Refactor: remove `BKE_<id_type>_copy` functions.

Those were only shallow wrappers around `BKE_id_copy`, barely used (even
fully unused in some cases), and we want to get rid of those ID-specific
helpers for the common ID management tasks. Also prevents weird custom
behaviors (like `BKE_object_copy`, who was the only basic ID copy
function to reset user count of the new copy to zero).

Part of 71219.

55 files changed, 9 insertions, 203 deletions

diff --git a/source/blender/blenkernel/BKE_action.h b/source/blender/blenkernel/BKE_action.h
index e08604f02ad..699387a18c7 100644
--- a/source/blender/blenkernel/BKE_action.h
+++ b/source/blender/blenkernel/BKE_action.h
@@ -47,9 +47,6 @@ struct bPoseChannel_Runtime;
 /* Allocate a new bAction with the given name */
 struct bAction *BKE_action_add(struct Main *bmain, const char name[]);
 
-/* Allocate a copy of the given Action and all its data */
-struct bAction *BKE_action_copy(struct Main *bmain, const struct bAction *act_src);
-
 /* Action API ----------------- */
 
 /* types of transforms applied to the given item
diff --git a/source/blender/blenkernel/BKE_armature.h b/source/blender/blenkernel/BKE_armature.h
index 092ca85a570..4e8775aefb3 100644
--- a/source/blender/blenkernel/BKE_armature.h
+++ b/source/blender/blenkernel/BKE_armature.h
@@ -143,7 +143,6 @@ struct bArmature *BKE_armature_from_object(struct Object *ob);
 int BKE_armature_bonelist_count(struct ListBase *lb);
 void BKE_armature_bonelist_free(struct ListBase *lb, const bool do_id_user);
 void BKE_armature_editbonelist_free(struct ListBase *lb, const bool do_id_user);
-struct bArmature *BKE_armature_copy(struct Main *bmain, const struct bArmature *arm);
 
 void BKE_armature_copy_bone_transforms(struct bArmature *armature_dst,
                                        const struct bArmature *armature_src);
diff --git a/source/blender/blenkernel/BKE_brush.h b/source/blender/blenkernel/BKE_brush.h
index b14d24e205a..e551ed76b6f 100644
--- a/source/blender/blenkernel/BKE_brush.h
+++ b/source/blender/blenkernel/BKE_brush.h
@@ -52,7 +52,6 @@ struct Brush *BKE_brush_add_gpencil(struct Main *bmain,
 bool BKE_brush_delete(struct Main *bmain, struct Brush *brush);
 void BKE_brush_init_gpencil_settings(struct Brush *brush);
 struct Brush *BKE_brush_first_search(struct Main *bmain, const eObjectMode ob_mode);
-struct Brush *BKE_brush_copy(struct Main *bmain, const struct Brush *brush);
 
 void BKE_brush_sculpt_reset(struct Brush *brush);
 
diff --git a/source/blender/blenkernel/BKE_cachefile.h b/source/blender/blenkernel/BKE_cachefile.h
index 9912b4e4b70..a6b2aa8540a 100644
--- a/source/blender/blenkernel/BKE_cachefile.h
+++ b/source/blender/blenkernel/BKE_cachefile.h
@@ -38,8 +38,6 @@ void BKE_cachefiles_exit(void);
 
 void *BKE_cachefile_add(struct Main *bmain, const char *name);
 
-struct CacheFile *BKE_cachefile_copy(struct Main *bmain, const struct CacheFile *cache_file);
-
 void BKE_cachefile_reload(struct Depsgraph *depsgraph, struct CacheFile *cache_file);
 
 void BKE_cachefile_eval(struct Main *bmain,
diff --git a/source/blender/blenkernel/BKE_camera.h b/source/blender/blenkernel/BKE_camera.h
index 2ea03f30d88..b42fcbe7808 100644
--- a/source/blender/blenkernel/BKE_camera.h
+++ b/source/blender/blenkernel/BKE_camera.h
@@ -40,7 +40,6 @@ struct rctf;
 /* Camera Datablock */
 
 void *BKE_camera_add(struct Main *bmain, const char *name);
-struct Camera *BKE_camera_copy(struct Main *bmain, const struct Camera *cam);
 
 /* Camera Usage */
 
diff --git a/source/blender/blenkernel/BKE_curve.h b/source/blender/blenkernel/BKE_curve.h
index 91a9bcbc602..2b238ef18f5 100644
--- a/source/blender/blenkernel/BKE_curve.h
+++ b/source/blender/blenkernel/BKE_curve.h
@@ -84,7 +84,6 @@ typedef struct CVKeyIndex {
 void BKE_curve_editfont_free(struct Curve *cu);
 void BKE_curve_init(struct Curve *cu, const short curve_type);
 struct Curve *BKE_curve_add(struct Main *bmain, const char *name, int type);
-struct Curve *BKE_curve_copy(struct Main *bmain, const struct Curve *cu);
 short BKE_curve_type_get(const struct Curve *cu);
 void BKE_curve_type_test(struct Object *ob);
 void BKE_curve_curve_dimension_update(struct Curve *cu);
diff --git a/source/blender/blenkernel/BKE_gpencil.h b/source/blender/blenkernel/BKE_gpencil.h
index b07946856fd..7d50599a8f0 100644
--- a/source/blender/blenkernel/BKE_gpencil.h
+++ b/source/blender/blenkernel/BKE_gpencil.h
@@ -113,8 +113,6 @@ struct bGPDlayer *BKE_gpencil_layer_duplicate(const struct bGPDlayer *gpl_src);
 void BKE_gpencil_frame_copy_strokes(struct bGPDframe *gpf_src, struct bGPDframe *gpf_dst);
 struct bGPDstroke *BKE_gpencil_stroke_duplicate(struct bGPDstroke *gps_src, const bool dup_points);
 
