Module blkdev_scheme 

Block-device scheme : exposes raw disk devices under /dev.

Namespace layout

/dev/          : directory listing (this scheme root)
/dev/sda       : first SATA disk (AHCI port 0), raw byte-addressable

I/O model

The AHCI driver operates on 512-byte sectors. This scheme accepts arbitrary byte offsets and lengths and performs the necessary sector-aligned read/modify/write internally using a stack-allocated 512-byte bounce buffer.

VFS wiring

BlkDevScheme implements the kernel Scheme trait so it can be mounted with vfs::mount::mount("/dev", Arc::new(BlkDevScheme)) during vfs::init().

Structs

BlkDevScheme

Kernel scheme that serves raw block devices as files under /dev.

Constants

FID_NULL 🔒

FID_RANDOM 🔒

FID_ROOT 🔒

FID_SDA 🔒

FID_URANDOM 🔒

FID_VDA 🔒

FID_ZERO 🔒

RDEV_NULL 🔒

RDEV_RANDOM 🔒

RDEV_SDA 🔒

RDEV_URANDOM 🔒

RDEV_VDA 🔒

RDEV_ZERO 🔒

Statics

PRNG_STATE 🔒

Functions

prng_fill 🔒

Performs the prng fill operation.

sector_read 🔒

Read buf.len() bytes from the block device starting at byte offset.

sector_write 🔒

Write data bytes to the block device starting at byte offset.

try_direct_async_request 🔒