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src/util/virsystemd: convert to use GLib DBus 

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
Reviewed-by: Michal Privoznik <mprivozn@redhat.com>
This commit is contained in:
Pavel Hrdina 2020-09-09 16:42:42 +02:00
parent 10cf523a8d
commit bf5f2ed09c
3 changed files with 254 additions and 292 deletions
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297
src/util/virsystemd.c
View File

@ -26,7 +26,7 @@
#include "virsystemd.h"
#include "virbuffer.h"
#include "virdbus.h"
#include "virgdbus.h"
#include "virstring.h"
#include "viralloc.h"
#include "virutil.h"
@ -157,13 +157,13 @@ virSystemdHasMachined(void)
if (val != -1)
return val;
if ((ret = virDBusIsServiceEnabled("org.freedesktop.machine1")) < 0) {
if ((ret = virGDBusIsServiceEnabled("org.freedesktop.machine1")) < 0) {
if (ret == -2)
g_atomic_int_set(&virSystemdHasMachinedCachedValue, -2);
return ret;
}
if ((ret = virDBusIsServiceRegistered("org.freedesktop.systemd1")) == -1)
if ((ret = virGDBusIsServiceRegistered("org.freedesktop.systemd1")) == -1)
return ret;
g_atomic_int_set(&virSystemdHasMachinedCachedValue, ret);
return ret;
@ -179,14 +179,14 @@ virSystemdHasLogind(void)
if (val != -1)
return val;
ret = virDBusIsServiceEnabled("org.freedesktop.login1");
ret = virGDBusIsServiceEnabled("org.freedesktop.login1");
if (ret < 0) {
if (ret == -2)
g_atomic_int_set(&virSystemdHasLogindCachedValue, -2);
return ret;
}
if ((ret = virDBusIsServiceRegistered("org.freedesktop.login1")) == -1)
if ((ret = virGDBusIsServiceRegistered("org.freedesktop.login1")) == -1)
return ret;
g_atomic_int_set(&virSystemdHasLogindCachedValue, ret);
@ -197,53 +197,59 @@ virSystemdHasLogind(void)
char *
virSystemdGetMachineNameByPID(pid_t pid)
{
DBusConnection *conn;
DBusMessage *reply = NULL;
char *name = NULL, *object = NULL;
GDBusConnection *conn;
g_autoptr(GVariant) message = NULL;
g_autoptr(GVariant) reply = NULL;
g_autoptr(GVariant) gvar = NULL;
g_autofree char *object = NULL;
char *name = NULL;
if (virSystemdHasMachined() < 0)
goto cleanup;
return NULL;
if (!(conn = virDBusGetSystemBus()))
goto cleanup;
if (!(conn = virGDBusGetSystemBus()))
return NULL;
if (virDBusCallMethod(conn, &reply, NULL,
message = g_variant_new("(u)", pid);
if (virGDBusCallMethod(conn,
&reply,
NULL,
"org.freedesktop.machine1",
"/org/freedesktop/machine1",
"org.freedesktop.machine1.Manager",
"GetMachineByPID",
"u", pid) < 0)
goto cleanup;
message) < 0)
return NULL;
if (virDBusMessageDecode(reply, "o", &object) < 0)
goto cleanup;
g_variant_get(reply, "(o)", &object);
virDBusMessageUnref(reply);
g_variant_unref(reply);
reply = NULL;
VIR_DEBUG("Domain with pid %lld has object path '%s'",
(long long) pid, object);
if (virDBusCallMethod(conn, &reply, NULL,
g_variant_unref(message);
message = g_variant_new("(ss)",
"org.freedesktop.machine1.Machine", "Name");
if (virGDBusCallMethod(conn,
&reply,
NULL,
"org.freedesktop.machine1",
object,
"org.freedesktop.DBus.Properties",
"Get",
"ss",
"org.freedesktop.machine1.Machine",
"Name") < 0)
goto cleanup;
message) < 0)
return NULL;
if (virDBusMessageDecode(reply, "v", "s", &name) < 0)
goto cleanup;
g_variant_get(reply, "(v)", &gvar);
g_variant_get(gvar, "s", &name);
VIR_DEBUG("Domain with pid %lld has machine name '%s'",
(long long) pid, name);
cleanup:
VIR_FREE(object);
virDBusMessageUnref(reply);
return name;
}
@ -274,26 +280,28 @@ int virSystemdCreateMachine(const char *name,
const char *partition,
unsigned int maxthreads)
{
int ret;
DBusConnection *conn;
char *creatorname = NULL;
