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#!/bin/sh
# Disabling features we do not match exactly:
system_mke2fs='/sbin/mke2fs -I 128 -O ^resize_inode'
bbox_mke2fs='./busybox mke2fs'
gen_image() { # params: mke2fs_invocation image_name
>$2
dd seek=$((kilobytes-1)) bs=1K count=1 </dev/zero of=$2 >/dev/null 2>&1 || exit 1
$1 -F $2 $kilobytes >$2.raw_out 2>&1 || return 1
cat $2.raw_out \
| grep -v '^mke2fs [0-9]*\.[0-9]*\.[0-9]* ' \
| grep -v '^Maximum filesystem' \
| grep -v '^Writing inode tables' \
| grep -v '^Writing superblocks and filesystem accounting information' \
| grep -v '^This filesystem will be automatically checked every' \
| grep -v '^180 days, whichever comes first' \
| sed 's/blocks* unused./blocks unused/' \
| sed 's/block groups*/block groups/' \
| sed 's/ *$//' \
| sed 's/blocks (.*%) reserved/blocks reserved/' \
| grep -v '^$' \
>$2.out
}
test_mke2fs() {
echo Testing $kilobytes
gen_image "$system_mke2fs" image_std || return 1
gen_image "$bbox_mke2fs" image_bb || return 1
diff -ua image_bb.out image_std.out >image.out.diff || {
cat image.out.diff
return 1
}
e2fsck -f -n image_bb >image_bb_e2fsck.out 2>&1 || {
echo "e2fsck error on image_bb"
cat image_bb_e2fsck.out
exit 1
}
}
# -:bbox +:standard
# kilobytes=60 is the minimal allowed size
kilobytes=60
while true; do
test_mke2fs || exit 1
: $((kilobytes++))
test $kilobytes = 200 && break
done
# Transition from one block group to two
# fails in [8378..8410] range unless -O ^resize_inode
kilobytes=$((1 * 8*1024 - 50))
while true; do
test_mke2fs || exit 1
: $((kilobytes++))
test $kilobytes = $((1 * 8*1024 + 300)) && break
done
# Transition from 2 block groups to 3
# works
kilobytes=$((2 * 8*1024 - 50))
while true; do
test_mke2fs || exit 1
: $((kilobytes++))
test $kilobytes = $((2 * 8*1024 + 400)) && break
done
# Transition from 3 block groups to 4
# fails in [24825..24922] range unless -O ^resize_inode
kilobytes=$((3 * 8*1024 - 50))
while true; do
test_mke2fs || exit 1
: $((kilobytes++))
test $kilobytes = $((3 * 8*1024 + 500)) && break
done
# Transition from 4 block groups to 5
# works
kilobytes=$((4 * 8*1024 - 50))
while true; do
test_mke2fs || exit 1
: $((kilobytes++))
test $kilobytes = $((4 * 8*1024 + 600)) && break
done
# Transition from 5 block groups to 6
# fails in [41230..41391] range unless -O ^resize_inode
kilobytes=$((5 * 8*1024 - 50))
while true; do
test_mke2fs || exit 1
: $((kilobytes++))
test $kilobytes = $((5 * 8*1024 + 700)) && break
done
exit
# Random sizes
while true; do
kilobytes=$(( (RANDOM*RANDOM) % 5000000 + 60))
test_mke2fs || exit 1
done
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