| /* |
| * 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. |
| */ |
| |
| #include <stdlib.h> |
| #include <string.h> |
| #include "os/mynewt.h" |
| #include <disk/disk.h> |
| |
| struct disk_info { |
| const char *disk_name; |
| const char *fs_name; |
| struct disk_ops *dops; |
| |
| SLIST_ENTRY(disk_info) sc_next; |
| }; |
| |
| static SLIST_HEAD(, disk_info) disks = SLIST_HEAD_INITIALIZER(); |
| |
| /** |
| * |
| */ |
| int disk_register(const char *disk_name, const char *fs_name, struct disk_ops *dops) |
| { |
| struct disk_info *info = NULL; |
| struct disk_info *sc; |
| |
| SLIST_FOREACH(sc, &disks, sc_next) { |
| if (strcmp(sc->disk_name, disk_name) == 0) { |
| return DISK_ENOENT; |
| } |
| } |
| |
| info = malloc(sizeof(struct disk_info)); |
| if (!info) { |
| return DISK_ENOMEM; |
| } |
| |
| info->disk_name = disk_name; |
| info->fs_name = fs_name; |
| info->dops = dops; |
| |
| SLIST_INSERT_HEAD(&disks, info, sc_next); |
| |
| return 0; |
| } |
| |
| struct disk_ops * |
| disk_ops_for(const char *disk_name) |
| { |
| struct disk_info *sc; |
| |
| if (disk_name) { |
| SLIST_FOREACH(sc, &disks, sc_next) { |
| if (strcmp(sc->disk_name, disk_name) == 0) { |
| return sc->dops; |
| } |
| } |
| } |
| |
| return NULL; |
| } |
| |
| char * |
| disk_fs_for(const char *disk_name) |
| { |
| struct disk_info *sc; |
| |
| if (disk_name) { |
| SLIST_FOREACH(sc, &disks, sc_next) { |
| if (strcmp(sc->disk_name, disk_name) == 0) { |
| return ((char *) sc->fs_name); |
| } |
| } |
| } |
| |
| return NULL; |
| } |
| |
| char * |
| disk_name_from_path(const char *path) |
| { |
| char *colon; |
| uint8_t len; |
| char *disk; |
| |
| colon = (char *) path; |
| while (*colon && *colon != ':') { |
| colon++; |
| } |
| |
| if (*colon != ':') { |
| return NULL; |
| } |
| |
| len = colon - path; |
| disk = malloc(len + 1); |
| if (!disk) { |
| return NULL; |
| } |
| memcpy(disk, path, len); |
| disk[len] = '\0'; |
| |
| return disk; |
| } |
| |
| /** |
| * @brief Returns the path with the disk prefix removed (if found) |
| * |
| * Paths should be given in the form disk<number>:/path. This routine |
| * will parse and return only the path, removing the disk information. |
| */ |
| char * |
| disk_filepath_from_path(const char *path) |
| { |
| char *colon; |
| char *filepath; |
| size_t len; |
| |
| colon = (char *) path; |
| while (*colon && *colon != ':') { |
| colon++; |
| } |
| |
| if (*colon != ':') { |
| filepath = strdup(path); |
| } else { |
| colon++; |
| len = strlen(colon); |
| filepath = malloc(len + 1); |
| memcpy(filepath, colon, len); |
| filepath[len] = '\0'; |
| } |
| |
| return filepath; |
| } |