Vendor dependencies with dep

vendor/bazil.org/fuse/fs/bench/bench_create_test.go

@@ -0,0 +1,54 @@
+package bench_test
+
+import (
+	"fmt"
+	"os"
+	"testing"
+
+	"bazil.org/fuse"
+	"bazil.org/fuse/fs"
+	"bazil.org/fuse/fs/fstestutil"
+	"golang.org/x/net/context"
+)
+
+type dummyFile struct {
+	fstestutil.File
+}
+
+type benchCreateDir struct {
+	fstestutil.Dir
+}
+
+var _ fs.NodeCreater = (*benchCreateDir)(nil)
+
+func (f *benchCreateDir) Create(ctx context.Context, req *fuse.CreateRequest, resp *fuse.CreateResponse) (fs.Node, fs.Handle, error) {
+	child := &dummyFile{}
+	return child, child, nil
+}
+
+func BenchmarkCreate(b *testing.B) {
+	f := &benchCreateDir{}
+	mnt, err := fstestutil.MountedT(b, fstestutil.SimpleFS{f}, nil)
+	if err != nil {
+		b.Fatal(err)
+	}
+	defer mnt.Close()
+
+	// prepare file names to decrease test overhead
+	names := make([]string, 0, b.N)
+	for i := 0; i < b.N; i++ {
+		// zero-padded so cost stays the same on every iteration
+		names = append(names, mnt.Dir+"/"+fmt.Sprintf("%08x", i))
+	}
+	b.ResetTimer()
+
+	for i := 0; i < b.N; i++ {
+		f, err := os.Create(names[i])
+		if err != nil {
+			b.Fatalf("WriteFile: %v", err)
+		}
+		f.Close()
+	}
+
+	b.StopTimer()
+}

vendor/bazil.org/fuse/fs/bench/bench_lookup_test.go

@@ -0,0 +1,42 @@
+package bench_test
+
+import (
+	"os"
+	"testing"
+
+	"golang.org/x/net/context"
+
+	"bazil.org/fuse"
+	"bazil.org/fuse/fs"
+	"bazil.org/fuse/fs/fstestutil"
+)
+
+type benchLookupDir struct {
+	fstestutil.Dir
+}
+
+var _ fs.NodeRequestLookuper = (*benchLookupDir)(nil)
+
+func (f *benchLookupDir) Lookup(ctx context.Context, req *fuse.LookupRequest, resp *fuse.LookupResponse) (fs.Node, error) {
+	return nil, fuse.ENOENT
+}
+
+func BenchmarkLookup(b *testing.B) {
+	f := &benchLookupDir{}
+	mnt, err := fstestutil.MountedT(b, fstestutil.SimpleFS{f}, nil)
+	if err != nil {
+		b.Fatal(err)
+	}
+	defer mnt.Close()
+
+	name := mnt.Dir + "/does-not-exist"
+	b.ResetTimer()
+
+	for i := 0; i < b.N; i++ {
+		if _, err := os.Stat(name); !os.IsNotExist(err) {
+			b.Fatalf("Stat: wrong error: %v", err)
+		}
+	}
+
+	b.StopTimer()
+}

