rename

weed/mount/weedfs_dir_read.go

@@ -0,0 +1,71 @@
+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/hanwen/go-fuse/v2/fuse"
+	"math"
+)
+
+// Directory handling
+
+func (wfs *WFS) OpenDir(cancel <-chan struct{}, input *fuse.OpenIn, out *fuse.OpenOut) (code fuse.Status) {
+	return fuse.OK
+}
+func (wfs *WFS) ReleaseDir(input *fuse.ReleaseIn) {
+}
+func (wfs *WFS) FsyncDir(cancel <-chan struct{}, input *fuse.FsyncIn) (code fuse.Status) {
+	return fuse.OK
+}
+
+func (wfs *WFS) ReadDir(cancel <-chan struct{}, input *fuse.ReadIn, out *fuse.DirEntryList) (code fuse.Status) {
+	return wfs.doReadDirectory(input, out, false)
+}
+
+func (wfs *WFS) ReadDirPlus(cancel <-chan struct{}, input *fuse.ReadIn, out *fuse.DirEntryList) (code fuse.Status) {
+	return wfs.doReadDirectory(input, out, true)
+}
+
+func (wfs *WFS) doReadDirectory(input *fuse.ReadIn, out *fuse.DirEntryList, isPlusMode bool) fuse.Status {
+	dirPath := wfs.inodeToPath.GetPath(input.NodeId)
+
+	var dirEntry fuse.DirEntry
+	processEachEntryFn := func(entry *filer.Entry, isLast bool) bool {
+		dirEntry.Name = entry.Name()
+		inode := wfs.inodeToPath.GetInode(dirPath.Child(dirEntry.Name))
+		dirEntry.Ino = inode
+		dirEntry.Mode = toSystemMode(entry.Mode)
+		if !isPlusMode {
+			if !out.AddDirEntry(dirEntry) {
+				return false
+			}
+
+		} else {
+			entryOut := out.AddDirLookupEntry(dirEntry)
+			if entryOut == nil {
+				return false
+			}
+			entryOut.Generation = 1
+			entryOut.EntryValid = 1
+			entryOut.AttrValid = 1
+			wfs.setAttrByFilerEntry(&entryOut.Attr, inode, entry)
+		}
+		return true
+	}
+
+	// TODO remove this with checking whether directory is not forgotten
+	if err := meta_cache.EnsureVisited(wfs.metaCache, wfs, dirPath); err != nil {
+		glog.Errorf("dir ReadDirAll %s: %v", dirPath, err)
+		return fuse.EIO
+	}
+	listErr := wfs.metaCache.ListDirectoryEntries(context.Background(), dirPath, "", false, int64(math.MaxInt32), func(entry *filer.Entry) bool {
+		return processEachEntryFn(entry, false)
+	})
+	if listErr != nil {
+		glog.Errorf("list meta cache: %v", listErr)
+		return fuse.EIO
+	}
+	return fuse.OK
+}