Golang fuse.MountNodeFileSystem函數代碼示例

func setup(t *testing.T) (workdir string, cleanup func()) {
	wd, _ := ioutil.TempDir("", "")
	err := os.Mkdir(wd+"/mnt", 0700)
	fuse.CheckSuccess(err)

	err = os.Mkdir(wd+"/store", 0700)
	fuse.CheckSuccess(err)

	os.Mkdir(wd+"/ro", 0700)
	fuse.CheckSuccess(err)
	WriteFile(wd+"/ro/file1", "file1")
	WriteFile(wd+"/ro/file2", "file2")

	fs := NewAutoUnionFs(wd+"/store", testAOpts)

	nfs := fuse.NewPathNodeFs(fs, nil)
	state, conn, err := fuse.MountNodeFileSystem(wd+"/mnt", nfs, &testAOpts.FileSystemOptions)
	CheckSuccess(err)
	state.Debug = fuse.VerboseTest()
	conn.Debug = fuse.VerboseTest()
	go state.Loop()

	return wd, func() {
		state.Unmount()
		os.RemoveAll(wd)
	}
}

func setupFs(fs fuse.FileSystem) (string, func()) {
	opts := &fuse.FileSystemOptions{
		EntryTimeout:    0.0,
		AttrTimeout:     0.0,
		NegativeTimeout: 0.0,
	}
	mountPoint, _ := ioutil.TempDir("", "stat_test")
	nfs := fuse.NewPathNodeFs(fs, nil)
	state, _, err := fuse.MountNodeFileSystem(mountPoint, nfs, opts)
	if err != nil {
		panic(fmt.Sprintf("cannot mount %v", err)) // ugh - benchmark has no error methods.
	}
	state.SetRecordStatistics(true)
	// state.Debug = true
	go state.Loop()

	return mountPoint, func() {
		lc, lns := state.Latencies().Get("LOOKUP")
		gc, gns := state.Latencies().Get("GETATTR")
		fmt.Printf("GETATTR %dus/call n=%d, LOOKUP %dus/call n=%d\n",
			gns/int64(1000*lc), gc,
			lns/int64(1000*lc), lc)

		err := state.Unmount()
		if err != nil {
			log.Println("error during unmount", err)
		} else {
			os.RemoveAll(mountPoint)
		}
	}
}

func main() {
	// Scans the arg list and sets up flags
	debug := flag.Bool("debug", false, "print debugging messages.")
	latencies := flag.Bool("latencies", false, "record operation latencies.")

	flag.Parse()
	if flag.NArg() < 2 {
		fmt.Fprintf(os.Stderr, "usage: %s MOUNTPOINT ZIP-FILE\n", os.Args[0])
		os.Exit(2)
	}

	var fs fuse.NodeFileSystem
	fs, err := zipfs.NewArchiveFileSystem(flag.Arg(1))
	if err != nil {
		fmt.Fprintf(os.Stderr, "NewArchiveFileSystem failed: %v\n", err)
		os.Exit(1)
	}

	state, _, err := fuse.MountNodeFileSystem(flag.Arg(0), fs, nil)
	if err != nil {
		fmt.Printf("Mount fail: %v\n", err)
		os.Exit(1)
	}

	state.SetRecordStatistics(*latencies)
	state.Debug = *debug
	state.Loop()
}

func main() {
	version := flag.Bool("version", false, "print version number")
	debug := flag.Bool("debug", false, "debug on")
	hardlinks := flag.Bool("hardlinks", false, "support hardlinks")
	delcache_ttl := flag.Float64("deletion_cache_ttl", 5.0, "Deletion cache TTL in seconds.")
	branchcache_ttl := flag.Float64("branchcache_ttl", 5.0, "Branch cache TTL in seconds.")
	deldirname := flag.String(
		"deletion_dirname", "GOUNIONFS_DELETIONS", "Directory name to use for deletions.")
	flag.Parse()

	if *version {
		fmt.Println(fuse.Version())
		os.Exit(0)
	}

	if len(flag.Args()) < 2 {
		fmt.Println("Usage:\n  main MOUNTPOINT BASEDIR")
		os.Exit(2)
	}
	ufsOptions := unionfs.UnionFsOptions{
		DeletionCacheTTL: time.Duration(*delcache_ttl * float64(time.Second)),
		BranchCacheTTL:   time.Duration(*branchcache_ttl * float64(time.Second)),
		DeletionDirName:  *deldirname,
	}
	options := unionfs.AutoUnionFsOptions{
		UnionFsOptions: ufsOptions,
		FileSystemOptions: fuse.FileSystemOptions{
			EntryTimeout:    time.Second,
			AttrTimeout:     time.Second,
			NegativeTimeout: time.Second,
			Owner:           fuse.CurrentOwner(),
		},
		UpdateOnMount: true,
		PathNodeFsOptions: fuse.PathNodeFsOptions{
			ClientInodes: *hardlinks,
		},
	}

