func NewNotifyTest(t *testing.T) *NotifyTest {
me := &NotifyTest{}
me.fs = newNotifyFs()
var err error
me.dir, err = ioutil.TempDir("", "go-fuse-notify_test")
if err != nil {
t.Fatalf("TempDir failed: %v", err)
}
entryTtl := 100 * time.Millisecond
opts := &nodefs.Options{
EntryTimeout: entryTtl,
AttrTimeout: entryTtl,
NegativeTimeout: entryTtl,
}
me.pathfs = pathfs.NewPathNodeFs(me.fs, nil)
me.state, me.connector, err = nodefs.MountRoot(me.dir, me.pathfs.Root(), opts)
if err != nil {
t.Fatalf("MountNodeFileSystem failed: %v", err)
}
me.state.SetDebug(VerboseTest())
go me.state.Serve()
return me
}
func setupCacheTest(t *testing.T) (string, *pathfs.PathNodeFs, func()) {
dir, err := ioutil.TempDir("", "go-fuse-cachetest")
if err != nil {
t.Fatalf("TempDir failed: %v", err)
}
os.Mkdir(dir+"/mnt", 0755)
os.Mkdir(dir+"/orig", 0755)
fs := &cacheFs{
pathfs.NewLoopbackFileSystem(dir + "/orig"),
}
pfs := pathfs.NewPathNodeFs(fs, nil)
state, conn, err := nodefs.MountRoot(dir+"/mnt", pfs.Root(), nil)
if err != nil {
t.Fatalf("MountNodeFileSystem failed: %v", err)
}
state.SetDebug(VerboseTest())
conn.SetDebug(VerboseTest())
pfs.SetDebug(VerboseTest())
go state.Serve()
return dir, pfs, func() {
err := state.Unmount()
if err == nil {
os.RemoveAll(dir)
}
}
}
func setupFs(fs pathfs.FileSystem) (string, func()) {
opts := &nodefs.Options{
EntryTimeout: 0.0,
AttrTimeout: 0.0,
NegativeTimeout: 0.0,
}
mountPoint, _ := ioutil.TempDir("", "stat_test")
nfs := pathfs.NewPathNodeFs(fs, nil)
state, _, err := nodefs.MountRoot(mountPoint, nfs.Root(), opts)
if err != nil {
panic(fmt.Sprintf("cannot mount %v", err)) // ugh - benchmark has no error methods.
}
lmap := NewLatencyMap()
state.RecordLatencies(lmap)
// state.SetDebug(true)
go state.Serve()
return mountPoint, func() {
lc, lns := lmap.Get("LOOKUP")
gc, gns := lmap.Get("GETATTR")
fmt.Printf("GETATTR %v/call n=%d, LOOKUP %v/call n=%d\n",
gns/time.Duration(gc), gc,
lns/time.Duration(lc), lc)
err := state.Unmount()
if err != nil {
log.Println("error during unmount", err)
} else {
os.RemoveAll(mountPoint)
}
}
}
func TestOriginalIsSymlink(t *testing.T) {
tmpDir, err := ioutil.TempDir("", "go-fuse-loopback_test")
if err != nil {
t.Fatalf("TempDir failed: %v", err)
}
defer os.RemoveAll(tmpDir)
orig := tmpDir + "/orig"
err = os.Mkdir(orig, 0755)
if err != nil {
t.Fatalf("Mkdir failed: %v", err)
}
link := tmpDir + "/link"
mnt := tmpDir + "/mnt"
if err := os.Mkdir(mnt, 0755); err != nil {
t.Fatalf("Mkdir failed: %v", err)
}
if err := os.Symlink("orig", link); err != nil {
t.Fatalf("Symlink failed: %v", err)
}
fs := pathfs.NewLoopbackFileSystem(link)
nfs := pathfs.NewPathNodeFs(fs, nil)
state, _, err := nodefs.MountRoot(mnt, nfs.Root(), nil)
if err != nil {
t.Fatalf("MountNodeFileSystem failed: %v", err)
}
defer state.Unmount()
go state.Serve()
if _, err := os.Lstat(mnt); err != nil {
t.Fatalf("Lstat failed: %v", err)
}
}
func setup(t *testing.T) (workdir string, cleanup func()) {
wd, _ := ioutil.TempDir("", "")
