From 45fd7df81a04ef0cdc2e67fee6f8047ec2a3c7cd Mon Sep 17 00:00:00 2001
From: Max Reitz <mreitz@redhat.com>
Date: Wed, 3 Apr 2019 17:13:14 +0100
Subject: [PATCH 07/11] iotests: Test file-posix locking and reopen
RH-Author: Max Reitz <mreitz@redhat.com>
Message-id: <20190403171315.20841-8-mreitz@redhat.com>
Patchwork-id: 85405
O-Subject: [RHEL-8.1 qemu-kvm PATCH 7/8] iotests: Test file-posix locking and reopen
Bugzilla: 1694148
RH-Acked-by: John Snow <jsnow@redhat.com>
RH-Acked-by: Stefan Hajnoczi <stefanha@redhat.com>
RH-Acked-by: Stefano Garzarella <sgarzare@redhat.com>
Signed-off-by: Max Reitz <mreitz@redhat.com>
Reviewed-by: Alberto Garcia <berto@igalia.com>
Signed-off-by: Kevin Wolf <kwolf@redhat.com>
(cherry picked from commit 6d0a4a0fb5c8f10c8eb68b52cfda0082b00ae963)
Signed-off-by: Max Reitz <mreitz@redhat.com>
Signed-off-by: Danilo C. L. de Paula <ddepaula@redhat.com>
---
tests/qemu-iotests/182 | 71 ++++++++++++++++++++++++++++++++++++++++++++++
tests/qemu-iotests/182.out | 9 ++++++
2 files changed, 80 insertions(+)
diff --git a/tests/qemu-iotests/182 b/tests/qemu-iotests/182
index 4b31592..3b7689c 100755
--- a/tests/qemu-iotests/182
+++ b/tests/qemu-iotests/182
@@ -31,6 +31,7 @@ status=1 # failure is the default!
_cleanup()
{
_cleanup_test_img
+ rm -f "$TEST_IMG.overlay"
}
trap "_cleanup; exit \$status" 0 1 2 3 15
@@ -71,6 +72,76 @@ echo 'quit' | $QEMU -nographic -monitor stdio \
_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'
+
+# Now we attach the image to a virtio-blk device. This device 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': 'device_add',
+ 'arguments': {
+ 'driver': 'virtio-blk',
+ 'drive': 'node1'
+ } }" \
+ 'return' \
+ 'error'
+
+_cleanup_qemu
+
# success, all done
echo "*** done"
rm -f $seq.full
diff --git a/tests/qemu-iotests/182.out b/tests/qemu-iotests/182.out
index f1463c8..af501ca 100644
--- a/tests/qemu-iotests/182.out
+++ b/tests/qemu-iotests/182.out
@@ -5,4 +5,13 @@ Starting QEMU
Starting a second QEMU using the same image should fail
QEMU_PROG: -drive file=TEST_DIR/t.qcow2,if=none,id=drive0,file.locking=on: Failed to get "write" lock
Is another process using the image [TEST_DIR/t.qcow2]?
+
+=== Testing reopen ===
+
+{"return": {}}
+{"return": {}}
+Formatting 'TEST_DIR/t.qcow2.overlay', fmt=qcow2 size=197120 backing_file=TEST_DIR/t.qcow2 backing_fmt=file cluster_size=65536 lazy_refcounts=off refcount_bits=16
+{"return": {}}
+{"return": {}}
+{"return": {}}
*** done
--
1.8.3.1