thin-provisioning-tools/src/thin/device_detail.rs
2021-03-24 14:20:20 +00:00

63 lines
1.6 KiB
Rust

use anyhow::Result;
use byteorder::{LittleEndian, WriteBytesExt};
use nom::{number::complete::*, IResult};
use std::fmt;
use crate::pdata::unpack::*;
//------------------------------------------
#[derive(Clone, Copy)]
pub struct DeviceDetail {
pub mapped_blocks: u64,
pub transaction_id: u64,
pub creation_time: u32,
pub snapshotted_time: u32,
}
impl fmt::Display for DeviceDetail {
fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
write!(
f,
"mapped = {}, trans = {}, create = {}, snap = {}",
self.mapped_blocks, self.transaction_id, self.creation_time, self.snapshotted_time
)?;
Ok(())
}
}
impl Unpack for DeviceDetail {
fn disk_size() -> u32 {
24
}
fn unpack(i: &[u8]) -> IResult<&[u8], DeviceDetail> {
let (i, mapped_blocks) = le_u64(i)?;
let (i, transaction_id) = le_u64(i)?;
let (i, creation_time) = le_u32(i)?;
let (i, snapshotted_time) = le_u32(i)?;
Ok((
i,
DeviceDetail {
mapped_blocks,
transaction_id,
creation_time,
snapshotted_time,
},
))
}
}
impl Pack for DeviceDetail {
fn pack<W: WriteBytesExt>(&self, w: &mut W) -> Result<()> {
w.write_u64::<LittleEndian>(self.mapped_blocks)?;
w.write_u64::<LittleEndian>(self.transaction_id)?;
w.write_u32::<LittleEndian>(self.creation_time)?;
w.write_u32::<LittleEndian>(self.snapshotted_time)?;
Ok(())
}
}
//------------------------------------------