All of lore.kernel.org
 help / color / mirror / Atom feed
From: Evgeniy Polyakov <zbr-i6C2adt8DTjR7s880joybQ@public.gmane.org>
To: mtk.manpages-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org
Cc: linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
	Robert Love <rlove-L7G0xEPcOZbYtjvyW6yDsg@public.gmane.org>,
	linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
Subject: Re: [1/1] Use pid in inotify events.
Date: Sat, 8 Nov 2008 18:35:45 +0300	[thread overview]
Message-ID: <20081108153545.GA3859@ioremap.net> (raw)
In-Reply-To: <cfd18e0f0811080625w5b285cc0p2410e8d187b025c7-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>

Hi Michael.

On Sat, Nov 08, 2008 at 09:25:16AM -0500, Michael Kerrisk (mtk.manpages-gM/Ye1E23mwN+BqQ9rBEUg@public.gmane.org) wrote:
> I've not looked closely at the patch, but a quick question.  The
> ookied field is unused for _most_ events, but is used for rename
> events.  Are you saying that with this patch, that the cookie will be
> used as before for rename events, but for other events it will be the
> PID of the triggering process?  If so, that seems a bit ugly -- why
> wouldn't we also be intersted in the PID for rename events?

Yes, rename events actually consist of at least two: move from and move
to, and they carry the same cookie, so that userspace could combine them
into single transaction. All others use zero, so I decided to put PID of
the caller there. This does not look perfect of course, but we can not
change the structure layout, so rename events can not be changed to
carry additional PID field.

-- 
	Evgeniy Polyakov
--
To unsubscribe from this list: send the line "unsubscribe linux-api" in
the body of a message to majordomo-u79uwXL29TY76Z2rM5mHXA@public.gmane.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

WARNING: multiple messages have this Message-ID (diff)
From: Evgeniy Polyakov <zbr@ioremap.net>
To: mtk.manpages@gmail.com
Cc: linux-kernel@vger.kernel.org, Robert Love <rlove@rlove.org>,
	linux-api@vger.kernel.org
Subject: Re: [1/1] Use pid in inotify events.
Date: Sat, 8 Nov 2008 18:35:45 +0300	[thread overview]
Message-ID: <20081108153545.GA3859@ioremap.net> (raw)
In-Reply-To: <cfd18e0f0811080625w5b285cc0p2410e8d187b025c7@mail.gmail.com>

Hi Michael.

On Sat, Nov 08, 2008 at 09:25:16AM -0500, Michael Kerrisk (mtk.manpages@googlemail.com) wrote:
> I've not looked closely at the patch, but a quick question.  The
> ookied field is unused for _most_ events, but is used for rename
> events.  Are you saying that with this patch, that the cookie will be
> used as before for rename events, but for other events it will be the
> PID of the triggering process?  If so, that seems a bit ugly -- why
> wouldn't we also be intersted in the PID for rename events?

Yes, rename events actually consist of at least two: move from and move
to, and they carry the same cookie, so that userspace could combine them
into single transaction. All others use zero, so I decided to put PID of
the caller there. This does not look perfect of course, but we can not
change the structure layout, so rename events can not be changed to
carry additional PID field.

-- 
	Evgeniy Polyakov

  parent reply	other threads:[~2008-11-08 15:35 UTC|newest]

Thread overview: 21+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2008-11-08 11:42 [1/1] Use pid in inotify events Evgeniy Polyakov
     [not found] ` <20081108114225.GA22674-i6C2adt8DTjR7s880joybQ@public.gmane.org>
2008-11-08 14:25   ` Michael Kerrisk
2008-11-08 14:25     ` Michael Kerrisk
     [not found]     ` <cfd18e0f0811080625w5b285cc0p2410e8d187b025c7-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-11-08 15:35       ` Evgeniy Polyakov [this message]
2008-11-08 15:35         ` Evgeniy Polyakov
     [not found]         ` <20081108153545.GA3859-i6C2adt8DTjR7s880joybQ@public.gmane.org>
2008-11-08 16:58           ` Michael Kerrisk
2008-11-08 16:58             ` Michael Kerrisk
     [not found]             ` <cfd18e0f0811080858k7f6cddadg962771ed0cb3bdb8-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-11-08 17:04               ` Robert Love
2008-11-08 17:04                 ` Robert Love
     [not found]                 ` <acdcfe7e0811080904y7eb461d3n70b0765d8b1e9011-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-11-08 17:27                   ` Evgeniy Polyakov
2008-11-08 17:27                     ` Evgeniy Polyakov
2008-11-10 15:20               ` Evgeniy Polyakov
2008-11-10 15:20                 ` Evgeniy Polyakov
     [not found]                 ` <20081110152043.GB15796-i6C2adt8DTjR7s880joybQ@public.gmane.org>
2008-11-10 17:15                   ` Michael Kerrisk
2008-11-10 17:15                     ` Michael Kerrisk
     [not found]                     ` <cfd18e0f0811100915o8ea98a0s816921cee3163c1c-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-11-10 17:20                       ` Evgeniy Polyakov
2008-11-10 17:20                         ` Evgeniy Polyakov
     [not found] <acdcfe7e0811081035l56eedf05x8b3b7ee2fc01eee6@mail.gmail.com>
     [not found] ` <acdcfe7e0811081035l56eedf05x8b3b7ee2fc01eee6-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2008-11-08 18:40   ` Evgeniy Polyakov
2008-11-08 18:40     ` Evgeniy Polyakov
     [not found]     ` <20081108184013.GA11888-i6C2adt8DTjR7s880joybQ@public.gmane.org>
2008-11-08 22:03       ` Evgeniy Polyakov
2008-11-08 22:03         ` Evgeniy Polyakov

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=20081108153545.GA3859@ioremap.net \
    --to=zbr-i6c2adt8dtjr7s880joybq@public.gmane.org \
    --cc=linux-api-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
    --cc=linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org \
    --cc=mtk.manpages-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org \
    --cc=rlove-L7G0xEPcOZbYtjvyW6yDsg@public.gmane.org \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line before the message body.
This is an external index of several public inboxes,
see mirroring instructions on how to clone and mirror
all data and code used by this external index.