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52 lines
1.7 KiB
Go
52 lines
1.7 KiB
Go
package fs
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import (
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"io"
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"github.com/restic/restic/internal/restic"
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)
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// FS bundles all methods needed for a file system.
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type FS interface {
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// OpenFile opens a file or directory for reading.
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//
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// If metadataOnly is set, an implementation MUST return a File object for
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// arbitrary file types including symlinks. The implementation may internally use
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// the given file path or a file handle. In particular, an implementation may
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// delay actually accessing the underlying filesystem.
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//
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// Only the O_NOFOLLOW and O_DIRECTORY flags are supported.
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OpenFile(name string, flag int, metadataOnly bool) (File, error)
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Lstat(name string) (*ExtendedFileInfo, error)
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Join(elem ...string) string
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Separator() string
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Abs(path string) (string, error)
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Clean(path string) string
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VolumeName(path string) string
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IsAbs(path string) bool
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Dir(path string) string
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Base(path string) string
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}
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// File is an open file on a file system. When opened as metadataOnly, an
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// implementation may opt to perform filesystem operations using the filepath
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// instead of actually opening the file.
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type File interface {
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// MakeReadable reopens a File that was opened metadataOnly for reading.
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// The method must not be called for files that are opened for reading.
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// If possible, the underlying file should be reopened atomically.
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// MakeReadable must work for files and directories.
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MakeReadable() error
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io.Reader
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io.Closer
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Readdirnames(n int) ([]string, error)
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Stat() (*ExtendedFileInfo, error)
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// ToNode returns a restic.Node for the File. The internally used os.FileInfo
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// must be consistent with that returned by Stat(). In particular, the metadata
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// returned by consecutive calls to Stat() and ToNode() must match.
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ToNode(ignoreXattrListError bool) (*restic.Node, error)
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}
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