ldb: Ensure we can open a new LDB after a fork()

[samba.git] / lib / ldb / tests / ldb_mod_op_test.c

diff --git a/lib/ldb/tests/ldb_mod_op_test.c b/lib/ldb/tests/ldb_mod_op_test.c
index b91130252a7614063267347140149d702a6d3814..67ac024db86be8a6249a15f8636352b33cc9dbfc 100644 (file)
--- a/lib/ldb/tests/ldb_mod_op_test.c
+++ b/lib/ldb/tests/ldb_mod_op_test.c
@@ -202,6 +202,16 @@ static void test_ldif_message_redacted(void **state)
 static int ldbtest_setup(void **state)
 {
        struct ldbtest_ctx *test_ctx;
+       struct ldb_ldif *ldif;
+#ifdef GUID_IDX
+       const char *index_ldif =                \
+               "dn: @INDEXLIST\n"
+               "@IDXGUID: objectUUID\n"
+               "@IDX_DN_GUID: GUID\n"
+               "\n";
+#else
+       const char *index_ldif = "\n";
+#endif
        int ret;
 
        ldbtest_noconn_setup((void **) &test_ctx);
@@ -209,6 +219,10 @@ static int ldbtest_setup(void **state)
        ret = ldb_connect(test_ctx->ldb, test_ctx->dbpath, 0, NULL);
        assert_int_equal(ret, 0);
 
+       while ((ldif = ldb_ldif_read_string(test_ctx->ldb, &index_ldif))) {
+               ret = ldb_add(test_ctx->ldb, ldif->msg);
+               assert_int_equal(ret, LDB_SUCCESS);
+       }
        *state = test_ctx;
        return 0;
 }
@@ -241,6 +255,9 @@ static void test_ldb_add(void **state)
        ret = ldb_msg_add_string(msg, "cn", "test_cn_val");
        assert_int_equal(ret, 0);
 
+       ret = ldb_msg_add_string(msg, "objectUUID", "0123456789abcdef");
+       assert_int_equal(ret, 0);
+
        ret = ldb_add(test_ctx->ldb, msg);
        assert_int_equal(ret, 0);
 
@@ -279,6 +296,9 @@ static void test_ldb_search(void **state)
        ret = ldb_msg_add_string(msg, "cn", "test_cn_val1");
        assert_int_equal(ret, 0);
 
+       ret = ldb_msg_add_string(msg, "objectUUID", "0123456789abcde1");
+       assert_int_equal(ret, 0);
+
        ret = ldb_add(test_ctx->ldb, msg);
        assert_int_equal(ret, 0);
 
@@ -294,6 +314,9 @@ static void test_ldb_search(void **state)
        ret = ldb_msg_add_string(msg, "cn", "test_cn_val2");
        assert_int_equal(ret, 0);
 
+       ret = ldb_msg_add_string(msg, "objectUUID", "0123456789abcde2");
+       assert_int_equal(ret, 0);
+
        ret = ldb_add(test_ctx->ldb, msg);
        assert_int_equal(ret, 0);
 
@@ -390,7 +413,8 @@ static void assert_dn_doesnt_exist(struct ldbtest_ctx *test_ctx,
 
 static void add_dn_with_cn(struct ldbtest_ctx *test_ctx,
                           struct ldb_dn *dn,
-                          const char *cn_value)
+                          const char *cn_value,
+                          const char *uuid_value)
 {
        int ret;
        TALLOC_CTX *tmp_ctx;
@@ -409,6 +433,9 @@ static void add_dn_with_cn(struct ldbtest_ctx *test_ctx,
        ret = ldb_msg_add_string(msg, "cn", cn_value);
        assert_int_equal(ret, LDB_SUCCESS);
 
+       ret = ldb_msg_add_string(msg, "objectUUID", uuid_value);
+       assert_int_equal(ret, 0);
+
        ret = ldb_add(test_ctx->ldb, msg);
        assert_int_equal(ret, LDB_SUCCESS);
 
@@ -428,7 +455,9 @@ static void test_ldb_del(void **state)
        dn = ldb_dn_new_fmt(test_ctx, test_ctx->ldb, "%s", basedn);
        assert_non_null(dn);
 
