lib/unixcompat.h

   1 /** \file unixcompat.h
   2  *  \brief Header: collects differences between the various Unix
   3  *
   4  *  This header file collects differences between the various Unix
   5  *  variants that are supported by the Midnight Commander and provides
   6  *  replacement routines if they are not natively available.
   7  *  The major/minor macros are not specified in SUSv3, so we can only hope
   8  *  they are provided by the operating system or emulate it.
   9  */
  10
  11 #ifndef MC_UNIXCOMPAT_H
  12 #define MC_UNIXCOMPAT_H
  13
  14 #include <sys/types.h>          /* BSD */
  15
  16 #ifdef MAJOR_IN_MKDEV
  17 #include <sys/mkdev.h>
  18 #elif defined MAJOR_IN_SYSMACROS
  19 #include <sys/sysmacros.h>
  20 #endif
  21
  22 #include <unistd.h>
  23
  24 /*** typedefs(not structures) and defined constants **********************************************/
  25
  26 #ifndef major
  27 #warning major() is undefined. Device numbers will not be shown correctly.
  28 #define major(devnum) (((devnum) >> 8) & 0xff)
  29 #endif
  30
  31 #ifndef minor
  32 #warning minor() is undefined. Device numbers will not be shown correctly.
  33 #define minor(devnum) (((devnum) & 0xff))
  34 #endif
  35
  36 #ifndef makedev
  37 #warning makedev() is undefined. Device numbers will not be shown correctly.
  38 #define makedev(major,minor) ((((major) & 0xff) << 8) | ((minor) & 0xff))
  39 #endif
  40
  41 #ifndef STDIN_FILENO
  42 #define STDIN_FILENO 0
  43 #endif
  44
  45 #ifndef STDOUT_FILENO
  46 #define STDOUT_FILENO 1
  47 #endif
  48
  49 #ifndef STDERR_FILENO
  50 #define STDERR_FILENO 2
  51 #endif
  52
  53 /*** enums ***************************************************************************************/
  54
  55 /*** structures declarations (and typedefs of structures)*****************************************/
  56
  57 /*** global variables defined in .c file *********************************************************/
  58
  59 /*** declarations of public functions ************************************************************/
  60
  61 /*** inline functions ****************************************************************************/
  62
  63 #endif