cachepc-qemu

Fork of AMDESE/qemu with changes for cachepc side-channel attack
git clone https://git.sinitax.com/sinitax/cachepc-qemu
Log | Files | Refs | Submodules | LICENSE | sfeed.txt

110 (3623B)

      1#!/usr/bin/env bash
      2# group: rw auto backing quick
      3#
      4# Test case for relative backing file names in complex BDS trees
      5#
      6# Copyright (C) 2014 Red Hat, Inc.
      7#
      8# This program is free software; you can redistribute it and/or modify
      9# it under the terms of the GNU General Public License as published by
     10# the Free Software Foundation; either version 2 of the License, or
     11# (at your option) any later version.
     12#
     13# This program is distributed in the hope that it will be useful,
     14# but WITHOUT ANY WARRANTY; without even the implied warranty of
     15# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     16# GNU General Public License for more details.
     17#
     18# You should have received a copy of the GNU General Public License
     19# along with this program.  If not, see <http://www.gnu.org/licenses/>.
     20#
     21
     22# creator
     23owner=mreitz@redhat.com
     24
     25seq="$(basename $0)"
     26echo "QA output created by $seq"
     27
     28status=1	# failure is the default!
     29
     30_cleanup()
     31{
     32    _cleanup_test_img
     33    _rm_test_img "$TEST_IMG.copy"
     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# Any format supporting backing files
     42_supported_fmt qed qcow qcow2 vmdk
     43_supported_proto file
     44_unsupported_imgopts "subformat=monolithicFlat" "subformat=twoGbMaxExtentFlat" \
     45                     "subformat=twoGbMaxExtentSparse"
     46
     47TEST_IMG_REL=$(basename "$TEST_IMG")
     48
     49echo
     50echo '=== Reconstructable filename ==='
     51echo
     52
     53TEST_IMG="$TEST_IMG.base" _make_test_img 64M
     54_make_test_img -b "$TEST_IMG_REL.base" -F $IMGFMT 64M
     55# qemu should be able to reconstruct the filename, so relative backing names
     56# should work
     57# (We have to filter the backing file format because vmdk always
     58# reports it (as vmdk), whereas other image formats would do so only
     59# with the backing_fmt creation option, which neither vmdk nor qcow
     60# support)
     61TEST_IMG="json:{'driver':'$IMGFMT','file':{'driver':'file','filename':'$TEST_IMG'}}" \
     62    _img_info | _filter_img_info | grep -v 'backing file format'
     63
     64echo
     65echo '=== Non-reconstructable filename ==='
     66echo
     67
     68# Across blkdebug without a config file, you cannot reconstruct filenames, so
     69# qemu is incapable of knowing the directory of the top image from the filename
     70# alone. However, using bdrv_dirname(), it should still work.
     71# (Filter out the json:{} filename so this test works with external data files)
     72TEST_IMG="json:{
     73    'driver': '$IMGFMT',
     74    'file': {
     75        'driver': 'blkdebug',
     76        'image': {
     77            'driver': 'file',
     78            'filename': '$TEST_IMG'
     79        },
     80        'set-state': [
     81            {
     82                'event': 'read_aio',
     83                'new_state': 42
     84            }
     85        ]
     86    }
     87}" _img_info | _filter_img_info | grep -v 'backing file format' \
     88    | _filter_json_filename
     89
     90echo
     91echo '=== Backing name is always relative to the backed image ==='
     92echo
     93
     94# omit the image size; it should work anyway
     95_make_test_img -b "$TEST_IMG_REL.base" -F $IMGFMT
     96
     97echo
     98echo '=== Nodes without a common directory ==='
     99echo
    100
    101cp "$TEST_IMG" "$TEST_IMG.copy"
    102
    103# Should inform us that the actual path of the backing file cannot be determined
    104TEST_IMG="json:{
    105    'driver': '$IMGFMT',
    106    'file': {
    107        'driver': 'quorum',
    108        'vote-threshold': 1,
    109        'children': [
    110            {
    111                'driver': 'file',
    112                'filename': '$TEST_IMG'
    113            },
    114            {
    115                'driver': 'file',
    116                'filename': '$TEST_IMG.copy'
    117            }
    118        ]
    119    }
    120}" _img_info | _filter_img_info | grep -v 'backing file format' \
    121    | _filter_json_filename
    122
    123
    124# success, all done
    125echo '*** done'
    126rm -f $seq.full
    127status=0