Bug 25230

Summary:	include a check in glibc to check for downgrades
Product:	Gentoo Linux	Reporter:	Marius Mauch (RETIRED) <genone>
Component:	[OLD] Core system	Assignee:	Gentoo Toolchain Maintainers <toolchain>
Status:	RESOLVED FIXED
Severity:	critical	CC:	dev-portage, edavison, eradicator, griffon26
Priority:	High
Version:	unspecified
Hardware:	All
OS:	Linux
Whiteboard:
Package list:		Runtime testing required:	---
Bug Depends on:
Bug Blocks:	18603
Attachments:	pkg_setup function to detect downgrades

Description Marius Mauch (RETIRED) gentoo-dev

2003-07-24 23:29:41 UTC

glibc downgrades are considered a very bad thing in most cases but portage
currently allows this without a warning. glibc ebuilds should check if they are
downgraded, print a warning and abort if that is the case. For special cases
this can be overridden with a environment flag.

Comment 1 Marius Mauch (RETIRED) gentoo-dev

2003-07-24 23:31:07 UTC

Created attachment 14986 [details]
pkg_setup function to detect downgrades

This patch is not perfect as it also aborts if only the revision number changes
but should prevent all major downgrades.

Comment 2 Jeff Paetkau 2003-07-25 00:25:18 UTC

This bug has bitten me. IT HURTS!!!! I know I am stupid and all but hey thats 
how ya learn.

Comment 3 Marius Mauch (RETIRED) gentoo-dev

2003-11-17 16:27:46 UTC

It's mostly useful for glibc, not so important for other packages.

Comment 4 Ed Davison 2004-02-28 08:04:49 UTC

I have also just been bitten by this. I went to "upgrade" openssh and it wanted a glibc upgrade as well but it turns out that I must have assumed, without really reading the version numbers, that portage knew what it was doing and really was upgrading glibc. 

Turns out it did not and now am having to build python by hand to get emerge working again so that I can fix the glibc version!

Ouch!!

Definitely think that emerge should check the glibc version and not allow it even this is a feature only limited to glibc.

Comment 5 Seemant Kulleen (RETIRED) gentoo-dev

2004-03-26 10:46:11 UTC

portage people have ideas? maybe a DANGER="downgrade" type syntax in the ebuild or so?

Comment 6 Marius Mauch (RETIRED) gentoo-dev

2004-03-26 11:22:00 UTC

are there any other packages where this would be such important ?

Comment 7 Marius Mauch (RETIRED) gentoo-dev

2004-06-24 17:25:31 UTC

toolchain peeps, could I get at least a bit of feedback ? This is sitting here nearly for a year now. Well, if noone objects I'll add it myself at the end of next week.

Comment 8 Marius Mauch (RETIRED) gentoo-dev

2004-07-04 18:58:35 UTC

done

Comment 9 SpanKY gentoo-dev

2004-12-05 20:53:42 UTC

previous python solution caused a lot of bugs ... think we could do this now with the versionator eclass ?

Comment 10 Jeremy Huddleston (RETIRED) gentoo-dev

2005-03-10 05:09:54 UTC

*** Bug 59704 has been marked as a duplicate of this bug. ***

Comment 11 Jason Stubbs (RETIRED) gentoo-dev

2005-04-02 22:38:22 UTC

Should be fixed by portage-2.0.51.19:

# emerge -C glibc


!!! Trying to unmerge package(s) in system profile. 'sys-libs/glibc'
!!! This could be damaging to your system.

>>> Waiting 10 seconds before starting...
>>> (Control-C to abort)...
Press Ctrl-C to Stop in: 10

Exiting on signal 2