Esempio n. 1
0
func (sc *serveConn) readDir(req *fuse.ReadRequest) {
	inode := uint64(req.Header.Node)
	resp := &fuse.ReadResponse{make([]byte, 0, req.Size)}
	var dirs []fuse.Dirent
	file, err := sc.db.FileByInode(inode)
	if err != nil {
		fuse.Debug(fmt.Sprintf("FileByInode(%d): %v", inode, err))
		req.RespondError(fuse.EIO)
		return
	}

	for _, inode := range file.Children {
		f, err := sc.db.FileByInode(inode)
		if err != nil {
			fuse.Debug(fmt.Sprintf("child: FileByInode(%d): %v", inode, err))
			req.RespondError(fuse.EIO)
			return
		}
		childType := fuse.DT_File
		if f.MimeType == driveFolderMimeType {
			childType = fuse.DT_Dir
		}
		dirs = append(dirs, fuse.Dirent{Inode: f.Inode, Name: f.Title, Type: childType})
	}
	fuse.Debug(fmt.Sprintf("%+v", dirs))
	var data []byte
	for _, dir := range dirs {
		data = fuse.AppendDirent(data, dir)
	}
	fuseutil.HandleRead(req, resp, data)
	req.Respond(resp)
}
Esempio n. 2
0
func (f *fs) handleRead(r *fuse.ReadRequest) {
	log.Println("Inside handleRead")
	log.Println(r)
	resp := &fuse.ReadResponse{Data: make([]byte, r.Size)}
	if r.Dir {
		// handle directory listing
		data := f.handles.getReadCache(r.Handle)
		if data == nil {
			d, err := f.rpc.api.ReadDirAll(f.getContext(), &pb.ReadDirAllRequest{Inode: uint64(r.Node)})
			log.Println(d)
			if err != nil {
				log.Fatalf("Read on dir failed: %v", err)
			}
			data = fuse.AppendDirent(data, fuse.Dirent{
				Name:  ".",
				Inode: uint64(r.Node),
				Type:  fuse.DT_Dir,
			})
			data = fuse.AppendDirent(data, fuse.Dirent{
				Name: "..",
				Type: fuse.DT_Dir,
			})
			for _, de := range d.DirEntries {
				log.Println(de)
				data = fuse.AppendDirent(data, fuse.Dirent{
					Name:  de.Name,
					Inode: de.Attr.Inode,
					Type:  fuse.DT_Dir,
				})
			}
			for _, fe := range d.FileEntries {
				log.Println(fe)
				data = fuse.AppendDirent(data, fuse.Dirent{
					Name:  fe.Name,
					Inode: fe.Attr.Inode,
					Type:  fuse.DT_File,
				})
			}
			f.handles.cacheRead(r.Handle, data)
		}
		fuseutil.HandleRead(r, resp, data)
		r.Respond(resp)
		return
	} else {
		// handle file read
		data, err := f.rpc.api.Read(f.getContext(), &pb.ReadRequest{
			Inode:  uint64(r.Node),
			Offset: int64(r.Offset),
			Size:   int64(r.Size),
		})
		if err != nil {
			log.Fatal("Read on file failed: ", err)
		}
		copy(resp.Data, data.Payload)
		r.Respond(resp)
	}
}
Esempio n. 3
0
func (it *interrupt) Read(req *fuse.ReadRequest, resp *fuse.ReadResponse, intr Intr) fuse.Error {
	if it.hanging == nil {
		fuseutil.HandleRead(req, resp, []byte("don't read this outside of the test"))
		return nil
	}

	close(it.hanging)
	<-intr
	return fuse.EINTR
}
Esempio n. 4
0
// HandleReader
func (f *File) Read(req *fuse.ReadRequest, resp *fuse.ReadResponse, intr fs.Intr) fuse.Error {
	f.mu.Lock()
	defer f.mu.Unlock()

	if f.writers == 0 {
		f.load()
	}

	fuseutil.HandleRead(req, resp, f.data)

	return nil
}
Esempio n. 5
0
// Read implements the HandleReader interface. It is called to handle every read request.
// Because the file is opened in DirectIO mode, the kernel will not cache any file data.
func (file *consulFile) Read(
	ctx context.Context,
	req *fuse.ReadRequest,
	resp *fuse.ReadResponse,
) error {
	data, err := file.readAll(ctx)
	if err != nil {
		return err
	}
	fuseutil.HandleRead(req, resp, data)
	return nil
}
Esempio n. 6
0
func (f *File) Read(c context.Context, req *fuse.ReadRequest, resp *fuse.ReadResponse) error {
	f.mu.Lock()
	defer f.mu.Unlock()

	fn := func(b []byte) {
		fuseutil.HandleRead(req, resp, b)
	}
	if f.writers == 0 {
		f.load(c, fn)
	} else {
		fn(f.data)
	}
	return nil
}
Esempio n. 7
0
func (c *serveConn) serve(r fuse.Request) {
	intr := make(Intr)
	req := &serveRequest{Request: r, Intr: intr}

	c.debug(request{
		Op:      opName(r),
		Request: r.Hdr(),
		In:      r,
	})
	var node Node
	var snode *serveNode
	c.meta.Lock()
	hdr := r.Hdr()
	if id := hdr.Node; id != 0 {
		if id < fuse.NodeID(len(c.node)) {
			snode = c.node[uint(id)]
		}
		if snode == nil {
			c.meta.Unlock()
			c.debug(response{
				Op:      opName(r),
				Request: logResponseHeader{ID: hdr.ID},
				Error:   fuse.ESTALE.ErrnoName(),
				// this is the only place that sets both Error and
				// Out; not sure if i want to do that; might get rid
				// of len(c.node) things altogether
				Out: logMissingNode{
					MaxNode: fuse.NodeID(len(c.node)),
				},
			})
			r.RespondError(fuse.ESTALE)
			return
		}
		node = snode.node
	}
	if c.req[hdr.ID] != nil {
		// This happens with OSXFUSE.  Assume it's okay and
		// that we'll never see an interrupt for this one.
		// Otherwise everything wedges.  TODO: Report to OSXFUSE?
		//
		// TODO this might have been because of missing done() calls
		intr = nil
	} else {
		c.req[hdr.ID] = req
	}
	c.meta.Unlock()

