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list: Add helpers for listing node devices

Browse Source 
src/conf/node_device_conf.h:
  * New macro VIR_CONNECT_LIST_NODE_DEVICES_FILTERS_CAP
  * Declare virNodeDeviceList

src/conf/node_device_conf.c:
  * New helpers virNodeDeviceCapMatch, virNodeDeviceMatch.
    virNodeDeviceCapMatch looks up the list of all the caps the device
    support, to see if the device support the cap type.
  * Implement virNodeDeviceList

src/libvirt_private.syms:
  * Export virNodeDeviceList
  * Export virNodeDevCapTypeFromString
This commit is contained in:
Osier Yang 2012-09-05 13:34:09 +08:00
parent 4230b6c102
commit 324bf8bfdc
3 changed files with 120 additions and 0 deletions
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103
src/conf/node_device_conf.c
View File

@ -1432,3 +1432,106 @@ void virNodeDeviceObjUnlock(virNodeDeviceObjPtr obj)
{
virMutexUnlock(&obj->lock);
}
static bool
virNodeDeviceCapMatch(virNodeDeviceObjPtr devobj,
int type)
{
virNodeDevCapsDefPtr cap = NULL;
for (cap = devobj->def->caps; cap; cap = cap->next) {
if (type == cap->type)
return true;
}
return false;
}
#define MATCH(FLAG) (flags & (FLAG))
static bool
virNodeDeviceMatch(virNodeDeviceObjPtr devobj,
unsigned int flags)
{
/* filter by cap type */
if (MATCH(VIR_CONNECT_LIST_NODE_DEVICES_FILTERS_CAP)) {
if (!((MATCH(VIR_CONNECT_LIST_NODE_DEVICES_CAP_SYSTEM) &&
virNodeDeviceCapMatch(devobj, VIR_NODE_DEV_CAP_SYSTEM)) ||
(MATCH(VIR_CONNECT_LIST_NODE_DEVICES_CAP_PCI_DEV) &&
virNodeDeviceCapMatch(devobj, VIR_NODE_DEV_CAP_PCI_DEV)) ||
(MATCH(VIR_CONNECT_LIST_NODE_DEVICES_CAP_USB_DEV) &&
virNodeDeviceCapMatch(devobj, VIR_NODE_DEV_CAP_USB_DEV)) ||
(MATCH(VIR_CONNECT_LIST_NODE_DEVICES_CAP_USB_INTERFACE) &&
virNodeDeviceCapMatch(devobj, VIR_NODE_DEV_CAP_USB_INTERFACE)) ||
(MATCH(VIR_CONNECT_LIST_NODE_DEVICES_CAP_NET) &&
virNodeDeviceCapMatch(devobj, VIR_NODE_DEV_CAP_NET)) ||
(MATCH(VIR_CONNECT_LIST_NODE_DEVICES_CAP_SCSI_HOST) &&
virNodeDeviceCapMatch(devobj, VIR_NODE_DEV_CAP_SCSI_HOST)) ||
(MATCH(VIR_CONNECT_LIST_NODE_DEVICES_CAP_SCSI_TARGET) &&
virNodeDeviceCapMatch(devobj, VIR_NODE_DEV_CAP_SCSI_TARGET)) ||
(MATCH(VIR_CONNECT_LIST_NODE_DEVICES_CAP_SCSI) &&
virNodeDeviceCapMatch(devobj, VIR_NODE_DEV_CAP_SCSI)) ||
(MATCH(VIR_CONNECT_LIST_NODE_DEVICES_CAP_STORAGE) &&
virNodeDeviceCapMatch(devobj, VIR_NODE_DEV_CAP_STORAGE))))
return false;
}
return true;
}
#undef MATCH
int
virNodeDeviceList(virConnectPtr conn,
virNodeDeviceObjList devobjs,
virNodeDevicePtr **devices,
unsigned int flags)
{
virNodeDevicePtr *tmp_devices = NULL;
virNodeDevicePtr device = NULL;
int ndevices = 0;
int ret = -1;
int i;
if (devices) {
if (VIR_ALLOC_N(tmp_devices, devobjs.count + 1) < 0) {
virReportOOMError();
goto cleanup;
}
}
for (i = 0; i < devobjs.count; i++) {
virNodeDeviceObjPtr devobj = devobjs.objs[i];
virNodeDeviceObjLock(devobj);
if (virNodeDeviceMatch(devobj, flags)) {
if (devices) {
if (!(device = virGetNodeDevice(conn,
devobj->def->name))) {
virNodeDeviceObjUnlock(devobj);
goto cleanup;
}
tmp_devices[ndevices] = device;
}
ndevices++;
}
virNodeDeviceObjUnlock(devobj);
}
if (tmp_devices) {
/* trim the array to the final size */
ignore_value(VIR_REALLOC_N(tmp_devices, ndevices + 1));
*devices = tmp_devices;
tmp_devices = NULL;
}
ret = ndevices;
cleanup:
if (tmp_devices) {
for (i = 0; i < ndevices; i++) {
if (tmp_devices[i])
virNodeDeviceFree(tmp_devices[i]);
}
}
VIR_FREE(tmp_devices);
return ret;
}

16
src/conf/node_device_conf.h
View File

@ -261,4 +261,20 @@ void virNodeDevCapsDefFree(virNodeDevCapsDefPtr caps);
void virNodeDeviceObjLock(virNodeDeviceObjPtr obj);
void virNodeDeviceObjUnlock(virNodeDeviceObjPtr obj);
# define VIR_CONNECT_LIST_NODE_DEVICES_FILTERS_CAP \
(VIR_CONNECT_LIST_NODE_DEVICES_CAP_SYSTEM | \
VIR_CONNECT_LIST_NODE_DEVICES_CAP_PCI_DEV | \
VIR_CONNECT_LIST_NODE_DEVICES_CAP_USB_DEV | \
VIR_CONNECT_LIST_NODE_DEVICES_CAP_USB_INTERFACE | \
VIR_CONNECT_LIST_NODE_DEVICES_CAP_NET | \
VIR_CONNECT_LIST_NODE_DEVICES_CAP_SCSI_HOST | \
VIR_CONNECT_LIST_NODE_DEVICES_CAP_SCSI_TARGET | \
VIR_CONNECT_LIST_NODE_DEVICES_CAP_SCSI | \
VIR_CONNECT_LIST_NODE_DEVICES_CAP_STORAGE)
int virNodeDeviceList(virConnectPtr conn,
virNodeDeviceObjList devobjs,
virNodeDevicePtr **devices,
unsigned int flags);
#endif /* __VIR_NODE_DEVICE_CONF_H__ */

1
src/libvirt_private.syms
View File

@ -868,6 +868,7 @@ virNodeDeviceFindBySysfsPath;
virNodeDeviceGetParentHost;
virNodeDeviceGetWWNs;
virNodeDeviceHasCap;
virNodeDeviceList;
virNodeDeviceObjListFree;
virNodeDeviceObjLock;
virNodeDeviceObjRemove;