lkml.org 
[lkml]   [2009]   [Sep]   [17]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
/
DateThu, 17 Sep 2009 22:31:13 +0200
FromIngo Molnar <>
SubjectRe: [bug] /etc/profile: line 30: /dev/null: Permission denied (Was: Re: [PATCH] Remove broken by design and by implementation devtmpfs maintenance disaster)

* Linus Torvalds <torvalds@linux-foundation.org> wrote:

> On Thu, 17 Sep 2009, Kay Sievers wrote:
>
> > On Thu, Sep 17, 2009 at 20:53, Ingo Molnar <mingo@elte.hu> wrote:
> > > I've reproduced a bug with the following .config options:
> > >
> > > ??CONFIG_DEVTMPFS=y
> > > ??CONFIG_DEVTMPFS_MOUNT=y
> > >
> > > /dev/null and /dev/zero are not read/writable to ordinary users,
> > > breaking normal bootup and login:
> >
> > Udev should run long before some ordinary/non-root user can login,
> > and apply the permissions as it always does. It's known to work on
> > Fedora, SUSE, Ubuntu. What kind of system/environment/setup is that
> > where you see this?
>
> I don't know if this is what Ingo does, but I have a few machines
> where I don't run the distro-supplied 'initrd' at all, because it's
> easier to boot without it. The Fedora initrd doesn't allow me to
> sanely set root filesystem parameters without totally rewriting the
> initrd image, which I'm not interested in, for example (they'll take
> effect for the root initrd, not the final root).

Correct: i'm booting raw bzImages, with /dev copied to the real /dev. To
this box udev is mostly an annoyance that slows down my bootup ;-)

Furthermore, this is a really old image, Fedora Core 6, where udev does
not get updated anymore. I still boot new kernels on it though, and it
worked fine up to now.

Ingo


\
 
 \ /
  Last update: 2009-09-17 22:33    [from the cache]
©2003-2010