package filesys import ( "context" "github.com/seaweedfs/fuse" "github.com/chrislusf/seaweedfs/weed/filesys/meta_cache" "github.com/chrislusf/seaweedfs/weed/pb/filer_pb" "github.com/chrislusf/seaweedfs/weed/util" ) func getxattr(entry *filer_pb.Entry, req *fuse.GetxattrRequest, resp *fuse.GetxattrResponse) error { if entry == nil { return fuse.ErrNoXattr } if entry.Extended == nil { return fuse.ErrNoXattr } data, found := entry.Extended[req.Name] if !found { return fuse.ErrNoXattr } if req.Position < uint32(len(data)) { size := req.Size if req.Position+size >= uint32(len(data)) { size = uint32(len(data)) - req.Position } if size == 0 { resp.Xattr = data[req.Position:] } else { resp.Xattr = data[req.Position : req.Position+size] } } return nil } func setxattr(entry *filer_pb.Entry, req *fuse.SetxattrRequest) error { if entry == nil { return fuse.EIO } if entry.Extended == nil { entry.Extended = make(map[string][]byte) } data, _ := entry.Extended[req.Name] newData := make([]byte, int(req.Position)+len(req.Xattr)) copy(newData, data) copy(newData[int(req.Position):], req.Xattr) entry.Extended[req.Name] = newData return nil } func removexattr(entry *filer_pb.Entry, req *fuse.RemovexattrRequest) error { if entry == nil { return fuse.ErrNoXattr } if entry.Extended == nil { return fuse.ErrNoXattr } _, found := entry.Extended[req.Name] if !found { return fuse.ErrNoXattr } delete(entry.Extended, req.Name) return nil } func listxattr(entry *filer_pb.Entry, req *fuse.ListxattrRequest, resp *fuse.ListxattrResponse) error { if entry == nil { return fuse.EIO } for k := range entry.Extended { resp.Append(k) } size := req.Size if req.Position+size >= uint32(len(resp.Xattr)) { size = uint32(len(resp.Xattr)) - req.Position } if size == 0 { resp.Xattr = resp.Xattr[req.Position:] } else { resp.Xattr = resp.Xattr[req.Position : req.Position+size] } return nil } func (wfs *WFS) maybeLoadEntry(dir, name string) (entry *filer_pb.Entry, err error) { fullpath := util.NewFullPath(dir, name) // glog.V(3).Infof("read entry cache miss %s", fullpath) // return a valid entry for the mount root if string(fullpath) == wfs.option.FilerMountRootPath { return &filer_pb.Entry{ Name: wfs.option.FilerMountRootPath, IsDirectory: true, Attributes: &filer_pb.FuseAttributes{ Mtime: wfs.option.MountMtime.Unix(), FileMode: uint32(wfs.option.MountMode), Uid: wfs.option.MountUid, Gid: wfs.option.MountGid, Crtime: wfs.option.MountCtime.Unix(), }, }, nil } // read from async meta cache meta_cache.EnsureVisited(wfs.metaCache, wfs, util.FullPath(dir)) cachedEntry, cacheErr := wfs.metaCache.FindEntry(context.Background(), fullpath) if cacheErr == filer_pb.ErrNotFound { return nil, fuse.ENOENT } return cachedEntry.ToProtoEntry(), cacheErr }