	// Call this before responding.
	// After responding is too late: we might get another request
	// with the same ID and be very confused.
	done := func(resp interface{}) {
		msg := response{
			Op:      opName(r),
			Request: logResponseHeader{ID: hdr.ID},
		}
		if err, ok := resp.(error); ok {
			msg.Error = err.Error()
			if ferr, ok := err.(fuse.ErrorNumber); ok {
				errno := ferr.Errno()
				msg.Errno = errno.ErrnoName()
				if errno == err {
					// it's just a fuse.Errno with no extra detail;
					// skip the textual message for log readability
					msg.Error = ""
				}
			} else {
				msg.Errno = fuse.DefaultErrno.ErrnoName()
			}
		} else {
			msg.Out = resp
		}
		c.debug(msg)

		c.meta.Lock()
		delete(c.req, hdr.ID)
		c.meta.Unlock()
	}

	switch r := r.(type) {
	default:
		// Note: To FUSE, ENOSYS means "this server never implements this request."
		// It would be inappropriate to return ENOSYS for other operations in this
		// switch that might only be unavailable in some contexts, not all.
		done(fuse.ENOSYS)
		r.RespondError(fuse.ENOSYS)

	// FS operations.
	case *fuse.InitRequest:
		s := &fuse.InitResponse{
			MaxWrite: 128 * 1024,
			Flags:    fuse.InitBigWrites,
		}
		if fs, ok := c.fs.(FSIniter); ok {
			if err := fs.Init(r, s, intr); err != nil {
				done(err)
				r.RespondError(err)
				break
			}
		}
		done(s)
		r.Respond(s)

	case *fuse.StatfsRequest:
		s := &fuse.StatfsResponse{}
		if fs, ok := c.fs.(FSStatfser); ok {
			if err := fs.Statfs(r, s, intr); err != nil {
				done(err)
				r.RespondError(err)
				break
			}
		}
		done(s)
		r.Respond(s)

	// Node operations.
	case *fuse.GetattrRequest:
		s := &fuse.GetattrResponse{}
		if n, ok := node.(NodeGetattrer); ok {
			if err := n.Getattr(r, s, intr); err != nil {
				done(err)
				r.RespondError(err)
				break
			}
		} else {
			s.AttrValid = attrValidTime
			s.Attr = snode.attr()
		}
		done(s)
		r.Respond(s)

	case *fuse.SetattrRequest:
		s := &fuse.SetattrResponse{}
		if n, ok := node.(NodeSetattrer); ok {
			if err := n.Setattr(r, s, intr); err != nil {
				done(err)
				r.RespondError(err)
				break
			}
			done(s)
			r.Respond(s)
			break
		}

		if s.AttrValid == 0 {
			s.AttrValid = attrValidTime
		}
		s.Attr = snode.attr()
		done(s)
		r.Respond(s)

	case *fuse.SymlinkRequest:
		s := &fuse.SymlinkResponse{}
		n, ok := node.(NodeSymlinker)
		if !ok {
			done(fuse.EIO) // XXX or EPERM like Mkdir?
			r.RespondError(fuse.EIO)
			break
		}
		n2, err := n.Symlink(r, intr)
		if err != nil {
			done(err)
			r.RespondError(err)
			break
		}
		c.saveLookup(&s.LookupResponse, snode, r.NewName, n2)
		done(s)
		r.Respond(s)

	case *fuse.ReadlinkRequest:
		n, ok := node.(NodeReadlinker)
		if !ok {
			done(fuse.EIO) /// XXX or EPERM?
			r.RespondError(fuse.EIO)
			break
		}
		target, err := n.Readlink(r, intr)
		if err != nil {
			done(err)
			r.RespondError(err)
			break
		}
		done(target)
		r.Respond(target)

	case *fuse.LinkRequest:
		n, ok := node.(NodeLinker)
		if !ok {
			done(fuse.EIO) /// XXX or EPERM?
			r.RespondError(fuse.EIO)
			break
		}
		c.meta.Lock()
		var oldNode *serveNode
		if int(r.OldNode) < len(c.node) {
			oldNode = c.node[r.OldNode]
		}
		c.meta.Unlock()
		if oldNode == nil {
			c.debug(logLinkRequestOldNodeNotFound{
				Request: r.Hdr(),
				In:      r,
			})
			done(fuse.EIO)
			r.RespondError(fuse.EIO)
			break
		}
		n2, err := n.Link(r, oldNode.node, intr)
		if err != nil {
			done(err)
			r.RespondError(err)
			break
		}
		s := &fuse.LookupResponse{}
		c.saveLookup(s, snode, r.NewName, n2)
		done(s)
		r.Respond(s)

	case *fuse.RemoveRequest:
		n, ok := node.(NodeRemover)
		if !ok {
			done(fuse.EIO) /// XXX or EPERM?
			r.RespondError(fuse.EIO)
			break
		}
		err := n.Remove(r, intr)
		if err != nil {
			done(err)
			r.RespondError(err)
			break
		}
		done(nil)
		r.Respond()

	case *fuse.AccessRequest:
		if n, ok := node.(NodeAccesser); ok {
			if err := n.Access(r, intr); err != nil {
				done(err)
				r.RespondError(err)
				break
			}
		}
		done(nil)
		r.Respond()

	case *fuse.LookupRequest:
		var n2 Node
		var err fuse.Error
		s := &fuse.LookupResponse{}
		if n, ok := node.(NodeStringLookuper); ok {
			n2, err = n.Lookup(r.Name, intr)
		} else if n, ok := node.(NodeRequestLookuper); ok {
			n2, err = n.Lookup(r, s, intr)
		} else {
			done(fuse.ENOENT)
			r.RespondError(fuse.ENOENT)
			break
		}
		if err != nil {
			done(err)
			r.RespondError(err)
			break
		}
		c.saveLookup(s, snode, r.Name, n2)
		done(s)
		r.Respond(s)

	case *fuse.MkdirRequest:
		s := &fuse.MkdirResponse{}
		n, ok := node.(NodeMkdirer)
		if !ok {
			done(fuse.EPERM)
			r.RespondError(fuse.EPERM)
			break
		}
		n2, err := n.Mkdir(r, intr)
		if err != nil {
			done(err)
			r.RespondError(err)
			break
		}
		c.saveLookup(&s.LookupResponse, snode, r.Name, n2)
		done(s)
		r.Respond(s)

	case *fuse.OpenRequest:
		s := &fuse.OpenResponse{}
		var h2 Handle
		if n, ok := node.(NodeOpener); ok {
			hh, err := n.Open(r, s, intr)
			if err != nil {
				done(err)
				r.RespondError(err)
				break
			}
			h2 = hh
		} else {
			h2 = node
		}
		s.Handle = c.saveHandle(h2, hdr.Node)
		done(s)
		r.Respond(s)

