busybox/util-linux/mkfs_ext2_test.sh

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#!/bin/sh
test_mke2fs() {
echo Testing $kilobytes
>image_std
dd seek=$((kilobytes-1)) bs=1K count=1 </dev/zero of=image_std >/dev/null 2>&1 || exit 1
/usr/bin/mke2fs -F image_std $kilobytes >image_std.raw_out 2>&1 || return 1
cat image_std.raw_out \
| grep -v '^mke2fs ' \
| grep -v '^Maximum filesystem' \
| grep -v '^warning: .* blocks unused' \
| grep -v '^Writing inode tables' \
| grep -v '^Writing superblocks and filesystem accounting information' \
| grep -v '^This filesystem will be automatically checked every' \
| grep -v '^180 days, whichever comes first' \
| sed 's/block groups/block group/' \
| sed 's/ *$//' \
| sed 's/blocks (.*%) reserved/blocks reserved/' \
| grep -v '^$' \
>image_std.out
>image_bb
dd seek=$((kilobytes-1)) bs=1K count=1 </dev/zero of=image_bb >/dev/null 2>&1 || exit 1
./busybox mke2fs -F image_bb $kilobytes >image_bb.raw_out 2>&1 || return 1
cat image_bb.raw_out \
| grep -v '^mke2fs ' \
| grep -v '^Maximum filesystem' \
| grep -v '^warning: .* blocks unused' \
| grep -v '^Writing inode tables' \
| grep -v '^Writing superblocks and filesystem accounting information' \
| grep -v '^This filesystem will be automatically checked every' \
| grep -v '^180 days, whichever comes first' \
| sed 's/block groups/block group/' \
| sed 's/ *$//' \
| sed 's/blocks (.*%) reserved/blocks reserved/' \
| grep -v '^$' \
>image_bb.out
diff -ua image_bb.out image_std.out >image.out.diff || {
cat image.out.diff
return 1
}
}
kilobytes=24908 test_mke2fs
kilobytes=81940 test_mke2fs
kilobytes=98392 test_mke2fs
exit
while true; do
kilobytes=$(( (RANDOM*RANDOM) % 100000 + 100))
test_mke2fs || exit 1
done