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// Copyright 2021 The go-ethereum Authors
// This file is part of go-ethereum.
//
// go-ethereum 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.
//
// go-ethereum 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 go-ethereum. If not, see <http://www.gnu.org/licenses/>.
//go:build !windows && !openbsd
// +build !windows,!openbsd
package utils
import (
"fmt"
"golang.org/x/sys/unix"
)
func getFreeDiskSpace(path string) (uint64, error) {
var stat unix.Statfs_t
if err := unix.Statfs(path, &stat); err != nil {
return 0, fmt.Errorf("failed to call Statfs: %v", err)
}
// Available blocks * size per block = available space in bytes
var bavail = stat.Bavail
// nolint:staticcheck
if stat.Bavail < 0 {
// FreeBSD can have a negative number of blocks available
// because of the grace limit.
bavail = 0
}
//nolint:unconvert
return uint64(bavail) * uint64(stat.Bsize), nil
}