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-rw-r--r--sdk-modifications/include/directory.h172
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diff --git a/sdk-modifications/include/directory.h b/sdk-modifications/include/directory.h
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-/*
- directory.h
- Reading, writing and manipulation of the directory structure on
- a FAT partition
-
- Copyright (c) 2006 Michael "Chishm" Chisholm
-
- Redistribution and use in source and binary forms, with or without modification,
- are permitted provided that the following conditions are met:
-
- 1. Redistributions of source code must retain the above copyright notice,
- this list of conditions and the following disclaimer.
- 2. Redistributions in binary form must reproduce the above copyright notice,
- this list of conditions and the following disclaimer in the documentation and/or
- other materials provided with the distribution.
- 3. The name of the author may not be used to endorse or promote products derived
- from this software without specific prior written permission.
-
- THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED
- WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY
- AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR BE
- LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
- DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
- THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
- (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE,
- EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-
- 2006-07-11 - Chishm
- * Original release
-*/
-
-#ifndef _DIRECTORY_H
-#define _DIRECTORY_H
-
-#include <sys/stat.h>
-
-#include "fs_common.h"
-#include "partition.h"
-
-#define DIR_ENTRY_DATA_SIZE 0x20
-#define MAX_FILENAME_LENGTH 256
-#define MAX_ALIAS_LENGTH 13
-#define LFN_ENTRY_LENGTH 13
-#define FAT16_ROOT_DIR_CLUSTER 0
-
-#define DIR_SEPARATOR '/'
-
-// File attributes
-#define ATTRIB_ARCH 0x20 // Archive
-#define ATTRIB_DIR 0x10 // Directory
-#define ATTRIB_LFN 0x0F // Long file name
-#define ATTRIB_VOL 0x08 // Volume
-#define ATTRIB_SYS 0x04 // System
-#define ATTRIB_HID 0x02 // Hidden
-#define ATTRIB_RO 0x01 // Read only
-
-typedef enum {FT_DIRECTORY, FT_FILE} FILE_TYPE;
-
-typedef struct {
- u32 cluster;
- u32 sector;
- s32 offset;
-} DIR_ENTRY_POSITION;
-
-typedef struct {
- u8 entryData[DIR_ENTRY_DATA_SIZE];
- DIR_ENTRY_POSITION dataStart; // Points to the start of the LFN entries of a file, or the alias for no LFN
- DIR_ENTRY_POSITION dataEnd; // Always points to the file/directory's alias entry
- char d_name[MAX_FILENAME_LENGTH + MAX_FILENAME_LENGTH*2]; //Store name string using UTF8 coding
- //u16 unicodeFilename[MAX_FILENAME_LENGTH];
-} DIR_ENTRY;
-
-// Directory entry offsets
-enum DIR_ENTRY_offset {
- DIR_ENTRY_name = 0x00,
- DIR_ENTRY_extension = 0x08,
- DIR_ENTRY_attributes = 0x0B,
- DIR_ENTRY_reserved = 0x0C,
- DIR_ENTRY_cTime_ms = 0x0D,
- DIR_ENTRY_cTime = 0x0E,
- DIR_ENTRY_cDate = 0x10,
- DIR_ENTRY_aDate = 0x12,
- DIR_ENTRY_clusterHigh = 0x14,
- DIR_ENTRY_mTime = 0x16,
- DIR_ENTRY_mDate = 0x18,
- DIR_ENTRY_cluster = 0x1A,
- DIR_ENTRY_fileSize = 0x1C
-};
-
-/*
-Returns true if the file specified by entry is a directory
-*/
-static inline bool _FAT_directory_isDirectory (DIR_ENTRY* entry) {
- return ((entry->entryData[DIR_ENTRY_attributes] & ATTRIB_DIR) != 0);
-}
-
-static inline bool _FAT_directory_isWritable (DIR_ENTRY* entry) {
- return ((entry->entryData[DIR_ENTRY_attributes] & ATTRIB_RO) == 0);
-}
-
-static inline bool _FAT_directory_isDot (DIR_ENTRY* entry) {
- return ((entry->d_name[0] == '.') && ((entry->d_name[1] == '\0') ||
- ((entry->d_name[1] == '.') && entry->d_name[2] == '\0')));
-}
-
-/*
-Reads the first directory entry from the directory starting at dirCluster
-Places result in entry
-entry will be destroyed even if no directory entry is found
-Returns true on success, false on failure
-*/
-bool _FAT_directory_getFirstEntry (PARTITION* partition, DIR_ENTRY* entry, u32 dirCluster);
-
-/*
-Reads the next directory entry after the one already pointed to by entry
-Places result in entry
-entry will be destroyed even if no directory entry is found
-Returns true on success, false on failure
-*/
-bool _FAT_directory_getNextEntry (PARTITION* partition, DIR_ENTRY* entry);
-
-/*
-Gets the directory entry corrsponding to the supplied path
-entry will be destroyed even if no directory entry is found
-pathEnd specifies the end of the path string, for cutting strings short if needed
- specify NULL to use the full length of path
- pathEnd is only a suggestion, and the path string will be searched up until the next PATH_SEPARATOR
- after pathEND.
-Returns true on success, false on failure
-*/
-bool _FAT_directory_entryFromPath (PARTITION* partition, DIR_ENTRY* entry, const char* path, const char* pathEnd);
-
-/*
-Changes the current directory to the one specified by path
-Returns true on success, false on failure
-*/
-bool _FAT_directory_chdir (PARTITION* partition, const char* path);
-
-/*
-Removes the directory entry specified by entry
-Assumes that entry is valid
-Returns true on success, false on failure
-*/
-bool _FAT_directory_removeEntry (PARTITION* partition, DIR_ENTRY* entry);
-
-/*
-Add a directory entry to the directory specified by dirCluster
-The fileData, dataStart and dataEnd elements of the DIR_ENTRY struct are
-updated with the new directory entry position and alias.
-Returns true on success, false on failure
-*/
-bool _FAT_directory_addEntry (PARTITION* partition, DIR_ENTRY* entry, u32 dirCluster);
-
-/*
-Get the start cluster of a file from it's entry data
-*/
-u32 _FAT_directory_entryGetCluster (const u8* entryData);
-
-/*
-Fill in the file name and entry data of DIR_ENTRY* entry.
-Assumes that the entry's dataStart and dataEnd are correct
-Returns true on success, false on failure
-*/
-bool _FAT_directory_entryFromPosition (PARTITION* partition, DIR_ENTRY* entry);
-
-/*
-Fill in a stat struct based on a file entry
-*/
-void _FAT_directory_entryStat (PARTITION* partition, DIR_ENTRY* entry, struct stat *st);
-
-#endif // _DIRECTORY_H