C++ VIR_ALLOC函数代码示例

virCPUDefPtr
virCPUDefParseXML(const xmlNodePtr node,
                  xmlXPathContextPtr ctxt,
                  enum virCPUType mode)
{
    virCPUDefPtr def;
    xmlNodePtr *nodes = NULL;
    int n;
    unsigned int i;
    char *cpuMode;

    if (!xmlStrEqual(node->name, BAD_CAST "cpu")) {
        virCPUReportError(VIR_ERR_INTERNAL_ERROR,
                          "%s",
                          _("XML does not contain expected 'cpu' element"));
        return NULL;
    }

    if (VIR_ALLOC(def) < 0) {
        virReportOOMError();
        return NULL;
    }

    if (mode == VIR_CPU_TYPE_AUTO) {
        if (virXPathBoolean("boolean(./arch)", ctxt)) {
            if (virXPathBoolean("boolean(./@match)", ctxt)) {
                virCPUReportError(VIR_ERR_XML_ERROR, "%s",
                        _("'arch' element element cannot be used inside 'cpu'"
                          " element with 'match' attribute'"));
                goto error;
            }
            def->type = VIR_CPU_TYPE_HOST;
        } else {
            def->type = VIR_CPU_TYPE_GUEST;
        }
    } else {
        def->type = mode;
    }

    if ((cpuMode = virXMLPropString(node, "mode"))) {
        if (def->type == VIR_CPU_TYPE_HOST) {
            VIR_FREE(cpuMode);
            virCPUReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
                              _("Attribute mode is only allowed for guest CPU"));
            goto error;
        } else {
            def->mode = virCPUModeTypeFromString(cpuMode);

            if (def->mode < 0) {
                virCPUReportError(VIR_ERR_INTERNAL_ERROR,
                                  _("Invalid mode attribute '%s'"),
                                  cpuMode);
                VIR_FREE(cpuMode);
                goto error;
            }
            VIR_FREE(cpuMode);
        }
    } else {
        if (def->type == VIR_CPU_TYPE_HOST)
            def->mode = -1;
        else
            def->mode = VIR_CPU_MODE_CUSTOM;
    }

    if (def->type == VIR_CPU_TYPE_GUEST) {
        char *match = virXMLPropString(node, "match");

        if (!match) {
            if (virXPathBoolean("boolean(./model)", ctxt))
                def->match = VIR_CPU_MATCH_EXACT;
            else
                def->match = -1;
        } else {
            def->match = virCPUMatchTypeFromString(match);
            VIR_FREE(match);

            if (def->match < 0) {
                virCPUReportError(VIR_ERR_INTERNAL_ERROR,
                        "%s", _("Invalid match attribute for CPU specification"));
                goto error;
            }
        }
    }

    if (def->type == VIR_CPU_TYPE_HOST) {
        def->arch = virXPathString("string(./arch[1])", ctxt);
        if (!def->arch) {
            virCPUReportError(VIR_ERR_INTERNAL_ERROR,
                    "%s", _("Missing CPU architecture"));
            goto error;
        }
    }

    if (!(def->model = virXPathString("string(./model[1])", ctxt)) &&
        def->type == VIR_CPU_TYPE_HOST) {
        virCPUReportError(VIR_ERR_INTERNAL_ERROR,
                "%s", _("Missing CPU model name"));
        goto error;
    }

//.........这里部分代码省略.........

static int
virStorageBackendLogicalMakeVol(virStoragePoolObjPtr pool,
                                char **const groups,
                                void *data)
{
    virStorageVolDefPtr vol = NULL;
    unsigned long long offset, size, length;

    /* See if we're only looking for a specific volume */
    if (data != NULL) {
        vol = data;
        if (STRNEQ(vol->name, groups[0]))
            return 0;
    }

    /* Or filling in more data on an existing volume */
    if (vol == NULL)
        vol = virStorageVolDefFindByName(pool, groups[0]);

    /* Or a completely new volume */
    if (vol == NULL) {
        if (VIR_ALLOC(vol) < 0) {
            virReportOOMError();
            return -1;
        }

        vol->type = VIR_STORAGE_VOL_BLOCK;

        if ((vol->name = strdup(groups[0])) == NULL) {
            virReportOOMError();
            virStorageVolDefFree(vol);
            return -1;
        }

        if (VIR_REALLOC_N(pool->volumes.objs,
                          pool->volumes.count + 1)) {
            virReportOOMError();
            virStorageVolDefFree(vol);
            return -1;
        }
        pool->volumes.objs[pool->volumes.count++] = vol;
    }

    if (vol->target.path == NULL) {
        if (virAsprintf(&vol->target.path, "%s/%s",
                        pool->def->target.path, vol->name) < 0) {
            virReportOOMError();
            virStorageVolDefFree(vol);
            return -1;
        }
    }

    if (groups[1] && !STREQ(groups[1], "")) {
        if (virAsprintf(&vol->backingStore.path, "%s/%s",
                        pool->def->target.path, groups[1]) < 0) {
            virReportOOMError();
            virStorageVolDefFree(vol);
            return -1;
        }

        vol->backingStore.format = VIR_STORAGE_POOL_LOGICAL_LVM2;
    }

    if (vol->key == NULL &&
        (vol->key = strdup(groups[2])) == NULL) {
        virReportOOMError();
        return -1;
    }

    if (virStorageBackendUpdateVolInfo(vol, 1) < 0)
        return -1;


    /* Finally fill in extents information */
    if (VIR_REALLOC_N(vol->source.extents,
                      vol->source.nextent + 1) < 0) {
        virReportOOMError();
        return -1;
    }

    if ((vol->source.extents[vol->source.nextent].path =
         strdup(groups[3])) == NULL) {
        virReportOOMError();
        return -1;
    }

    if (virStrToLong_ull(groups[4], NULL, 10, &offset) < 0) {
        virStorageReportError(VIR_ERR_INTERNAL_ERROR,
                              "%s", _("malformed volume extent offset value"));
        return -1;
    }
    if (virStrToLong_ull(groups[5], NULL, 10, &length) < 0) {
        virStorageReportError(VIR_ERR_INTERNAL_ERROR,
                              "%s", _("malformed volume extent length value"));
        return -1;
    }
    if (virStrToLong_ull(groups[6], NULL, 10, &size) < 0) {
        virStorageReportError(VIR_ERR_INTERNAL_ERROR,
                              "%s", _("malformed volume extent size value"));
        return -1;
//.........这里部分代码省略.........

