1007 lines
23 KiB
Go
1007 lines
23 KiB
Go
// Copyright 2015 Google Inc. All Rights Reserved.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package flushfs_test
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import (
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"bufio"
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"encoding/hex"
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"fmt"
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"io"
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"os"
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"path"
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"runtime"
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"syscall"
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"testing"
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"unsafe"
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"golang.org/x/sys/unix"
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"github.com/jacobsa/bazilfuse"
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"github.com/jacobsa/fuse/fsutil"
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"github.com/jacobsa/fuse/fusetesting"
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"github.com/jacobsa/fuse/samples"
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. "github.com/jacobsa/oglematchers"
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. "github.com/jacobsa/ogletest"
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)
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func TestFlushFS(t *testing.T) { RunTests(t) }
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////////////////////////////////////////////////////////////////////////
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// Boilerplate
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////////////////////////////////////////////////////////////////////////
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type flushFSTest struct {
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samples.SubprocessTest
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// Files to which mount_sample is writing reported flushes and fsyncs.
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flushes *os.File
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fsyncs *os.File
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// File handles that are closed in TearDown if non-nil.
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f1 *os.File
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f2 *os.File
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}
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func (t *flushFSTest) setUp(
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ti *TestInfo,
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flushErr bazilfuse.Errno,
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fsyncErr bazilfuse.Errno,
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readOnly bool) {
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var err error
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// Set up files to receive flush and fsync reports.
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t.flushes, err = fsutil.AnonymousFile("")
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AssertEq(nil, err)
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t.fsyncs, err = fsutil.AnonymousFile("")
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AssertEq(nil, err)
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// Set up test config.
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t.MountType = "flushfs"
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t.MountFlags = []string{
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"--flushfs.flush_error",
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fmt.Sprintf("%d", int(flushErr)),
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"--flushfs.fsync_error",
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fmt.Sprintf("%d", int(fsyncErr)),
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}
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if readOnly {
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t.MountFlags = append(t.MountFlags, "--read_only")
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}
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t.MountFiles = map[string]*os.File{
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"flushfs.flushes_file": t.flushes,
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"flushfs.fsyncs_file": t.fsyncs,
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}
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t.SubprocessTest.SetUp(ti)
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}
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func (t *flushFSTest) TearDown() {
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// Unlink reporting files.
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os.Remove(t.flushes.Name())
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os.Remove(t.fsyncs.Name())
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// Close reporting files.
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t.flushes.Close()
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t.fsyncs.Close()
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// Close test files if non-nil.
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if t.f1 != nil {
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ExpectEq(nil, t.f1.Close())
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}
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if t.f2 != nil {
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ExpectEq(nil, t.f2.Close())
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}
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// Finish tearing down.
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t.SubprocessTest.TearDown()
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}
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////////////////////////////////////////////////////////////////////////
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// Helpers
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////////////////////////////////////////////////////////////////////////
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var isDarwin = runtime.GOOS == "darwin"
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func readReports(f *os.File) (reports []string, err error) {
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// Seek the file to the start.
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_, err = f.Seek(0, 0)
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if err != nil {
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err = fmt.Errorf("Seek: %v", err)
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return
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}
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// We expect reports to end in a newline (including the final one).
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reader := bufio.NewReader(f)
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for {
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var record []byte
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record, err = reader.ReadBytes('\n')
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if err == io.EOF {
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if len(record) != 0 {
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err = fmt.Errorf("Unexpected record:\n%s", hex.Dump(record))
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return
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}
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err = nil
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return
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}
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if err != nil {
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err = fmt.Errorf("ReadBytes: %v", err)
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return
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}
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// Strip the newline.
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reports = append(reports, string(record[:len(record)-1]))
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}
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}
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// Return a copy of the current contents of t.flushes.
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func (t *flushFSTest) getFlushes() (p []string) {
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var err error
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if p, err = readReports(t.flushes); err != nil {
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panic(err)
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}
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return
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}
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// Return a copy of the current contents of t.fsyncs.
