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authorKevin Wolf <kwolf@redhat.com>2019-06-13 17:33:57 +0200
committerMarkus Armbruster <armbru@redhat.com>2019-06-17 20:36:56 +0200
commite84328faa99ae50fd9ed36a615927e94327cf249 (patch)
tree0126df000c03d516b7167d8d0d44ced99a4431d3 /monitor/misc.c
parenta0cd5e1c8e7fb1dc882483589fd809ca083a2725 (diff)
Move monitor.c to monitor/misc.c
Create a new monitor/ subdirectory and move monitor.c there. As the plan is to move the monitor core into separate files, use the chance to rename it to misc.c. Signed-off-by: Kevin Wolf <kwolf@redhat.com> Reviewed-by: Dr. David Alan Gilbert <dgilbert@redhat.com> Reviewed-by: Markus Armbruster <armbru@redhat.com> Message-Id: <20190613153405.24769-8-kwolf@redhat.com> Signed-off-by: Markus Armbruster <armbru@redhat.com>
Diffstat (limited to 'monitor/misc.c')
-rw-r--r--monitor/misc.c4780
1 files changed, 4780 insertions, 0 deletions
diff --git a/monitor/misc.c b/monitor/misc.c
new file mode 100644
index 0000000000..c5f8483b7e
--- /dev/null
+++ b/monitor/misc.c
@@ -0,0 +1,4780 @@
+/*
+ * 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/ctype.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 "authz/list.h"
+#include "qapi/util.h"
+#include "sysemu/tcg.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.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-emit-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 HMPCommand {
+ 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 HMPCommand *sub_table;
+ void (*command_completion)(ReadLineState *rs, int nb_args, const char *str);
+} HMPCommand;
+
+/* 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;
+};
+
+/*
+ * 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;
+
+ gchar *mon_cpu_path;
+ 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;
+};
+
+struct MonitorHMP {
+ Monitor common;
+ /*
+ * State used only in the thread "owning" the monitor.
+ * If @use_io_thread, this is @mon_iothread. (This does not actually happen
+ * in the current state of the code.)
+ * Else, it's the main thread.
+ * These members can be safely accessed without locks.
+ */
+ ReadLineState *rs;
+};
+
+typedef struct {
+ Monitor common;
+ 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;
+
+/* 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 */
+ MonitorQMP *mon;
+ /*
+ * 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, monitor_destroyed. */
+static QemuMutex monitor_lock;
+static GHashTable *monitor_qapi_event_state;
+static QTAILQ_HEAD(, Monitor) mon_list;
+static bool monitor_destroyed;
+
+/* Protects mon_fdsets */
+static QemuMutex mon_fdsets_lock;
+static QLIST_HEAD(, MonFdset) mon_fdsets;
+
+static int mon_refcount;
+
+static HMPCommand hmp_cmds[];
+static HMPCommand hmp_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(MonitorHMP *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(MonitorHMP *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->common,
+ "terminal does not support password prompting\n");
+ return -ENOTTY;
+ }
+}
+
+static void qmp_request_free(QMPRequest *req)
+{
+ 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(MonitorQMP *mon)
+{
+ while (!g_queue_is_empty(mon->qmp_requests)) {
+ qmp_request_free(g_queue_pop_head(mon->qmp_requests));
+ }
+}
+
+static void monitor_qmp_cleanup_queues(MonitorQMP *mon)
+{
+ qemu_mutex_lock(&mon->qmp_queue_lock);
+ monitor_qmp_cleanup_req_queue_locked(mon);
+ qemu_mutex_unlock(&mon->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 int monitor_puts(Monitor *mon, const char *str)
+{
+ int i;
+ char c;
+
+ qemu_mutex_lock(&mon->mon_lock);
+ for (i = 0; str[i]; i++) {
+ c = str[i];
+ 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);
+
+ return i;
+}
+
+int monitor_vprintf(Monitor *mon, const char *fmt, va_list ap)
+{
+ char *buf;
+ int n;
+
+ if (!mon)
+ return -1;
+
+ if (monitor_is_qmp(mon)) {
+ return -1;
+ }
+
+ buf = g_strdup_vprintf(fmt, ap);
+ n = monitor_puts(mon, buf);
+ g_free(buf);
+ return n;
+}
+
+int monitor_printf(Monitor *mon, const char *fmt, ...)
+{
+ int ret;
+
+ va_list ap;
+ va_start(ap, fmt);
+ ret = monitor_vprintf(mon, fmt, ap);
+ va_end(ap);
+ return ret;
+}
+
+static void qmp_send_response(MonitorQMP *mon, const QDict *rsp)
+{
+ const QObject *data = QOBJECT(rsp);
+ QString *json;
+
+ json = mon->common.flags & MONITOR_USE_PRETTY ?
+ qobject_to_json_pretty(data) : qobject_to_json(data);
+ assert(json != NULL);
+
+ qstring_append_chr(json, '\n');
+ monitor_puts(&mon->common, 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;
+ MonitorQMP *qmp_mon;
+
+ trace_monitor_protocol_event_emit(event, qdict);
+ QTAILQ_FOREACH(mon, &mon_list, entry) {
+ if (!monitor_is_qmp(mon)) {
+ continue;
+ }
+
+ qmp_mon = container_of(mon, MonitorQMP, common);
+ if (qmp_mon->commands != &qmp_cap_negotiation_commands) {
+ qmp_send_response(qmp_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);
+}
+
+void qapi_event_emit(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);
+}
+
+static void handle_hmp_command(MonitorHMP *mon, const char *cmdline);
+
+static void monitor_iothread_init(void);
+
+static void monitor_data_init(Monitor *mon, int flags, bool skip_flush,
+ bool use_io_thread)
+{
+ if (use_io_thread && !mon_iothread) {
+ monitor_iothread_init();
+ }
+ qemu_mutex_init(&mon->mon_lock);
+ mon->outbuf = qstring_new();
+ mon->skip_flush = skip_flush;
+ mon->use_io_thread = use_io_thread;
+ mon->flags = flags;
+}
+
+static void monitor_data_destroy_qmp(MonitorQMP *mon)
+{
+ json_message_parser_destroy(&mon->parser);
+ qemu_mutex_destroy(&mon->qmp_queue_lock);
+ monitor_qmp_cleanup_req_queue_locked(mon);
+ g_queue_free(mon->qmp_requests);
+}
+
+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)) {
+ monitor_data_destroy_qmp(container_of(mon, MonitorQMP, common));
+ } else {
+ readline_free(container_of(mon, MonitorHMP, common)->rs);
+ }
+ qobject_unref(mon->outbuf);
+ qemu_mutex_destroy(&mon->mon_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;
+ MonitorHMP hmp = {};
+
+ monitor_data_init(&hmp.common, 0, true, false);
+
+ old_mon = cur_mon;
+ cur_mon = &hmp.common;
+
+ 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.common.mon_lock);
+ if (qstring_get_length(hmp.common.outbuf) > 0) {
+ output = g_strdup(qstring_get_str(hmp.common.outbuf));
+ } else {
+ output = g_strdup("");
+ }
+ qemu_mutex_unlock(&hmp.common.mon_lock);
+
+out:
+ monitor_data_destroy(&hmp.common);
+ 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 HMPCommand *cmd)
+{
+ if (!cmd->flags) {
+ return false;
+ }
+
+ return strchr(cmd->flags, 'p');
+}
+
+static void help_cmd_dump_one(Monitor *mon,
+ const HMPCommand *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 HMPCommand *cmds,
+ char **args, int nb_args, int arg_index)
+{
+ const HMPCommand *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, hmp_cmds, 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();
+ } 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;
+ MonitorQMP *mon;
+
+ assert(monitor_is_qmp(cur_mon));
+ mon = container_of(cur_mon, MonitorQMP, common);
+
+ qmp_for_each_command(mon->commands, query_commands_cb, &list);
+
+ return list;
+}
+
+EventInfoList *qmp_query_events(Error **errp)
+{
+ /*
+ * TODO This deprecated command is the only user of
+ * QAPIEvent_str() and QAPIEvent_lookup[]. When the command goes,
+ * they should go, too.
