diff options
| author | Christian Brauner <brauner@kernel.org> | 2025-04-07 11:54:20 +0200 |
|---|---|---|
| committer | Christian Brauner <brauner@kernel.org> | 2025-04-07 16:20:14 +0200 |
| commit | c784159750bc83aa91d49ceeb2dbd627d22c0587 (patch) | |
| tree | eb090bb5042878a5dc890b832c2a81fc2598b6d5 | |
| parent | 1ed95281c0c77dbb1540f9855cd3c5f19900f7a5 (diff) | |
selftests/filesystems: add chown() test for anonymous inodes
Test that anonymous inodes cannot be chown()ed.
Link: https://lore.kernel.org/20250407-work-anon_inode-v1-6-53a44c20d44e@kernel.org
Reviewed-by: Jeff Layton <jlayton@kernel.org>
Signed-off-by: Christian Brauner <brauner@kernel.org>
| -rw-r--r-- | tools/testing/selftests/filesystems/.gitignore | 1 | ||||
| -rw-r--r-- | tools/testing/selftests/filesystems/Makefile | 2 | ||||
| -rw-r--r-- | tools/testing/selftests/filesystems/anon_inode_test.c | 26 |
3 files changed, 28 insertions, 1 deletions
diff --git a/tools/testing/selftests/filesystems/.gitignore b/tools/testing/selftests/filesystems/.gitignore index 828b66a10c63..7afa58e2bb20 100644 --- a/tools/testing/selftests/filesystems/.gitignore +++ b/tools/testing/selftests/filesystems/.gitignore @@ -2,3 +2,4 @@ dnotify_test devpts_pts file_stressor +anon_inode_test diff --git a/tools/testing/selftests/filesystems/Makefile b/tools/testing/selftests/filesystems/Makefile index 66305fc34c60..b02326193fee 100644 --- a/tools/testing/selftests/filesystems/Makefile +++ b/tools/testing/selftests/filesystems/Makefile @@ -1,7 +1,7 @@ # SPDX-License-Identifier: GPL-2.0 CFLAGS += $(KHDR_INCLUDES) -TEST_GEN_PROGS := devpts_pts file_stressor +TEST_GEN_PROGS := devpts_pts file_stressor anon_inode_test TEST_GEN_PROGS_EXTENDED := dnotify_test include ../lib.mk diff --git a/tools/testing/selftests/filesystems/anon_inode_test.c b/tools/testing/selftests/filesystems/anon_inode_test.c new file mode 100644 index 000000000000..f2cae8f1ccae --- /dev/null +++ b/tools/testing/selftests/filesystems/anon_inode_test.c @@ -0,0 +1,26 @@ +// SPDX-License-Identifier: GPL-2.0 +#define _GNU_SOURCE +#define __SANE_USERSPACE_TYPES__ + +#include <fcntl.h> +#include <stdio.h> +#include <sys/stat.h> + +#include "../kselftest_harness.h" +#include "overlayfs/wrappers.h" + +TEST(anon_inode_no_chown) +{ + int fd_context; + + fd_context = sys_fsopen("tmpfs", 0); + ASSERT_GE(fd_context, 0); + + ASSERT_LT(fchown(fd_context, 1234, 5678), 0); + ASSERT_EQ(errno, EOPNOTSUPP); + + EXPECT_EQ(close(fd_context), 0); +} + +TEST_HARNESS_MAIN + |