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func (t *flushFSTest) getFsyncs() (p []string) {
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var err error
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if p, err = readReports(t.fsyncs); err != nil {
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panic(err)
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}
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return
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}
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// Like syscall.Dup2, but correctly annotates the syscall as blocking. See here
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// for more info: https://github.com/golang/go/issues/10202
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func dup2(oldfd int, newfd int) (err error) {
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_, _, e1 := syscall.Syscall(
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syscall.SYS_DUP2, uintptr(oldfd), uintptr(newfd), 0)
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if e1 != 0 {
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err = e1
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}
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return
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}
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// Call msync(2) with the MS_SYNC flag on a slice previously returned by
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// mmap(2).
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func msync(p []byte) (err error) {
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_, _, errno := unix.Syscall(
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unix.SYS_MSYNC,
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uintptr(unsafe.Pointer(&p[0])),
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uintptr(len(p)),
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unix.MS_SYNC)
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if errno != 0 {
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err = errno
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return
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}
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return
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}
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////////////////////////////////////////////////////////////////////////
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// No errors
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////////////////////////////////////////////////////////////////////////
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type NoErrorsTest struct {
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flushFSTest
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}
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func init() { RegisterTestSuite(&NoErrorsTest{}) }
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func (t *NoErrorsTest) SetUp(ti *TestInfo) {
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const noErr = 0
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t.flushFSTest.setUp(ti, noErr, noErr, false)
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}
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func (t *NoErrorsTest) Close_ReadWrite() {
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var n int
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var off int64
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var err error
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buf := make([]byte, 1024)
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// Open the file.
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t.f1, err = os.OpenFile(path.Join(t.Dir, "foo"), os.O_RDWR, 0)
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AssertEq(nil, err)
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// Write some contents to the file.
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n, err = t.f1.Write([]byte("taco"))
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AssertEq(nil, err)
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AssertEq(4, n)
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// Seek and read them back.
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off, err = t.f1.Seek(0, 0)
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AssertEq(nil, err)
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AssertEq(0, off)
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n, err = t.f1.Read(buf)
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AssertThat(err, AnyOf(nil, io.EOF))
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AssertEq("taco", string(buf[:n]))
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// At this point, no flushes or fsyncs should have happened.
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AssertThat(t.getFlushes(), ElementsAre())
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AssertThat(t.getFsyncs(), ElementsAre())
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// Close the file.
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err = t.f1.Close()
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t.f1 = nil
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AssertEq(nil, err)
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// Now we should have received the flush operation (but still no fsync).
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ExpectThat(t.getFlushes(), ElementsAre("taco"))
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ExpectThat(t.getFsyncs(), ElementsAre())
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}
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func (t *NoErrorsTest) Close_ReadOnly() {
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var err error
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// Open the file.
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t.f1, err = os.OpenFile(path.Join(t.Dir, "foo"), os.O_RDONLY, 0)
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AssertEq(nil, err)
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// At this point, no flushes or fsyncs should have happened.
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AssertThat(t.getFlushes(), ElementsAre())
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AssertThat(t.getFsyncs(), ElementsAre())
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// Close the file.
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err = t.f1.Close()
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t.f1 = nil
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AssertEq(nil, err)
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// Now we should have received the flush operation (but still no fsync).
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ExpectThat(t.getFlushes(), ElementsAre(""))
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ExpectThat(t.getFsyncs(), ElementsAre())
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}
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func (t *NoErrorsTest) Close_WriteOnly() {
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var n int
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var err error
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// Open the file.
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t.f1, err = os.OpenFile(path.Join(t.Dir, "foo"), os.O_WRONLY, 0)
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AssertEq(nil, err)
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// Write some contents to the file.
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n, err = t.f1.Write([]byte("taco"))
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AssertEq(nil, err)
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AssertEq(4, n)
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// At this point, no flushes or fsyncs should have happened.
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AssertThat(t.getFlushes(), ElementsAre())
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AssertThat(t.getFsyncs(), ElementsAre())
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// Close the file.
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err = t.f1.Close()
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t.f1 = nil
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AssertEq(nil, err)
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// Now we should have received the flush operation (but still no fsync).
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ExpectThat(t.getFlushes(), ElementsAre("taco"))
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ExpectThat(t.getFsyncs(), ElementsAre())
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}
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func (t *NoErrorsTest) Close_MultipleTimes_NonOverlappingFileHandles() {
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var n int
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var err error
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// Open the file.
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t.f1, err = os.OpenFile(path.Join(t.Dir, "foo"), os.O_WRONLY, 0)
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AssertEq(nil, err)
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// Write some contents to the file.
