822 lines
24 KiB
Go
822 lines
24 KiB
Go
// Copyright 2018 The gVisor Authors.
|
|
//
|
|
// 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 fsgofer
|
|
|
|
import (
|
|
"fmt"
|
|
"io/ioutil"
|
|
"net"
|
|
"os"
|
|
"path"
|
|
"path/filepath"
|
|
"testing"
|
|
|
|
"golang.org/x/sys/unix"
|
|
"gvisor.dev/gvisor/pkg/log"
|
|
"gvisor.dev/gvisor/pkg/p9"
|
|
"gvisor.dev/gvisor/pkg/test/testutil"
|
|
)
|
|
|
|
var allOpenFlags = []p9.OpenFlags{p9.ReadOnly, p9.WriteOnly, p9.ReadWrite}
|
|
|
|
var (
|
|
allTypes = []uint32{unix.S_IFREG, unix.S_IFDIR, unix.S_IFLNK}
|
|
|
|
// allConfs is set in init().
|
|
allConfs []Config
|
|
|
|
rwConfs = []Config{{ROMount: false}}
|
|
roConfs = []Config{{ROMount: true}}
|
|
)
|
|
|
|
func init() {
|
|
log.SetLevel(log.Debug)
|
|
|
|
allConfs = append(allConfs, rwConfs...)
|
|
allConfs = append(allConfs, roConfs...)
|
|
|
|
if err := OpenProcSelfFD(); err != nil {
|
|
panic(err)
|
|
}
|
|
}
|
|
|
|
func configTestName(conf *Config) string {
|
|
if conf.ROMount {
|
|
return "ROMount"
|
|
}
|
|
return "RWMount"
|
|
}
|
|
|
|
func assertPanic(t *testing.T, f func()) {
|
|
defer func() {
|
|
if r := recover(); r == nil {
|
|
t.Errorf("function did not panic")
|
|
}
|
|
}()
|
|
f()
|
|
}
|
|
|
|
func testReadWrite(f p9.File, flags p9.OpenFlags, content []byte) error {
|
|
want := make([]byte, len(content))
|
|
copy(want, content)
|
|
|
|
b := []byte("test-1-2-3")
|
|
w, err := f.WriteAt(b, uint64(len(content)))
|
|
if flags == p9.WriteOnly || flags == p9.ReadWrite {
|
|
if err != nil {
|
|
return fmt.Errorf("WriteAt(): %v", err)
|
|
}
|
|
if w != len(b) {
|
|
return fmt.Errorf("WriteAt() was partial, got: %d, want: %d", w, len(b))
|
|
}
|
|
want = append(want, b...)
|
|
} else {
|
|
if e, ok := err.(unix.Errno); !ok || e != unix.EBADF {
|
|
return fmt.Errorf("WriteAt() should have failed, got: %d, want: EBADFD", err)
|
|
}
|
|
}
|
|
|
|
rBuf := make([]byte, len(want))
|
|
r, err := f.ReadAt(rBuf, 0)
|
|
if flags == p9.ReadOnly || flags == p9.ReadWrite {
|
|
if err != nil {
|
|
return fmt.Errorf("ReadAt(): %v", err)
|
|
}
|
|
if r != len(rBuf) {
|
|
return fmt.Errorf("ReadAt() was partial, got: %d, want: %d", r, len(rBuf))
|
|
}
|
|
if string(rBuf) != string(want) {
|
|
return fmt.Errorf("ReadAt() wrong data, got: %s, want: %s", string(rBuf), want)
|
|
}
|
|
} else {
|
|
if e, ok := err.(unix.Errno); !ok || e != unix.EBADF {
|
|
return fmt.Errorf("ReadAt() should have failed, got: %d, want: EBADFD", err)
|
|
}
|
|
}
|
|
return nil
|
|
}
|
|
|
|
type state struct {
|
|
root *localFile
|
|
file *localFile
|
|
conf Config
|
|
fileType uint32
|
|
}
|
|
|
|
func (s state) String() string {
|
|
return fmt.Sprintf("type(%v)", s.fileType)
|
|
}
|
|
|
|
func typeName(fileType uint32) string {
|
|
switch fileType {
|
|
case unix.S_IFREG:
|
|
return "file"
|
|
case unix.S_IFDIR:
|
|
return "directory"
|
|
case unix.S_IFLNK:
|
|
return "symlink"
|
|
default:
|
|
panic(fmt.Sprintf("invalid file type for test: %d", fileType))
|
|
}
|
|
}
|
|
|
|
func runAll(t *testing.T, test func(*testing.T, state)) {
|
|
runCustom(t, allTypes, allConfs, test)
|
|
}
|
|
|
|
func runCustom(t *testing.T, types []uint32, confs []Config, test func(*testing.T, state)) {
|
|
for _, c := range confs {
|
|
for _, ft := range types {
|
|
name := fmt.Sprintf("%s/%s", configTestName(&c), typeName(ft))
|
|
t.Run(name, func(t *testing.T) {
|
|
path, name, err := setup(ft)
|
|
if err != nil {
|
|
t.Fatalf("%v", err)
|
|
}
|
|
defer os.RemoveAll(path)
|
|
|
|
a, err := NewAttachPoint(path, c)
|
|
if err != nil {
|
|
t.Fatalf("NewAttachPoint failed: %v", err)
|
|
}
|
|
root, err := a.Attach()
|
|
if err != nil {
|
|
t.Fatalf("Attach failed, err: %v", err)
