Hide DefaultRawFileSystem type to reduce API clutter.

fuse/api.go

@@ -223,7 +223,7 @@ type MountOptions struct {
 // interactions with open files, renames, and threading right etc. are
 // somewhat tricky and not very interesting.
 //
-// Include DefaultRawFileSystem to inherit a null implementation.
+// A null implementation is provided by NewDefaultRawFileSystem.
 type RawFileSystem interface {
 	String() string
 
@@ -280,9 +280,6 @@ type RawFileSystem interface {
 	Init(params *RawFsInit)
 }
 
-// DefaultRawFileSystem returns ENOSYS for every operation.
-type DefaultRawFileSystem struct{}
-
 // Talk back to FUSE.
 //
 // InodeNotify invalidates the information associated with the inode

fuse/defaultraw.go

@@ -6,135 +6,142 @@ import (
 	"os"
 )
 
-var _ = RawFileSystem((*DefaultRawFileSystem)(nil))
+// NewDefaultRawFileSystem returns ENOSYS (not implemented) for all
+// operations.
+func NewDefaultRawFileSystem() RawFileSystem {
+	return &defaultRawFileSystem{}
+}
+
+type defaultRawFileSystem struct{}
+
 
-func (fs *DefaultRawFileSystem) Init(init *RawFsInit) {
+func (fs *defaultRawFileSystem) Init(init *RawFsInit) {
 }
 
-func (fs *DefaultRawFileSystem) String() string {
+func (fs *defaultRawFileSystem) String() string {
 	return os.Args[0]
 }
 
-func (fs *DefaultRawFileSystem) SetDebug(dbg bool) {
+func (fs *defaultRawFileSystem) SetDebug(dbg bool) {
 }
 
-func (fs *DefaultRawFileSystem) StatFs(out *StatfsOut, context *Context) Status {
+func (fs *defaultRawFileSystem) StatFs(out *StatfsOut, context *Context) Status {
 	return ENOSYS
 }
 
-func (fs *DefaultRawFileSystem) Lookup(out *raw.EntryOut, context *Context, name string) (code Status) {
+func (fs *defaultRawFileSystem) Lookup(out *raw.EntryOut, context *Context, name string) (code Status) {
 	return ENOSYS
 }
 
-func (fs *DefaultRawFileSystem) Forget(nodeID, nlookup uint64) {
+func (fs *defaultRawFileSystem) Forget(nodeID, nlookup uint64) {
 }
 
-func (fs *DefaultRawFileSystem) GetAttr(out *raw.AttrOut, context *Context, input *raw.GetAttrIn) (code Status) {
+func (fs *defaultRawFileSystem) GetAttr(out *raw.AttrOut, context *Context, input *raw.GetAttrIn) (code Status) {
 	return ENOSYS
 }
 
-func (fs *DefaultRawFileSystem) Open(out *raw.OpenOut, context *Context, input *raw.OpenIn) (status Status) {
+func (fs *defaultRawFileSystem) Open(out *raw.OpenOut, context *Context, input *raw.OpenIn) (status Status) {
 	return OK
 }
 
-func (fs *DefaultRawFileSystem) SetAttr(out *raw.AttrOut, context *Context, input *raw.SetAttrIn) (code Status) {
+func (fs *defaultRawFileSystem) SetAttr(out *raw.AttrOut, context *Context, input *raw.SetAttrIn) (code Status) {
 	return ENOSYS
 }
 
-func (fs *DefaultRawFileSystem) Readlink(context *Context) (out []byte, code Status) {
+func (fs *defaultRawFileSystem) Readlink(context *Context) (out []byte, code Status) {
 	return nil, ENOSYS
 }
 
-func (fs *DefaultRawFileSystem) Mknod(out *raw.EntryOut, context *Context, input *raw.MknodIn, name string) (code Status) {
+func (fs *defaultRawFileSystem) Mknod(out *raw.EntryOut, context *Context, input *raw.MknodIn, name string) (code Status) {
 	return ENOSYS
 }
 
-func (fs *DefaultRawFileSystem) Mkdir(out *raw.EntryOut, context *Context, input *raw.MkdirIn, name string) (code Status) {
+func (fs *defaultRawFileSystem) Mkdir(out *raw.EntryOut, context *Context, input *raw.MkdirIn, name string) (code Status) {
 	return ENOSYS
 }
 
-func (fs *DefaultRawFileSystem) Unlink(context *Context, name string) (code Status) {
+func (fs *defaultRawFileSystem) Unlink(context *Context, name string) (code Status) {
 	return ENOSYS
 }
 
-func (fs *DefaultRawFileSystem) Rmdir(context *Context, name string) (code Status) {
+func (fs *defaultRawFileSystem) Rmdir(context *Context, name string) (code Status) {
 	return ENOSYS
 }
 
-func (fs *DefaultRawFileSystem) Symlink(out *raw.EntryOut, context *Context, pointedTo string, linkName string) (code Status) {
+func (fs *defaultRawFileSystem) Symlink(out *raw.EntryOut, context *Context, pointedTo string, linkName string) (code Status) {
 	return ENOSYS
 }
 