vendor/bazil.org/fuse/fs/bench/bench_readwrite_test.go

@@ -0,0 +1,268 @@
+package bench_test
+
+import (
+	"io"
+	"io/ioutil"
+	"os"
+	"path"
+	"testing"
+
+	"bazil.org/fuse"
+	"bazil.org/fuse/fs"
+	"bazil.org/fuse/fs/fstestutil"
+	"golang.org/x/net/context"
+)
+
+type benchConfig struct {
+	directIO bool
+}
+
+type benchFS struct {
+	conf *benchConfig
+}
+
+var _ = fs.FS(benchFS{})
+
+func (f benchFS) Root() (fs.Node, error) {
+	return benchDir{conf: f.conf}, nil
+}
+
+type benchDir struct {
+	conf *benchConfig
+}
+
+var _ = fs.Node(benchDir{})
+var _ = fs.NodeStringLookuper(benchDir{})
+var _ = fs.Handle(benchDir{})
+var _ = fs.HandleReadDirAller(benchDir{})
+
+func (benchDir) Attr(ctx context.Context, a *fuse.Attr) error {
+	a.Inode = 1
+	a.Mode = os.ModeDir | 0555
+	return nil
+}
+
+func (d benchDir) Lookup(ctx context.Context, name string) (fs.Node, error) {
+	if name == "bench" {
+		return benchFile{conf: d.conf}, nil
+	}
+	return nil, fuse.ENOENT
+}
+
+func (benchDir) ReadDirAll(ctx context.Context) ([]fuse.Dirent, error) {
+	l := []fuse.Dirent{
+		{Inode: 2, Name: "bench", Type: fuse.DT_File},
+	}
+	return l, nil
+}
+
+type benchFile struct {
+	conf *benchConfig
+}
+
+var _ = fs.Node(benchFile{})
+var _ = fs.NodeOpener(benchFile{})
+var _ = fs.NodeFsyncer(benchFile{})
+var _ = fs.Handle(benchFile{})
+var _ = fs.HandleReader(benchFile{})
+var _ = fs.HandleWriter(benchFile{})
+
+func (benchFile) Attr(ctx context.Context, a *fuse.Attr) error {
+	a.Inode = 2
+	a.Mode = 0644
+	a.Size = 9999999999999999
+	return nil
+}
+
+func (f benchFile) Open(ctx context.Context, req *fuse.OpenRequest, resp *fuse.OpenResponse) (fs.Handle, error) {
+	if f.conf.directIO {
+		resp.Flags |= fuse.OpenDirectIO
+	}
+	// TODO configurable?
+	resp.Flags |= fuse.OpenKeepCache
+	return f, nil
+}
+
+func (benchFile) Read(ctx context.Context, req *fuse.ReadRequest, resp *fuse.ReadResponse) error {
+	resp.Data = resp.Data[:cap(resp.Data)]
+	return nil
+}
+
+func (benchFile) Write(ctx context.Context, req *fuse.WriteRequest, resp *fuse.WriteResponse) error {
+	resp.Size = len(req.Data)
+	return nil
+}
+
+func (benchFile) Fsync(ctx context.Context, req *fuse.FsyncRequest) error {
+	return nil
+}
+
+func benchmark(b *testing.B, fn func(b *testing.B, mnt string), conf *benchConfig) {
+	filesys := benchFS{
+		conf: conf,
+	}
+	mnt, err := fstestutil.Mounted(filesys, nil,
+		fuse.MaxReadahead(64*1024*1024),
+		fuse.AsyncRead(),
+		fuse.WritebackCache(),
+	)
+	if err != nil {
+		b.Fatal(err)
+	}
+	defer mnt.Close()
+
+	fn(b, mnt.Dir)
+}
+
+type zero struct{}
+
+func (zero) Read(p []byte) (n int, err error) {
+	return len(p), nil
+}
+
+var Zero io.Reader = zero{}
+
+func doWrites(size int64) func(b *testing.B, mnt string) {
+	return func(b *testing.B, mnt string) {
+		p := path.Join(mnt, "bench")
+
+		f, err := os.Create(p)
+		if err != nil {
+			b.Fatalf("create: %v", err)
+		}
+		defer f.Close()
+
+		b.ResetTimer()
+		b.SetBytes(size)
+
+		for i := 0; i < b.N; i++ {
+			_, err = io.CopyN(f, Zero, size)
+			if err != nil {
+				b.Fatalf("write: %v", err)
+			}
+		}
+	}
+}
+
+func BenchmarkWrite100(b *testing.B) {
+	benchmark(b, doWrites(100), &benchConfig{})
+}
+
+func BenchmarkWrite10MB(b *testing.B) {
+	benchmark(b, doWrites(10*1024*1024), &benchConfig{})
+}
+
+func BenchmarkWrite100MB(b *testing.B) {
+	benchmark(b, doWrites(100*1024*1024), &benchConfig{})
+}
+
+func BenchmarkDirectWrite100(b *testing.B) {
+	benchmark(b, doWrites(100), &benchConfig{
+		directIO: true,
+	})
+}
+
+func BenchmarkDirectWrite10MB(b *testing.B) {
+	benchmark(b, doWrites(10*1024*1024), &benchConfig{
+		directIO: true,
+	})
+}
+
+func BenchmarkDirectWrite100MB(b *testing.B) {
+	benchmark(b, doWrites(100*1024*1024), &benchConfig{
+		directIO: true,
+	})
+}
+
+func doWritesSync(size int64) func(b *testing.B, mnt string) {
+	return func(b *testing.B, mnt string) {
+		p := path.Join(mnt, "bench")
+
+		f, err := os.Create(p)
+		if err != nil {
+			b.Fatalf("create: %v", err)
+		}
+		defer f.Close()
+
+		b.ResetTimer()
+		b.SetBytes(size)
+
+		for i := 0; i < b.N; i++ {
+			_, err = io.CopyN(f, Zero, size)
+			if err != nil {
+				b.Fatalf("write: %v", err)
+			}
+
+			if err := f.Sync(); err != nil {
+				b.Fatalf("sync: %v", err)
+			}
+		}
+	}
+}
+
+func BenchmarkWriteSync100(b *testing.B) {
+	benchmark(b, doWritesSync(100), &benchConfig{})
+}
+
+func BenchmarkWriteSync10MB(b *testing.B) {
+	benchmark(b, doWritesSync(10*1024*1024), &benchConfig{})
+}
+
+func BenchmarkWriteSync100MB(b *testing.B) {
+	benchmark(b, doWritesSync(100*1024*1024), &benchConfig{})
+}
+
+func doReads(size int64) func(b *testing.B, mnt string) {
+	return func(b *testing.B, mnt string) {
+		p := path.Join(mnt, "bench")
+
+		f, err := os.Open(p)
+		if err != nil {
+			b.Fatalf("close: %v", err)
+		}
+		defer f.Close()
+
+		b.ResetTimer()
+		b.SetBytes(size)
+
+		for i := 0; i < b.N; i++ {
+			n, err := io.CopyN(ioutil.Discard, f, size)
+			if err != nil {
+				b.Fatalf("read: %v", err)
+			}
+			if n != size {
+				b.Errorf("unexpected size: %d != %d", n, size)
+			}
+		}
+	}
+}
+
+func BenchmarkRead100(b *testing.B) {
+	benchmark(b, doReads(100), &benchConfig{})
+}
+
+func BenchmarkRead10MB(b *testing.B) {
+	benchmark(b, doReads(10*1024*1024), &benchConfig{})
+}
+
+func BenchmarkRead100MB(b *testing.B) {
+	benchmark(b, doReads(100*1024*1024), &benchConfig{})
+}
+
+func BenchmarkDirectRead100(b *testing.B) {
+	benchmark(b, doReads(100), &benchConfig{
+		directIO: true,
+	})
+}
+
+func BenchmarkDirectRead10MB(b *testing.B) {
+	benchmark(b, doReads(10*1024*1024), &benchConfig{
+		directIO: true,
+	})
+}
+
+func BenchmarkDirectRead100MB(b *testing.B) {
+	benchmark(b, doReads(100*1024*1024), &benchConfig{
+		directIO: true,
+	})
+}

vendor/bazil.org/fuse/fs/bench/doc.go

@@ -0,0 +1,5 @@
+// Package bench contains benchmarks.
+//
+// It is kept in a separate package to avoid conflicting with the
+// debug-heavy defaults for the actual tests.
+package bench

