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authorAndrew Bartlett <abartlet@samba.org>2012-08-14 16:08:47 +1000
committerAndrew Bartlett <abartlet@samba.org>2012-08-14 10:05:14 +0200
commit956678685325a79a315f4ef19c0d834fd1747e4c (patch)
tree62b89848fbf552187a07d1d520702112f3b4ac45
parent0f2a87b547be43b4764c48350fd03ff22e086806 (diff)
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s4-dsdb: Add mem_ctx argument to samdb_ntds_settings_dn
As this value is calculated new each time, we need to give it a context to live on. If the value is the forced value during provision, a reference is taken. This was responsible for the memory leak in the replication process. In the example I was given, this DN appeared in memory 13596 times! Andrew Bartlett Autobuild-User(master): Andrew Bartlett <abartlet@samba.org> Autobuild-Date(master): Tue Aug 14 10:05:14 CEST 2012 on sn-devel-104
-rw-r--r--source4/dsdb/common/util.c28
-rw-r--r--source4/dsdb/kcc/kcc_connection.c4
-rw-r--r--source4/dsdb/kcc/kcc_periodic.c2
-rw-r--r--source4/dsdb/kcc/kcc_topology.c2
-rw-r--r--source4/dsdb/repl/drepl_fsmo.c8
-rw-r--r--source4/dsdb/repl/drepl_partitions.c2
-rw-r--r--source4/dsdb/repl/drepl_ridalloc.c4
-rw-r--r--source4/dsdb/samdb/ldb_modules/objectclass.c2
-rw-r--r--source4/dsdb/samdb/ldb_modules/ridalloc.c4
-rw-r--r--source4/dsdb/samdb/ldb_modules/rootdse.c4
-rw-r--r--source4/dsdb/samdb/ldb_modules/util.c7
-rw-r--r--source4/dsdb/schema/schema_init.c2
-rw-r--r--source4/rpc_server/drsuapi/dcesrv_drsuapi.c2
-rw-r--r--source4/rpc_server/drsuapi/getncchanges.c4
14 files changed, 45 insertions, 30 deletions
diff --git a/source4/dsdb/common/util.c b/source4/dsdb/common/util.c
index dca7a4409e..251e17759b 100644
--- a/source4/dsdb/common/util.c
+++ b/source4/dsdb/common/util.c
@@ -1241,7 +1241,7 @@ failed:
/*
work out the ntds settings dn for the current open ldb
*/
-struct ldb_dn *samdb_ntds_settings_dn(struct ldb_context *ldb)
+struct ldb_dn *samdb_ntds_settings_dn(struct ldb_context *ldb, TALLOC_CTX *mem_ctx)
{
TALLOC_CTX *tmp_ctx;
const char *root_attrs[] = { "dsServiceName", NULL };
@@ -1252,10 +1252,10 @@ struct ldb_dn *samdb_ntds_settings_dn(struct ldb_context *ldb)
/* see if we have a cached copy */
settings_dn = (struct ldb_dn *)ldb_get_opaque(ldb, "forced.ntds_settings_dn");
if (settings_dn) {
- return settings_dn;
+ return talloc_reference(mem_ctx, settings_dn);
}
- tmp_ctx = talloc_new(ldb);
+ tmp_ctx = talloc_new(mem_ctx);
if (tmp_ctx == NULL) {
goto failed;
}
@@ -1277,7 +1277,7 @@ struct ldb_dn *samdb_ntds_settings_dn(struct ldb_context *ldb)
* we could not handle server renames at runtime. Only
* provision sets up forced.ntds_settings_dn */
