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提交 29293930 编写于 作者: L Laine Stump
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conf: make hostdev info a separate object 

In order to allow for a virDomainHostdevDef that uses the
virDomainDeviceInfo of a "higher level" device (such as a
virDomainNetDef), this patch changes the virDomainDeviceInfo in the
HostdevDef into a virDomainDeviceInfoPtr. Rather than adding checks
all over the code to check for a null info, we just guarantee that it
is always valid. The new function virDomainHostdevDefAlloc() allocates
a virDomainDeviceInfo and plugs it in, and virDomainHostdevDefFree()
makes sure it is freed.

There were 4 places allocating virDomainHostdevDefs, all of them
parsers of one sort or another, and those have all had their
VIR_ALLOC(hostdev) changed to virDomainHostdevDefAlloc(). Other than
that, and the new functions, all the rest of the changes are just
mechanical removals of "&" or changing "." to "->".
上级 2f925c65
隐藏空白更改
内联 并排
Showing with 114 addition and 79 deletion
src/conf/domain_conf.c
浏览文件 @ 29293930
......@@ -786,6 +786,15 @@ bool virDomainObjTaint(virDomainObjPtr obj,
return true;
}
static void
virDomainDeviceInfoFree(virDomainDeviceInfoPtr info)
{
if (info) {
virDomainDeviceInfoClear(info);
VIR_FREE(info);
}
}
static void
virDomainGraphicsAuthDefClear(virDomainGraphicsAuthDefPtr def)
......@@ -1294,12 +1303,42 @@ void virDomainVideoDefFree(virDomainVideoDefPtr def)
VIR_FREE(def);
}
virDomainHostdevDefPtr virDomainHostdevDefAlloc(void)
{
virDomainHostdevDefPtr def = NULL;
if (VIR_ALLOC(def) < 0) {
virReportOOMError();
return NULL;
}
if (VIR_ALLOC(def->info) < 0) {
virReportOOMError();
VIR_FREE(def);
return NULL;
}
return def;
}
void virDomainHostdevDefClear(virDomainHostdevDefPtr def)
{
if (!def)
return;
/* Free all resources in the hostdevdef. Currently the only
* such resource is the virDomainDeviceInfo.
*/
virDomainDeviceInfoFree(def->info);
}
void virDomainHostdevDefFree(virDomainHostdevDefPtr def)
{
if (!def)
return;
virDomainDeviceInfoClear(&def->info);
/* free all subordinate objects */
virDomainHostdevDefClear(def);
VIR_FREE(def);
}
......@@ -1877,7 +1916,7 @@ int virDomainDeviceInfoIterate(virDomainDefPtr def,
device.type = VIR_DOMAIN_DEVICE_HOSTDEV;
for (i = 0; i < def->nhostdevs ; i++) {
device.data.hostdev = def->hostdevs[i];
if (cb(def, &device, &def->hostdevs[i]->info, opaque) < 0)
if (cb(def, &device, def->hostdevs[i]->info, opaque) < 0)
return -1;
}
device.type = VIR_DOMAIN_DEVICE_VIDEO;
......@@ -2743,14 +2782,14 @@ virDomainHostdevSubsysPciDefParseXML(const xmlNodePtr node,
char *devaddr = virXMLPropString(cur, "devaddr");
if (devaddr &&
virDomainParseLegacyDeviceAddress(devaddr,
&def->info.addr.pci) < 0) {
&def->info->addr.pci) < 0) {
virDomainReportError(VIR_ERR_INTERNAL_ERROR,
_("Unable to parse devaddr parameter '%s'"),
devaddr);
VIR_FREE(devaddr);
goto out;
}
def->info.type = VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI;
def->info->type = VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI;
} else if ((flags & VIR_DOMAIN_XML_INTERNAL_PCI_ORIG_STATES) &&
xmlStrEqual(cur->name, BAD_CAST "origstates")) {
virDomainHostdevOrigStatesPtr states = &def->origstates;
