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monitor.c
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/*
* QEMU monitor
*
* Copyright (c) 2003-2004 Fabrice Bellard
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
#include "qemu/osdep.h"
#include <dirent.h>
#include "qemu-common.h"
#include "cpu.h"
#include "hw/hw.h"
#include "monitor/qdev.h"
#include "hw/usb.h"
#include "hw/i386/pc.h"
#include "hw/pci/pci.h"
#include "sysemu/watchdog.h"
#include "hw/loader.h"
#include "exec/gdbstub.h"
#include "net/net.h"
#include "net/slirp.h"
#include "sysemu/char.h"
#include "ui/qemu-spice.h"
#include "sysemu/sysemu.h"
#include "sysemu/numa.h"
#include "monitor/monitor.h"
#include "qemu/readline.h"
#include "ui/console.h"
#include "ui/input.h"
#include "sysemu/blockdev.h"
#include "sysemu/block-backend.h"
#include "audio/audio.h"
#include "disas/disas.h"
#include "sysemu/balloon.h"
#include "qemu/timer.h"
#include "migration/migration.h"
#include "sysemu/kvm.h"
#include "qemu/acl.h"
#include "sysemu/tpm.h"
#include "qapi/qmp/qerror.h"
#include "qapi/qmp/types.h"
#include "qapi/qmp/qjson.h"
#include "qapi/qmp/json-streamer.h"
#include "qapi/qmp/json-parser.h"
#include "qom/object_interfaces.h"
#include "cpu.h"
#include "trace.h"
#include "trace/control.h"
#include "monitor/hmp-target.h"
#ifdef CONFIG_TRACE_SIMPLE
#include "trace/simple.h"
#endif
#include "exec/memory.h"
#include "exec/exec-all.h"
#include "qemu/log.h"
#include "qmp-commands.h"
#include "hmp.h"
#include "qemu/thread.h"
#include "block/qapi.h"
#include "qapi/qmp-event.h"
#include "qapi-event.h"
#include "qmp-introspect.h"
#include "sysemu/block-backend.h"
#include "sysemu/qtest.h"
#include "qemu/cutils.h"
#include "qapi/qmp/dispatch.h"
/* for hmp_info_irq/pic */
#if defined(TARGET_SPARC)
#include "hw/sparc/sun4m.h"
#endif
#include "hw/lm32/lm32_pic.h"
#if defined(TARGET_S390X)
#include "hw/s390x/storage-keys.h"
#endif
/*
* Supported types:
*
* 'F' filename
* 'B' block device name
* 's' string (accept optional quote)
* 'S' it just appends the rest of the string (accept optional quote)
* 'O' option string of the form NAME=VALUE,...
* parsed according to QemuOptsList given by its name
* Example: 'device:O' uses qemu_device_opts.
* Restriction: only lists with empty desc are supported
* TODO lift the restriction
* 'i' 32 bit integer
* 'l' target long (32 or 64 bit)
* 'M' Non-negative target long (32 or 64 bit), in user mode the
* value is multiplied by 2^20 (think Mebibyte)
* 'o' octets (aka bytes)
* user mode accepts an optional E, e, P, p, T, t, G, g, M, m,
* K, k suffix, which multiplies the value by 2^60 for suffixes E
* and e, 2^50 for suffixes P and p, 2^40 for suffixes T and t,
* 2^30 for suffixes G and g, 2^20 for M and m, 2^10 for K and k
* 'T' double
* user mode accepts an optional ms, us, ns suffix,
* which divides the value by 1e3, 1e6, 1e9, respectively
* '/' optional gdb-like print format (like "/10x")
*
* '?' optional type (for all types, except '/')
* '.' other form of optional type (for 'i' and 'l')
* 'b' boolean
* user mode accepts "on" or "off"
* '-' optional parameter (eg. '-f')
*
*/
typedef struct mon_cmd_t {
const char *name;
const char *args_type;
const char *params;
const char *help;
void (*cmd)(Monitor *mon, const QDict *qdict);
/* @sub_table is a list of 2nd level of commands. If it does not exist,
* cmd should be used. If it exists, sub_table[?].cmd should be
* used, and cmd of 1st level plays the role of help function.