char *slicename = NULL;
char *scopename = NULL;
int rc;
GDBusConnection *conn;
GVariant *guuid;
GVariant *gnicindexes;
GVariant *gprops;
GVariant *message;
g_autofree char *creatorname = NULL;
g_autofree char *slicename = NULL;
g_autofree char *scopename = NULL;
static int hasCreateWithNetwork = 1;
if ((ret = virSystemdHasMachined()) < 0)
return ret;
if ((rc = virSystemdHasMachined()) < 0)
return rc;
if (!(conn = virDBusGetSystemBus()))
if (!(conn = virGDBusGetSystemBus()))
return -1;
ret = -1;
creatorname = g_strdup_printf("libvirt-%s", drivername);
if (partition) {
if (!(slicename = virSystemdMakeSliceName(partition)))
goto cleanup;
return -1;
} else {
slicename = g_strdup("");
}
@ -352,122 +360,138 @@ int virSystemdCreateMachine(const char *name,
VIR_DEBUG("Attempting to create machine via systemd");
if (g_atomic_int_get(&hasCreateWithNetwork)) {
virError error;
memset(&error, 0, sizeof(error));
g_autoptr(virError) error = NULL;
if (virDBusCallMethod(conn,
NULL,
&error,
"org.freedesktop.machine1",
"/org/freedesktop/machine1",
"org.freedesktop.machine1.Manager",
"CreateMachineWithNetwork",
"sayssusa&ia(sv)",
if (VIR_ALLOC(error) < 0)
return -1;
guuid = g_variant_new_fixed_array(G_VARIANT_TYPE("y"),
uuid, 16, sizeof(unsigned char));
gnicindexes = g_variant_new_fixed_array(G_VARIANT_TYPE("i"),
nicindexes, nnicindexes, sizeof(int));
gprops = g_variant_new_parsed("[('Slice', <%s>),"
" ('After', <['libvirtd.service']>),"
" ('Before', <['virt-guest-shutdown.target']>)]",
slicename);
message = g_variant_new("(s@ayssus@ai@a(sv))",
name,
16,
uuid[0], uuid[1], uuid[2], uuid[3],
uuid[4], uuid[5], uuid[6], uuid[7],
uuid[8], uuid[9], uuid[10], uuid[11],
uuid[12], uuid[13], uuid[14], uuid[15],
guuid,
creatorname,
iscontainer ? "container" : "vm",
(unsigned int)pidleader,
NULLSTR_EMPTY(rootdir),
nnicindexes, nicindexes,
3,
"Slice", "s", slicename,
"After", "as", 1, "libvirtd.service",
"Before", "as", 1, "virt-guest-shutdown.target") < 0)
goto cleanup;
gnicindexes,
gprops);
if (error.level == VIR_ERR_ERROR) {
if (virDBusErrorIsUnknownMethod(&error)) {
rc = virGDBusCallMethod(conn,
NULL,
error,
"org.freedesktop.machine1",
"/org/freedesktop/machine1",
"org.freedesktop.machine1.Manager",
"CreateMachineWithNetwork",
message);
g_variant_unref(message);
if (rc < 0)
return -1;
if (error->level == VIR_ERR_ERROR) {
if (virGDBusErrorIsUnknownMethod(error)) {
VIR_INFO("CreateMachineWithNetwork isn't supported, switching "
"to legacy CreateMachine method for systemd-machined");
virResetError(&error);
virResetError(error);
g_atomic_int_set(&hasCreateWithNetwork, 0);
/* Could re-structure without Using goto, but this
* avoids another atomic read which would trigger
* another memory barrier */
goto fallback;
}
virReportErrorObject(&error);
virResetError(&error);
goto cleanup;
virReportErrorObject(error);
virResetError(error);
return -1;
}
} else {
fallback:
if (virDBusCallMethod(conn,
guuid = g_variant_new_fixed_array(G_VARIANT_TYPE("y"),
uuid, 16, sizeof(unsigned char));
gprops = g_variant_new_parsed("[('Slice', <%s>),"
" ('After', <['libvirtd.service']>),"
" ('Before', <['virt-guest-shutdown.target']>)]",
slicename);
message = g_variant_new("(s@ayssus@a(sv))",
name,
guuid,
creatorname,
iscontainer ? "container" : "vm",
(unsigned int)pidleader,
NULLSTR_EMPTY(rootdir),
gprops);
rc = virGDBusCallMethod(conn,
NULL,
NULL,
"org.freedesktop.machine1",
"/org/freedesktop/machine1",
"org.freedesktop.machine1.Manager",
"CreateMachine",
"sayssusa(sv)",
name,
16,
uuid[0], uuid[1], uuid[2], uuid[3],