+ */
+ 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);
+}
+
+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);
+
+ 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(MonitorQMP *mon)
+{
+ return mon->capab[QMP_CAPABILITY_OOB];
+}
+
+static void monitor_qmp_caps_reset(MonitorQMP *mon)
+{
+ memset(mon->capab_offered, 0, sizeof(mon->capab_offered));
+ memset(mon->capab, 0, sizeof(mon->capab));
+ mon->capab_offered[QMP_CAPABILITY_OOB] = mon->common.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(MonitorQMP *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->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->capab, capab, sizeof(capab));
+ return true;
+}
+
+void qmp_qmp_capabilities(bool has_enable, QMPCapabilityList *enable,
+ Error **errp)
+{
+ MonitorQMP *mon;
+
+ assert(monitor_is_qmp(cur_mon));
+ mon = container_of(cur_mon, MonitorQMP, common);
+
+ if (mon->commands == &qmp_commands) {
+ error_set(errp, ERROR_CLASS_COMMAND_NOT_FOUND,
+ "Capabilities negotiation is already complete, command "
+ "ignored");
+ return;
+ }
+
+ if (!qmp_caps_accept(mon, enable, errp)) {
+ return;
+ }
+
+ mon->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, NULL, CPU_DUMP_FPU);
+ }
+ } else {
+ cs = mon_get_cpu();
+
+ if (!cs) {
+ monitor_printf(mon, "No CPU available\n");
+ return;
+ }
+
+ cpu_dump_state(cs, NULL, 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();
+ dump_drift_info();
+}
+
+static void hmp_info_opcount(Monitor *mon, const QDict *qdict)
+{
+ dump_opcount_info();
+}
+#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(max, sort_by, coalesce);
+}
+
+static void hmp_info_history(Monitor *mon, const QDict *qdict)
+{
+ MonitorHMP *hmp_mon = container_of(mon, MonitorHMP, common);
+ int i;
+ const char *str;
+
+ if (!hmp_mon->rs) {
+ return;
+ }
+ i = 0;
+ for(;;) {
+ str = readline_get_history(hmp_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, 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) {
+ AddressSpace *as = cs ? cs->as : &address_space_memory;
+ MemTxResult r = address_space_read(as, addr,
+ MEMTXATTRS_UNSPECIFIED, buf, l);
+ if (r != MEMTX_OK) {
+ monitor_printf(mon, " Cannot access memory\n");
+ break;
+ }
+ } 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);
+}
+
+static void hmp_gva2gpa(Monitor *mon, const QDict *qdict)
+{
+ target_ulong addr = qdict_get_int(qdict, "addr");
+ MemTxAttrs attrs;
+ CPUState *cs = mon_get_cpu();
+ hwaddr gpa;
+
+ if (!cs) {
+ monitor_printf(mon, "No cpu\n");
+ return;
+ }
+
+ gpa = cpu_get_phys_page_attrs_debug(cs, addr & TARGET_PAGE_MASK, &attrs);
+ if (gpa == -1) {
+ monitor_printf(mon, "Unmapped\n");
+ } else {
+ monitor_printf(mon, "gpa: %#" HWADDR_PRIx "\n",
+ gpa + (addr & ~TARGET_PAGE_MASK));
+ }
+}
+
+#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(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 QAuthZList *find_auth(Monitor *mon, const char *name)
+{
+ Object *obj;
+ Object *container;
+
+ container = object_get_objects_root();
+ obj = object_resolve_path_component(container, name);
+ if (!obj) {
+ monitor_printf(mon, "acl: unknown list '%s'\n", name);
+ return NULL;
+ }
+
+ return QAUTHZ_LIST(obj);
+}
+
+static bool warn_acl;
+static void hmp_warn_acl(void)
+{
+ if (warn_acl) {
+ return;
+ }
+ error_report("The acl_show, acl_reset, acl_policy, acl_add, acl_remove "
+ "commands are deprecated with no replacement. Authorization "
+ "for VNC should be performed using the pluggable QAuthZ "
+ "objects");
+ warn_acl = true;
+}
+
+static void hmp_acl_show(Monitor *mon, const QDict *qdict)
+{
+ const char *aclname = qdict_get_str(qdict, "aclname");
+ QAuthZList *auth = find_auth(mon, aclname);
+ QAuthZListRuleList *rules;
+ size_t i = 0;
+
+ hmp_warn_acl();
+
+ if (!auth) {
+ return;
+ }
+
+ monitor_printf(mon, "policy: %s\n",
+ QAuthZListPolicy_str(auth->policy));
+
+ rules = auth->rules;
+ while (rules) {
+ QAuthZListRule *rule = rules->value;
+ i++;
+ monitor_printf(mon, "%zu: %s %s\n", i,
+ QAuthZListPolicy_str(rule->policy),
+ rule->match);
+ rules = rules->next;
+ }
+}
+
+static void hmp_acl_reset(Monitor *mon, const QDict *qdict)
+{
+ const char *aclname = qdict_get_str(qdict, "aclname");
+ QAuthZList *auth = find_auth(mon, aclname);
+
+ hmp_warn_acl();
+
+ if (!auth) {
+ return;
+ }
+
+ auth->policy = QAUTHZ_LIST_POLICY_DENY;
+ qapi_free_QAuthZListRuleList(auth->rules);
+ auth->rules = NULL;
+ 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");
+ QAuthZList *auth = find_auth(mon, aclname);
+ int val;
+ Error *err = NULL;
+
+ hmp_warn_acl();
+
+ if (!auth) {
+ return;
+ }
+
+ val = qapi_enum_parse(&QAuthZListPolicy_lookup,
+ policy,
+ QAUTHZ_LIST_POLICY_DENY,
+ &err);
+ if (err) {
+ error_free(err);
+ monitor_printf(mon, "acl: unknown policy '%s', "
+ "expected 'deny' or 'allow'\n", policy);
+ } else {
+ auth->policy = val;
+ if (auth->policy == QAUTHZ_LIST_POLICY_ALLOW) {
+ monitor_printf(mon, "acl: policy set to 'allow'\n");
+ } else {
+ monitor_printf(mon, "acl: policy set to 'deny'\n");
+ }
+ }
+}
+
+static QAuthZListFormat hmp_acl_get_format(const char *match)
+{
+ if (strchr(match, '*')) {
+ return QAUTHZ_LIST_FORMAT_GLOB;
+ } else {
+ return QAUTHZ_LIST_FORMAT_EXACT;
+ }
+}
+
+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 *policystr = qdict_get_str(qdict, "policy");
+ int has_index = qdict_haskey(qdict, "index");
+ int index = qdict_get_try_int(qdict, "index", -1);
+ QAuthZList *auth = find_auth(mon, aclname);
+ Error *err = NULL;
+ QAuthZListPolicy policy;
+ QAuthZListFormat format;
+ size_t i = 0;
+
+ hmp_warn_acl();
+
+ if (!auth) {
+ return;
+ }
+
+ policy = qapi_enum_parse(&QAuthZListPolicy_lookup,
+ policystr,
+ QAUTHZ_LIST_POLICY_DENY,
+ &err);
+ if (err) {
+ error_free(err);
+ monitor_printf(mon, "acl: unknown policy '%s', "
+ "expected 'deny' or 'allow'\n", policystr);
+ return;
+ }
+
+ format = hmp_acl_get_format(match);
+
+ if (has_index && index == 0) {
+ monitor_printf(mon, "acl: unable to add acl entry\n");
+ return;
+ }
+
+ if (has_index) {
+ i = qauthz_list_insert_rule(auth, match, policy,
+ format, index - 1, &err);
+ } else {
+ i = qauthz_list_append_rule(auth, match, policy,
+ format, &err);
+ }
+ if (err) {
+ monitor_printf(mon, "acl: unable to add rule: %s",
+ error_get_pretty(err));
+ error_free(err);
+ } else {
+ monitor_printf(mon, "acl: added rule at position %zu\n", i + 1);
+ }
+}
+
+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");
+ QAuthZList *auth = find_auth(mon, aclname);
+ ssize_t i = 0;
+
+ hmp_warn_acl();
+
+ if (!auth) {
+ return;
+ }
+
+ i = qauthz_list_delete_rule(auth, match);
+ if (i >= 0) {
+ monitor_printf(mon, "acl: removed rule at position %zu\n", i + 1);
+ } else {
+ monitor_printf(mon, "acl: no matching acl entry\n");
+ }
+}
+
+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 int64_t 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;
+}
+
+int64_t 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 HMPCommand hmp_info_cmds[] = {
+#include "hmp-commands-info.h"
+ { NULL, NULL, },
+};
+
+/* hmp_cmds and hmp_info_cmds would be sorted at runtime */
+static HMPCommand hmp_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 = -expr_unary(mon);
+ break;
+ case '~':
+ next();
+ n = ~expr_unary(mon);
+ break;
+ case '(':
+ next();
+ n = expr_sum(mon);
+ if (*pch != ')') {
+ expr_error(mon, "')' expected");
+ }
+ next();
+ break;
+ case '\'':
+ pch++;
+ if (*pch == '\0')
+ expr_error(mon, "character constant expected");
+ n = *pch;
+ pch++;
+ if (*pch != '\'')
+ expr_error(mon, "missing terminating \' character");
+ next();
+ break;
+ case '$':
+ {
+ char buf[128], *q;
+ target_long reg=0;
+
+ pch++;
+ q = buf;
+ while ((*pch >= 'a' && *pch <= 'z') ||
+ (*pch >= 'A' && *pch <= 'Z') ||
+ (*pch >= '0' && *pch <= '9') ||
+ *pch == '_' || *pch == '.') {
+ if ((q - buf) < sizeof(buf) - 1)
+ *q++ = *pch;
+ pch++;
+ }
+ while (qemu_isspace(*pch))
+ pch++;
+ *q = 0;
+ ret = get_monitor_def(&reg, buf);
+ if (ret < 0)
+ expr_error(mon, "unknown register");
+ n = reg;
+ }
+ break;
+ case '\0':
+ expr_error(mon, "unexpected end of expression");
+ n = 0;
+ break;
+ default:
+ errno = 0;
+ n = strtoull(pch, &p, 0);
+ if (errno == ERANGE) {
+ expr_error(mon, "number too large");
+ }
+ if (pch == p) {
+ expr_error(mon, "invalid char '%c' in expression", *p);
+ }
+ pch = p;
+ while (qemu_isspace(*pch))
+ pch++;
+ break;
+ }
+ return n;
+}
+
+
+static int64_t expr_prod(Monitor *mon)
+{
+ int64_t val, val2;
+ int op;
+
+ val = expr_unary(mon);
+ for(;;) {
+ op = *pch;
+ if (op != '*' && op != '/' && op != '%')
+ break;
+ next();
+ val2 = expr_unary(mon);
+ switch(op) {
+ default:
+ case '*':
+ val *= val2;
+ break;
+ case '/':
+ case '%':
+ if (val2 == 0)
+ expr_error(mon, "division by zero");
+ if (op == '/')
+ val /= val2;
+ else
+ val %= val2;
+ break;
+ }
+ }
+ return val;
+}
+
+static int64_t expr_logic(Monitor *mon)
+{
+ int64_t val, val2;
+ int op;
+
+ val = expr_prod(mon);
+ for(;;) {
+ op = *pch;
+ if (op != '&' && op != '|' && op != '^')
+ break;
+ next();
+ val2 = expr_prod(mon);
+ switch(op) {
+ default:
+ case '&':
+ val &= val2;
+ break;
+ case '|':
+ val |= val2;
+ break;
+ case '^':
+ val ^= val2;
+ break;
+ }
+ }
+ return val;
+}
+
+static int64_t expr_sum(Monitor *mon)
+{
+ int64_t val, val2;
+ int op;
+
+ val = expr_logic(mon);
+ for(;;) {
+ op = *pch;
+ if (op != '+' && op != '-')
+ break;
+ next();
+ val2 = expr_logic(mon);
+ if (op == '+')
+ val += val2;
+ else
+ val -= val2;
+ }
+ return val;
+}
+
+static int get_expr(Monitor *mon, int64_t *pval, const char **pp)
+{
+ pch = *pp;
+ if (sigsetjmp(expr_env, 0)) {
+ *pp = pch;
+ return -1;
+ }
+ while (qemu_isspace(*pch))
+ pch++;
+ *pval = expr_sum(mon);
+ *pp = pch;
+ return 0;
+}
+
+static int get_double(Monitor *mon, double *pval, const char **pp)
+{
+ const char *p = *pp;
+ char *tailp;
+ double d;
+
+ d = strtod(p, &tailp);
+ if (tailp == p) {
+ monitor_printf(mon, "Number expected\n");
+ return -1;
+ }
+ if (d != d || d - d != 0) {
+ /* NaN or infinity */
+ monitor_printf(mon, "Bad number\n");
+ return -1;
+ }
+ *pval = d;
+ *pp = tailp;
+ return 0;
+}
+
+/*
+ * Store the command-name in cmdname, and return a pointer to
+ * the remaining of the command string.
