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shell: Refactor internal calls to systemd service

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Add some parameters to make these calls useful beyond starting
and stopping units. We will need to query the existence of units
for starters.

Part-of: <https://gitlab.gnome.org/GNOME/gnome-shell/-/merge_requests/2171>
This commit is contained in:
Carlos Garnacho 2022-02-10 14:05:41 +01:00 committed by Marge Bot
parent 4b56acb775
commit adc58ea743
1 changed files with 35 additions and 17 deletions
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52
src/shell-util.c
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@ -516,9 +516,15 @@ shell_util_get_uid (void)
}
#ifdef HAVE_SYSTEMD
typedef enum {
SYSTEMD_CALL_FLAGS_NONE = 0,
SYSTEMD_CALL_FLAGS_WATCH_JOB = 1 << 0,
} SystemdFlags;
typedef struct {
GDBusConnection *connection;
gchar *command;
SystemdFlags flags;
GCancellable *cancellable;
gulong cancel_id;
@ -593,7 +599,10 @@ on_systemd_call_cb (GObject *source,
g_assert (data->job == NULL);
g_variant_get (reply, "(o)", &data->job);
/* And we wait for the JobRemoved notification. */
/* we should either wait for the JobRemoved notification, or
* notify here */
if ((data->flags & SYSTEMD_CALL_FLAGS_WATCH_JOB) == 0)
g_task_return_boolean (task, TRUE);
}
static void
@ -642,8 +651,8 @@ on_systemd_job_removed_cb (GDBusConnection *connection,
static void
shell_util_systemd_call (const char *command,
const char *unit,
const char *mode,
GVariant *params,
SystemdFlags flags,
GCancellable *cancellable,
GAsyncReadyCallback callback,
gpointer user_data)
@ -690,16 +699,22 @@ shell_util_systemd_call (const char *command,
data = g_new0 (SystemdCall, 1);
data->command = g_strdup (command);
data->connection = g_object_ref (connection);
data->job_watch = g_dbus_connection_signal_subscribe (connection,
"org.freedesktop.systemd1",
"org.freedesktop.systemd1.Manager",
"JobRemoved",
"/org/freedesktop/systemd1",
NULL,
G_DBUS_SIGNAL_FLAGS_NONE,
on_systemd_job_removed_cb,
task,
NULL);
data->flags = flags;
if ((data->flags & SYSTEMD_CALL_FLAGS_WATCH_JOB) != 0)
{
data->job_watch = g_dbus_connection_signal_subscribe (connection,
"org.freedesktop.systemd1",
"org.freedesktop.systemd1.Manager",
"JobRemoved",
"/org/freedesktop/systemd1",
NULL,
G_DBUS_SIGNAL_FLAGS_NONE,
on_systemd_job_removed_cb,
task,
NULL);
}
g_task_set_task_data (task,
data,
(GDestroyNotify) shell_util_systemd_call_data_free);
@ -718,8 +733,7 @@ shell_util_systemd_call (const char *command,
"/org/freedesktop/systemd1",
"org.freedesktop.systemd1.Manager",
command,
g_variant_new ("(ss)",
unit, mode),
params,
G_VARIANT_TYPE ("(o)"),
G_DBUS_CALL_FLAGS_NONE,
-1, cancellable,
@ -740,7 +754,9 @@ shell_util_start_systemd_unit (const char *unit,
GAsyncReadyCallback callback,
gpointer user_data)
{
shell_util_systemd_call ("StartUnit", unit, mode,
shell_util_systemd_call ("StartUnit",
g_variant_new ("(ss)", unit, mode),
SYSTEMD_CALL_FLAGS_WATCH_JOB,
cancellable, callback, user_data);
}
@ -758,7 +774,9 @@ shell_util_stop_systemd_unit (const char *unit,
GAsyncReadyCallback callback,
gpointer user_data)
{
shell_util_systemd_call ("StopUnit", unit, mode,
shell_util_systemd_call ("StopUnit",
g_variant_new ("(ss)", unit, mode),
SYSTEMD_CALL_FLAGS_WATCH_JOB,
cancellable, callback, user_data);
}