Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-28 Thread Eric W. Biederman
"Serge E. Hallyn" writes: >> I was aware of FUSE but hadn't ever looked at it much. Looking at it >> now, this isn't going to satisfy any of the use cases I know about, >> which are wanting to use filesystems supported in-kernel (isofs, ext*). >> I don't see that any of these have a FUSE implement

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-28 Thread Serge Hallyn
Quoting James Bottomley (james.bottom...@hansenpartnership.com): > On Mon, 2014-05-26 at 00:24 +0200, Serge E. Hallyn wrote: > > Quoting James Bottomley (james.bottom...@hansenpartnership.com): > > > On Sat, 2014-05-24 at 22:25 +, Serge Hallyn wrote: > > > > Quoting James Bottomley (james.botto

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-28 Thread Serge E. Hallyn
Quoting Seth Forshee (seth.fors...@canonical.com): > On Fri, May 23, 2014 at 03:23:50PM -0700, Eric W. Biederman wrote: > > Serge Hallyn writes: > > > > > Quoting Eric W. Biederman (ebied...@xmission.com): > > >> > > >> > > >> >> Ultimately the technical challenge is how do we create a block de

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-28 Thread Seth Forshee
On Fri, May 23, 2014 at 03:23:50PM -0700, Eric W. Biederman wrote: > Serge Hallyn writes: > > > Quoting Eric W. Biederman (ebied...@xmission.com): > >> > >> > >> >> Ultimately the technical challenge is how do we create a block device > >> >> that is safe for a user who does not have any capabi

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-28 Thread James Bottomley
On Mon, 2014-05-26 at 00:24 +0200, Serge E. Hallyn wrote: > Quoting James Bottomley (james.bottom...@hansenpartnership.com): > > On Sat, 2014-05-24 at 22:25 +, Serge Hallyn wrote: > > > Quoting James Bottomley (james.bottom...@hansenpartnership.com): > > > > On Fri, 2014-05-23 at 11:20 +0300, M

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-25 Thread Serge E. Hallyn
Quoting James Bottomley (james.bottom...@hansenpartnership.com): > On Sat, 2014-05-24 at 22:25 +, Serge Hallyn wrote: > > Quoting James Bottomley (james.bottom...@hansenpartnership.com): > > > On Fri, 2014-05-23 at 11:20 +0300, Marian Marinov wrote: > > > > On 05/20/2014 05:19 PM, Serge Hallyn

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-25 Thread James Bottomley
On Sat, 2014-05-24 at 22:25 +, Serge Hallyn wrote: > Quoting James Bottomley (james.bottom...@hansenpartnership.com): > > On Fri, 2014-05-23 at 11:20 +0300, Marian Marinov wrote: > > > On 05/20/2014 05:19 PM, Serge Hallyn wrote: > > > > Quoting Andy Lutomirski (l...@amacapital.net): > > > >> On

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-24 Thread Serge Hallyn
Quoting James Bottomley (james.bottom...@hansenpartnership.com): > On Fri, 2014-05-23 at 11:20 +0300, Marian Marinov wrote: > > On 05/20/2014 05:19 PM, Serge Hallyn wrote: > > > Quoting Andy Lutomirski (l...@amacapital.net): > > >> On May 15, 2014 1:26 PM, "Serge E. Hallyn" wrote: > > >>> > > >>>

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-23 Thread Eric W. Biederman
Serge Hallyn writes: > Quoting Eric W. Biederman (ebied...@xmission.com): >> >> >> >> Ultimately the technical challenge is how do we create a block device >> >> that is safe for a user who does not have any capabilities to use, and >> >> what can we do with that block device to make it useful.

