libvirt/tests/virsystemdtest.c
Martin Kletzander c3bd0019c0 systemd: Modernize machine naming
So, systemd-machined has this philosophy that machine names are like
hostnames and hence should follow the same rules.  But we always allowed
international characters in domain names.  Thus we need to modify the
machine name we are passing to systemd.

In order to change some machine names that we will be passing to systemd,
we also need to call TerminateMachine at the end of a lifetime of a
domain.  Even for domains that were started with older libvirt.  That
can be achieved thanks to virSystemdGetMachineNameByPID().  And because
we can change machine names, we can get rid of the inconsistent and
pointless escaping of domain names when creating machine names.

So this patch modifies the naming in the following way.  It creates the
name as <drivername>-<id>-<name> where invalid hostname characters are
stripped out of the name and if the resulting name is longer, it
truncates it to 64 characters.  That way we can start domains we
couldn't start before.  Well, at least on systemd.

To make it work all together, the machineName (which is needed only with
systemd) is saved in domain's private data.  That way the generation is
moved to the driver and we don't need to pass various unnecessary
arguments to cgroup functions.

The only thing this complicates a bit is the scope generation when
validating a cgroup where we must check both old and new naming, so a
slight modification was needed there.

Resolves: https://bugzilla.redhat.com/show_bug.cgi?id=1282846

Signed-off-by: Martin Kletzander <mkletzan@redhat.com>
2016-02-05 16:11:50 +01:00

613 lines
19 KiB
C

/*
* Copyright (C) 2013, 2014 Red Hat, Inc.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library. If not, see
* <http://www.gnu.org/licenses/>.
*
* Author: Daniel P. Berrange <berrange@redhat.com>
*/
#include <config.h>
#include "testutils.h"
#if defined(WITH_DBUS) && defined(__linux__)
# include <stdlib.h>
# include <dbus/dbus.h>
# include "virsystemd.h"
# include "virlog.h"
# include "virmock.h"
# define VIR_FROM_THIS VIR_FROM_NONE
VIR_LOG_INIT("tests.systemdtest");
VIR_MOCK_WRAP_RET_ARGS(dbus_connection_send_with_reply_and_block,
DBusMessage *,
DBusConnection *, connection,
DBusMessage *, message,
int, timeout_milliseconds,
DBusError *, error)
{
DBusMessage *reply = NULL;
const char *service = dbus_message_get_destination(message);
const char *member = dbus_message_get_member(message);
VIR_MOCK_REAL_INIT(dbus_connection_send_with_reply_and_block);
if (STREQ(service, "org.freedesktop.machine1")) {
if (getenv("FAIL_BAD_SERVICE")) {
dbus_set_error_const(error,
"org.freedesktop.systemd.badthing",
"Something went wrong creating the machine");
} else {
reply = dbus_message_new(DBUS_MESSAGE_TYPE_METHOD_RETURN);
if (STREQ(member, "GetMachineByPID")) {
const char *object_path = "/org/freedesktop/machine1/machine/qemu_2ddemo";
DBusMessageIter iter;
dbus_message_iter_init_append(reply, &iter);
