linux-kernel - Re: [PATCHv10 man-pages 5/5] execveat.2: initial man page for execveat(2)

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Message-ID: <20150109233644.GR22149@ZenIV.linux.org.uk>
Date:	Fri, 9 Jan 2015 23:36:44 +0000
From:	Al Viro <viro@...IV.linux.org.uk>
To:	Rich Felker <dalias@...ifal.cx>
Cc:	David Drysdale <drysdale@...gle.com>,
	"Michael Kerrisk (man-pages)" <mtk.manpages@...il.com>,
	"Eric W. Biederman" <ebiederm@...ssion.com>,
	Andy Lutomirski <luto@...capital.net>,
	Meredydd Luff <meredydd@...atehouse.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Andrew Morton <akpm@...ux-foundation.org>,
	David Miller <davem@...emloft.net>,
	Thomas Gleixner <tglx@...utronix.de>,
	Stephen Rothwell <sfr@...b.auug.org.au>,
	Oleg Nesterov <oleg@...hat.com>,
	Ingo Molnar <mingo@...hat.com>,
	"H. Peter Anvin" <hpa@...or.com>,
	Kees Cook <keescook@...omium.org>,
	Arnd Bergmann <arnd@...db.de>,
	Christoph Hellwig <hch@...radead.org>, X86 ML <x86@...nel.org>,
	linux-arch <linux-arch@...r.kernel.org>,
	Linux API <linux-api@...r.kernel.org>,
	sparclinux@...r.kernel.org
Subject: Re: [PATCHv10 man-pages 5/5] execveat.2: initial man page for
 execveat(2)

On Fri, Jan 09, 2015 at 06:12:48PM -0500, Rich Felker wrote:

> I'm not sure where you're disagreeing with me. open of procfs symlinks
> does not resolve the symlink and open the resulting pathname. They are
> "magic symlinks" which are bound to the inode of the open file. I
> don't see why this action, which is already special for magic
> symlinks, can't check a flag on the magic symlink and possibly close
> the corresponding file descriptor as part of its action.

_What_ action?  ->follow_link()?  As in "the same thing that e.g.
stat(2) would trigger"?
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