usr/src/head/devmgmt.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 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  23 /*        All Rights Reserved   */
  24
  25
  26 #ifndef _DEVMGMT_H
  27 #define _DEVMGMT_H
  28
  29 #pragma ident   "%Z%%M% %I%     %E% SMI"        /* SVr4.0 1.12  */
  30
  31 #ifdef  __cplusplus
  32 extern "C" {
  33 #endif
  34
  35 /*
  36  * devmgmt.h
  37  *
  38  * Contents:
  39  *    - Device Management definitions,
  40  *    - getvol() definitions
  41  */
  42
  43 /*
  44  * Device management definitions
  45  *      - Default pathnames (relative to installation point)
  46  *      - Environment variable namess
  47  *      - Standard field names in the device table
  48  *      - Flags
  49  *      - Miscellaneous definitions
  50  */
  51
  52
  53 /*
  54  * Default pathnames (relative to the package installation
  55  * point) to the files used by Device Management:
  56  *
  57  *      DTAB_PATH       Device table
  58  *      DGRP_PATH       Device group table
  59  *      DVLK_PATH       Device reservation table
  60  */
  61
  62 #define DTAB_PATH                       "/etc/device.tab"
  63 #define DGRP_PATH                       "/etc/dgroup.tab"
  64 #define DVLK_PATH                       "/etc/devlkfile"
  65
  66
  67 /*
  68  * Names of environment variables
  69  *
  70  *      OAM_DEVTAB      Name of variable that defines the pathname to
  71  *                      the device-table file
  72  *      OAM_DGROUP      Name of variable that defines the pathname to
  73  *                      the device-group table file
  74  *      OAM_DEVLKTAB    Name of variable that defines the pathname to
  75  *                      the device-reservation table file
  76  */
  77
  78 #define OAM_DEVTAB                      "OAM_DEVTAB"
  79 #define OAM_DGROUP                      "OAM_DGROUP"
  80 #define OAM_DEVLKTAB                    "OAM_DEVLKTAB"
  81
  82
  83 /*
  84  * Standard field names in the device table
  85  */
  86
  87 #define DTAB_ALIAS                      "alias"
  88 #define DTAB_CDEVICE                    "cdevice"
  89 #define DTAB_BDEVICE                    "bdevice"
  90 #define DTAB_PATHNAME                   "pathname"
  91
  92
  93 /*
  94  * Flags:
  95  *      For getdev() and getdgrp():
  96  *              DTAB_ANDCRITERIA        Devices must meet all criteria
  97  *                                      instead of any of the criteria
  98  *              DTAB_EXCLUDEFLAG        The list of devices or device groups
  99  *                                      is the list that is to be excluded,
 100  *                                      not those to select from.
 101  *              DTAB_LISTALL            List all device groups, even those that
 102  *                                      have no valid members (getdgrp() only).
 103  */
 104
 105 #define DTAB_ANDCRITERIA                0x01
 106 #define DTAB_EXCLUDEFLAG                0x02
 107 #define DTAB_LISTALL                    0x04
 108
 109
 110 /*
 111  * Miscellaneous Definitions
 112  *
 113  *      DTAB_MXALIASLN  Maximum alias length
 114  */
 115
 116 #define DTAB_MXALIASLN                  14
 117
 118 /*
 119  * Device Management Structure definitions
 120  *      reservdev       Reserved device description
 121  */
 122
 123 /*
 124  * struct reservdev
 125  *
 126  *      Structure describes a reserved device.
 127  *
 128  *  Elements:
 129  *      char   *devname         Alias of the reserved device
 130  *      pid_t   key             Key used to reserve the device
 131  */
 132
 133 struct reservdev {
 134         char   *devname;
 135         pid_t   key;
 136 };
 137
 138 /*
 139  * Device Management Functions:
 140  *
 141  *      devattr()       Returns a device's attribute
 142  *      devreserv()     Reserves a device
 143  *      devfree()       Frees a reserved device
 144  *      reservdev()     Return list of reserved devices
 145  *      getdev()        Get devices that match criteria
 146  *      getdgrp()       Get device-groups containing devices
 147  *                      that match criteria
 148  *      listdev()       List attributes defined for a device
 149  *      listdgrp()      List members of a device-group
 150  */
 151
 152         char                    *devattr(char *, char *);
 153         int                     devfree(int, char *);
 154         char                    **devreserv(int, char ***);
 155         char                    **getdev(char **, char **, int);
 156         char                    **getdgrp(char **, char **, int);
 157         char                    **listdev(char *);
 158         char                    **listdgrp(char *);
 159         struct reservdev        **reservdev(void);
 160
 161 /*
 162  * getvol() definitions
 163  */
 164
 165 #define DM_BATCH        0x0001
 166 #define DM_ELABEL       0x0002
 167 #define DM_FORMAT       0x0004
 168 #define DM_FORMFS       0x0008
 169 #define DM_WLABEL       0x0010
 170 #define DM_OLABEL       0x0020
 171
 172         int                     getvol(char *, char *, int, char *);
 173
 174 #ifdef  __cplusplus
 175 }
 176 #endif
 177
 178 #endif  /* _DEVMGMT_H */