Lines Matching refs:patch
101 static struct klp_object *klp_find_object(struct klp_patch *patch, in klp_find_object() argument
106 klp_for_each_object(patch, obj) { in klp_find_object()
330 static int __klp_disable_patch(struct klp_patch *patch);
335 struct klp_patch *patch; in enabled_store() local
343 patch = container_of(kobj, struct klp_patch, kobj); in enabled_store()
347 if (patch->enabled == enabled) { in enabled_store()
360 if (patch == klp_transition_patch) in enabled_store()
363 ret = __klp_disable_patch(patch); in enabled_store()
378 struct klp_patch *patch; in enabled_show() local
380 patch = container_of(kobj, struct klp_patch, kobj); in enabled_show()
381 return snprintf(buf, PAGE_SIZE-1, "%d\n", patch->enabled); in enabled_show()
387 struct klp_patch *patch; in transition_show() local
389 patch = container_of(kobj, struct klp_patch, kobj); in transition_show()
391 patch == klp_transition_patch); in transition_show()
397 struct klp_patch *patch; in force_store() local
410 patch = container_of(kobj, struct klp_patch, kobj); in force_store()
411 if (patch != klp_transition_patch) { in force_store()
442 static void klp_init_object_early(struct klp_patch *patch,
446 struct klp_patch *patch) in klp_alloc_object_dynamic() argument
462 klp_init_object_early(patch, obj); in klp_alloc_object_dynamic()
502 static int klp_add_object_nops(struct klp_patch *patch, in klp_add_object_nops() argument
508 obj = klp_find_object(patch, old_obj); in klp_add_object_nops()
511 obj = klp_alloc_object_dynamic(old_obj->name, patch); in klp_add_object_nops()
534 static int klp_add_nops(struct klp_patch *patch) in klp_add_nops() argument
543 err = klp_add_object_nops(patch, old_obj); in klp_add_nops()
554 struct klp_patch *patch; in klp_kobj_release_patch() local
556 patch = container_of(kobj, struct klp_patch, kobj); in klp_kobj_release_patch()
557 complete(&patch->finish); in klp_kobj_release_patch()
624 static void __klp_free_objects(struct klp_patch *patch, bool nops_only) in __klp_free_objects() argument
628 klp_for_each_object_safe(patch, obj, tmp_obj) { in __klp_free_objects()
639 static void klp_free_objects(struct klp_patch *patch) in klp_free_objects() argument
641 __klp_free_objects(patch, false); in klp_free_objects()
644 static void klp_free_objects_dynamic(struct klp_patch *patch) in klp_free_objects_dynamic() argument
646 __klp_free_objects(patch, true); in klp_free_objects_dynamic()
656 static void klp_free_patch_start(struct klp_patch *patch) in klp_free_patch_start() argument
658 if (!list_empty(&patch->list)) in klp_free_patch_start()
659 list_del(&patch->list); in klp_free_patch_start()
661 klp_free_objects(patch); in klp_free_patch_start()
672 static void klp_free_patch_finish(struct klp_patch *patch) in klp_free_patch_finish() argument
680 kobject_put(&patch->kobj); in klp_free_patch_finish()
681 wait_for_completion(&patch->finish); in klp_free_patch_finish()
684 if (!patch->forced) in klp_free_patch_finish()
685 module_put(patch->mod); in klp_free_patch_finish()
695 struct klp_patch *patch = in klp_free_patch_work_fn() local
698 klp_free_patch_finish(patch); in klp_free_patch_work_fn()
701 void klp_free_patch_async(struct klp_patch *patch) in klp_free_patch_async() argument
703 klp_free_patch_start(patch); in klp_free_patch_async()
704 schedule_work(&patch->free_work); in klp_free_patch_async()
747 static int klp_apply_object_relocs(struct klp_patch *patch, in klp_apply_object_relocs() argument
751 struct klp_modinfo *info = patch->mod->klp_info; in klp_apply_object_relocs()
759 ret = klp_apply_section_relocs(patch->mod, info->sechdrs, in klp_apply_object_relocs()
761 patch->mod->core_kallsyms.strtab, in klp_apply_object_relocs()
771 static int klp_init_object_loaded(struct klp_patch *patch, in klp_init_object_loaded() argument
784 ret = klp_apply_object_relocs(patch, obj); in klp_init_object_loaded()
819 static int klp_init_object(struct klp_patch *patch, struct klp_object *obj) in klp_init_object() argument
834 ret = kobject_add(&obj->kobj, &patch->kobj, "%s", name); in klp_init_object()