- talloc_steal(ldb, settings_dn);
+ talloc_steal(mem_ctx, settings_dn);
talloc_free(tmp_ctx);
return settings_dn;
@@ -1310,7 +1310,7 @@ const struct GUID *samdb_ntds_invocation_id(struct ldb_context *ldb)
goto failed;
}
- ret = ldb_search(ldb, tmp_ctx, &res, samdb_ntds_settings_dn(ldb), LDB_SCOPE_BASE, attrs, NULL);
+ ret = ldb_search(ldb, tmp_ctx, &res, samdb_ntds_settings_dn(ldb, tmp_ctx), LDB_SCOPE_BASE, attrs, NULL);
if (ret) {
goto failed;
}
@@ -1403,7 +1403,7 @@ const struct GUID *samdb_ntds_objectGUID(struct ldb_context *ldb)
goto failed;
}
- ret = ldb_search(ldb, tmp_ctx, &res, samdb_ntds_settings_dn(ldb), LDB_SCOPE_BASE, attrs, NULL);
+ ret = ldb_search(ldb, tmp_ctx, &res, samdb_ntds_settings_dn(ldb, tmp_ctx), LDB_SCOPE_BASE, attrs, NULL);
if (ret) {
goto failed;
}
@@ -1478,7 +1478,15 @@ failed:
*/
struct ldb_dn *samdb_server_dn(struct ldb_context *ldb, TALLOC_CTX *mem_ctx)
{
- return ldb_dn_get_parent(mem_ctx, samdb_ntds_settings_dn(ldb));
+ TALLOC_CTX *tmp_ctx = talloc_new(mem_ctx);
+ struct ldb_dn *dn;
+ if (!tmp_ctx) {
+ return NULL;
+ }
+ dn = ldb_dn_get_parent(mem_ctx, samdb_ntds_settings_dn(ldb, tmp_ctx));
+ talloc_free(tmp_ctx);
+ return dn;
+
}
/*
@@ -1798,7 +1806,7 @@ bool samdb_is_pdc(struct ldb_context *ldb)
goto failed;
}
- if (ldb_dn_compare(samdb_ntds_settings_dn(ldb), pdc) == 0) {
+ if (ldb_dn_compare(samdb_ntds_settings_dn(ldb, tmp_ctx), pdc) == 0) {
is_pdc = true;
} else {
is_pdc = false;
@@ -2981,7 +2989,7 @@ int samdb_ntds_options(struct ldb_context *ldb, uint32_t *options)
goto failed;
}
- ret = ldb_search(ldb, tmp_ctx, &res, samdb_ntds_settings_dn(ldb), LDB_SCOPE_BASE, attrs, NULL);
+ ret = ldb_search(ldb, tmp_ctx, &res, samdb_ntds_settings_dn(ldb, tmp_ctx), LDB_SCOPE_BASE, attrs, NULL);
if (ret != LDB_SUCCESS) {
goto failed;
}
@@ -3008,7 +3016,7 @@ const char* samdb_ntds_object_category(TALLOC_CTX *tmp_ctx, struct ldb_context *
int ret;
struct ldb_result *res;
- ret = ldb_search(ldb, tmp_ctx, &res, samdb_ntds_settings_dn(ldb), LDB_SCOPE_BASE, attrs, NULL);
+ ret = ldb_search(ldb, tmp_ctx, &res, samdb_ntds_settings_dn(ldb, tmp_ctx), LDB_SCOPE_BASE, attrs, NULL);
if (ret != LDB_SUCCESS) {
goto failed;
}
diff --git a/source4/dsdb/kcc/kcc_connection.c b/source4/dsdb/kcc/kcc_connection.c
index 266f753c37..ea6383342c 100644
--- a/source4/dsdb/kcc/kcc_connection.c
+++ b/source4/dsdb/kcc/kcc_connection.c
@@ -51,7 +51,7 @@ static int kccsrv_add_connection(struct kccsrv_service *s,
ret = LDB_ERR_OPERATIONS_ERROR;
goto done;
}
- new_dn = samdb_ntds_settings_dn(s->samdb);
+ new_dn = samdb_ntds_settings_dn(s->samdb, tmp_ctx);
if (!new_dn) {
DEBUG(0, ("failed to find NTDS settings\n"));
