4 # Test case for encryption key management versus image sharing
6 # Copyright (C) 2019 Red Hat, Inc.
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.
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.
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/>.
27 test_img = os.path.join(iotests.test_dir, 'test.img')
30 def __init__(self, index):
31 self._id = "keysec" + str(index)
32 # you are not supposed to see the password...
33 self._secret = "hunter" + str(index)
41 def to_cmdline_object(self):
42 return [ "secret,id=" + self._id + ",data=" + self._secret]
44 def to_qmp_object(self):
45 return { "qom-type" : "secret", "id": self.id(),
46 "data": self.secret() }
48 ################################################################################
50 class EncryptionSetupTestCase(iotests.QMPTestCase):
56 self.vm1 = iotests.VM(path_suffix = 'VM1')
57 self.vm2 = iotests.VM(path_suffix = 'VM2')
61 # create the secrets and load 'em into the VMs
62 self.secrets = [ Secret(i) for i in range(0, 4) ]
63 for secret in self.secrets:
64 self.vm1.cmd("object-add", secret.to_qmp_object())
65 self.vm2.cmd("object-add", secret.to_qmp_object())
73 ###########################################################################
74 # create the encrypted block device using qemu-img
75 def createImg(self, file, secret):
79 '--object', *secret.to_cmdline_object(),
81 '-o', 'key-secret=' + secret.id(),
87 # attempts to add a key using qemu-img
88 def addKey(self, file, secret, new_secret):
91 'key-secret' : secret.id(),
92 'driver' : iotests.imgfmt,
99 output = iotests.qemu_img(
101 '--object', *secret.to_cmdline_object(),
102 '--object', *new_secret.to_cmdline_object(),
104 '-o', 'state=active',
105 '-o', 'new-secret=' + new_secret.id(),
106 '-o', 'iter-time=10',
108 "json:" + json.dumps(image_options),
109 check=False # Expected to fail. Log output.
112 iotests.log(output, filters=[iotests.filter_test_dir])
114 ###########################################################################
115 # open an encrypted block device
116 def openImageQmp(self, vm, id, file, secret,
117 readOnly = False, reOpen = False):
119 command = 'blockdev-reopen' if reOpen else 'blockdev-add'
122 'driver': iotests.imgfmt,
124 'read-only': readOnly,
125 'key-secret' : secret.id(),
128 'filename': test_img,
133 vm.cmd(command, options=[opts])
135 vm.cmd(command, opts)
138 ###########################################################################
139 # add virtio-blk consumer for a block device
140 def addImageUser(self, vm, id, disk_id, share_rw=False):
141 result = vm.qmp('device_add', {
142 'driver': 'virtio-blk',
145 'share-rw' : share_rw
151 # close the encrypted block device
152 def closeImageQmp(self, vm, id):
153 vm.cmd('blockdev-del', {'node-name': id})
155 ###########################################################################
157 # add a key to an encrypted block device
158 def addKeyQmp(self, vm, id, new_secret):
165 'driver' : iotests.imgfmt,
166 'new-secret': new_secret.id(),
171 result = vm.qmp('x-blockdev-amend', args)
173 # Run the job only if it was created
174 event = ('JOB_STATUS_CHANGE',
175 {'data': {'id': 'job0', 'status': 'created'}})
176 if vm.events_wait([event], timeout=0.0) is not None:
179 # test that when the image opened by two qemu processes,
180 # neither of them can update the encryption keys
182 self.createImg(test_img, self.secrets[0]);
184 # VM1 opens the image and adds a key
185 self.openImageQmp(self.vm1, "testdev", test_img, self.secrets[0])
186 self.addKeyQmp(self.vm1, "testdev", new_secret = self.secrets[1])
189 # VM2 opens the image
190 self.openImageQmp(self.vm2, "testdev", test_img, self.secrets[0])
193 # neither VMs now should be able to add a key
194 self.addKeyQmp(self.vm1, "testdev", new_secret = self.secrets[2])
195 self.addKeyQmp(self.vm2, "testdev", new_secret = self.secrets[2])
198 # VM 1 closes the image
199 self.closeImageQmp(self.vm1, "testdev")
202 # now VM2 can add the key
203 self.addKeyQmp(self.vm2, "testdev", new_secret = self.secrets[2])
206 # qemu-img should also not be able to add a key
207 self.addKey(test_img, self.secrets[0], self.secrets[2])
210 self.closeImageQmp(self.vm2, "testdev")
214 # test that when the image opened by two qemu processes,
215 # even if first VM opens it read-only, the second can't update encryption
218 self.createImg(test_img, self.secrets[0]);
220 # VM1 opens the image readonly
221 self.openImageQmp(self.vm1, "testdev", test_img, self.secrets[0],
224 # VM2 opens the image
225 self.openImageQmp(self.vm2, "testdev", test_img, self.secrets[0])
227 # VM1 can't add a key since image is readonly
228 self.addKeyQmp(self.vm1, "testdev", new_secret = self.secrets[2])
230 # VM2 can't add a key since VM is has the image opened
231 self.addKeyQmp(self.vm2, "testdev", new_secret = self.secrets[2])
234 #VM1 reopens the image read-write
235 self.openImageQmp(self.vm1, "testdev", test_img, self.secrets[0],
236 reOpen = True, readOnly = False)
238 # VM1 still can't add the key
239 self.addKeyQmp(self.vm1, "testdev", new_secret = self.secrets[2])
242 self.closeImageQmp(self.vm2, "testdev")
244 # VM1 now can add the key
245 self.addKeyQmp(self.vm1, "testdev", new_secret = self.secrets[2])
247 self.closeImageQmp(self.vm1, "testdev")
250 # test that two VMs can't open the same luks image by default
251 # and attach it to a guest device
253 self.createImg(test_img, self.secrets[0]);
255 self.openImageQmp(self.vm1, "testdev", test_img, self.secrets[0])
256 self.addImageUser(self.vm1, "testctrl", "testdev")
258 self.openImageQmp(self.vm2, "testdev", test_img, self.secrets[0])
259 self.addImageUser(self.vm2, "testctrl", "testdev")
262 # test that two VMs can attach the same luks image to a guest device,
263 # if both use share-rw=on
265 self.createImg(test_img, self.secrets[0]);
267 self.openImageQmp(self.vm1, "testdev", test_img, self.secrets[0])
268 self.addImageUser(self.vm1, "testctrl", "testdev", share_rw=True)
270 self.openImageQmp(self.vm2, "testdev", test_img, self.secrets[0])
271 self.addImageUser(self.vm2, "testctrl", "testdev", share_rw=True)
275 if __name__ == '__main__':
276 # support only raw luks since luks encrypted qcow2 is a proper
277 # format driver which doesn't allow any sharing
278 iotests.activate_logging()
279 iotests.main(supported_fmts = ['luks'])