61 lines
1.3 KiB
Rust
61 lines
1.3 KiB
Rust
use crate::block_manager::*;
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use crate::checksum::*;
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const SPACE_MAP_ROOT_SIZE: usize = 128;
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pub struct Superblock {
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block: u64,
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uuid: String,
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version: u32,
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time: u32,
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transaction_id: u64,
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metadata_snap: u64,
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data_sm_root: [u8; SPACE_MAP_ROOT_SIZE],
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metadata_sn_root: [u8; SPACE_MAP_ROOT_SIZE],
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mapping_root: u64,
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details_root: u64,
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data_block_size: u32,
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}
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pub enum CheckSeverity {
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Fatal,
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NonFatal,
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}
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pub trait CheckError {
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fn severity(&self) -> CheckSeverity;
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fn block(&self) -> u64;
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fn sub_errors(&self) -> Vec<Box<dyn CheckError>>;
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}
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enum ErrorType {
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BadChecksum,
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BadBlockType(&'static str),
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BadBlock(u64),
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BadVersion(u32),
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MetadataSnapOutOfBounds(u64),
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MappingRootOutOfBounds(u64),
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DetailsRootOutOfBounds(u64),
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}
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struct SuperblockError {
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severity: CheckSeverity,
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kind: ErrorType,
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}
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use SuperblockDamage::*;
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//------------------------------
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pub fn check_type(b: &Block) -> Result<(), Box<dyn CheckError>> {
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match metadata_block_type(&b.data[0..]) {
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SUPERBLOCK => Ok(()),
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NODE => Err(Box::new(BadBlockType("BTree Node"))),
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INDEX => Err(Box::new(BadBlockType("Space Map Index"))),
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BITMAP => Err(Box::new(BadBlockType("Space Map Bitmap"))),
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UNKNOWN => Err(Box::new(BadChecksum)),
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}
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}
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//------------------------------
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