disk_unix.go

Documentation: github.com/shirou/gopsutil/disk

     1  // +build freebsd linux darwin
     2  
     3  package disk
     4  
     5  import (
     6  	"context"
     7  	"strconv"
     8  
     9  	"golang.org/x/sys/unix"
    10  )
    11  
    12  func UsageWithContext(ctx context.Context, path string) (*UsageStat, error) {
    13  	stat := unix.Statfs_t{}
    14  	err := unix.Statfs(path, &stat)
    15  	if err != nil {
    16  		return nil, err
    17  	}
    18  	bsize := stat.Bsize
    19  
    20  	ret := &UsageStat{
    21  		Path:        unescapeFstab(path),
    22  		Fstype:      getFsType(stat),
    23  		Total:       (uint64(stat.Blocks) * uint64(bsize)),
    24  		Free:        (uint64(stat.Bavail) * uint64(bsize)),
    25  		InodesTotal: (uint64(stat.Files)),
    26  		InodesFree:  (uint64(stat.Ffree)),
    27  	}
    28  
    29  	// if could not get InodesTotal, return empty
    30  	if ret.InodesTotal < ret.InodesFree {
    31  		return ret, nil
    32  	}
    33  
    34  	ret.InodesUsed = (ret.InodesTotal - ret.InodesFree)
    35  	ret.Used = (uint64(stat.Blocks) - uint64(stat.Bfree)) * uint64(bsize)
    36  
    37  	if ret.InodesTotal == 0 {
    38  		ret.InodesUsedPercent = 0
    39  	} else {
    40  		ret.InodesUsedPercent = (float64(ret.InodesUsed) / float64(ret.InodesTotal)) * 100.0
    41  	}
    42  
    43  	if (ret.Used + ret.Free) == 0 {
    44  		ret.UsedPercent = 0
    45  	} else {
    46  		// We don't use ret.Total to calculate percent.
    47  		// see https://github.com/shirou/gopsutil/issues/562
    48  		ret.UsedPercent = (float64(ret.Used) / float64(ret.Used+ret.Free)) * 100.0
    49  	}
    50  
    51  	return ret, nil
    52  }
    53  
    54  // Unescape escaped octal chars (like space 040, ampersand 046 and backslash 134) to their real value in fstab fields issue#555
    55  func unescapeFstab(path string) string {
    56  	escaped, err := strconv.Unquote(`"` + path + `"`)
    57  	if err != nil {
    58  		return path
    59  	}
    60  	return escaped
    61  }
    62
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