1 files changed, 67 insertions, 0 deletions
diff --git a/weed/mount/weedfs_dir_lookup.go b/weed/mount/weedfs_dir_lookup.go
new file mode 100644
index 000000000..d7e6d8a30
--- /dev/null
+++ b/weed/mount/weedfs_dir_lookup.go
@@ -0,0 +1,67 @@
+package mount
+
+import (
+	"context"
+	"github.com/chrislusf/seaweedfs/weed/filer"
+	"github.com/chrislusf/seaweedfs/weed/glog"
+	"github.com/chrislusf/seaweedfs/weed/mount/meta_cache"
+	"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) {
+
+	if s := checkName(name); s != fuse.OK {
+		return s
+	}
+
+	dirPath, code := wfs.inodeToPath.GetPath(header.NodeId)
+	if code != fuse.OK {
+		return
+	}
+
+	fullFilePath := dirPath.Child(name)
+
+	visitErr := meta_cache.EnsureVisited(wfs.metaCache, wfs, dirPath, nil)
+	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.Lookup(fullFilePath, localEntry.Mode, false, localEntry.Inode, true)
+
+	if fh, found := wfs.fhmap.FindFileHandle(inode); found {
+		glog.V(4).Infof("lookup opened file %s size %d", dirPath.Child(localEntry.Name()), filer.FileSize(fh.entry))
+		localEntry = filer.FromPbEntry(string(dirPath), fh.entry)
+	}
+
+	wfs.outputFilerEntry(out, inode, localEntry)
+
+	return fuse.OK
+
+}