-struct bGPdata *BKE_gpencil_copy(struct Main *bmain, const struct bGPdata *gpd);
-
 struct bGPdata *BKE_gpencil_data_duplicate(struct Main *bmain,
                                            const struct bGPdata *gpd,
                                            bool internal_copy);
diff --git a/source/blender/blenkernel/BKE_hair.h b/source/blender/blenkernel/BKE_hair.h
index 3bbe0ffa180..1d7985e5c98 100644
--- a/source/blender/blenkernel/BKE_hair.h
+++ b/source/blender/blenkernel/BKE_hair.h
@@ -35,7 +35,6 @@ struct Object;
 struct Scene;
 
 void *BKE_hair_add(struct Main *bmain, const char *name);
-struct Hair *BKE_hair_copy(struct Main *bmain, const struct Hair *hair);
 
 struct BoundBox *BKE_hair_boundbox_get(struct Object *ob);
 
diff --git a/source/blender/blenkernel/BKE_image.h b/source/blender/blenkernel/BKE_image.h
index 369ddc444b6..303945dbf64 100644
--- a/source/blender/blenkernel/BKE_image.h
+++ b/source/blender/blenkernel/BKE_image.h
@@ -288,9 +288,6 @@ void BKE_image_packfiles_from_mem(struct ReportList *reports,
 /* prints memory statistics for images */
 void BKE_image_print_memlist(struct Main *bmain);
 
-/* empty image block, of similar type and filename */
-struct Image *BKE_image_copy(struct Main *bmain, const struct Image *ima);
-
 /* merge source into dest, and free source */
 void BKE_image_merge(struct Main *bmain, struct Image *dest, struct Image *source);
 
diff --git a/source/blender/blenkernel/BKE_key.h b/source/blender/blenkernel/BKE_key.h
index 347f16d3e0d..e3d69166b62 100644
--- a/source/blender/blenkernel/BKE_key.h
+++ b/source/blender/blenkernel/BKE_key.h
@@ -39,7 +39,6 @@ extern "C" {
 void BKE_key_free(struct Key *key);
 void BKE_key_free_nolib(struct Key *key);
 struct Key *BKE_key_add(struct Main *bmain, struct ID *id);
-struct Key *BKE_key_copy(struct Main *bmain, const struct Key *key);
 struct Key *BKE_key_copy_nolib(struct Key *key);
 void BKE_key_sort(struct Key *key);
 
diff --git a/source/blender/blenkernel/BKE_lattice.h b/source/blender/blenkernel/BKE_lattice.h
index 97f78a997e7..0396d050b35 100644
--- a/source/blender/blenkernel/BKE_lattice.h
+++ b/source/blender/blenkernel/BKE_lattice.h
@@ -43,7 +43,6 @@ struct bGPDstroke;
 
 void BKE_lattice_resize(struct Lattice *lt, int u, int v, int w, struct Object *ltOb);
 struct Lattice *BKE_lattice_add(struct Main *bmain, const char *name);
-struct Lattice *BKE_lattice_copy(struct Main *bmain, const struct Lattice *lt);
 void calc_lat_fudu(int flag, int res, float *r_fu, float *r_du);
 
 bool object_deform_mball(struct Object *ob, struct ListBase *dispbase);
diff --git a/source/blender/blenkernel/BKE_light.h b/source/blender/blenkernel/BKE_light.h
index 9a619f0a0fa..919526b9378 100644
--- a/source/blender/blenkernel/BKE_light.h
+++ b/source/blender/blenkernel/BKE_light.h
@@ -35,7 +35,6 @@ struct Light;
 struct Main;
 
 struct Light *BKE_light_add(struct Main *bmain, const char *name) ATTR_WARN_UNUSED_RESULT;
-struct Light *BKE_light_copy(struct Main *bmain, const struct Light *la) ATTR_WARN_UNUSED_RESULT;
 
 void BKE_light_eval(struct Depsgraph *depsgraph, struct Light *la);
 
diff --git a/source/blender/blenkernel/BKE_lightprobe.h b/source/blender/blenkernel/BKE_lightprobe.h
index e66d4ef75ca..764914ee315 100644
--- a/source/blender/blenkernel/BKE_lightprobe.h
+++ b/source/blender/blenkernel/BKE_lightprobe.h
@@ -33,7 +33,6 @@ struct Main;
 
 void BKE_lightprobe_type_set(struct LightProbe *probe, const short lightprobe_type);
 void *BKE_lightprobe_add(struct Main *bmain, const char *name);
-struct LightProbe *BKE_lightprobe_copy(struct Main *bmain, const struct LightProbe *probe);
 
 #ifdef __cplusplus
 }
diff --git a/source/blender/blenkernel/BKE_linestyle.h b/source/blender/blenkernel/BKE_linestyle.h
index 19238c4d090..1236a96c8d9 100644
--- a/source/blender/blenkernel/BKE_linestyle.h
+++ b/source/blender/blenkernel/BKE_linestyle.h
@@ -42,7 +42,6 @@ struct bContext;
 
 void BKE_linestyle_init(struct FreestyleLineStyle *linestyle);
 FreestyleLineStyle *BKE_linestyle_new(struct Main *bmain, const char *name);
-FreestyleLineStyle *BKE_linestyle_copy(struct Main *bmain, const FreestyleLineStyle *linestyle);
 
