logind: add "background-light" session class

This is the same as the "background" class, but does *not* pull in a
service manager. It might be useful for things like select cron jobs
that do not intend to call per-user IPC calls.

Replaces: #23569
Fixes: #23978

diff --git a/src/login/logind-session.c b/src/login/logind-session.c
index d8fe018e1da6617a4f7bc3950d93f266f05084a4..e9d95e1db8f97fe20fbe0dc144e0f64eb9d8faf1 100644 (file)
--- a/src/login/logind-session.c
+++ b/src/login/logind-session.c
@@ -1639,13 +1639,14 @@ static const char* const session_type_table[_SESSION_TYPE_MAX] = {
 DEFINE_STRING_TABLE_LOOKUP(session_type, SessionType);
 
 static const char* const session_class_table[_SESSION_CLASS_MAX] = {
-        [SESSION_USER]          = "user",
-        [SESSION_USER_EARLY]    = "user-early",
-        [SESSION_GREETER]       = "greeter",
-        [SESSION_LOCK_SCREEN]   = "lock-screen",
-        [SESSION_BACKGROUND]    = "background",
-        [SESSION_MANAGER]       = "manager",
-        [SESSION_MANAGER_EARLY] = "manager-early",
+        [SESSION_USER]              = "user",
+        [SESSION_USER_EARLY]        = "user-early",
+        [SESSION_GREETER]           = "greeter",
+        [SESSION_LOCK_SCREEN]       = "lock-screen",
+        [SESSION_BACKGROUND]        = "background",
+        [SESSION_BACKGROUND_LIGHT]  = "background-light",
+        [SESSION_MANAGER]           = "manager",
+        [SESSION_MANAGER_EARLY]     = "manager-early",
 };
 
 DEFINE_STRING_TABLE_LOOKUP(session_class, SessionClass);

diff --git a/src/login/logind-session.h b/src/login/logind-session.h
index 2b61f966b5fdc2092b6acc15767828c72c166d60..3cc416bf682f552bbf08beb63e49949d7ba8b201 100644 (file)
--- a/src/login/logind-session.h
+++ b/src/login/logind-session.h
@@ -25,6 +25,7 @@ typedef enum SessionClass {
         SESSION_GREETER,            /* A login greeter pseudo-session */
         SESSION_LOCK_SCREEN,        /* A lock screen */
         SESSION_BACKGROUND,         /* Things like cron jobs, which are non-interactive */
+        SESSION_BACKGROUND_LIGHT,   /* Like SESSION_BACKGROUND, but without the service manager */
         SESSION_MANAGER,            /* The service manager */
         SESSION_MANAGER_EARLY,      /* The service manager for root (which is allowed to run before systemd-user-sessions.service) */
         _SESSION_CLASS_MAX,
@@ -36,7 +37,7 @@ typedef enum SessionClass {
 #define SESSION_CLASS_IS_EARLY(class) IN_SET((class), SESSION_USER_EARLY, SESSION_MANAGER_EARLY)
 
 /* Which session classes want their own scope units? (all of them, except the manager, which comes in its own service unit already */
-#define SESSION_CLASS_WANTS_SCOPE(class) IN_SET((class), SESSION_USER, SESSION_USER_EARLY, SESSION_GREETER, SESSION_LOCK_SCREEN, SESSION_BACKGROUND)
+#define SESSION_CLASS_WANTS_SCOPE(class) IN_SET((class), SESSION_USER, SESSION_USER_EARLY, SESSION_GREETER, SESSION_LOCK_SCREEN, SESSION_BACKGROUND, SESSION_BACKGROUND_LIGHT)
 
 /* Which session classes want their own per-user service manager? */
 #define SESSION_CLASS_WANTS_SERVICE_MANAGER(class) IN_SET((class), SESSION_USER, SESSION_USER_EARLY, SESSION_GREETER, SESSION_LOCK_SCREEN, SESSION_BACKGROUND)