mirror of
https://github.com/Fledge68/WiiFlow_Lite.git
synced 2024-12-27 12:21:57 +01:00
30bc03c9fa
-updated libext2fs to e2fsprogs 1.42 -updated libfat to R4883 Thanks to USB Loader GX for the new libs
182 lines
6.2 KiB
C
182 lines
6.2 KiB
C
/*
|
|
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.
|
|
*/
|
|
|
|
#ifndef _DIRECTORY_H
|
|
#define _DIRECTORY_H
|
|
|
|
#include <sys/stat.h>
|
|
|
|
#include "common.h"
|
|
#include "partition.h"
|
|
|
|
#define DIR_ENTRY_DATA_SIZE 0x20
|
|
#define MAX_LFN_LENGTH 256
|
|
#define MAX_FILENAME_LENGTH 768 // 256 UCS-2 characters encoded into UTF-8 can use up to 768 UTF-8 chars
|
|
#define MAX_ALIAS_LENGTH 13
|
|
#define LFN_ENTRY_LENGTH 13
|
|
#define ALIAS_ENTRY_LENGTH 11
|
|
#define MAX_ALIAS_EXT_LENGTH 3
|
|
#define MAX_ALIAS_PRI_LENGTH 8
|
|
#define MAX_NUMERIC_TAIL 999999
|
|
#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
|
|
|
|
#define CASE_LOWER_EXT 0x10 // WinNT lowercase extension
|
|
#define CASE_LOWER_BASE 0x08 // WinNT lowercase basename
|
|
|
|
typedef enum {FT_DIRECTORY, FT_FILE} FILE_TYPE;
|
|
|
|
typedef struct {
|
|
uint32_t cluster;
|
|
sec_t sector;
|
|
int32_t offset;
|
|
} DIR_ENTRY_POSITION;
|
|
|
|
typedef struct {
|
|
uint8_t 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 filename[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_caseInfo = 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->filename[0] == '.') && ((entry->filename[1] == '\0') ||
|
|
((entry->filename[1] == '.') && entry->filename[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, uint32_t 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, uint32_t dirCluster);
|
|
|
|
/*
|
|
Get the start cluster of a file from it's entry data
|
|
*/
|
|
uint32_t _FAT_directory_entryGetCluster (PARTITION* partition, const uint8_t* 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);
|
|
|
|
/*
|
|
Get volume label
|
|
*/
|
|
bool _FAT_directory_getVolumeLabel (PARTITION* partition, char *label);
|
|
|
|
#endif // _DIRECTORY_H
|