*/
struct mon_cmd_t *sub_table;
void (*command_completion)(ReadLineState *rs, int nb_args, const char *str);
} mon_cmd_t;
/* file descriptors passed via SCM_RIGHTS */
typedef struct mon_fd_t mon_fd_t;
struct mon_fd_t {
char *name;
int fd;
QLIST_ENTRY(mon_fd_t) next;
};
/* file descriptor associated with a file descriptor set */
typedef struct MonFdsetFd MonFdsetFd;
struct MonFdsetFd {
int fd;
bool removed;
char *opaque;
QLIST_ENTRY(MonFdsetFd) next;
};
/* file descriptor set containing fds passed via SCM_RIGHTS */
typedef struct MonFdset MonFdset;
struct MonFdset {
int64_t id;
QLIST_HEAD(, MonFdsetFd) fds;
QLIST_HEAD(, MonFdsetFd) dup_fds;
QLIST_ENTRY(MonFdset) next;
};
typedef struct {
JSONMessageParser parser;
/*
* When a client connects, we're in capabilities negotiation mode.
* When command qmp_capabilities succeeds, we go into command
* mode.
*/
bool in_command_mode; /* are we in command mode? */
} MonitorQMP;
/*
* To prevent flooding clients, events can be throttled. The
* throttling is calculated globally, rather than per-Monitor
* instance.
*/
typedef struct MonitorQAPIEventState {
QAPIEvent event; /* Throttling state for this event type and... */
QDict *data; /* ... data, see qapi_event_throttle_equal() */
QEMUTimer *timer; /* Timer for handling delayed events */
QDict *qdict; /* Delayed event (if any) */
} MonitorQAPIEventState;
typedef struct {
int64_t rate; /* Minimum time (in ns) between two events */
} MonitorQAPIEventConf;
struct Monitor {
CharDriverState *chr;
int reset_seen;
int flags;
int suspend_cnt;
bool skip_flush;
QemuMutex out_lock;
QString *outbuf;
guint out_watch;
/* Read under either BQL or out_lock, written with BQL+out_lock. */
int mux_out;
ReadLineState *rs;
MonitorQMP qmp;
CPUState *mon_cpu;
BlockCompletionFunc *password_completion_cb;
void *password_opaque;
mon_cmd_t *cmd_table;
QLIST_HEAD(,mon_fd_t) fds;
QLIST_ENTRY(Monitor) entry;
};
/* QMP checker flags */
#define QMP_ACCEPT_UNKNOWNS 1
/* Protects mon_list, monitor_event_state. */
static QemuMutex monitor_lock;
static QLIST_HEAD(mon_list, Monitor) mon_list;
static QLIST_HEAD(mon_fdsets, MonFdset) mon_fdsets;
static int mon_refcount;
static mon_cmd_t mon_cmds[];
static mon_cmd_t info_cmds[];
Monitor *cur_mon;
static QEMUClockType event_clock_type = QEMU_CLOCK_REALTIME;
static void monitor_command_cb(void *opaque, const char *cmdline,
void *readline_opaque);
/**
* Is @mon a QMP monitor?
*/
static inline bool monitor_is_qmp(const Monitor *mon)
{
return (mon->flags & MONITOR_USE_CONTROL);
}
/**
* Is the current monitor, if any, a QMP monitor?