err := os.Mkdir(wd+"/mnt", 0700)
if err != nil {
t.Fatalf("Mkdir failed: %v", err)
}
err = os.Mkdir(wd+"/store", 0700)
if err != nil {
t.Fatalf("Mkdir failed: %v", err)
}
os.Mkdir(wd+"/ro", 0700)
if err != nil {
t.Fatalf("Mkdir failed: %v", err)
}
WriteFile(t, wd+"/ro/file1", "file1")
WriteFile(t, wd+"/ro/file2", "file2")
fs := NewAutoUnionFs(wd+"/store", testAOpts)
nfs := pathfs.NewPathNodeFs(fs, nil)
state, _, err := nodefs.MountRoot(wd+"/mnt", nfs.Root(), &testAOpts.Options)
if err != nil {
t.Fatalf("MountNodeFileSystem failed: %v", err)
}
fs.SetDebug(VerboseTest())
go state.Serve()
return wd, func() {
state.Unmount()
os.RemoveAll(wd)
}
}
func TestNonseekable(t *testing.T) {
fs := &nonseekFs{FileSystem: pathfs.NewDefaultFileSystem()}
fs.Length = 200 * 1024
dir, err := ioutil.TempDir("", "go-fuse-cache_test")
if err != nil {
t.Fatalf("failed: %v", err)
}
defer os.RemoveAll(dir)
nfs := pathfs.NewPathNodeFs(fs, nil)
state, _, err := nodefs.MountRoot(dir, nfs.Root(), nil)
if err != nil {
t.Fatalf("failed: %v", err)
}
state.SetDebug(VerboseTest())
defer state.Unmount()
go state.Serve()
f, err := os.Open(dir + "/file")
if err != nil {
t.Fatalf("failed: %v", err)
}
defer f.Close()
b := make([]byte, 200)
n, err := f.ReadAt(b, 20)
if err == nil || n > 0 {
t.Errorf("file was opened nonseekable, but seek successful")
}
}
func setupFAttrTest(t *testing.T, fs pathfs.FileSystem) (dir string, clean func()) {
dir, err := ioutil.TempDir("", "go-fuse-fsetattr_test")
if err != nil {
t.Fatalf("TempDir failed: %v", err)
}
nfs := pathfs.NewPathNodeFs(fs, nil)
state, _, err := nodefs.MountRoot(dir, nfs.Root(), nil)
if err != nil {
t.Fatalf("MountNodeFileSystem failed: %v", err)
}
state.SetDebug(VerboseTest())
go state.Serve()
// Trigger INIT.
os.Lstat(dir)
if state.KernelSettings().Flags&fuse.CAP_FILE_OPS == 0 {
t.Log("Mount does not support file operations")
}
return dir, func() {
if state.Unmount() == nil {
os.RemoveAll(dir)
}
}
}
// 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 []pathfs.FileSystem
fses = append(fses, pathfs.NewLoopbackFileSystem(wd+"/rw"))
fses = append(fses,
NewCachingFileSystem(pathfs.NewLoopbackFileSystem(wd+"/ro"), 0))
ufs, err := NewUnionFs(fses, testOpts)
if err != nil {
t.Fatalf("NewUnionFs: %v", err)
}
// We configure timeouts are smaller, so we can check for
// UnionFs's cache consistency.
opts := &nodefs.Options{
EntryTimeout: entryTtl / 2,
AttrTimeout: entryTtl / 2,
NegativeTimeout: entryTtl / 2,
PortableInodes: true,
}
pathfs := pathfs.NewPathNodeFs(ufs,
&pathfs.PathNodeFsOptions{ClientInodes: true})
state, conn, err := nodefs.MountRoot(wd+"/mnt", pathfs.Root(), opts)
if err != nil {
t.Fatalf("MountNodeFileSystem failed: %v", err)
}
conn.SetDebug(VerboseTest())
state.SetDebug(VerboseTest())
pathfs.SetDebug(VerboseTest())
go state.Serve()
return wd, func() {
err := state.Unmount()
if err != nil {
return
}
setRecursiveWritable(t, wd, true)
os.RemoveAll(wd)
}
}
func main() {
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.")
