usr/src/uts/common/sys/mkdev.h

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 1997 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  28 /*        All Rights Reserved   */
  29
  30 #ifndef _SYS_MKDEV_H
  31 #define _SYS_MKDEV_H
  32
  33 #pragma ident   "%Z%%M% %I%     %E% SMI"
  34
  35 #include <sys/types.h>
  36
  37 #ifdef  __cplusplus
  38 extern "C" {
  39 #endif
  40
  41 /*
  42  * SVR3/Pre-EFT device number constants.
  43  */
  44 #define ONBITSMAJOR     7       /* # of SVR3 major device bits */
  45 #define ONBITSMINOR     8       /* # of SVR3 minor device bits */
  46 #define OMAXMAJ         0x7f    /* SVR3 max major value */
  47 #define OMAXMIN         0xff    /* SVR3 max major value */
  48
  49 /*
  50  * 32-bit Solaris device major/minor sizes.
  51  */
  52 #define NBITSMAJOR32    14
  53 #define NBITSMINOR32    18
  54 #define MAXMAJ32        0x3ffful        /* SVR4 max major value */
  55 #define MAXMIN32        0x3fffful       /* SVR4 max minor value */
  56
  57 #ifdef _LP64
  58
  59 #define NBITSMAJOR64    32      /* # of major device bits in 64-bit Solaris */
  60 #define NBITSMINOR64    32      /* # of minor device bits in 64-bit Solaris */
  61 #define MAXMAJ64        0xfffffffful    /* max major value */
  62 #define MAXMIN64        0xfffffffful    /* max minor value */
  63
  64 #define NBITSMAJOR      NBITSMAJOR64
  65 #define NBITSMINOR      NBITSMINOR64
  66 #define MAXMAJ          MAXMAJ64
  67 #define MAXMIN          MAXMIN64
  68
  69 #else /* !_LP64 */
  70
  71 #define NBITSMAJOR      NBITSMAJOR32
  72 #define NBITSMINOR      NBITSMINOR32
  73 #define MAXMAJ          MAXMAJ32
  74 #define MAXMIN          MAXMIN32
  75
  76 #endif /* !_LP64 */
  77
  78 #if !defined(_KERNEL)
  79
  80 /*
  81  * Undefine sysmacros.h device macros.
  82  */
  83 #undef makedev
  84 #undef major
  85 #undef minor
  86
  87 #if defined(__STDC__)
  88
  89 extern dev_t makedev(const major_t, const minor_t);
  90 extern major_t major(const dev_t);
  91 extern minor_t minor(const dev_t);
  92 extern dev_t __makedev(const int, const major_t, const minor_t);
  93 extern major_t __major(const int, const dev_t);
  94 extern minor_t __minor(const int, const dev_t);
  95
  96 #else
  97
  98 extern dev_t makedev();
  99 extern major_t major();
 100 extern minor_t minor();
 101 extern dev_t __makedev();
 102 extern major_t __major();
 103 extern minor_t __minor();
 104
 105 #endif  /* defined(__STDC__) */
 106
 107 #define OLDDEV 0        /* old device format */
 108 #define NEWDEV 1        /* new device format */
 109
 110 #define makedev(maj, min)       (__makedev(NEWDEV, maj, min))
 111 #define major(dev)              (__major(NEWDEV, dev))
 112 #define minor(dev)              (__minor(NEWDEV, dev))
 113
 114 #endif  /* !defined(_KERNEL) */
 115
 116 #ifdef  __cplusplus
 117 }
 118 #endif
 119
 120 #endif  /* _SYS_MKDEV_H */