1// +build freebsd linux darwin
2
3package disk
4
5import (
6	"context"
7	"strconv"
8
9	"golang.org/x/sys/unix"
10)
11
12func 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
55func unescapeFstab(path string) string {
56	escaped, err := strconv.Unquote(`"` + path + `"`)
57	if err != nil {
58		return path
59	}
60	return escaped
61}
62