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// 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 p9
import (
"os"
"testing"
)
func TestFileModeHelpers(t *testing.T) {
fns := map[FileMode]struct {
// name identifies the file mode.
name string
// function is the function that should return true given the
// right FileMode.
function func(m FileMode) bool
}{
ModeRegular: {
name: "regular",
function: FileMode.IsRegular,
},
ModeDirectory: {
name: "directory",
function: FileMode.IsDir,
},
ModeNamedPipe: {
name: "named pipe",
function: FileMode.IsNamedPipe,
},
ModeCharacterDevice: {
name: "character device",
function: FileMode.IsCharacterDevice,
},
ModeBlockDevice: {
name: "block device",
function: FileMode.IsBlockDevice,
},
ModeSymlink: {
name: "symlink",
function: FileMode.IsSymlink,
},
ModeSocket: {
name: "socket",
function: FileMode.IsSocket,
},
}
for mode, info := range fns {
// Make sure the mode doesn't identify as anything but itself.
for testMode, testfns := range fns {
if mode != testMode && testfns.function(mode) {
t.Errorf("Mode %s returned true when asked if it was mode %s", info.name, testfns.name)
}
}
// Make sure mode identifies as itself.
if !info.function(mode) {
t.Errorf("Mode %s returned false when asked if it was itself", info.name)
}
}
}
func TestFileModeToQID(t *testing.T) {
for _, test := range []struct {
// name identifies the test.
name string
// mode is the FileMode we start out with.
mode FileMode
// want is the corresponding QIDType we expect.
want QIDType
}{
{
name: "Directories are of type directory",
mode: ModeDirectory,
want: TypeDir,
},
{
name: "Sockets are append-only files",
mode: ModeSocket,
want: TypeAppendOnly,
},
{
name: "Named pipes are append-only files",
mode: ModeNamedPipe,
want: TypeAppendOnly,
},
{
name: "Character devices are append-only files",
mode: ModeCharacterDevice,
want: TypeAppendOnly,
},
{
name: "Symlinks are of type symlink",
mode: ModeSymlink,
want: TypeSymlink,
},
{
name: "Regular files are of type regular",
mode: ModeRegular,
want: TypeRegular,
},
{
name: "Block devices are regular files",
mode: ModeBlockDevice,
want: TypeRegular,
},
} {
if qidType := test.mode.QIDType(); qidType != test.want {
t.Errorf("ModeToQID test %s failed: got %o, wanted %o", test.name, qidType, test.want)
}
}
}
func TestP9ModeConverters(t *testing.T) {
for _, m := range []FileMode{
ModeRegular,
ModeDirectory,
ModeCharacterDevice,
ModeBlockDevice,
ModeSocket,
ModeSymlink,
ModeNamedPipe,
} {
if mb := ModeFromOS(m.OSMode()); mb != m {
t.Errorf("Converting %o to OS.FileMode gives %o and is converted back as %o", m, m.OSMode(), mb)
}
}
}
func TestOSModeConverters(t *testing.T) {
// Modes that can be converted back and forth.
for _, m := range []os.FileMode{
0, // Regular file.
os.ModeDir,
os.ModeCharDevice | os.ModeDevice,
os.ModeDevice,
os.ModeSocket,
os.ModeSymlink,
os.ModeNamedPipe,
} {
if mb := ModeFromOS(m).OSMode(); mb != m {
t.Errorf("Converting %o to p9.FileMode gives %o and is converted back as %o", m, ModeFromOS(m), mb)
}
}
// Modes that will be converted to a regular file since p9 cannot
// express these.
for _, m := range []os.FileMode{
os.ModeAppend,
os.ModeExclusive,
os.ModeTemporary,
} {
if p9Mode := ModeFromOS(m); p9Mode != ModeRegular {
t.Errorf("Converting %o to p9.FileMode should have given ModeRegular, but yielded %o", m, p9Mode)
}
}
}
func TestAttrMaskContains(t *testing.T) {
req := AttrMask{Mode: true, Size: true}
have := AttrMask{}
if have.Contains(req) {
t.Fatalf("AttrMask %v should not be a superset of %v", have, req)
}
have.Mode = true
if have.Contains(req) {
t.Fatalf("AttrMask %v should not be a superset of %v", have, req)
}
have.Size = true
have.MTime = true
if !have.Contains(req) {
t.Fatalf("AttrMask %v should be a superset of %v", have, req)
}
}
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