qmp.c

   1 /*
   2  * QEMU Management Protocol
   3  *
   4  * Copyright IBM, Corp. 2011
   5  *
   6  * Authors:
   7  *  Anthony Liguori   <aliguori@us.ibm.com>
   8  *
   9  * This work is licensed under the terms of the GNU GPL, version 2.  See
  10  * the COPYING file in the top-level directory.
  11  *
  12  */
  13
  14 #include "qemu-common.h"
  15 #include "sysemu.h"
  16 #include "qmp-commands.h"
  17 #include "kvm.h"
  18 #include "arch_init.h"
  19 #include "hw/qdev.h"
  20 #include "qapi/qmp-input-visitor.h"
  21 #include "qapi/qmp-output-visitor.h"
  22
  23 NameInfo *qmp_query_name(Error **errp)
  24 {
  25     NameInfo *info = g_malloc0(sizeof(*info));
  26
  27     if (qemu_name) {
  28         info->has_name = true;
  29         info->name = g_strdup(qemu_name);
  30     }
  31
  32     return info;
  33 }
  34
  35 VersionInfo *qmp_query_version(Error **err)
  36 {
  37     VersionInfo *info = g_malloc0(sizeof(*info));
  38     const char *version = QEMU_VERSION;
  39     char *tmp;
  40
  41     info->qemu.major = strtol(version, &tmp, 10);
  42     tmp++;
  43     info->qemu.minor = strtol(tmp, &tmp, 10);
  44     tmp++;
  45     info->qemu.micro = strtol(tmp, &tmp, 10);
  46     info->package = g_strdup(QEMU_PKGVERSION);
  47
  48     return info;
  49 }
  50
  51 KvmInfo *qmp_query_kvm(Error **errp)
  52 {
  53     KvmInfo *info = g_malloc0(sizeof(*info));
  54
  55     info->enabled = kvm_enabled();
  56     info->present = kvm_available();
  57
  58     return info;
  59 }
  60
  61 UuidInfo *qmp_query_uuid(Error **errp)
  62 {
  63     UuidInfo *info = g_malloc0(sizeof(*info));
  64     char uuid[64];
  65
  66     snprintf(uuid, sizeof(uuid), UUID_FMT, qemu_uuid[0], qemu_uuid[1],
  67                    qemu_uuid[2], qemu_uuid[3], qemu_uuid[4], qemu_uuid[5],
  68                    qemu_uuid[6], qemu_uuid[7], qemu_uuid[8], qemu_uuid[9],
  69                    qemu_uuid[10], qemu_uuid[11], qemu_uuid[12], qemu_uuid[13],
  70                    qemu_uuid[14], qemu_uuid[15]);
  71
  72     info->UUID = g_strdup(uuid);
  73     return info;
  74 }
  75
  76 void qmp_quit(Error **err)
  77 {
  78     no_shutdown = 0;
  79     qemu_system_shutdown_request();
  80 }
  81
  82 void qmp_stop(Error **errp)
  83 {
  84     vm_stop(RUN_STATE_PAUSED);
  85 }
  86
  87 void qmp_system_reset(Error **errp)
  88 {
  89     qemu_system_reset_request();
  90 }
  91
  92 void qmp_system_powerdown(Error **erp)
  93 {
  94     qemu_system_powerdown_request();
  95 }
  96
  97 void qmp_cpu(int64_t index, Error **errp)
  98 {
  99     /* Just do nothing */
 100 }
 101
 102 #ifndef CONFIG_VNC
 103 /* If VNC support is enabled, the "true" query-vnc command is
 104    defined in the VNC subsystem */
 105 VncInfo *qmp_query_vnc(Error **errp)
 106 {
 107     error_set(errp, QERR_FEATURE_DISABLED, "vnc");
 108     return NULL;
 109 };
 110 #endif
 111
 112 #ifndef CONFIG_SPICE
 113 /* If SPICE support is enabled, the "true" query-spice command is
 114    defined in the SPICE subsystem. Also note that we use a small
 115    trick to maintain query-spice's original behavior, which is not
 116    to be available in the namespace if SPICE is not compiled in */
 117 SpiceInfo *qmp_query_spice(Error **errp)
 118 {
 119     error_set(errp, QERR_COMMAND_NOT_FOUND, "query-spice");
 120     return NULL;
 121 };
 122 #endif
 123
 124 static void iostatus_bdrv_it(void *opaque, BlockDriverState *bs)
 125 {
 126     bdrv_iostatus_reset(bs);
 127 }
 128
 129 static void encrypted_bdrv_it(void *opaque, BlockDriverState *bs)