|
|
}
|
|
|
|
_, file, err := root.Walk([]string{name})
|
|
if err != nil {
|
|
root.Close()
|
|
t.Fatalf("root.Walk({%q}) failed, err: %v", "symlink", err)
|
|
}
|
|
|
|
st := state{
|
|
root: root.(*localFile),
|
|
file: file.(*localFile),
|
|
conf: c,
|
|
fileType: ft,
|
|
}
|
|
test(t, st)
|
|
file.Close()
|
|
root.Close()
|
|
})
|
|
}
|
|
}
|
|
}
|
|
|
|
func setup(fileType uint32) (string, string, error) {
|
|
path, err := ioutil.TempDir(testutil.TmpDir(), "root-")
|
|
if err != nil {
|
|
return "", "", fmt.Errorf("ioutil.TempDir() failed, err: %v", err)
|
|
}
|
|
|
|
// First attach with writable configuration to setup tree.
|
|
a, err := NewAttachPoint(path, Config{})
|
|
if err != nil {
|
|
return "", "", err
|
|
}
|
|
root, err := a.Attach()
|
|
if err != nil {
|
|
return "", "", fmt.Errorf("Attach failed, err: %v", err)
|
|
}
|
|
defer root.Close()
|
|
|
|
var name string
|
|
switch fileType {
|
|
case unix.S_IFREG:
|
|
name = "file"
|
|
_, f, _, _, err := root.Create(name, p9.ReadWrite, 0777, p9.UID(os.Getuid()), p9.GID(os.Getgid()))
|
|
if err != nil {
|
|
return "", "", fmt.Errorf("createFile(root, %q) failed, err: %v", "test", err)
|
|
}
|
|
defer f.Close()
|
|
case unix.S_IFDIR:
|
|
name = "dir"
|
|
if _, err := root.Mkdir(name, 0777, p9.UID(os.Getuid()), p9.GID(os.Getgid())); err != nil {
|
|
return "", "", fmt.Errorf("root.MkDir(%q) failed, err: %v", name, err)
|
|
}
|
|
case unix.S_IFLNK:
|
|
name = "symlink"
|
|
if _, err := root.Symlink("/some/target", name, p9.UID(os.Getuid()), p9.GID(os.Getgid())); err != nil {
|
|
return "", "", fmt.Errorf("root.Symlink(%q) failed, err: %v", name, err)
|
|
}
|
|
default:
|
|
panic(fmt.Sprintf("unknown file type %v", fileType))
|
|
}
|
|
return path, name, nil
|
|
}
|
|
|
|
func createFile(dir *localFile, name string) (*localFile, error) {
|
|
_, f, _, _, err := dir.Create(name, p9.ReadWrite, 0777, p9.UID(os.Getuid()), p9.GID(os.Getgid()))
|
|
if err != nil {
|
|
return nil, err
|
|
}
|
|
return f.(*localFile), nil
|
|
}
|
|
|
|
func TestReadWrite(t *testing.T) {
|
|
runCustom(t, []uint32{unix.S_IFDIR}, rwConfs, func(t *testing.T, s state) {
|
|
child, err := createFile(s.file, "test")
|
|
if err != nil {
|
|
t.Fatalf("%v: createFile() failed, err: %v", s, err)
|
|
}
|
|
defer child.Close()
|
|
want := []byte("foobar")
|
|
w, err := child.WriteAt(want, 0)
|
|
if err != nil {
|
|
t.Fatalf("%v: Write() failed, err: %v", s, err)
|
|
}
|
|
if w != len(want) {
|
|
t.Fatalf("%v: Write() was partial, got: %d, expected: %d", s, w, len(want))
|
|
}
|
|
for _, flags := range allOpenFlags {
|
|
_, l, err := s.file.Walk([]string{"test"})
|
|
if err != nil {
|
|
t.Fatalf("%v: Walk(%s) failed, err: %v", s, "test", err)
|
|
}
|
|
fd, _, _, err := l.Open(flags)
|
|
if err != nil {
|
|
t.Fatalf("%v: Open(%v) failed, err: %v", s, flags, err)
|
|
}
|
|
if fd != nil {
|
|
defer fd.Close()
|
|
}
|
|
if err := testReadWrite(l, flags, want); err != nil {
|
|
t.Fatalf("%v: testReadWrite(%v) failed: %v", s, flags, err)
|
|
}
|
|
}
|
|
})
|
|
}
|
|
|
|
func TestCreate(t *testing.T) {
|
|
runCustom(t, []uint32{unix.S_IFDIR}, rwConfs, func(t *testing.T, s state) {
|
|
for i, flags := range allOpenFlags {
|
|
_, l, _, _, err := s.file.Create(fmt.Sprintf("test-%d", i), flags, 0777, p9.UID(os.Getuid()), p9.GID(os.Getgid()))
|
|
if err != nil {
|
|
t.Fatalf("%v, %v: WriteAt() failed, err: %v", s, flags, err)
|
|
}
|
|
|
|
if err := testReadWrite(l, flags, nil); err != nil {
|
|
t.Fatalf("%v: testReadWrite(%v) failed: %v", s, flags, err)
|
|
}
|
|
}
|
|
})
|
|
}
|
|
|
|
// TestReadWriteDup tests that a file opened in any mode can be dup'ed and
|
|
// reopened in any other mode.
