Deprecate local file support in authfs
Local file was supported during early development, but it's not actually
used.
The names in FileConfig enum are renamed to make linter happy (which
is reasonable since all files are now remote).
Bug: 203251769
Test: atest AuthFsHostTest authfs_device_test_src_lib
Change-Id: I9f1f800453695c84fe4fc15a89b5a434fdaa0331
diff --git a/authfs/src/fsverity/verifier.rs b/authfs/src/fsverity/verifier.rs
index 1f21b13..4a18c6a 100644
--- a/authfs/src/fsverity/verifier.rs
+++ b/authfs/src/fsverity/verifier.rs
@@ -173,10 +173,42 @@
mod tests {
use super::*;
use crate::auth::FakeAuthenticator;
- use crate::file::{LocalFileReader, ReadByChunk};
+ use crate::file::ReadByChunk;
use anyhow::Result;
+ use std::cmp::min;
use std::fs::{self, File};
use std::io::Read;
+ use std::os::unix::fs::FileExt;
+
+ struct LocalFileReader {
+ file: File,
+ size: u64,
+ }
+
+ impl LocalFileReader {
+ fn new(file: File) -> io::Result<LocalFileReader> {
+ let size = file.metadata()?.len();
+ Ok(LocalFileReader { file, size })
+ }
+
+ fn len(&self) -> u64 {
+ self.size
+ }
+ }
+
+ impl ReadByChunk for LocalFileReader {
+ fn read_chunk(&self, chunk_index: u64, buf: &mut ChunkBuffer) -> io::Result<usize> {
+ let start = chunk_index * CHUNK_SIZE;
+ if start >= self.size {
+ return Ok(0);
+ }
+ let end = min(self.size, start + CHUNK_SIZE);
+ let read_size = (end - start) as usize;
+ debug_assert!(read_size <= buf.len());
+ self.file.read_exact_at(&mut buf[..read_size], start)?;
+ Ok(read_size)
+ }
+ }
type LocalVerifiedFileReader = VerifiedFileReader<LocalFileReader, LocalFileReader>;