 FreestyleLineStyle *BKE_linestyle_active_from_view_layer(struct ViewLayer *view_layer);
 
diff --git a/source/blender/blenkernel/BKE_mask.h b/source/blender/blenkernel/BKE_mask.h
index 5da8332cc53..80092c1d61a 100644
--- a/source/blender/blenkernel/BKE_mask.h
+++ b/source/blender/blenkernel/BKE_mask.h
@@ -142,7 +142,6 @@ void BKE_mask_point_select_set_handle(struct MaskSplinePoint *point,
 /* general */
 struct Mask *BKE_mask_new(struct Main *bmain, const char *name);
 struct Mask *BKE_mask_copy_nolib(struct Mask *mask);
-struct Mask *BKE_mask_copy(struct Main *bmain, const struct Mask *mask);
 
 void BKE_mask_free(struct Mask *mask);
 
diff --git a/source/blender/blenkernel/BKE_material.h b/source/blender/blenkernel/BKE_material.h
index aeb7600d647..14ea50f808a 100644
--- a/source/blender/blenkernel/BKE_material.h
+++ b/source/blender/blenkernel/BKE_material.h
@@ -53,7 +53,6 @@ void BKE_object_material_remap_calc(struct Object *ob_dst,
                                     short *remap_src_to_dst);
 struct Material *BKE_material_add(struct Main *bmain, const char *name);
 struct Material *BKE_gpencil_material_add(struct Main *bmain, const char *name);
-struct Material *BKE_material_copy(struct Main *bmain, const struct Material *ma);
 void BKE_gpencil_material_attr_init(struct Material *ma);
 
 /* UNUSED */
diff --git a/source/blender/blenkernel/BKE_mball.h b/source/blender/blenkernel/BKE_mball.h
index 81a90be3fde..8a294c96e26 100644
--- a/source/blender/blenkernel/BKE_mball.h
+++ b/source/blender/blenkernel/BKE_mball.h
@@ -38,7 +38,6 @@ struct Object;
 struct Scene;
 
 struct MetaBall *BKE_mball_add(struct Main *bmain, const char *name);
-struct MetaBall *BKE_mball_copy(struct Main *bmain, const struct MetaBall *mb);
 
 bool BKE_mball_is_any_selected(const struct MetaBall *mb);
 bool BKE_mball_is_any_selected_multi(struct Base **bases, int bases_len);
diff --git a/source/blender/blenkernel/BKE_mesh.h b/source/blender/blenkernel/BKE_mesh.h
index d976204d0b5..a61e453ec52 100644
--- a/source/blender/blenkernel/BKE_mesh.h
+++ b/source/blender/blenkernel/BKE_mesh.h
@@ -100,7 +100,6 @@ void BKE_mesh_looptri_get_real_edges(const struct Mesh *mesh,
 void BKE_mesh_free(struct Mesh *me);
 void BKE_mesh_clear_geometry(struct Mesh *me);
 struct Mesh *BKE_mesh_add(struct Main *bmain, const char *name);
-struct Mesh *BKE_mesh_copy(struct Main *bmain, const struct Mesh *me);
 void BKE_mesh_copy_settings(struct Mesh *me_dst, const struct Mesh *me_src);
 void BKE_mesh_update_customdata_pointers(struct Mesh *me, const bool do_ensure_tess_cd);
 void BKE_mesh_ensure_skin_customdata(struct Mesh *me);
diff --git a/source/blender/blenkernel/BKE_movieclip.h b/source/blender/blenkernel/BKE_movieclip.h
index 5321f827143..d33eabeb7e0 100644
--- a/source/blender/blenkernel/BKE_movieclip.h
+++ b/source/blender/blenkernel/BKE_movieclip.h
@@ -35,8 +35,6 @@ struct MovieClipScopes;
 struct MovieClipUser;
 struct MovieDistortion;
 
-struct MovieClip *BKE_movieclip_copy(struct Main *bmain, const struct MovieClip *clip);
-
 struct MovieClip *BKE_movieclip_file_add(struct Main *bmain, const char *name);
 struct MovieClip *BKE_movieclip_file_add_exists_ex(struct Main *bmain,
                                                    const char *filepath,
diff --git a/source/blender/blenkernel/BKE_object.h b/source/blender/blenkernel/BKE_object.h
index 06241aca6da..0a992f2cb58 100644
--- a/source/blender/blenkernel/BKE_object.h
+++ b/source/blender/blenkernel/BKE_object.h
@@ -136,7 +136,6 @@ void *BKE_object_obdata_add_from_type(struct Main *bmain, int type, const char *
     ATTR_NONNULL(1);
 int BKE_object_obdata_to_type(const struct ID *id) ATTR_NONNULL(1);
 
-struct Object *BKE_object_copy(struct Main *bmain, const struct Object *ob);
 bool BKE_object_is_libdata(const struct Object *ob);
 bool BKE_object_obdata_is_libdata(const struct Object *ob);
 
diff --git a/source/blender/blenkernel/BKE_paint.h b/source/blender/blenkernel/BKE_paint.h
index dc2a42e3988..a7a837406ac 100644
--- a/source/blender/blenkernel/BKE_paint.h
+++ b/source/blender/blenkernel/BKE_paint.h
@@ -137,7 +137,6 @@ void BKE_paint_set_overlay_override(enum eOverlayFlags flag);
 
 /* palettes */
 struct Palette *BKE_palette_add(struct Main *bmain, const char *name);
-struct Palette *BKE_palette_copy(struct Main *bmain, const struct Palette *palette);
 struct PaletteColor *BKE_palette_color_add(struct Palette *palette);
 bool BKE_palette_is_empty(const struct Palette *palette);
 void BKE_palette_color_remove(struct Palette *palette, struct PaletteColor *color);
@@ -154,7 +153,6 @@ bool BKE_palette_from_hash(struct Main *bmain,
 
