From: martin f krafft <madduck@madduck.net>
To: linux-hotplug@vger.kernel.org
Subject: Re: how does udev rename an interface?
Date: Sun, 26 Dec 2004 13:30:00 +0000 [thread overview]
Message-ID: <20041226133000.GA12391@fishbowl> (raw)
In-Reply-To: <20041226112849.GA8995@fishbowl>
[-- Attachment #1: Type: text/plain, Size: 1865 bytes --]
also sprach Kay Sievers <kay.sievers@vrfy.org> [2004.12.26.1333 +0100]:
> Right, if something brings up the netif earlier, udev can't do
> anything.
Therefore, ifplugd should really not be called in hotplug.d, but
through net.agent, huh?
> On a successful rename, udev calls the /etc/dev.d/net/hotplug.dev
> script, which calls the /etc/hotplug.d/default/default.hotplug
> again with the corrected environment.
From what I understand, udevsend is only one hook that is run, and
hotplug simply runs the next on competion. udevsend must therefore
somehow tell hotplug to abort the processing of remaining hooks
before invoking the /dev/dev.d script again. How does it do that?
With a non-zero exit code?
I am sorry for asking these questions... I am currently on an
ass-slow machine in my parents' house, and it would take me an hour
to figure this out... mutt takes 25 seconds to spawn. :/
> If /sbin/udevsend is used as the hotplug helper and udevd manages
> the complete hotplug event, only one correct hotplug netif call is
> visible to the hotplug scripts. The one for the old name will be
> "converted" to carry the new name and no second event needs to be
> faked.
Right, /etc/dev.d/net/hotplug.dev is the secret. It executes:
exec /etc/hotplug.d/default/default.hotplug net
if the interface was renamed. If I can figure out how it stops the
hotplug instance that invoked udev from running further hooks, we
got a winner.
Cheers,
--
martin; (greetings from the heart of the sun.)
\____ echo mailto: !#^."<*>"|tr "<*> mailto:" net@madduck
invalid/expired pgp subkeys? use subkeys.pgp.net as keyserver!
spamtraps: madduck.bogus@madduck.net
man muss noch chaos in sich haben
um einen tanzenden stern zu gebähren.
-- friedrich nietzsche
[-- Attachment #2: Digital signature --]
[-- Type: application/pgp-signature, Size: 189 bytes --]
next prev parent reply other threads:[~2004-12-26 13:30 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-12-26 11:28 how does udev rename an interface? martin f krafft
2004-12-26 12:33 ` Kay Sievers
2004-12-26 13:30 ` martin f krafft [this message]
2004-12-26 13:57 ` Kay Sievers
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=20041226133000.GA12391@fishbowl \
--to=madduck@madduck.net \
--cc=linux-hotplug@vger.kernel.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 a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).