if (!dbus_message_iter_append_basic(&iter,
DBUS_TYPE_OBJECT_PATH,
&object_path))
goto error;
} else if (STREQ(member, "Get")) {
const char *name = "qemu-demo";
DBusMessageIter iter;
DBusMessageIter sub;
dbus_message_iter_init_append(reply, &iter);
dbus_message_iter_open_container(&iter, DBUS_TYPE_VARIANT,
"s", &sub);
if (!dbus_message_iter_append_basic(&sub,
DBUS_TYPE_STRING,
&name))
goto error;
dbus_message_iter_close_container(&iter, &sub);
}
}
} else if (STREQ(service, "org.freedesktop.login1")) {
char *supported = getenv("RESULT_SUPPORT");
DBusMessageIter iter;
reply = dbus_message_new(DBUS_MESSAGE_TYPE_METHOD_RETURN);
dbus_message_iter_init_append(reply, &iter);
if (!dbus_message_iter_append_basic(&iter,
DBUS_TYPE_STRING,
&supported))
goto error;
} else if (STREQ(service, "org.freedesktop.DBus") &&
STREQ(member, "ListActivatableNames")) {
const char *svc1 = "org.foo.bar.wizz";
const char *svc2 = "org.freedesktop.machine1";
const char *svc3 = "org.freedesktop.login1";
DBusMessageIter iter;
DBusMessageIter sub;
reply = dbus_message_new(DBUS_MESSAGE_TYPE_METHOD_RETURN);
dbus_message_iter_init_append(reply, &iter);
dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY,
"s", &sub);
if (!dbus_message_iter_append_basic(&sub,
DBUS_TYPE_STRING,
&svc1))
goto error;
if (!getenv("FAIL_NO_SERVICE") &&
!dbus_message_iter_append_basic(&sub,
DBUS_TYPE_STRING,
&svc2))
goto error;
if (!getenv("FAIL_NO_SERVICE") &&
!dbus_message_iter_append_basic(&sub,
DBUS_TYPE_STRING,
&svc3))
goto error;
dbus_message_iter_close_container(&iter, &sub);
} else if (STREQ(service, "org.freedesktop.DBus") &&
STREQ(member, "ListNames")) {
const char *svc1 = "org.foo.bar.wizz";
const char *svc2 = "org.freedesktop.systemd1";
const char *svc3 = "org.freedesktop.login1";
DBusMessageIter iter;
DBusMessageIter sub;
reply = dbus_message_new(DBUS_MESSAGE_TYPE_METHOD_RETURN);
dbus_message_iter_init_append(reply, &iter);
dbus_message_iter_open_container(&iter, DBUS_TYPE_ARRAY,
"s", &sub);
if (!dbus_message_iter_append_basic(&sub,
DBUS_TYPE_STRING,
&svc1))
goto error;
if ((!getenv("FAIL_NO_SERVICE") && !getenv("FAIL_NOT_REGISTERED")) &&
!dbus_message_iter_append_basic(&sub,
DBUS_TYPE_STRING,
&svc2))
goto error;
if ((!getenv("FAIL_NO_SERVICE") && !getenv("FAIL_NOT_REGISTERED")) &&
!dbus_message_iter_append_basic(&sub,
DBUS_TYPE_STRING,
&svc3))
goto error;
dbus_message_iter_close_container(&iter, &sub);
} else {
reply = dbus_message_new(DBUS_MESSAGE_TYPE_METHOD_RETURN);
}
return reply;
error:
dbus_message_unref(reply);
return NULL;
}
static int testCreateContainer(const void *opaque ATTRIBUTE_UNUSED)
{
unsigned char uuid[VIR_UUID_BUFLEN] = {
1, 1, 1, 1,
2, 2, 2, 2,
3, 3, 3, 3,
4, 4, 4, 4
};
if (virSystemdCreateMachine("demo",
"lxc",
uuid,
"/proc/123/root",
123,
true,
0, NULL,
"highpriority.slice") < 0) {
fprintf(stderr, "%s", "Failed to create LXC machine\n");
return -1;
}
return 0;
}
static int testTerminateContainer(const void *opaque ATTRIBUTE_UNUSED)
{
