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-streamer.h"
62 #include "qapi/qmp/json-parser.h"
63 #include "qapi/qmp/qlist.h"
64 #include "qom/object_interfaces.h"
65 #include "trace-root.h"
66 #include "trace/control.h"
67 #include "monitor/hmp-target.h"
68 #ifdef CONFIG_TRACE_SIMPLE
69 #include "trace/simple.h"
71 #include "exec/memory.h"
72 #include "exec/exec-all.h"
74 #include "qemu/option.h"
76 #include "qemu/thread.h"
77 #include "block/qapi.h"
78 #include "qapi/qapi-commands.h"
79 #include "qapi/qapi-events.h"
80 #include "qapi/error.h"
81 #include "qapi/qmp-event.h"
82 #include "qapi/qapi-introspect.h"
83 #include "sysemu/qtest.h"
84 #include "sysemu/cpus.h"
85 #include "sysemu/iothread.h"
86 #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 * When command qmp_capabilities succeeds, we go into command
175 QmpCommandList *commands;
176 bool qmp_caps[QMP_CAPABILITY__MAX];
178 * Protects qmp request/response queue. Please take monitor_lock
179 * first when used together.
181 QemuMutex qmp_queue_lock;
182 /* Input queue that holds all the parsed QMP requests */
183 GQueue *qmp_requests;
184 /* Output queue contains all the QMP responses in order */
185 GQueue *qmp_responses;
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 * Fields 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 IOThread *mon_iothread;
245 /* Bottom half to dispatch the requests received from I/O thread */
246 QEMUBH *qmp_dispatcher_bh;
248 /* Bottom half to deliver the responses back to clients */
249 QEMUBH *qmp_respond_bh;
252 /* Owner of the request */
254 /* "id" field of the request */
257 * Request object to be handled or Error to be reported
258 * (exactly one of them is non-null)
263 * Whether we need to resume the monitor afterward. This flag is
264 * used to emulate the old QMP server behavior that the current
265 * command must be completed before execution of the next one.
269 typedef struct QMPRequest QMPRequest;
271 /* QMP checker flags */
272 #define QMP_ACCEPT_UNKNOWNS 1
274 /* Protects mon_list, monitor_qapi_event_state. */
275 static QemuMutex monitor_lock;
276 static GHashTable *monitor_qapi_event_state;
277 static QTAILQ_HEAD(mon_list, Monitor) mon_list;
279 /* Protects mon_fdsets */
280 static QemuMutex mon_fdsets_lock;
281 static QLIST_HEAD(mon_fdsets, MonFdset) mon_fdsets;
283 static int mon_refcount;
285 static mon_cmd_t mon_cmds[];
286 static mon_cmd_t info_cmds[];
288 QmpCommandList qmp_commands, qmp_cap_negotiation_commands;
292 static void monitor_command_cb(void *opaque, const char *cmdline,
293 void *readline_opaque);
296 * Is @mon a QMP monitor?
298 static inline bool monitor_is_qmp(const Monitor *mon)
300 return (mon->flags & MONITOR_USE_CONTROL);
304 * Whether @mon is using readline? Note: not all HMP monitors use
305 * readline, e.g., gdbserver has a non-interactive HMP monitor, so
306 * readline is not used there.
308 static inline bool monitor_uses_readline(const Monitor *mon)
310 return mon->flags & MONITOR_USE_READLINE;
313 static inline bool monitor_is_hmp_non_interactive(const Monitor *mon)
315 return !monitor_is_qmp(mon) && !monitor_uses_readline(mon);
319 * Return the clock to use for recording an event's time.
320 * Beware: result is invalid before configure_accelerator().
322 static inline QEMUClockType monitor_get_event_clock(void)
325 * This allows us to perform tests on the monitor queues to verify
326 * that the rate limits are enforced.
328 return qtest_enabled() ? QEMU_CLOCK_VIRTUAL : QEMU_CLOCK_REALTIME;
332 * Is the current monitor, if any, a QMP monitor?
334 bool monitor_cur_is_qmp(void)
336 return cur_mon && monitor_is_qmp(cur_mon);
339 void monitor_read_command(Monitor *mon, int show_prompt)
344 readline_start(mon->rs, "(qemu) ", 0, monitor_command_cb, NULL);
346 readline_show_prompt(mon->rs);
349 int monitor_read_password(Monitor *mon, ReadLineFunc *readline_func,
353 readline_start(mon->rs, "Password: ", 1, readline_func, opaque);
354 /* prompt is printed on return from the command handler */
357 monitor_printf(mon, "terminal does not support password prompting\n");
362 static void qmp_request_free(QMPRequest *req)
364 qobject_unref(req->id);
365 qobject_unref(req->req);
366 error_free(req->err);
370 /* Must with the mon->qmp.qmp_queue_lock held */
371 static void monitor_qmp_cleanup_req_queue_locked(Monitor *mon)
373 while (!g_queue_is_empty(mon->qmp.qmp_requests)) {
374 qmp_request_free(g_queue_pop_head(mon->qmp.qmp_requests));
378 /* Must with the mon->qmp.qmp_queue_lock held */
379 static void monitor_qmp_cleanup_resp_queue_locked(Monitor *mon)
381 while (!g_queue_is_empty(mon->qmp.qmp_responses)) {
382 qobject_unref((QDict *)g_queue_pop_head(mon->qmp.qmp_responses));
386 static void monitor_qmp_cleanup_queues(Monitor *mon)
388 qemu_mutex_lock(&mon->qmp.qmp_queue_lock);
389 monitor_qmp_cleanup_req_queue_locked(mon);
390 monitor_qmp_cleanup_resp_queue_locked(mon);
391 qemu_mutex_unlock(&mon->qmp.qmp_queue_lock);
395 static void monitor_flush_locked(Monitor *mon);
397 static gboolean monitor_unblocked(GIOChannel *chan, GIOCondition cond,
400 Monitor *mon = opaque;
402 qemu_mutex_lock(&mon->mon_lock);
404 monitor_flush_locked(mon);
405 qemu_mutex_unlock(&mon->mon_lock);
409 /* Called with mon->mon_lock held. */
410 static void monitor_flush_locked(Monitor *mon)
416 if (mon->skip_flush) {
420 buf = qstring_get_str(mon->outbuf);
421 len = qstring_get_length(mon->outbuf);
423 if (len && !mon->mux_out) {
424 rc = qemu_chr_fe_write(&mon->chr, (const uint8_t *) buf, len);
425 if ((rc < 0 && errno != EAGAIN) || (rc == len)) {
426 /* all flushed or error */
427 qobject_unref(mon->outbuf);
428 mon->outbuf = qstring_new();
433 QString *tmp = qstring_from_str(buf + rc);
434 qobject_unref(mon->outbuf);
437 if (mon->out_watch == 0) {
439 qemu_chr_fe_add_watch(&mon->chr, G_IO_OUT | G_IO_HUP,
440 monitor_unblocked, mon);
445 void monitor_flush(Monitor *mon)
447 qemu_mutex_lock(&mon->mon_lock);
448 monitor_flush_locked(mon);
449 qemu_mutex_unlock(&mon->mon_lock);
452 /* flush at every end of line */
453 static void monitor_puts(Monitor *mon, const char *str)
457 qemu_mutex_lock(&mon->mon_lock);
463 qstring_append_chr(mon->outbuf, '\r');
465 qstring_append_chr(mon->outbuf, c);
467 monitor_flush_locked(mon);
470 qemu_mutex_unlock(&mon->mon_lock);
473 void monitor_vprintf(Monitor *mon, const char *fmt, va_list ap)
480 if (monitor_is_qmp(mon)) {
484 buf = g_strdup_vprintf(fmt, ap);
485 monitor_puts(mon, buf);
489 void monitor_printf(Monitor *mon, const char *fmt, ...)
493 monitor_vprintf(mon, fmt, ap);
497 int monitor_fprintf(FILE *stream, const char *fmt, ...)
501 monitor_vprintf((Monitor *)stream, fmt, ap);
506 static void qmp_send_response(Monitor *mon, QDict *rsp)
508 QObject *data = QOBJECT(rsp);
511 json = mon->flags & MONITOR_USE_PRETTY ? qobject_to_json_pretty(data) :
512 qobject_to_json(data);
513 assert(json != NULL);
515 qstring_append_chr(json, '\n');
516 monitor_puts(mon, qstring_get_str(json));
521 static void qmp_queue_response(Monitor *mon, QDict *rsp)
523 if (mon->use_io_thread) {
525 * If using I/O thread, we need to queue the item so that I/O
526 * thread will do the rest for us. Take refcount so that
527 * caller won't free the data (which will be finally freed in
530 qemu_mutex_lock(&mon->qmp.qmp_queue_lock);
531 g_queue_push_tail(mon->qmp.qmp_responses, qobject_ref(rsp));
532 qemu_mutex_unlock(&mon->qmp.qmp_queue_lock);
533 qemu_bh_schedule(qmp_respond_bh);
536 * If not using monitor I/O thread, then we are in main thread.
537 * Do the emission right away.
539 qmp_send_response(mon, rsp);
547 typedef struct QMPResponse QMPResponse;
549 static QDict *monitor_qmp_response_pop_one(Monitor *mon)
553 qemu_mutex_lock(&mon->qmp.qmp_queue_lock);
554 data = g_queue_pop_head(mon->qmp.qmp_responses);
555 qemu_mutex_unlock(&mon->qmp.qmp_queue_lock);
560 static void monitor_qmp_response_flush(Monitor *mon)
564 while ((data = monitor_qmp_response_pop_one(mon))) {
565 qmp_send_response(mon, data);
571 * Pop a QMPResponse from any monitor's response queue into @response.
572 * Return false if all the queues are empty; else true.
574 static bool monitor_qmp_response_pop_any(QMPResponse *response)
579 qemu_mutex_lock(&monitor_lock);
580 QTAILQ_FOREACH(mon, &mon_list, entry) {
581 data = monitor_qmp_response_pop_one(mon);
584 response->data = data;
588 qemu_mutex_unlock(&monitor_lock);
592 static void monitor_qmp_bh_responder(void *opaque)
594 QMPResponse response;
596 while (monitor_qmp_response_pop_any(&response)) {
597 qmp_send_response(response.mon, response.data);
598 qobject_unref(response.data);
602 static MonitorQAPIEventConf monitor_qapi_event_conf[QAPI_EVENT__MAX] = {
603 /* Limit guest-triggerable events to 1 per second */
604 [QAPI_EVENT_RTC_CHANGE] = { 1000 * SCALE_MS },
605 [QAPI_EVENT_WATCHDOG] = { 1000 * SCALE_MS },
606 [QAPI_EVENT_BALLOON_CHANGE] = { 1000 * SCALE_MS },
607 [QAPI_EVENT_QUORUM_REPORT_BAD] = { 1000 * SCALE_MS },
608 [QAPI_EVENT_QUORUM_FAILURE] = { 1000 * SCALE_MS },
609 [QAPI_EVENT_VSERPORT_CHANGE] = { 1000 * SCALE_MS },
613 * Emits the event to every monitor instance, @event is only used for trace
614 * Called with monitor_lock held.
616 static void monitor_qapi_event_emit(QAPIEvent event, QDict *qdict)
620 trace_monitor_protocol_event_emit(event, qdict);
621 QTAILQ_FOREACH(mon, &mon_list, entry) {
622 if (monitor_is_qmp(mon)
623 && mon->qmp.commands != &qmp_cap_negotiation_commands) {
624 qmp_queue_response(mon, qdict);
629 static void monitor_qapi_event_handler(void *opaque);
632 * Queue a new event for emission to Monitor instances,
633 * applying any rate limiting if required.
636 monitor_qapi_event_queue(QAPIEvent event, QDict *qdict, Error **errp)
638 MonitorQAPIEventConf *evconf;
639 MonitorQAPIEventState *evstate;
641 assert(event < QAPI_EVENT__MAX);
642 evconf = &monitor_qapi_event_conf[event];
643 trace_monitor_protocol_event_queue(event, qdict, evconf->rate);
645 qemu_mutex_lock(&monitor_lock);
648 /* Unthrottled event */
649 monitor_qapi_event_emit(event, qdict);
651 QDict *data = qobject_to(QDict, qdict_get(qdict, "data"));
652 MonitorQAPIEventState key = { .event = event, .data = data };
654 evstate = g_hash_table_lookup(monitor_qapi_event_state, &key);
655 assert(!evstate || timer_pending(evstate->timer));
659 * Timer is pending for (at least) evconf->rate ns after
660 * last send. Store event for sending when timer fires,
661 * replacing a prior stored event if any.
663 qobject_unref(evstate->qdict);
664 evstate->qdict = qobject_ref(qdict);
667 * Last send was (at least) evconf->rate ns ago.
668 * Send immediately, and arm the timer to call
669 * monitor_qapi_event_handler() in evconf->rate ns. Any
670 * events arriving before then will be delayed until then.
672 int64_t now = qemu_clock_get_ns(monitor_get_event_clock());
674 monitor_qapi_event_emit(event, qdict);
676 evstate = g_new(MonitorQAPIEventState, 1);
677 evstate->event = event;
678 evstate->data = qobject_ref(data);
679 evstate->qdict = NULL;
680 evstate->timer = timer_new_ns(monitor_get_event_clock(),
681 monitor_qapi_event_handler,
683 g_hash_table_add(monitor_qapi_event_state, evstate);
684 timer_mod_ns(evstate->timer, now + evconf->rate);
688 qemu_mutex_unlock(&monitor_lock);
692 * This function runs evconf->rate ns after sending a throttled
694 * If another event has since been stored, send it.