vendor/bazil.org/fuse/fs/fstestutil/checkdir.go

@@ -0,0 +1,70 @@
+package fstestutil
+
+import (
+	"fmt"
+	"io/ioutil"
+	"os"
+)
+
+// FileInfoCheck is a function that validates an os.FileInfo according
+// to some criteria.
+type FileInfoCheck func(fi os.FileInfo) error
+
+type checkDirError struct {
+	missing map[string]struct{}
+	extra   map[string]os.FileMode
+}
+
+func (e *checkDirError) Error() string {
+	return fmt.Sprintf("wrong directory contents: missing %v, extra %v", e.missing, e.extra)
+}
+
+// CheckDir checks the contents of the directory at path, making sure
+// every directory entry listed in want is present. If the check is
+// not nil, it must also pass.
+//
+// If want contains the impossible filename "", unexpected files are
+// checked with that. If the key is not in want, unexpected files are
+// an error.
+//
+// Missing entries, that are listed in want but not seen, are an
+// error.
+func CheckDir(path string, want map[string]FileInfoCheck) error {
+	problems := &checkDirError{
+		missing: make(map[string]struct{}, len(want)),
+		extra:   make(map[string]os.FileMode),
+	}
+	for k := range want {
+		if k == "" {
+			continue
+		}
+		problems.missing[k] = struct{}{}
+	}
+
+	fis, err := ioutil.ReadDir(path)
+	if err != nil {
+		return fmt.Errorf("cannot read directory: %v", err)
+	}
+
+	for _, fi := range fis {
+		check, ok := want[fi.Name()]
+		if !ok {
+			check, ok = want[""]
+		}
+		if !ok {
+			problems.extra[fi.Name()] = fi.Mode()
+			continue
+		}
+		delete(problems.missing, fi.Name())
+		if check != nil {
+			if err := check(fi); err != nil {
+				return fmt.Errorf("check failed: %v: %v", fi.Name(), err)
+			}
+		}
+	}
+
+	if len(problems.missing) > 0 || len(problems.extra) > 0 {
+		return problems
+	}
+	return nil
+}

vendor/bazil.org/fuse/fs/fstestutil/debug.go

@@ -0,0 +1,65 @@
+package fstestutil
+
+import (
+	"flag"
+	"log"
+	"strconv"
+
+	"bazil.org/fuse"
+)
+
+type flagDebug bool
+
+var debug flagDebug
+
+var _ = flag.Value(&debug)
+
+func (f *flagDebug) IsBoolFlag() bool {
+	return true
+}
+
+func nop(msg interface{}) {}
+
+func (f *flagDebug) Set(s string) error {
+	v, err := strconv.ParseBool(s)
+	if err != nil {
+		return err
+	}
+	*f = flagDebug(v)
+	if v {
+		fuse.Debug = logMsg
+	} else {
+		fuse.Debug = nop
+	}
+	return nil
+}
+
+func (f *flagDebug) String() string {
+	return strconv.FormatBool(bool(*f))
+}
+
+func logMsg(msg interface{}) {
+	log.Printf("FUSE: %s\n", msg)
+}
+
+func init() {
+	flag.Var(&debug, "fuse.debug", "log FUSE processing details")
+}
+
+// DebugByDefault changes the default of the `-fuse.debug` flag to
+// true.
+//
+// This package registers a command line flag `-fuse.debug` and when
+// run with that flag (and activated inside the tests), logs FUSE
+// debug messages.
+//
+// This is disabled by default, as most callers probably won't care
+// about FUSE details. Use DebugByDefault for tests where you'd
+// normally be passing `-fuse.debug` all the time anyway.
+//
+// Call from an init function.
+func DebugByDefault() {
+	f := flag.Lookup("fuse.debug")
+	f.DefValue = "true"
+	f.Value.Set(f.DefValue)
+}

vendor/bazil.org/fuse/fs/fstestutil/doc.go

@@ -0,0 +1 @@
+package fstestutil // import "bazil.org/fuse/fs/fstestutil"

