exfat_geom_t Struct Reference

Resolved exFAT volume geometry produced by priv_exfat_geometry. More...

Data Fields
uint64_t	part_lba
	Partition start LBA (VBR sits here, not 0).
uint64_t	total_sectors
	Partition sector count (VolumeLength).
uint32_t	bps
	Device sector size in bytes.
uint8_t	bps_shift
	BytesPerSectorShift (log2 of bps).
uint8_t	spc_shift
	SectorsPerClusterShift (log2).
uint32_t	spc
	Sectors per cluster (1 << spc_shift).
uint32_t	fat_offset
	FatOffset (sectors from VBR).
uint32_t	fat_length
	FatLength (sectors).
uint32_t	heap_offset
	ClusterHeapOffset (sectors from VBR).
uint32_t	cluster_count
	ClusterCount.
uint32_t	bitmap_bytes
	Allocation-bitmap logical size (DataLength).
uint32_t	bitmap_clusters
	Clusters the bitmap occupies.
uint32_t	upcase_cluster
	First cluster of the up-case table.
uint32_t	upcase_clusters
	Clusters the up-case table occupies.
uint32_t	root_cluster
	First cluster of the root directory.
uint32_t	used_clusters
	bitmap + up-case + root (pre-allocated).

Detailed Description

Resolved exFAT volume geometry produced by priv_exfat_geometry.

Definition at line 30 of file ra8_fs_fat_exfat_fmt.c.

Field Documentation

bitmap_bytes

uint32_t exfat_geom_t::bitmap_bytes

Allocation-bitmap logical size (DataLength).

Definition at line 41 of file ra8_fs_fat_exfat_fmt.c.

Referenced by internal_exfat_geometry(), and internal_exfat_write_root().

bitmap_clusters

uint32_t exfat_geom_t::bitmap_clusters

Clusters the bitmap occupies.

Definition at line 42 of file ra8_fs_fat_exfat_fmt.c.

Referenced by internal_exfat_geometry(), internal_exfat_write_bitmap(), and internal_exfat_write_fat().

bps

uint32_t exfat_geom_t::bps

Device sector size in bytes.

Definition at line 33 of file ra8_fs_fat_exfat_fmt.c.

Referenced by internal_exfat_build_vbr(), internal_exfat_geometry(), internal_exfat_write_bitmap(), internal_exfat_write_boot(), internal_exfat_write_boot_tail(), internal_exfat_write_fat(), and internal_exfat_write_root().

bps_shift

uint8_t exfat_geom_t::bps_shift

BytesPerSectorShift (log2 of bps).

Definition at line 34 of file ra8_fs_fat_exfat_fmt.c.

Referenced by internal_exfat_build_vbr(), and internal_exfat_geometry().

cluster_count

uint32_t exfat_geom_t::cluster_count

ClusterCount.

Definition at line 40 of file ra8_fs_fat_exfat_fmt.c.

Referenced by internal_exfat_build_vbr(), and internal_exfat_geometry().

fat_length

uint32_t exfat_geom_t::fat_length

FatLength (sectors).

Definition at line 38 of file ra8_fs_fat_exfat_fmt.c.

Referenced by internal_exfat_build_vbr(), internal_exfat_geometry(), and internal_exfat_write_fat().

fat_offset

uint32_t exfat_geom_t::fat_offset

FatOffset (sectors from VBR).

Definition at line 37 of file ra8_fs_fat_exfat_fmt.c.

Referenced by internal_exfat_build_vbr(), internal_exfat_geometry(), and internal_exfat_write_fat().

heap_offset

uint32_t exfat_geom_t::heap_offset

ClusterHeapOffset (sectors from VBR).

Definition at line 39 of file ra8_fs_fat_exfat_fmt.c.

Referenced by internal_exfat_build_vbr(), internal_exfat_geometry(), internal_exfat_write_bitmap(), internal_exfat_write_root(), and priv_exfat_format().

part_lba

uint64_t exfat_geom_t::part_lba

Partition start LBA (VBR sits here, not 0).

Definition at line 31 of file ra8_fs_fat_exfat_fmt.c.

Referenced by internal_exfat_build_vbr(), internal_exfat_write_bitmap(), internal_exfat_write_boot(), internal_exfat_write_boot_tail(), internal_exfat_write_fat(), internal_exfat_write_root(), and priv_exfat_format().

root_cluster

uint32_t exfat_geom_t::root_cluster

First cluster of the root directory.

Definition at line 45 of file ra8_fs_fat_exfat_fmt.c.

Referenced by internal_exfat_build_vbr(), internal_exfat_geometry(), internal_exfat_write_fat(), internal_exfat_write_root(), and priv_exfat_format().

spc

uint32_t exfat_geom_t::spc

Sectors per cluster (1 << spc_shift).

Definition at line 36 of file ra8_fs_fat_exfat_fmt.c.

Referenced by internal_exfat_geometry(), internal_exfat_write_bitmap(), internal_exfat_write_root(), and priv_exfat_format().

spc_shift

uint8_t exfat_geom_t::spc_shift

SectorsPerClusterShift (log2).

Definition at line 35 of file ra8_fs_fat_exfat_fmt.c.

Referenced by internal_exfat_build_vbr(), and internal_exfat_geometry().

total_sectors

uint64_t exfat_geom_t::total_sectors

Partition sector count (VolumeLength).

Definition at line 32 of file ra8_fs_fat_exfat_fmt.c.

Referenced by internal_exfat_build_vbr(), and internal_exfat_geometry().

upcase_cluster

uint32_t exfat_geom_t::upcase_cluster

First cluster of the up-case table.

Definition at line 43 of file ra8_fs_fat_exfat_fmt.c.

Referenced by internal_exfat_geometry(), internal_exfat_write_fat(), internal_exfat_write_root(), and priv_exfat_format().

upcase_clusters

uint32_t exfat_geom_t::upcase_clusters

Clusters the up-case table occupies.

Definition at line 44 of file ra8_fs_fat_exfat_fmt.c.

Referenced by internal_exfat_geometry(), and internal_exfat_write_fat().

used_clusters

uint32_t exfat_geom_t::used_clusters

bitmap + up-case + root (pre-allocated).

Definition at line 46 of file ra8_fs_fat_exfat_fmt.c.

Referenced by internal_exfat_geometry(), and internal_exfat_write_bitmap().

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The documentation for this struct was generated from the following file:

• libs/ra8_fs/src/ra8_fs_fat_exfat_fmt.c