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authorMatthias Dieter Wallnöfer <mdw@samba.org>2012-05-04 08:51:41 +0200
committerAndrew Bartlett <abartlet@samba.org>2012-08-22 01:31:55 +0200
commit5f8006cb64c6537f3004e91319d071a603e4468e (patch)
tree742a3d1723372ba636ae47e8b42f39f4197ce78f
parent166a7d37f7bfc7b22163e1d38a0bb0e47c2f6622 (diff)
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s4:dsdb_sort_objectClass_attr - simplify memory context handling
Do only require the out memory context and build the temporary one in the body of the function. This greatly simplifies the callers. Signed-off-by: Andrew Bartlett <abartlet@samba.org>
-rw-r--r--source4/dsdb/pydsdb.c3
-rw-r--r--source4/dsdb/samdb/ldb_modules/objectclass.c29
-rw-r--r--source4/dsdb/schema/schema_query.c28
3 files changed, 23 insertions, 37 deletions
diff --git a/source4/dsdb/pydsdb.c b/source4/dsdb/pydsdb.c
index 39229f487f..99e239e60c 100644
--- a/source4/dsdb/pydsdb.c
+++ b/source4/dsdb/pydsdb.c
@@ -681,8 +681,7 @@ static PyObject *py_dsdb_normalise_attributes(PyObject *self, PyObject *args)
/* Normalise "objectClass" attribute if needed */
if (ldb_attr_cmp(a->lDAPDisplayName, "objectClass") == 0) {
int iret;
- iret = dsdb_sort_objectClass_attr(ldb, schema, tmp_ctx, el,
- tmp_ctx, el);
+ iret = dsdb_sort_objectClass_attr(ldb, schema, el, tmp_ctx, el);
if (iret != LDB_SUCCESS) {
PyErr_SetString(PyExc_RuntimeError, ldb_errstring(ldb));
talloc_free(tmp_ctx);
diff --git a/source4/dsdb/samdb/ldb_modules/objectclass.c b/source4/dsdb/samdb/ldb_modules/objectclass.c
index 7d34b4e8c3..074360086f 100644
--- a/source4/dsdb/samdb/ldb_modules/objectclass.c
+++ b/source4/dsdb/samdb/ldb_modules/objectclass.c
@@ -383,7 +383,6 @@ static int objectclass_do_add(struct oc_context *ac)
struct ldb_request *add_req;
struct ldb_message_element *objectclass_element, *el;
struct ldb_message *msg;
- TALLOC_CTX *mem_ctx;
const char *rdn_name = NULL;
char *value;
const struct dsdb_class *objectclass;
@@ -448,22 +447,14 @@ static int objectclass_do_add(struct oc_context *ac)
return LDB_ERR_CONSTRAINT_VIOLATION;
}
- mem_ctx = talloc_new(ac);
- if (mem_ctx == NULL) {
- return ldb_module_oom(ac->module);
- }
-
/* Now do the sorting */
- ret = dsdb_sort_objectClass_attr(ldb, ac->schema, mem_ctx,
+ ret = dsdb_sort_objectClass_attr(ldb, ac->schema,
objectclass_element, msg,
objectclass_element);
if (ret != LDB_SUCCESS) {
- talloc_free(mem_ctx);
return ret;
}
- talloc_free(mem_ctx);
-
/*
* Get the new top-most structural object class and check for
* unrelated structural classes
@@ -823,7 +814,6 @@ static int objectclass_do_mod(struct oc_context *ac)
struct ldb_message_element *oc_el_entry, *oc_el_change;
struct ldb_val *vals;
struct ldb_message *msg;
- TALLOC_CTX *mem_ctx;
const struct dsdb_class *objectclass;
