include/linux/livepatch.h

1 /* SPDX-License-Identifier: GPL-2.0-or-later */
3  * livepatch.h - Kernel Live Patching Core
21 #define KLP_UNDEFINED	-1
26  * struct klp_func - function structure for live patching
83  * struct klp_callbacks - pre/post live-(un)patch callback structure
88  * @post_unpatch_enabled:	flag indicating if post-unpatch callback
91  * All callbacks are optional.  Only the pre-patch callback, if provided,
93  * patch for any reason, including a non-zero error status returned from
94  * the pre-patch callback, no further callbacks will be executed.
105  * struct klp_object - kernel object structure for live patching
133  * struct klp_state - state of the system modified by the livepatch
134  * @id:		system state identifier (non-zero)
145  * struct klp_patch - patch structure for live patching
146  * @mod:	reference to the live patch module
155  * @free_work:	patch cleanup from workqueue-context
176 	for (obj = patch->objs; obj->funcs || obj->name; obj++)
179 	list_for_each_entry_safe(obj, tmp_obj, &patch->obj_list, node)
182 	list_for_each_entry(obj, &patch->obj_list, node)
185 	for (func = obj->funcs; \
186 	     func->old_name || func->new_func || func->old_sympos; \
190 	list_for_each_entry_safe(func, tmp_func, &obj->func_list, node)
193 	list_for_each_entry(func, &obj->func_list, node)