128 static int seccomp_check_filter(struct sock_filter *filter, unsigned int flen)  in seccomp_check_filter()  argument
132 		struct sock_filter *ftest = &filter[pc];  in seccomp_check_filter()
206 	struct seccomp_filter *f = ACCESS_ONCE(current->seccomp.filter);  in seccomp_run_filters()
295 		     is_ancestor(thread->seccomp.filter,  in seccomp_can_sync_threads()
296 				 caller->seccomp.filter)))  in seccomp_can_sync_threads()
340 		smp_store_release(&thread->seccomp.filter,  in seccomp_sync_threads()
341 				  caller->seccomp.filter);  in seccomp_sync_threads()
371 	struct seccomp_filter *filter;  in seccomp_prepare_filter()  local
380 	for (filter = current->seccomp.filter; filter; filter = filter->prev)  in seccomp_prepare_filter()
381 		total_insns += filter->len + 4;  /* include a 4 instr penalty */  in seccomp_prepare_filter()
397 	filter = kzalloc(sizeof(struct seccomp_filter) + fp_size,  in seccomp_prepare_filter()
399 	if (!filter)  in seccomp_prepare_filter()
401 	atomic_set(&filter->usage, 1);  in seccomp_prepare_filter()
402 	filter->len = fprog->len;  in seccomp_prepare_filter()
406 	if (copy_from_user(filter->insns, fprog->filter, fp_size))  in seccomp_prepare_filter()
410 	ret = sk_chk_filter(filter->insns, filter->len);  in seccomp_prepare_filter()
415 	ret = seccomp_check_filter(filter->insns, filter->len);  in seccomp_prepare_filter()
419 	return filter;  in seccomp_prepare_filter()
422 	kfree(filter);  in seccomp_prepare_filter()
436 	struct seccomp_filter *filter = ERR_PTR(-EFAULT);  in seccomp_prepare_user_filter()  local
444 		fprog.filter = compat_ptr(fprog32.filter);  in seccomp_prepare_user_filter()
449 	filter = seccomp_prepare_filter(&fprog);  in seccomp_prepare_user_filter()
451 	return filter;  in seccomp_prepare_user_filter()
464 				  struct seccomp_filter *filter)  in seccomp_attach_filter()  argument
472 	total_insns = filter->len;  in seccomp_attach_filter()
473 	for (walker = current->seccomp.filter; walker; walker = walker->prev)  in seccomp_attach_filter()
491 	filter->prev = current->seccomp.filter;  in seccomp_attach_filter()
492 	current->seccomp.filter = filter;  in seccomp_attach_filter()
504 	struct seccomp_filter *orig = tsk->seccomp.filter;  in get_seccomp_filter()
511 static inline void seccomp_filter_free(struct seccomp_filter *filter)  in seccomp_filter_free()  argument
513 	if (filter) {  in seccomp_filter_free()
514 		kfree(filter);  in seccomp_filter_free()
521 	struct seccomp_filter *orig = tsk->seccomp.filter;  in put_seccomp_filter()
711 				    const char __user *filter)  in seccomp_set_mode_filter()  argument
722 	prepared = seccomp_prepare_user_filter(filter);  in seccomp_set_mode_filter()
756 					   const char __user *filter)  in seccomp_set_mode_filter()  argument
791 long prctl_set_seccomp(unsigned long seccomp_mode, char __user *filter)  in prctl_set_seccomp()  argument
808 		uargs = filter;  in prctl_set_seccomp()