func main() {
// Scans the arg list and sets up flags
debug := flag.Bool("debug", false, "print debugging messages.")
flag.Parse()
if flag.NArg() < 2 {
// TODO - where to get program name?
fmt.Println("usage: main MOUNTPOINT BACKING-PREFIX")
os.Exit(2)
}
mountPoint := flag.Arg(0)
prefix := flag.Arg(1)
root := nodefs.NewMemNodeFSRoot(prefix)
conn := nodefs.NewFileSystemConnector(root, nil)
server, err := fuse.NewServer(conn.RawFS(), mountPoint, nil)
if err != nil {
fmt.Printf("Mount fail: %v\n", err)
os.Exit(1)
}
server.SetDebug(*debug)
fmt.Println("Mounted!")
server.Serve()
}
func TestDeleteNotify(t *testing.T) {
dir := testutil.TempDir()
defer os.RemoveAll(dir)
root := nodefs.NewMemNodeFSRoot(dir + "/backing")
conn := nodefs.NewFileSystemConnector(root,
&nodefs.Options{PortableInodes: true})
mnt := dir + "/mnt"
err := os.Mkdir(mnt, 0755)
if err != nil {
t.Fatal(err)
}
state, err := fuse.NewServer(conn.RawFS(), mnt, &fuse.MountOptions{
Debug: testutil.VerboseTest(),
})
if err != nil {
t.Fatal(err)
}
go state.Serve()
defer state.Unmount()
if err := state.WaitMount(); err != nil {
t.Fatal("WaitMount", err)
}
_, code := root.Mkdir("testdir", 0755, nil)
if !code.Ok() {
t.Fatal(code)
}
ch := root.Inode().RmChild("testdir")
ch.Node().SetInode(nil)
flip := flipNode{
Node: ch.Node(),
ok: make(chan int),
}
root.Inode().NewChild("testdir", true, &flip)
err = ioutil.WriteFile(mnt+"/testdir/testfile", []byte{42}, 0644)
if err != nil {
t.Fatal(err)
}
// Do the test here, so we surely have state.KernelSettings()
if state.KernelSettings().Minor < 18 {
t.Log("Kernel does not support deletion notify; aborting test.")
return
}
buf := bytes.Buffer{}
cmd := exec.Command("/usr/bin/tail", "-f", "testfile")
cmd.Dir = mnt + "/testdir"
cmd.Stdin = &buf
cmd.Stdout = &bytes.Buffer{}
cmd.Stderr = os.Stderr
err = cmd.Start()
if err != nil {
t.Fatal(err)
}
defer func() {
cmd.Process.Kill()
time.Sleep(100 * time.Millisecond)
}()
// Wait until tail opened the file.
time.Sleep(100 * time.Millisecond)
err = os.Remove(mnt + "/testdir/testfile")
if err != nil {
t.Fatal(err)
}
// Simulate deletion+mkdir coming from the network
close(flip.ok)
oldCh := root.Inode().RmChild("testdir")
_, code = root.Inode().Node().Mkdir("testdir", 0755, nil)
if !code.Ok() {
t.Fatal("mkdir status", code)
}
conn.DeleteNotify(root.Inode(), oldCh, "testdir")
_, err = os.Lstat(mnt + "/testdir")
if err != nil {
t.Fatalf("lstat after del + mkdir failed: %v", err)
}
}