tyler/proxmox-backup
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src/backup/*_index.rs: used generated magic numbers

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This commit is contained in:
Dietmar Maurer
2019-06-14 14:58:37 +02:00
parent bffd40d6b7
commit a7dd483097
3 changed files with 16 additions and 25 deletions
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20
src/backup/fixed_index.rs
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@ -17,16 +17,14 @@ use super::ChunkInfo;
/// Header format definition for fixed index files (`.fidx`)
#[repr(C)]
pub struct FixedIndexHeader {
/// The string `PROXMOX-FIDX`
pub magic: [u8; 12],
pub version: u32,
pub magic: [u8; 8],
pub uuid: [u8; 16],
pub ctime: u64,
pub size: u64,
pub chunk_size: u64,
/// Sha256 over the index ``SHA256(digest1||digest2||...)``
pub index_csum: [u8; 32],
reserved: [u8; 4008], // overall size is one page (4096 bytes)
pub size: u64,
pub chunk_size: u64,
reserved: [u8; 4016], // overall size is one page (4096 bytes)
}
// split image into fixed size chunks
@ -78,15 +76,10 @@ impl FixedIndexReader {
let header = unsafe { &mut * (buffer.as_ptr() as *mut FixedIndexHeader) };
if header.magic != *b"PROXMOX-FIDX" {
if header.magic != super::FIXED_SIZED_CHUNK_INDEX_1_0 {
bail!("got unknown magic number for {:?}", path);
}
let version = u32::from_le(header.version);
if version != 1 {
bail!("got unsupported version number ({})", version);
}
let size = u64::from_le(header.size) as usize;
let ctime = u64::from_le(header.ctime);
let chunk_size = u64::from_le(header.chunk_size) as usize;
@ -244,8 +237,7 @@ impl FixedIndexWriter {
let buffer = vec![0u8; header_size];
let header = unsafe { &mut * (buffer.as_ptr() as *mut FixedIndexHeader) };
header.magic = *b"PROXMOX-FIDX";
header.version = u32::to_le(1);
header.magic = super::FIXED_SIZED_CHUNK_INDEX_1_0;
header.ctime = u64::to_le(ctime);
header.size = u64::to_le(size as u64);
header.chunk_size = u64::to_le(chunk_size as u64);