if (virSystemdTerminateMachine("lxc-demo") < 0) {
fprintf(stderr, "%s", "Failed to terminate LXC machine\n");
return -1;
}
return 0;
}
static int testCreateMachine(const void *opaque ATTRIBUTE_UNUSED)
{
unsigned char uuid[VIR_UUID_BUFLEN] = {
1, 1, 1, 1,
2, 2, 2, 2,
3, 3, 3, 3,
4, 4, 4, 4
};
if (virSystemdCreateMachine("demo",
"qemu",
uuid,
NULL,
123,
false,
0, NULL,
NULL) < 0) {
fprintf(stderr, "%s", "Failed to create KVM machine\n");
return -1;
}
return 0;
}
static int testTerminateMachine(const void *opaque ATTRIBUTE_UNUSED)
{
if (virSystemdTerminateMachine("test-qemu-demo") < 0) {
fprintf(stderr, "%s", "Failed to terminate KVM machine\n");
return -1;
}
return 0;
}
static int testCreateNoSystemd(const void *opaque ATTRIBUTE_UNUSED)
{
unsigned char uuid[VIR_UUID_BUFLEN] = {
1, 1, 1, 1,
2, 2, 2, 2,
3, 3, 3, 3,
4, 4, 4, 4
};
int rv;
setenv("FAIL_NO_SERVICE", "1", 1);
if ((rv = virSystemdCreateMachine("demo",
"qemu",
uuid,
NULL,
123,
false,
0, NULL,
NULL)) == 0) {
unsetenv("FAIL_NO_SERVICE");
fprintf(stderr, "%s", "Unexpected create machine success\n");
return -1;
}
unsetenv("FAIL_NO_SERVICE");
if (rv != -2) {
fprintf(stderr, "%s", "Unexpected create machine error\n");
return -1;
}
return 0;
}
static int testCreateSystemdNotRunning(const void *opaque ATTRIBUTE_UNUSED)
{
unsigned char uuid[VIR_UUID_BUFLEN] = {
1, 1, 1, 1,
2, 2, 2, 2,
3, 3, 3, 3,
4, 4, 4, 4
};
int rv;
setenv("FAIL_NOT_REGISTERED", "1", 1);
if ((rv = virSystemdCreateMachine("demo",
"qemu",
uuid,
NULL,
123,
false,
0, NULL,
NULL)) == 0) {
unsetenv("FAIL_NOT_REGISTERED");
fprintf(stderr, "%s", "Unexpected create machine success\n");
return -1;
}
unsetenv("FAIL_NOT_REGISTERED");
if (rv != -2) {
fprintf(stderr, "%s", "Unexpected create machine error\n");
return -1;
}
return 0;
}
static int testCreateBadSystemd(const void *opaque ATTRIBUTE_UNUSED)
{
unsigned char uuid[VIR_UUID_BUFLEN] = {
1, 1, 1, 1,
2, 2, 2, 2,
3, 3, 3, 3,
4, 4, 4, 4
};
int rv;
setenv("FAIL_BAD_SERVICE", "1", 1);
if ((rv = virSystemdCreateMachine("demo",
"qemu",
uuid,
NULL,
123,
false,
0, NULL,
NULL)) == 0) {
unsetenv("FAIL_BAD_SERVICE");
fprintf(stderr, "%s", "Unexpected create machine success\n");
return -1;
}
unsetenv("FAIL_BAD_SERVICE");
if (rv != -1) {
fprintf(stderr, "%s", "Unexpected create machine error\n");
return -1;
}
return 0;
}
static int testCreateNetwork(const void *opaque ATTRIBUTE_UNUSED)
{
unsigned char uuid[VIR_UUID_BUFLEN] = {
1, 1, 1, 1,
2, 2, 2, 2,
3, 3, 3, 3,
4, 4, 4, 4
};
int nicindexes[] = {
2, 1729, 87539319,
};
size_t nnicindexes = ARRAY_CARDINALITY(nicindexes);
if (virSystemdCreateMachine("demo",
"lxc",
uuid,
"/proc/123/root",
123,
true,
nnicindexes, nicindexes,
"highpriority.slice") < 0) {
fprintf(stderr, "%s", "Failed to create LXC machine\n");
return -1;
}
return 0;
}
static int
testGetMachineName(const void *opaque ATTRIBUTE_UNUSED)
{
char *tmp = virSystemdGetMachineNameByPID(1234);
int ret = -1;
if (!tmp) {
fprintf(stderr, "%s", "Failed to create LXC machine\n");
return ret;
}