696 static void monitor_qapi_event_handler(void *opaque)
698 MonitorQAPIEventState *evstate = opaque;
699 MonitorQAPIEventConf *evconf = &monitor_qapi_event_conf[evstate->event];
701 trace_monitor_protocol_event_handler(evstate->event, evstate->qdict);
702 qemu_mutex_lock(&monitor_lock);
704 if (evstate->qdict) {
705 int64_t now = qemu_clock_get_ns(monitor_get_event_clock());
707 monitor_qapi_event_emit(evstate->event, evstate->qdict);
708 qobject_unref(evstate->qdict);
709 evstate->qdict = NULL;
710 timer_mod_ns(evstate->timer, now + evconf->rate);
712 g_hash_table_remove(monitor_qapi_event_state, evstate);
713 qobject_unref(evstate->data);
714 timer_free(evstate->timer);
718 qemu_mutex_unlock(&monitor_lock);
721 static unsigned int qapi_event_throttle_hash(const void *key)
723 const MonitorQAPIEventState *evstate = key;
724 unsigned int hash = evstate->event * 255;
726 if (evstate->event == QAPI_EVENT_VSERPORT_CHANGE) {
727 hash += g_str_hash(qdict_get_str(evstate->data, "id"));
730 if (evstate->event == QAPI_EVENT_QUORUM_REPORT_BAD) {
731 hash += g_str_hash(qdict_get_str(evstate->data, "node-name"));
737 static gboolean qapi_event_throttle_equal(const void *a, const void *b)
739 const MonitorQAPIEventState *eva = a;
740 const MonitorQAPIEventState *evb = b;
742 if (eva->event != evb->event) {
746 if (eva->event == QAPI_EVENT_VSERPORT_CHANGE) {
747 return !strcmp(qdict_get_str(eva->data, "id"),
748 qdict_get_str(evb->data, "id"));
751 if (eva->event == QAPI_EVENT_QUORUM_REPORT_BAD) {
752 return !strcmp(qdict_get_str(eva->data, "node-name"),
753 qdict_get_str(evb->data, "node-name"));
759 static void monitor_qapi_event_init(void)
761 monitor_qapi_event_state = g_hash_table_new(qapi_event_throttle_hash,
762 qapi_event_throttle_equal);
763 qmp_event_set_func_emit(monitor_qapi_event_queue);
766 static void handle_hmp_command(Monitor *mon, const char *cmdline);
768 static void monitor_data_init(Monitor *mon, bool skip_flush,
771 memset(mon, 0, sizeof(Monitor));
772 qemu_mutex_init(&mon->mon_lock);
773 qemu_mutex_init(&mon->qmp.qmp_queue_lock);
774 mon->outbuf = qstring_new();
775 /* Use *mon_cmds by default. */
776 mon->cmd_table = mon_cmds;
777 mon->skip_flush = skip_flush;
778 mon->use_io_thread = use_io_thread;
779 mon->qmp.qmp_requests = g_queue_new();
780 mon->qmp.qmp_responses = g_queue_new();
783 static void monitor_data_destroy(Monitor *mon)
785 g_free(mon->mon_cpu_path);
786 qemu_chr_fe_deinit(&mon->chr, false);
787 if (monitor_is_qmp(mon)) {
788 json_message_parser_destroy(&mon->qmp.parser);
790 readline_free(mon->rs);
791 qobject_unref(mon->outbuf);
792 qemu_mutex_destroy(&mon->mon_lock);
793 qemu_mutex_destroy(&mon->qmp.qmp_queue_lock);
794 monitor_qmp_cleanup_req_queue_locked(mon);
795 monitor_qmp_cleanup_resp_queue_locked(mon);
796 g_queue_free(mon->qmp.qmp_requests);
797 g_queue_free(mon->qmp.qmp_responses);
800 char *qmp_human_monitor_command(const char *command_line, bool has_cpu_index,
801 int64_t cpu_index, Error **errp)
804 Monitor *old_mon, hmp;
806 monitor_data_init(&hmp, true, false);
812 int ret = monitor_set_cpu(cpu_index);
815 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "cpu-index",
821 handle_hmp_command(&hmp, command_line);
824 qemu_mutex_lock(&hmp.mon_lock);
825 if (qstring_get_length(hmp.outbuf) > 0) {
826 output = g_strdup(qstring_get_str(hmp.outbuf));
828 output = g_strdup("");
830 qemu_mutex_unlock(&hmp.mon_lock);
833 monitor_data_destroy(&hmp);
837 static int compare_cmd(const char *name, const char *list)
839 const char *p, *pstart;
845 p = qemu_strchrnul(p, '|');
846 if ((p - pstart) == len && !memcmp(pstart, name, len))
855 static int get_str(char *buf, int buf_size, const char **pp)
863 while (qemu_isspace(*p)) {
874 while (*p != '\0' && *p != '\"') {
890 printf("unsupported escape code: '\\%c'\n", c);
893 if ((q - buf) < buf_size - 1) {
897 if ((q - buf) < buf_size - 1) {
904 printf("unterminated string\n");
909 while (*p != '\0' && !qemu_isspace(*p)) {
910 if ((q - buf) < buf_size - 1) {
923 static void free_cmdline_args(char **args, int nb_args)
927 assert(nb_args <= MAX_ARGS);
929 for (i = 0; i < nb_args; i++) {
936 * Parse the command line to get valid args.
937 * @cmdline: command line to be parsed.
938 * @pnb_args: location to store the number of args, must NOT be NULL.
939 * @args: location to store the args, which should be freed by caller, must
942 * Returns 0 on success, negative on failure.
944 * NOTE: this parser is an approximate form of the real command parser. Number
945 * of args have a limit of MAX_ARGS. If cmdline contains more, it will
946 * return with failure.
948 static int parse_cmdline(const char *cmdline,
949 int *pnb_args, char **args)
958 while (qemu_isspace(*p)) {
964 if (nb_args >= MAX_ARGS) {
967 ret = get_str(buf, sizeof(buf), &p);
971 args[nb_args] = g_strdup(buf);
978 free_cmdline_args(args, nb_args);
983 * Returns true if the command can be executed in preconfig mode
984 * i.e. it has the 'p' flag.
986 static bool cmd_can_preconfig(const mon_cmd_t *cmd)
992 return strchr(cmd->flags, 'p');
995 static void help_cmd_dump_one(Monitor *mon,
996 const mon_cmd_t *cmd,
1002 if (runstate_check(RUN_STATE_PRECONFIG) && !cmd_can_preconfig(cmd)) {
1006 for (i = 0; i < prefix_args_nb; i++) {
1007 monitor_printf(mon, "%s ", prefix_args[i]);
1009 monitor_printf(mon, "%s %s -- %s\n", cmd->name, cmd->params, cmd->help);
1012 /* @args[@arg_index] is the valid command need to find in @cmds */
1013 static void help_cmd_dump(Monitor *mon, const mon_cmd_t *cmds,
1014 char **args, int nb_args, int arg_index)
1016 const mon_cmd_t *cmd;
1018 /* No valid arg need to compare with, dump all in *cmds */
1019 if (arg_index >= nb_args) {
1020 for (cmd = cmds; cmd->name != NULL; cmd++) {
1021 help_cmd_dump_one(mon, cmd, args, arg_index);
1026 /* Find one entry to dump */
1027 for (cmd = cmds; cmd->name != NULL; cmd++) {
1028 if (compare_cmd(args[arg_index], cmd->name) &&
1029 ((!runstate_check(RUN_STATE_PRECONFIG) ||
1030 cmd_can_preconfig(cmd)))) {
1031 if (cmd->sub_table) {
1032 /* continue with next arg */
1033 help_cmd_dump(mon, cmd->sub_table,
1034 args, nb_args, arg_index + 1);
1036 help_cmd_dump_one(mon, cmd, args, arg_index);
1043 static void help_cmd(Monitor *mon, const char *name)
1045 char *args[MAX_ARGS];
1048 /* 1. parse user input */
1050 /* special case for log, directly dump and return */
1051 if (!strcmp(name, "log")) {
1052 const QEMULogItem *item;
1053 monitor_printf(mon, "Log items (comma separated):\n");
1054 monitor_printf(mon, "%-10s %s\n", "none", "remove all logs");
1055 for (item = qemu_log_items; item->mask != 0; item++) {
1056 monitor_printf(mon, "%-10s %s\n", item->name, item->help);
1061 if (parse_cmdline(name, &nb_args, args) < 0) {
1066 /* 2. dump the contents according to parsed args */
1067 help_cmd_dump(mon, mon->cmd_table, args, nb_args, 0);
1069 free_cmdline_args(args, nb_args);
1072 static void do_help_cmd(Monitor *mon, const QDict *qdict)
1074 help_cmd(mon, qdict_get_try_str(qdict, "name"));
1077 static void hmp_trace_event(Monitor *mon, const QDict *qdict)
1079 const char *tp_name = qdict_get_str(qdict, "name");
1080 bool new_state = qdict_get_bool(qdict, "option");
1081 bool has_vcpu = qdict_haskey(qdict, "vcpu");
1082 int vcpu = qdict_get_try_int(qdict, "vcpu", 0);
1083 Error *local_err = NULL;
1086 monitor_printf(mon, "argument vcpu must be positive");
1090 qmp_trace_event_set_state(tp_name, new_state, true, true, has_vcpu, vcpu, &local_err);
1092 error_report_err(local_err);
1096 #ifdef CONFIG_TRACE_SIMPLE
1097 static void hmp_trace_file(Monitor *mon, const QDict *qdict)
1099 const char *op = qdict_get_try_str(qdict, "op");
1100 const char *arg = qdict_get_try_str(qdict, "arg");
1103 st_print_trace_file_status((FILE *)mon, &monitor_fprintf);
1104 } else if (!strcmp(op, "on")) {
1105 st_set_trace_file_enabled(true);
1106 } else if (!strcmp(op, "off")) {
1107 st_set_trace_file_enabled(false);
1108 } else if (!strcmp(op, "flush")) {
1109 st_flush_trace_buffer();
1110 } else if (!strcmp(op, "set")) {
1112 st_set_trace_file(arg);
1115 monitor_printf(mon, "unexpected argument \"%s\"\n", op);
1116 help_cmd(mon, "trace-file");
1121 static void hmp_info_help(Monitor *mon, const QDict *qdict)
1123 help_cmd(mon, "info");
1126 static void query_commands_cb(QmpCommand *cmd, void *opaque)
1128 CommandInfoList *info, **list = opaque;
1130 if (!cmd->enabled) {
1134 info = g_malloc0(sizeof(*info));
1135 info->value = g_malloc0(sizeof(*info->value));
1136 info->value->name = g_strdup(cmd->name);
1141 CommandInfoList *qmp_query_commands(Error **errp)
1143 CommandInfoList *list = NULL;
1145 qmp_for_each_command(cur_mon->qmp.commands, query_commands_cb, &list);
1150 EventInfoList *qmp_query_events(Error **errp)
1152 EventInfoList *info, *ev_list = NULL;
1155 for (e = 0 ; e < QAPI_EVENT__MAX ; e++) {
1156 const char *event_name = QAPIEvent_str(e);
1157 assert(event_name != NULL);
1158 info = g_malloc0(sizeof(*info));
1159 info->value = g_malloc0(sizeof(*info->value));
1160 info->value->name = g_strdup(event_name);
1162 info->next = ev_list;
1170 * Minor hack: generated marshalling suppressed for this command
1171 * ('gen': false in the schema) so we can parse the JSON string
1172 * directly into QObject instead of first parsing it with
1173 * visit_type_SchemaInfoList() into a SchemaInfoList, then marshal it
1174 * to QObject with generated output marshallers, every time. Instead,
1175 * we do it in test-qobject-input-visitor.c, just to make sure
1176 * qapi-gen.py's output actually conforms to the schema.
1178 static void qmp_query_qmp_schema(QDict *qdict, QObject **ret_data,
1181 *ret_data = qobject_from_qlit(&qmp_schema_qlit);
1185 * We used to define commands in qmp-commands.hx in addition to the
1186 * QAPI schema. This permitted defining some of them only in certain
1187 * configurations. query-commands has always reflected that (good,
1188 * because it lets QMP clients figure out what's actually available),
1189 * while query-qmp-schema never did (not so good). This function is a
1190 * hack to keep the configuration-specific commands defined exactly as
1191 * before, even though qmp-commands.hx is gone.
1193 * FIXME Educate the QAPI schema on configuration-specific commands,
1194 * and drop this hack.
1196 static void qmp_unregister_commands_hack(void)
1198 #ifndef CONFIG_SPICE
1199 qmp_unregister_command(&qmp_commands, "query-spice");
1201 #ifndef CONFIG_REPLICATION
1202 qmp_unregister_command(&qmp_commands, "xen-set-replication");
1203 qmp_unregister_command(&qmp_commands, "query-xen-replication-status");
1204 qmp_unregister_command(&qmp_commands, "xen-colo-do-checkpoint");
1207 qmp_unregister_command(&qmp_commands, "rtc-reset-reinjection");
1208 qmp_unregister_command(&qmp_commands, "query-sev");
1209 qmp_unregister_command(&qmp_commands, "query-sev-launch-measure");
1210 qmp_unregister_command(&qmp_commands, "query-sev-capabilities");
1212 #ifndef TARGET_S390X
1213 qmp_unregister_command(&qmp_commands, "dump-skeys");
1216 qmp_unregister_command(&qmp_commands, "query-gic-capabilities");
1218 #if !defined(TARGET_S390X) && !defined(TARGET_I386)
1219 qmp_unregister_command(&qmp_commands, "query-cpu-model-expansion");
1221 #if !defined(TARGET_S390X)
1222 qmp_unregister_command(&qmp_commands, "query-cpu-model-baseline");
1223 qmp_unregister_command(&qmp_commands, "query-cpu-model-comparison");
1225 #if !defined(TARGET_PPC) && !defined(TARGET_ARM) && !defined(TARGET_I386) \
1226 && !defined(TARGET_S390X)
1227 qmp_unregister_command(&qmp_commands, "query-cpu-definitions");
1231 static void monitor_init_qmp_commands(void)
1234 * Two command lists:
1235 * - qmp_commands contains all QMP commands
1236 * - qmp_cap_negotiation_commands contains just
1237 * "qmp_capabilities", to enforce capability negotiation
1240 qmp_init_marshal(&qmp_commands);
1242 qmp_register_command(&qmp_commands, "query-qmp-schema",
1243 qmp_query_qmp_schema, QCO_ALLOW_PRECONFIG);
1244 qmp_register_command(&qmp_commands, "device_add", qmp_device_add,
1246 qmp_register_command(&qmp_commands, "netdev_add", qmp_netdev_add,
1249 qmp_unregister_commands_hack();
1251 QTAILQ_INIT(&qmp_cap_negotiation_commands);
1252 qmp_register_command(&qmp_cap_negotiation_commands, "qmp_capabilities",
1253 qmp_marshal_qmp_capabilities, QCO_ALLOW_PRECONFIG);
1256 static bool qmp_cap_enabled(Monitor *mon, QMPCapability cap)
1258 return mon->qmp.qmp_caps[cap];
1261 static bool qmp_oob_enabled(Monitor *mon)
1263 return qmp_cap_enabled(mon, QMP_CAPABILITY_OOB);
1266 static void qmp_caps_check(Monitor *mon, QMPCapabilityList *list,
1269 for (; list; list = list->next) {
1270 assert(list->value < QMP_CAPABILITY__MAX);
1271 switch (list->value) {
1272 case QMP_CAPABILITY_OOB:
1273 if (!mon->use_io_thread) {
1275 * Out-of-band only works with monitors that are
1276 * running on dedicated I/O thread.