vendor/bazil.org/fuse/fs/fstestutil/mounted.go

@@ -0,0 +1,141 @@
+package fstestutil
+
+import (
+	"errors"
+	"io/ioutil"
+	"log"
+	"os"
+	"testing"
+	"time"
+
+	"bazil.org/fuse"
+	"bazil.org/fuse/fs"
+)
+
+// Mount contains information about the mount for the test to use.
+type Mount struct {
+	// Dir is the temporary directory where the filesystem is mounted.
+	Dir string
+
+	Conn   *fuse.Conn
+	Server *fs.Server
+
+	// Error will receive the return value of Serve.
+	Error <-chan error
+
+	done   <-chan struct{}
+	closed bool
+}
+
+// Close unmounts the filesystem and waits for fs.Serve to return. Any
+// returned error will be stored in Err. It is safe to call Close
+// multiple times.
+func (mnt *Mount) Close() {
+	if mnt.closed {
+		return
+	}
+	mnt.closed = true
+	for tries := 0; tries < 1000; tries++ {
+		err := fuse.Unmount(mnt.Dir)
+		if err != nil {
+			// TODO do more than log?
+			log.Printf("unmount error: %v", err)
+			time.Sleep(10 * time.Millisecond)
+			continue
+		}
+		break
+	}
+	<-mnt.done
+	mnt.Conn.Close()
+	os.Remove(mnt.Dir)
+}
+
+// MountedFunc mounts a filesystem at a temporary directory. The
+// filesystem used is constructed by calling a function, to allow
+// storing fuse.Conn and fs.Server in the FS.
+//
+// It also waits until the filesystem is known to be visible (OS X
+// workaround).
+//
+// After successful return, caller must clean up by calling Close.
+func MountedFunc(fn func(*Mount) fs.FS, conf *fs.Config, options ...fuse.MountOption) (*Mount, error) {
+	dir, err := ioutil.TempDir("", "fusetest")
+	if err != nil {
+		return nil, err
+	}
+	c, err := fuse.Mount(dir, options...)
+	if err != nil {
+		return nil, err
+	}
+	server := fs.New(c, conf)
+	done := make(chan struct{})
+	serveErr := make(chan error, 1)
+	mnt := &Mount{
+		Dir:    dir,
+		Conn:   c,
+		Server: server,
+		Error:  serveErr,
+		done:   done,
+	}
+	filesys := fn(mnt)
+	go func() {
+		defer close(done)
+		serveErr <- server.Serve(filesys)
+	}()
+
+	select {
+	case <-mnt.Conn.Ready:
+		if err := mnt.Conn.MountError; err != nil {
+			return nil, err
+		}
+		return mnt, nil
+	case err = <-mnt.Error:
+		// Serve quit early
+		if err != nil {
+			return nil, err
+		}
+		return nil, errors.New("Serve exited early")
+	}
+}
+
+// Mounted mounts the fuse.Server at a temporary directory.
+//
+// It also waits until the filesystem is known to be visible (OS X
+// workaround).
+//
+// After successful return, caller must clean up by calling Close.
+func Mounted(filesys fs.FS, conf *fs.Config, options ...fuse.MountOption) (*Mount, error) {
+	fn := func(*Mount) fs.FS { return filesys }
+	return MountedFunc(fn, conf, options...)
+}
+
+// MountedFuncT mounts a filesystem at a temporary directory,
+// directing it's debug log to the testing logger.
+//
+// See MountedFunc for usage.
+//
+// The debug log is not enabled by default. Use `-fuse.debug` or call
+// DebugByDefault to enable.
+func MountedFuncT(t testing.TB, fn func(*Mount) fs.FS, conf *fs.Config, options ...fuse.MountOption) (*Mount, error) {
+	if conf == nil {
+		conf = &fs.Config{}
+	}
+	if debug && conf.Debug == nil {
+		conf.Debug = func(msg interface{}) {
+			t.Logf("FUSE: %s", msg)
+		}
+	}
+	return MountedFunc(fn, conf, options...)
+}
+
+// MountedT mounts the filesystem at a temporary directory,
+// directing it's debug log to the testing logger.
+//
+// See Mounted for usage.
+//
+// The debug log is not enabled by default. Use `-fuse.debug` or call
+// DebugByDefault to enable.
+func MountedT(t testing.TB, filesys fs.FS, conf *fs.Config, options ...fuse.MountOption) (*Mount, error) {
+	fn := func(*Mount) fs.FS { return filesys }
+	return MountedFuncT(t, fn, conf, options...)
+}

vendor/bazil.org/fuse/fs/fstestutil/mountinfo.go

@@ -0,0 +1,26 @@
+package fstestutil
+
+// MountInfo describes a mounted file system.
+type MountInfo struct {
+	FSName string
+	Type   string
+}
+
+// GetMountInfo finds information about the mount at mnt. It is
+// intended for use by tests only, and only fetches information
+// relevant to the current tests.
+func GetMountInfo(mnt string) (*MountInfo, error) {
+	return getMountInfo(mnt)
+}
+
+// cstr converts a nil-terminated C string into a Go string
+func cstr(ca []int8) string {
+	s := make([]byte, 0, len(ca))
+	for _, c := range ca {
+		if c == 0x00 {
+			break
+		}
+		s = append(s, byte(c))
+	}
+	return string(s)
+}

vendor/bazil.org/fuse/fs/fstestutil/mountinfo_darwin.go

@@ -0,0 +1,29 @@
+package fstestutil
+
+import (
+	"regexp"
+	"syscall"
+)
+
+var re = regexp.MustCompile(`\\(.)`)
+
+// unescape removes backslash-escaping. The escaped characters are not
+// mapped in any way; that is, unescape(`\n` ) == `n`.
+func unescape(s string) string {
+	return re.ReplaceAllString(s, `$1`)
+}
+
+func getMountInfo(mnt string) (*MountInfo, error) {
+	var st syscall.Statfs_t
+	err := syscall.Statfs(mnt, &st)
+	if err != nil {
+		return nil, err
+	}
+	i := &MountInfo{
+		// osx getmntent(3) fails to un-escape the data, so we do it..
+		// this might lead to double-unescaping in the future. fun.
+		// TestMountOptionFSNameEvilBackslashDouble checks for that.
+		FSName: unescape(cstr(st.Mntfromname[:])),
+	}
+	return i, nil
+}

vendor/bazil.org/fuse/fs/fstestutil/mountinfo_freebsd.go

@@ -0,0 +1,7 @@
+package fstestutil
+
+import "errors"
+
+func getMountInfo(mnt string) (*MountInfo, error) {
+	return nil, errors.New("FreeBSD has no useful mount information")
+}

vendor/bazil.org/fuse/fs/fstestutil/mountinfo_linux.go

@@ -0,0 +1,51 @@
+package fstestutil
+
+import (
+	"errors"
+	"io/ioutil"
+	"strings"
+)
+
+// Linux /proc/mounts shows current mounts.
+// Same format as /etc/fstab. Quoting getmntent(3):
+//
+// Since fields in the mtab and fstab files are separated by whitespace,
+// octal escapes are used to represent the four characters space (\040),
+// tab (\011), newline (\012) and backslash (\134) in those files when
+// they occur in one of the four strings in a mntent structure.
+//
+// http://linux.die.net/man/3/getmntent
+
+var fstabUnescape = strings.NewReplacer(
+	`\040`, "\040",
+	`\011`, "\011",
+	`\012`, "\012",
+	`\134`, "\134",
+)
+
+var errNotFound = errors.New("mount not found")
+
+func getMountInfo(mnt string) (*MountInfo, error) {
+	data, err := ioutil.ReadFile("/proc/mounts")
+	if err != nil {
+		return nil, err
+	}
+	for _, line := range strings.Split(string(data), "\n") {
+		fields := strings.Fields(line)
+		if len(fields) < 3 {
+			continue
+		}
+		// Fields are: fsname dir type opts freq passno
+		fsname := fstabUnescape.Replace(fields[0])
+		dir := fstabUnescape.Replace(fields[1])
+		fstype := fstabUnescape.Replace(fields[2])
+		if mnt == dir {
+			info := &MountInfo{
+				FSName: fsname,
+				Type:   fstype,
+			}
+			return info, nil
+		}
+	}
+	return nil, errNotFound
+}

