| 1 | #!/usr/bin/env bash |
| 2 | # group: rw quick |
| 3 | # |
| 4 | # Test image locking for POSIX locks |
| 5 | # |
| 6 | # Copyright 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 |
| 23 | owner=fam@euphon.net |
| 24 | |
| 25 | seq="$(basename $0)" |
| 26 | echo "QA output created by $seq" |
| 27 | |
| 28 | tmp=/tmp/$$ |
| 29 | status=1 # failure is the default! |
| 30 | |
| 31 | _cleanup() |
| 32 | { |
| 33 | _cleanup_test_img |
| 34 | _rm_test_img "$TEST_IMG.overlay" |
| 35 | rm -f "$SOCK_DIR/nbd.socket" |
| 36 | } |
| 37 | trap "_cleanup; exit \$status" 0 1 2 3 15 |
| 38 | |
| 39 | # get standard environment, filters and checks |
| 40 | . ./common.rc |
| 41 | . ./common.filter |
| 42 | . ./common.qemu |
| 43 | |
| 44 | _supported_fmt qcow2 |
| 45 | _supported_proto file |
| 46 | _supported_os Linux |
| 47 | |
| 48 | size=32M |
| 49 | |
| 50 | _make_test_img $size |
| 51 | |
| 52 | echo "Starting QEMU" |
| 53 | _launch_qemu -drive file=$TEST_IMG,if=none,id=drive0,file.locking=on \ |
| 54 | -device virtio-blk,drive=drive0 |
| 55 | |
| 56 | echo |
| 57 | echo "Starting a second QEMU using the same image should fail" |
| 58 | echo 'quit' | $QEMU -nographic -monitor stdio \ |
| 59 | -drive file=$TEST_IMG,if=none,id=drive0,file.locking=on \ |
| 60 | -device virtio-blk,drive=drive0 2>&1 | _filter_testdir 2>&1 | |
| 61 | _filter_qemu | |
| 62 | sed -e '/falling back to POSIX file/d' \ |
| 63 | -e '/locks can be lost unexpectedly/d' |
| 64 | |
| 65 | _cleanup_qemu |
| 66 | |
| 67 | echo |
| 68 | echo '=== Testing reopen ===' |
| 69 | echo |
| 70 | |
| 71 | # This tests that reopening does not unshare any permissions it should |
| 72 | # not unshare |
| 73 | # (There was a bug where reopening shared exactly the opposite of the |
| 74 | # permissions it was supposed to share) |
| 75 | |
| 76 | _launch_qemu |
| 77 | |
| 78 | _send_qemu_cmd $QEMU_HANDLE \ |
| 79 | "{'execute': 'qmp_capabilities'}" \ |
| 80 | 'return' |
| 81 | |
| 82 | # Open the image without any format layer (we are not going to access |
| 83 | # it, so that is fine) |
| 84 | # This should keep all permissions shared. |
| 85 | success_or_failure=y _send_qemu_cmd $QEMU_HANDLE \ |
| 86 | "{'execute': 'blockdev-add', |
| 87 | 'arguments': { |
| 88 | 'node-name': 'node0', |
| 89 | 'driver': 'file', |
| 90 | 'filename': '$TEST_IMG', |
| 91 | 'locking': 'on' |
| 92 | } }" \ |
| 93 | 'return' \ |
| 94 | 'error' |
| 95 | |
| 96 | # This snapshot will perform a reopen to drop R/W to RO. |
| 97 | # It should still keep all permissions shared. |
| 98 | success_or_failure=y _send_qemu_cmd $QEMU_HANDLE \ |
| 99 | "{'execute': 'blockdev-snapshot-sync', |
| 100 | 'arguments': { |
| 101 | 'node-name': 'node0', |
| 102 | 'snapshot-file': '$TEST_IMG.overlay', |
| 103 | 'snapshot-node-name': 'node1' |
| 104 | } }" \ |
| 105 | 'return' \ |
| 106 | 'error' |
| 107 | |
| 108 | # Now open the same file again |
| 109 | # This does not require any permissions (and does not unshare any), so |
| 110 | # this will not conflict with node0. |
| 111 | success_or_failure=y _send_qemu_cmd $QEMU_HANDLE \ |
| 112 | "{'execute': 'blockdev-add', |
| 113 | 'arguments': { |
| 114 | 'node-name': 'node1', |
| 115 | 'driver': 'file', |
| 116 | 'filename': '$TEST_IMG', |
| 117 | 'locking': 'on' |
| 118 | } }" \ |
| 119 | 'return' \ |
| 120 | 'error' |
| 121 | |
| 122 | # Start an NBD server to which we can attach node1 |
| 123 | success_or_failure=y _send_qemu_cmd $QEMU_HANDLE \ |
| 124 | "{'execute': 'nbd-server-start', |
| 125 | 'arguments': { |
| 126 | 'addr': { |
| 127 | 'type': 'unix', |
| 128 | 'data': { |
| 129 | 'path': '$SOCK_DIR/nbd.socket' |
| 130 | } } } }" \ |
| 131 | 'return' \ |
| 132 | 'error' |
| 133 | |
| 134 | # Now we attach the image to the NBD server. This server does require |
| 135 | # some permissions (at least WRITE and READ_CONSISTENT), so if |
| 136 | # reopening node0 unshared any (which it should not have), this will |
| 137 | # fail (but it should not). |
| 138 | success_or_failure=y _send_qemu_cmd $QEMU_HANDLE \ |
| 139 | "{'execute': 'nbd-server-add', |
| 140 | 'arguments': { |
| 141 | 'device': 'node1' |
| 142 | } }" \ |
| 143 | 'return' \ |
| 144 | 'error' |
| 145 | |
| 146 | _cleanup_qemu |
| 147 | |
| 148 | echo |
| 149 | echo '=== Testing failure to loosen restrictions ===' |
| 150 | echo |
| 151 | |
| 152 | _launch_qemu -drive file=$TEST_IMG,if=none,file.locking=on |
| 153 | |
| 154 | _send_qemu_cmd $QEMU_HANDLE \ |
| 155 | "{'execute': 'qmp_capabilities'}" \ |
| 156 | 'return' |
| 157 | |
| 158 | _cleanup_test_img |
| 159 | |
| 160 | # When quitting qemu, it will try to drop its locks on the test image. |
| 161 | # Because that file no longer exists, it will be unable to do so. |
| 162 | # However, that is not fatal, so it should just move on. |
| 163 | _send_qemu_cmd $QEMU_HANDLE \ |
| 164 | "{'execute': 'quit'}" \ |
| 165 | 'return' |
| 166 | |
| 167 | wait=1 _cleanup_qemu |
| 168 | |
| 169 | # success, all done |
| 170 | echo "*** done" |
| 171 | rm -f $seq.full |
| 172 | status=0 |