hide_readonly_link := flag.Bool("hide_readonly_link", true,
"Hides READONLY link from the top mountpoints. "+
"Enabled by default.")
portableInodes := flag.Bool("portable-inodes", false,
"Use sequential 32-bit inode numbers.")
flag.Parse()
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,
Options: nodefs.Options{
EntryTimeout: time.Second,
AttrTimeout: time.Second,
NegativeTimeout: time.Second,
Owner: fuse.CurrentOwner(),
},
UpdateOnMount: true,
PathNodeFsOptions: pathfs.PathNodeFsOptions{
ClientInodes: *hardlinks,
},
HideReadonly: *hide_readonly_link,
}
fsOpts := nodefs.Options{
PortableInodes: *portableInodes,
}
gofs := unionfs.NewAutoUnionFs(flag.Arg(1), options)
pathfs := pathfs.NewPathNodeFs(gofs, nil)
state, conn, err := nodefs.MountRoot(flag.Arg(0), pathfs.Root(), &fsOpts)
if err != nil {
fmt.Printf("Mount fail: %v\n", err)
os.Exit(1)
}
pathfs.SetDebug(*debug)
conn.SetDebug(*debug)
state.SetDebug(*debug)
state.Serve()
time.Sleep(1 * time.Second)
}
// Create and mount filesystem.
func NewTestCase(t *testing.T) *testCase {
tc := &testCase{}
tc.tester = t
// Make sure system setting does not affect test.
syscall.Umask(0)
const name string = "hello.txt"
const subdir string = "subdir"
var err error
tc.tmpDir, err = ioutil.TempDir("", "go-fuse")
if err != nil {
t.Fatalf("TempDir failed: %v", err)
}
tc.orig = tc.tmpDir + "/orig"
tc.mnt = tc.tmpDir + "/mnt"
os.Mkdir(tc.orig, 0700)
os.Mkdir(tc.mnt, 0700)
tc.mountFile = filepath.Join(tc.mnt, name)
tc.mountSubdir = filepath.Join(tc.mnt, subdir)
tc.origFile = filepath.Join(tc.orig, name)
tc.origSubdir = filepath.Join(tc.orig, subdir)
var pfs pathfs.FileSystem
pfs = pathfs.NewLoopbackFileSystem(tc.orig)
pfs = pathfs.NewLockingFileSystem(pfs)
tc.pathFs = pathfs.NewPathNodeFs(pfs, &pathfs.PathNodeFsOptions{
ClientInodes: true})
tc.connector = nodefs.NewFileSystemConnector(tc.pathFs.Root(),
&nodefs.Options{
EntryTimeout: testTtl,
AttrTimeout: testTtl,
NegativeTimeout: 0.0,
})
tc.connector.SetDebug(VerboseTest())
tc.state, err = fuse.NewServer(
fuse.NewRawFileSystem(tc.connector.RawFS()), tc.mnt, &fuse.MountOptions{SingleThreaded: true})
if err != nil {
t.Fatal("NewServer:", err)
}
tc.state.SetDebug(VerboseTest())
// Unthreaded, but in background.