......@@ -6379,10 +6418,8 @@ virDomainHostdevDefParseXML(const xmlNodePtr node,
virDomainHostdevDefPtr def;
char *mode, *type = NULL, *managed = NULL;
if (VIR_ALLOC(def) < 0) {
virReportOOMError();
if (!(def = virDomainHostdevDefAlloc()))
return NULL;
}
mode = virXMLPropString(node, "mode");
if (mode) {
......@@ -6445,8 +6482,8 @@ virDomainHostdevDefParseXML(const xmlNodePtr node,
cur = cur->next;
}
if (def->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE) {
if (virDomainDeviceInfoParseXML(node, bootMap, &def->info,
if (def->info->type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE) {
if (virDomainDeviceInfoParseXML(node, bootMap, def->info,
flags | VIR_DOMAIN_XML_INTERNAL_ALLOW_BOOT
| VIR_DOMAIN_XML_INTERNAL_ALLOW_ROM) < 0)
goto error;
......@@ -6455,8 +6492,8 @@ virDomainHostdevDefParseXML(const xmlNodePtr node,
if (def->mode == VIR_DOMAIN_HOSTDEV_MODE_SUBSYS) {
switch (def->source.subsys.type) {
case VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI:
if (def->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE &&
def->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI) {
if (def->info->type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE &&
def->info->type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI) {
virDomainReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("PCI host devices must use 'pci' address type"));
goto error;
......@@ -9015,7 +9052,7 @@ static bool virDomainHostdevDefCheckABIStability(virDomainHostdevDefPtr src,
}
}
if (!virDomainDeviceInfoCheckABIStability(&src->info, &dst->info))
if (!virDomainDeviceInfoCheckABIStability(src->info, dst->info))
goto cleanup;
identical = true;
......@@ -11551,7 +11588,7 @@ virDomainHostdevDefFormat(virBufferPtr buf,
virBufferAddLit(buf, " </source>\n");
if (virDomainDeviceInfoFormat(buf, &def->info,
if (virDomainDeviceInfoFormat(buf, def->info,
flags | VIR_DOMAIN_XML_INTERNAL_ALLOW_BOOT
| VIR_DOMAIN_XML_INTERNAL_ALLOW_ROM) < 0)
return -1;
......
src/conf/domain_conf.h
浏览文件 @ 29293930
......@@ -380,7 +380,7 @@ struct _virDomainHostdevDef {
} caps;
} source;
virDomainHostdevOrigStates origstates;
virDomainDeviceInfo info; /* Guest address */
virDomainDeviceInfoPtr info; /* Guest address */
};
/* Two types of disk backends */
......@@ -1773,6 +1773,8 @@ void virDomainSoundDefFree(virDomainSoundDefPtr def);
void virDomainMemballoonDefFree(virDomainMemballoonDefPtr def);
void virDomainWatchdogDefFree(virDomainWatchdogDefPtr def);
void virDomainVideoDefFree(virDomainVideoDefPtr def);
virDomainHostdevDefPtr virDomainHostdevDefAlloc(void);
void virDomainHostdevDefClear(virDomainHostdevDefPtr def);
void virDomainHostdevDefFree(virDomainHostdevDefPtr def);
void virDomainHubDefFree(virDomainHubDefPtr def);
void virDomainRedirdevDefFree(virDomainRedirdevDefPtr def);
......
src/libvirt_private.syms
浏览文件 @ 29293930
......@@ -351,6 +351,8 @@ virDomainGraphicsSpiceZlibCompressionTypeFromString;
virDomainGraphicsSpiceZlibCompressionTypeToString;
virDomainGraphicsTypeFromString;
virDomainGraphicsTypeToString;
virDomainHostdevDefAlloc;
virDomainHostdevDefClear;
virDomainHostdevDefFree;
virDomainHostdevModeTypeToString;
virDomainHostdevSubsysTypeToString;
......