+ */
+static const char *get_command_name(const char *cmdline,
+ char *cmdname, size_t nlen)
+{
+ size_t len;
+ const char *p, *pstart;
+
+ p = cmdline;
+ while (qemu_isspace(*p))
+ p++;
+ if (*p == '\0')
+ return NULL;
+ pstart = p;
+ while (*p != '\0' && *p != '/' && !qemu_isspace(*p))
+ p++;
+ len = p - pstart;
+ if (len > nlen - 1)
+ len = nlen - 1;
+ memcpy(cmdname, pstart, len);
+ cmdname[len] = '\0';
+ return p;
+}
+
+/**
+ * Read key of 'type' into 'key' and return the current
+ * 'type' pointer.
+ */
+static char *key_get_info(const char *type, char **key)
+{
+ size_t len;
+ char *p, *str;
+
+ if (*type == ',')
+ type++;
+
+ p = strchr(type, ':');
+ if (!p) {
+ *key = NULL;
+ return NULL;
+ }
+ len = p - type;
+
+ str = g_malloc(len + 1);
+ memcpy(str, type, len);
+ str[len] = '\0';
+
+ *key = str;
+ return ++p;
+}
+
+static int default_fmt_format = 'x';
+static int default_fmt_size = 4;
+
+static int is_valid_option(const char *c, const char *typestr)
+{
+ char option[3];
+
+ option[0] = '-';
+ option[1] = *c;
+ option[2] = '\0';
+
+ typestr = strstr(typestr, option);
+ return (typestr != NULL);
+}
+
+static const HMPCommand *search_dispatch_table(const HMPCommand *disp_table,
+ const char *cmdname)
+{
+ const HMPCommand *cmd;
+
+ for (cmd = disp_table; cmd->name != NULL; cmd++) {
+ if (compare_cmd(cmdname, cmd->name)) {
+ return cmd;
+ }
+ }
+
+ return NULL;
+}
+
+/*
+ * Parse command name from @cmdp according to command table @table.
+ * If blank, return NULL.
+ * Else, if no valid command can be found, report to @mon, and return
+ * NULL.
+ * Else, change @cmdp to point right behind the name, and return its
+ * command table entry.
+ * Do not assume the return value points into @table! It doesn't when
+ * the command is found in a sub-command table.
+ */
+static const HMPCommand *monitor_parse_command(MonitorHMP *hmp_mon,
+ const char *cmdp_start,
+ const char **cmdp,
+ HMPCommand *table)
+{
+ Monitor *mon = &hmp_mon->common;
+ const char *p;
+ const HMPCommand *cmd;
+ char cmdname[256];
+
+ /* extract the command name */
+ p = get_command_name(*cmdp, cmdname, sizeof(cmdname));
+ if (!p)
+ return NULL;
+
+ cmd = search_dispatch_table(table, cmdname);
+ if (!cmd) {
+ monitor_printf(mon, "unknown command: '%.*s'\n",
+ (int)(p - cmdp_start), cmdp_start);
+ return NULL;
+ }
+ if (runstate_check(RUN_STATE_PRECONFIG) && !cmd_can_preconfig(cmd)) {
+ monitor_printf(mon, "Command '%.*s' not available with -preconfig "
+ "until after exit_preconfig.\n",
+ (int)(p - cmdp_start), cmdp_start);
+ return NULL;
+ }
+
+ /* filter out following useless space */
+ while (qemu_isspace(*p)) {
+ p++;
+ }
+
+ *cmdp = p;
+ /* search sub command */
+ if (cmd->sub_table != NULL && *p != '\0') {
+ return monitor_parse_command(hmp_mon, cmdp_start, cmdp, cmd->sub_table);
+ }
+
+ return cmd;
+}
+
+/*
+ * Parse arguments for @cmd.
+ * If it can't be parsed, report to @mon, and return NULL.
+ * Else, insert command arguments into a QDict, and return it.
+ * Note: On success, caller has to free the QDict structure.
+ */
+
+static QDict *monitor_parse_arguments(Monitor *mon,
+ const char **endp,
+ const HMPCommand *cmd)
+{
+ const char *typestr;
+ char *key;
+ int c;
+ const char *p = *endp;
+ char buf[1024];
+ QDict *qdict = qdict_new();
+
+ /* parse the parameters */
+ typestr = cmd->args_type;
+ for(;;) {
+ typestr = key_get_info(typestr, &key);
+ if (!typestr)
+ break;
+ c = *typestr;
+ typestr++;
+ switch(c) {
+ case 'F':
+ case 'B':
+ case 's':
+ {
+ int ret;
+
+ while (qemu_isspace(*p))
+ p++;
+ if (*typestr == '?') {
+ typestr++;
+ if (*p == '\0') {
+ /* no optional string: NULL argument */
+ break;
+ }
+ }
+ ret = get_str(buf, sizeof(buf), &p);
+ if (ret < 0) {
+ switch(c) {
+ case 'F':
+ monitor_printf(mon, "%s: filename expected\n",
+ cmd->name);
+ break;
+ case 'B':
+ monitor_printf(mon, "%s: block device name expected\n",
+ cmd->name);
+ break;
+ default:
+ monitor_printf(mon, "%s: string expected\n", cmd->name);
+ break;
+ }
+ goto fail;
+ }
+ qdict_put_str(qdict, key, buf);
+ }
+ break;
+ case 'O':
+ {
+ QemuOptsList *opts_list;
+ QemuOpts *opts;
+
+ opts_list = qemu_find_opts(key);
+ if (!opts_list || opts_list->desc->name) {
+ goto bad_type;
+ }
+ while (qemu_isspace(*p)) {
+ p++;
+ }
+ if (!*p)
+ break;
+ if (get_str(buf, sizeof(buf), &p) < 0) {
+ goto fail;
+ }
+ opts = qemu_opts_parse_noisily(opts_list, buf, true);
+ if (!opts) {
+ goto fail;
+ }
+ qemu_opts_to_qdict(opts, qdict);
+ qemu_opts_del(opts);
+ }
+ break;
+ case '/':
+ {
+ int count, format, size;
+
+ while (qemu_isspace(*p))
+ p++;
+ if (*p == '/') {
+ /* format found */
+ p++;
+ count = 1;
+ if (qemu_isdigit(*p)) {
+ count = 0;
+ while (qemu_isdigit(*p)) {
+ count = count * 10 + (*p - '0');
+ p++;
+ }
+ }
+ size = -1;
+ format = -1;
+ for(;;) {
+ switch(*p) {
+ case 'o':
+ case 'd':
+ case 'u':
+ case 'x':
+ case 'i':
+ case 'c':
+ format = *p++;
+ break;
+ case 'b':
+ size = 1;
+ p++;
+ break;
+ case 'h':
+ size = 2;
+ p++;
+ break;
+ case 'w':
+ size = 4;
+ p++;
+ break;
+ case 'g':
+ case 'L':
+ size = 8;
+ p++;
+ break;
+ default:
+ goto next;
+ }
+ }
+ next:
+ if (*p != '\0' && !qemu_isspace(*p)) {
+ monitor_printf(mon, "invalid char in format: '%c'\n",
+ *p);
+ goto fail;
+ }
+ if (format < 0)
+ format = default_fmt_format;
+ if (format != 'i') {
+ /* for 'i', not specifying a size gives -1 as size */
+ if (size < 0)
+ size = default_fmt_size;
+ default_fmt_size = size;
+ }
+ default_fmt_format = format;
+ } else {
+ count = 1;
+ format = default_fmt_format;
+ if (format != 'i') {
+ size = default_fmt_size;
+ } else {
+ size = -1;
+ }
+ }
+ qdict_put_int(qdict, "count", count);