ret = LDB_ERR_OPERATIONS_ERROR;
@@ -198,7 +198,7 @@ struct kcc_connection_list *kccsrv_find_connections(struct kccsrv_service *s,
return NULL;
}
- base_dn = samdb_ntds_settings_dn(s->samdb);
+ base_dn = samdb_ntds_settings_dn(s->samdb, tmp_ctx);
if (!base_dn) {
DEBUG(0, ("failed to find our own NTDS settings DN\n"));
talloc_free(tmp_ctx);
diff --git a/source4/dsdb/kcc/kcc_periodic.c b/source4/dsdb/kcc/kcc_periodic.c
index e3792300de..f96347f423 100644
--- a/source4/dsdb/kcc/kcc_periodic.c
+++ b/source4/dsdb/kcc/kcc_periodic.c
@@ -392,7 +392,7 @@ static int kccsrv_gc_update(struct kccsrv_service *s, struct ldb_result *res)
}
/* get a list of what NCs we are already replicating */
- ret = dsdb_search_dn(s->samdb, tmp_ctx, &res2, samdb_ntds_settings_dn(s->samdb), attrs2, 0);
+ ret = dsdb_search_dn(s->samdb, tmp_ctx, &res2, samdb_ntds_settings_dn(s->samdb, tmp_ctx), attrs2, 0);
if (ret != LDB_SUCCESS) {
DEBUG(1,("Failed to get our NC list attributes for GC update - %s\n", ldb_errstring(s->samdb)));
talloc_free(tmp_ctx);
diff --git a/source4/dsdb/kcc/kcc_topology.c b/source4/dsdb/kcc/kcc_topology.c
index 9697ec12f7..2a9f2dd15c 100644
--- a/source4/dsdb/kcc/kcc_topology.c
+++ b/source4/dsdb/kcc/kcc_topology.c
@@ -1007,7 +1007,7 @@ static NTSTATUS kcctpl_bridgehead_dc_failed(struct ldb_context *ldb,
tmp_ctx = talloc_new(ldb);
NT_STATUS_HAVE_NO_MEMORY(tmp_ctx);
- settings_dn = samdb_ntds_settings_dn(ldb);
+ settings_dn = samdb_ntds_settings_dn(ldb, tmp_ctx);
if (!settings_dn) {
DEBUG(1, (__location__ ": failed to find our own NTDS Settings "
"DN\n"));
diff --git a/source4/dsdb/repl/drepl_fsmo.c b/source4/dsdb/repl/drepl_fsmo.c
index db6385315b..4a1d08ac1b 100644
--- a/source4/dsdb/repl/drepl_fsmo.c
+++ b/source4/dsdb/repl/drepl_fsmo.c
@@ -77,8 +77,9 @@ NTSTATUS drepl_take_FSMO_role(struct irpc_message *msg,
enum drepl_role_master role = r->in.role;
struct fsmo_role_state *fsmo;
- ntds_dn = samdb_ntds_settings_dn(service->samdb);
+ ntds_dn = samdb_ntds_settings_dn(service->samdb, tmp_ctx);
if (!ntds_dn) {
+ talloc_free(tmp_ctx);
r->out.result = WERR_DS_DRA_INTERNAL_ERROR;
return NT_STATUS_OK;
}
@@ -86,6 +87,7 @@ NTSTATUS drepl_take_FSMO_role(struct irpc_message *msg,
werr = dsdb_get_fsmo_role_info(tmp_ctx, service->samdb, role,
&fsmo_role_dn, &role_owner_dn);
if (!W_ERROR_IS_OK(werr)) {
+ talloc_free(tmp_ctx);
r->out.result = werr;
return NT_STATUS_OK;
}
@@ -106,6 +108,7 @@ NTSTATUS drepl_take_FSMO_role(struct irpc_message *msg,
DEBUG(2,("Unknown role %u in role transfer\n",
(unsigned)role));
r->out.result = WERR_DS_DRA_INTERNAL_ERROR;
+ talloc_free(tmp_ctx);
return NT_STATUS_OK;
}