|
|
func TestReadWriteDup(t *testing.T) {
|
|
runCustom(t, []uint32{unix.S_IFDIR}, rwConfs, func(t *testing.T, s state) {
|
|
child, err := createFile(s.file, "test")
|
|
if err != nil {
|
|
t.Fatalf("%v: createFile() failed, err: %v", s, err)
|
|
}
|
|
defer child.Close()
|
|
want := []byte("foobar")
|
|
w, err := child.WriteAt(want, 0)
|
|
if err != nil {
|
|
t.Fatalf("%v: Write() failed, err: %v", s, err)
|
|
}
|
|
if w != len(want) {
|
|
t.Fatalf("%v: Write() was partial, got: %d, expected: %d", s, w, len(want))
|
|
}
|
|
for _, flags := range allOpenFlags {
|
|
_, l, err := s.file.Walk([]string{"test"})
|
|
if err != nil {
|
|
t.Fatalf("%v: Walk(%s) failed, err: %v", s, "test", err)
|
|
}
|
|
defer l.Close()
|
|
if _, _, _, err := l.Open(flags); err != nil {
|
|
t.Fatalf("%v: Open(%v) failed, err: %v", s, flags, err)
|
|
}
|
|
for _, dupFlags := range allOpenFlags {
|
|
t.Logf("Original flags: %v, dup flags: %v", flags, dupFlags)
|
|
_, dup, err := l.Walk([]string{})
|
|
if err != nil {
|
|
t.Fatalf("%v: Walk(<empty>) failed: %v", s, err)
|
|
}
|
|
defer dup.Close()
|
|
fd, _, _, err := dup.Open(dupFlags)
|
|
if err != nil {
|
|
t.Fatalf("%v: Open(%v) failed: %v", s, flags, err)
|
|
}
|
|
if fd != nil {
|
|
defer fd.Close()
|
|
}
|
|
if err := testReadWrite(dup, dupFlags, want); err != nil {
|
|
t.Fatalf("%v: testReadWrite(%v) failed: %v", s, dupFlags, err)
|
|
}
|
|
}
|
|
}
|
|
})
|
|
}
|
|
|
|
func TestUnopened(t *testing.T) {
|
|
runCustom(t, []uint32{unix.S_IFREG}, allConfs, func(t *testing.T, s state) {
|
|
b := []byte("foobar")
|
|
if _, err := s.file.WriteAt(b, 0); err != unix.EBADF {
|
|
t.Errorf("%v: WriteAt() should have failed, got: %v, expected: unix.EBADF", s, err)
|
|
}
|
|
if _, err := s.file.ReadAt(b, 0); err != unix.EBADF {
|
|
t.Errorf("%v: ReadAt() should have failed, got: %v, expected: unix.EBADF", s, err)
|
|
}
|
|
if _, err := s.file.Readdir(0, 100); err != unix.EBADF {
|
|
t.Errorf("%v: Readdir() should have failed, got: %v, expected: unix.EBADF", s, err)
|
|
}
|
|
if err := s.file.FSync(); err != unix.EBADF {
|
|
t.Errorf("%v: FSync() should have failed, got: %v, expected: unix.EBADF", s, err)
|
|
}
|
|
})
|
|
}
|
|
|
|
// TestOpenOPath is a regression test to ensure that a file that cannot be open
|
|
// for read is allowed to be open. This was happening because the control file
|
|
// was open with O_PATH, but Open() was not checking for it and allowing the
|
|
// control file to be reused.