*/
bool monitor_cur_is_qmp(void)
{
return cur_mon && monitor_is_qmp(cur_mon);
}
void monitor_read_command(Monitor *mon, int show_prompt)
{
if (!mon->rs)
return;
readline_start(mon->rs, "(qemu) ", 0, monitor_command_cb, NULL);
if (show_prompt)
readline_show_prompt(mon->rs);
}
int monitor_read_password(Monitor *mon, ReadLineFunc *readline_func,
void *opaque)
{
if (mon->rs) {
readline_start(mon->rs, "Password: ", 1, readline_func, opaque);
/* prompt is printed on return from the command handler */
return 0;
} else {
monitor_printf(mon, "terminal does not support password prompting\n");
return -ENOTTY;
}
}
static void monitor_flush_locked(Monitor *mon);
static gboolean monitor_unblocked(GIOChannel *chan, GIOCondition cond,
void *opaque)
{
Monitor *mon = opaque;
qemu_mutex_lock(&mon->out_lock);
mon->out_watch = 0;
monitor_flush_locked(mon);
qemu_mutex_unlock(&mon->out_lock);
return FALSE;
}
/* Called with mon->out_lock held. */
static void monitor_flush_locked(Monitor *mon)
{
int rc;
size_t len;
const char *buf;
if (mon->skip_flush) {
return;
}
buf = qstring_get_str(mon->outbuf);
len = qstring_get_length(mon->outbuf);
if (len && !mon->mux_out) {
rc = qemu_chr_fe_write(mon->chr, (const uint8_t *) buf, len);
if ((rc < 0 && errno != EAGAIN) || (rc == len)) {
/* all flushed or error */
QDECREF(mon->outbuf);
mon->outbuf = qstring_new();
return;
}
if (rc > 0) {
/* partial write */
QString *tmp = qstring_from_str(buf + rc);
QDECREF(mon->outbuf);
mon->outbuf = tmp;
}
if (mon->out_watch == 0) {
mon->out_watch = qemu_chr_fe_add_watch(mon->chr, G_IO_OUT|G_IO_HUP,
monitor_unblocked, mon);
}
}
}
void monitor_flush(Monitor *mon)
{
qemu_mutex_lock(&mon->out_lock);
monitor_flush_locked(mon);
qemu_mutex_unlock(&mon->out_lock);
}
/* flush at every end of line */
static void monitor_puts(Monitor *mon, const char *str)
{
char c;
qemu_mutex_lock(&mon->out_lock);
for(;;) {
c = *str++;
if (c == '\0')
break;
if (c == '\n') {
qstring_append_chr(mon->outbuf, '\r');
}
qstring_append_chr(mon->outbuf, c);
if (c == '\n') {
monitor_flush_locked(mon);
}
}
qemu_mutex_unlock(&mon->out_lock);
}
void monitor_vprintf(Monitor *mon, const char *fmt, va_list ap)
{
char *buf;
if (!mon)
return;
if (monitor_is_qmp(mon)) {
return;
}
buf = g_strdup_vprintf(fmt, ap);
monitor_puts(mon, buf);
g_free(buf);
}
void monitor_printf(Monitor *mon, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
monitor_vprintf(mon, fmt, ap);
va_end(ap);
}
int monitor_fprintf(FILE *stream, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
monitor_vprintf((Monitor *)stream, fmt, ap);
va_end(ap);
return 0;
}
static void monitor_json_emitter(Monitor *mon, const QObject *data)
{
QString *json;
json = mon->flags & MONITOR_USE_PRETTY ? qobject_to_json_pretty(data) :
qobject_to_json(data);
assert(json != NULL);
qstring_append_chr(json, '\n');
monitor_puts(mon, qstring_get_str(json));
QDECREF(json);
}
static MonitorQAPIEventConf monitor_qapi_event_conf[QAPI_EVENT__MAX] = {
/* Limit guest-triggerable events to 1 per second */
[QAPI_EVENT_RTC_CHANGE] = { 1000 * SCALE_MS },
[QAPI_EVENT_WATCHDOG] = { 1000 * SCALE_MS },
[QAPI_EVENT_BALLOON_CHANGE] = { 1000 * SCALE_MS },
[QAPI_EVENT_QUORUM_REPORT_BAD] = { 1000 * SCALE_MS },
[QAPI_EVENT_QUORUM_FAILURE] = { 1000 * SCALE_MS },
[QAPI_EVENT_VSERPORT_CHANGE] = { 1000 * SCALE_MS },
};
GHashTable *monitor_qapi_event_state;
/*
* Emits the event to every monitor instance, @event is only used for trace
* Called with monitor_lock held.
