[libvirt] [PATCH v1 31/40] util: hostdev: use VIR_AUTOFREE instead of VIR_FREE for scalar types
Sukrit Bhatnagar
skrtbhtngr at gmail.com
Sat Jul 21 12:07:03 UTC 2018
By making use of GNU C's cleanup attribute handled by the
VIR_AUTOFREE macro for declaring scalar variables, majority
of the VIR_FREE calls 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 | 91 +++++++++++++++++----------------------------------
1 file changed, 30 insertions(+), 61 deletions(-)
diff --git a/src/util/virhostdev.c b/src/util/virhostdev.c
index f4bd19d..c4335a9 100644
--- a/src/util/virhostdev.c
+++ b/src/util/virhostdev.c
@@ -186,17 +186,14 @@ virHostdevManagerNew(void)
goto error;
}
} else {
- char *rundir = NULL;
+ VIR_AUTOFREE(char *) rundir = NULL;
mode_t old_umask;
if (!(rundir = virGetUserRuntimeDirectory()))
goto error;
- if (virAsprintf(&hostdevMgr->stateDir, "%s/hostdevmgr", rundir) < 0) {
- VIR_FREE(rundir);
+ if (virAsprintf(&hostdevMgr->stateDir, "%s/hostdevmgr", rundir) < 0)
goto error;
- }
- VIR_FREE(rundir);
old_umask = umask(077);
@@ -289,17 +286,12 @@ virHostdevPCISysfsPath(virDomainHostdevDefPtr hostdev,
static int
virHostdevIsVirtualFunction(virDomainHostdevDefPtr hostdev)
{
- char *sysfs_path = NULL;
- int ret = -1;
+ VIR_AUTOFREE(char *) sysfs_path = NULL;
if (virHostdevPCISysfsPath(hostdev, &sysfs_path) < 0)
- return ret;
+ return -1;
- ret = virPCIIsVirtualFunction(sysfs_path);
-
- VIR_FREE(sysfs_path);
-
- return ret;
+ return virPCIIsVirtualFunction(sysfs_path);
}
@@ -309,17 +301,15 @@ virHostdevNetDevice(virDomainHostdevDefPtr hostdev,
char **linkdev,
int *vf)
{
- int ret = -1;
- char *sysfs_path = NULL;
+ VIR_AUTOFREE(char *) sysfs_path = NULL;
if (virHostdevPCISysfsPath(hostdev, &sysfs_path) < 0)
- return ret;
+ return -1;
if (virPCIIsVirtualFunction(sysfs_path) == 1) {
if (virPCIGetVirtualFunctionInfo(sysfs_path, pfNetDevIdx,
- linkdev, vf) < 0) {
- goto cleanup;
- }
+ linkdev, vf) < 0)
+ return -1;
} else {
/* In practice this should never happen, since we currently
* only support assigning SRIOV VFs via <interface
@@ -327,24 +317,19 @@ virHostdevNetDevice(virDomainHostdevDefPtr hostdev,
* end up calling this function.
