linux-kernel - Re: [take 3] Use pid in inotify events.

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Message-ID: <cfec22b10811232108u3ade8b66w58999054c03549fc@mail.gmail.com>
Date:	Sun, 23 Nov 2008 21:08:05 -0800
From:	"John McCutchan" <john@...nmccutchan.com>
To:	"Evgeniy Polyakov" <zbr@...emap.net>
Cc:	"Arnd Bergmann" <arnd@...db.de>, mtk.manpages@...il.com,
	"Christoph Hellwig" <hch@....de>, "Robert Love" <rlove@...ve.org>,
	linux-api@...r.kernel.org, linux-kernel@...r.kernel.org,
	"Andrew Morton" <akpm@...ux-foundation.org>
Subject: Re: [take 3] Use pid in inotify events.

At this point I don't really want to see changes made to inotify. But,
for arguments sake, why not something like inotify_init1 that takes a
flag EXTENDED_EVENT which causes a larger event structure to be used.
Something like,

struct inotify_event_extended
{
  s32 wd;
  u32 mask;
  u32 cookie;
  u32 data[4];
  char path[0];
}

The data array could be used to store arbitrary extra information,
specified by flags.

On Sat, Nov 22, 2008 at 1:37 AM, Evgeniy Polyakov <zbr@...emap.net> wrote:
> On Fri, Nov 21, 2008 at 07:39:45PM +0100, Arnd Bergmann (arnd@...db.de) wrote:
>> The how about an inotify_init1 flag telling the kernel to ignore
>> changes done by the current PID? That sounds like it is potentially
>> useful to other applications that want to monitor the whole file system
>> and also write to it. It also doesn't need to change the ABI in
>> incompatible ways or introduce a security relevant side channel.
>
> That's a good idea. Robert, John, Michael - comments?
>
> --
>        Evgeniy Polyakov
>



-- 
John McCutchan <john@...nmccutchan.com>
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