//go:build (linux && arm) || (linux && 386)// +build linux,arm linux,386// 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 diskimport ( "fmt" "strconv" "syscall")// fsType2StringMap - list of filesystems supported on linuxvar fsType2StringMap = map[string]string{ "1021994": "TMPFS", "137d": "EXT", "4244": "HFS", "4d44": "MSDOS", "52654973": "REISERFS", "5346544e": "NTFS", "58465342": "XFS", "61756673": "AUFS", "6969": "NFS", "ef51": "EXT2OLD", "ef53": "EXT4", "f15f": "ecryptfs", "794c7630": "overlayfs", "2fc12fc1": "zfs", "ff534d42": "cifs", "53464846": "wslfs",}// getFSType returns the filesystem type of the underlying mounted filesystemfunc getFSType(ftype int32) string { fsTypeHex := strconv.FormatInt(int64(ftype), 16) fsTypeString, ok := fsType2StringMap[fsTypeHex] if !ok { return "UNKNOWN" } return fsTypeString}// GetInfo returns total and free bytes available in a directory, e.g. `/`.func GetInfo(path string) (info Info, err error) { s := syscall.Statfs_t{} err = syscall.Statfs(path, &s) if err != nil { return Info{}, err } reservedBlocks := s.Bfree - s.Bavail info = Info{ Total: uint64(s.Frsize) * (s.Blocks - reservedBlocks), Free: uint64(s.Frsize) * s.Bavail, Files: s.Files, Ffree: s.Ffree, FSType: getFSType(s.Type), } // Check for overflows. // https://github.com/minio/minio/issues/8035 // XFS can show wrong values at times error out // in such scenarios. if info.Free > info.Total { return info, fmt.Errorf("detected free space (%d) > total disk space (%d), fs corruption at (%s). please run 'fsck'", info.Free, info.Total, path) } info.Used = info.Total - info.Free return info, nil}
//go:build (linux && arm) || (linux && 386)
// +build linux,arm linux,386
// 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 disk
import (
"fmt"
"strconv"
"syscall"
)
// fsType2StringMap - list of filesystems supported on linux
var fsType2StringMap = map[string]string{
"1021994": "TMPFS",
"137d": "EXT",
"4244": "HFS",
"4d44": "MSDOS",
"52654973": "REISERFS",
"5346544e": "NTFS",
"58465342": "XFS",
"61756673": "AUFS",
"6969": "NFS",
"ef51": "EXT2OLD",
"ef53": "EXT4",
"f15f": "ecryptfs",
"794c7630": "overlayfs",
"2fc12fc1": "zfs",
"ff534d42": "cifs",
"53464846": "wslfs",
}
// getFSType returns the filesystem type of the underlying mounted filesystem
func getFSType(ftype int32) string {
fsTypeHex := strconv.FormatInt(int64(ftype), 16)
fsTypeString, ok := fsType2StringMap[fsTypeHex]
if !ok {
return "UNKNOWN"
}
return fsTypeString
}
// GetInfo returns total and free bytes available in a directory, e.g. `/`.
func GetInfo(path string) (info Info, err error) {
s := syscall.Statfs_t{}
err = syscall.Statfs(path, &s)
if err != nil {
return Info{}, err
}
reservedBlocks := s.Bfree - s.Bavail
info = Info{
Total: uint64(s.Frsize) * (s.Blocks - reservedBlocks),
Free: uint64(s.Frsize) * s.Bavail,
Files: s.Files,
Ffree: s.Ffree,
FSType: getFSType(s.Type),
}
// Check for overflows.
// https://github.com/minio/minio/issues/8035
// XFS can show wrong values at times error out
// in such scenarios.
if info.Free > info.Total {
return info, fmt.Errorf("detected free space (%d) > total disk space (%d), fs corruption at (%s). please run 'fsck'", info.Free, info.Total, path)
}
info.Used = info.Total - info.Free
return info, nil
}