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n, err = t.f1.Write([]byte("taco"))
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AssertEq(nil, err)
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AssertEq(4, n)
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// At this point, no flushes or fsyncs should have happened.
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AssertThat(t.getFlushes(), ElementsAre())
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AssertThat(t.getFsyncs(), ElementsAre())
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// Close the file.
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err = t.f1.Close()
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t.f1 = nil
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AssertEq(nil, err)
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// Now we should have received the flush operation (but still no fsync).
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AssertThat(t.getFlushes(), ElementsAre("taco"))
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AssertThat(t.getFsyncs(), ElementsAre())
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// Open the file again.
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t.f1, err = os.OpenFile(path.Join(t.Dir, "foo"), os.O_WRONLY, 0)
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AssertEq(nil, err)
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// Write again; expect no further flushes.
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n, err = t.f1.Write([]byte("p"))
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AssertEq(nil, err)
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AssertEq(1, n)
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AssertThat(t.getFlushes(), ElementsAre("taco"))
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AssertThat(t.getFsyncs(), ElementsAre())
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// Close the file. Now the new contents should be flushed.
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err = t.f1.Close()
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t.f1 = nil
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AssertEq(nil, err)
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AssertThat(t.getFlushes(), ElementsAre("taco", "paco"))
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AssertThat(t.getFsyncs(), ElementsAre())
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}
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func (t *NoErrorsTest) Close_MultipleTimes_OverlappingFileHandles() {
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var n int
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var err error
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// Open the file with two handles.
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t.f1, err = os.OpenFile(path.Join(t.Dir, "foo"), os.O_WRONLY, 0)
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AssertEq(nil, err)
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t.f2, err = os.OpenFile(path.Join(t.Dir, "foo"), os.O_WRONLY, 0)
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AssertEq(nil, err)
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// Write some contents with each handle.
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n, err = t.f1.Write([]byte("taco"))
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AssertEq(nil, err)
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AssertEq(4, n)
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n, err = t.f2.Write([]byte("p"))
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AssertEq(nil, err)
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AssertEq(1, n)
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// At this point, no flushes or fsyncs should have happened.
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AssertThat(t.getFlushes(), ElementsAre())
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AssertThat(t.getFsyncs(), ElementsAre())
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// Close one handle. The current contents should be flushed.
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err = t.f1.Close()
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t.f1 = nil
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AssertEq(nil, err)
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AssertThat(t.getFlushes(), ElementsAre("paco"))
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AssertThat(t.getFsyncs(), ElementsAre())
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// Write some more contents via the other handle. Again, no further flushes.
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n, err = t.f2.Write([]byte("orp"))
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AssertEq(nil, err)
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AssertEq(3, n)
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AssertThat(t.getFlushes(), ElementsAre("paco"))
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AssertThat(t.getFsyncs(), ElementsAre())
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// Close the handle. Now the new contents should be flushed.
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err = t.f2.Close()
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t.f2 = nil
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AssertEq(nil, err)
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AssertThat(t.getFlushes(), ElementsAre("paco", "porp"))
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AssertThat(t.getFsyncs(), ElementsAre())
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}
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func (t *NoErrorsTest) Fsync() {
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var n int
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var err error
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// Open the file.
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t.f1, err = os.OpenFile(path.Join(t.Dir, "foo"), os.O_WRONLY, 0)
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AssertEq(nil, err)
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// Write some contents to the file.
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n, err = t.f1.Write([]byte("taco"))
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AssertEq(nil, err)
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AssertEq(4, n)
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AssertThat(t.getFlushes(), ElementsAre())
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AssertThat(t.getFsyncs(), ElementsAre())
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// Fsync.
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err = t.f1.Sync()
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AssertEq(nil, err)
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AssertThat(t.getFlushes(), ElementsAre())
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AssertThat(t.getFsyncs(), ElementsAre("taco"))
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// Write some more contents.
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n, err = t.f1.Write([]byte("s"))
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AssertEq(nil, err)
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AssertEq(1, n)
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AssertThat(t.getFlushes(), ElementsAre())
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AssertThat(t.getFsyncs(), ElementsAre("taco"))
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// Fsync.
