fix(usb_mass_storage): should use path instead of configPath (#272)

Author: ym

internal/usbgadget/config.go

@@ -128,6 +128,15 @@ func (u *UsbGadget) GetConfigPath(itemKey string) (string, error) {
 	return joinPath(u.kvmGadgetPath, item.configPath), nil
 }
 
+// GetPath returns the path to the item.
+func (u *UsbGadget) GetPath(itemKey string) (string, error) {
+	item, ok := u.configMap[itemKey]
+	if !ok {
+		return "", fmt.Errorf("config item %s not found", itemKey)
+	}
+	return joinPath(u.kvmGadgetPath, item.path), nil
+}
+
 func mountConfigFS() error {
 	_, err := os.Stat(gadgetPath)
 	// TODO: check if it's mounted properly

usb_mass_storage.go

@@ -15,9 +15,9 @@ import (
 	"time"
 
 	"github.com/gin-gonic/gin"
-	"github.com/psanford/httpreadat"
 	"github.com/google/uuid"
 	"github.com/pion/webrtc/v4"
+	"github.com/psanford/httpreadat"
 
 	"github.com/jetkvm/kvm/resource"
 )
@@ -27,7 +27,7 @@ func writeFile(path string, data string) error {
 }
 
 func setMassStorageImage(imagePath string) error {
-	massStorageFunctionPath, err := gadget.GetConfigPath("mass_storage_lun0")
+	massStorageFunctionPath, err := gadget.GetPath("mass_storage_lun0")
 	if err != nil {
 		return fmt.Errorf("failed to get mass storage path: %w", err)
 	}
@@ -39,7 +39,7 @@ func setMassStorageImage(imagePath string) error {
 }
 
 func setMassStorageMode(cdrom bool) error {
-	massStorageFunctionPath, err := gadget.GetConfigPath("mass_storage_lun0")
+	massStorageFunctionPath, err := gadget.GetPath("mass_storage_lun0")
 	if err != nil {
 		return fmt.Errorf("failed to get mass storage path: %w", err)
 	}
@@ -110,7 +110,7 @@ func rpcMountBuiltInImage(filename string) error {
 }
 
 func getMassStorageMode() (bool, error) {
-	massStorageFunctionPath, err := gadget.GetConfigPath("mass_storage_lun0")
+	massStorageFunctionPath, err := gadget.GetPath("mass_storage_lun0")
 	if err != nil {
 		return false, fmt.Errorf("failed to get mass storage path: %w", err)
 	}