/*
* dhcpcd - DHCP client daemon
* Copyright (c) 2006-2013 Roy Marples <roy@marples.name>
* All rights reserved
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS 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 ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*/
#ifndef COMMON_H
#define COMMON_H
#include <sys/time.h>
#include <stdio.h>
#include "config.h"
#include "defs.h"
#ifndef HOSTNAME_MAX_LEN
#define HOSTNAME_MAX_LEN 250 /* 255 - 3 (FQDN) - 2 (DNS enc) */
#endif
#define UNCONST(a) ((void *)(unsigned long)(const void *)(a))
#define STRINGIFY(a) #a
#define TOSTRING(a) STRINGIFY(a)
#define timeval_to_double(tv) ((tv)->tv_sec * 1.0 + (tv)->tv_usec * 1.0e-6)
#define timernorm(tv) do { \
while ((tv)->tv_usec >= 1000000) { \
(tv)->tv_sec++; \
(tv)->tv_usec -= 1000000; \
} \
} while (0 /* CONSTCOND */);
#define tv_to_ms(ms, tv) do { \
ms = (tv)->tv_sec * 1000; \
ms += (tv)->tv_usec / 1000; \
} while (0 /* CONSTCOND */);
#define ms_to_tv(tv, ms) do { \
(tv)->tv_sec = ms / 1000; \
(tv)->tv_usec = (ms - ((tv)->tv_sec * 1000)) * 1000; \
} while (0 /* CONSTCOND */);
#ifndef TIMEVAL_TO_TIMESPEC
#define TIMEVAL_TO_TIMESPEC(tv, ts) do { \
(ts)->tv_sec = (tv)->tv_sec; \
(ts)->tv_nsec = (tv)->tv_usec * 1000; \
} while (0 /* CONSTCOND */)
#endif
#if __GNUC__ > 2 || defined(__INTEL_COMPILER)
# ifndef __dead
# define __dead __attribute__((__noreturn__))
# endif
# ifndef __packed
# define __packed __attribute__((__packed__))
# endif
# ifndef __unused
# define __unused __attribute__((__unused__))
# endif
#else
# ifndef __dead
# define __dead
# endif
# ifndef __packed
# define __packed
# endif
# ifndef __unused
# define __unused
# endif
#endif
/* We don't really need this as our supported systems define __restrict
* automatically for us, but it is here for completeness. */
#ifndef __restrict
# if defined(__lint__)
# define __restrict
# elif __STDC_VERSION__ >= 199901L
# define __restrict restrict
# elif !(2 < __GNUC__ || (2 == __GNU_C && 95 <= __GNUC_VERSION__))
# define __restrict
# endif
#endif
int set_cloexec(int);
int set_nonblock(int);
char *get_line(FILE * __restrict);
const char *get_hostname(int);
extern int clock_monotonic;
int get_monotonic(struct timeval *);
ssize_t setvar(char ***, const char *, const char *, const char *);
ssize_t setvard(char ***, const char *, const char *, int);
time_t uptime(void);
int writepid(int, pid_t);
#endif
