) {
4287 ctx = iothread_get_aio_context(mon_iothread);
4289 ctx = qemu_get_aio_context();
4292 if (!monitor_is_qmp(mon)) {
4294 readline_show_prompt(mon->rs);
4297 aio_bh_schedule_oneshot(ctx, monitor_accept_input, mon);
4300 trace_monitor_suspend(mon, -1);
4303 static QDict *qmp_greeting(Monitor *mon)
4305 QList *cap_list = qlist_new();
4306 QObject *ver = NULL;
4309 qmp_marshal_query_version(NULL, &ver, NULL);
4311 for (cap = 0; cap < QMP_CAPABILITY__MAX; cap++) {
4312 if (mon->qmp.capab_offered[cap]) {
4313 qlist_append_str(cap_list, QMPCapability_str(cap));
4317 return qdict_from_jsonf_nofail(
4318 "{'QMP': {'version': %p, 'capabilities': %p}}",
4322 static void monitor_qmp_event(void *opaque, int event)
4325 Monitor *mon = opaque;
4328 case CHR_EVENT_OPENED:
4329 mon->qmp.commands = &qmp_cap_negotiation_commands;
4330 monitor_qmp_caps_reset(mon);
4331 data = qmp_greeting(mon);
4332 qmp_send_response(mon, data);
4333 qobject_unref(data);
4336 case CHR_EVENT_CLOSED:
4338 * Note: this is only useful when the output of the chardev
4339 * backend is still open. For example, when the backend is
4340 * stdio, it's possible that stdout is still open when stdin
4343 monitor_qmp_cleanup_queues(mon);
4344 json_message_parser_destroy(&mon->qmp.parser);
4345 json_message_parser_init(&mon->qmp.parser, handle_qmp_command,
4348 monitor_fdsets_cleanup();
4353 static void monitor_event(void *opaque, int event)
4355 Monitor *mon = opaque;
4358 case CHR_EVENT_MUX_IN:
4359 qemu_mutex_lock(&mon->mon_lock);
4361 qemu_mutex_unlock(&mon->mon_lock);
4362 if (mon->reset_seen) {
4363 readline_restart(mon->rs);
4364 monitor_resume(mon);
4367 atomic_mb_set(&mon->suspend_cnt, 0);
4371 case CHR_EVENT_MUX_OUT:
4372 if (mon->reset_seen) {
4373 if (atomic_mb_read(&mon->suspend_cnt) == 0) {
4374 monitor_printf(mon, "\n");
4377 monitor_suspend(mon);
4379 atomic_inc(&mon->suspend_cnt);
4381 qemu_mutex_lock(&mon->mon_lock);
4383 qemu_mutex_unlock(&mon->mon_lock);
4386 case CHR_EVENT_OPENED:
4387 monitor_printf(mon, "QEMU %s monitor - type 'help' for more "
4388 "information\n", QEMU_VERSION);
4389 if (!mon->mux_out) {
4390 readline_restart(mon->rs);
4391 readline_show_prompt(mon->rs);
4393 mon->reset_seen = 1;
4397 case CHR_EVENT_CLOSED:
4399 monitor_fdsets_cleanup();
4405 compare_mon_cmd(const void *a, const void *b)
4407 return strcmp(((const mon_cmd_t *)a)->name,
4408 ((const mon_cmd_t *)b)->name);
4411 static void sortcmdlist(void)
4414 int elem_size = sizeof(mon_cmd_t);
4416 array_num = sizeof(mon_cmds)/elem_size-1;
4417 qsort((void *)mon_cmds, array_num, elem_size, compare_mon_cmd);
4419 array_num = sizeof(info_cmds)/elem_size-1;
4420 qsort((void *)info_cmds, array_num, elem_size, compare_mon_cmd);
4423 static void monitor_iothread_init(void)
4425 mon_iothread = iothread_create("mon_iothread", &error_abort);
4428 void monitor_init_globals(void)
4430 monitor_init_qmp_commands();
4431 monitor_qapi_event_init();
4433 qemu_mutex_init(&monitor_lock);
4434 qemu_mutex_init(&mon_fdsets_lock);
4437 * The dispatcher BH must run in the main loop thread, since we
4438 * have commands assuming that context. It would be nice to get
4439 * rid of those assumptions.
4441 qmp_dispatcher_bh = aio_bh_new(iohandler_get_aio_context(),
4442 monitor_qmp_bh_dispatcher,
4446 /* These functions just adapt the readline interface in a typesafe way. We
4447 * could cast function pointers but that discards compiler checks.
4449 static void GCC_FMT_ATTR(2, 3) monitor_readline_printf(void *opaque,
4450 const char *fmt, ...)
4454 monitor_vprintf(opaque, fmt, ap);
4458 static void monitor_readline_flush(void *opaque)
4460 monitor_flush(opaque);
4464 * Print to current monitor if we have one, else to stream.
4465 * TODO should return int, so callers can calculate width, but that
4466 * requires surgery to monitor_vprintf(). Left for another day.
4468 void monitor_vfprintf(FILE *stream, const char *fmt, va_list ap)
4470 if (cur_mon && !monitor_cur_is_qmp()) {
4471 monitor_vprintf(cur_mon, fmt, ap);
4473 vfprintf(stream, fmt, ap);
4478 * Print to current monitor if we have one, else to stderr.
4479 * TODO should return int, so callers can calculate width, but that
4480 * requires surgery to monitor_vprintf(). Left for another day.