|
|
func TestOpenOPath(t *testing.T) {
|
|
runCustom(t, []uint32{unix.S_IFREG}, rwConfs, func(t *testing.T, s state) {
|
|
// Fist remove all permissions on the file.
|
|
if err := s.file.SetAttr(p9.SetAttrMask{Permissions: true}, p9.SetAttr{Permissions: p9.FileMode(0)}); err != nil {
|
|
t.Fatalf("SetAttr(): %v", err)
|
|
}
|
|
// Then walk to the file again to open a new control file.
|
|
filename := filepath.Base(s.file.hostPath)
|
|
_, newFile, err := s.root.Walk([]string{filename})
|
|
if err != nil {
|
|
t.Fatalf("root.Walk(%q): %v", filename, err)
|
|
}
|
|
|
|
if newFile.(*localFile).controlReadable {
|
|
t.Fatalf("control file didn't open with O_PATH: %+v", newFile)
|
|
}
|
|
if _, _, _, err := newFile.Open(p9.ReadOnly); err != unix.EACCES {
|
|
t.Fatalf("Open() should have failed, got: %v, wanted: EACCES", err)
|
|
}
|
|
})
|
|
}
|
|
|
|
func SetGetAttr(l *localFile, valid p9.SetAttrMask, attr p9.SetAttr) (p9.Attr, error) {
|
|
if err := l.SetAttr(valid, attr); err != nil {
|
|
return p9.Attr{}, err
|
|
}
|
|
_, _, a, err := l.GetAttr(p9.AttrMask{})
|
|
if err != nil {
|
|
return p9.Attr{}, err
|
|
}
|
|
return a, nil
|
|
}
|
|
|
|
func TestSetAttrPerm(t *testing.T) {
|
|
runCustom(t, allTypes, rwConfs, func(t *testing.T, s state) {
|
|
valid := p9.SetAttrMask{Permissions: true}
|
|
attr := p9.SetAttr{Permissions: 0777}
|
|
got, err := SetGetAttr(s.file, valid, attr)
|
|
if s.fileType == unix.S_IFLNK {
|
|
if err == nil {
|
|
t.Fatalf("%v: SetGetAttr(valid, %v) should have failed", s, attr.Permissions)
|
|
}
|
|
} else {
|
|
if err != nil {
|
|
t.Fatalf("%v: SetGetAttr(valid, %v) failed, err: %v", s, attr.Permissions, err)
|
|
}
|
|
if got.Mode.Permissions() != attr.Permissions {
|
|
t.Errorf("%v: wrong permission, got: %v, expected: %v", s, got.Mode.Permissions(), attr.Permissions)
|
|
}
|
|
}
|
|
})
|
|
}
|
|
|
|
func TestSetAttrSize(t *testing.T) {
|
|
runCustom(t, allTypes, rwConfs, func(t *testing.T, s state) {
|
|
for _, size := range []uint64{1024, 0, 1024 * 1024} {
|
|
valid := p9.SetAttrMask{Size: true}
|
|
attr := p9.SetAttr{Size: size}
|
|
got, err := SetGetAttr(s.file, valid, attr)
|
|
if s.fileType == unix.S_IFLNK || s.fileType == unix.S_IFDIR {
|
|
if err == nil {
|
|
t.Fatalf("%v: SetGetAttr(valid, %v) should have failed", s, attr.Permissions)
|
|
}
|
|
// Run for one size only, they will all fail the same way.