*/
static void monitor_qapi_event_emit(QAPIEvent event, QDict *qdict)
{
Monitor *mon;
trace_monitor_protocol_event_emit(event, qdict);
QLIST_FOREACH(mon, &mon_list, entry) {
if (monitor_is_qmp(mon) && mon->qmp.in_command_mode) {
monitor_json_emitter(mon, QOBJECT(qdict));
}
}
}
static void monitor_qapi_event_handler(void *opaque);
/*
* Queue a new event for emission to Monitor instances,
* applying any rate limiting if required.
*/
static void
monitor_qapi_event_queue(QAPIEvent event, QDict *qdict, Error **errp)
{
MonitorQAPIEventConf *evconf;
MonitorQAPIEventState *evstate;
assert(event < QAPI_EVENT__MAX);
evconf = &monitor_qapi_event_conf[event];
trace_monitor_protocol_event_queue(event, qdict, evconf->rate);
qemu_mutex_lock(&monitor_lock);
if (!evconf->rate) {
/* Unthrottled event */
monitor_qapi_event_emit(event, qdict);
} else {
QDict *data = qobject_to_qdict(qdict_get(qdict, "data"));
MonitorQAPIEventState key = { .event = event, .data = data };
evstate = g_hash_table_lookup(monitor_qapi_event_state, &key);
assert(!evstate || timer_pending(evstate->timer));
if (evstate) {
/*
* Timer is pending for (at least) evconf->rate ns after
* last send. Store event for sending when timer fires,
* replacing a prior stored event if any.
*/
QDECREF(evstate->qdict);
evstate->qdict = qdict;
QINCREF(evstate->qdict);
} else {
/*
* Last send was (at least) evconf->rate ns ago.
* Send immediately, and arm the timer to call
* monitor_qapi_event_handler() in evconf->rate ns. Any
* events arriving before then will be delayed until then.
*/
int64_t now = qemu_clock_get_ns(event_clock_type);
monitor_qapi_event_emit(event, qdict);
evstate = g_new(MonitorQAPIEventState, 1);
evstate->event = event;
evstate->data = data;
QINCREF(evstate->data);
evstate->qdict = NULL;
evstate->timer = timer_new_ns(event_clock_type,
monitor_qapi_event_handler,
evstate);
g_hash_table_add(monitor_qapi_event_state, evstate);
timer_mod_ns(evstate->timer, now + evconf->rate);
}
}
qemu_mutex_unlock(&monitor_lock);
}
/*
* This function runs evconf->rate ns after sending a throttled
* event.
* If another event has since been stored, send it.
*/
static void monitor_qapi_event_handler(void *opaque)
{
MonitorQAPIEventState *evstate = opaque;
MonitorQAPIEventConf *evconf = &monitor_qapi_event_conf[evstate->event];
trace_monitor_protocol_event_handler(evstate->event, evstate->qdict);
qemu_mutex_lock(&monitor_lock);
if (evstate->qdict) {
int64_t now = qemu_clock_get_ns(event_clock_type);
monitor_qapi_event_emit(evstate->event, evstate->qdict);
QDECREF(evstate->qdict);
evstate->qdict = NULL;
timer_mod_ns(evstate->timer, now + evconf->rate);
} else {
g_hash_table_remove(monitor_qapi_event_state, evstate);
QDECREF(evstate->data);
timer_free(evstate->timer);
g_free(evstate);
}
qemu_mutex_unlock(&monitor_lock);
}
static unsigned int qapi_event_throttle_hash(const void *key)
{
const MonitorQAPIEventState *evstate = key;
unsigned int hash = evstate->event * 255;
if (evstate->event == QAPI_EVENT_VSERPORT_CHANGE) {
hash += g_str_hash(qdict_get_str(evstate->data, "id"));
}
if (evstate->event == QAPI_EVENT_QUORUM_REPORT_BAD) {
hash += g_str_hash(qdict_get_str(evstate->data, "node-name"));
}
return hash;
}
static gboolean qapi_event_throttle_equal(const void *a, const void *b)
{
const MonitorQAPIEventState *eva = a;
