1 files changed, 78 insertions, 0 deletions
diff --git a/pkg/sentry/devices/miscdev/fuse.go b/pkg/sentry/devices/miscdev/fuse.go
new file mode 100644
index 000000000..d0a963191
--- /dev/null
+++ b/pkg/sentry/devices/miscdev/fuse.go
@@ -0,0 +1,78 @@
+// Copyright 2020 The gVisor Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package miscdev
+
+import (
+	"gvisor.dev/gvisor/pkg/context"
+	"gvisor.dev/gvisor/pkg/sentry/vfs"
+	"gvisor.dev/gvisor/pkg/syserror"
+	"gvisor.dev/gvisor/pkg/usermem"
+)
+
+const fuseDevMinor = 229
+
+// fuseDevice implements vfs.Device for /dev/fuse.
+type fuseDevice struct{}
+
+// Open implements vfs.Device.Open.
+func (fuseDevice) Open(ctx context.Context, mnt *vfs.Mount, vfsd *vfs.Dentry, opts vfs.OpenOptions) (*vfs.FileDescription, error) {
+	var fd FUSEDeviceFile
+	if err := fd.vfsfd.Init(&fd, opts.Flags, mnt, vfsd, &vfs.FileDescriptionOptions{
+		UseDentryMetadata: true,
+	}); err != nil {
+		return nil, err
+	}
+	return &fd.vfsfd, nil
+}
+
+// FUSEDeviceFile implements vfs.FileDescriptionImpl for /dev/fuse.
+type FUSEDeviceFile struct {
+	vfsfd vfs.FileDescription
+	vfs.FileDescriptionDefaultImpl
+	vfs.DentryMetadataFileDescriptionImpl
+	vfs.NoLockFD
+
+	// TODO(gvisor.dev/issue/2987): Add all the data structures needed to enqueue
+	// and deque requests, control synchronization and establish communication
+	// between the FUSE kernel module and the /dev/fuse character device.
+}
+
+// Release implements vfs.FileDescriptionImpl.Release.
+func (fd *FUSEDeviceFile) Release() {}
+
+// PRead implements vfs.FileDescriptionImpl.PRead.
+func (fd *FUSEDeviceFile) PRead(ctx context.Context, dst usermem.IOSequence, offset int64, opts vfs.ReadOptions) (int64, error) {
+	return 0, syserror.ENOSYS
+}
+
+// Read implements vfs.FileDescriptionImpl.Read.
+func (fd *FUSEDeviceFile) Read(ctx context.Context, dst usermem.IOSequence, opts vfs.ReadOptions) (int64, error) {
+	return 0, syserror.ENOSYS
+}
+
+// PWrite implements vfs.FileDescriptionImpl.PWrite.
+func (fd *FUSEDeviceFile) PWrite(ctx context.Context, src usermem.IOSequence, offset int64, opts vfs.WriteOptions) (int64, error) {
+	return 0, syserror.ENOSYS
+}
+
+// Write implements vfs.FileDescriptionImpl.Write.
+func (fd *FUSEDeviceFile) Write(ctx context.Context, src usermem.IOSequence, opts vfs.WriteOptions) (int64, error) {
+	return 0, syserror.ENOSYS
+}
+
+// Seek implements vfs.FileDescriptionImpl.Seek.
+func (fd *FUSEDeviceFile) Seek(ctx context.Context, offset int64, whence int32) (int64, error) {
+	return 0, syserror.ENOSYS
+}