1278 error_setg(errp, "This monitor does not support "
1279 "out-of-band (OOB)");
1289 /* This function should only be called after capabilities are checked. */
1290 static void qmp_caps_apply(Monitor *mon, QMPCapabilityList *list)
1292 for (; list; list = list->next) {
1293 mon->qmp.qmp_caps[list->value] = true;
1297 void qmp_qmp_capabilities(bool has_enable, QMPCapabilityList *enable,
1300 Error *local_err = NULL;
1302 if (cur_mon->qmp.commands == &qmp_commands) {
1303 error_set(errp, ERROR_CLASS_COMMAND_NOT_FOUND,
1304 "Capabilities negotiation is already complete, command "
1309 /* Enable QMP capabilities provided by the client if applicable. */
1311 qmp_caps_check(cur_mon, enable, &local_err);
1314 * Failed check on any of the capabilities will fail the
1315 * entire command (and thus not apply any of the other
1316 * capabilities that were also requested).
1318 error_propagate(errp, local_err);
1321 qmp_caps_apply(cur_mon, enable);
1324 cur_mon->qmp.commands = &qmp_commands;
1327 /* Set the current CPU defined by the user. Callers must hold BQL. */
1328 int monitor_set_cpu(int cpu_index)
1332 cpu = qemu_get_cpu(cpu_index);
1336 g_free(cur_mon->mon_cpu_path);
1337 cur_mon->mon_cpu_path = object_get_canonical_path(OBJECT(cpu));
1341 /* Callers must hold BQL. */
1342 static CPUState *mon_get_cpu_sync(bool synchronize)
1346 if (cur_mon->mon_cpu_path) {
1347 cpu = (CPUState *) object_resolve_path_type(cur_mon->mon_cpu_path,
1350 g_free(cur_mon->mon_cpu_path);
1351 cur_mon->mon_cpu_path = NULL;
1354 if (!cur_mon->mon_cpu_path) {
1358 monitor_set_cpu(first_cpu->cpu_index);
1362 cpu_synchronize_state(cpu);
1367 CPUState *mon_get_cpu(void)
1369 return mon_get_cpu_sync(true);
1372 CPUArchState *mon_get_cpu_env(void)
1374 CPUState *cs = mon_get_cpu();
1376 return cs ? cs->env_ptr : NULL;
1379 int monitor_get_cpu_index(void)
1381 CPUState *cs = mon_get_cpu_sync(false);
1383 return cs ? cs->cpu_index : UNASSIGNED_CPU_INDEX;
1386 static void hmp_info_registers(Monitor *mon, const QDict *qdict)
1388 bool all_cpus = qdict_get_try_bool(qdict, "cpustate_all", false);
1393 monitor_printf(mon, "\nCPU#%d\n", cs->cpu_index);
1394 cpu_dump_state(cs, (FILE *)mon, monitor_fprintf, CPU_DUMP_FPU);
1400 monitor_printf(mon, "No CPU available\n");
1404 cpu_dump_state(cs, (FILE *)mon, monitor_fprintf, CPU_DUMP_FPU);
1409 static void hmp_info_jit(Monitor *mon, const QDict *qdict)
1411 if (!tcg_enabled()) {
1412 error_report("JIT information is only available with accel=tcg");
1416 dump_exec_info((FILE *)mon, monitor_fprintf);
1417 dump_drift_info((FILE *)mon, monitor_fprintf);
1420 static void hmp_info_opcount(Monitor *mon, const QDict *qdict)
1422 dump_opcount_info((FILE *)mon, monitor_fprintf);
1426 static void hmp_info_history(Monitor *mon, const QDict *qdict)
1435 str = readline_get_history(mon->rs, i);
1438 monitor_printf(mon, "%d: '%s'\n", i, str);
1443 static void hmp_info_cpustats(Monitor *mon, const QDict *qdict)
1445 CPUState *cs = mon_get_cpu();
1448 monitor_printf(mon, "No CPU available\n");
1451 cpu_dump_statistics(cs, (FILE *)mon, &monitor_fprintf, 0);
1454 static void hmp_info_trace_events(Monitor *mon, const QDict *qdict)
1456 const char *name = qdict_get_try_str(qdict, "name");
1457 bool has_vcpu = qdict_haskey(qdict, "vcpu");
1458 int vcpu = qdict_get_try_int(qdict, "vcpu", 0);
1459 TraceEventInfoList *events;
1460 TraceEventInfoList *elem;
1461 Error *local_err = NULL;
1467 monitor_printf(mon, "argument vcpu must be positive");
1471 events = qmp_trace_event_get_state(name, has_vcpu, vcpu, &local_err);
1473 error_report_err(local_err);
1477 for (elem = events; elem != NULL; elem = elem->next) {
1478 monitor_printf(mon, "%s : state %u\n",
1480 elem->value->state == TRACE_EVENT_STATE_ENABLED ? 1 : 0);
1482 qapi_free_TraceEventInfoList(events);
1485 void qmp_client_migrate_info(const char *protocol, const char *hostname,
1486 bool has_port, int64_t port,
1487 bool has_tls_port, int64_t tls_port,
1488 bool has_cert_subject, const char *cert_subject,
1491 if (strcmp(protocol, "spice") == 0) {
1492 if (!qemu_using_spice(errp)) {
1496 if (!has_port && !has_tls_port) {
1497 error_setg(errp, QERR_MISSING_PARAMETER, "port/tls-port");
1501 if (qemu_spice_migrate_info(hostname,
1502 has_port ? port : -1,
1503 has_tls_port ? tls_port : -1,
1505 error_setg(errp, QERR_UNDEFINED_ERROR);
1511 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "protocol", "spice");
1514 static void hmp_logfile(Monitor *mon, const QDict *qdict)
1518 qemu_set_log_filename(qdict_get_str(qdict, "filename"), &err);
1520 error_report_err(err);
1524 static void hmp_log(Monitor *mon, const QDict *qdict)
1527 const char *items = qdict_get_str(qdict, "items");
1529 if (!strcmp(items, "none")) {
1532 mask = qemu_str_to_log_mask(items);
1534 help_cmd(mon, "log");
1541 static void hmp_singlestep(Monitor *mon, const QDict *qdict)
1543 const char *option = qdict_get_try_str(qdict, "option");
1544 if (!option || !strcmp(option, "on")) {
1546 } else if (!strcmp(option, "off")) {
1549 monitor_printf(mon, "unexpected option %s\n", option);
1553 static void hmp_gdbserver(Monitor *mon, const QDict *qdict)
1555 const char *device = qdict_get_try_str(qdict, "device");
1557 device = "tcp::" DEFAULT_GDBSTUB_PORT;
1558 if (gdbserver_start(device) < 0) {
1559 monitor_printf(mon, "Could not open gdbserver on device '%s'\n",
1561 } else if (strcmp(device, "none") == 0) {
1562 monitor_printf(mon, "Disabled gdbserver\n");
1564 monitor_printf(mon, "Waiting for gdb connection on device '%s'\n",
1569 static void hmp_watchdog_action(Monitor *mon, const QDict *qdict)
1571 const char *action = qdict_get_str(qdict, "action");
1572 if (select_watchdog_action(action) == -1) {
1573 monitor_printf(mon, "Unknown watchdog action '%s'\n", action);
1577 static void monitor_printc(Monitor *mon, int c)
1579 monitor_printf(mon, "'");
1582 monitor_printf(mon, "\\'");
1585 monitor_printf(mon, "\\\\");
1588 monitor_printf(mon, "\\n");
1591 monitor_printf(mon, "\\r");
1594 if (c >= 32 && c <= 126) {
1595 monitor_printf(mon, "%c", c);
1597 monitor_printf(mon, "\\x%02x", c);
1601 monitor_printf(mon, "'");
1604 static void memory_dump(Monitor *mon, int count, int format, int wsize,
1605 hwaddr addr, int is_physical)
1607 int l, line_size, i, max_digits, len;
1610 CPUState *cs = mon_get_cpu();
1612 if (!cs && (format == 'i' || !is_physical)) {
1613 monitor_printf(mon, "Can not dump without CPU\n");
1617 if (format == 'i') {
1618 monitor_disas(mon, cs, addr, count, is_physical);
1622 len = wsize * count;
1631 max_digits = DIV_ROUND_UP(wsize * 8, 3);
1635 max_digits = (wsize * 8) / 4;
1639 max_digits = DIV_ROUND_UP(wsize * 8 * 10, 33);
1648 monitor_printf(mon, TARGET_FMT_plx ":", addr);
1650 monitor_printf(mon, TARGET_FMT_lx ":", (target_ulong)addr);
1655 cpu_physical_memory_read(addr, buf, l);
1657 if (cpu_memory_rw_debug(cs, addr, buf, l, 0) < 0) {
1658 monitor_printf(mon, " Cannot access memory\n");
1667 v = ldub_p(buf + i);
1670 v = lduw_p(buf + i);
1673 v = (uint32_t)ldl_p(buf + i);
1679 monitor_printf(mon, " ");
1682 monitor_printf(mon, "%#*" PRIo64, max_digits, v);
1685 monitor_printf(mon, "0x%0*" PRIx64, max_digits, v);
1688 monitor_printf(mon, "%*" PRIu64, max_digits, v);
1691 monitor_printf(mon, "%*" PRId64, max_digits, v);
1694 monitor_printc(mon, v);
1699 monitor_printf(mon, "\n");
1705 static void hmp_memory_dump(Monitor *mon, const QDict *qdict)
1707 int count = qdict_get_int(qdict, "count");
1708 int format = qdict_get_int(qdict, "format");
1709 int size = qdict_get_int(qdict, "size");
1710 target_long addr = qdict_get_int(qdict, "addr");
1712 memory_dump(mon, count, format, size, addr, 0);
1715 static void hmp_physical_memory_dump(Monitor *mon, const QDict *qdict)
1717 int count = qdict_get_int(qdict, "count");
1718 int format = qdict_get_int(qdict, "format");
1719 int size = qdict_get_int(qdict, "size");
1720 hwaddr addr = qdict_get_int(qdict, "addr");
1722 memory_dump(mon, count, format, size, addr, 1);
1725 static void *gpa2hva(MemoryRegion **p_mr, hwaddr addr, Error **errp)
1727 MemoryRegionSection mrs = memory_region_find(get_system_memory(),
1731 error_setg(errp, "No memory is mapped at address 0x%" HWADDR_PRIx, addr);
1735 if (!memory_region_is_ram(mrs.mr) && !memory_region_is_romd(mrs.mr)) {
1736 error_setg(errp, "Memory at address 0x%" HWADDR_PRIx "is not RAM", addr);
1737 memory_region_unref(mrs.mr);
1742 return qemu_map_ram_ptr(mrs.mr->ram_block, mrs.offset_within_region);
1745 static void hmp_gpa2hva(Monitor *mon, const QDict *qdict)
1747 hwaddr addr = qdict_get_int(qdict, "addr");
1748 Error *local_err = NULL;
1749 MemoryRegion *mr = NULL;
1752 ptr = gpa2hva(&mr, addr, &local_err);
1754 error_report_err(local_err);
1758 monitor_printf(mon, "Host virtual address for 0x%" HWADDR_PRIx
1760 addr, mr->name, ptr);
1762 memory_region_unref(mr);
1766 static uint64_t vtop(void *ptr, Error **errp)
1770 uintptr_t addr = (uintptr_t) ptr;
1771 uintptr_t pagesize = getpagesize();
1772 off_t offset = addr / pagesize * sizeof(pinfo);
1775 fd = open("/proc/self/pagemap", O_RDONLY);
1777 error_setg_errno(errp, errno, "Cannot open /proc/self/pagemap");
1781 /* Force copy-on-write if necessary. */
1782 atomic_add((uint8_t *)ptr, 0);
1784 if (pread(fd, &pinfo, sizeof(pinfo), offset) != sizeof(pinfo)) {
1785 error_setg_errno(errp, errno, "Cannot read pagemap");
1788 if ((pinfo & (1ull << 63)) == 0) {
1789 error_setg(errp, "Page not present");
1792 ret = ((pinfo & 0x007fffffffffffffull) * pagesize) | (addr & (pagesize - 1));
1799 static void hmp_gpa2hpa(Monitor *mon, const QDict *qdict)
1801 hwaddr addr = qdict_get_int(qdict, "addr");
1802 Error *local_err = NULL;
1803 MemoryRegion *mr = NULL;
1807 ptr = gpa2hva(&mr, addr, &local_err);
1809 error_report_err(local_err);
1813 physaddr = vtop(ptr, &local_err);
1815 error_report_err(local_err);
1817 monitor_printf(mon, "Host physical address for 0x%" HWADDR_PRIx
1818 " (%s) is 0x%" PRIx64 "\n",
1819 addr, mr->name, (uint64_t) physaddr);
1822 memory_region_unref(mr);
1826 static void do_print(Monitor *mon, const QDict *qdict)
1828 int format = qdict_get_int(qdict, "format");
1829 hwaddr val = qdict_get_int(qdict, "val");
1833 monitor_printf(mon, "%#" HWADDR_PRIo, val);
1836 monitor_printf(mon, "%#" HWADDR_PRIx, val);
1839 monitor_printf(mon, "%" HWADDR_PRIu, val);