src/qemu/qemu_command.c
浏览文件 @ 29293930
......@@ -568,7 +568,7 @@ qemuAssignDeviceHostdevAlias(virDomainDefPtr def, virDomainHostdevDefPtr hostdev
idx = 0;
for (i = 0 ; i < def->nhostdevs ; i++) {
int thisidx;
if ((thisidx = qemuDomainDeviceAliasIndex(&def->hostdevs[i]->info, "hostdev")) < 0) {
if ((thisidx = qemuDomainDeviceAliasIndex(def->hostdevs[i]->info, "hostdev")) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("Unable to determine device index for hostdev device"));
return -1;
......@@ -578,7 +578,7 @@ qemuAssignDeviceHostdevAlias(virDomainDefPtr def, virDomainHostdevDefPtr hostdev
}
}
if (virAsprintf(&hostdev->info.alias, "hostdev%d", idx) < 0) {
if (virAsprintf(&hostdev->info->alias, "hostdev%d", idx) < 0) {
virReportOOMError();
return -1;
}
......@@ -1419,13 +1419,13 @@ qemuAssignDevicePCISlots(virDomainDefPtr def, qemuDomainPCIAddressSetPtr addrs)
/* Host PCI devices */
for (i = 0; i < def->nhostdevs ; i++) {
if (def->hostdevs[i]->info.type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE)
if (def->hostdevs[i]->info->type != VIR_DOMAIN_DEVICE_ADDRESS_TYPE_NONE)
continue;
if (def->hostdevs[i]->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS ||
def->hostdevs[i]->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI)
continue;
if (qemuDomainPCIAddressSetNextAddr(addrs, &def->hostdevs[i]->info) < 0)
if (qemuDomainPCIAddressSetNextAddr(addrs, def->hostdevs[i]->info) < 0)
goto error;
}
......@@ -2977,14 +2977,14 @@ qemuBuildPCIHostdevDevStr(virDomainHostdevDefPtr dev, const char *configfd,
dev->source.subsys.u.pci.bus,
dev->source.subsys.u.pci.slot,
dev->source.subsys.u.pci.function);
virBufferAsprintf(&buf, ",id=%s", dev->info.alias);
virBufferAsprintf(&buf, ",id=%s", dev->info->alias);
if (configfd && *configfd)
virBufferAsprintf(&buf, ",configfd=%s", configfd);
if (dev->info.bootIndex)
virBufferAsprintf(&buf, ",bootindex=%d", dev->info.bootIndex);
if (qemuBuildDeviceAddressStr(&buf, &dev->info, qemuCaps) < 0)
if (dev->info->bootIndex)
virBufferAsprintf(&buf, ",bootindex=%d", dev->info->bootIndex);
if (qemuBuildDeviceAddressStr(&buf, dev->info, qemuCaps) < 0)
goto error;
if (qemuBuildRomStr(&buf, &dev->info, qemuCaps) < 0)
if (qemuBuildRomStr(&buf, dev->info, qemuCaps) < 0)
goto error;
if (virBufferError(&buf)) {
......@@ -3070,9 +3070,9 @@ qemuBuildUSBHostdevDevStr(virDomainHostdevDefPtr dev,
virBufferAsprintf(&buf, "usb-host,hostbus=%d,hostaddr=%d,id=%s",
dev->source.subsys.u.usb.bus,
dev->source.subsys.u.usb.device,
dev->info.alias);
dev->info->alias);
if (qemuBuildDeviceAddressStr(&buf, &dev->info, qemuCaps) < 0)
if (qemuBuildDeviceAddressStr(&buf, dev->info, qemuCaps) < 0)
goto error;
if (virBufferError(&buf)) {
......@@ -5702,7 +5702,7 @@ qemuBuildCommandLine(virConnectPtr conn,
virDomainHostdevDefPtr hostdev = def->hostdevs[i];
char *devstr;
if (hostdev->info.bootIndex) {
if (hostdev->info->bootIndex) {
if (hostdev->mode != VIR_DOMAIN_HOSTDEV_MODE_SUBSYS ||
hostdev->source.subsys.type != VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI) {
qemuReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
......@@ -6654,43 +6654,37 @@ cleanup:
static virDomainHostdevDefPtr
qemuParseCommandLinePCI(const char *val)