go tc.state.Serve()
tc.state.WaitMount()
return tc
}
func main() {
flag.Parse()
if len(flag.Args()) < 1 {
log.Fatal("Usage:\n hello MOUNTPOINT")
}
nfs := pathfs.NewPathNodeFs(&HelloFs{FileSystem: pathfs.NewDefaultFileSystem()}, nil)
server, _, err := nodefs.MountRoot(flag.Arg(0), nfs.Root(), nil)
if err != nil {
log.Fatalf("Mount fail: %v\n", err)
}
server.Serve()
}
func main() {
flag.Parse()
if len(flag.Args()) < 1 {
log.Fatal("Usage:\n hello MOUNTPOINT")
}
pnf := pathfs.NewPathNodeFs(&NekoFs{FileSystem: pathfs.NewDefaultFileSystem()}, &pathfs.PathNodeFsOptions{ClientInodes: true})
// pnf.SetDebug(true)
server, _, err := nodefs.MountRoot(flag.Arg(0), pnf.Root(), nil)
if err != nil {
log.Fatalf("Mount fail: %v\n", err)
}
server.Serve()
}
func TestMountRename(t *testing.T) {
ts := NewTestCase(t)
defer ts.Cleanup()
fs := pathfs.NewPathNodeFs(pathfs.NewLoopbackFileSystem(ts.orig), nil)
code := ts.connector.Mount(ts.rootNode(), "mnt", fs.Root(), nil)
if !code.Ok() {
t.Fatal("mount should succeed")
}
err := os.Rename(ts.mnt+"/mnt", ts.mnt+"/foobar")
if fuse.ToStatus(err) != fuse.EBUSY {
t.Fatal("rename mount point should fail with EBUSY:", err)
}
ts.pathFs.Unmount("mnt")
}
func TestGetAttrRace(t *testing.T) {
dir, err := ioutil.TempDir("", "go-fuse-cache_test")
if err != nil {
t.Fatalf("failed: %v", err)
}
defer os.RemoveAll(dir)
os.Mkdir(dir+"/mnt", 0755)
os.Mkdir(dir+"/orig", 0755)
fs := pathfs.NewLoopbackFileSystem(dir + "/orig")
pfs := pathfs.NewPathNodeFs(fs, nil)
state, conn, err := nodefs.MountRoot(dir+"/mnt", pfs.Root(),
&nodefs.Options{})
if err != nil {
t.Fatalf("MountNodeFileSystem failed: %v", err)
}
state.SetDebug(VerboseTest())
conn.SetDebug(VerboseTest())
pfs.SetDebug(VerboseTest())
go state.Serve()
defer state.Unmount()
var wg sync.WaitGroup
n := 100
wg.Add(n)
var statErr error
for i := 0; i < n; i++ {
go func() {
defer wg.Done()
fn := dir + "/mnt/file"
err := ioutil.WriteFile(fn, []byte{42}, 0644)
if err != nil {
statErr = err
return
}
_, err = os.Lstat(fn)
if err != nil {
statErr = err
}
}()
}
wg.Wait()
if statErr != nil {
t.Error(statErr)
}
}
func TestRecursiveMount(t *testing.T) {
ts := NewTestCase(t)
defer ts.Cleanup()
err := ioutil.WriteFile(ts.orig+"/hello.txt", []byte("blabla"), 0644)
if err != nil {
t.Fatalf("WriteFile failed: %v", err)
}
fs := pathfs.NewPathNodeFs(pathfs.NewLoopbackFileSystem(ts.orig), nil)
code := ts.connector.Mount(ts.rootNode(), "mnt", fs.Root(), nil)
if !code.Ok() {
t.Fatal("mount should succeed")
}
submnt := ts.mnt + "/mnt"
_, err = os.Lstat(submnt)
if err != nil {
t.Fatalf("Lstat failed: %v", err)
}
_, err = os.Lstat(filepath.Join(submnt, "hello.txt"))
if err != nil {
t.Fatalf("Lstat failed: %v", err)
}
f, err := os.Open(filepath.Join(submnt, "hello.txt"))
if err != nil {
t.Fatalf("Open failed: %v", err)
}
t.Log("Attempting unmount, should fail")
code = ts.pathFs.Unmount("mnt")
if code != fuse.EBUSY {
t.Error("expect EBUSY")
}
f.Close()
t.Log("Waiting for kernel to flush file-close to fuse...")
time.Sleep(testTtl)
t.Log("Attempting unmount, should succeed")
code = ts.pathFs.Unmount("mnt")
if code != fuse.OK {
t.Error("umount failed.", code)
}
}
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 := pathfs.NewPathNodeFs(ufs, &pathfs.PathNodeFsOptions{ClientInodes: true})
mOpts := nodefs.Options{
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 := nodefs.MountRoot(flag.Arg(0), nodeFs.Root(), &mOpts)
if err != nil {
log.Fatal("Mount fail:", err)
}
mountState.SetDebug(*debug)
mountState.Serve()
}
func TestMountReaddir(t *testing.T) {
ts := NewTestCase(t)
defer ts.Cleanup()
fs := pathfs.NewPathNodeFs(pathfs.NewLoopbackFileSystem(ts.orig), nil)
code := ts.connector.Mount(ts.rootNode(), "mnt", fs.Root(), nil)
if !code.Ok() {
t.Fatal("mount should succeed")
}
entries, err := ioutil.ReadDir(ts.mnt)
if err != nil {
t.Fatalf("ReadDir failed: %v", err)
}
if len(entries) != 1 || entries[0].Name() != "mnt" {
t.Error("wrong readdir result", entries)
}
ts.pathFs.Unmount("mnt")
}
func main() {
// Scans the arg list and sets up flags
debug := flag.Bool("debug", false, "print debugging messages.")
