[libvirt] [PATCH v2 13/32] storage: Use VIR_AUTOFREE for storage driver
John Ferlan
jferlan at redhat.com
Fri Feb 8 18:37:07 UTC 2019
Let's make use of the auto __cleanup capabilities cleaning up any
now unnecessary goto paths.
Signed-off-by: John Ferlan <jferlan at redhat.com>
Reviewed-by: Erik Skultety <eskultet at redhat.com>
---
src/storage/storage_driver.c | 70 ++++++++++++------------------------
1 file changed, 23 insertions(+), 47 deletions(-)
diff --git a/src/storage/storage_driver.c b/src/storage/storage_driver.c
index a71a16add1..34634e97d9 100644
--- a/src/storage/storage_driver.c
+++ b/src/storage/storage_driver.c
@@ -122,7 +122,7 @@ storagePoolUpdateStateCallback(virStoragePoolObjPtr obj,
virStoragePoolDefPtr def = virStoragePoolObjGetDef(obj);
bool active = false;
virStorageBackendPtr backend;
- char *stateFile;
+ VIR_AUTOFREE(char *) stateFile = NULL;
if ((backend = virStorageBackendForType(def->type)) == NULL) {
virReportError(VIR_ERR_INTERNAL_ERROR,
@@ -164,8 +164,6 @@ storagePoolUpdateStateCallback(virStoragePoolObjPtr obj,
if (!virStoragePoolObjIsActive(obj))
virStoragePoolUpdateInactive(&obj);
- VIR_FREE(stateFile);
-
return;
}
@@ -203,7 +201,7 @@ storageDriverAutostartCallback(virStoragePoolObjPtr obj,
}
if (started) {
- char *stateFile;
+ VIR_AUTOFREE(char *) stateFile = NULL;
virStoragePoolObjClearVols(obj);
stateFile = virFileBuildPath(driver->stateDir, def->name, ".xml");
@@ -217,7 +215,6 @@ storageDriverAutostartCallback(virStoragePoolObjPtr obj,
} else {
virStoragePoolObjSetActive(obj, true);
}
- VIR_FREE(stateFile);
}
}
@@ -240,16 +237,15 @@ storageStateInitialize(bool privileged,
virStateInhibitCallback callback ATTRIBUTE_UNUSED,
void *opaque ATTRIBUTE_UNUSED)
{
- int ret = -1;
- char *configdir = NULL;
- char *rundir = NULL;
+ VIR_AUTOFREE(char *) configdir = NULL;
+ VIR_AUTOFREE(char *) rundir = NULL;
if (VIR_ALLOC(driver) < 0)
- return ret;
+ return -1;
if (virMutexInit(&driver->lock) < 0) {
VIR_FREE(driver);
- return ret;
+ return -1;
}
storageDriverLock();
@@ -302,16 +298,12 @@ storageStateInitialize(bool privileged,
storageDriverUnlock();
- ret = 0;
- cleanup:
- VIR_FREE(configdir);
- VIR_FREE(rundir);
- return ret;
+ return 0;
error:
storageDriverUnlock();
storageStateCleanup();
- goto cleanup;
+ return -1;
}
/**
@@ -695,9 +687,9 @@ storagePoolCreateXML(virConnectPtr conn,
virStoragePoolPtr pool = NULL;
virStorageBackendPtr backend;
virObjectEventPtr event = NULL;
- char *stateFile = NULL;
unsigned int build_flags = 0;
VIR_AUTOPTR(virStoragePoolDef) newDef = NULL;
+ VIR_AUTOFREE(char *) stateFile = NULL;
virCheckFlags(VIR_STORAGE_POOL_CREATE_WITH_BUILD |
VIR_STORAGE_POOL_CREATE_WITH_BUILD_OVERWRITE |
@@ -761,7 +753,6 @@ storagePoolCreateXML(virConnectPtr conn,
pool = virGetStoragePool(conn, def->name, def->uuid, NULL, NULL);
cleanup:
- VIR_FREE(stateFile);
virObjectEventStateQueue(driver->storageEventState, event);
virStoragePoolObjEndAPI(&obj);
return pool;
@@ -892,8 +883,8 @@ storagePoolCreate(virStoragePoolPtr pool,
virStorageBackendPtr backend;
virObjectEventPtr event = NULL;
int ret = -1;
- char *stateFile = NULL;
unsigned int build_flags = 0;
+ VIR_AUTOFREE(char *) stateFile = NULL;
virCheckFlags(VIR_STORAGE_POOL_CREATE_WITH_BUILD |
VIR_STORAGE_POOL_CREATE_WITH_BUILD_OVERWRITE |
@@ -955,7 +946,6 @@ storagePoolCreate(virStoragePoolPtr pool,
ret = 0;
cleanup:
- VIR_FREE(stateFile);
virObjectEventStateQueue(driver->storageEventState, event);
virStoragePoolObjEndAPI(&obj);
return ret;
@@ -1013,8 +1003,8 @@ storagePoolDestroy(virStoragePoolPtr pool)
virStoragePoolDefPtr def;
virStorageBackendPtr backend;
virObjectEventPtr event = NULL;