if (STREQ(tmp, "qemu-demo"))
ret = 0;
VIR_FREE(tmp);
return ret;
}
struct testNameData {
const char *name;
const char *expected;
int id;
bool legacy;
};
static int
testScopeName(const void *opaque)
{
const struct testNameData *data = opaque;
int ret = -1;
char *actual = NULL;
if (!(actual = virSystemdMakeScopeName(data->name, "lxc", data->legacy)))
goto cleanup;
if (STRNEQ(actual, data->expected)) {
fprintf(stderr, "Expected '%s' but got '%s'\n",
data->expected, actual);
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(actual);
return ret;
}
static int
testMachineName(const void *opaque)
{
const struct testNameData *data = opaque;
int ret = -1;
char *actual = NULL;
if (!(actual = virSystemdMakeMachineName("qemu", data->id,
data->name, true)))
goto cleanup;
if (STRNEQ(actual, data->expected)) {
fprintf(stderr, "Expected '%s' but got '%s'\n",
data->expected, actual);
goto cleanup;
}
ret = 0;
cleanup:
VIR_FREE(actual);
return ret;
}
typedef int (*virSystemdCanHelper)(bool * result);
struct testPMSupportData {
virSystemdCanHelper tested;
};
static int testPMSupportHelper(const void *opaque)
{
int rv;
bool result;
size_t i;
const char *results[4] = {"yes", "no", "na", "challenge"};
int expected[4] = {1, 0, 0, 1};
const struct testPMSupportData *data = opaque;
for (i = 0; i < 4; i++) {
setenv("RESULT_SUPPORT", results[i], 1);
if ((rv = data->tested(&result)) < 0) {
fprintf(stderr, "%s", "Unexpected canSuspend error\n");
return -1;
}
if (result != expected[i]) {
fprintf(stderr, "Unexpected result for answer '%s'\n", results[i]);
goto error;
}
unsetenv("RESULT_SUPPORT");
}
return 0;
error:
unsetenv("RESULT_SUPPORT");
return -1;
}
static int testPMSupportHelperNoSystemd(const void *opaque)
{
int rv;
bool result;
const struct testPMSupportData *data = opaque;
setenv("FAIL_NO_SERVICE", "1", 1);
if ((rv = data->tested(&result)) == 0) {
unsetenv("FAIL_NO_SERVICE");
fprintf(stderr, "%s", "Unexpected canSuspend success\n");
return -1;
}
unsetenv("FAIL_NO_SERVICE");
if (rv != -2) {
fprintf(stderr, "%s", "Unexpected canSuspend error\n");
return -1;
}
return 0;
}
static int testPMSupportSystemdNotRunning(const void *opaque)
{
int rv;
bool result;
const struct testPMSupportData *data = opaque;
setenv("FAIL_NOT_REGISTERED", "1", 1);
if ((rv = data->tested(&result)) == 0) {
unsetenv("FAIL_NOT_REGISTERED");
fprintf(stderr, "%s", "Unexpected canSuspend success\n");
return -1;
}
unsetenv("FAIL_NOT_REGISTERED");
if (rv != -2) {
fprintf(stderr, "%s", "Unexpected canSuspend error\n");
return -1;
}
return 0;
}
static int
mymain(void)
{
int ret = 0;
unsigned char uuid[VIR_UUID_BUFLEN];
/* The one we use in tests quite often */
if (virUUIDParse("c7a5fdbd-edaf-9455-926a-d65c16db1809", uuid) < 0)
return EXIT_FAILURE;
if (virtTestRun("Test create container ", testCreateContainer, NULL) < 0)
ret = -1;
if (virtTestRun("Test terminate container ", testTerminateContainer, NULL) < 0)
ret = -1;
if (virtTestRun("Test create machine ", testCreateMachine, NULL) < 0)