 /* paint curves */
 struct PaintCurve *BKE_paint_curve_add(struct Main *bmain, const char *name);
-struct PaintCurve *BKE_paint_curve_copy(struct Main *bmain, const struct PaintCurve *pc);
 
 bool BKE_paint_ensure(struct ToolSettings *ts, struct Paint **r_paint);
 void BKE_paint_init(struct Main *bmain, struct Scene *sce, ePaintMode mode, const char col[3]);
diff --git a/source/blender/blenkernel/BKE_particle.h b/source/blender/blenkernel/BKE_particle.h
index bc695013f8c..f726b48ebeb 100644
--- a/source/blender/blenkernel/BKE_particle.h
+++ b/source/blender/blenkernel/BKE_particle.h
@@ -371,8 +371,6 @@ struct ModifierData *object_copy_particle_system(struct Main *bmain,
                                                  const struct ParticleSystem *psys_orig);
 void object_remove_particle_system(struct Main *bmain, struct Scene *scene, struct Object *ob);
 struct ParticleSettings *BKE_particlesettings_add(struct Main *bmain, const char *name);
-struct ParticleSettings *BKE_particlesettings_copy(struct Main *bmain,
-                                                   const struct ParticleSettings *part);
 void psys_reset(struct ParticleSystem *psys, int mode);
 
 void psys_find_parents(struct ParticleSimulationData *sim, const bool use_render_params);
diff --git a/source/blender/blenkernel/BKE_pointcloud.h b/source/blender/blenkernel/BKE_pointcloud.h
index eaaf22cf9ad..682797991bd 100644
--- a/source/blender/blenkernel/BKE_pointcloud.h
+++ b/source/blender/blenkernel/BKE_pointcloud.h
@@ -41,7 +41,6 @@ extern const char *POINTCLOUD_ATTR_RADIUS;
 
 void *BKE_pointcloud_add(struct Main *bmain, const char *name);
 void *BKE_pointcloud_add_default(struct Main *bmain, const char *name);
-struct PointCloud *BKE_pointcloud_copy(struct Main *bmain, const struct PointCloud *pointcloud);
 
 struct BoundBox *BKE_pointcloud_boundbox_get(struct Object *ob);
 
diff --git a/source/blender/blenkernel/BKE_speaker.h b/source/blender/blenkernel/BKE_speaker.h
index b01824dd794..e288c9f3eb4 100644
--- a/source/blender/blenkernel/BKE_speaker.h
+++ b/source/blender/blenkernel/BKE_speaker.h
@@ -29,7 +29,6 @@ struct Main;
 struct Speaker;
 
 void *BKE_speaker_add(struct Main *bmain, const char *name);
-struct Speaker *BKE_speaker_copy(struct Main *bmain, const struct Speaker *spk);
 
 #ifdef __cplusplus
 }
diff --git a/source/blender/blenkernel/BKE_text.h b/source/blender/blenkernel/BKE_text.h
index 9d5308de280..c60d5c7bfec 100644
--- a/source/blender/blenkernel/BKE_text.h
+++ b/source/blender/blenkernel/BKE_text.h
@@ -39,7 +39,6 @@ struct Text *BKE_text_load_ex(struct Main *bmain,
                               const char *relpath,
                               const bool is_internal);
 struct Text *BKE_text_load(struct Main *bmain, const char *file, const char *relpath);
-struct Text *BKE_text_copy(struct Main *bmain, const struct Text *ta);
 void BKE_text_clear(struct Text *text);
 void BKE_text_write(struct Text *text, const char *str);
 int BKE_text_file_modified_check(struct Text *text);
diff --git a/source/blender/blenkernel/BKE_texture.h b/source/blender/blenkernel/BKE_texture.h
index 47ef0c4c63b..ef322d0cd31 100644
--- a/source/blender/blenkernel/BKE_texture.h
+++ b/source/blender/blenkernel/BKE_texture.h
@@ -45,7 +45,6 @@ struct TexResult;
 void BKE_texture_mtex_foreach_id(struct LibraryForeachIDData *data, struct MTex *mtex);
 
 void BKE_texture_default(struct Tex *tex);
-struct Tex *BKE_texture_copy(struct Main *bmain, const struct Tex *tex);
 struct Tex *BKE_texture_add(struct Main *bmain, const char *name);
 void BKE_texture_type_set(struct Tex *tex, int type);
 
diff --git a/source/blender/blenkernel/BKE_volume.h b/source/blender/blenkernel/BKE_volume.h
index e199a113410..56962371fe4 100644
--- a/source/blender/blenkernel/BKE_volume.h
+++ b/source/blender/blenkernel/BKE_volume.h
@@ -43,7 +43,6 @@ void BKE_volumes_init(void);
 
 void BKE_volume_init_grids(struct Volume *volume);
 void *BKE_volume_add(struct Main *bmain, const char *name);
-struct Volume *BKE_volume_copy(struct Main *bmain, const struct Volume *volume);
 
 struct BoundBox *BKE_volume_boundbox_get(struct Object *ob);
 
diff --git a/source/blender/blenkernel/intern/action.c b/source/blender/blenkernel/intern/action.c
index 4d92390cdcb..1f8c1cca113 100644
--- a/source/blender/blenkernel/intern/action.c
+++ b/source/blender/blenkernel/intern/action.c
@@ -310,11 +310,6 @@ bAction *BKE_action_add(Main *bmain, const char name[])
 
 /* .................................. */
 
-bAction *BKE_action_copy(Main *bmain, const bAction *act_src)
-{
-  return (bAction *)BKE_id_copy(bmain, &act_src->id);
-}
-
 /* *************** Action Groups *************** */
 