const MonitorQAPIEventState *evb = b;
if (eva->event != evb->event) {
return FALSE;
}
if (eva->event == QAPI_EVENT_VSERPORT_CHANGE) {
return !strcmp(qdict_get_str(eva->data, "id"),
qdict_get_str(evb->data, "id"));
}
if (eva->event == QAPI_EVENT_QUORUM_REPORT_BAD) {
return !strcmp(qdict_get_str(eva->data, "node-name"),
qdict_get_str(evb->data, "node-name"));
}
return TRUE;
}
static void monitor_qapi_event_init(void)
{
if (qtest_enabled()) {
event_clock_type = QEMU_CLOCK_VIRTUAL;
}
monitor_qapi_event_state = g_hash_table_new(qapi_event_throttle_hash,
qapi_event_throttle_equal);
qmp_event_set_func_emit(monitor_qapi_event_queue);
}
void qmp_qmp_capabilities(Error **errp)
{
cur_mon->qmp.in_command_mode = true;
}
static void handle_hmp_command(Monitor *mon, const char *cmdline);
static void monitor_data_init(Monitor *mon)
{
memset(mon, 0, sizeof(Monitor));
qemu_mutex_init(&mon->out_lock);
mon->outbuf = qstring_new();
/* Use *mon_cmds by default. */
mon->cmd_table = mon_cmds;
}
static void monitor_data_destroy(Monitor *mon)
{
if (mon->chr) {
qemu_chr_add_handlers(mon->chr, NULL, NULL, NULL, NULL);
}
if (monitor_is_qmp(mon)) {
json_message_parser_destroy(&mon->qmp.parser);
}
g_free(mon->rs);
QDECREF(mon->outbuf);
qemu_mutex_destroy(&mon->out_lock);
}
char *qmp_human_monitor_command(const char *command_line, bool has_cpu_index,
int64_t cpu_index, Error **errp)
{
char *output = NULL;
Monitor *old_mon, hmp;
monitor_data_init(&hmp);
hmp.skip_flush = true;
old_mon = cur_mon;
cur_mon = &hmp;
if (has_cpu_index) {
int ret = monitor_set_cpu(cpu_index);
if (ret < 0) {
cur_mon = old_mon;
error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "cpu-index",
"a CPU number");
goto out;
}
}
handle_hmp_command(&hmp, command_line);
cur_mon = old_mon;
qemu_mutex_lock(&hmp.out_lock);
if (qstring_get_length(hmp.outbuf) > 0) {
output = g_strdup(qstring_get_str(hmp.outbuf));
} else {
output = g_strdup("");
}
qemu_mutex_unlock(&hmp.out_lock);
out:
monitor_data_destroy(&hmp);
return output;
}
static int compare_cmd(const char *name, const char *list)
{
const char *p, *pstart;
int len;
len = strlen(name);
p = list;
for(;;) {
pstart = p;
p = strchr(p, '|');
if (!p)
p = pstart + strlen(pstart);
if ((p - pstart) == len && !memcmp(pstart, name, len))
return 1;
if (*p == '\0')
break;
p++;
}
return 0;
}
static int get_str(char *buf, int buf_size, const char **pp)
{
const char *p;
char *q;
int c;
q = buf;
p = *pp;
while (qemu_isspace(*p)) {
p++;
}
if (*p == '\0') {
fail:
*q = '\0';
*pp = p;
return -1;
}
if (*p == '\"') {
p++;
while (*p != '\0' && *p != '\"') {
if (*p == '\\') {
p++;
c = *p++;
switch (c) {
case 'n':
c = '\n';
break;
case 'r':
c = '\r';
break;
case '\\':
case '\'':
case '\"':
break;
default:
printf("unsupported escape code: '\\%c'\n", c);
goto fail;
}
if ((q - buf) < buf_size - 1) {
*q++ = c;
}
} else {
if ((q - buf) < buf_size - 1) {
*q++ = *p;
}
p++;
}
}
if (*p != '\"') {
printf("unterminated string\n");
goto fail;
}
p++;
} else {
while (*p != '\0' && !qemu_isspace(*p)) {
if ((q - buf) < buf_size - 1) {
*q++ = *p;
}
p++;
}
}
*q = '\0';
*pp = p;
return 0;
}
#define MAX_ARGS 16
static void free_cmdline_args(char **args, int nb_args)
{
int i;
assert(nb_args <= MAX_ARGS);
for (i = 0; i < nb_args; i++) {
g_free(args[i]);
}
}
/*
* Parse the command line to get valid args.