{
virDomainHostdevDefPtr def = NULL;
int bus = 0, slot = 0, func = 0;
const char *start;
char *end;
virDomainHostdevDefPtr def = virDomainHostdevDefAlloc();
if (!def)
goto error;
if (!STRPREFIX(val, "host=")) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("unknown PCI device syntax '%s'"), val);
VIR_FREE(def);
goto cleanup;
goto error;
}
start = val + strlen("host=");
if (virStrToLong_i(start, &end, 16, &bus) < 0 || *end != ':') {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot extract PCI device bus '%s'"), val);
VIR_FREE(def);
goto cleanup;
goto error;
}
start = end + 1;
if (virStrToLong_i(start, &end, 16, &slot) < 0 || *end != '.') {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot extract PCI device slot '%s'"), val);
VIR_FREE(def);
goto cleanup;
goto error;
}
start = end + 1;
if (virStrToLong_i(start, NULL, 16, &func) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot extract PCI device function '%s'"), val);
VIR_FREE(def);
goto cleanup;
}
if (VIR_ALLOC(def) < 0) {
virReportOOMError();
goto cleanup;
goto error;
}
def->mode = VIR_DOMAIN_HOSTDEV_MODE_SUBSYS;
......@@ -6699,9 +6693,11 @@ qemuParseCommandLinePCI(const char *val)
def->source.subsys.u.pci.bus = bus;
def->source.subsys.u.pci.slot = slot;
def->source.subsys.u.pci.function = func;
cleanup:
return def;
error:
virDomainHostdevDefFree(def);
return NULL;
}
......@@ -6711,16 +6707,18 @@ cleanup:
static virDomainHostdevDefPtr
qemuParseCommandLineUSB(const char *val)
{
virDomainHostdevDefPtr def = NULL;
virDomainHostdevDefPtr def = virDomainHostdevDefAlloc();
int first = 0, second = 0;
const char *start;
char *end;
if (!def)
goto error;
if (!STRPREFIX(val, "host:")) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("unknown USB device syntax '%s'"), val);
VIR_FREE(def);
goto cleanup;
goto error;
}
start = val + strlen("host:");
......@@ -6728,37 +6726,28 @@ qemuParseCommandLineUSB(const char *val)
if (virStrToLong_i(start, &end, 16, &first) < 0 || *end != ':') {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot extract USB device vendor '%s'"), val);
VIR_FREE(def);
goto cleanup;
goto error;
}
start = end + 1;
if (virStrToLong_i(start, NULL, 16, &second) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot extract USB device product '%s'"), val);
VIR_FREE(def);
goto cleanup;
goto error;
}
} else {
if (virStrToLong_i(start, &end, 10, &first) < 0 || *end != '.') {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot extract USB device bus '%s'"), val);
VIR_FREE(def);
goto cleanup;
goto error;
}
start = end + 1;
if (virStrToLong_i(start, NULL, 10, &second) < 0) {
qemuReportError(VIR_ERR_INTERNAL_ERROR,
_("cannot extract USB device address '%s'"), val);
VIR_FREE(def);
goto cleanup;
goto error;
}
}
if (VIR_ALLOC(def) < 0) {
virReportOOMError();
goto cleanup;
}
def->mode = VIR_DOMAIN_HOSTDEV_MODE_SUBSYS;
def->managed = 0;
def->source.subsys.type = VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_USB;
......@@ -6769,9 +6758,11 @@ qemuParseCommandLineUSB(const char *val)
def->source.subsys.u.usb.vendor = first;
def->source.subsys.u.usb.product = second;
}
cleanup:
return def;
error:
virDomainHostdevDefFree(def);
return NULL;
}
......