*/
if (virPCIGetNetName(sysfs_path, 0, NULL, linkdev) < 0)
- goto cleanup;
+ return -1;
if (!linkdev) {
virReportError(VIR_ERR_INTERNAL_ERROR,
_("The device at %s has no network device name"),
sysfs_path);
- goto cleanup;
+ return -1;
}
*vf = -1;
}
- ret = 0;
-
- cleanup:
- VIR_FREE(sysfs_path);
-
- return ret;
+ return 0;
}
@@ -443,8 +428,7 @@ static int
virHostdevSaveNetConfig(virDomainHostdevDefPtr hostdev,
const char *stateDir)
{
- int ret = -1;
- char *linkdev = NULL;
+ VIR_AUTOFREE(char *) linkdev = NULL;
int vf = -1;
if (!virHostdevIsPCINetDevice(hostdev) ||
@@ -455,19 +439,16 @@ virHostdevSaveNetConfig(virDomainHostdevDefPtr hostdev,
virReportError(VIR_ERR_CONFIG_UNSUPPORTED, "%s",
_("Interface type hostdev is currently supported on"
" SR-IOV Virtual Functions only"));
- goto cleanup;
+ return -1;
}
if (virHostdevNetDevice(hostdev, -1, &linkdev, &vf) < 0)
- goto cleanup;
+ return -1;
if (virNetDevSaveNetConfig(linkdev, vf, stateDir, true) < 0)
- goto cleanup;
+ return -1;
- ret = 0;
- cleanup:
- VIR_FREE(linkdev);
- return ret;
+ return 0;
}
@@ -486,10 +467,9 @@ static int
virHostdevSetNetConfig(virDomainHostdevDefPtr hostdev,
const unsigned char *uuid)
{
- char *linkdev = NULL;
+ VIR_AUTOFREE(char *) linkdev = NULL;
virNetDevVlanPtr vlan;
virNetDevVPortProfilePtr virtPort;
- int ret = -1;
int vf = -1;
bool port_profile_associate = true;
@@ -497,7 +477,7 @@ virHostdevSetNetConfig(virDomainHostdevDefPtr hostdev,
return 0;
if (virHostdevNetDevice(hostdev, -1, &linkdev, &vf) < 0)
- goto cleanup;
+ return -1;
vlan = virDomainNetGetActualVlan(hostdev->parent.data.net);
virtPort = virDomainNetGetActualVirtPortProfile(hostdev->parent.data.net);
@@ -507,24 +487,19 @@ virHostdevSetNetConfig(virDomainHostdevDefPtr hostdev,
_("direct setting of the vlan tag is not allowed "
"for hostdev devices using %s mode"),
virNetDevVPortTypeToString(virtPort->virtPortType));
- goto cleanup;
+ return -1;
}
if (virHostdevNetConfigVirtPortProfile(linkdev, vf, virtPort,
&hostdev->parent.data.net->mac,
- uuid, port_profile_associate) < 0) {
- goto cleanup;
- }
+ uuid, port_profile_associate) < 0)
+ return -1;
} else {
if (virNetDevSetNetConfig(linkdev, vf, &hostdev->parent.data.net->mac,
- vlan, NULL, true) < 0) {
- goto cleanup;
- }
+ vlan, NULL, true) < 0)
+ return -1;
}
- ret = 0;
- cleanup:
- VIR_FREE(linkdev);
- return ret;
+ return 0;
}
@@ -540,13 +515,13 @@ virHostdevRestoreNetConfig(virDomainHostdevDefPtr hostdev,
const char *stateDir,
const char *oldStateDir)
{
- char *linkdev = NULL;
+ VIR_AUTOFREE(char *) linkdev = NULL;
+ VIR_AUTOFREE(virMacAddrPtr) MAC = NULL;
+ VIR_AUTOFREE(virMacAddrPtr) adminMAC = NULL;
virNetDevVPortProfilePtr virtPort;
int ret = -1;
int vf = -1;
bool port_profile_associate = false;
- virMacAddrPtr MAC = NULL;
- virMacAddrPtr adminMAC = NULL;
virNetDevVlanPtr vlan = NULL;
@@ -656,9 +631,6 @@ virHostdevRestoreNetConfig(virDomainHostdevDefPtr hostdev,
}
cleanup:
- VIR_FREE(linkdev);
- VIR_FREE(MAC);
- VIR_FREE(adminMAC);
virNetDevVlanFree(vlan);
return ret;
@@ -763,8 +735,8 @@ virHostdevPreparePCIDevices(virHostdevManagerPtr mgr,
mgr->inactivePCIHostdevs) < 0)
goto reattachdevs;
} else {
- char *driverPath;
- char *driverName;
+ VIR_AUTOFREE(char *) driverPath = NULL;
+ VIR_AUTOFREE(char *) driverName = NULL;
int stub;
/* Unmanaged devices should already have been marked as
@@ -790,9 +762,6 @@ virHostdevPreparePCIDevices(virHostdevManagerPtr mgr,
stub = virPCIStubDriverTypeFromString(driverName);
- VIR_FREE(driverPath);
- VIR_FREE(driverName);
-
if (stub > VIR_PCI_STUB_DRIVER_NONE &&
stub < VIR_PCI_STUB_DRIVER_LAST) {
--
1.8.3.1
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