3 # qcow2 format input validation tests
5 # Copyright (C) 2013 Red Hat, Inc.
7 # This program is free software; you can redistribute it and/or modify
8 # it under the terms of the GNU General Public License as published by
9 # the Free Software Foundation; either version 2 of the License, or
10 # (at your option) any later version.
12 # This program is distributed in the hope that it will be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 # GNU General Public License for more details.
17 # You should have received a copy of the GNU General Public License
18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
22 owner=kwolf@redhat.com
25 echo "QA output created by $seq"
29 status=1 # failure is the default!
35 trap "_cleanup; exit \$status" 0 1 2 3 15
37 # get standard environment, filters and checks
42 _supported_proto generic
47 offset_backing_file_offset=8
48 offset_refcount_table_offset=48
49 offset_refcount_table_clusters=56
50 offset_nb_snapshots=60
51 offset_snapshots_offset=64
52 offset_header_size=100
53 offset_ext_magic=$header_size
54 offset_ext_size=$((header_size + 4))
57 echo "== Huge header size =="
59 poke_file "$TEST_IMG" "$offset_header_size" "\xff\xff\xff\xff"
60 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
61 poke_file "$TEST_IMG" "$offset_header_size" "\x7f\xff\xff\xff"
62 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
65 echo "== Huge unknown header extension =="
67 poke_file "$TEST_IMG" "$offset_backing_file_offset" "\xff\xff\xff\xff\xff\xff\xff\xff"
68 poke_file "$TEST_IMG" "$offset_ext_magic" "\x12\x34\x56\x78"
69 poke_file "$TEST_IMG" "$offset_ext_size" "\x7f\xff\xff\xff"
70 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
71 poke_file "$TEST_IMG" "$offset_backing_file_offset" "\x00\x00\x00\x00\x00\x00\x00\x00"
72 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
75 echo "== Huge refcount table size =="
77 poke_file "$TEST_IMG" "$offset_refcount_table_clusters" "\xff\xff\xff\xff"
78 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
79 poke_file "$TEST_IMG" "$offset_refcount_table_clusters" "\x00\x02\x00\x01"
80 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
83 echo "== Misaligned refcount table =="
85 poke_file "$TEST_IMG" "$offset_refcount_table_offset" "\x12\x34\x56\x78\x90\xab\xcd\xef"
86 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
89 echo "== Huge refcount offset =="
91 poke_file "$TEST_IMG" "$offset_refcount_table_offset" "\xff\xff\xff\xff\xff\xff\x00\x00"
92 poke_file "$TEST_IMG" "$offset_refcount_table_clusters" "\x00\x00\x00\x7f"
93 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
96 echo "== Invalid snapshot table =="
98 poke_file "$TEST_IMG" "$offset_nb_snapshots" "\xff\xff\xff\xff"
99 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
100 poke_file "$TEST_IMG" "$offset_nb_snapshots" "\x7f\xff\xff\xff"
101 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
103 poke_file "$TEST_IMG" "$offset_snapshots_offset" "\xff\xff\xff\xff\xff\xff\x00\x00"
104 poke_file "$TEST_IMG" "$offset_nb_snapshots" "\x00\x00\xff\xff"
105 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
107 poke_file "$TEST_IMG" "$offset_snapshots_offset" "\x12\x34\x56\x78\x90\xab\xcd\xef"
108 poke_file "$TEST_IMG" "$offset_nb_snapshots" "\x00\x00\x00\x00"
109 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
112 echo "== Hitting snapshot table size limit =="
114 # Put the refcount table in a more or less safe place (16 MB)
115 poke_file "$TEST_IMG" "$offset_snapshots_offset" "\x00\x00\x00\x00\x01\x00\x00\x00"
116 poke_file "$TEST_IMG" "$offset_nb_snapshots" "\x00\x01\x00\x00"
117 { $QEMU_IMG snapshot -c test $TEST_IMG; } 2>&1 | _filter_testdir
118 { $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir