func (s *fuseTestSuite) TestSimpleFile() {
datasetName := "TestSimpleFile"
str := spec.CreateValueSpecString("ldb", s.LdbDir, datasetName)
var testfs pathfs.FileSystem
start(str, func(fs pathfs.FileSystem) { testfs = fs })
file, code := testfs.Create("coconut", uint32(os.O_CREATE|os.O_RDWR), 0644, nil)
assert.Equal(s.T(), fuse.OK, code)
n, code := file.Write([]byte("Lime!"), 0)
assert.Equal(s.T(), uint32(5), n)
assertAttr(s, testfs, "coconut", 0644|fuse.S_IFREG, 5)
data := make([]byte, 5)
rr, code := file.Read(data, 0)
assert.Equal(s.T(), fuse.OK, code)
assert.Equal(s.T(), 5, rr.Size())
assert.Equal(s.T(), "Lime!", string(data))
code = testfs.Truncate("coconut", 4, nil)
assert.Equal(s.T(), fuse.OK, code)
assertAttr(s, testfs, "coconut", 0644|fuse.S_IFREG, 4)
rr, code = file.Read(data, 0)
assert.Equal(s.T(), fuse.OK, code)
assert.Equal(s.T(), 4, rr.Size())
assert.Equal(s.T(), "Lime!", string(data))
}
func getAttr(fs pathfs.FileSystem, name string) *attrResponse {
a, code := fs.GetAttr(name, nil)
return &attrResponse{
Attr: a,
Status: code,
}
}
func readLink(fs pathfs.FileSystem, name string) *linkResponse {
a, code := fs.Readlink(name, nil)
return &linkResponse{
linkContent: a,
Status: code,
}
}
func getXAttr(fs pathfs.FileSystem, nameAttr string) *xattrResponse {
ns := strings.SplitN(nameAttr, _XATTRSEP, 2)
a, code := fs.GetXAttr(ns[0], ns[1], nil)
return &xattrResponse{
data: a,
Status: code,
}
}
func assertAttr(s *fuseTestSuite, fs pathfs.FileSystem, path string, mode uint32, size uint64) {
attr, code := fs.GetAttr(path, nil)
assert.Equal(s.T(), fuse.OK, code)
if code == fuse.OK {
assert.Equal(s.T(), mode, attr.Mode)
assert.Equal(s.T(), size, attr.Size)
}
}
func readDir(fs pathfs.FileSystem, name string) *dirResponse {
origStream, code := fs.OpenDir(name, nil)
r := &dirResponse{nil, code}
if !code.Ok() {
return r
}
r.entries = origStream
return r
}
func (s *fuseTestSuite) TestFile() {
datasetName := "TestFile"
str := spec.CreateValueSpecString("ldb", s.LdbDir, datasetName)
var testfs pathfs.FileSystem
start(str, func(fs pathfs.FileSystem) { testfs = fs })
_, code := testfs.Create("pokemon.go", uint32(os.O_CREATE)|uint32(os.O_WRONLY), 0644, nil)
assert.Equal(s.T(), fuse.OK, code)
assertAttr(s, testfs, "pokemon.go", 0644|fuse.S_IFREG, 0)
}
func (s *fuseTestSuite) TestDir() {
datasetName := "TestDir"
str := spec.CreateValueSpecString("ldb", s.LdbDir, datasetName)
var testfs pathfs.FileSystem
start(str, func(fs pathfs.FileSystem) { testfs = fs })
code := testfs.Mkdir("noms", 0777, nil)
assert.Equal(s.T(), fuse.OK, code)
assertAttr(s, testfs, "noms", 0777|fuse.S_IFDIR, 0)
}
func (s *fuseTestSuite) TestSymlink() {
datasetName := "TestSymlink"
str := spec.CreateValueSpecString("ldb", s.LdbDir, datasetName)
var testfs pathfs.FileSystem
start(str, func(fs pathfs.FileSystem) { testfs = fs })
code := testfs.Symlink("there", "here", nil)
assert.Equal(s.T(), fuse.OK, code)
assertAttr(s, testfs, "here", 0755|fuse.S_IFLNK, 0)
value, code := testfs.Readlink("here", nil)
assert.Equal(s.T(), fuse.OK, code)
assert.Equal(s.T(), "there", value)
}
func (s *fuseTestSuite) TestUnlink() {
datasetName := "TestUnlink"
str := spec.CreateValueSpecString("ldb", s.LdbDir, datasetName)
var testfs pathfs.FileSystem
start(str, func(fs pathfs.FileSystem) { testfs = fs })
_, code := testfs.Create("dilma", uint32(os.O_CREATE)|uint32(os.O_WRONLY), 0755, nil)
assert.Equal(s.T(), fuse.OK, code)
assertAttr(s, testfs, "", 0777|fuse.S_IFDIR, 1) // 1 means it's there
code = testfs.Unlink("dilma", nil)
assert.Equal(s.T(), fuse.OK, code)
assertAttr(s, testfs, "", 0777|fuse.S_IFDIR, 0) // 0 means no entries
}
func (s *fuseTestSuite) TestRmdir() {
datasetName := "TestRmdir"
str := spec.CreateValueSpecString("ldb", s.LdbDir, datasetName)
var testfs pathfs.FileSystem
start(str, func(fs pathfs.FileSystem) { testfs = fs })
code := testfs.Mkdir("wikileaks", 0755, nil)
assert.Equal(s.T(), fuse.OK, code)
assertAttr(s, testfs, "", 0777|fuse.S_IFDIR, 1) // 1 means it's there
code = testfs.Rmdir("wikileaks", nil)
assert.Equal(s.T(), fuse.OK, code)
assertAttr(s, testfs, "", 0777|fuse.S_IFDIR, 0) // 0 means no entries
}
func findDir(fs pathfs.FileSystem, path string, delimiter string) []string {
ents, _ := fs.OpenDir(path, nil)
ret := make([]string, 0)
for _, ent := range ents {
child := path + delimiter + ent.Name
attr, _ := fs.GetAttr(child, nil)
if attr.Mode&fuse.S_IFDIR != 0 {
ret = append(ret, child+"/")
ret = append(ret, findDir(fs, child, "/")...)
