royalcat/tstor
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages 1 Wiki Activity Actions

filehash random read
Some checks failed
docker / build-docker (push) Failing after 1m22s
Details

Browse source
This commit is contained in:
royalcat 2024-12-10 00:29:59 +03:00
parent 2d9dcd87fa
commit 62a25d3dd7
1 changed files with 2 additions and 16 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

18
src/vfs/hash.go
View file

@ -5,7 +5,6 @@ import (
"encoding/binary"
"errors"
"fmt"
"io"
)
const chunkSize int64 = 64 * 1024
@ -18,11 +17,6 @@ func FileHash(ctx context.Context, f File) (Hash, error) {
ctx, span := tracer.Start(ctx, "FileHash")
defer span.End()
_, err := f.Seek(0, io.SeekStart)
if err != nil {
return "", fmt.Errorf("error seeking file: %w", err)
}
defer f.Seek(0, io.SeekStart)
fileSize := f.Size()
if fileSize <= 8 {
return "", fmt.Errorf("cannot calculate oshash where size < 8 (%d)", fileSize)
@ -37,20 +31,12 @@ func FileHash(ctx context.Context, f File) (Hash, error) {
head := make([]byte, fileChunkSize)
tail := make([]byte, fileChunkSize)
// read the head of the file into the start of the buffer
_, err = f.Read(ctx, head)
_, err := f.ReadAt(ctx, head, 0)
if err != nil {
return "", err
}
// seek to the end of the file - the chunk size
_, err = f.Seek(-fileChunkSize, io.SeekEnd)
if err != nil {
return "", err
}
// read the tail of the file
_, err = f.Read(ctx, tail)
_, err = f.ReadAt(ctx, tail, fileSize-fileChunkSize)
if err != nil {
return "", err
}