rc: add core/disks to enumerate attached disks

fs/rc/disks.go

@@ -0,0 +1,14 @@
+//go:build !(netbsd && 386)
+
+package rc
+
+import "github.com/shirou/gopsutil/v4/disk"
+
+// getMounts returns a slice of disk mount points
+func getMounts() (mounts []string) {
+	partitions, _ := disk.Partitions(false)
+	for _, partition := range partitions {
+		mounts = append(mounts, partition.Mountpoint)
+	}
+	return mounts
+}

fs/rc/disks_unsupported.go

@@ -0,0 +1,8 @@
+//go:build netbsd && 386
+
+package rc
+
+// getMounts returns a slice of disk mount points
+func getMounts() (mounts []string) {
+	return []string{"/"}
+}

fs/rc/internal.go

@@ -614,3 +614,53 @@ func rcRunCommand(ctx context.Context, in Params) (out Params, err error) {
 	err = cmd.Run()
 	return nil, err
 }
+
+func init() {
+	Add(Call{
+		Path:  "core/disks",
+		Fn:    rcDisks,
+		Title: "List the local disks",
+		Help: `This does not take any parameters
+
+This call is for rclone GUI programs to enumerate local disks and
+important directories for doing transfers to and from. The list
+returned will include the root directory and the user's home directory
+and any mounted disks. The returned items should be usable directly as
+remotes.
+
+Returns:
+
+- disks
+    - This is an array of strings of local disk names
+`,
+	})
+}
+
+// Disks returns likely local disks and some other useful positions
+func rcDisks(ctx context.Context, in Params) (out Params, err error) {
+	disks := []string{}
+	home, err := os.UserHomeDir()
+	tidy := func(s string) string {
+		if s != "/" {
+			s, _ = strings.CutSuffix(s, "/")
+		}
+		return s
+	}
+	if err == nil {
+		disks = append(disks, tidy(home))
+	}
+	for _, mount := range getMounts() {
+		mount = tidy(mount)
+		if runtime.GOOS == "linux" {
+			if strings.HasPrefix(mount, "/snap/") || strings.HasPrefix(mount, "/var/snap/") || strings.HasPrefix(mount, "/boot/") || mount == "/boot" {
+				// ignore boring mounts
+				continue
+			}
+		}
+		disks = append(disks, mount)
+	}
+	out = Params{
+		"disks": disks,
+	}
+	return out, nil
+}

fs/rc/internal_test.go

@@ -199,3 +199,23 @@ func TestCoreCommand(t *testing.T) {
 		test("unknown_command", "STREAM", version+errorString, true)
 	})
 }
+
+// core/disks: Tests local disks
+func TestCoreDisks(t *testing.T) {
+	call := Calls.Get("core/disks")
+	assert.NotNil(t, call)
+	in := Params{}
+	out, err := call.Fn(context.Background(), in)
+	require.NoError(t, err)
+	require.NotNil(t, out)
+	require.NotNil(t, out["disks"])
+	disks, ok := out["disks"].([]string)
+	require.True(t, ok)
+	assert.True(t, len(disks) >= 2)
+	for _, disk := range disks {
+		assert.NotEqual(t, disk, "")
+		if disk != "/" {
+			assert.False(t, strings.HasSuffix(disk, "/"))
+		}
+	}
+}