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err = t.f1.Sync()
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AssertEq(nil, err)
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AssertThat(t.getFlushes(), ElementsAre())
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AssertThat(t.getFsyncs(), ElementsAre("taco", "tacos"))
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}
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func (t *NoErrorsTest) Fdatasync() {
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var n int
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var err error
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if !fsutil.FdatasyncSupported {
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return
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}
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// Open the file.
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t.f1, err = os.OpenFile(path.Join(t.Dir, "foo"), os.O_WRONLY, 0)
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AssertEq(nil, err)
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// Write some contents to the file.
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n, err = t.f1.Write([]byte("taco"))
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AssertEq(nil, err)
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AssertEq(4, n)
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AssertThat(t.getFlushes(), ElementsAre())
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AssertThat(t.getFsyncs(), ElementsAre())
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// Fdatasync.
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err = fsutil.Fdatasync(t.f1)
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AssertEq(nil, err)
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AssertThat(t.getFlushes(), ElementsAre())
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AssertThat(t.getFsyncs(), ElementsAre("taco"))
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// Write some more contents.
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n, err = t.f1.Write([]byte("s"))
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AssertEq(nil, err)
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AssertEq(1, n)
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AssertThat(t.getFlushes(), ElementsAre())
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AssertThat(t.getFsyncs(), ElementsAre("taco"))
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// Fdatasync.
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err = fsutil.Fdatasync(t.f1)
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AssertEq(nil, err)
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AssertThat(t.getFlushes(), ElementsAre())
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AssertThat(t.getFsyncs(), ElementsAre("taco", "tacos"))
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}
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func (t *NoErrorsTest) Dup() {
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var n int
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var err error
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var expectedFlushes []interface{}
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// Open the file.
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t.f1, err = os.OpenFile(path.Join(t.Dir, "foo"), os.O_WRONLY, 0)
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AssertEq(nil, err)
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fd1 := t.f1.Fd()
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// Use dup(2) to get another copy.
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fd2, err := syscall.Dup(int(fd1))
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AssertEq(nil, err)
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t.f2 = os.NewFile(uintptr(fd2), t.f1.Name())
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// Write some contents with each handle.
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n, err = t.f1.Write([]byte("taco"))
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AssertEq(nil, err)
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AssertEq(4, n)
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n, err = t.f2.Write([]byte("s"))
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AssertEq(nil, err)
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AssertEq(1, n)
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// At this point, no flushes or fsyncs should have happened.
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AssertThat(t.getFlushes(), ElementsAre())
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AssertThat(t.getFsyncs(), ElementsAre())
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// Close one handle. On Linux the current contents should be flushed. On OS
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// X, where the semantics of handles are different, they apparently are not.
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// (Cf. https://github.com/osxfuse/osxfuse/issues/199)
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err = t.f1.Close()
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t.f1 = nil
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AssertEq(nil, err)
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if !isDarwin {
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expectedFlushes = append(expectedFlushes, "tacos")
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}
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AssertThat(t.getFlushes(), ElementsAre(expectedFlushes...))
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AssertThat(t.getFsyncs(), ElementsAre())
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// Write some more contents via the other handle. Again, no further flushes.
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n, err = t.f2.Write([]byte("!"))
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AssertEq(nil, err)
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AssertEq(1, n)
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AssertThat(t.getFlushes(), ElementsAre(expectedFlushes...))
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AssertThat(t.getFsyncs(), ElementsAre())
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// Close the handle. Now the new contents should be flushed.
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err = t.f2.Close()
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t.f2 = nil
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AssertEq(nil, err)
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expectedFlushes = append(expectedFlushes, "tacos!")
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ExpectThat(t.getFlushes(), ElementsAre(expectedFlushes...))
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ExpectThat(t.getFsyncs(), ElementsAre())
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}
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func (t *NoErrorsTest) Dup2() {
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var n int
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var err error
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|
|
// Open the file.
|
|
t.f1, err = os.OpenFile(path.Join(t.Dir, "foo"), os.O_WRONLY, 0)
|
|
AssertEq(nil, err)
|
|
|
|
// Write some contents to the file.
|
|
n, err = t.f1.Write([]byte("taco"))
|
|
AssertEq(nil, err)
|
|
AssertEq(4, n)
|
|
|
|
// Create some anonymous temporary file.
