netdev - Re: [PATCH ghak81 RFC V1 4/5] audit: use inline function to set audit context

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Date:   Wed, 9 May 2018 12:07:00 +1000
From:   "Tobin C. Harding" <tobin@...orbit.com>
To:     Richard Guy Briggs <rgb@...hat.com>
Cc:     Linux-Audit Mailing List <linux-audit@...hat.com>,
        LKML <linux-kernel@...r.kernel.org>,
        Linux NetDev Upstream Mailing List <netdev@...r.kernel.org>,
        Netfilter Devel List <netfilter-devel@...r.kernel.org>,
        Linux Security Module list 
        <linux-security-module@...r.kernel.org>,
        Integrity Measurement Architecture 
        <linux-integrity@...r.kernel.org>,
        SElinux list <selinux@...ho.nsa.gov>,
        Eric Paris <eparis@...hat.com>,
        Paul Moore <paul@...l-moore.com>,
        Steve Grubb <sgrubb@...hat.com>,
        Ingo Molnar <mingo@...hat.com>,
        David Howells <dhowells@...hat.com>
Subject: Re: [PATCH ghak81 RFC V1 4/5] audit: use inline function to set
 audit context

On Fri, May 04, 2018 at 04:54:37PM -0400, Richard Guy Briggs wrote:
> Recognizing that the audit context is an internal audit value, use an
> access function to set the audit context pointer for the task
> rather than reaching directly into the task struct to set it.
> 
> Signed-off-by: Richard Guy Briggs <rgb@...hat.com>
> ---
>  include/linux/audit.h | 8 ++++++++
>  kernel/auditsc.c      | 6 +++---
>  kernel/fork.c         | 2 +-
>  3 files changed, 12 insertions(+), 4 deletions(-)
> 
> diff --git a/include/linux/audit.h b/include/linux/audit.h
> index 93e4c61..dba0d45 100644
> --- a/include/linux/audit.h
> +++ b/include/linux/audit.h
> @@ -235,6 +235,10 @@ extern void __audit_inode_child(struct inode *parent,
>  extern void __audit_seccomp(unsigned long syscall, long signr, int code);
>  extern void __audit_ptrace(struct task_struct *t);
>  
> +static inline void audit_set_context(struct task_struct *task, struct audit_context *ctx)
> +{
> +	task->audit_context = ctx;
> +}
>  static inline struct audit_context *audit_context(struct task_struct *task)
>  {
>  	return task->audit_context;
> @@ -472,6 +476,10 @@ static inline bool audit_dummy_context(void)
>  {
>  	return true;
>  }
> +static inline void audit_set_context(struct task_struct *task, struct audit_context *ctx)
> +{
> +	task->audit_context = ctx;
> +}

If audit_context is an internal audit value why do we set it when
CONFIG_AUDITSYSCALL is not set?

thanks,
Tobin.