[LTP] [PATCH] syscalls/copy_file_range02.c: Compatible with new and old kernels

[Jinhui huang]

On new kernels, copy_file_range() returned EISDIR when copyed contents
to directory, but on old kernels, it returned EBADF, we should accept
EBADF to be compatible with new and old kernels.

The patch as follows:
commit 11cbfb10775a ("vfs: deny copy_file_range() for non regular files")

Signed-off-by: Jinhui huang <huangjh.jy@cn.fujitsu.com>
---
 .../syscalls/copy_file_range/copy_file_range02.c   | 33 +++++++++++++++-------
 1 file changed, 23 insertions(+), 10 deletions(-)

diff --git a/testcases/kernel/syscalls/copy_file_range/copy_file_range02.c b/testcases/kernel/syscalls/copy_file_range/copy_file_range02.c
index 07c0207..9e6356c 100644
--- a/testcases/kernel/syscalls/copy_file_range/copy_file_range02.c
+++ b/testcases/kernel/syscalls/copy_file_range/copy_file_range02.c
@@ -54,19 +54,32 @@ static void verify_copy_file_range(unsigned int n)
 	TEST(sys_copy_file_range(fd_src, 0, *tc->copy_to_fd,
 				0, CONTSIZE, tc->flags));
 
-	if (TST_RET == -1) {
-		if (tc->exp_err == TST_ERR) {
+	if (TST_RET != -1) {
+		tst_res(TFAIL,
+			"copy_file_range returned wrong value: %ld", TST_RET);
+		return;
+	}
+
+	if (tc->exp_err == TST_ERR) {
+		tst_res(TPASS | TTERRNO,
+			"copy_file_range failed as expected");
+	} else {
+		/* copy_file_range() returned EISDIR when copyed contents to
+		 * directory on new kernels, but on old kernels, it returned
+		 * EBADF.
+		 *
+		 * the patch as follws:
+		 * commit 11cbfb10775a ("vfs: deny copy_file_range() for non regular files")
+		 */
+		if (tc->exp_err == EISDIR && TST_ERR == EBADF) {
 			tst_res(TPASS | TTERRNO,
-					"copy_file_range failed as expected");
-		} else {
-			tst_res(TFAIL | TTERRNO,
-				"copy_file_range failed unexpectedly; expected %s, but got",
-				tst_strerrno(tc->exp_err));
+				"copy_file_range failed as expected");
 			return;
 		}
-	} else {
-		tst_res(TFAIL,
-			"copy_file_range returned wrong value: %ld", TST_RET);
+
+		tst_res(TFAIL | TTERRNO,
+			"copy_file_range failed unexpectedly; expected %s, but got",
+			tst_strerrno(tc->exp_err));
 	}
 }
 
-- 
1.8.3.1