package mount import ( "context" "github.com/chrislusf/seaweedfs/weed/filer" "github.com/chrislusf/seaweedfs/weed/filesys/meta_cache" "github.com/chrislusf/seaweedfs/weed/glog" "github.com/chrislusf/seaweedfs/weed/pb/filer_pb" "github.com/hanwen/go-fuse/v2/fuse" ) // Lookup is called by the kernel when the VFS wants to know // about a file inside a directory. Many lookup calls can // occur in parallel, but only one call happens for each (dir, // name) pair. func (wfs *WFS) Lookup(cancel <-chan struct{}, header *fuse.InHeader, name string, out *fuse.EntryOut) (code fuse.Status) { dirPath := wfs.inodeToPath.GetPath(header.NodeId) fullFilePath := dirPath.Child(name) visitErr := meta_cache.EnsureVisited(wfs.metaCache, wfs, dirPath) if visitErr != nil { glog.Errorf("dir Lookup %s: %v", dirPath, visitErr) return fuse.EIO } localEntry, cacheErr := wfs.metaCache.FindEntry(context.Background(), fullFilePath) if cacheErr == filer_pb.ErrNotFound { return fuse.ENOENT } if localEntry == nil { // glog.V(3).Infof("dir Lookup cache miss %s", fullFilePath) entry, err := filer_pb.GetEntry(wfs, fullFilePath) if err != nil { glog.V(1).Infof("dir GetEntry %s: %v", fullFilePath, err) return fuse.ENOENT } localEntry = filer.FromPbEntry(string(dirPath), entry) } else { glog.V(4).Infof("dir Lookup cache hit %s", fullFilePath) } if localEntry == nil { return fuse.ENOENT } inode := wfs.inodeToPath.GetInode(fullFilePath) wfs.outputEntry(out, inode, localEntry) return fuse.OK }