1152 lines
26 KiB
Go
1152 lines
26 KiB
Go
// Copyright 2015 Google Inc. All Rights Reserved.
|
|
//
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package memfs_test
|
|
|
|
import (
|
|
"io"
|
|
"io/ioutil"
|
|
"log"
|
|
"os"
|
|
"os/user"
|
|
"path"
|
|
"strconv"
|
|
"strings"
|
|
"syscall"
|
|
"testing"
|
|
"time"
|
|
|
|
"github.com/jacobsa/fuse"
|
|
"github.com/jacobsa/fuse/fusetesting"
|
|
"github.com/jacobsa/fuse/samples/memfs"
|
|
"github.com/jacobsa/gcsfuse/timeutil"
|
|
. "github.com/jacobsa/oglematchers"
|
|
. "github.com/jacobsa/ogletest"
|
|
"golang.org/x/net/context"
|
|
)
|
|
|
|
func TestMemFS(t *testing.T) { RunTests(t) }
|
|
|
|
////////////////////////////////////////////////////////////////////////
|
|
// Helpers
|
|
////////////////////////////////////////////////////////////////////////
|
|
|
|
func currentUid() uint32 {
|
|
user, err := user.Current()
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
|
|
uid, err := strconv.ParseUint(user.Uid, 10, 32)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
|
|
return uint32(uid)
|
|
}
|
|
|
|
func currentGid() uint32 {
|
|
user, err := user.Current()
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
|
|
gid, err := strconv.ParseUint(user.Gid, 10, 32)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
|
|
return uint32(gid)
|
|
}
|
|
|
|
// Transform the supplied mode by the current umask.
|
|
func applyUmask(m os.FileMode) os.FileMode {
|
|
// HACK(jacobsa): Use umask(2) to change and restore the umask in order to
|
|
// figure out what the mask is. See the listing in `man getumask`.
|
|
umask := syscall.Umask(0)
|
|
syscall.Umask(umask)
|
|
|
|
// Apply it.
|
|
return m &^ os.FileMode(umask)
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////
|
|
// Boilerplate
|
|
////////////////////////////////////////////////////////////////////////
|
|
|
|
type MemFSTest struct {
|
|
clock timeutil.SimulatedClock
|
|
mfs *fuse.MountedFileSystem
|
|
|
|
// Files to close when tearing down. Nil entries are skipped.
|
|
toClose []io.Closer
|
|
}
|
|
|
|
var _ SetUpInterface = &MemFSTest{}
|
|
var _ TearDownInterface = &MemFSTest{}
|
|
|
|
func init() { RegisterTestSuite(&MemFSTest{}) }
|
|
|
|
func (t *MemFSTest) SetUp(ti *TestInfo) {
|
|
var err error
|
|
|
|
// Set up a fixed, non-zero time.
|
|
t.clock.SetTime(time.Now())
|
|
|
|
// Set up a temporary directory for mounting.
|
|
mountPoint, err := ioutil.TempDir("", "memfs_test")
|
|
if err != nil {
|
|
panic("ioutil.TempDir: " + err.Error())
|
|
}
|
|
|
|
// Mount a file system.
|
|
fs := memfs.NewMemFS(currentUid(), currentGid(), &t.clock)
|
|
if t.mfs, err = fuse.Mount(mountPoint, fs); err != nil {
|
|
panic("Mount: " + err.Error())
|
|
}
|
|
|
|
if err = t.mfs.WaitForReady(context.Background()); err != nil {
|
|
panic("MountedFileSystem.WaitForReady: " + err.Error())
|
|
}
|
|
}
|
|
|
|
func (t *MemFSTest) TearDown() {
|
|
// Close any files we opened.
|
|
for _, c := range t.toClose {
|
|
if c == nil {
|
|
continue
|
|
}
|
|
|
|
err := c.Close()
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
}
|
|
|
|
// Unmount the file system. Try again on "resource busy" errors.
|
|
delay := 10 * time.Millisecond
|
|
for {
|
|
err := t.mfs.Unmount()
|
|
if err == nil {
|
|
break
|
|
}
|
|
|
|
if strings.Contains(err.Error(), "resource busy") {
|
|
log.Println("Resource busy error while unmounting; trying again")
|
|
time.Sleep(delay)
|
|
delay = time.Duration(1.3 * float64(delay))
|
|
continue
|
|
}
|
|
|
|
panic("MountedFileSystem.Unmount: " + err.Error())
|
|
}
|
|
|
|
if err := t.mfs.Join(context.Background()); err != nil {
|
|
panic("MountedFileSystem.Join: " + err.Error())
|
|
}
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////
|
|
// Test functions
|
|
////////////////////////////////////////////////////////////////////////
|
|
|
|
func (t *MemFSTest) ContentsOfEmptyFileSystem() {
|
|
entries, err := ioutil.ReadDir(t.mfs.Dir())
|
|
|
|
AssertEq(nil, err)
|
|
ExpectThat(entries, ElementsAre())
|
|
}
|
|
|
|
func (t *MemFSTest) Mkdir_OneLevel() {
|
|
var err error
|
|
var fi os.FileInfo
|
|
var stat *syscall.Stat_t
|
|
var entries []os.FileInfo
|
|
|
|
dirName := path.Join(t.mfs.Dir(), "dir")
|
|
|
|
// Simulate time advancing.
|
|
t.clock.AdvanceTime(time.Second)
|
|
|
|
// Create a directory within the root.
|
|
createTime := t.clock.Now()
|
|
err = os.Mkdir(dirName, 0754)
|
|
AssertEq(nil, err)
|
|
|
|
// Simulate time advancing.