} else {
ret = append(ret, child)
}
}
return ret
}
// NewMemUnionFs instantiates a new union file system. Calling this
// will access the root of the supplied R/O filesystem.
func NewMemUnionFs(backingStore string, roFs pathfs.FileSystem) (*MemUnionFs, error) {
me := &MemUnionFs{
deleted: make(map[string]bool),
backingStore: backingStore,
readonly: roFs,
}
me.root = me.newNode(true)
fi, code := roFs.GetAttr("", nil)
if !code.Ok() {
return nil, fmt.Errorf("GetAttr(\"\") for R/O returned %v", code)
}
me.root.info = *fi
me.cond = sync.NewCond(&me.mutex)
return me, nil
}
// newDirnameMap reads the contents of the given directory. On error,
// returns a nil map. This forces reloads in the dirCache until we
// succeed.
func newDirnameMap(fs pathfs.FileSystem, dir string) map[string]bool {
stream, code := fs.OpenDir(dir, nil)
if code == fuse.ENOENT {
// The directory not existing is not an error.
return map[string]bool{}
}
if !code.Ok() {
return nil
}
result := make(map[string]bool)
for _, e := range stream {
if e.Mode&fuse.S_IFREG != 0 {
result[e.Name] = true
}
}
return result
}
func (s *fuseTestSuite) TestDirError() {
datasetName := "TestDirError"
str := spec.CreateValueSpecString("ldb", s.LdbDir, datasetName)
var testfs pathfs.FileSystem
start(str, func(fs pathfs.FileSystem) { testfs = fs })
code := testfs.Mkdir("foo/bar", 0755, nil)
assert.Equal(s.T(), fuse.ENOENT, code)
_, code = testfs.Create("foo", uint32(os.O_CREATE)|uint32(os.O_WRONLY), 0644, nil)
assert.Equal(s.T(), fuse.OK, code)
code = testfs.Mkdir("foo/bar", 0755, nil)
assert.Equal(s.T(), fuse.ENOTDIR, code)
_, code = testfs.OpenDir("foo", nil)
assert.Equal(s.T(), fuse.ENOTDIR, code)
}
func (s *fuseTestSuite) TestHierarchy() {
datasetName := "TestHierarchy"
str := spec.CreateValueSpecString("ldb", s.LdbDir, datasetName)
var testfs pathfs.FileSystem
start(str, func(fs pathfs.FileSystem) { testfs = fs })
hierarchy := []string{
"bin/",
"bin/sh",
"usr/",
"usr/bin/",
"usr/bin/cat",
"usr/bin/bash",
"usr/lib/",
"usr/lib/libc.so.1",
"usr/dict/",
"usr/dict/words",
"usr/dict/words2",
}
for _, path := range hierarchy {
if ll := len(path); path[ll-1] == '/' {
code := testfs.Mkdir(path[:ll-1], 0555, nil)
assert.Equal(s.T(), fuse.OK, code)
} else {
_, code := testfs.Create(path, uint32(os.O_CREATE)|uint32(os.O_WRONLY), 0444, nil)
assert.Equal(s.T(), fuse.OK, code)
}
}
h := find(testfs)
sort.Strings(hierarchy)
sort.Strings(h)
assert.Equal(s.T(), hierarchy, h)
}
func (s *fuseTestSuite) TestMultipleOpens() {
datasetName := "TestMultipleOpens"
str := spec.CreateValueSpecString("ldb", s.LdbDir, datasetName)
var testfs pathfs.FileSystem
start(str, func(fs pathfs.FileSystem) { testfs = fs })
file1, code := testfs.Create("contend", uint32(os.O_CREATE|os.O_RDWR), 0644, nil)
assert.Equal(s.T(), fuse.OK, code)
file2, code := testfs.Open("contend", uint32(os.O_RDWR), nil)
assert.Equal(s.T(), fuse.OK, code)
file1.Write([]byte("abc contact"), 0)
file2.Write([]byte("321"), 0)
data := make([]byte, 11)
rr, code := file1.Read(data, 0)
assert.Equal(s.T(), fuse.OK, code)
assert.Equal(s.T(), 11, rr.Size())
