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List: linux-arch
Subject: Re: [PATCH] driver-core: devtmpfs - driver core maintained /dev tmpfs
From: Michael Tokarev <mjt () tls ! msk ! ru>
Date: 2009-05-03 7:29:20
Message-ID: 49FD47D0.2070802 () msgid ! tls ! msk ! ru
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Alan Jenkins wrote:
> On 5/2/09, Kay Sievers <kay.sievers@vrfy.org> 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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