|
|
t.clock.AdvanceTime(time.Second)
|
|
|
|
// Stat the directory.
|
|
fi, err = os.Stat(dirName)
|
|
stat = fi.Sys().(*syscall.Stat_t)
|
|
|
|
AssertEq(nil, err)
|
|
ExpectEq("dir", fi.Name())
|
|
ExpectEq(0, fi.Size())
|
|
ExpectEq(os.ModeDir|applyUmask(0754), fi.Mode())
|
|
ExpectThat(fi, fusetesting.MtimeIs(createTime))
|
|
ExpectThat(fi, fusetesting.BirthtimeIs(createTime))
|
|
ExpectTrue(fi.IsDir())
|
|
|
|
ExpectNe(0, stat.Ino)
|
|
ExpectEq(1, stat.Nlink)
|
|
ExpectEq(currentUid(), stat.Uid)
|
|
ExpectEq(currentGid(), stat.Gid)
|
|
ExpectEq(0, stat.Size)
|
|
|
|
// Check the root's mtime.
|
|
fi, err = os.Stat(t.mfs.Dir())
|
|
|
|
AssertEq(nil, err)
|
|
ExpectEq(0, fi.ModTime().Sub(createTime))
|
|
|
|
// Read the directory.
|
|
entries, err = ioutil.ReadDir(dirName)
|
|
|
|
AssertEq(nil, err)
|
|
ExpectThat(entries, ElementsAre())
|
|
|
|
// Read the root.
|
|
entries, err = ioutil.ReadDir(t.mfs.Dir())
|
|
|
|
AssertEq(nil, err)
|
|
AssertEq(1, len(entries))
|
|
|
|
fi = entries[0]
|
|
ExpectEq("dir", fi.Name())
|
|
ExpectEq(os.ModeDir|applyUmask(0754), fi.Mode())
|
|
}
|
|
|
|
func (t *MemFSTest) Mkdir_TwoLevels() {
|
|
var err error
|
|
var fi os.FileInfo
|
|
var stat *syscall.Stat_t
|
|
var entries []os.FileInfo
|
|
|
|
// Create a directory within the root.
|
|
err = os.Mkdir(path.Join(t.mfs.Dir(), "parent"), 0700)
|
|
AssertEq(nil, err)
|
|
|
|
// Simulate time advancing.
|
|
t.clock.AdvanceTime(time.Second)
|
|
|
|
// Create a child of that directory.
|
|
createTime := t.clock.Now()
|
|
err = os.Mkdir(path.Join(t.mfs.Dir(), "parent/dir"), 0754)
|
|
AssertEq(nil, err)
|
|
|
|
// Simulate time advancing.
|
|
t.clock.AdvanceTime(time.Second)
|
|
|
|
// Stat the directory.
|
|
fi, err = os.Stat(path.Join(t.mfs.Dir(), "parent/dir"))
|
|
stat = fi.Sys().(*syscall.Stat_t)
|
|
|
|
AssertEq(nil, err)
|
|
ExpectEq("dir", fi.Name())
|
|
ExpectEq(0, fi.Size())
|
|
ExpectEq(os.ModeDir|applyUmask(0754), fi.Mode())
|
|
ExpectThat(fi, fusetesting.MtimeIs(createTime))
|
|
ExpectThat(fi, fusetesting.BirthtimeIs(createTime))
|
|
ExpectTrue(fi.IsDir())
|
|
|
|
ExpectNe(0, stat.Ino)
|
|
ExpectEq(1, stat.Nlink)
|
|
ExpectEq(currentUid(), stat.Uid)
|
|
ExpectEq(currentGid(), stat.Gid)
|
|
ExpectEq(0, stat.Size)
|
|
|
|
// Check the parent's mtime.
|
|
fi, err = os.Stat(path.Join(t.mfs.Dir(), "parent"))
|
|
AssertEq(nil, err)
|
|
ExpectEq(0, fi.ModTime().Sub(createTime))
|
|
|
|
// Read the directory.
|
|
entries, err = ioutil.ReadDir(path.Join(t.mfs.Dir(), "parent/dir"))
|
|
|
|
AssertEq(nil, err)
|
|
ExpectThat(entries, ElementsAre())
|
|
|
|
// Read the parent.
|
|
entries, err = ioutil.ReadDir(path.Join(t.mfs.Dir(), "parent"))
|
|
|
|
AssertEq(nil, err)
|
|
AssertEq(1, len(entries))
|
|
|
|
fi = entries[0]
|
|
ExpectEq("dir", fi.Name())
|
|
ExpectEq(os.ModeDir|applyUmask(0754), fi.Mode())
|
|
}
|
|
|
|
func (t *MemFSTest) Mkdir_AlreadyExists() {
|
|
var err error
|
|
dirName := path.Join(t.mfs.Dir(), "dir")
|
|
|
|
// Create the directory once.
|
|
err = os.Mkdir(dirName, 0754)
|
|
AssertEq(nil, err)
|
|
|
|
// Attempt to create it again.
|
|
err = os.Mkdir(dirName, 0754)
|
|
|
|
AssertNe(nil, err)
|
|
ExpectThat(err, Error(HasSubstr("exists")))
|
|
}
|
|
|
|
func (t *MemFSTest) Mkdir_IntermediateIsFile() {
|
|
var err error
|
|
|
|
// Create a file.
|
|
fileName := path.Join(t.mfs.Dir(), "foo")
|
|
err = ioutil.WriteFile(fileName, []byte{}, 0700)
|
|
AssertEq(nil, err)
|
|
|
|
// Attempt to create a directory within the file.
