108 static int seccomp_check_filter(struct sock_filter *filter, unsigned int flen)  in seccomp_check_filter()  argument
112 		struct sock_filter *ftest = &filter[pc];  in seccomp_check_filter()
195 			READ_ONCE(current->seccomp.filter);  in seccomp_run_filters()
293 		     is_ancestor(thread->seccomp.filter,  in seccomp_can_sync_threads()
294 				 caller->seccomp.filter)))  in seccomp_can_sync_threads()
338 		smp_store_release(&thread->seccomp.filter,  in seccomp_sync_threads()
339 				  caller->seccomp.filter);  in seccomp_sync_threads()
417 	struct seccomp_filter *filter = ERR_PTR(-EFAULT);  in seccomp_prepare_user_filter()  local
425 		fprog.filter = compat_ptr(fprog32.filter);  in seccomp_prepare_user_filter()
430 	filter = seccomp_prepare_filter(&fprog);  in seccomp_prepare_user_filter()
432 	return filter;  in seccomp_prepare_user_filter()
445 				  struct seccomp_filter *filter)  in seccomp_attach_filter()  argument
453 	total_insns = filter->prog->len;  in seccomp_attach_filter()
454 	for (walker = current->seccomp.filter; walker; walker = walker->prev)  in seccomp_attach_filter()
470 		filter->log = true;  in seccomp_attach_filter()
476 	filter->prev = current->seccomp.filter;  in seccomp_attach_filter()
477 	current->seccomp.filter = filter;  in seccomp_attach_filter()
486 static void __get_seccomp_filter(struct seccomp_filter *filter)  in __get_seccomp_filter()  argument
489 	refcount_inc(&filter->usage);  in __get_seccomp_filter()
495 	struct seccomp_filter *orig = tsk->seccomp.filter;  in get_seccomp_filter()
501 static inline void seccomp_filter_free(struct seccomp_filter *filter)  in seccomp_filter_free()  argument
503 	if (filter) {  in seccomp_filter_free()
504 		bpf_prog_destroy(filter->prog);  in seccomp_filter_free()
505 		kfree(filter);  in seccomp_filter_free()
522 	__put_seccomp_filter(tsk->seccomp.filter);  in put_seccomp_filter()
851 				    const char __user *filter)  in seccomp_set_mode_filter()  argument
862 	prepared = seccomp_prepare_user_filter(filter);  in seccomp_set_mode_filter()
896 					   const char __user *filter)  in seccomp_set_mode_filter()  argument
959 long prctl_set_seccomp(unsigned long seccomp_mode, char __user *filter)  in prctl_set_seccomp()  argument
976 		uargs = filter;  in prctl_set_seccomp()
990 	struct seccomp_filter *orig, *filter;  in get_nth_filter()  local
1004 	orig = task->seccomp.filter;  in get_nth_filter()
1009 	for (filter = orig; filter; filter = filter->prev)  in get_nth_filter()
1013 		filter = ERR_PTR(-ENOENT);  in get_nth_filter()
1018 	for (filter = orig; filter && count > 1; filter = filter->prev)  in get_nth_filter()
1021 	if (WARN_ON(count != 1 || !filter)) {  in get_nth_filter()
1022 		filter = ERR_PTR(-ENOENT);  in get_nth_filter()
1026 	__get_seccomp_filter(filter);  in get_nth_filter()
1030 	return filter;  in get_nth_filter()
1036 	struct seccomp_filter *filter;  in seccomp_get_filter()  local
1045 	filter = get_nth_filter(task, filter_off);  in seccomp_get_filter()
1046 	if (IS_ERR(filter))  in seccomp_get_filter()
1047 		return PTR_ERR(filter);  in seccomp_get_filter()
1049 	fprog = filter->prog->orig_prog;  in seccomp_get_filter()
1063 	if (copy_to_user(data, fprog->filter, bpf_classic_proglen(fprog)))  in seccomp_get_filter()
1067 	__put_seccomp_filter(filter);  in seccomp_get_filter()
1075 	struct seccomp_filter *filter;  in seccomp_get_metadata()  local
1091 	filter = get_nth_filter(task, kmd.filter_off);  in seccomp_get_metadata()
1092 	if (IS_ERR(filter))  in seccomp_get_metadata()
1093 		return PTR_ERR(filter);  in seccomp_get_metadata()
1095 	if (filter->log)  in seccomp_get_metadata()
1102 	__put_seccomp_filter(filter);  in seccomp_get_metadata()