Date:   Mon, 23 Jan 2023 16:41:02 +0100
From:   Oleg Nesterov <oleg@redhat.com>
To:     Gregory Price <gourry.memverge@gmail.com>
Cc:     linux-kernel@vger.kernel.org, linux-fsdevel@vger.kernel.org,
        linux-doc@vger.kernel.org, linux-kselftest@vger.kernel.org,
        krisman@collabora.com, tglx@linutronix.de, luto@kernel.org,
        peterz@infradead.org, ebiederm@xmission.com,
        akpm@linux-foundation.org, adobriyan@gmail.com, corbet@lwn.net,
        shuah@kernel.org, Gregory Price <gregory.price@memverge.com>
Subject: Re: [PATCH 3/3] ptrace,syscall_user_dispatch: add a getter/setter
 for sud configuration
Message-ID: <20230123154101.GA6268@redhat.com>
References: <20230123032942.18263-1-gregory.price@memverge.com>
 <20230123032942.18263-4-gregory.price@memverge.com>
MIME-Version: 1.0
Content-Type: text/plain; charset=us-ascii
Content-Disposition: inline
In-Reply-To: <20230123032942.18263-4-gregory.price@memverge.com>
User-Agent: Mutt/1.5.24 (2015-08-30)
Precedence: bulk

On 01/22, Gregory Price wrote:
>
> +int syscall_user_dispatch_get_config(struct task_struct *task, unsigned long size,
> +		void __user *data)
> +{
> +	struct syscall_user_dispatch *sd = &task->syscall_dispatch;
> +	struct syscall_user_dispatch_config config;
> +
> +	if (size != sizeof(struct syscall_user_dispatch_config))
> +		return -EINVAL;
> +
> +	if (test_syscall_work(SYSCALL_USER_DISPATCH))
> +		config.mode = PR_SYS_DISPATCH_ON;
> +	else
> +		config.mode = PR_SYS_DISPATCH_OFF;

Stupid question...

Why do we need 2/3 (which reports SYSCALL_USER_DISPATCH in proc/pid/status) then?

Oleg.