Kdump with signed images
H. Peter Anvin
hpa at zytor.com
Mon Nov 5 18:01:56 EST 2012
Yes, it is unlikely you can pare thibgs down more than klibc.
Vivek Goyal <vgoyal at redhat.com> wrote:
>On Mon, Nov 05, 2012 at 11:44:48AM -0800, Eric W. Biederman wrote:
>> Vivek Goyal <vgoyal at redhat.com> writes:
>> > On Fri, Nov 02, 2012 at 02:32:48PM -0700, Eric W. Biederman wrote:
>> >> It needs to be checked but /sbin/kexec should not use any
>> >> trigger nss switch. No user or password or host name lookup
>> >> happening.
>> > I also think that we don't call routines which trigger nss switch
>> > be probably can't rely on that as somebody might introduce it in
>> > future. So we need more robust mechanism to prevent it than just
>> > inspection.
>> The fact that we shouldn't use those routines is enough to let us
>> walk down a path where they are not used. Either with a static glibc
>> linked told to use no nss modules (--enable-static-nss ?), or with
>> another more restricted libc.
>Is there anything wrong with using uClibc? Trying to link again
>customized glibc (with --enable-static-nss) sounds just extra work for
>build environments. Are there know restricted libc or we need to create
>one with passing more compile time options to libc.
>Instead of doing more work in an attempt to create restricted libc,
>it might be easier to just link against any already available
Sent from my mobile phone. Please excuse brevity and lack of formatting.
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