blob: d39390c2f2f31e53bfdce71128285a8224489720 [file] [log] [blame]
/*
* 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 "qemu/units.h"
#include <dirent.h>
#include "cpu.h"
#include "hw/hw.h"
#include "monitor/qdev.h"
#include "hw/usb.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 "chardev/char-fe.h"
#include "chardev/char-io.h"
#include "chardev/char-mux.h"
#include "ui/qemu-spice.h"
#include "sysemu/numa.h"
#include "monitor/monitor.h"
#include "qemu/config-file.h"
#include "qemu/readline.h"
#include "ui/console.h"
#include "ui/input.h"
#include "sysemu/block-backend.h"
#include "audio/audio.h"
#include "disas/disas.h"
#include "sysemu/balloon.h"
#include "qemu/timer.h"
#include "sysemu/hw_accel.h"
#include "qemu/acl.h"
#include "sysemu/tpm.h"
#include "qapi/qmp/qdict.h"
#include "qapi/qmp/qerror.h"
#include "qapi/qmp/qnum.h"
#include "qapi/qmp/qstring.h"
#include "qapi/qmp/qjson.h"
#include "qapi/qmp/json-parser.h"
#include "qapi/qmp/qlist.h"
#include "qom/object_interfaces.h"
#include "trace-root.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 "qemu/option.h"
#include "hmp.h"
#include "qemu/thread.h"
#include "block/qapi.h"
#include "qapi/qapi-commands.h"
#include "qapi/qapi-events.h"
#include "qapi/error.h"
#include "qapi/qmp-event.h"
#include "qapi/qapi-introspect.h"
#include "sysemu/qtest.h"
#include "sysemu/cpus.h"
#include "sysemu/iothread.h"
#include "qemu/cutils.h"
#include "tcg/tcg.h"
#if defined(TARGET_S390X)
#include "hw/s390x/storage-keys.h"
#include "hw/s390x/storage-attributes.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;
const char *flags; /* p=preconfig */
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.
* @commands is &qmp_cap_negotiation_commands then. When command
* qmp_capabilities succeeds, we go into command mode, and
* @command becomes &qmp_commands.
*/
QmpCommandList *commands;
bool capab_offered[QMP_CAPABILITY__MAX]; /* capabilities offered */
bool capab[QMP_CAPABILITY__MAX]; /* offered and accepted */
/*
* Protects qmp request/response queue.
* Take monitor_lock first when you need both.
*/
QemuMutex qmp_queue_lock;
/* Input queue that holds all the parsed QMP requests */
GQueue *qmp_requests;
} 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 {
CharBackend chr;
int reset_seen;
int flags;
int suspend_cnt; /* Needs to be accessed atomically */
bool skip_flush;
bool use_io_thread;
/*
* State used only in the thread "owning" the monitor.
* If @use_io_thread, this is @mon_iothread.
* Else, it's the main thread.
* These members can be safely accessed without locks.
*/
ReadLineState *rs;
MonitorQMP qmp;
gchar *mon_cpu_path;
BlockCompletionFunc *password_completion_cb;
void *password_opaque;
mon_cmd_t *cmd_table;
QTAILQ_ENTRY(Monitor) entry;
/*
* The per-monitor lock. We can't access guest memory when holding
* the lock.
*/
QemuMutex mon_lock;
/*
* Members that are protected by the per-monitor lock
*/
QLIST_HEAD(, mon_fd_t) fds;
QString *outbuf;
guint out_watch;
/* Read under either BQL or mon_lock, written with BQL+mon_lock. */
int mux_out;
};
/* Shared monitor I/O thread */
IOThread *mon_iothread;
/* Bottom half to dispatch the requests received from I/O thread */
QEMUBH *qmp_dispatcher_bh;
struct QMPRequest {
/* Owner of the request */
Monitor *mon;
/* "id" field of the request */
QObject *id;
/*
* Request object to be handled or Error to be reported
* (exactly one of them is non-null)
*/
QObject *req;
Error *err;
};
typedef struct QMPRequest QMPRequest;
/* QMP checker flags */
#define QMP_ACCEPT_UNKNOWNS 1
/* Protects mon_list, monitor_qapi_event_state. */
static QemuMutex monitor_lock;
static GHashTable *monitor_qapi_event_state;
static QTAILQ_HEAD(mon_list, Monitor) mon_list;
/* Protects mon_fdsets */
static QemuMutex mon_fdsets_lock;
static QLIST_HEAD(mon_fdsets, MonFdset) mon_fdsets;
static int mon_refcount;
static mon_cmd_t mon_cmds[];
static mon_cmd_t info_cmds[];
QmpCommandList qmp_commands, qmp_cap_negotiation_commands;
__thread Monitor *cur_mon;
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 @mon is using readline?
* Note: not all HMP monitors use readline, e.g., gdbserver has a
* non-interactive HMP monitor, so readline is not used there.
*/
static inline bool monitor_uses_readline(const Monitor *mon)
{
return mon->flags & MONITOR_USE_READLINE;
}
static inline bool monitor_is_hmp_non_interactive(const Monitor *mon)
{
return !monitor_is_qmp(mon) && !monitor_uses_readline(mon);
}
/*
* Return the clock to use for recording an event's time.
* It's QEMU_CLOCK_REALTIME, except for qtests it's
* QEMU_CLOCK_VIRTUAL, to support testing rate limits.
* Beware: result is invalid before configure_accelerator().
*/
static inline QEMUClockType monitor_get_event_clock(void)
{
return qtest_enabled() ? QEMU_CLOCK_VIRTUAL : QEMU_CLOCK_REALTIME;
}
/**
* 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 qmp_request_free(QMPRequest *req)
{
qobject_unref(req->id);
qobject_unref(req->req);
error_free(req->err);
g_free(req);
}
/* Caller must hold mon->qmp.qmp_queue_lock */
static void monitor_qmp_cleanup_req_queue_locked(Monitor *mon)
{
while (!g_queue_is_empty(mon->qmp.qmp_requests)) {
qmp_request_free(g_queue_pop_head(mon->qmp.qmp_requests));
}
}
static void monitor_qmp_cleanup_queues(Monitor *mon)
{
qemu_mutex_lock(&mon->qmp.qmp_queue_lock);
monitor_qmp_cleanup_req_queue_locked(mon);
qemu_mutex_unlock(&mon->qmp.qmp_queue_lock);
}
static void monitor_flush_locked(Monitor *mon);
static gboolean monitor_unblocked(GIOChannel *chan, GIOCondition cond,
void *opaque)
{
Monitor *mon = opaque;
qemu_mutex_lock(&mon->mon_lock);
mon->out_watch = 0;
monitor_flush_locked(mon);
qemu_mutex_unlock(&mon->mon_lock);
return FALSE;
}
/* Caller must hold mon->mon_lock */
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 */
qobject_unref(mon->outbuf);
mon->outbuf = qstring_new();
return;
}
if (rc > 0) {
/* partial write */
QString *tmp = qstring_from_str(buf + rc);
qobject_unref(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->mon_lock);
monitor_flush_locked(mon);
qemu_mutex_unlock(&mon->mon_lock);
}
/* flush at every end of line */
static void monitor_puts(Monitor *mon, const char *str)
{
char c;
qemu_mutex_lock(&mon->mon_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->mon_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 qmp_send_response(Monitor *mon, const QDict *rsp)
{
const QObject *data = QOBJECT(rsp);
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));
qobject_unref(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 },
};
/*
* Broadcast an event to all monitors.
