FAT access
[FAT support]

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Detailed Description

Basic functions for handling a FAT filesystem.

Functions
struct fat_fs_struct *	fat_open (struct partition_struct *partition)
	Opens a FAT filesystem.
void	fat_close (struct fat_fs_struct *fs)
	Closes a FAT filesystem.
offset_t	fat_get_fs_size (const struct fat_fs_struct *fs)
	Returns the amount of total storage capacity of the filesystem in bytes.
offset_t	fat_get_fs_free (const struct fat_fs_struct *fs)
	Returns the amount of free storage capacity on the filesystem in bytes.
uint8_t	fat_get_fs_free_32_callback (uint8_t *buffer, offset_t offset, void *p)
	Callback function used for counting free clusters in a FAT32.

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Function Documentation

void fat_close

(

struct fat_fs_struct *

fs

)

Closes a FAT filesystem.

When this function returns, the given filesystem descriptor will be invalid.

Parameters:

[in]

fs

The filesystem to close.

See also:

fat_open

offset_t fat_get_fs_free

(

const struct fat_fs_struct *

fs

)

Returns the amount of free storage capacity on the filesystem in bytes.

Note:

As the FAT filesystem is cluster based, this function does not return continuous values but multiples of the cluster size.

Parameters:

[in]

fs

The filesystem on which to operate.

Returns:

0 on failure, the free filesystem space in bytes otherwise.

offset_t fat_get_fs_size

(

const struct fat_fs_struct *

fs

)

Returns the amount of total storage capacity of the filesystem in bytes.

Parameters:

[in]

fs

The filesystem on which to operate.

Returns:

0 on failure, the filesystem size in bytes otherwise.

struct fat_fs_struct* fat_open

(

struct partition_struct *

partition

)

[read]

Opens a FAT filesystem.

Parameters:

[in]

partition

Discriptor of partition on which the filesystem resides.

Returns:

0 on error, a FAT filesystem descriptor on success.

See also:

fat_close