unsigned int i, j, k;
bool found;
@@ -851,11 +841,6 @@ static int objectclass_do_mod(struct oc_context *ac)
msg->dn = ac->req->op.mod.message->dn;
- mem_ctx = talloc_new(ac);
- if (mem_ctx == NULL) {
- return ldb_module_oom(ac->module);
- }
-
/* We've to walk over all "objectClass" message elements */
for (k = 0; k < ac->req->op.mod.message->num_elements; k++) {
if (ldb_attr_cmp(ac->req->op.mod.message->elements[k].name,
@@ -876,7 +861,6 @@ static int objectclass_do_mod(struct oc_context *ac)
"objectclass: cannot re-add an existing objectclass: '%.*s'!",
(int)oc_el_change->values[i].length,
(const char *)oc_el_change->values[i].data);
- talloc_free(mem_ctx);
return LDB_ERR_ATTRIBUTE_OR_VALUE_EXISTS;
}
}
@@ -886,7 +870,6 @@ static int objectclass_do_mod(struct oc_context *ac)
struct ldb_val,
oc_el_entry->num_values + 1);
if (vals == NULL) {
- talloc_free(mem_ctx);
return ldb_module_oom(ac->module);
}
oc_el_entry->values = vals;
@@ -933,7 +916,6 @@ static int objectclass_do_mod(struct oc_context *ac)
"objectclass: cannot delete this objectclass: '%.*s'!",
(int)oc_el_change->values[i].length,
(const char *)oc_el_change->values[i].data);
- talloc_free(mem_ctx);
return LDB_ERR_NO_SUCH_ATTRIBUTE;
}
}
@@ -942,10 +924,9 @@ static int objectclass_do_mod(struct oc_context *ac)
}
/* Now do the sorting */
- ret = dsdb_sort_objectClass_attr(ldb, ac->schema, mem_ctx,
- oc_el_entry, msg, oc_el_entry);
+ ret = dsdb_sort_objectClass_attr(ldb, ac->schema, oc_el_entry,
+ msg, oc_el_entry);
if (ret != LDB_SUCCESS) {
- talloc_free(mem_ctx);
return ret;
}
@@ -958,7 +939,6 @@ static int objectclass_do_mod(struct oc_context *ac)
if (objectclass == NULL) {
ldb_set_errstring(ldb,
"objectclass: cannot delete all structural objectclasses!");
- talloc_free(mem_ctx);
return LDB_ERR_OBJECT_CLASS_VIOLATION;
}
@@ -967,13 +947,10 @@ static int objectclass_do_mod(struct oc_context *ac)
objectclass,
oc_el_entry);
if (ret != LDB_SUCCESS) {
- talloc_free(mem_ctx);
return ret;
}
}
- talloc_free(mem_ctx);
-
/* Now add the new object class attribute to the change message */
ret = ldb_msg_add(msg, oc_el_entry, LDB_FLAG_MOD_REPLACE);
if (ret != LDB_SUCCESS) {
diff --git a/source4/dsdb/schema/schema_query.c b/source4/dsdb/schema/schema_query.c
index ce46fa6315..013878d1f1 100644
--- a/source4/dsdb/schema/schema_query.c
+++ b/source4/dsdb/schema/schema_query.c
@@ -451,14 +451,12 @@ const struct GUID *attribute_schemaid_guid_by_lDAPDisplayName(const struct dsdb_
* into correct order and validate that all object classes specified actually
* exist in the schema.
* The output is written in an existing LDB message element
- * "out_objectclass_element" where the values will be allocated on
- * "out_mem_ctx".
+ * "out_objectclass_element" where the values will be allocated on "mem_ctx".