* @qdict is the event object. Its member "event" must match @event.
* Caller must hold monitor_lock.
*/
static void monitor_qapi_event_emit(QAPIEvent event, QDict *qdict)
{
Monitor *mon;
trace_monitor_protocol_event_emit(event, qdict);
QTAILQ_FOREACH(mon, &mon_list, entry) {
if (monitor_is_qmp(mon)
&& mon->qmp.commands != &qmp_cap_negotiation_commands) {
qmp_send_response(mon, 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_no_reenter(QAPIEvent event, QDict *qdict)
{
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.
*/
qobject_unref(evstate->qdict);
evstate->qdict = qobject_ref(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(monitor_get_event_clock());
monitor_qapi_event_emit(event, qdict);
evstate = g_new(MonitorQAPIEventState, 1);
evstate->event = event;
evstate->data = qobject_ref(data);
evstate->qdict = NULL;
evstate->timer = timer_new_ns(monitor_get_event_clock(),
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);
}
static void
monitor_qapi_event_queue(QAPIEvent event, QDict *qdict)
{
/*
* monitor_qapi_event_queue_no_reenter() is not reentrant: it
* would deadlock on monitor_lock. Work around by queueing
* events in thread-local storage.
* TODO: remove this, make it re-enter safe.
*/
typedef struct MonitorQapiEvent {
QAPIEvent event;
QDict *qdict;
QSIMPLEQ_ENTRY(MonitorQapiEvent) entry;
} MonitorQapiEvent;
static __thread QSIMPLEQ_HEAD(, MonitorQapiEvent) event_queue;
static __thread bool reentered;
MonitorQapiEvent *ev;
if (!reentered) {
QSIMPLEQ_INIT(&event_queue);
}
ev = g_new(MonitorQapiEvent, 1);
ev->qdict = qobject_ref(qdict);
ev->event = event;
QSIMPLEQ_INSERT_TAIL(&event_queue, ev, entry);
if (reentered) {
return;
}
reentered = true;
while ((ev = QSIMPLEQ_FIRST(&event_queue)) != NULL) {
QSIMPLEQ_REMOVE_HEAD(&event_queue, entry);
monitor_qapi_event_queue_no_reenter(ev->event, ev->qdict);
qobject_unref(ev->qdict);
g_free(ev);
}
reentered = false;
}
/*
* 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(monitor_get_event_clock());
monitor_qapi_event_emit(evstate->event, evstate->qdict);
qobject_unref(evstate->qdict);
evstate->qdict = NULL;
timer_mod_ns(evstate->timer, now + evconf->rate);
} else {
g_hash_table_remove(monitor_qapi_event_state, evstate);
qobject_unref(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)
{
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);
}
static void handle_hmp_command(Monitor *mon, const char *cmdline);
static void monitor_iothread_init(void);
static void monitor_data_init(Monitor *mon, bool skip_flush,
bool use_io_thread)
{
if (use_io_thread && !mon_iothread) {
monitor_iothread_init();
}
memset(mon, 0, sizeof(Monitor));
qemu_mutex_init(&mon->mon_lock);
qemu_mutex_init(&mon->qmp.qmp_queue_lock);
mon->outbuf = qstring_new();
/* Use *mon_cmds by default. */
mon->cmd_table = mon_cmds;
mon->skip_flush = skip_flush;
mon->use_io_thread = use_io_thread;
mon->qmp.qmp_requests = g_queue_new();
}
static void monitor_data_destroy(Monitor *mon)
{
g_free(mon->mon_cpu_path);
qemu_chr_fe_deinit(&mon->chr, false);
if (monitor_is_qmp(mon)) {
json_message_parser_destroy(&mon->qmp.parser);
}
readline_free(mon->rs);
qobject_unref(mon->outbuf);
qemu_mutex_destroy(&mon->mon_lock);
qemu_mutex_destroy(&mon->qmp.qmp_queue_lock);
monitor_qmp_cleanup_req_queue_locked(mon);
g_queue_free(mon->qmp.qmp_requests);
}
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, true, false);
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.mon_lock);
if (qstring_get_length(hmp.outbuf) > 0) {
output = g_strdup(qstring_get_str(hmp.outbuf));
} else {
output = g_strdup("");
}
qemu_mutex_unlock(&hmp.mon_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 = qemu_strchrnul(p, '|');
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;
}
/*
* Can command @cmd be executed in preconfig state?
*/
static bool cmd_can_preconfig(const mon_cmd_t *cmd)
{
if (!cmd->flags) {
return false;
}
return strchr(cmd->flags, 'p');
}
static void help_cmd_dump_one(Monitor *mon,
const mon_cmd_t *cmd,
char **prefix_args,
int prefix_args_nb)
{
int i;
if (runstate_check(RUN_STATE_PRECONFIG) && !cmd_can_preconfig(cmd)) {
return;
}
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;
size_t i;
/* 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) &&
((!runstate_check(RUN_STATE_PRECONFIG) ||
cmd_can_preconfig(cmd)))) {
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);
}
return;
}
}
/* Command not found */
monitor_printf(mon, "unknown command: '");
for (i = 0; i <= arg_index; i++) {
monitor_printf(mon, "%s%s", args[i], i == arg_index ? "'\n" : " ");
}
}
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(cur_mon->qmp.commands, 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_str(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-qobject-input-visitor.c, just to make sure
* qapi-gen.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_qlit(&qmp_schema_qlit);
}
/*
* 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_REPLICATION
qmp_unregister_command(&qmp_commands, "xen-set-replication");
qmp_unregister_command(&qmp_commands, "query-xen-replication-status");
qmp_unregister_command(&qmp_commands, "xen-colo-do-checkpoint");
#endif
#ifndef TARGET_I386
qmp_unregister_command(&qmp_commands, "rtc-reset-reinjection");
qmp_unregister_command(&qmp_commands, "query-sev");
qmp_unregister_command(&qmp_commands, "query-sev-launch-measure");
qmp_unregister_command(&qmp_commands, "query-sev-capabilities");
#endif
#ifndef TARGET_S390X
qmp_unregister_command(&qmp_commands, "dump-skeys");
#endif
#ifndef TARGET_ARM
qmp_unregister_command(&qmp_commands, "query-gic-capabilities");
#endif
#if !defined(TARGET_S390X) && !defined(TARGET_I386)
qmp_unregister_command(&qmp_commands, "query-cpu-model-expansion");
#endif
#if !defined(TARGET_S390X)
qmp_unregister_command(&qmp_commands, "query-cpu-model-baseline");
qmp_unregister_command(&qmp_commands, "query-cpu-model-comparison");
#endif
#if !defined(TARGET_PPC) && !defined(TARGET_ARM) && !defined(TARGET_I386) \
&& !defined(TARGET_S390X)
qmp_unregister_command(&qmp_commands, "query-cpu-definitions");
#endif
}
static void monitor_init_qmp_commands(void)
{
/*
* Two command lists:
* - qmp_commands contains all QMP commands
* - qmp_cap_negotiation_commands contains just
* "qmp_capabilities", to enforce capability negotiation
*/
qmp_init_marshal(&qmp_commands);
qmp_register_command(&qmp_commands, "query-qmp-schema",
qmp_query_qmp_schema, QCO_ALLOW_PRECONFIG);
qmp_register_command(&qmp_commands, "device_add", qmp_device_add,
QCO_NO_OPTIONS);
qmp_register_command(&qmp_commands, "netdev_add", qmp_netdev_add,
QCO_NO_OPTIONS);
qmp_unregister_commands_hack();
QTAILQ_INIT(&qmp_cap_negotiation_commands);
qmp_register_command(&qmp_cap_negotiation_commands, "qmp_capabilities",
qmp_marshal_qmp_capabilities, QCO_ALLOW_PRECONFIG);
}
static bool qmp_oob_enabled(Monitor *mon)
{
return mon->qmp.capab[QMP_CAPABILITY_OOB];
}
static void monitor_qmp_caps_reset(Monitor *mon)
{
memset(mon->qmp.capab_offered, 0, sizeof(mon->qmp.capab_offered));
memset(mon->qmp.capab, 0, sizeof(mon->qmp.capab));
mon->qmp.capab_offered[QMP_CAPABILITY_OOB] = mon->use_io_thread;
}
/*
* Accept QMP capabilities in @list for @mon.
