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SubjectRe: 2.5.59-mm9
On 08 Feb 2003, Georgi Chorbadzhiyski wrote:
>Jochen Hein wrote:
>> Andrew Morton <> writes:
>>>. Adam's cleanup and cutdown of devfs has been put back in again. We
>>> really need devfs users to test this and to report, please. (And not just
>>> to me! I'll only bounce it to Adam J. Richter <>
>>> anyway)
>> Ok, I patched 2.5.59 with Adam's patch and it boots fine. I miss the
>> file /dev/.devfsd - Debian uses that file to detect devfs and act
>> accordingly. Still in the first minutes, I'll get back when Linus has

>Slackware does the same.

Distributions that want to do something different for devfs
can parse /proc/mounts, or, less reliably, do statfs("/dev", &statfs_buf)
and look at statfs_buf.f_type. So, you still have this ability without
the need for additional kernel code.

It's worth noting that some devfs users may want the non-devfs
behavior (which I assume means creating /dev files during some
installation process) because they may have a script to save /dev
before shutdown and restore their additional /dev nodes at boot, so
you probably want to centralize this decision in some little script
anyhow. The devfsd (for the stock devfs) has a couple of commands
designed for this, although this can just as easily be done in scripts
for boot and shutdowns.

Also, I suppose that checking for /dev/.devfsd is an easy way
to detect _which_ devfs you are using, although I don't know if such a
check is useful, since you could start devfsd unconditionally and it
should just exit if the old devfs is not present.

Adam J. Richter __ ______________ 575 Oroville Road \ / Milpitas, California 95035
+1 408 309-6081 | g g d r a s i l United States of America
"Free Software For The Rest Of Us."
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