- char *stateFile = NULL;
int ret = -1;
+ VIR_AUTOFREE(char *) stateFile = NULL;
if (!(obj = storagePoolObjFindByUUID(pool->uuid, pool->name)))
goto cleanup;
@@ -1045,7 +1035,6 @@ storagePoolDestroy(virStoragePoolPtr pool)
goto cleanup;
unlink(stateFile);
- VIR_FREE(stateFile);
if (backend->stopPool &&
backend->stopPool(obj) < 0)
@@ -1078,8 +1067,8 @@ storagePoolDelete(virStoragePoolPtr pool,
virStoragePoolDefPtr def;
virStorageBackendPtr backend;
virObjectEventPtr event = NULL;
- char *stateFile = NULL;
int ret = -1;
+ VIR_AUTOFREE(char *) stateFile = NULL;
if (!(obj = virStoragePoolObjFromStoragePool(pool)))
return -1;
@@ -1111,7 +1100,6 @@ storagePoolDelete(virStoragePoolPtr pool,
goto cleanup;
unlink(stateFile);
- VIR_FREE(stateFile);
if (!backend->deletePool) {
virReportError(VIR_ERR_NO_SUPPORT,
@@ -1172,10 +1160,10 @@ storagePoolRefresh(virStoragePoolPtr pool,
virStoragePoolObjClearVols(obj);
if (backend->refreshPool(obj) < 0) {
- char *stateFile = virFileBuildPath(driver->stateDir, def->name, ".xml");
+ VIR_AUTOFREE(char *) stateFile = NULL;
+ stateFile = virFileBuildPath(driver->stateDir, def->name, ".xml");
storagePoolRefreshFailCleanup(backend, obj, stateFile);
- VIR_FREE(stateFile);
event = virStoragePoolEventLifecycleNew(def->name,
def->uuid,
@@ -1540,7 +1528,7 @@ storageVolLookupByPathCallback(virStoragePoolObjPtr obj,
{
struct storageVolLookupData *data = (struct storageVolLookupData *)opaque;
virStoragePoolDefPtr def;
- char *stable_path = NULL;
+ VIR_AUTOFREE(char *) stable_path = NULL;
if (!virStoragePoolObjIsActive(obj))
return false;
@@ -1579,7 +1567,6 @@ storageVolLookupByPathCallback(virStoragePoolObjPtr obj,
}
data->voldef = virStorageVolDefFindByPath(obj, stable_path);
- VIR_FREE(stable_path);
return !!data->voldef;
}
@@ -1649,7 +1636,7 @@ storagePoolLookupByTargetPath(virConnectPtr conn,
virStoragePoolObjPtr obj;
virStoragePoolDefPtr def;
virStoragePoolPtr pool = NULL;
- char *cleanpath;
+ VIR_AUTOFREE(char *) cleanpath = NULL;
cleanpath = virFileSanitizePath(path);
if (!cleanpath)
@@ -1660,7 +1647,7 @@ storagePoolLookupByTargetPath(virConnectPtr conn,
cleanpath))) {
def = virStoragePoolObjGetDef(obj);
if (virStoragePoolLookupByTargetPathEnsureACL(conn, def) < 0)
- goto cleanup;
+ return NULL;
pool = virGetStoragePool(conn, def->name, def->uuid, NULL, NULL);
virStoragePoolObjEndAPI(&obj);
@@ -1678,8 +1665,6 @@ storagePoolLookupByTargetPath(virConnectPtr conn,
}
}
- cleanup:
- VIR_FREE(cleanpath);
return pool;
}
@@ -2206,40 +2191,31 @@ virStorageVolPoolRefreshDataFree(void *opaque)
static int
virStorageBackendPloopRestoreDesc(char *path)
{
- int ret = -1;
- char *refresh_tool = NULL;
- char *desc = NULL;
VIR_AUTOPTR(virCommand) cmd = NULL;
+ VIR_AUTOFREE(char *) refresh_tool = NULL;
+ VIR_AUTOFREE(char *) desc = NULL;
if (virAsprintf(&desc, "%s/DiskDescriptor.xml", path) < 0)
- return ret;
+ return -1;
if (virFileRemove(desc, 0, 0) < 0) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("refresh ploop failed:"
" unable to delete DiskDescriptor.xml"));
- goto cleanup;
+ return -1;
}
refresh_tool = virFindFileInPath("ploop");
if (!refresh_tool) {
virReportError(VIR_ERR_INTERNAL_ERROR, "%s",
_("unable to find ploop, please install ploop tools"));
- goto cleanup;
+ return -1;
}
cmd = virCommandNewArgList(refresh_tool, "restore-descriptor",
path, NULL);
virCommandAddArgFormat(cmd, "%s/root.hds", path);
- if (virCommandRun(cmd, NULL) < 0)
- goto cleanup;
-
- ret = 0;
-
- cleanup:
- VIR_FREE(refresh_tool);
- VIR_FREE(desc);
- return ret;
+ return virCommandRun(cmd, NULL);
}
--
2.20.1
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