* On success, set mon->qmp.capab[], and return true.
* On error, set @errp, and return false.
*/
static bool qmp_caps_accept(Monitor *mon, QMPCapabilityList *list,
Error **errp)
{
GString *unavailable = NULL;
bool capab[QMP_CAPABILITY__MAX];
memset(capab, 0, sizeof(capab));
for (; list; list = list->next) {
if (!mon->qmp.capab_offered[list->value]) {
if (!unavailable) {
unavailable = g_string_new(QMPCapability_str(list->value));
} else {
g_string_append_printf(unavailable, ", %s",
QMPCapability_str(list->value));
}
}
capab[list->value] = true;
}
if (unavailable) {
error_setg(errp, "Capability %s not available", unavailable->str);
g_string_free(unavailable, true);
return false;
}
memcpy(mon->qmp.capab, capab, sizeof(capab));
return true;
}
void qmp_qmp_capabilities(bool has_enable, QMPCapabilityList *enable,
Error **errp)
{
if (cur_mon->qmp.commands == &qmp_commands) {
error_set(errp, ERROR_CLASS_COMMAND_NOT_FOUND,
"Capabilities negotiation is already complete, command "
"ignored");
return;
}
if (!qmp_caps_accept(cur_mon, enable, errp)) {
return;
}
cur_mon->qmp.commands = &qmp_commands;
}
/* Set the current CPU defined by the user. Callers must hold BQL. */
int monitor_set_cpu(int cpu_index)
{
CPUState *cpu;
cpu = qemu_get_cpu(cpu_index);
if (cpu == NULL) {
return -1;
}
g_free(cur_mon->mon_cpu_path);
cur_mon->mon_cpu_path = object_get_canonical_path(OBJECT(cpu));
return 0;
}
/* Callers must hold BQL. */
static CPUState *mon_get_cpu_sync(bool synchronize)
{
CPUState *cpu;
if (cur_mon->mon_cpu_path) {
cpu = (CPUState *) object_resolve_path_type(cur_mon->mon_cpu_path,
TYPE_CPU, NULL);
if (!cpu) {
g_free(cur_mon->mon_cpu_path);
cur_mon->mon_cpu_path = NULL;
}
}
if (!cur_mon->mon_cpu_path) {
if (!first_cpu) {
return NULL;
}
monitor_set_cpu(first_cpu->cpu_index);
cpu = first_cpu;
}
if (synchronize) {
cpu_synchronize_state(cpu);
}
return cpu;
}
CPUState *mon_get_cpu(void)
{
return mon_get_cpu_sync(true);
}
CPUArchState *mon_get_cpu_env(void)
{
CPUState *cs = mon_get_cpu();
return cs ? cs->env_ptr : NULL;
}
int monitor_get_cpu_index(void)
{
CPUState *cs = mon_get_cpu_sync(false);
return cs ? cs->cpu_index : UNASSIGNED_CPU_INDEX;
}
static void hmp_info_registers(Monitor *mon, const QDict *qdict)
{
bool all_cpus = qdict_get_try_bool(qdict, "cpustate_all", false);
CPUState *cs;
if (all_cpus) {
CPU_FOREACH(cs) {
monitor_printf(mon, "\nCPU#%d\n", cs->cpu_index);
cpu_dump_state(cs, (FILE *)mon, monitor_fprintf, CPU_DUMP_FPU);
}
} else {
cs = mon_get_cpu();
if (!cs) {
monitor_printf(mon, "No CPU available\n");
return;
}
cpu_dump_state(cs, (FILE *)mon, monitor_fprintf, CPU_DUMP_FPU);
}
}
#ifdef CONFIG_TCG
static void hmp_info_jit(Monitor *mon, const QDict *qdict)
{
if (!tcg_enabled()) {
error_report("JIT information is only available with accel=tcg");
return;
}
dump_exec_info((FILE *)mon, monitor_fprintf);
dump_drift_info((FILE *)mon, monitor_fprintf);
}
static void hmp_info_opcount(Monitor *mon, const QDict *qdict)
{
dump_opcount_info((FILE *)mon, monitor_fprintf);
}
#endif
static void hmp_info_sync_profile(Monitor *mon, const QDict *qdict)
{
int64_t max = qdict_get_try_int(qdict, "max", 10);
bool mean = qdict_get_try_bool(qdict, "mean", false);
bool coalesce = !qdict_get_try_bool(qdict, "no_coalesce", false);
enum QSPSortBy sort_by;
sort_by = mean ? QSP_SORT_BY_AVG_WAIT_TIME : QSP_SORT_BY_TOTAL_WAIT_TIME;
qsp_report((FILE *)mon, monitor_fprintf, max, sort_by, coalesce);
}
static void hmp_info_history(Monitor *mon, const QDict *qdict)
{
int i;
const char *str;
if (!mon->rs)
return;
i = 0;
for(;;) {
str = readline_get_history(mon->rs, i);
if (!str)
break;
monitor_printf(mon, "%d: '%s'\n", i, str);
i++;
}
}
static void hmp_info_cpustats(Monitor *mon, const QDict *qdict)
{
CPUState *cs = mon_get_cpu();
if (!cs) {
monitor_printf(mon, "No CPU available\n");
return;
}
cpu_dump_statistics(cs, (FILE *)mon, &monitor_fprintf, 0);
}
static void hmp_info_trace_events(Monitor *mon, const QDict *qdict)
{
const char *name = qdict_get_try_str(qdict, "name");
bool has_vcpu = qdict_haskey(qdict, "vcpu");
int vcpu = qdict_get_try_int(qdict, "vcpu", 0);
TraceEventInfoList *events;
TraceEventInfoList *elem;
Error *local_err = NULL;
if (name == NULL) {
name = "*";
}
if (vcpu < 0) {
monitor_printf(mon, "argument vcpu must be positive");
return;
}
events = qmp_trace_event_get_state(name, has_vcpu, vcpu, &local_err);
if (local_err) {
error_report_err(local_err);
return;
}
for (elem = events; elem != NULL; elem = elem->next) {
monitor_printf(mon, "%s : state %u\n",
elem->value->name,
elem->value->state == TRACE_EVENT_STATE_ENABLED ? 1 : 0);
}
qapi_free_TraceEventInfoList(events);
}
void qmp_client_migrate_info(const char *protocol, const char *hostname,
bool has_port, int64_t port,
bool has_tls_port, int64_t tls_port,
bool has_cert_subject, const char *cert_subject,
Error **errp)
{
if (strcmp(protocol, "spice") == 0) {
if (!qemu_using_spice(errp)) {
return;
}
if (!has_port && !has_tls_port) {
error_setg(errp, QERR_MISSING_PARAMETER, "port/tls-port");
return;
}
if (qemu_spice_migrate_info(hostname,
has_port ? port : -1,
has_tls_port ? tls_port : -1,
cert_subject)) {
error_setg(errp, QERR_UNDEFINED_ERROR);
return;
}
return;
}
error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "protocol", "spice");
}
static void hmp_logfile(Monitor *mon, const QDict *qdict)