 130 {
 131     Error **err = opaque;
 132
 133     if (!error_is_set(err) && bdrv_key_required(bs)) {
 134         error_set(err, QERR_DEVICE_ENCRYPTED, bdrv_get_device_name(bs));
 135     }
 136 }
 137
 138 void qmp_cont(Error **errp)
 139 {
 140     Error *local_err = NULL;
 141
 142     if (runstate_check(RUN_STATE_INMIGRATE)) {
 143         error_set(errp, QERR_MIGRATION_EXPECTED);
 144         return;
 145     } else if (runstate_check(RUN_STATE_INTERNAL_ERROR) ||
 146                runstate_check(RUN_STATE_SHUTDOWN)) {
 147         error_set(errp, QERR_RESET_REQUIRED);
 148         return;
 149     }
 150
 151     bdrv_iterate(iostatus_bdrv_it, NULL);
 152     bdrv_iterate(encrypted_bdrv_it, &local_err);
 153     if (local_err) {
 154         error_propagate(errp, local_err);
 155         return;
 156     }
 157
 158     vm_start();
 159 }
 160
 161 DevicePropertyInfoList *qmp_qom_list(const char *path, Error **errp)
 162 {
 163     DeviceState *dev;
 164     bool ambiguous = false;
 165     DevicePropertyInfoList *props = NULL;
 166     DeviceProperty *prop;
 167
 168     dev = qdev_resolve_path(path, &ambiguous);
 169     if (dev == NULL) {
 170         error_set(errp, QERR_DEVICE_NOT_FOUND, path);
 171         return NULL;
 172     }
 173
 174     QTAILQ_FOREACH(prop, &dev->properties, node) {
 175         DevicePropertyInfoList *entry = g_malloc0(sizeof(*entry));
 176
 177         entry->value = g_malloc0(sizeof(DevicePropertyInfo));
 178         entry->next = props;
 179         props = entry;
 180
 181         entry->value->name = g_strdup(prop->name);
 182         entry->value->type = g_strdup(prop->type);
 183     }
 184
 185     return props;
 186 }
 187
 188 /* FIXME: teach qapi about how to pass through Visitors */
 189 int qmp_qom_set(Monitor *mon, const QDict *qdict, QObject **ret)
 190 {
 191     const char *path = qdict_get_str(qdict, "path");
 192     const char *property = qdict_get_str(qdict, "property");
 193     QObject *value = qdict_get(qdict, "value");
 194     Error *local_err = NULL;
 195     QmpInputVisitor *mi;
 196     DeviceState *dev;
 197
 198     dev = qdev_resolve_path(path, NULL);
 199     if (!dev) {
 200         error_set(&local_err, QERR_DEVICE_NOT_FOUND, path);
 201         goto out;
 202     }
 203
 204     mi = qmp_input_visitor_new(value);
 205     qdev_property_set(dev, qmp_input_get_visitor(mi), property, &local_err);
 206
 207     qmp_input_visitor_cleanup(mi);
 208
 209 out:
 210     if (local_err) {
 211         qerror_report_err(local_err);
 212         error_free(local_err);
 213         return -1;
 214     }
 215
 216     return 0;
 217 }
 218
 219 int qmp_qom_get(Monitor *mon, const QDict *qdict, QObject **ret)
 220 {
 221     const char *path = qdict_get_str(qdict, "path");
 222     const char *property = qdict_get_str(qdict, "property");
 223     Error *local_err = NULL;
 224     QmpOutputVisitor *mo;
 225     DeviceState *dev;
 226
 227     dev = qdev_resolve_path(path, NULL);
 228     if (!dev) {
 229         error_set(&local_err, QERR_DEVICE_NOT_FOUND, path);
 230         goto out;
 231     }
 232
 233     mo = qmp_output_visitor_new();
 234     qdev_property_get(dev, qmp_output_get_visitor(mo), property, &local_err);
 235     if (!local_err) {
 236         *ret = qmp_output_get_qobject(mo);
 237     }
 238
 239     qmp_output_visitor_cleanup(mo);
 240
 241 out:
 242     if (local_err) {
 243         qerror_report_err(local_err);
 244         error_free(local_err);
 245         return -1;
 246     }
 247
 248     return 0;
 249 }