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#!/bin/sh
# Ensure "df --total" computes well summary statistics
# Copyright (C) 2008 Free Software Foundation, Inc.
# This program 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 3 of the License, or
# (at your option) any later version.
# This program 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.
# You should have received a copy of the GNU General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
if test "$VERBOSE" = yes; then
set -x
ls --version
fi
. $srcdir/test-lib.sh
fail=0
# Don't let a different umask perturb the results.
umask 22
echo '
BEGIN {
total = 0
used = 0
available = 0
}
{
if (NR==1 || $0==$1 || $0~/^total +(-?[0-9]+|-) +(-?[0-9]+|-) +(-?[0-9]+|-) +-?[0-9]+%$/)
next
if ($1~/^[0-9]/)
{
total += $1
used += $2
available += $3
}
else
{
total += $2
used += $3
available += $4
}
}
END {
print total
print used
print available
}
' > compute_sum.awk || fail=1
echo '
/^total +(-?[0-9]+|-) +(-?[0-9]+|-) +(-?[0-9]+|-) +-?[0-9]+%$/ {
print $2;
print $3;
print $4
}
' > parse_total.awk || fail=1
# Use --block-size=512 to keep df from printing rounded-to-kilobyte
# numbers which wouldn't necessarily add up to the displayed total.
df --block-size=512 --total |tee tmp || fail=1
$AWK -f compute_sum.awk tmp > out1 || fail=1
$AWK -f parse_total.awk tmp > out2 || fail=1
compare out1 out2 || fail=1
df -i --block-size=512 --total |tee tmp || fail=1
$AWK -f compute_sum.awk tmp > out1 || fail=1
$AWK -f parse_total.awk tmp > out2 || fail=1
compare out1 out2 || fail=1
(exit $fail); exit $fail
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