48 lines
1,002 B
C
48 lines
1,002 B
C
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// SPDX-License-Identifier: GPL-2.0-or-later
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/* common.h
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*
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* Useful shared functions
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*
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* Copyright Red Hat
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* Author: David Gibson <david@gibson.dropbear.id.au>
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*/
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#ifndef REUSEADDR_COMMON_H
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#define REUSEADDR_COMMON_H
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#include <stdarg.h>
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#include <stdbool.h>
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#include <stdio.h>
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#include <stdlib.h>
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static inline void die(const char *fmt, ...)
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{
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va_list ap;
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va_start(ap, fmt);
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(void)vfprintf(stderr, fmt, ap);
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va_end(ap);
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exit(EXIT_FAILURE);
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}
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#if __BYTE_ORDER == __BIG_ENDIAN
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#define htons_constant(x) (x)
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#define htonl_constant(x) (x)
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#else
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#define htons_constant(x) (__bswap_constant_16(x))
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#define htonl_constant(x) (__bswap_constant_32(x))
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#endif
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#define SOCKADDR_INIT(addr, port) \
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{ \
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.sin_family = AF_INET, \
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.sin_addr = { .s_addr = htonl_constant(addr) }, \
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.sin_port = htons_constant(port), \
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}
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int sock_reuseaddr(void);
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void send_token(int s, long token);
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bool recv_token(int s, long token);
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#endif /* REUSEADDR_COMMON_H */
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