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portability.h
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/*
* Copyright 2001-2018 Alan Robertson <alanr@unix.sh>
*
* This source code is licensed under the GNU Lesser General Public License
* version 2.1 or later (LGPLv2.1+) WITHOUT ANY WARRANTY.
*/
#ifndef PORTABILITY_H
# define PORTABILITY_H
# define EOS '\0'
# define DIMOF(a) ((int) (sizeof(a)/sizeof(a[0])) )
/* Needs to be defined before any other includes, otherwise some system
* headers do not behave as expected! Major black magic... */
# undef _GNU_SOURCE /* in case it was defined on the command line */
# define _GNU_SOURCE
/* Please leave this as the first #include - Solaris needs it there */
# ifdef HAVE_CONFIG_H
# include <config.h>
# endif
/* Prototypes for libreplace functions */
# ifndef HAVE_DAEMON
/* We supply a replacement function, but need a prototype */
int daemon(int nochdir, int noclose);
# endif /* HAVE_DAEMON */
# ifndef HAVE_SETENV
/* We supply a replacement function, but need a prototype */
int setenv(const char *name, const char *value, int why);
# endif /* HAVE_SETENV */
# ifndef HAVE_STRERROR
/* We supply a replacement function, but need a prototype */
char *strerror(int errnum);
# endif /* HAVE_STRERROR */
# ifndef HAVE_STRCHRNUL
/* We supply a replacement function, but need a prototype */
char *strchrnul(const char *s, int c_in);
# endif /* HAVE_STRCHRNUL */
# ifndef HAVE_ALPHASORT
# include <dirent.h>
int
alphasort(const void *dirent1, const void *dirent2);
# endif /* HAVE_ALPHASORT */
# ifndef HAVE_STRNLEN
size_t strnlen(const char *s, size_t maxlen);
# else
# define USE_GNU
# endif
# ifndef HAVE_STRNDUP
char *strndup(const char *str, size_t len);
# else
# define USE_GNU
# endif
// This test could be better, but it covers platforms of interest
# if defined(ON_BSD) || defined(ON_SOLARIS)
# define SUPPORT_PROCFS 0
# else
# define SUPPORT_PROCFS 1
# endif
# include <glib.h>
# if !GLIB_CHECK_VERSION(2,28,0)
# include <string.h>
/* Since: 2.28 */
static inline void
g_list_free_full(GList * list, GDestroyNotify free_func)
{
g_list_foreach(list, (GFunc) free_func, NULL);
g_list_free(list);
}
# endif
# if SUPPORT_DBUS
# ifndef HAVE_DBUSBASICVALUE
# include <stdint.h>
# include <dbus/dbus.h>
/**
* An 8-byte struct you could use to access int64 without having
* int64 support
*/
typedef struct
{
uint32_t first32; /**< first 32 bits in the 8 bytes (beware endian issues) */
uint32_t second32; /**< second 32 bits in the 8 bytes (beware endian issues) */
} DBus8ByteStruct;
/**
* A simple value union that lets you access bytes as if they
* were various types; useful when dealing with basic types via
* void pointers and varargs.
*
* This union also contains a pointer member (which can be used
* to retrieve a string from dbus_message_iter_get_basic(), for
* instance), so on future platforms it could conceivably be larger
* than 8 bytes.
*/
typedef union
{
unsigned char bytes[8]; /**< as 8 individual bytes */
int16_t i16; /**< as int16 */
uint16_t u16; /**< as int16 */
int32_t i32; /**< as int32 */
uint32_t u32; /**< as int32 */
uint32_t bool_val; /**< as boolean */
# ifdef DBUS_HAVE_INT64
int64_t i64; /**< as int64 */
uint64_t u64; /**< as int64 */
# endif
DBus8ByteStruct eight; /**< as 8-byte struct */
double dbl; /**< as double */
unsigned char byt; /**< as byte */
char *str; /**< as char* (string, object path or signature) */
int fd; /**< as Unix file descriptor */
} DBusBasicValue;
# endif
# endif
/* Replacement error codes for non-linux */
# include <errno.h>
# ifndef ENOTUNIQ
# define ENOTUNIQ 190
# endif
# ifndef ECOMM
# define ECOMM 191
# endif
# ifndef ELIBACC
# define ELIBACC 192
# endif
# ifndef EREMOTEIO
# define EREMOTEIO 193
# endif
# ifndef EUNATCH
# define EUNATCH 194
# endif
# ifndef ENOKEY
# define ENOKEY 195
# endif
# ifndef ENODATA
# define ENODATA 196
# endif
# ifndef ETIME
# define ETIME 197
# endif
# ifndef ENOSR
# define ENOSR 198
# endif
# ifndef ENOSTR
# define ENOSTR 199
# endif
# ifndef EKEYREJECTED
# define EKEYREJECTED 200
# endif
/*
* Some compilers (eg. Sun studio) do not define __FUNCTION__
*/
# ifdef __SUNPRO_C
# define __FUNCTION__ __func__
# endif
# ifdef __MY_UNKNOWN_C
# define __FUNCTION__ "__FUNCTION__"
# endif
#endif /* PORTABILITY_H */

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