ns_file_system.c

00001 /*
00002  * Copyright (c) 2017-2018, Arm Limited and affiliates.
00003  * SPDX-License-Identifier: Apache-2.0
00004  *
00005  * Licensed under the Apache License, Version 2.0 (the "License");
00006  * you may not use this file except in compliance with the License.
00007  * You may obtain a copy of the License at
00008  *
00009  *     http://www.apache.org/licenses/LICENSE-2.0
00010  *
00011  * Unless required by applicable law or agreed to in writing, software
00012  * distributed under the License is distributed on an "AS IS" BASIS,
00013  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
00014  * See the License for the specific language governing permissions and
00015  * limitations under the License.
00016  */
00017 
00018 #include <string.h>
00019 #include "ns_types.h"
00020 #include "nsdynmemLIB.h"
00021 #include "ns_file_system.h"
00022 
00023 static char *file_system_root;
00024 
00025 int ns_file_system_set_root_path(const char *root_path)
00026 {
00027     char *new_root_path;
00028 
00029     if (root_path == NULL) {
00030         // File system usage disabled
00031         ns_dyn_mem_free(file_system_root);
00032         file_system_root = NULL;
00033         return 0;
00034     }
00035 
00036     new_root_path = ns_dyn_mem_alloc(strlen(root_path) + 1);
00037     if (!new_root_path) {
00038         // mem alloc failed
00039         return -2;
00040     }
00041 
00042     ns_dyn_mem_free(file_system_root);
00043     file_system_root = new_root_path;
00044     strcpy(file_system_root, root_path);
00045 
00046     return 0;
00047 }
00048 
00049 char *ns_file_system_get_root_path(void)
00050 {
00051     return file_system_root;
00052 }