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index file readers: aquire shared lock

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This commit is contained in:
Dietmar Maurer
2019-03-27 10:11:14 +01:00
parent 0465218953
commit c597a92c81
2 changed files with 8 additions and 0 deletions
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4
src/backup/dynamic_index.rs
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@ -58,6 +58,10 @@ impl DynamicIndexReader {
let mut file = std::fs::File::open(&full_path)?; let mut file = std::fs::File::open(&full_path)?;
if let Err(err) = nix::fcntl::flock(file.as_raw_fd(), nix::fcntl::FlockArg::LockSharedNonblock) {
bail!("unable to get shared lock on {:?} - {}", full_path, err);
}
let header_size = std::mem::size_of::<DynamicIndexHeader>(); let header_size = std::mem::size_of::<DynamicIndexHeader>();
// todo: use static assertion when available in rust // todo: use static assertion when available in rust

4
src/backup/fixed_index.rs
View File

@ -57,6 +57,10 @@ impl FixedIndexReader {
let mut file = std::fs::File::open(&full_path)?; let mut file = std::fs::File::open(&full_path)?;
if let Err(err) = nix::fcntl::flock(file.as_raw_fd(), nix::fcntl::FlockArg::LockSharedNonblock) {
bail!("unable to get shared lock on {:?} - {}", full_path, err);
}
let header_size = std::mem::size_of::<FixedIndexHeader>(); let header_size = std::mem::size_of::<FixedIndexHeader>();
// todo: use static assertion when available in rust // todo: use static assertion when available in rust