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
  21 NameInfo *qmp_query_name(Error **errp)
  22 {
  23     NameInfo *info = g_malloc0(sizeof(*info));
  24
  25     if (qemu_name) {
  26         info->has_name = true;
  27         info->name = g_strdup(qemu_name);
  28     }
  29
  30     return info;
  31 }
  32
  33 VersionInfo *qmp_query_version(Error **err)
  34 {
  35     VersionInfo *info = g_malloc0(sizeof(*info));
  36     const char *version = QEMU_VERSION;
  37     char *tmp;
  38
  39     info->qemu.major = strtol(version, &tmp, 10);
  40     tmp++;
  41     info->qemu.minor = strtol(tmp, &tmp, 10);
  42     tmp++;
  43     info->qemu.micro = strtol(tmp, &tmp, 10);
  44     info->package = g_strdup(QEMU_PKGVERSION);
  45
  46     return info;
  47 }
  48
  49 KvmInfo *qmp_query_kvm(Error **errp)
  50 {
  51     KvmInfo *info = g_malloc0(sizeof(*info));
  52
  53     info->enabled = kvm_enabled();
  54     info->present = kvm_available();
  55
  56     return info;
  57 }
  58
  59 UuidInfo *qmp_query_uuid(Error **errp)
  60 {
  61     UuidInfo *info = g_malloc0(sizeof(*info));
  62     char uuid[64];
  63
  64     snprintf(uuid, sizeof(uuid), UUID_FMT, qemu_uuid[0], qemu_uuid[1],
  65                    qemu_uuid[2], qemu_uuid[3], qemu_uuid[4], qemu_uuid[5],
  66                    qemu_uuid[6], qemu_uuid[7], qemu_uuid[8], qemu_uuid[9],
  67                    qemu_uuid[10], qemu_uuid[11], qemu_uuid[12], qemu_uuid[13],
  68                    qemu_uuid[14], qemu_uuid[15]);
  69
  70     info->UUID = g_strdup(uuid);
  71     return info;
  72 }
  73
  74 void qmp_quit(Error **err)
  75 {
  76     no_shutdown = 0;
  77     qemu_system_shutdown_request();
  78 }
  79
  80 void qmp_stop(Error **errp)
  81 {
  82     vm_stop(RUN_STATE_PAUSED);
  83 }
  84
  85 void qmp_system_reset(Error **errp)
  86 {
  87     qemu_system_reset_request();
  88 }
  89
  90 void qmp_system_powerdown(Error **erp)
  91 {
  92     qemu_system_powerdown_request();
  93 }
  94
  95 void qmp_cpu(int64_t index, Error **errp)
  96 {
  97     /* Just do nothing */
  98 }
  99
 100 #ifndef CONFIG_VNC
 101 /* If VNC support is enabled, the "true" query-vnc command is
 102    defined in the VNC subsystem */
 103 VncInfo *qmp_query_vnc(Error **errp)
 104 {
 105     error_set(errp, QERR_FEATURE_DISABLED, "vnc");
 106     return NULL;
 107 };
 108 #endif
 109
 110 #ifndef CONFIG_SPICE
 111 /* If SPICE support is enabled, the "true" query-spice command is
 112    defined in the SPICE subsystem. Also note that we use a small
 113    trick to maintain query-spice's original behavior, which is not
 114    to be available in the namespace if SPICE is not compiled in */
 115 SpiceInfo *qmp_query_spice(Error **errp)
 116 {
 117     error_set(errp, QERR_COMMAND_NOT_FOUND, "query-spice");
 118     return NULL;
 119 };
 120 #endif
 121
 122 static void iostatus_bdrv_it(void *opaque, BlockDriverState *bs)
 123 {
 124     bdrv_iostatus_reset(bs);
 125 }
 126
 127 static void encrypted_bdrv_it(void *opaque, BlockDriverState *bs)
 128 {
 129     Error **err = opaque;
 130
 131     if (!error_is_set(err) && bdrv_key_required(bs)) {
 132         error_set(err, QERR_DEVICE_ENCRYPTED, bdrv_get_device_name(bs));
 133     }
 134 }
 135
 136 void qmp_cont(Error **errp)
 137 {
 138     Error *local_err = NULL;
 139
 140     if (runstate_check(RUN_STATE_INMIGRATE)) {
 141         error_set(errp, QERR_MIGRATION_EXPECTED);
 142         return;
 143     } else if (runstate_check(RUN_STATE_INTERNAL_ERROR) ||
 144                runstate_check(RUN_STATE_SHUTDOWN)) {
 145         error_set(errp, QERR_RESET_REQUIRED);
 146         return;
 147     }
 148
 149     bdrv_iterate(iostatus_bdrv_it, NULL);
 150     bdrv_iterate(encrypted_bdrv_it, &local_err);
 151     if (local_err) {
 152         error_propagate(errp, local_err);
 153         return;
 154     }
 155
 156     vm_start();
 157 }
 158
 159 DevicePropertyInfoList *qmp_qom_list(const char *path, Error **errp)
 160 {
 161     DeviceState *dev;
 162     bool ambiguous = false;
 163     DevicePropertyInfoList *props = NULL;
 164     DeviceProperty *prop;
 165
 166     dev = qdev_resolve_path(path, &ambiguous);
 167     if (dev == NULL) {
 168         error_set(errp, QERR_DEVICE_NOT_FOUND, path);
 169         return NULL;
 170     }
 171
 172     QTAILQ_FOREACH(prop, &dev->properties, node) {
 173         DevicePropertyInfoList *entry = g_malloc0(sizeof(*entry));
 174
 175         entry->value = g_malloc0(sizeof(DevicePropertyInfo));
 176         entry->next = props;
 177         props = entry;
 178
 179         entry->value->name = g_strdup(prop->name);
 180         entry->value->type = g_strdup(prop->type);
 181     }
 182
 183     return props;
 184 }