1 files changed, 171 insertions, 0 deletions
diff --git a/tests/qemu-iotests/182 b/tests/qemu-iotests/182
new file mode 100755
index 000000000..fcd1d796e
--- /dev/null
+++ b/tests/qemu-iotests/182
@@ -0,0 +1,171 @@
+#!/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