|
|
return
|
|
}
|
|
if err != nil {
|
|
t.Fatalf("%v: SetGetAttr(valid, %v) failed, err: %v", s, attr.Size, err)
|
|
}
|
|
if got.Size != size {
|
|
t.Errorf("%v: wrong size, got: %v, expected: %v", s, got.Size, size)
|
|
}
|
|
}
|
|
})
|
|
}
|
|
|
|
func TestSetAttrTime(t *testing.T) {
|
|
runCustom(t, allTypes, rwConfs, func(t *testing.T, s state) {
|
|
valid := p9.SetAttrMask{ATime: true, ATimeNotSystemTime: true}
|
|
attr := p9.SetAttr{ATimeSeconds: 123, ATimeNanoSeconds: 456}
|
|
got, err := SetGetAttr(s.file, valid, attr)
|
|
if err != nil {
|
|
t.Fatalf("%v: SetGetAttr(valid, %v:%v) failed, err: %v", s, attr.ATimeSeconds, attr.ATimeNanoSeconds, err)
|
|
}
|
|
if got.ATimeSeconds != 123 {
|
|
t.Errorf("%v: wrong ATimeSeconds, got: %v, expected: %v", s, got.ATimeSeconds, 123)
|
|
}
|
|
if got.ATimeNanoSeconds != 456 {
|
|
t.Errorf("%v: wrong ATimeNanoSeconds, got: %v, expected: %v", s, got.ATimeNanoSeconds, 456)
|
|
}
|
|
|
|
valid = p9.SetAttrMask{MTime: true, MTimeNotSystemTime: true}
|
|
attr = p9.SetAttr{MTimeSeconds: 789, MTimeNanoSeconds: 012}
|
|
got, err = SetGetAttr(s.file, valid, attr)
|
|
if err != nil {
|
|
t.Fatalf("%v: SetGetAttr(valid, %v:%v) failed, err: %v", s, attr.MTimeSeconds, attr.MTimeNanoSeconds, err)
|
|
}
|
|
if got.MTimeSeconds != 789 {
|
|
t.Errorf("%v: wrong MTimeSeconds, got: %v, expected: %v", s, got.MTimeSeconds, 789)
|
|
}
|
|
if got.MTimeNanoSeconds != 012 {
|
|
t.Errorf("%v: wrong MTimeNanoSeconds, got: %v, expected: %v", s, got.MTimeNanoSeconds, 012)
|
|
}
|
|
})
|
|
}
|
|
|
|
func TestSetAttrOwner(t *testing.T) {
|
|
if os.Getuid() != 0 {
|
|
t.Skipf("SetAttr(owner) test requires CAP_CHOWN, running as %d", os.Getuid())
|
|
}
|
|
|
|
runCustom(t, allTypes, rwConfs, func(t *testing.T, s state) {
|
|
newUID := os.Getuid() + 1
|
|
valid := p9.SetAttrMask{UID: true}
|
|
attr := p9.SetAttr{UID: p9.UID(newUID)}
|
|
got, err := SetGetAttr(s.file, valid, attr)
|
|
if err != nil {
|
|
t.Fatalf("%v: SetGetAttr(valid, %v) failed, err: %v", s, attr.UID, err)
|
|
}
|
|
if got.UID != p9.UID(newUID) {
|
|
t.Errorf("%v: wrong uid, got: %v, expected: %v", s, got.UID, newUID)
|
|
}
|
|
})
|
|
}
|
|
|
|
func TestLink(t *testing.T) {
|
|
if os.Getuid() != 0 {
|
|
t.Skipf("Link test requires CAP_DAC_READ_SEARCH, running as %d", os.Getuid())
|
|
}
|
|
runCustom(t, allTypes, rwConfs, func(t *testing.T, s state) {
|
|
const dirName = "linkdir"
|
|
const linkFile = "link"
|
|
if _, err := s.root.Mkdir(dirName, 0777, p9.UID(os.Getuid()), p9.GID(os.Getgid())); err != nil {
|
|
t.Fatalf("%v: MkDir(%s) failed, err: %v", s, dirName, err)
|
|
}
|
|
_, dir, err := s.root.Walk([]string{dirName})
|
|
if err != nil {
|
|
t.Fatalf("%v: Walk({%s}) failed, err: %v", s, dirName, err)
|
|
}
|
|
|
|
err = dir.Link(s.file, linkFile)
|
|
if s.fileType == unix.S_IFDIR {
|
|
if err != unix.EPERM {
|
|
t.Errorf("%v: Link(target, %s) should have failed, got: %v, expected: unix.EPERM", s, linkFile, err)
|
|
}
|
|
return
|
|
}
|
|
if err != nil {
|
|
t.Errorf("%v: Link(target, %s) failed, err: %v", s, linkFile, err)
|
|
}
|
|
})
|
|
}
|
|
|
|
func TestROMountChecks(t *testing.T) {
|
|
const want = unix.EROFS
|
|
uid := p9.UID(os.Getuid())
|
|
gid := p9.GID(os.Getgid())
|
|
|
|
runCustom(t, allTypes, roConfs, func(t *testing.T, s state) {
|
|
if s.fileType != unix.S_IFLNK {
|
|
if _, _, _, err := s.file.Open(p9.WriteOnly); err != want {
|
|
t.Errorf("Open() should have failed, got: %v, expected: %v", err, want)