-       add_dn_with_cn(test_ctx, dn, "test_del_cn_val");
+       add_dn_with_cn(test_ctx, dn,
+                      "test_del_cn_val",
+                      "0123456789abcdef");
 
        ret = ldb_delete(test_ctx->ldb, dn);
        assert_int_equal(ret, LDB_SUCCESS);
@@ -552,7 +581,8 @@ static void test_ldb_build_search_req(void **state)
 
 static void add_keyval(struct ldbtest_ctx *test_ctx,
                       const char *key,
-                      const char *val)
+                      const char *val,
+                      const char *uuid)
 {
        int ret;
        struct ldb_message *msg;
@@ -566,6 +596,9 @@ static void add_keyval(struct ldbtest_ctx *test_ctx,
        ret = ldb_msg_add_string(msg, key, val);
        assert_int_equal(ret, 0);
 
+       ret = ldb_msg_add_string(msg, "objectUUID", uuid);
+       assert_int_equal(ret, 0);
+
        ret = ldb_add(test_ctx->ldb, msg);
        assert_int_equal(ret, 0);
 
@@ -601,7 +634,8 @@ static void test_transactions(void **state)
        ret = ldb_transaction_start(test_ctx->ldb);
        assert_int_equal(ret, 0);
 
-       add_keyval(test_ctx, "vegetable", "carrot");
+       add_keyval(test_ctx, "vegetable", "carrot",
+                  "0123456789abcde0");
 
        /* commit lev-0 transaction */
        ret = ldb_transaction_commit(test_ctx->ldb);
@@ -611,7 +645,8 @@ static void test_transactions(void **state)
        ret = ldb_transaction_start(test_ctx->ldb);
        assert_int_equal(ret, 0);
 
-       add_keyval(test_ctx, "fruit", "apple");
+       add_keyval(test_ctx, "fruit", "apple",
+                  "0123456789abcde1");
 
        /* abort lev-1 nested transaction */
        ret = ldb_transaction_cancel(test_ctx->ldb);
@@ -637,14 +672,16 @@ static void test_nested_transactions(void **state)
        ret = ldb_transaction_start(test_ctx->ldb);
        assert_int_equal(ret, 0);
 
-       add_keyval(test_ctx, "vegetable", "carrot");
+       add_keyval(test_ctx, "vegetable", "carrot",
+                  "0123456789abcde0");
 
 
        /* start another lev-1 nested transaction */
        ret = ldb_transaction_start(test_ctx->ldb);
        assert_int_equal(ret, 0);
 
-       add_keyval(test_ctx, "fruit", "apple");
+       add_keyval(test_ctx, "fruit", "apple",
+                  "0123456789abcde1");
 
        /* abort lev-1 nested transaction */
        ret = ldb_transaction_cancel(test_ctx->ldb);
@@ -825,6 +862,7 @@ static int ldb_modify_test_setup(void **state)
        struct ldb_mod_test_ctx *mod_test_ctx;
        struct keyval kvs[] = {
                { "cn", "test_mod_cn" },
+               { "objectUUID", "0123456789abcdef"},
                { NULL, NULL },
        };
 
@@ -1129,6 +1167,7 @@ static int ldb_search_test_setup(void **state)
                { "cn", "test_search_cn2" },
                { "uid", "test_search_uid" },
                { "uid", "test_search_uid2" },
+               { "objectUUID", "0123456789abcde0"},
                { NULL, NULL },
        };
        struct keyval kvs2[] = {
@@ -1136,6 +1175,7 @@ static int ldb_search_test_setup(void **state)
                { "cn", "test_search_2_cn2" },
                { "uid", "test_search_2_uid" },
                { "uid", "test_search_2_uid2" },
+               { "objectUUID", "0123456789abcde1"},
                { NULL, NULL },
        };
 
@@ -1484,6 +1524,7 @@ static int test_ldb_search_against_transaction_callback1(struct ldb_request *req
                struct ldb_message *msg;
                TALLOC_FREE(ctx->test_ctx->ldb);
                TALLOC_FREE(ctx->test_ctx->ev);
+               close(pipes[0]);
                ctx->test_ctx->ev = tevent_context_init(ctx->test_ctx);
                if (ctx->test_ctx->ev == NULL) {
                        exit(LDB_ERR_OPERATIONS_ERROR);
@@ -1532,6 +1573,12 @@ static int test_ldb_search_against_transaction_callback1(struct ldb_request *req
                        exit(LDB_ERR_OPERATIONS_ERROR);
                }
 