1843 monitor_printf(mon, "%" HWADDR_PRId, val);
1846 monitor_printc(mon, val);
1849 monitor_printf(mon, "\n");
1852 static void hmp_sum(Monitor *mon, const QDict *qdict)
1856 uint32_t start = qdict_get_int(qdict, "start");
1857 uint32_t size = qdict_get_int(qdict, "size");
1860 for(addr = start; addr < (start + size); addr++) {
1861 uint8_t val = address_space_ldub(&address_space_memory, addr,
1862 MEMTXATTRS_UNSPECIFIED, NULL);
1863 /* BSD sum algorithm ('sum' Unix command) */
1864 sum = (sum >> 1) | (sum << 15);
1867 monitor_printf(mon, "%05d\n", sum);
1870 static int mouse_button_state;
1872 static void hmp_mouse_move(Monitor *mon, const QDict *qdict)
1874 int dx, dy, dz, button;
1875 const char *dx_str = qdict_get_str(qdict, "dx_str");
1876 const char *dy_str = qdict_get_str(qdict, "dy_str");
1877 const char *dz_str = qdict_get_try_str(qdict, "dz_str");
1879 dx = strtol(dx_str, NULL, 0);
1880 dy = strtol(dy_str, NULL, 0);
1881 qemu_input_queue_rel(NULL, INPUT_AXIS_X, dx);
1882 qemu_input_queue_rel(NULL, INPUT_AXIS_Y, dy);
1885 dz = strtol(dz_str, NULL, 0);
1887 button = (dz > 0) ? INPUT_BUTTON_WHEEL_UP : INPUT_BUTTON_WHEEL_DOWN;
1888 qemu_input_queue_btn(NULL, button, true);
1889 qemu_input_event_sync();
1890 qemu_input_queue_btn(NULL, button, false);
1893 qemu_input_event_sync();
1896 static void hmp_mouse_button(Monitor *mon, const QDict *qdict)
1898 static uint32_t bmap[INPUT_BUTTON__MAX] = {
1899 [INPUT_BUTTON_LEFT] = MOUSE_EVENT_LBUTTON,
1900 [INPUT_BUTTON_MIDDLE] = MOUSE_EVENT_MBUTTON,
1901 [INPUT_BUTTON_RIGHT] = MOUSE_EVENT_RBUTTON,
1903 int button_state = qdict_get_int(qdict, "button_state");
1905 if (mouse_button_state == button_state) {
1908 qemu_input_update_buttons(NULL, bmap, mouse_button_state, button_state);
1909 qemu_input_event_sync();
1910 mouse_button_state = button_state;
1913 static void hmp_ioport_read(Monitor *mon, const QDict *qdict)
1915 int size = qdict_get_int(qdict, "size");
1916 int addr = qdict_get_int(qdict, "addr");
1917 int has_index = qdict_haskey(qdict, "index");
1922 int index = qdict_get_int(qdict, "index");
1923 cpu_outb(addr & IOPORTS_MASK, index & 0xff);
1931 val = cpu_inb(addr);
1935 val = cpu_inw(addr);
1939 val = cpu_inl(addr);
1943 monitor_printf(mon, "port%c[0x%04x] = %#0*x\n",
1944 suffix, addr, size * 2, val);
1947 static void hmp_ioport_write(Monitor *mon, const QDict *qdict)
1949 int size = qdict_get_int(qdict, "size");
1950 int addr = qdict_get_int(qdict, "addr");
1951 int val = qdict_get_int(qdict, "val");
1953 addr &= IOPORTS_MASK;
1958 cpu_outb(addr, val);
1961 cpu_outw(addr, val);
1964 cpu_outl(addr, val);
1969 static void hmp_boot_set(Monitor *mon, const QDict *qdict)
1971 Error *local_err = NULL;
1972 const char *bootdevice = qdict_get_str(qdict, "bootdevice");
1974 qemu_boot_set(bootdevice, &local_err);
1976 error_report_err(local_err);
1978 monitor_printf(mon, "boot device list now set to %s\n", bootdevice);
1982 static void hmp_info_mtree(Monitor *mon, const QDict *qdict)
1984 bool flatview = qdict_get_try_bool(qdict, "flatview", false);
1985 bool dispatch_tree = qdict_get_try_bool(qdict, "dispatch_tree", false);
1986 bool owner = qdict_get_try_bool(qdict, "owner", false);
1988 mtree_info((fprintf_function)monitor_printf, mon, flatview, dispatch_tree,
1992 static void hmp_info_numa(Monitor *mon, const QDict *qdict)
1995 NumaNodeMem *node_mem;
1996 CpuInfoList *cpu_list, *cpu;
1998 cpu_list = qmp_query_cpus(&error_abort);
1999 node_mem = g_new0(NumaNodeMem, nb_numa_nodes);
2001 query_numa_node_mem(node_mem);
2002 monitor_printf(mon, "%d nodes\n", nb_numa_nodes);
2003 for (i = 0; i < nb_numa_nodes; i++) {
2004 monitor_printf(mon, "node %d cpus:", i);
2005 for (cpu = cpu_list; cpu; cpu = cpu->next) {
2006 if (cpu->value->has_props && cpu->value->props->has_node_id &&
2007 cpu->value->props->node_id == i) {
2008 monitor_printf(mon, " %" PRIi64, cpu->value->CPU);
2011 monitor_printf(mon, "\n");
2012 monitor_printf(mon, "node %d size: %" PRId64 " MB\n", i,
2013 node_mem[i].node_mem >> 20);
2014 monitor_printf(mon, "node %d plugged: %" PRId64 " MB\n", i,
2015 node_mem[i].node_plugged_mem >> 20);
2017 qapi_free_CpuInfoList(cpu_list);
2021 #ifdef CONFIG_PROFILER
2026 static void hmp_info_profile(Monitor *mon, const QDict *qdict)
2028 monitor_printf(mon, "async time %" PRId64 " (%0.3f)\n",
2029 dev_time, dev_time / (double)NANOSECONDS_PER_SECOND);
2030 monitor_printf(mon, "qemu time %" PRId64 " (%0.3f)\n",
2031 tcg_time, tcg_time / (double)NANOSECONDS_PER_SECOND);
2036 static void hmp_info_profile(Monitor *mon, const QDict *qdict)
2038 monitor_printf(mon, "Internal profiler not compiled\n");
2042 /* Capture support */
2043 static QLIST_HEAD (capture_list_head, CaptureState) capture_head;
2045 static void hmp_info_capture(Monitor *mon, const QDict *qdict)
2050 for (s = capture_head.lh_first, i = 0; s; s = s->entries.le_next, ++i) {
2051 monitor_printf(mon, "[%d]: ", i);
2052 s->ops.info (s->opaque);
2056 static void hmp_stopcapture(Monitor *mon, const QDict *qdict)
2059 int n = qdict_get_int(qdict, "n");
2062 for (s = capture_head.lh_first, i = 0; s; s = s->entries.le_next, ++i) {
2064 s->ops.destroy (s->opaque);
2065 QLIST_REMOVE (s, entries);
2072 static void hmp_wavcapture(Monitor *mon, const QDict *qdict)
2074 const char *path = qdict_get_str(qdict, "path");
2075 int has_freq = qdict_haskey(qdict, "freq");
2076 int freq = qdict_get_try_int(qdict, "freq", -1);
2077 int has_bits = qdict_haskey(qdict, "bits");
2078 int bits = qdict_get_try_int(qdict, "bits", -1);
2079 int has_channels = qdict_haskey(qdict, "nchannels");
2080 int nchannels = qdict_get_try_int(qdict, "nchannels", -1);
2083 s = g_malloc0 (sizeof (*s));
2085 freq = has_freq ? freq : 44100;
2086 bits = has_bits ? bits : 16;
2087 nchannels = has_channels ? nchannels : 2;
2089 if (wav_start_capture (s, path, freq, bits, nchannels)) {
2090 monitor_printf(mon, "Failed to add wave capture\n");
2094 QLIST_INSERT_HEAD (&capture_head, s, entries);
2097 static qemu_acl *find_acl(Monitor *mon, const char *name)
2099 qemu_acl *acl = qemu_acl_find(name);
2102 monitor_printf(mon, "acl: unknown list '%s'\n", name);
2107 static void hmp_acl_show(Monitor *mon, const QDict *qdict)
2109 const char *aclname = qdict_get_str(qdict, "aclname");
2110 qemu_acl *acl = find_acl(mon, aclname);
2111 qemu_acl_entry *entry;
2115 monitor_printf(mon, "policy: %s\n",
2116 acl->defaultDeny ? "deny" : "allow");
2117 QTAILQ_FOREACH(entry, &acl->entries, next) {
2119 monitor_printf(mon, "%d: %s %s\n", i,
2120 entry->deny ? "deny" : "allow", entry->match);
2125 static void hmp_acl_reset(Monitor *mon, const QDict *qdict)
2127 const char *aclname = qdict_get_str(qdict, "aclname");
2128 qemu_acl *acl = find_acl(mon, aclname);
2131 qemu_acl_reset(acl);
2132 monitor_printf(mon, "acl: removed all rules\n");
2136 static void hmp_acl_policy(Monitor *mon, const QDict *qdict)
2138 const char *aclname = qdict_get_str(qdict, "aclname");
2139 const char *policy = qdict_get_str(qdict, "policy");
2140 qemu_acl *acl = find_acl(mon, aclname);
2143 if (strcmp(policy, "allow") == 0) {
2144 acl->defaultDeny = 0;
2145 monitor_printf(mon, "acl: policy set to 'allow'\n");
2146 } else if (strcmp(policy, "deny") == 0) {
2147 acl->defaultDeny = 1;
2148 monitor_printf(mon, "acl: policy set to 'deny'\n");
2150 monitor_printf(mon, "acl: unknown policy '%s', "
2151 "expected 'deny' or 'allow'\n", policy);
2156 static void hmp_acl_add(Monitor *mon, const QDict *qdict)
2158 const char *aclname = qdict_get_str(qdict, "aclname");
2159 const char *match = qdict_get_str(qdict, "match");
2160 const char *policy = qdict_get_str(qdict, "policy");
2161 int has_index = qdict_haskey(qdict, "index");
2162 int index = qdict_get_try_int(qdict, "index", -1);
2163 qemu_acl *acl = find_acl(mon, aclname);
2167 if (strcmp(policy, "allow") == 0) {
2169 } else if (strcmp(policy, "deny") == 0) {
2172 monitor_printf(mon, "acl: unknown policy '%s', "
2173 "expected 'deny' or 'allow'\n", policy);
2177 ret = qemu_acl_insert(acl, deny, match, index);
2179 ret = qemu_acl_append(acl, deny, match);
2181 monitor_printf(mon, "acl: unable to add acl entry\n");
2183 monitor_printf(mon, "acl: added rule at position %d\n", ret);
2187 static void hmp_acl_remove(Monitor *mon, const QDict *qdict)
2189 const char *aclname = qdict_get_str(qdict, "aclname");
2190 const char *match = qdict_get_str(qdict, "match");
2191 qemu_acl *acl = find_acl(mon, aclname);
2195 ret = qemu_acl_remove(acl, match);
2197 monitor_printf(mon, "acl: no matching acl entry\n");
2199 monitor_printf(mon, "acl: removed rule at position %d\n", ret);
2203 void qmp_getfd(const char *fdname, Error **errp)
2208 fd = qemu_chr_fe_get_msgfd(&cur_mon->chr);
2210 error_setg(errp, QERR_FD_NOT_SUPPLIED);
2214 if (qemu_isdigit(fdname[0])) {
2216 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "fdname",
2217 "a name not starting with a digit");
2221 qemu_mutex_lock(&cur_mon->mon_lock);
2222 QLIST_FOREACH(monfd, &cur_mon->fds, next) {
2223 if (strcmp(monfd->name, fdname) != 0) {
2229 qemu_mutex_unlock(&cur_mon->mon_lock);
2230 /* Make sure close() is out of critical section */
2235 monfd = g_malloc0(sizeof(mon_fd_t));
2236 monfd->name = g_strdup(fdname);
2239 QLIST_INSERT_HEAD(&cur_mon->fds, monfd, next);
2240 qemu_mutex_unlock(&cur_mon->mon_lock);
2243 void qmp_closefd(const char *fdname, Error **errp)
2248 qemu_mutex_lock(&cur_mon->mon_lock);
2249 QLIST_FOREACH(monfd, &cur_mon->fds, next) {
2250 if (strcmp(monfd->name, fdname) != 0) {
2254 QLIST_REMOVE(monfd, next);
2256 g_free(monfd->name);
2258 qemu_mutex_unlock(&cur_mon->mon_lock);
2259 /* Make sure close() is out of critical section */
2264 qemu_mutex_unlock(&cur_mon->mon_lock);
2265 error_setg(errp, QERR_FD_NOT_FOUND, fdname);
2268 int monitor_get_fd(Monitor *mon, const char *fdname, Error **errp)
2272 qemu_mutex_lock(&mon->mon_lock);
2273 QLIST_FOREACH(monfd, &mon->fds, next) {
2276 if (strcmp(monfd->name, fdname) != 0) {
2282 /* caller takes ownership of fd */
2283 QLIST_REMOVE(monfd, next);
2284 g_free(monfd->name);
2286 qemu_mutex_unlock(&mon->mon_lock);
2291 qemu_mutex_unlock(&mon->mon_lock);
2292 error_setg(errp, "File descriptor named '%s' has not been found", fdname);
2296 static void monitor_fdset_cleanup(MonFdset *mon_fdset)
2298 MonFdsetFd *mon_fdset_fd;
2299 MonFdsetFd *mon_fdset_fd_next;