 /* Get the active action-group for an Action */
diff --git a/source/blender/blenkernel/intern/anim_data.c b/source/blender/blenkernel/intern/anim_data.c
index c677d976783..6ff705a0379 100644
--- a/source/blender/blenkernel/intern/anim_data.c
+++ b/source/blender/blenkernel/intern/anim_data.c
@@ -397,13 +397,13 @@ static void animdata_copy_id_action(Main *bmain,
   if (adt) {
     if (adt->action && (do_linked_id || !ID_IS_LINKED(adt->action))) {
       id_us_min((ID *)adt->action);
-      adt->action = set_newid ? ID_NEW_SET(adt->action, BKE_action_copy(bmain, adt->action)) :
-                                BKE_action_copy(bmain, adt->action);
+      adt->action = set_newid ? ID_NEW_SET(adt->action, BKE_id_copy(bmain, &adt->action->id)) :
+                                BKE_id_copy(bmain, &adt->action->id);
     }
     if (adt->tmpact && (do_linked_id || !ID_IS_LINKED(adt->tmpact))) {
       id_us_min((ID *)adt->tmpact);
-      adt->tmpact = set_newid ? ID_NEW_SET(adt->tmpact, BKE_action_copy(bmain, adt->tmpact)) :
-                                BKE_action_copy(bmain, adt->tmpact);
+      adt->tmpact = set_newid ? ID_NEW_SET(adt->tmpact, BKE_id_copy(bmain, &adt->tmpact->id)) :
+                                BKE_id_copy(bmain, &adt->tmpact->id);
     }
   }
   bNodeTree *ntree = ntreeFromID(id);
@@ -452,8 +452,8 @@ void BKE_animdata_merge_copy(
   /* handle actions... */
   if (action_mode == ADT_MERGECOPY_SRC_COPY) {
     /* make a copy of the actions */
-    dst->action = BKE_action_copy(bmain, src->action);
-    dst->tmpact = BKE_action_copy(bmain, src->tmpact);
+    dst->action = (bAction *)BKE_id_copy(bmain, &src->action->id);
+    dst->tmpact = (bAction *)BKE_id_copy(bmain, &src->tmpact->id);
   }
   else if (action_mode == ADT_MERGECOPY_SRC_REF) {
     /* make a reference to it */
diff --git a/source/blender/blenkernel/intern/armature.c b/source/blender/blenkernel/intern/armature.c
index 742f57f32a3..ed8c811c116 100644
--- a/source/blender/blenkernel/intern/armature.c
+++ b/source/blender/blenkernel/intern/armature.c
@@ -426,11 +426,6 @@ static void copy_bonechildren_custom_handles(Bone *bone_dst, bArmature *arm_dst)
   }
 }
 
-bArmature *BKE_armature_copy(Main *bmain, const bArmature *arm)
-{
-  return (bArmature *)BKE_id_copy(bmain, &arm->id);
-}
-
 /** \} */
 
 /* -------------------------------------------------------------------- */
diff --git a/source/blender/blenkernel/intern/brush.c b/source/blender/blenkernel/intern/brush.c
index e1524422c3b..3dfddbeed24 100644
--- a/source/blender/blenkernel/intern/brush.c
+++ b/source/blender/blenkernel/intern/brush.c
@@ -170,7 +170,7 @@ static void brush_make_local(Main *bmain, ID *id, const int flags)
       id_fake_user_set(&brush->id);
     }
     else {
-      Brush *brush_new = BKE_brush_copy(bmain, brush); /* Ensures FAKE_USER is set */
+      Brush *brush_new = (Brush *)BKE_id_copy(bmain, &brush->id); /* Ensures FAKE_USER is set */
 
       brush_new->id.us = 0;
 
@@ -1531,11 +1531,6 @@ struct Brush *BKE_brush_first_search(struct Main *bmain, const eObjectMode ob_mo
   return NULL;
 }
 
-Brush *BKE_brush_copy(Main *bmain, const Brush *brush)
-{
-  return (Brush *)BKE_id_copy(bmain, &brush->id);
-}
-
 void BKE_brush_debug_print_state(Brush *br)
 {
   /* create a fake brush and set it to the defaults */
diff --git a/source/blender/blenkernel/intern/cachefile.c b/source/blender/blenkernel/intern/cachefile.c
index 65dcf3673d6..8abf5515645 100644
--- a/source/blender/blenkernel/intern/cachefile.c
+++ b/source/blender/blenkernel/intern/cachefile.c
@@ -254,11 +254,6 @@ void *BKE_cachefile_add(Main *bmain, const char *name)
   return cache_file;
 }
 
-CacheFile *BKE_cachefile_copy(Main *bmain, const CacheFile *cache_file)
-{
-  return (CacheFile *)BKE_id_copy(bmain, &cache_file->id);
-}
-
 void BKE_cachefile_reload(Depsgraph *depsgraph, CacheFile *cache_file)
 {
   /* To force reload, free the handle and tag depsgraph to load it again. */
diff --git a/source/blender/blenkernel/intern/camera.c b/source/blender/blenkernel/intern/camera.c
index 1183e359d93..d54bebeafb9 100644
--- a/source/blender/blenkernel/intern/camera.c
+++ b/source/blender/blenkernel/intern/camera.c
@@ -220,11 +220,6 @@ void *BKE_camera_add(Main *bmain, const char *name)
   return cam;
 }
 
-Camera *BKE_camera_copy(Main *bmain, const Camera *cam)
-{
-  return (Camera *)BKE_id_copy(bmain, &cam->id);
-}
-
 /* get the camera's dof value, takes the dof object into account */
 float BKE_camera_object_dof_distance(Object *ob)
 {
diff --git a/source/blender/blenkernel/intern/curve.c b/source/blender/blenkernel/intern/curve.c
index eb469f5400f..be82252159c 100644
--- a/source/blender/blenkernel/intern/curve.c
+++ b/source/blender/blenkernel/intern/curve.c
@@ -425,11 +425,6 @@ Curve *BKE_curve_add(Main *bmain, const char *name, int type)
   return cu;
 }
 
