linux-kernel - [PATCH v2 bpf-next 0/2] security.bpf xattr name prefix

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Message-ID: <20241016070955.375923-1-song@kernel.org>
Date: Wed, 16 Oct 2024 00:09:53 -0700
From: Song Liu <song@...nel.org>
To: bpf@...r.kernel.org,
	linux-fsdevel@...r.kernel.org,
	linux-kernel@...r.kernel.org
Cc: kernel-team@...a.com,
	andrii@...nel.org,
	eddyz87@...il.com,
	ast@...nel.org,
	daniel@...earbox.net,
	martin.lau@...ux.dev,
	viro@...iv.linux.org.uk,
	brauner@...nel.org,
	jack@...e.cz,
	kpsingh@...nel.org,
	mattbobrowski@...gle.com,
	Song Liu <song@...nel.org>
Subject: [PATCH v2 bpf-next 0/2] security.bpf xattr name prefix

Follow up discussion in LPC 2024 [1], that we need security.bpf xattr
prefix. This set adds "security.bpf" xattr name prefix, and allows
bpf kfuncs bpf_get_[file|dentry]_xattr() to read these xattrs.

[1] https://lpc.events/event/18/contributions/1940/

Changes v1 => v2
1. Update comment of bpf_get_[file|dentry]_xattr. (Jiri Olsa)
2. Fix comment for return value of bpf_get_[file|dentry]_xattr.

v1: https://lore.kernel.org/bpf/20241002214637.3625277-1-song@kernel.org/

Song Liu (2):
  fs/xattr: bpf: Introduce security.bpf xattr name prefix
  selftests/bpf: Extend test fs_kfuncs to cover security.bpf xattr names

 fs/bpf_fs_kfuncs.c                            | 22 +++++++++-
 include/uapi/linux/xattr.h                    |  4 ++
 .../selftests/bpf/prog_tests/fs_kfuncs.c      | 40 ++++++++++++++-----
 .../selftests/bpf/progs/test_get_xattr.c      | 30 ++++++++++++--
 4 files changed, 80 insertions(+), 16 deletions(-)

--
2.43.5