Re: hppa nptl switch

[Aurelien Jarno <aurelien@aurel32.net>]

Carlos O'Donell a =E9crit :
> On Tue, Sep 1, 2009 at 2:08 AM, Aurelien Jarno<aurelien@aurel32.net> =
wrote:
>> Frans Pop a =E9crit :
>>> Carlos O'Donell wrote:
>>>>> In practice it shouldn't be problem at all.
>>>>> Debian should make sure that binary/library compiled
>>>>> against NPTL-hppa-glibc will require NPTL-hppa-glibc
>>>>> by proper Depends: line like "libc6 (>=3D 2.10)".
>>>> Does every package have to do this? I'm not very familiar with all=
 the
>>>> packaging requirements.
>>> It is something that should automatically get done correctly as lon=
g as
>>> the libc-dev package defines the minimum version that way.
>>>
>>> The mechanism that determines this is in /var/lib/dpkg/info/libc6.s=
hlibs.
>>> Currently this has lines like:
>>>    libc 6 libc6 (>=3D 2.9)
>>>
>> No, as glibc uses symbols files, this file is actually not used.
>> Nevertheless it is still possible to resolve all symbols to libc6 (>=
=3D 2.10).
>=20
> Once an application is rebuilt against a new libc, what prevents the
> user from downgrading libc and breaking the application?
>=20

If we make sure that the new programs are using symbols from version
GLIBC_2.10, the program should refuse to start with a lower version of
the glibc.

--=20
Aurelien Jarno                          GPG: 1024D/F1BCDB73
aurelien@aurel32.net                 http://www.aurel32.net
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