From f5d5a7f647245d9e447d130e5ee9cc1776a9da93 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?=E4=B8=96=E7=95=8C?= <i@sekai.icu>
Date: Sat, 16 May 2026 11:32:24 +0800
Subject: [PATCH] usbip: gate serverImportLease so unsupported-target builds
 compile

control_protocol.go was ungated but referenced ExportLeaseIdentity
from host.go (linux || (darwin && cgo)), breaking the stub-register
contract on Windows and darwin && !cgo. Move serverImportLease and
importLeaseTTL into export_ledger.go alongside their only consumers.
---
 service/usbip/control_protocol.go | 13 -------------
 service/usbip/export_ledger.go    | 15 ++++++++++++++-
 2 files changed, 14 insertions(+), 14 deletions(-)

diff --git a/service/usbip/control_protocol.go b/service/usbip/control_protocol.go
index bd0e9559b..49bfbce12 100644
--- a/service/usbip/control_protocol.go
+++ b/service/usbip/control_protocol.go
@@ -6,7 +6,6 @@ import (
 	"io"
 	"slices"
 	"strings"
-	"time"
 
 	E "github.com/sagernet/sing/common/exceptions"
 )
@@ -47,8 +46,6 @@ const (
 	leaseErrorBadRequest  = "bad_request"
 	leaseErrorUnavailable = "unavailable"
 	leaseErrorBusy        = "busy"
-
-	importLeaseTTL = 10 * time.Second
 )
 
 var controlPreface = [controlPrefaceSize]byte{'S', 'B', 'U', 'S', 'B', 'I', 'P', '1'}
@@ -121,16 +118,6 @@ type controlLeaseResponse struct {
 	ErrorMessage string `json:"error_message,omitempty"`
 }
 
-type serverImportLease struct {
-	ID           uint64
-	SubscriberID uint64
-	BusID        string
-	ClientNonce  uint64
-	Generation   uint64
-	Identity     ExportLeaseIdentity
-	Expires      time.Time
-}
-
 // controlReader reuses its payload scratch across successive reads on a
 // single connection. The returned payload is only valid until the next call.
 type controlReader struct {
diff --git a/service/usbip/export_ledger.go b/service/usbip/export_ledger.go
index 2739701e3..2dd9b65b2 100644
--- a/service/usbip/export_ledger.go
+++ b/service/usbip/export_ledger.go
@@ -45,7 +45,20 @@ type exportSubscriber struct {
 	send         chan controlMessage
 }
 
-const controlSubscriberSendBuffer = 16
+type serverImportLease struct {
+	ID           uint64
+	SubscriberID uint64
+	BusID        string
+	ClientNonce  uint64
+	Generation   uint64
+	Identity     ExportLeaseIdentity
+	Expires      time.Time
+}
+
+const (
+	controlSubscriberSendBuffer = 16
+	importLeaseTTL              = 10 * time.Second
+)
 
 func newExportLedger(logger log.ContextLogger, ttl time.Duration, now func() time.Time) *exportLedger {
 	if now == nil {