From 6fa772a88eb10bdd521ab25ff8a7045e703becb7 Mon Sep 17 00:00:00 2001
From: Alan Somers <asomers@FreeBSD.org>
Date: Mon, 17 Jun 2019 17:17:01 +0000
Subject: fusefs: skip the Write.mmap test when mmap is not available

fusefs doesn't not allow mmap when data caching is disabled.

Sponsored by:	The FreeBSD Foundation
---
 tests/sys/fs/fusefs/write.cc | 20 ++++++++++++++++++--
 1 file changed, 18 insertions(+), 2 deletions(-)

diff --git a/tests/sys/fs/fusefs/write.cc b/tests/sys/fs/fusefs/write.cc
index 983c93d38eb0b..a35cf0d9ae8a8 100644
--- a/tests/sys/fs/fusefs/write.cc
+++ b/tests/sys/fs/fusefs/write.cc
@@ -92,6 +92,23 @@ void expect_write(uint64_t ino, uint64_t offset, uint64_t isize,
 
 };
 
+class WriteCacheable: public Write {
+public:
+virtual void SetUp() {
+	const char *node = "vfs.fusefs.data_cache_mode";
+	int val = 0;
+	size_t size = sizeof(val);
+
+	FuseTest::SetUp();
+
+	ASSERT_EQ(0, sysctlbyname(node, &val, &size, NULL, 0))
+		<< strerror(errno);
+	if (val == 0)
+		GTEST_SKIP() <<
+			"fusefs data caching must be enabled for this test";
+}
+};
+
 sig_atomic_t Write::s_sigxfsz = 0;
 
 class Write_7_8: public FuseTest {
@@ -483,8 +500,7 @@ TEST_F(Write, rlimit_fsize)
  * write, then it must set the FUSE_WRITE_CACHE bit
  */
 /* https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=236378 */
-// TODO: check vfs.fusefs.mmap_enable
-TEST_F(Write, mmap)
+TEST_F(WriteCacheable, mmap)
 {
 	const char FULLPATH[] = "mountpoint/some_file.txt";
 	const char RELPATH[] = "some_file.txt";
-- 
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