| /* |
| * Licensed to the Apache Software Foundation (ASF) under one |
| * or more contributor license agreements. See the NOTICE file |
| * distributed with this work for additional information |
| * regarding copyright ownership. The ASF licenses this file |
| * to you under the Apache License, Version 2.0 (the |
| * "License"); you may not use this file except in compliance |
| * with the License. You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, |
| * software distributed under the License is distributed on an |
| * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY |
| * KIND, either express or implied. See the License for the |
| * specific language governing permissions and limitations |
| * under the License. |
| */ |
| |
| /* |
| * SPDX-License-Identifier: Apache-2.0 |
| */ |
| |
| #include <stdint.h> |
| #include <nffs/nffs.h> |
| #include <fs.h> |
| #include "nffs_test_utils.h" |
| #include <ztest.h> |
| #include <ztest_assert.h> |
| |
| extern struct k_mem_slab nffs_block_entry_pool; |
| |
| void test_gc_on_oom(void) |
| { |
| int rc; |
| |
| /*** Setup. */ |
| /* Ensure all areas are the same size. */ |
| static const struct nffs_area_desc area_descs_two[] = { |
| { 0x00000000 + TEST_FLASH_OFFSET, 16 * 1024 }, |
| { 0x00004000 + TEST_FLASH_OFFSET, 16 * 1024 }, |
| { 0x00008000 + TEST_FLASH_OFFSET, 16 * 1024 }, |
| { 0, 0 }, |
| }; |
| |
| rc = nffs_format_full(area_descs_two); |
| zassert_equal(rc, 0, "cannot format nffs"); |
| |
| /* Leak block entries until only four are left. */ |
| /* |
| * XXX: This is ridiculous. Need to fix nffs configuration so that the |
| * caller passes a config object rather than writing to a global |
| * variable. |
| */ |
| while (k_mem_slab_num_free_get(&nffs_block_entry_pool) != 4) { |
| nffs_block_entry_alloc(); |
| } |
| |
| /*** Write 4 data blocks. */ |
| struct nffs_test_block_desc blocks[4] = { { |
| .data = "1", |
| .data_len = 1, |
| }, { |
| .data = "2", |
| .data_len = 1, |
| }, { |
| .data = "3", |
| .data_len = 1, |
| }, { |
| .data = "4", |
| .data_len = 1, |
| } }; |
| |
| nffs_test_util_create_file_blocks("/myfile.txt", blocks, 4); |
| |
| zassert_equal(k_mem_slab_num_free_get(&nffs_block_entry_pool), 0, |
| "file blocks problem"); |
| |
| /* Attempt another one-byte write. This should trigger a garbage |
| * collection cycle, resulting in the four blocks being collated. The |
| * fifth write consumes an additional block, resulting in 2 out of 4 |
| * blocks in use. |
| */ |
| nffs_test_util_append_file("/myfile.txt", "5", 1); |
| |
| zassert_equal(k_mem_slab_num_free_get(&nffs_block_entry_pool), 2, |
| "file blocks problem"); |
| |
| struct nffs_test_file_desc *expected_system = |
| (struct nffs_test_file_desc[]) { { |
| .filename = "", |
| .is_dir = 1, |
| .children = (struct nffs_test_file_desc[]) { { |
| .filename = "myfile.txt", |
| .contents = "12345", |
| .contents_len = 5, |
| }, { |
| .filename = NULL, |
| } }, |
| } }; |
| |
| nffs_test_assert_system(expected_system, area_descs_two); |
| } |