{
Error *err = NULL;
qemu_set_log_filename(qdict_get_str(qdict, "filename"), &err);
if (err) {
error_report_err(err);
}
}
static void hmp_log(Monitor *mon, const QDict *qdict)
{
int mask;
const char *items = qdict_get_str(qdict, "items");
if (!strcmp(items, "none")) {
mask = 0;
} else {
mask = qemu_str_to_log_mask(items);
if (!mask) {
help_cmd(mon, "log");
return;
}
}
qemu_set_log(mask);
}
static void hmp_singlestep(Monitor *mon, const QDict *qdict)
{
const char *option = qdict_get_try_str(qdict, "option");
if (!option || !strcmp(option, "on")) {
singlestep = 1;
} else if (!strcmp(option, "off")) {
singlestep = 0;
} else {
monitor_printf(mon, "unexpected option %s\n", option);
}
}
static void hmp_gdbserver(Monitor *mon, const QDict *qdict)
{
const char *device = qdict_get_try_str(qdict, "device");
if (!device)
device = "tcp::" DEFAULT_GDBSTUB_PORT;
if (gdbserver_start(device) < 0) {
monitor_printf(mon, "Could not open gdbserver on device '%s'\n",
device);
} else if (strcmp(device, "none") == 0) {
monitor_printf(mon, "Disabled gdbserver\n");
} else {
monitor_printf(mon, "Waiting for gdb connection on device '%s'\n",
device);
}
}
static void hmp_watchdog_action(Monitor *mon, const QDict *qdict)
{
const char *action = qdict_get_str(qdict, "action");
if (select_watchdog_action(action) == -1) {
monitor_printf(mon, "Unknown watchdog action '%s'\n", action);
}
}
static void monitor_printc(Monitor *mon, int c)
{
monitor_printf(mon, "'");
switch(c) {
case '\'':
monitor_printf(mon, "\\'");
break;
case '\\':
monitor_printf(mon, "\\\\");
break;
case '\n':
monitor_printf(mon, "\\n");
break;
case '\r':
monitor_printf(mon, "\\r");
break;
default:
if (c >= 32 && c <= 126) {
monitor_printf(mon, "%c", c);
} else {
monitor_printf(mon, "\\x%02x", c);
}
break;
}
monitor_printf(mon, "'");
}
static void memory_dump(Monitor *mon, int count, int format, int wsize,
hwaddr addr, int is_physical)
{
int l, line_size, i, max_digits, len;
uint8_t buf[16];
uint64_t v;
CPUState *cs = mon_get_cpu();
if (!cs && (format == 'i' || !is_physical)) {
monitor_printf(mon, "Can not dump without CPU\n");
return;
}
if (format == 'i') {
monitor_disas(mon, cs, addr, count, is_physical);
return;
}
len = wsize * count;
if (wsize == 1)
line_size = 8;
else
line_size = 16;
max_digits = 0;
switch(format) {
case 'o':
max_digits = DIV_ROUND_UP(wsize * 8, 3);
break;
default:
case 'x':
max_digits = (wsize * 8) / 4;
break;
case 'u':
case 'd':
max_digits = DIV_ROUND_UP(wsize * 8 * 10, 33);
break;
case 'c':
wsize = 1;
break;
}
while (len > 0) {
if (is_physical)
monitor_printf(mon, TARGET_FMT_plx ":", addr);
else
monitor_printf(mon, TARGET_FMT_lx ":", (target_ulong)addr);
l = len;
if (l > line_size)
l = line_size;
if (is_physical) {
cpu_physical_memory_read(addr, buf, l);
} else {
if (cpu_memory_rw_debug(cs, addr, buf, l, 0) < 0) {
monitor_printf(mon, " Cannot access memory\n");
break;
}
}
i = 0;
while (i < l) {
switch(wsize) {
default:
case 1:
v = ldub_p(buf + i);
break;
case 2:
v = lduw_p(buf + i);
break;
case 4:
v = (uint32_t)ldl_p(buf + i);
break;
case 8:
v = ldq_p(buf + i);
break;
}
monitor_printf(mon, " ");
switch(format) {
case 'o':
monitor_printf(mon, "%#*" PRIo64, max_digits, v);
break;
case 'x':
monitor_printf(mon, "0x%0*" PRIx64, max_digits, v);
break;
case 'u':
monitor_printf(mon, "%*" PRIu64, max_digits, v);
break;
case 'd':
monitor_printf(mon, "%*" PRId64, max_digits, v);
break;
case 'c':
monitor_printc(mon, v);
break;
}
i += wsize;
}
monitor_printf(mon, "\n");
addr += l;
len -= l;
}
}
static void hmp_memory_dump(Monitor *mon, const QDict *qdict)
{
int count = qdict_get_int(qdict, "count");
int format = qdict_get_int(qdict, "format");
int size = qdict_get_int(qdict, "size");
target_long addr = qdict_get_int(qdict, "addr");
memory_dump(mon, count, format, size, addr, 0);
}
static void hmp_physical_memory_dump(Monitor *mon, const QDict *qdict)
{
int count = qdict_get_int(qdict, "count");
int format = qdict_get_int(qdict, "format");
int size = qdict_get_int(qdict, "size");
hwaddr addr = qdict_get_int(qdict, "addr");
memory_dump(mon, count, format, size, addr, 1);
}
static void *gpa2hva(MemoryRegion **p_mr, hwaddr addr, Error **errp)
{
MemoryRegionSection mrs = memory_region_find(get_system_memory(),
addr, 1);
if (!mrs.mr) {
error_setg(errp, "No memory is mapped at address 0x%" HWADDR_PRIx, addr);
return NULL;
}
if (!memory_region_is_ram(mrs.mr) && !memory_region_is_romd(mrs.mr)) {
error_setg(errp, "Memory at address 0x%" HWADDR_PRIx "is not RAM", addr);
memory_region_unref(mrs.mr);
return NULL;
}
*p_mr = mrs.mr;
return qemu_map_ram_ptr(mrs.mr->ram_block, mrs.offset_within_region);
}
static void hmp_gpa2hva(Monitor *mon, const QDict *qdict)
{
hwaddr addr = qdict_get_int(qdict, "addr");
Error *local_err = NULL;
MemoryRegion *mr = NULL;
void *ptr;
ptr = gpa2hva(&mr, addr, &local_err);
if (local_err) {
error_report_err(local_err);
return;
}
monitor_printf(mon, "Host virtual address for 0x%" HWADDR_PRIx
" (%s) is %p\n",
addr, mr->name, ptr);
memory_region_unref(mr);
}
#ifdef CONFIG_LINUX
static uint64_t vtop(void *ptr, Error **errp)
{
uint64_t pinfo;
uint64_t ret = -1;
uintptr_t addr = (uintptr_t) ptr;
uintptr_t pagesize = getpagesize();
off_t offset = addr / pagesize * sizeof(pinfo);
int fd;
fd = open("/proc/self/pagemap", O_RDONLY);
if (fd == -1) {
