minio/cmd/xl-storage_unix_test.go

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// +build linux darwin dragonfly freebsd netbsd openbsd
// Copyright (c) 2015-2021 MinIO, Inc.
//
// This file is part of MinIO Object Storage stack
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU Affero General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
//
// This program is distributed in the hope that it will be useful
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU Affero General Public License for more details.
//
// You should have received a copy of the GNU Affero General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package cmd
import (
"context"
"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 xlStorage layer.
disk, err := newLocalXLStorage(tmpPath)
if err != nil {
t.Fatalf("Initializing xlStorage failed with %s.", err)
}
// Attempt to create a volume to verify the permissions later.
// MakeVol creates 0777.
if err = disk.MakeVol(context.Background(), 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 xlStorage layer.
disk, err := newLocalXLStorage(tmpPath)
if err != nil {
t.Fatalf("Initializing xlStorage failed with %s.", err)
}
// Attempt to create a volume to verify the permissions later.
// MakeVol creates directory with 0777 perms.
if err = disk.MakeVol(context.Background(), 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(context.Background(), testCase.volName, pathJoin("hello-world.txt", xlStorageFormatFile), []byte("Hello World")); err != nil {
t.Fatalf("Create a file `test` failed with %s expected to pass.", err)
}
// CheckFile - stat the file.
if _, err := disk.StatInfoFile(context.Background(), testCase.volName, "hello-world.txt/"+xlStorageFormatFile); err != nil {
t.Fatalf("Stat failed with %s expected to pass.", err)
}
}