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110 lines
2.6 KiB
Bash
Executable File
110 lines
2.6 KiB
Bash
Executable File
#!/bin/sh
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system_mke2fs='/sbin/mke2fs'
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bbox_mke2fs='./busybox mke2fs'
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gen_image() { # params: mke2fs_invocation image_name
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>$2
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dd seek=$((kilobytes-1)) bs=1K count=1 </dev/zero of=$2 >/dev/null 2>&1 || exit 1
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$1 -F $2 $kilobytes >$2.raw_out 2>&1 || return 1
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#off | sed 's/inodes, [0-9]* blocks/inodes, N blocks/' \
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cat $2.raw_out \
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| grep -v '^mke2fs [0-9]*\.[0-9]*\.[0-9]* ' \
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| grep -v '^Maximum filesystem' \
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| grep -v '^Writing inode tables' \
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| grep -v '^Writing superblocks and filesystem accounting information' \
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| grep -v '^This filesystem will be automatically checked every' \
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| grep -v '^180 days, whichever comes first' \
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| sed 's/blocks* unused./blocks unused/' \
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| sed 's/block groups*/block groups/' \
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| sed 's/ *$//' \
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| sed 's/blocks (.*%) reserved/blocks reserved/' \
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| grep -v '^$' \
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>$2.out
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}
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test_mke2fs() {
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echo Testing $kilobytes
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gen_image "$system_mke2fs" image_std || return 1
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gen_image "$bbox_mke2fs" image_bb || return 1
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diff -ua image_bb.out image_std.out >image.out.diff || {
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cat image.out.diff
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return 1
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}
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e2fsck -f -n image_bb >image_bb_e2fsck.out 2>&1 || {
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echo "e2fsck error on image_bb"
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cat image_bb_e2fsck.out
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exit 1
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}
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}
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# -:bbox +:standard
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# kilobytes=60 is the minimal allowed size
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kilobytes=60
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while true; do
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test_mke2fs || exit 1
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: $((kilobytes++))
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test $kilobytes = 200 && break
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done
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# Transition from one block group to two
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# fails in [8378..8410] range
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kilobytes=$((8*1024 - 20))
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while true; do
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test_mke2fs #|| exit 1
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: $((kilobytes++))
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test $kilobytes = $((8*1024 + 300)) && break
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done
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# Transition from two block groups to three
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# works
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kilobytes=$((16*1024 - 40))
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while true; do
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test_mke2fs || exit 1
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: $((kilobytes++))
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test $kilobytes = $((16*1024 + 500)) && break
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done
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exit
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# Specific sizes with known differences:
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# -6240 inodes, 24908 blocks
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# +6240 inodes, 24577 blocks
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# -4 block group
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# +3 block group
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# -1560 inodes per group
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# +2080 inodes per group
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kilobytes=24908 test_mke2fs
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# -304 inodes, N blocks
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# +152 inodes, N blocks
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# -304 inodes per group
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# +152 inodes per group
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kilobytes=1218 test_mke2fs
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# -14464 inodes, N blocks
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# +14448 inodes, N blocks
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# -8 block group
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# +7 block group
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# -1808 inodes per group
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# +2064 inodes per group
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kilobytes=57696 test_mke2fs
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# -warning: 239 blocks unused.
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# +warning: 242 blocks unused.
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kilobytes=49395 test_mke2fs
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## This size results in "warning: 75 blocks unused"
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#kilobytes=98380 test_mke2fs
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while true; do
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kilobytes=$(( (RANDOM*RANDOM) % 1000000 + 60))
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test_mke2fs || exit 1
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done
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