| #!/bin/bash |
| |
| # |
| # Copyright (C) 2007 Karel Zak <kzak@redhat.com> |
| # |
| # This file is part of util-linux. |
| # |
| # This file is free software; you can redistribute it and/or modify |
| # it under the terms of the GNU General Public License as published by |
| # the Free Software Foundation; either version 2 of the License or |
| # (at your option) any later version. |
| # |
| # This file is distributed in the hope that it will be useful, |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| # GNU General Public License for more details. |
| # |
| |
| TS_TOPDIR="${0%/*}/../.." |
| TS_DESC="system to hw" |
| NTP_SERVER="0.fedora.pool.ntp.org" |
| |
| . $TS_TOPDIR/functions.sh |
| ts_init "$*" |
| |
| ts_check_test_command "$TS_CMD_HWCLOCK" |
| |
| ts_skip_nonroot |
| ts_check_prog "bc" |
| ts_check_prog "sntp" |
| |
| function get_offset_sys_ntp |
| { |
| local ip="$@" |
| local out |
| |
| # using hostname instead of IP could give us more than one offset |
| out=$(sntp --timeout 1 "$ip") || return 1 |
| |
| # sed must deliver a signed float or empty string for sure |
| out=$(echo "$out" | \ |
| sed -n 's/.* \(\(+\|-\)[0-9]\{1,\}\.[0-9]\{1,\}\).*/\1/1p') |
| |
| [ -n "$out" ] || return 1 |
| echo "$out" |
| } |
| |
| function check_diff_offset |
| { |
| local a=${1#+} |
| local b=${2#+} |
| local max="$3" |
| local tmp |
| |
| tmp=$(echo "$a - $b" | bc | tr -d '-') |
| echo "$tmp" |
| |
| tmp=$(echo "$tmp < $max" | bc) |
| [ $tmp -eq 1 ] |
| } |
| |
| |
| # we need fixed ntp IP to get comparable offsets |
| NTP_IP=$(ts_resolve_host "$NTP_SERVER") \ |
| || ts_skip "can't resolve hostname $NTP_SERVER" |
| |
| OFFSET_A=$(get_offset_sys_ntp "$NTP_IP") \ |
| || ts_skip "can't get ntp offset 1st, $NTP_IP" |
| OFFSET_B=$(get_offset_sys_ntp "$NTP_IP") \ |
| || ts_skip "can't get ntp offset 2nd, $NTP_IP" |
| |
| diff=$(check_diff_offset $OFFSET_A $OFFSET_B 0.02) \ |
| || ts_skip "unreliable ntp or sys clock offsets: $NTP_IP $OFFSET_A $OFFSET_B +/-$diff" |
| |
| # hwclock --show should work if we have a hw clock |
| tmp=$($TS_CMD_HWCLOCK --show 2>&1) |
| if [ $? != "0" ]; then |
| echo "$tmp" | grep -q "Cannot access the Hardware Clock via" \ |
| && ts_skip "no hardware clock found" |
| ts_failed "hwclock --show" |
| fi |
| |
| # call hwclock |
| for i in `seq 1 10`; do |
| # only *skip* on failure for now |
| $TS_CMD_HWCLOCK --systohc || ts_skip "hwclock --systohc failed, $i" |
| $TS_CMD_HWCLOCK --hctosys || ts_skip "hwclock --hctosys failed, $i" |
| done |
| |
| OFFSET_C=$(get_offset_sys_ntp "$NTP_IP") \ |
| || ts_skip "can't get ntp offset 3rd, $NTP_IP" |
| |
| diff=$(check_diff_offset "$OFFSET_B" "$OFFSET_C" 1.0) \ |
| || ts_failed "offsets $NTP_IP: $OFFSET_B $OFFSET_C +/-$diff" |
| |
| ts_ok "offsets $NTP_IP: $OFFSET_B $OFFSET_C +/-$diff" |