2301 QLIST_FOREACH_SAFE(mon_fdset_fd, &mon_fdset->fds, next, mon_fdset_fd_next) {
2302 if ((mon_fdset_fd->removed ||
2303 (QLIST_EMPTY(&mon_fdset->dup_fds) && mon_refcount == 0)) &&
2304 runstate_is_running()) {
2305 close(mon_fdset_fd->fd);
2306 g_free(mon_fdset_fd->opaque);
2307 QLIST_REMOVE(mon_fdset_fd, next);
2308 g_free(mon_fdset_fd);
2312 if (QLIST_EMPTY(&mon_fdset->fds) && QLIST_EMPTY(&mon_fdset->dup_fds)) {
2313 QLIST_REMOVE(mon_fdset, next);
2318 static void monitor_fdsets_cleanup(void)
2320 MonFdset *mon_fdset;
2321 MonFdset *mon_fdset_next;
2323 qemu_mutex_lock(&mon_fdsets_lock);
2324 QLIST_FOREACH_SAFE(mon_fdset, &mon_fdsets, next, mon_fdset_next) {
2325 monitor_fdset_cleanup(mon_fdset);
2327 qemu_mutex_unlock(&mon_fdsets_lock);
2330 AddfdInfo *qmp_add_fd(bool has_fdset_id, int64_t fdset_id, bool has_opaque,
2331 const char *opaque, Error **errp)
2334 Monitor *mon = cur_mon;
2337 fd = qemu_chr_fe_get_msgfd(&mon->chr);
2339 error_setg(errp, QERR_FD_NOT_SUPPLIED);
2343 fdinfo = monitor_fdset_add_fd(fd, has_fdset_id, fdset_id,
2344 has_opaque, opaque, errp);
2356 void qmp_remove_fd(int64_t fdset_id, bool has_fd, int64_t fd, Error **errp)
2358 MonFdset *mon_fdset;
2359 MonFdsetFd *mon_fdset_fd;
2362 qemu_mutex_lock(&mon_fdsets_lock);
2363 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2364 if (mon_fdset->id != fdset_id) {
2367 QLIST_FOREACH(mon_fdset_fd, &mon_fdset->fds, next) {
2369 if (mon_fdset_fd->fd != fd) {
2372 mon_fdset_fd->removed = true;
2375 mon_fdset_fd->removed = true;
2378 if (has_fd && !mon_fdset_fd) {
2381 monitor_fdset_cleanup(mon_fdset);
2382 qemu_mutex_unlock(&mon_fdsets_lock);
2387 qemu_mutex_unlock(&mon_fdsets_lock);
2389 snprintf(fd_str, sizeof(fd_str), "fdset-id:%" PRId64 ", fd:%" PRId64,
2392 snprintf(fd_str, sizeof(fd_str), "fdset-id:%" PRId64, fdset_id);
2394 error_setg(errp, QERR_FD_NOT_FOUND, fd_str);
2397 FdsetInfoList *qmp_query_fdsets(Error **errp)
2399 MonFdset *mon_fdset;
2400 MonFdsetFd *mon_fdset_fd;
2401 FdsetInfoList *fdset_list = NULL;
2403 qemu_mutex_lock(&mon_fdsets_lock);
2404 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2405 FdsetInfoList *fdset_info = g_malloc0(sizeof(*fdset_info));
2406 FdsetFdInfoList *fdsetfd_list = NULL;
2408 fdset_info->value = g_malloc0(sizeof(*fdset_info->value));
2409 fdset_info->value->fdset_id = mon_fdset->id;
2411 QLIST_FOREACH(mon_fdset_fd, &mon_fdset->fds, next) {
2412 FdsetFdInfoList *fdsetfd_info;
2414 fdsetfd_info = g_malloc0(sizeof(*fdsetfd_info));
2415 fdsetfd_info->value = g_malloc0(sizeof(*fdsetfd_info->value));
2416 fdsetfd_info->value->fd = mon_fdset_fd->fd;
2417 if (mon_fdset_fd->opaque) {
2418 fdsetfd_info->value->has_opaque = true;
2419 fdsetfd_info->value->opaque = g_strdup(mon_fdset_fd->opaque);
2421 fdsetfd_info->value->has_opaque = false;
2424 fdsetfd_info->next = fdsetfd_list;
2425 fdsetfd_list = fdsetfd_info;
2428 fdset_info->value->fds = fdsetfd_list;
2430 fdset_info->next = fdset_list;
2431 fdset_list = fdset_info;
2433 qemu_mutex_unlock(&mon_fdsets_lock);
2438 AddfdInfo *monitor_fdset_add_fd(int fd, bool has_fdset_id, int64_t fdset_id,
2439 bool has_opaque, const char *opaque,
2442 MonFdset *mon_fdset = NULL;
2443 MonFdsetFd *mon_fdset_fd;
2446 qemu_mutex_lock(&mon_fdsets_lock);
2448 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2449 /* Break if match found or match impossible due to ordering by ID */
2450 if (fdset_id <= mon_fdset->id) {
2451 if (fdset_id < mon_fdset->id) {
2459 if (mon_fdset == NULL) {
2460 int64_t fdset_id_prev = -1;
2461 MonFdset *mon_fdset_cur = QLIST_FIRST(&mon_fdsets);
2465 error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "fdset-id",
2466 "a non-negative value");
2467 qemu_mutex_unlock(&mon_fdsets_lock);
2470 /* Use specified fdset ID */
2471 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2472 mon_fdset_cur = mon_fdset;
2473 if (fdset_id < mon_fdset_cur->id) {
2478 /* Use first available fdset ID */
2479 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2480 mon_fdset_cur = mon_fdset;
2481 if (fdset_id_prev == mon_fdset_cur->id - 1) {
2482 fdset_id_prev = mon_fdset_cur->id;
2489 mon_fdset = g_malloc0(sizeof(*mon_fdset));
2491 mon_fdset->id = fdset_id;
2493 mon_fdset->id = fdset_id_prev + 1;
2496 /* The fdset list is ordered by fdset ID */
2497 if (!mon_fdset_cur) {
2498 QLIST_INSERT_HEAD(&mon_fdsets, mon_fdset, next);
2499 } else if (mon_fdset->id < mon_fdset_cur->id) {
2500 QLIST_INSERT_BEFORE(mon_fdset_cur, mon_fdset, next);
2502 QLIST_INSERT_AFTER(mon_fdset_cur, mon_fdset, next);
2506 mon_fdset_fd = g_malloc0(sizeof(*mon_fdset_fd));
2507 mon_fdset_fd->fd = fd;
2508 mon_fdset_fd->removed = false;
2510 mon_fdset_fd->opaque = g_strdup(opaque);
2512 QLIST_INSERT_HEAD(&mon_fdset->fds, mon_fdset_fd, next);
2514 fdinfo = g_malloc0(sizeof(*fdinfo));
2515 fdinfo->fdset_id = mon_fdset->id;
2516 fdinfo->fd = mon_fdset_fd->fd;
2518 qemu_mutex_unlock(&mon_fdsets_lock);
2522 int monitor_fdset_get_fd(int64_t fdset_id, int flags)
2527 MonFdset *mon_fdset;
2528 MonFdsetFd *mon_fdset_fd;
2532 qemu_mutex_lock(&mon_fdsets_lock);
2533 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2534 if (mon_fdset->id != fdset_id) {
2537 QLIST_FOREACH(mon_fdset_fd, &mon_fdset->fds, next) {
2538 mon_fd_flags = fcntl(mon_fdset_fd->fd, F_GETFL);
2539 if (mon_fd_flags == -1) {
2544 if ((flags & O_ACCMODE) == (mon_fd_flags & O_ACCMODE)) {
2545 ret = mon_fdset_fd->fd;
2555 qemu_mutex_unlock(&mon_fdsets_lock);
2560 int monitor_fdset_dup_fd_add(int64_t fdset_id, int dup_fd)
2562 MonFdset *mon_fdset;
2563 MonFdsetFd *mon_fdset_fd_dup;
2565 qemu_mutex_lock(&mon_fdsets_lock);
2566 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2567 if (mon_fdset->id != fdset_id) {
2570 QLIST_FOREACH(mon_fdset_fd_dup, &mon_fdset->dup_fds, next) {
2571 if (mon_fdset_fd_dup->fd == dup_fd) {
2575 mon_fdset_fd_dup = g_malloc0(sizeof(*mon_fdset_fd_dup));
2576 mon_fdset_fd_dup->fd = dup_fd;
2577 QLIST_INSERT_HEAD(&mon_fdset->dup_fds, mon_fdset_fd_dup, next);
2578 qemu_mutex_unlock(&mon_fdsets_lock);
2583 qemu_mutex_unlock(&mon_fdsets_lock);
2587 static int monitor_fdset_dup_fd_find_remove(int dup_fd, bool remove)
2589 MonFdset *mon_fdset;
2590 MonFdsetFd *mon_fdset_fd_dup;
2592 qemu_mutex_lock(&mon_fdsets_lock);
2593 QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
2594 QLIST_FOREACH(mon_fdset_fd_dup, &mon_fdset->dup_fds, next) {
2595 if (mon_fdset_fd_dup->fd == dup_fd) {
2597 QLIST_REMOVE(mon_fdset_fd_dup, next);
2598 if (QLIST_EMPTY(&mon_fdset->dup_fds)) {
2599 monitor_fdset_cleanup(mon_fdset);
2603 qemu_mutex_unlock(&mon_fdsets_lock);
2604 return mon_fdset->id;
2611 qemu_mutex_unlock(&mon_fdsets_lock);
2615 int monitor_fdset_dup_fd_find(int dup_fd)
2617 return monitor_fdset_dup_fd_find_remove(dup_fd, false);
2620 void monitor_fdset_dup_fd_remove(int dup_fd)
2622 monitor_fdset_dup_fd_find_remove(dup_fd, true);
2625 int monitor_fd_param(Monitor *mon, const char *fdname, Error **errp)
2628 Error *local_err = NULL;
2630 if (!qemu_isdigit(fdname[0]) && mon) {
2631 fd = monitor_get_fd(mon, fdname, &local_err);
2633 fd = qemu_parse_fd(fdname);
2635 error_setg(&local_err, "Invalid file descriptor number '%s'",
2640 error_propagate(errp, local_err);
2649 /* Please update hmp-commands.hx when adding or changing commands */
2650 static mon_cmd_t info_cmds[] = {
2651 #include "hmp-commands-info.h"
2655 /* mon_cmds and info_cmds would be sorted at runtime */
2656 static mon_cmd_t mon_cmds[] = {
2657 #include "hmp-commands.h"
2661 /*******************************************************************/
2663 static const char *pch;
2664 static sigjmp_buf expr_env;
2667 static void GCC_FMT_ATTR(2, 3) QEMU_NORETURN
2668 expr_error(Monitor *mon, const char *fmt, ...)
2672 monitor_vprintf(mon, fmt, ap);
2673 monitor_printf(mon, "\n");
2675 siglongjmp(expr_env, 1);
2678 /* return 0 if OK, -1 if not found */
2679 static int get_monitor_def(target_long *pval, const char *name)
2681 const MonitorDef *md = target_monitor_defs();
2682 CPUState *cs = mon_get_cpu();
2687 if (cs == NULL || md == NULL) {
2691 for(; md->name != NULL; md++) {
2692 if (compare_cmd(name, md->name)) {
2693 if (md->get_value) {
2694 *pval = md->get_value(md, md->offset);
2696 CPUArchState *env = mon_get_cpu_env();
2697 ptr = (uint8_t *)env + md->offset;
2700 *pval = *(int32_t *)ptr;
2703 *pval = *(target_long *)ptr;
2714 ret = target_get_monitor_def(cs, name, &tmp);
2716 *pval = (target_long) tmp;
2722 static void next(void)
2726 while (qemu_isspace(*pch))
2731 static int64_t expr_sum(Monitor *mon);
2733 static int64_t expr_unary(Monitor *mon)
2742 n = expr_unary(mon);
2746 n = -expr_unary(mon);
2750 n = ~expr_unary(mon);
2756 expr_error(mon, "')' expected");
2763 expr_error(mon, "character constant expected");
2767 expr_error(mon, "missing terminating \' character");
2777 while ((*pch >= 'a' && *pch <= 'z') ||
2778 (*pch >= 'A' && *pch <= 'Z') ||
2779 (*pch >= '0' && *pch <= '9') ||
2780 *pch == '_' || *pch == '.') {
2781 if ((q - buf) < sizeof(buf) - 1)
2785 while (qemu_isspace(*pch))
2788 ret = get_monitor_def(®, buf);
2790 expr_error(mon, "unknown register");
2795 expr_error(mon, "unexpected end of expression");
2800 n = strtoull(pch, &p, 0);
2801 if (errno == ERANGE) {
2802 expr_error(mon, "number too large");
2805 expr_error(mon, "invalid char '%c' in expression", *p);
2808 while (qemu_isspace(*pch))
2816 static int64_t expr_prod(Monitor *mon)
2821 val = expr_unary(mon);
2824 if (op != '*' && op != '/' && op != '%')
2827 val2 = expr_unary(mon);
2836 expr_error(mon, "division by zero");
2847 static int64_t expr_logic(Monitor *mon)
2852 val = expr_prod(mon);
2855 if (op != '&' && op != '|' && op != '^')
2858 val2 = expr_prod(mon);
2875 static int64_t expr_sum(Monitor *mon)
2880 val = expr_logic(mon);
2883 if (op != '+' && op != '-')
2886 val2 = expr_logic(mon);
2895 static int get_expr(Monitor *mon, int64_t *pval, const char **pp)
2898 if (sigsetjmp(expr_env, 0)) {
2902 while (qemu_isspace(*pch))
2904 *pval = expr_sum(mon);
2909 static int get_double(Monitor *mon, double *pval, const char **pp)
2911 const char *p = *pp;
2915 d = strtod(p, &tailp);
2917 monitor_printf(mon, "Number expected\n");
2920 if (d != d || d - d != 0) {
2921 /* NaN or infinity */
2922 monitor_printf(mon, "Bad number\n");
2931 * Store the command-name in cmdname, and return a pointer to
2932 * the remaining of the command string.
