lib/posix/options/mlock.c

/*
 * Copyright (c) 2024, Tenstorrent AI ULC
 *
 * SPDX-License-Identifier: Apache-2.0
 */

#include <stddef.h>

#include <zephyr/kernel.h>
#include <zephyr/posix/sys/mman.h>

#include <zephyr/kernel/mm/demand_paging.h>

int mlock(const void *addr, size_t len)
{
	if (IS_ENABLED(CONFIG_DEMAND_PAGING)) {
		void *const _addr = (void *)addr;

		k_mem_pin(_addr, len);

		return 0;
	}

	errno = ENOTSUP;
	return -1;
}

int munlock(const void *addr, size_t len)
{
	if (IS_ENABLED(CONFIG_DEMAND_PAGING)) {
		void *const _addr = (void *)addr;

		k_mem_unpin(_addr, len);

		return 0;
	}

	errno = ENOTSUP;
	return -1;
}