1*097b500cSMax Reitz#!/bin/bash 2*097b500cSMax Reitz# 3*097b500cSMax Reitz# General test case for qcow2's image check 4*097b500cSMax Reitz# 5*097b500cSMax Reitz# Copyright (C) 2015 Red Hat, Inc. 6*097b500cSMax Reitz# 7*097b500cSMax Reitz# This program is free software; you can redistribute it and/or modify 8*097b500cSMax Reitz# it under the terms of the GNU General Public License as published by 9*097b500cSMax Reitz# the Free Software Foundation; either version 2 of the License, or 10*097b500cSMax Reitz# (at your option) any later version. 11*097b500cSMax Reitz# 12*097b500cSMax Reitz# This program is distributed in the hope that it will be useful, 13*097b500cSMax Reitz# but WITHOUT ANY WARRANTY; without even the implied warranty of 14*097b500cSMax Reitz# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 15*097b500cSMax Reitz# GNU General Public License for more details. 16*097b500cSMax Reitz# 17*097b500cSMax Reitz# You should have received a copy of the GNU General Public License 18*097b500cSMax Reitz# along with this program. If not, see <http://www.gnu.org/licenses/>. 19*097b500cSMax Reitz# 20*097b500cSMax Reitz 21*097b500cSMax Reitz# creator 22*097b500cSMax Reitzowner=mreitz@redhat.com 23*097b500cSMax Reitz 24*097b500cSMax Reitzseq="$(basename $0)" 25*097b500cSMax Reitzecho "QA output created by $seq" 26*097b500cSMax Reitz 27*097b500cSMax Reitzhere="$PWD" 28*097b500cSMax Reitztmp=/tmp/$$ 29*097b500cSMax Reitzstatus=1 # failure is the default! 30*097b500cSMax Reitz 31*097b500cSMax Reitz_cleanup() 32*097b500cSMax Reitz{ 33*097b500cSMax Reitz _cleanup_test_img 34*097b500cSMax Reitz} 35*097b500cSMax Reitztrap "_cleanup; exit \$status" 0 1 2 3 15 36*097b500cSMax Reitz 37*097b500cSMax Reitz# get standard environment, filters and checks 38*097b500cSMax Reitz. ./common.rc 39*097b500cSMax Reitz. ./common.filter 40*097b500cSMax Reitz 41*097b500cSMax Reitz# This tests qocw2-specific low-level functionality 42*097b500cSMax Reitz_supported_fmt qcow2 43*097b500cSMax Reitz_supported_proto file 44*097b500cSMax Reitz_supported_os Linux 45*097b500cSMax Reitz 46*097b500cSMax Reitzecho 47*097b500cSMax Reitzecho '=== Check on an image with a multiple of 2^32 clusters ===' 48*097b500cSMax Reitzecho 49*097b500cSMax Reitz 50*097b500cSMax ReitzIMGOPTS=$(_optstr_add "$IMGOPTS" "cluster_size=512") \ 51*097b500cSMax Reitz _make_test_img 512 52*097b500cSMax Reitz 53*097b500cSMax Reitz# Allocate L2 table 54*097b500cSMax Reitz$QEMU_IO -c 'write 0 512' "$TEST_IMG" | _filter_qemu_io 55*097b500cSMax Reitz 56*097b500cSMax Reitz# Put the data cluster at a multiple of 2 TB, resulting in the image apparently 57*097b500cSMax Reitz# having a multiple of 2^32 clusters 58*097b500cSMax Reitz# (To be more specific: It is at 32 PB) 59*097b500cSMax Reitzpoke_file "$TEST_IMG" 2048 "\x80\x80\x00\x00\x00\x00\x00\x00" 60*097b500cSMax Reitz 61*097b500cSMax Reitz# An offset of 32 PB results in qemu-img check having to allocate an in-memory 62*097b500cSMax Reitz# refcount table of 128 TB (16 bit refcounts, 512 byte clusters). 63*097b500cSMax Reitz# This should be generally too much for any system and thus fail. 64*097b500cSMax Reitz# What this test is checking is that the qcow2 driver actually tries to allocate 65*097b500cSMax Reitz# such a large amount of memory (and is consequently aborting) instead of having 66*097b500cSMax Reitz# truncated the cluster count somewhere (which would result in much less memory 67*097b500cSMax Reitz# being allocated and then a segfault occurring). 68*097b500cSMax Reitz_check_test_img 69*097b500cSMax Reitz 70*097b500cSMax Reitz# success, all done 71*097b500cSMax Reitzecho "*** done" 72*097b500cSMax Reitzrm -f $seq.full 73*097b500cSMax Reitzstatus=0 74