uuid[4], uuid[5], uuid[6], uuid[7],
uuid[8], uuid[9], uuid[10], uuid[11],
uuid[12], uuid[13], uuid[14], uuid[15],
creatorname,
iscontainer ? "container" : "vm",
(unsigned int)pidleader,
NULLSTR_EMPTY(rootdir),
3,
"Slice", "s", slicename,
"After", "as", 1, "libvirtd.service",
"Before", "as", 1, "virt-guest-shutdown.target") < 0)
goto cleanup;
message);
g_variant_unref(message);
if (rc < 0)
return -1;
}
if (maxthreads > 0) {
if (!(scopename = virSystemdMakeScopeName(name, drivername, false)))
goto cleanup;
return -1;
if (virDBusCallMethod(conn,
gprops = g_variant_new_parsed("[('TasksMax', <%llu>)]",
(uint64_t)maxthreads);
message = g_variant_new("(sb@a(sv))",
scopename,
true,
gprops);
rc = virGDBusCallMethod(conn,
NULL,
NULL,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"SetUnitProperties",
"sba(sv)",
scopename,
true,
1,
"TasksMax", "t", (uint64_t)maxthreads) < 0)
goto cleanup;
message);
g_variant_unref(message);
if (rc < 0)
return -1;
}
ret = 0;
cleanup:
VIR_FREE(creatorname);
VIR_FREE(slicename);
VIR_FREE(scopename);
return ret;
return 0;
}
int virSystemdTerminateMachine(const char *name)
{
int ret;
DBusConnection *conn;
virError error;
int rc;
GDBusConnection *conn;
g_autoptr(GVariant) message = NULL;
g_autoptr(virError) error = NULL;
if (!name)
return 0;
memset(&error, 0, sizeof(error));
if ((rc = virSystemdHasMachined()) < 0)
return rc;
if ((ret = virSystemdHasMachined()) < 0)
goto cleanup;
if (!(conn = virGDBusGetSystemBus()))
return -1;
ret = -1;
if (!(conn = virDBusGetSystemBus()))
goto cleanup;
if (VIR_ALLOC(error) < 0)
return -1;
/*
* The systemd DBus API we're invoking has the
@ -479,31 +503,27 @@ int virSystemdTerminateMachine(const char *name)
* in 'ps' listing & similar
*/
message = g_variant_new("(s)", name);
VIR_DEBUG("Attempting to terminate machine via systemd");
if (virDBusCallMethod(conn,
if (virGDBusCallMethod(conn,
NULL,
&error,
error,
"org.freedesktop.machine1",
"/org/freedesktop/machine1",
"org.freedesktop.machine1.Manager",
"TerminateMachine",
"s",
name) < 0)
goto cleanup;
message) < 0)
return -1;
if (error.level == VIR_ERR_ERROR &&
if (error->level == VIR_ERR_ERROR &&
STRNEQ_NULLABLE("org.freedesktop.machine1.NoSuchMachine",
error.str1)) {
virReportErrorObject(&error);
goto cleanup;
error->str1)) {
virReportErrorObject(error);
return -1;
}
ret = 0;
cleanup:
virResetError(&error);
return ret;
return 0;
}
void
@ -559,41 +579,32 @@ virSystemdNotifyStartup(void)
static int
virSystemdPMSupportTarget(const char *methodName, bool *result)
{
int ret;
DBusConnection *conn;
DBusMessage *message = NULL;
int rc;
GDBusConnection *conn;
g_autoptr(GVariant) reply = NULL;
char *response;
if ((ret = virSystemdHasLogind()) < 0)
return ret;
if ((rc = virSystemdHasLogind()) < 0)
return rc;
if (!(conn = virDBusGetSystemBus()))
if (!(conn = virGDBusGetSystemBus()))
return -1;
ret = -1;
if (virDBusCallMethod(conn,
&message,
if (virGDBusCallMethod(conn,
&reply,
NULL,
"org.freedesktop.login1",
"/org/freedesktop/login1",
"org.freedesktop.login1.Manager",
methodName,
NULL) < 0)
return ret;
return -1;
if ((ret = virDBusMessageDecode(message, "s", &response)) < 0)
goto cleanup;
g_variant_get(reply, "(&s)", &response);
*result = STREQ("yes", response) || STREQ("challenge", response);
ret = 0;
cleanup:
virDBusMessageUnref(message);
VIR_FREE(response);
return ret;
return 0;
}
int virSystemdCanSuspend(bool *result)

2
tests/meson.build
View File

@ -332,6 +332,7 @@ tests += [
{ 'name': 'virschematest' },
{ 'name': 'virshtest' },
{ 'name': 'virstringtest' },
{ 'name': 'virsystemdtest' },
