supports mknod, unlink

weed/mount/weedfs_file_mkrm.go

@@ -0,0 +1,108 @@
+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"
+	"time"
+)
+
+func (wfs *WFS) Mknod(cancel <-chan struct{}, in *fuse.MknodIn, name string, out *fuse.EntryOut) (code fuse.Status) {
+
+	if s := checkName(name); s != fuse.OK {
+		return s
+	}
+
+	newEntry := &filer_pb.Entry{
+		Name:        name,
+		IsDirectory: false,
+		Attributes: &filer_pb.FuseAttributes{
+			Mtime:       time.Now().Unix(),
+			Crtime:      time.Now().Unix(),
+			FileMode:    uint32(toFileMode(in.Mode) &^ wfs.option.Umask),
+			Uid:         in.Uid,
+			Gid:         in.Gid,
+			Collection:  wfs.option.Collection,
+			Replication: wfs.option.Replication,
+			TtlSec:      wfs.option.TtlSec,
+		},
+	}
+
+	dirFullPath := wfs.inodeToPath.GetPath(in.NodeId)
+
+	entryFullPath := dirFullPath.Child(name)
+
+	err := wfs.WithFilerClient(false, func(client filer_pb.SeaweedFilerClient) error {
+
+		wfs.mapPbIdFromLocalToFiler(newEntry)
+		defer wfs.mapPbIdFromFilerToLocal(newEntry)
+
+		request := &filer_pb.CreateEntryRequest{
+			Directory:  string(dirFullPath),
+			Entry:      newEntry,
+			Signatures: []int32{wfs.signature},
+		}
+
+		glog.V(1).Infof("mknod: %v", request)
+		if err := filer_pb.CreateEntry(client, request); err != nil {
+			glog.V(0).Infof("mknod %s: %v", entryFullPath, err)
+			return err
+		}
+
+		if err := wfs.metaCache.InsertEntry(context.Background(), filer.FromPbEntry(request.Directory, request.Entry)); err != nil {
+			return fmt.Errorf("local mknod %s: %v", entryFullPath, err)
+		}
+
+		return nil
+	})
+
+	glog.V(0).Infof("mknod %s: %v", entryFullPath, err)
+
+	if err != nil {
+		return fuse.EIO
+	}
+
+	inode := wfs.inodeToPath.GetInode(entryFullPath)
+
+	wfs.outputPbEntry(out, inode, newEntry)
+
+	return fuse.OK
+
+}
+
+func (wfs *WFS) Unlink(cancel <-chan struct{}, header *fuse.InHeader, name string) (code fuse.Status) {
+
+	dirFullPath := wfs.inodeToPath.GetPath(header.NodeId)
+	entryFullPath := dirFullPath.Child(name)
+
+	entry, status := wfs.maybeLoadEntry(entryFullPath)
+	if status != fuse.OK {
+		return status
+	}
+
+	// first, ensure the filer store can correctly delete
+	glog.V(3).Infof("remove file: %v", entryFullPath)
+	isDeleteData := entry != nil && entry.HardLinkCounter <= 1
+	err := filer_pb.Remove(wfs, string(dirFullPath), name, isDeleteData, false, false, false, []int32{wfs.signature})
+	if err != nil {
+		glog.V(0).Infof("remove %s: %v", entryFullPath, err)
+		return fuse.ENOENT
+	}
+
+	// then, delete meta cache
+	if err = wfs.metaCache.DeleteEntry(context.Background(), entryFullPath); err != nil {
+		glog.V(3).Infof("local DeleteEntry %s: %v", entryFullPath, err)
+		return fuse.EIO
+	}
+
+	wfs.metaCache.DeleteEntry(context.Background(), entryFullPath)
+	wfs.inodeToPath.RemovePath(entryFullPath)
+
+	// TODO handle open files, hardlink
+
+	return fuse.OK
+
+}