Commit 063cc9f0 authored Mar 08, 2019 by Andrey Ignatov Committed by Alexei Starovoitov Apr 12, 2019

libbpf: Support sysctl hook



Support BPF_PROG_TYPE_CGROUP_SYSCTL program in libbpf: identifying
program and attach types by section name, probe.

Signed-off-by: Andrey Ignatov <rdna@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

parent 196398d4

tools/lib/bpf/libbpf.c

+3 −0

Original line number	Diff line number	Diff line
		@@ -2064,6 +2064,7 @@ static bool bpf_prog_type__needs_kver(enum bpf_prog_type type)
		case BPF_PROG_TYPE_TRACEPOINT:
		case BPF_PROG_TYPE_RAW_TRACEPOINT:
		case BPF_PROG_TYPE_PERF_EVENT:
		case BPF_PROG_TYPE_CGROUP_SYSCTL:
		return false;
		case BPF_PROG_TYPE_KPROBE:
		default:
		@@ -3004,6 +3005,8 @@ static const struct {
		BPF_CGROUP_UDP4_SENDMSG),
		BPF_EAPROG_SEC("cgroup/sendmsg6", BPF_PROG_TYPE_CGROUP_SOCK_ADDR,
		BPF_CGROUP_UDP6_SENDMSG),
		BPF_EAPROG_SEC("cgroup/sysctl", BPF_PROG_TYPE_CGROUP_SYSCTL,
		BPF_CGROUP_SYSCTL),
		};

		#undef BPF_PROG_SEC_IMPL

tools/lib/bpf/libbpf_probes.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -97,6 +97,7 @@ probe_load(enum bpf_prog_type prog_type, const struct bpf_insn *insns,
		case BPF_PROG_TYPE_LIRC_MODE2:
		case BPF_PROG_TYPE_SK_REUSEPORT:
		case BPF_PROG_TYPE_FLOW_DISSECTOR:
		case BPF_PROG_TYPE_CGROUP_SYSCTL:
		default:
		break;
		}