selftests/bpf: Convert test_bpffs to ASSERT macros

Remove usage of deprecated CHECK macros.
Signed-off-by: Lorenz Bauer <lmb@cloudflare.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Link: https://lore.kernel.org/bpf/20211028094724.59043-4-lmb@cloudflare.com

tools/testing/selftests/bpf/prog_tests/test_bpffs.c

@@ -29,43 +29,43 @@ static int read_iter(char *file)
 
 static int fn(void)
 {
-	int err, duration = 0;
+	int err;
 
 	err = unshare(CLONE_NEWNS);
-	if (CHECK(err, "unshare", "failed: %d\n", errno))
+	if (!ASSERT_OK(err, "unshare"))
 		goto out;
 
 	err = mount("", "/", "", MS_REC | MS_PRIVATE, NULL);
-	if (CHECK(err, "mount /", "failed: %d\n", errno))
+	if (!ASSERT_OK(err, "mount /"))
 		goto out;
 
 	err = umount(TDIR);
-	if (CHECK(err, "umount " TDIR, "failed: %d\n", errno))
+	if (!ASSERT_OK(err, "umount " TDIR))
 		goto out;
 
 	err = mount("none", TDIR, "tmpfs", 0, NULL);
-	if (CHECK(err, "mount", "mount root failed: %d\n", errno))
+	if (!ASSERT_OK(err, "mount tmpfs"))
 		goto out;
 
 	err = mkdir(TDIR "/fs1", 0777);
-	if (CHECK(err, "mkdir "TDIR"/fs1", "failed: %d\n", errno))
+	if (!ASSERT_OK(err, "mkdir " TDIR "/fs1"))
 		goto out;
 	err = mkdir(TDIR "/fs2", 0777);
-	if (CHECK(err, "mkdir "TDIR"/fs2", "failed: %d\n", errno))
+	if (!ASSERT_OK(err, "mkdir " TDIR "/fs2"))
 		goto out;
 
 	err = mount("bpf", TDIR "/fs1", "bpf", 0, NULL);
-	if (CHECK(err, "mount bpffs "TDIR"/fs1", "failed: %d\n", errno))
+	if (!ASSERT_OK(err, "mount bpffs " TDIR "/fs1"))
 		goto out;
 	err = mount("bpf", TDIR "/fs2", "bpf", 0, NULL);
-	if (CHECK(err, "mount bpffs " TDIR "/fs2", "failed: %d\n", errno))
+	if (!ASSERT_OK(err, "mount bpffs " TDIR "/fs2"))
 		goto out;
 
 	err = read_iter(TDIR "/fs1/maps.debug");
-	if (CHECK(err, "reading " TDIR "/fs1/maps.debug", "failed\n"))
+	if (!ASSERT_OK(err, "reading " TDIR "/fs1/maps.debug"))
 		goto out;
 	err = read_iter(TDIR "/fs2/progs.debug");
-	if (CHECK(err, "reading " TDIR "/fs2/progs.debug", "failed\n"))
+	if (!ASSERT_OK(err, "reading " TDIR "/fs2/progs.debug"))
 		goto out;
 out:
 	umount(TDIR "/fs1");