845 ret = klp_init_object_loaded(patch, obj); in klp_init_object()
857 static void klp_init_object_early(struct klp_patch *patch, in klp_init_object_early() argument
862 list_add_tail(&obj->node, &patch->obj_list); in klp_init_object_early()
865 static int klp_init_patch_early(struct klp_patch *patch) in klp_init_patch_early() argument
870 if (!patch->objs) in klp_init_patch_early()
873 INIT_LIST_HEAD(&patch->list); in klp_init_patch_early()
874 INIT_LIST_HEAD(&patch->obj_list); in klp_init_patch_early()
875 kobject_init(&patch->kobj, &klp_ktype_patch); in klp_init_patch_early()
876 patch->enabled = false; in klp_init_patch_early()
877 patch->forced = false; in klp_init_patch_early()
878 INIT_WORK(&patch->free_work, klp_free_patch_work_fn); in klp_init_patch_early()
879 init_completion(&patch->finish); in klp_init_patch_early()
881 klp_for_each_object_static(patch, obj) { in klp_init_patch_early()
885 klp_init_object_early(patch, obj); in klp_init_patch_early()
892 if (!try_module_get(patch->mod)) in klp_init_patch_early()
898 static int klp_init_patch(struct klp_patch *patch) in klp_init_patch() argument
903 ret = kobject_add(&patch->kobj, klp_root_kobj, "%s", patch->mod->name); in klp_init_patch()
907 if (patch->replace) { in klp_init_patch()
908 ret = klp_add_nops(patch); in klp_init_patch()
913 klp_for_each_object(patch, obj) { in klp_init_patch()
914 ret = klp_init_object(patch, obj); in klp_init_patch()
919 list_add_tail(&patch->list, &klp_patches); in klp_init_patch()
924 static int __klp_disable_patch(struct klp_patch *patch) in __klp_disable_patch() argument
928 if (WARN_ON(!patch->enabled)) in __klp_disable_patch()
934 klp_init_transition(patch, KLP_UNPATCHED); in __klp_disable_patch()
936 klp_for_each_object(patch, obj) in __klp_disable_patch()
950 patch->enabled = false; in __klp_disable_patch()
956 static int __klp_enable_patch(struct klp_patch *patch) in __klp_enable_patch() argument
964 if (WARN_ON(patch->enabled)) in __klp_enable_patch()
967 pr_notice("enabling patch '%s'\n", patch->mod->name); in __klp_enable_patch()
969 klp_init_transition(patch, KLP_PATCHED); in __klp_enable_patch()
980 klp_for_each_object(patch, obj) { in __klp_enable_patch()
1000 patch->enabled = true; in __klp_enable_patch()
1005 pr_warn("failed to enable patch '%s'\n", patch->mod->name); in __klp_enable_patch()
1024 int klp_enable_patch(struct klp_patch *patch) in klp_enable_patch() argument
1028 if (!patch || !patch->mod) in klp_enable_patch()
1031 if (!is_livepatch_module(patch->mod)) { in klp_enable_patch()
1033 patch->mod->name); in klp_enable_patch()
1047 if (!klp_is_patch_compatible(patch)) { in klp_enable_patch()
1049 patch->mod->name); in klp_enable_patch()
1054 ret = klp_init_patch_early(patch); in klp_enable_patch()
1060 ret = klp_init_patch(patch); in klp_enable_patch()
1064 ret = __klp_enable_patch(patch); in klp_enable_patch()
1073 klp_free_patch_start(patch); in klp_enable_patch()
1077 klp_free_patch_finish(patch); in klp_enable_patch()
1141 struct klp_patch *patch; in klp_cleanup_module_patches_limited() local
1144 klp_for_each_patch(patch) { in klp_cleanup_module_patches_limited()
1145 if (patch == limit) in klp_cleanup_module_patches_limited()
1148 klp_for_each_object(patch, obj) { in klp_cleanup_module_patches_limited()
1152 if (patch != klp_transition_patch) in klp_cleanup_module_patches_limited()
1156 patch->mod->name, obj->mod->name); in klp_cleanup_module_patches_limited()
1170 struct klp_patch *patch; in klp_module_coming() local
1189 klp_for_each_patch(patch) { in klp_module_coming()
1190 klp_for_each_object(patch, obj) { in klp_module_coming()
1196 ret = klp_init_object_loaded(patch, obj); in klp_module_coming()
1199 patch->mod->name, obj->mod->name, ret); in klp_module_coming()
1204 patch->mod->name, obj->mod->name); in klp_module_coming()
1216 patch->mod->name, obj->mod->name, ret); in klp_module_coming()
1222 if (patch != klp_transition_patch) in klp_module_coming()
1239 patch->mod->name, obj->mod->name, obj->mod->name); in klp_module_coming()
1242 klp_cleanup_module_patches_limited(mod, patch); in klp_module_coming()