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Annotation of XNU/bsd/kern/kern_xxx.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 2000 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * The contents of this file constitute Original Code as defined in and
        !             7:  * are subject to the Apple Public Source License Version 1.1 (the
        !             8:  * "License").  You may not use this file except in compliance with the
        !             9:  * License.  Please obtain a copy of the License at
        !            10:  * http://www.apple.com/publicsource and read it before using this file.
        !            11:  * 
        !            12:  * This Original Code and all software distributed under the License are
        !            13:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            14:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            15:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            16:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            17:  * License for the specific language governing rights and limitations
        !            18:  * under the License.
        !            19:  * 
        !            20:  * @APPLE_LICENSE_HEADER_END@
        !            21:  */
        !            22: /* Copyright (c) 1995 NeXT Computer, Inc. All Rights Reserved */
        !            23: /*
        !            24:  * Copyright (c) 1982, 1986, 1989, 1993
        !            25:  *     The Regents of the University of California.  All rights reserved.
        !            26:  *
        !            27:  * Redistribution and use in source and binary forms, with or without
        !            28:  * modification, are permitted provided that the following conditions
        !            29:  * are met:
        !            30:  * 1. Redistributions of source code must retain the above copyright
        !            31:  *    notice, this list of conditions and the following disclaimer.
        !            32:  * 2. Redistributions in binary form must reproduce the above copyright
        !            33:  *    notice, this list of conditions and the following disclaimer in the
        !            34:  *    documentation and/or other materials provided with the distribution.
        !            35:  * 3. All advertising materials mentioning features or use of this software
        !            36:  *    must display the following acknowledgement:
        !            37:  *     This product includes software developed by the University of
        !            38:  *     California, Berkeley and its contributors.
        !            39:  * 4. Neither the name of the University nor the names of its contributors
        !            40:  *    may be used to endorse or promote products derived from this software
        !            41:  *    without specific prior written permission.
        !            42:  *
        !            43:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            44:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            45:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            46:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            47:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            48:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            49:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            50:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            51:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            52:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            53:  * SUCH DAMAGE.
        !            54:  *
        !            55:  *     @(#)kern_xxx.c  8.2 (Berkeley) 11/14/93
        !            56:  */
        !            57: 
        !            58: #import <cputypes.h> 
        !            59: 
        !            60: #include <sys/param.h>
        !            61: #include <sys/systm.h>
        !            62: #include <sys/kernel.h>
        !            63: #include <sys/proc.h>
        !            64: #include <sys/reboot.h>
        !            65: #include <sys/vm.h>
        !            66: #include <sys/sysctl.h>
        !            67: 
        !            68: #include <sys/mount.h>
        !            69: 
        !            70: #if COMPAT_43
        !            71: /* ARGSUSED */
        !            72: int
        !            73: ogethostid(p, uap, retval)
        !            74: struct proc *p;
        !            75: void *uap;
        !            76: register_t *retval;
        !            77: {
        !            78: 
        !            79:        *retval = hostid;
        !            80:        return 0;
        !            81: }
        !            82: 
        !            83: struct osethostid_args {
        !            84:        long hostid;
        !            85: };
        !            86: /* ARGSUSED */
        !            87: int
        !            88: osethostid(p, uap, retval)
        !            89: struct proc *p;
        !            90: register struct osethostid_args *uap;
        !            91: register_t *retval;
        !            92: {
        !            93:        int error;
        !            94: 
        !            95:        if (error = suser(p->p_ucred, &p->p_acflag))
        !            96:                return (error);
        !            97:        hostid = uap->hostid;
        !            98:        return (0);
        !            99: 
        !           100: }
        !           101: 
        !           102: struct ogethostname_args {
        !           103:                char    *hostname;
        !           104:                u_int   len;
        !           105: };
        !           106: /* ARGSUSED */
        !           107: int
        !           108: ogethostname(p, uap, retval)
        !           109: struct proc *p;
        !           110: register struct ogethostname_args *uap;
        !           111: register_t *retval;
        !           112: {
        !           113:        int name;
        !           114: 
        !           115:        name = KERN_HOSTNAME;
        !           116: 
        !           117:        return (kern_sysctl(&name, 1, uap->hostname, &uap->len),
        !           118:            0, 0);
        !           119: }
        !           120: 
        !           121: struct osethostname_args {
        !           122:                char    *hostname;
        !           123:                u_int   len;
        !           124: };
        !           125: /* ARGSUSED */
        !           126: int
        !           127: osethostname(p, uap, retval)
        !           128: struct proc *p;
        !           129: register struct osethostname_args *uap;
        !           130: register_t *retval;
        !           131: {
        !           132:        int name;
        !           133:        int error;
        !           134: 
        !           135:        if (error = suser(p->p_ucred, &p->p_acflag))
        !           136:                return (error);
        !           137:                
        !           138:        name = KERN_HOSTNAME;
        !           139:        return (kern_sysctl(&name, 1, 0, 0, uap->hostname,
        !           140:            uap->len));
        !           141: }
        !           142: 
        !           143: struct ogetdomainname_args {
        !           144:                char    *domainname;
        !           145:                int     len;
        !           146: };
        !           147: /* ARGSUSED */
        !           148: int
        !           149: ogetdomainname(p, uap, retval)
        !           150: struct proc *p;
        !           151: register struct ogetdomainname_args *uap;
        !           152: register_t *retval;
        !           153: {
        !           154:        int name;
        !           155:        
        !           156:        name = KERN_DOMAINNAME;
        !           157:        return (kern_sysctl(&name, 1, uap->domainname,
        !           158:            &uap->len, 0, 0));
        !           159: }
        !           160: 
        !           161: struct osetdomainname_args {
        !           162:                char    *domainname;
        !           163:                u_int   len;
        !           164: };
        !           165: /* ARGSUSED */
        !           166: int
        !           167: osetdomainname(p, uap, retval)
        !           168: struct proc *p;
        !           169: register struct osetdomainname_args *uap;
        !           170: register_t *retval;
        !           171: {
        !           172:        int name;
        !           173:        int error;
        !           174: 
        !           175:        if (error = suser(p->p_ucred, &p->p_acflag))
        !           176:                return (error);
        !           177:        name = KERN_DOMAINNAME;
        !           178:        return (kern_sysctl(&name, 1, 0, 0, uap->domainname,
        !           179:            uap->len));
        !           180: }
        !           181: #endif /* COMPAT_43 */
        !           182: 
        !           183: struct reboot_args {
        !           184:                int     opt;
        !           185:                char    *command;
        !           186: };
        !           187: 
        !           188: reboot(p, uap, retval)
        !           189: struct proc *p;
        !           190: register struct reboot_args *uap;
        !           191: register_t *retval;
        !           192: {
        !           193:        char command[64];
        !           194:        int error;
        !           195:        int dummy=0;
        !           196: 
        !           197:        command[0] = '\0';
        !           198: 
        !           199:        if (error = suser(p->p_cred->pc_ucred, &p->p_acflag))
        !           200:                return(error);  
        !           201:        
        !           202:        if (uap->opt & RB_COMMAND)
        !           203:                error = copyinstr(uap->command,
        !           204:                                        command, sizeof(command), &dummy);
        !           205:        if (!error)
        !           206:                boot(RB_BOOT, uap->opt, command);
        !           207:        return(error);
        !           208: }
        !           209: 

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