/*
 * Copyright (C) 2022 - 2026, Stephan Mueller <smueller@chronox.de>
 *
 * License: see LICENSE file in root directory
 *
 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESS OR IMPLIED
 * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE, ALL OF
 * WHICH ARE HEREBY DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT
 * OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR
 * BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
 * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE
 * USE OF THIS SOFTWARE, EVEN IF NOT ADVISED OF THE POSSIBILITY OF SUCH
 * DAMAGE.
 */

#ifndef LINUX_SUPPORT_H
#define LINUX_SUPPORT_H

#include "config.h"
#include <assert.h>
#include <stdlib.h>
#include <string.h>

#ifdef __cplusplus
extern "C" {
#endif

#ifdef ESDM_LINUX
int linux_isolate_namespace(void);
int linux_isolate_namespace_prefork(void);
int linux_personalization_string(char **ptr, size_t *length);
#else
static inline int linux_isolate_namespace(void)
{
	return 0;
}
static inline int linux_isolate_namespace_prefork(void)
{
	return 0;
}
static inline int linux_personalization_string(char **ptr, size_t *length)
{
	static const char *personalization = "ESDM";

	assert(*ptr == NULL);
	assert(*length == 0);

	*length = strlen(personalization);
	*ptr = strndup(personalization, *length);
	if (!*ptr)
		return -errno;

	return 0;
}
#endif

#ifdef __cplusplus
}
#endif

#endif /* LINUX_SUPPORT_H */
