bd5199910b
This flag allows users to disable the reflink cloning feature and instead force "deep" copies, for certain use cases where data redundancy is preferable. It is functionally equivalent to using `--disable Copy` on local.
82 lines
2.1 KiB
Go
82 lines
2.1 KiB
Go
//go:build darwin && cgo
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// Package local provides a filesystem interface
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package local
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import (
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"context"
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"fmt"
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"runtime"
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"github.com/go-darwin/apfs"
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"github.com/rclone/rclone/fs"
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)
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// Copy src to this remote using server-side copy operations.
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//
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// # This is stored with the remote path given
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//
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// # It returns the destination Object and a possible error
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//
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// Will only be called if src.Fs().Name() == f.Name()
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//
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// If it isn't possible then return fs.ErrorCantCopy
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func (f *Fs) Copy(ctx context.Context, src fs.Object, remote string) (fs.Object, error) {
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if runtime.GOOS != "darwin" || f.opt.TranslateSymlinks || f.opt.NoClone {
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return nil, fs.ErrorCantCopy
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}
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srcObj, ok := src.(*Object)
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if !ok {
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fs.Debugf(src, "Can't clone - not same remote type")
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return nil, fs.ErrorCantCopy
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}
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// Fetch metadata if --metadata is in use
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meta, err := fs.GetMetadataOptions(ctx, f, src, fs.MetadataAsOpenOptions(ctx))
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if err != nil {
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return nil, fmt.Errorf("copy: failed to read metadata: %w", err)
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}
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// Create destination
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dstObj := f.newObject(remote)
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err = dstObj.mkdirAll()
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if err != nil {
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return nil, err
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}
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err = Clone(srcObj.path, f.localPath(remote))
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if err != nil {
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return nil, err
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}
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fs.Debugf(remote, "server-side cloned!")
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// Set metadata if --metadata is in use
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if meta != nil {
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err = dstObj.writeMetadata(meta)
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if err != nil {
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return nil, fmt.Errorf("copy: failed to set metadata: %w", err)
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}
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}
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return f.NewObject(ctx, remote)
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}
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// Clone uses APFS cloning if possible, otherwise falls back to copying (with full metadata preservation)
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// note that this is closely related to unix.Clonefile(src, dst, unix.CLONE_NOFOLLOW) but not 100% identical
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// https://opensource.apple.com/source/copyfile/copyfile-173.40.2/copyfile.c.auto.html
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func Clone(src, dst string) error {
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state := apfs.CopyFileStateAlloc()
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defer func() {
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if err := apfs.CopyFileStateFree(state); err != nil {
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fs.Errorf(dst, "free state error: %v", err)
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}
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}()
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cloned, err := apfs.CopyFile(src, dst, state, apfs.COPYFILE_CLONE)
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fs.Debugf(dst, "isCloned: %v, error: %v", cloned, err)
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return err
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}
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// Check the interfaces are satisfied
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var (
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_ fs.Copier = &Fs{}
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)
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