other := flag.Bool("allow-other", false, "mount with -o allowother.")
flag.Parse()
if flag.NArg() < 2 {
// TODO - where to get program name?
fmt.Println("usage: main MOUNTPOINT ORIGINAL")
os.Exit(2)
}
var finalFs pathfs.FileSystem
orig := flag.Arg(1)
loopbackfs := pathfs.NewLoopbackFileSystem(orig)
finalFs = loopbackfs
opts := &nodefs.Options{
// These options are to be compatible with libfuse defaults,
// making benchmarking easier.
NegativeTimeout: time.Second,
AttrTimeout: time.Second,
EntryTimeout: time.Second,
}
pathFs := pathfs.NewPathNodeFs(finalFs, nil)
conn := nodefs.NewFileSystemConnector(pathFs.Root(), opts)
mountPoint := flag.Arg(0)
origAbs, _ := filepath.Abs(orig)
mOpts := &fuse.MountOptions{
AllowOther: *other,
Name: "loopbackfs",
FsName: origAbs,
}
state, err := fuse.NewServer(conn.RawFS(), mountPoint, mOpts)
if err != nil {
fmt.Printf("Mount fail: %v\n", err)
os.Exit(1)
}
state.SetDebug(*debug)
fmt.Println("Mounted!")
state.Serve()
}
func setupMzfs(t *testing.T) (mountPoint string, cleanup func()) {
fs := NewMultiZipFs()
mountPoint, _ = ioutil.TempDir("", "")
nfs := pathfs.NewPathNodeFs(fs, nil)
state, _, err := nodefs.MountRoot(mountPoint, nfs.Root(), &nodefs.Options{
EntryTimeout: testTtl,
AttrTimeout: testTtl,
NegativeTimeout: 0.0,
})
if err != nil {
t.Fatalf("MountNodeFileSystem failed: %v", err)
}
state.SetDebug(VerboseTest())
go state.Serve()
return mountPoint, func() {
state.Unmount()
os.RemoveAll(mountPoint)
}
}
func (fs *autoUnionFs) createFs(name string, roots []string) fuse.Status {
fs.lock.Lock()
defer fs.lock.Unlock()
if fs.zombies[name] {
log.Printf("filesystem named %q is being removed", name)
return fuse.EBUSY
}
for workspace, root := range fs.nameRootMap {
if root == roots[0] && workspace != name {
log.Printf("Already have a union FS for directory %s in workspace %s",
roots[0], workspace)
return fuse.EBUSY
}
}
known := fs.knownFileSystems[name]
if known.unionFS != nil {
log.Println("Already have a workspace:", name)
return fuse.EBUSY
}
ufs, err := NewUnionFsFromRoots(roots, &fs.options.UnionFsOptions, true)
if err != nil {
log.Println("Could not create UnionFs:", err)
return fuse.EPERM
}
log.Printf("Adding workspace %v for roots %v", name, ufs.String())
nfs := pathfs.NewPathNodeFs(ufs, &fs.options.PathNodeFsOptions)
code := fs.nodeFs.Mount(name, nfs.Root(), &fs.options.Options)
if code.Ok() {
fs.knownFileSystems[name] = knownFs{
ufs,
nfs,
}
fs.nameRootMap[name] = roots[0]
}
return code
}
func main() {
// Scans the arg list and sets up flags
debug := flag.Bool("debug", false, "debug on")
flag.Parse()
if flag.NArg() < 1 {
_, prog := filepath.Split(os.Args[0])
fmt.Printf("usage: %s MOUNTPOINT\n", prog)
os.Exit(2)
}
fs := zipfs.NewMultiZipFs()
nfs := pathfs.NewPathNodeFs(fs, nil)