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-23 Thread Andy Lutomirski
On Fri, May 23, 2014 at 6:16 AM, James Bottomley wrote: > On Fri, 2014-05-23 at 11:20 +0300, Marian Marinov wrote: >> On 05/20/2014 05:19 PM, Serge Hallyn wrote: >> > Quoting Andy Lutomirski (l...@amacapital.net): >> >> On May 15, 2014 1:26 PM, "Serge E. Hallyn" wrote: >> >>> >> >>> Quoting Richa

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-23 Thread James Bottomley
On Fri, 2014-05-23 at 11:20 +0300, Marian Marinov wrote: > On 05/20/2014 05:19 PM, Serge Hallyn wrote: > > Quoting Andy Lutomirski (l...@amacapital.net): > >> On May 15, 2014 1:26 PM, "Serge E. Hallyn" wrote: > >>> > >>> Quoting Richard Weinberger (rich...@nod.at): > Am 15.05.2014 21:50, sch

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-23 Thread Marian Marinov
-BEGIN PGP SIGNED MESSAGE- Hash: SHA1 On 05/20/2014 05:19 PM, Serge Hallyn wrote: > Quoting Andy Lutomirski (l...@amacapital.net): >> On May 15, 2014 1:26 PM, "Serge E. Hallyn" wrote: >>> >>> Quoting Richard Weinberger (rich...@nod.at): Am 15.05.2014 21:50, schrieb Serge Hallyn: >>>

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-21 Thread Serge Hallyn
Quoting Eric W. Biederman (ebied...@xmission.com): > > > >> Ultimately the technical challenge is how do we create a block device > >> that is safe for a user who does not have any capabilities to use, and > >> what can we do with that block device to make it useful. > > > > Yes, and I'd like to

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-21 Thread Eric W. Biederman
>> Ultimately the technical challenge is how do we create a block device >> that is safe for a user who does not have any capabilities to use, and >> what can we do with that block device to make it useful. > > Yes, and I'd like to get started solving those challenges. But I also > don't think we

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-20 Thread Serge Hallyn
Quoting Serge Hallyn (serge.hal...@ubuntu.com): > Quoting Seth Forshee (seth.fors...@canonical.com): > > On Sun, May 18, 2014 at 04:44:58AM +0200, Serge E. Hallyn wrote: > > > Quoting Seth Forshee (seth.fors...@canonical.com): > > > > On Fri, May 16, 2014 at 09:31:37PM -0700, Eric W. Biederman wrot

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-20 Thread Seth Forshee
On Mon, May 19, 2014 at 05:04:55PM -0700, Eric W. Biederman wrote: > Seth Forshee writes: > > > What I set out for was feature parity between loop devices in a secure > > container and loop devices on the host. Since some operations currently > > check for system-wide CAP_SYS_ADMIN, the only way

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-20 Thread Serge Hallyn
Quoting Andy Lutomirski (l...@amacapital.net): > On May 15, 2014 1:26 PM, "Serge E. Hallyn" wrote: > > > > Quoting Richard Weinberger (rich...@nod.at): > > > Am 15.05.2014 21:50, schrieb Serge Hallyn: > > > > Quoting Richard Weinberger (richard.weinber...@gmail.com): > > > >> On Thu, May 15, 2014

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-20 Thread Serge Hallyn
Quoting Michael H. Warfield (m...@wittsend.com): > On Mon, 2014-05-19 at 17:04 -0700, Eric W. Biederman wrote: > > Seth Forshee writes: > > > > > What I set out for was feature parity between loop devices in a secure > > > container and loop devices on the host. Since some operations currently >

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-20 Thread Serge Hallyn
Quoting Seth Forshee (seth.fors...@canonical.com): > On Sun, May 18, 2014 at 04:44:58AM +0200, Serge E. Hallyn wrote: > > Quoting Seth Forshee (seth.fors...@canonical.com): > > > On Fri, May 16, 2014 at 09:31:37PM -0700, Eric W. Biederman wrote: > > > > Greg Kroah-Hartman writes: > > > > > > > >

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-19 Thread Michael H. Warfield
On Mon, 2014-05-19 at 17:04 -0700, Eric W. Biederman wrote: > Seth Forshee writes: > > > What I set out for was feature parity between loop devices in a secure > > container and loop devices on the host. Since some operations currently > > check for system-wide CAP_SYS_ADMIN, the only way I see t

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-19 Thread Eric W. Biederman
Seth Forshee writes: > What I set out for was feature parity between loop devices in a secure > container and loop devices on the host. Since some operations currently > check for system-wide CAP_SYS_ADMIN, the only way I see to accomplish > this is to push knowledge of the user namespace farther

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-19 Thread Andy Lutomirski
On May 15, 2014 1:26 PM, "Serge E. Hallyn" wrote: > > Quoting Richard Weinberger (rich...@nod.at): > > Am 15.05.2014 21:50, schrieb Serge Hallyn: > > > Quoting Richard Weinberger (richard.weinber...@gmail.com): > > >> On Thu, May 15, 2014 at 4:08 PM, Greg Kroah-Hartman > > >> wrote: > > >>> Then

