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#!/bin/sh
# Ensure that du does not rely on narrow types like size_t for
# file sizes or sums.
if test "$VERBOSE" = yes; then
set -x
du --version
fi
. $srcdir/../envvar-check
pwd=`pwd`
t0=`echo "$0"|sed 's,.*/,,'`.tmp; tmp=$t0/$$
trap 'status=$?; cd $pwd; chmod -R u+rwx $t0; rm -rf $t0 && exit $status' 0
trap '(exit $?); exit $?' 1 2 13 15
framework_failure=0
mkdir -p $tmp || framework_failure=1
cd $tmp || framework_failure=1
if test $framework_failure = 1; then
echo "$0: failure in testing framework" 1>&2
(exit 1); exit 1
fi
# If this file system doesn't support sparse files,
# don't try to create a file that'd end up consuming 8GB.
# This happens on Darwin6.5 with a file system of type `hfs'.
# NTFS requires 128K before a hole appears in a sparse file.
dd bs=1 seek=128K of=t < /dev/null 2> /dev/null
set x `du -sk t`
if test "$2" -ge 128; then
echo "$0: skipping this test, since this file system doesn't support" 1>&2
echo "$0: sparse files and this test requires a file with an apparent" 1>&2
echo "$0: size of 8GB" 1>&2
(exit 77); exit 77
fi
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
cmp out exp || fail=1
test $fail = 1 && diff out exp 2> /dev/null
(exit $fail); exit $fail
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