Gentoo Archives: gentoo-dev

From: Jason Stubbs <jstubbs@g.o>
To: gentoo-dev@l.g.o
Subject: Re: [gentoo-dev] Re: pkg_{pre,post}inst misusage
Date: Fri, 23 Dec 2005 19:10:04
Message-Id: 200512240406.05350.jstubbs@gentoo.org
In Reply to: [gentoo-dev] Re: pkg_{pre,post}inst misusage by Duncan <1i5t5.duncan@cox.net>
1 On Saturday 24 December 2005 03:43, Duncan wrote:
2 > Jason Stubbs posted <200512240222.06574.jstubbs@g.o>, excerpted
3 >
4 > below, on Sat, 24 Dec 2005 02:22:06 +0900:
5 > > A quick patch makes symlinks handled similarly to regular files and
6 > > solves the issue. I'll put it into testing unless anybody can come up
7 > > with a reason not to. The case that will be broken by the patch is when
8 > > two different packages install the same symlink. PackageA is
9 > > installed, PackageB is installed, PackageB is uninstalled -> PackageA is
10 > > broken. Does this case exist?
11 >
12 > Yikes! That's not going to remove /lib or /usr/lib or the like, for us on
13 > amd64, where that's a symlink to lib64, will it?
14 >
15 > equery b /lib
16 > [ Searching for file(s) /lib in *... ]
17 > net-analyzer/macchanger-1.5.0-r1 (/lib)
18 > sys-apps/baselayout-1.12.0_pre12 (/lib)
19 > sys-boot/grub-0.97 (/lib)
20 > sys-devel/gcc-4.0.2-r1 (/lib)
21 > sys-devel/gcc-3.4.4-r1 (/lib)
22 > sys-fs/device-mapper-1.01.05 (/lib)
23 > sys-fs/lvm2-2.01.14 (/lib)
24 > sys-fs/udev-078 (/lib)
25 > sys-libs/glibc-2.3.6 (/lib)
26 >
27 > There's a similar, longer list, for /usr/lib. Obviously, not all of
28 > those will own it as a symlink, but it is one, and if removing one happens
29 > to remove the symlink...
30
31 I'm not familiar with equery so I don't know what this output means. By the
32 look of it, it is only a list of packages that own stuff in that directory.
33
34 > Also consider the effect where a former dir is now a symlink or a former
35 > symlink is now a dir. The recent xorg directory moves come to mind.
36
37 With the patch I've done, recorded symlinks will continue to be ignored if the
38 target is not a symlink.
39
40 > You are /sure/ the new code won't screw anything of that sort up, right?
41 > Maybe that's the reason nobody seems to have been around to know about.
42 > It just sounds like it /could/ be dangerous to me. For some reason, I
43 > don't like the idea of something that could hose a system that badly! =8^\
44
45 *Please* don't tell me you run ~arch.
46
47 --
48 Jason Stubbs
49 --
50 gentoo-dev@g.o mailing list

Replies

Subject Author
[gentoo-dev] Re: Re: pkg_{pre,post}inst misusage Duncan <1i5t5.duncan@×××.net>