linux-kernel - Re: [PATCH v1 2/2] signal: add procfd

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Message-ID: <20181119171404.GB28067@asgard.redhat.com>
Date:   Mon, 19 Nov 2018 18:14:04 +0100
From:   Eugene Syromiatnikov <esyr@...hat.com>
To:     Christian Brauner <christian@...uner.io>
Cc:     ebiederm@...ssion.com, linux-kernel@...r.kernel.org,
        serge@...lyn.com, jannh@...gle.com, luto@...nel.org,
        akpm@...ux-foundation.org, oleg@...hat.com, cyphar@...har.com,
        viro@...iv.linux.org.uk, linux-fsdevel@...r.kernel.org,
        linux-api@...r.kernel.org, dancol@...gle.com, timmurray@...gle.com,
        linux-man@...r.kernel.org, Kees Cook <keescook@...omium.org>
Subject: Re: [PATCH v1 2/2] signal: add procfd_signal() syscall

On Mon, Nov 19, 2018 at 11:32:39AM +0100, Christian Brauner wrote:
> +/**
> + *  sys_procfd_signal - send a signal to a process through a process file
> + *                      descriptor
> + *  @fd: the file descriptor of the process
> + *  @sig: signal to be sent
> + *  @info: the signal info
> + *  @flags: future flags to be passed
> + */
> +SYSCALL_DEFINE4(procfd_signal, int, fd, int, sig, siginfo_t __user *, info,
> +		int, flags)

It could be considered better to use an unsigned type for the "flags"
argument.