1 | #!/bin/sh
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2 |
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3 | # Disabling features we do not match exactly:
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4 | system_mke2fs='/sbin/mke2fs -O ^resize_inode'
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5 | bbox_mke2fs='./busybox mke2fs'
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6 |
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7 | gen_image() { # params: mke2fs_invocation image_name
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8 | >$2
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9 | dd seek=$((kilobytes-1)) bs=1K count=1 </dev/zero of=$2 >/dev/null 2>&1 || exit 1
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10 | $1 -F $2 $kilobytes >$2.raw_out 2>&1 || return 1
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11 | cat $2.raw_out \
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12 | | grep -v '^mke2fs [0-9]*\.[0-9]*\.[0-9]* ' \
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13 | | grep -v '^Maximum filesystem' \
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14 | | grep -v '^Writing inode tables' \
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15 | | grep -v '^Writing superblocks and filesystem accounting information' \
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16 | | grep -v '^This filesystem will be automatically checked every' \
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17 | | grep -v '^180 days, whichever comes first' \
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18 | | sed 's/blocks* unused./blocks unused/' \
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19 | | sed 's/block groups*/block groups/' \
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20 | | sed 's/ *$//' \
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21 | | sed 's/blocks (.*%) reserved/blocks reserved/' \
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22 | | grep -v '^$' \
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23 | >$2.out
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24 | }
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25 |
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26 | test_mke2fs() {
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27 | echo Testing $kilobytes
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28 |
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29 | gen_image "$system_mke2fs" image_std || return 1
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30 | gen_image "$bbox_mke2fs" image_bb || return 1
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31 |
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32 | diff -ua image_bb.out image_std.out >image.out.diff || {
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33 | cat image.out.diff
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34 | return 1
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35 | }
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36 |
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37 | e2fsck -f -n image_bb >image_bb_e2fsck.out 2>&1 || {
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38 | echo "e2fsck error on image_bb"
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39 | cat image_bb_e2fsck.out
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40 | exit 1
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41 | }
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42 | }
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43 |
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44 | # -:bbox +:standard
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45 |
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46 | # kilobytes=60 is the minimal allowed size
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47 | kilobytes=60
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48 | while true; do
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49 | test_mke2fs || exit 1
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50 | : $((kilobytes++))
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51 | test $kilobytes = 200 && break
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52 | done
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53 |
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54 | # Transition from one block group to two
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55 | # fails in [8378..8410] range unless -O ^resize_inode
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56 | kilobytes=$((1 * 8*1024 - 50))
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57 | while true; do
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58 | test_mke2fs || exit 1
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59 | : $((kilobytes++))
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60 | test $kilobytes = $((1 * 8*1024 + 300)) && break
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61 | done
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62 |
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63 | # Transition from 2 block groups to 3
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64 | # works
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65 | kilobytes=$((2 * 8*1024 - 50))
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66 | while true; do
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67 | test_mke2fs || exit 1
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68 | : $((kilobytes++))
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69 | test $kilobytes = $((2 * 8*1024 + 400)) && break
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70 | done
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71 |
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72 | # Transition from 3 block groups to 4
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73 | # fails in [24825..24922] range unless -O ^resize_inode
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74 | kilobytes=$((3 * 8*1024 - 50))
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75 | while true; do
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76 | test_mke2fs || exit 1
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77 | : $((kilobytes++))
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78 | test $kilobytes = $((3 * 8*1024 + 500)) && break
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79 | done
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80 |
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81 | # Transition from 4 block groups to 5
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82 | # works
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83 | kilobytes=$((4 * 8*1024 - 50))
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84 | while true; do
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85 | test_mke2fs || exit 1
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86 | : $((kilobytes++))
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87 | test $kilobytes = $((4 * 8*1024 + 600)) && break
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88 | done
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89 |
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90 | # Transition from 5 block groups to 6
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91 | # fails in [41230..41391] range unless -O ^resize_inode
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92 | kilobytes=$((5 * 8*1024 - 50))
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93 | while true; do
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94 | test_mke2fs || exit 1
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95 | : $((kilobytes++))
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96 | test $kilobytes = $((5 * 8*1024 + 700)) && break
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97 | done
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98 | exit
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99 |
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100 | # Random sizes
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101 | while true; do
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102 | kilobytes=$(( (RANDOM*RANDOM) % 5000000 + 60))
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103 | test_mke2fs || exit 1
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104 | done
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