|
|
dirName := path.Join(fileName, "dir")
|
|
err = os.Mkdir(dirName, 0754)
|
|
|
|
AssertNe(nil, err)
|
|
ExpectThat(err, Error(HasSubstr("not a directory")))
|
|
}
|
|
|
|
func (t *MemFSTest) Mkdir_IntermediateIsNonExistent() {
|
|
var err error
|
|
|
|
// Attempt to create a sub-directory of a non-existent sub-directory.
|
|
dirName := path.Join(t.mfs.Dir(), "foo/dir")
|
|
err = os.Mkdir(dirName, 0754)
|
|
|
|
AssertNe(nil, err)
|
|
ExpectThat(err, Error(HasSubstr("no such file or directory")))
|
|
}
|
|
|
|
func (t *MemFSTest) Mkdir_PermissionDenied() {
|
|
var err error
|
|
|
|
// Create a directory within the root without write permissions.
|
|
err = os.Mkdir(path.Join(t.mfs.Dir(), "parent"), 0500)
|
|
AssertEq(nil, err)
|
|
|
|
// Attempt to create a child of that directory.
|
|
err = os.Mkdir(path.Join(t.mfs.Dir(), "parent/dir"), 0754)
|
|
|
|
AssertNe(nil, err)
|
|
ExpectThat(err, Error(HasSubstr("permission denied")))
|
|
}
|
|
|
|
func (t *MemFSTest) CreateNewFile_InRoot() {
|
|
var err error
|
|
var fi os.FileInfo
|
|
var stat *syscall.Stat_t
|
|
|
|
// Write a file.
|
|
fileName := path.Join(t.mfs.Dir(), "foo")
|
|
const contents = "Hello\x00world"
|
|
|
|
createTime := t.clock.Now()
|
|
err = ioutil.WriteFile(fileName, []byte(contents), 0400)
|
|
AssertEq(nil, err)
|
|
|
|
// Simulate time advancing.
|
|
t.clock.AdvanceTime(time.Second)
|
|
|
|
// Stat it.
|
|
fi, err = os.Stat(fileName)
|
|
stat = fi.Sys().(*syscall.Stat_t)
|
|
|
|
AssertEq(nil, err)
|
|
ExpectEq("foo", fi.Name())
|
|
ExpectEq(len(contents), fi.Size())
|
|
ExpectEq(applyUmask(0400), fi.Mode())
|
|
ExpectThat(fi, fusetesting.MtimeIs(createTime))
|
|
ExpectThat(fi, fusetesting.BirthtimeIs(createTime))
|
|
ExpectFalse(fi.IsDir())
|
|
|
|
ExpectNe(0, stat.Ino)
|
|
ExpectEq(1, stat.Nlink)
|
|
ExpectEq(currentUid(), stat.Uid)
|
|
ExpectEq(currentGid(), stat.Gid)
|
|
ExpectEq(len(contents), stat.Size)
|
|
|
|
// Read it back.
|
|
slice, err := ioutil.ReadFile(fileName)
|
|
AssertEq(nil, err)
|
|
ExpectEq(contents, string(slice))
|
|
}
|
|
|
|
func (t *MemFSTest) CreateNewFile_InSubDir() {
|
|
var err error
|
|
var fi os.FileInfo
|
|
var stat *syscall.Stat_t
|
|
|
|
// Create a sub-dir.
|
|
dirName := path.Join(t.mfs.Dir(), "dir")
|
|
err = os.Mkdir(dirName, 0700)
|
|
AssertEq(nil, err)
|
|
|
|
// Write a file.
|
|
fileName := path.Join(dirName, "foo")
|
|
const contents = "Hello\x00world"
|
|
|
|
createTime := t.clock.Now()
|
|
err = ioutil.WriteFile(fileName, []byte(contents), 0400)
|
|
AssertEq(nil, err)
|
|
|
|
// Simulate time advancing.
|
|
t.clock.AdvanceTime(time.Second)
|
|
|
|
// Stat it.
|
|
fi, err = os.Stat(fileName)
|
|
stat = fi.Sys().(*syscall.Stat_t)
|
|
|
|
AssertEq(nil, err)
|
|
ExpectEq("foo", fi.Name())
|
|
ExpectEq(len(contents), fi.Size())
|
|
ExpectEq(applyUmask(0400), fi.Mode())
|
|
ExpectThat(fi, fusetesting.MtimeIs(createTime))
|
|
ExpectThat(fi, fusetesting.BirthtimeIs(createTime))
|
|
ExpectFalse(fi.IsDir())
|
|
|
|
ExpectNe(0, stat.Ino)
|
|
ExpectEq(1, stat.Nlink)
|
|
ExpectEq(currentUid(), stat.Uid)
|
|
ExpectEq(currentGid(), stat.Gid)
|
|
ExpectEq(len(contents), stat.Size)
|
|
|
|
// Read it back.
|
|
slice, err := ioutil.ReadFile(fileName)
|
|
AssertEq(nil, err)
|
|
ExpectEq(contents, string(slice))
|
|
}
|
|
|
|
func (t *MemFSTest) ModifyExistingFile_InRoot() {
|
|
var err error
|
|
var n int
|
|
var fi os.FileInfo
|
|
var stat *syscall.Stat_t
|
|
|
|
// Write a file.
|
|
fileName := path.Join(t.mfs.Dir(), "foo")
|
|
|
|
createTime := t.clock.Now()
|
|
err = ioutil.WriteFile(fileName, []byte("Jello, world!"), 0600)
|
|
AssertEq(nil, err)
|
|
|
|
// Simulate time advancing.