	fmt.Printf("AutoUnionFs - Go-FUSE Version %v.\n", fuse.Version())
	gofs := unionfs.NewAutoUnionFs(flag.Arg(1), options)
	pathfs := fuse.NewPathNodeFs(gofs, nil)
	state, conn, err := fuse.MountNodeFileSystem(flag.Arg(0), pathfs, nil)
	if err != nil {
		fmt.Printf("Mount fail: %v\n", err)
		os.Exit(1)
	}

	pathfs.Debug = *debug
	conn.Debug = *debug
	state.Debug = *debug

	gofs.SetMountState(state)

	state.Loop()
}

func newRpcFsTestCase(t *testing.T) (me *rpcFsTestCase) {
	me = &rpcFsTestCase{tester: t}
	me.tmp, _ = ioutil.TempDir("", "term-fss")

	me.mnt = me.tmp + "/mnt"
	me.orig = me.tmp + "/orig"
	srvCache := me.tmp + "/server-cache"

	os.Mkdir(me.mnt, 0700)
	os.Mkdir(me.orig, 0700)

	copts := cba.StoreOptions{
		Dir: srvCache,
	}
	me.serverStore = cba.NewStore(&copts)
	me.attr = attr.NewAttributeCache(
		func(n string) *attr.FileAttr { return me.getattr(n) },
		func(n string) *fuse.Attr {
			return StatForTest(t, filepath.Join(me.orig, n))
		})
	me.attr.Paranoia = true
	me.server = NewFsServer(me.attr, me.serverStore)

	var err error
	me.sockL, me.sockR, err = unixSocketpair()
	if err != nil {
		t.Fatal(err)
	}
	me.contentL, me.contentR, err = unixSocketpair()
	if err != nil {
		t.Fatal(err)
	}

	rpcServer := rpc.NewServer()
	rpcServer.Register(me.server)
	go rpcServer.ServeConn(me.sockL)
	go me.serverStore.ServeConn(me.contentL)
	rpcClient := rpc.NewClient(me.sockR)
	cOpts := cba.StoreOptions{
		Dir: me.tmp + "/client-cache",
	}
	me.clientStore = cba.NewStore(&cOpts)
	me.rpcFs = NewRpcFs(rpcClient, me.clientStore, me.contentR)
	me.rpcFs.id = "rpcfs_test"
	nfs := fuse.NewPathNodeFs(me.rpcFs, nil)
	me.state, _, err = fuse.MountNodeFileSystem(me.mnt, nfs, nil)
	me.state.Debug = fuse.VerboseTest()
	if err != nil {
		t.Fatal("Mount", err)
	}

	go me.state.Loop()
	return me
}

func main() {
	flag.Parse()
	if len(flag.Args()) < 1 {
		log.Fatal("Usage:\n  hello MOUNTPOINT")
	}
	nfs := fuse.NewPathNodeFs(&HelloFs{}, nil)
	state, _, err := fuse.MountNodeFileSystem(flag.Arg(0), nfs, nil)
	if err != nil {
		log.Fatal("Mount fail: %v\n", err)
	}
	state.Loop()
}

// Creates 3 directories on a temporary dir: /mnt with the overlayed
// (unionfs) mount, rw with modifiable data, and ro on the bottom.
func setupUfs(t *testing.T) (workdir string, cleanup func()) {
	// Make sure system setting does not affect test.
	syscall.Umask(0)

	wd, _ := ioutil.TempDir("", "unionfs")
	err := os.Mkdir(wd+"/mnt", 0700)
	if err != nil {
		t.Fatalf("Mkdir failed: %v", err)
	}

	err = os.Mkdir(wd+"/rw", 0700)
	if err != nil {
		t.Fatalf("Mkdir failed: %v", err)
	}

	os.Mkdir(wd+"/ro", 0700)
	if err != nil {
		t.Fatalf("Mkdir failed: %v", err)
	}

	var fses []fuse.FileSystem
	fses = append(fses, fuse.NewLoopbackFileSystem(wd+"/rw"))
	fses = append(fses,
		NewCachingFileSystem(fuse.NewLoopbackFileSystem(wd+"/ro"), 0))
	ufs := NewUnionFs(fses, testOpts)