@@ -115,6 +118,7 @@ NTSTATUS drepl_take_FSMO_role(struct irpc_message *msg,
ldb_dn_get_linearized(fsmo_role_dn),
ldb_dn_get_linearized(role_owner_dn)));
r->out.result = WERR_OK;
+ talloc_free(tmp_ctx);
return NT_STATUS_OK;
}
@@ -134,11 +138,13 @@ NTSTATUS drepl_take_FSMO_role(struct irpc_message *msg,
fsmo);
if (!W_ERROR_IS_OK(werr)) {
r->out.result = werr;
+ talloc_free(tmp_ctx);
return NT_STATUS_OK;
}
/* mark this message to be answered later */
msg->defer_reply = true;
dreplsrv_run_pending_ops(service);
+ talloc_free(tmp_ctx);
return NT_STATUS_OK;
}
diff --git a/source4/dsdb/repl/drepl_partitions.c b/source4/dsdb/repl/drepl_partitions.c
index 3aa715a92d..7464dc1554 100644
--- a/source4/dsdb/repl/drepl_partitions.c
+++ b/source4/dsdb/repl/drepl_partitions.c
@@ -52,7 +52,7 @@ WERROR dreplsrv_load_partitions(struct dreplsrv_service *s)
tmp_ctx = talloc_new(s);
W_ERROR_HAVE_NO_MEMORY(tmp_ctx);
- ntds_dn = samdb_ntds_settings_dn(s->samdb);
+ ntds_dn = samdb_ntds_settings_dn(s->samdb, tmp_ctx);
if (!ntds_dn) {
DEBUG(1,(__location__ ": Unable to find ntds_dn: %s\n", ldb_errstring(s->samdb)));
talloc_free(tmp_ctx);
diff --git a/source4/dsdb/repl/drepl_ridalloc.c b/source4/dsdb/repl/drepl_ridalloc.c
index 6dcd9efd8a..c817c319f2 100644
--- a/source4/dsdb/repl/drepl_ridalloc.c
+++ b/source4/dsdb/repl/drepl_ridalloc.c
@@ -95,7 +95,7 @@ static int drepl_ridalloc_pool_exhausted(struct ldb_context *ldb,
*exhausted = false;
*_alloc_pool = UINT64_MAX;
- server_dn = ldb_dn_get_parent(tmp_ctx, samdb_ntds_settings_dn(ldb));
+ server_dn = ldb_dn_get_parent(tmp_ctx, samdb_ntds_settings_dn(ldb, tmp_ctx));
if (!server_dn) {
talloc_free(tmp_ctx);
return ldb_operr(ldb);
@@ -208,7 +208,7 @@ WERROR dreplsrv_ridalloc_check_rid_pool(struct dreplsrv_service *service)
return WERR_DS_DRA_INTERNAL_ERROR;
}
- if (ldb_dn_compare(samdb_ntds_settings_dn(ldb), fsmo_role_dn) == 0) {
+ if (ldb_dn_compare(samdb_ntds_settings_dn(ldb, tmp_ctx), fsmo_role_dn) == 0) {
/* we are the RID Manager - no need to do a
DRSUAPI_EXOP_FSMO_RID_ALLOC */
talloc_free(tmp_ctx);
diff --git a/source4/dsdb/samdb/ldb_modules/objectclass.c b/source4/dsdb/samdb/ldb_modules/objectclass.c
index d431367b5a..7d34b4e8c3 100644
--- a/source4/dsdb/samdb/ldb_modules/objectclass.c
+++ b/source4/dsdb/samdb/ldb_modules/objectclass.c
@@ -1298,7 +1298,7 @@ static int objectclass_do_delete(struct oc_context *ac)
}
/* DC's ntDSDSA object */
- if (ldb_dn_compare(ac->req->op.del.dn, samdb_ntds_settings_dn(ldb)) == 0) {
+ if (ldb_dn_compare(ac->req->op.del.dn, samdb_ntds_settings_dn(ldb, ac)) == 0) {
ldb_asprintf_errstring(ldb, "objectclass: Cannot delete %s, it's the DC's ntDSDSA object!",