2934 static const char *get_command_name(const char *cmdline,
2935 char *cmdname, size_t nlen)
2938 const char *p, *pstart;
2941 while (qemu_isspace(*p))
2946 while (*p != '\0' && *p != '/' && !qemu_isspace(*p))
2951 memcpy(cmdname, pstart, len);
2952 cmdname[len] = '\0';
2957 * Read key of 'type' into 'key' and return the current
2960 static char *key_get_info(const char *type, char **key)
2968 p = strchr(type, ':');
2975 str = g_malloc(len + 1);
2976 memcpy(str, type, len);
2983 static int default_fmt_format = 'x';
2984 static int default_fmt_size = 4;
2986 static int is_valid_option(const char *c, const char *typestr)
2994 typestr = strstr(typestr, option);
2995 return (typestr != NULL);
2998 static const mon_cmd_t *search_dispatch_table(const mon_cmd_t *disp_table,
2999 const char *cmdname)
3001 const mon_cmd_t *cmd;
3003 for (cmd = disp_table; cmd->name != NULL; cmd++) {
3004 if (compare_cmd(cmdname, cmd->name)) {
3013 * Parse command name from @cmdp according to command table @table.
3014 * If blank, return NULL.
3015 * Else, if no valid command can be found, report to @mon, and return
3017 * Else, change @cmdp to point right behind the name, and return its
3018 * command table entry.
3019 * Do not assume the return value points into @table! It doesn't when
3020 * the command is found in a sub-command table.
3022 static const mon_cmd_t *monitor_parse_command(Monitor *mon,
3023 const char *cmdp_start,
3028 const mon_cmd_t *cmd;
3031 /* extract the command name */
3032 p = get_command_name(*cmdp, cmdname, sizeof(cmdname));
3036 cmd = search_dispatch_table(table, cmdname);
3038 monitor_printf(mon, "unknown command: '%.*s'\n",
3039 (int)(p - cmdp_start), cmdp_start);
3042 if (runstate_check(RUN_STATE_PRECONFIG) && !cmd_can_preconfig(cmd)) {
3043 monitor_printf(mon, "Command '%.*s' not available with -preconfig "
3044 "until after exit_preconfig.\n",
3045 (int)(p - cmdp_start), cmdp_start);
3049 /* filter out following useless space */
3050 while (qemu_isspace(*p)) {
3055 /* search sub command */
3056 if (cmd->sub_table != NULL && *p != '\0') {
3057 return monitor_parse_command(mon, cmdp_start, cmdp, cmd->sub_table);
3064 * Parse arguments for @cmd.
3065 * If it can't be parsed, report to @mon, and return NULL.
3066 * Else, insert command arguments into a QDict, and return it.
3067 * Note: On success, caller has to free the QDict structure.
3070 static QDict *monitor_parse_arguments(Monitor *mon,
3072 const mon_cmd_t *cmd)
3074 const char *typestr;
3077 const char *p = *endp;
3079 QDict *qdict = qdict_new();
3081 /* parse the parameters */
3082 typestr = cmd->args_type;
3084 typestr = key_get_info(typestr, &key);
3096 while (qemu_isspace(*p))
3098 if (*typestr == '?') {
3101 /* no optional string: NULL argument */
3105 ret = get_str(buf, sizeof(buf), &p);
3109 monitor_printf(mon, "%s: filename expected\n",
3113 monitor_printf(mon, "%s: block device name expected\n",
3117 monitor_printf(mon, "%s: string expected\n", cmd->name);
3122 qdict_put_str(qdict, key, buf);
3127 QemuOptsList *opts_list;
3130 opts_list = qemu_find_opts(key);
3131 if (!opts_list || opts_list->desc->name) {
3134 while (qemu_isspace(*p)) {
3139 if (get_str(buf, sizeof(buf), &p) < 0) {
3142 opts = qemu_opts_parse_noisily(opts_list, buf, true);
3146 qemu_opts_to_qdict(opts, qdict);
3147 qemu_opts_del(opts);
3152 int count, format, size;
3154 while (qemu_isspace(*p))
3160 if (qemu_isdigit(*p)) {
3162 while (qemu_isdigit(*p)) {
3163 count = count * 10 + (*p - '0');
3201 if (*p != '\0' && !qemu_isspace(*p)) {
3202 monitor_printf(mon, "invalid char in format: '%c'\n",
3207 format = default_fmt_format;
3208 if (format != 'i') {
3209 /* for 'i', not specifying a size gives -1 as size */
3211 size = default_fmt_size;
3212 default_fmt_size = size;
3214 default_fmt_format = format;
3217 format = default_fmt_format;
3218 if (format != 'i') {
3219 size = default_fmt_size;
3224 qdict_put_int(qdict, "count", count);
3225 qdict_put_int(qdict, "format", format);
3226 qdict_put_int(qdict, "size", size);
3235 while (qemu_isspace(*p))
3237 if (*typestr == '?' || *typestr == '.') {
3238 if (*typestr == '?') {
3246 while (qemu_isspace(*p))
3255 if (get_expr(mon, &val, &p))
3257 /* Check if 'i' is greater than 32-bit */
3258 if ((c == 'i') && ((val >> 32) & 0xffffffff)) {
3259 monitor_printf(mon, "\'%s\' has failed: ", cmd->name);
3260 monitor_printf(mon, "integer is for 32-bit values\n");
3262 } else if (c == 'M') {
3264 monitor_printf(mon, "enter a positive value\n");
3269 qdict_put_int(qdict, key, val);
3278 while (qemu_isspace(*p)) {
3281 if (*typestr == '?') {
3287 ret = qemu_strtosz_MiB(p, &end, &val);
3288 if (ret < 0 || val > INT64_MAX) {
3289 monitor_printf(mon, "invalid size\n");
3292 qdict_put_int(qdict, key, val);
3300 while (qemu_isspace(*p))
3302 if (*typestr == '?') {
3308 if (get_double(mon, &val, &p) < 0) {
3311 if (p[0] && p[1] == 's') {
3314 val /= 1e3; p += 2; break;
3316 val /= 1e6; p += 2; break;
3318 val /= 1e9; p += 2; break;
3321 if (*p && !qemu_isspace(*p)) {
3322 monitor_printf(mon, "Unknown unit suffix\n");
3325 qdict_put(qdict, key, qnum_from_double(val));
3333 while (qemu_isspace(*p)) {
3337 while (qemu_isgraph(*p)) {
3340 if (p - beg == 2 && !memcmp(beg, "on", p - beg)) {
3342 } else if (p - beg == 3 && !memcmp(beg, "off", p - beg)) {
3345 monitor_printf(mon, "Expected 'on' or 'off'\n");
3348 qdict_put_bool(qdict, key, val);
3353 const char *tmp = p;
3360 while (qemu_isspace(*p))
3365 if(!is_valid_option(p, typestr)) {
3367 monitor_printf(mon, "%s: unsupported option -%c\n",
3379 qdict_put_bool(qdict, key, true);
3386 /* package all remaining string */
3389 while (qemu_isspace(*p)) {
3392 if (*typestr == '?') {
3395 /* no remaining string: NULL argument */
3401 monitor_printf(mon, "%s: string expected\n",
3405 qdict_put_str(qdict, key, p);
3411 monitor_printf(mon, "%s: unknown type '%c'\n", cmd->name, c);
3417 /* check that all arguments were parsed */
3418 while (qemu_isspace(*p))
3421 monitor_printf(mon, "%s: extraneous characters at the end of line\n",
3429 qobject_unref(qdict);
3434 static void handle_hmp_command(Monitor *mon, const char *cmdline)
3437 const mon_cmd_t *cmd;
3438 const char *cmd_start = cmdline;
3440 trace_handle_hmp_command(mon, cmdline);
3442 cmd = monitor_parse_command(mon, cmdline, &cmdline, mon->cmd_table);
3447 qdict = monitor_parse_arguments(mon, &cmdline, cmd);
3449 while (cmdline > cmd_start && qemu_isspace(cmdline[-1])) {
3452 monitor_printf(mon, "Try \"help %.*s\" for more information\n",
3453 (int)(cmdline - cmd_start), cmd_start);
3457 cmd->cmd(mon, qdict);
3458 qobject_unref(qdict);
3461 static void cmd_completion(Monitor *mon, const char *name, const char *list)
3463 const char *p, *pstart;
3470 p = qemu_strchrnul(p, '|');
3472 if (len > sizeof(cmd) - 2)
3473 len = sizeof(cmd) - 2;
3474 memcpy(cmd, pstart, len);
3476 if (name[0] == '\0' || !strncmp(name, cmd, strlen(name))) {
3477 readline_add_completion(mon->rs, cmd);
3485 static void file_completion(Monitor *mon, const char *input)
3490 char file[1024], file_prefix[1024];
3494 p = strrchr(input, '/');
3497 pstrcpy(file_prefix, sizeof(file_prefix), input);
3498 pstrcpy(path, sizeof(path), ".");
3500 input_path_len = p - input + 1;
3501 memcpy(path, input, input_path_len);
3502 if (input_path_len > sizeof(path) - 1)
3503 input_path_len = sizeof(path) - 1;
3504 path[input_path_len] = '\0';
3505 pstrcpy(file_prefix, sizeof(file_prefix), p + 1);
3508 ffs = opendir(path);
3517 if (strcmp(d->d_name, ".") == 0 || strcmp(d->d_name, "..") == 0) {
3521 if (strstart(d->d_name, file_prefix, NULL)) {
3522 memcpy(file, input, input_path_len);
3523 if (input_path_len < sizeof(file))
3524 pstrcpy(file + input_path_len, sizeof(file) - input_path_len,
3526 /* stat the file to find out if it's a directory.
3527 * In that case add a slash to speed up typing long paths
3529 if (stat(file, &sb) == 0 && S_ISDIR(sb.st_mode)) {
3530 pstrcat(file, sizeof(file), "/");
3532 readline_add_completion(mon->rs, file);
3538 static const char *next_arg_type(const char *typestr)
3540 const char *p = strchr(typestr, ':');
3541 return (p != NULL ? ++p : typestr);
3544 static void add_completion_option(ReadLineState *rs, const char *str,
3547 if (!str || !option) {
3550 if (!strncmp(option, str, strlen(str))) {
3551 readline_add_completion(rs, option);
3555 void chardev_add_completion(ReadLineState *rs, int nb_args, const char *str)
3558 ChardevBackendInfoList *list, *start;
3564 readline_set_completion_index(rs, len);
3566 start = list = qmp_query_chardev_backends(NULL);
3568 const char *chr_name = list->value->name;
3570 if (!strncmp(chr_name, str, len)) {
3571 readline_add_completion(rs, chr_name);
3575 qapi_free_ChardevBackendInfoList(start);
3578 void netdev_add_completion(ReadLineState *rs, int nb_args, const char *str)
3587 readline_set_completion_index(rs, len);
3588 for (i = 0; i < NET_CLIENT_DRIVER__MAX; i++) {
3589 add_completion_option(rs, str, NetClientDriver_str(i));
3593 void device_add_completion(ReadLineState *rs, int nb_args, const char *str)
3603 readline_set_completion_index(rs, len);
3604 list = elt = object_class_get_list(TYPE_DEVICE, false);
3607 DeviceClass *dc = OBJECT_CLASS_CHECK(DeviceClass, elt->data,
3609 name = object_class_get_name(OBJECT_CLASS(dc));
3611 if (dc->user_creatable
3612 && !strncmp(name, str, len)) {
3613 readline_add_completion(rs, name);
3620 void object_add_completion(ReadLineState *rs, int nb_args, const char *str)
3630 readline_set_completion_index(rs, len);
3631 list = elt = object_class_get_list(TYPE_USER_CREATABLE, false);
3635 name = object_class_get_name(OBJECT_CLASS(elt->data));
3636 if (!strncmp(name, str, len) && strcmp(name, TYPE_USER_CREATABLE)) {
3637 readline_add_completion(rs, name);
3644 static void peripheral_device_del_completion(ReadLineState *rs,
3645 const char *str, size_t len)
3647 Object *peripheral = container_get(qdev_get_machine(), "/peripheral");
3648 GSList *list, *item;
3650 list = qdev_build_hotpluggable_device_list(peripheral);
3655 for (item = list; item; item = g_slist_next(item)) {
3656 DeviceState *dev = item->data;
3658 if (dev->id && !strncmp(str, dev->id, len)) {
3659 readline_add_completion(rs, dev->id);
3666 void chardev_remove_completion(ReadLineState *rs, int nb_args, const char *str)
3669 ChardevInfoList *list, *start;
3675 readline_set_completion_index(rs, len);
3677 start = list = qmp_query_chardev(NULL);
3679 ChardevInfo *chr = list->value;
3681 if (!strncmp(chr->label, str, len)) {
3682 readline_add_completion(rs, chr->label);
3686 qapi_free_ChardevInfoList(start);
3689 static void ringbuf_completion(ReadLineState *rs, const char *str)
3692 ChardevInfoList *list, *start;
3695 readline_set_completion_index(rs, len);
3697 start = list = qmp_query_chardev(NULL);
3699 ChardevInfo *chr_info = list->value;
3701 if (!strncmp(chr_info->label, str, len)) {
3702 Chardev *chr = qemu_chr_find(chr_info->label);
3703 if (chr && CHARDEV_IS_RINGBUF(chr)) {
3704 readline_add_completion(rs, chr_info->label);
3709 qapi_free_ChardevInfoList(start);
3712 void ringbuf_write_completion(ReadLineState *rs, int nb_args, const char *str)
3717 ringbuf_completion(rs, str);
3720 void device_del_completion(ReadLineState *rs, int nb_args, const char *str)
3729 readline_set_completion_index(rs, len);
3730 peripheral_device_del_completion(rs, str, len);
3733 void object_del_completion(ReadLineState *rs, int nb_args, const char *str)
3735 ObjectPropertyInfoList *list, *start;
3742 readline_set_completion_index(rs, len);
3744 start = list = qmp_qom_list("/objects", NULL);
3746 ObjectPropertyInfo *info = list->value;
3748 if (!strncmp(info->type, "child<", 5)
