postinst is in exim4-base 4.82-3ubuntu2.
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 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 | #!/bin/sh
set -e
. /usr/share/debconf/confmodule
if [ -n "$EX4DEBUG" ]; then
echo "now debugging $0 $@"
set -x
fi
db_version 2.0
BDBVERSION=5.3
case "$1" in
configure)
if ! getent passwd Debian-exim > /dev/null ; then
echo 'Adding system-user for exim (v4)' 1>&2
adduser --system --group --quiet --home /var/spool/exim4 \
--no-create-home --disabled-login --force-badname Debian-exim
fi
# Create directories for log etc
# install also fixes permissions.
install -d -oDebian-exim -gadm -m2750 /var/log/exim4
install -d -oDebian-exim -gDebian-exim -m750 /var/run/exim4
install -d -oDebian-exim -gDebian-exim -m750 /var/spool/exim4
install -d -oDebian-exim -gDebian-exim -m750 /var/spool/exim4/db \
/var/spool/exim4/input /var/spool/exim4/msglog
# fix permissions on upgrades
if dpkg --compare-versions "$2" le "4.30-1" ; then
find /var/log/exim4 /var/spool/exim4 -group mail \
\( -type f -or -type d \) -print0 | \
xargs -0r chgrp Debian-exim
find /var/log/exim4 /var/spool/exim4 -user mail \
\( -type f -or -type d \) -print0 | \
xargs -0r chown Debian-exim
fi
# Paranoia check: On any db upgrade throw away hints
# databases.
if test -r /var/lib/exim4/berkeleydbvers.txt ; then
OLDBDB=`head -n1 /var/lib/exim4/berkeleydbvers.txt`
else
OLDBDB="unknown"
fi
if [ "$BDBVERSION" != "$OLDBDB" ] ; then
echo exim: DB upgrade, deleting hints-db 1>&2
rm -f /var/spool/exim4/db/misc-* /var/spool/exim4/db/wait-* \
/var/spool/exim4/db/callout* \
/var/spool/exim4/db/retry* \
/var/spool/exim4/db/ratelimit* \
/var/spool/exim4/db/__db.retry \
/var/spool/exim4/db/__db.misc* \
/var/spool/exim4/db/__db.callout \
/var/spool/exim4/db/__db.ratelimit \
/var/spool/exim4/db/__db.wait* \
/var/spool/exim4/db/log.*
echo "$BDBVERSION" > /var/lib/exim4/berkeleydbvers.txt
fi
# Check that db files are readable by this Exim's db library
dbfiles=""
for f in /var/spool/exim4/db/misc-* /var/spool/exim4/db/wait-* \
/var/spool/exim4/db/callout* /var/spool/exim4/db/retry* \
/var/spool/exim4/db/ratelimit* ; do
if [ -f "$f" ]; then
if echo $f | grep \.lockfile\$ >/dev/null 2>&1; then
: # ignore lock files
else
dbfiles="$dbfiles $(basename $f)"
fi
fi
done
for dbfile in $dbfiles; do
if exim_dumpdb /var/spool/exim4 $dbfile >/dev/null 2>&1; then
: # File OK
else
echo "Resetting invalid $dbfile hints db" 1>&2
rm -f /var/spool/exim4/db/$dbfile \
/var/spool/exim4/db/$dbfile.* \
/var/spool/exim4/db/__db.${dbfile}.* \
/var/spool/exim4/db/log.*
fi
done
if [ -x "/etc/init.d/exim4" ]; then
update-rc.d exim4 defaults >/dev/null
fi
# honor dpkg-statoverride settings for files not managed with dpkg
for pat in /var/\*/exim4 /var/\*/exim4/\*; do
[ $EX4DEBUG ] && eval echo "evaluate statoverride $pat"
eval dpkg-statoverride --list $pat | while read USER GROUP MODE FILE; do
[ $EX4DEBUG ] && echo "statoverride $USER $GROUP $MODE $FILE"
chown ${USER}:${GROUP} $FILE
chmod $MODE $FILE
done
done
;;
esac
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