Have every API that is getting a virNWFilterObj from
virNWFilterObjList grab a reference and at the same time wrap
Unlock() + Unref() calls into virNWFilterObjEndAPI().
Based-on-work-of: John Ferlan <jferlan@xxxxxxxxxx>
Signed-off-by: Michal Privoznik <mprivozn@xxxxxxxxxx>
---
src/conf/virnwfilterobj.c | 38 +++++++++++++++++++++-------------
src/conf/virnwfilterobj.h | 3 +++
src/libvirt_private.syms | 1 +
src/nwfilter/nwfilter_driver.c | 14 +++++--------
src/nwfilter/nwfilter_gentech_driver.c | 11 +++++-----
5 files changed, 38 insertions(+), 29 deletions(-)
diff --git a/src/conf/virnwfilterobj.c b/src/conf/virnwfilterobj.c
index a472ff531..6a54628b6 100644
--- a/src/conf/virnwfilterobj.c
+++ b/src/conf/virnwfilterobj.c
@@ -90,6 +90,18 @@ virNWFilterObjDispose(void *opaque)
}
+void
+virNWFilterObjEndAPI(virNWFilterObjPtr *obj)
+{
+ if (!*obj)
+ return;
+
+ virObjectUnlock(*obj);
+ virObjectUnref(*obj);
+ *obj = NULL;
+}
+
+
virNWFilterDefPtr
virNWFilterObjGetDef(virNWFilterObjPtr obj)
{
@@ -144,8 +156,7 @@ virNWFilterObjListRemove(virNWFilterObjListPtr nwfilters,
for (i = 0; i < nwfilters->count; i++) {
virObjectLock(nwfilters->objs[i]);
if (nwfilters->objs[i] == obj) {
- virObjectUnlock(nwfilters->objs[i]);
- virObjectUnref(nwfilters->objs[i]);
+ virNWFilterObjEndAPI(&nwfilters->objs[i]);
VIR_DELETE_ELEMENT(nwfilters->objs, i, nwfilters->count);
break;
@@ -168,7 +179,7 @@ virNWFilterObjListFindByUUID(virNWFilterObjListPtr nwfilters,
virObjectLock(obj);
def = obj->def;
if (!memcmp(def->uuid, uuid, VIR_UUID_BUFLEN))
- return obj;
+ return virObjectRef(obj);
virObjectUnlock(obj);
}
@@ -189,7 +200,7 @@ virNWFilterObjListFindByName(virNWFilterObjListPtr nwfilters,
virObjectLock(obj);
def = obj->def;
if (STREQ_NULLABLE(def->name, name))
- return obj;
+ return virObjectRef(obj);
virObjectUnlock(obj);
}
@@ -212,7 +223,7 @@ virNWFilterObjListFindInstantiateFilter(virNWFilterObjListPtr nwfilters,
if (virNWFilterObjWantRemoved(obj)) {
virReportError(VIR_ERR_NO_NWFILTER,
_("Filter '%s' is in use."), filtername);
- virObjectUnlock(obj);
+ virNWFilterObjEndAPI(&obj);
return NULL;
}
@@ -247,7 +258,7 @@ _virNWFilterObjListDefLoopDetect(virNWFilterObjListPtr nwfilters,
if (obj) {
rc = _virNWFilterObjListDefLoopDetect(nwfilters, obj->def,
filtername);
- virObjectUnlock(obj);
+ virNWFilterObjEndAPI(&obj);
if (rc < 0)
break;
}
@@ -329,10 +340,10 @@ virNWFilterObjListAssignDef(virNWFilterObjListPtr nwfilters,
_("filter with same UUID but different name "
"('%s') already exists"),
objdef->name);
- virObjectUnlock(obj);
+ virNWFilterObjEndAPI(&obj);
return NULL;
}
- virObjectUnlock(obj);
+ virNWFilterObjEndAPI(&obj);
} else {
if ((obj = virNWFilterObjListFindByName(nwfilters, def->name))) {
char uuidstr[VIR_UUID_STRING_BUFLEN];
@@ -342,7 +353,7 @@ virNWFilterObjListAssignDef(virNWFilterObjListPtr nwfilters,
virReportError(VIR_ERR_OPERATION_FAILED,
_("filter '%s' already exists with uuid %s"),
def->name, uuidstr);
- virObjectUnlock(obj);
+ virNWFilterObjEndAPI(&obj);
return NULL;
}
}
@@ -367,7 +378,7 @@ virNWFilterObjListAssignDef(virNWFilterObjListPtr nwfilters,
/* trigger the update on VMs referencing the filter */
if (virNWFilterTriggerVMFilterRebuild() < 0) {
obj->newDef = NULL;
- virObjectUnlock(obj);
+ virNWFilterObjEndAPI(&obj);
return NULL;
}
@@ -382,10 +393,10 @@ virNWFilterObjListAssignDef(virNWFilterObjListPtr nwfilters,
if (VIR_APPEND_ELEMENT_COPY(nwfilters->objs,
nwfilters->count, obj) < 0) {
- virObjectUnlock(obj);
- virObjectUnref(obj);
+ virNWFilterObjEndAPI(&obj);
return NULL;
}
+ virObjectRef(obj);
obj->def = def;
return obj;
@@ -558,8 +569,7 @@ virNWFilterObjListLoadAllConfigs(virNWFilterObjListPtr nwfilters,