/*
 * Attempt to create a new LUN
 *
 * Returns:
 *
 *  0  => Success
 *  -1 => Failure due to some sort of OOM or other fatal issue found when
 *        attempting to get/update information about a found volume
 *  -2 => Failure to find a stable path, not fatal, caller can try another
 */
static int
virStorageBackendSCSINewLun(virStoragePoolObjPtr pool,
                            uint32_t host ATTRIBUTE_UNUSED,
                            uint32_t bus,
                            uint32_t target,
                            uint32_t lun,
                            const char *dev)
{
    virStorageVolDefPtr vol = NULL;
    char *devpath = NULL;
    int retval = -1;

    /* Check if the pool is using a stable target path. The call to
     * virStorageBackendStablePath will fail if the pool target path
     * isn't stable and just return the strdup'd 'devpath' anyway.
     * This would be indistinguishable to failing to find the stable
     * path to the device if the virDirRead loop to search the
     * target pool path for our devpath had failed.
     */
    if (!virStorageBackendPoolPathIsStable(pool->def->target.path) &&
        !(STREQ(pool->def->target.path, "/dev") ||
          STREQ(pool->def->target.path, "/dev/"))) {
        virReportError(VIR_ERR_INVALID_ARG,
                       _("unable to use target path '%s' for dev '%s'"),
                       NULLSTR(pool->def->target.path), dev);
        goto cleanup;
    }

    if (VIR_ALLOC(vol) < 0)
        goto cleanup;

    vol->type = VIR_STORAGE_VOL_BLOCK;

    /* 'host' is dynamically allocated by the kernel, first come,
     * first served, per HBA. As such it isn't suitable for use
     * in the volume name. We only need uniqueness per-pool, so
     * just leave 'host' out
     */
    if (virAsprintf(&(vol->name), "unit:%u:%u:%u", bus, target, lun) < 0)
        goto cleanup;

    if (virAsprintf(&devpath, "/dev/%s", dev) < 0)
        goto cleanup;

    VIR_DEBUG("Trying to create volume for '%s'", devpath);

    /* Now figure out the stable path
     *
     * XXX this method is O(N) because it scans the pool target
     * dir every time its run. Should figure out a more efficient
     * way of doing this...
     */
    if ((vol->target.path = virStorageBackendStablePath(pool,
                                                        devpath,
                                                        true)) == NULL)
        goto cleanup;

    if (STREQ(devpath, vol->target.path) &&
        !(STREQ(pool->def->target.path, "/dev") ||
          STREQ(pool->def->target.path, "/dev/"))) {

        VIR_DEBUG("No stable path found for '%s' in '%s'",
                  devpath, pool->def->target.path);

        retval = -2;
        goto cleanup;
    }

    /* Allow a volume read failure to ignore or skip this block file */
    if ((retval = virStorageBackendUpdateVolInfo(vol, true,
                                                 VIR_STORAGE_VOL_OPEN_DEFAULT,
                                                 VIR_STORAGE_VOL_READ_NOERROR)) < 0)
        goto cleanup;

    if (!(vol->key = virStorageBackendSCSISerial(vol->target.path)))
        goto cleanup;

    pool->def->capacity += vol->target.capacity;
    pool->def->allocation += vol->target.allocation;

    if (VIR_APPEND_ELEMENT(pool->volumes.objs, pool->volumes.count, vol) < 0)
        goto cleanup;

    vol = NULL;
    retval = 0;

 cleanup:
    virStorageVolDefFree(vol);
    VIR_FREE(devpath);
    return retval;
//.........这里部分代码省略.........

static int
xenFormatXLUSB(virConfPtr conf,
               virDomainDefPtr def)
{
    virConfValuePtr usbVal = NULL;
    int hasUSB = 0;
    size_t i;

    for (i = 0; i < def->nhostdevs; i++) {
        if (def->hostdevs[i]->mode == VIR_DOMAIN_HOSTDEV_MODE_SUBSYS &&
            def->hostdevs[i]->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_USB) {
            hasUSB = 1;
            break;
        }
    }

    if (!hasUSB)
        return 0;

    if (VIR_ALLOC(usbVal) < 0)
        return -1;

    usbVal->type = VIR_CONF_LIST;
    usbVal->list = NULL;

    for (i = 0; i < def->nhostdevs; i++) {
        if (def->hostdevs[i]->mode == VIR_DOMAIN_HOSTDEV_MODE_SUBSYS &&
            def->hostdevs[i]->source.subsys.type == VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_USB) {
            virConfValuePtr val, tmp;
            char *buf;

            if (virAsprintf(&buf, "hostbus=%x,hostaddr=%x",
                            def->hostdevs[i]->source.subsys.u.usb.bus,
                            def->hostdevs[i]->source.subsys.u.usb.device) < 0)
                goto error;

            if (VIR_ALLOC(val) < 0) {
                VIR_FREE(buf);
                goto error;
            }
            val->type = VIR_CONF_STRING;
            val->str = buf;
            tmp = usbVal->list;
            while (tmp && tmp->next)
                tmp = tmp->next;
            if (tmp)
                tmp->next = val;
            else
                usbVal->list = val;
        }
    }

