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/* SPDX-License-Identifier: BSD-2-Clause */
/*
* dhcpcd - DHCP client daemon
* Copyright (c) 2006-2021 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/param.h>
#include <sys/time.h>
#include <sys/types.h>
#include <stdint.h>
#include <stdio.h>
/* Define eloop queues here, as other apps share eloop.h */
#define ELOOP_DHCPCD 1 /* default queue */
#define ELOOP_DHCP 2
#define ELOOP_ARP 3
#define ELOOP_IPV4LL 4
#define ELOOP_IPV6 5
#define ELOOP_IPV6ND 6
#define ELOOP_IPV6RA_EXPIRE 7
#define ELOOP_DHCP6 8
#define ELOOP_IF 9
#ifndef HOSTNAME_MAX_LEN
#define HOSTNAME_MAX_LEN 250 /* 255 - 3 (FQDN) - 2 (DNS enc) */
#endif
#ifndef MIN
#define MIN(a,b) ((/*CONSTCOND*/(a)<(b))?(a):(b))
#define MAX(a,b) ((/*CONSTCOND*/(a)>(b))?(a):(b))
#endif
#define UNCONST(a) ((void *)(unsigned long)(const void *)(a))
#define STRINGIFY(a) #a
#define TOSTRING(a) STRINGIFY(a)
#define UNUSED(a) (void)(a)
#define ROUNDUP4(a) (1 + (((a) - 1) | 3))
#define ROUNDUP8(a) (1 + (((a) - 1) | 7))
/* Some systems don't define timespec macros */
#ifndef timespecclear
#define timespecclear(tsp) (tsp)->tv_sec = (time_t)((tsp)->tv_nsec = 0L)
#define timespecisset(tsp) ((tsp)->tv_sec || (tsp)->tv_nsec)
#endif
#if __GNUC__ > 2 || defined(__INTEL_COMPILER)
# ifndef __packed
# define __packed __attribute__((__packed__))
# endif
# ifndef __unused
# define __unused __attribute__((__unused__))
# endif
#else
# ifndef __packed
# define __packed
# endif
# ifndef __unused
# define __unused
# endif
#endif
/* Needed for rbtree(3) compat */
#ifndef __RCSID
#define __RCSID(a)
#endif
#ifndef __predict_false
# if __GNUC__ > 2
# define __predict_true(exp) __builtin_expect((exp) != 0, 1)
# define __predict_false(exp) __builtin_expect((exp) != 0, 0)
#else
# define __predict_true(exp) (exp)
# define __predict_false(exp) (exp)
# endif
#endif
#ifndef __BEGIN_DECLS
# if defined(__cplusplus)
# define __BEGIN_DECLS extern "C" {
# define __END_DECLS };
# else /* __BEGIN_DECLS */
# define __BEGIN_DECLS
# define __END_DECLS
# endif /* __BEGIN_DECLS */
#endif /* __BEGIN_DECLS */
#ifndef __fallthrough
# if __GNUC__ >= 7
# define __fallthrough __attribute__((fallthrough))
# else
# define __fallthrough
# endif
#endif
/*
* Compile Time Assertion.
*/
#ifndef __CTASSERT
# ifdef __COUNTER__
# define __CTASSERT(x) __CTASSERT0(x, __ctassert, __COUNTER__)
# else
# define __CTASSERT(x) __CTASSERT99(x, __INCLUDE_LEVEL__, __LINE__)
# define __CTASSERT99(x, a, b) __CTASSERT0(x, __CONCAT(__ctassert,a), \
__CONCAT(_,b))
# endif
# define __CTASSERT0(x, y, z) __CTASSERT1(x, y, z)
# define __CTASSERT1(x, y, z) typedef char y ## z[/*CONSTCOND*/(x) ? 1 : -1] __unused
#endif
#ifndef __arraycount
# define __arraycount(__x) (sizeof(__x) / sizeof(__x[0]))
#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
const char *hwaddr_ntoa(const void *, size_t, char *, size_t);
size_t hwaddr_aton(uint8_t *, const char *);
ssize_t readfile(const char *, void *, size_t);
ssize_t writefile(const char *, mode_t, const void *, size_t);
int filemtime(const char *, time_t *);
char *get_line(char ** __restrict, ssize_t * __restrict);
int is_root_local(void);
#endif
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