-func (fs *DefaultRawFileSystem) Rename(context *Context, input *raw.RenameIn, oldName string, newName string) (code Status) {
+func (fs *defaultRawFileSystem) Rename(context *Context, input *raw.RenameIn, oldName string, newName string) (code Status) {
 	return ENOSYS
 }
 
-func (fs *DefaultRawFileSystem) Link(out *raw.EntryOut, context *Context, input *raw.LinkIn, name string) (code Status) {
+func (fs *defaultRawFileSystem) Link(out *raw.EntryOut, context *Context, input *raw.LinkIn, name string) (code Status) {
 	return ENOSYS
 }
 
-func (fs *DefaultRawFileSystem) GetXAttrSize(context *Context, attr string) (size int, code Status) {
+func (fs *defaultRawFileSystem) GetXAttrSize(context *Context, attr string) (size int, code Status) {
 	return 0, ENOSYS
 }
 
-func (fs *DefaultRawFileSystem) GetXAttrData(context *Context, attr string) (data []byte, code Status) {
+func (fs *defaultRawFileSystem) GetXAttrData(context *Context, attr string) (data []byte, code Status) {
 	return nil, ENOSYS
 }
 
-func (fs *DefaultRawFileSystem) SetXAttr(context *Context, input *raw.SetXAttrIn, attr string, data []byte) Status {
+func (fs *defaultRawFileSystem) SetXAttr(context *Context, input *raw.SetXAttrIn, attr string, data []byte) Status {
 	return ENOSYS
 }
 
-func (fs *DefaultRawFileSystem) ListXAttr(context *Context) (data []byte, code Status) {
+func (fs *defaultRawFileSystem) ListXAttr(context *Context) (data []byte, code Status) {
 	return nil, ENOSYS
 }
 
-func (fs *DefaultRawFileSystem) RemoveXAttr(context *Context, attr string) Status {
+func (fs *defaultRawFileSystem) RemoveXAttr(context *Context, attr string) Status {
 	return ENOSYS
 }
 
-func (fs *DefaultRawFileSystem) Access(context *Context, input *raw.AccessIn) (code Status) {
+func (fs *defaultRawFileSystem) Access(context *Context, input *raw.AccessIn) (code Status) {
 	return ENOSYS
 }
 
-func (fs *DefaultRawFileSystem) Create(out *raw.CreateOut, context *Context, input *raw.CreateIn, name string) (code Status) {
+func (fs *defaultRawFileSystem) Create(out *raw.CreateOut, context *Context, input *raw.CreateIn, name string) (code Status) {
 	return ENOSYS
 }
 
-func (fs *DefaultRawFileSystem) OpenDir(out *raw.OpenOut, context *Context, input *raw.OpenIn) (status Status) {
+func (fs *defaultRawFileSystem) OpenDir(out *raw.OpenOut, context *Context, input *raw.OpenIn) (status Status) {
 	return ENOSYS
 }
 
-func (fs *DefaultRawFileSystem) Read(context *Context, input *raw.ReadIn, buf []byte) (ReadResult, Status) {
+func (fs *defaultRawFileSystem) Read(context *Context, input *raw.ReadIn, buf []byte) (ReadResult, Status) {
 	return &ReadResultData{}, ENOSYS
 }
 
-func (fs *DefaultRawFileSystem) Release(context *Context, input *raw.ReleaseIn) {
+func (fs *defaultRawFileSystem) Release(context *Context, input *raw.ReleaseIn) {
 }
 
-func (fs *DefaultRawFileSystem) Write(context *Context, input *raw.WriteIn, data []byte) (written uint32, code Status) {
+func (fs *defaultRawFileSystem) Write(context *Context, input *raw.WriteIn, data []byte) (written uint32, code Status) {
 	return 0, ENOSYS
 }
 
-func (fs *DefaultRawFileSystem) Flush(context *Context, input *raw.FlushIn) Status {
+func (fs *defaultRawFileSystem) Flush(context *Context, input *raw.FlushIn) Status {
 	return OK
 }
 
-func (fs *DefaultRawFileSystem) Fsync(context *Context, input *raw.FsyncIn) (code Status) {
+func (fs *defaultRawFileSystem) Fsync(context *Context, input *raw.FsyncIn) (code Status) {
 	return ENOSYS
 }
 
-func (fs *DefaultRawFileSystem) ReadDir(l *DirEntryList, context *Context, input *raw.ReadIn) Status {
+func (fs *defaultRawFileSystem) ReadDir(l *DirEntryList, context *Context, input *raw.ReadIn) Status {
 	return ENOSYS
 }
 
-func (fs *DefaultRawFileSystem) ReleaseDir(context *Context, input *raw.ReleaseIn) {
+func (fs *defaultRawFileSystem) ReleaseDir(context *Context, input *raw.ReleaseIn) {
 }
 
-func (fs *DefaultRawFileSystem) FsyncDir(context *Context, input *raw.FsyncIn) (code Status) {
+func (fs *defaultRawFileSystem) FsyncDir(context *Context, input *raw.FsyncIn) (code Status) {
 	return ENOSYS
 }
 
-func (fs *DefaultRawFileSystem) Fallocate(context *Context, in *raw.FallocateIn) (code Status) {
+func (fs *defaultRawFileSystem) Fallocate(context *Context, in *raw.FallocateIn) (code Status) {
 	return ENOSYS
 }