	case *fuse.CreateRequest:
		n, ok := node.(NodeCreater)
		if !ok {
			// If we send back ENOSYS, FUSE will try mknod+open.
			done(fuse.EPERM)
			r.RespondError(fuse.EPERM)
			break
		}
		s := &fuse.CreateResponse{OpenResponse: fuse.OpenResponse{}}
		n2, h2, err := n.Create(r, s, intr)
		if err != nil {
			done(err)
			r.RespondError(err)
			break
		}
		c.saveLookup(&s.LookupResponse, snode, r.Name, n2)
		s.Handle = c.saveHandle(h2, hdr.Node)
		done(s)
		r.Respond(s)

	case *fuse.GetxattrRequest:
		n, ok := node.(NodeGetxattrer)
		if !ok {
			done(fuse.ENOTSUP)
			r.RespondError(fuse.ENOTSUP)
			break
		}
		s := &fuse.GetxattrResponse{}
		err := n.Getxattr(r, s, intr)
		if err != nil {
			done(err)
			r.RespondError(err)
			break
		}
		if r.Size != 0 && uint64(len(s.Xattr)) > uint64(r.Size) {
			done(fuse.ERANGE)
			r.RespondError(fuse.ERANGE)
			break
		}
		done(s)
		r.Respond(s)

	case *fuse.ListxattrRequest:
		n, ok := node.(NodeListxattrer)
		if !ok {
			done(fuse.ENOTSUP)
			r.RespondError(fuse.ENOTSUP)
			break
		}
		s := &fuse.ListxattrResponse{}
		err := n.Listxattr(r, s, intr)
		if err != nil {
			done(err)
			r.RespondError(err)
			break
		}
		if r.Size != 0 && uint64(len(s.Xattr)) > uint64(r.Size) {
			done(fuse.ERANGE)
			r.RespondError(fuse.ERANGE)
			break
		}
		done(s)
		r.Respond(s)

	case *fuse.SetxattrRequest:
		n, ok := node.(NodeSetxattrer)
		if !ok {
			done(fuse.ENOTSUP)
			r.RespondError(fuse.ENOTSUP)
			break
		}
		err := n.Setxattr(r, intr)
		if err != nil {
			done(err)
			r.RespondError(err)
			break
		}
		done(nil)
		r.Respond()

	case *fuse.RemovexattrRequest:
		n, ok := node.(NodeRemovexattrer)
		if !ok {
			done(fuse.ENOTSUP)
			r.RespondError(fuse.ENOTSUP)
			break
		}
		err := n.Removexattr(r, intr)
		if err != nil {
			done(err)
			r.RespondError(err)
			break
		}
		done(nil)
		r.Respond()

	case *fuse.ForgetRequest:
		forget := c.dropNode(hdr.Node, r.N)
		if forget {
			n, ok := node.(NodeForgetter)
			if ok {
				n.Forget()
			}
		}
		done(nil)
		r.Respond()

	// Handle operations.
	case *fuse.ReadRequest:
		shandle := c.getHandle(r.Handle)
		if shandle == nil {
			done(fuse.ESTALE)
			r.RespondError(fuse.ESTALE)
			return
		}
		handle := shandle.handle

		s := &fuse.ReadResponse{Data: make([]byte, 0, r.Size)}
		if r.Dir {
			if h, ok := handle.(HandleReadDirer); ok {
				if shandle.readData == nil {
					dirs, err := h.ReadDir(intr)
					if err != nil {
						done(err)
						r.RespondError(err)
						break
					}
					var data []byte
					for _, dir := range dirs {
						if dir.Inode == 0 {
							dir.Inode = c.dynamicInode(snode.inode, dir.Name)
						}
						data = fuse.AppendDirent(data, dir)
					}
					shandle.readData = data
				}
				fuseutil.HandleRead(r, s, shandle.readData)
				done(s)
				r.Respond(s)
				break
			}
		} else {
			if h, ok := handle.(HandleReadAller); ok {
				if shandle.readData == nil {
					data, err := h.ReadAll(intr)
					if err != nil {
						done(err)
						r.RespondError(err)
						break
					}
					if data == nil {
						data = []byte{}
					}
					shandle.readData = data
				}
				fuseutil.HandleRead(r, s, shandle.readData)
				done(s)
				r.Respond(s)
				break
			}
			h, ok := handle.(HandleReader)
			if !ok {
				fmt.Printf("NO READ FOR %T\n", handle)
				done(fuse.EIO)
				r.RespondError(fuse.EIO)
				break
			}
			if err := h.Read(r, s, intr); err != nil {
				done(err)
				r.RespondError(err)
				break
			}
		}
		done(s)
		r.Respond(s)

	case *fuse.WriteRequest:
		shandle := c.getHandle(r.Handle)
		if shandle == nil {
			done(fuse.ESTALE)
			r.RespondError(fuse.ESTALE)
			return
		}

		s := &fuse.WriteResponse{}
		if h, ok := shandle.handle.(HandleWriter); ok {
			if err := h.Write(r, s, intr); err != nil {
				done(err)
				r.RespondError(err)
				break
			}
			done(s)
			r.Respond(s)
			break
		}
		done(fuse.EIO)
		r.RespondError(fuse.EIO)

	case *fuse.FlushRequest:
		shandle := c.getHandle(r.Handle)
		if shandle == nil {
			done(fuse.ESTALE)
			r.RespondError(fuse.ESTALE)
			return
		}
		handle := shandle.handle

		if h, ok := handle.(HandleFlusher); ok {
			if err := h.Flush(r, intr); err != nil {
				done(err)
				r.RespondError(err)
				break
			}
		}
		done(nil)
		r.Respond()

	case *fuse.ReleaseRequest:
		shandle := c.getHandle(r.Handle)
		if shandle == nil {
			done(fuse.ESTALE)
			r.RespondError(fuse.ESTALE)
			return
		}
		handle := shandle.handle

