Is it possible to create a directory under /dev?

Andriy Gapon avg at icyb.net.ua
Thu May 22 07:02:16 UTC 2008


Carlos A. M. dos Santos wrote:
> On Wed, May 21, 2008 at 2:06 PM, Oliver Fromme <olli at lurza.secnetix.de> wrote:
>> Carlos A. M. dos Santos <> wrote:
>>  > I attempted this:
>>  >
>>  >      # mkdir /dev/foo
>>  >      mkdir: /dev/foo: Operation not supported
>>
>> DEVFS is a "virtual" filesystem [...]
> 
> I already knew that. :-)
> 
>>  > Any suggestions (besides creating it elsewhere, of course)?
>>
>> That depends on the purpose.  *Why* do you want to create
>> a subdirectory in /dev?  What do you want to do with it?
> 
> I intended to use it as the mount point for a filesystem.

I think this is a quite weird idea. Why would you want another 
filesystem under /dev? /dev is for devices! Maybe you want something 
like /mnt or whatever, unless you are developing your own "sub-" devfs.

But, by the way, there is a (slightly) more valid reason to want to 
create a directory under /dev, I recently had it. For one non-standard 
third-party application I needed to create a link to existing device in 
a certain subdirectory. I.e.:
/dev/subdirX/device -> /dev/deviceX
And I couldn't do that.
Or maybe link operation for devfs just needs to be taught about creating 
subdirectories on demand. I don't know.

-- 
Andriy Gapon


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