fix hid

internal/client/socket_linux.go

@@ -42,7 +42,10 @@ func createVHCIAttachment(_ context.Context, granted *protocol.DeviceGranted, _
 		return nil, -1, fmt.Errorf("VHCI attach: %w", err)
 	}
 
-	// The VHCI driver now owns vhciFD, so we don't close it
+	// The VHCI driver holds a kernel reference to the socket via sockfd_lookup,
+	// so we can close our copy of the fd to avoid leaking it.
+	unix.Close(vhciFD)
+
 	// Create a net.Conn from the tunnel FD
 	tunnelFile := fdToFile(tunnelFD, "usb-tunnel")
 	tunnelConn, err := net.FileConn(tunnelFile)
@@ -74,9 +77,9 @@ func fdToFile(fd int, name string) *os.File {
 }
 
 // fixVHCIDevicePermissions waits for the VHCI-attached device to create
-// device nodes (e.g. /dev/video*) and sets them to world-accessible.
-// VHCI-created devices don't get normal udev rules applied, so they
-// default to root-only access.
+// device nodes (e.g. /dev/video*, /dev/input/event*, /dev/hidraw*) and sets
+// them to world-accessible. VHCI-created devices don't get normal udev
+// rules applied, so they default to root-only access.
 func fixVHCIDevicePermissions(port int) {
 	// Wait for the device to finish enumerating and create device nodes.
 	// The kernel needs time to enumerate descriptors and bind drivers.
@@ -101,12 +104,13 @@ func fixVHCIDevicePermissions(port int) {
 				if err := os.Chmod(devPath, 0666); err == nil {
 					log.Printf("[use] set permissions 0666 on %s", devPath)
 					found = true
+				} else {
+					log.Printf("[use] chmod %s failed: %v", devPath, err)
 				}
 			}
 
 			// sound devices → /dev/snd/*
 			if parent == "sound" && strings.HasPrefix(d.Name(), "card") {
-				// For sound cards, chmod all related device nodes
 				sndDir := filepath.Join(path, "device")
 				if _, err := os.Stat(sndDir); err == nil {
 					filepath.WalkDir("/dev/snd", func(sndPath string, sd os.DirEntry, err error) error {
@@ -123,6 +127,20 @@ func fixVHCIDevicePermissions(port int) {
 				devPath := "/dev/input/" + d.Name()
 				if err := os.Chmod(devPath, 0666); err == nil {
 					log.Printf("[use] set permissions 0666 on %s", devPath)
+					found = true
+				} else {
+					log.Printf("[use] chmod %s failed: %v", devPath, err)
+				}
+			}
+
+			// hidraw devices → /dev/hidrawN
+			if parent == "hidraw" && strings.HasPrefix(d.Name(), "hidraw") {
+				devPath := "/dev/" + d.Name()
+				if err := os.Chmod(devPath, 0666); err == nil {
+					log.Printf("[use] set permissions 0666 on %s", devPath)
+					found = true
+				} else {
+					log.Printf("[use] chmod %s failed: %v", devPath, err)
 				}
 			}
 
@@ -133,4 +151,6 @@ func fixVHCIDevicePermissions(port int) {
 			return
 		}
 	}
+
+	log.Printf("[use] fixVHCIDevicePermissions: no device nodes found after 7.5s (port %d)", port)
 }

internal/usbip/server.go

@@ -414,16 +414,11 @@ func (s *Server) handleCmdSubmit(r io.Reader, hdr *URBHeader, retChan chan<- []b
 			// device's endpoint state without updating the kernel's internal USB
 			// subsystem, breaking all subsequent SETINTERFACE and SUBMITURB calls
 			// (ESRCH / EHOSTUNREACH).
-			// Just reset host-side data toggles to DATA0 (matching the fresh VHCI
-			// state on the use-side) and return success.
-			log.Printf("[usbip-server] SET_CONFIGURATION(%d) intercepted (device already configured), resetting endpoint toggles", wValue)
-			for epNum := range s.epTypes {
-				if epNum == 0 {
-					continue
-				}
-				s.handle.ResetEndpoint(uint32(epNum))
-				s.handle.ResetEndpoint(uint32(epNum) | 0x80)
-			}
+			// Do NOT reset host-side data toggles either: after DisconnectClaimInterface
+			// the host and device toggles are already in sync. Resetting host-side
+			// toggles to DATA0 would create a mismatch (device still at its current
+			// toggle), causing the first interrupt packet to be silently discarded.
+			log.Printf("[usbip-server] SET_CONFIGURATION(%d) intercepted (device already configured)", wValue)
 
 		default:
 			// Generic OUT control transfer
@@ -647,9 +642,27 @@ func (s *Server) reapLoop(retChan chan<- []byte, done <-chan struct{}) {
 			continue
 		}
 
+		dirStr := "OUT"
+		if pending.direction == DirIn {
+			dirStr = "IN"
+		}
+		urbType := s.getURBType(uint8(pending.endpoint))
+		typeNames := map[uint8]string{0: "ISO", 1: "INT", 2: "CTRL", 3: "BULK"}
+
 		if urbInfo.Status != 0 {
-			log.Printf("[usbip-server] URB completed: seq=%d ep=%d status=%d actual=%d iso=%v",
-				pending.seqNum, pending.endpoint, urbInfo.Status, urbInfo.ActualLength, pending.isISO)
+			log.Printf("[usbip-server] URB completed: seq=%d EP%d %s type=%s status=%d actual=%d",
+				pending.seqNum, pending.endpoint, dirStr, typeNames[urbType], urbInfo.Status, urbInfo.ActualLength)
+		} else if urbType == 1 { // interrupt — always log for HID debugging
+			hexStr := ""
+			if pending.direction == DirIn && urbInfo.ActualLength > 0 {
+				n := int(urbInfo.ActualLength)
+				if n > 16 {
+					n = 16
+				}
+				hexStr = fmt.Sprintf(" data=%x", pending.buffer[:n])
+			}
+			log.Printf("[usbip-server] INT completed: seq=%d EP%d %s actual=%d%s",
+				pending.seqNum, pending.endpoint, dirStr, urbInfo.ActualLength, hexStr)
 		}
 
 		var resp []byte