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// Copyright 2025 syzkaller project authors. All rights reserved.
// Use of this source code is governed by Apache 2 LICENSE that can be found in the LICENSE file.
package osutil
import (
"archive/tar"
"compress/gzip"
"io"
"io/fs"
"os"
"path/filepath"
"strings"
)
func TarGzDirectory(dir string, writer io.Writer) error {
gzw := gzip.NewWriter(writer)
defer gzw.Close()
return tarDirectory(dir, gzw)
}
func tarDirectory(dir string, writer io.Writer) error {
tw := tar.NewWriter(writer)
defer tw.Close()
return filepath.WalkDir(dir, func(path string, d fs.DirEntry, err error) error {
if err != nil || path == dir {
return err
}
typ := d.Type()
if !typ.IsDir() && !typ.IsRegular() {
// Only folders and regular files.
return nil
}
relPath, err := filepath.Rel(dir, path)
if err != nil {
return err
}
relPath = filepath.ToSlash(relPath)
info, err := d.Info()
if err != nil {
return err
}
header, err := tar.FileInfoHeader(info, "")
if err != nil {
return err
}
header.Name = relPath
if typ.IsDir() && !strings.HasSuffix(header.Name, "/") {
header.Name += "/"
}
if err := tw.WriteHeader(header); err != nil {
return err
}
if typ.IsDir() {
return nil
}
// Write the file content.
f, err := os.Open(path)
if err != nil {
return err
}
_, err = io.Copy(tw, f)
f.Close()
return err
})
}
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