mirror of
git://git.sv.gnu.org/coreutils
synced 2026-05-20 23:42:04 -04:00
Jim Meyering
77 lines
2.0 KiB
Bash
Executable File
77 lines
2.0 KiB
Bash
Executable File
#!/bin/sh
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# Ensure that du can handle a 2GB file (i.e., a file of size 2^31 bytes)
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# Before coreutils-5.93, on systems with a signed, 32-bit stat.st_blocks
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# one of du's computations would overflow.
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if test "$VERBOSE" = yes; then
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set -x
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du --version
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fi
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. $srcdir/../envvar-check
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# Creating a 2GB file counts as `very expensive'.
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. $srcdir/../very-expensive
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pwd=`pwd`
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t0=`echo "$0"|sed 's,.*/,,'`.tmp; tmp=$t0/$$
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trap 'status=$?; cd $pwd; chmod -R u+rwx $t0; rm -rf $t0 && exit $status' 0
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trap '(exit $?); exit $?' 1 2 13 15
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framework_failure=0
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mkdir -p $tmp || framework_failure=1
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cd $tmp || framework_failure=1
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if test $framework_failure = 1; then
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echo "$0: failure in testing framework" 1>&2
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(exit 1); exit 1
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fi
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fail=0
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# Get number of free kilobytes on current partition, so we can
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# skip this test if there is insufficient free space.
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# This technique relies on the fact that the `Available' kilobyte
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# count is the number just before the one with a trailing `%'.
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free_kb=`df -kP .|tail -1|sed 's/ [0-9][0-9]*%.*//;s/ *$//;s/.* //'`
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case "$free_kb" in
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[0-9]*) ;;
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*) echo "invalid size from df: $free_kb" 1>&2; (exit 77); exit 77;;
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esac
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# Require about 3GB free.
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min_kb=3000000
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test $min_kb -lt $free_kb ||
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{
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echo "$0: skipping this test:"
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echo "too little free space on current partition: $free_kb (need $min_kb KB)" \
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1>&2;
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(exit 77); exit 77
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}
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big=big
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rm -f $big
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test -t 1 || printf 'creating a 2GB file...\n'
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for i in `seq 100`; do
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# Note: 2147483648 == 2^31. Print floor(2^31/100) per iteration.
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printf %21474836s x >> $big || fail=1
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# On the final iteration, append the remaining 48 bytes.
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test $i = 100 && { printf %48s x >> $big || fail=1; }
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test -t 1 && printf 'creating a 2GB file: %d%% complete\r' $i
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done
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echo
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du -k $big > out1 || fail=1
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rm -f $big
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sed 's/^2[0-9][0-9][0-9][0-9][0-9][0-9] '$big'$/~2M/' out1 > out
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cat <<\EOF > exp || fail=1
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~2M
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EOF
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cmp out exp || fail=1
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test $fail = 1 && diff out exp 2> /dev/null
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(exit $fail); exit $fail
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