ldb_dn_get_linearized(ac->req->op.del.dn));
return LDB_ERR_UNWILLING_TO_PERFORM;
diff --git a/source4/dsdb/samdb/ldb_modules/ridalloc.c b/source4/dsdb/samdb/ldb_modules/ridalloc.c
index 2cef1c445f..915248c440 100644
--- a/source4/dsdb/samdb/ldb_modules/ridalloc.c
+++ b/source4/dsdb/samdb/ldb_modules/ridalloc.c
@@ -407,7 +407,7 @@ static int ridalloc_create_own_rid_set(struct ldb_module *module, TALLOC_CTX *me
return ret;
}
- if (ldb_dn_compare(samdb_ntds_settings_dn(ldb), fsmo_role_dn) != 0) {
+ if (ldb_dn_compare(samdb_ntds_settings_dn(ldb, tmp_ctx), fsmo_role_dn) != 0) {
ridalloc_poke_rid_manager(module);
ldb_asprintf_errstring(ldb, "Remote RID Set allocation needs refresh");
talloc_free(tmp_ctx);
@@ -448,7 +448,7 @@ static int ridalloc_new_own_pool(struct ldb_module *module, uint64_t *new_pool,
return ret;
}
- if (ldb_dn_compare(samdb_ntds_settings_dn(ldb), fsmo_role_dn) != 0) {
+ if (ldb_dn_compare(samdb_ntds_settings_dn(ldb, tmp_ctx), fsmo_role_dn) != 0) {
ridalloc_poke_rid_manager(module);
ldb_asprintf_errstring(ldb, "Remote RID Set allocation needs refresh");
talloc_free(tmp_ctx);
diff --git a/source4/dsdb/samdb/ldb_modules/rootdse.c b/source4/dsdb/samdb/ldb_modules/rootdse.c
index 6859d04e59..9ae5b20eb1 100644
--- a/source4/dsdb/samdb/ldb_modules/rootdse.c
+++ b/source4/dsdb/samdb/ldb_modules/rootdse.c
@@ -197,7 +197,7 @@ static int dsdb_module_we_are_master(struct ldb_module *module, struct ldb_dn *d
return LDB_SUCCESS;
}
- *master = (ldb_dn_compare(owner_dn, samdb_ntds_settings_dn(ldb_module_get_ctx(module))) == 0);
+ *master = (ldb_dn_compare(owner_dn, samdb_ntds_settings_dn(ldb_module_get_ctx(module), tmp_ctx)) == 0);
talloc_free(tmp_ctx);
return LDB_SUCCESS;
}
@@ -1073,7 +1073,7 @@ static int rootdse_enable_recycle_bin(struct ldb_module *module,struct ldb_conte
}
tmp_ctx = talloc_new(mem_ctx);
- ntds_settings_dn = samdb_ntds_settings_dn(ldb);
+ ntds_settings_dn = samdb_ntds_settings_dn(ldb, tmp_ctx);
if (!ntds_settings_dn) {
talloc_free(tmp_ctx);
return ldb_error(ldb, LDB_ERR_OPERATIONS_ERROR, "Failed to find NTDS settings DN");
diff --git a/source4/dsdb/samdb/ldb_modules/util.c b/source4/dsdb/samdb/ldb_modules/util.c
index 0f1a61236f..253d5c1d2c 100644
--- a/source4/dsdb/samdb/ldb_modules/util.c
+++ b/source4/dsdb/samdb/ldb_modules/util.c
@@ -691,15 +691,16 @@ int dsdb_check_optional_feature(struct ldb_module *module, struct GUID op_featur
struct ldb_message_element *el;
struct ldb_dn *feature_dn;
- feature_dn = samdb_ntds_settings_dn(ldb_module_get_ctx(module));
+ tmp_ctx = talloc_new(ldb);
+
+ feature_dn = samdb_ntds_settings_dn(ldb_module_get_ctx(module), tmp_ctx);
if (feature_dn == NULL) {
