fat16_mnt.c File Reference

#include <fileio/fileio.h>
#include <io/kio.h>

Go to the source code of this file.

Functions
u32	Fat16TotalClusters (struct FaT16Info *fat)
	Calculate the total number of data clusters in a FAT16 filesystem.
u32	Fat16Mount (u32 partition_lba)
	Mounts the FAT16 filesystem from a given partition LBA.

Variables
struct FaT16Info	fat16
	Holds FAT16 filesystem info and a sector buffer.

Function Documentation

Fat16Mount()

u32 Fat16Mount

(

u32

partition_lba

)

Mounts the FAT16 filesystem from a given partition LBA.

Mounts FAT16 partition and reads filesystem info.

Reads the boot sector, validates the FAT16 signature, and initializes the FAT16 info struct with important filesystem layout details.

Parameters

partition_lba

Logical block address of the FAT16 partition.

Returns

1 on success, 0 on failure (invalid boot sector signature).

Prints mount status and key filesystem layout info via Kprintf.

Definition at line 67 of file fat16_mnt.c.

Fat16TotalClusters()

u32 Fat16TotalClusters

(

struct FaT16Info *

fat

)

Calculate the total number of data clusters in a FAT16 filesystem.

Parameters

fat	Pointer to a FaT16Info struct representing the FAT16 filesystem.

Returns

Number of clusters available in the data region.

This calculates clusters by subtracting reserved, FAT, and root directory sectors from the total sectors and dividing by sectors per cluster.

Definition at line 37 of file fat16_mnt.c.

Variable Documentation

fat16

struct FaT16Info fat16

Holds FAT16 filesystem info and a sector buffer.

Global FAT16 filesystem info struct.

Definition at line 25 of file fat16_mnt.c.