Messages in this thread | | | Date | Fri, 18 Sep 2009 21:50:05 +0200 | From | Ingo Molnar <> | Subject | Re: [bug] /etc/profile: line 30: /dev/null: Permission denied (Was: Re: [PATCH] Remove broken by design and by implementation devtmpfs maintenance disaster) |
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* Kay Sievers <kay.sievers@vrfy.org> wrote:
> On Fri, Sep 18, 2009 at 17:37, Kay Sievers <kay.sievers@vrfy.org> wrote: > > On Fri, Sep 18, 2009 at 17:05, Greg KH <greg@kroah.com> wrote: > >> On Fri, Sep 18, 2009 at 07:18:54AM -0700, Linus Torvalds wrote: > >>> > >>> On Thu, 17 Sep 2009, Greg KH wrote: > >>> > > >>> > I think the udev version in older Fedora releases can't handle this > >>> > kernel option, which is fine, just don't enable it. ??Newer versions can > >>> > handle it, right? > >>> > >>> .. conversely, if you can't be bothered to set up /dev/null and /dev/zero > >>> correctly, I would suggest that you not set them up AT ALL in devtmpfs. > >> > >> Fair enough. > >> > >>> The thing is, 0600 for those nodes is just _wrong_. Don't do it. > >> > >> Ok, Kay, care to just treat these as "special"? > > > > Sure, the patch I sent yesterday does that. We might want to drop the > > USB device node permissions (same as the proc nodes), but they are > > probably not needed? > > > > Ingo, do you possibly have a chance to test if your setup comes up > > with that? That would be great to know. > > With that patch, I can login as a normal user without any udev ever > started, and no static content copied to /dev.
Great. Please merge this without waiting me to clear up any of my (way too much) backlog and get it tested. The only hickup i had was the /dev/zero & /dev/null permission stuff that prevented ssh logins. With that fixed i'm a happy camper.
Self-contained /dev is great, udev is a total PITA on older distros (on this box it sometimes takes 3 minutes for udev to boot ...) so turning on devtmpfs and getting something functional in exchange is a big selling point IMO.
Btw., i never understood the separation of udev from the kernel. It's not like it makes any sense without a Linux kernel - and the separation just increases release cycle pain and causes (unnecessary) detachment from the actual kernel. Should be hosted in tools/udev/ or so ;-)
Ingo
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