		// No matter what, release the handle.
		c.dropHandle(r.Handle)

		if h, ok := handle.(HandleReleaser); ok {
			if err := h.Release(r, intr); err != nil {
				done(err)
				r.RespondError(err)
				break
			}
		}
		done(nil)
		r.Respond()

	case *fuse.DestroyRequest:
		if fs, ok := c.fs.(FSDestroyer); ok {
			fs.Destroy()
		}
		done(nil)
		r.Respond()

	case *fuse.RenameRequest:
		c.meta.Lock()
		var newDirNode *serveNode
		if int(r.NewDir) < len(c.node) {
			newDirNode = c.node[r.NewDir]
		}
		c.meta.Unlock()
		if newDirNode == nil {
			c.debug(renameNewDirNodeNotFound{
				Request: r.Hdr(),
				In:      r,
			})
			done(fuse.EIO)
			r.RespondError(fuse.EIO)
			break
		}
		n, ok := node.(NodeRenamer)
		if !ok {
			done(fuse.EIO) // XXX or EPERM like Mkdir?
			r.RespondError(fuse.EIO)
			break
		}
		err := n.Rename(r, newDirNode.node, intr)
		if err != nil {
			done(err)
			r.RespondError(err)
			break
		}
		done(nil)
		r.Respond()

	case *fuse.MknodRequest:
		n, ok := node.(NodeMknoder)
		if !ok {
			done(fuse.EIO)
			r.RespondError(fuse.EIO)
			break
		}
		n2, err := n.Mknod(r, intr)
		if err != nil {
			done(err)
			r.RespondError(err)
			break
		}
		s := &fuse.LookupResponse{}
		c.saveLookup(s, snode, r.Name, n2)
		done(s)
		r.Respond(s)

	case *fuse.FsyncRequest:
		n, ok := node.(NodeFsyncer)
		if !ok {
			done(fuse.EIO)
			r.RespondError(fuse.EIO)
			break
		}
		err := n.Fsync(r, intr)
		if err != nil {
			done(err)
			r.RespondError(err)
			break
		}
		done(nil)
		r.Respond()

	case *fuse.InterruptRequest:
		c.meta.Lock()
		ireq := c.req[r.IntrID]
		if ireq != nil && ireq.Intr != nil {
			close(ireq.Intr)
			ireq.Intr = nil
		}
		c.meta.Unlock()
		done(nil)
		r.Respond()

		/*	case *FsyncdirRequest:
				done(ENOSYS)
				r.RespondError(ENOSYS)

			case *GetlkRequest, *SetlkRequest, *SetlkwRequest:
				done(ENOSYS)
				r.RespondError(ENOSYS)

			case *BmapRequest:
				done(ENOSYS)
				r.RespondError(ENOSYS)

			case *SetvolnameRequest, *GetxtimesRequest, *ExchangeRequest:
				done(ENOSYS)
				r.RespondError(ENOSYS)
		*/
	}
}
Esempio n. 8
0
File: serve.go Progetto: rsrsps/fuse
func (c *serveConn) serve(fs FS, r fuse.Request) {
	intr := make(Intr)
	req := &serveRequest{Request: r, Intr: intr}

	fuse.Debugf("<- %s", req)
	var node Node
	var snode *serveNode
	c.meta.Lock()
	hdr := r.Hdr()
	if id := hdr.Node; id != 0 {
		if id < fuse.NodeID(len(c.node)) {
			snode = c.node[uint(id)]
		}
		if snode == nil {
			c.meta.Unlock()
			println("missing node", id, len(c.node), snode)
			fuse.Debugf("-> %#x %v", hdr.ID, fuse.ESTALE)
			r.RespondError(fuse.ESTALE)
			return
		}
		node = snode.node
	}
	if c.req[hdr.ID] != nil {
		// This happens with OSXFUSE.  Assume it's okay and
		// that we'll never see an interrupt for this one.
		// Otherwise everything wedges.  TODO: Report to OSXFUSE?
		intr = nil
	} else {
		c.req[hdr.ID] = req
	}
	c.meta.Unlock()

	// Call this before responding.
	// After responding is too late: we might get another request
	// with the same ID and be very confused.
	done := func(resp interface{}) {
		fuse.Debugf("-> %#x %v", hdr.ID, resp)
		c.meta.Lock()
		c.req[hdr.ID] = nil
		c.meta.Unlock()
	}

	switch r := r.(type) {
	default:
		// Note: To FUSE, ENOSYS means "this server never implements this request."
		// It would be inappropriate to return ENOSYS for other operations in this
		// switch that might only be unavailable in some contexts, not all.
		done(fuse.ENOSYS)
		r.RespondError(fuse.ENOSYS)

	// FS operations.
	case *fuse.InitRequest:
		s := &fuse.InitResponse{
			MaxWrite: 4096,
		}
		if fs, ok := fs.(FSIniter); ok {
			if err := fs.Init(r, s, intr); err != nil {
				done(err)
				r.RespondError(err)
				break
			}
		}
		done(s)
		r.Respond(s)

	case *fuse.StatfsRequest:
		s := &fuse.StatfsResponse{}
		if fs, ok := fs.(FSStatfser); ok {
			if err := fs.Statfs(r, s, intr); err != nil {
				done(err)
				r.RespondError(err)
				break
			}
		}
		done(s)
		r.Respond(s)

	// Node operations.
	case *fuse.GetattrRequest:
		s := &fuse.GetattrResponse{}
		if n, ok := node.(NodeGetattrer); ok {
			if err := n.Getattr(r, s, intr); err != nil {
				done(err)
				r.RespondError(err)
				break
			}
		} else {
			s.AttrValid = 1 * time.Minute
			s.Attr = snode.attr()
		}
		done(s)
		r.Respond(s)

	case *fuse.SetattrRequest:
		s := &fuse.SetattrResponse{}

		// Special-case truncation, if no other bits are set
		// and the open Handles all have a WriteAll method.
		//
		// TODO WriteAll mishandles all kinds of cases, e.g.
		// truncating to non-zero size, noncontiguous writes, etc
		if r.Valid.Size() && r.Size == 0 {
			type writeAll interface {
				WriteAll([]byte, Intr) fuse.Error
			}
			switch r.Valid {
			case fuse.SetattrLockOwner | fuse.SetattrSize, fuse.SetattrSize:
				// Seen on Linux. Handle isn't set.
				c.meta.Lock()
				// it is not safe to assume any handles are open for
				// this node; calls to truncate(2) can happen at any
				// time
				if len(c.nodeHandles) > int(hdr.Node) {
					for hid := range c.nodeHandles[hdr.Node] {
						shandle := c.handle[hid]
						if _, ok := shandle.handle.(writeAll); ok {
							shandle.trunc = true
						}
					}
				}
				c.meta.Unlock()
			case fuse.SetattrHandle | fuse.SetattrSize:
				// Seen on OS X; the Handle is provided.
				shandle := c.getHandle(r.Handle)
				if shandle == nil {
					fuse.Debugf("-> %#x %v", hdr.ID, fuse.ESTALE)
					r.RespondError(fuse.ESTALE)
					return
				}
				if _, ok := shandle.handle.(writeAll); ok {
					shandle.trunc = true
				}
			}
		}

		log.Printf("setattr %v", r)
		if n, ok := node.(NodeSetattrer); ok {
			if err := n.Setattr(r, s, intr); err != nil {
				done(err)
				r.RespondError(err)
				break
			}
			done(s)
			r.Respond(s)
			break
		}