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-19 Thread Seth Forshee
On Sun, May 18, 2014 at 04:44:58AM +0200, Serge E. Hallyn wrote: > Quoting Seth Forshee (seth.fors...@canonical.com): > > On Fri, May 16, 2014 at 09:31:37PM -0700, Eric W. Biederman wrote: > > > Greg Kroah-Hartman writes: > > > > > > > On Fri, May 16, 2014 at 01:49:59AM +, Serge Hallyn wrote:

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-17 Thread Serge E. Hallyn
Quoting Seth Forshee (seth.fors...@canonical.com): > On Fri, May 16, 2014 at 09:31:37PM -0700, Eric W. Biederman wrote: > > Greg Kroah-Hartman writes: > > > > > On Fri, May 16, 2014 at 01:49:59AM +, Serge Hallyn wrote: > > >> > I think having to pick and choose what device nodes you want in a

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-17 Thread Serge E. Hallyn
Quoting James Bottomley (james.bottom...@hansenpartnership.com): > On Fri, 2014-05-16 at 11:57 -0700, Greg Kroah-Hartman wrote: > > On Fri, May 16, 2014 at 09:06:07AM -0500, Seth Forshee wrote: > > > On Thu, May 15, 2014 at 09:35:32PM -0700, Greg Kroah-Hartman wrote: > > > > On Fri, May 16, 2014 at

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-17 Thread Seth Forshee
On Fri, May 16, 2014 at 09:31:37PM -0700, Eric W. Biederman wrote: > Greg Kroah-Hartman writes: > > > On Fri, May 16, 2014 at 01:49:59AM +, Serge Hallyn wrote: > >> > I think having to pick and choose what device nodes you want in a > >> > container is a good thing. Becides, you would have t

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-17 Thread Michael H. Warfield
On Thu, 2014-05-15 at 21:35 -0700, Greg Kroah-Hartman wrote: > On Fri, May 16, 2014 at 01:49:59AM +, Serge Hallyn wrote: > > > I think having to pick and choose what device nodes you want in a > > > container is a good thing. Becides, you would have to do the same thing > > > in the kernel any

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-16 Thread Eric W. Biederman
Greg Kroah-Hartman writes: > On Fri, May 16, 2014 at 01:49:59AM +, Serge Hallyn wrote: >> > I think having to pick and choose what device nodes you want in a >> > container is a good thing. Becides, you would have to do the same thing >> > in the kernel anyway, what's wrong with userspace ma

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-16 Thread Seth Forshee
On Fri, May 16, 2014 at 12:28:35PM -0700, James Bottomley wrote: > On Fri, 2014-05-16 at 11:57 -0700, Greg Kroah-Hartman wrote: > > On Fri, May 16, 2014 at 09:06:07AM -0500, Seth Forshee wrote: > > > On Thu, May 15, 2014 at 09:35:32PM -0700, Greg Kroah-Hartman wrote: > > > > On Fri, May 16, 2014 at

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-16 Thread Michael H. Warfield
On Fri, 2014-05-16 at 12:20 -0700, James Bottomley wrote: > On Thu, 2014-05-15 at 21:42 -0400, Michael H. Warfield wrote: > > On Thu, 2014-05-15 at 15:15 -0700, Greg Kroah-Hartman wrote: > > > > PS - Apparently both parallels and Michael independently > > > > project devices which are hot-plugged o

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-16 Thread James Bottomley
On Fri, 2014-05-16 at 11:57 -0700, Greg Kroah-Hartman wrote: > On Fri, May 16, 2014 at 09:06:07AM -0500, Seth Forshee wrote: > > On Thu, May 15, 2014 at 09:35:32PM -0700, Greg Kroah-Hartman wrote: > > > On Fri, May 16, 2014 at 01:49:59AM +, Serge Hallyn wrote: > > > > > I think having to pick a

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-16 Thread James Bottomley
On Thu, 2014-05-15 at 21:42 -0400, Michael H. Warfield wrote: > On Thu, 2014-05-15 at 15:15 -0700, Greg Kroah-Hartman wrote: > > > PS - Apparently both parallels and Michael independently > > > project devices which are hot-plugged on the host into containers. > > > That also seems like something w