+ qdict_put_int(qdict, "format", format);
+ qdict_put_int(qdict, "size", size);
+ }
+ break;
+ case 'i':
+ case 'l':
+ case 'M':
+ {
+ int64_t val;
+
+ while (qemu_isspace(*p))
+ p++;
+ if (*typestr == '?' || *typestr == '.') {
+ if (*typestr == '?') {
+ if (*p == '\0') {
+ typestr++;
+ break;
+ }
+ } else {
+ if (*p == '.') {
+ p++;
+ while (qemu_isspace(*p))
+ p++;
+ } else {
+ typestr++;
+ break;
+ }
+ }
+ typestr++;
+ }
+ if (get_expr(mon, &val, &p))
+ goto fail;
+ /* Check if 'i' is greater than 32-bit */
+ if ((c == 'i') && ((val >> 32) & 0xffffffff)) {
+ monitor_printf(mon, "\'%s\' has failed: ", cmd->name);
+ monitor_printf(mon, "integer is for 32-bit values\n");
+ goto fail;
+ } else if (c == 'M') {
+ if (val < 0) {
+ monitor_printf(mon, "enter a positive value\n");
+ goto fail;
+ }
+ val *= MiB;
+ }
+ qdict_put_int(qdict, key, val);
+ }
+ break;
+ case 'o':
+ {
+ int ret;
+ uint64_t val;
+ const char *end;
+
+ while (qemu_isspace(*p)) {
+ p++;
+ }
+ if (*typestr == '?') {
+ typestr++;
+ if (*p == '\0') {
+ break;
+ }
+ }
+ ret = qemu_strtosz_MiB(p, &end, &val);
+ if (ret < 0 || val > INT64_MAX) {
+ monitor_printf(mon, "invalid size\n");
+ goto fail;
+ }
+ qdict_put_int(qdict, key, val);
+ p = end;
+ }
+ break;
+ case 'T':
+ {
+ double val;
+
+ while (qemu_isspace(*p))
+ p++;
+ if (*typestr == '?') {
+ typestr++;
+ if (*p == '\0') {
+ break;
+ }
+ }
+ if (get_double(mon, &val, &p) < 0) {
+ goto fail;
+ }
+ if (p[0] && p[1] == 's') {
+ switch (*p) {
+ case 'm':
+ val /= 1e3; p += 2; break;
+ case 'u':
+ val /= 1e6; p += 2; break;
+ case 'n':
+ val /= 1e9; p += 2; break;
+ }
+ }
+ if (*p && !qemu_isspace(*p)) {
+ monitor_printf(mon, "Unknown unit suffix\n");
+ goto fail;
+ }
+ qdict_put(qdict, key, qnum_from_double(val));
+ }
+ break;
+ case 'b':
+ {
+ const char *beg;
+ bool val;
+
+ while (qemu_isspace(*p)) {
+ p++;
+ }
+ beg = p;
+ while (qemu_isgraph(*p)) {
+ p++;
+ }
+ if (p - beg == 2 && !memcmp(beg, "on", p - beg)) {
+ val = true;
+ } else if (p - beg == 3 && !memcmp(beg, "off", p - beg)) {
+ val = false;
+ } else {
+ monitor_printf(mon, "Expected 'on' or 'off'\n");
+ goto fail;
+ }
+ qdict_put_bool(qdict, key, val);
+ }
+ break;
+ case '-':
+ {
+ const char *tmp = p;
+ int skip_key = 0;
+ /* option */
+
+ c = *typestr++;
+ if (c == '\0')
+ goto bad_type;
+ while (qemu_isspace(*p))
+ p++;
+ if (*p == '-') {
+ p++;
+ if(c != *p) {
+ if(!is_valid_option(p, typestr)) {
+
+ monitor_printf(mon, "%s: unsupported option -%c\n",
+ cmd->name, *p);
+ goto fail;
+ } else {
+ skip_key = 1;
+ }
+ }
+ if(skip_key) {
+ p = tmp;
+ } else {
+ /* has option */
+ p++;
+ qdict_put_bool(qdict, key, true);
+ }
+ }
+ }
+ break;
+ case 'S':
+ {
+ /* package all remaining string */
+ int len;
+
+ while (qemu_isspace(*p)) {
+ p++;
+ }
+ if (*typestr == '?') {
+ typestr++;
+ if (*p == '\0') {
+ /* no remaining string: NULL argument */
+ break;
+ }
+ }
+ len = strlen(p);
+ if (len <= 0) {
+ monitor_printf(mon, "%s: string expected\n",
+ cmd->name);
+ goto fail;
+ }
+ qdict_put_str(qdict, key, p);
+ p += len;
+ }
+ break;
+ default:
+ bad_type:
+ monitor_printf(mon, "%s: unknown type '%c'\n", cmd->name, c);
+ goto fail;
+ }
+ g_free(key);
+ key = NULL;
+ }
+ /* check that all arguments were parsed */
+ while (qemu_isspace(*p))
+ p++;
+ if (*p != '\0') {
+ monitor_printf(mon, "%s: extraneous characters at the end of line\n",
+ cmd->name);
+ goto fail;
+ }
+
+ return qdict;
+
+fail:
+ qobject_unref(qdict);
+ g_free(key);
+ return NULL;
+}
+
+static void handle_hmp_command(MonitorHMP *mon, const char *cmdline)
+{
+ QDict *qdict;
+ const HMPCommand *cmd;
+ const char *cmd_start = cmdline;
+
+ trace_handle_hmp_command(mon, cmdline);
+
+ cmd = monitor_parse_command(mon, cmdline, &cmdline, hmp_cmds);
+ if (!cmd) {
+ return;
+ }
+
+ qdict = monitor_parse_arguments(&mon->common, &cmdline, cmd);
+ if (!qdict) {
+ while (cmdline > cmd_start && qemu_isspace(cmdline[-1])) {
+ cmdline--;
+ }
+ monitor_printf(&mon->common, "Try \"help %.*s\" for more information\n",
+ (int)(cmdline - cmd_start), cmd_start);
+ return;
+ }
+
+ cmd->cmd(&mon->common, qdict);
+ qobject_unref(qdict);
+}
+
+static void cmd_completion(MonitorHMP *mon, const char *name, const char *list)
+{
+ const char *p, *pstart;
+ char cmd[128];
+ int len;
+
+ p = list;
+ for(;;) {
+ pstart = p;
+ p = qemu_strchrnul(p, '|');
+ len = p - pstart;
+ if (len > sizeof(cmd) - 2)
+ len = sizeof(cmd) - 2;
+ memcpy(cmd, pstart, len);
+ cmd[len] = '\0';
+ if (name[0] == '\0' || !strncmp(name, cmd, strlen(name))) {
+ readline_add_completion(mon->rs, cmd);
+ }
+ if (*p == '\0')
+ break;
+ p++;
+ }
+}
+
+static void file_completion(MonitorHMP *mon, const char *input)
+{
+ DIR *ffs;
+ struct dirent *d;
+ char path[1024];
+ char file[1024], file_prefix[1024];
+ int input_path_len;
+ const char *p;
+
+ p = strrchr(input, '/');
+ if (!p) {
+ input_path_len = 0;
+ pstrcpy(file_prefix, sizeof(file_prefix), input);
+ pstrcpy(path, sizeof(path), ".");
+ } else {
+ input_path_len = p - input + 1;
+ memcpy(path, input, input_path_len);
+ if (input_path_len > sizeof(path) - 1)
+ input_path_len = sizeof(path) - 1;
+ path[input_path_len] = '\0';
+ pstrcpy(file_prefix, sizeof(file_prefix), p + 1);
+ }
+
+ ffs = opendir(path);
+ if (!ffs)
+ return;
+ for(;;) {
+ struct stat sb;
+ d = readdir(ffs);
+ if (!d)
+ break;
+
+ if (strcmp(d->d_name, ".") == 0 || strcmp(d->d_name, "..") == 0) {
+ continue;
+ }
+
+ if (strstart(d->d_name, file_prefix, NULL)) {
+ memcpy(file, input, input_path_len);
+ if (input_path_len < sizeof(file))
+ pstrcpy(file + input_path_len, sizeof(file) - input_path_len,
+ d->d_name);
+ /* stat the file to find out if it's a directory.
