84 lines
1.8 KiB
Go
84 lines
1.8 KiB
Go
// Copyright (c) Tailscale Inc & AUTHORS
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// SPDX-License-Identifier: BSD-3-Clause
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package driveimpl
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import (
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"context"
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"io/fs"
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"os"
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"time"
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"github.com/djherbis/times"
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"github.com/tailscale/xnet/webdav"
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)
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// birthTimingFS extends a webdav.FileSystem to return FileInfos that implement
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// the webdav.BirthTimer interface.
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type birthTimingFS struct {
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webdav.FileSystem
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}
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func (fs *birthTimingFS) Stat(ctx context.Context, name string) (os.FileInfo, error) {
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fi, err := fs.FileSystem.Stat(ctx, name)
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if err != nil {
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return nil, err
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}
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return &birthTimingFileInfo{fi}, nil
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}
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func (fs *birthTimingFS) OpenFile(ctx context.Context, name string, flag int, perm os.FileMode) (webdav.File, error) {
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f, err := fs.FileSystem.OpenFile(ctx, name, flag, perm)
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if err != nil {
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return nil, err
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}
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return &birthTimingFile{f}, nil
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}
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// birthTimingFileInfo extends an os.FileInfo to implement the BirthTimer
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// interface.
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type birthTimingFileInfo struct {
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os.FileInfo
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}
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func (fi *birthTimingFileInfo) BirthTime(ctx context.Context) (time.Time, error) {
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if fi.Sys() == nil {
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return time.Time{}, webdav.ErrNotImplemented
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}
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if !times.HasBirthTime {
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return time.Time{}, webdav.ErrNotImplemented
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}
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return times.Get(fi.FileInfo).BirthTime(), nil
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}
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// birthTimingFile extends a webdav.File to return FileInfos that implement the
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// BirthTimer interface.
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type birthTimingFile struct {
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webdav.File
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}
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func (f *birthTimingFile) Stat() (fs.FileInfo, error) {
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fi, err := f.File.Stat()
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if err != nil {
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return nil, err
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}
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return &birthTimingFileInfo{fi}, nil
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}
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func (f *birthTimingFile) Readdir(count int) ([]fs.FileInfo, error) {
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fis, err := f.File.Readdir(count)
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if err != nil {
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return nil, err
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}
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for i, fi := range fis {
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fis[i] = &birthTimingFileInfo{fi}
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}
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return fis, nil
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}
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