bpftool: bpf_link_get_from_fd support for LSM programs in lskel

bpf_link_get_from_fd currently returns a NULL fd for LSM programs.
LSM programs are similar to tracing programs and can also use
skel_raw_tracepoint_open.

Signed-off-by: KP Singh <kpsingh@kernel.org>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Link: https://lore.kernel.org/bpf/20220509214905.3754984-1-kpsingh@kernel.org

diff --git a/tools/bpf/bpftool/gen.c b/tools/bpf/bpftool/gen.c
index aa1dc8f..4c9477f 100644 (file)
--- a/tools/bpf/bpftool/gen.c
+++ b/tools/bpf/bpftool/gen.c
@@ -549,6 +549,7 @@ static void codegen_attach_detach(struct bpf_object *obj, const char *obj_name)
                        printf("\tint fd = skel_raw_tracepoint_open(\"%s\", prog_fd);\n", tp_name);
                        break;
                case BPF_PROG_TYPE_TRACING:
+               case BPF_PROG_TYPE_LSM:
                        if (bpf_program__expected_attach_type(prog) == BPF_TRACE_ITER)
                                printf("\tint fd = skel_link_create(prog_fd, 0, BPF_TRACE_ITER);\n");
                        else