mirror of https://github.com/octoleo/restic.git
102 lines
1.8 KiB
Go
102 lines
1.8 KiB
Go
// Hellofs implements a simple "hello world" file system.
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package main
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import (
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"flag"
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"fmt"
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"log"
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"os"
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"bazil.org/fuse"
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"bazil.org/fuse/fs"
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_ "bazil.org/fuse/fs/fstestutil"
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"golang.org/x/net/context"
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)
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func usage() {
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fmt.Fprintf(os.Stderr, "Usage of %s:\n", os.Args[0])
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fmt.Fprintf(os.Stderr, " %s MOUNTPOINT\n", os.Args[0])
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flag.PrintDefaults()
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}
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func main() {
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flag.Usage = usage
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flag.Parse()
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if flag.NArg() != 1 {
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usage()
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os.Exit(2)
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}
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mountpoint := flag.Arg(0)
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c, err := fuse.Mount(
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mountpoint,
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fuse.FSName("helloworld"),
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fuse.Subtype("hellofs"),
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fuse.LocalVolume(),
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fuse.VolumeName("Hello world!"),
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)
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if err != nil {
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log.Fatal(err)
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}
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defer c.Close()
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err = fs.Serve(c, FS{})
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if err != nil {
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log.Fatal(err)
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}
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// check if the mount process has an error to report
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<-c.Ready
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if err := c.MountError; err != nil {
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log.Fatal(err)
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}
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}
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// FS implements the hello world file system.
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type FS struct{}
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func (FS) Root() (fs.Node, error) {
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return Dir{}, nil
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}
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// Dir implements both Node and Handle for the root directory.
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type Dir struct{}
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func (Dir) Attr(ctx context.Context, a *fuse.Attr) error {
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a.Inode = 1
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a.Mode = os.ModeDir | 0555
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return nil
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}
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func (Dir) Lookup(ctx context.Context, name string) (fs.Node, error) {
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if name == "hello" {
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return File{}, nil
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}
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return nil, fuse.ENOENT
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}
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var dirDirs = []fuse.Dirent{
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{Inode: 2, Name: "hello", Type: fuse.DT_File},
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}
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func (Dir) ReadDirAll(ctx context.Context) ([]fuse.Dirent, error) {
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return dirDirs, nil
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}
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// File implements both Node and Handle for the hello file.
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type File struct{}
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const greeting = "hello, world\n"
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func (File) Attr(ctx context.Context, a *fuse.Attr) error {
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a.Inode = 2
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a.Mode = 0444
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a.Size = uint64(len(greeting))
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return nil
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}
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func (File) ReadAll(ctx context.Context) ([]byte, error) {
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return []byte(greeting), nil
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}
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