    if (usbVal->list != NULL) {
        int ret = virConfSetValue(conf, "usbdev", usbVal);
        usbVal = NULL;
        if (ret < 0)
            return -1;
    }
    VIR_FREE(usbVal);

    return 0;

 error:
    virConfFreeValue(usbVal);
    return -1;
}

/*
 * For details on xl disk config syntax, see
 * docs/misc/xl-disk-configuration.txt in the Xen sources.  The important
 * section of text is:
 *
 *   More formally, the string is a series of comma-separated keyword/value
 *   pairs, flags and positional parameters.  Parameters which are not bare
 *   keywords and which do not contain "=" symbols are assigned to the
 *   so-far-unspecified positional parameters, in the order below.  The
 *   positional parameters may also be specified explicitly by name.
 *
 *   Each parameter may be specified at most once, either as a positional
 *   parameter or a named parameter.  Default values apply if the parameter
 *   is not specified, or if it is specified with an empty value (whether
 *   positionally or explicitly).
 *
 *   Whitespace may appear before each parameter and will be ignored.
 *
 * The order of the positional parameters mentioned in the quoted text is:
 *
 *   target,format,vdev,access
 *
 * The following options must be specified by key=value:
 *
 *   devtype=<devtype>
 *   backendtype=<backend-type>
 *
 * The following options are currently not supported:
 *
 *   backend=<domain-name>
 *   script=<script>
 *   direct-io-safe
 *
 */
static int
xenParseXLDisk(virConfPtr conf, virDomainDefPtr def)
{
    int ret = -1;
    virConfValuePtr list = virConfGetValue(conf, "disk");
    XLU_Config *xluconf;
    libxl_device_disk *libxldisk;
    virDomainDiskDefPtr disk = NULL;

    if (VIR_ALLOC(libxldisk) < 0)
        return -1;

    if (!(xluconf = xlu_cfg_init(stderr, "command line")))
        goto cleanup;

    if (list && list->type == VIR_CONF_LIST) {
        list = list->list;
        while (list) {
            const char *disk_spec = list->str;

            if (list->type != VIR_CONF_STRING || list->str == NULL)
                goto skipdisk;

            libxl_device_disk_init(libxldisk);

            if (xlu_disk_parse(xluconf, 1, &disk_spec, libxldisk))
                goto fail;

            if (!(disk = virDomainDiskDefNew(NULL)))
                goto fail;

            if (xenParseXLDiskSrc(disk, libxldisk->pdev_path) < 0)
                goto fail;

            if (VIR_STRDUP(disk->dst, libxldisk->vdev) < 0)
                goto fail;

            disk->src->readonly = !libxldisk->readwrite;
            disk->removable = libxldisk->removable;

            if (libxldisk->is_cdrom) {
                if (virDomainDiskSetDriver(disk, "qemu") < 0)
                    goto fail;

                virDomainDiskSetType(disk, VIR_STORAGE_TYPE_FILE);
                disk->device = VIR_DOMAIN_DISK_DEVICE_CDROM;
                if (!disk->src->path || STREQ(disk->src->path, ""))
                    disk->src->format = VIR_STORAGE_FILE_NONE;
                else
                    disk->src->format = VIR_STORAGE_FILE_RAW;
            } else {
                switch (libxldisk->format) {
                case LIBXL_DISK_FORMAT_QCOW:
                    disk->src->format = VIR_STORAGE_FILE_QCOW;
                    break;

                case LIBXL_DISK_FORMAT_QCOW2:
                    disk->src->format = VIR_STORAGE_FILE_QCOW2;
                    break;

                case LIBXL_DISK_FORMAT_VHD:
                    disk->src->format = VIR_STORAGE_FILE_VHD;
                    break;

                case LIBXL_DISK_FORMAT_RAW:
                case LIBXL_DISK_FORMAT_UNKNOWN:
//.........这里部分代码省略.........

/* Functions */
virCapsPtr virLXCDriverCapsInit(virLXCDriverPtr driver)
{
    virCapsPtr caps;
    virCapsGuestPtr guest;
    virArch altArch;
    char *lxc_path = NULL;

    if ((caps = virCapabilitiesNew(virArchFromHost(),
                                   false, false)) == NULL)
        goto error;

    /* Some machines have problematic NUMA toplogy causing
     * unexpected failures. We don't want to break the lxc
     * driver in this scenario, so log errors & carry on
     */
    if (nodeCapsInitNUMA(caps) < 0) {
        virCapabilitiesFreeNUMAInfo(caps);
        VIR_WARN("Failed to query host NUMA topology, disabling NUMA capabilities");
    }

    /* Only probe for power management capabilities in the driver,
     * not in the emulator */
    if (driver && virNodeSuspendGetTargetMask(&caps->host.powerMgmt) < 0)
        VIR_WARN("Failed to get host power management capabilities");

    if (virGetHostUUID(caps->host.host_uuid)) {
        virReportError(VIR_ERR_INTERNAL_ERROR,
                       "%s", _("cannot get the host uuid"));
        goto error;
    }

    if (!(lxc_path = virFileFindResource("libvirt_lxc",
                                         abs_topbuilddir "/src",
                                         LIBEXECDIR)))
        goto error;

    if ((guest = virCapabilitiesAddGuest(caps,
                                         VIR_DOMAIN_OSTYPE_EXE,
                                         caps->host.arch,
                                         lxc_path,
                                         NULL,
                                         0,
                                         NULL)) == NULL)
        goto error;

    if (virCapabilitiesAddGuestDomain(guest,
                                      VIR_DOMAIN_VIRT_LXC,
                                      NULL,
                                      NULL,
                                      0,
                                      NULL) == NULL)
        goto error;

