From 66bfd4d9fef5df871348964526b64b700ee6a19c Mon Sep 17 00:00:00 2001
From: Jakob Unterwurzacher
Date: Thu, 19 Jun 2025 13:44:18 +0200
Subject: testing: reverse: factor out newReverseFS

Will be used soon in a new gitignore test.

Relates-to: https://github.com/rfjakob/gocryptfs/issues/927
---
 tests/reverse/main_test.go | 32 ++++++++++++++++++++------------
 1 file changed, 20 insertions(+), 12 deletions(-)

diff --git a/tests/reverse/main_test.go b/tests/reverse/main_test.go
index 2fc9e5e..142e3eb 100644
--- a/tests/reverse/main_test.go
+++ b/tests/reverse/main_test.go
@@ -40,23 +40,14 @@ func TestMain(m *testing.M) {
 		{false, true},
 	}
 	for i, tc := range testcases {
-		argsA := []string{"-reverse"}
+		// Fill the global vars
 		plaintextnames, deterministic_names = tc.plaintextnames, tc.deterministic_names
-		if tc.plaintextnames {
-			argsA = append(argsA, "-plaintextnames")
-		} else if tc.deterministic_names {
-			argsA = append(argsA, "-deterministic-names")
-		}
-		dirA = test_helpers.InitFS(nil, argsA...)
-		dirB = test_helpers.TmpDir + "/b"
+
+		dirA, dirB, _ = newReverseFS(nil)
 		dirC = test_helpers.TmpDir + "/c"
-		if err := os.Mkdir(dirB, 0700); err != nil {
-			panic(err)
-		}
 		if err := os.Mkdir(dirC, 0700); err != nil {
 			panic(err)
 		}
-		test_helpers.MountOrExit(dirA, dirB, "-reverse", "-extpass", "echo test")
 		test_helpers.MountOrExit(dirB, dirC, "-extpass", "echo test")
 		r = m.Run()
 		test_helpers.UnmountPanic(dirC)
@@ -73,3 +64,20 @@ func TestMain(m *testing.M) {
 	}
 	os.Exit(r)
 }
+
+// newReverseFS creates and mounts a new, empty reverse filesystem.
+func newReverseFS(extraMountArgs []string) (backingDir, mntDir, ctlsockPath string) {
+	args := []string{"-reverse"}
+	if plaintextnames {
+		args = append(args, "-plaintextnames")
+	} else if deterministic_names {
+		args = append(args, "-deterministic-names")
+	}
+	backingDir = test_helpers.InitFS(nil, args...)
+	mntDir = backingDir + ".mnt"
+	ctlsockPath = mntDir + ".sock"
+	mountArgs := []string{"-reverse", "-extpass", "echo test", "-ctlsock", ctlsockPath}
+	mountArgs = append(mountArgs, extraMountArgs...)
+	test_helpers.MountOrExit(backingDir, mntDir, mountArgs...)
+	return
+}
-- 
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