3749 && !strncmp(info->name, str, len)) {
3750 readline_add_completion(rs, info->name);
3754 qapi_free_ObjectPropertyInfoList(start);
3757 void sendkey_completion(ReadLineState *rs, int nb_args, const char *str)
3766 sep = strrchr(str, '-');
3771 readline_set_completion_index(rs, len);
3772 for (i = 0; i < Q_KEY_CODE__MAX; i++) {
3773 if (!strncmp(str, QKeyCode_str(i), len)) {
3774 readline_add_completion(rs, QKeyCode_str(i));
3779 void set_link_completion(ReadLineState *rs, int nb_args, const char *str)
3784 readline_set_completion_index(rs, len);
3786 NetClientState *ncs[MAX_QUEUE_NUM];
3788 count = qemu_find_net_clients_except(NULL, ncs,
3789 NET_CLIENT_DRIVER_NONE,
3791 for (i = 0; i < MIN(count, MAX_QUEUE_NUM); i++) {
3792 const char *name = ncs[i]->name;
3793 if (!strncmp(str, name, len)) {
3794 readline_add_completion(rs, name);
3797 } else if (nb_args == 3) {
3798 add_completion_option(rs, str, "on");
3799 add_completion_option(rs, str, "off");
3803 void netdev_del_completion(ReadLineState *rs, int nb_args, const char *str)
3806 NetClientState *ncs[MAX_QUEUE_NUM];
3813 readline_set_completion_index(rs, len);
3814 count = qemu_find_net_clients_except(NULL, ncs, NET_CLIENT_DRIVER_NIC,
3816 for (i = 0; i < MIN(count, MAX_QUEUE_NUM); i++) {
3818 const char *name = ncs[i]->name;
3819 if (strncmp(str, name, len)) {
3822 opts = qemu_opts_find(qemu_find_opts_err("netdev", NULL), name);
3824 readline_add_completion(rs, name);
3829 void info_trace_events_completion(ReadLineState *rs, int nb_args, const char *str)
3834 readline_set_completion_index(rs, len);
3836 TraceEventIter iter;
3838 char *pattern = g_strdup_printf("%s*", str);
3839 trace_event_iter_init(&iter, pattern);
3840 while ((ev = trace_event_iter_next(&iter)) != NULL) {
3841 readline_add_completion(rs, trace_event_get_name(ev));
3847 void trace_event_completion(ReadLineState *rs, int nb_args, const char *str)
3852 readline_set_completion_index(rs, len);
3854 TraceEventIter iter;
3856 char *pattern = g_strdup_printf("%s*", str);
3857 trace_event_iter_init(&iter, pattern);
3858 while ((ev = trace_event_iter_next(&iter)) != NULL) {
3859 readline_add_completion(rs, trace_event_get_name(ev));
3862 } else if (nb_args == 3) {
3863 add_completion_option(rs, str, "on");
3864 add_completion_option(rs, str, "off");
3868 void watchdog_action_completion(ReadLineState *rs, int nb_args, const char *str)
3875 readline_set_completion_index(rs, strlen(str));
3876 for (i = 0; i < WATCHDOG_ACTION__MAX; i++) {
3877 add_completion_option(rs, str, WatchdogAction_str(i));
3881 void migrate_set_capability_completion(ReadLineState *rs, int nb_args,
3887 readline_set_completion_index(rs, len);
3890 for (i = 0; i < MIGRATION_CAPABILITY__MAX; i++) {
3891 const char *name = MigrationCapability_str(i);
3892 if (!strncmp(str, name, len)) {
3893 readline_add_completion(rs, name);
3896 } else if (nb_args == 3) {
3897 add_completion_option(rs, str, "on");
3898 add_completion_option(rs, str, "off");
3902 void migrate_set_parameter_completion(ReadLineState *rs, int nb_args,
3908 readline_set_completion_index(rs, len);
3911 for (i = 0; i < MIGRATION_PARAMETER__MAX; i++) {
3912 const char *name = MigrationParameter_str(i);
3913 if (!strncmp(str, name, len)) {
3914 readline_add_completion(rs, name);
3920 static void vm_completion(ReadLineState *rs, const char *str)
3923 BlockDriverState *bs;
3924 BdrvNextIterator it;
3927 readline_set_completion_index(rs, len);
3929 for (bs = bdrv_first(&it); bs; bs = bdrv_next(&it)) {
3930 SnapshotInfoList *snapshots, *snapshot;
3931 AioContext *ctx = bdrv_get_aio_context(bs);
3934 aio_context_acquire(ctx);
3935 if (bdrv_can_snapshot(bs)) {
3936 ok = bdrv_query_snapshot_info_list(bs, &snapshots, NULL) == 0;
3938 aio_context_release(ctx);
3943 snapshot = snapshots;
3945 char *completion = snapshot->value->name;
3946 if (!strncmp(str, completion, len)) {
3947 readline_add_completion(rs, completion);
3949 completion = snapshot->value->id;
3950 if (!strncmp(str, completion, len)) {
3951 readline_add_completion(rs, completion);
3953 snapshot = snapshot->next;
3955 qapi_free_SnapshotInfoList(snapshots);
3960 void delvm_completion(ReadLineState *rs, int nb_args, const char *str)
3963 vm_completion(rs, str);
3967 void loadvm_completion(ReadLineState *rs, int nb_args, const char *str)
3970 vm_completion(rs, str);
3974 static void monitor_find_completion_by_table(Monitor *mon,
3975 const mon_cmd_t *cmd_table,
3979 const char *cmdname;
3981 const char *ptype, *old_ptype, *str, *name;
3982 const mon_cmd_t *cmd;
3983 BlockBackend *blk = NULL;
3986 /* command completion */
3991 readline_set_completion_index(mon->rs, strlen(cmdname));
3992 for (cmd = cmd_table; cmd->name != NULL; cmd++) {
3993 if (!runstate_check(RUN_STATE_PRECONFIG) ||
3994 cmd_can_preconfig(cmd)) {
3995 cmd_completion(mon, cmdname, cmd->name);
3999 /* find the command */
4000 for (cmd = cmd_table; cmd->name != NULL; cmd++) {
4001 if (compare_cmd(args[0], cmd->name) &&
4002 (!runstate_check(RUN_STATE_PRECONFIG) ||
4003 cmd_can_preconfig(cmd))) {
4011 if (cmd->sub_table) {
4012 /* do the job again */
4013 monitor_find_completion_by_table(mon, cmd->sub_table,
4014 &args[1], nb_args - 1);
4017 if (cmd->command_completion) {
4018 cmd->command_completion(mon->rs, nb_args, args[nb_args - 1]);
4022 ptype = next_arg_type(cmd->args_type);
4023 for(i = 0; i < nb_args - 2; i++) {
4024 if (*ptype != '\0') {
4025 ptype = next_arg_type(ptype);
4026 while (*ptype == '?')
4027 ptype = next_arg_type(ptype);
4030 str = args[nb_args - 1];
4032 while (*ptype == '-' && old_ptype != ptype) {
4034 ptype = next_arg_type(ptype);
4038 /* file completion */
4039 readline_set_completion_index(mon->rs, strlen(str));
4040 file_completion(mon, str);
4043 /* block device name completion */
4044 readline_set_completion_index(mon->rs, strlen(str));
4045 while ((blk = blk_next(blk)) != NULL) {
4046 name = blk_name(blk);
4047 if (str[0] == '\0' ||
4048 !strncmp(name, str, strlen(str))) {
4049 readline_add_completion(mon->rs, name);
4055 if (!strcmp(cmd->name, "help|?")) {
4056 monitor_find_completion_by_table(mon, cmd_table,
4057 &args[1], nb_args - 1);
4066 static void monitor_find_completion(void *opaque,
4067 const char *cmdline)
4069 Monitor *mon = opaque;
4070 char *args[MAX_ARGS];
4073 /* 1. parse the cmdline */
4074 if (parse_cmdline(cmdline, &nb_args, args) < 0) {
4078 /* if the line ends with a space, it means we want to complete the
4080 len = strlen(cmdline);
4081 if (len > 0 && qemu_isspace(cmdline[len - 1])) {
4082 if (nb_args >= MAX_ARGS) {
4085 args[nb_args++] = g_strdup("");
4088 /* 2. auto complete according to args */
4089 monitor_find_completion_by_table(mon, mon->cmd_table, args, nb_args);
4092 free_cmdline_args(args, nb_args);
4095 static int monitor_can_read(void *opaque)
4097 Monitor *mon = opaque;
4099 return !atomic_mb_read(&mon->suspend_cnt);
4103 * Emit QMP response @rsp with ID @id to @mon.
4104 * Null @rsp can only happen for commands with QCO_NO_SUCCESS_RESP.
4105 * Nothing is emitted then.
4107 static void monitor_qmp_respond(Monitor *mon, QDict *rsp, QObject *id)
4111 qdict_put_obj(rsp, "id", qobject_ref(id));
4114 qmp_queue_response(mon, rsp);
4118 static void monitor_qmp_dispatch(Monitor *mon, QObject *req, QObject *id)
4127 rsp = qmp_dispatch(mon->qmp.commands, req, qmp_oob_enabled(mon));
4131 if (mon->qmp.commands == &qmp_cap_negotiation_commands) {
4132 error = qdict_get_qdict(rsp, "error");
4134 && !g_strcmp0(qdict_get_try_str(error, "class"),
4135 QapiErrorClass_str(ERROR_CLASS_COMMAND_NOT_FOUND))) {
4136 /* Provide a more useful error message */
4137 qdict_del(error, "desc");
4138 qdict_put_str(error, "desc", "Expecting capabilities negotiation"
4139 " with 'qmp_capabilities'");
4143 monitor_qmp_respond(mon, rsp, id);
4148 * Pop one QMP request from monitor queues, return NULL if not found.
4149 * We are using round-robin fashion to pop the request, to avoid
4150 * processing commands only on a very busy monitor. To achieve that,
4151 * when we process one request on a specific monitor, we put that
4152 * monitor to the end of mon_list queue.
4154 static QMPRequest *monitor_qmp_requests_pop_any(void)
4156 QMPRequest *req_obj = NULL;
4159 qemu_mutex_lock(&monitor_lock);
4161 QTAILQ_FOREACH(mon, &mon_list, entry) {
4162 qemu_mutex_lock(&mon->qmp.qmp_queue_lock);
4163 req_obj = g_queue_pop_head(mon->qmp.qmp_requests);
4164 qemu_mutex_unlock(&mon->qmp.qmp_queue_lock);
4172 * We found one request on the monitor. Degrade this monitor's
4173 * priority to lowest by re-inserting it to end of queue.
4175 QTAILQ_REMOVE(&mon_list, mon, entry);
4176 QTAILQ_INSERT_TAIL(&mon_list, mon, entry);
4179 qemu_mutex_unlock(&monitor_lock);
4184 static void monitor_qmp_bh_dispatcher(void *data)
4186 QMPRequest *req_obj = monitor_qmp_requests_pop_any();
4194 trace_monitor_qmp_cmd_in_band(qobject_get_try_str(req_obj->id) ?: "");
4195 monitor_qmp_dispatch(req_obj->mon, req_obj->req, req_obj->id);
4197 assert(req_obj->err);
4198 rsp = qmp_error_response(req_obj->err);
4199 monitor_qmp_respond(req_obj->mon, rsp, NULL);
4203 if (req_obj->need_resume) {
4204 /* Pairs with the monitor_suspend() in handle_qmp_command() */
4205 monitor_resume(req_obj->mon);
4207 qmp_request_free(req_obj);
4209 /* Reschedule instead of looping so the main loop stays responsive */
4210 qemu_bh_schedule(qmp_dispatcher_bh);
4213 #define QMP_REQ_QUEUE_LEN_MAX (8)
4215 static void handle_qmp_command(JSONMessageParser *parser, GQueue *tokens)
4217 QObject *req, *id = NULL;
4219 MonitorQMP *mon_qmp = container_of(parser, MonitorQMP, parser);
4220 Monitor *mon = container_of(mon_qmp, Monitor, qmp);
4222 QMPRequest *req_obj;
4224 req = json_parser_parse_err(tokens, NULL, &err);
4226 /* json_parser_parse_err() sucks: can fail without setting @err */
4227 error_setg(&err, QERR_JSON_PARSING);
4230 qdict = qobject_to(QDict, req);
4232 id = qobject_ref(qdict_get(qdict, "id"));
4233 qdict_del(qdict, "id");
4234 } /* else will fail qmp_dispatch() */
4236 if (trace_event_get_state_backends(TRACE_HANDLE_QMP_COMMAND)) {
4237 QString *req_json = qobject_to_json(req);
4238 trace_handle_qmp_command(mon, qstring_get_str(req_json));
4239 qobject_unref(req_json);
4242 if (qdict && qmp_is_oob(qdict)) {
4243 /* Out-of-band (OOB) requests are executed directly in parser. */
4244 trace_monitor_qmp_cmd_out_of_band(qobject_get_try_str(id)
4246 monitor_qmp_dispatch(mon, req, id);
4250 req_obj = g_new0(QMPRequest, 1);
4255 req_obj->need_resume = false;
4257 /* Protect qmp_requests and fetching its length. */
4258 qemu_mutex_lock(&mon->qmp.qmp_queue_lock);
4261 * If OOB is not enabled on the current monitor, we'll emulate the
4262 * old behavior that we won't process the current monitor any more
4263 * until it has responded. This helps make sure that as long as
4264 * OOB is not enabled, the server will never drop any command.
4266 if (!qmp_oob_enabled(mon)) {
4267 monitor_suspend(mon);
4268 req_obj->need_resume = true;
4270 /* Drop the request if queue is full. */
4271 if (mon->qmp.qmp_requests->length >= QMP_REQ_QUEUE_LEN_MAX) {
4272 qemu_mutex_unlock(&mon->qmp.qmp_queue_lock);
4274 * FIXME @id's scope is just @mon, and broadcasting it is
4275 * wrong. If another monitor's client has a command with
4276 * the same ID in flight, the event will incorrectly claim
4277 * that command was dropped.
4279 qapi_event_send_command_dropped(id,
4280 COMMAND_DROP_REASON_QUEUE_FULL,
4282 qmp_request_free(req_obj);
4288 * Put the request to the end of queue so that requests will be
4289 * handled in time order. Ownership for req_obj, req, id,
4290 * etc. will be delivered to the handler side.