|
|
t.f2, err = fsutil.AnonymousFile("")
|
|
AssertEq(nil, err)
|
|
|
|
// Duplicate the temporary file descriptor on top of the file from our file
|
|
// system. We should see a flush.
|
|
err = dup2(int(t.f2.Fd()), int(t.f1.Fd()))
|
|
ExpectEq(nil, err)
|
|
|
|
ExpectThat(t.getFlushes(), ElementsAre("taco"))
|
|
ExpectThat(t.getFsyncs(), ElementsAre())
|
|
}
|
|
|
|
func (t *NoErrorsTest) Mmap_NoMsync_MunmapBeforeClose() {
|
|
var n int
|
|
var err error
|
|
|
|
// Open the file.
|
|
t.f1, err = os.OpenFile(path.Join(t.Dir, "foo"), os.O_RDWR, 0)
|
|
AssertEq(nil, err)
|
|
|
|
// Write some contents to the file.
|
|
n, err = t.f1.Write([]byte("taco"))
|
|
AssertEq(nil, err)
|
|
AssertEq(4, n)
|
|
|
|
// mmap the file.
|
|
data, err := syscall.Mmap(
|
|
int(t.f1.Fd()), 0, 4,
|
|
syscall.PROT_READ|syscall.PROT_WRITE,
|
|
syscall.MAP_SHARED)
|
|
|
|
AssertEq(nil, err)
|
|
AssertEq("taco", string(data))
|
|
|
|
// Modify the contents.
|
|
data[0] = 'p'
|
|
|
|
// Unmap.
|
|
err = syscall.Munmap(data)
|
|
AssertEq(nil, err)
|
|
|
|
// munmap does not cause a flush.
|
|
ExpectThat(t.getFlushes(), ElementsAre())
|
|
ExpectThat(t.getFsyncs(), ElementsAre())
|
|
|
|
// Close the file. We should see a flush. On Darwin, this will contain out of
|
|
// date contents (cf. https://github.com/osxfuse/osxfuse/issues/202).
|
|
err = t.f1.Close()
|
|
t.f1 = nil
|
|
AssertEq(nil, err)
|
|
|
|
if isDarwin {
|
|
ExpectThat(t.getFlushes(), ElementsAre("taco"))
|
|
ExpectThat(t.getFsyncs(), ElementsAre())
|
|
} else {
|
|
ExpectThat(t.getFlushes(), ElementsAre("paco"))
|
|
ExpectThat(t.getFsyncs(), ElementsAre())
|
|
}
|
|
}
|
|
|
|
func (t *NoErrorsTest) Mmap_NoMsync_CloseBeforeMunmap() {
|
|
var n int
|
|
var err error
|
|
|
|
// Open the file.
|
|
t.f1, err = os.OpenFile(path.Join(t.Dir, "foo"), os.O_RDWR, 0)
|
|
AssertEq(nil, err)
|
|
|
|
// Write some contents to the file.
|
|
n, err = t.f1.Write([]byte("taco"))
|
|
AssertEq(nil, err)
|
|
AssertEq(4, n)
|
|
|
|
// mmap the file.
|
|
data, err := syscall.Mmap(
|
|
int(t.f1.Fd()), 0, 4,
|
|
syscall.PROT_READ|syscall.PROT_WRITE,
|
|
syscall.MAP_SHARED)
|
|
|
|
AssertEq(nil, err)
|
|
AssertEq("taco", string(data))
|
|
|
|
// Close the file. We should see a flush.
|
|
err = t.f1.Close()
|
|
t.f1 = nil
|
|
AssertEq(nil, err)
|
|
|
|
AssertThat(t.getFlushes(), ElementsAre("taco"))
|
|
AssertThat(t.getFsyncs(), ElementsAre())
|
|
|
|
// Modify the contents.
|
|
data[0] = 'p'
|
|
|
|
// Unmap.
|
|
err = syscall.Munmap(data)
|
|
AssertEq(nil, err)
|
|
|
|
// munmap does not cause a flush.
|
|
ExpectThat(t.getFlushes(), ElementsAre("taco"))
|
|
ExpectThat(t.getFsyncs(), ElementsAre())
|
|
}
|
|
|
|
func (t *NoErrorsTest) Mmap_WithMsync_MunmapBeforeClose() {
|
|
var n int
|
|
var err error
|
|
|
|
var expectedFsyncs []interface{}
|
|
|
|
// Open the file.
