Re: [PATCH bpf-next v3 1/2] bpf: Add bpf_lsm_set_bprm_opts helper

[Martin KaFai Lau]

On Tue, Nov 17, 2020 at 02:13:06AM +0000, KP Singh wrote:
> From: KP Singh <kpsingh@xxxxxxxxxx>
> 
> The helper allows modification of certain bits on the linux_binprm
> struct starting with the secureexec bit which can be updated using the
> BPF_LSM_F_BPRM_SECUREEXEC flag.
> 
> secureexec can be set by the LSM for privilege gaining executions to set
> the AT_SECURE auxv for glibc.  When set, the dynamic linker disables the
> use of certain environment variables (like LD_PRELOAD).
> 
> Signed-off-by: KP Singh <kpsingh@xxxxxxxxxx>
Acked-by: Martin KaFai Lau <kafai@xxxxxx>