|
|
}
|
|
if _, _, _, err := s.file.Open(p9.ReadWrite); err != want {
|
|
t.Errorf("Open() should have failed, got: %v, expected: %v", err, want)
|
|
}
|
|
if _, _, _, err := s.file.Open(p9.ReadOnly | p9.OpenTruncate); err != want {
|
|
t.Errorf("Open() should have failed, got: %v, expected: %v", err, want)
|
|
}
|
|
f, _, _, err := s.file.Open(p9.ReadOnly)
|
|
if err != nil {
|
|
t.Errorf("Open() failed: %v", err)
|
|
}
|
|
if f != nil {
|
|
_ = f.Close()
|
|
}
|
|
}
|
|
|
|
if _, _, _, _, err := s.file.Create("some_file", p9.ReadWrite, 0777, uid, gid); err != want {
|
|
t.Errorf("Create() should have failed, got: %v, expected: %v", err, want)
|
|
}
|
|
if _, err := s.file.Mkdir("some_dir", 0777, uid, gid); err != want {
|
|
t.Errorf("MkDir() should have failed, got: %v, expected: %v", err, want)
|
|
}
|
|
if err := s.file.RenameAt("some_file", s.file, "other_file"); err != want {
|
|
t.Errorf("Rename() should have failed, got: %v, expected: %v", err, want)
|
|
}
|
|
if _, err := s.file.Symlink("some_place", "some_symlink", uid, gid); err != want {
|
|
t.Errorf("Symlink() should have failed, got: %v, expected: %v", err, want)
|
|
}
|
|
if err := s.file.UnlinkAt("some_file", 0); err != want {
|
|
t.Errorf("UnlinkAt() should have failed, got: %v, expected: %v", err, want)
|
|
}
|
|
if err := s.file.Link(s.file, "some_link"); err != want {
|
|
t.Errorf("Link() should have failed, got: %v, expected: %v", err, want)
|
|
}
|
|
if _, err := s.file.Mknod("some-nod", 0777, 1, 2, uid, gid); err != want {
|
|
t.Errorf("Mknod() should have failed, got: %v, expected: %v", err, want)
|
|
}
|
|
|
|
valid := p9.SetAttrMask{Size: true}
|
|
attr := p9.SetAttr{Size: 0}
|
|
if err := s.file.SetAttr(valid, attr); err != want {
|
|
t.Errorf("SetAttr() should have failed, got: %v, expected: %v", err, want)
|
|
}
|
|
})
|
|
}
|
|
|
|
func TestWalkNotFound(t *testing.T) {
|
|
runCustom(t, []uint32{unix.S_IFDIR}, allConfs, func(t *testing.T, s state) {
|
|
if _, _, err := s.file.Walk([]string{"nobody-here"}); err != unix.ENOENT {
|
|
t.Errorf("%v: Walk(%q) should have failed, got: %v, expected: unix.ENOENT", s, "nobody-here", err)
|
|
}
|
|
})
|
|
}
|
|
|
|
func TestWalkDup(t *testing.T) {
|
|
runAll(t, func(t *testing.T, s state) {
|
|
_, dup, err := s.file.Walk([]string{})
|
|
if err != nil {
|
|
t.Fatalf("%v: Walk(nil) failed, err: %v", s, err)
|
|
}
|
|
// Check that 'dup' is usable.
|
|
if _, _, _, err := dup.GetAttr(p9.AttrMask{}); err != nil {
|
|
t.Errorf("%v: GetAttr() failed, err: %v", s, err)
|
|
}
|
|
})
|
|
}
|
|
|
|
func TestReaddir(t *testing.T) {
|
|
runCustom(t, []uint32{unix.S_IFDIR}, rwConfs, func(t *testing.T, s state) {
|
|
name := "dir"
|
|
if _, err := s.file.Mkdir(name, 0777, p9.UID(os.Getuid()), p9.GID(os.Getgid())); err != nil {
|
|
t.Fatalf("%v: MkDir(%s) failed, err: %v", s, name, err)
|
|
}
|
|
name = "symlink"
|
|
if _, err := s.file.Symlink("/some/target", name, p9.UID(os.Getuid()), p9.GID(os.Getgid())); err != nil {
|
|
t.Fatalf("%v: Symlink(%q) failed, err: %v", s, name, err)
|
|
}
|
|
name = "file"
|
|
_, f, _, _, err := s.file.Create(name, p9.ReadWrite, 0555, p9.UID(os.Getuid()), p9.GID(os.Getgid()))
|
|
if err != nil {
|
|
t.Fatalf("%v: createFile(root, %q) failed, err: %v", s, name, err)
|
|
}
|
|
f.Close()
|
|
|
|
if _, _, _, err := s.file.Open(p9.ReadOnly); err != nil {
|
|
t.Fatalf("%v: Open(ReadOnly) failed, err: %v", s, err)
|
|
}
|
|
|
|
dirents, err := s.file.Readdir(0, 10)