assert.Equal(s.T(), "321 contact", string(data))
}
func (s *fuseTestSuite) TestBigFile() {
datasetName := "TestBigFile"
str := spec.CreateValueSpecString("ldb", s.LdbDir, datasetName)
var testfs pathfs.FileSystem
start(str, func(fs pathfs.FileSystem) { testfs = fs })
size := uint64(10 * 1024) // 10KB
data := make([]byte, size)
buf := bytes.NewBuffer(data)
for uint64(buf.Len()) < size {
buf.WriteString("All work and no play makes Jack a dull boy.\n")
}
file, code := testfs.Create("shining.txt", uint32(os.O_CREATE|os.O_RDWR), 0644, nil)
assert.Equal(s.T(), fuse.OK, code)
n, code := file.Write(buf.Bytes(), 0)
assert.Equal(s.T(), uint32(size), n)
assertAttr(s, testfs, "shining.txt", 0644|fuse.S_IFREG, size)
}
func (s *fuseTestSuite) TestOverwrite() {
datasetName := "TestOverwrite"
str := spec.CreateValueSpecString("ldb", s.LdbDir, datasetName)
var testfs pathfs.FileSystem
start(str, func(fs pathfs.FileSystem) { testfs = fs })
file, code := testfs.Create("proclamation", uint32(os.O_CREATE|os.O_RDWR), 0644, nil)
assert.Equal(s.T(), fuse.OK, code)
n, code := file.Write([]byte("Four score and seven years ago..."), 0)
assert.Equal(s.T(), uint32(33), n)
assertAttr(s, testfs, "proclamation", 0644|fuse.S_IFREG, 33)
n, code = file.Write([]byte("beers"), 21)
assert.Equal(s.T(), uint32(5), n)
assertAttr(s, testfs, "proclamation", 0644|fuse.S_IFREG, 33)
data := make([]byte, 33)
rr, code := file.Read(data, 0)
assert.Equal(s.T(), fuse.OK, code)
assert.Equal(s.T(), 33, rr.Size())
assert.Equal(s.T(), "Four score and seven beers ago...", string(data))
}
func (s *fuseTestSuite) TestRenameWhileOpen() {
datasetName := "TestRenameWhileOpen"
str := spec.CreateValueSpecString("ldb", s.LdbDir, datasetName)
var testfs pathfs.FileSystem
start(str, func(fs pathfs.FileSystem) { testfs = fs })
code := testfs.Mkdir("foo", 0755, nil)
assert.Equal(s.T(), fuse.OK, code)
code = testfs.Mkdir("foo/bar", 0755, nil)
assert.Equal(s.T(), fuse.OK, code)
file, code := testfs.Create("foo/bar/file.txt", uint32(os.O_CREATE)|uint32(os.O_WRONLY), 0644, nil)
assert.Equal(s.T(), fuse.OK, code)
// Validate renaming a file between opening it and writing to it.
code = testfs.Rename("foo/bar/file.txt", "file.txt", nil)
assert.Equal(s.T(), fuse.OK, code)
n, code := file.Write([]byte("howdy!"), 0)
assert.Equal(s.T(), uint32(6), n)
assert.Equal(s.T(), fuse.OK, code)
assertAttr(s, testfs, "file.txt", 0644|fuse.S_IFREG, 6)
}
func (s *fuseTestSuite) TestFileInDir() {
datasetName := "TestFile"
str := spec.CreateValueSpecString("ldb", s.LdbDir, datasetName)
var testfs pathfs.FileSystem
start(str, func(fs pathfs.FileSystem) { testfs = fs })
code := testfs.Mkdir("usr", 0555, nil)
assert.Equal(s.T(), fuse.OK, code)
code = testfs.Mkdir("usr/sbin", 0555, nil)
assert.Equal(s.T(), fuse.OK, code)
_, code = testfs.Create("usr/sbin/dtrace", uint32(os.O_CREATE)|uint32(os.O_WRONLY), 0555, nil)
assert.Equal(s.T(), fuse.OK, code)
assertAttr(s, testfs, "usr", 0555|fuse.S_IFDIR, 1)
assertAttr(s, testfs, "usr/sbin", 0555|fuse.S_IFDIR, 1)
assertAttr(s, testfs, "usr/sbin/dtrace", 0555|fuse.S_IFREG, 0)
}