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 (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21 /*
  22  * Copyright 2014 Garrett D'Amore <garrett@damore.org>
  23  *
  24  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  25  * Use is subject to license terms.
  26  */
  27
  28 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  29 /*        All Rights Reserved   */
  30
  31 #ifndef _SYS_MKDEV_H
  32 #define _SYS_MKDEV_H
  33
  34 #include <sys/types.h>
  35
  36 #ifdef  __cplusplus
  37 extern "C" {
  38 #endif
  39
  40 /*
  41  * SVR3/Pre-EFT device number constants.
  42  */
  43 #define ONBITSMAJOR     7       /* # of SVR3 major device bits */
  44 #define ONBITSMINOR     8       /* # of SVR3 minor device bits */
  45 #define OMAXMAJ         0x7f    /* SVR3 max major value */
  46 #define OMAXMIN         0xff    /* SVR3 max major value */
  47
  48 /*
  49  * 32-bit Solaris device major/minor sizes.
  50  */
  51 #define NBITSMAJOR32    14
  52 #define NBITSMINOR32    18
  53 #define MAXMAJ32        0x3ffful        /* SVR4 max major value */
  54 #define MAXMIN32        0x3fffful       /* SVR4 max minor value */
  55
  56 #define NBITSMAJOR64    32      /* # of major device bits in 64-bit Solaris */
  57 #define NBITSMINOR64    32      /* # of minor device bits in 64-bit Solaris */
  58
  59 #ifdef _LP64
  60
  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 extern dev_t makedev(const major_t, const minor_t);
  88 extern major_t major(const dev_t);
  89 extern minor_t minor(const dev_t);
  90 extern dev_t __makedev(const int, const major_t, const minor_t);
  91 extern major_t __major(const int, const dev_t);
  92 extern minor_t __minor(const int, const dev_t);
  93
  94 #define OLDDEV 0        /* old device format */
  95 #define NEWDEV 1        /* new device format */
  96
  97 #define makedev(maj, min)       (__makedev(NEWDEV, maj, min))
  98 #define major(dev)              (__major(NEWDEV, dev))
  99 #define minor(dev)              (__minor(NEWDEV, dev))
 100
 101 #endif  /* !defined(_KERNEL) */
 102
 103 #ifdef  __cplusplus
 104 }
 105 #endif
 106
 107 #endif  /* _SYS_MKDEV_H */