Use FileSystem in hellofs.
parent
54d3fee527
commit
a01f4b6ae5
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@ -33,56 +33,20 @@ import (
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//
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// Each file contains the string "Hello, world!".
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func NewHelloFS(clock timeutil.Clock) (server fuse.Server, err error) {
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server = &helloFS{
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fs := &helloFS{
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Clock: clock,
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}
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server = fuseutil.NewFileSystemServer(fs)
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return
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}
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type helloFS struct {
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fuseutil.NotImplementedFileSystem
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Clock timeutil.Clock
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}
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func (fs *helloFS) ServeOps(c *fuse.Connection) {
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for {
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op, err := c.ReadOp()
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if err == io.EOF {
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break
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}
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if err != nil {
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panic(err)
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}
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switch typed := op.(type) {
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case *fuseops.InitOp:
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fs.init(typed)
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case *fuseops.LookUpInodeOp:
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fs.lookUpInode(typed)
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case *fuseops.GetInodeAttributesOp:
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fs.getInodeAttributes(typed)
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case *fuseops.OpenDirOp:
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fs.openDir(typed)
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case *fuseops.ReadDirOp:
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fs.readDir(typed)
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case *fuseops.OpenFileOp:
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fs.openFile(typed)
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case *fuseops.ReadFileOp:
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fs.readFile(typed)
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default:
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typed.Respond(fuse.ENOSYS)
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}
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}
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}
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const (
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rootInode fuseops.InodeID = fuseops.RootInodeID + iota
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helloInode
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@ -183,14 +147,11 @@ func (fs *helloFS) patchAttributes(
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attr.Crtime = now
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}
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func (fs *helloFS) init(op *fuseops.InitOp) {
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op.Respond(nil)
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func (fs *helloFS) Init(op *fuseops.InitOp) (err error) {
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return
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}
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func (fs *helloFS) lookUpInode(op *fuseops.LookUpInodeOp) {
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var err error
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defer func() { op.Respond(err) }()
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func (fs *helloFS) LookUpInode(op *fuseops.LookUpInodeOp) (err error) {
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// Find the info for the parent.
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parentInfo, ok := gInodeInfo[op.Parent]
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if !ok {
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@ -214,10 +175,8 @@ func (fs *helloFS) lookUpInode(op *fuseops.LookUpInodeOp) {
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return
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}
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func (fs *helloFS) getInodeAttributes(op *fuseops.GetInodeAttributesOp) {
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var err error
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defer func() { op.Respond(err) }()
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func (fs *helloFS) GetInodeAttributes(
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op *fuseops.GetInodeAttributesOp) (err error) {
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// Find the info for this inode.
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info, ok := gInodeInfo[op.Inode]
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if !ok {
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@ -234,15 +193,14 @@ func (fs *helloFS) getInodeAttributes(op *fuseops.GetInodeAttributesOp) {
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return
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}
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func (fs *helloFS) openDir(op *fuseops.OpenDirOp) {
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func (fs *helloFS) OpenDir(
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op *fuseops.OpenDirOp) (err error) {
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// Allow opening any directory.
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op.Respond(nil)
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return
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}
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func (fs *helloFS) readDir(op *fuseops.ReadDirOp) {
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var err error
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defer func() { op.Respond(err) }()
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func (fs *helloFS) ReadDir(
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op *fuseops.ReadDirOp) (err error) {
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// Find the info for this inode.
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info, ok := gInodeInfo[op.Inode]
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if !ok {
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@ -277,15 +235,14 @@ func (fs *helloFS) readDir(op *fuseops.ReadDirOp) {
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return
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}
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func (fs *helloFS) openFile(op *fuseops.OpenFileOp) {
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func (fs *helloFS) OpenFile(
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op *fuseops.OpenFileOp) (err error) {
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// Allow opening any file.
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op.Respond(nil)
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return
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}
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func (fs *helloFS) readFile(op *fuseops.ReadFileOp) {
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var err error
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defer func() { op.Respond(err) }()
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func (fs *helloFS) ReadFile(
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op *fuseops.ReadFileOp) (err error) {
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// Let io.ReaderAt deal with the semantics.
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reader := strings.NewReader("Hello, world!")
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