		if s.AttrValid == 0 {
			s.AttrValid = 1 * time.Minute
		}
		s.Attr = snode.attr()
		done(s)
		r.Respond(s)

	case *fuse.SymlinkRequest:
		s := &fuse.SymlinkResponse{}
		n, ok := node.(NodeSymlinker)
		if !ok {
			done(fuse.EIO) // XXX or EPERM like Mkdir?
			r.RespondError(fuse.EIO)
			break
		}
		n2, err := n.Symlink(r, intr)
		if err != nil {
			done(err)
			r.RespondError(err)
			break
		}
		c.saveLookup(&s.LookupResponse, snode, r.NewName, n2)
		done(s)
		r.Respond(s)

	case *fuse.ReadlinkRequest:
		n, ok := node.(NodeReadlinker)
		if !ok {
			done(fuse.EIO) /// XXX or EPERM?
			r.RespondError(fuse.EIO)
			break
		}
		target, err := n.Readlink(r, intr)
		if err != nil {
			done(err)
			r.RespondError(err)
			break
		}
		done(target)
		r.Respond(target)

	case *fuse.LinkRequest:
		n, ok := node.(NodeLinker)
		if !ok {
			log.Printf("Node %T doesn't implement fuse Link", node)
			done(fuse.EIO) /// XXX or EPERM?
			r.RespondError(fuse.EIO)
			break
		}
		c.meta.Lock()
		var oldNode *serveNode
		if int(r.OldNode) < len(c.node) {
			oldNode = c.node[r.OldNode]
		}
		c.meta.Unlock()
		if oldNode == nil {
			log.Printf("In LinkRequest, node %d not found", r.OldNode)
			done(fuse.EIO)
			r.RespondError(fuse.EIO)
			break
		}
		n2, err := n.Link(r, oldNode.node, intr)
		if err != nil {
			done(err)
			r.RespondError(err)
			break
		}
		s := &fuse.LookupResponse{}
		c.saveLookup(s, snode, r.NewName, n2)
		done(s)
		r.Respond(s)

	case *fuse.RemoveRequest:
		n, ok := node.(NodeRemover)
		if !ok {
			done(fuse.EIO) /// XXX or EPERM?
			r.RespondError(fuse.EIO)
			break
		}
		err := n.Remove(r, intr)
		if err != nil {
			done(err)
			r.RespondError(err)
			break
		}
		done(nil)
		r.Respond()

	case *fuse.AccessRequest:
		if n, ok := node.(NodeAccesser); ok {
			if err := n.Access(r, intr); err != nil {
				done(err)
				r.RespondError(err)
				break
			}
		}
		done(r)
		r.Respond()

	case *fuse.LookupRequest:
		var n2 Node
		var err fuse.Error
		s := &fuse.LookupResponse{}
		if n, ok := node.(NodeStringLookuper); ok {
			n2, err = n.Lookup(r.Name, intr)
		} else if n, ok := node.(NodeRequestLookuper); ok {
			n2, err = n.Lookup(r, s, intr)
		} else {
			done(fuse.ENOENT)
			r.RespondError(fuse.ENOENT)
			break
		}
		if err != nil {
			done(err)
			r.RespondError(err)
			break
		}
		c.saveLookup(s, snode, r.Name, n2)
		done(s)
		r.Respond(s)

	case *fuse.MkdirRequest:
		s := &fuse.MkdirResponse{}
		n, ok := node.(NodeMkdirer)
		if !ok {
			done(fuse.EPERM)
			r.RespondError(fuse.EPERM)
			break
		}
		n2, err := n.Mkdir(r, intr)
		if err != nil {
			done(err)
			r.RespondError(err)
			break
		}
		c.saveLookup(&s.LookupResponse, snode, r.Name, n2)
		done(s)
		r.Respond(s)

	case *fuse.OpenRequest:
		s := &fuse.OpenResponse{Flags: fuse.OpenDirectIO}
		var h2 Handle
		if n, ok := node.(NodeOpener); ok {
			hh, err := n.Open(r, s, intr)
			if err != nil {
				done(err)
				r.RespondError(err)
				break
			}
			h2 = hh
		} else {
			h2 = node
		}
		s.Handle, _ = c.saveHandle(h2, hdr.Node)
		done(s)
		r.Respond(s)

	case *fuse.CreateRequest:
		n, ok := node.(NodeCreater)
		if !ok {
			// If we send back ENOSYS, FUSE will try mknod+open.
			done(fuse.EPERM)
			r.RespondError(fuse.EPERM)
			break
		}
		s := &fuse.CreateResponse{OpenResponse: fuse.OpenResponse{Flags: fuse.OpenDirectIO}}
		n2, h2, err := n.Create(r, s, intr)
		if err != nil {
			done(err)
			r.RespondError(err)
			break
		}
		c.saveLookup(&s.LookupResponse, snode, r.Name, n2)
		h, shandle := c.saveHandle(h2, hdr.Node)
		s.Handle = h
		type writeAll interface {
			WriteAll([]byte, Intr) fuse.Error
		}
		if _, ok := shandle.handle.(writeAll); ok {
			shandle.trunc = true
		}
		done(s)
		r.Respond(s)

	case *fuse.GetxattrRequest, *fuse.SetxattrRequest, *fuse.ListxattrRequest, *fuse.RemovexattrRequest:
		// TODO: Use n.
		done(fuse.ENOSYS)
		r.RespondError(fuse.ENOSYS)

	case *fuse.ForgetRequest:
		n, ok := node.(NodeForgetter)
		if ok {
			n.Forget()
		}
		c.dropNode(hdr.Node)
		done(r)
		r.Respond()