state, _, err := nodefs.MountRoot(flag.Arg(0), nfs.Root(), nil)
if err != nil {
fmt.Printf("Mount fail: %v\n", err)
os.Exit(1)
}
state.SetDebug(*debug)
state.Serve()
}
func TestDeletedUnmount(t *testing.T) {
ts := NewTestCase(t)
defer ts.Cleanup()
submnt := filepath.Join(ts.mnt, "mnt")
pfs2 := pathfs.NewPathNodeFs(pathfs.NewLoopbackFileSystem(ts.orig), nil)
code := ts.connector.Mount(ts.rootNode(), "mnt", pfs2.Root(), nil)
if !code.Ok() {
t.Fatal("Mount error", code)
}
f, err := os.Create(filepath.Join(submnt, "hello.txt"))
if err != nil {
t.Fatalf("Create failed: %v", err)
}
t.Log("Removing")
err = os.Remove(filepath.Join(submnt, "hello.txt"))
if err != nil {
t.Fatalf("Remove failed: %v", err)
}
t.Log("Removing")
_, err = f.Write([]byte("bla"))
if err != nil {
t.Fatalf("Write failed: %v", err)
}
code = ts.pathFs.Unmount("mnt")
if code != fuse.EBUSY {
t.Error("expect EBUSY for unmount with open files", code)
}
f.Close()
time.Sleep((3 * testTtl) / 2)
code = ts.pathFs.Unmount("mnt")
if !code.Ok() {
t.Error("should succeed", code)
}
}
func TestXAttrCaching(t *testing.T) {
wd, _ := ioutil.TempDir("", "unionfs")
defer os.RemoveAll(wd)
os.Mkdir(wd+"/mnt", 0700)
err := os.Mkdir(wd+"/rw", 0700)
if err != nil {
t.Fatalf("Mkdir failed: %v", err)
}
rwFS := pathfs.NewLoopbackFileSystem(wd + "/rw")
roFS := &TestFS{
FileSystem: pathfs.NewDefaultFileSystem(),
}
ufs, err := NewUnionFs([]pathfs.FileSystem{rwFS,
NewCachingFileSystem(roFS, entryTtl)}, testOpts)
if err != nil {
t.Fatalf("NewUnionFs: %v", err)
}
opts := &nodefs.Options{
EntryTimeout: entryTtl / 2,
AttrTimeout: entryTtl / 2,
NegativeTimeout: entryTtl / 2,
}
pathfs := pathfs.NewPathNodeFs(ufs,
&pathfs.PathNodeFsOptions{ClientInodes: true})
server, conn, err := nodefs.MountRoot(wd+"/mnt", pathfs.Root(), opts)
if err != nil {
t.Fatalf("MountNodeFileSystem failed: %v", err)
}
server.SetDebug(VerboseTest())
conn.SetDebug(VerboseTest())
pathfs.SetDebug(VerboseTest())
defer server.Unmount()
go server.Serve()
if fi, err := os.Lstat(wd + "/mnt"); err != nil || !fi.IsDir() {
t.Fatalf("root not readable: %v, %v", err, fi)
}
buf := make([]byte, 1024)
n, err := syscall.Getxattr(wd+"/mnt/file", "user.attr", buf)
if err != nil {
t.Fatalf("Getxattr: %v", err)
}
want := "\x2a"
got := string(buf[:n])
if got != want {
t.Fatalf("Got %q want %q", got, err)
}
time.Sleep(entryTtl / 2)
n, err = syscall.Getxattr(wd+"/mnt/file", "user.attr", buf)
if err != nil {
t.Fatalf("Getxattr: %v", err)
}
got = string(buf[:n])
if got != want {
t.Fatalf("Got %q want %q", got, err)
}
server.Unmount()
if roFS.xattrRead != 1 {
t.Errorf("got xattrRead=%d, want 1", roFS.xattrRead)
}
}
func TestUnionFsDisappearing(t *testing.T) {
// This init is like setupUfs, but we want access to the
// writable Fs.