+ * In that case add a slash to speed up typing long paths
+ */
+ if (stat(file, &sb) == 0 && S_ISDIR(sb.st_mode)) {
+ pstrcat(file, sizeof(file), "/");
+ }
+ readline_add_completion(mon->rs, file);
+ }
+ }
+ closedir(ffs);
+}
+
+static const char *next_arg_type(const char *typestr)
+{
+ const char *p = strchr(typestr, ':');
+ return (p != NULL ? ++p : typestr);
+}
+
+static void add_completion_option(ReadLineState *rs, const char *str,
+ const char *option)
+{
+ if (!str || !option) {
+ return;
+ }
+ if (!strncmp(option, str, strlen(str))) {
+ readline_add_completion(rs, option);
+ }
+}
+
+void chardev_add_completion(ReadLineState *rs, int nb_args, const char *str)
+{
+ size_t len;
+ ChardevBackendInfoList *list, *start;
+
+ if (nb_args != 2) {
+ return;
+ }
+ len = strlen(str);
+ readline_set_completion_index(rs, len);
+
+ start = list = qmp_query_chardev_backends(NULL);
+ while (list) {
+ const char *chr_name = list->value->name;
+
+ if (!strncmp(chr_name, str, len)) {
+ readline_add_completion(rs, chr_name);
+ }
+ list = list->next;
+ }
+ qapi_free_ChardevBackendInfoList(start);
+}
+
+void netdev_add_completion(ReadLineState *rs, int nb_args, const char *str)
+{
+ size_t len;
+ int i;
+
+ if (nb_args != 2) {
+ return;
+ }
+ len = strlen(str);
+ readline_set_completion_index(rs, len);
+ for (i = 0; i < NET_CLIENT_DRIVER__MAX; i++) {
+ add_completion_option(rs, str, NetClientDriver_str(i));
+ }
+}
+
+void device_add_completion(ReadLineState *rs, int nb_args, const char *str)
+{
+ GSList *list, *elt;
+ size_t len;
+
+ if (nb_args != 2) {
+ return;
+ }
+
+ len = strlen(str);
+ readline_set_completion_index(rs, len);
+ list = elt = object_class_get_list(TYPE_DEVICE, false);
+ while (elt) {
+ const char *name;
+ DeviceClass *dc = OBJECT_CLASS_CHECK(DeviceClass, elt->data,
+ TYPE_DEVICE);
+ name = object_class_get_name(OBJECT_CLASS(dc));
+
+ if (dc->user_creatable
+ && !strncmp(name, str, len)) {
+ readline_add_completion(rs, name);
+ }
+ elt = elt->next;
+ }
+ g_slist_free(list);
+}
+
+void object_add_completion(ReadLineState *rs, int nb_args, const char *str)
+{
+ GSList *list, *elt;
+ size_t len;
+
+ if (nb_args != 2) {
+ return;
+ }
+
+ len = strlen(str);
+ readline_set_completion_index(rs, len);
+ list = elt = object_class_get_list(TYPE_USER_CREATABLE, false);
+ while (elt) {
+ const char *name;
+
+ name = object_class_get_name(OBJECT_CLASS(elt->data));
+ if (!strncmp(name, str, len) && strcmp(name, TYPE_USER_CREATABLE)) {
+ readline_add_completion(rs, name);
+ }
+ elt = elt->next;
+ }
+ g_slist_free(list);
+}
+
+static void peripheral_device_del_completion(ReadLineState *rs,
+ const char *str, size_t len)
+{
+ Object *peripheral = container_get(qdev_get_machine(), "/peripheral");
+ GSList *list, *item;
+
+ list = qdev_build_hotpluggable_device_list(peripheral);
+ if (!list) {
+ return;
+ }
+
+ for (item = list; item; item = g_slist_next(item)) {
+ DeviceState *dev = item->data;
+
+ if (dev->id && !strncmp(str, dev->id, len)) {
+ readline_add_completion(rs, dev->id);
+ }
+ }
+
+ g_slist_free(list);
+}
+
+void chardev_remove_completion(ReadLineState *rs, int nb_args, const char *str)
+{
+ size_t len;
+ ChardevInfoList *list, *start;
+
+ if (nb_args != 2) {
+ return;
+ }
+ len = strlen(str);
+ readline_set_completion_index(rs, len);
+
+ start = list = qmp_query_chardev(NULL);
+ while (list) {
+ ChardevInfo *chr = list->value;
+
+ if (!strncmp(chr->label, str, len)) {
+ readline_add_completion(rs, chr->label);
+ }
+ list = list->next;
+ }
+ qapi_free_ChardevInfoList(start);
+}
+
+static void ringbuf_completion(ReadLineState *rs, const char *str)
+{
+ size_t len;
+ ChardevInfoList *list, *start;
+
+ len = strlen(str);
+ readline_set_completion_index(rs, len);
+
+ start = list = qmp_query_chardev(NULL);
+ while (list) {
+ ChardevInfo *chr_info = list->value;
+
+ if (!strncmp(chr_info->label, str, len)) {
+ Chardev *chr = qemu_chr_find(chr_info->label);
+ if (chr && CHARDEV_IS_RINGBUF(chr)) {
+ readline_add_completion(rs, chr_info->label);
+ }
+ }
+ list = list->next;
+ }
+ qapi_free_ChardevInfoList(start);
+}
+
+void ringbuf_write_completion(ReadLineState *rs, int nb_args, const char *str)
+{
+ if (nb_args != 2) {
+ return;
+ }
+ ringbuf_completion(rs, str);
+}
+
+void device_del_completion(ReadLineState *rs, int nb_args, const char *str)
+{
+ size_t len;
+
+ if (nb_args != 2) {
+ return;
+ }
+
+ len = strlen(str);
+ readline_set_completion_index(rs, len);
+ peripheral_device_del_completion(rs, str, len);
+}
+
+void object_del_completion(ReadLineState *rs, int nb_args, const char *str)
+{
+ ObjectPropertyInfoList *list, *start;
+ size_t len;
+
+ if (nb_args != 2) {
+ return;
+ }
+ len = strlen(str);
+ readline_set_completion_index(rs, len);
+
+ start = list = qmp_qom_list("/objects", NULL);
+ while (list) {
+ ObjectPropertyInfo *info = list->value;
+
+ if (!strncmp(info->type, "child<", 5)
+ && !strncmp(info->name, str, len)) {
+ readline_add_completion(rs, info->name);
+ }
+ list = list->next;
+ }
+ qapi_free_ObjectPropertyInfoList(start);
+}
+
+void sendkey_completion(ReadLineState *rs, int nb_args, const char *str)
+{
+ int i;
+ char *sep;
+ size_t len;
+
+ if (nb_args != 2) {
+ return;
+ }
+ sep = strrchr(str, '-');
+ if (sep) {
+ str = sep + 1;
+ }
+ len = strlen(str);
+ readline_set_completion_index(rs, len);
+ for (i = 0; i < Q_KEY_CODE__MAX; i++) {
+ if (!strncmp(str, QKeyCode_str(i), len)) {
+ readline_add_completion(rs, QKeyCode_str(i));
+ }
+ }
+}
+
+void set_link_completion(ReadLineState *rs, int nb_args, const char *str)
+{
+ size_t len;
+
+ len = strlen(str);
+ readline_set_completion_index(rs, len);
+ if (nb_args == 2) {
+ NetClientState *ncs[MAX_QUEUE_NUM];
+ int count, i;
+ count = qemu_find_net_clients_except(NULL, ncs,
+ NET_CLIENT_DRIVER_NONE,
+ MAX_QUEUE_NUM);
+ for (i = 0; i < MIN(count, MAX_QUEUE_NUM); i++) {
+ const char *name = ncs[i]->name;
+ if (!strncmp(str, name, len)) {
+ readline_add_completion(rs, name);
+ }
+ }
+ } else if (nb_args == 3) {
+ add_completion_option(rs, str, "on");
+ add_completion_option(rs, str, "off");
+ }
+}
+
+void netdev_del_completion(ReadLineState *rs, int nb_args, const char *str)
+{
+ int len, count, i;
+ NetClientState *ncs[MAX_QUEUE_NUM];
+
+ if (nb_args != 2) {
+ return;
+ }
+
+ len = strlen(str);
+ readline_set_completion_index(rs, len);
+ count = qemu_find_net_clients_except(NULL, ncs, NET_CLIENT_DRIVER_NIC,
+ MAX_QUEUE_NUM);
+ for (i = 0; i < MIN(count, MAX_QUEUE_NUM); i++) {
+ QemuOpts *opts;
+ const char *name = ncs[i]->name;
+ if (strncmp(str, name, len)) {
+ continue;
+ }
+ opts = qemu_opts_find(qemu_find_opts_err("netdev", NULL), name);
+ if (opts) {
+ readline_add_completion(rs, name);
+ }
+ }
+}
+
+void info_trace_events_completion(ReadLineState *rs, int nb_args, const char *str)
+{
+ size_t len;
+
+ len = strlen(str);
+ readline_set_completion_index(rs, len);
+ if (nb_args == 2) {
+ TraceEventIter iter;
+ TraceEvent *ev;
+ char *pattern = g_strdup_printf("%s*", str);
+ trace_event_iter_init(&iter, pattern);
+ while ((ev = trace_event_iter_next(&iter)) != NULL) {
+ readline_add_completion(rs, trace_event_get_name(ev));
+ }
+ g_free(pattern);
+ }
+}
+
+void trace_event_completion(ReadLineState *rs, int nb_args, const char *str)
+{
+ size_t len;
+
+ len = strlen(str);
+ readline_set_completion_index(rs, len);
+ if (nb_args == 2) {
+ TraceEventIter iter;
+ TraceEvent *ev;
+ char *pattern = g_strdup_printf("%s*", str);
+ trace_event_iter_init(&iter, pattern);
+ while ((ev = trace_event_iter_next(&iter)) != NULL) {
+ readline_add_completion(rs, trace_event_get_name(ev));
+ }
+ g_free(pattern);
