Update module github.com/cyphar/filepath-securejoin to v0.3.0

Signed-off-by: renovate[bot] <29139614+renovate[bot]@users.noreply.github.com>

vendor/github.com/cyphar/filepath-securejoin/testing_mocks_linux.go

@@ -0,0 +1,68 @@
+//go:build linux
+
+// Copyright (C) 2024 SUSE LLC. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+package securejoin
+
+import (
+	"os"
+	"testing"
+)
+
+type forceGetProcRootLevel int
+
+const (
+	forceGetProcRootDefault             forceGetProcRootLevel = iota
+	forceGetProcRootOpenTree                                  // force open_tree()
+	forceGetProcRootOpenTreeAtRecursive                       // force open_tree(AT_RECURSIVE)
+	forceGetProcRootUnsafe                                    // force open()
+)
+
+var testingForceGetProcRoot *forceGetProcRootLevel
+
+func testingCheckClose(check bool, f *os.File) bool {
+	if check {
+		if f != nil {
+			_ = f.Close()
+		}
+		return true
+	}
+	return false
+}
+
+func testingForcePrivateProcRootOpenTree(f *os.File) bool {
+	return testing.Testing() && testingForceGetProcRoot != nil &&
+		testingCheckClose(*testingForceGetProcRoot >= forceGetProcRootOpenTree, f)
+}
+
+func testingForcePrivateProcRootOpenTreeAtRecursive(f *os.File) bool {
+	return testing.Testing() && testingForceGetProcRoot != nil &&
+		testingCheckClose(*testingForceGetProcRoot >= forceGetProcRootOpenTreeAtRecursive, f)
+}
+
+func testingForceGetProcRootUnsafe(f *os.File) bool {
+	return testing.Testing() && testingForceGetProcRoot != nil &&
+		testingCheckClose(*testingForceGetProcRoot >= forceGetProcRootUnsafe, f)
+}
+
+type forceProcThreadSelfLevel int
+
+const (
+	forceProcThreadSelfDefault forceProcThreadSelfLevel = iota
+	forceProcSelfTask
+	forceProcSelf
+)
+
+var testingForceProcThreadSelf *forceProcThreadSelfLevel
+
+func testingForceProcSelfTask() bool {
+	return testing.Testing() && testingForceProcThreadSelf != nil &&
+		*testingForceProcThreadSelf >= forceProcSelfTask
+}
+
+func testingForceProcSelf() bool {
+	return testing.Testing() && testingForceProcThreadSelf != nil &&
+		*testingForceProcThreadSelf >= forceProcSelf
+}