* @cmdline: command line to be parsed.
* @pnb_args: location to store the number of args, must NOT be NULL.
* @args: location to store the args, which should be freed by caller, must
* NOT be NULL.
*
* Returns 0 on success, negative on failure.
*
* NOTE: this parser is an approximate form of the real command parser. Number
* of args have a limit of MAX_ARGS. If cmdline contains more, it will
* return with failure.
*/
static int parse_cmdline(const char *cmdline,
int *pnb_args, char **args)
{
const char *p;
int nb_args, ret;
char buf[1024];
p = cmdline;
nb_args = 0;
for (;;) {
while (qemu_isspace(*p)) {
p++;
}
if (*p == '\0') {
break;
}
if (nb_args >= MAX_ARGS) {
goto fail;
}
ret = get_str(buf, sizeof(buf), &p);
if (ret < 0) {
goto fail;
}
args[nb_args] = g_strdup(buf);
nb_args++;
}
*pnb_args = nb_args;
return 0;
fail:
free_cmdline_args(args, nb_args);
return -1;
}
static void help_cmd_dump_one(Monitor *mon,
const mon_cmd_t *cmd,
char **prefix_args,
int prefix_args_nb)
{
int i;
for (i = 0; i < prefix_args_nb; i++) {
monitor_printf(mon, "%s ", prefix_args[i]);
}
monitor_printf(mon, "%s %s -- %s\n", cmd->name, cmd->params, cmd->help);
}
/* @args[@arg_index] is the valid command need to find in @cmds */
static void help_cmd_dump(Monitor *mon, const mon_cmd_t *cmds,
char **args, int nb_args, int arg_index)
{
const mon_cmd_t *cmd;
/* No valid arg need to compare with, dump all in *cmds */
if (arg_index >= nb_args) {
for (cmd = cmds; cmd->name != NULL; cmd++) {
help_cmd_dump_one(mon, cmd, args, arg_index);
}
return;
}
/* Find one entry to dump */
for (cmd = cmds; cmd->name != NULL; cmd++) {
if (compare_cmd(args[arg_index], cmd->name)) {
if (cmd->sub_table) {
/* continue with next arg */
help_cmd_dump(mon, cmd->sub_table,
args, nb_args, arg_index + 1);
} else {
help_cmd_dump_one(mon, cmd, args, arg_index);
}
break;
}
}
}
static void help_cmd(Monitor *mon, const char *name)
{
char *args[MAX_ARGS];
int nb_args = 0;
/* 1. parse user input */
if (name) {
/* special case for log, directly dump and return */
if (!strcmp(name, "log")) {
const QEMULogItem *item;
monitor_printf(mon, "Log items (comma separated):\n");
monitor_printf(mon, "%-10s %s\n", "none", "remove all logs");
for (item = qemu_log_items; item->mask != 0; item++) {
monitor_printf(mon, "%-10s %s\n", item->name, item->help);
}
return;
}
if (parse_cmdline(name, &nb_args, args) < 0) {
return;
}
}
/* 2. dump the contents according to parsed args */
help_cmd_dump(mon, mon->cmd_table, args, nb_args, 0);
free_cmdline_args(args, nb_args);
}
static void do_help_cmd(Monitor *mon, const QDict *qdict)
{
help_cmd(mon, qdict_get_try_str(qdict, "name"));
}
static void hmp_trace_event(Monitor *mon, const QDict *qdict)
{
const char *tp_name = qdict_get_str(qdict, "name");
bool new_state = qdict_get_bool(qdict, "option");
bool has_vcpu = qdict_haskey(qdict, "vcpu");
int vcpu = qdict_get_try_int(qdict, "vcpu", 0);
Error *local_err = NULL;
if (vcpu < 0) {
monitor_printf(mon, "argument vcpu must be positive");
return;
}
qmp_trace_event_set_state(tp_name, new_state, true, true, has_vcpu, vcpu, &local_err);
if (local_err) {
error_report_err(local_err);
