bsd_compat.h

/*-
 * Copyright (c) 2014 Landon Fuller <[email protected]>
 * 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
 *    in this position and unchanged.
 * 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(S) ``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(S) 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 _BSD_COMPAT_H
#define _BSD_COMPAT_H

#include "pkg_config.h"

#ifdef __OpenBSD__
 #include "../external/libelf/_elftc.h"

 #ifndef EPROTO
  #define EPROTO EINTR
 #endif
#endif

#ifndef HAVE_BSD_SYS_CDEFS_H

#include <sys/cdefs.h>

#else

/* Deal with broken __DECONST */
#ifndef __uintptr_t
# include <stdint.h>
# define __uintptr_t uintptr_t
#endif

#include <bsd/sys/cdefs.h>
#endif

#ifdef HAVE_BSD_STDLIB_H
#include <bsd/stdlib.h>
#endif

#ifdef HAVE_BSD_UNISTD_H
#include <bsd/unistd.h>
#endif

#ifdef HAVE_BSD_STRING_H
#include <bsd/string.h>
#endif

#ifdef HAVE_BSD_STDIO_H
#include <bsd/stdio.h>
#endif

#ifdef HAVE_BSD_STLIB_H
#include <bsd/stdlib.h>
#endif

#ifdef HAVE_BSD_ERR_H
#include <bsd/err.h>
#endif

#ifdef HAVE_BSD_LIBUTIL_H
#include <bsd/libutil.h>
#endif

#ifdef HAVE_BSD_SYS_TIME_H
#include <bsd/sys/time.h>
#endif

#include <sys/fcntl.h>
#include <sys/stat.h>
#include "endian_util.h"

#if !HAVE_EACCESS
#define eaccess(_p, _m) access(_p, _m)
#endif

#if !HAVE_HUMANIZE_NUMBER
#include "humanize_number.h"
#endif

#if !HAVE_CLOSEFROM
void closefrom(int lowfd);
#endif

#ifndef AT_FDCWD
#define AT_FDCWD		-100
#endif

#ifndef AT_EACCESS
#define AT_EACCESS		0x100
#endif

#ifndef AT_SYMLINK_NOFOLLOW
#define	AT_SYMLINK_NOFOLLOW	0x200
#endif

#if !HAVE_FACCESSAT
int faccessat(int fd, const char *path, int mode, int flag);
#endif

#if !HAVE_FSTATAT
int fstatat(int fd, const char *path, struct stat *buf, int flag);
#endif

#if !HAVE_OPENAT
int openat(int fd, const char *path, int flags, ...);
#endif

#if !HAVE_READLINKAT
ssize_t readlinkat(int fd, const char *restrict path, char *restrict buf, size_t bufsize);
#endif

#if !HAVE_UNLINKAT
# ifndef AT_REMOVEDIR
#  define AT_REMOVEDIR	0x800
# endif
int unlinkat(int fd, const char *path, int flag);
#endif

#if !HAVE_STRTONUM
long long strtonum(const char *, long long, long long, const char **);
#endif

#if !HAVE_STRNSTR
char * strnstr(const char *s, const char *find, size_t slen);
#endif

#ifndef _PATH_GROUP
#define _PATH_GROUP "/etc/group"
#endif

#ifndef __FBSDID
#define __FBSDID(x)
#endif

#ifndef EAUTH
#define EAUTH 80
#endif

#ifndef ENEEDAUTH
#define ENEEDAUTH 81
#endif

#ifndef MAXLOGNAME
#define MAXLOGNAME 33
#endif

#ifndef __DECONST
#define __DECONST(type, var)    ((type)(uintptr_t)(const void *)(var))
#endif

#ifndef __unused
#if defined(__GNUC__) || defined(__clang__)
# define __unused __attribute__((__unused__))
#else
# define __unused
#endif
#endif

#ifndef __unreachable
# if defined (__GNUC__) || defined (__clang__)
#  define __unreachable()    __builtin_unreachable()
# else
#  define __unreachable()    ((void)0)
# endif
#endif

#if !HAVE_FUNOPEN
#if !HAVE_FOPENCOOKIE
# error "Your system has neither funopen nor fopencookie, cannot continue"
#endif
FILE * funopen(const void *cookie, int (*readfn)(void *, char *, int),
         int (*writefn)(void *, const char *, int),
         off_t (*seekfn)(void *, off_t, int), int (*closefn)(void *));
#endif

#if !HAVE_GETPROGNAME
# if defined (__linux__) && defined (__GLIBC__)
extern char *program_invocation_short_name;
#  define getprogname()    program_invocation_short_name
# elif defined (__linux__) && !defined (__GLIBC__)
extern char *__progname;
#  define getprogname()    __progname
# else
#  error "Don't know how to replace getprogname()"
# endif
#endif

#endif