|
|
t.clock.AdvanceTime(time.Second)
|
|
|
|
// Open the file and modify it.
|
|
f, err := os.OpenFile(fileName, os.O_WRONLY, 0400)
|
|
t.toClose = append(t.toClose, f)
|
|
AssertEq(nil, err)
|
|
|
|
modifyTime := t.clock.Now()
|
|
n, err = f.WriteAt([]byte("H"), 0)
|
|
AssertEq(nil, err)
|
|
AssertEq(1, n)
|
|
|
|
// Simulate time advancing.
|
|
t.clock.AdvanceTime(time.Second)
|
|
|
|
// Stat the file.
|
|
fi, err = os.Stat(fileName)
|
|
stat = fi.Sys().(*syscall.Stat_t)
|
|
|
|
AssertEq(nil, err)
|
|
ExpectEq("foo", fi.Name())
|
|
ExpectEq(len("Hello, world!"), fi.Size())
|
|
ExpectEq(applyUmask(0600), fi.Mode())
|
|
ExpectThat(fi, fusetesting.MtimeIs(modifyTime))
|
|
ExpectThat(fi, fusetesting.BirthtimeIs(createTime))
|
|
ExpectFalse(fi.IsDir())
|
|
|
|
ExpectNe(0, stat.Ino)
|
|
ExpectEq(1, stat.Nlink)
|
|
ExpectEq(currentUid(), stat.Uid)
|
|
ExpectEq(currentGid(), stat.Gid)
|
|
ExpectEq(len("Hello, world!"), stat.Size)
|
|
|
|
// Read the file back.
|
|
slice, err := ioutil.ReadFile(fileName)
|
|
AssertEq(nil, err)
|
|
ExpectEq("Hello, world!", string(slice))
|
|
}
|
|
|
|
func (t *MemFSTest) ModifyExistingFile_InSubDir() {
|
|
var err error
|
|
var n int
|
|
var fi os.FileInfo
|
|
var stat *syscall.Stat_t
|
|
|
|
// Create a sub-directory.
|
|
dirName := path.Join(t.mfs.Dir(), "dir")
|
|
err = os.Mkdir(dirName, 0700)
|
|
AssertEq(nil, err)
|
|
|
|
// Write a file.
|
|
fileName := path.Join(dirName, "foo")
|
|
|
|
createTime := t.clock.Now()
|
|
err = ioutil.WriteFile(fileName, []byte("Jello, world!"), 0600)
|
|
AssertEq(nil, err)
|
|
|
|
// Simulate time advancing.
|
|
t.clock.AdvanceTime(time.Second)
|
|
|
|
// Open the file and modify it.
|
|
f, err := os.OpenFile(fileName, os.O_WRONLY, 0400)
|
|
t.toClose = append(t.toClose, f)
|
|
AssertEq(nil, err)
|
|
|
|
modifyTime := t.clock.Now()
|
|
n, err = f.WriteAt([]byte("H"), 0)
|
|
AssertEq(nil, err)
|
|
AssertEq(1, n)
|
|
|
|
// Simulate time advancing.
|
|
t.clock.AdvanceTime(time.Second)
|
|
|
|
// Stat the file.
|
|
fi, err = os.Stat(fileName)
|
|
stat = fi.Sys().(*syscall.Stat_t)
|
|
|
|
AssertEq(nil, err)
|
|
ExpectEq("foo", fi.Name())
|
|
ExpectEq(len("Hello, world!"), fi.Size())
|
|
ExpectEq(applyUmask(0600), fi.Mode())
|
|
ExpectThat(fi, fusetesting.MtimeIs(modifyTime))
|
|
ExpectThat(fi, fusetesting.BirthtimeIs(createTime))
|
|
ExpectFalse(fi.IsDir())
|
|
|
|
ExpectNe(0, stat.Ino)
|
|
ExpectEq(1, stat.Nlink)
|
|
ExpectEq(currentUid(), stat.Uid)
|
|
ExpectEq(currentGid(), stat.Gid)
|
|
ExpectEq(len("Hello, world!"), stat.Size)
|
|
|
|
// Read the file back.
|
|
slice, err := ioutil.ReadFile(fileName)
|
|
AssertEq(nil, err)
|
|
ExpectEq("Hello, world!", string(slice))
|
|
}
|
|
|
|
func (t *MemFSTest) UnlinkFile_Exists() {
|
|
var err error
|
|
|
|
// Write a file.
|
|
fileName := path.Join(t.mfs.Dir(), "foo")
|
|
err = ioutil.WriteFile(fileName, []byte("Jello, world!"), 0600)
|
|
AssertEq(nil, err)
|
|
|
|
// Unlink it.
|
|
err = os.Remove(fileName)
|
|
AssertEq(nil, err)
|
|
|
|
// Statting it should fail.
|
|
_, err = os.Stat(fileName)
|
|
|
|
AssertNe(nil, err)
|
|
ExpectThat(err, Error(HasSubstr("no such file")))
|
|
|
|
// Nothing should be in the directory.
|
|
entries, err := ioutil.ReadDir(t.mfs.Dir())
|
|
AssertEq(nil, err)
|
|
ExpectThat(entries, ElementsAre())
|
|
}
|
|
|
|
func (t *MemFSTest) UnlinkFile_NonExistent() {
|
|
err := os.Remove(path.Join(t.mfs.Dir(), "foo"))
|
|
|
|
AssertNe(nil, err)
|
|
ExpectThat(err, Error(HasSubstr("no such file")))
|
|
}
|
|
|
|
func (t *MemFSTest) UnlinkFile_StillOpen() {
|
|
fileName := path.Join(t.mfs.Dir(), "foo")
|
|
|
|
// Create and open a file.