    /* On 64-bit hosts, we can use personality() to request a 32bit process */
    if ((altArch = lxcContainerGetAlt32bitArch(caps->host.arch)) != VIR_ARCH_NONE) {
        if ((guest = virCapabilitiesAddGuest(caps,
                                             VIR_DOMAIN_OSTYPE_EXE,
                                             altArch,
                                             lxc_path,
                                             NULL,
                                             0,
                                             NULL)) == NULL)
            goto error;

        if (virCapabilitiesAddGuestDomain(guest,
                                          VIR_DOMAIN_VIRT_LXC,
                                          NULL,
                                          NULL,
                                          0,
                                          NULL) == NULL)
            goto error;
    }

    VIR_FREE(lxc_path);

    if (driver) {
        /* Security driver data */
        const char *doi, *model, *label, *type;

        doi = virSecurityManagerGetDOI(driver->securityManager);
        model = virSecurityManagerGetModel(driver->securityManager);
        label = virSecurityManagerGetBaseLabel(driver->securityManager,
                                               VIR_DOMAIN_VIRT_LXC);
        type = virDomainVirtTypeToString(VIR_DOMAIN_VIRT_LXC);
        /* Allocate the primary security driver for LXC. */
        if (VIR_ALLOC(caps->host.secModels) < 0)
            goto error;
        caps->host.nsecModels = 1;
        if (VIR_STRDUP(caps->host.secModels[0].model, model) < 0)
            goto error;
        if (VIR_STRDUP(caps->host.secModels[0].doi, doi) < 0)
            goto error;
        if (label &&
            virCapabilitiesHostSecModelAddBaseLabel(&caps->host.secModels[0],
                                                    type,
                                                    label) < 0)
            goto error;

        VIR_DEBUG("Initialized caps for security driver \"%s\" with "
//.........这里部分代码省略.........

static int
xenParseXLOS(virConfPtr conf, virDomainDefPtr def, virCapsPtr caps)
{
    size_t i;

    if (def->os.type == VIR_DOMAIN_OSTYPE_HVM) {
        const char *bios;
        const char *boot;

        if (xenConfigGetString(conf, "bios", &bios, NULL) < 0)
            return -1;

        if (bios && STREQ(bios, "ovmf")) {
            if (VIR_ALLOC(def->os.loader) < 0)
                return -1;

            def->os.loader->type = VIR_DOMAIN_LOADER_TYPE_PFLASH;
            def->os.loader->readonly = VIR_TRISTATE_BOOL_YES;

            if (VIR_STRDUP(def->os.loader->path,
                           LIBXL_FIRMWARE_DIR "/ovmf.bin") < 0)
                return -1;
        } else {
            for (i = 0; i < caps->nguests; i++) {
                if (caps->guests[i]->ostype == VIR_DOMAIN_OSTYPE_HVM &&
                    caps->guests[i]->arch.id == def->os.arch) {
                    if (VIR_ALLOC(def->os.loader) < 0 ||
                        VIR_STRDUP(def->os.loader->path,
                                   caps->guests[i]->arch.defaultInfo.loader) < 0)
                        return -1;
                }
            }
        }

#ifdef LIBXL_HAVE_BUILDINFO_KERNEL
        if (xenConfigCopyStringOpt(conf, "kernel", &def->os.kernel) < 0)
            return -1;

        if (xenConfigCopyStringOpt(conf, "ramdisk", &def->os.initrd) < 0)
            return -1;

        if (xenParseCmdline(conf, &def->os.cmdline) < 0)
            return -1;
#endif

        if (xenConfigGetString(conf, "boot", &boot, "c") < 0)
            return -1;

        for (i = 0; i < VIR_DOMAIN_BOOT_LAST && boot[i]; i++) {
            switch (boot[i]) {
            case 'a':
                def->os.bootDevs[i] = VIR_DOMAIN_BOOT_FLOPPY;
                break;
            case 'd':
                def->os.bootDevs[i] = VIR_DOMAIN_BOOT_CDROM;
                break;
            case 'n':
                def->os.bootDevs[i] = VIR_DOMAIN_BOOT_NET;
                break;
            case 'c':
            default:
                def->os.bootDevs[i] = VIR_DOMAIN_BOOT_DISK;
                break;
            }
            def->os.nBootDevs++;
        }
    } else {
        if (xenConfigCopyStringOpt(conf, "bootloader", &def->os.bootloader) < 0)
            return -1;
        if (xenConfigCopyStringOpt(conf, "bootargs", &def->os.bootloaderArgs) < 0)
            return -1;

        if (xenConfigCopyStringOpt(conf, "kernel", &def->os.kernel) < 0)
            return -1;

        if (xenConfigCopyStringOpt(conf, "ramdisk", &def->os.initrd) < 0)
            return -1;

        if (xenParseCmdline(conf, &def->os.cmdline) < 0)
            return -1;
    }

    return 0;
}

//.........这里部分代码省略.........

        if (!(cfg->configBaseDir = virGetUserConfigDirectory()))
            goto error;

        if (virAsprintf(&cfg->libDir, "%s/qemu/lib", cfg->configBaseDir) < 0)
            goto error;
        if (virAsprintf(&cfg->saveDir, "%s/qemu/save", cfg->configBaseDir) < 0)
            goto error;
        if (virAsprintf(&cfg->snapshotDir, "%s/qemu/snapshot", cfg->configBaseDir) < 0)
            goto error;
        if (virAsprintf(&cfg->autoDumpPath, "%s/qemu/dump", cfg->configBaseDir) < 0)
            goto error;
        if (virAsprintf(&cfg->channelTargetDir,
                        "%s/qemu/channel/target", cfg->configBaseDir) < 0)
            goto error;
        if (virAsprintf(&cfg->nvramDir,
                        "%s/qemu/nvram", cfg->configBaseDir) < 0)
            goto error;
    }

