Original BPF token patch set ([0]) added delegate_xxx mount options which supported only special "any" value and hexadecimal bitmask. This patch set attempts to make specifying and inspecting these mount options more human-friendly by supporting string constants matching corresponding bpf_cmd, bpf_map_type, bpf_prog_type, and bpf_attach_type enumerators. This implementation relies on BTF information to find all supported symbolic names. If kernel wasn't built with BTF, BPF FS will still support "any" and hex-based mask. [0] https://patchwork.kernel.org/project/netdevbpf/list/?series=805707&state=* v1->v2: - strip BPF_, BPF_MAP_TYPE_, and BPF_PROG_TYPE_ prefixes, do case-insensitive comparison, normalize to lower case (Alexei). Andrii Nakryiko (2): bpf: support symbolic BPF FS delegation mount options selftests/bpf: utilize string values for delegate_xxx mount options kernel/bpf/inode.c | 249 +++++++++++++++--- .../testing/selftests/bpf/prog_tests/token.c | 52 ++-- 2 files changed, 243 insertions(+), 58 deletions(-) -- 2.34.1
