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package mount
import ( "context" "fmt" "github.com/chrislusf/seaweedfs/weed/filer" "github.com/chrislusf/seaweedfs/weed/glog" "github.com/chrislusf/seaweedfs/weed/pb/filer_pb" "github.com/hanwen/go-fuse/v2/fuse" "os" "time" )
/** Create a symbolic link */ func (wfs *WFS) Symlink(cancel <-chan struct{}, header *fuse.InHeader, target string, 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 } entryFullPath := dirPath.Child(name)
request := &filer_pb.CreateEntryRequest{ Directory: string(dirPath), Entry: &filer_pb.Entry{ Name: name, IsDirectory: false, Attributes: &filer_pb.FuseAttributes{ Mtime: time.Now().Unix(), Crtime: time.Now().Unix(), FileMode: uint32(os.FileMode(0777) | os.ModeSymlink), Uid: header.Uid, Gid: header.Gid, SymlinkTarget: target, }, }, Signatures: []int32{wfs.signature}, }
err := wfs.WithFilerClient(false, func(client filer_pb.SeaweedFilerClient) error {
wfs.mapPbIdFromLocalToFiler(request.Entry) defer wfs.mapPbIdFromFilerToLocal(request.Entry)
if err := filer_pb.CreateEntry(client, request); err != nil { return fmt.Errorf("symlink %s: %v", entryFullPath, err) }
wfs.metaCache.InsertEntry(context.Background(), filer.FromPbEntry(request.Directory, request.Entry))
return nil }) if err != nil { glog.V(0).Infof("Symlink %s => %s: %v", entryFullPath, target, err) return fuse.EIO }
inode := wfs.inodeToPath.Lookup(entryFullPath, os.ModeSymlink, false, 0, true)
wfs.outputPbEntry(out, inode, request.Entry)
return fuse.OK }
func (wfs *WFS) Readlink(cancel <-chan struct{}, header *fuse.InHeader) (out []byte, code fuse.Status) { entryFullPath, code := wfs.inodeToPath.GetPath(header.NodeId) if code != fuse.OK { return }
entry, status := wfs.maybeLoadEntry(entryFullPath) if status != fuse.OK { return nil, status } if os.FileMode(entry.Attributes.FileMode)&os.ModeSymlink == 0 { return nil, fuse.EINVAL }
return []byte(entry.Attributes.SymlinkTarget), fuse.OK }
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