vendor/bazil.org/fuse/fs/fstestutil/record/buffer.go

@@ -0,0 +1,28 @@
+package record
+
+import (
+	"bytes"
+	"io"
+	"sync"
+)
+
+// Buffer is like bytes.Buffer but safe to access from multiple
+// goroutines.
+type Buffer struct {
+	mu  sync.Mutex
+	buf bytes.Buffer
+}
+
+var _ = io.Writer(&Buffer{})
+
+func (b *Buffer) Write(p []byte) (n int, err error) {
+	b.mu.Lock()
+	defer b.mu.Unlock()
+	return b.buf.Write(p)
+}
+
+func (b *Buffer) Bytes() []byte {
+	b.mu.Lock()
+	defer b.mu.Unlock()
+	return b.buf.Bytes()
+}

vendor/bazil.org/fuse/fs/fstestutil/record/record.go

@@ -0,0 +1,409 @@
+package record // import "bazil.org/fuse/fs/fstestutil/record"
+
+import (
+	"sync"
+	"sync/atomic"
+
+	"bazil.org/fuse"
+	"bazil.org/fuse/fs"
+	"golang.org/x/net/context"
+)
+
+// Writes gathers data from FUSE Write calls.
+type Writes struct {
+	buf Buffer
+}
+
+var _ = fs.HandleWriter(&Writes{})
+
+func (w *Writes) Write(ctx context.Context, req *fuse.WriteRequest, resp *fuse.WriteResponse) error {
+	n, err := w.buf.Write(req.Data)
+	resp.Size = n
+	if err != nil {
+		return err
+	}
+	return nil
+}
+
+func (w *Writes) RecordedWriteData() []byte {
+	return w.buf.Bytes()
+}
+
+// Counter records number of times a thing has occurred.
+type Counter struct {
+	count uint32
+}
+
+func (r *Counter) Inc() {
+	atomic.AddUint32(&r.count, 1)
+}
+
+func (r *Counter) Count() uint32 {
+	return atomic.LoadUint32(&r.count)
+}
+
+// MarkRecorder records whether a thing has occurred.
+type MarkRecorder struct {
+	count Counter
+}
+
+func (r *MarkRecorder) Mark() {
+	r.count.Inc()
+}
+
+func (r *MarkRecorder) Recorded() bool {
+	return r.count.Count() > 0
+}
+
+// Flushes notes whether a FUSE Flush call has been seen.
+type Flushes struct {
+	rec MarkRecorder
+}
+
+var _ = fs.HandleFlusher(&Flushes{})
+
+func (r *Flushes) Flush(ctx context.Context, req *fuse.FlushRequest) error {
+	r.rec.Mark()
+	return nil
+}
+
+func (r *Flushes) RecordedFlush() bool {
+	return r.rec.Recorded()
+}
+
+type Recorder struct {
+	mu  sync.Mutex
+	val interface{}
+}
+
+// Record that we've seen value. A nil value is indistinguishable from
+// no value recorded.
+func (r *Recorder) Record(value interface{}) {
+	r.mu.Lock()
+	r.val = value
+	r.mu.Unlock()
+}
+
+func (r *Recorder) Recorded() interface{} {
+	r.mu.Lock()
+	val := r.val
+	r.mu.Unlock()
+	return val
+}
+
+type RequestRecorder struct {
+	rec Recorder
+}
+
+// Record a fuse.Request, after zeroing header fields that are hard to
+// reproduce.
+//
+// Make sure to record a copy, not the original request.
+func (r *RequestRecorder) RecordRequest(req fuse.Request) {
+	hdr := req.Hdr()
+	*hdr = fuse.Header{}
+	r.rec.Record(req)
+}
+
+func (r *RequestRecorder) Recorded() fuse.Request {
+	val := r.rec.Recorded()
+	if val == nil {
+		return nil
+	}
+	return val.(fuse.Request)
+}
+
+// Setattrs records a Setattr request and its fields.
+type Setattrs struct {
+	rec RequestRecorder
+}
+
+var _ = fs.NodeSetattrer(&Setattrs{})
+
+func (r *Setattrs) Setattr(ctx context.Context, req *fuse.SetattrRequest, resp *fuse.SetattrResponse) error {
+	tmp := *req
+	r.rec.RecordRequest(&tmp)
+	return nil
+}
+
+func (r *Setattrs) RecordedSetattr() fuse.SetattrRequest {
+	val := r.rec.Recorded()
+	if val == nil {
+		return fuse.SetattrRequest{}
+	}
+	return *(val.(*fuse.SetattrRequest))
+}
+
+// Fsyncs records an Fsync request and its fields.
+type Fsyncs struct {
+	rec RequestRecorder
+}
+
+var _ = fs.NodeFsyncer(&Fsyncs{})
+
+func (r *Fsyncs) Fsync(ctx context.Context, req *fuse.FsyncRequest) error {
+	tmp := *req
+	r.rec.RecordRequest(&tmp)
+	return nil
+}
+
+func (r *Fsyncs) RecordedFsync() fuse.FsyncRequest {
+	val := r.rec.Recorded()
+	if val == nil {
+		return fuse.FsyncRequest{}
+	}
+	return *(val.(*fuse.FsyncRequest))
+}
+
+// Mkdirs records a Mkdir request and its fields.
+type Mkdirs struct {
+	rec RequestRecorder
+}
+
+var _ = fs.NodeMkdirer(&Mkdirs{})
+
+// Mkdir records the request and returns an error. Most callers should
+// wrap this call in a function that returns a more useful result.
+func (r *Mkdirs) Mkdir(ctx context.Context, req *fuse.MkdirRequest) (fs.Node, error) {
+	tmp := *req
+	r.rec.RecordRequest(&tmp)
+	return nil, fuse.EIO
+}
+
+// RecordedMkdir returns information about the Mkdir request.
+// If no request was seen, returns a zero value.
+func (r *Mkdirs) RecordedMkdir() fuse.MkdirRequest {
+	val := r.rec.Recorded()
+	if val == nil {
+		return fuse.MkdirRequest{}
+	}
+	return *(val.(*fuse.MkdirRequest))
+}
+
+// Symlinks records a Symlink request and its fields.
+type Symlinks struct {
+	rec RequestRecorder
+}
+
+var _ = fs.NodeSymlinker(&Symlinks{})
+
+// Symlink records the request and returns an error. Most callers should
+// wrap this call in a function that returns a more useful result.
+func (r *Symlinks) Symlink(ctx context.Context, req *fuse.SymlinkRequest) (fs.Node, error) {
+	tmp := *req
+	r.rec.RecordRequest(&tmp)
+	return nil, fuse.EIO
+}
+
+// RecordedSymlink returns information about the Symlink request.
+// If no request was seen, returns a zero value.
+func (r *Symlinks) RecordedSymlink() fuse.SymlinkRequest {
+	val := r.rec.Recorded()
+	if val == nil {
+		return fuse.SymlinkRequest{}
+	}
+	return *(val.(*fuse.SymlinkRequest))
+}
+
+// Links records a Link request and its fields.
+type Links struct {
+	rec RequestRecorder
+}
+
+var _ = fs.NodeLinker(&Links{})
+
+// Link records the request and returns an error. Most callers should
+// wrap this call in a function that returns a more useful result.
+func (r *Links) Link(ctx context.Context, req *fuse.LinkRequest, old fs.Node) (fs.Node, error) {
+	tmp := *req
+	r.rec.RecordRequest(&tmp)
+	return nil, fuse.EIO
+}
+
+// RecordedLink returns information about the Link request.
