xref: /openbmc/qemu/tests/qemu-iotests/195 (revision 0e324626)
1#!/usr/bin/env bash
2# group: rw auto quick
3#
4# Test change-backing-file command
5#
6# Copyright (C) 2017 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=kwolf@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.mid"
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_supported_fmt qcow2
42_supported_proto file fuse
43
44do_run_qemu()
45{
46    echo Testing: "$@"
47    $QEMU -nographic -qmp-pretty stdio -serial none "$@"
48    echo
49}
50
51run_qemu()
52{
53    do_run_qemu "$@" 2>&1 | _filter_testdir | _filter_imgfmt | _filter_qemu \
54                          | _filter_qmp | _filter_qemu_io \
55                          | _filter_generated_node_ids
56}
57
58size=64M
59TEST_IMG="$TEST_IMG.base" _make_test_img $size
60TEST_IMG="$TEST_IMG.mid" _make_test_img -b "$TEST_IMG.base" -F $IMGFMT
61_make_test_img -b "$TEST_IMG.mid" -F $IMGFMT
62
63echo
64echo "Change backing file of mid (opened read-only)"
65echo
66
67run_qemu -drive if=none,file="$TEST_IMG",backing.node-name=mid <<EOF
68{"execute":"qmp_capabilities"}
69{"execute":"change-backing-file", "arguments":{"device":"none0","image-node-name":"mid","backing-file":"/dev/null"}}
70{"execute":"quit"}
71EOF
72
73TEST_IMG="$TEST_IMG.mid" _img_info
74
75echo
76echo "Change backing file of top (opened writable)"
77echo
78
79TEST_IMG="$TEST_IMG.mid" _make_test_img -b "$TEST_IMG.base" -F $IMGFMT
80
81run_qemu -drive if=none,file="$TEST_IMG",node-name=top <<EOF
82{"execute":"qmp_capabilities"}
83{"execute":"change-backing-file", "arguments":{"device":"none0","image-node-name":"top","backing-file":"/dev/null"}}
84{"execute":"quit"}
85EOF
86
87_img_info
88
89# success, all done
90echo "*** done"
91rm -f $seq.full
92status=0
93