Implementing backup methods

1 files changed, 41 insertions, 0 deletions

diff --git a/fs/fs.go b/fs/fs.go
new file mode 100644
index 0000000..cbfeb44
--- /dev/null
+++ b/fs/fs.go
@@ -0,0 +1,41 @@
+package fs
+
+import (
+	"io"
+	"time"
+)
+
+type FileType string
+
+const (
+	FFile    FileType = "file"
+	FDir     FileType = "dir"
+	FSymlink FileType = "symlink"
+)
+
+type File interface {
+	Type() FileType // Depending on type, the File must also implement RegularFile (FFile), Dir (FDir) or Symlink (FSymlink)
+	Name() string
+	Executable() bool // For now we will only record the executable bit instead of all permission bits
+	ModTime() time.Time
+	Delete() error
+}
+
+type RegularFile interface {
+	File
+	Open() (io.ReadWriteCloser, error)
+}
+
+type Dir interface {
+	File
+	Readdir() ([]File, error)
+
+	CreateChildFile(name string, exec bool) (RegularFile, error)
+	CreateChildDir(name string) (Dir, error)
+	CreateChildSymlink(name string, target string) (Symlink, error)
+}
+
+type Symlink interface {
+	File
+	Readlink() (string, error)
+}