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-16 Thread Greg Kroah-Hartman
On Fri, May 16, 2014 at 09:06:07AM -0500, Seth Forshee wrote: > On Thu, May 15, 2014 at 09:35:32PM -0700, Greg Kroah-Hartman wrote: > > On Fri, May 16, 2014 at 01:49:59AM +, Serge Hallyn wrote: > > > > I think having to pick and choose what device nodes you want in a > > > > container is a good

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-16 Thread Seth Forshee
On Fri, May 16, 2014 at 11:28:28AM -0400, Michael H. Warfield wrote: > On Fri, 2014-05-16 at 09:06 -0500, Seth Forshee wrote: > > On Thu, May 15, 2014 at 09:35:32PM -0700, Greg Kroah-Hartman wrote: > > > On Fri, May 16, 2014 at 01:49:59AM +, Serge Hallyn wrote: > > > > > I think having to pick

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-16 Thread Michael H. Warfield
On Fri, 2014-05-16 at 09:06 -0500, Seth Forshee wrote: > On Thu, May 15, 2014 at 09:35:32PM -0700, Greg Kroah-Hartman wrote: > > On Fri, May 16, 2014 at 01:49:59AM +, Serge Hallyn wrote: > > > > I think having to pick and choose what device nodes you want in a > > > > container is a good thing.

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-16 Thread Seth Forshee
On Thu, May 15, 2014 at 09:35:32PM -0700, Greg Kroah-Hartman wrote: > On Fri, May 16, 2014 at 01:49:59AM +, Serge Hallyn wrote: > > > I think having to pick and choose what device nodes you want in a > > > container is a good thing. Becides, you would have to do the same thing > > > in the ker

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-16 Thread Richard Weinberger
On Fri, May 16, 2014 at 3:42 AM, Michael H. Warfield wrote: > On Thu, 2014-05-15 at 15:15 -0700, Greg Kroah-Hartman wrote: >> On Thu, May 15, 2014 at 05:42:54PM +, Serge Hallyn wrote: >> > What exactly defines '"normal" use case for a container'? > >> Well, I'd say "acting like a virtual machi

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-15 Thread Greg Kroah-Hartman
On Fri, May 16, 2014 at 01:49:59AM +, Serge Hallyn wrote: > > I think having to pick and choose what device nodes you want in a > > container is a good thing. Becides, you would have to do the same thing > > in the kernel anyway, what's wrong with userspace making the decision > > here, especi

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-15 Thread Serge Hallyn
Quoting Greg Kroah-Hartman (gre...@linuxfoundation.org): > On Thu, May 15, 2014 at 05:42:54PM +, Serge Hallyn wrote: > > What exactly defines '"normal" use case for a container'? > > Well, I'd say "acting like a virtual machine" is a good start :) > > > Not too long ago much of what we can no

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-15 Thread Michael H. Warfield
On Thu, 2014-05-15 at 15:15 -0700, Greg Kroah-Hartman wrote: > On Thu, May 15, 2014 at 05:42:54PM +, Serge Hallyn wrote: > > What exactly defines '"normal" use case for a container'? > Well, I'd say "acting like a virtual machine" is a good start :) Ok... And virtual machines (VirtualBox, VM

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-15 Thread Greg Kroah-Hartman
On Thu, May 15, 2014 at 05:42:54PM +, Serge Hallyn wrote: > What exactly defines '"normal" use case for a container'? Well, I'd say "acting like a virtual machine" is a good start :) > Not too long ago much of what we can now do with network namespaces > was not a normal container use case.