wd, _ := ioutil.TempDir("", "")
defer os.RemoveAll(wd)
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)
}
wrFs := newDisappearingFS(pathfs.NewLoopbackFileSystem(wd+"/rw"),
pathfs.NewLoopbackFileSystem("/dev/null"))
var fses []pathfs.FileSystem
fses = append(fses, pathfs.NewLockingFileSystem(wrFs))
fses = append(fses, pathfs.NewLoopbackFileSystem(wd+"/ro"))
ufs, err := NewUnionFs(fses, testOpts)
if err != nil {
t.Fatalf("NewUnionFs: %v", err)
}
opts := &nodefs.Options{
EntryTimeout: entryTtl,
AttrTimeout: entryTtl,
NegativeTimeout: entryTtl,
}
nfs := pathfs.NewPathNodeFs(ufs, nil)
state, _, err := nodefs.MountRoot(wd+"/mnt", nfs.Root(), opts)
if err != nil {
t.Fatalf("MountNodeFileSystem failed: %v", err)
}
defer state.Unmount()
state.SetDebug(VerboseTest())
go state.Serve()
log.Println("TestUnionFsDisappearing2")
err = ioutil.WriteFile(wd+"/ro/file", []byte("blabla"), 0644)
if err != nil {
t.Fatalf("WriteFile failed: %v", err)
}
setRecursiveWritable(t, wd+"/ro", false)
err = os.Remove(wd + "/mnt/file")
if err != nil {
t.Fatalf("Remove failed: %v", err)
}
wrFs.visibleChan <- false
time.Sleep((3 * entryTtl) / 2)
_, err = ioutil.ReadDir(wd + "/mnt")
if err == nil {
t.Fatal("Readdir should have failed")
}
log.Println("expected readdir failure:", err)
err = ioutil.WriteFile(wd+"/mnt/file2", []byte("blabla"), 0644)
if err == nil {
t.Fatal("write should have failed")
}
log.Println("expected write failure:", err)
// Restore, and wait for caches to catch up.
wrFs.visibleChan <- true
time.Sleep((3 * entryTtl) / 2)
_, err = ioutil.ReadDir(wd + "/mnt")
if err != nil {
t.Fatal("Readdir should succeed", err)
}
err = ioutil.WriteFile(wd+"/mnt/file2", []byte("blabla"), 0644)
if err != nil {
t.Fatal("write should succeed", err)
}
}
func main() {
// Scans the arg list and sets up flags
debug := flag.Bool("debug", false, "print debugging messages.")
profile := flag.String("profile", "", "record cpu profile.")
mem_profile := flag.String("mem-profile", "", "record memory profile.")
command := flag.String("run", "", "run this command after mounting.")
ttl := flag.Float64("ttl", 1.0, "attribute/entry cache TTL.")
flag.Parse()
if flag.NArg() < 2 {
fmt.Fprintf(os.Stderr, "usage: %s MOUNTPOINT FILENAMES-FILE\n", os.Args[0])
os.Exit(2)
}
var profFile, memProfFile io.Writer
var err error
if *profile != "" {
profFile, err = os.Create(*profile)
if err != nil {
log.Fatalf("os.Create: %v", err)
}
}
if *mem_profile != "" {
memProfFile, err = os.Create(*mem_profile)
if err != nil {
log.Fatalf("os.Create: %v", err)
}
}
fs := benchmark.NewStatFs()
lines := benchmark.ReadLines(flag.Arg(1))
for _, l := range lines {
fs.AddFile(l)
}
nfs := pathfs.NewPathNodeFs(fs, nil)
opts := &nodefs.Options{
AttrTimeout: time.Duration(*ttl * float64(time.Second)),
EntryTimeout: time.Duration(*ttl * float64(time.Second)),
}
state, _, err := nodefs.MountRoot(flag.Arg(0), nfs.Root(), opts)
if err != nil {
fmt.Printf("Mount fail: %v\n", err)
os.Exit(1)
}
state.SetDebug(*debug)
runtime.GC()
if profFile != nil {
pprof.StartCPUProfile(profFile)
defer pprof.StopCPUProfile()
}
if *command != "" {
args := strings.Split(*command, " ")
cmd := exec.Command(args[0], args[1:]...)
cmd.Stdout = os.Stdout
cmd.Start()
}
state.Serve()
if memProfFile != nil {
pprof.WriteHeapProfile(memProfFile)
}
}