[PATCH v3 27/68] selftests/landlock: Drop define _GNU_SOURCE

[Edward Liaw]

_GNU_SOURCE is provided by lib.mk, so it should be dropped to prevent
redefinition warnings.

Fixes: 809216233555 ("selftests/harness: remove use of LINE_MAX")
Reviewed-by: John Hubbard <jhubbard at nvidia.com>
Reviewed-by: Muhammad Usama Anjum <usama.anjum at collabora.com>
Signed-off-by: Edward Liaw <edliaw at google.com>
---
 tools/testing/selftests/landlock/base_test.c   | 2 --
 tools/testing/selftests/landlock/fs_test.c     | 2 --
 tools/testing/selftests/landlock/net_test.c    | 2 --
 tools/testing/selftests/landlock/ptrace_test.c | 2 --
 4 files changed, 8 deletions(-)

diff --git a/tools/testing/selftests/landlock/base_test.c b/tools/testing/selftests/landlock/base_test.c
index 3c1e9f35b531..c86e6f87b398 100644
--- a/tools/testing/selftests/landlock/base_test.c
+++ b/tools/testing/selftests/landlock/base_test.c
@@ -5,8 +5,6 @@
  * Copyright © 2017-2020 Mickaël Salaün <mic at digikod.net>
  * Copyright © 2019-2020 ANSSI
  */
-
-#define _GNU_SOURCE
 #include <errno.h>
 #include <fcntl.h>
 #include <linux/landlock.h>
diff --git a/tools/testing/selftests/landlock/fs_test.c b/tools/testing/selftests/landlock/fs_test.c
index 6b5a9ff88c3d..eec0d9a44d50 100644
--- a/tools/testing/selftests/landlock/fs_test.c
+++ b/tools/testing/selftests/landlock/fs_test.c
@@ -6,8 +6,6 @@
  * Copyright © 2020 ANSSI
  * Copyright © 2020-2022 Microsoft Corporation
  */
-
-#define _GNU_SOURCE
 #include <asm/termbits.h>
 #include <fcntl.h>
 #include <libgen.h>
diff --git a/tools/testing/selftests/landlock/net_test.c b/tools/testing/selftests/landlock/net_test.c
index f21cfbbc3638..eed040adcbac 100644
--- a/tools/testing/selftests/landlock/net_test.c
+++ b/tools/testing/selftests/landlock/net_test.c
@@ -5,8 +5,6 @@
  * Copyright © 2022-2023 Huawei Tech. Co., Ltd.
  * Copyright © 2023 Microsoft Corporation
  */
-
-#define _GNU_SOURCE
 #include <arpa/inet.h>
 #include <errno.h>
 #include <fcntl.h>
diff --git a/tools/testing/selftests/landlock/ptrace_test.c b/tools/testing/selftests/landlock/ptrace_test.c
index a19db4d0b3bd..c831e6d03b02 100644
--- a/tools/testing/selftests/landlock/ptrace_test.c
+++ b/tools/testing/selftests/landlock/ptrace_test.c
@@ -5,8 +5,6 @@
  * Copyright © 2017-2020 Mickaël Salaün <mic at digikod.net>
  * Copyright © 2019-2020 ANSSI
  */
-
-#define _GNU_SOURCE
 #include <errno.h>
 #include <fcntl.h>
 #include <linux/landlock.h>
-- 
2.45.0.118.g7fe29c98d7-goog