src/qemu/qemu_hotplug.c
浏览文件 @ 29293930
......@@ -918,14 +918,14 @@ int qemuDomainAttachHostPciDevice(struct qemud_driver *driver,
if (qemuCapsGet(priv->qemuCaps, QEMU_CAPS_DEVICE)) {
if (qemuAssignDeviceHostdevAlias(vm->def, hostdev, -1) < 0)
goto error;
if (qemuDomainPCIAddressEnsureAddr(priv->pciaddrs, &hostdev->info) < 0)
if (qemuDomainPCIAddressEnsureAddr(priv->pciaddrs, hostdev->info) < 0)
goto error;
releaseaddr = true;
if (qemuCapsGet(priv->qemuCaps, QEMU_CAPS_PCI_CONFIGFD)) {
configfd = qemuOpenPCIConfig(hostdev);
if (configfd >= 0) {
if (virAsprintf(&configfd_name, "fd-%s",
hostdev->info.alias) < 0) {
hostdev->info->alias) < 0) {
virReportOOMError();
goto error;
}
......@@ -947,7 +947,7 @@ int qemuDomainAttachHostPciDevice(struct qemud_driver *driver,
configfd, configfd_name);
qemuDomainObjExitMonitorWithDriver(driver, vm);
} else {
virDomainDevicePCIAddress guestAddr = hostdev->info.addr.pci;
virDomainDevicePCIAddress guestAddr = hostdev->info->addr.pci;
qemuDomainObjEnterMonitorWithDriver(driver, vm);
ret = qemuMonitorAddPCIHostDevice(priv->mon,
......@@ -955,8 +955,8 @@ int qemuDomainAttachHostPciDevice(struct qemud_driver *driver,
&guestAddr);
qemuDomainObjExitMonitorWithDriver(driver, vm);
hostdev->info.type = VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI;
memcpy(&hostdev->info.addr.pci, &guestAddr, sizeof(guestAddr));
hostdev->info->type = VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI;
memcpy(&hostdev->info->addr.pci, &guestAddr, sizeof(guestAddr));
}
virDomainAuditHostdev(vm, hostdev, "attach", ret == 0);
if (ret < 0)
......@@ -972,10 +972,10 @@ int qemuDomainAttachHostPciDevice(struct qemud_driver *driver,
error:
if (qemuCapsGet(priv->qemuCaps, QEMU_CAPS_DEVICE) &&
(hostdev->info.type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI) &&
(hostdev->info->type == VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI) &&
releaseaddr &&
qemuDomainPCIAddressReleaseSlot(priv->pciaddrs,
hostdev->info.addr.pci.slot) < 0)
hostdev->info->addr.pci.slot) < 0)
VIR_WARN("Unable to release PCI address on host device");
qemuDomainReAttachHostdevDevices(driver, vm->def->name, &hostdev, 1);
......@@ -2018,14 +2018,14 @@ qemuDomainDetachHostPciDevice(struct qemud_driver *driver,
return -1;
}
if (qemuIsMultiFunctionDevice(vm->def, &detach->info)) {
if (qemuIsMultiFunctionDevice(vm->def, detach->info)) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
_("cannot hot unplug multifunction PCI device: %s"),
dev->data.disk->dst);
return -1;
}
if (!virDomainDeviceAddressIsValid(&detach->info,
if (!virDomainDeviceAddressIsValid(detach->info,
VIR_DOMAIN_DEVICE_ADDRESS_TYPE_PCI)) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
"%s", _("device cannot be detached without a PCI address"));
......@@ -2034,9 +2034,9 @@ qemuDomainDetachHostPciDevice(struct qemud_driver *driver,