error_setg_errno(errp, errno, "Cannot open /proc/self/pagemap");
return -1;
}
/* Force copy-on-write if necessary. */
atomic_add((uint8_t *)ptr, 0);
if (pread(fd, &pinfo, sizeof(pinfo), offset) != sizeof(pinfo)) {
error_setg_errno(errp, errno, "Cannot read pagemap");
goto out;
}
if ((pinfo & (1ull << 63)) == 0) {
error_setg(errp, "Page not present");
goto out;
}
ret = ((pinfo & 0x007fffffffffffffull) * pagesize) | (addr & (pagesize - 1));
out:
close(fd);
return ret;
}
static void hmp_gpa2hpa(Monitor *mon, const QDict *qdict)
{
hwaddr addr = qdict_get_int(qdict, "addr");
Error *local_err = NULL;
MemoryRegion *mr = NULL;
void *ptr;
uint64_t physaddr;
ptr = gpa2hva(&mr, addr, &local_err);
if (local_err) {
error_report_err(local_err);
return;
}
physaddr = vtop(ptr, &local_err);
if (local_err) {
error_report_err(local_err);
} else {
monitor_printf(mon, "Host physical address for 0x%" HWADDR_PRIx
" (%s) is 0x%" PRIx64 "\n",
addr, mr->name, (uint64_t) physaddr);
}
memory_region_unref(mr);
}
#endif
static void do_print(Monitor *mon, const QDict *qdict)
{
int format = qdict_get_int(qdict, "format");
hwaddr val = qdict_get_int(qdict, "val");
switch(format) {
case 'o':
monitor_printf(mon, "%#" HWADDR_PRIo, val);
break;
case 'x':
monitor_printf(mon, "%#" HWADDR_PRIx, val);
break;
case 'u':
monitor_printf(mon, "%" HWADDR_PRIu, val);
break;
default:
case 'd':
monitor_printf(mon, "%" HWADDR_PRId, val);
break;
case 'c':
monitor_printc(mon, val);
break;
}
monitor_printf(mon, "\n");
}
static void hmp_sum(Monitor *mon, const QDict *qdict)
{
uint32_t addr;
uint16_t sum;
uint32_t start = qdict_get_int(qdict, "start");
uint32_t size = qdict_get_int(qdict, "size");
sum = 0;
for(addr = start; addr < (start + size); addr++) {
uint8_t val = address_space_ldub(&address_space_memory, addr,
MEMTXATTRS_UNSPECIFIED, NULL);
/* BSD sum algorithm ('sum' Unix command) */
sum = (sum >> 1) | (sum << 15);
sum += val;
}
monitor_printf(mon, "%05d\n", sum);
}
static int mouse_button_state;
static void hmp_mouse_move(Monitor *mon, const QDict *qdict)
{
int dx, dy, dz, button;
const char *dx_str = qdict_get_str(qdict, "dx_str");
const char *dy_str = qdict_get_str(qdict, "dy_str");
const char *dz_str = qdict_get_try_str(qdict, "dz_str");
dx = strtol(dx_str, NULL, 0);
dy = strtol(dy_str, NULL, 0);
qemu_input_queue_rel(NULL, INPUT_AXIS_X, dx);
qemu_input_queue_rel(NULL, INPUT_AXIS_Y, dy);
if (dz_str) {
dz = strtol(dz_str, NULL, 0);
if (dz != 0) {
button = (dz > 0) ? INPUT_BUTTON_WHEEL_UP : INPUT_BUTTON_WHEEL_DOWN;
qemu_input_queue_btn(NULL, button, true);
qemu_input_event_sync();
qemu_input_queue_btn(NULL, button, false);
}
}
qemu_input_event_sync();
}
static void hmp_mouse_button(Monitor *mon, const QDict *qdict)
{
static uint32_t bmap[INPUT_BUTTON__MAX] = {
[INPUT_BUTTON_LEFT] = MOUSE_EVENT_LBUTTON,
[INPUT_BUTTON_MIDDLE] = MOUSE_EVENT_MBUTTON,
[INPUT_BUTTON_RIGHT] = MOUSE_EVENT_RBUTTON,
};
int button_state = qdict_get_int(qdict, "button_state");
if (mouse_button_state == button_state) {
return;
}
qemu_input_update_buttons(NULL, bmap, mouse_button_state, button_state);
qemu_input_event_sync();
mouse_button_state = button_state;
}
static void hmp_ioport_read(Monitor *mon, const QDict *qdict)
{
int size = qdict_get_int(qdict, "size");
int addr = qdict_get_int(qdict, "addr");
int has_index = qdict_haskey(qdict, "index");
uint32_t val;
int suffix;
if (has_index) {
int index = qdict_get_int(qdict, "index");
cpu_outb(addr & IOPORTS_MASK, index & 0xff);
addr++;
}
addr &= 0xffff;
switch(size) {
default:
case 1:
val = cpu_inb(addr);
suffix = 'b';
break;
case 2:
val = cpu_inw(addr);
suffix = 'w';
break;
case 4:
val = cpu_inl(addr);
suffix = 'l';
break;
}
monitor_printf(mon, "port%c[0x%04x] = %#0*x\n",
suffix, addr, size * 2, val);
}
static void hmp_ioport_write(Monitor *mon, const QDict *qdict)
{
int size = qdict_get_int(qdict, "size");
int addr = qdict_get_int(qdict, "addr");
int val = qdict_get_int(qdict, "val");
addr &= IOPORTS_MASK;
switch (size) {
default:
case 1:
cpu_outb(addr, val);
break;
case 2:
cpu_outw(addr, val);
break;
case 4:
cpu_outl(addr, val);
break;
}
}
static void hmp_boot_set(Monitor *mon, const QDict *qdict)
{
Error *local_err = NULL;
const char *bootdevice = qdict_get_str(qdict, "bootdevice");
qemu_boot_set(bootdevice, &local_err);
if (local_err) {
error_report_err(local_err);
} else {
monitor_printf(mon, "boot device list now set to %s\n", bootdevice);
}
}
static void hmp_info_mtree(Monitor *mon, const QDict *qdict)
{
bool flatview = qdict_get_try_bool(qdict, "flatview", false);
bool dispatch_tree = qdict_get_try_bool(qdict, "dispatch_tree", false);
bool owner = qdict_get_try_bool(qdict, "owner", false);
mtree_info((fprintf_function)monitor_printf, mon, flatview, dispatch_tree,
owner);
}
static void hmp_info_numa(Monitor *mon, const QDict *qdict)
{
int i;
NumaNodeMem *node_mem;
CpuInfoList *cpu_list, *cpu;
cpu_list = qmp_query_cpus(&error_abort);
node_mem = g_new0(NumaNodeMem, nb_numa_nodes);
query_numa_node_mem(node_mem);
monitor_printf(mon, "%d nodes\n", nb_numa_nodes);
for (i = 0; i < nb_numa_nodes; i++) {
monitor_printf(mon, "node %d cpus:", i);
for (cpu = cpu_list; cpu; cpu = cpu->next) {
if (cpu->value->has_props && cpu->value->props->has_node_id &&
cpu->value->props->node_id == i) {
monitor_printf(mon, " %" PRIi64, cpu->value->CPU);
}
}
