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package filesys
import ( "context" "os" "syscall" "time"
"github.com/chrislusf/seaweedfs/weed/filer" "github.com/chrislusf/seaweedfs/weed/glog" "github.com/chrislusf/seaweedfs/weed/pb/filer_pb" "github.com/seaweedfs/fuse" "github.com/seaweedfs/fuse/fs" )
var _ = fs.NodeSymlinker(&Dir{}) var _ = fs.NodeReadlinker(&File{})
func (dir *Dir) Symlink(ctx context.Context, req *fuse.SymlinkRequest) (fs.Node, error) {
glog.V(4).Infof("Symlink: %v/%v to %v", dir.FullPath(), req.NewName, req.Target)
request := &filer_pb.CreateEntryRequest{ Directory: dir.FullPath(), Entry: &filer_pb.Entry{ Name: req.NewName, IsDirectory: false, Attributes: &filer_pb.FuseAttributes{ Mtime: time.Now().Unix(), Crtime: time.Now().Unix(), FileMode: uint32((os.FileMode(0777) | os.ModeSymlink) &^ dir.wfs.option.Umask), Uid: req.Uid, Gid: req.Gid, SymlinkTarget: req.Target, }, }, Signatures: []int32{dir.wfs.signature}, }
err := dir.wfs.WithFilerClient(func(client filer_pb.SeaweedFilerClient) error { if err := filer_pb.CreateEntry(client, request); err != nil { glog.V(0).Infof("symlink %s/%s: %v", dir.FullPath(), req.NewName, err) return fuse.EIO }
dir.wfs.metaCache.InsertEntry(context.Background(), filer.FromPbEntry(request.Directory, request.Entry))
return nil })
symlink := dir.newFile(req.NewName, request.Entry)
return symlink, err
}
func (file *File) Readlink(ctx context.Context, req *fuse.ReadlinkRequest) (string, error) {
if err := file.maybeLoadEntry(ctx); err != nil { return "", err }
if os.FileMode(file.entry.Attributes.FileMode)&os.ModeSymlink == 0 { return "", fuse.Errno(syscall.EINVAL) }
glog.V(4).Infof("Readlink: %v/%v => %v", file.dir.FullPath(), file.Name, file.entry.Attributes.SymlinkTarget)
return file.entry.Attributes.SymlinkTarget, nil
}
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