    if (virAsprintf(&cfg->configDir, "%s/qemu", cfg->configBaseDir) < 0)
        goto error;
    if (virAsprintf(&cfg->autostartDir, "%s/qemu/autostart", cfg->configBaseDir) < 0)
        goto error;


    if (VIR_STRDUP(cfg->vncListen, "127.0.0.1") < 0)
        goto error;

    if (VIR_STRDUP(cfg->vncTLSx509certdir, SYSCONFDIR "/pki/libvirt-vnc") < 0)
        goto error;

    if (VIR_STRDUP(cfg->spiceListen, "127.0.0.1") < 0)
        goto error;

    if (VIR_STRDUP(cfg->spiceTLSx509certdir,
                   SYSCONFDIR "/pki/libvirt-spice") < 0)
        goto error;

    cfg->remotePortMin = QEMU_REMOTE_PORT_MIN;
    cfg->remotePortMax = QEMU_REMOTE_PORT_MAX;

    cfg->webSocketPortMin = QEMU_WEBSOCKET_PORT_MIN;
    cfg->webSocketPortMax = QEMU_WEBSOCKET_PORT_MAX;

    cfg->migrationPortMin = QEMU_MIGRATION_PORT_MIN;
    cfg->migrationPortMax = QEMU_MIGRATION_PORT_MAX;

    /* For privileged driver, try and find hugetlbfs mounts automatically.
     * Non-privileged driver requires admin to create a dir for the
     * user, chown it, and then let user configure it manually. */
    if (privileged &&
        virFileFindHugeTLBFS(&cfg->hugetlbfs, &cfg->nhugetlbfs) < 0) {
        /* This however is not implemented on all platforms. */
        virErrorPtr err = virGetLastError();
        if (err && err->code != VIR_ERR_NO_SUPPORT)
            goto error;
    }

    if (VIR_STRDUP(cfg->bridgeHelperName, QEMU_BRIDGE_HELPER) < 0)
        goto error;

    cfg->clearEmulatorCapabilities = true;

    cfg->securityDefaultConfined = true;
    cfg->securityRequireConfined = false;

    cfg->keepAliveInterval = 5;
    cfg->keepAliveCount = 5;
    cfg->seccompSandbox = -1;

    cfg->logTimestamp = true;
    cfg->stdioLogD = true;

#ifdef DEFAULT_LOADER_NVRAM
    if (virFirmwareParseList(DEFAULT_LOADER_NVRAM,
                             &cfg->firmwares,
                             &cfg->nfirmwares) < 0)
        goto error;

#else
    if (VIR_ALLOC_N(cfg->firmwares, 2) < 0)
        goto error;
    cfg->nfirmwares = 2;
    if (VIR_ALLOC(cfg->firmwares[0]) < 0 || VIR_ALLOC(cfg->firmwares[1]) < 0)
        goto error;

    if (VIR_STRDUP(cfg->firmwares[0]->name, VIR_QEMU_AAVMF_LOADER_PATH) < 0 ||
        VIR_STRDUP(cfg->firmwares[0]->nvram, VIR_QEMU_AAVMF_NVRAM_PATH) < 0  ||
        VIR_STRDUP(cfg->firmwares[1]->name, VIR_QEMU_OVMF_LOADER_PATH) < 0 ||
        VIR_STRDUP(cfg->firmwares[1]->nvram, VIR_QEMU_OVMF_NVRAM_PATH) < 0)
        goto error;
#endif

    return cfg;

 error:
    virObjectUnref(cfg);
    return NULL;
}

int virQEMUDriverConfigLoadFile(virQEMUDriverConfigPtr cfg,
                                const char *filename)
{
    virConfPtr conf = NULL;
    virConfValuePtr p;
    int ret = -1;
    size_t i;
    char *stdioHandler = NULL;

    /* Just check the file is readable before opening it, otherwise
     * libvirt emits an error.
     */
    if (access(filename, R_OK) == -1) {
        VIR_INFO("Could not read qemu config file %s", filename);
        return 0;
    }

    if (!(conf = virConfReadFile(filename, 0)))
        goto cleanup;

#define CHECK_TYPE(name, typ)                         \
    if (p && p->type != (typ)) {                      \
        virReportError(VIR_ERR_INTERNAL_ERROR,        \
                       "%s: %s: expected type " #typ, \
                       filename, (name));             \
        goto cleanup;                                 \
    }

#define CHECK_TYPE_ALT(name, type1, type2)                      \
    if (p && (p->type != (type1) && p->type != (type2))) {      \
        virReportError(VIR_ERR_INTERNAL_ERROR,                  \
                       "%s: %s: expected type " #type1,         \
                       filename, (name));                       \
        goto cleanup;                                           \
    }

#define GET_VALUE_LONG(NAME, VAR)                               \
    p = virConfGetValue(conf, NAME);                            \
    CHECK_TYPE_ALT(NAME, VIR_CONF_LONG, VIR_CONF_ULONG);        \
    if (p)                                                      \
        VAR = p->l;

#define GET_VALUE_ULONG(NAME, VAR)    \
    p = virConfGetValue(conf, NAME);  \
    CHECK_TYPE(NAME, VIR_CONF_ULONG); \
    if (p)                            \
        VAR = p->l;

#define GET_VALUE_BOOL(NAME, VAR)     \
    p = virConfGetValue(conf, NAME);  \
    CHECK_TYPE(NAME, VIR_CONF_ULONG); \
    if (p)                            \
        VAR = p->l != 0;

#define GET_VALUE_STR(NAME, VAR)           \
    p = virConfGetValue(conf, NAME);       \
    CHECK_TYPE(NAME, VIR_CONF_STRING);     \
    if (p && p->str) {                     \
        VIR_FREE(VAR);                     \
        if (VIR_STRDUP(VAR, p->str) < 0)   \
            goto cleanup;                  \
    }