	// We configure timeouts are smaller, so we can check for
	// UnionFs's cache consistency.
	opts := &fuse.FileSystemOptions{
		EntryTimeout:    entryTtl / 2,
		AttrTimeout:     entryTtl / 2,
		NegativeTimeout: entryTtl / 2,
	}

	pathfs := fuse.NewPathNodeFs(ufs,
		&fuse.PathNodeFsOptions{ClientInodes: true})
	state, conn, err := fuse.MountNodeFileSystem(wd+"/mnt", pathfs, opts)
	if err != nil {
		t.Fatalf("MountNodeFileSystem failed: %v", err)
	}
	conn.Debug = fuse.VerboseTest()
	state.Debug = fuse.VerboseTest()
	go state.Loop()

	return wd, func() {
		err := state.Unmount()
		if err != nil {
			return
		}
		setRecursiveWritable(t, wd, true)
		os.RemoveAll(wd)
	}
}

func setupZipfs() (mountPoint string, cleanup func()) {
	zfs, err := NewArchiveFileSystem(testZipFile())
	CheckSuccess(err)

	mountPoint, _ = ioutil.TempDir("", "")
	state, _, err := fuse.MountNodeFileSystem(mountPoint, zfs, nil)

	state.Debug = true
	go state.Loop()

	return mountPoint, func() {
		state.Unmount()
		os.RemoveAll(mountPoint)
	}
}

func setupDevNullFs() (wd string, clean func()) {
	fs := NewDevNullFs()
	mountPoint, _ := ioutil.TempDir("", "termite")
	state, _, err := fuse.MountNodeFileSystem(mountPoint, fs, nil)
	if err != nil {
		panic(err)
	}

	state.Debug = fuse.VerboseTest()
	go state.Loop()
	return mountPoint, func() {
		state.Unmount()
		os.RemoveAll(mountPoint)
	}
}

func main() {
	version := flag.Bool("version", false, "print version number")
	debug := flag.Bool("debug", false, "debug on")
	threaded := flag.Bool("threaded", true, "threading on")
	delcache_ttl := flag.Float64("deletion_cache_ttl", 5.0, "Deletion cache TTL in seconds.")
	branchcache_ttl := flag.Float64("branchcache_ttl", 5.0, "Branch cache TTL in seconds.")
	deldirname := flag.String(
		"deletion_dirname", "GOUNIONFS_DELETIONS", "Directory name to use for deletions.")
	flag.Parse()

	if *version {
		fmt.Println(fuse.Version())
		os.Exit(0)
	}

	if len(flag.Args()) < 2 {
		fmt.Println("Usage:\n  main MOUNTPOINT BASEDIR")
		os.Exit(2)
	}
	ufsOptions := unionfs.UnionFsOptions{
		DeletionCacheTTLSecs: *delcache_ttl,
		BranchCacheTTLSecs:   *branchcache_ttl,
		DeletionDirName:      *deldirname,
	}
	options := unionfs.AutoUnionFsOptions{
		UnionFsOptions: ufsOptions,
		FileSystemOptions: fuse.FileSystemOptions{
			EntryTimeout:    1.0,
			AttrTimeout:     1.0,
			NegativeTimeout: 1.0,
			Owner:           fuse.CurrentOwner(),
		},
		UpdateOnMount: true,
	}

	gofs := unionfs.NewAutoUnionFs(flag.Arg(1), options)
	pathfs := fuse.NewPathNodeFs(gofs)
	state, conn, err := fuse.MountNodeFileSystem(flag.Arg(0), pathfs, nil)
	if err != nil {
		fmt.Printf("Mount fail: %v\n", err)
		os.Exit(1)
	}

	pathfs.Debug = *debug
	conn.Debug = *debug
	state.Debug = *debug
	state.Loop(*threaded)
}

func setupZipfs(t *testing.T) (mountPoint string, cleanup func()) {
	zfs, err := NewArchiveFileSystem(testZipFile())
	if err != nil {
		t.Fatalf("NewArchiveFileSystem failed: %v", err)
	}

	mountPoint, _ = ioutil.TempDir("", "")
	state, _, err := fuse.MountNodeFileSystem(mountPoint, zfs, nil)

	state.Debug = fuse.VerboseTest()
	go state.Loop()

	return mountPoint, func() {
		state.Unmount()
		os.RemoveAll(mountPoint)
	}
}

func setupMzfs() (mountPoint string, cleanup func()) {
	fs := NewMultiZipFs()
	mountPoint, _ = ioutil.TempDir("", "")
	nfs := fuse.NewPathNodeFs(fs, nil)
	state, _, err := fuse.MountNodeFileSystem(mountPoint, nfs, &fuse.FileSystemOptions{
		EntryTimeout:    testTtl,
		AttrTimeout:     testTtl,
		NegativeTimeout: 0.0,
	})
	CheckSuccess(err)
	state.Debug = fuse.VerboseTest()
	go state.Loop()

	return mountPoint, func() {
		state.Unmount()
		os.RemoveAll(mountPoint)
	}
}

func main() {
	debug := flag.Bool("debug", false, "debug on")
	portable := flag.Bool("portable", false, "use 32 bit inodes")

	entry_ttl := flag.Float64("entry_ttl", 1.0, "fuse entry cache TTL.")
	negative_ttl := flag.Float64("negative_ttl", 1.0, "fuse negative entry cache TTL.")