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-15 Thread Richard Weinberger
Am 15.05.2014 22:26, schrieb Serge E. Hallyn: > Quoting Richard Weinberger (rich...@nod.at): >> Am 15.05.2014 21:50, schrieb Serge Hallyn: >>> Quoting Richard Weinberger (richard.weinber...@gmail.com): On Thu, May 15, 2014 at 4:08 PM, Greg Kroah-Hartman wrote: > Then don't use a cont

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-15 Thread Serge E. Hallyn
Quoting Richard Weinberger (rich...@nod.at): > Am 15.05.2014 21:50, schrieb Serge Hallyn: > > Quoting Richard Weinberger (richard.weinber...@gmail.com): > >> On Thu, May 15, 2014 at 4:08 PM, Greg Kroah-Hartman > >> wrote: > >>> Then don't use a container to build such a thing, or fix the build > >

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-15 Thread Richard Weinberger
Am 15.05.2014 21:50, schrieb Serge Hallyn: > Quoting Richard Weinberger (richard.weinber...@gmail.com): >> On Thu, May 15, 2014 at 4:08 PM, Greg Kroah-Hartman >> wrote: >>> Then don't use a container to build such a thing, or fix the build >>> scripts to not do that :) >> >> I second this. >> To m

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-15 Thread Serge Hallyn
Quoting Richard Weinberger (richard.weinber...@gmail.com): > On Thu, May 15, 2014 at 4:08 PM, Greg Kroah-Hartman > wrote: > > Then don't use a container to build such a thing, or fix the build > > scripts to not do that :) > > I second this. > To me it looks like some folks try to (ab)use Linux c

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-15 Thread Richard Weinberger
On Thu, May 15, 2014 at 4:08 PM, Greg Kroah-Hartman wrote: > Then don't use a container to build such a thing, or fix the build > scripts to not do that :) I second this. To me it looks like some folks try to (ab)use Linux containers for purposes where KVM would much better fit in. Please don't p

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-15 Thread Seth Forshee
On Thu, May 15, 2014 at 05:42:54PM +, Serge Hallyn wrote: > > > Serge mentioned something to me about a loopdevfs (?) thing that someone > > > else is working on. That would seem to be a better solution in this > > > particular case but I don't know much about it or where it's at. > > > > Ok,

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-15 Thread Serge Hallyn
Quoting Greg Kroah-Hartman (gre...@linuxfoundation.org): > On Thu, May 15, 2014 at 09:42:17AM -0400, Michael H. Warfield wrote: > > On Wed, 2014-05-14 at 21:00 -0700, Greg Kroah-Hartman wrote: > > > On Wed, May 14, 2014 at 10:15:27PM -0500, Seth Forshee wrote: > > > > On Wed, May 14, 2014 at 10:17:

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-15 Thread Greg Kroah-Hartman
On Thu, May 15, 2014 at 09:42:17AM -0400, Michael H. Warfield wrote: > On Wed, 2014-05-14 at 21:00 -0700, Greg Kroah-Hartman wrote: > > On Wed, May 14, 2014 at 10:15:27PM -0500, Seth Forshee wrote: > > > On Wed, May 14, 2014 at 10:17:31PM -0400, Michael H. Warfield wrote: > > > > > > Using devtmpfs

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-15 Thread Michael H. Warfield
On Wed, 2014-05-14 at 21:00 -0700, Greg Kroah-Hartman wrote: > On Wed, May 14, 2014 at 10:15:27PM -0500, Seth Forshee wrote: > > On Wed, May 14, 2014 at 10:17:31PM -0400, Michael H. Warfield wrote: > > > > > Using devtmpfs is one possible > > > > > solution, and it would have the added benefit of m

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-14 Thread Greg Kroah-Hartman
On Wed, May 14, 2014 at 10:15:27PM -0500, Seth Forshee wrote: > On Wed, May 14, 2014 at 10:17:31PM -0400, Michael H. Warfield wrote: > > > > Using devtmpfs is one possible > > > > solution, and it would have the added benefit of making container setup > > > > simpler. But simply letting containers

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-14 Thread Seth Forshee
On Wed, May 14, 2014 at 10:17:31PM -0400, Michael H. Warfield wrote: > > > Using devtmpfs is one possible > > > solution, and it would have the added benefit of making container setup > > > simpler. But simply letting containers mount devtmpfs isn't sufficient > > > since the container may need to

Re: [lxc-devel] [RFC PATCH 00/11] Add support for devtmpfs in user namespaces

2014-05-14 Thread Michael H. Warfield
On Wed, 2014-05-14 at 18:32 -0700, Greg Kroah-Hartman wrote: > On Wed, May 14, 2014 at 04:34:48PM -0500, Seth Forshee wrote: > > Unpriveleged containers cannot run mknod, making it difficult to support > > devices which appear at runtime. > Wait. > Why would you even want a container to see a "ne