    GET_VALUE_BOOL("vnc_auto_unix_socket", cfg->vncAutoUnixSocket);
    GET_VALUE_BOOL("vnc_tls", cfg->vncTLS);
    GET_VALUE_BOOL("vnc_tls_x509_verify", cfg->vncTLSx509verify);
    GET_VALUE_STR("vnc_tls_x509_cert_dir", cfg->vncTLSx509certdir);
    GET_VALUE_STR("vnc_listen", cfg->vncListen);
    GET_VALUE_STR("vnc_password", cfg->vncPassword);
    GET_VALUE_BOOL("vnc_sasl", cfg->vncSASL);
    GET_VALUE_STR("vnc_sasl_dir", cfg->vncSASLdir);
    GET_VALUE_BOOL("vnc_allow_host_audio", cfg->vncAllowHostAudio);
    GET_VALUE_BOOL("nographics_allow_host_audio", cfg->nogfxAllowHostAudio);

    p = virConfGetValue(conf, "security_driver");
    if (p && p->type == VIR_CONF_LIST) {
        size_t len, j;
        virConfValuePtr pp;

        /* Calc length and check items */
        for (len = 0, pp = p->list; pp; len++, pp = pp->next) {
            if (pp->type != VIR_CONF_STRING) {
                virReportError(VIR_ERR_CONF_SYNTAX, "%s",
                               _("security_driver must be a list of strings"));
                goto cleanup;
            }
        }

        if (VIR_ALLOC_N(cfg->securityDriverNames, len + 1) < 0)
            goto cleanup;

        for (i = 0, pp = p->list; pp; i++, pp = pp->next) {
            for (j = 0; j < i; j++) {
                if (STREQ(pp->str, cfg->securityDriverNames[j])) {
                    virReportError(VIR_ERR_CONF_SYNTAX,
                                   _("Duplicate security driver %s"), pp->str);
                    goto cleanup;
                }
            }
            if (VIR_STRDUP(cfg->securityDriverNames[i], pp->str) < 0)
//.........这里部分代码省略.........

/**
 * virObjectEventCallbackListAddID:
 * @conn: pointer to the connection
 * @cbList: the list
 * @key: the optional key of the object to filter on
 * @filter: optional last-ditch filter callback
 * @filter_opaque: opaque data to pass to @filter
 * @klass: the base event class
 * @eventID: the event ID
 * @callback: the callback to add
 * @opaque: opaque data to pass to @callback
 * @freecb: callback to free @opaque
 * @legacy: true if callback is tracked by function instead of callbackID
 * @callbackID: filled with callback ID
 * @serverFilter: true if server supports object filtering
 *
 * Internal function to add a callback from a virObjectEventCallbackListPtr
 */
static int
virObjectEventCallbackListAddID(virConnectPtr conn,
                                virObjectEventCallbackListPtr cbList,
                                const char *key,
                                virObjectEventCallbackFilter filter,
                                void *filter_opaque,
                                virClassPtr klass,
                                int eventID,
                                virConnectObjectEventGenericCallback callback,
                                void *opaque,
                                virFreeCallback freecb,
                                bool legacy,
                                int *callbackID,
                                bool serverFilter)
{
    virObjectEventCallbackPtr cb;
    int ret = -1;
    int remoteID = -1;

    VIR_DEBUG("conn=%p cblist=%p key=%p filter=%p filter_opaque=%p "
              "klass=%p eventID=%d callback=%p opaque=%p "
              "legacy=%d callbackID=%p serverFilter=%d",
              conn, cbList, key, filter, filter_opaque, klass, eventID,
              callback, opaque, legacy, callbackID, serverFilter);

    /* Check incoming */
    if (!cbList)
        return -1;

    /* If there is no additional filtering, then check if we already
     * have this callback on our list.  */
    if (!filter &&
        virObjectEventCallbackLookup(conn, cbList, key,
                                     klass, eventID, callback, legacy,
                                     serverFilter ? &remoteID : NULL) != -1) {
        virReportError(VIR_ERR_INVALID_ARG, "%s",
                       _("event callback already tracked"));
        return -1;
    }
    /* Allocate new cb */
    if (VIR_ALLOC(cb) < 0)
        goto cleanup;
    cb->conn = virObjectRef(conn);
    *callbackID = cb->callbackID = cbList->nextID++;
    cb->cb = callback;
    cb->klass = klass;
    cb->eventID = eventID;
    cb->opaque = opaque;
    cb->freecb = freecb;
    cb->remoteID = remoteID;

    if (key) {
        cb->key_filter = true;
        if (VIR_STRDUP(cb->key, key) < 0)
            goto cleanup;
    }
    cb->filter = filter;
    cb->filter_opaque = filter_opaque;
    cb->legacy = legacy;

    if (VIR_APPEND_ELEMENT(cbList->callbacks, cbList->count, cb) < 0)
        goto cleanup;

    /* When additional filtering is being done, every client callback
     * is matched to exactly one server callback.  */
    if (filter) {
        ret = 1;
    } else {
        ret = virObjectEventCallbackListCount(conn, cbList, klass, eventID,
                                              key, serverFilter);
        if (serverFilter && remoteID < 0)
            ret++;
    }

 cleanup:
    virObjectEventCallbackFree(cb);
    return ret;
}

static virCPUDefPtr
genericBaseline(virCPUDefPtr *cpus,
                unsigned int ncpus,
                const char **models,
                unsigned int nmodels,
                unsigned int flags)
{
    virCPUDefPtr cpu = NULL;
    virCPUFeatureDefPtr features = NULL;
    unsigned int nfeatures;
    unsigned int count;
    size_t i, j;

    virCheckFlags(VIR_CONNECT_BASELINE_CPU_EXPAND_FEATURES |
                  VIR_CONNECT_BASELINE_CPU_MIGRATABLE, NULL);

