Function create_partition_device

pub fn create_partition_device(
    base_device: Device,
    partition: &PartitionEntry,
) -> Result<PartitionDevice>

Create a partition device from an MBR partition entry.

This function takes a base device and a partition entry from an MBR, and creates a PartitionDevice that represents just that partition. The resulting partition device can be used for all standard device operations, but will only access the sectors allocated to that specific partition.

Arguments

• Base_device - The underlying storage device containing the partition
• Partition - MBR partition entry describing the partition layout

Returns

• Ok(Partition_device_type) - Successfully created partition device
• Err(Error::InvalidParameter) - Partition entry is invalid

Examples

extern crate alloc;
use file_system::*;

let device = create_device!(Memory_device_type::<512>::new(4 * 1024 * 1024));
// First create and write an MBR to the device
let mut mbr = MBR_type::New_with_signature(0x12345678);
mbr.Add_partition(Partition_type_type::Fat32_lba, 2048, 1024, true).unwrap();
mbr.Write_to_device(&device).unwrap();

// Now read it back and create partition device
let mbr = MBR_type::Read_from_device(&device).unwrap();
if let Some(partition) = mbr.get_valid_partitions().first() {
    let partition_device = Create_partition_device(device, partition).unwrap();
    // Now you can use partition_device for I/O operations
}