From: Eric Biggers <ebiggers@kernel.org>
To: Song Liu <song@kernel.org>
Cc: bpf@vger.kernel.org, fsverity@lists.linux.dev, ast@kernel.org,
daniel@iogearbox.net, andrii@kernel.org, martin.lau@kernel.org,
kernel-team@meta.com, tytso@mit.edu,
roberto.sassu@huaweicloud.com
Subject: Re: [PATCH v6 bpf-next 5/9] bpf, fsverity: Add kfunc bpf_get_fsverity_digest
Date: Wed, 1 Nov 2023 20:11:04 -0700 [thread overview]
Message-ID: <20231102031104.GB1498@sol.localdomain> (raw)
In-Reply-To: <20231024235551.2769174-6-song@kernel.org>
On Tue, Oct 24, 2023 at 04:55:47PM -0700, Song Liu wrote:
> fsverity provides fast and reliable hash of files, namely fsverity_digest.
> The digest can be used by security solutions to verify file contents.
>
> Add new kfunc bpf_get_fsverity_digest() so that we can access fsverity from
> BPF LSM programs. This kfunc is added to fs/verity/measure.c because some
> data structure used in the function is private to fsverity
> (fs/verity/fsverity_private.h).
>
> To avoid recursion, bpf_get_fsverity_digest is only allowed in BPF LSM
> programs.
>
> Signed-off-by: Song Liu <song@kernel.org>
Acked-by: Eric Biggers <ebiggers@google.com>
- Eric
next prev parent reply other threads:[~2023-11-02 3:11 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-10-24 23:55 [PATCH v6 bpf-next 0/9] bpf: File verification with LSM and fsverity Song Liu
2023-10-24 23:55 ` [PATCH v6 bpf-next 1/9] bpf: Expose bpf_dynptr_slice* kfuncs for in kernel use Song Liu
2023-11-02 16:56 ` Andrii Nakryiko
2023-11-02 17:09 ` Andrii Nakryiko
2023-11-02 17:16 ` Andrii Nakryiko
2023-11-02 18:09 ` Song Liu
2023-11-02 18:12 ` Andrii Nakryiko
2023-11-02 18:16 ` Song Liu
2023-11-02 19:06 ` Andrii Nakryiko
2023-10-24 23:55 ` [PATCH v6 bpf-next 2/9] bpf: Factor out helper check_reg_const_str() Song Liu
2023-11-02 16:58 ` Andrii Nakryiko
2023-10-24 23:55 ` [PATCH v6 bpf-next 3/9] bpf: Introduce KF_ARG_PTR_TO_CONST_STR Song Liu
2023-11-02 5:58 ` Alexei Starovoitov
2023-11-02 6:09 ` Song Liu
2023-10-24 23:55 ` [PATCH v6 bpf-next 4/9] bpf: Add kfunc bpf_get_file_xattr Song Liu
2023-11-02 17:01 ` Andrii Nakryiko
2023-10-24 23:55 ` [PATCH v6 bpf-next 5/9] bpf, fsverity: Add kfunc bpf_get_fsverity_digest Song Liu
2023-11-02 3:11 ` Eric Biggers [this message]
2023-10-24 23:55 ` [PATCH v6 bpf-next 6/9] Documentation/bpf: Add documentation for filesystem kfuncs Song Liu
2023-10-24 23:55 ` [PATCH v6 bpf-next 7/9] selftests/bpf: Sort config in alphabetic order Song Liu
2023-10-24 23:55 ` [PATCH v6 bpf-next 8/9] selftests/bpf: Add tests for filesystem kfuncs Song Liu
2023-10-24 23:55 ` [PATCH v6 bpf-next 9/9] selftests/bpf: Add test that uses fsverity and xattr to sign a file Song Liu
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