github.com/cryptogateway/go-paymex@v0.0.0-20210204174735-96277fb1e602/cmd/utils/diskusage.go (about)

     1  // Copyright 2021 The go-ethereum Authors
     2  // This file is part of the go-ethereum library.
     3  //
     4  // The go-ethereum library is free software: you can redistribute it and/or modify
     5  // it under the terms of the GNU Lesser General Public License as published by
     6  // the Free Software Foundation, either version 3 of the License, or
     7  // (at your option) any later version.
     8  //
     9  // The go-ethereum library is distributed in the hope that it will be useful,
    10  // but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  // MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
    12  // GNU Lesser General Public License for more details.
    13  //
    14  // You should have received a copy of the GNU Lesser General Public License
    15  // along with the go-ethereum library. If not, see <http://www.gnu.org/licenses/>.
    16  
    17  // +build !windows
    18  
    19  package utils
    20  
    21  import (
    22  	"fmt"
    23  
    24  	"golang.org/x/sys/unix"
    25  )
    26  
    27  func getFreeDiskSpace(path string) (uint64, error) {
    28  	var stat unix.Statfs_t
    29  	if err := unix.Statfs(path, &stat); err != nil {
    30  		return 0, fmt.Errorf("failed to call Statfs: %v", err)
    31  	}
    32  
    33  	// Available blocks * size per block = available space in bytes
    34  	return stat.Bavail * uint64(stat.Bsize), nil
    35  }