contrib/cpio/system.h

   1 /* System dependent declarations.  Requires sys/types.h.
   2    Copyright (C) 1992 Free Software Foundation, Inc.
   3
   4    This program is free software; you can redistribute it and/or modify
   5    it under the terms of the GNU General Public License as published by
   6    the Free Software Foundation; either version 2, or (at your option)
   7    any later version.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program; if not, write to the Free Software
  16    Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.  */
  17
  18 #if defined(STDC_HEADERS) || defined(HAVE_STRING_H)
  19 #include <string.h>
  20 #ifndef index
  21 #define index   strchr
  22 #endif
  23 #ifndef rindex
  24 #define rindex  strrchr
  25 #endif
  26 #ifndef bcmp
  27 #define bcmp(s1, s2, n) memcmp ((s1), (s2), (n))
  28 #endif
  29 #ifndef bzero
  30 #define bzero(s, n)     memset ((s), 0, (n))
  31 #endif
  32 #else
  33 #include <strings.h>
  34 #endif
  35
  36 #include <time.h>
  37
  38 #ifdef STDC_HEADERS
  39 #include <stdlib.h>
  40 #endif
  41
  42 #ifdef HAVE_UNISTD_H
  43 #include <unistd.h>
  44 #endif
  45
  46 #ifndef SEEK_SET
  47 #define SEEK_SET 0
  48 #define SEEK_CUR 1
  49 #define SEEK_END 2
  50 #endif
  51
  52 #ifndef _POSIX_VERSION
  53 #if defined(__MSDOS__) && !defined(__GNUC__)
  54 typedef long off_t;
  55 #endif
  56 off_t lseek ();
  57 #endif
  58
  59 /* Since major is a function on SVR4, we can't use `ifndef major'.  */
  60 #ifdef MAJOR_IN_MKDEV
  61 #include <sys/mkdev.h>
  62 #define HAVE_MAJOR
  63 #endif
  64
  65 #ifdef MAJOR_IN_SYSMACROS
  66 #include <sys/sysmacros.h>
  67 #define HAVE_MAJOR
  68 #endif
  69
  70 #ifdef major                    /* Might be defined in sys/types.h.  */
  71 #define HAVE_MAJOR
  72 #endif
  73
  74 #ifndef HAVE_MAJOR
  75 #define major(dev) (((dev) >> 8) & 0xff)
  76 #define minor(dev) ((dev) & 0xff)
  77 #define makedev(ma, mi) (((ma) << 8) | (mi))
  78 #endif
  79 #undef HAVE_MAJOR
  80
  81 #if defined(__MSDOS__) || defined(_POSIX_VERSION) || defined(HAVE_FCNTL_H)
  82 #include <fcntl.h>
  83 #else
  84 #include <sys/file.h>
  85 #endif
  86 #ifndef O_BINARY
  87 #define O_BINARY 0
  88 #endif
  89
  90 #include <errno.h>
  91 #ifndef errno
  92 extern int errno;
  93 #endif
  94 #ifdef __EMX__                  /* gcc on OS/2.  */
  95 #define EPERM EACCES
  96 #define ENXIO EIO
  97 #endif
  98
  99 #ifdef HAVE_UTIME_H
 100 #include <utime.h>
 101 #else
 102 struct utimbuf
 103 {
 104   time_t actime;
 105   time_t modtime;
 106 };
 107 #endif
 108
 109 #ifdef TRUE
 110 #undef TRUE
 111 #endif
 112 #define TRUE 1
 113 #ifdef FALSE
 114 #undef FALSE
 115 #endif
 116 #define FALSE 0
 117
 118 #ifndef __MSDOS__
 119 #define CONSOLE "/dev/tty"
 120 #else
 121 #define CONSOLE "con"
 122 #endif
 123
 124 #if defined(__MSDOS__) && !defined(__GNUC__)
 125 typedef int uid_t;
 126 typedef int gid_t;
 127 #endif
 128
 129 /* On most systems symlink() always creates links with rwxrwxrwx
 130    protection modes, but on some (HP/UX 8.07; I think maybe DEC's OSF
 131    on MIPS too) symlink() uses the value of umask, so links' protection modes
 132    aren't always rwxrwxrwx.  There doesn't seem to be any way to change
 133    the modes of a link (no system call like, say, lchmod() ), it seems
 134    the only way to set the modes right is to set umask before calling
 135    symlink(). */
 136
 137 #ifndef SYMLINK_USES_UMASK
 138 #define UMASKED_SYMLINK(name1,name2,mode)    symlink(name1,name2)
 139 #else
 140 #define UMASKED_SYMLINK(name1,name2,mode)    umasked_symlink(name1,name2,mode)
 141 #endif /* SYMLINK_USES_UMASK */
 142