|
|
if err != nil {
|
|
t.Fatalf("%v: Readdir(0, 10) failed, err: %v", s, err)
|
|
}
|
|
if len(dirents) != 3 {
|
|
t.Fatalf("%v: Readdir(0, 10) wrong number of items, got: %v, expected: 3", s, len(dirents))
|
|
}
|
|
var dir, symlink, file bool
|
|
for _, d := range dirents {
|
|
switch d.Name {
|
|
case "dir":
|
|
if d.Type != p9.TypeDir {
|
|
t.Errorf("%v: dirent.Type got: %v, expected: %v", s, d.Type, p9.TypeDir)
|
|
}
|
|
dir = true
|
|
case "symlink":
|
|
if d.Type != p9.TypeSymlink {
|
|
t.Errorf("%v: dirent.Type got: %v, expected: %v", s, d.Type, p9.TypeSymlink)
|
|
}
|
|
symlink = true
|
|
case "file":
|
|
if d.Type != p9.TypeRegular {
|
|
t.Errorf("%v: dirent.Type got: %v, expected: %v", s, d.Type, p9.TypeRegular)
|
|
}
|
|
file = true
|
|
default:
|
|
t.Errorf("%v: dirent.Name got: %v", s, d.Name)
|
|
}
|
|
|
|
_, f, err := s.file.Walk([]string{d.Name})
|
|
if err != nil {
|
|
t.Fatalf("%v: Walk({%s}) failed, err: %v", s, d.Name, err)
|
|
}
|
|
_, _, a, err := f.GetAttr(p9.AttrMask{})
|
|
if err != nil {
|
|
t.Fatalf("%v: GetAttr() failed, err: %v", s, err)
|
|
}
|
|
if d.Type != a.Mode.QIDType() {
|
|
t.Errorf("%v: dirent.Type different than GetAttr().Mode.QIDType(), got: %v, expected: %v", s, d.Type, a.Mode.QIDType())
|
|
}
|
|
}
|
|
if !dir || !symlink || !file {
|
|
t.Errorf("%v: Readdir(0, 10) wrong files returned, dir: %v, symlink: %v, file: %v", s, dir, symlink, file)
|
|
}
|
|
})
|
|
}
|
|
|
|
// Test that attach point can be written to when it points to a file, e.g.
|
|
// /etc/hosts.
|
|
func TestAttachFile(t *testing.T) {
|
|
conf := Config{ROMount: false}
|
|
dir, err := ioutil.TempDir("", "root-")
|
|
if err != nil {
|
|
t.Fatalf("ioutil.TempDir() failed, err: %v", err)
|
|
}
|
|
defer os.RemoveAll(dir)
|
|
|
|
path := path.Join(dir, "test")
|
|
if _, err := os.Create(path); err != nil {
|
|
t.Fatalf("os.Create(%q) failed, err: %v", path, err)
|
|
}
|
|
|
|
a, err := NewAttachPoint(path, conf)
|
|
if err != nil {
|
|
t.Fatalf("NewAttachPoint failed: %v", err)
|
|
}
|
|
root, err := a.Attach()
|
|
if err != nil {
|
|
t.Fatalf("Attach failed, err: %v", err)
|
|
}
|
|
|
|
if _, _, _, err := root.Open(p9.ReadWrite); err != nil {
|
|
t.Fatalf("Open(ReadWrite) failed, err: %v", err)
|
|
}
|
|
defer root.Close()
|
|
|
|
b := []byte("foobar")
|
|
w, err := root.WriteAt(b, 0)
|
|
if err != nil {
|
|
t.Fatalf("Write() failed, err: %v", err)
|
|
}
|
|
if w != len(b) {
|
|
t.Fatalf("Write() was partial, got: %d, expected: %d", w, len(b))
|
|
}
|
|
rBuf := make([]byte, len(b))
|
|
r, err := root.ReadAt(rBuf, 0)
|
|
if err != nil {
|
|
t.Fatalf("ReadAt() failed, err: %v", err)
|
|
}
|
|
if r != len(rBuf) {
|
|
t.Fatalf("ReadAt() was partial, got: %d, expected: %d", r, len(rBuf))
|
|
}
|
|
if string(rBuf) != "foobar" {
|
|
t.Fatalf("ReadAt() wrong data, got: %s, expected: %s", string(rBuf), "foobar")
|
|
}
|
|
}
|
|
|
|
func TestAttachInvalidType(t *testing.T) {
|
|
dir, err := ioutil.TempDir("", "attach-")
|
|
if err != nil {
|
|
t.Fatalf("ioutil.TempDir() failed, err: %v", err)
|
|
}
|
|
defer os.RemoveAll(dir)
|
|
|
|
fifo := filepath.Join(dir, "fifo")
|
|
if err := unix.Mkfifo(fifo, 0755); err != nil {
|
|
t.Fatalf("Mkfifo(%q): %v", fifo, err)
|
|
}
|
|
|
|
dirFile, err := os.Open(dir)
|
|
if err != nil {
|
|
t.Fatalf("Open(%s): %v", dir, err)
|
|
}
|
|
defer dirFile.Close()
|
|
|
|
// Bind a socket via /proc to be sure that a length of a socket path
|
|
// is less than UNIX_PATH_MAX.