+ } else if (nb_args == 3) {
+ add_completion_option(rs, str, "on");
+ add_completion_option(rs, str, "off");
+ }
+}
+
+void watchdog_action_completion(ReadLineState *rs, int nb_args, const char *str)
+{
+ int i;
+
+ if (nb_args != 2) {
+ return;
+ }
+ readline_set_completion_index(rs, strlen(str));
+ for (i = 0; i < WATCHDOG_ACTION__MAX; i++) {
+ add_completion_option(rs, str, WatchdogAction_str(i));
+ }
+}
+
+void migrate_set_capability_completion(ReadLineState *rs, int nb_args,
+ const char *str)
+{
+ size_t len;
+
+ len = strlen(str);
+ readline_set_completion_index(rs, len);
+ if (nb_args == 2) {
+ int i;
+ for (i = 0; i < MIGRATION_CAPABILITY__MAX; i++) {
+ const char *name = MigrationCapability_str(i);
+ if (!strncmp(str, name, len)) {
+ readline_add_completion(rs, name);
+ }
+ }
+ } else if (nb_args == 3) {
+ add_completion_option(rs, str, "on");
+ add_completion_option(rs, str, "off");
+ }
+}
+
+void migrate_set_parameter_completion(ReadLineState *rs, int nb_args,
+ const char *str)
+{
+ size_t len;
+
+ len = strlen(str);
+ readline_set_completion_index(rs, len);
+ if (nb_args == 2) {
+ int i;
+ for (i = 0; i < MIGRATION_PARAMETER__MAX; i++) {
+ const char *name = MigrationParameter_str(i);
+ if (!strncmp(str, name, len)) {
+ readline_add_completion(rs, name);
+ }
+ }
+ }
+}
+
+static void vm_completion(ReadLineState *rs, const char *str)
+{
+ size_t len;
+ BlockDriverState *bs;
+ BdrvNextIterator it;
+
+ len = strlen(str);
+ readline_set_completion_index(rs, len);
+
+ for (bs = bdrv_first(&it); bs; bs = bdrv_next(&it)) {
+ SnapshotInfoList *snapshots, *snapshot;
+ AioContext *ctx = bdrv_get_aio_context(bs);
+ bool ok = false;
+
+ aio_context_acquire(ctx);
+ if (bdrv_can_snapshot(bs)) {
+ ok = bdrv_query_snapshot_info_list(bs, &snapshots, NULL) == 0;
+ }
+ aio_context_release(ctx);
+ if (!ok) {
+ continue;
+ }
+
+ snapshot = snapshots;
+ while (snapshot) {
+ char *completion = snapshot->value->name;
+ if (!strncmp(str, completion, len)) {
+ readline_add_completion(rs, completion);
+ }
+ completion = snapshot->value->id;
+ if (!strncmp(str, completion, len)) {
+ readline_add_completion(rs, completion);
+ }
+ snapshot = snapshot->next;
+ }
+ qapi_free_SnapshotInfoList(snapshots);
+ }
+
+}
+
+void delvm_completion(ReadLineState *rs, int nb_args, const char *str)
+{
+ if (nb_args == 2) {
+ vm_completion(rs, str);
+ }
+}
+
+void loadvm_completion(ReadLineState *rs, int nb_args, const char *str)
+{
+ if (nb_args == 2) {
+ vm_completion(rs, str);
+ }
+}
+
+static void monitor_find_completion_by_table(MonitorHMP *mon,
+ const HMPCommand *cmd_table,
+ char **args,
+ int nb_args)
+{
+ const char *cmdname;
+ int i;
+ const char *ptype, *old_ptype, *str, *name;
+ const HMPCommand *cmd;
+ BlockBackend *blk = NULL;
+
+ if (nb_args <= 1) {
+ /* command completion */
+ if (nb_args == 0)
+ cmdname = "";
+ else
+ cmdname = args[0];
+ readline_set_completion_index(mon->rs, strlen(cmdname));
+ for (cmd = cmd_table; cmd->name != NULL; cmd++) {
+ if (!runstate_check(RUN_STATE_PRECONFIG) ||
+ cmd_can_preconfig(cmd)) {
+ cmd_completion(mon, cmdname, cmd->name);
+ }
+ }
+ } else {
+ /* find the command */
+ for (cmd = cmd_table; cmd->name != NULL; cmd++) {
+ if (compare_cmd(args[0], cmd->name) &&
+ (!runstate_check(RUN_STATE_PRECONFIG) ||
+ cmd_can_preconfig(cmd))) {
+ break;
+ }
+ }
+ if (!cmd->name) {
+ return;
+ }
+
+ if (cmd->sub_table) {
+ /* do the job again */
+ monitor_find_completion_by_table(mon, cmd->sub_table,
+ &args[1], nb_args - 1);
+ return;
+ }
+ if (cmd->command_completion) {
+ cmd->command_completion(mon->rs, nb_args, args[nb_args - 1]);
+ return;
+ }
+
+ ptype = next_arg_type(cmd->args_type);
+ for(i = 0; i < nb_args - 2; i++) {
+ if (*ptype != '\0') {
+ ptype = next_arg_type(ptype);
+ while (*ptype == '?')
+ ptype = next_arg_type(ptype);
+ }
+ }
+ str = args[nb_args - 1];
+ old_ptype = NULL;
+ while (*ptype == '-' && old_ptype != ptype) {
+ old_ptype = ptype;
+ ptype = next_arg_type(ptype);
+ }
+ switch(*ptype) {
+ case 'F':
+ /* file completion */
+ readline_set_completion_index(mon->rs, strlen(str));
+ file_completion(mon, str);
+ break;
+ case 'B':
+ /* block device name completion */
+ readline_set_completion_index(mon->rs, strlen(str));
+ while ((blk = blk_next(blk)) != NULL) {
+ name = blk_name(blk);
+ if (str[0] == '\0' ||
+ !strncmp(name, str, strlen(str))) {
+ readline_add_completion(mon->rs, name);
+ }
+ }
+ break;
+ case 's':
+ case 'S':
+ if (!strcmp(cmd->name, "help|?")) {
+ monitor_find_completion_by_table(mon, cmd_table,
+ &args[1], nb_args - 1);
+ }
+ break;
+ default:
+ break;
+ }
+ }
+}
+
+static void monitor_find_completion(void *opaque,
+ const char *cmdline)
+{
+ MonitorHMP *mon = opaque;
+ char *args[MAX_ARGS];
+ int nb_args, len;
+
+ /* 1. parse the cmdline */
+ if (parse_cmdline(cmdline, &nb_args, args) < 0) {
+ return;
+ }
+
+ /* if the line ends with a space, it means we want to complete the
+ next arg */
+ len = strlen(cmdline);
+ if (len > 0 && qemu_isspace(cmdline[len - 1])) {
+ if (nb_args >= MAX_ARGS) {
+ goto cleanup;
+ }
+ args[nb_args++] = g_strdup("");
+ }
+
+ /* 2. auto complete according to args */
+ monitor_find_completion_by_table(mon, hmp_cmds, args, nb_args);
+
+cleanup:
+ free_cmdline_args(args, nb_args);
+}
+
+static int monitor_can_read(void *opaque)
+{
+ Monitor *mon = opaque;
+
+ return !atomic_mb_read(&mon->suspend_cnt);
+}
+
+/*
+ * Emit QMP response @rsp with ID @id to @mon.
+ * Null @rsp can only happen for commands with QCO_NO_SUCCESS_RESP.
+ * Nothing is emitted then.
+ */
+static void monitor_qmp_respond(MonitorQMP *mon, QDict *rsp)
+{
+ if (rsp) {
+ qmp_send_response(mon, rsp);
+ }
+}
+
+static void monitor_qmp_dispatch(MonitorQMP *mon, QObject *req)
+{
+ Monitor *old_mon;
+ QDict *rsp;
+ QDict *error;
+
+ old_mon = cur_mon;
+ cur_mon = &mon->common;
+
+ rsp = qmp_dispatch(mon->commands, req, qmp_oob_enabled(mon));
+
+ cur_mon = old_mon;
+
+ if (mon->commands == &qmp_cap_negotiation_commands) {
+ error = qdict_get_qdict(rsp, "error");
+ if (error
+ && !g_strcmp0(qdict_get_try_str(error, "class"),
+ QapiErrorClass_str(ERROR_CLASS_COMMAND_NOT_FOUND))) {
+ /* Provide a more useful error message */
+ qdict_del(error, "desc");
+ qdict_put_str(error, "desc", "Expecting capabilities negotiation"
+ " with 'qmp_capabilities'");
+ }
+ }
+
+ monitor_qmp_respond(mon, rsp);
+ qobject_unref(rsp);
+}
+
+/*
+ * Pop a QMP request from a monitor request queue.
+ * Return the request, or NULL all request queues are empty.
+ * We are using round-robin fashion to pop the request, to avoid
+ * processing commands only on a very busy monitor. To achieve that,
+ * when we process one request on a specific monitor, we put that
+ * monitor to the end of mon_list queue.
+ *
+ * Note: if the function returned with non-NULL, then the caller will
+ * be with qmp_mon->qmp_queue_lock held, and the caller is responsible
+ * to release it.
+ */
+static QMPRequest *monitor_qmp_requests_pop_any_with_lock(void)
+{
+ QMPRequest *req_obj = NULL;
+ Monitor *mon;
+ MonitorQMP *qmp_mon;
+
+ qemu_mutex_lock(&monitor_lock);
+
+ QTAILQ_FOREACH(mon, &mon_list, entry) {
+ if (!monitor_is_qmp(mon)) {
+ continue;
+ }
+
+ qmp_mon = container_of(mon, MonitorQMP, common);
+ qemu_mutex_lock(&qmp_mon->qmp_queue_lock);
+ req_obj = g_queue_pop_head(qmp_mon->qmp_requests);
+ if (req_obj) {
+ /* With the lock of corresponding queue held */
+ break;
+ }
+ qemu_mutex_unlock(&qmp_mon->qmp_queue_lock);
+ }
+
+ if (req_obj) {
+ /*
+ * We found one request on the monitor. Degrade this monitor's
+ * priority to lowest by re-inserting it to end of queue.
