bpf: Allow kfuncs to be used in LSM programs

In preparation for the addition of new kfuncs, allow kfuncs defined in the
tracing subsystem to be used in LSM programs by mapping the LSM program
type to the TRACING hook.

Signed-off-by: KP Singh <kpsingh@kernel.org>
Signed-off-by: Roberto Sassu <roberto.sassu@huawei.com>
Acked-by: Kumar Kartikeya Dwivedi <memxor@gmail.com>
Link: https://lore.kernel.org/r/20220920075951.929132-2-roberto.sassu@huaweicloud.com
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c
index 6ccd4f4d731e7a7273143a66a9edfc4b97691910..dbcf020c4124d8f6917d9cd2ed2b2b0861dc6435 100644 (file)
--- a/kernel/bpf/btf.c
+++ b/kernel/bpf/btf.c
@@ -7376,6 +7376,7 @@ static int bpf_prog_type_to_kfunc_hook(enum bpf_prog_type prog_type)
        case BPF_PROG_TYPE_STRUCT_OPS:
                return BTF_KFUNC_HOOK_STRUCT_OPS;
        case BPF_PROG_TYPE_TRACING:
+       case BPF_PROG_TYPE_LSM:
                return BTF_KFUNC_HOOK_TRACING;
        case BPF_PROG_TYPE_SYSCALL:
                return BTF_KFUNC_HOOK_SYSCALL;