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fatfs.c File Reference


Detailed Description

FAT file system code to handle basic file system processing for opening file system, processing sectors, and directory entries.

#include "fs_tools_i.h"
#include "fatfs.h"

Functions

int8_t is_clustalloc (FATFS_INFO *fatfs, DADDR_T clust)
int8_t is_sectalloc (FATFS_INFO *fatfs, DADDR_T sect)
uint8_t fatfs_block_walk (TSK_FS_INFO *fs, DADDR_T start_blk, DADDR_T end_blk, TSK_FS_BLOCK_FLAG_ENUM flags, TSK_FS_BLOCK_WALK_CB action, void *ptr)
uint8_t fatfs_dinode_copy (FATFS_INFO *fatfs, TSK_FS_INODE *fs_inode, fatfs_dentry *in, DADDR_T sect, INUM_T inum)
 Copy the contents of a raw directry entry into a TSK_FS_INFO structure.
uint8_t fatfs_make_root (FATFS_INFO *fatfs, TSK_FS_INODE *fs_inode)
 Create an FS_INODE structure for the root directory.
uint8_t fatfs_isdentry (FATFS_INFO *fatfs, fatfs_dentry *de)
uint8_t fatfs_inode_walk (TSK_FS_INFO *fs, INUM_T start_inum, INUM_T end_inum, TSK_FS_INODE_FLAG_ENUM flags, TSK_FS_INODE_WALK_CB action, void *ptr)
uint8_t fatfs_jopen (TSK_FS_INFO *fs, INUM_T inum)
uint8_t fatfs_jentry_walk (TSK_FS_INFO *fs, int flags, TSK_FS_JENTRY_WALK_CB action, void *ptr)
uint8_t fatfs_jblk_walk (TSK_FS_INFO *fs, DADDR_T start, DADDR_T end, int flags, TSK_FS_JBLK_WALK_CB action, void *ptr)
TSK_FS_INFOfatfs_open (TSK_IMG_INFO *img_info, SSIZE_T offset, TSK_FS_INFO_TYPE_ENUM ftype, uint8_t test)


Function Documentation

uint8_t fatfs_dinode_copy FATFS_INFO *  fatfs,
TSK_FS_INODE fs_inode,
fatfs_dentry *  in,
DADDR_T  sect,
INUM_T  inum
 

Copy the contents of a raw directry entry into a TSK_FS_INFO structure.

Parameters:
fatfs File system that directory entry is from
fs_inode Generic inode structure to copy data into
in Directory entry to copy data from
sect Sector address where directory entry is from -- used to determine allocation status.
inum Address of the inode.
Returns:
1 on error and 0 on success. Errors should only occur for Unicode conversion problems and when this occurs the name will be NULL terminated (but with unknown contents).

uint8_t fatfs_make_root FATFS_INFO *  fatfs,
TSK_FS_INODE fs_inode
 

Create an FS_INODE structure for the root directory.

FAT does not have a directory entry for the root directory, but this function collects the needed data to make one.

Parameters:
fatfs File system to analyze
fs_inode Inode structure to copy root directory information into.
Returns:
1 on error and 0 on success


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