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dbus: duplicate Job.Cancel() as CancelJob() and Snapshot.Remove() as RemoveSnapshot() on the Manager interface

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For all other object mehtods there are already counterparts on the
manager object, as they help us reduce round-trips. So let's complete
this, and reduce complexity on the client side a bit.

As a side effect this also makes "systemctl snapshot" without arguments
work again.
This commit is contained in:
Lennart Poettering 2013-01-10 22:45:45 +01:00
parent d354315ff7
commit 5dd9014faf
4 changed files with 99 additions and 110 deletions
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4
src/core/dbus-job.c
View File

@ -101,12 +101,11 @@ static DBusHandlerResult bus_job_message_dispatch(Job *j, DBusConnection *connec
if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Job", "Cancel")) {
SELINUX_UNIT_ACCESS_CHECK(j->unit, connection, message, "stop");
job_finish_and_invalidate(j, JOB_CANCELED, true);
reply = dbus_message_new_method_return(message);
if (!reply)
return DBUS_HANDLER_RESULT_NEED_MEMORY;
job_finish_and_invalidate(j, JOB_CANCELED, true);
} else {
const BusBoundProperties bps[] = {
{ "org.freedesktop.systemd1.Job", bus_job_properties, j },
@ -114,7 +113,6 @@ static DBusHandlerResult bus_job_message_dispatch(Job *j, DBusConnection *connec
};
SELINUX_UNIT_ACCESS_CHECK(j->unit, connection, message, "status");
return bus_default_message_handler(connection, message, INTROSPECTION, INTERFACES_LIST, bps);
}

60
src/core/dbus-manager.c
View File

@ -106,6 +106,9 @@
" <arg name=\"id\" type=\"u\" direction=\"in\"/>\n" \
" <arg name=\"job\" type=\"o\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"CancelJob\">\n" \
" <arg name=\"id\" type=\"u\" direction=\"in\"/>\n" \
" </method>\n" \
" <method name=\"ClearJobs\"/>\n" \
" <method name=\"ResetFailed\"/>\n" \
" <method name=\"ListUnits\">\n" \
@ -124,6 +127,9 @@
" <arg name=\"cleanup\" type=\"b\" direction=\"in\"/>\n" \
" <arg name=\"unit\" type=\"o\" direction=\"out\"/>\n" \
" </method>\n" \
" <method name=\"RemoveSnapshot\">\n" \
" <arg name=\"name\" type=\"s\" direction=\"in\"/>\n" \
" </method>\n" \
" <method name=\"Reload\"/>\n" \
" <method name=\"Reexecute\"/>\n" \
" <method name=\"Exit\"/>\n" \
@ -774,10 +780,33 @@ static DBusHandlerResult bus_manager_message_handler(DBusConnection *connection,
DBUS_TYPE_INVALID))
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "CancelJob")) {
uint32_t id;
Job *j;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_UINT32, &id,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
j = manager_get_job(m, id);
if (!j) {
dbus_set_error(&error, BUS_ERROR_NO_SUCH_JOB, "Job %u does not exist.", (unsigned) id);
return bus_send_error_reply(connection, message, &error, -ENOENT);
}
SELINUX_UNIT_ACCESS_CHECK(j->unit, connection, message, "stop");
job_finish_and_invalidate(j, JOB_CANCELED, true);
reply = dbus_message_new_method_return(message);
if (!reply)
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "ClearJobs")) {
SELINUX_ACCESS_CHECK(connection, message, "reboot");
manager_clear_jobs(m);
reply = dbus_message_new_method_return(message);
@ -1080,6 +1109,35 @@ static DBusHandlerResult bus_manager_message_handler(DBusConnection *connection,
DBUS_TYPE_INVALID))
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Manager", "RemoveSnapshot")) {
const char *name;
Unit *u;
if (!dbus_message_get_args(
message,
&error,
DBUS_TYPE_STRING, &name,
DBUS_TYPE_INVALID))
return bus_send_error_reply(connection, message, &error, -EINVAL);
u = manager_get_unit(m, name);
if (!u) {
dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s does not exist.", name);
return bus_send_error_reply(connection, message, &error, -ENOENT);
}
if (u->type != UNIT_SNAPSHOT) {
dbus_set_error(&error, BUS_ERROR_NO_SUCH_UNIT, "Unit %s is not a snapshot.", name);
return bus_send_error_reply(connection, message, &error, -ENOENT);
}
SELINUX_UNIT_ACCESS_CHECK(u, connection, message, "stop");
snapshot_remove(SNAPSHOT(u));
reply = dbus_message_new_method_return(message);
if (!reply)
goto oom;
} else if (dbus_message_is_method_call(message, "org.freedesktop.DBus.Introspectable", "Introspect")) {
char *introspection = NULL;
FILE *f;