4482 void error_vprintf(const char *fmt, va_list ap)
4484 monitor_vfprintf(stderr, fmt, ap);
4487 void error_vprintf_unless_qmp(const char *fmt, va_list ap)
4489 if (cur_mon && !monitor_cur_is_qmp()) {
4490 monitor_vprintf(cur_mon, fmt, ap);
4491 } else if (!cur_mon) {
4492 vfprintf(stderr, fmt, ap);
4496 static void monitor_list_append(Monitor *mon)
4498 qemu_mutex_lock(&monitor_lock);
4500 * This prevents inserting new monitors during monitor_cleanup().
4501 * A cleaner solution would involve the main thread telling other
4502 * threads to terminate, waiting for their termination.
4504 if (!monitor_destroyed) {
4505 QTAILQ_INSERT_HEAD(&mon_list, mon, entry);
4508 qemu_mutex_unlock(&monitor_lock);
4511 monitor_data_destroy(mon);
4516 static void monitor_qmp_setup_handlers_bh(void *opaque)
4518 Monitor *mon = opaque;
4519 GMainContext *context;
4521 assert(mon->use_io_thread);
4522 context = iothread_get_g_main_context(mon_iothread);
4524 qemu_chr_fe_set_handlers(&mon->chr, monitor_can_read, monitor_qmp_read,
4525 monitor_qmp_event, NULL, mon, context, true);
4526 monitor_list_append(mon);
4529 void monitor_init(Chardev *chr, int flags)
4531 Monitor *mon = g_malloc(sizeof(*mon));
4532 bool use_readline = flags & MONITOR_USE_READLINE;
4534 /* Note: we run QMP monitor in I/O thread when @chr supports that */
4535 monitor_data_init(mon, false,
4536 (flags & MONITOR_USE_CONTROL)
4537 && qemu_chr_has_feature(chr,
4538 QEMU_CHAR_FEATURE_GCONTEXT));
4540 qemu_chr_fe_init(&mon->chr, chr, &error_abort);
4543 mon->rs = readline_init(monitor_readline_printf,
4544 monitor_readline_flush,
4546 monitor_find_completion);
4547 monitor_read_command(mon, 0);
4550 if (monitor_is_qmp(mon)) {
4551 qemu_chr_fe_set_echo(&mon->chr, true);
4552 json_message_parser_init(&mon->qmp.parser, handle_qmp_command,
4554 if (mon->use_io_thread) {
4556 * Make sure the old iowatch is gone. It's possible when
4557 * e.g. the chardev is in client mode, with wait=on.
4559 remove_fd_in_watch(chr);
4561 * We can't call qemu_chr_fe_set_handlers() directly here
4562 * since chardev might be running in the monitor I/O
4563 * thread. Schedule a bottom half.
4565 aio_bh_schedule_oneshot(iothread_get_aio_context(mon_iothread),
4566 monitor_qmp_setup_handlers_bh, mon);
4567 /* The bottom half will add @mon to @mon_list */
4570 qemu_chr_fe_set_handlers(&mon->chr, monitor_can_read,
4571 monitor_qmp_read, monitor_qmp_event,
4572 NULL, mon, NULL, true);
4575 qemu_chr_fe_set_handlers(&mon->chr, monitor_can_read, monitor_read,
4576 monitor_event, NULL, mon, NULL, true);
4579 monitor_list_append(mon);
4582 void monitor_cleanup(void)
4585 * We need to explicitly stop the I/O thread (but not destroy it),
4586 * clean up the monitor resources, then destroy the I/O thread since
4587 * we need to unregister from chardev below in
4588 * monitor_data_destroy(), and chardev is not thread-safe yet
4591 iothread_stop(mon_iothread);
4594 /* Flush output buffers and destroy monitors */
4595 qemu_mutex_lock(&monitor_lock);
4596 monitor_destroyed = true;
4597 while (!QTAILQ_EMPTY(&mon_list)) {
4598 Monitor *mon = QTAILQ_FIRST(&mon_list);
4599 QTAILQ_REMOVE(&mon_list, mon, entry);
4600 /* Permit QAPI event emission from character frontend release */
4601 qemu_mutex_unlock(&monitor_lock);
4603 monitor_data_destroy(mon);
4604 qemu_mutex_lock(&monitor_lock);
4607 qemu_mutex_unlock(&monitor_lock);
4609 /* QEMUBHs needs to be deleted before destroying the I/O thread */
4610 qemu_bh_delete(qmp_dispatcher_bh);
4611 qmp_dispatcher_bh = NULL;
4613 iothread_destroy(mon_iothread);
4614 mon_iothread = NULL;
4618 QemuOptsList qemu_mon_opts = {
4620 .implied_opt_name = "chardev",
4621 .head = QTAILQ_HEAD_INITIALIZER(qemu_mon_opts.head),
4625 .type = QEMU_OPT_STRING,
4628 .type = QEMU_OPT_STRING,
4631 .type = QEMU_OPT_BOOL,
4633 { /* end of list */ }
4637 HotpluggableCPUList *qmp_query_hotpluggable_cpus(Error **errp)
4639 MachineState *ms = MACHINE(qdev_get_machine());
4640 MachineClass *mc = MACHINE_GET_CLASS(ms);
4642 if (!mc->has_hotpluggable_cpus) {
4643 error_setg(errp, QERR_FEATURE_DISABLED, "query-hotpluggable-cpus");
4647 return machine_query_hotpluggable_cpus(ms);