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Annotation of OSKit-Mach/include/sys/reboot.h, revision 1.1

1.1     ! root        1: /*
        !             2:  * Mach Operating System
        !             3:  * Copyright (c) 1993,1991,1990 Carnegie Mellon University
        !             4:  * All Rights Reserved.
        !             5:  *
        !             6:  * Permission to use, copy, modify and distribute this software and its
        !             7:  * documentation is hereby granted, provided that both the copyright
        !             8:  * notice and this permission notice appear in all copies of the
        !             9:  * software, derivative works or modified versions, and any portions
        !            10:  * thereof, and that both notices appear in supporting documentation.
        !            11:  *
        !            12:  * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
        !            13:  * CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
        !            14:  * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
        !            15:  *
        !            16:  * Carnegie Mellon requests users of this software to return to
        !            17:  *
        !            18:  *  Software Distribution Coordinator  or  [email protected]
        !            19:  *  School of Computer Science
        !            20:  *  Carnegie Mellon University
        !            21:  *  Pittsburgh PA 15213-3890
        !            22:  *
        !            23:  * any improvements or extensions that they make and grant Carnegie Mellon
        !            24:  * the rights to redistribute these changes.
        !            25:  */
        !            26: /*
        !            27:  * Copyright (c) 1982, 1986, 1988 Regents of the University of California.
        !            28:  * All rights reserved.
        !            29:  *
        !            30:  * Redistribution and use in source and binary forms, with or without
        !            31:  * modification, are permitted provided that the following conditions
        !            32:  * are met:
        !            33:  * 1. Redistributions of source code must retain the above copyright
        !            34:  *    notice, this list of conditions and the following disclaimer.
        !            35:  * 2. Redistributions in binary form must reproduce the above copyright
        !            36:  *    notice, this list of conditions and the following disclaimer in the
        !            37:  *    documentation and/or other materials provided with the distribution.
        !            38:  * 4. The name of the Laboratory may not be used to endorse or promote
        !            39:  *    products derived from this software without specific prior written
        !            40:  *    permission.
        !            41:  *
        !            42:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            43:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            44:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            45:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            46:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            47:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            48:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            49:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            50:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            51:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            52:  * SUCH DAMAGE.
        !            53:  *
        !            54:  *     @(#)reboot.h    7.5 (Berkeley) 6/27/88
        !            55:  */
        !            56: /*
        !            57:  * Warning: The contents of this file are deprecated;
        !            58:  * it should only ever be used for BSD and Mach 3 compatibility.
        !            59:  * As the above copyright notice suggests, this file originated in BSD;
        !            60:  * it is mostly the same, except the flags after RB_DFLTROOT
        !            61:  * have diverged from BSD.
        !            62:  */
        !            63: #ifndef        _MACH_SYS_REBOOT_H_
        !            64: #define        _MACH_SYS_REBOOT_H_
        !            65: 
        !            66: /*
        !            67:  * Arguments to reboot system call.
        !            68:  * These are converted to switches, and passed to startup program,
        !            69:  * and on to init.
        !            70:  */
        !            71: #define        RB_AUTOBOOT     0       /* flags for system auto-booting itself */
        !            72: 
        !            73: #define        RB_ASKNAME      0x01    /* -a: ask for file name to reboot from */
        !            74: #define        RB_SINGLE       0x02    /* -s: reboot to single user only */
        !            75: #define        RB_KDB          0x04    /* -d: kernel debugger symbols loaded */
        !            76: #define        RB_HALT         0x08    /* -h: enter KDB at bootup */
        !            77:                                /*     for host_reboot(): don't reboot,
        !            78:                                       just halt */
        !            79: #define        RB_INITNAME     0x10    /* -i: name given for /etc/init (unused) */
        !            80: #define        RB_DFLTROOT     0x20    /*     use compiled-in rootdev */
        !            81: #define        RB_NOBOOTRC     0x20    /* -b: don't run /etc/rc.boot */
        !            82: #define RB_ALTBOOT     0x40    /*     use /boot.old vs /boot */
        !            83: #define        RB_UNIPROC      0x80    /* -u: start only one processor */
        !            84: 
        !            85: #define        RB_SHIFT        8       /* second byte is for ux */
        !            86: 
        !            87: #define        RB_DEBUGGER     0x1000  /*     for host_reboot(): enter kernel
        !            88:                                       debugger from user level */
        !            89: 
        !            90: /* Corresponding BSD definitions, where they disagree with the Mach flags.  */
        !            91: #define BSD_RB_NOSYNC   0x04    /* dont sync before reboot */
        !            92: #define BSD_RB_KDB      0x40    /* give control to kernel debugger */
        !            93: #define BSD_RB_RDONLY   0x80    /* mount root fs read-only */
        !            94: #define BSD_RB_DUMP     0x100   /* dump kernel memory before reboot */
        !            95: #define BSD_RB_MINIROOT 0x200   /* mini-root present in memory at boot time */
        !            96: #define BSD_RB_CONFIG   0x400   /* invoke user configuration routing */
        !            97: 
        !            98: 
        !            99: /*
        !           100:  * Constants for converting boot-style device number to type,
        !           101:  * adaptor (uba, mba, etc), unit number and partition number.
        !           102:  * Type (== major device number) is in the low byte
        !           103:  * for backward compatibility.  Except for that of the "magic
        !           104:  * number", each mask applies to the shifted value.
        !           105:  * Format:
        !           106:  *      (4) (4) (4) (4)  (8)     (8)
        !           107:  *     --------------------------------
        !           108:  *     |MA | AD| CT| UN| PART  | TYPE |
        !           109:  *     --------------------------------
        !           110:  */
        !           111: #define        B_ADAPTORSHIFT          24
        !           112: #define        B_ADAPTORMASK           0x0f
        !           113: #define        B_ADAPTOR(val)          (((val) >> B_ADAPTORSHIFT) & B_ADAPTORMASK)
        !           114: #define B_CONTROLLERSHIFT      20
        !           115: #define B_CONTROLLERMASK       0xf
        !           116: #define        B_CONTROLLER(val)       (((val)>>B_CONTROLLERSHIFT) & B_CONTROLLERMASK)
        !           117: #define B_UNITSHIFT            16
        !           118: #define B_UNITMASK             0xf
        !           119: #define        B_UNIT(val)             (((val) >> B_UNITSHIFT) & B_UNITMASK)
        !           120: #define B_PARTITIONSHIFT       8
        !           121: #define B_PARTITIONMASK                0xff
        !           122: #define        B_PARTITION(val)        (((val) >> B_PARTITIONSHIFT) & B_PARTITIONMASK)
        !           123: #define        B_TYPESHIFT             0
        !           124: #define        B_TYPEMASK              0xff
        !           125: #define        B_TYPE(val)             (((val) >> B_TYPESHIFT) & B_TYPEMASK)
        !           126: 
        !           127: #define        B_MAGICMASK     ((u_int)0xf0000000U)
        !           128: #define        B_DEVMAGIC      ((u_int)0xa0000000U)
        !           129: 
        !           130: #define MAKEBOOTDEV(type, adaptor, controller, unit, partition) \
        !           131:        (((type) << B_TYPESHIFT) | ((adaptor) << B_ADAPTORSHIFT) | \
        !           132:        ((controller) << B_CONTROLLERSHIFT) | ((unit) << B_UNITSHIFT) | \
        !           133:        ((partition) << B_PARTITIONSHIFT) | B_DEVMAGIC)
        !           134: 
        !           135: #endif /* _MACH_SYS_REBOOT_H_ */

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