On Mon, Oct 09, 2017 at 04:05:10PM +0100, Ian Jackson wrote:
> Markus Armbruster writes ("Re: [Qemu-devel] [PATCH 7/8] os-posix: Provide new
> -runasid option"):
> > The last thing the QEMU command line needs is more exotic options. Are
> > you sure we need a new one here? Can we make existing -runas serve?
> > Precedence: Coreutils[*]. Pseudo-code:
> >
> > if argument is a decimal number starting with '+':
> > user ID
> > else if argument is a valid user name:
> > user name
> > else if argument is a valid user ID:
> > user ID
> > else:
> > error
>
> I can do this. So -runas <uid>.<gid> then. I don't think it makes
> sense to try to -runas <uid> because: you wouldn't have a username
> to pass to initgroups: not calling initgroups would be a bear trap;
> and otherwise we wouldn't know what gid to use.
Just use getpwuid() to get the "struct passwd *", then change_process_uid()
doesn't need any changes at all AFAICT.
Regards,
Daniel
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