+ */
+ QTAILQ_REMOVE(&mon_list, mon, entry);
+ QTAILQ_INSERT_TAIL(&mon_list, mon, entry);
+ }
+
+ qemu_mutex_unlock(&monitor_lock);
+
+ return req_obj;
+}
+
+static void monitor_qmp_bh_dispatcher(void *data)
+{
+ QMPRequest *req_obj = monitor_qmp_requests_pop_any_with_lock();
+ QDict *rsp;
+ bool need_resume;
+ MonitorQMP *mon;
+
+ if (!req_obj) {
+ return;
+ }
+
+ mon = req_obj->mon;
+ /* qmp_oob_enabled() might change after "qmp_capabilities" */
+ need_resume = !qmp_oob_enabled(mon) ||
+ mon->qmp_requests->length == QMP_REQ_QUEUE_LEN_MAX - 1;
+ qemu_mutex_unlock(&mon->qmp_queue_lock);
+ if (req_obj->req) {
+ QDict *qdict = qobject_to(QDict, req_obj->req);
+ QObject *id = qdict ? qdict_get(qdict, "id") : NULL;
+ trace_monitor_qmp_cmd_in_band(qobject_get_try_str(id) ?: "");
+ monitor_qmp_dispatch(mon, req_obj->req);
+ } else {
+ assert(req_obj->err);
+ rsp = qmp_error_response(req_obj->err);
+ req_obj->err = NULL;
+ monitor_qmp_respond(mon, rsp);
+ qobject_unref(rsp);
+ }
+
+ if (need_resume) {
+ /* Pairs with the monitor_suspend() in handle_qmp_command() */
+ monitor_resume(&mon->common);
+ }
+ qmp_request_free(req_obj);
+
+ /* Reschedule instead of looping so the main loop stays responsive */
+ qemu_bh_schedule(qmp_dispatcher_bh);
+}
+
+static void handle_qmp_command(void *opaque, QObject *req, Error *err)
+{
+ MonitorQMP *mon = opaque;
+ QObject *id = NULL;
+ QDict *qdict;
+ QMPRequest *req_obj;
+
+ assert(!req != !err);
+
+ qdict = qobject_to(QDict, req);
+ if (qdict) {
+ id = qdict_get(qdict, "id");
+ } /* else will fail qmp_dispatch() */
+
+ if (req && trace_event_get_state_backends(TRACE_HANDLE_QMP_COMMAND)) {
+ QString *req_json = qobject_to_json(req);
+ trace_handle_qmp_command(mon, qstring_get_str(req_json));
+ qobject_unref(req_json);
+ }
+
+ if (qdict && qmp_is_oob(qdict)) {
+ /* OOB commands are executed immediately */
+ trace_monitor_qmp_cmd_out_of_band(qobject_get_try_str(id) ?: "");
+ monitor_qmp_dispatch(mon, req);
+ qobject_unref(req);
+ return;
+ }
+
+ req_obj = g_new0(QMPRequest, 1);
+ req_obj->mon = mon;
+ req_obj->req = req;
+ req_obj->err = err;
+
+ /* Protect qmp_requests and fetching its length. */
+ qemu_mutex_lock(&mon->qmp_queue_lock);
+
+ /*
+ * Suspend the monitor when we can't queue more requests after
+ * this one. Dequeuing in monitor_qmp_bh_dispatcher() will resume
+ * it. Note that when OOB is disabled, we queue at most one
+ * command, for backward compatibility.
+ */
+ if (!qmp_oob_enabled(mon) ||
+ mon->qmp_requests->length == QMP_REQ_QUEUE_LEN_MAX - 1) {
+ monitor_suspend(&mon->common);
+ }
+
+ /*
+ * Put the request to the end of queue so that requests will be
+ * handled in time order. Ownership for req_obj, req,
+ * etc. will be delivered to the handler side.
+ */
+ assert(mon->qmp_requests->length < QMP_REQ_QUEUE_LEN_MAX);
+ g_queue_push_tail(mon->qmp_requests, req_obj);
+ qemu_mutex_unlock(&mon->qmp_queue_lock);
+
+ /* Kick the dispatcher routine */
+ qemu_bh_schedule(qmp_dispatcher_bh);
+}
+
+static void monitor_qmp_read(void *opaque, const uint8_t *buf, int size)
+{
+ MonitorQMP *mon = opaque;
+
+ json_message_parser_feed(&mon->parser, (const char *) buf, size);
+}
+
+static void monitor_read(void *opaque, const uint8_t *buf, int size)
+{
+ MonitorHMP *mon;
+ Monitor *old_mon = cur_mon;
+ int i;
+
+ cur_mon = opaque;
+ mon = container_of(cur_mon, MonitorHMP, common);
+
+ if (mon->rs) {
+ for (i = 0; i < size; i++)
+ readline_handle_byte(mon->rs, buf[i]);
+ } else {
+ if (size == 0 || buf[size - 1] != 0)
+ monitor_printf(cur_mon, "corrupted command\n");
+ else
+ handle_hmp_command(mon, (char *)buf);
+ }
+
+ cur_mon = old_mon;
+}
+
+static void monitor_command_cb(void *opaque, const char *cmdline,
+ void *readline_opaque)
+{
+ MonitorHMP *mon = opaque;
+
+ monitor_suspend(&mon->common);
+ handle_hmp_command(mon, cmdline);
+ monitor_resume(&mon->common);
+}
+
+int monitor_suspend(Monitor *mon)
+{
+ if (monitor_is_hmp_non_interactive(mon)) {
+ return -ENOTTY;
+ }
+
+ atomic_inc(&mon->suspend_cnt);
+
+ if (mon->use_io_thread) {
+ /*
+ * Kick I/O thread to make sure this takes effect. It'll be
+ * evaluated again in prepare() of the watch object.
+ */
+ aio_notify(iothread_get_aio_context(mon_iothread));
+ }
+
+ trace_monitor_suspend(mon, 1);
+ return 0;
+}
+
+static void monitor_accept_input(void *opaque)
+{
+ Monitor *mon = opaque;
+
+ qemu_chr_fe_accept_input(&mon->chr);
+}
+
+void monitor_resume(Monitor *mon)
+{
+ if (monitor_is_hmp_non_interactive(mon)) {
+ return;
+ }
+
+ if (atomic_dec_fetch(&mon->suspend_cnt) == 0) {
+ AioContext *ctx;
+
+ if (mon->use_io_thread) {
+ ctx = iothread_get_aio_context(mon_iothread);
+ } else {
+ ctx = qemu_get_aio_context();
+ }
+
+ if (!monitor_is_qmp(mon)) {
+ MonitorHMP *hmp_mon = container_of(mon, MonitorHMP, common);
+ assert(hmp_mon->rs);
+ readline_show_prompt(hmp_mon->rs);
+ }
+
+ aio_bh_schedule_oneshot(ctx, monitor_accept_input, mon);
+ }
+
+ trace_monitor_suspend(mon, -1);
+}
+
+static QDict *qmp_greeting(MonitorQMP *mon)
+{
+ QList *cap_list = qlist_new();
+ QObject *ver = NULL;
+ QMPCapability cap;
+
+ qmp_marshal_query_version(NULL, &ver, NULL);
+
+ for (cap = 0; cap < QMP_CAPABILITY__MAX; cap++) {
+ if (mon->capab_offered[cap]) {
+ qlist_append_str(cap_list, QMPCapability_str(cap));
+ }
+ }
+
+ return qdict_from_jsonf_nofail(
+ "{'QMP': {'version': %p, 'capabilities': %p}}",
+ ver, cap_list);
+}
+
+static void monitor_qmp_event(void *opaque, int event)
+{
+ QDict *data;
+ MonitorQMP *mon = opaque;
+
+ switch (event) {
+ case CHR_EVENT_OPENED:
+ mon->commands = &qmp_cap_negotiation_commands;
+ monitor_qmp_caps_reset(mon);
+ data = qmp_greeting(mon);
+ qmp_send_response(mon, data);
+ qobject_unref(data);
+ mon_refcount++;
+ break;
+ case CHR_EVENT_CLOSED:
+ /*
+ * Note: this is only useful when the output of the chardev
+ * backend is still open. For example, when the backend is
+ * stdio, it's possible that stdout is still open when stdin
+ * is closed.
