[Tfug] [tfug] Announcing runfs

[Jude Nelson]

Well, it's a FUSE filesystem, so you just run it as follows:

$ runfs /path/to/mountpoint

Once mounted, it looks like and behaves like tmpfs, but if a process
creates a file in it and dies, the file gets removed automatically.

It's meant for holding things like PID files, lock files, UNIX domain
sockets and named pipes, which aren't supposed to live longer than the
process that created them anyway.  You could use it along side (or in place
of) tmpfs on /run.  I've been getting a lot of mileage out of it for
testing other programs that create temporary files like these but crash
before they can clean up.

I can make some debs and rpms for runfs and fskit, if anyone's interested :)

-Jude

On Tue, Oct 28, 2014 at 2:29 PM, Keith Smith <techlists at phpcoderusa.com>
wrote:

>
> Not sure how I would use something like this as a LAMP developer.
>
> Your gizmo seems really cool.  How would one use it?
>
>
> On 2014-10-27 21:36, Jude Nelson wrote:
>
>> Thanks!  I just wrote up a short blurb and example on it here, if
>> you're
>> interested: http://judecnelson.blogspot.com/2014/
>> 10/runfs-self-cleaning-ram-filesystem.html
>> [4]
>>
>> On Mon, Oct 27, 2014 at 8:35 PM, Keith Smith
>> <techlists at phpcoderusa.com> wrote:
>>
>>  Cool & Congrats!!
>>>
>>> On 2014-10-27 15:22, Jude Nelson wrote:
>>>
>>>  Hey everyone,
>>>>
>>>> In case anyone's interested, I've created an in-RAM filesystem
>>>> called
>>>> runfs for storing temporary files (similar to what /run is used
>>>> for).  The key difference is that once the process that creates
>>>> the
>>>> files dies, runfs automatically removes them.  You don't have to
>>>> worry about old PID files and sockets getting left around.
>>>>
>>>> The source code is here:  https://github.com/jcnelson/runfs [1]
>>>> [1]
>>>>
>>>> It's built with a filesystem SDK I also wrote, called fskit.
>>>> It's
>>>> code is here:  https://github.com/jcnelson/fskit [2] [2]
>>>>
>>>> Building and installing is super-simple:  just make and make
>>>> install.
>>>>
>>>> Any/all feedback welcome :)
>>>>
>>>> -Jude
>>>>
>>>> PS  This is the first of a few filesystems I intend to create.
>>>> Another one I'm working on will replace udev, and unlike udev, it
>>>> will
>>>> filter inodes based on the process that's asking and change their
>>>> permissions.  This will let e.g. the X server access /dev/dri
>>>> and
>>>> /dev/event/* without root or setuid, and will block all other
>>>> programs
>>>> from accessing them.
>>>>
>>>> Links:
>>>> ------
>>>> [1] https://github.com/jcnelson/runfs [1]
>>>> [2] https://github.com/jcnelson/fskit [2]
>>>>
>>>> _______________________________________________
>>>> Tucson Free Unix Group - tfug at tfug.org
>>>> Subscription Options:
>>>> http://www.tfug.org/mailman/listinfo/tfug_tfug.org [3]
>>>>
>>>
>>> --
>>> Keith Smith
>>>
>>> _______________________________________________
>>> Tucson Free Unix Group - tfug at tfug.org
>>> Subscription Options:
>>> http://www.tfug.org/mailman/listinfo/tfug_tfug.org [3]
>>>
>>
>>
>>
>> Links:
>> ------
>> [1] https://github.com/jcnelson/runfs
>> [2] https://github.com/jcnelson/fskit
>> [3] http://www.tfug.org/mailman/listinfo/tfug_tfug.org
>> [4]
>> http://judecnelson.blogspot.com/2014/10/runfs-self-
>> cleaning-ram-filesystem.html
>>
>> _______________________________________________
>> Tucson Free Unix Group - tfug at tfug.org
>> Subscription Options:
>> http://www.tfug.org/mailman/listinfo/tfug_tfug.org
>>
>
> --
> Keith Smith
>
> _______________________________________________
> Tucson Free Unix Group - tfug at tfug.org
> Subscription Options:
> http://www.tfug.org/mailman/listinfo/tfug_tfug.org
>
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