Messages in this thread | | | Subject | Re: compat: autofs v5 packet size ambiguity - update | From | Ian Kent <> | Date | Wed, 22 Feb 2012 12:20:10 +0800 |
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On Tue, 2012-02-21 at 19:47 -0800, Linus Torvalds wrote: > On Tue, Feb 21, 2012 at 7:33 PM, Linus Torvalds > <torvalds@linux-foundation.org> wrote: > > > > But I'm sure that the autofs daemon does something simple that we can > > depend on in practice. > > I didn't find the most recent source code, but the first thing that > automount.c does after calling "mount" (which is a for+exec, so we > cannot take the mounting is_compat_task() into account is to open the > new root for the ioctlfd, and then it does a stat. > > And then it does a AUTOFS_IOC_PROTOVER ioctl to see what the protocol > version is. > > So we could just decide that > > (a) we add a mount option for the packet size (or just "v6" - which > would be "v5 with a fixed packet size") > > (b) in the absence of an explicit mount option, we look at > is_compat_task() for the first AUTOFS_IOC_PROTOVER ioctl we get. > > That looks fairly straightforward and safe. Hmm? > > Where are the automount sources supposed to be, anyway? kernel.org has > a v5 directory, but it's empty.
I'm repopulating the autofs directory with content right now. I had some difficulty with getting appropriate signatures for my PGP key, consequently my account wasn't activated for quite. The upshot of that is I wasn't aware of announcements about kup either. Anyway, I've sorted that out and I'm trying to upload the content right now.
The git repo has been available for a while now though @ /pub/scm/linux/kernel/git/raven/autofs
at least that is the place I thought it should go? Ian
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