18
src/core/dbus-snapshot.c
View File

@ -54,19 +54,16 @@ static const BusProperty bus_snapshot_properties[] = {
DBusHandlerResult bus_snapshot_message_handler(Unit *u, DBusConnection *c, DBusMessage *message) {
Snapshot *s = SNAPSHOT(u);
_cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
DBusError error;
dbus_error_init(&error);
if (dbus_message_is_method_call(message, "org.freedesktop.systemd1.Snapshot", "Remove")) {
SELINUX_UNIT_ACCESS_CHECK(u, c, message, "stop");
snapshot_remove(SNAPSHOT(u));
reply = dbus_message_new_method_return(message);
if (!reply)
goto oom;
return DBUS_HANDLER_RESULT_NEED_MEMORY;
snapshot_remove(SNAPSHOT(u));
} else {
const BusBoundProperties bps[] = {
@ -80,15 +77,8 @@ DBusHandlerResult bus_snapshot_message_handler(Unit *u, DBusConnection *c, DBusM
return bus_default_message_handler(c, message, INTROSPECTION, INTERFACES_LIST, bps);
}
if (reply) {
if (!dbus_connection_send(c, reply, NULL))
goto oom;
}
return DBUS_HANDLER_RESULT_NEED_MEMORY;
return DBUS_HANDLER_RESULT_HANDLED;
oom:
dbus_error_free(&error);
return DBUS_HANDLER_RESULT_NEED_MEMORY;
}

