Messages in this thread | | | Subject | Re: [Devel] Re: [PATCH 3/7] uts namespaces: use init_utsname when appropriate | From | (Eric W. Biederman) | Date | Sun, 09 Apr 2006 03:25:04 -0600 |
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Kir Kolyshkin <kir@openvz.org> writes:
> Sam Vilain wrote: > >>On Sat, 2006-04-08 at 01:09 -0600, Eric W. Biederman wrote: >> >> >>>>-#define ELF_PLATFORM (system_utsname.machine) >>>>+#define ELF_PLATFORM (init_utsname()->machine) >>>> #ifdef __KERNEL__ >>>> #define SET_PERSONALITY(ex, ibcs2) do { } while (0) >>>> >>>> >>>I think this one needs to be utsname()->machine. >>>Currently it doesn't matter. But Herbert has expressed >>>the desire to make a machine appear like an older one. >>> >>> >> >>This is extremely useful for faking it as "i386" on x86_64 systems, for >>instance. >> >> > Could 'setarch' be of any help here? Works fine for us. Or am I missing > something?
For the specific case that is clearly the better solution, as it already exists, and it handles the weird 32/64bit logic. The ELF_PLATFORM bit I was commenting on was 32bit only.
I'm not ready to implement any new functionality at the moment, but what I heard suggested and was it may be reasonable to allow machine to be modified on a per uts namespace basis. If that kind of thing is ever to happen ELF_PLATFORM needs to be per uts on x86. Actually allowing modification of machine is an entirely different conversation.
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