|
|
t.f1, err = os.OpenFile(path.Join(t.Dir, "foo"), os.O_RDWR, 0)
|
|
AssertEq(nil, err)
|
|
|
|
// Write some contents to the file.
|
|
n, err = t.f1.Write([]byte("taco"))
|
|
AssertEq(nil, err)
|
|
AssertEq(4, n)
|
|
|
|
// mmap the file.
|
|
data, err := syscall.Mmap(
|
|
int(t.f1.Fd()), 0, 4,
|
|
syscall.PROT_READ|syscall.PROT_WRITE,
|
|
syscall.MAP_SHARED)
|
|
|
|
AssertEq(nil, err)
|
|
AssertEq("taco", string(data))
|
|
|
|
// Modify the contents.
|
|
data[0] = 'p'
|
|
|
|
// msync. This causes an fsync, except on OS X (cf.
|
|
// https://github.com/osxfuse/osxfuse/issues/202).
|
|
err = msync(data)
|
|
ExpectEq(nil, err)
|
|
|
|
if !isDarwin {
|
|
expectedFsyncs = append(expectedFsyncs, "paco")
|
|
}
|
|
|
|
ExpectThat(t.getFlushes(), ElementsAre())
|
|
ExpectThat(t.getFsyncs(), ElementsAre(expectedFsyncs...))
|
|
|
|
// Unmap. This does not cause anything.
|
|
err = syscall.Munmap(data)
|
|
AssertEq(nil, err)
|
|
|
|
ExpectThat(t.getFlushes(), ElementsAre())
|
|
ExpectThat(t.getFsyncs(), ElementsAre(expectedFsyncs...))
|
|
|
|
// Close the file. We should now see a flush with the modified contents, even
|
|
// on OS X.
|
|
err = t.f1.Close()
|
|
t.f1 = nil
|
|
AssertEq(nil, err)
|
|
|
|
ExpectThat(t.getFlushes(), ElementsAre("paco"))
|
|
ExpectThat(t.getFsyncs(), ElementsAre(expectedFsyncs...))
|
|
}
|
|
|
|
func (t *NoErrorsTest) Mmap_WithMsync_CloseBeforeMunmap() {
|
|
var n int
|
|
var err error
|
|
|
|
var expectedFsyncs []interface{}
|
|
|
|
// Open the file.
|
|
t.f1, err = os.OpenFile(path.Join(t.Dir, "foo"), os.O_RDWR, 0)
|
|
AssertEq(nil, err)
|
|
|
|
// Write some contents to the file.
|
|
n, err = t.f1.Write([]byte("taco"))
|
|
AssertEq(nil, err)
|
|
AssertEq(4, n)
|
|
|
|
// mmap the file.
|
|
data, err := syscall.Mmap(
|
|
int(t.f1.Fd()), 0, 4,
|
|
syscall.PROT_READ|syscall.PROT_WRITE,
|
|
syscall.MAP_SHARED)
|
|
|
|
AssertEq(nil, err)
|
|
AssertEq("taco", string(data))
|
|
|
|
// Close the file. We should see a flush.
|
|
err = t.f1.Close()
|
|
t.f1 = nil
|
|
AssertEq(nil, err)
|
|
|
|
AssertThat(t.getFlushes(), ElementsAre("taco"))
|
|
AssertThat(t.getFsyncs(), ElementsAre())
|
|
|
|
// Modify the contents.
|
|
data[0] = 'p'
|
|
|
|
// msync. This causes an fsync, except on OS X (cf.
|
|
// https://github.com/osxfuse/osxfuse/issues/202).
|
|
err = msync(data)
|
|
ExpectEq(nil, err)
|
|
|
|
if !isDarwin {
|
|
expectedFsyncs = append(expectedFsyncs, "paco")
|
|
}
|
|
|
|
ExpectThat(t.getFlushes(), ElementsAre("taco"))
|
|
ExpectThat(t.getFsyncs(), ElementsAre(expectedFsyncs...))
|
|
|
|
// Unmap. Again, this does not cause a flush.
|
|
err = syscall.Munmap(data)
|
|
AssertEq(nil, err)
|
|
|
|
ExpectThat(t.getFlushes(), ElementsAre("taco"))
|
|
ExpectThat(t.getFsyncs(), ElementsAre(expectedFsyncs...))