+ talloc_free(tmp_ctx);
return ldb_operr(ldb_module_get_ctx(module));
}
*feature_enabled = false;
- tmp_ctx = talloc_new(ldb);
-
ret = dsdb_module_search_dn(module, tmp_ctx, &res, feature_dn, attrs, DSDB_FLAG_NEXT_MODULE, NULL);
if (ret != LDB_SUCCESS) {
ldb_asprintf_errstring(ldb,
diff --git a/source4/dsdb/schema/schema_init.c b/source4/dsdb/schema/schema_init.c
index 1771b267cd..8385ac2def 100644
--- a/source4/dsdb/schema/schema_init.c
+++ b/source4/dsdb/schema/schema_init.c
@@ -897,7 +897,7 @@ int dsdb_schema_from_ldb_results(TALLOC_CTX *mem_ctx, struct ldb_context *ldb,
}
schema->fsmo.master_dn = ldb_msg_find_attr_as_dn(ldb, schema, schema_res->msgs[0], "fSMORoleOwner");
- if (ldb_dn_compare(samdb_ntds_settings_dn(ldb), schema->fsmo.master_dn) == 0) {
+ if (ldb_dn_compare(samdb_ntds_settings_dn(ldb, tmp_ctx), schema->fsmo.master_dn) == 0) {
schema->fsmo.we_are_master = true;
} else {
schema->fsmo.we_are_master = false;
diff --git a/source4/rpc_server/drsuapi/dcesrv_drsuapi.c b/source4/rpc_server/drsuapi/dcesrv_drsuapi.c
index b170ec3e23..1d51ce879a 100644
--- a/source4/rpc_server/drsuapi/dcesrv_drsuapi.c
+++ b/source4/rpc_server/drsuapi/dcesrv_drsuapi.c
@@ -124,7 +124,7 @@ static WERROR dcesrv_drsuapi_DsBind(struct dcesrv_call_state *dce_call, TALLOC_C
/*
* lookup the local servers Replication Epoch
*/
- ntds_dn = samdb_ntds_settings_dn(b_state->sam_ctx);
+ ntds_dn = samdb_ntds_settings_dn(b_state->sam_ctx, mem_ctx);
W_ERROR_HAVE_NO_MEMORY(ntds_dn);
ret = ldb_search(b_state->sam_ctx, mem_ctx, &ntds_res,
diff --git a/source4/rpc_server/drsuapi/getncchanges.c b/source4/rpc_server/drsuapi/getncchanges.c
index 07e64d321d..22ff6142eb 100644
--- a/source4/rpc_server/drsuapi/getncchanges.c
+++ b/source4/rpc_server/drsuapi/getncchanges.c
@@ -723,7 +723,7 @@ static WERROR getncchanges_rid_alloc(struct drsuapi_bind_state *b_state,
return WERR_DS_DRA_INTERNAL_ERROR;
}
- if (ldb_dn_compare(samdb_ntds_settings_dn(ldb), fsmo_role_dn) != 0) {
+ if (ldb_dn_compare(samdb_ntds_settings_dn(ldb, mem_ctx), fsmo_role_dn) != 0) {
/* we're not the RID Manager - go away */
DEBUG(0,(__location__ ": RID Alloc request when not RID Manager\n"));
ctr6->extended_ret = DRSUAPI_EXOP_ERR_FSMO_NOT_OWNER;
@@ -1064,7 +1064,7 @@ static WERROR getncchanges_change_master(struct drsuapi_bind_state *b_state,
return WERR_DS_DRA_INTERNAL_ERROR;
}
- if (ldb_dn_compare(samdb_ntds_settings_dn(ldb), fsmo_role_dn) != 0) {
+ if (ldb_dn_compare(samdb_ntds_settings_dn(ldb, mem_ctx), fsmo_role_dn) != 0) {
/* we're not the current owner - go away */
DEBUG(0,(__location__ ": FSMO transfer request when not owner\n"));
ctr6->extended_ret = DRSUAPI_EXOP_ERR_FSMO_NOT_OWNER;