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ALR/internal/utils/utils.go

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// ALR - Any Linux Repository
// Copyright (C) 2025 The ALR Authors
//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU 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 General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <http://www.gnu.org/licenses/>.
package utils
import (
"os"
"os/exec"
"strings"
"golang.org/x/sys/unix"
)
func NoNewPrivs() error {
return unix.Prctl(unix.PR_SET_NO_NEW_PRIVS, 1, 0, 0, 0)
}
// EnsureTempDirWithRootOwner создает каталог в /tmp/alr с правами для группы wheel
// Все каталоги в /tmp/alr принадлежат root:wheel с правами 775
// Для других каталогов использует стандартные права
func EnsureTempDirWithRootOwner(path string, mode os.FileMode) error {
if strings.HasPrefix(path, "/tmp/alr") {
// Сначала создаем директорию обычным способом
err := os.MkdirAll(path, mode)
if err != nil {
return err
}
// Все каталоги в /tmp/alr доступны для группы wheel
// Устанавливаем setgid бит (2775), чтобы новые файлы наследовали группу
permissions := "2775"
group := "wheel"
// Устанавливаем права с setgid битом
err = exec.Command("sudo", "chmod", permissions, path).Run()
if err != nil {
return err
}
// Устанавливаем владельца root:wheel
return exec.Command("sudo", "chown", "root:"+group, path).Run()
}
// Для остальных каталогов обычное создание
return os.MkdirAll(path, mode)
}