linux-kernel - Re: [PATCH v4 03/11] lsm: add file opener's cred to a setprocattr arguments

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Message-ID: <20151110041625.GA19875@ZenIV.linux.org.uk>
Date:	Tue, 10 Nov 2015 04:16:25 +0000
From:	Al Viro <viro@...IV.linux.org.uk>
To:	Lukasz Pawelczyk <l.pawelczyk@...sung.com>
Cc:	"David S. Miller" <davem@...emloft.net>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	"Serge E. Hallyn" <serge@...lyn.com>,
	Alexey Dobriyan <adobriyan@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Andy Lutomirski <luto@...nel.org>,
	Calvin Owens <calvinowens@...com>,
	Casey Schaufler <casey@...aufler-ca.com>,
	David Howells <dhowells@...hat.com>,
	Eric Dumazet <edumazet@...gle.com>,
	Eric Paris <eparis@...isplace.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	James Morris <james.l.morris@...cle.com>,
	Jann Horn <jann@...jh.net>, Jiri Slaby <jslaby@...e.com>,
	Joe Perches <joe@...ches.com>,
	John Johansen <john.johansen@...onical.com>,
	Jonathan Corbet <corbet@....net>,
	Kees Cook <keescook@...omium.org>,
	Mauro Carvalho Chehab <mchehab@....samsung.com>,
	NeilBrown <neilb@...e.de>, Paul Moore <paul@...l-moore.com>,
	Serge Hallyn <serge.hallyn@...onical.com>,
	Stephen Smalley <sds@...ho.nsa.gov>, Tejun Heo <tj@...nel.org>,
	Tetsuo Handa <penguin-kernel@...ove.SAKURA.ne.jp>,
	containers@...ts.linuxfoundation.org, linux-doc@...r.kernel.org,
	linux-fsdevel@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-security-module@...r.kernel.org, selinux@...ho.nsa.gov,
	Lukasz Pawelczyk <havner@...il.com>
Subject: Re: [PATCH v4 03/11] lsm: add file opener's cred to a setprocattr
 arguments

On Wed, Oct 14, 2015 at 02:41:57PM +0200, Lukasz Pawelczyk wrote:
>  	int (*getprocattr)(struct task_struct *p, char *name, char **value);
> -	int (*setprocattr)(struct task_struct *p, char *name, void *value,
> -				size_t size);
> +	int (*setprocattr)(struct task_struct *p, const struct cred *f_cred,
> +			   char *name, void *value, size_t size);

*grumble*

Why the hell is that thing taking char *name - not even const char *?
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