[v1] bpftool: Refactor config parsing and add CET symbol matching

[PATCH 0/2] bpftool: Refactor config parsing and add CET symbol matching

chenyuan_fl@163.com posted 2 patches 1 month, 2 weeks ago

Diff against v7 v8
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tools/bpf/bpftool/common.c  | 93 +++++++++++++++++++++++++++++++++++++
tools/bpf/bpftool/feature.c | 86 ++--------------------------------
tools/bpf/bpftool/link.c    | 38 ++++++++++++++-
tools/bpf/bpftool/main.h    |  9 ++++
4 files changed, 142 insertions(+), 84 deletions(-)

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[PATCH 0/2] bpftool: Refactor config parsing and add CET symbol matching

Posted by chenyuan_fl@163.com 1 month, 2 weeks ago

From: Yuan CHen <chenyuan@kylinos.cn>

1. **Refactor kernel config parsing**  
   - Moves duplicate config file handling from feature.c to common.c  
   - Keeps all existing functionality while enabling code reuse  

2. **Add CET-aware symbol matching**  
   - Adjusts kprobe hook detection for x86_64 CET (endbr32/64 prefixes)  
   - Matches symbols at both original and CET-adjusted addresses  

Changed in PATCH v4:
* Refactor repeated code into a function.
* Add detection for the x86 architecture.

Changed int PATH v5:
* Remove detection for the x86 architecture.

Changed in PATCH v6:
* Add new helper patch (1/2) to refactor kernel config reading
* Use the new read_kernel_config() in CET symbol matching (2/2) to check CONFIG_X86_KERNEL_IBT

Yuan Chen (2):
  bpftool: Refactor kernel config reading into common helper
  bpftool: Add CET-aware symbol matching for x86_64 architectures

 tools/bpf/bpftool/common.c  | 93 +++++++++++++++++++++++++++++++++++++
 tools/bpf/bpftool/feature.c | 86 ++--------------------------------
 tools/bpf/bpftool/link.c    | 38 ++++++++++++++-
 tools/bpf/bpftool/main.h    |  9 ++++
 4 files changed, 142 insertions(+), 84 deletions(-)

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2.39.5