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<H1>[Mageia-dev] [soft-commits] [2494] Port stage2 to use udev.</H1>
<B>Thierry Vignaud</B>
<A HREF="mailto:mageia-dev%40mageia.org?Subject=Re%3A%20%5BMageia-dev%5D%20%5Bsoft-commits%5D%20%5B2494%5D%20Port%20stage2%20to%20use%20udev.&In-Reply-To=%3CCAONrEtb14fH7sPrZNZNZj04kScmT-k6ULwPnVZcor7R23wH58Q%40mail.gmail.com%3E"
TITLE="[Mageia-dev] [soft-commits] [2494] Port stage2 to use udev.">thierry.vignaud at gmail.com
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<I>Tue Dec 20 12:42:38 CET 2011</I>
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<PRE>On 20 December 2011 12:19, Colin Guthrie <<A HREF="https://www.mageia.org/mailman/listinfo/mageia-dev">colin at guthr.ie</A>> wrote:
>>><i>  get_needed_files: xs
</I>>>><i>      REP4PMS=$(REP4PMS) ../../tools/install-xml-file-list share/list.xml
</I>>>><i> $(DEST)
</I>>>><i> +    mkdir -p $(DEST)/run
</I>>><i>
</I>>><i> That won't work. stage2 is mounted by stage1 in /tmp/stage2
</I>>><i> so you want to create & include it in stage1
</I>><i>
</I>><i> Right... strangely enough some stuff still worked fine... e.g.
</I>><i> /lib/udev/udevd exists inside the installer shell.... so that's why I
</I>><i> thought all was well. I double check a few things.
</I>><i>
</I>><i> Technically it's not super important that /run exists anyway as I mkdir
</I>><i> it later, so this bit can probably be dropped.
</I>
Either you create it in stage1 or in the sub starting udev, but anyway
the Makefile should be reverted
>>><i> --- drakx/trunk/perl-install/install/install2.pm     2011-12-19 21:36:04 UTC
</I>>>><i> (rev 2493)
</I>>>><i> +++ drakx/trunk/perl-install/install/install2.pm     2011-12-19 22:47:15 UTC
</I>>>><i> (rev 2494)
</I>>>><i> @@ -395,6 +395,24 @@
</I>>>><i>      eval { fs::mount::mount('none', '/sys', 'sysfs', 1) };
</I>>>><i>      eval { touch('/root/non-chrooted-marker.DrakX') }; #- helps
</I>>>><i> distinguishing /root and /mnt/root when we don't know if we are chrooted
</I>>>><i>
</I>>>><i> +    # Ensure /run is mounted
</I>>>><i> +    mkdir "/run", 0755;
</I>>>><i> +    run_program::run("mount -t tmpfs -o mode=0755,nosuid,nodev tmpfs
</I>>>><i> /run");
</I>
having perms from both chown & mount is maybe a little too much
>>><i> +    mkdir "/run/udev", 0755;
</I>>>><i> +    mkdir "/run/udev/rules.d", 0755;
</I>
can be simplified mkdir_p("/run/udev/rules.d").
The perms should be OK through umask
>>><i> +    $ENV{UDEVRULESD} = "/run/udev/rules.d";
</I>>>><i> +
</I>>>><i> +    # Start up udev and trigger cold plugs
</I>>>><i> +    run_program::run("mount", "-t", "devtmpfs", "-o", "mode=0755,nosuid",
</I>>>><i> "devtmpfs", "/dev");
</I>>>><i> +    mkdir "/dev/pts", 0755;
</I>>>><i> +    run_program::run("mount", "-t", "devpts", "-o",
</I>>>><i> "gid=5,mode=620,noexec,nosuid", "devpts", "/dev/pts");
</I>>>><i> +    mkdir "/dev/shm", 0755;
</I>
This one should be better included in stage1 with other /dev stuff IMHO
See images/make_boot_img
>>><i> +    run_program::run("mount", "-t", "tmpfs", "-o",
</I>>>><i> "mode=1777,nosuid,nodev", "tmpfs", "/dev/shm");
</I>>>><i> +
</I>>>><i> +    run_program::run("/lib/udev/udevd", "--daemon",
</I>>>><i> "--resolve-names=never");
</I>
I guess it auto detach with --daemon?
If not we could use "raw({ detach => 1}," instead of "run("
I think you wan
>>><i> +    run_program::run("udevadm", "trigger", "--type=subsystems",
</I>>>><i> "--action=add");
</I>>>><i> +    run_program::run("udevadm", "trigger", "--type=devices",
</I>>>><i> "--action=add");
</I>
Since this will forces us to wait, you should either display a "please
wait dialog"
or better not run this as we'll only look at block devices quite a lot later
after accepting license & loading disks modules
>><i> 3) which bring me to the last item: you should run perl_checker
</I>>><i>     See /usr/share/doc/perl_checker/perl_checker.html &
</I>>><i>     /usr/share/doc/perl-MDK-Common/tutorial.html
</I>>><i> It can be simply called from within emacs (or vim)
</I>><i>
</I>><i> Cool, thanks. I'm not a perl-master so feel free to tidy this commit up
</I>><i> a bit if you have time, otherwise I'll try and tidy up my mess this
</I>><i> evening :)
</I>
There's no urgency so it's better if done by you so that
you eventually became a co maintainer of drakx :-)
BTW you may eventually include udev in rescue too
(but only once it's done in stage2)
See rescue/ && rescue/devices.pl
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