|
|
f, err := os.OpenFile(fileName, os.O_RDWR|os.O_CREATE, 0600)
|
|
t.toClose = append(t.toClose, f)
|
|
AssertEq(nil, err)
|
|
|
|
// Write some data into it.
|
|
n, err := f.Write([]byte("taco"))
|
|
AssertEq(nil, err)
|
|
AssertEq(4, n)
|
|
|
|
// Unlink it.
|
|
err = os.Remove(fileName)
|
|
AssertEq(nil, err)
|
|
|
|
// The directory should no longer contain it.
|
|
entries, err := ioutil.ReadDir(t.mfs.Dir())
|
|
AssertEq(nil, err)
|
|
ExpectThat(entries, ElementsAre())
|
|
|
|
// We should be able to stat the file. It should still show as having
|
|
// contents, but with no links.
|
|
fi, err := f.Stat()
|
|
|
|
AssertEq(nil, err)
|
|
ExpectEq(4, fi.Size())
|
|
// TODO(jacobsa): Re-enable this assertion if the following issue is fixed:
|
|
// https://github.com/bazillion/fuse/issues/66
|
|
// ExpectEq(0, fi.Sys().(*syscall.Stat_t).Nlink)
|
|
|
|
// The contents should still be available.
|
|
buf := make([]byte, 1024)
|
|
n, err = f.ReadAt(buf, 0)
|
|
|
|
AssertEq(io.EOF, err)
|
|
AssertEq(4, n)
|
|
ExpectEq("taco", string(buf[:4]))
|
|
|
|
// Writing should still work, too.
|
|
n, err = f.Write([]byte("burrito"))
|
|
AssertEq(nil, err)
|
|
AssertEq(len("burrito"), n)
|
|
}
|
|
|
|
func (t *MemFSTest) Rmdir_NonEmpty() {
|
|
var err error
|
|
|
|
// Create two levels of directories.
|
|
err = os.MkdirAll(path.Join(t.mfs.Dir(), "foo/bar"), 0754)
|
|
AssertEq(nil, err)
|
|
|
|
// Attempt to remove the parent.
|
|
err = os.Remove(path.Join(t.mfs.Dir(), "foo"))
|
|
|
|
AssertNe(nil, err)
|
|
ExpectThat(err, Error(HasSubstr("not empty")))
|
|
}
|
|
|
|
func (t *MemFSTest) Rmdir_Empty() {
|
|
var err error
|
|
var entries []os.FileInfo
|
|
|
|
// Create two levels of directories.
|
|
err = os.MkdirAll(path.Join(t.mfs.Dir(), "foo/bar"), 0754)
|
|
AssertEq(nil, err)
|
|
|
|
// Simulate time advancing.
|
|
t.clock.AdvanceTime(time.Second)
|
|
|
|
// Remove the leaf.
|
|
rmTime := t.clock.Now()
|
|
err = os.Remove(path.Join(t.mfs.Dir(), "foo/bar"))
|
|
AssertEq(nil, err)
|
|
|
|
// Simulate time advancing.
|
|
t.clock.AdvanceTime(time.Second)
|
|
|
|
// There should be nothing left in the parent.
|
|
entries, err = ioutil.ReadDir(path.Join(t.mfs.Dir(), "foo"))
|
|
|
|
AssertEq(nil, err)
|
|
ExpectThat(entries, ElementsAre())
|
|
|
|
// Check the parent's mtime.
|
|
fi, err := os.Stat(path.Join(t.mfs.Dir(), "foo"))
|
|
AssertEq(nil, err)
|
|
ExpectEq(0, fi.ModTime().Sub(rmTime))
|
|
|
|
// Remove the parent.
|
|
err = os.Remove(path.Join(t.mfs.Dir(), "foo"))
|
|
AssertEq(nil, err)
|
|
|
|
// Now the root directory should be empty, too.
|
|
entries, err = ioutil.ReadDir(t.mfs.Dir())
|
|
|
|
AssertEq(nil, err)
|
|
ExpectThat(entries, ElementsAre())
|
|
}
|
|
|
|
func (t *MemFSTest) Rmdir_NonExistent() {
|
|
err := os.Remove(path.Join(t.mfs.Dir(), "blah"))
|
|
|
|
AssertNe(nil, err)
|
|
ExpectThat(err, Error(HasSubstr("no such file or directory")))
|
|
}
|
|
|
|
func (t *MemFSTest) Rmdir_OpenedForReading() {
|
|
var err error
|
|
|
|
// Create a directory.
|
|
createTime := t.clock.Now()
|
|
err = os.Mkdir(path.Join(t.mfs.Dir(), "dir"), 0700)
|
|
AssertEq(nil, err)
|
|
|
|
// Simulate time advancing.
|
|
t.clock.AdvanceTime(time.Second)
|
|
|
|
// Open the directory for reading.
|
|
f, err := os.Open(path.Join(t.mfs.Dir(), "dir"))
|
|
defer func() {
|
|
if f != nil {
|
|
ExpectEq(nil, f.Close())
|
|
}
|
|
}()
|
|
|
|
AssertEq(nil, err)
|
|
|
|
// Remove the directory.
|
|
err = os.Remove(path.Join(t.mfs.Dir(), "dir"))
|
|
AssertEq(nil, err)
|
|
|
|
// Create a new directory, with the same name even, and add some contents
|
|
// within it.