|
|
socket := filepath.Join(fmt.Sprintf("/proc/self/fd/%d", dirFile.Fd()), "socket")
|
|
l, err := net.Listen("unix", socket)
|
|
if err != nil {
|
|
t.Fatalf("net.Listen(unix, %q): %v", socket, err)
|
|
}
|
|
defer l.Close()
|
|
|
|
for _, tc := range []struct {
|
|
name string
|
|
path string
|
|
}{
|
|
{name: "fifo", path: fifo},
|
|
{name: "socket", path: socket},
|
|
} {
|
|
t.Run(tc.name, func(t *testing.T) {
|
|
conf := Config{ROMount: false}
|
|
a, err := NewAttachPoint(tc.path, conf)
|
|
if err != nil {
|
|
t.Fatalf("NewAttachPoint failed: %v", err)
|
|
}
|
|
f, err := a.Attach()
|
|
if f != nil || err == nil {
|
|
t.Fatalf("Attach should have failed, got (%v, %v)", f, err)
|
|
}
|
|
})
|
|
}
|
|
}
|
|
|
|
func TestDoubleAttachError(t *testing.T) {
|
|
conf := Config{ROMount: false}
|
|
root, err := ioutil.TempDir("", "root-")
|
|
if err != nil {
|
|
t.Fatalf("ioutil.TempDir() failed, err: %v", err)
|
|
}
|
|
defer os.RemoveAll(root)
|
|
a, err := NewAttachPoint(root, conf)
|
|
if err != nil {
|
|
t.Fatalf("NewAttachPoint failed: %v", err)
|
|
}
|
|
|
|
if _, err := a.Attach(); err != nil {
|
|
t.Fatalf("Attach failed: %v", err)
|
|
}
|
|
if _, err := a.Attach(); err == nil {
|
|
t.Fatalf("Attach should have failed, got %v want non-nil", err)
|
|
}
|
|
}
|
|
|
|
func TestTruncate(t *testing.T) {
|
|
runCustom(t, []uint32{unix.S_IFDIR}, rwConfs, func(t *testing.T, s state) {
|
|
child, err := createFile(s.file, "test")
|
|
if err != nil {
|
|
t.Fatalf("createFile() failed: %v", err)
|
|
}
|
|
defer child.Close()
|
|
want := []byte("foobar")
|
|
w, err := child.WriteAt(want, 0)
|
|
if err != nil {
|
|
t.Fatalf("Write() failed: %v", err)
|
|
}
|
|
if w != len(want) {
|
|
t.Fatalf("Write() was partial, got: %d, expected: %d", w, len(want))
|
|
}
|
|
|
|
_, l, err := s.file.Walk([]string{"test"})
|
|
if err != nil {
|
|
t.Fatalf("Walk(%s) failed: %v", "test", err)
|
|
}
|
|
if _, _, _, err := l.Open(p9.ReadOnly | p9.OpenTruncate); err != nil {
|
|
t.Fatalf("Open() failed: %v", err)
|
|
}
|
|
_, mask, attr, err := l.GetAttr(p9.AttrMask{Size: true})
|
|
if err != nil {
|
|
t.Fatalf("GetAttr() failed: %v", err)
|
|
}
|
|
if !mask.Size {
|
|
t.Fatalf("GetAttr() didn't return size: %+v", mask)
|
|
}
|
|
if attr.Size != 0 {
|
|
t.Fatalf("truncate didn't work, want: 0, got: %d", attr.Size)
|
|
}
|
|
})
|
|
}
|
|
|
|
func TestMknod(t *testing.T) {
|
|
runCustom(t, []uint32{unix.S_IFDIR}, rwConfs, func(t *testing.T, s state) {
|
|
_, err := s.file.Mknod("test", p9.ModeRegular|0777, 1, 2, p9.UID(os.Getuid()), p9.GID(os.Getgid()))
|
|
if err != nil {
|
|
t.Fatalf("Mknod() failed: %v", err)
|
|
}
|
|
|
|
_, f, err := s.file.Walk([]string{"test"})
|
|
if err != nil {
|
|
t.Fatalf("Walk() failed: %v", err)
|
|
}
|
|
fd, _, _, err := f.Open(p9.ReadWrite)
|
|
if err != nil {
|
|
t.Fatalf("Open() failed: %v", err)
|
|
}
|
|
if fd != nil {
|
|
defer fd.Close()
|
|
}
|
|
if err := testReadWrite(f, p9.ReadWrite, nil); err != nil {
|
|
t.Fatalf("testReadWrite() failed: %v", err)
|
|
}
|
|
})
|
|
}
|