monitor_printf(mon, "\n");
monitor_printf(mon, "node %d size: %" PRId64 " MB\n", i,
node_mem[i].node_mem >> 20);
monitor_printf(mon, "node %d plugged: %" PRId64 " MB\n", i,
node_mem[i].node_plugged_mem >> 20);
}
qapi_free_CpuInfoList(cpu_list);
g_free(node_mem);
}
#ifdef CONFIG_PROFILER
int64_t dev_time;
static void hmp_info_profile(Monitor *mon, const QDict *qdict)
{
static int64_t last_cpu_exec_time;
int64_t cpu_exec_time;
int64_t delta;
cpu_exec_time = tcg_cpu_exec_time();
delta = cpu_exec_time - last_cpu_exec_time;
monitor_printf(mon, "async time %" PRId64 " (%0.3f)\n",
dev_time, dev_time / (double)NANOSECONDS_PER_SECOND);
monitor_printf(mon, "qemu time %" PRId64 " (%0.3f)\n",
delta, delta / (double)NANOSECONDS_PER_SECOND);
last_cpu_exec_time = cpu_exec_time;
dev_time = 0;
}
#else
static void hmp_info_profile(Monitor *mon, const QDict *qdict)
{
monitor_printf(mon, "Internal profiler not compiled\n");
}
#endif
/* Capture support */
static QLIST_HEAD (capture_list_head, CaptureState) capture_head;
static void hmp_info_capture(Monitor *mon, const QDict *qdict)
{
int i;
CaptureState *s;
for (s = capture_head.lh_first, i = 0; s; s = s->entries.le_next, ++i) {
monitor_printf(mon, "[%d]: ", i);
s->ops.info (s->opaque);
}
}
static void hmp_stopcapture(Monitor *mon, const QDict *qdict)
{
int i;
int n = qdict_get_int(qdict, "n");
CaptureState *s;
for (s = capture_head.lh_first, i = 0; s; s = s->entries.le_next, ++i) {
if (i == n) {
s->ops.destroy (s->opaque);
QLIST_REMOVE (s, entries);
g_free (s);
return;
}
}
}
static void hmp_wavcapture(Monitor *mon, const QDict *qdict)
{
const char *path = qdict_get_str(qdict, "path");
int has_freq = qdict_haskey(qdict, "freq");
int freq = qdict_get_try_int(qdict, "freq", -1);
int has_bits = qdict_haskey(qdict, "bits");
int bits = qdict_get_try_int(qdict, "bits", -1);
int has_channels = qdict_haskey(qdict, "nchannels");
int nchannels = qdict_get_try_int(qdict, "nchannels", -1);
CaptureState *s;
s = g_malloc0 (sizeof (*s));
freq = has_freq ? freq : 44100;
bits = has_bits ? bits : 16;
nchannels = has_channels ? nchannels : 2;
if (wav_start_capture (s, path, freq, bits, nchannels)) {
monitor_printf(mon, "Failed to add wave capture\n");
g_free (s);
return;
}
QLIST_INSERT_HEAD (&capture_head, s, entries);
}
static qemu_acl *find_acl(Monitor *mon, const char *name)
{
qemu_acl *acl = qemu_acl_find(name);
if (!acl) {
monitor_printf(mon, "acl: unknown list '%s'\n", name);
}
return acl;
}
static void hmp_acl_show(Monitor *mon, const QDict *qdict)
{
const char *aclname = qdict_get_str(qdict, "aclname");
qemu_acl *acl = find_acl(mon, aclname);
qemu_acl_entry *entry;
int i = 0;
if (acl) {
monitor_printf(mon, "policy: %s\n",
acl->defaultDeny ? "deny" : "allow");
QTAILQ_FOREACH(entry, &acl->entries, next) {
i++;
monitor_printf(mon, "%d: %s %s\n", i,
entry->deny ? "deny" : "allow", entry->match);
}
}
}
static void hmp_acl_reset(Monitor *mon, const QDict *qdict)
{
const char *aclname = qdict_get_str(qdict, "aclname");
qemu_acl *acl = find_acl(mon, aclname);
if (acl) {
qemu_acl_reset(acl);
monitor_printf(mon, "acl: removed all rules\n");
}
}
static void hmp_acl_policy(Monitor *mon, const QDict *qdict)
{
const char *aclname = qdict_get_str(qdict, "aclname");
const char *policy = qdict_get_str(qdict, "policy");
qemu_acl *acl = find_acl(mon, aclname);
if (acl) {
if (strcmp(policy, "allow") == 0) {
acl->defaultDeny = 0;
monitor_printf(mon, "acl: policy set to 'allow'\n");
} else if (strcmp(policy, "deny") == 0) {
acl->defaultDeny = 1;
monitor_printf(mon, "acl: policy set to 'deny'\n");
} else {
monitor_printf(mon, "acl: unknown policy '%s', "
"expected 'deny' or 'allow'\n", policy);
}
}
}
static void hmp_acl_add(Monitor *mon, const QDict *qdict)
{
const char *aclname = qdict_get_str(qdict, "aclname");
const char *match = qdict_get_str(qdict, "match");
const char *policy = qdict_get_str(qdict, "policy");
int has_index = qdict_haskey(qdict, "index");
int index = qdict_get_try_int(qdict, "index", -1);
qemu_acl *acl = find_acl(mon, aclname);
int deny, ret;
if (acl) {
if (strcmp(policy, "allow") == 0) {
deny = 0;
} else if (strcmp(policy, "deny") == 0) {
deny = 1;
} else {
monitor_printf(mon, "acl: unknown policy '%s', "
"expected 'deny' or 'allow'\n", policy);
return;
}
if (has_index)
ret = qemu_acl_insert(acl, deny, match, index);
else
ret = qemu_acl_append(acl, deny, match);
if (ret < 0)
monitor_printf(mon, "acl: unable to add acl entry\n");
else
monitor_printf(mon, "acl: added rule at position %d\n", ret);
}
}
static void hmp_acl_remove(Monitor *mon, const QDict *qdict)
{
const char *aclname = qdict_get_str(qdict, "aclname");
const char *match = qdict_get_str(qdict, "match");
qemu_acl *acl = find_acl(mon, aclname);
int ret;
if (acl) {
ret = qemu_acl_remove(acl, match);
if (ret < 0)
monitor_printf(mon, "acl: no matching acl entry\n");
else
monitor_printf(mon, "acl: removed rule at position %d\n", ret);
}
}
void qmp_getfd(const char *fdname, Error **errp)
{
mon_fd_t *monfd;
int fd, tmp_fd;
fd = qemu_chr_fe_get_msgfd(&cur_mon->chr);
if (fd == -1) {
error_setg(errp, QERR_FD_NOT_SUPPLIED);
return;
}
if (qemu_isdigit(fdname[0])) {
close(fd);
error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "fdname",
"a name not starting with a digit");
return;
}
qemu_mutex_lock(&cur_mon->mon_lock);
QLIST_FOREACH(monfd, &cur_mon->fds, next) {
