Le 01/11/2018 à 15:16, Eric W. Biederman a écrit : > Laurent Vivier <laurent@xxxxxxxxx> writes: > >> On 01/11/2018 04:51, Jann Horn wrote: >>> On Thu, Nov 1, 2018 at 3:59 AM James Bottomley >>> <James.Bottomley@xxxxxxxxxxxxxxxxxxxxx> wrote: >>>> >>>> On Tue, 2018-10-16 at 11:52 +0200, Laurent Vivier wrote: >>>>> Hi, >>>>> >>>>> Any comment on this last version? >>>>> >>>>> Any chance to be merged? >>>> >>>> I've got a use case for this: I went to one of the Graphene talks in >>>> Edinburgh and it struck me that we seem to keep reinventing the type of >>>> sandboxing that qemu-user already does. However if you want to do an >>>> x86 on x86 sandbox, you can't currently use the binfmt_misc mechanism >>>> because that has you running *every* binary on the system emulated. >>>> Doing it per user namespace fixes this problem and allows us to at >>>> least cut down on all the pointless duplication. >>> >>> Waaaaaait. What? qemu-user does not do "sandboxing". qemu-user makes >>> your code slower and *LESS* secure. As far as I know, qemu-user is >>> only intended for purposes like development and testing. >>> >> >> I think the idea here is not to run qemu, but to use an interpreter >> (something like gVisor) into a container to control the binaries >> execution inside the container without using this interpreter on the >> host itself (container and host shares the same binfmt_misc >> magic/mask). > > Please remind me of this patchset after the merge window is over, and if > there are no issues I will take it via my user namespace branch. > > Last I looked I had a concern that some of the permission check issues > were being papered over by using override cred instead of fixing the > deaper code. Sometimes they are necessary but seeing work-arounds > instead of fixes for problems tends to be a maintenance issue, possibly > with security consequences. Best is if the everyone agrees on how all > of the interfaces work so their are no surprises. I don't know where we are in the merge window, but is there something I can do to have this merged? Thanks, Laurent