|
|
err = os.MkdirAll(path.Join(t.mfs.Dir(), "dir/foo"), 0700)
|
|
AssertEq(nil, err)
|
|
|
|
err = os.MkdirAll(path.Join(t.mfs.Dir(), "dir/bar"), 0700)
|
|
AssertEq(nil, err)
|
|
|
|
err = os.MkdirAll(path.Join(t.mfs.Dir(), "dir/baz"), 0700)
|
|
AssertEq(nil, err)
|
|
|
|
// We should still be able to stat the open file handle. It should show up as
|
|
// unlinked.
|
|
fi, err := f.Stat()
|
|
|
|
ExpectEq("dir", fi.Name())
|
|
ExpectEq(0, fi.ModTime().Sub(createTime))
|
|
|
|
// TODO(jacobsa): Re-enable this assertion if the following issue is fixed:
|
|
// https://github.com/bazillion/fuse/issues/66
|
|
// ExpectEq(0, fi.Sys().(*syscall.Stat_t).Nlink)
|
|
|
|
// Attempt to read from the directory. This should succeed even though it has
|
|
// been unlinked, and we shouldn't see any junk from the new directory.
|
|
entries, err := f.Readdir(0)
|
|
|
|
AssertEq(nil, err)
|
|
ExpectThat(entries, ElementsAre())
|
|
}
|
|
|
|
func (t *MemFSTest) CaseSensitive() {
|
|
var err error
|
|
|
|
// Create a file.
|
|
err = ioutil.WriteFile(path.Join(t.mfs.Dir(), "file"), []byte{}, 0400)
|
|
AssertEq(nil, err)
|
|
|
|
// Create a directory.
|
|
err = os.Mkdir(path.Join(t.mfs.Dir(), "dir"), 0400)
|
|
AssertEq(nil, err)
|
|
|
|
// Attempt to stat with the wrong case.
|
|
names := []string{
|
|
"FILE",
|
|
"File",
|
|
"filE",
|
|
"DIR",
|
|
"Dir",
|
|
"dIr",
|
|
}
|
|
|
|
for _, name := range names {
|
|
_, err = os.Stat(path.Join(t.mfs.Dir(), name))
|
|
AssertNe(nil, err, "Name: %s", name)
|
|
AssertThat(err, Error(HasSubstr("no such file or directory")))
|
|
}
|
|
}
|
|
|
|
func (t *MemFSTest) WriteOverlapsEndOfFile() {
|
|
var err error
|
|
var n int
|
|
|
|
// Create a file.
|
|
f, err := os.Create(path.Join(t.mfs.Dir(), "foo"))
|
|
t.toClose = append(t.toClose, f)
|
|
AssertEq(nil, err)
|
|
|
|
// Make it 4 bytes long.
|
|
err = f.Truncate(4)
|
|
AssertEq(nil, err)
|
|
|
|
// Write the range [2, 6).
|
|
n, err = f.WriteAt([]byte("taco"), 2)
|
|
AssertEq(nil, err)
|
|
AssertEq(4, n)
|
|
|
|
// Read the full contents of the file.
|
|
contents, err := ioutil.ReadAll(f)
|
|
AssertEq(nil, err)
|
|
ExpectEq("\x00\x00taco", string(contents))
|
|
}
|
|
|
|
func (t *MemFSTest) WriteStartsAtEndOfFile() {
|
|
var err error
|
|
var n int
|
|
|
|
// Create a file.
|
|
f, err := os.Create(path.Join(t.mfs.Dir(), "foo"))
|
|
t.toClose = append(t.toClose, f)
|
|
AssertEq(nil, err)
|
|
|
|
// Make it 2 bytes long.
|
|
err = f.Truncate(2)
|
|
AssertEq(nil, err)
|
|
|
|
// Write the range [2, 6).
|
|
n, err = f.WriteAt([]byte("taco"), 2)
|
|
AssertEq(nil, err)
|
|
AssertEq(4, n)
|
|
|
|
// Read the full contents of the file.
|
|
contents, err := ioutil.ReadAll(f)
|
|
AssertEq(nil, err)
|
|
ExpectEq("\x00\x00taco", string(contents))
|
|
}
|
|
|
|
func (t *MemFSTest) WriteStartsPastEndOfFile() {
|
|
var err error
|
|
var n int
|
|
|
|
// Create a file.
|
|
f, err := os.Create(path.Join(t.mfs.Dir(), "foo"))
|
|
t.toClose = append(t.toClose, f)
|
|
AssertEq(nil, err)
|
|
|
|
// Write the range [2, 6).
|
|
n, err = f.WriteAt([]byte("taco"), 2)
|
|
AssertEq(nil, err)
|
|
AssertEq(4, n)
|
|
|
|
// Read the full contents of the file.
|
|
contents, err := ioutil.ReadAll(f)
|
|
AssertEq(nil, err)
|
|
ExpectEq("\x00\x00taco", string(contents))
|
|
}
|
|
|
|
func (t *MemFSTest) WriteAtDoesntChangeOffset_NotAppendMode() {
|
|
var err error
|
|
var n int
|
|
|
|
// Create a file.
|
|
f, err := os.Create(path.Join(t.mfs.Dir(), "foo"))
|
|
t.toClose = append(t.toClose, f)
|
|
AssertEq(nil, err)
|
|
|
|
// Make it 16 bytes long.
|
|
err = f.Truncate(16)
|
|
AssertEq(nil, err)
|
|
|
|
// Seek to offset 4.
|
|
_, err = f.Seek(4, 0)
|
|
AssertEq(nil, err)
|
|
|
|
// Write the range [10, 14).
|
|
n, err = f.WriteAt([]byte("taco"), 2)
|
|
AssertEq(nil, err)
|
|
AssertEq(4, n)
|
|
|
|
// We should still be at offset 4.
