// SPDX-License-Identifier: BSD-3-Clause
/* Copyright 2016-2019, Intel Corporation */

/*
 * librpmem.c -- entry points for librpmem
 */

#include <stdio.h>
#include <stdint.h>

#include "librpmem.h"

#include "rpmem.h"
#include "rpmem_common.h"
#include "rpmem_util.h"
#include "rpmem_fip.h"
#include "util.h"
#include "out.h"

/*
 * librpmem_init -- load-time initialization for librpmem
 *
 * Called automatically by the run-time loader.
 */
ATTR_CONSTRUCTOR
void
librpmem_init(void)
{
	util_init();
	out_init(RPMEM_LOG_PREFIX, RPMEM_LOG_LEVEL_VAR, RPMEM_LOG_FILE_VAR,
			RPMEM_MAJOR_VERSION, RPMEM_MINOR_VERSION);
	LOG(3, NULL);
	rpmem_util_cmds_init();

	rpmem_util_get_env_max_nlanes(&Rpmem_max_nlanes);
	rpmem_util_get_env_wq_size(&Rpmem_wq_size);
}

/*
 * librpmem_fini -- librpmem cleanup routine
 *
 * Called automatically when the process terminates.
 */
ATTR_DESTRUCTOR
void
librpmem_fini(void)
{
	LOG(3, NULL);
	rpmem_util_cmds_fini();
	out_fini();
}

/*
 * rpmem_check_version -- see if library meets application version requirements
 */
const char *
rpmem_check_version(unsigned major_required, unsigned minor_required)
{
	LOG(3, "major_required %u minor_required %u",
			major_required, minor_required);

	if (major_required != RPMEM_MAJOR_VERSION) {
		ERR("librpmem major version mismatch (need %u, found %u)",
			major_required, RPMEM_MAJOR_VERSION);
		return out_get_errormsg();
	}

	if (minor_required > RPMEM_MINOR_VERSION) {
		ERR("librpmem minor version mismatch (need %u, found %u)",
			minor_required, RPMEM_MINOR_VERSION);
		return out_get_errormsg();
	}

	return NULL;
}

/*
 * rpmem_errormsg -- return the last error message
 */
const char *
rpmem_errormsg(void)
{
	return out_get_errormsg();
}