2546446d51
Having more than 4GiB files is quite possible (think about the NixOS graphical installer, and an uncompressed iso of it). No wire format changes. Change-Id: Ia78a07e4c554e91b93c5b9f8533266e4bd7f22b6 Reviewed-on: https://cl.tvl.fyi/c/depot/+/9950 Reviewed-by: tazjin <tazjin@tvl.su> Tested-by: BuildkiteCI
70 lines
2.6 KiB
Rust
70 lines
2.6 KiB
Rust
//! This module contains all the data structures used to track information
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//! about inodes, which present tvix-store nodes in a filesystem.
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use tvix_castore::proto as castorepb;
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use tvix_castore::B3Digest;
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#[derive(Clone, Debug)]
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pub enum InodeData {
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Regular(B3Digest, u64, bool), // digest, size, executable
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Symlink(bytes::Bytes), // target
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Directory(DirectoryInodeData), // either [DirectoryInodeData:Sparse] or [DirectoryInodeData:Populated]
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}
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/// This encodes the two different states of [InodeData::Directory].
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/// Either the data still is sparse (we only saw a [castorepb::DirectoryNode],
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/// but didn't fetch the [castorepb::Directory] struct yet, or we processed a
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/// lookup and did fetch the data.
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#[derive(Clone, Debug)]
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pub enum DirectoryInodeData {
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Sparse(B3Digest, u64), // digest, size
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Populated(B3Digest, Vec<(u64, castorepb::node::Node)>), // [(child_inode, node)]
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}
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impl From<&castorepb::node::Node> for InodeData {
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fn from(value: &castorepb::node::Node) -> Self {
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match value {
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castorepb::node::Node::Directory(directory_node) => directory_node.into(),
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castorepb::node::Node::File(file_node) => file_node.into(),
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castorepb::node::Node::Symlink(symlink_node) => symlink_node.into(),
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}
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}
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}
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impl From<&castorepb::SymlinkNode> for InodeData {
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fn from(value: &castorepb::SymlinkNode) -> Self {
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InodeData::Symlink(value.target.clone())
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}
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}
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impl From<&castorepb::FileNode> for InodeData {
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fn from(value: &castorepb::FileNode) -> Self {
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InodeData::Regular(
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value.digest.clone().try_into().unwrap(),
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value.size,
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value.executable,
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)
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}
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}
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/// Converts a DirectoryNode to a sparsely populated InodeData::Directory.
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impl From<&castorepb::DirectoryNode> for InodeData {
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fn from(value: &castorepb::DirectoryNode) -> Self {
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InodeData::Directory(DirectoryInodeData::Sparse(
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value.digest.clone().try_into().unwrap(),
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value.size,
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))
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}
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}
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/// converts a proto::Directory to a InodeData::Directory(DirectoryInodeData::Populated(..)).
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/// The inodes for each child are 0, because it's up to the InodeTracker to allocate them.
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impl From<castorepb::Directory> for InodeData {
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fn from(value: castorepb::Directory) -> Self {
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let digest = value.digest();
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let children: Vec<(u64, castorepb::node::Node)> =
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value.nodes().map(|node| (0, node)).collect();
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InodeData::Directory(DirectoryInodeData::Populated(digest, children))
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}
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}
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