selftests/bpf: Add tests for filesystem kfuncs

Browse source

Add selftests for two new filesystem kfuncs:
  1. bpf_get_file_xattr
  2. bpf_get_fsverity_digest

These tests simply make sure the two kfuncs work. Another selftest will be
added to demonstrate how to use these kfuncs to verify file signature.

CONFIG_FS_VERITY is added to selftests config. However, this is not
sufficient to guarantee bpf_get_fsverity_digest works. This is because
fsverity need to be enabled at file system level (for example, with tune2fs
on ext4). If local file system doesn't have this feature enabled, just skip
the test.

Signed-off-by: Song Liu <song@kernel.org>
Link: https://lore.kernel.org/r/20231129234417.856536-6-song@kernel.org
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

...

This commit is contained in:

Song Liu 2023-11-29 15:44:16 -08:00 • committed by Alexei Starovoitov

parent 6b0ae4566a

commit 341f06fddd

5 changed files with 223 additions and 0 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

3

tools/testing/selftests/bpf/bpf_kfuncs.h

View file

1

tools/testing/selftests/bpf/config

View file

134

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

View file

48

tools/testing/selftests/bpf/progs/test_fsverity.c

View file

37

tools/testing/selftests/bpf/progs/test_get_xattr.c

View file