[PATCH v2 bpf-next 0/3] Remove libcap dependency from bpf selftests

From: Martin KaFai Lau <kafai@fb.com>
To: <bpf@vger.kernel.org>
Cc: Alexei Starovoitov <ast@kernel.org>,
	Andrii Nakryiko <andrii@kernel.org>,
	Daniel Borkmann <daniel@iogearbox.net>,
	John Fastabend <john.fastabend@gmail.com>, <kernel-team@fb.com>,
	Stanislav Fomichev <sdf@google.com>
Subject: [PATCH v2 bpf-next 0/3] Remove libcap dependency from bpf selftests
Date: Wed, 16 Mar 2022 10:38:16 -0700	[thread overview]
Message-ID: <20220316173816.2035581-1-kafai@fb.com> (raw)

After upgrading to the newer libcap (>= 2.60),
the libcap commit aca076443591 ("Make cap_t operations thread safe.")
added a "__u8 mutex;" to the "struct _cap_struct".  It caused a few byte
shift that breaks the assumption made in the "struct libcap" definition
in test_verifier.c.

This set is to remove the libcap dependency from the bpf selftests.

v2:
- Define CAP_PERFMON and CAP_BPF when the older <linux/capability.h>
  does not have them. (Andrii)

Martin KaFai Lau (3):
  bpf: selftests: Add helpers to directly use the capget and capset
    syscall
  bpf: selftests: Remove libcap usage from test_verifier
  bpf: selftests: Remove libcap usage from test_progs

 tools/testing/selftests/bpf/Makefile          |  8 +-
 tools/testing/selftests/bpf/cap_helpers.c     | 67 ++++++++++++++
 tools/testing/selftests/bpf/cap_helpers.h     | 19 ++++
 .../selftests/bpf/prog_tests/bind_perm.c      | 44 ++--------
 tools/testing/selftests/bpf/test_verifier.c   | 88 ++++++-------------
 5 files changed, 124 insertions(+), 102 deletions(-)
 create mode 100644 tools/testing/selftests/bpf/cap_helpers.c
 create mode 100644 tools/testing/selftests/bpf/cap_helpers.h

-- 
2.30.2