github.com/Mirantis/virtlet@v1.5.2-0.20191204181327-1659b8a48e9b/pkg/fs/fsstat_linux.go (about)

     1  // +build linux
     2  
     3  /*
     4  Copyright 2019 Mirantis
     5  
     6  Licensed under the Apache License, Version 2.0 (the "License");
     7  you may not use this file except in compliance with the License.
     8  You may obtain a copy of the License at
     9  
    10      http://www.apache.org/licenses/LICENSE-2.0
    11  
    12  Unless required by applicable law or agreed to in writing, software
    13  distributed under the License is distributed on an "AS IS" BASIS,
    14  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
    15  See the License for the specific language governing permissions and
    16  limitations under the License.
    17  */
    18  
    19  package fs
    20  
    21  import (
    22  	"syscall"
    23  )
    24  
    25  // GetFsStatsForPath returns the info about inode usage and space usage
    26  // (in bytes) for the filesystem that contains the provided path.
    27  func GetFsStatsForPath(path string) (uint64, uint64, error) {
    28  	fs := syscall.Statfs_t{}
    29  	if err := syscall.Statfs(path, &fs); err != nil {
    30  		return 0, 0, err
    31  	}
    32  	return (fs.Blocks - fs.Bfree) * uint64(fs.Bsize), fs.Files - fs.Ffree, nil
    33  }