[PATCH bpf-next 0/2] expand bpf_d_path helper allowlist

From: Hengqi Chen <hengqi.chen@gmail.com>
To: bpf@vger.kernel.org
Cc: ast@kernel.org, daniel@iogearbox.net, andrii@kernel.org,
	yhs@fb.com, john.fastabend@gmail.com, jolsa@kernel.org,
	yanivagman@gmail.com, hengqi.chen@gmail.com
Subject: [PATCH bpf-next 0/2] expand bpf_d_path helper allowlist
Date: Sun, 25 Jul 2021 22:18:12 +0800	[thread overview]
Message-ID: <20210725141814.2000828-1-hengqi.chen@gmail.com> (raw)

This patch series adds more functions to bpf_d_path allowlist.

Patch 1 resolves an issue of missing symbols of .BTF_ids.
Patch 2 expands bpf_d_path allowlist.

Changes since v2: [2]
 - Andrii suggested that we should first address an issue of .BTF_ids
   before adding more symbols to .BTF_ids. Fixed that.
 - Yaniv proposed adding security_sb_mount and security_bprm_check.
   Added them.

Changes since v1: [1]
 - Alexei and Yonghong suggested that bpf_d_path helper could also
   apply to vfs_* and security_file_* kernel functions. Added them.

[1] https://lore.kernel.org/bpf/20210712162424.2034006-1-hengqi.chen@gmail.com/
[2] https://lore.kernel.org/bpf/20210719151753.399227-1-hengqi.chen@gmail.com/
[3] https://github.com/iovisor/bcc/issues/3527

Hengqi Chen (2):
  tools/resolve_btfids: emit warnings and patch zero id for missing
    symbols
  bpf: expose bpf_d_path helper to vfs_* and security_* functions

 kernel/trace/bpf_trace.c        | 52 +++++++++++++++++++++++++++++++--
 tools/bpf/resolve_btfids/main.c | 13 +++++----
 2 files changed, 57 insertions(+), 8 deletions(-)

--
2.25.1