terminal: allow user-context to be retrieved/stored

Add "userdata" storage to a bunch of external objects, namely displays and
sessions. Furthermore, add some property retrieval helpers.

This is required if we want external API users to not duplicate our own
object hashtables, but retrieve context from the objects themselves.

6 files changed, 47 insertions, 0 deletions

diff --git a/src/libsystemd-terminal/grdev-internal.h b/src/libsystemd-terminal/grdev-internal.h
index f5915b16e8..ee182695ce 100644
--- a/src/libsystemd-terminal/grdev-internal.h
+++ b/src/libsystemd-terminal/grdev-internal.h
@@ -94,6 +94,7 @@ DEFINE_TRIVIAL_CLEANUP_FUNC(grdev_tile*, grdev_tile_free);
 struct grdev_display {
         grdev_session *session;
         char *name;
+        void *userdata;
 
         size_t n_leafs;
         grdev_tile *tile;
diff --git a/src/libsystemd-terminal/grdev.c b/src/libsystemd-terminal/grdev.c
index 43d0c7c9bf..e34112ee7c 100644
--- a/src/libsystemd-terminal/grdev.c
+++ b/src/libsystemd-terminal/grdev.c
@@ -282,6 +282,24 @@ grdev_display *grdev_display_free(grdev_display *display) {
         return NULL;
 }
 
+void grdev_display_set_userdata(grdev_display *display, void *userdata) {
+        assert(display);
+
+        display->userdata = userdata;
+}
+
+void *grdev_display_get_userdata(grdev_display *display) {
+        assert_return(display, NULL);
+
+        return display->userdata;
+}
+
+const char *grdev_display_get_name(grdev_display *display) {
+        assert_return(display, NULL);
+
+        return display->name;
+}
+
 bool grdev_display_is_enabled(grdev_display *display) {
         return display && display->enabled;
 }
diff --git a/src/libsystemd-terminal/grdev.h b/src/libsystemd-terminal/grdev.h
index 9924a257b6..5f745aaad4 100644
--- a/src/libsystemd-terminal/grdev.h
+++ b/src/libsystemd-terminal/grdev.h
@@ -108,6 +108,11 @@ struct grdev_display_target {
         const grdev_fb *fb;
 };
 
+void grdev_display_set_userdata(grdev_display *display, void *userdata);
+void *grdev_display_get_userdata(grdev_display *display);
+
+const char *grdev_display_get_name(grdev_display *display);
+
 bool grdev_display_is_enabled(grdev_display *display);
 void grdev_display_enable(grdev_display *display);
 void grdev_display_disable(grdev_display *display);
diff --git a/src/libsystemd-terminal/sysview-internal.h b/src/libsystemd-terminal/sysview-internal.h
index 9299fabb82..d9f7fe3301 100644
--- a/src/libsystemd-terminal/sysview-internal.h
+++ b/src/libsystemd-terminal/sysview-internal.h
@@ -64,6 +64,7 @@ struct sysview_session {
         sysview_seat *seat;
         char *name;
         char *path;
+        void *userdata;
 
         sd_bus_slot *slot_take_control;
 
diff --git a/src/libsystemd-terminal/sysview.c b/src/libsystemd-terminal/sysview.c
index 5b623c1e6c..208c6ce25c 100644
--- a/src/libsystemd-terminal/sysview.c
+++ b/src/libsystemd-terminal/sysview.c
@@ -104,6 +104,12 @@ sysview_device *sysview_device_free(sysview_device *device) {
         return NULL;
 }
 
+const char *sysview_device_get_name(sysview_device *device) {
+        assert_return(device, NULL);
+
+        return device->name;
+}
+
 unsigned int sysview_device_get_type(sysview_device *device) {
         assert_return(device, (unsigned)-1);
 
@@ -243,6 +249,18 @@ sysview_session *sysview_session_free(sysview_session *session) {
         return NULL;
 }
 
+void sysview_session_set_userdata(sysview_session *session, void *userdata) {
+        assert(session);
+
+        session->userdata = userdata;
+}
+
+void *sysview_session_get_userdata(sysview_session *session) {
+        assert_return(session, NULL);
+
+        return session->userdata;
+}
+
 const char *sysview_session_get_name(sysview_session *session) {
         assert_return(session, NULL);
 
diff --git a/src/libsystemd-terminal/sysview.h b/src/libsystemd-terminal/sysview.h
index 4d800f8d69..f691e492d5 100644
--- a/src/libsystemd-terminal/sysview.h
+++ b/src/libsystemd-terminal/sysview.h
@@ -116,6 +116,7 @@ enum {
         SYSVIEW_DEVICE_CNT
 };
 
+const char *sysview_device_get_name(sysview_device *device);
 unsigned int sysview_device_get_type(sysview_device *device);
 struct udev_device *sysview_device_get_ud(sysview_device *device);
 
@@ -123,6 +124,9 @@ struct udev_device *sysview_device_get_ud(sysview_device *device);
  * Sessions
  */
 
+void sysview_session_set_userdata(sysview_session *session, void *userdata);
+void *sysview_session_get_userdata(sysview_session *session);
+
 const char *sysview_session_get_name(sysview_session *session);
 
 int sysview_session_take_control(sysview_session *session);