continue;
obj = virNWFilterObjListLoadConfig(nwfilters, configDir, entry->d_name);
- if (obj)
- virObjectUnlock(obj);
+ virNWFilterObjEndAPI(&obj);
}
VIR_DIR_CLOSE(dir);
diff --git a/src/conf/virnwfilterobj.h b/src/conf/virnwfilterobj.h
index 9faba264a..0281bc5f5 100644
--- a/src/conf/virnwfilterobj.h
+++ b/src/conf/virnwfilterobj.h
@@ -41,6 +41,9 @@ struct _virNWFilterDriverState {
bool watchingFirewallD;
};
+void
+virNWFilterObjEndAPI(virNWFilterObjPtr *obj);
+
virNWFilterDefPtr
virNWFilterObjGetDef(virNWFilterObjPtr obj);
diff --git a/src/libvirt_private.syms b/src/libvirt_private.syms
index 67e3ade0f..edda56f80 100644
--- a/src/libvirt_private.syms
+++ b/src/libvirt_private.syms
@@ -1039,6 +1039,7 @@ virNodeDeviceObjListRemove;
# conf/virnwfilterobj.h
+virNWFilterObjEndAPI;
virNWFilterObjGetDef;
virNWFilterObjGetNewDef;
virNWFilterObjListAssignDef;
diff --git a/src/nwfilter/nwfilter_driver.c b/src/nwfilter/nwfilter_driver.c
index ffd603d70..c9bbae422 100644
--- a/src/nwfilter/nwfilter_driver.c
+++ b/src/nwfilter/nwfilter_driver.c
@@ -466,7 +466,7 @@ nwfilterLookupByUUID(virConnectPtr conn,
nwfilter = virGetNWFilter(conn, def->name, def->uuid);
cleanup:
- virObjectUnlock(obj);
+ virNWFilterObjEndAPI(&obj);
return nwfilter;
}
@@ -496,7 +496,7 @@ nwfilterLookupByName(virConnectPtr conn,
nwfilter = virGetNWFilter(conn, def->name, def->uuid);
cleanup:
- virObjectUnlock(obj);
+ virNWFilterObjEndAPI(&obj);
return nwfilter;
}
@@ -590,8 +590,7 @@ nwfilterDefineXML(virConnectPtr conn,
cleanup:
virNWFilterDefFree(def);
- if (obj)
- virObjectUnlock(obj);
+ virNWFilterObjEndAPI(&obj);
virNWFilterCallbackDriversUnlock();
virNWFilterUnlockFilterUpdates();
@@ -629,13 +628,10 @@ nwfilterUndefine(virNWFilterPtr nwfilter)
goto cleanup;
virNWFilterObjListRemove(driver->nwfilters, obj);
- obj = NULL;
ret = 0;
cleanup:
- if (obj)
- virObjectUnlock(obj);
-
+ virNWFilterObjEndAPI(&obj);
virNWFilterCallbackDriversUnlock();
virNWFilterUnlockFilterUpdates();
nwfilterDriverUnlock();
@@ -667,7 +663,7 @@ nwfilterGetXMLDesc(virNWFilterPtr nwfilter,
ret = virNWFilterDefFormat(def);
cleanup:
- virObjectUnlock(obj);
+ virNWFilterObjEndAPI(&obj);
return ret;
}
diff --git a/src/nwfilter/nwfilter_gentech_driver.c b/src/nwfilter/nwfilter_gentech_driver.c
index 106364c67..48d0e1769 100644
--- a/src/nwfilter/nwfilter_gentech_driver.c
+++ b/src/nwfilter/nwfilter_gentech_driver.c
@@ -316,7 +316,7 @@ virNWFilterInstReset(virNWFilterInstPtr inst)
size_t i;
for (i = 0; i < inst->nfilters; i++)
- virObjectUnlock(inst->filters[i]);
+ virNWFilterObjEndAPI(&inst->filters[i]);
VIR_FREE(inst->filters);
inst->nfilters = 0;
@@ -426,8 +426,7 @@ virNWFilterIncludeDefToRuleInst(virNWFilterDriverStatePtr driver,
if (ret < 0)
virNWFilterInstReset(inst);
virNWFilterHashTableFree(tmpvars);
- if (obj)
- virObjectUnlock(obj);
+ virNWFilterObjEndAPI(&obj);
return ret;
}
@@ -541,7 +540,7 @@ virNWFilterDetermineMissingVarsRec(virNWFilterDefPtr filter,
/* create a temporary hashmap for depth-first tree traversal */
if (!(tmpvars = virNWFilterCreateVarsFrom(inc->params, vars))) {
- virObjectUnlock(obj);
+ virNWFilterObjEndAPI(&obj);
return -1;
}
@@ -565,7 +564,7 @@ virNWFilterDetermineMissingVarsRec(virNWFilterDefPtr filter,
virNWFilterHashTableFree(tmpvars);
- virObjectUnlock(obj);
+ virNWFilterObjEndAPI(&obj);
if (rc < 0)
return -1;
}
@@ -839,7 +838,7 @@ virNWFilterInstantiateFilterUpdate(virNWFilterDriverStatePtr driver,
virNWFilterHashTableFree(vars1);
err_exit:
- virObjectUnlock(obj);
+ virNWFilterObjEndAPI(&obj);
VIR_FREE(str_ipaddr);
VIR_FREE(str_macaddr);
--
2.13.6
--
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