+               ret = ldb_msg_add_string(msg, "objectUUID",
+                                        "0123456789abcdef");
+               if (ret != 0) {
+                       exit(ret);
+               }
+
                ret = ldb_add(ctx->test_ctx->ldb, msg);
                if (ret != 0) {
                        exit(ret);
@@ -1540,7 +1587,7 @@ static int test_ldb_search_against_transaction_callback1(struct ldb_request *req
                ret = ldb_transaction_commit(ctx->test_ctx->ldb);
                exit(ret);
        }
-
+       close(pipes[1]);
        ret = read(pipes[0], buf, 2);
        assert_int_equal(ret, 2);
 
@@ -1714,6 +1761,7 @@ static int test_ldb_modify_during_search_callback1(struct ldb_request *req,
                struct ldb_dn *dn, *new_dn;
                TALLOC_FREE(ctx->test_ctx->ldb);
                TALLOC_FREE(ctx->test_ctx->ev);
+               close(pipes[0]);
                ctx->test_ctx->ev = tevent_context_init(ctx->test_ctx);
                if (ctx->test_ctx->ev == NULL) {
                        exit(LDB_ERR_OPERATIONS_ERROR);
@@ -1780,6 +1828,7 @@ static int test_ldb_modify_during_search_callback1(struct ldb_request *req,
                struct ldb_message_element *el;
                TALLOC_FREE(ctx->test_ctx->ldb);
                TALLOC_FREE(ctx->test_ctx->ev);
+               close(pipes[0]);
                ctx->test_ctx->ev = tevent_context_init(ctx->test_ctx);
                if (ctx->test_ctx->ev == NULL) {
                        exit(LDB_ERR_OPERATIONS_ERROR);
@@ -1855,6 +1904,7 @@ static int test_ldb_modify_during_search_callback1(struct ldb_request *req,
         * sending the "GO" as it is blocked at ldb_transaction_start().
         */
 
+       close(pipes[1]);
        ret = read(pipes[0], buf, 2);
        assert_int_equal(ret, 2);
 
@@ -1894,10 +1944,13 @@ static void test_ldb_modify_during_search(void **state, bool add_index,
 
                ret = ldb_msg_add_string(msg, "@IDXATTR", "cn");
                assert_int_equal(ret, LDB_SUCCESS);
-
                ret = ldb_add(search_test_ctx->ldb_test_ctx->ldb,
                              msg);
-
+               if (ret == LDB_ERR_ENTRY_ALREADY_EXISTS) {
+                       msg->elements[0].flags = LDB_FLAG_MOD_ADD;
+                       ret = ldb_modify(search_test_ctx->ldb_test_ctx->ldb,
+                                        msg);
+               }
                assert_int_equal(ret, LDB_SUCCESS);
        }
 
@@ -1954,22 +2007,22 @@ static void test_ldb_modify_during_search(void **state, bool add_index,
 
 static void test_ldb_modify_during_indexed_search(void **state)
 {
-       return test_ldb_modify_during_search(state, true, false);
+       test_ldb_modify_during_search(state, true, false);
 }
 
 static void test_ldb_modify_during_unindexed_search(void **state)
 {
-       return test_ldb_modify_during_search(state, false, false);
+       test_ldb_modify_during_search(state, false, false);
 }
 
 static void test_ldb_rename_during_indexed_search(void **state)
 {
-       return test_ldb_modify_during_search(state, true, true);
+       test_ldb_modify_during_search(state, true, true);
 }
 
 static void test_ldb_rename_during_unindexed_search(void **state)
 {
-       return test_ldb_modify_during_search(state, false, true);
+       test_ldb_modify_during_search(state, false, true);
 }
 
 /*
@@ -2026,6 +2079,7 @@ static int test_ldb_modify_during_whole_search_callback1(struct ldb_request *req
                struct ldb_message_element *el;
                TALLOC_FREE(ctx->test_ctx->ldb);
                TALLOC_FREE(ctx->test_ctx->ev);
+               close(pipes[0]);
                ctx->test_ctx->ev = tevent_context_init(ctx->test_ctx);
                if (ctx->test_ctx->ev == NULL) {
                        exit(LDB_ERR_OPERATIONS_ERROR);
@@ -2088,6 +2142,7 @@ static int test_ldb_modify_during_whole_search_callback1(struct ldb_request *req
                exit(ret);
        }
 
+       close(pipes[1]);
        ret = read(pipes[0], buf, 2);
        assert_int_equal(ret, 2);
 