*/
int dsdb_sort_objectClass_attr(struct ldb_context *ldb,
const struct dsdb_schema *schema,
- TALLOC_CTX *mem_ctx,
const struct ldb_message_element *objectclass_element,
- TALLOC_CTX *out_mem_ctx,
+ TALLOC_CTX *mem_ctx,
struct ldb_message_element *out_objectclass_element)
{
unsigned int i, lowest;
@@ -469,6 +467,12 @@ int dsdb_sort_objectClass_attr(struct ldb_context *ldb,
*poss_parent = NULL, *new_parent = NULL,
*current_lowest = NULL, *current_lowest_struct = NULL;
struct ldb_message_element *el;
+ TALLOC_CTX *tmp_mem_ctx;
+
+ tmp_mem_ctx = talloc_new(mem_ctx);
+ if (tmp_mem_ctx == NULL) {
+ return ldb_oom(ldb);
+ }
/*
* DESIGN:
@@ -504,8 +508,9 @@ int dsdb_sort_objectClass_attr(struct ldb_context *ldb,
* except for 'top', which is special
*/
for (i=0; i < objectclass_element->num_values; i++) {
- current = talloc(mem_ctx, struct class_list);
+ current = talloc(tmp_mem_ctx, struct class_list);
if (!current) {
+ talloc_free(tmp_mem_ctx);
return ldb_oom(ldb);
}
current->objectclass = dsdb_class_by_lDAPDisplayName_ldb_val(schema, &objectclass_element->values[i]);
@@ -513,11 +518,13 @@ int dsdb_sort_objectClass_attr(struct ldb_context *ldb,
ldb_asprintf_errstring(ldb, "objectclass %.*s is not a valid objectClass in schema",
(int)objectclass_element->values[i].length, (const char *)objectclass_element->values[i].data);
/* This looks weird, but windows apparently returns this for invalid objectClass values */
+ talloc_free(tmp_mem_ctx);
return LDB_ERR_NO_SUCH_ATTRIBUTE;
} else if (current->objectclass->isDefunct) {
ldb_asprintf_errstring(ldb, "objectclass %.*s marked as isDefunct objectClass in schema - not valid for new objects",
(int)objectclass_element->values[i].length, (const char *)objectclass_element->values[i].data);
/* This looks weird, but windows apparently returns this for invalid objectClass values */
+ talloc_free(tmp_mem_ctx);
return LDB_ERR_NO_SUCH_ATTRIBUTE;
}
@@ -529,7 +536,7 @@ int dsdb_sort_objectClass_attr(struct ldb_context *ldb,
/* Add top here, to prevent duplicates */
- current = talloc(mem_ctx, struct class_list);
+ current = talloc(tmp_mem_ctx, struct class_list);
current->objectclass = dsdb_class_by_lDAPDisplayName(schema, "top");
DLIST_ADD_END(sorted, current, struct class_list *);
@@ -545,7 +552,7 @@ int dsdb_sort_objectClass_attr(struct ldb_context *ldb,
continue;
}
- new_parent = talloc(mem_ctx, struct class_list);
+ new_parent = talloc(tmp_mem_ctx, struct class_list);
new_parent->objectclass = dsdb_class_by_lDAPDisplayName(schema, current->objectclass->subClassOf);
DLIST_ADD_END(unsorted, new_parent, struct class_list *);
}
@@ -583,16 +590,18 @@ int dsdb_sort_objectClass_attr(struct ldb_context *ldb,
el = out_objectclass_element;
el->flags = objectclass_element->flags;
- el->name = talloc_strdup(out_mem_ctx, objectclass_element->name);
+ el->name = talloc_strdup(mem_ctx, objectclass_element->name);
if (el->name == NULL) {
+ talloc_free(tmp_mem_ctx);
return ldb_oom(ldb);
}
el->num_values = 0;
el->values = NULL;
for (current = sorted; current != NULL; current = current->next) {
- el->values = talloc_realloc(out_mem_ctx, el->values,
+ el->values = talloc_realloc(mem_ctx, el->values,
struct ldb_val, el->num_values + 1);
if (el->values == NULL) {
+ talloc_free(tmp_mem_ctx);
return ldb_oom(ldb);
}
el->values[el->num_values] = data_blob_string_const(current->objectclass->lDAPDisplayName);
@@ -600,5 +609,6 @@ int dsdb_sort_objectClass_attr(struct ldb_context *ldb,
++(el->num_values);
}
+ talloc_free(tmp_mem_ctx);
return LDB_SUCCESS;
}