4292 g_queue_push_tail(mon->qmp.qmp_requests, req_obj);
4293 qemu_mutex_unlock(&mon->qmp.qmp_queue_lock);
4295 /* Kick the dispatcher routine */
4296 qemu_bh_schedule(qmp_dispatcher_bh);
4299 static void monitor_qmp_read(void *opaque, const uint8_t *buf, int size)
4301 Monitor *mon = opaque;
4303 json_message_parser_feed(&mon->qmp.parser, (const char *) buf, size);
4306 static void monitor_read(void *opaque, const uint8_t *buf, int size)
4308 Monitor *old_mon = cur_mon;
4314 for (i = 0; i < size; i++)
4315 readline_handle_byte(cur_mon->rs, buf[i]);
4317 if (size == 0 || buf[size - 1] != 0)
4318 monitor_printf(cur_mon, "corrupted command\n");
4320 handle_hmp_command(cur_mon, (char *)buf);
4326 static void monitor_command_cb(void *opaque, const char *cmdline,
4327 void *readline_opaque)
4329 Monitor *mon = opaque;
4331 monitor_suspend(mon);
4332 handle_hmp_command(mon, cmdline);
4333 monitor_resume(mon);
4336 int monitor_suspend(Monitor *mon)
4338 if (monitor_is_hmp_non_interactive(mon)) {
4342 atomic_inc(&mon->suspend_cnt);
4344 if (monitor_is_qmp(mon)) {
4346 * Kick I/O thread to make sure this takes effect. It'll be
4347 * evaluated again in prepare() of the watch object.
4349 aio_notify(iothread_get_aio_context(mon_iothread));
4352 trace_monitor_suspend(mon, 1);
4356 void monitor_resume(Monitor *mon)
4358 if (monitor_is_hmp_non_interactive(mon)) {
4362 if (atomic_dec_fetch(&mon->suspend_cnt) == 0) {
4363 if (monitor_is_qmp(mon)) {
4365 * For QMP monitors that are running in I/O thread, let's
4366 * kick the thread in case it's sleeping.
4368 if (mon->use_io_thread) {
4369 aio_notify(iothread_get_aio_context(mon_iothread));
4373 readline_show_prompt(mon->rs);
4376 trace_monitor_suspend(mon, -1);
4379 static QDict *qmp_greeting(Monitor *mon)
4381 QList *cap_list = qlist_new();
4382 QObject *ver = NULL;
4385 qmp_marshal_query_version(NULL, &ver, NULL);
4387 for (cap = 0; cap < QMP_CAPABILITY__MAX; cap++) {
4388 if (!mon->use_io_thread && cap == QMP_CAPABILITY_OOB) {
4389 /* Monitors that are not using I/O thread won't support OOB */
4392 qlist_append_str(cap_list, QMPCapability_str(cap));
4395 return qdict_from_jsonf_nofail(
4396 "{'QMP': {'version': %p, 'capabilities': %p}}",
4400 static void monitor_qmp_caps_reset(Monitor *mon)
4402 memset(mon->qmp.qmp_caps, 0, sizeof(mon->qmp.qmp_caps));
4405 static void monitor_qmp_event(void *opaque, int event)
4408 Monitor *mon = opaque;
4411 case CHR_EVENT_OPENED:
4412 mon->qmp.commands = &qmp_cap_negotiation_commands;
4413 monitor_qmp_caps_reset(mon);
4414 data = qmp_greeting(mon);
4415 qmp_queue_response(mon, data);
4416 qobject_unref(data);
4419 case CHR_EVENT_CLOSED:
4421 * Note: this is only useful when the output of the chardev
4422 * backend is still open. For example, when the backend is
4423 * stdio, it's possible that stdout is still open when stdin
4426 monitor_qmp_response_flush(mon);
4427 monitor_qmp_cleanup_queues(mon);
4428 json_message_parser_destroy(&mon->qmp.parser);
4429 json_message_parser_init(&mon->qmp.parser, handle_qmp_command);
4431 monitor_fdsets_cleanup();
4436 static void monitor_event(void *opaque, int event)
4438 Monitor *mon = opaque;
4441 case CHR_EVENT_MUX_IN:
4442 qemu_mutex_lock(&mon->mon_lock);
4444 qemu_mutex_unlock(&mon->mon_lock);
4445 if (mon->reset_seen) {
4446 readline_restart(mon->rs);
4447 monitor_resume(mon);
4450 atomic_mb_set(&mon->suspend_cnt, 0);
4454 case CHR_EVENT_MUX_OUT:
4455 if (mon->reset_seen) {
4456 if (atomic_mb_read(&mon->suspend_cnt) == 0) {
4457 monitor_printf(mon, "\n");
4460 monitor_suspend(mon);
4462 atomic_inc(&mon->suspend_cnt);
4464 qemu_mutex_lock(&mon->mon_lock);
4466 qemu_mutex_unlock(&mon->mon_lock);
4469 case CHR_EVENT_OPENED:
4470 monitor_printf(mon, "QEMU %s monitor - type 'help' for more "
4471 "information\n", QEMU_VERSION);
4472 if (!mon->mux_out) {
4473 readline_restart(mon->rs);
4474 readline_show_prompt(mon->rs);
4476 mon->reset_seen = 1;
4480 case CHR_EVENT_CLOSED:
4482 monitor_fdsets_cleanup();
4488 compare_mon_cmd(const void *a, const void *b)
4490 return strcmp(((const mon_cmd_t *)a)->name,
4491 ((const mon_cmd_t *)b)->name);
4494 static void sortcmdlist(void)
4497 int elem_size = sizeof(mon_cmd_t);
4499 array_num = sizeof(mon_cmds)/elem_size-1;
4500 qsort((void *)mon_cmds, array_num, elem_size, compare_mon_cmd);
4502 array_num = sizeof(info_cmds)/elem_size-1;
4503 qsort((void *)info_cmds, array_num, elem_size, compare_mon_cmd);
4506 static GMainContext *monitor_get_io_context(void)
4508 return iothread_get_g_main_context(mon_iothread);
4511 static AioContext *monitor_get_aio_context(void)
4513 return iothread_get_aio_context(mon_iothread);
4516 static void monitor_iothread_init(void)
4518 mon_iothread = iothread_create("mon_iothread", &error_abort);
4521 * This MUST be on main loop thread since we have commands that
4522 * have assumption to be run on main loop thread. It would be
4523 * nice that one day we can remove this assumption in the future.
4525 qmp_dispatcher_bh = aio_bh_new(iohandler_get_aio_context(),
4526 monitor_qmp_bh_dispatcher,
4530 * Unlike the dispatcher BH, this must be run on the monitor I/O
4531 * thread, so that monitors that are using I/O thread will make
4532 * sure read/write operations are all done on the I/O thread.
4534 qmp_respond_bh = aio_bh_new(monitor_get_aio_context(),
4535 monitor_qmp_bh_responder,
4539 void monitor_init_globals(void)
4541 monitor_init_qmp_commands();
4542 monitor_qapi_event_init();
4544 qemu_mutex_init(&monitor_lock);
4545 qemu_mutex_init(&mon_fdsets_lock);
4546 monitor_iothread_init();
4549 /* These functions just adapt the readline interface in a typesafe way. We
4550 * could cast function pointers but that discards compiler checks.
4552 static void GCC_FMT_ATTR(2, 3) monitor_readline_printf(void *opaque,
4553 const char *fmt, ...)
4557 monitor_vprintf(opaque, fmt, ap);
4561 static void monitor_readline_flush(void *opaque)
4563 monitor_flush(opaque);
4567 * Print to current monitor if we have one, else to stderr.
4568 * TODO should return int, so callers can calculate width, but that
4569 * requires surgery to monitor_vprintf(). Left for another day.
4571 void error_vprintf(const char *fmt, va_list ap)
4573 if (cur_mon && !monitor_cur_is_qmp()) {
4574 monitor_vprintf(cur_mon, fmt, ap);
4576 vfprintf(stderr, fmt, ap);
4580 void error_vprintf_unless_qmp(const char *fmt, va_list ap)
4582 if (cur_mon && !monitor_cur_is_qmp()) {
4583 monitor_vprintf(cur_mon, fmt, ap);
4584 } else if (!cur_mon) {
4585 vfprintf(stderr, fmt, ap);
4589 static void monitor_list_append(Monitor *mon)
4591 qemu_mutex_lock(&monitor_lock);
4592 QTAILQ_INSERT_HEAD(&mon_list, mon, entry);
4593 qemu_mutex_unlock(&monitor_lock);
4596 static void monitor_qmp_setup_handlers_bh(void *opaque)
4598 Monitor *mon = opaque;
4599 GMainContext *context;
4601 if (mon->use_io_thread) {
4603 * When @use_io_thread is set, we use the global shared dedicated
4604 * I/O thread for this monitor to handle input/output.
4606 context = monitor_get_io_context();
4607 /* We should have inited globals before reaching here. */
4610 /* The default main loop, which is the main thread */
4614 qemu_chr_fe_set_handlers(&mon->chr, monitor_can_read, monitor_qmp_read,
4615 monitor_qmp_event, NULL, mon, context, true);
4616 monitor_list_append(mon);
4619 void monitor_init(Chardev *chr, int flags)
4621 Monitor *mon = g_malloc(sizeof(*mon));
4622 bool use_readline = flags & MONITOR_USE_READLINE;
4623 bool use_oob = flags & MONITOR_USE_OOB;
4626 if (CHARDEV_IS_MUX(chr)) {
4627 error_report("Monitor out-of-band is not supported with "
4628 "MUX typed chardev backend");
4632 error_report("Monitor out-of-band is only supported by QMP");
4637 monitor_data_init(mon, false, use_oob);
4639 qemu_chr_fe_init(&mon->chr, chr, &error_abort);
4642 mon->rs = readline_init(monitor_readline_printf,
4643 monitor_readline_flush,
4645 monitor_find_completion);
4646 monitor_read_command(mon, 0);
4649 if (monitor_is_qmp(mon)) {
4650 qemu_chr_fe_set_echo(&mon->chr, true);
4651 json_message_parser_init(&mon->qmp.parser, handle_qmp_command);
4652 if (mon->use_io_thread) {
4654 * Make sure the old iowatch is gone. It's possible when
4655 * e.g. the chardev is in client mode, with wait=on.
4657 remove_fd_in_watch(chr);
4659 * We can't call qemu_chr_fe_set_handlers() directly here
4660 * since during the procedure the chardev will be active
4661 * and running in monitor I/O thread, while we'll still do
4662 * something before returning from it, which is a possible
4663 * race too. To avoid that, we just create a BH to setup
4666 aio_bh_schedule_oneshot(monitor_get_aio_context(),
4667 monitor_qmp_setup_handlers_bh, mon);
4668 /* We'll add this to mon_list in the BH when setup done */
4671 qemu_chr_fe_set_handlers(&mon->chr, monitor_can_read,
4672 monitor_qmp_read, monitor_qmp_event,
4673 NULL, mon, NULL, true);
4676 qemu_chr_fe_set_handlers(&mon->chr, monitor_can_read, monitor_read,
4677 monitor_event, NULL, mon, NULL, true);
4680 monitor_list_append(mon);
4683 void monitor_cleanup(void)
4685 Monitor *mon, *next;
4688 * We need to explicitly stop the I/O thread (but not destroy it),
4689 * cleanup the monitor resources, then destroy the I/O thread since
4690 * we need to unregister from chardev below in
4691 * monitor_data_destroy(), and chardev is not thread-safe yet
4693 iothread_stop(mon_iothread);
4696 * After we have I/O thread to send responses, it's possible that
4697 * when we stop the I/O thread there are still replies queued in the
4698 * responder queue. Flush all of them. Note that even after this
4699 * flush it's still possible that out buffer is not flushed.
4700 * It'll be done in below monitor_flush() as the last resort.
4702 monitor_qmp_bh_responder(NULL);
4704 qemu_mutex_lock(&monitor_lock);
4705 QTAILQ_FOREACH_SAFE(mon, &mon_list, entry, next) {
4706 QTAILQ_REMOVE(&mon_list, mon, entry);
4708 monitor_data_destroy(mon);
4711 qemu_mutex_unlock(&monitor_lock);
4713 /* QEMUBHs needs to be deleted before destroying the I/O thread */
4714 qemu_bh_delete(qmp_dispatcher_bh);
4715 qmp_dispatcher_bh = NULL;
4716 qemu_bh_delete(qmp_respond_bh);
4717 qmp_respond_bh = NULL;
4719 iothread_destroy(mon_iothread);
4720 mon_iothread = NULL;
4723 QemuOptsList qemu_mon_opts = {
4725 .implied_opt_name = "chardev",
4726 .head = QTAILQ_HEAD_INITIALIZER(qemu_mon_opts.head),
4730 .type = QEMU_OPT_STRING,
4733 .type = QEMU_OPT_STRING,
4736 .type = QEMU_OPT_BOOL,
4739 .type = QEMU_OPT_BOOL,
4741 { /* end of list */ }
4746 void qmp_rtc_reset_reinjection(Error **errp)
4748 error_setg(errp, QERR_FEATURE_DISABLED, "rtc-reset-reinjection");
4751 SevInfo *qmp_query_sev(Error **errp)
4753 error_setg(errp, QERR_FEATURE_DISABLED, "query-sev");
4757 SevLaunchMeasureInfo *qmp_query_sev_launch_measure(Error **errp)
4759 error_setg(errp, QERR_FEATURE_DISABLED, "query-sev-launch-measure");
4763 SevCapability *qmp_query_sev_capabilities(Error **errp)
4765 error_setg(errp, QERR_FEATURE_DISABLED, "query-sev-capabilities");
4770 #ifndef TARGET_S390X
4771 void qmp_dump_skeys(const char *filename, Error **errp)
4773 error_setg(errp, QERR_FEATURE_DISABLED, "dump-skeys");
4778 GICCapabilityList *qmp_query_gic_capabilities(Error **errp)
4780 error_setg(errp, QERR_FEATURE_DISABLED, "query-gic-capabilities");
4785 HotpluggableCPUList *qmp_query_hotpluggable_cpus(Error **errp)
4787 MachineState *ms = MACHINE(qdev_get_machine());
4788 MachineClass *mc = MACHINE_GET_CLASS(ms);
4790 if (!mc->has_hotpluggable_cpus) {
4791 error_setg(errp, QERR_FEATURE_DISABLED, "query-hotpluggable-cpus");
4795 return machine_query_hotpluggable_cpus(ms);