1#!/bin/bash 2# 3# Test case for VDI header corruption; image too large, and too many blocks 4# 5# Copyright (C) 2013 Red Hat, Inc. 6# 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. 11# 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. 16# 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/>. 19# 20 21# creator 22owner=jcody@redhat.com 23 24seq=`basename $0` 25echo "QA output created by $seq" 26 27here=`pwd` 28tmp=/tmp/$$ 29status=1 # failure is the default! 30 31_cleanup() 32{ 33 _cleanup_test_img 34} 35trap "_cleanup; exit \$status" 0 1 2 3 15 36 37# get standard environment, filters and checks 38. ./common.rc 39. ./common.filter 40 41# This tests vdi-specific header fields 42_supported_fmt vdi 43_supported_proto generic 44_supported_os Linux 45 46ds_offset=368 # disk image size field offset 47bs_offset=376 # block size field offset 48bii_offset=384 # block in image field offset 49 50echo 51echo "=== Testing image size bounds ===" 52echo 53_make_test_img 64M 54 55# check for image size too large 56# poke max image size, and appropriate blocks_in_image value 57echo "Test 1: Maximum size (1024 TB):" 58poke_file "$TEST_IMG" "$ds_offset" "\x00\x00\xf0\xff\xff\xff\x03\x00" 59poke_file "$TEST_IMG" "$bii_offset" "\xff\xff\xff\x3f" 60_img_info 61 62echo 63echo "Test 2: Size too large (1024TB + 1)" 64# This should be too large (-EINVAL): 65poke_file "$TEST_IMG" "$ds_offset" "\x00\x00\xf1\xff\xff\xff\x03\x00" 66_img_info 67 68echo 69echo "Test 3: Size valid (64M), but Blocks In Image too small (63)" 70# This sets the size to 64M, but with a blocks_in_image size that is 71# too small 72poke_file "$TEST_IMG" "$ds_offset" "\x00\x00\x00\x04\x00\x00\x00\x00" 73# For a 64M image, we would need a blocks_in_image value of at least 64, 74# so 63 should be too small and give us -ENOTSUP 75poke_file "$TEST_IMG" "$bii_offset" "\x3f\x00\x00\x00" 76_img_info 77 78echo 79echo "Test 4: Size valid (64M), but Blocks In Image exceeds max allowed" 80# Now check the bounds of blocks_in_image - 0x3fffffff should be the max 81# value here, and we should get -ENOTSUP 82poke_file "$TEST_IMG" "$bii_offset" "\x00\x00\x00\x40" 83_img_info 84 85# Finally, 1MB is the only block size supported. Verify that 86# a value != 1MB results in error, both smaller and larger 87echo 88echo "Test 5: Valid Image: 64MB, Blocks In Image 64, Block Size 1MB" 89poke_file "$TEST_IMG" "$bii_offset" "\x40\x00\x00\x00" # reset bii to valid 90poke_file "$TEST_IMG" "$bs_offset" "\x00\x00\x10\x00" # valid 91_img_info 92echo 93echo "Test 6: Block Size != 1MB; too small test (1MB - 1)" 94poke_file "$TEST_IMG" "$bs_offset" "\xff\xff\x0f\x00" # invalid (too small) 95_img_info 96echo 97echo "Test 7: Block Size != 1MB; too large test (1MB + 64KB)" 98poke_file "$TEST_IMG" "$bs_offset" "\x00\x00\x11\x00" # invalid (too large) 99_img_info 100# success, all done 101echo 102echo "*** done" 103rm -f $seq.full 104status=0 105