+// If no request was seen, returns a zero value.
+func (r *Links) RecordedLink() fuse.LinkRequest {
+	val := r.rec.Recorded()
+	if val == nil {
+		return fuse.LinkRequest{}
+	}
+	return *(val.(*fuse.LinkRequest))
+}
+
+// Mknods records a Mknod request and its fields.
+type Mknods struct {
+	rec RequestRecorder
+}
+
+var _ = fs.NodeMknoder(&Mknods{})
+
+// Mknod records the request and returns an error. Most callers should
+// wrap this call in a function that returns a more useful result.
+func (r *Mknods) Mknod(ctx context.Context, req *fuse.MknodRequest) (fs.Node, error) {
+	tmp := *req
+	r.rec.RecordRequest(&tmp)
+	return nil, fuse.EIO
+}
+
+// RecordedMknod returns information about the Mknod request.
+// If no request was seen, returns a zero value.
+func (r *Mknods) RecordedMknod() fuse.MknodRequest {
+	val := r.rec.Recorded()
+	if val == nil {
+		return fuse.MknodRequest{}
+	}
+	return *(val.(*fuse.MknodRequest))
+}
+
+// Opens records a Open request and its fields.
+type Opens struct {
+	rec RequestRecorder
+}
+
+var _ = fs.NodeOpener(&Opens{})
+
+// Open records the request and returns an error. Most callers should
+// wrap this call in a function that returns a more useful result.
+func (r *Opens) Open(ctx context.Context, req *fuse.OpenRequest, resp *fuse.OpenResponse) (fs.Handle, error) {
+	tmp := *req
+	r.rec.RecordRequest(&tmp)
+	return nil, fuse.EIO
+}
+
+// RecordedOpen returns information about the Open request.
+// If no request was seen, returns a zero value.
+func (r *Opens) RecordedOpen() fuse.OpenRequest {
+	val := r.rec.Recorded()
+	if val == nil {
+		return fuse.OpenRequest{}
+	}
+	return *(val.(*fuse.OpenRequest))
+}
+
+// Getxattrs records a Getxattr request and its fields.
+type Getxattrs struct {
+	rec RequestRecorder
+}
+
+var _ = fs.NodeGetxattrer(&Getxattrs{})
+
+// Getxattr records the request and returns an error. Most callers should
+// wrap this call in a function that returns a more useful result.
+func (r *Getxattrs) Getxattr(ctx context.Context, req *fuse.GetxattrRequest, resp *fuse.GetxattrResponse) error {
+	tmp := *req
+	r.rec.RecordRequest(&tmp)
+	return fuse.ErrNoXattr
+}
+
+// RecordedGetxattr returns information about the Getxattr request.
+// If no request was seen, returns a zero value.
+func (r *Getxattrs) RecordedGetxattr() fuse.GetxattrRequest {
+	val := r.rec.Recorded()
+	if val == nil {
+		return fuse.GetxattrRequest{}
+	}
+	return *(val.(*fuse.GetxattrRequest))
+}
+
+// Listxattrs records a Listxattr request and its fields.
+type Listxattrs struct {
+	rec RequestRecorder
+}
+
+var _ = fs.NodeListxattrer(&Listxattrs{})
+
+// Listxattr records the request and returns an error. Most callers should
+// wrap this call in a function that returns a more useful result.
+func (r *Listxattrs) Listxattr(ctx context.Context, req *fuse.ListxattrRequest, resp *fuse.ListxattrResponse) error {
+	tmp := *req
+	r.rec.RecordRequest(&tmp)
+	return fuse.ErrNoXattr
+}
+
+// RecordedListxattr returns information about the Listxattr request.
+// If no request was seen, returns a zero value.
+func (r *Listxattrs) RecordedListxattr() fuse.ListxattrRequest {
+	val := r.rec.Recorded()
+	if val == nil {
+		return fuse.ListxattrRequest{}
+	}
+	return *(val.(*fuse.ListxattrRequest))
+}
+
+// Setxattrs records a Setxattr request and its fields.
+type Setxattrs struct {
+	rec RequestRecorder
+}
+
+var _ = fs.NodeSetxattrer(&Setxattrs{})
+
+// Setxattr records the request and returns an error. Most callers should
+// wrap this call in a function that returns a more useful result.
+func (r *Setxattrs) Setxattr(ctx context.Context, req *fuse.SetxattrRequest) error {
+	tmp := *req
+	// The byte slice points to memory that will be reused, so make a
+	// deep copy.
+	tmp.Xattr = append([]byte(nil), req.Xattr...)
+	r.rec.RecordRequest(&tmp)
+	return nil
+}
+
+// RecordedSetxattr returns information about the Setxattr request.
+// If no request was seen, returns a zero value.
+func (r *Setxattrs) RecordedSetxattr() fuse.SetxattrRequest {
+	val := r.rec.Recorded()
+	if val == nil {
+		return fuse.SetxattrRequest{}
+	}
+	return *(val.(*fuse.SetxattrRequest))
+}
+
+// Removexattrs records a Removexattr request and its fields.
+type Removexattrs struct {
+	rec RequestRecorder
+}
+
+var _ = fs.NodeRemovexattrer(&Removexattrs{})
+
+// Removexattr records the request and returns an error. Most callers should
+// wrap this call in a function that returns a more useful result.
+func (r *Removexattrs) Removexattr(ctx context.Context, req *fuse.RemovexattrRequest) error {
+	tmp := *req
+	r.rec.RecordRequest(&tmp)
+	return nil
+}
+
+// RecordedRemovexattr returns information about the Removexattr request.
+// If no request was seen, returns a zero value.
+func (r *Removexattrs) RecordedRemovexattr() fuse.RemovexattrRequest {
+	val := r.rec.Recorded()
+	if val == nil {
+		return fuse.RemovexattrRequest{}
+	}
+	return *(val.(*fuse.RemovexattrRequest))
+}
+
+// Creates records a Create request and its fields.
+type Creates struct {
+	rec RequestRecorder
+}
+
+var _ = fs.NodeCreater(&Creates{})
+
+// Create records the request and returns an error. Most callers should
+// wrap this call in a function that returns a more useful result.
+func (r *Creates) Create(ctx context.Context, req *fuse.CreateRequest, resp *fuse.CreateResponse) (fs.Node, fs.Handle, error) {
+	tmp := *req
+	r.rec.RecordRequest(&tmp)
+	return nil, nil, fuse.EIO
+}
+
+// RecordedCreate returns information about the Create request.
+// If no request was seen, returns a zero value.
+func (r *Creates) RecordedCreate() fuse.CreateRequest {
+	val := r.rec.Recorded()
+	if val == nil {
+		return fuse.CreateRequest{}
+	}
+	return *(val.(*fuse.CreateRequest))
+}