	// Handle operations.
	case *fuse.ReadRequest:
		shandle := c.getHandle(r.Handle)
		if shandle == nil {
			fuse.Debugf("-> %#x %v", hdr.ID, fuse.ESTALE)
			r.RespondError(fuse.ESTALE)
			return
		}
		handle := shandle.handle

		s := &fuse.ReadResponse{Data: make([]byte, 0, r.Size)}
		if r.Dir {
			if h, ok := handle.(HandleReadDirer); ok {
				if shandle.readData == nil {
					dirs, err := h.ReadDir(intr)
					if err != nil {
						done(err)
						r.RespondError(err)
						break
					}
					var data []byte
					for _, dir := range dirs {
						if dir.Inode == 0 {
							dir.Inode = hash(path.Join(snode.name, dir.Name))
						}
						data = fuse.AppendDirent(data, dir)
					}
					shandle.readData = data
				}
				fuseutil.HandleRead(r, s, shandle.readData)
				done(s)
				r.Respond(s)
				break
			}
		} else {
			if h, ok := handle.(HandleReadAller); ok {
				if shandle.readData == nil {
					data, err := h.ReadAll(intr)
					if err != nil {
						done(err)
						r.RespondError(err)
						break
					}
					if data == nil {
						data = []byte{}
					}
					shandle.readData = data
				}
				fuseutil.HandleRead(r, s, shandle.readData)
				done(s)
				r.Respond(s)
				break
			}
			h, ok := handle.(HandleReader)
			if !ok {
				fmt.Printf("NO READ FOR %T\n", handle)
				done(fuse.EIO)
				r.RespondError(fuse.EIO)
				break
			}
			if err := h.Read(r, s, intr); err != nil {
				done(err)
				r.RespondError(err)
				break
			}
		}
		done(s)
		r.Respond(s)

	case *fuse.WriteRequest:
		shandle := c.getHandle(r.Handle)
		if shandle == nil {
			fuse.Debugf("-> %#x %v", hdr.ID, fuse.ESTALE)
			r.RespondError(fuse.ESTALE)
			return
		}

		s := &fuse.WriteResponse{}
		if shandle.trunc && r.Offset == int64(len(shandle.writeData)) {
			shandle.writeData = append(shandle.writeData, r.Data...)
			s.Size = len(r.Data)
			done(s)
			r.Respond(s)
			break
		}
		if h, ok := shandle.handle.(HandleWriter); ok {
			if err := h.Write(r, s, intr); err != nil {
				done(err)
				r.RespondError(err)
				break
			}
			done(s)
			r.Respond(s)
			break
		}
		println("NO WRITE")
		done(fuse.EIO)
		r.RespondError(fuse.EIO)

	case *fuse.FlushRequest:
		shandle := c.getHandle(r.Handle)
		if shandle == nil {
			fuse.Debugf("-> %#x %v", hdr.ID, fuse.ESTALE)
			r.RespondError(fuse.ESTALE)
			return
		}
		handle := shandle.handle

		if shandle.trunc {
			h := handle.(HandleWriteAller)
			if err := h.WriteAll(shandle.writeData, intr); err != nil {
				done(err)
				r.RespondError(err)
				break
			}
			shandle.writeData = nil
			shandle.trunc = false
		}
		if h, ok := handle.(HandleFlusher); ok {
			if err := h.Flush(r, intr); err != nil {
				done(err)
				r.RespondError(err)
				break
			}
		}
		done(nil)
		r.Respond()

	case *fuse.ReleaseRequest:
		shandle := c.getHandle(r.Handle)
		if shandle == nil {
			fuse.Debugf("-> %#x %v", hdr.ID, fuse.ESTALE)
			r.RespondError(fuse.ESTALE)
			return
		}
		handle := shandle.handle

		// No matter what, release the handle.
		c.dropHandle(r.Handle)

		if h, ok := handle.(HandleReleaser); ok {
			if err := h.Release(r, intr); err != nil {
				done(err)
				r.RespondError(err)
				break
			}
		}
		done(nil)
		r.Respond()

	case *fuse.DestroyRequest:
		if fs, ok := fs.(FSDestroyer); ok {
			fs.Destroy()
		}
		done(nil)
		r.Respond()

	case *fuse.RenameRequest:
		c.meta.Lock()
		var newDirNode *serveNode
		if int(r.NewDir) < len(c.node) {
			newDirNode = c.node[r.NewDir]
		}
		c.meta.Unlock()
		if newDirNode == nil {
			println("RENAME NEW DIR NODE NOT FOUND")
			done(fuse.EIO)
			r.RespondError(fuse.EIO)
			break
		}
		n, ok := node.(NodeRenamer)
		if !ok {
			log.Printf("Node %T missing Rename method", node)
			done(fuse.EIO) // XXX or EPERM like Mkdir?
			r.RespondError(fuse.EIO)
			break
		}
		err := n.Rename(r, newDirNode.node, intr)
		if err != nil {
			done(err)
			r.RespondError(err)
			break
		}
		done(nil)
		r.Respond()

	case *fuse.MknodRequest:
		n, ok := node.(NodeMknoder)
		if !ok {
			log.Printf("Node %T missing Mknod method", node)
			done(fuse.EIO)
			r.RespondError(fuse.EIO)
			break
		}
		n2, err := n.Mknod(r, intr)
		if err != nil {
			done(err)
			r.RespondError(err)
			break
		}
		s := &fuse.LookupResponse{}
		c.saveLookup(s, snode, r.Name, n2)
		done(s)
		r.Respond(s)

	case *fuse.FsyncRequest:
		n, ok := node.(NodeFsyncer)
		if !ok {
			log.Printf("Node %T missing Fsync method", node)
			done(fuse.EIO)
			r.RespondError(fuse.EIO)
			break
		}
		err := n.Fsync(r, intr)
		if err != nil {
			done(err)
			r.RespondError(err)
			break
		}
		done(nil)
		r.Respond()

	case *fuse.InterruptRequest:
		c.meta.Lock()
		ireq := c.req[r.IntrID]
		if ireq != nil && ireq.Intr != nil {
			close(ireq.Intr)
			ireq.Intr = nil
		}
		c.meta.Unlock()
		done(nil)
		r.Respond()

		/*	case *FsyncdirRequest:
				done(ENOSYS)
				r.RespondError(ENOSYS)

			case *GetlkRequest, *SetlkRequest, *SetlkwRequest:
				done(ENOSYS)
				r.RespondError(ENOSYS)

			case *BmapRequest:
				done(ENOSYS)
				r.RespondError(ENOSYS)

			case *SetvolnameRequest, *GetxtimesRequest, *ExchangeRequest:
				done(ENOSYS)
				r.RespondError(ENOSYS)
		*/
	}
}
Esempio n. 9
0
func (sf StatFile) Read(ctx context.Context, req *fuse.ReadRequest, resp *fuse.ReadResponse) error {
	data, _ := sf.readAll()
	fuseutil.HandleRead(req, resp, data)
	return nil
}
Esempio n. 10
0
func (f *File) Read(ctx context.Context, req *fuse.ReadRequest, resp *fuse.ReadResponse) error {
	t := f.content.Load().(string)
	fuseutil.HandleRead(req, resp, []byte(t))
	return nil
}
Esempio n. 11
0
// handleRequest will either a) call done(s) and r.Respond(s) OR b) return an error.
func (c *Server) handleRequest(ctx context.Context, node Node, snode *serveNode, r fuse.Request, done func(resp interface{})) error {
	switch r := r.(type) {
	default:
		// Note: To FUSE, ENOSYS means "this server never implements this request."
		// It would be inappropriate to return ENOSYS for other operations in this
		// switch that might only be unavailable in some contexts, not all.
		return fuse.ENOSYS

	case *fuse.StatfsRequest:
		s := &fuse.StatfsResponse{}
		if fs, ok := c.fs.(FSStatfser); ok {
			if err := fs.Statfs(ctx, r, s); err != nil {
				return err
			}
		}
		done(s)
		r.Respond(s)
		return nil