ret = -1;
if (virtTestRun("Test terminate machine ", testTerminateMachine, NULL) < 0)
ret = -1;
if (virtTestRun("Test create no systemd ", testCreateNoSystemd, NULL) < 0)
ret = -1;
if (virtTestRun("Test create systemd not running ",
testCreateSystemdNotRunning, NULL) < 0)
ret = -1;
if (virtTestRun("Test create bad systemd ", testCreateBadSystemd, NULL) < 0)
ret = -1;
if (virtTestRun("Test create with network ", testCreateNetwork, NULL) < 0)
ret = -1;
if (virtTestRun("Test getting machine name ", testGetMachineName, NULL) < 0)
ret = -1;
# define TEST_SCOPE(_name, unitname, _legacy) \
do { \
struct testNameData data = { \
.name = _name, .expected = unitname, .legacy = _legacy, \
}; \
if (virtTestRun("Test scopename", testScopeName, &data) < 0) \
ret = -1; \
} while (0)
# define TEST_SCOPE_OLD(name, unitname) \
TEST_SCOPE(name, unitname, true)
# define TEST_SCOPE_NEW(name, unitname) \
TEST_SCOPE(name, unitname, false)
TEST_SCOPE_OLD("demo", "machine-lxc\\x2ddemo.scope");
TEST_SCOPE_OLD("demo-name", "machine-lxc\\x2ddemo\\x2dname.scope");
TEST_SCOPE_OLD("demo!name", "machine-lxc\\x2ddemo\\x21name.scope");
TEST_SCOPE_OLD(".demo", "machine-lxc\\x2d\\x2edemo.scope");
TEST_SCOPE_OLD("bull💩", "machine-lxc\\x2dbull\\xf0\\x9f\\x92\\xa9.scope");
TEST_SCOPE_NEW("qemu-3-demo", "machine-qemu\\x2d3\\x2ddemo.scope");
# define TEST_MACHINE(_name, _id, machinename) \
do { \
struct testNameData data = { \
.name = _name, .expected = machinename, .id = _id, \
}; \
if (virtTestRun("Test scopename", testMachineName, &data) < 0) \
ret = -1; \
} while (0)
TEST_MACHINE("demo", 1, "qemu-1-demo");
TEST_MACHINE("demo-name", 2, "qemu-2-demo-name");
TEST_MACHINE("demo!name", 3, "qemu-3-demoname");
TEST_MACHINE(".demo", 4, "qemu-4-.demo");
TEST_MACHINE("bull\U0001f4a9", 5, "qemu-5-bull");
TEST_MACHINE("demo..name", 6, "qemu-6-demo.name");
TEST_MACHINE("12345678901234567890123456789012345678901234567890123456789", 7,
"qemu-7-123456789012345678901234567890123456789012345678901234567");
TEST_MACHINE("123456789012345678901234567890123456789012345678901234567890", 8,
"qemu-8-123456789012345678901234567890123456789012345678901234567");
# define TESTS_PM_SUPPORT_HELPER(name, function) \
do { \
struct testPMSupportData data = { \
function \
}; \
if (virtTestRun("Test " name " ", testPMSupportHelper, &data) < 0) \
ret = -1; \
if (virtTestRun("Test " name " no systemd ", \
testPMSupportHelperNoSystemd, &data) < 0) \
ret = -1; \
if (virtTestRun("Test systemd " name " not running ", \
testPMSupportSystemdNotRunning, &data) < 0) \
ret = -1; \
} while (0)
TESTS_PM_SUPPORT_HELPER("canSuspend", &virSystemdCanSuspend);
TESTS_PM_SUPPORT_HELPER("canHibernate", &virSystemdCanHibernate);
TESTS_PM_SUPPORT_HELPER("canHybridSleep", &virSystemdCanHybridSleep);
return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
}
VIRT_TEST_MAIN_PRELOAD(mymain, abs_builddir "/.libs/virmockdbus.so")
#else /* ! (WITH_DBUS && __linux__) */
int
main(void)
{
return EXIT_AM_SKIP;
}
#endif /* ! WITH_DBUS */