vendor/bazil.org/fuse/fs/fstestutil/record/wait.go

@@ -0,0 +1,55 @@
+package record
+
+import (
+	"sync"
+	"time"
+
+	"bazil.org/fuse"
+	"bazil.org/fuse/fs"
+	"golang.org/x/net/context"
+)
+
+type nothing struct{}
+
+// ReleaseWaiter notes whether a FUSE Release call has been seen.
+//
+// Releases are not guaranteed to happen synchronously with any client
+// call, so they must be waited for.
+type ReleaseWaiter struct {
+	once sync.Once
+	seen chan nothing
+}
+
+var _ = fs.HandleReleaser(&ReleaseWaiter{})
+
+func (r *ReleaseWaiter) init() {
+	r.once.Do(func() {
+		r.seen = make(chan nothing, 1)
+	})
+}
+
+func (r *ReleaseWaiter) Release(ctx context.Context, req *fuse.ReleaseRequest) error {
+	r.init()
+	close(r.seen)
+	return nil
+}
+
+// WaitForRelease waits for Release to be called.
+//
+// With zero duration, wait forever. Otherwise, timeout early
+// in a more controller way than `-test.timeout`.
+//
+// Returns whether a Release was seen. Always true if dur==0.
+func (r *ReleaseWaiter) WaitForRelease(dur time.Duration) bool {
+	r.init()
+	var timeout <-chan time.Time
+	if dur > 0 {
+		timeout = time.After(dur)
+	}
+	select {
+	case <-r.seen:
+		return true
+	case <-timeout:
+		return false
+	}
+}

vendor/bazil.org/fuse/fs/fstestutil/testfs.go

@@ -0,0 +1,55 @@
+package fstestutil
+
+import (
+	"os"
+
+	"bazil.org/fuse"
+	"bazil.org/fuse/fs"
+	"golang.org/x/net/context"
+)
+
+// SimpleFS is a trivial FS that just implements the Root method.
+type SimpleFS struct {
+	Node fs.Node
+}
+
+var _ = fs.FS(SimpleFS{})
+
+func (f SimpleFS) Root() (fs.Node, error) {
+	return f.Node, nil
+}
+
+// File can be embedded in a struct to make it look like a file.
+type File struct{}
+
+func (f File) Attr(ctx context.Context, a *fuse.Attr) error {
+	a.Mode = 0666
+	return nil
+}
+
+// Dir can be embedded in a struct to make it look like a directory.
+type Dir struct{}
+
+func (f Dir) Attr(ctx context.Context, a *fuse.Attr) error {
+	a.Mode = os.ModeDir | 0777
+	return nil
+}
+
+// ChildMap is a directory with child nodes looked up from a map.
+type ChildMap map[string]fs.Node
+
+var _ = fs.Node(&ChildMap{})
+var _ = fs.NodeStringLookuper(&ChildMap{})
+
+func (f *ChildMap) Attr(ctx context.Context, a *fuse.Attr) error {
+	a.Mode = os.ModeDir | 0777
+	return nil
+}
+
+func (f *ChildMap) Lookup(ctx context.Context, name string) (fs.Node, error) {
+	child, ok := (*f)[name]
+	if !ok {
+		return nil, fuse.ENOENT
+	}
+	return child, nil
+}