    if (!cpuModelIsAllowed(cpus[0]->model, models, nmodels)) {
        virReportError(VIR_ERR_CONFIG_UNSUPPORTED,
                       _("CPU model %s is not supported by hypervisor"),
                       cpus[0]->model);
        goto error;
    }

    if (VIR_ALLOC(cpu) < 0 ||
        VIR_STRDUP(cpu->model, cpus[0]->model) < 0 ||
        VIR_ALLOC_N(features, cpus[0]->nfeatures) < 0)
        goto error;

    cpu->arch = cpus[0]->arch;
    cpu->type = VIR_CPU_TYPE_HOST;

    count = nfeatures = cpus[0]->nfeatures;
    for (i = 0; i < nfeatures; i++)
        features[i].name = cpus[0]->features[i].name;

    for (i = 1; i < ncpus; i++) {
        virHashTablePtr hash;

        if (cpu->arch != cpus[i]->arch) {
            virReportError(VIR_ERR_INTERNAL_ERROR,
                           _("CPUs have incompatible architectures: '%s' != '%s'"),
                           virArchToString(cpu->arch),
                           virArchToString(cpus[i]->arch));
            goto error;
        }

        if (STRNEQ(cpu->model, cpus[i]->model)) {
            virReportError(VIR_ERR_INTERNAL_ERROR,
                           _("CPU models don't match: '%s' != '%s'"),
                           cpu->model, cpus[i]->model);
            goto error;
        }

        if (!(hash = genericHashFeatures(cpus[i])))
            goto error;

        for (j = 0; j < nfeatures; j++) {
            if (features[j].name &&
                !virHashLookup(hash, features[j].name)) {
                features[j].name = NULL;
                count--;
            }
        }

        virHashFree(hash);
    }

    if (VIR_ALLOC_N(cpu->features, count) < 0)
        goto error;
    cpu->nfeatures = count;

    j = 0;
    for (i = 0; i < nfeatures; i++) {
        if (!features[i].name)
            continue;

        if (VIR_STRDUP(cpu->features[j++].name, features[i].name) < 0)
            goto error;
    }

 cleanup:
    VIR_FREE(features);

    return cpu;

 error:
    virCPUDefFree(cpu);
    cpu = NULL;
    goto cleanup;
}

static int
virStorageBackendSCSINewLun(virStoragePoolObjPtr pool,
                            uint32_t host ATTRIBUTE_UNUSED,
                            uint32_t bus,
                            uint32_t target,
                            uint32_t lun,
                            const char *dev)
{
    virStorageVolDefPtr vol;
    char *devpath = NULL;
    int retval = 0;

    if (VIR_ALLOC(vol) < 0) {
        retval = -1;
        goto out;
    }

    vol->type = VIR_STORAGE_VOL_BLOCK;

    /* 'host' is dynamically allocated by the kernel, first come,
     * first served, per HBA. As such it isn't suitable for use
     * in the volume name. We only need uniqueness per-pool, so
     * just leave 'host' out
     */
    if (virAsprintf(&(vol->name), "unit:%u:%u:%u", bus, target, lun) < 0) {
        retval = -1;
        goto free_vol;
    }

    if (virAsprintf(&devpath, "/dev/%s", dev) < 0) {
        retval = -1;
        goto free_vol;
    }

    VIR_DEBUG("Trying to create volume for '%s'", devpath);

    /* Now figure out the stable path
     *
     * XXX this method is O(N) because it scans the pool target
     * dir every time its run. Should figure out a more efficient
     * way of doing this...
     */
    if ((vol->target.path = virStorageBackendStablePath(pool,
                                                        devpath,
                                                        true)) == NULL) {
        retval = -1;
        goto free_vol;
    }

    if (STREQ(devpath, vol->target.path) &&
        !(STREQ(pool->def->target.path, "/dev") ||
          STREQ(pool->def->target.path, "/dev/"))) {

        VIR_DEBUG("No stable path found for '%s' in '%s'",
                  devpath, pool->def->target.path);

        retval = -1;
        goto free_vol;
    }

    if (virStorageBackendUpdateVolInfo(vol, true,
                                       VIR_STORAGE_VOL_OPEN_DEFAULT) < 0) {
        retval = -1;
        goto free_vol;
    }

    if (!(vol->key = virStorageBackendSCSISerial(vol->target.path))) {
        retval = -1;
        goto free_vol;
    }

    pool->def->capacity += vol->target.capacity;
    pool->def->allocation += vol->target.allocation;

    if (VIR_APPEND_ELEMENT(pool->volumes.objs, pool->volumes.count, vol) < 0) {
        retval = -1;
        goto free_vol;
    }

    goto out;

 free_vol:
    virStorageVolDefFree(vol);
 out:
    VIR_FREE(devpath);
    return retval;
}

static int virLockManagerLockDaemonNew(virLockManagerPtr lock,
                                       unsigned int type,
                                       size_t nparams,
                                       virLockManagerParamPtr params,
                                       unsigned int flags)
{
    virLockManagerLockDaemonPrivatePtr priv;
    size_t i;

    virCheckFlags(VIR_LOCK_MANAGER_USES_STATE, -1);

    if (VIR_ALLOC(priv) < 0) {
        virReportOOMError();
        return -1;
    }
    lock->privateData = priv;

