[libvirt] [PATCH v1 32/40] util: hostdev: use VIR_AUTOPTR for aggregate types
Sukrit Bhatnagar
skrtbhtngr at gmail.com
Sat Jul 21 12:07:04 UTC 2018
By making use of GNU C's cleanup attribute handled by the
VIR_AUTOPTR macro for declaring aggregate pointer variables,
majority of the calls to *Free functions can be dropped, which
in turn leads to getting rid of most of our cleanup sections.
Signed-off-by: Sukrit Bhatnagar <skrtbhtngr at gmail.com>
---
src/util/virhostdev.c | 71 ++++++++++++++++++---------------------------------
1 file changed, 25 insertions(+), 46 deletions(-)
diff --git a/src/util/virhostdev.c b/src/util/virhostdev.c
index c4335a9..b5315b1 100644
--- a/src/util/virhostdev.c
+++ b/src/util/virhostdev.c
@@ -518,11 +518,10 @@ virHostdevRestoreNetConfig(virDomainHostdevDefPtr hostdev,
VIR_AUTOFREE(char *) linkdev = NULL;
VIR_AUTOFREE(virMacAddrPtr) MAC = NULL;
VIR_AUTOFREE(virMacAddrPtr) adminMAC = NULL;
+ VIR_AUTOPTR(virNetDevVlan) vlan = NULL;
virNetDevVPortProfilePtr virtPort;
- int ret = -1;
int vf = -1;
bool port_profile_associate = false;
- virNetDevVlanPtr vlan = NULL;
/* This is only needed for PCI devices that have been defined
@@ -535,16 +534,16 @@ virHostdevRestoreNetConfig(virDomainHostdevDefPtr hostdev,
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("Interface type hostdev is currently supported on"
" SR-IOV Virtual Functions only"));
- return ret;
+ return -1;
}
if (virHostdevNetDevice(hostdev, 0, &linkdev, &vf) < 0)
- return ret;
+ return -1;
virtPort = virDomainNetGetActualVirtPortProfile(
hostdev->parent.data.net);
if (virtPort) {
- ret = virHostdevNetConfigVirtPortProfile(linkdev, vf, virtPort,
+ return virHostdevNetConfigVirtPortProfile(linkdev, vf, virtPort,
&hostdev->parent.data.net->mac,
NULL,
port_profile_associate);
@@ -574,7 +573,7 @@ virHostdevRestoreNetConfig(virDomainHostdevDefPtr hostdev,
/* 1) standard location */
if (virNetDevReadNetConfig(linkdev, vf, stateDir,
&adminMAC, &vlan, &MAC) < 0) {
- goto cleanup;
+ return -1;
}
/* 2) "old" (pre-1.2.3 circa 2014) location - whenever we get
@@ -585,7 +584,7 @@ virHostdevRestoreNetConfig(virDomainHostdevDefPtr hostdev,
if (!(adminMAC || vlan || MAC) && oldStateDir &&
virNetDevReadNetConfig(linkdev, vf, oldStateDir,
&adminMAC, &vlan, &MAC) < 0) {
- goto cleanup;
+ return -1;
}
/* 3) try using the PF's "port 2" netdev as the name of the
@@ -597,7 +596,7 @@ virHostdevRestoreNetConfig(virDomainHostdevDefPtr hostdev,
if (virHostdevNetDevice(hostdev, 1, &linkdev, &vf) < 0 ||
virNetDevReadNetConfig(linkdev, vf, stateDir,
&adminMAC, &vlan, &MAC) < 0) {
- goto cleanup;
+ return -1;
}
}
@@ -627,13 +626,8 @@ virHostdevRestoreNetConfig(virDomainHostdevDefPtr hostdev,
ignore_value(virNetDevSetNetConfig(linkdev, vf,
adminMAC, vlan, MAC, true));
- ret = 0;
+ return 0;
}
-
- cleanup:
- virNetDevVlanFree(vlan);
-
- return ret;
}
int
