On Tue, Aug 03, 1999 at 10:56:22AM +0200, Kristoffer.Rose@ens-lyon.fr wrote:
> I proposed:
>
> >> 1. REQUIRE that /usr/doc is a symlink to the FHS directory /usr/share/doc.
>
> Joseph Carter replied:
>
> > Breaks dpkg. Propose it all you want, but it's not going to happen if you
> > don't provide the patch for dpkg to follow symlinks. Either that or all
> > packages must be upgraded and Pre-depends: base-files (>= someversion).
>
> <sarcasm reason="this was a rather abrupt dismissal"> Interesting. I have
> been using symlinks at the directory level in this way for some years now,
> with dpkg, and nothing is broken yet. Can you explain how dpkg breaks
> since I didn't notice? </sarcasm>
All right dammit, here we go... built a package crap 1.0-1, here is the
listing:
/.
/usr
/usr/bin
/usr/sbin
/usr/lib
/usr/lib/crap
/usr/lib/crap/olddir
/usr/lib/crap/olddir/file
/usr/doc
/usr/doc/crap
/usr/doc/crap/changelog.Debian.gz
Now from /usr/lib/crap:
drwxr-xr-x 2 root root 1024 Aug 3 02:15 olddir/
-rwxr-xr-x 1 root root 633 Aug 3 02:14 olddir/file*
And then after I symlink it:
drwxr-xr-x 2 root root 1024 Aug 3 02:15 newdir/
-rwxr-xr-x 1 root root 633 Aug 3 02:14 newdir/file*
lrwxrwxrwx 1 root root 7 Aug 3 02:19 olddir -> newdir//
Install crap 1.0-2 ...
/.
/usr
/usr/bin
/usr/sbin
/usr/lib
/usr/lib/crap
/usr/lib/crap/newdir
/usr/lib/crap/newdir/file
/usr/doc
/usr/doc/crap
/usr/doc/crap/changelog.Debian.gz
root@icarus2:/usr/lib/crap# ls -lR
.:
total 1
drwxr-xr-x 2 root root 1024 Aug 3 02:21 newdir/
newdir:
total 0
Do you believe us yet? What more proof do you possibly need?
> (Note that I am explicitly avoiding actually installing or deinstalling an
> actual symlink which dpkg thinks is a directory ... with my proposal this
> can, in fact, happen, but only if users deinstall all packages that refer
> to the /usr/doc directory which is rather unlikely.)
Does not matter. dpkg breaks. It has been now demonstrated and proven.
> > Your script also has a cow if /usr/doc isn't -> share/doc, which is bad
> > because it may be necessary to use some symlink magic at some point. Not
> > that it isn't a moot point unless you fix dpkg first.
>
> This was intentional ... and in fact the script will merely warn you if
> this is the case. I was merely trying to KISS since this is a rather
> critical script.
>
> More reactions welcome !
It exits with 1, that's an error condition.
--
Joseph Carter <knghtbrd@debian.org> Debian GNU/Linux developer
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<lux> if macOS is for the computer illiterate, then windoze is for the
computer masochists
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