[uml-devel] [Announce] mountlo 0.5 - Loopback mounting in userspace

[uml-devel] [Announce] mountlo 0.5 - Loopback mounting in userspace

[Miklos Szeredi]

I'm proud to announce a new version of my pet project 'mountlo', a
utility which works similarly to 'mount -o loop', but the filesystem
runs entirely in userspace.

While arguably it is quite useless, I like it because it combines some
of my favorite technologies (Linux, UML and FUSE) with very little
additional glue code.

Features:

 o safe mounting of filesystem images for unprivileged users
 o all disk-filesystem types supported in a single binary

What's new since 0.2:

 o support for partitioned disk images
 o support for mount options
 o error reporting both from mount and the kernel
 o achieves reasonable performance using SKAS0 mode of UML
 o verbose and debug modes

An i386 binary (2MB) is available at:

  http://prdownloads.sourceforge.net/fuse/mountlo-i386-0.5.tar.gz

Requirements for running the binary are:

  - FUSE kernel module.  Since 2.6.14, this is included in mainline
  - FUSE utilities (at least version 2.2).

Compiling from source needs the following components:

   - http://prdownloads.sourceforge.net/fuse/mountlo-0.5.tar.gz
   - Linux-2.6.15 kernel source
   - FUSE-2.5 or later devel package (or source installation)

Comments and bug reports are welcome.

Miklos


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[Announce] mountlo 0.5 - Loopback mounting in userspace

[Miklos Szeredi]

I'm proud to announce a new version of my pet project 'mountlo', a
utility which works similarly to 'mount -o loop', but the filesystem
runs entirely in userspace.

While arguably it is quite useless, I like it because it combines some
of my favorite technologies (Linux, UML and FUSE) with very little
additional glue code.

Features:

 o safe mounting of filesystem images for unprivileged users
 o all disk-filesystem types supported in a single binary

What's new since 0.2:

 o support for partitioned disk images
 o support for mount options
 o error reporting both from mount and the kernel
 o achieves reasonable performance using SKAS0 mode of UML
 o verbose and debug modes

An i386 binary (2MB) is available at:

  http://prdownloads.sourceforge.net/fuse/mountlo-i386-0.5.tar.gz

Requirements for running the binary are:

  - FUSE kernel module.  Since 2.6.14, this is included in mainline
  - FUSE utilities (at least version 2.2).

Compiling from source needs the following components:

   - http://prdownloads.sourceforge.net/fuse/mountlo-0.5.tar.gz
   - Linux-2.6.15 kernel source
   - FUSE-2.5 or later devel package (or source installation)

Comments and bug reports are welcome.

Miklos

Re: [uml-devel] [Announce] mountlo 0.5 - Loopback mounting in userspace

[Jeff Dike]

On Mon, Feb 27, 2006 at 04:10:38PM +0100, Miklos Szeredi wrote:
> I'm proud to announce a new version of my pet project 'mountlo', a
> utility which works similarly to 'mount -o loop', but the filesystem
> runs entirely in userspace.
> 
> While arguably it is quite useless, I like it because it combines some
> of my favorite technologies (Linux, UML and FUSE) with very little
> additional glue code.

Very cute.  I'm in the process of doing something similar, except I'm
integrating a FUSE server into the UML kernel to export the UML
filesystem to the host.  So far, I can cd and ls inside the mount -
lookup and readdir are implemented.

				Jeff


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Re: [uml-devel] [Announce] mountlo 0.5 - Loopback mounting in userspace

[Jeff Dike]

On Mon, Feb 27, 2006 at 04:10:38PM +0100, Miklos Szeredi wrote:
> I'm proud to announce a new version of my pet project 'mountlo', a
> utility which works similarly to 'mount -o loop', but the filesystem
> runs entirely in userspace.
> 
> While arguably it is quite useless, I like it because it combines some
> of my favorite technologies (Linux, UML and FUSE) with very little
> additional glue code.

Very cute.  I'm in the process of doing something similar, except I'm
integrating a FUSE server into the UML kernel to export the UML
filesystem to the host.  So far, I can cd and ls inside the mount -
lookup and readdir are implemented.

				Jeff

Re: [uml-devel] [Announce] mountlo 0.5 - Loopback mounting in userspace

[Miklos Szeredi]

> > I'm proud to announce a new version of my pet project 'mountlo', a
> > utility which works similarly to 'mount -o loop', but the filesystem
> > runs entirely in userspace.
> > 
> > While arguably it is quite useless, I like it because it combines some
> > of my favorite technologies (Linux, UML and FUSE) with very little
> > additional glue code.
> 
> Very cute.  I'm in the process of doing something similar, except I'm
> integrating a FUSE server into the UML kernel to export the UML
> filesystem to the host.  So far, I can cd and ls inside the mount -
> lookup and readdir are implemented.

Great.  I always wanted to do the exporting inside the kernel, but put
it off as being too hard :)

Miklos


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that extends applications into web and mobile media. Attend the live webcast
and join the prime developer group breaking into this new coding territory!
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Re: [uml-devel] [Announce] mountlo 0.5 - Loopback mounting in userspace

[Miklos Szeredi]

> > I'm proud to announce a new version of my pet project 'mountlo', a
> > utility which works similarly to 'mount -o loop', but the filesystem
> > runs entirely in userspace.
> > 
> > While arguably it is quite useless, I like it because it combines some
> > of my favorite technologies (Linux, UML and FUSE) with very little
> > additional glue code.
> 
> Very cute.  I'm in the process of doing something similar, except I'm
> integrating a FUSE server into the UML kernel to export the UML
> filesystem to the host.  So far, I can cd and ls inside the mount -
> lookup and readdir are implemented.

Great.  I always wanted to do the exporting inside the kernel, but put
it off as being too hard :)

Miklos