2022-09-05 15:11:16

by Roberto Sassu

Subject: [PATCH v16 01/12] bpf: Allow kfuncs to be used in LSM programs

From: KP Singh <[email protected]>

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 <[email protected]>
Signed-off-by: Roberto Sassu <[email protected]>
---
kernel/bpf/btf.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c
index 903719b89238..e49b3b6d48ad 100644
--- a/kernel/bpf/btf.c
+++ b/kernel/bpf/btf.c
@@ -7243,6 +7243,7 @@ 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;
--
2.25.1

2022-09-06 02:48:06

by Kumar Kartikeya Dwivedi

Subject: Re: [PATCH v16 01/12] bpf: Allow kfuncs to be used in LSM programs

On Mon, 5 Sept 2022 at 16:34, Roberto Sassu
<[email protected]> wrote:
>
> From: KP Singh <[email protected]>
>
> 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 <[email protected]>
> Signed-off-by: Roberto Sassu <[email protected]>
> ---

Acked-by: Kumar Kartikeya Dwivedi <[email protected]>

> kernel/bpf/btf.c | 1 +
> 1 file changed, 1 insertion(+)
>
> diff --git a/kernel/bpf/btf.c b/kernel/bpf/btf.c
> index 903719b89238..e49b3b6d48ad 100644
> --- a/kernel/bpf/btf.c
> +++ b/kernel/bpf/btf.c
> @@ -7243,6 +7243,7 @@ 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;
> --
> 2.25.1
>