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|
#! /bin/sh
# vim:ts=4:et:sw=4
set -e
S_VERSION="10.3.1-1~"
PACKAGE="sysstat"
DEFAULT="/etc/default/$PACKAGE"
ENABLED="false"
### manage_default_file: manages $DEFAULT file with ucf ###
manage_default_file() {
ENABLED="$1"
if [ "$ENABLED" != "true" ] && [ "$ENABLED" != "false" ] ; then
echo "Internal error in the sysstat's postinst: \$ENABLED=$ENABLED" 1>&2;
exit 1;
fi
# Generate temporary files
def_file=`mktemp -t sstatXXXXXXXXX.def`
# Fill new temporary default file
cat > "$def_file" << EOF
#
# Default settings for /etc/init.d/sysstat, /etc/cron.d/sysstat
# and /etc/cron.daily/sysstat files
#
# Should sadc collect system activity informations? Valid values
# are "true" and "false". Please do not put other values, they
# will be overwritten by debconf!
ENABLED="$ENABLED"
EOF
# Finally, run ucf
ucf --three-way \
--debconf-ok \
"$def_file" "$DEFAULT"
ucfr "$PACKAGE" "$DEFAULT"
[ -e "$DEFAULT" ] && chmod 644 "$DEFAULT"
rm -f "$def_file"
}
manage_systemd_services()
{
ENABLED="$1"
all_services='sysstat-collect.timer sysstat-summary.timer sysstat.service'
num_all_services=3
# deb-systemd-helper does not have the --now option
sysctl='/bin/systemctl'
num_disabled=0
[ -x "$sysctl" ] && [ -d /run/systemd/system ] || return 0
for service in $all_services; do
"$sysctl" --quiet is-enabled "$service" || num_disabled=$(expr $num_disabled + 1)
done
if [ $num_disabled != 0 ] && [ $num_disabled != $num_all_services ]; then
# Do not override local administator choice to enable only some of systemd files
return 0
fi
[ $num_disabled = 0 ] && is_enabled="true" || is_enabled="false"
[ "$ENABLED" != "$is_enabled" ] || return 0
[ "$ENABLED" = "true" ] && enable_arg="enable" || enable_arg="disable"
for service in $all_services; do
case $service in
*.timer) options="--now" ;;
*) options="" ;;
esac
"$sysctl" "$enable_arg" $options "$service" >/dev/null 2>&1 || true
done
}
### Main ###
. /usr/share/debconf/confmodule
ENABLED=""
if [ "$1" = "configure" ] ; then
if dpkg --compare-versions "$2" lt-nl "$S_VERSION"; then
RET=""
db_get sysstat/remove_files || true
if [ "$RET" = "true" ]; then
echo "Removing old statistics from /var/log/sysstat." 1>&2
find /var/log/sysstat -maxdepth 2 \( -name 'sa[0-9][0-9]' -o -name 'sa[0-9][0-9].gz' \
-o -name 'sa[0-9][0-9].bz2' \) -exec rm -f {} \;
fi
fi
# show the question next time
db_reset sysstat/remove_files || true
db_get sysstat/enable || true
ENABLED="$RET"
manage_default_file "$ENABLED"
# must be called *after* manage_default_file, which uses ucf --debconf-ok
db_stop || true
if ! update-alternatives --display sar 2>/dev/null | grep -q '^/usr/bin/sar\.sysstat'; then
update-alternatives --install /usr/bin/sar sar /usr/bin/sar.sysstat 0 \
--slave /usr/share/man/man1/sar.1.gz sar.1.gz \
/usr/share/man/man1/sar.sysstat.1.gz
fi
fi
#DEBHELPER#
if [ "$1" = "configure" ] && [ -n "$ENABLED" ]; then
manage_systemd_services "$ENABLED"
# execute sa1 in a subshell not to clobber the postinst script with potentially
# unsafe values from "$DEFAULT"
if [ "$ENABLED" = "true" ] && [ -x /usr/libexec/sysstat/sa1 ] ; then
( set +e ; /usr/libexec/sysstat/sa1 1 1 )&
fi
fi
exit 0
|