-Curve *BKE_curve_copy(Main *bmain, const Curve *cu)
-{
-  return (Curve *)BKE_id_copy(bmain, &cu->id);
-}
-
 /* Get list of nurbs from editnurbs structure */
 ListBase *BKE_curve_editNurbs_get(Curve *cu)
 {
diff --git a/source/blender/blenkernel/intern/gpencil.c b/source/blender/blenkernel/intern/gpencil.c
index f40cfba5077..31cd812f8df 100644
--- a/source/blender/blenkernel/intern/gpencil.c
+++ b/source/blender/blenkernel/intern/gpencil.c
@@ -972,18 +972,6 @@ bGPDlayer *BKE_gpencil_layer_duplicate(const bGPDlayer *gpl_src)
 }
 
 /**
- * Standard API to make a copy of GP data-block, separate from copying its data.
- *
- * \param bmain: Main pointer
- * \param gpd: Grease pencil data-block
- * \return Pointer to new data-block
- */
-bGPdata *BKE_gpencil_copy(Main *bmain, const bGPdata *gpd)
-{
-  return (bGPdata *)BKE_id_copy(bmain, &gpd->id);
-}
-
-/**
  * Make a copy of a given gpencil data-block.
  *
  * XXX: Should this be deprecated?
diff --git a/source/blender/blenkernel/intern/hair.c b/source/blender/blenkernel/intern/hair.c
index 5d995cbbb4d..3a35836d4d5 100644
--- a/source/blender/blenkernel/intern/hair.c
+++ b/source/blender/blenkernel/intern/hair.c
@@ -251,11 +251,6 @@ void *BKE_hair_add(Main *bmain, const char *name)
   return hair;
 }
 
-Hair *BKE_hair_copy(Main *bmain, const Hair *hair)
-{
-  return (Hair *)BKE_id_copy(bmain, &hair->id);
-}
-
 BoundBox *BKE_hair_boundbox_get(Object *ob)
 {
   BLI_assert(ob->type == OB_HAIR);
diff --git a/source/blender/blenkernel/intern/image.c b/source/blender/blenkernel/intern/image.c
index d1f29c39f63..29cf3cc0a8d 100644
--- a/source/blender/blenkernel/intern/image.c
+++ b/source/blender/blenkernel/intern/image.c
@@ -600,12 +600,6 @@ static void copy_image_packedfiles(ListBase *lb_dst, const ListBase *lb_src)
   }
 }
 
-/* empty image block, of similar type and filename */
-Image *BKE_image_copy(Main *bmain, const Image *ima)
-{
-  return (Image *)BKE_id_copy(bmain, &ima->id);
-}
-
 void BKE_image_merge(Main *bmain, Image *dest, Image *source)
 {
   /* sanity check */
diff --git a/source/blender/blenkernel/intern/key.c b/source/blender/blenkernel/intern/key.c
index a0c4405535a..b93adf43751 100644
--- a/source/blender/blenkernel/intern/key.c
+++ b/source/blender/blenkernel/intern/key.c
@@ -296,11 +296,6 @@ Key *BKE_key_add(Main *bmain, ID *id) /* common function */
   return key;
 }
 
-Key *BKE_key_copy(Main *bmain, const Key *key)
-{
-  return (Key *)BKE_id_copy(bmain, &key->id);
-}
-
 /* XXX TODO get rid of this! */
 Key *BKE_key_copy_nolib(Key *key)
 {
diff --git a/source/blender/blenkernel/intern/lattice.c b/source/blender/blenkernel/intern/lattice.c
index 950c08bf770..bb62e4c2495 100644
--- a/source/blender/blenkernel/intern/lattice.c
+++ b/source/blender/blenkernel/intern/lattice.c
@@ -401,11 +401,6 @@ Lattice *BKE_lattice_add(Main *bmain, const char *name)
   return lt;
 }
 
-Lattice *BKE_lattice_copy(Main *bmain, const Lattice *lt)
-{
-  return (Lattice *)BKE_id_copy(bmain, &lt->id);
-}
-
 bool object_deform_mball(Object *ob, ListBase *dispbase)
 {
   if (ob->parent && ob->parent->type == OB_LATTICE && ob->partype == PARSKEL) {
diff --git a/source/blender/blenkernel/intern/light.c b/source/blender/blenkernel/intern/light.c
index 74226c92681..c8abe296f59 100644
--- a/source/blender/blenkernel/intern/light.c
+++ b/source/blender/blenkernel/intern/light.c
@@ -220,11 +220,6 @@ Light *BKE_light_add(Main *bmain, const char *name)
   return la;
 }
 
-Light *BKE_light_copy(Main *bmain, const Light *la)
-{
-  return (Light *)BKE_id_copy(bmain, &la->id);
-}
-
 void BKE_light_eval(struct Depsgraph *depsgraph, Light *la)
 {
   DEG_debug_print_eval(depsgraph, __func__, la->id.name, la);
diff --git a/source/blender/blenkernel/intern/lightprobe.c b/source/blender/blenkernel/intern/lightprobe.c
index 2a355ede9d7..debd9706b5e 100644
--- a/source/blender/blenkernel/intern/lightprobe.c
+++ b/source/blender/blenkernel/intern/lightprobe.c
@@ -141,8 +141,3 @@ void *BKE_lightprobe_add(Main *bmain, const char *name)
 
   return probe;
 }
-
-LightProbe *BKE_lightprobe_copy(Main *bmain, const LightProbe *probe)
-{
-  return (LightProbe *)BKE_id_copy(bmain, &probe->id);
-}
diff --git a/source/blender/blenkernel/intern/linestyle.c b/source/blender/blenkernel/intern/linestyle.c
index eae7f49cfac..f32a62376ac 100644
--- a/source/blender/blenkernel/intern/linestyle.c
+++ b/source/blender/blenkernel/intern/linestyle.c
@@ -810,11 +810,6 @@ FreestyleLineStyle *BKE_linestyle_new(struct Main *bmain, const char *name)
   return linestyle;
 }
 
