FreeBSD/Linux Kernel Cross Reference
sys/sys/reboot.h

     /*      $OpenBSD: reboot.h,v 1.20 2021/10/26 16:29:49 deraadt Exp $     */
     /*      $NetBSD: reboot.h,v 1.9 1996/04/22 01:23:25 christos Exp $      */
     
     /*
      * Copyright (c) 1982, 1986, 1988, 1993, 1994
      *      The Regents of the University of California.  All rights reserved.
      *
      * Redistribution and use in source and binary forms, with or without
      * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. Neither the name of the University nor the names of its contributors
     *    may be used to endorse or promote products derived from this software
     *    without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
     * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
     * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
     * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
     * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
     * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
     * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
     * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
     * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
     * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
     * SUCH DAMAGE.
     *
     *      @(#)reboot.h    8.2 (Berkeley) 7/10/94
     */
    
    #ifndef _SYS_REBOOT_H_
    #define _SYS_REBOOT_H_
    
    /*
     * Arguments to reboot system call.  These are passed to the boot program,
     * and then on to init.
     */
    #define RB_AUTOBOOT     0       /* flags for system auto-booting itself */
    
    #define RB_ASKNAME      0x00001 /* ask for file name to reboot from */
    #define RB_SINGLE       0x00002 /* reboot to single user only */
    #define RB_NOSYNC       0x00004 /* dont sync before reboot */
    #define RB_HALT         0x00008 /* don't reboot, just halt */
    #define RB_INITNAME     0x00010 /* name given for /etc/init (unused) */
    #define RB_DFLTROOT     0x00020 /* use compiled-in rootdev */
    #define RB_KDB          0x00040 /* give control to kernel debugger */
    #define RB_RDONLY       0x00080 /* mount root fs read-only */
    #define RB_DUMP         0x00100 /* dump kernel memory before reboot */
    #define RB_MINIROOT     0x00200 /* mini-root present in memory at boot time */
    #define RB_CONFIG       0x00400 /* change configured devices */
    #define RB_TIMEBAD      0x00800 /* don't call resettodr() in boot() */
    #define RB_POWERDOWN    0x01000 /* attempt to power down machine */
    #define RB_SERCONS      0x02000 /* use serial console if available */
    #define RB_USERREQ      0x04000 /* boot() called at user request (e.g. ddb) */
    #define RB_RESET        0x08000 /* just reset, no cleanup  */
    #define RB_GOODRANDOM   0x10000 /* excellent random seed loaded */
    #define RB_UNHIBERNATE  0x20000 /* unhibernate */
    
    /*
     * Constants for converting boot-style device number to type,
     * adaptor (uba, mba, etc), unit number and partition number.
     * Type (== major device number) is in the low byte
     * for backward compatibility.  Except for that of the "magic
     * number", each mask applies to the shifted value.
     * Format:
     *       (4) (4) (4) (4)  (8)     (8)
     *      --------------------------------
     *      |MA | AD| CT| UN| PART  | TYPE |
     *      --------------------------------
     */
    #define B_ADAPTORSHIFT          24
    #define B_ADAPTORMASK           0x0f
    #define B_ADAPTOR(val)          (((val) >> B_ADAPTORSHIFT) & B_ADAPTORMASK)
    #define B_CONTROLLERSHIFT       20
    #define B_CONTROLLERMASK        0xf
    #define B_CONTROLLER(val)       (((val)>>B_CONTROLLERSHIFT) & B_CONTROLLERMASK)
    #define B_UNITSHIFT             16
    #define B_UNITMASK              0xf
    #define B_UNIT(val)             (((val) >> B_UNITSHIFT) & B_UNITMASK)
    #define B_PARTITIONSHIFT        8
    #define B_PARTITIONMASK         0xff
    #define B_PARTITION(val)        (((val) >> B_PARTITIONSHIFT) & B_PARTITIONMASK)
    #define B_TYPESHIFT             0
    #define B_TYPEMASK              0xff
    #define B_TYPE(val)             (((val) >> B_TYPESHIFT) & B_TYPEMASK)
    
    #define B_MAGICMASK     0xf0000000
    #define B_DEVMAGIC      0xa0000000
    
    #define MAKEBOOTDEV(type, adaptor, controller, unit, partition) \
            (((type) << B_TYPESHIFT) | ((adaptor) << B_ADAPTORSHIFT) | \
            ((controller) << B_CONTROLLERSHIFT) | ((unit) << B_UNITSHIFT) | \
            ((partition) << B_PARTITIONSHIFT) | B_DEVMAGIC)
    
    #if     defined(_KERNEL) && !defined(_STANDALONE) && !defined(_LOCORE)
   
   __BEGIN_DECLS
   __dead void     reboot(int);
   __dead void     boot(int);
   __END_DECLS
   
   #endif /* _KERNEL */
   
   #endif /* !_SYS_REBOOT_H_ */

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