@@ -2300,6 +2355,7 @@ static void test_ldb_modify_before_ldb_wait(void **state)
                struct ldb_message_element *el;
                TALLOC_FREE(search_test_ctx->ldb_test_ctx->ldb);
                TALLOC_FREE(search_test_ctx->ldb_test_ctx->ev);
+               close(pipes[0]);
                search_test_ctx->ldb_test_ctx->ev = tevent_context_init(search_test_ctx->ldb_test_ctx);
                if (search_test_ctx->ldb_test_ctx->ev == NULL) {
                        exit(LDB_ERR_OPERATIONS_ERROR);
@@ -2368,6 +2424,7 @@ static void test_ldb_modify_before_ldb_wait(void **state)
                ret = ldb_transaction_commit(search_test_ctx->ldb_test_ctx->ldb);
                exit(ret);
        }
+       close(pipes[1]);
 
        ret = read(pipes[0], buf, 2);
        assert_int_equal(ret, 2);
@@ -2436,6 +2493,7 @@ static int ldb_case_test_setup(void **state)
        struct keyval kvs[] = {
                { "cn", "CaseInsensitiveValue" },
                { "uid", "CaseSensitiveValue" },
+               { "objectUUID", "0123456789abcdef" },
                { NULL, NULL },
        };
 
@@ -2649,6 +2707,11 @@ static void test_ldb_attrs_index_handler(void **state)
        /* Add the index (actually any modify will do) */
        while ((ldif = ldb_ldif_read_string(ldb_test_ctx->ldb, &index_ldif))) {
                ret = ldb_add(ldb_test_ctx->ldb, ldif->msg);
+               if (ret == LDB_ERR_ENTRY_ALREADY_EXISTS) {
+                       ldif->msg->elements[0].flags = LDB_FLAG_MOD_ADD;
+                       ret = ldb_modify(ldb_test_ctx->ldb,
+                                        ldif->msg);
+               }
                assert_int_equal(ret, LDB_SUCCESS);
        }
 
@@ -2734,7 +2797,8 @@ static int ldb_rename_test_setup(void **state)
 
        add_dn_with_cn(ldb_test_ctx,
                       rename_test_ctx->basedn,
-                      "test_rename_cn_val");
+                      "test_rename_cn_val",
+                      "0123456789abcde0");
 
        *state = rename_test_ctx;
        return 0;
@@ -2839,7 +2903,8 @@ static void test_ldb_rename_to_exists(void **state)
 
        add_dn_with_cn(rename_test_ctx->ldb_test_ctx,
                       new_dn,
-                      "test_rename_cn_val");
+                      "test_rename_cn_val",
+                      "0123456789abcde1");
 
        ret = ldb_rename(rename_test_ctx->ldb_test_ctx->ldb,
                         rename_test_ctx->basedn,
@@ -3006,6 +3071,10 @@ static void test_read_only(void **state)
                ret = ldb_msg_add_string(msg, "cn", "test_cn_val");
                assert_int_equal(ret, 0);
 
+               ret = ldb_msg_add_string(msg, "objectUUID",
+                                        "0123456789abcde1");
+               assert_int_equal(ret, LDB_SUCCESS);
+
                ret = ldb_add(ro_ldb, msg);
                assert_int_equal(ret, LDB_ERR_UNWILLING_TO_PERFORM);
                TALLOC_FREE(msg);
@@ -3019,12 +3088,16 @@ static void test_read_only(void **state)
                msg = ldb_msg_new(tmp_ctx);
                assert_non_null(msg);
 
-               msg->dn = ldb_dn_new_fmt(msg, ro_ldb, "dc=test");
+               msg->dn = ldb_dn_new_fmt(msg, rw_ldb, "dc=test");
                assert_non_null(msg->dn);
 
                ret = ldb_msg_add_string(msg, "cn", "test_cn_val");
                assert_int_equal(ret, 0);
 
+               ret = ldb_msg_add_string(msg, "objectUUID",
+                                        "0123456789abcde2");
+               assert_int_equal(ret, LDB_SUCCESS);
+
                ret = ldb_add(rw_ldb, msg);
                assert_int_equal(ret, LDB_SUCCESS);
                TALLOC_FREE(msg);
@@ -3098,8 +3171,12 @@ static int ldb_unique_index_test_setup(void **state)
        const char *index_ldif =  \
                "dn: @INDEXLIST\n"
                "@IDXATTR: cn\n"
+#ifdef GUID_IDX
+               "@IDXGUID: objectUUID\n"
+               "@IDX_DN_GUID: GUID\n"
+#endif
                "\n";
-       const char *options[] = {"modules:unique_index_test"};
+       const char *options[] = {"modules:unique_index_test", NULL};
 
 
        ret = ldb_register_module(&ldb_unique_index_test_module_ops);
@@ -3186,6 +3263,10 @@ static void test_ldb_add_unique_value_to_unique_index(void **state)
        ret = ldb_msg_add_string(msg, "cn", "test_unique_index");
        assert_int_equal(ret, LDB_SUCCESS);
 