-FreestyleLineStyle *BKE_linestyle_copy(struct Main *bmain, const FreestyleLineStyle *linestyle)
-{
-  return (FreestyleLineStyle *)BKE_id_copy(bmain, &linestyle->id);
-}
-
 FreestyleLineStyle *BKE_linestyle_active_from_view_layer(ViewLayer *view_layer)
 {
   FreestyleConfig *config = &view_layer->freestyle_config;
diff --git a/source/blender/blenkernel/intern/mask.c b/source/blender/blenkernel/intern/mask.c
index ab69adf2643..2f71d1ad99f 100644
--- a/source/blender/blenkernel/intern/mask.c
+++ b/source/blender/blenkernel/intern/mask.c
@@ -1074,11 +1074,6 @@ Mask *BKE_mask_copy_nolib(Mask *mask)
   return mask_new;
 }
 
-Mask *BKE_mask_copy(Main *bmain, const Mask *mask)
-{
-  return (Mask *)BKE_id_copy(bmain, &mask->id);
-}
-
 void BKE_mask_point_free(MaskSplinePoint *point)
 {
   if (point->uw) {
diff --git a/source/blender/blenkernel/intern/material.c b/source/blender/blenkernel/intern/material.c
index db9fccbc443..70cb06185c9 100644
--- a/source/blender/blenkernel/intern/material.c
+++ b/source/blender/blenkernel/intern/material.c
@@ -317,11 +317,6 @@ Material *BKE_gpencil_material_add(Main *bmain, const char *name)
   return ma;
 }
 
-Material *BKE_material_copy(Main *bmain, const Material *ma)
-{
-  return (Material *)BKE_id_copy(bmain, &ma->id);
-}
-
 Material ***BKE_object_material_array_p(Object *ob)
 {
   if (ob->type == OB_MESH) {
diff --git a/source/blender/blenkernel/intern/mball.c b/source/blender/blenkernel/intern/mball.c
index 0829b1b5b57..84f07b7bc60 100644
--- a/source/blender/blenkernel/intern/mball.c
+++ b/source/blender/blenkernel/intern/mball.c
@@ -217,11 +217,6 @@ MetaBall *BKE_mball_add(Main *bmain, const char *name)
   return mb;
 }
 
-MetaBall *BKE_mball_copy(Main *bmain, const MetaBall *mb)
-{
-  return (MetaBall *)BKE_id_copy(bmain, &mb->id);
-}
-
 /* most simple meta-element adding function
  * don't do context manipulation here (rna uses) */
 MetaElem *BKE_mball_element_add(MetaBall *mb, const int type)
diff --git a/source/blender/blenkernel/intern/mesh.c b/source/blender/blenkernel/intern/mesh.c
index 16adc65c4f7..4486c9eb926 100644
--- a/source/blender/blenkernel/intern/mesh.c
+++ b/source/blender/blenkernel/intern/mesh.c
@@ -1017,11 +1017,6 @@ Mesh *BKE_mesh_copy_for_eval(struct Mesh *source, bool reference)
   return result;
 }
 
-Mesh *BKE_mesh_copy(Main *bmain, const Mesh *me)
-{
-  return (Mesh *)BKE_id_copy(bmain, &me->id);
-}
-
 BMesh *BKE_mesh_to_bmesh_ex(const Mesh *me,
                             const struct BMeshCreateParams *create_params,
                             const struct BMeshFromMeshParams *convert_params)
diff --git a/source/blender/blenkernel/intern/movieclip.c b/source/blender/blenkernel/intern/movieclip.c
index 861ea26f7fb..36f9e47421b 100644
--- a/source/blender/blenkernel/intern/movieclip.c
+++ b/source/blender/blenkernel/intern/movieclip.c
@@ -1918,11 +1918,6 @@ void BKE_movieclip_build_proxy_frame_for_ibuf(MovieClip *clip,
   }
 }
 
-MovieClip *BKE_movieclip_copy(Main *bmain, const MovieClip *clip)
-{
-  return (MovieClip *)BKE_id_copy(bmain, &clip->id);
-}
-
 float BKE_movieclip_remap_scene_to_clip_frame(const MovieClip *clip, float framenr)
 {
   return framenr - (float)clip->start_frame + 1.0f;
diff --git a/source/blender/blenkernel/intern/object.c b/source/blender/blenkernel/intern/object.c
index 676277dae8c..6ab47f1b1f8 100644
--- a/source/blender/blenkernel/intern/object.c
+++ b/source/blender/blenkernel/intern/object.c
@@ -360,9 +360,9 @@ static void object_make_local(Main *bmain, ID *id, const int flags)
       }
     }
     else {
-      Object *ob_new = BKE_object_copy(bmain, ob);
+      Object *ob_new = (Object *)BKE_id_copy(bmain, &ob->id);
+      id_us_min(&ob_new->id);
 
-      ob_new->id.us = 0;
       ob_new->proxy = ob_new->proxy_from = ob_new->proxy_group = NULL;
 
       /* setting newid is mandatory for complex make_lib_local logic... */
@@ -1786,19 +1786,6 @@ void BKE_object_transform_copy(Object *ob_tar, const Object *ob_src)
 }
 
