Re: [PATCH] driver-core: devtmpfs - driver core maintained /dev tmpfs

[Michael Tokarev]

Alan Jenkins wrote:
> On 5/2/09, Kay Sievers <kay.sievers@xxxxxxxx> wrote:
[]
> > > And it
> > > gives a nice clean way for new initramfs' to test for this feature -
> > > when they try to mount it, it fails.  It would seem to make for a
> > > rather smoother migration path.
> > I think that is all covered just fine.
>
> Oh, I see.
>
> grep "/dev" /proc/mounts > /dev/null

Oh no.  This one will match all your /dev/sda1 etc too :)
What yo want to do is either

  grep -w /dev /proc/mount

or

 awk '$2 == "/dev" { exit 0; } END { exit 1; }' /proc/mounts

or something similar.  To distinguish between the following
two cases:

/dev/sda1 / ext3 rw,noatime,data=ordered 0 0
devfs /dev tmpfs rw,nosuid,size=512k,mode=755 0 0

/mjt
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