/*
* dhcpcd - DHCP client daemon
* Copyright 2006-2009 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
/* string.h pulls in features.h so the below define checks work */
#include <sys/types.h>
#include <sys/time.h>
#include <stdint.h>
#include <stdio.h>
#include <string.h>
#define UNCONST(a) ((void *)(unsigned long)(const void *)(a))
#define timeval_to_double(tv) ((tv)->tv_sec * 1.0 + (tv)->tv_usec * 1.0e-6)
#define timernorm(tvp) \
do { \
while ((tvp)->tv_usec >= 1000000) { \
(tvp)->tv_sec++; \
(tvp)->tv_usec -= 1000000; \
} \
} while (0 /* CONSTCOND */);
#if __GNUC__ > 2 || defined(__INTEL_COMPILER)
# define _noreturn __attribute__((__noreturn__))
# define _packed __attribute__((__packed__))
# define _unused __attribute__((__unused__))
#else
# define _noreturn
# define _packed
# define _unused
#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
#ifndef HAVE_ARC4RANDOM
# ifdef __GLIBC__
uint32_t arc4random(void);
#else
# define HAVE_ARC4RANDOM
# endif
#endif
#ifndef HAVE_STRLCPY
# define HAVE_STRLCPY 1
#endif
/* Only GLIBC doesn't support strlcpy */
#ifdef __GLIBC__
# if !defined(__UCLIBC__) && !defined (__dietlibc__)
# undef HAVE_STRLCPY
size_t strlcpy(char *, const char *, size_t);
# endif
#endif
#ifndef HAVE_CLOSEFROM
# if defined(__NetBSD__) || defined(__OpenBSD__)
# define HAVE_CLOSEFROM 1
# endif
#endif
#ifndef HAVE_CLOSEFROM
int closefrom(int);
#endif
int set_cloexec(int);
int set_nonblock(int);
char *get_line(FILE * __restrict);
extern int clock_monotonic;
int get_monotonic(struct timeval *);
time_t uptime(void);
int writepid(int, pid_t);
void *xrealloc(void *, size_t);
void *xmalloc(size_t);
void *xzalloc(size_t);
char *xstrdup(const char *);
#endif