@@ -1117,7 +1111,6 @@ virHostdevUpdateActivePCIDevices(virHostdevManagerPtr mgr,
const char *dom_name)
{
virDomainHostdevDefPtr hostdev = NULL;
- virPCIDevicePtr actual = NULL;
size_t i;
int ret = -1;
@@ -1128,6 +1121,7 @@ virHostdevUpdateActivePCIDevices(virHostdevManagerPtr mgr,
virObjectLock(mgr->inactivePCIHostdevs);
for (i = 0; i < nhostdevs; i++) {
+ VIR_AUTOPTR(virPCIDevice) actual = NULL;
virDomainHostdevSubsysPCIPtr pcisrc;
hostdev = hostdevs[i];
pcisrc = &hostdev->source.subsys.u.pci;
@@ -1165,7 +1159,6 @@ virHostdevUpdateActivePCIDevices(virHostdevManagerPtr mgr,
ret = 0;
cleanup:
- virPCIDeviceFree(actual);
virObjectUnlock(mgr->activePCIHostdevs);
virObjectUnlock(mgr->inactivePCIHostdevs);
return ret;
@@ -1226,31 +1219,27 @@ virHostdevUpdateActiveSCSIHostDevices(virHostdevManagerPtr mgr,
virDomainHostdevSubsysSCSIHostPtr scsihostsrc = &scsisrc->u.host;
virSCSIDevicePtr scsi = NULL;
virSCSIDevicePtr tmp = NULL;
- int ret = -1;
if (!(scsi = virSCSIDeviceNew(NULL,
scsihostsrc->adapter, scsihostsrc->bus,
scsihostsrc->target, scsihostsrc->unit,
hostdev->readonly, hostdev->shareable)))
- goto cleanup;
+ return -1;
if ((tmp = virSCSIDeviceListFind(mgr->activeSCSIHostdevs, scsi))) {
if (virSCSIDeviceSetUsedBy(tmp, drv_name, dom_name) < 0) {
virSCSIDeviceFree(scsi);
- goto cleanup;
+ return -1;
}
virSCSIDeviceFree(scsi);
} else {
if (virSCSIDeviceSetUsedBy(scsi, drv_name, dom_name) < 0 ||
virSCSIDeviceListAdd(mgr->activeSCSIHostdevs, scsi) < 0) {
virSCSIDeviceFree(scsi);
- goto cleanup;
+ return -1;
}
}
- ret = 0;
-
- cleanup:
- return ret;
+ return 0;
}
int
@@ -1301,7 +1290,7 @@ virHostdevUpdateActiveMediatedDevices(virHostdevManagerPtr mgr,
{
int ret = -1;
size_t i;
- virMediatedDevicePtr mdev = NULL;
+ VIR_AUTOPTR(virMediatedDevice) mdev = NULL;
if (nhostdevs == 0)
return 0;
@@ -1327,7 +1316,6 @@ virHostdevUpdateActiveMediatedDevices(virHostdevManagerPtr mgr,
ret = 0;
cleanup:
- virMediatedDeviceFree(mdev);
virObjectUnlock(mgr->activeMediatedHostdevs);
return ret;
}
@@ -1560,29 +1548,25 @@ virHostdevPrepareSCSIHostDevices(virDomainHostdevDefPtr hostdev,
{
virDomainHostdevSubsysSCSIHostPtr scsihostsrc = &scsisrc->u.host;
virSCSIDevicePtr scsi;
- int ret = -1;
if (hostdev->managed) {
virReportError(VIR_ERR_XML_ERROR, "%s",
_("SCSI host device doesn't support managed mode"));
- goto cleanup;
+ return -1;
}
if (!(scsi = virSCSIDeviceNew(NULL,
scsihostsrc->adapter, scsihostsrc->bus,
scsihostsrc->target, scsihostsrc->unit,
hostdev->readonly, hostdev->shareable)))
- goto cleanup;
+ return -1;
if (virSCSIDeviceListAdd(list, scsi) < 0) {
virSCSIDeviceFree(scsi);
- goto cleanup;
+ return -1;
}
- ret = 0;
-
- cleanup:
- return ret;
+ return 0;
}
int
@@ -1859,7 +1843,8 @@ virHostdevReAttachUSBDevices(virHostdevManagerPtr mgr,
for (i = 0; i < nhostdevs; i++) {
virDomainHostdevDefPtr hostdev = hostdevs[i];
