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81 lines
2.2 KiB
81 lines
2.2 KiB
4 years ago
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// +build linux,arm linux,386
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/*
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* MinIO Cloud Storage, (C) 2020 MinIO, Inc.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package disk
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import (
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"fmt"
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"strconv"
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"syscall"
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)
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// fsType2StringMap - list of filesystems supported on linux
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var fsType2StringMap = map[string]string{
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"1021994": "TMPFS",
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"137d": "EXT",
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"4244": "HFS",
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"4d44": "MSDOS",
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"52654973": "REISERFS",
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"5346544e": "NTFS",
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"58465342": "XFS",
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"61756673": "AUFS",
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"6969": "NFS",
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"ef51": "EXT2OLD",
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"ef53": "EXT4",
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"f15f": "ecryptfs",
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"794c7630": "overlayfs",
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"2fc12fc1": "zfs",
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"ff534d42": "cifs",
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"53464846": "wslfs",
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}
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// getFSType returns the filesystem type of the underlying mounted filesystem
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func getFSType(ftype int32) string {
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fsTypeHex := strconv.FormatInt(int64(ftype), 16)
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fsTypeString, ok := fsType2StringMap[fsTypeHex]
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if !ok {
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return "UNKNOWN"
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}
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return fsTypeString
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}
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// GetInfo returns total and free bytes available in a directory, e.g. `/`.
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func GetInfo(path string) (info Info, err error) {
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s := syscall.Statfs_t{}
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err = syscall.Statfs(path, &s)
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if err != nil {
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return Info{}, err
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}
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reservedBlocks := s.Bfree - s.Bavail
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info = Info{
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Total: uint64(s.Frsize) * (s.Blocks - reservedBlocks),
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Free: uint64(s.Frsize) * s.Bavail,
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Files: s.Files,
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Ffree: s.Ffree,
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FSType: getFSType(s.Type),
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}
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// Check for overflows.
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// https://github.com/minio/minio/issues/8035
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// XFS can show wrong values at times error out
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// in such scenarios.
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if info.Free > info.Total {
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return info, fmt.Errorf("detected free space (%d) > total disk space (%d), fs corruption at (%s). please run 'fsck'", info.Free, info.Total, path)
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}
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return info, nil
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}
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