}
}
#ifdef CONFIG_TRACE_SIMPLE
static void hmp_trace_file(Monitor *mon, const QDict *qdict)
{
const char *op = qdict_get_try_str(qdict, "op");
const char *arg = qdict_get_try_str(qdict, "arg");
if (!op) {
st_print_trace_file_status((FILE *)mon, &monitor_fprintf);
} else if (!strcmp(op, "on")) {
st_set_trace_file_enabled(true);
} else if (!strcmp(op, "off")) {
st_set_trace_file_enabled(false);
} else if (!strcmp(op, "flush")) {
st_flush_trace_buffer();
} else if (!strcmp(op, "set")) {
if (arg) {
st_set_trace_file(arg);
}
} else {
monitor_printf(mon, "unexpected argument \"%s\"\n", op);
help_cmd(mon, "trace-file");
}
}
#endif
static void hmp_info_help(Monitor *mon, const QDict *qdict)
{
help_cmd(mon, "info");
}
static void query_commands_cb(QmpCommand *cmd, void *opaque)
{
CommandInfoList *info, **list = opaque;
if (!cmd->enabled) {
return;
}
info = g_malloc0(sizeof(*info));
info->value = g_malloc0(sizeof(*info->value));
info->value->name = g_strdup(cmd->name);
info->next = *list;
*list = info;
}
CommandInfoList *qmp_query_commands(Error **errp)
{
CommandInfoList *list = NULL;
qmp_for_each_command(query_commands_cb, &list);
return list;
}
EventInfoList *qmp_query_events(Error **errp)
{
EventInfoList *info, *ev_list = NULL;
QAPIEvent e;
for (e = 0 ; e < QAPI_EVENT__MAX ; e++) {
const char *event_name = QAPIEvent_lookup[e];
assert(event_name != NULL);
info = g_malloc0(sizeof(*info));
info->value = g_malloc0(sizeof(*info->value));
info->value->name = g_strdup(event_name);
info->next = ev_list;
ev_list = info;
}
return ev_list;
}
/*
* Minor hack: generated marshalling suppressed for this command
* ('gen': false in the schema) so we can parse the JSON string
* directly into QObject instead of first parsing it with
* visit_type_SchemaInfoList() into a SchemaInfoList, then marshal it
* to QObject with generated output marshallers, every time. Instead,
* we do it in test-qmp-input-visitor.c, just to make sure
* qapi-introspect.py's output actually conforms to the schema.
*/
static void qmp_query_qmp_schema(QDict *qdict, QObject **ret_data,
Error **errp)
{
*ret_data = qobject_from_json(qmp_schema_json);
}
/*
* We used to define commands in qmp-commands.hx in addition to the
* QAPI schema. This permitted defining some of them only in certain
* configurations. query-commands has always reflected that (good,
* because it lets QMP clients figure out what's actually available),
* while query-qmp-schema never did (not so good). This function is a
* hack to keep the configuration-specific commands defined exactly as
* before, even though qmp-commands.hx is gone.
*
* FIXME Educate the QAPI schema on configuration-specific commands,
* and drop this hack.
*/
static void qmp_unregister_commands_hack(void)
{
#ifndef CONFIG_SPICE
qmp_unregister_command("query-spice");
#endif
#ifndef TARGET_I386
qmp_unregister_command("rtc-reset-reinjection");
#endif
#ifndef TARGET_S390X
qmp_unregister_command("dump-skeys");
#endif
#ifndef TARGET_ARM
qmp_unregister_command("query-gic-capabilities");
#endif
}
static void qmp_init_marshal(void)
{
qmp_register_command("query-qmp-schema", qmp_query_qmp_schema,
QCO_NO_OPTIONS);