preinst is in udev 175-0ubuntu9.
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 | #!/bin/sh -e
# This script can be called in the following ways:
#
# Before the package is installed:
# <new-preinst> install
#
# Before removed package is upgraded:
# <new-preinst> install <old-version>
#
# Before the package is upgraded:
# <new-preinst> upgrade <old-version>
#
#
# If postrm fails during upgrade or fails on failed upgrade:
# <old-preinst> abort-upgrade <new-version>
# Disable udevadm from being run during an upgrade
disable_udevadm()
{
# Check for old diverts when --package was still "udev"
if [ -n "$(dpkg-divert --list /sbin/udevadm | grep 'by udev$')" ]; then
rm -f /sbin/udevadm
dpkg-divert --package udev --rename --divert /sbin/udevadm.upgrade \
--remove /sbin/udevadm
fi
dpkg-divert --package fake-udev --rename --divert /sbin/udevadm.upgrade \
--add /sbin/udevadm
cat <<'UDEVADM' > /sbin/udevadm
#!/bin/sh
if [ "${0##*/}" = "udevtrigger" ] || [ "$1" = "trigger" ]; then
echo "udevadm trigger is not permitted while udev is unconfigured." 1>&2
exit 1
fi
if [ "${0##*/}" = "udevsettle" ] || [ "$1" = "settle" ]; then
echo "udevadm settle is not permitted while udev is unconfigured." 1>&2
exit 1
fi
exec /bin/bash -c "exec -a \"\$0\" /sbin/udevadm.upgrade \"\$@\"" "$0" "$@"
UDEVADM
chmod +x /sbin/udevadm
}
case "$1" in
install|upgrade)
disable_udevadm
;;
abort-upgrade)
;;
*)
echo "$0 called with unknown argument \`$1'" 1>&2
exit 1
;;
esac
# Automatically added by dh_installinit
if [ "$1" = install ] || [ "$1" = upgrade ]; then
if [ -e "/etc/init.d/udev" ] && [ ! -L "/etc/init.d/udev" ]; then
if [ "`md5sum \"/etc/init.d/udev\" | sed -e \"s/ .*//\"`" != \
"`dpkg-query -W -f='${Conffiles}' udev | sed -n -e \"\\\\' /etc/init.d/udev '{s/ obsolete$//;s/.* //p}\"`" ]
then
echo "Obsolete conffile /etc/init.d/udev has been modified by you, renaming to .dpkg-bak"
mv -f "/etc/init.d/udev" "/etc/init.d/udev.dpkg-bak"
else
rm -f "/etc/init.d/udev"
fi
fi
fi
# End automatically added section
# Automatically added by dh_installinit
if [ "$1" = install ] || [ "$1" = upgrade ]; then
if [ -e "/etc/init.d/udev-finish" ] && [ ! -L "/etc/init.d/udev-finish" ]; then
if [ "`md5sum \"/etc/init.d/udev-finish\" | sed -e \"s/ .*//\"`" != \
"`dpkg-query -W -f='${Conffiles}' udev | sed -n -e \"\\\\' /etc/init.d/udev-finish '{s/ obsolete$//;s/.* //p}\"`" ]
then
echo "Obsolete conffile /etc/init.d/udev-finish has been modified by you, renaming to .dpkg-bak"
mv -f "/etc/init.d/udev-finish" "/etc/init.d/udev-finish.dpkg-bak"
else
rm -f "/etc/init.d/udev-finish"
fi
fi
fi
# End automatically added section
exit 0
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