|
|
offset, err := getFileOffset(f)
|
|
AssertEq(nil, err)
|
|
ExpectEq(4, offset)
|
|
}
|
|
|
|
func (t *MemFSTest) WriteAtDoesntChangeOffset_AppendMode() {
|
|
var err error
|
|
var n int
|
|
|
|
// Create a file in append mode.
|
|
f, err := os.OpenFile(
|
|
path.Join(t.mfs.Dir(), "foo"),
|
|
os.O_RDWR|os.O_APPEND|os.O_CREATE,
|
|
0600)
|
|
|
|
t.toClose = append(t.toClose, f)
|
|
AssertEq(nil, err)
|
|
|
|
// Make it 16 bytes long.
|
|
err = f.Truncate(16)
|
|
AssertEq(nil, err)
|
|
|
|
// Seek to offset 4.
|
|
_, err = f.Seek(4, 0)
|
|
AssertEq(nil, err)
|
|
|
|
// Write the range [10, 14).
|
|
n, err = f.WriteAt([]byte("taco"), 2)
|
|
AssertEq(nil, err)
|
|
AssertEq(4, n)
|
|
|
|
// We should still be at offset 4.
|
|
offset, err := getFileOffset(f)
|
|
AssertEq(nil, err)
|
|
ExpectEq(4, offset)
|
|
}
|
|
|
|
func (t *MemFSTest) AppendMode() {
|
|
var err error
|
|
var n int
|
|
var off int64
|
|
buf := make([]byte, 1024)
|
|
|
|
// Create a file with some contents.
|
|
fileName := path.Join(t.mfs.Dir(), "foo")
|
|
err = ioutil.WriteFile(fileName, []byte("Jello, "), 0600)
|
|
AssertEq(nil, err)
|
|
|
|
// Open the file in append mode.
|
|
f, err := os.OpenFile(fileName, os.O_RDWR|os.O_APPEND, 0600)
|
|
t.toClose = append(t.toClose, f)
|
|
AssertEq(nil, err)
|
|
|
|
// Seek to somewhere silly and then write.
|
|
off, err = f.Seek(2, 0)
|
|
AssertEq(nil, err)
|
|
AssertEq(2, off)
|
|
|
|
n, err = f.Write([]byte("world!"))
|
|
AssertEq(nil, err)
|
|
AssertEq(6, n)
|
|
|
|
// The offset should have been updated to point at the end of the file.
|
|
off, err = getFileOffset(f)
|
|
AssertEq(nil, err)
|
|
ExpectEq(13, off)
|
|
|
|
// A random write should still work, without updating the offset.
|
|
n, err = f.WriteAt([]byte("H"), 0)
|
|
AssertEq(nil, err)
|
|
AssertEq(1, n)
|
|
|
|
off, err = getFileOffset(f)
|
|
AssertEq(nil, err)
|
|
ExpectEq(13, off)
|
|
|
|
// Read back the contents of the file, which should be correct even though we
|
|
// seeked to a silly place before writing the world part.
|
|
n, err = f.ReadAt(buf, 0)
|
|
AssertEq(io.EOF, err)
|
|
ExpectEq("Hello, world!", string(buf[:n]))
|
|
}
|
|
|
|
func (t *MemFSTest) ReadsPastEndOfFile() {
|
|
var err error
|
|
var n int
|
|
buf := make([]byte, 1024)
|
|
|
|
// Create a file.
|
|
f, err := os.Create(path.Join(t.mfs.Dir(), "foo"))
|
|
t.toClose = append(t.toClose, f)
|
|
AssertEq(nil, err)
|
|
|
|
// Give it some contents.
|
|
n, err = f.Write([]byte("taco"))
|
|
AssertEq(nil, err)
|
|
AssertEq(4, n)
|
|
|
|
// Read a range overlapping EOF.
|
|
n, err = f.ReadAt(buf[:4], 2)
|
|
AssertEq(io.EOF, err)
|
|
ExpectEq(2, n)
|
|
ExpectEq("co", string(buf[:n]))
|
|
|
|
// Read a range starting at EOF.
|
|
n, err = f.ReadAt(buf[:4], 4)
|
|
AssertEq(io.EOF, err)
|
|
ExpectEq(0, n)
|
|
ExpectEq("", string(buf[:n]))
|
|
|
|
// Read a range starting past EOF.
|
|
n, err = f.ReadAt(buf[:4], 100)
|
|
AssertEq(io.EOF, err)
|
|
ExpectEq(0, n)
|
|
ExpectEq("", string(buf[:n]))
|
|
}
|
|
|
|
func (t *MemFSTest) Truncate_Smaller() {
|
|
var err error
|
|
fileName := path.Join(t.mfs.Dir(), "foo")
|
|
|
|
// Create a file.
|
|
err = ioutil.WriteFile(fileName, []byte("taco"), 0600)
|
|
AssertEq(nil, err)
|
|
|
|
// Open it for modification.
|
|
f, err := os.OpenFile(fileName, os.O_RDWR, 0)
|
|
t.toClose = append(t.toClose, f)
|
|
AssertEq(nil, err)
|
|
|
|
// Truncate it.
|
|
err = f.Truncate(2)
|
|
AssertEq(nil, err)
|
|
|
|
// Stat it.
|
|
fi, err := f.Stat()
|
|
AssertEq(nil, err)
|
|
ExpectEq(2, fi.Size())
|
|
|
|
// Read the contents.
|
|
contents, err := ioutil.ReadFile(fileName)
|
|
AssertEq(nil, err)
|
|
ExpectEq("ta", string(contents))
|
|
}
|
|
|
|
func (t *MemFSTest) Truncate_SameSize() {
|
|
var err error
|
|
fileName := path.Join(t.mfs.Dir(), "foo")
|
|
|
|
// Create a file.
