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// Copyright 2021 Colin Finck <colin@reactos.org>
// SPDX-License-Identifier: GPL-2.0-or-later
use crate::attribute::NtfsAttributeType;
use crate::error::{NtfsError, Result};
use crate::structured_values::{NtfsStructuredValue, NtfsStructuredValueFromSlice};
use binread::io::Cursor;
use binread::{BinRead, BinReaderExt};
use bitflags::bitflags;
/// Size of all [`VolumeInformationData`] fields.
const VOLUME_INFORMATION_SIZE: usize = 12;
#[derive(BinRead, Clone, Debug)]
struct VolumeInformationData {
reserved: u64,
major_version: u8,
minor_version: u8,
flags: u16,
}
bitflags! {
pub struct NtfsVolumeFlags: u16 {
/// The volume needs to be checked by `chkdsk`.
const IS_DIRTY = 0x0001;
const RESIZE_LOG_FILE = 0x0002;
const UPGRADE_ON_MOUNT = 0x0004;
const MOUNTED_ON_NT4 = 0x0008;
const DELETE_USN_UNDERWAY = 0x0010;
const REPAIR_OBJECT_ID = 0x0020;
const CHKDSK_UNDERWAY = 0x4000;
const MODIFIED_BY_CHKDSK = 0x8000;
}
}
#[derive(Clone, Debug)]
pub struct NtfsVolumeInformation {
info: VolumeInformationData,
}
impl NtfsVolumeInformation {
pub fn flags(&self) -> NtfsVolumeFlags {
NtfsVolumeFlags::from_bits_truncate(self.info.flags)
}
pub fn major_version(&self) -> u8 {
self.info.major_version
}
pub fn minor_version(&self) -> u8 {
self.info.minor_version
}
}
impl NtfsStructuredValue for NtfsVolumeInformation {
const TY: NtfsAttributeType = NtfsAttributeType::VolumeInformation;
}
impl<'s> NtfsStructuredValueFromSlice<'s> for NtfsVolumeInformation {
fn from_slice(slice: &'s [u8], position: u64) -> Result<Self> {
if slice.len() < VOLUME_INFORMATION_SIZE {
return Err(NtfsError::InvalidStructuredValueSize {
position,
ty: NtfsAttributeType::StandardInformation,
expected: VOLUME_INFORMATION_SIZE,
actual: slice.len(),
});
}
let mut cursor = Cursor::new(slice);
let info = cursor.read_le::<VolumeInformationData>()?;
Ok(Self { info })
}
}
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