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Subject[PATCH v2 0/6] bpf-lsm: Extend interoperability with IMA
Date
Extend the interoperability with IMA, to give wider flexibility for the
implementation of integrity-focused LSMs based on eBPF.

Patch 1 fixes some style issues.

Patches 2-4 gives the ability to eBPF-based LSMs to take advantage of the
measurement capability of IMA without needing to setup a policy in IMA
(those LSMs might implement the policy capability themselves).

Patches 5-6 allows eBPF-based LSMs to evaluate files read by the kernel.

Changelog

v1:
- Modify ima_file_hash() only and allow the usage of the function with the
modified behavior by eBPF-based LSMs through the new function
bpf_ima_file_hash() (suggested by Mimi)
- Make bpf_lsm_kernel_read_file() sleepable so that bpf_ima_inode_hash()
and bpf_ima_file_hash() can be called inside the implementation of
eBPF-based LSMs for this hook

Roberto Sassu (6):
ima: Fix documentation-related warnings in ima_main.c
ima: Always return a file measurement in ima_file_hash()
bpf-lsm: Introduce new helper bpf_ima_file_hash()
selftests/bpf: Add test for bpf_ima_file_hash()
bpf-lsm: Make bpf_lsm_kernel_read_file() as sleepable
selftests/bpf: Add test for bpf_lsm_kernel_read_file()

include/uapi/linux/bpf.h | 11 +++++
kernel/bpf/bpf_lsm.c | 21 +++++++++
security/integrity/ima/ima_main.c | 47 ++++++++++++-------
tools/include/uapi/linux/bpf.h | 11 +++++
tools/testing/selftests/bpf/ima_setup.sh | 2 +
.../selftests/bpf/prog_tests/test_ima.c | 30 ++++++++++--
tools/testing/selftests/bpf/progs/ima.c | 34 ++++++++++++--
7 files changed, 132 insertions(+), 24 deletions(-)

--
2.32.0

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