Other HelloFS methods.
Aaron Jacobs
parent
32d8d19879
commit
5a83972716
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@ -23,7 +23,6 @@ import (
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"github.com/jacobsa/fuse"
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"github.com/jacobsa/fuse/fuseops"
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"github.com/jacobsa/fuse/fuseutil"
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"golang.org/x/net/context"
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)
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// A file system with a fixed structure that looks like this:
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@ -137,76 +136,68 @@ 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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func (fs *HelloFS) init(op *fuseops.InitOp) {
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op.Respond(nil)
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}
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func (fs *HelloFS) LookUpInode(
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ctx context.Context,
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req *fuse.LookUpInodeRequest) (
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resp *fuse.LookUpInodeResponse, err error) {
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resp = &fuse.LookUpInodeResponse{}
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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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// Find the info for the parent.
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parentInfo, ok := gInodeInfo[req.Parent]
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parentInfo, ok := gInodeInfo[op.Parent]
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if !ok {
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err = fuse.ENOENT
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return
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}
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// Find the child within the parent.
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childInode, err := findChildInode(req.Name, parentInfo.children)
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childInode, err := findChildInode(op.Name, parentInfo.children)
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if err != nil {
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return
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}
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// Copy over information.
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resp.Entry.Child = childInode
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resp.Entry.Attributes = gInodeInfo[childInode].attributes
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op.Entry.Child = childInode
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op.Entry.Attributes = gInodeInfo[childInode].attributes
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// Patch attributes.
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fs.patchAttributes(&resp.Entry.Attributes)
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fs.patchAttributes(&op.Entry.Attributes)
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return
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}
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func (fs *HelloFS) GetInodeAttributes(
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ctx context.Context,
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req *fuse.GetInodeAttributesRequest) (
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resp *fuse.GetInodeAttributesResponse, err error) {
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resp = &fuse.GetInodeAttributesResponse{}
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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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// Find the info for this inode.
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info, ok := gInodeInfo[req.Inode]
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info, ok := gInodeInfo[op.Inode]
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if !ok {
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err = fuse.ENOENT
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return
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}
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// Copy over its attributes.
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resp.Attributes = info.attributes
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op.Attributes = info.attributes
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// Patch attributes.
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fs.patchAttributes(&resp.Attributes)
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fs.patchAttributes(&op.Attributes)
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return
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}
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func (fs *HelloFS) OpenDir(
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ctx context.Context,
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req *fuse.OpenDirRequest) (resp *fuse.OpenDirResponse, err error) {
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func (fs *HelloFS) openDir(op *fuseops.OpenDirOp) {
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// Allow opening any directory.
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resp = &fuse.OpenDirResponse{}
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return
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op.Respond(nil)
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}
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func (fs *HelloFS) ReadDir(
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ctx context.Context,
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req *fuse.ReadDirRequest) (resp *fuse.ReadDirResponse, err error) {
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resp = &fuse.ReadDirResponse{}
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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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// Find the info for this inode.
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info, ok := gInodeInfo[req.Inode]
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info, ok := gInodeInfo[op.Inode]
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if !ok {
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err = fuse.ENOENT
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return
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@ -220,18 +211,18 @@ func (fs *HelloFS) ReadDir(
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entries := info.children
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// Grab the range of interest.
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if req.Offset > fuse.DirOffset(len(entries)) {
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if op.Offset > fuse.DirOffset(len(entries)) {
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err = fuse.EIO
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return
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}
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entries = entries[req.Offset:]
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entries = entries[op.Offset:]
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// Resume at the specified offset into the array.
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for _, e := range entries {
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resp.Data = fuseutil.AppendDirent(resp.Data, e)
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if len(resp.Data) > req.Size {
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resp.Data = resp.Data[:req.Size]
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op.Data = fuseutil.AppendDirent(op.Data, e)
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if len(op.Data) > op.Size {
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op.Data = op.Data[:op.Size]
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break
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}
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}
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@ -239,25 +230,21 @@ func (fs *HelloFS) ReadDir(
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return
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}
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func (fs *HelloFS) OpenFile(
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ctx context.Context,
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req *fuse.OpenFileRequest) (resp *fuse.OpenFileResponse, err error) {
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func (fs *HelloFS) openFile(op *fuseops.OpenFileOp) {
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// Allow opening any file.
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resp = &fuse.OpenFileResponse{}
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return
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op.Respond(nil)
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}
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func (fs *HelloFS) ReadFile(
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ctx context.Context,
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req *fuse.ReadFileRequest) (resp *fuse.ReadFileResponse, err error) {
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resp = &fuse.ReadFileResponse{}
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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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// Let io.ReaderAt deal with the semantics.
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reader := strings.NewReader("Hello, world!")
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resp.Data = make([]byte, req.Size)
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n, err := reader.ReadAt(resp.Data, req.Offset)
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resp.Data = resp.Data[:n]
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op.Data = make([]byte, op.Size)
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n, err := reader.ReadAt(op.Data, op.Offset)
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op.Data = op.Data[:n]
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// Special case: FUSE doesn't expect us to return io.EOF.
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if err == io.EOF {
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