| #!/usr/bin/env bash |
| # group: rw quick |
| # |
| # Test image locking for POSIX locks |
| # |
| # Copyright 2017 Red Hat, Inc. |
| # |
| # This program is free software; you can redistribute it and/or modify |
| # it under the terms of the GNU General Public License as published by |
| # the Free Software Foundation; either version 2 of the License, or |
| # (at your option) any later version. |
| # |
| # This program is distributed in the hope that it will be useful, |
| # but WITHOUT ANY WARRANTY; without even the implied warranty of |
| # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| # GNU General Public License for more details. |
| # |
| # You should have received a copy of the GNU General Public License |
| # along with this program. If not, see <http://www.gnu.org/licenses/>. |
| # |
| |
| # creator |
| owner=famz@redhat.com |
| |
| seq="$(basename $0)" |
| echo "QA output created by $seq" |
| |
| tmp=/tmp/$$ |
| status=1 # failure is the default! |
| |
| _cleanup() |
| { |
| _cleanup_test_img |
| _rm_test_img "$TEST_IMG.overlay" |
| rm -f "$SOCK_DIR/nbd.socket" |
| } |
| trap "_cleanup; exit \$status" 0 1 2 3 15 |
| |
| # get standard environment, filters and checks |
| . ./common.rc |
| . ./common.filter |
| . ./common.qemu |
| |
| _supported_fmt qcow2 |
| _supported_proto file |
| |
| size=32M |
| |
| _make_test_img $size |
| |
| echo "Starting QEMU" |
| _launch_qemu -drive file=$TEST_IMG,if=none,id=drive0,file.locking=on \ |
| -device virtio-blk,drive=drive0 |
| |
| echo |
| echo "Starting a second QEMU using the same image should fail" |
| echo 'quit' | $QEMU -nographic -monitor stdio \ |
| -drive file=$TEST_IMG,if=none,id=drive0,file.locking=on \ |
| -device virtio-blk,drive=drive0 2>&1 | _filter_testdir 2>&1 | |
| _filter_qemu | |
| sed -e '/falling back to POSIX file/d' \ |
| -e '/locks can be lost unexpectedly/d' |
| |
| _cleanup_qemu |
| |
| echo |
| echo '=== Testing reopen ===' |
| echo |
| |
| # This tests that reopening does not unshare any permissions it should |
| # not unshare |
| # (There was a bug where reopening shared exactly the opposite of the |
| # permissions it was supposed to share) |
| |
| _launch_qemu |
| |
| _send_qemu_cmd $QEMU_HANDLE \ |
| "{'execute': 'qmp_capabilities'}" \ |
| 'return' |
| |
| # Open the image without any format layer (we are not going to access |
| # it, so that is fine) |
| # This should keep all permissions shared. |
| success_or_failure=y _send_qemu_cmd $QEMU_HANDLE \ |
| "{'execute': 'blockdev-add', |
| 'arguments': { |
| 'node-name': 'node0', |
| 'driver': 'file', |
| 'filename': '$TEST_IMG', |
| 'locking': 'on' |
| } }" \ |
| 'return' \ |
| 'error' |
| |
| # This snapshot will perform a reopen to drop R/W to RO. |
| # It should still keep all permissions shared. |
| success_or_failure=y _send_qemu_cmd $QEMU_HANDLE \ |
| "{'execute': 'blockdev-snapshot-sync', |
| 'arguments': { |
| 'node-name': 'node0', |
| 'snapshot-file': '$TEST_IMG.overlay', |
| 'snapshot-node-name': 'node1' |
| } }" \ |
| 'return' \ |
| 'error' |
| |
| # Now open the same file again |
| # This does not require any permissions (and does not unshare any), so |
| # this will not conflict with node0. |
| success_or_failure=y _send_qemu_cmd $QEMU_HANDLE \ |
| "{'execute': 'blockdev-add', |
| 'arguments': { |
| 'node-name': 'node1', |
| 'driver': 'file', |
| 'filename': '$TEST_IMG', |
| 'locking': 'on' |
| } }" \ |
| 'return' \ |
| 'error' |
| |
| # Start an NBD server to which we can attach node1 |
| success_or_failure=y _send_qemu_cmd $QEMU_HANDLE \ |
| "{'execute': 'nbd-server-start', |
| 'arguments': { |
| 'addr': { |
| 'type': 'unix', |
| 'data': { |
| 'path': '$SOCK_DIR/nbd.socket' |
| } } } }" \ |
| 'return' \ |
| 'error' |
| |
| # Now we attach the image to the NBD server. This server does require |
| # some permissions (at least WRITE and READ_CONSISTENT), so if |
| # reopening node0 unshared any (which it should not have), this will |
| # fail (but it should not). |
| success_or_failure=y _send_qemu_cmd $QEMU_HANDLE \ |
| "{'execute': 'nbd-server-add', |
| 'arguments': { |
| 'device': 'node1' |
| } }" \ |
| 'return' \ |
| 'error' |
| |
| _cleanup_qemu |
| |
| echo |
| echo '=== Testing failure to loosen restrictions ===' |
| echo |
| |
| _launch_qemu -drive file=$TEST_IMG,if=none,file.locking=on |
| |
| _send_qemu_cmd $QEMU_HANDLE \ |
| "{'execute': 'qmp_capabilities'}" \ |
| 'return' |
| |
| _cleanup_test_img |
| |
| # When quitting qemu, it will try to drop its locks on the test image. |
| # Because that file no longer exists, it will be unable to do so. |
| # However, that is not fatal, so it should just move on. |
| _send_qemu_cmd $QEMU_HANDLE \ |
| "{'execute': 'quit'}" \ |
| 'return' |
| |
| wait=1 _cleanup_qemu |
| |
| # success, all done |
| echo "*** done" |
| rm -f $seq.full |
| status=0 |