FAT12 read only file system
Fork of FATFileSystem by
F12RFileSystem.h
- Committer:
- va009039
- Date:
- 2016-04-10
- Revision:
- 9:d92e85b739a7
- Parent:
- 8:6c6acf81ff08
File content as of revision 9:d92e85b739a7:
/* mbed Microcontroller Library * Copyright (c) 2006-2017 ARM Limited * * Permission is hereby granted, free of charge, to any person obtaining a copy * of this software and associated documentation files (the "Software"), to deal * in the Software without restriction, including without limitation the rights * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell * copies of the Software, and to permit persons to whom the Software is * furnished to do so, subject to the following conditions: * * The above copyright notice and this permission notice shall be included in * all copies or substantial portions of the Software. * * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE * AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER * LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE * SOFTWARE. */ #ifndef MBED_F12R_FILESYSTEM_H #define MBED_F12R_FILESYSTEM_H #include "FileSystemLike.h" #include "FileHandle.h" #include <stdint.h> #include "StorageInterface.h" typedef uint32_t sector_t; typedef uint32_t cluster_t; typedef uint32_t filesize_t; using namespace mbed; /** * F12RFileSystem */ class F12RFileSystem : public FileSystemLike { public: F12RFileSystem(StorageInterface* storage_, const char* n); virtual ~F12RFileSystem(); /** * Opens a file on the filesystem */ virtual FileHandle *open(const char* name, int flags); /** * Removes a file path */ virtual int remove(const char *filename); /** * Renames a file */ virtual int rename(const char *oldname, const char *newname); /** * Formats a logical drive, FDISK artitioning rule, 512 bytes per cluster */ virtual int format(); /** * Opens a directory on the filesystem */ virtual DirHandle *opendir(const char *name); /** * Creates a directory path */ virtual int mkdir(const char *name, mode_t mode); /** * Mounts the filesystem */ virtual int mount(); /** * Unmounts the filesystem */ virtual int unmount(); private: friend class F12RFileHandle; friend class F12RDirHandle; uint32_t storage_peek(uint32_t offset, int n); cluster_t fat_read(cluster_t index); StorageInterface* storage; sector_t base_fat; sector_t base_dir; sector_t base_data; uint32_t cluster_size; uint32_t cluster_head(uint32_t pos) const { return pos % cluster_size; } uint32_t cluster_tail(uint32_t pos) const { return cluster_size - cluster_head(pos); } int max_root_dir_entries; bool mounted; }; #endif // MBED_F12R_FILESYSTEM_H