qemuDomainObjEnterMonitorWithDriver(driver, vm);
if (qemuCapsGet(priv->qemuCaps, QEMU_CAPS_DEVICE)) {
ret = qemuMonitorDelDevice(priv->mon, detach->info.alias);
ret = qemuMonitorDelDevice(priv->mon, detach->info->alias);
} else {
ret = qemuMonitorRemovePCIDevice(priv->mon, &detach->info.addr.pci);
ret = qemuMonitorRemovePCIDevice(priv->mon, &detach->info->addr.pci);
}
qemuDomainObjExitMonitorWithDriver(driver, vm);
virDomainAuditHostdev(vm, detach, "detach", ret == 0);
......@@ -2062,7 +2062,7 @@ qemuDomainDetachHostPciDevice(struct qemud_driver *driver,
if (qemuCapsGet(priv->qemuCaps, QEMU_CAPS_DEVICE) &&
qemuDomainPCIAddressReleaseSlot(priv->pciaddrs,
detach->info.addr.pci.slot) < 0)
detach->info->addr.pci.slot) < 0)
VIR_WARN("Unable to release PCI address on host device");
if (vm->def->nhostdevs > 1) {
......@@ -2131,7 +2131,7 @@ qemuDomainDetachHostUsbDevice(struct qemud_driver *driver,
return -1;
}
if (!detach->info.alias) {
if (!detach->info->alias) {
qemuReportError(VIR_ERR_OPERATION_FAILED,
"%s", _("device cannot be detached without a device alias"));
return -1;
......@@ -2144,7 +2144,7 @@ qemuDomainDetachHostUsbDevice(struct qemud_driver *driver,
}
qemuDomainObjEnterMonitorWithDriver(driver, vm);
ret = qemuMonitorDelDevice(priv->mon, detach->info.alias);
ret = qemuMonitorDelDevice(priv->mon, detach->info->alias);
qemuDomainObjExitMonitorWithDriver(driver, vm);
virDomainAuditHostdev(vm, detach, "detach", ret == 0);
if (ret < 0)
......
src/xenxs/xen_sxpr.c
浏览文件 @ 29293930
......@@ -1076,8 +1076,8 @@ xenParseSxprPCI(virDomainDefPtr def,
goto error;
}
if (VIR_ALLOC(dev) < 0)
goto no_memory;
if (!(dev = virDomainHostdevDefAlloc()))
goto error;
dev->mode = VIR_DOMAIN_HOSTDEV_MODE_SUBSYS;
dev->managed = 0;
......@@ -1088,6 +1088,7 @@ xenParseSxprPCI(virDomainDefPtr def,
dev->source.subsys.u.pci.function = funcID;
if (VIR_REALLOC_N(def->hostdevs, def->nhostdevs+1) < 0) {
virDomainHostdevDefFree(dev);
goto no_memory;
}
......
src/xenxs/xen_xm.c
浏览文件 @ 29293930
......@@ -815,8 +815,8 @@ xenParseXM(virConfPtr conf, int xendConfigVersion,
if (virStrToLong_i(func, NULL, 16, &funcID) < 0)
goto skippci;
if (VIR_ALLOC(hostdev) < 0)
goto no_memory;
if (!(hostdev = virDomainHostdevDefAlloc()))
goto cleanup;
hostdev->managed = 0;
hostdev->source.subsys.type = VIR_DOMAIN_HOSTDEV_SUBSYS_TYPE_PCI;
......@@ -825,8 +825,10 @@ xenParseXM(virConfPtr conf, int xendConfigVersion,
hostdev->source.subsys.u.pci.slot = slotID;
hostdev->source.subsys.u.pci.function = funcID;
if (VIR_REALLOC_N(def->hostdevs, def->nhostdevs+1) < 0)
if (VIR_REALLOC_N(def->hostdevs, def->nhostdevs+1) < 0) {
virDomainHostdevDefFree(hostdev);
goto no_memory;
}
def->hostdevs[def->nhostdevs++] = hostdev;
hostdev = NULL;
......
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