|
|
}
|
|
|
|
func (t *NoErrorsTest) Directory() {
|
|
var err error
|
|
|
|
// Open the directory.
|
|
t.f1, err = os.Open(path.Join(t.Dir, "bar"))
|
|
AssertEq(nil, err)
|
|
|
|
// Sanity check: stat it.
|
|
fi, err := t.f1.Stat()
|
|
AssertEq(nil, err)
|
|
AssertEq(0777|os.ModeDir, fi.Mode())
|
|
|
|
// Sync it.
|
|
err = t.f1.Sync()
|
|
AssertEq(nil, err)
|
|
|
|
// Close it.
|
|
err = t.f1.Close()
|
|
t.f1 = nil
|
|
AssertEq(nil, err)
|
|
|
|
// No flushes or fsync requests should have been received.
|
|
ExpectThat(t.getFlushes(), ElementsAre())
|
|
ExpectThat(t.getFsyncs(), ElementsAre())
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////
|
|
// Flush error
|
|
////////////////////////////////////////////////////////////////////////
|
|
|
|
type FlushErrorTest struct {
|
|
flushFSTest
|
|
}
|
|
|
|
func init() { RegisterTestSuite(&FlushErrorTest{}) }
|
|
|
|
func (t *FlushErrorTest) SetUp(ti *TestInfo) {
|
|
const noErr = 0
|
|
t.flushFSTest.setUp(ti, bazilfuse.ENOENT, noErr, false)
|
|
}
|
|
|
|
func (t *FlushErrorTest) Close() {
|
|
var err error
|
|
|
|
// Open the file.
|
|
t.f1, err = os.OpenFile(path.Join(t.Dir, "foo"), os.O_RDWR, 0)
|
|
AssertEq(nil, err)
|
|
|
|
// Close the file.
|
|
err = t.f1.Close()
|
|
t.f1 = nil
|
|
|
|
ExpectThat(err, Error(HasSubstr("no such file")))
|
|
}
|
|
|
|
func (t *FlushErrorTest) Dup() {
|
|
var err error
|
|
|
|
// Open the file.
|
|
t.f1, err = os.OpenFile(path.Join(t.Dir, "foo"), os.O_WRONLY, 0)
|
|
AssertEq(nil, err)
|
|
|
|
fd1 := t.f1.Fd()
|
|
|
|
// Use dup(2) to get another copy.
|
|
fd2, err := syscall.Dup(int(fd1))
|
|
AssertEq(nil, err)
|
|
|
|
t.f2 = os.NewFile(uintptr(fd2), t.f1.Name())
|
|
|
|
// Close by the first handle. On OS X, where the semantics of file handles
|
|
// are different (cf. https://github.com/osxfuse/osxfuse/issues/199), this
|
|
// does not result in an error.
|
|
err = t.f1.Close()
|
|
t.f1 = nil
|
|
|
|
if isDarwin {
|
|
AssertEq(nil, err)
|
|
} else {
|
|
ExpectThat(err, Error(HasSubstr("no such file")))
|
|
}
|
|
|
|
// Close by the second handle.
|
|
err = t.f2.Close()
|
|
t.f2 = nil
|
|
|
|
ExpectThat(err, Error(HasSubstr("no such file")))
|
|
}
|
|
|
|
func (t *FlushErrorTest) Dup2() {
|
|
var err error
|
|
|
|
// Open the file.
|
|
t.f1, err = os.OpenFile(path.Join(t.Dir, "foo"), os.O_WRONLY, 0)
|
|
AssertEq(nil, err)
|
|
|
|
// Create some anonymous temporary file.
|
|
t.f2, err = fsutil.AnonymousFile("")
|
|
AssertEq(nil, err)
|
|
|
|
// Duplicate the temporary file descriptor on top of the file from our file
|
|
// system. We shouldn't see the flush error.
|
|
err = dup2(int(t.f2.Fd()), int(t.f1.Fd()))
|
|
ExpectEq(nil, err)
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////
|
|
// Fsync error
|
|
////////////////////////////////////////////////////////////////////////
|
|
|
|
type FsyncErrorTest struct {
|
|
flushFSTest
|
|
}
|
|
|
|
func init() { RegisterTestSuite(&FsyncErrorTest{}) }
|
|
|
|
func (t *FsyncErrorTest) SetUp(ti *TestInfo) {
|
|
const noErr = 0
|
|
t.flushFSTest.setUp(ti, noErr, bazilfuse.ENOENT, false)
|
|
}
|
|
|
|
func (t *FsyncErrorTest) Fsync() {
|
|
var err error
|
|
|
|
// Open the file.
