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// Copyright 2015 The appc 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.
// +build linux freebsd netbsd openbsd
package tarheader
import (
"archive/tar"
"io/ioutil"
"os"
"path/filepath"
"syscall"
"testing"
)
// mknod requires privilege ...
func TestHeaderUnixDev(t *testing.T) {
hExpect := tar.Header{
Name: "./dev/test0",
Size: 0,
Typeflag: tar.TypeBlock,
Devminor: 5,
Devmajor: 233,
}
// make our test block device
var path string
{
var err error
path, err = ioutil.TempDir("", "tarheader-test-")
if err != nil {
t.Fatal(err)
}
defer os.RemoveAll(path)
if err := os.Mkdir(filepath.Join(path, "dev"), os.FileMode(0755)); err != nil {
t.Fatal(err)
}
mode := uint32(hExpect.Mode&07777) | syscall.S_IFBLK
dev := uint32(((hExpect.Devminor & 0xfff00) << 12) | ((hExpect.Devmajor & 0xfff) << 8) | (hExpect.Devminor & 0xff))
if err := syscall.Mknod(filepath.Join(path, hExpect.Name), mode, int(dev)); err != nil {
if err == syscall.EPERM {
t.Skip("no permission to CAP_MKNOD")
}
t.Fatal(err)
}
}
fi, err := os.Stat(filepath.Join(path, hExpect.Name))
if err != nil {
t.Fatal(err)
}
hGot := tar.Header{
Name: "./dev/test0",
Size: 0,
Typeflag: tar.TypeBlock,
}
seen := map[uint64]string{}
populateHeaderUnix(&hGot, fi, seen)
if hGot.Devminor != hExpect.Devminor {
t.Errorf("dev minor: got %d, expected %d", hGot.Devminor, hExpect.Devminor)
}
if hGot.Devmajor != hExpect.Devmajor {
t.Errorf("dev major: got %d, expected %d", hGot.Devmajor, hExpect.Devmajor)
}
}
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