virDomainHostdevSubsysUSBPtr usbsrc = &hostdev->source.subsys.u.usb;
- virUSBDevicePtr usb, tmp;
+ VIR_AUTOPTR(virUSBDevice) usb = NULL;
+ virUSBDevicePtr tmp;
const char *usedby_drvname;
const char *usedby_domname;
@@ -1883,7 +1868,6 @@ virHostdevReAttachUSBDevices(virHostdevManagerPtr mgr,
* the list which were taken by @name */
tmp = virUSBDeviceListFind(mgr->activeUSBHostdevs, usb);
- virUSBDeviceFree(usb);
if (!tmp) {
VIR_WARN("Unable to find device %03d.%03d "
@@ -1911,7 +1895,7 @@ virHostdevReAttachSCSIHostDevices(virHostdevManagerPtr mgr,
const char *dom_name)
{
virDomainHostdevSubsysSCSIHostPtr scsihostsrc = &scsisrc->u.host;
- virSCSIDevicePtr scsi;
+ VIR_AUTOPTR(virSCSIDevice) scsi = NULL;
virSCSIDevicePtr tmp;
if (!(scsi = virSCSIDeviceNew(NULL,
@@ -1932,7 +1916,6 @@ virHostdevReAttachSCSIHostDevices(virHostdevManagerPtr mgr,
"in list of active SCSI devices",
scsihostsrc->adapter, scsihostsrc->bus,
scsihostsrc->target, scsihostsrc->unit);
- virSCSIDeviceFree(scsi);
return;
}
@@ -1942,7 +1925,6 @@ virHostdevReAttachSCSIHostDevices(virHostdevManagerPtr mgr,
virSCSIDeviceListDel(mgr->activeSCSIHostdevs, tmp,
drv_name, dom_name);
- virSCSIDeviceFree(scsi);
}
void
@@ -1982,14 +1964,14 @@ virHostdevReAttachSCSIVHostDevices(virHostdevManagerPtr mgr,
int nhostdevs)
{
size_t i;
- virSCSIVHostDevicePtr host, tmp;
-
if (!nhostdevs)
return;
virObjectLock(mgr->activeSCSIVHostHostdevs);
for (i = 0; i < nhostdevs; i++) {
+ VIR_AUTOPTR(virSCSIVHostDevice) host = NULL;
+ virSCSIVHostDevicePtr tmp;
virDomainHostdevDefPtr hostdev = hostdevs[i];
virDomainHostdevSubsysSCSIVHostPtr hostsrc = &hostdev->source.subsys.u.scsi_host;
const char *usedby_drvname;
@@ -2017,7 +1999,6 @@ virHostdevReAttachSCSIVHostDevices(virHostdevManagerPtr mgr,
VIR_WARN("Unable to find device %s "
"in list of active SCSI_host devices",
hostsrc->wwpn);
- virSCSIVHostDeviceFree(host);
virObjectUnlock(mgr->activeSCSIVHostHostdevs);
return;
}
@@ -2031,8 +2012,6 @@ virHostdevReAttachSCSIVHostDevices(virHostdevManagerPtr mgr,
virSCSIVHostDeviceListDel(mgr->activeSCSIVHostHostdevs, tmp);
}
-
- virSCSIVHostDeviceFree(host);
}
virObjectUnlock(mgr->activeSCSIVHostHostdevs);
}
@@ -2060,7 +2039,8 @@ virHostdevReAttachMediatedDevices(virHostdevManagerPtr mgr,
virObjectLock(mgr->activeMediatedHostdevs);
for (i = 0; i < nhostdevs; i++) {
- virMediatedDevicePtr mdev, tmp;
+ VIR_AUTOPTR(virMediatedDevice) mdev = NULL;
+ virMediatedDevicePtr tmp;
virDomainHostdevSubsysMediatedDevPtr mdevsrc;
virDomainHostdevDefPtr hostdev = hostdevs[i];
@@ -2076,7 +2056,6 @@ virHostdevReAttachMediatedDevices(virHostdevManagerPtr mgr,
/* Remove from the list only mdevs assigned to @drv_name/@dom_name */
tmp = virMediatedDeviceListFind(mgr->activeMediatedHostdevs, mdev);
- virMediatedDeviceFree(mdev);
/* skip inactive devices */
if (!tmp)
--
1.8.3.1
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