fuse/main.go

@@ -7,11 +7,39 @@ import (
     "syscall"
 	"github.com/hanwen/go-fuse/v2/fs"
 	"github.com/hanwen/go-fuse/v2/fuse"
+	"strconv"
 )
 
+func (i *Device) HeartRateBytes() ([]byte, error) {
+	v, err := i.HeartRate()
+	return []byte(strconv.Itoa(int(v)) + "\n"), err
+}
+func (i *Device) BatteryLevelBytes() ([]byte, error) {
+	v, err := i.BatteryLevel()
+	return []byte(strconv.Itoa(int(v)) + "\n"), err
+}
+func (i *Device) StepCountBytes() ([]byte, error) {
+	v, err := i.StepCount()
+	return []byte(strconv.Itoa(int(v)) + "\n"), err
+}
+func (i *Device) MotionBytes() ([]byte, error) {
+	v, err := i.Motion()
+	return []byte(strconv.Itoa(int(v.X)) + " " + strconv.Itoa(int(v.Y)) + " " + strconv.Itoa(int(v.Z)) + "\n"), err
+}
+func (i *Device) AddressBytes() ([]byte, error) {
+	v := i.Address()
+	return []byte(v + "\n"), nil
+}
+func (i *Device) VersionBytes() ([]byte, error) {
+	v, err := i.Version()
+	return []byte(v + "\n"), err
+}
+
+
 type ITProperty struct {
 	name string
 	Ino uint64
+	f func() ([]byte, error)
 }
 
 type ITNode struct {
@@ -21,12 +49,12 @@ type ITNode struct {
 }
 
 var properties = []ITProperty {
-	ITProperty{"heartrate", 2},
-	ITProperty{"battery", 3},
-	ITProperty{"motion", 4},
-	ITProperty{"stepcount", 5},
-	ITProperty{"version", 6},
-	ITProperty{"address", 7},
+	ITProperty{"heartrate", 2, nil},
+	ITProperty{"battery", 3, nil},
+	ITProperty{"motion", 4, nil},
+	ITProperty{"stepcount", 5, nil},
+	ITProperty{"version", 6, nil},
+	ITProperty{"address", 7, nil},
 }
 
 var _ = (fs.NodeReaddirer)((*ITNode)(nil))
@@ -132,8 +160,13 @@ func (f *ITNode) Open(ctx context.Context, openFlags uint32) (fh fs.FileHandle,
 
 		for _, value := range properties {
 			if value.Ino == f.Ino {
+				ans, err := value.f()
+				if err != nil {
+					return nil, 0, syscall.EROFS
+				}
+
 				fh = &bytesFileHandle{
-					content: []byte(value.name),
+					content: ans,
 				}
 				return fh, fuse.FOPEN_DIRECT_IO, 0
 			}
@@ -157,6 +190,15 @@ func main() {
 		log.Panic(err)
 	}
 
+	dev := Device{};
+
+	properties[0].f = dev.HeartRateBytes;
+	properties[1].f = dev.BatteryLevelBytes;
+	properties[2].f = dev.MotionBytes;
+	properties[3].f = dev.StepCountBytes;
+	properties[4].f = dev.VersionBytes;
+	properties[5].f = dev.AddressBytes;
+
 	log.Printf("Mounted on %s", mntDir)
 	log.Printf("Unmount by calling 'fusermount -u %s'", mntDir)
 

fuse/mock.go

@@ -0,0 +1,35 @@
+package main
+
+type Device struct {
+
+}
+
+func (i *Device) HeartRate() (uint8, error) {
+	return 10, nil
+}
+
+func (i *Device) BatteryLevel() (uint8, error) {
+	return 95, nil
+}
+
+func (i *Device) StepCount() (uint32, error) {
+	return 27000, nil
+}
+
+type MotionValues struct {
+	X int16
+	Y int16
+	Z int16
+}
+
+func (i *Device) Motion() (MotionValues, error) {
+	return MotionValues{-12, +64, -19}, nil
+}
+
+func (i *Device) Address() string {
+	return "FA:E4:00:00:00:00"
+}
+
+func (i *Device) Version() (string, error) {
+	return "1.11.0", nil
+}