[bpf-next,v2,0/3] handle errno ENOTSUPP

Message

Geliang Tang July 12, 2024, 2:24 p.m. UTC

From: Geliang Tang <[e-mail]>

v2:
 - patch 1, only commit log updated
 - update patch 2
   - add an unsigned variable
   - use "switch-case"
   - only "Operation not supported", no (-524) in string
 - patch 3, a now one

This patchset contains three fixes for handling errno ENOTSUPP.

Patch 1 fixes the return value of fixup_call_args() to make sure
ENOTSUPP is returned to user space correctly.
Patch 2 handles ENOTSUPP in libbpf_strerror_r() in libbpf.
Patch 3 includes str_error.h in BPF selftests, and drop duplicate
ENOTSUPP definitions.

Geliang Tang (3):
  bpf: verifier: Fix return value of fixup_call_args
  libbpf: handle ENOTSUPP in libbpf_strerror_r
  selftests/bpf: Drop duplicate ENOTSUPP definitions

 kernel/bpf/verifier.c                          |  6 +++---
 tools/lib/bpf/str_error.c                      | 18 +++++++++++++-----
 tools/lib/bpf/str_error.h                      |  4 ++++
 .../selftests/bpf/prog_tests/bpf_tcp_ca.c      |  4 ----
 .../selftests/bpf/prog_tests/lsm_cgroup.c      |  4 ----
 .../selftests/bpf/prog_tests/sock_addr.c       |  4 ----
 tools/testing/selftests/bpf/test_maps.c        |  4 ----
 tools/testing/selftests/bpf/test_verifier.c    |  4 ----
 tools/testing/selftests/bpf/testing_helpers.h  |  1 +
 9 files changed, 21 insertions(+), 28 deletions(-)