+ */
+ monitor_qmp_cleanup_queues(mon);
+ json_message_parser_destroy(&mon->parser);
+ json_message_parser_init(&mon->parser, handle_qmp_command,
+ mon, NULL);
+ mon_refcount--;
+ monitor_fdsets_cleanup();
+ break;
+ }
+}
+
+static void monitor_event(void *opaque, int event)
+{
+ Monitor *mon = opaque;
+ MonitorHMP *hmp_mon = container_of(mon, MonitorHMP, common);
+
+ switch (event) {
+ case CHR_EVENT_MUX_IN:
+ qemu_mutex_lock(&mon->mon_lock);
+ mon->mux_out = 0;
+ qemu_mutex_unlock(&mon->mon_lock);
+ if (mon->reset_seen) {
+ readline_restart(hmp_mon->rs);
+ monitor_resume(mon);
+ monitor_flush(mon);
+ } else {
+ atomic_mb_set(&mon->suspend_cnt, 0);
+ }
+ break;
+
+ case CHR_EVENT_MUX_OUT:
+ if (mon->reset_seen) {
+ if (atomic_mb_read(&mon->suspend_cnt) == 0) {
+ monitor_printf(mon, "\n");
+ }
+ monitor_flush(mon);
+ monitor_suspend(mon);
+ } else {
+ atomic_inc(&mon->suspend_cnt);
+ }
+ qemu_mutex_lock(&mon->mon_lock);
+ mon->mux_out = 1;
+ qemu_mutex_unlock(&mon->mon_lock);
+ break;
+
+ case CHR_EVENT_OPENED:
+ monitor_printf(mon, "QEMU %s monitor - type 'help' for more "
+ "information\n", QEMU_VERSION);
+ if (!mon->mux_out) {
+ readline_restart(hmp_mon->rs);
+ readline_show_prompt(hmp_mon->rs);
+ }
+ mon->reset_seen = 1;
+ mon_refcount++;
+ break;
+
+ case CHR_EVENT_CLOSED:
+ mon_refcount--;
+ monitor_fdsets_cleanup();
+ break;
+ }
+}
+
+static int
+compare_mon_cmd(const void *a, const void *b)
+{
+ return strcmp(((const HMPCommand *)a)->name,
+ ((const HMPCommand *)b)->name);
+}
+
+static void sortcmdlist(void)
+{
+ qsort(hmp_cmds, ARRAY_SIZE(hmp_cmds) - 1,
+ sizeof(*hmp_cmds),
+ compare_mon_cmd);
+ qsort(hmp_info_cmds, ARRAY_SIZE(hmp_info_cmds) - 1,
+ sizeof(*hmp_info_cmds),
+ compare_mon_cmd);
+}
+
+static void monitor_iothread_init(void)
+{
+ mon_iothread = iothread_create("mon_iothread", &error_abort);
+}
+
+void monitor_init_globals(void)
+{
+ monitor_init_qmp_commands();
+ monitor_qapi_event_init();
+ sortcmdlist();
+ qemu_mutex_init(&monitor_lock);
+ qemu_mutex_init(&mon_fdsets_lock);
+
+ /*
+ * The dispatcher BH must run in the main loop thread, since we
+ * have commands assuming that context. It would be nice to get
+ * rid of those assumptions.
+ */
+ qmp_dispatcher_bh = aio_bh_new(iohandler_get_aio_context(),
+ monitor_qmp_bh_dispatcher,
+ NULL);
+}
+
+/* These functions just adapt the readline interface in a typesafe way. We
+ * could cast function pointers but that discards compiler checks.
+ */
+static void GCC_FMT_ATTR(2, 3) monitor_readline_printf(void *opaque,
+ const char *fmt, ...)
+{
+ MonitorHMP *mon = opaque;
+ va_list ap;
+ va_start(ap, fmt);
+ monitor_vprintf(&mon->common, fmt, ap);
+ va_end(ap);
+}
+
+static void monitor_readline_flush(void *opaque)
+{
+ MonitorHMP *mon = opaque;
+ monitor_flush(&mon->common);
+}
+
+/*
+ * Print to current monitor if we have one, else to stderr.
+ */
+int error_vprintf(const char *fmt, va_list ap)
+{
+ if (cur_mon && !monitor_cur_is_qmp()) {
+ return monitor_vprintf(cur_mon, fmt, ap);
+ }
+ return vfprintf(stderr, fmt, ap);
+}
+
+int error_vprintf_unless_qmp(const char *fmt, va_list ap)
+{
+ if (!cur_mon) {
+ return vfprintf(stderr, fmt, ap);
+ }
+ if (!monitor_cur_is_qmp()) {
+ return monitor_vprintf(cur_mon, fmt, ap);
+ }
+ return -1;
+}
+
+static void monitor_list_append(Monitor *mon)
+{
+ qemu_mutex_lock(&monitor_lock);
+ /*
+ * This prevents inserting new monitors during monitor_cleanup().
+ * A cleaner solution would involve the main thread telling other
+ * threads to terminate, waiting for their termination.
+ */
+ if (!monitor_destroyed) {
+ QTAILQ_INSERT_HEAD(&mon_list, mon, entry);
+ mon = NULL;
+ }
+ qemu_mutex_unlock(&monitor_lock);
+
+ if (mon) {
+ monitor_data_destroy(mon);
+ g_free(mon);
+ }
+}
+
+static void monitor_qmp_setup_handlers_bh(void *opaque)
+{
+ MonitorQMP *mon = opaque;
+ GMainContext *context;
+
+ assert(mon->common.use_io_thread);
+ context = iothread_get_g_main_context(mon_iothread);
+ assert(context);
+ qemu_chr_fe_set_handlers(&mon->common.chr, monitor_can_read,
+ monitor_qmp_read, monitor_qmp_event,
+ NULL, &mon->common, context, true);
+ monitor_list_append(&mon->common);
+}
+
+static void monitor_init_qmp(Chardev *chr, int flags)
+{
+ MonitorQMP *mon = g_new0(MonitorQMP, 1);
+
+ /* Only HMP supports readline */
+ assert(!(flags & MONITOR_USE_READLINE));
+
+ /* Note: we run QMP monitor in I/O thread when @chr supports that */
+ monitor_data_init(&mon->common, flags, false,
+ qemu_chr_has_feature(chr, QEMU_CHAR_FEATURE_GCONTEXT));
+
+ qemu_mutex_init(&mon->qmp_queue_lock);
+ mon->qmp_requests = g_queue_new();
+
+ qemu_chr_fe_init(&mon->common.chr, chr, &error_abort);
+ qemu_chr_fe_set_echo(&mon->common.chr, true);
+
+ json_message_parser_init(&mon->parser, handle_qmp_command, mon, NULL);
+ if (mon->common.use_io_thread) {
+ /*
+ * Make sure the old iowatch is gone. It's possible when
+ * e.g. the chardev is in client mode, with wait=on.
+ */
+ remove_fd_in_watch(chr);
+ /*
+ * We can't call qemu_chr_fe_set_handlers() directly here
+ * since chardev might be running in the monitor I/O
+ * thread. Schedule a bottom half.
+ */
+ aio_bh_schedule_oneshot(iothread_get_aio_context(mon_iothread),
+ monitor_qmp_setup_handlers_bh, mon);
+ /* The bottom half will add @mon to @mon_list */
+ } else {
+ qemu_chr_fe_set_handlers(&mon->common.chr, monitor_can_read,
+ monitor_qmp_read, monitor_qmp_event,
+ NULL, &mon->common, NULL, true);
+ monitor_list_append(&mon->common);
+ }
+}
+
+static void monitor_init_hmp(Chardev *chr, int flags)
+{
+ MonitorHMP *mon = g_new0(MonitorHMP, 1);
+ bool use_readline = flags & MONITOR_USE_READLINE;
+
+ monitor_data_init(&mon->common, flags, false, false);
+ qemu_chr_fe_init(&mon->common.chr, chr, &error_abort);
+
+ if (use_readline) {
+ mon->rs = readline_init(monitor_readline_printf,
+ monitor_readline_flush,
+ mon,
+ monitor_find_completion);
+ monitor_read_command(mon, 0);
+ }
+
+ qemu_chr_fe_set_handlers(&mon->common.chr, monitor_can_read, monitor_read,
+ monitor_event, NULL, &mon->common, NULL, true);
+ monitor_list_append(&mon->common);
+}
+
+void monitor_init(Chardev *chr, int flags)
+{
+ if (flags & MONITOR_USE_CONTROL) {
+ monitor_init_qmp(chr, flags);
+ } else {
+ monitor_init_hmp(chr, flags);
+ }
+}
+
+void monitor_cleanup(void)
+{
+ /*
+ * We need to explicitly stop the I/O thread (but not destroy it),
+ * clean up the monitor resources, then destroy the I/O thread since
+ * we need to unregister from chardev below in
+ * monitor_data_destroy(), and chardev is not thread-safe yet
+ */
+ if (mon_iothread) {
+ iothread_stop(mon_iothread);
+ }
+
+ /* Flush output buffers and destroy monitors */
+ qemu_mutex_lock(&monitor_lock);
+ monitor_destroyed = true;
+ while (!QTAILQ_EMPTY(&mon_list)) {
+ Monitor *mon = QTAILQ_FIRST(&mon_list);
+ QTAILQ_REMOVE(&mon_list, mon, entry);
+ /* Permit QAPI event emission from character frontend release */
+ qemu_mutex_unlock(&monitor_lock);
+ monitor_flush(mon);
+ monitor_data_destroy(mon);
+ qemu_mutex_lock(&monitor_lock);
+ g_free(mon);
+ }
+ qemu_mutex_unlock(&monitor_lock);
+
+ /* QEMUBHs needs to be deleted before destroying the I/O thread */
+ qemu_bh_delete(qmp_dispatcher_bh);
+ qmp_dispatcher_bh = NULL;
+ if (mon_iothread) {
+ iothread_destroy(mon_iothread);
+ mon_iothread = NULL;
+ }
+}
+
+QemuOptsList qemu_mon_opts = {
+ .name = "mon",
+ .implied_opt_name = "chardev",
+ .head = QTAILQ_HEAD_INITIALIZER(qemu_mon_opts.head),
+ .desc = {
+ {
+ .name = "mode",
+ .type = QEMU_OPT_STRING,
+ },{
+ .name = "chardev",
+ .type = QEMU_OPT_STRING,
+ },{
+ .name = "pretty",
+ .type = QEMU_OPT_BOOL,
+ },
+ { /* end of list */ }
+ },
+};
+
+HotpluggableCPUList *qmp_query_hotpluggable_cpus(Error **errp)
+{
+ MachineState *ms = MACHINE(qdev_get_machine());
+ MachineClass *mc = MACHINE_GET_CLASS(ms);
+
+ if (!mc->has_hotpluggable_cpus) {
+ error_setg(errp, QERR_FEATURE_DISABLED, "query-hotpluggable-cpus");
+ return NULL;
+ }
+
+ return machine_query_hotpluggable_cpus(ms);
+}
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-27 15:53:27 +0000