if (strcmp(monfd->name, fdname) != 0) {
continue;
}
tmp_fd = monfd->fd;
monfd->fd = fd;
qemu_mutex_unlock(&cur_mon->mon_lock);
/* Make sure close() is outside critical section */
close(tmp_fd);
return;
}
monfd = g_malloc0(sizeof(mon_fd_t));
monfd->name = g_strdup(fdname);
monfd->fd = fd;
QLIST_INSERT_HEAD(&cur_mon->fds, monfd, next);
qemu_mutex_unlock(&cur_mon->mon_lock);
}
void qmp_closefd(const char *fdname, Error **errp)
{
mon_fd_t *monfd;
int tmp_fd;
qemu_mutex_lock(&cur_mon->mon_lock);
QLIST_FOREACH(monfd, &cur_mon->fds, next) {
if (strcmp(monfd->name, fdname) != 0) {
continue;
}
QLIST_REMOVE(monfd, next);
tmp_fd = monfd->fd;
g_free(monfd->name);
g_free(monfd);
qemu_mutex_unlock(&cur_mon->mon_lock);
/* Make sure close() is outside critical section */
close(tmp_fd);
return;
}
qemu_mutex_unlock(&cur_mon->mon_lock);
error_setg(errp, QERR_FD_NOT_FOUND, fdname);
}
int monitor_get_fd(Monitor *mon, const char *fdname, Error **errp)
{
mon_fd_t *monfd;
qemu_mutex_lock(&mon->mon_lock);
QLIST_FOREACH(monfd, &mon->fds, next) {
int fd;
if (strcmp(monfd->name, fdname) != 0) {
continue;
}
fd = monfd->fd;
/* caller takes ownership of fd */
QLIST_REMOVE(monfd, next);
g_free(monfd->name);
g_free(monfd);
qemu_mutex_unlock(&mon->mon_lock);
return fd;
}
qemu_mutex_unlock(&mon->mon_lock);
error_setg(errp, "File descriptor named '%s' has not been found", fdname);
return -1;
}
static void monitor_fdset_cleanup(MonFdset *mon_fdset)
{
MonFdsetFd *mon_fdset_fd;
MonFdsetFd *mon_fdset_fd_next;
QLIST_FOREACH_SAFE(mon_fdset_fd, &mon_fdset->fds, next, mon_fdset_fd_next) {
if ((mon_fdset_fd->removed ||
(QLIST_EMPTY(&mon_fdset->dup_fds) && mon_refcount == 0)) &&
runstate_is_running()) {
close(mon_fdset_fd->fd);
g_free(mon_fdset_fd->opaque);
QLIST_REMOVE(mon_fdset_fd, next);
g_free(mon_fdset_fd);
}
}
if (QLIST_EMPTY(&mon_fdset->fds) && QLIST_EMPTY(&mon_fdset->dup_fds)) {
QLIST_REMOVE(mon_fdset, next);
g_free(mon_fdset);
}
}
static void monitor_fdsets_cleanup(void)
{
MonFdset *mon_fdset;
MonFdset *mon_fdset_next;
qemu_mutex_lock(&mon_fdsets_lock);
QLIST_FOREACH_SAFE(mon_fdset, &mon_fdsets, next, mon_fdset_next) {
monitor_fdset_cleanup(mon_fdset);
}
qemu_mutex_unlock(&mon_fdsets_lock);
}
AddfdInfo *qmp_add_fd(bool has_fdset_id, int64_t fdset_id, bool has_opaque,
const char *opaque, Error **errp)
{
int fd;
Monitor *mon = cur_mon;
AddfdInfo *fdinfo;
fd = qemu_chr_fe_get_msgfd(&mon->chr);
if (fd == -1) {
error_setg(errp, QERR_FD_NOT_SUPPLIED);
goto error;
}
fdinfo = monitor_fdset_add_fd(fd, has_fdset_id, fdset_id,
has_opaque, opaque, errp);
if (fdinfo) {
return fdinfo;
}
error:
if (fd != -1) {
close(fd);
}
return NULL;
}
void qmp_remove_fd(int64_t fdset_id, bool has_fd, int64_t fd, Error **errp)
{
MonFdset *mon_fdset;
MonFdsetFd *mon_fdset_fd;
char fd_str[60];
qemu_mutex_lock(&mon_fdsets_lock);
QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
if (mon_fdset->id != fdset_id) {
continue;
}
QLIST_FOREACH(mon_fdset_fd, &mon_fdset->fds, next) {
if (has_fd) {
if (mon_fdset_fd->fd != fd) {
continue;
}
mon_fdset_fd->removed = true;
break;
} else {
mon_fdset_fd->removed = true;
}
}
if (has_fd && !mon_fdset_fd) {
goto error;
}
monitor_fdset_cleanup(mon_fdset);
qemu_mutex_unlock(&mon_fdsets_lock);
return;
}
error:
qemu_mutex_unlock(&mon_fdsets_lock);
if (has_fd) {
snprintf(fd_str, sizeof(fd_str), "fdset-id:%" PRId64 ", fd:%" PRId64,
fdset_id, fd);
} else {
snprintf(fd_str, sizeof(fd_str), "fdset-id:%" PRId64, fdset_id);
}
error_setg(errp, QERR_FD_NOT_FOUND, fd_str);
}
FdsetInfoList *qmp_query_fdsets(Error **errp)
{
MonFdset *mon_fdset;
MonFdsetFd *mon_fdset_fd;
FdsetInfoList *fdset_list = NULL;
qemu_mutex_lock(&mon_fdsets_lock);
QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
FdsetInfoList *fdset_info = g_malloc0(sizeof(*fdset_info));
FdsetFdInfoList *fdsetfd_list = NULL;
fdset_info->value = g_malloc0(sizeof(*fdset_info->value));
fdset_info->value->fdset_id = mon_fdset->id;
QLIST_FOREACH(mon_fdset_fd, &mon_fdset->fds, next) {
FdsetFdInfoList *fdsetfd_info;
fdsetfd_info = g_malloc0(sizeof(*fdsetfd_info));
fdsetfd_info->value = g_malloc0(sizeof(*fdsetfd_info->value));
fdsetfd_info->value->fd = mon_fdset_fd->fd;
if (mon_fdset_fd->opaque) {
fdsetfd_info->value->has_opaque = true;
fdsetfd_info->value->opaque = g_strdup(mon_fdset_fd->opaque);
} else {
fdsetfd_info->value->has_opaque = false;
}
fdsetfd_info->next = fdsetfd_list;
fdsetfd_list = fdsetfd_info;
}
fdset_info->value->fds = fdsetfd_list;
fdset_info->next = fdset_list;
fdset_list = fdset_info;
}
qemu_mutex_unlock(&mon_fdsets_lock);
return fdset_list;
}
AddfdInfo *monitor_fdset_add_fd(int fd, bool has_fdset_id, int64_t fdset_id,
bool has_opaque, const char *opaque,
Error **errp)
{
MonFdset *mon_fdset = NULL;
MonFdsetFd *mon_fdset_fd;
AddfdInfo *fdinfo;
qemu_mutex_lock(&mon_fdsets_lock);
if (has_fdset_id) {
QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
/* Break if match found or match impossible due to ordering by ID */
if (fdset_id <= mon_fdset->id) {
if (fdset_id < mon_fdset->id) {
mon_fdset = NULL;
}
break;
}
}
}
if (mon_fdset == NULL) {
int64_t fdset_id_prev = -1;
MonFdset *mon_fdset_cur = QLIST_FIRST(&mon_fdsets);
if (has_fdset_id) {
if (fdset_id < 0) {
error_setg(errp, QERR_INVALID_PARAMETER_VALUE, "fdset-id",
"a non-negative value");
qemu_mutex_unlock(&mon_fdsets_lock);