{ 'name': 'virtimetest' },
{ 'name': 'virtypedparamtest' },
{ 'name': 'viruritest' },
@ -362,7 +363,6 @@ endif
if conf.has('WITH_DBUS')
tests += [
{ 'name': 'virdbustest', 'deps': [ dbus_dep ] },
{ 'name': 'virsystemdtest', 'deps': [ dbus_dep ] },
]
endif

179
tests/virsystemdtest.c
View File

@ -20,9 +20,8 @@
#include "testutils.h"
#if defined(WITH_DBUS) && defined(__linux__)
#if defined(__linux__)
# include <dbus/dbus.h>
# include <fcntl.h>
# include <unistd.h>
@ -30,7 +29,7 @@
# include "virsystemdpriv.h"
# include "virsystemd.h"
# include "virdbus.h"
# include "virgdbus.h"
# include "virlog.h"
# include "virmock.h"
# include "rpc/virnetsocket.h"
@ -39,125 +38,77 @@
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)
VIR_MOCK_WRAP_RET_ARGS(g_dbus_connection_call_sync,
GVariant *,
GDBusConnection *, connection,
const gchar *, bus_name,
const gchar *, object_path,
const gchar *, interface_name,
const gchar *, method_name,
GVariant *, parameters,
const GVariantType *, reply_type,
GDBusCallFlags, flags,
gint, timeout_msec,
GCancellable *, cancellable,
GError **, error)
{
DBusMessage *reply = NULL;
const char *service = dbus_message_get_destination(message);
const char *member = dbus_message_get_member(message);
GVariant *reply = NULL;
VIR_MOCK_REAL_INIT(dbus_connection_send_with_reply_and_block);
if (parameters)
g_variant_unref(parameters);
if (STREQ(service, "org.freedesktop.machine1")) {
VIR_MOCK_REAL_INIT(g_dbus_connection_call_sync);
if (STREQ(bus_name, "org.freedesktop.machine1")) {
if (getenv("FAIL_BAD_SERVICE")) {
dbus_set_error_const(error,
*error = g_dbus_error_new_for_dbus_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);
if (STREQ(method_name, "GetMachineByPID")) {
reply = g_variant_new("(o)",
"/org/freedesktop/machine1/machine/qemu_2ddemo");
} else if (STREQ(method_name, "Get")) {
reply = g_variant_new("(v)", g_variant_new_string("qemu-demo"));
} else {
reply = dbus_message_new(DBUS_MESSAGE_TYPE_METHOD_RETURN);
reply = g_variant_new("()");
}
}
} else if (STREQ(bus_name, "org.freedesktop.login1")) {
reply = g_variant_new("(s)", getenv("RESULT_SUPPORT"));
} else if (STREQ(bus_name, "org.freedesktop.DBus") &&
STREQ(method_name, "ListActivatableNames")) {
GVariantBuilder builder;
g_variant_builder_init(&builder, G_VARIANT_TYPE("as"));
g_variant_builder_add(&builder, "s", "org.foo.bar.wizz");
if (!getenv("FAIL_NO_SERVICE")) {
g_variant_builder_add(&builder, "s", "org.freedesktop.machine1");
g_variant_builder_add(&builder, "s", "org.freedesktop.login1");
}
reply = g_variant_new("(@as)", g_variant_builder_end(&builder));
} else if (STREQ(bus_name, "org.freedesktop.DBus") &&
STREQ(method_name, "ListNames")) {
GVariantBuilder builder;
g_variant_builder_init(&builder, G_VARIANT_TYPE("as"));
g_variant_builder_add(&builder, "s", "org.foo.bar.wizz");
if (!getenv("FAIL_NO_SERVICE") && !getenv("FAIL_NOT_REGISTERED")) {
g_variant_builder_add(&builder, "s", "org.freedesktop.systemd1");
g_variant_builder_add(&builder, "s", "org.freedesktop.login1");
}
reply = g_variant_new("(@as)", g_variant_builder_end(&builder));
} else {
reply = g_variant_new("()");
}
return reply;
error:
virDBusMessageUnref(reply);
return NULL;
}
@ -794,12 +745,12 @@ mymain(void)
return ret == 0 ? EXIT_SUCCESS : EXIT_FAILURE;
}
VIR_TEST_MAIN_PRELOAD(mymain, VIR_TEST_MOCK("virdbus"))
VIR_TEST_MAIN_PRELOAD(mymain, VIR_TEST_MOCK("virgdbus"))
#else /* ! (WITH_DBUS && __linux__) */
#else /* ! __linux__ */
int
main(void)
{
return EXIT_AM_SKIP;
}
#endif /* ! WITH_DBUS */
#endif /* ! __linux__ */