 /**
- * Copy objects, will re-initialize cached simulation data.
- */
-Object *BKE_object_copy(Main *bmain, const Object *ob)
-{
-  Object *ob_copy = (Object *)BKE_id_copy(bmain, &ob->id);
-
-  /* We increase object user count when linking to Collections. */
-  id_us_min(&ob_copy->id);
-
-  return ob_copy;
-}
-
-/**
  * Perform deep-copy of object and its 'children' data-blocks (obdata, materials, actions, etc.).
  *
  * \param dupflag: Controls which sub-data are also duplicated
diff --git a/source/blender/blenkernel/intern/paint.c b/source/blender/blenkernel/intern/paint.c
index df4a78b8c5b..fd37ceed568 100644
--- a/source/blender/blenkernel/intern/paint.c
+++ b/source/blender/blenkernel/intern/paint.c
@@ -677,11 +677,6 @@ PaintCurve *BKE_paint_curve_add(Main *bmain, const char *name)
   return pc;
 }
 
-PaintCurve *BKE_paint_curve_copy(Main *bmain, const PaintCurve *pc)
-{
-  return (PaintCurve *)BKE_id_copy(bmain, &pc->id);
-}
-
 Palette *BKE_paint_palette(Paint *p)
 {
   return p ? p->palette : NULL;
@@ -739,11 +734,6 @@ Palette *BKE_palette_add(Main *bmain, const char *name)
   return palette;
 }
 
-Palette *BKE_palette_copy(Main *bmain, const Palette *palette)
-{
-  return (Palette *)BKE_id_copy(bmain, &palette->id);
-}
-
 PaletteColor *BKE_palette_color_add(Palette *palette)
 {
   PaletteColor *color = MEM_callocN(sizeof(*color), "Palette Color");
diff --git a/source/blender/blenkernel/intern/particle.c b/source/blender/blenkernel/intern/particle.c
index e984308b873..8d091767709 100644
--- a/source/blender/blenkernel/intern/particle.c
+++ b/source/blender/blenkernel/intern/particle.c
@@ -3907,11 +3907,6 @@ void BKE_particlesettings_twist_curve_init(ParticleSettings *part)
   part->twistcurve = cumap;
 }
 
-ParticleSettings *BKE_particlesettings_copy(Main *bmain, const ParticleSettings *part)
-{
-  return (ParticleSettings *)BKE_id_copy(bmain, &part->id);
-}
-
 /************************************************/
 /*          Textures                            */
 /************************************************/
diff --git a/source/blender/blenkernel/intern/pointcloud.c b/source/blender/blenkernel/intern/pointcloud.c
index 9f2e9efa8cb..a130117ded5 100644
--- a/source/blender/blenkernel/intern/pointcloud.c
+++ b/source/blender/blenkernel/intern/pointcloud.c
@@ -230,11 +230,6 @@ void *BKE_pointcloud_add_default(Main *bmain, const char *name)
   return pointcloud;
 }
 
-PointCloud *BKE_pointcloud_copy(Main *bmain, const PointCloud *pointcloud)
-{
-  return (PointCloud *)BKE_id_copy(bmain, &pointcloud->id);
-}
-
 BoundBox *BKE_pointcloud_boundbox_get(Object *ob)
 {
   BLI_assert(ob->type == OB_POINTCLOUD);
diff --git a/source/blender/blenkernel/intern/speaker.c b/source/blender/blenkernel/intern/speaker.c
index 8e1d0aae721..2f65442fd48 100644
--- a/source/blender/blenkernel/intern/speaker.c
+++ b/source/blender/blenkernel/intern/speaker.c
@@ -124,8 +124,3 @@ void *BKE_speaker_add(Main *bmain, const char *name)
 
   return spk;
 }
-
-Speaker *BKE_speaker_copy(Main *bmain, const Speaker *spk)
-{
-  return (Speaker *)BKE_id_copy(bmain, &spk->id);
-}
diff --git a/source/blender/blenkernel/intern/text.c b/source/blender/blenkernel/intern/text.c
index b8eabc29f39..84b5b526eff 100644
--- a/source/blender/blenkernel/intern/text.c
+++ b/source/blender/blenkernel/intern/text.c
@@ -516,11 +516,6 @@ Text *BKE_text_load(Main *bmain, const char *file, const char *relpath)
   return BKE_text_load_ex(bmain, file, relpath, false);
 }
 
-Text *BKE_text_copy(Main *bmain, const Text *ta)
-{
-  return (Text *)BKE_id_copy(bmain, &ta->id);
-}
-
 void BKE_text_clear(Text *text) /* called directly from rna */
 {
   txt_sel_all(text);
diff --git a/source/blender/blenkernel/intern/texture.c b/source/blender/blenkernel/intern/texture.c
index 8c46b192b0b..c2325eeeab0 100644
--- a/source/blender/blenkernel/intern/texture.c
+++ b/source/blender/blenkernel/intern/texture.c
@@ -455,13 +455,6 @@ MTex *BKE_texture_mtex_add_id(ID *id, int slot)
 
 /* ------------------------------------------------------------------------- */
 
-Tex *BKE_texture_copy(Main *bmain, const Tex *tex)
-{
-  return (Tex *)BKE_id_copy(bmain, &tex->id);
-}
-
-/* ------------------------------------------------------------------------- */
-
 Tex *give_current_linestyle_texture(FreestyleLineStyle *linestyle)
 {
   MTex *mtex = NULL;
diff --git a/source/blender/blenkernel/intern/volume.cc b/source/blender/blenkernel/intern/volume.cc
index f7c7a2ec323..382787fd0f9 100644
--- a/source/blender/blenkernel/intern/volume.cc
+++ b/source/blender/blenkernel/intern/volume.cc
@@ -610,11 +610,6 @@ void *BKE_volume_add(Main *bmain, const char *name)
   return volume;
 }
 
-Volume *BKE_volume_copy(Main *bmain, const Volume *volume)
-{
-  return (Volume *)BKE_id_copy(bmain, &volume->id);
-}
-
 /* Sequence */
 
 static int volume_sequence_frame(const Depsgraph *depsgraph, const Volume *volume)