minio/cmd/posix_unix_test.go

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// +build linux darwin dragonfly freebsd netbsd openbsd
/*
* MinIO Cloud Storage, (C) 2016 MinIO, Inc.
*
* 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 cmd
import (
"io/ioutil"
"os"
"path"
"syscall"
"testing"
)
// Based on `man getumask` a vaporware GNU extension to glibc.
// returns file mode creation mask.
func getUmask() int {
mask := syscall.Umask(0)
syscall.Umask(mask)
return mask
}
// Tests if the directory and file creations happen with proper umask.
func TestIsValidUmaskVol(t *testing.T) {
tmpPath, err := ioutil.TempDir(globalTestTmpDir, "minio-")
if err != nil {
t.Fatalf("Initializing temporary directory failed with %s.", err)
}
testCases := []struct {
volName string
expectedUmask int
}{
{"is-this-valid", getUmask()},
}
testCase := testCases[0]
// Initialize a new posix layer.
disk, err := newPosix(tmpPath, "")
if err != nil {
t.Fatalf("Initializing posix failed with %s.", err)
}
// Attempt to create a volume to verify the permissions later.
// MakeVol creates 0777.
if err = disk.MakeVol(testCase.volName); err != nil {
t.Fatalf("Creating a volume failed with %s expected to pass.", err)
}
defer os.RemoveAll(tmpPath)
// Stat to get permissions bits.
st, err := os.Stat(path.Join(tmpPath, testCase.volName))
if err != nil {
t.Fatalf("Stat failed with %s expected to pass.", err)
}
// Get umask of the bits stored.
currentUmask := 0777 - uint32(st.Mode().Perm())
// Verify if umask is correct.
if int(currentUmask) != testCase.expectedUmask {
t.Fatalf("Umask check failed expected %d, got %d", testCase.expectedUmask, currentUmask)
}
}
// Tests if the file creations happen with proper umask.
func TestIsValidUmaskFile(t *testing.T) {
tmpPath, err := ioutil.TempDir(globalTestTmpDir, "minio-")
if err != nil {
t.Fatalf("Initializing temporary directory failed with %s.", err)
}
testCases := []struct {
volName string
expectedUmask int
}{
{"is-this-valid", getUmask()},
}
testCase := testCases[0]
// Initialize a new posix layer.
disk, err := newPosix(tmpPath, "")
if err != nil {
t.Fatalf("Initializing posix failed with %s.", err)
}
// Attempt to create a volume to verify the permissions later.
// MakeVol creates directory with 0777 perms.
if err = disk.MakeVol(testCase.volName); err != nil {
t.Fatalf("Creating a volume failed with %s expected to pass.", err)
}
defer os.RemoveAll(tmpPath)
// Attempt to create a file to verify the permissions later.
// AppendFile creates file with 0666 perms.
if err = disk.AppendFile(testCase.volName, "hello-world.txt", []byte("Hello World")); err != nil {
t.Fatalf("Create a file `test` failed with %s expected to pass.", err)
}
// StatFile - stat the file.
fi, err := disk.StatFile(testCase.volName, "hello-world.txt")
if err != nil {
t.Fatalf("Stat failed with %s expected to pass.", err)
}
// Get umask of the bits stored.
currentUmask := 0666 - uint32(fi.Mode.Perm())
// Verify if umask is correct.
if int(currentUmask) != testCase.expectedUmask {
t.Fatalf("Umask check failed expected %d, got %d", testCase.expectedUmask, currentUmask)
}
}