From c1dbbf34c3ba15e32319ca4ac5c397f3cb9e947e Mon Sep 17 00:00:00 2001
From: Malte Poll <mp@edgeless.systems>
Date: Fri, 19 May 2023 14:30:46 +0200
Subject: [PATCH] cryptsetup: Provide implementation without cgo

---
 internal/cryptsetup/BUILD.bazel                   |  5 ++++-
 internal/cryptsetup/crypsetup_cross.go            | 15 +++++++++++++++
 .../{cryptsetup.go => cryptsetup_cgo.go}          |  2 ++
 3 files changed, 21 insertions(+), 1 deletion(-)
 create mode 100644 internal/cryptsetup/crypsetup_cross.go
 rename internal/cryptsetup/{cryptsetup.go => cryptsetup_cgo.go} (94%)

diff --git a/internal/cryptsetup/BUILD.bazel b/internal/cryptsetup/BUILD.bazel
index e9884f1d4..2def0d584 100644
--- a/internal/cryptsetup/BUILD.bazel
+++ b/internal/cryptsetup/BUILD.bazel
@@ -2,7 +2,10 @@ load("@io_bazel_rules_go//go:def.bzl", "go_library")
 
 go_library(
     name = "cryptsetup",
-    srcs = ["cryptsetup.go"],
+    srcs = [
+        "crypsetup_cross.go",
+        "cryptsetup_cgo.go",
+    ],
     # keep
     cdeps = [
         "@//rpm:cryptsetup",
diff --git a/internal/cryptsetup/crypsetup_cross.go b/internal/cryptsetup/crypsetup_cross.go
new file mode 100644
index 000000000..c56d62b8f
--- /dev/null
+++ b/internal/cryptsetup/crypsetup_cross.go
@@ -0,0 +1,15 @@
+//go:build !linux || !cgo
+
+/*
+Copyright (c) Edgeless Systems GmbH
+
+SPDX-License-Identifier: AGPL-3.0-only
+*/
+package cryptsetup
+
+const (
+	// ReadWriteQueueBypass is a flag to disable the write and read workqueues for a crypt device.
+	ReadWriteQueueBypass          = cryptActivateNoReadWorkqueue | cryptActivateNoWriteWorkqueue
+	cryptActivateNoReadWorkqueue  = 0x1000000
+	cryptActivateNoWriteWorkqueue = 0x2000000
+)
diff --git a/internal/cryptsetup/cryptsetup.go b/internal/cryptsetup/cryptsetup_cgo.go
similarity index 94%
rename from internal/cryptsetup/cryptsetup.go
rename to internal/cryptsetup/cryptsetup_cgo.go
index 80c4a6bca..eddb820ea 100644
--- a/internal/cryptsetup/cryptsetup.go
+++ b/internal/cryptsetup/cryptsetup_cgo.go
@@ -1,3 +1,5 @@
+//go:build linux && cgo
+
 /*
 Copyright (c) Edgeless Systems GmbH