Commit bfaeb760 authored by Han-Wen Nienhuys's avatar Han-Wen Nienhuys

nodefs: comment ExampleNewPersistentInode

parent 3377c503
......@@ -208,43 +208,58 @@ func (zr *zipRoot) OnAdd(ctx context.Context) {
}
}
// ExampleNewPersistentInode shows how to create a in-memory file
// system a prefabricated tree.
func ExampleNewPersistentInode() {
// Persistent inodes can be used to create an in-memory
// prefabricated file system tree.
func ExampleInode_NewPersistentInode() {
// This is where we'll mount the FS
mntDir, _ := ioutil.TempDir("", "")
files := map[string]string{
"file": "content",
"subdir/other-file": "content",
"subdir/other-file": "other-content",
}
root := &Inode{}
server, err := Mount(mntDir, root, &Options{
MountOptions: fuse.MountOptions{Debug: true},
OnAdd: func(ctx context.Context) {
populate := func(ctx context.Context) {
for name, content := range files {
dir, base := filepath.Split(name)
p := root
// Add directories leading up to the file.
for _, component := range strings.Split(dir, "/") {
if len(component) == 0 {
continue
}
ch := p.GetChild(component)
if ch == nil {
// Create a directory
ch = p.NewPersistentInode(ctx, &Inode{},
NodeAttr{Mode: syscall.S_IFDIR})
// Add it
p.AddChild(component, ch, true)
}
p = ch
}
// Create the file
child := p.NewPersistentInode(ctx, &MemRegularFile{
Data: []byte(content),
}, NodeAttr{})
// And add it
p.AddChild(base, child, true)
}
},
}
server, err := Mount(mntDir, root, &Options{
MountOptions: fuse.MountOptions{Debug: true},
// This adds read permissions to the files and
// directories, which is necessary for doing a chdir
// into the mount.
DefaultPermissions: true,
OnAdd: populate,
})
if err != nil {
log.Panic(err)
......
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