+       ret = ldb_msg_add_string(msg, "objectUUID",
+                                "0123456789abcde1");
+       assert_int_equal(ret, LDB_SUCCESS);
+
        ret = ldb_add(test_ctx->ldb, msg);
        assert_int_equal(ret, LDB_SUCCESS);
 
@@ -3200,8 +3281,12 @@ static int ldb_non_unique_index_test_setup(void **state)
        const char *index_ldif =  \
                "dn: @INDEXLIST\n"
                "@IDXATTR: cn\n"
+#ifdef GUID_IDX
+               "@IDXGUID: objectUUID\n"
+               "@IDX_DN_GUID: GUID\n"
+#endif
                "\n";
-       const char *options[] = {"modules:unique_index_test"};
+       const char *options[] = {"modules:unique_index_test", NULL};
 
 
        ret = ldb_register_module(&ldb_unique_index_test_module_ops);
@@ -3270,6 +3355,10 @@ static void test_ldb_add_duplicate_value_to_unique_index(void **state)
        ret = ldb_msg_add_string(msg01, "cn", "test_unique_index");
        assert_int_equal(ret, LDB_SUCCESS);
 
+       ret = ldb_msg_add_string(msg01, "objectUUID",
+                                "0123456789abcde1");
+       assert_int_equal(ret, LDB_SUCCESS);
+
        ret = ldb_add(test_ctx->ldb, msg01);
        assert_int_equal(ret, LDB_SUCCESS);
 
@@ -3282,6 +3371,10 @@ static void test_ldb_add_duplicate_value_to_unique_index(void **state)
        ret = ldb_msg_add_string(msg02, "cn", "test_unique_index");
        assert_int_equal(ret, LDB_SUCCESS);
 
+       ret = ldb_msg_add_string(msg02, "objectUUID",
+                                "0123456789abcde2");
+       assert_int_equal(ret, LDB_SUCCESS);
+
        ret = ldb_add(test_ctx->ldb, msg02);
        assert_int_equal(ret, LDB_ERR_CONSTRAINT_VIOLATION);
        talloc_free(tmp_ctx);
@@ -3311,6 +3404,9 @@ static void test_ldb_add_to_index_duplicates_allowed(void **state)
        ret = ldb_msg_add_string(msg01, "cn", "test_unique_index");
        assert_int_equal(ret, LDB_SUCCESS);
 
+       ret = ldb_msg_add_string(msg01, "objectUUID",
+                                "0123456789abcde1");
+
        ret = ldb_add(test_ctx->ldb, msg01);
        assert_int_equal(ret, LDB_SUCCESS);
 
@@ -3323,6 +3419,9 @@ static void test_ldb_add_to_index_duplicates_allowed(void **state)
        ret = ldb_msg_add_string(msg02, "cn", "test_unique_index");
        assert_int_equal(ret, LDB_SUCCESS);
 
+       ret = ldb_msg_add_string(msg02, "objectUUID",
+                                "0123456789abcde2");
+
        ret = ldb_add(test_ctx->ldb, msg02);
        assert_int_equal(ret, LDB_SUCCESS);
        talloc_free(tmp_ctx);
@@ -3352,6 +3451,9 @@ static void test_ldb_add_to_index_unique_values_required(void **state)
        ret = ldb_msg_add_string(msg01, "cn", "test_unique_index");
        assert_int_equal(ret, LDB_SUCCESS);
 
+       ret = ldb_msg_add_string(msg01, "objectUUID",
+                                "0123456789abcde1");
+
        ret = ldb_add(test_ctx->ldb, msg01);
        assert_int_equal(ret, LDB_SUCCESS);
 
@@ -3364,6 +3466,9 @@ static void test_ldb_add_to_index_unique_values_required(void **state)
        ret = ldb_msg_add_string(msg02, "cn", "test_unique_index");
        assert_int_equal(ret, LDB_SUCCESS);
 
+       ret = ldb_msg_add_string(msg02, "objectUUID",
+                                "0123456789abcde2");
+
        ret = ldb_add(test_ctx->ldb, msg02);
        assert_int_equal(ret, LDB_ERR_CONSTRAINT_VIOLATION);
        talloc_free(tmp_ctx);
@@ -3389,6 +3494,11 @@ static void test_ldb_unique_index_duplicate_logging(void **state)
        char *debug_string = NULL;
        char *p = NULL;
 