127
src/systemctl/systemctl.c
View File

@ -1032,12 +1032,14 @@ finish:
}
static int load_unit(DBusConnection *bus, char **args) {
int r = 0;
char **name, *n;
char **name;
assert(args);
STRV_FOREACH(name, args+1) {
_cleanup_free_ char *n = NULL;
int r;
n = unit_name_mangle(*name);
r = bus_method_call_with_reply (
bus,
@ -1049,18 +1051,14 @@ static int load_unit(DBusConnection *bus, char **args) {
NULL,
DBUS_TYPE_STRING, n ? &n : name,
DBUS_TYPE_INVALID);
free(n);
if (r)
goto finish;
}
finish:
if (r < 0)
return r;
}
return 0;
}
static int cancel_job(DBusConnection *bus, char **args) {
DBusMessage *reply = NULL;
int r = 0;
char **name;
assert(args);
@ -1069,56 +1067,32 @@ static int cancel_job(DBusConnection *bus, char **args) {
return daemon_reload(bus, args);
STRV_FOREACH(name, args+1) {
unsigned id;
const char *path;
uint32_t id;
int r;
r = safe_atou(*name, &id);
r = safe_atou32(*name, &id);
if (r < 0) {
log_error("Failed to parse job id: %s", strerror(-r));
goto finish;
return r;
}
assert_cc(sizeof(uint32_t) == sizeof(id));
r = bus_method_call_with_reply(
bus,
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"GetJob",
&reply,
"CancelJob",
NULL,
NULL,
DBUS_TYPE_UINT32, &id,
DBUS_TYPE_INVALID);
if (r)
goto finish;
if (!dbus_message_get_args(reply, NULL,
DBUS_TYPE_OBJECT_PATH, &path,
DBUS_TYPE_INVALID)) {
log_error("Failed to parse reply");
dbus_message_unref(reply);
r = -EIO;
goto finish;
}
dbus_message_unref(reply);
r = bus_method_call_with_reply (
bus,
"org.freedesktop.systemd1",
path,
"org.freedesktop.systemd1.Job",
"Cancel",
NULL,
NULL,
DBUS_TYPE_INVALID);
if (r)
goto finish;
}
finish:
if (r < 0)
return r;
}
return 0;
}
static bool need_daemon_reload(DBusConnection *bus, const char *unit) {
DBusMessage *reply = NULL;
dbus_bool_t b = FALSE;
@ -3062,7 +3036,7 @@ finish:
}
static int snapshot(DBusConnection *bus, char **args) {
DBusMessage *reply = NULL;
_cleanup_dbus_message_unref_ DBusMessage *reply = NULL;
DBusError error;
int r;
dbus_bool_t cleanup = FALSE;
@ -3071,14 +3045,15 @@ static int snapshot(DBusConnection *bus, char **args) {
*name = "", *path, *id,
*interface = "org.freedesktop.systemd1.Unit",
*property = "Id";
char *n;
_cleanup_free_ char *n = NULL;
dbus_error_init(&error);
if (strv_length(args) > 1)
if (strv_length(args) > 1) {
name = args[1];
n = unit_name_mangle(name);
}
r = bus_method_call_with_reply (
bus,
"org.freedesktop.systemd1",
@ -3090,8 +3065,7 @@ static int snapshot(DBusConnection *bus, char **args) {
DBUS_TYPE_STRING, n ? (const char**) &n : &name,
DBUS_TYPE_BOOLEAN, &cleanup,
DBUS_TYPE_INVALID);
free(n);
if (r)
if (r < 0)
goto finish;
if (!dbus_message_get_args(reply, &error,
@ -3103,6 +3077,8 @@ static int snapshot(DBusConnection *bus, char **args) {
}
dbus_message_unref(reply);
reply = NULL;
r = bus_method_call_with_reply (
bus,
"org.freedesktop.systemd1",
@ -3114,7 +3090,7 @@ static int snapshot(DBusConnection *bus, char **args) {
DBUS_TYPE_STRING, &interface,
DBUS_TYPE_STRING, &property,
DBUS_TYPE_INVALID);
if (r)
if (r < 0)
goto finish;
if (!dbus_message_iter_init(reply, &iter) ||
@ -3138,27 +3114,19 @@ static int snapshot(DBusConnection *bus, char **args) {
puts(id);
finish:
if (reply)
dbus_message_unref(reply);
dbus_error_free(&error);
return r;
}
static int delete_snapshot(DBusConnection *bus, char **args) {
DBusMessage *reply = NULL;
int r = 0;
DBusError error;
char **name;
assert(args);
dbus_error_init(&error);
STRV_FOREACH(name, args+1) {
const char *path = NULL;
char *n;
_cleanup_free_ char *n = NULL;
int r;
n = unit_name_mangle(*name);
r = bus_method_call_with_reply(
@ -3166,43 +3134,18 @@ static int delete_snapshot(DBusConnection *bus, char **args) {
"org.freedesktop.systemd1",
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
"GetUnit",
&reply,
"RemoveSnapshot",
NULL,
NULL,
DBUS_TYPE_STRING, n ? &n : name,
DBUS_TYPE_INVALID);
free(n);
if (r)
goto finish;
if (!dbus_message_get_args(reply, &error,
DBUS_TYPE_OBJECT_PATH, &path,
DBUS_TYPE_INVALID)) {
log_error("Failed to parse reply: %s", bus_error_message(&error));
r = -EIO;
dbus_message_unref(reply);
dbus_error_free(&error);
goto finish;
}
dbus_message_unref(reply);
r = bus_method_call_with_reply (
bus,
"org.freedesktop.systemd1",
path,
"org.freedesktop.systemd1.Snapshot",
"Remove",
NULL,
NULL,
DBUS_TYPE_INVALID);
if (r)
goto finish;
}
finish:
if (r < 0)
return r;
}
return 0;
}
static int daemon_reload(DBusConnection *bus, char **args) {
int r;
const char *method;