	// Node operations.
	case *fuse.GetattrRequest:
		s := &fuse.GetattrResponse{}
		if n, ok := node.(NodeGetattrer); ok {
			if err := n.Getattr(ctx, r, s); err != nil {
				return err
			}
		} else {
			if err := snode.attr(ctx, &s.Attr); err != nil {
				return err
			}
		}
		done(s)
		r.Respond(s)
		return nil

	case *fuse.SetattrRequest:
		s := &fuse.SetattrResponse{}
		if n, ok := node.(NodeSetattrer); ok {
			if err := n.Setattr(ctx, r, s); err != nil {
				return err
			}
		}

		if err := snode.attr(ctx, &s.Attr); err != nil {
			return err
		}
		done(s)
		r.Respond(s)
		return nil

	case *fuse.SymlinkRequest:
		s := &fuse.SymlinkResponse{}
		initLookupResponse(&s.LookupResponse)
		n, ok := node.(NodeSymlinker)
		if !ok {
			return fuse.EIO // XXX or EPERM like Mkdir?
		}
		n2, err := n.Symlink(ctx, r)
		if err != nil {
			return err
		}
		if err := c.saveLookup(ctx, &s.LookupResponse, snode, r.NewName, n2); err != nil {
			return err
		}
		done(s)
		r.Respond(s)
		return nil

	case *fuse.ReadlinkRequest:
		n, ok := node.(NodeReadlinker)
		if !ok {
			return fuse.EIO /// XXX or EPERM?
		}
		target, err := n.Readlink(ctx, r)
		if err != nil {
			return err
		}
		done(target)
		r.Respond(target)
		return nil

	case *fuse.LinkRequest:
		n, ok := node.(NodeLinker)
		if !ok {
			return fuse.EIO /// XXX or EPERM?
		}
		c.meta.Lock()
		var oldNode *serveNode
		if int(r.OldNode) < len(c.node) {
			oldNode = c.node[r.OldNode]
		}
		c.meta.Unlock()
		if oldNode == nil {
			c.debug(logLinkRequestOldNodeNotFound{
				Request: r.Hdr(),
				In:      r,
			})
			return fuse.EIO
		}
		n2, err := n.Link(ctx, r, oldNode.node)
		if err != nil {
			return err
		}
		s := &fuse.LookupResponse{}
		initLookupResponse(s)
		if err := c.saveLookup(ctx, s, snode, r.NewName, n2); err != nil {
			return err
		}
		done(s)
		r.Respond(s)
		return nil

	case *fuse.RemoveRequest:
		n, ok := node.(NodeRemover)
		if !ok {
			return fuse.EIO /// XXX or EPERM?
		}
		err := n.Remove(ctx, r)
		if err != nil {
			return err
		}
		done(nil)
		r.Respond()
		return nil

	case *fuse.AccessRequest:
		if n, ok := node.(NodeAccesser); ok {
			if err := n.Access(ctx, r); err != nil {
				return err
			}
		}
		done(nil)
		r.Respond()
		return nil

	case *fuse.LookupRequest:
		var n2 Node
		var err error
		s := &fuse.LookupResponse{}
		initLookupResponse(s)
		if n, ok := node.(NodeStringLookuper); ok {
			n2, err = n.Lookup(ctx, r.Name)
		} else if n, ok := node.(NodeRequestLookuper); ok {
			n2, err = n.Lookup(ctx, r, s)
		} else {
			return fuse.ENOENT
		}
		if err != nil {
			return err
		}
		if err := c.saveLookup(ctx, s, snode, r.Name, n2); err != nil {
			return err
		}
		done(s)
		r.Respond(s)
		return nil

	case *fuse.MkdirRequest:
		s := &fuse.MkdirResponse{}
		initLookupResponse(&s.LookupResponse)
		n, ok := node.(NodeMkdirer)
		if !ok {
			return fuse.EPERM
		}
		n2, err := n.Mkdir(ctx, r)
		if err != nil {
			return err
		}
		if err := c.saveLookup(ctx, &s.LookupResponse, snode, r.Name, n2); err != nil {
			return err
		}
		done(s)
		r.Respond(s)
		return nil

	case *fuse.OpenRequest:
		s := &fuse.OpenResponse{}
		var h2 Handle
		if n, ok := node.(NodeOpener); ok {
			hh, err := n.Open(ctx, r, s)
			if err != nil {
				return err
			}
			h2 = hh
		} else {
			h2 = node
		}
		s.Handle = c.saveHandle(h2, r.Hdr().Node)
		done(s)
		r.Respond(s)
		return nil

	case *fuse.CreateRequest:
		n, ok := node.(NodeCreater)
		if !ok {
			// If we send back ENOSYS, FUSE will try mknod+open.
			return fuse.EPERM
		}
		s := &fuse.CreateResponse{OpenResponse: fuse.OpenResponse{}}
		initLookupResponse(&s.LookupResponse)
		n2, h2, err := n.Create(ctx, r, s)
		if err != nil {
			return err
		}
		if err := c.saveLookup(ctx, &s.LookupResponse, snode, r.Name, n2); err != nil {
			return err
		}
		s.Handle = c.saveHandle(h2, r.Hdr().Node)
		done(s)
		r.Respond(s)
		return nil

	case *fuse.GetxattrRequest:
		n, ok := node.(NodeGetxattrer)
		if !ok {
			return fuse.ENOTSUP
		}
		s := &fuse.GetxattrResponse{}
		err := n.Getxattr(ctx, r, s)
		if err != nil {
			return err
		}
		if r.Size != 0 && uint64(len(s.Xattr)) > uint64(r.Size) {
			return fuse.ERANGE
		}
		done(s)
		r.Respond(s)
		return nil

	case *fuse.ListxattrRequest:
		n, ok := node.(NodeListxattrer)
		if !ok {
			return fuse.ENOTSUP
		}
		s := &fuse.ListxattrResponse{}
		err := n.Listxattr(ctx, r, s)
		if err != nil {
			return err
		}
		if r.Size != 0 && uint64(len(s.Xattr)) > uint64(r.Size) {
			return fuse.ERANGE
		}
		done(s)
		r.Respond(s)
		return nil

	case *fuse.SetxattrRequest:
		n, ok := node.(NodeSetxattrer)
		if !ok {
			return fuse.ENOTSUP
		}
		err := n.Setxattr(ctx, r)
		if err != nil {
			return err
		}
		done(nil)
		r.Respond()
		return nil

	case *fuse.RemovexattrRequest:
		n, ok := node.(NodeRemovexattrer)
		if !ok {
			return fuse.ENOTSUP
		}
		err := n.Removexattr(ctx, r)
		if err != nil {
			return err
		}
		done(nil)
		r.Respond()
		return nil

	case *fuse.ForgetRequest:
		forget := c.dropNode(r.Hdr().Node, r.N)
		if forget {
			n, ok := node.(NodeForgetter)
			if ok {
				n.Forget()
			}
		}
		done(nil)
		r.Respond()
		return nil

