preinst is in samba-libs 2:4.3.8+dfsg-0ubuntu1.
This file is a maintainer script. It is executed when installing (*inst) or removing (*rm) the package.
The actual contents of the file can be viewed below.
| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 | #!/bin/sh
#
#
set -e
# Move files to private subdir now fhs patch is finally gone
if [ "$1" = "install" ]
then
	for file in passdb.tdb secrets.tdb schannel_store.tdb idmap2.tdb
	do
		if [ -e /var/lib/samba/$file ]
		then
			if [ -e /var/lib/samba/private/$file ] &&
				[ ! /var/lib/samba/$file -ef /var/lib/samba/private/$file ]
			then
				echo $file exists in /var/lib/samba and /var/lib/samba/private, aborting samba-libs preinst
				echo rename one of them to allow the install/upgrade to continue
				echo http://bugs.debian.org/726472
				ls -al /var/lib/samba /var/lib/samba/private
				exit 1
			fi
		fi
	done
	for file in passdb.tdb secrets.tdb schannel_store.tdb idmap2.tdb
	do
		if [ -e /var/lib/samba/$file ]
		then
			if ! [ -e /var/lib/samba/private/$file ]
			then
				if [ ! -d /var/lib/samba/private ]
				then
					mkdir /var/lib/samba/private
				fi
				mv /var/lib/samba/$file /var/lib/samba/private/$file
				ln /var/lib/samba/private/$file /var/lib/samba/$file
			fi
		fi
	done
	# bug #454770
	# this is only relevant for upgrades from versions before 2:3.6.13-2
	# this bug was never present in a stable release
	if [ -e /etc/samba/idmap2.tdb ] \
		&& ! [ -e /var/lib/samba/private/idmap2.tdb ]
	then
		mv /etc/samba/idmap2.tdb /var/lib/samba/private/idmap2.tdb
	fi
fi
exit 0
 |