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// SPDX-License-Identifier: GPL-2.0-or-later
/* common.h
*
* Useful shared functions
*
* Copyright Red Hat
* Author: David Gibson <david@gibson.dropbear.id.au>
*/
#ifndef REUSEADDR_COMMON_H
#define REUSEADDR_COMMON_H
#include <stdarg.h>
#include <stdbool.h>
#include <stdio.h>
#include <stdlib.h>
static inline void die(const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
(void)vfprintf(stderr, fmt, ap);
va_end(ap);
exit(EXIT_FAILURE);
}
#if __BYTE_ORDER == __BIG_ENDIAN
#define htons_constant(x) (x)
#define htonl_constant(x) (x)
#else
#define htons_constant(x) (__bswap_constant_16(x))
#define htonl_constant(x) (__bswap_constant_32(x))
#endif
#define SOCKADDR_INIT(addr, port) \
{ \
.sin_family = AF_INET, \
.sin_addr = { .s_addr = htonl_constant(addr) }, \
.sin_port = htons_constant(port), \
}
int sock_reuseaddr(void);
void send_token(int s, long token);
bool recv_token(int s, long token);
#endif /* REUSEADDR_COMMON_H */
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