	// Handle operations.
	case *fuse.ReadRequest:
		shandle := c.getHandle(r.Handle)
		if shandle == nil {
			return fuse.ESTALE
		}
		handle := shandle.handle

		s := &fuse.ReadResponse{Data: make([]byte, 0, r.Size)}
		if r.Dir {
			if h, ok := handle.(HandleReadDirAller); ok {
				// detect rewinddir(3) or similar seek and refresh
				// contents
				if r.Offset == 0 {
					shandle.readData = nil
				}

				if shandle.readData == nil {
					dirs, err := h.ReadDirAll(ctx)
					if err != nil {
						return err
					}
					var data []byte
					for _, dir := range dirs {
						if dir.Inode == 0 {
							dir.Inode = c.dynamicInode(snode.inode, dir.Name)
						}
						data = fuse.AppendDirent(data, dir)
					}
					shandle.readData = data
				}
				fuseutil.HandleRead(r, s, shandle.readData)
				done(s)
				r.Respond(s)
				return nil
			}
		} else {
			if h, ok := handle.(HandleReadAller); ok {
				if shandle.readData == nil {
					data, err := h.ReadAll(ctx)
					if err != nil {
						return err
					}
					if data == nil {
						data = []byte{}
					}
					shandle.readData = data
				}
				fuseutil.HandleRead(r, s, shandle.readData)
				done(s)
				r.Respond(s)
				return nil
			}
			h, ok := handle.(HandleReader)
			if !ok {
				err := handleNotReaderError{handle: handle}
				return err
			}
			if err := h.Read(ctx, r, s); err != nil {
				return err
			}
		}
		done(s)
		r.Respond(s)
		return nil

	case *fuse.WriteRequest:
		shandle := c.getHandle(r.Handle)
		if shandle == nil {
			return fuse.ESTALE
		}

		s := &fuse.WriteResponse{}
		if h, ok := shandle.handle.(HandleWriter); ok {
			if err := h.Write(ctx, r, s); err != nil {
				return err
			}
			done(s)
			r.Respond(s)
			return nil
		}
		return fuse.EIO

	case *fuse.FlushRequest:
		shandle := c.getHandle(r.Handle)
		if shandle == nil {
			return fuse.ESTALE
		}
		handle := shandle.handle

		if h, ok := handle.(HandleFlusher); ok {
			if err := h.Flush(ctx, r); err != nil {
				return err
			}
		}
		done(nil)
		r.Respond()
		return nil

	case *fuse.ReleaseRequest:
		shandle := c.getHandle(r.Handle)
		if shandle == nil {
			return fuse.ESTALE
		}
		handle := shandle.handle

		// No matter what, release the handle.
		c.dropHandle(r.Handle)

		if h, ok := handle.(HandleReleaser); ok {
			if err := h.Release(ctx, r); err != nil {
				return err
			}
		}
		done(nil)
		r.Respond()
		return nil

	case *fuse.DestroyRequest:
		if fs, ok := c.fs.(FSDestroyer); ok {
			fs.Destroy()
		}
		done(nil)
		r.Respond()
		return nil

	case *fuse.RenameRequest:
		c.meta.Lock()
		var newDirNode *serveNode
		if int(r.NewDir) < len(c.node) {
			newDirNode = c.node[r.NewDir]
		}
		c.meta.Unlock()
		if newDirNode == nil {
			c.debug(renameNewDirNodeNotFound{
				Request: r.Hdr(),
				In:      r,
			})
			return fuse.EIO
		}
		n, ok := node.(NodeRenamer)
		if !ok {
			return fuse.EIO // XXX or EPERM like Mkdir?
		}
		err := n.Rename(ctx, r, newDirNode.node)
		if err != nil {
			return err
		}
		done(nil)
		r.Respond()
		return nil

	case *fuse.MknodRequest:
		n, ok := node.(NodeMknoder)
		if !ok {
			return fuse.EIO
		}
		n2, err := n.Mknod(ctx, r)
		if err != nil {
			return err
		}
		s := &fuse.LookupResponse{}
		initLookupResponse(s)
		if err := c.saveLookup(ctx, s, snode, r.Name, n2); err != nil {
			return err
		}
		done(s)
		r.Respond(s)
		return nil

	case *fuse.FsyncRequest:
		n, ok := node.(NodeFsyncer)
		if !ok {
			return fuse.EIO
		}
		err := n.Fsync(ctx, r)
		if err != nil {
			return err
		}
		done(nil)
		r.Respond()
		return nil

	case *fuse.InterruptRequest:
		c.meta.Lock()
		ireq := c.req[r.IntrID]
		if ireq != nil && ireq.cancel != nil {
			ireq.cancel()
			ireq.cancel = nil
		}
		c.meta.Unlock()
		done(nil)
		r.Respond()
		return nil

		/*	case *FsyncdirRequest:
				return ENOSYS

			case *GetlkRequest, *SetlkRequest, *SetlkwRequest:
				return ENOSYS

			case *BmapRequest:
				return ENOSYS

			case *SetvolnameRequest, *GetxtimesRequest, *ExchangeRequest:
				return ENOSYS
		*/
	}

	panic("not reached")
}
Esempio n. 12
0
func (readWithHandleRead) Read(req *fuse.ReadRequest, resp *fuse.ReadResponse, intr fs.Intr) fuse.Error {
	fuseutil.HandleRead(req, resp, []byte(hi))
	return nil
}
Esempio n. 13
0
func (f *inMemoryFile) Read(req *fuse.ReadRequest, resp *fuse.ReadResponse, intr fs.Intr) fuse.Error {
	fuseutil.HandleRead(req, resp, f.data)
	return nil
}