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78 lines
2.2 KiB
Go
78 lines
2.2 KiB
Go
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// Copyright (C) 2016 The Syncthing Authors.
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//
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// This Source Code Form is subject to the terms of the Mozilla Public
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// License, v. 2.0. If a copy of the MPL was not distributed with this file,
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// You can obtain one at http://mozilla.org/MPL/2.0/.
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package fs
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import (
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"errors"
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"io"
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"time"
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)
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type LinkTargetType int
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const (
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LinkTargetFile LinkTargetType = iota
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LinkTargetDirectory
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LinkTargetUnknown
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)
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// The Filesystem interface abstracts access to the file system.
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type Filesystem interface {
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ChangeSymlinkType(name string, tt LinkTargetType) error
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Chmod(name string, mode FileMode) error
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Chtimes(name string, atime time.Time, mtime time.Time) error
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Create(name string) (File, error)
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CreateSymlink(name, target string, tt LinkTargetType) error
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DirNames(name string) ([]string, error)
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Lstat(name string) (FileInfo, error)
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Mkdir(name string, perm FileMode) error
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Open(name string) (File, error)
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ReadSymlink(name string) (string, LinkTargetType, error)
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Remove(name string) error
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Rename(oldname, newname string) error
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Stat(name string) (FileInfo, error)
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SymlinksSupported() bool
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Walk(root string, walkFn WalkFunc) error
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}
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// The File interface abstracts access to a regular file, being a somewhat
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// smaller interface than os.File
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type File interface {
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io.Reader
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io.WriterAt
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io.Closer
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Truncate(size int64) error
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}
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// The FileInfo interface is almost the same as os.FileInfo, but with the
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// Sys method removed (as we don't want to expose whatever is underlying)
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// and with a couple of convenience methods added.
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type FileInfo interface {
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// Standard things present in os.FileInfo
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Name() string
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Mode() FileMode
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Size() int64
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ModTime() time.Time
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IsDir() bool
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// Extensions
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IsRegular() bool
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IsSymlink() bool
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}
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// FileMode is similar to os.FileMode
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type FileMode uint32
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// DefaultFilesystem is the fallback to use when nothing explicitly has
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// been passed.
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var DefaultFilesystem Filesystem = new(BasicFilesystem)
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// SkipDir is used as a return value from WalkFuncs to indicate that
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// the directory named in the call is to be skipped. It is not returned
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// as an error by any function.
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var errSkipDir = errors.New("skip this directory")
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var SkipDir = errSkipDir // silences the lint warning...
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