	delcache_ttl := flag.Float64("deletion_cache_ttl", 5.0, "Deletion cache TTL in seconds.")
	branchcache_ttl := flag.Float64("branchcache_ttl", 5.0, "Branch cache TTL in seconds.")
	deldirname := flag.String(
		"deletion_dirname", "GOUNIONFS_DELETIONS", "Directory name to use for deletions.")

	flag.Parse()
	if len(flag.Args()) < 2 {
		fmt.Println("Usage:\n  unionfs MOUNTPOINT RW-DIRECTORY RO-DIRECTORY ...")
		os.Exit(2)
	}

	ufsOptions := unionfs.UnionFsOptions{
		DeletionCacheTTL: time.Duration(*delcache_ttl * float64(time.Second)),
		BranchCacheTTL:   time.Duration(*branchcache_ttl * float64(time.Second)),
		DeletionDirName:  *deldirname,
	}

	ufs, err := unionfs.NewUnionFsFromRoots(flag.Args()[1:], &ufsOptions, true)
	if err != nil {
		log.Fatal("Cannot create UnionFs", err)
		os.Exit(1)
	}
	nodeFs := fuse.NewPathNodeFs(ufs, &fuse.PathNodeFsOptions{ClientInodes: true})
	mOpts := fuse.FileSystemOptions{
		EntryTimeout:    time.Duration(*entry_ttl * float64(time.Second)),
		AttrTimeout:     time.Duration(*entry_ttl * float64(time.Second)),
		NegativeTimeout: time.Duration(*negative_ttl * float64(time.Second)),
		PortableInodes:  *portable,
	}
	mountState, _, err := fuse.MountNodeFileSystem(flag.Arg(0), nodeFs, &mOpts)
	if err != nil {
		log.Fatal("Mount fail:", err)
	}

	mountState.Debug = *debug
	mountState.Loop()
}

func setupFs(fs fuse.FileSystem, opts *fuse.FileSystemOptions) (string, func()) {
	mountPoint, _ := ioutil.TempDir("", "stat_test")
	nfs := fuse.NewPathNodeFs(fs, nil)
	state, _, err := fuse.MountNodeFileSystem(mountPoint, nfs, opts)
	if err != nil {
		panic(fmt.Sprintf("cannot mount %v", err)) // ugh - benchmark has no error methods.
	}
	// state.Debug = true
	go state.Loop()

	return mountPoint, func() {
		err := state.Unmount()
		if err != nil {
			log.Println("error during unmount", err)
		} else {
			os.RemoveAll(mountPoint)
		}
	}
}

func setupUfs(t *testing.T) (workdir string, cleanup func()) {
	// Make sure system setting does not affect test.
	syscall.Umask(0)

	wd, _ := ioutil.TempDir("", "")
	err := os.Mkdir(wd+"/mnt", 0700)
	fuse.CheckSuccess(err)

	err = os.Mkdir(wd+"/rw", 0700)
	fuse.CheckSuccess(err)

	os.Mkdir(wd+"/ro", 0700)
	fuse.CheckSuccess(err)

	var fses []fuse.FileSystem
	fses = append(fses, fuse.NewLoopbackFileSystem(wd+"/rw"))
	fses = append(fses,
		NewCachingFileSystem(fuse.NewLoopbackFileSystem(wd+"/ro"), 0))
	ufs := NewUnionFs(fses, testOpts)

	// We configure timeouts are smaller, so we can check for
	// UnionFs's cache consistency.
	opts := &fuse.FileSystemOptions{
		EntryTimeout:    .5 * entryTtl,
		AttrTimeout:     .5 * entryTtl,
		NegativeTimeout: .5 * entryTtl,
	}

	pathfs := fuse.NewPathNodeFs(ufs,
		&fuse.PathNodeFsOptions{ClientInodes: true})
	state, conn, err := fuse.MountNodeFileSystem(wd+"/mnt", pathfs, opts)
	CheckSuccess(err)
	conn.Debug = fuse.VerboseTest()
	state.Debug = fuse.VerboseTest()
	go state.Loop()

	return wd, func() {
		state.Unmount()
		os.RemoveAll(wd)
	}
}