[RFC bpf-next] lsm: bpf: Remove lsm_prop_bpf

[Matt Bobrowski]

On Fri, Oct 24, 2025 at 05:10:22PM -0700, Song Liu wrote:
> lsm_prop_bpf is not used in any code. Remove it.
> 
> Signed-off-by: Song Liu <song at kernel.org>

Reviewed-by: Matt Bobrowski <mattbobrowski at google.com>

> ---
> 
> Or did I miss any user of it?

No, it doesn't look like you have, and I don't see how struct lsm_prop
could be used from the context of the BPF LSM ATM anyway. Thanks for
cleaning this up.

> ---
>  include/linux/lsm/bpf.h  | 16 ----------------
>  include/linux/security.h |  2 --
>  2 files changed, 18 deletions(-)
>  delete mode 100644 include/linux/lsm/bpf.h
> 
> diff --git a/include/linux/lsm/bpf.h b/include/linux/lsm/bpf.h
> deleted file mode 100644
> index 8106e206fcef..000000000000
> --- a/include/linux/lsm/bpf.h
> +++ /dev/null
> @@ -1,16 +0,0 @@
> -/* SPDX-License-Identifier: GPL-2.0 */
> -/*
> - * Linux Security Module interface to other subsystems.
> - * BPF may present a single u32 value.
> - */
> -#ifndef __LINUX_LSM_BPF_H
> -#define __LINUX_LSM_BPF_H
> -#include <linux/types.h>
> -
> -struct lsm_prop_bpf {
> -#ifdef CONFIG_BPF_LSM
> -	u32 secid;
> -#endif
> -};
> -
> -#endif /* ! __LINUX_LSM_BPF_H */
> diff --git a/include/linux/security.h b/include/linux/security.h
> index 92ac3f27b973..b6ace332576f 100644
> --- a/include/linux/security.h
> +++ b/include/linux/security.h
> @@ -37,7 +37,6 @@
>  #include <linux/lsm/selinux.h>
>  #include <linux/lsm/smack.h>
>  #include <linux/lsm/apparmor.h>
> -#include <linux/lsm/bpf.h>
>  
>  struct linux_binprm;
>  struct cred;
> @@ -163,7 +162,6 @@ struct lsm_prop {
>  	struct lsm_prop_selinux selinux;
>  	struct lsm_prop_smack smack;
>  	struct lsm_prop_apparmor apparmor;
> -	struct lsm_prop_bpf bpf;
>  };
>  
>  extern const char *const lockdown_reasons[LOCKDOWN_CONFIDENTIALITY_MAX+1];
> -- 
> 2.47.3
>