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#!/bin/sh
# Ensure that du does not rely on narrow types like size_t for
# file sizes or sums.
# Copyright (C) 2003, 2005-2007 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
du --version
fi
. $srcdir/../sparse-file
. $srcdir/../test-lib.sh
dd bs=1 seek=8G of=big < /dev/null 2> /dev/null
if test $? != 0; then
echo "$0: cannot create a file large enough for this test; possibly" 1>&2
echo "$0: because file offsets are only 32 bits on this file system" 1>&2
(exit 77); exit 77
fi
# FIXME: this should be a test of dd.
# On some systems (at least linux-2.4.18 + NFS to disks on a Solaris system)
# the `dd' command above mistakenly creates a file of length `0', yet
# doesn't fail. The root of that failure is that the ftruncate call
# returns zero but doesn't do its job. Detect this failure.
set x `ls -gG big`
size=$4
if test "$size" = 0; then
echo "$0: cannot create a file large enough for this test;" 1>&2
echo "$0: possibly because this system's NFS support is buggy;" 1>&2
echo "$0: Consider rerunning this test on a different file system." 1>&2
(exit 77); exit 77
fi
fail=0
# This would print `0 big' with coreutils-4.5.8.
du -ab big > out || fail=1
cat <<\EOF > exp
8589934592 big
EOF
compare out exp || fail=1
(exit $fail); exit $fail
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