d66e5cee00
Like qcow2 since commit 6d33e8e7, error out on invalid lengths instead
of silently truncating them to 1023.
Also don't rely on bdrv_pread() catching integer overflows that make len
negative, but use unsigned variables in the first place.
Cc: qemu-stable@nongnu.org
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
Reviewed-by: Benoit Canet <benoit@irqsave.net>
99 lines
3.2 KiB
Bash
Executable File
99 lines
3.2 KiB
Bash
Executable File
#!/bin/bash
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#
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# qcow1 format input validation tests
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#
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# Copyright (C) 2014 Red Hat, Inc.
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#
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# This program is free software; you can redistribute it and/or modify
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# it under the terms of the GNU General Public License as published by
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# the Free Software Foundation; either version 2 of the License, or
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# (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU General Public License for more details.
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#
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# You should have received a copy of the GNU General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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# creator
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owner=kwolf@redhat.com
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seq=`basename $0`
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echo "QA output created by $seq"
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here=`pwd`
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tmp=/tmp/$$
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status=1 # failure is the default!
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_cleanup()
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{
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rm -f $TEST_IMG.snap
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_cleanup_test_img
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}
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trap "_cleanup; exit \$status" 0 1 2 3 15
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# get standard environment, filters and checks
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. ./common.rc
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. ./common.filter
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_supported_fmt qcow
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_supported_proto generic
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_supported_os Linux
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offset_backing_file_offset=8
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offset_backing_file_size=16
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offset_size=24
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offset_cluster_bits=32
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offset_l2_bits=33
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echo
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echo "== Invalid cluster size =="
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_make_test_img 64M
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poke_file "$TEST_IMG" "$offset_cluster_bits" "\xff"
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{ $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
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poke_file "$TEST_IMG" "$offset_cluster_bits" "\x1f"
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{ $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
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poke_file "$TEST_IMG" "$offset_cluster_bits" "\x08"
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{ $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
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poke_file "$TEST_IMG" "$offset_cluster_bits" "\x11"
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{ $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
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echo
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echo "== Invalid L2 table size =="
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_make_test_img 64M
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poke_file "$TEST_IMG" "$offset_l2_bits" "\xff"
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{ $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
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poke_file "$TEST_IMG" "$offset_l2_bits" "\x05"
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{ $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
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poke_file "$TEST_IMG" "$offset_l2_bits" "\x0e"
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{ $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
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# 1 << 0x1b = 2^31 / L2_CACHE_SIZE
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poke_file "$TEST_IMG" "$offset_l2_bits" "\x1b"
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{ $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
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echo
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echo "== Invalid size =="
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_make_test_img 64M
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poke_file "$TEST_IMG" "$offset_size" "\xee\xee\xee\xee\xee\xee\xee\xee"
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{ $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
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poke_file "$TEST_IMG" "$offset_size" "\x7f\xff\xff\xff\xff\xff\xff\xff"
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{ $QEMU_IO -c "write 0 64M" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
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echo
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echo "== Invalid backing file length =="
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_make_test_img 64M
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poke_file "$TEST_IMG" "$offset_backing_file_offset" "\x00\x00\x00\xff"
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poke_file "$TEST_IMG" "$offset_backing_file_size" "\xff\xff\xff\xff"
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{ $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
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poke_file "$TEST_IMG" "$offset_backing_file_size" "\x7f\xff\xff\xff"
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{ $QEMU_IO -c "read 0 512" $TEST_IMG; } 2>&1 | _filter_qemu_io | _filter_testdir
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# success, all done
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echo "*** done"
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rm -f $seq.full
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status=0
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