+       /* The GUID mode is not compatible with this test */
+#ifdef GUID_IDX
+       return;
+#endif
+
        ldb_set_debug(test_ctx->ldb, ldb_debug_string, &debug_string);
        tmp_ctx = talloc_new(test_ctx);
        assert_non_null(tmp_ctx);
@@ -3402,6 +3512,9 @@ static void test_ldb_unique_index_duplicate_logging(void **state)
        ret = ldb_msg_add_string(msg01, "cn", "test_unique_index");
        assert_int_equal(ret, LDB_SUCCESS);
 
+       ret = ldb_msg_add_string(msg01, "objectUUID",
+                                "0123456789abcde1");
+
        ret = ldb_add(test_ctx->ldb, msg01);
        assert_int_equal(ret, LDB_SUCCESS);
 
@@ -3414,6 +3527,9 @@ static void test_ldb_unique_index_duplicate_logging(void **state)
        ret = ldb_msg_add_string(msg02, "cn", "test_unique_index");
        assert_int_equal(ret, LDB_SUCCESS);
 
+       ret = ldb_msg_add_string(msg02, "objectUUID",
+                                "0123456789abcde2");
+
        ret = ldb_add(test_ctx->ldb, msg02);
        assert_int_equal(ret, LDB_ERR_CONSTRAINT_VIOLATION);
 
@@ -3438,6 +3554,11 @@ static void test_ldb_duplicate_dn_logging(void **state)
        TALLOC_CTX *tmp_ctx;
        char *debug_string = NULL;
 
+       /* The GUID mode is not compatible with this test */
+#ifdef GUID_IDX
+       return;
+#endif
+
        ldb_set_debug(test_ctx->ldb, ldb_debug_string, &debug_string);
        tmp_ctx = talloc_new(test_ctx);
        assert_non_null(tmp_ctx);
@@ -3451,6 +3572,9 @@ static void test_ldb_duplicate_dn_logging(void **state)
        ret = ldb_msg_add_string(msg01, "cn", "test_unique_index01");
        assert_int_equal(ret, LDB_SUCCESS);
 
+       ret = ldb_msg_add_string(msg01, "objectUUID",
+                                "0123456789abcde1");
+
        ret = ldb_add(test_ctx->ldb, msg01);
        assert_int_equal(ret, LDB_SUCCESS);
 
@@ -3463,6 +3587,9 @@ static void test_ldb_duplicate_dn_logging(void **state)
        ret = ldb_msg_add_string(msg02, "cn", "test_unique_index02");
        assert_int_equal(ret, LDB_SUCCESS);
 
+       ret = ldb_msg_add_string(msg02, "objectUUID",
+                                "0123456789abcde2");
+
        ret = ldb_add(test_ctx->ldb, msg02);
        assert_int_equal(ret, LDB_ERR_ENTRY_ALREADY_EXISTS);
 
@@ -3693,6 +3820,270 @@ static void test_ldb_talloc_destructor_transaction_cleanup(void **state)
        }
 }
 
