storj.io/minio@v0.0.0-20230509071714-0cbc90f649b1/pkg/disk/stat_linux.go (about)

     1  //go:build linux && !s390x && !arm && !386
     2  // +build linux,!s390x,!arm,!386
     3  
     4  /*
     5   * MinIO Cloud Storage, (C) 2015, 2016, 2017 MinIO, Inc.
     6   *
     7   * Licensed under the Apache License, Version 2.0 (the "License");
     8   * you may not use this file except in compliance with the License.
     9   * You may obtain a copy of the License at
    10   *
    11   *     http://www.apache.org/licenses/LICENSE-2.0
    12   *
    13   * Unless required by applicable law or agreed to in writing, software
    14   * distributed under the License is distributed on an "AS IS" BASIS,
    15   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    16   * See the License for the specific language governing permissions and
    17   * limitations under the License.
    18   */
    19  
    20  package disk
    21  
    22  import (
    23  	"fmt"
    24  	"syscall"
    25  )
    26  
    27  // GetInfo returns total and free bytes available in a directory, e.g. `/`.
    28  func GetInfo(path string) (info Info, err error) {
    29  	s := syscall.Statfs_t{}
    30  	err = syscall.Statfs(path, &s)
    31  	if err != nil {
    32  		return Info{}, err
    33  	}
    34  	reservedBlocks := s.Bfree - s.Bavail
    35  	info = Info{
    36  		Total:  uint64(s.Frsize) * (s.Blocks - reservedBlocks),
    37  		Free:   uint64(s.Frsize) * s.Bavail,
    38  		Files:  s.Files,
    39  		Ffree:  s.Ffree,
    40  		FSType: getFSType(int64(s.Type)),
    41  	}
    42  	// Check for overflows.
    43  	// https://github.com/minio/minio/issues/8035
    44  	// XFS can show wrong values at times error out
    45  	// in such scenarios.
    46  	if info.Free > info.Total {
    47  		return info, fmt.Errorf("detected free space (%d) > total disk space (%d), fs corruption at (%s). please run 'fsck'", info.Free, info.Total, path)
    48  	}
    49  	info.Used = info.Total - info.Free
    50  	return info, nil
    51  }