vendor/bazil.org/fuse/fs/helpers_test.go

@@ -0,0 +1,67 @@
+package fs_test
+
+import (
+	"errors"
+	"flag"
+	"os"
+	"os/exec"
+	"path/filepath"
+	"testing"
+)
+
+var childHelpers = map[string]func(){}
+
+type childProcess struct {
+	name string
+	fn   func()
+}
+
+var _ flag.Value = (*childProcess)(nil)
+
+func (c *childProcess) String() string {
+	return c.name
+}
+
+func (c *childProcess) Set(s string) error {
+	fn, ok := childHelpers[s]
+	if !ok {
+		return errors.New("helper not found")
+	}
+	c.name = s
+	c.fn = fn
+	return nil
+}
+
+var childMode childProcess
+
+func init() {
+	flag.Var(&childMode, "fuse.internal.child", "internal use only")
+}
+
+// childCmd prepares a test function to be run in a subprocess, with
+// childMode set to true. Caller must still call Run or Start.
+//
+// Re-using the test executable as the subprocess is useful because
+// now test executables can e.g. be cross-compiled, transferred
+// between hosts, and run in settings where the whole Go development
+// environment is not installed.
+func childCmd(childName string) (*exec.Cmd, error) {
+	// caller may set cwd, so we can't rely on relative paths
+	executable, err := filepath.Abs(os.Args[0])
+	if err != nil {
+		return nil, err
+	}
+	cmd := exec.Command(executable, "-fuse.internal.child="+childName)
+	cmd.Stdout = os.Stdout
+	cmd.Stderr = os.Stderr
+	return cmd, nil
+}
+
+func TestMain(m *testing.M) {
+	flag.Parse()
+	if childMode.fn != nil {
+		childMode.fn()
+		os.Exit(0)
+	}
+	os.Exit(m.Run())
+}

vendor/bazil.org/fuse/fs/serve_darwin_test.go

@@ -0,0 +1,30 @@
+package fs_test
+
+import (
+	"testing"
+
+	"bazil.org/fuse/fs/fstestutil"
+	"golang.org/x/sys/unix"
+)
+
+type exchangeData struct {
+	fstestutil.File
+	// this struct cannot be zero size or multiple instances may look identical
+	_ int
+}
+
+func TestExchangeDataNotSupported(t *testing.T) {
+	t.Parallel()
+	mnt, err := fstestutil.MountedT(t, fstestutil.SimpleFS{&fstestutil.ChildMap{
+		"one": &exchangeData{},
+		"two": &exchangeData{},
+	}}, nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+	defer mnt.Close()
+
+	if err := unix.Exchangedata(mnt.Dir+"/one", mnt.Dir+"/two", 0); err != unix.ENOTSUP {
+		t.Fatalf("expected ENOTSUP from exchangedata: %v", err)
+	}
+}

vendor/bazil.org/fuse/fs/tree.go

@@ -0,0 +1,99 @@
+// FUSE directory tree, for servers that wish to use it with the service loop.
+
+package fs
+
+import (
+	"os"
+	pathpkg "path"
+	"strings"
+
+	"golang.org/x/net/context"
+)
+
+import (
+	"bazil.org/fuse"
+)
+
+// A Tree implements a basic read-only directory tree for FUSE.
+// The Nodes contained in it may still be writable.
+type Tree struct {
+	tree
+}
+
+func (t *Tree) Root() (Node, error) {
+	return &t.tree, nil
+}
+
+// Add adds the path to the tree, resolving to the given node.
+// If path or a prefix of path has already been added to the tree,
+// Add panics.
+//
+// Add is only safe to call before starting to serve requests.
+func (t *Tree) Add(path string, node Node) {
+	path = pathpkg.Clean("/" + path)[1:]
+	elems := strings.Split(path, "/")
+	dir := Node(&t.tree)
+	for i, elem := range elems {
+		dt, ok := dir.(*tree)
+		if !ok {
+			panic("fuse: Tree.Add for " + strings.Join(elems[:i], "/") + " and " + path)
+		}
+		n := dt.lookup(elem)
+		if n != nil {
+			if i+1 == len(elems) {
+				panic("fuse: Tree.Add for " + path + " conflicts with " + elem)
+			}
+			dir = n
+		} else {
+			if i+1 == len(elems) {
+				dt.add(elem, node)
+			} else {
+				dir = &tree{}
+				dt.add(elem, dir)
+			}
+		}
+	}
+}
+
+type treeDir struct {
+	name string
+	node Node
+}
+
+type tree struct {
+	dir []treeDir
+}
+
+func (t *tree) lookup(name string) Node {
+	for _, d := range t.dir {
+		if d.name == name {
+			return d.node
+		}
+	}
+	return nil
+}
+
+func (t *tree) add(name string, n Node) {
+	t.dir = append(t.dir, treeDir{name, n})
+}
+
+func (t *tree) Attr(ctx context.Context, a *fuse.Attr) error {
+	a.Mode = os.ModeDir | 0555
+	return nil
+}
+
+func (t *tree) Lookup(ctx context.Context, name string) (Node, error) {
+	n := t.lookup(name)
+	if n != nil {
+		return n, nil
+	}
+	return nil, fuse.ENOENT
+}
+
+func (t *tree) ReadDirAll(ctx context.Context) ([]fuse.Dirent, error) {
+	var out []fuse.Dirent
+	for _, d := range t.dir {
+		out = append(out, fuse.Dirent{Name: d.name})
+	}
+	return out, nil
+}