+static void test_transaction_start_across_fork(void **state)
+{
+       struct ldb_context *ldb1 = NULL;
+       int ret;
+       struct ldbtest_ctx *test_ctx = NULL;
+       int pipes[2];
+       char buf[2];
+       int wstatus;
+       pid_t pid, child_pid;
+
+       test_ctx = talloc_get_type_abort(*state, struct ldbtest_ctx);
+
+       /*
+        * Open the database
+        */
+       ldb1 = ldb_init(test_ctx, test_ctx->ev);
+       ret = ldb_connect(ldb1, test_ctx->dbpath, 0, NULL);
+       assert_int_equal(ret, 0);
+
+       ret = pipe(pipes);
+       assert_int_equal(ret, 0);
+
+       child_pid = fork();
+       if (child_pid == 0) {
+               close(pipes[0]);
+               ret = ldb_transaction_start(ldb1);
+               if (ret != LDB_ERR_PROTOCOL_ERROR) {
+                       print_error(__location__": ldb_transaction_start "
+                                   "returned (%d) %s\n",
+                                   ret,
+                                   ldb1->err_string);
+                       exit(LDB_ERR_OTHER);
+               }
+
+               ret = write(pipes[1], "GO", 2);
+               if (ret != 2) {
+                       print_error(__location__
+                                     " write returned (%d)",
+                                     ret);
+                       exit(LDB_ERR_OPERATIONS_ERROR);
+               }
+               exit(LDB_SUCCESS);
+       }
+       close(pipes[1]);
+       ret = read(pipes[0], buf, 2);
+       assert_int_equal(ret, 2);
+
+       pid = waitpid(child_pid, &wstatus, 0);
+       assert_int_equal(pid, child_pid);
+
+       assert_true(WIFEXITED(wstatus));
+
+       assert_int_equal(WEXITSTATUS(wstatus), 0);
+}
+
+static void test_transaction_commit_across_fork(void **state)
+{
+       struct ldb_context *ldb1 = NULL;
+       int ret;
+       struct ldbtest_ctx *test_ctx = NULL;
+       int pipes[2];
+       char buf[2];
+       int wstatus;
+       pid_t pid, child_pid;
+
+       test_ctx = talloc_get_type_abort(*state, struct ldbtest_ctx);
+
+       /*
+        * Open the database
+        */
+       ldb1 = ldb_init(test_ctx, test_ctx->ev);
+       ret = ldb_connect(ldb1, test_ctx->dbpath, 0, NULL);
+       assert_int_equal(ret, 0);
+
+       ret = ldb_transaction_start(ldb1);
+       assert_int_equal(ret, 0);
+
+       ret = pipe(pipes);
+       assert_int_equal(ret, 0);
+
+       child_pid = fork();
+       if (child_pid == 0) {
+               close(pipes[0]);
+               ret = ldb_transaction_commit(ldb1);
+
+               if (ret != LDB_ERR_PROTOCOL_ERROR) {
+                       print_error(__location__": ldb_transaction_commit "
+                                   "returned (%d) %s\n",
+                                   ret,
+                                   ldb1->err_string);
+                       exit(LDB_ERR_OTHER);
+               }
+
+               ret = write(pipes[1], "GO", 2);
+               if (ret != 2) {
+                       print_error(__location__
+                                     " write returned (%d)",
+                                     ret);
+                       exit(LDB_ERR_OPERATIONS_ERROR);
+               }
+               exit(LDB_SUCCESS);
+       }
+       close(pipes[1]);
+       ret = read(pipes[0], buf, 2);
+       assert_int_equal(ret, 2);
+
+       pid = waitpid(child_pid, &wstatus, 0);
+       assert_int_equal(pid, child_pid);
+
+       assert_true(WIFEXITED(wstatus));
+
+       assert_int_equal(WEXITSTATUS(wstatus), 0);
+}
+
+static void test_lock_read_across_fork(void **state)
+{
+       struct ldb_context *ldb1 = NULL;
+       int ret;
+       struct ldbtest_ctx *test_ctx = NULL;
+       int pipes[2];
+       char buf[2];
+       int wstatus;
+       pid_t pid, child_pid;
+
+       test_ctx = talloc_get_type_abort(*state, struct ldbtest_ctx);
+
+       /*
+        * Open the database
+        */
+       ldb1 = ldb_init(test_ctx, test_ctx->ev);
+       ret = ldb_connect(ldb1, test_ctx->dbpath, 0, NULL);
+       assert_int_equal(ret, 0);
+
+       ret = pipe(pipes);
+       assert_int_equal(ret, 0);
+
+       child_pid = fork();
+       if (child_pid == 0) {
+               struct ldb_dn *basedn;
+               struct ldb_result *result = NULL;
+
+               close(pipes[0]);
+
+               basedn = ldb_dn_new_fmt(test_ctx, test_ctx->ldb, "dc=test");
+               assert_non_null(basedn);
+
+               ret = ldb_search(test_ctx->ldb,
+                                test_ctx,
+                                &result,
+                                basedn,
+                                LDB_SCOPE_BASE,
+                                NULL,
+                                NULL);
+               if (ret != LDB_ERR_PROTOCOL_ERROR) {
+                       print_error(__location__": ldb_search "
+                                   "returned (%d) %s\n",
+                                   ret,
+                                   ldb1->err_string);
+                       exit(LDB_ERR_OTHER);
+               }
+
+               ret = write(pipes[1], "GO", 2);
+               if (ret != 2) {
+                       print_error(__location__
+                                     " write returned (%d)",
+                                     ret);
+                       exit(LDB_ERR_OPERATIONS_ERROR);
+               }
+               exit(LDB_SUCCESS);
+       }
+       close(pipes[1]);
+       ret = read(pipes[0], buf, 2);
+       assert_int_equal(ret, 2);
+
+       pid = waitpid(child_pid, &wstatus, 0);
+       assert_int_equal(pid, child_pid);
+
+       assert_true(WIFEXITED(wstatus));
+
+       assert_int_equal(WEXITSTATUS(wstatus), 0);
+
+       {
+               /*
+                * Ensure that the search actually succeeds on the opening
+                * pid
+                */
+               struct ldb_dn *basedn;
+               struct ldb_result *result = NULL;
+
+               close(pipes[0]);
+
+               basedn = ldb_dn_new_fmt(test_ctx, test_ctx->ldb, "dc=test");
+               assert_non_null(basedn);
+
+               ret = ldb_search(test_ctx->ldb,
+                                test_ctx,
+                                &result,
+                                basedn,
+                                LDB_SCOPE_BASE,
+                                NULL,
+                                NULL);
+               assert_int_equal(0, ret);
+       }
+}
+
+static void test_multiple_opens_across_fork(void **state)
+{
+       struct ldb_context *ldb1 = NULL;
+       struct ldb_context *ldb2 = NULL;
+       int ret;
+       struct ldbtest_ctx *test_ctx = NULL;
+       int pipes[2];
+       char buf[2];
+       int wstatus;
+       pid_t pid, child_pid;
+
+       test_ctx = talloc_get_type_abort(*state, struct ldbtest_ctx);
+
+       /*
+        * Open the database again
+        */
+       ldb1 = ldb_init(test_ctx, test_ctx->ev);
+       ret = ldb_connect(ldb1, test_ctx->dbpath, LDB_FLG_RDONLY, NULL);
+       assert_int_equal(ret, 0);
+
+       ldb2 = ldb_init(test_ctx, test_ctx->ev);
+       ret = ldb_connect(ldb2, test_ctx->dbpath, 0, NULL);
+       assert_int_equal(ret, 0);
+
+       ret = pipe(pipes);
+       assert_int_equal(ret, 0);
+
+       child_pid = fork();
+       if (child_pid == 0) {
+               struct ldb_context *ldb3 = NULL;
+
+               close(pipes[0]);
+               ldb3 = ldb_init(test_ctx, test_ctx->ev);
+               ret = ldb_connect(ldb3, test_ctx->dbpath, 0, NULL);
+               if (ret != 0) {
+                       print_error(__location__": ldb_connect returned (%d)\n",
+                                   ret);
+                       exit(ret);
+               }
+               ret = write(pipes[1], "GO", 2);
+               if (ret != 2) {
+                       print_error(__location__
+                                     " write returned (%d)",
+                                     ret);
+                       exit(LDB_ERR_OPERATIONS_ERROR);
+               }
+               exit(LDB_SUCCESS);
+       }
+       close(pipes[1]);
+       ret = read(pipes[0], buf, 2);
+       assert_int_equal(ret, 2);
+
+       pid = waitpid(child_pid, &wstatus, 0);
+       assert_int_equal(pid, child_pid);
+
+       assert_true(WIFEXITED(wstatus));
+
+       assert_int_equal(WEXITSTATUS(wstatus), 0);
+}
 