|
|
t.f1, err = os.OpenFile(path.Join(t.Dir, "foo"), os.O_RDWR, 0)
|
|
AssertEq(nil, err)
|
|
|
|
// Fsync.
|
|
err = t.f1.Sync()
|
|
|
|
ExpectThat(err, Error(HasSubstr("no such file")))
|
|
}
|
|
|
|
func (t *FsyncErrorTest) Fdatasync() {
|
|
var err error
|
|
|
|
if !fsutil.FdatasyncSupported {
|
|
return
|
|
}
|
|
|
|
// Open the file.
|
|
t.f1, err = os.OpenFile(path.Join(t.Dir, "foo"), os.O_RDWR, 0)
|
|
AssertEq(nil, err)
|
|
|
|
// Fdatasync.
|
|
err = fsutil.Fdatasync(t.f1)
|
|
|
|
ExpectThat(err, Error(HasSubstr("no such file")))
|
|
}
|
|
|
|
func (t *FsyncErrorTest) Msync() {
|
|
var err error
|
|
|
|
// On OS X, msync does not cause SyncFile.
|
|
if isDarwin {
|
|
return
|
|
}
|
|
|
|
// Open the file.
|
|
t.f1, err = os.OpenFile(path.Join(t.Dir, "foo"), os.O_RDWR, 0)
|
|
AssertEq(nil, err)
|
|
|
|
// mmap the file.
|
|
data, err := syscall.Mmap(
|
|
int(t.f1.Fd()), 0, 4,
|
|
syscall.PROT_READ|syscall.PROT_WRITE,
|
|
syscall.MAP_SHARED)
|
|
|
|
AssertEq(nil, err)
|
|
|
|
// msync the mapping.
|
|
err = msync(data)
|
|
ExpectThat(err, Error(HasSubstr("no such file")))
|
|
|
|
// Unmap.
|
|
err = syscall.Munmap(data)
|
|
AssertEq(nil, err)
|
|
}
|
|
|
|
////////////////////////////////////////////////////////////////////////
|
|
// Read-only mount
|
|
////////////////////////////////////////////////////////////////////////
|
|
|
|
type ReadOnlyTest struct {
|
|
flushFSTest
|
|
}
|
|
|
|
func init() { RegisterTestSuite(&ReadOnlyTest{}) }
|
|
|
|
func (t *ReadOnlyTest) SetUp(ti *TestInfo) {
|
|
const noErr = 0
|
|
t.flushFSTest.setUp(ti, noErr, noErr, true)
|
|
}
|
|
|
|
func (t *ReadOnlyTest) ReadRoot() {
|
|
entries, err := fusetesting.ReadDirPicky(t.Dir)
|
|
AssertEq(nil, err)
|
|
AssertEq(2, len(entries))
|
|
|
|
AssertTrue(false, "TODO")
|
|
}
|
|
|
|
func (t *ReadOnlyTest) StatFiles() {
|
|
AssertTrue(false, "TODO")
|
|
}
|
|
|
|
func (t *ReadOnlyTest) ReadFile() {
|
|
AssertTrue(false, "TODO")
|
|
}
|
|
|
|
func (t *ReadOnlyTest) ReadDir() {
|
|
AssertTrue(false, "TODO")
|
|
}
|
|
|
|
func (t *ReadOnlyTest) CreateFile() {
|
|
AssertTrue(false, "TODO")
|
|
}
|
|
|
|
func (t *ReadOnlyTest) Mkdir() {
|
|
AssertTrue(false, "TODO")
|
|
}
|
|
|
|
func (t *ReadOnlyTest) OpenForWrite() {
|
|
AssertTrue(false, "TODO")
|
|
}
|
|
|
|
func (t *ReadOnlyTest) Chtimes() {
|
|
AssertTrue(false, "TODO")
|
|
}
|
|
|
|
func (t *ReadOnlyTest) Chmod() {
|
|
AssertTrue(false, "TODO")
|
|
}
|