linux-kernel - Re: [RFC] fs, proc: Introduce the /proc/<pid>/map

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20110826142334.GA26675@shutemov.name>
Date:	Fri, 26 Aug 2011 17:23:34 +0300
From:	"Kirill A. Shutemov" <kirill@...temov.name>
To:	Tejun Heo <tj@...nel.org>
Cc:	Cyrill Gorcunov <gorcunov@...il.com>,
	Andrew Morton <akpm@...ux-foundation.org>,
	Pavel Emelyanov <xemul@...allels.com>,
	linux-kernel@...r.kernel.org,
	James Bottomley <jbottomley@...allels.com>,
	containers@...ts.osdl.org, Andi Kleen <andi@...stfloor.org>,
	Nathan Lynch <ntl@...ox.com>,
	LINUXFS-ML <linux-fsdevel@...r.kernel.org>,
	Zan Lynx <zlynx@....org>, Daniel Lezcano <dlezcano@...ibm.com>,
	Vasiliy Kulikov <segoon@...nwall.com>
Subject: Re: [RFC] fs, proc: Introduce the /proc/<pid>/map_files/ directory v2

On Fri, Aug 26, 2011 at 04:06:20PM +0200, Tejun Heo wrote:
> > +struct map_files_info {
> > +	struct file	*file;
> > +	unsigned char	name[16+16+2]; /* max: %016lx-%016lx\0 */
> > +	unsigned long	len;
> > +};
> 
> That's slightly above 50 bytes.

We can use 4 * sizeof(unsigned long) + 2 for name to save a bit on 32 bit
architectures.

BTW, show_map_vma() uses "%08lx-%08lx" to print ->start, ->end. I think
it's good idea to use this here as well to be consistent with
/proc/$PID/{s,}maps

-- 
 Kirill A. Shutemov
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@...r.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/