 int main(int argc, const char **argv)
 {
@@ -3836,6 +4227,7 @@ int main(int argc, const char **argv)
                        test_ldb_add_to_index_unique_values_required,
                        ldb_non_unique_index_test_setup,
                        ldb_non_unique_index_test_teardown),
+               /* These tests are not compatible with mdb */
                cmocka_unit_test_setup_teardown(
                        test_ldb_unique_index_duplicate_logging,
                        ldb_unique_index_test_setup,
@@ -3856,6 +4248,22 @@ int main(int argc, const char **argv)
                        test_ldb_talloc_destructor_transaction_cleanup,
                        ldbtest_setup,
                        ldbtest_teardown),
+               cmocka_unit_test_setup_teardown(
+                       test_transaction_start_across_fork,
+                       ldbtest_setup,
+                       ldbtest_teardown),
+               cmocka_unit_test_setup_teardown(
+                       test_transaction_commit_across_fork,
+                       ldbtest_setup,
+                       ldbtest_teardown),
+               cmocka_unit_test_setup_teardown(
+                       test_lock_read_across_fork,
+                       ldbtest_setup,
+                       ldbtest_teardown),
+               cmocka_unit_test_setup_teardown(
+                       test_multiple_opens_across_fork,
+                       ldbtest_setup,
+                       ldbtest_teardown),
        };
 
        return cmocka_run_group_tests(tests, NULL, NULL);