return NULL;
}
/* Use specified fdset ID */
QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
mon_fdset_cur = mon_fdset;
if (fdset_id < mon_fdset_cur->id) {
break;
}
}
} else {
/* Use first available fdset ID */
QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
mon_fdset_cur = mon_fdset;
if (fdset_id_prev == mon_fdset_cur->id - 1) {
fdset_id_prev = mon_fdset_cur->id;
continue;
}
break;
}
}
mon_fdset = g_malloc0(sizeof(*mon_fdset));
if (has_fdset_id) {
mon_fdset->id = fdset_id;
} else {
mon_fdset->id = fdset_id_prev + 1;
}
/* The fdset list is ordered by fdset ID */
if (!mon_fdset_cur) {
QLIST_INSERT_HEAD(&mon_fdsets, mon_fdset, next);
} else if (mon_fdset->id < mon_fdset_cur->id) {
QLIST_INSERT_BEFORE(mon_fdset_cur, mon_fdset, next);
} else {
QLIST_INSERT_AFTER(mon_fdset_cur, mon_fdset, next);
}
}
mon_fdset_fd = g_malloc0(sizeof(*mon_fdset_fd));
mon_fdset_fd->fd = fd;
mon_fdset_fd->removed = false;
if (has_opaque) {
mon_fdset_fd->opaque = g_strdup(opaque);
}
QLIST_INSERT_HEAD(&mon_fdset->fds, mon_fdset_fd, next);
fdinfo = g_malloc0(sizeof(*fdinfo));
fdinfo->fdset_id = mon_fdset->id;
fdinfo->fd = mon_fdset_fd->fd;
qemu_mutex_unlock(&mon_fdsets_lock);
return fdinfo;
}
int monitor_fdset_get_fd(int64_t fdset_id, int flags)
{
#ifdef _WIN32
return -ENOENT;
#else
MonFdset *mon_fdset;
MonFdsetFd *mon_fdset_fd;
int mon_fd_flags;
int ret;
qemu_mutex_lock(&mon_fdsets_lock);
QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
if (mon_fdset->id != fdset_id) {
continue;
}
QLIST_FOREACH(mon_fdset_fd, &mon_fdset->fds, next) {
mon_fd_flags = fcntl(mon_fdset_fd->fd, F_GETFL);
if (mon_fd_flags == -1) {
ret = -errno;
goto out;
}
if ((flags & O_ACCMODE) == (mon_fd_flags & O_ACCMODE)) {
ret = mon_fdset_fd->fd;
goto out;
}
}
ret = -EACCES;
goto out;
}
ret = -ENOENT;
out:
qemu_mutex_unlock(&mon_fdsets_lock);
return ret;
#endif
}
int monitor_fdset_dup_fd_add(int64_t fdset_id, int dup_fd)
{
MonFdset *mon_fdset;
MonFdsetFd *mon_fdset_fd_dup;
qemu_mutex_lock(&mon_fdsets_lock);
QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
if (mon_fdset->id != fdset_id) {
continue;
}
QLIST_FOREACH(mon_fdset_fd_dup, &mon_fdset->dup_fds, next) {
if (mon_fdset_fd_dup->fd == dup_fd) {
goto err;
}
}
mon_fdset_fd_dup = g_malloc0(sizeof(*mon_fdset_fd_dup));
mon_fdset_fd_dup->fd = dup_fd;
QLIST_INSERT_HEAD(&mon_fdset->dup_fds, mon_fdset_fd_dup, next);
qemu_mutex_unlock(&mon_fdsets_lock);
return 0;
}
err:
qemu_mutex_unlock(&mon_fdsets_lock);
return -1;
}
static int monitor_fdset_dup_fd_find_remove(int dup_fd, bool remove)
{
MonFdset *mon_fdset;
MonFdsetFd *mon_fdset_fd_dup;
qemu_mutex_lock(&mon_fdsets_lock);
QLIST_FOREACH(mon_fdset, &mon_fdsets, next) {
QLIST_FOREACH(mon_fdset_fd_dup, &mon_fdset->dup_fds, next) {
if (mon_fdset_fd_dup->fd == dup_fd) {
if (remove) {
QLIST_REMOVE(mon_fdset_fd_dup, next);
if (QLIST_EMPTY(&mon_fdset->dup_fds)) {
monitor_fdset_cleanup(mon_fdset);
}
goto err;
} else {
qemu_mutex_unlock(&mon_fdsets_lock);
return mon_fdset->id;
}
}
}
}
err:
qemu_mutex_unlock(&mon_fdsets_lock);
return -1;
}
int monitor_fdset_dup_fd_find(int dup_fd)
{
return monitor_fdset_dup_fd_find_remove(dup_fd, false);
}
void monitor_fdset_dup_fd_remove(int dup_fd)
{
monitor_fdset_dup_fd_find_remove(dup_fd, true);
}
int monitor_fd_param(Monitor *mon, const char *fdname, Error **errp)
{
int fd;
Error *local_err = NULL;
if (!qemu_isdigit(fdname[0]) && mon) {
fd = monitor_get_fd(mon, fdname, &local_err);
} else {
fd = qemu_parse_fd(fdname);
if (fd == -1) {
error_setg(&local_err, "Invalid file descriptor number '%s'",
fdname);
}
}
if (local_err) {
error_propagate(errp, local_err);
assert(fd == -1);
} else {
assert(fd != -1);
}
return fd;
}
/* Please update hmp-commands.hx when adding or changing commands */
static mon_cmd_t info_cmds[] = {
#include "hmp-commands-info.h"
{ NULL, NULL, },
};
/* mon_cmds and info_cmds would be sorted at runtime */
static mon_cmd_t mon_cmds[] = {
#include "hmp-commands.h"
{ NULL, NULL, },
};
/*******************************************************************/
static const char *pch;
static sigjmp_buf expr_env;
static void GCC_FMT_ATTR(2, 3) QEMU_NORETURN
expr_error(Monitor *mon, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
monitor_vprintf(mon, fmt, ap);
monitor_printf(mon, "\n");
va_end(ap);
siglongjmp(expr_env, 1);
}
/* return 0 if OK, -1 if not found */
static int get_monitor_def(target_long *pval, const char *name)
{
const MonitorDef *md = target_monitor_defs();
CPUState *cs = mon_get_cpu();
void *ptr;
uint64_t tmp = 0;
int ret;
if (cs == NULL || md == NULL) {
return -1;
}
for(; md->name != NULL; md++) {
if (compare_cmd(name, md->name)) {
if (md->get_value) {
*pval = md->get_value(md, md->offset);
} else {
CPUArchState *env = mon_get_cpu_env();
ptr = (uint8_t *)env + md->offset;
switch(md->type) {
case MD_I32:
*pval = *(int32_t *)ptr;
break;
case MD_TLONG:
*pval = *(target_long *)ptr;
break;
default:
*pval = 0;
break;
}
}
return 0;
}
}
ret = target_get_monitor_def(cs, name, &tmp);
if (!ret) {
*pval = (target_long) tmp;
}
return ret;
}
static void next(void)
{
if (*pch != '\0') {
pch++;
while (qemu_isspace(*pch))
pch++;
}
}
static int64_t expr_sum(Monitor *mon);
static int64_t expr_unary(Monitor *mon)
{
int64_t n;
char *p;
int ret;
switch(*pch) {
case '+':
next();
n = expr_unary(mon);
break;
case '-':
next();
n