if mountinfo not found, use mounts

disk/disk_linux.go

@@ -227,8 +227,17 @@ func PartitionsWithContext(ctx context.Context, all bool) ([]PartitionStat, erro
 	filename := common.HostProc("self/mountinfo")
 	lines, err := common.ReadLines(filename)
 	if err != nil {
+		UseMounts := true
+	}
+
+	//if kernel not support self/mountinfo
+	if UseMounts {
+		filename := common.HostProc("self/mounts")
+		lines, err := common.ReadLines(filename)
+		if err != nil {
 			return nil, err
 		}
+	}
 
 	fs, err := getFileSystems()
 	if err != nil {
@@ -243,6 +252,16 @@ func PartitionsWithContext(ctx context.Context, all bool) ([]PartitionStat, erro
 		// (1) (2) (3)   (4)   (5)      (6)      (7)   (8) (9)   (10)         (11)
 
 		// split the mountinfo line by the separator hyphen
+		if UseMounts {
+			fields := strings.Fields(line)
+
+			d := PartitionStat{
+				Device:     fields[0],
+				Mountpoint: unescapeFstab(fields[1]),
+				Fstype:     fields[2],
+				Opts:       fields[3],
+			}
+		} else {
 			parts := strings.Split(line, " - ")
 			if len(parts) != 2 {
 				return nil, fmt.Errorf("found invalid mountinfo line in file %s: %s ", filename, line)
@@ -263,6 +282,9 @@ func PartitionsWithContext(ctx context.Context, all bool) ([]PartitionStat, erro
 				Fstype:     fstype,
 				Opts:       mountOpts,
 			}
+		}
+
+		if UseMounts {
 			if all == false {
 				if d.Device == "none" || !common.StringsHas(fs, d.Fstype) {
 					continue
@@ -277,6 +299,7 @@ func PartitionsWithContext(ctx context.Context, all bool) ([]PartitionStat, erro
 				}
 				d.Device = strings.Replace(d.Device, "root", filepath.Base(devpath), 1)
 			}
+		}
 		ret = append(ret, d)
 	}