    switch (type) {
    case VIR_LOCK_MANAGER_OBJECT_TYPE_DOMAIN:
        for (i = 0 ; i < nparams ; i++) {
            if (STREQ(params[i].key, "uuid")) {
                memcpy(priv->uuid, params[i].value.uuid, VIR_UUID_BUFLEN);
            } else if (STREQ(params[i].key, "name")) {
                if (!(priv->name = strdup(params[i].value.str))) {
                    virReportOOMError();
                    return -1;
                }
            } else if (STREQ(params[i].key, "id")) {
                priv->id = params[i].value.i;
            } else if (STREQ(params[i].key, "pid")) {
                priv->pid = params[i].value.i;
            } else if (STREQ(params[i].key, "uri")) {
                /* ignored */
            } else {
                virReportError(VIR_ERR_INTERNAL_ERROR,
                               _("Unexpected parameter %s for object"),
                               params[i].key);
            }
        }
        if (priv->id == 0) {
            virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                           _("Missing ID parameter for domain object"));
            return -1;
        }
        if (priv->pid == 0) {
            virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                           _("Missing PID parameter for domain object"));
            return -1;
        }
        if (!priv->name) {
            virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                           _("Missing name parameter for domain object"));
            return -1;
        }
        if (!virUUIDIsValid(priv->uuid)) {
            virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                           _("Missing UUID parameter for domain object"));
            return -1;
        }
        break;

    default:
        virReportError(VIR_ERR_INTERNAL_ERROR,
                       _("Unknown lock manager object type %d"),
                       type);
        return -1;
    }

    return 0;
}

static virCapsPtr
parallelsBuildCapabilities(void)
{
    virCapsPtr caps = NULL;
    virCPUDefPtr cpu = NULL;
    virCPUDataPtr data = NULL;
    virCapsGuestPtr guest;
    virNodeInfo nodeinfo;

    if ((caps = virCapabilitiesNew(virArchFromHost(),
                                   false, false)) == NULL)
        return NULL;

    if (nodeCapsInitNUMA(caps) < 0)
        goto error;

    if ((guest = virCapabilitiesAddGuest(caps, "hvm",
                                         VIR_ARCH_X86_64,
                                         "parallels",
                                         NULL, 0, NULL)) == NULL)
        goto error;

    if ((guest = virCapabilitiesAddGuest(caps, "hvm",
                                         VIR_ARCH_I686,
                                         "parallels",
                                         NULL, 0, NULL)) == NULL)
        goto error;


    if (virCapabilitiesAddGuestDomain(guest,
                                      "parallels", NULL, NULL, 0, NULL) == NULL)
        goto error;

    if ((guest = virCapabilitiesAddGuest(caps, "exe",
                                         VIR_ARCH_X86_64,
                                         "parallels",
                                         NULL, 0, NULL)) == NULL)
        goto error;

    if (virCapabilitiesAddGuestDomain(guest,
                                      "parallels", NULL, NULL, 0, NULL) == NULL)
        goto error;

    if (nodeGetInfo(&nodeinfo))
        goto error;

    if (VIR_ALLOC(cpu) < 0)
        goto error;

    cpu->arch = caps->host.arch;
    cpu->type = VIR_CPU_TYPE_HOST;
    cpu->sockets = nodeinfo.sockets;
    cpu->cores = nodeinfo.cores;
    cpu->threads = nodeinfo.threads;

    caps->host.cpu = cpu;

    if (!(data = cpuNodeData(cpu->arch))
        || cpuDecode(cpu, data, NULL, 0, NULL) < 0) {
        goto cleanup;
    }

 cleanup:
    cpuDataFree(data);
    return caps;

 error:
    virObjectUnref(caps);
    goto cleanup;
}

/**
 * virDomainEventCallbackListAddID:
 * @conn: pointer to the connection
 * @cbList: the list
 * @eventID: the event ID
 * @callback: the callback to add
 * @opaque: opaque data tio pass to callback
 * @callbackID: filled with callback ID
 *
 * Internal function to add a callback from a virDomainEventCallbackListPtr
 */
static int
virDomainEventCallbackListAddID(virConnectPtr conn,
                                virDomainEventCallbackListPtr cbList,
                                virDomainPtr dom,
                                int eventID,
                                virConnectDomainEventGenericCallback callback,
                                void *opaque,
                                virFreeCallback freecb,
                                int *callbackID)
{
    virDomainEventCallbackPtr event;
    int i;
    int ret = 0;

    /* Check incoming */
    if ( !cbList ) {
        return -1;
    }

    /* check if we already have this callback on our list */
    for (i = 0 ; i < cbList->count ; i++) {
        if (cbList->callbacks[i]->cb == VIR_DOMAIN_EVENT_CALLBACK(callback) &&
            cbList->callbacks[i]->eventID == eventID &&
            cbList->callbacks[i]->conn == conn) {
            eventReportError(VIR_ERR_INTERNAL_ERROR, "%s",
                             _("event callback already tracked"));
            return -1;
        }
    }
    /* Allocate new event */
    if (VIR_ALLOC(event) < 0)
        goto no_memory;
    event->conn = conn;
    event->cb = callback;
    event->eventID = eventID;
    event->opaque = opaque;
    event->freecb = freecb;

    if (dom) {
        if (VIR_ALLOC(event->dom) < 0)
            goto no_memory;
        if (!(event->dom->name = strdup(dom->name)))
            goto no_memory;
        memcpy(event->dom->uuid, dom->uuid, VIR_UUID_BUFLEN);
        event->dom->id = dom->id;
    }

    /* Make space on list */
    if (VIR_REALLOC_N(cbList->callbacks, cbList->count + 1) < 0)
        goto no_memory;

    event->conn->refs++;

    cbList->callbacks[cbList->count] = event;
    cbList->count++;

    event->callbackID = cbList->nextID++;

    for (i = 0 ; i < cbList->count ; i++) {
        if (cbList->callbacks[i]->eventID == eventID &&
            cbList->callbacks[i]->conn == conn &&
            !cbList->callbacks[i]->deleted)
            ret++;
    }

    if (callbackID)
        *callbackID = event->callbackID;

    return ret;

no_memory:
    virReportOOMError();

    if (event) {
        if (event->dom)
            VIR_FREE(event->dom->name);
        VIR_FREE(event->dom);
    }
    VIR_FREE(event);
    return -1;
}