postinst is in openjdk-8-jre-headless 8u77-b03-3ubuntu3.
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 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 | #!/bin/sh
set -e
multiarch=x86_64-linux-gnu
priority=1081
basedir=/usr/lib/jvm/java-8-openjdk-amd64
mandir=$basedir/jre/man
srcext=1.gz
dstext=1.gz
jre_tools='rmid java keytool jjs pack200 rmiregistry unpack200 orbd servertool tnameserv'
case "$1" in
configure)
# fail early. java currently uses tricks to find its own shared
# libraries depending on the path of the binary. Will be changed
# in OpenJDK7
if ! mountpoint -q /proc; then
echo >&2 "the java command requires a mounted proc fs (/proc)."
exit 1
fi
[ -d /etc/.java ] || mkdir -m 755 /etc/.java
[ -d /etc/.java/.systemPrefs ] || mkdir -m 755 /etc/.java/.systemPrefs
if [ ! -f /etc/.java/.systemPrefs/.system.lock ]; then
touch /etc/.java/.systemPrefs/.system.lock
chmod 644 /etc/.java/.systemPrefs/.system.lock
fi
if [ ! -f /etc/.java/.systemPrefs/.systemRootModFile ]; then
touch /etc/.java/.systemPrefs/.systemRootModFile
chmod 644 /etc/.java/.systemPrefs/.systemRootModFile
fi
if [ -z "$2" ]; then
update_alternatives=y
fi
if [ -n "$multiarch" ] && [ -n "$2" ]; then
for i in $jre_tools; do
if [ -z "$(update-alternatives --list $i 2>/dev/null | grep ^$basedir/)" ]; then
update_alternatives=y
break
fi
done
fi
if [ "$update_alternatives" != y ] && [ $priority -gt 1060 ]; then
for i in $jre_tools; do
oldp=$(update-alternatives --query java | awk -v b=$basedir '/^Alternative:/ && $2~b {p=1} /^Priority:/ && p {print $2; exit}')
if [ -n "$oldp" ] && [ "$oldp" -le 1060 ]; then
update_alternatives=y
break
fi
done
fi
if [ "$update_alternatives" = y ]; then
if [ -n "$multiarch" ] && [ "$DPKG_MAINTSCRIPT_ARCH" != $(dpkg --print-architecture) ]; then
priority=$(expr $priority - 1)
fi
for i in $jre_tools; do
unset slave1 slave2 || true
if [ -e $mandir/man1/$i.$srcext ]; then
slave1="--slave \
/usr/share/man/man1/$i.$dstext \
$i.$dstext \
$mandir/man1/$i.$srcext"
fi
# disabled
if false && [ -e $mandir/ja/man1/$i.$srcext ]; then
slave2="--slave \
/usr/share/man/ja/man1/$i.$dstext \
${i}_ja.$dstext \
$mandir/ja/man1/$i.$srcext"
fi
update-alternatives \
--install \
/usr/bin/$i \
$i \
$basedir/jre/bin/$i \
$priority \
$slave1 $slave2
done
update-alternatives \
--install /usr/bin/jexec jexec $basedir/jre/lib/jexec $priority \
--slave \
/usr/share/binfmts/jar \
jexec-binfmt \
$basedir/jre/lib/jar.binfmt
fi # update alternatives
if [ -n "$multiarch" ] && [ -n "$2" ]; then
if true; then
:
elif dpkg --compare-versions "$2" lt 7~b147-2.0~pre3-3ubuntu2~; then
for d in cmm; do
if [ -d $basedir/jre/lib/$d ] && [ ! -h $basedir/jre/lib/$d ]; then
rm -rf $basedir/jre/lib/$d
ln -s ../../../java-6-openjdk-common/jre/lib/$d $basedir/jre/lib/$d
fi
done
fi
fi
# register binfmt; ignore errors, the alternative may already be
# registered by another JRE.
if which update-binfmts >/dev/null && [ -r /usr/share/binfmts/jar ]; then
update-binfmts --package openjdk-8 --import jar || true
fi
# activate class data sharing
case amd64 in i386|sparc)
rm -f $basedir/jre/lib/amd64/client/classes.jsa
log=$(tempfile)
if ! $basedir/bin/java -client -Xshare:dump -XX:PermSize=128m > $log; then
cat >&2 $log
rm -f $log
# this may fail on some machines/configurations, just ignore it.
echo >&2 "ignoring dump failure"
#exit 1
fi
rm -f $log
esac
case amd64 in amd64|i386|sparc)
rm -f $basedir/jre/lib/amd64/server/classes.jsa
log=$(tempfile)
if ! $basedir/bin/java -server -Xshare:dump > $log; then
cat >&2 $log
rm -f $log
# this may fail on some machines/configurations, just ignore it.
echo >&2 "ignoring dump failure"
#exit 1
fi
rm -f $log
esac
if [ -n "$multiarch" ]; then
if [ ! -h /usr/lib/jvm/java-8-openjdk-amd64/jre/lib/zi ] && [ -d /usr/lib/jvm/java-8-openjdk-amd64/jre/lib/zi ]; then
rm -rf /usr/lib/jvm/java-8-openjdk-amd64/jre/lib/zi
ln -s ../../../../../share/javazi /usr/lib/jvm/java-8-openjdk-amd64/jre/lib/zi
fi
fi
;;
esac
exit 0
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