|
|
err = ioutil.WriteFile(fileName, []byte("taco"), 0600)
|
|
AssertEq(nil, err)
|
|
|
|
// Open it for modification.
|
|
f, err := os.OpenFile(fileName, os.O_RDWR, 0)
|
|
t.toClose = append(t.toClose, f)
|
|
AssertEq(nil, err)
|
|
|
|
// Truncate it.
|
|
err = f.Truncate(4)
|
|
AssertEq(nil, err)
|
|
|
|
// Stat it.
|
|
fi, err := f.Stat()
|
|
AssertEq(nil, err)
|
|
ExpectEq(4, fi.Size())
|
|
|
|
// Read the contents.
|
|
contents, err := ioutil.ReadFile(fileName)
|
|
AssertEq(nil, err)
|
|
ExpectEq("taco", string(contents))
|
|
}
|
|
|
|
func (t *MemFSTest) Truncate_Larger() {
|
|
var err error
|
|
fileName := path.Join(t.mfs.Dir(), "foo")
|
|
|
|
// Create a file.
|
|
err = ioutil.WriteFile(fileName, []byte("taco"), 0600)
|
|
AssertEq(nil, err)
|
|
|
|
// Open it for modification.
|
|
f, err := os.OpenFile(fileName, os.O_RDWR, 0)
|
|
t.toClose = append(t.toClose, f)
|
|
AssertEq(nil, err)
|
|
|
|
// Truncate it.
|
|
err = f.Truncate(6)
|
|
AssertEq(nil, err)
|
|
|
|
// Stat it.
|
|
fi, err := f.Stat()
|
|
AssertEq(nil, err)
|
|
ExpectEq(6, fi.Size())
|
|
|
|
// Read the contents.
|
|
contents, err := ioutil.ReadFile(fileName)
|
|
AssertEq(nil, err)
|
|
ExpectEq("taco\x00\x00", string(contents))
|
|
}
|
|
|
|
func (t *MemFSTest) Chmod() {
|
|
var err error
|
|
fileName := path.Join(t.mfs.Dir(), "foo")
|
|
|
|
// Create a file.
|
|
err = ioutil.WriteFile(fileName, []byte(""), 0600)
|
|
AssertEq(nil, err)
|
|
|
|
// Chmod it.
|
|
err = os.Chmod(fileName, 0754)
|
|
AssertEq(nil, err)
|
|
|
|
// Stat it.
|
|
fi, err := os.Stat(fileName)
|
|
AssertEq(nil, err)
|
|
ExpectEq(0754, fi.Mode())
|
|
}
|
|
|
|
func (t *MemFSTest) Chtimes() {
|
|
var err error
|
|
fileName := path.Join(t.mfs.Dir(), "foo")
|
|
|
|
// Create a file.
|
|
err = ioutil.WriteFile(fileName, []byte(""), 0600)
|
|
AssertEq(nil, err)
|
|
|
|
// Chtimes it.
|
|
expectedMtime := time.Now().Add(123 * time.Second).Round(time.Second)
|
|
err = os.Chtimes(fileName, time.Now(), expectedMtime)
|
|
AssertEq(nil, err)
|
|
|
|
// Stat it.
|
|
fi, err := os.Stat(fileName)
|
|
AssertEq(nil, err)
|
|
ExpectEq(0, fi.ModTime().Sub(expectedMtime))
|
|
}
|
|
|
|
func (t *MemFSTest) ReadDirWhileModifying() {
|
|
dirName := path.Join(t.mfs.Dir(), "dir")
|
|
createFile := func(name string) {
|
|
AssertEq(nil, ioutil.WriteFile(path.Join(dirName, name), []byte{}, 0400))
|
|
}
|
|
|
|
// Create a directory.
|
|
err := os.Mkdir(dirName, 0700)
|
|
AssertEq(nil, err)
|
|
|
|
// Open the directory.
|
|
d, err := os.Open(dirName)
|
|
t.toClose = append(t.toClose, d)
|
|
AssertEq(nil, err)
|
|
|
|
// Add four files.
|
|
createFile("foo")
|
|
createFile("bar")
|
|
createFile("baz")
|
|
createFile("qux")
|
|
|
|
// Read one entry from the directory.
|
|
names, err := d.Readdirnames(1)
|
|
AssertEq(nil, err)
|
|
AssertThat(names, ElementsAre("foo"))
|
|
|
|
// Make two holes in the directory.
|
|
AssertEq(nil, os.Remove(path.Join(dirName, "foo")))
|
|
AssertEq(nil, os.Remove(path.Join(dirName, "baz")))
|
|
|
|
// Add a bunch of files to the directory.
|
|
createFile("blah_0")
|
|
createFile("blah_1")
|
|
createFile("blah_2")
|
|
createFile("blah_3")
|
|
createFile("blah_4")
|
|
|
|
// Continue reading from the directory, noting the names we see.
|
|
namesSeen := make(map[string]bool)
|
|
for {
|
|
names, err = d.Readdirnames(1)
|
|
for _, n := range names {
|
|
namesSeen[n] = true
|
|
}
|
|
|
|
if err == io.EOF {
|
|
break
|
|
}
|
|
|
|
AssertEq(nil, err)
|
|
}
|
|
|
|
// Posix requires that we should have seen bar and qux, which we didn't
|
|
// delete.
|
|
ExpectTrue(namesSeen["bar"])
|
|
ExpectTrue(namesSeen["qux"])
|
|
}
|