xref: /openbmc/qemu/tests/qemu-iotests/126 (revision b097ba37)
1#!/usr/bin/env bash
2#
3# Tests handling of colons in filenames (which may be confused with protocol
4# prefixes)
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=mreitz@redhat.com
24
25seq="$(basename $0)"
26echo "QA output created by $seq"
27
28status=1	# failure is the default!
29
30# get standard environment, filters and checks
31. ./common.rc
32. ./common.filter
33
34# Needs backing file support
35_supported_fmt qcow qcow2 qed vmdk
36# This is the default protocol (and we want to test the difference between
37# colons which separate a protocol prefix from the rest and colons which are
38# just part of the filename, so we cannot test protocols which require a prefix)
39_supported_proto file
40_supported_os Linux
41
42echo
43echo '=== Testing plain files ==='
44echo
45
46# A colon after a slash is not a protocol prefix separator
47TEST_IMG="$TEST_DIR/a:b.$IMGFMT" _make_test_img 64M
48_rm_test_img "$TEST_DIR/a:b.$IMGFMT"
49
50# But if you want to be really sure, you can do this
51TEST_IMG="file:$TEST_DIR/a:b.$IMGFMT" _make_test_img 64M
52_rm_test_img "$TEST_DIR/a:b.$IMGFMT"
53
54
55echo
56echo '=== Testing relative backing filename resolution ==='
57echo
58
59BASE_IMG="$TEST_DIR/image:base.$IMGFMT"
60TOP_IMG="$TEST_DIR/image:top.$IMGFMT"
61
62TEST_IMG=$BASE_IMG _make_test_img 64M
63TEST_IMG=$TOP_IMG _make_test_img -b ./image:base.$IMGFMT
64
65# The default cluster size depends on the image format
66TEST_IMG=$TOP_IMG _img_info | grep -v 'cluster_size'
67
68_rm_test_img "$BASE_IMG"
69_rm_test_img "$TOP_IMG"
70
71
72# Do another test where we access both top and base without any slash in them
73echo
74pushd "$TEST_DIR" >/dev/null
75
76BASE_IMG="base.$IMGFMT"
77TOP_IMG="file:image:top.$IMGFMT"
78
79TEST_IMG=$BASE_IMG _make_test_img 64M
80TEST_IMG=$TOP_IMG _make_test_img -b "$BASE_IMG"
81
82TEST_IMG=$TOP_IMG _img_info | grep -v 'cluster_size'
83
84_rm_test_img "$BASE_IMG"
85_rm_test_img "image:top.$IMGFMT"
86
87popd >/dev/null
88
89# Note that we could also do the same test with BASE_IMG=file:image:base.$IMGFMT
90# -- but behavior for that case is a bit strange. Protocol-prefixed paths are
91# in a sense always absolute paths, so such paths will never be combined with
92# the path of the overlay. But since "image:base.$IMGFMT" is actually a
93# relative path, it will always be evaluated relative to qemu's CWD (but not
94# relative to the overlay!). While this is more or less intended, it is still
95# pretty strange and thus not something that is tested here.
96# (The root of the issue is the use of a relative path with a protocol prefix.
97#  This may always give you weird results because in one sense, qemu considers
98#  such paths absolute, whereas in another, they are still relative.)
99
100
101# success, all done
102echo '*** done'
103rm -f $seq.full
104status=0
105