Return to sys_machdep.c CVS log

Up to [Apple Darwin 0.x] / kernel / machdep / i386

Annotation of kernel/machdep/i386/sys_machdep.c, revision 1.1

1.1     ! root        1: /*
        !             2:  * Copyright (c) 1999 Apple Computer, Inc. All rights reserved.
        !             3:  *
        !             4:  * @APPLE_LICENSE_HEADER_START@
        !             5:  * 
        !             6:  * Portions Copyright (c) 1999 Apple Computer, Inc.  All Rights
        !             7:  * Reserved.  This file contains Original Code and/or Modifications of
        !             8:  * Original Code as defined in and that are subject to the Apple Public
        !             9:  * Source License Version 1.1 (the "License").  You may not use this file
        !            10:  * except in compliance with the License.  Please obtain a copy of the
        !            11:  * License at http://www.apple.com/publicsource and read it before using
        !            12:  * this file.
        !            13:  * 
        !            14:  * The Original Code and all software distributed under the License are
        !            15:  * distributed on an "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, EITHER
        !            16:  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
        !            17:  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
        !            18:  * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT.  Please see the
        !            19:  * License for the specific language governing rights and limitations
        !            20:  * under the License.
        !            21:  * 
        !            22:  * @APPLE_LICENSE_HEADER_END@
        !            23:  */
        !            24: 
        !            25: /*-
        !            26:  * Copyright (c) 1990, 1993
        !            27:  *     The Regents of the University of California.  All rights reserved.
        !            28:  *
        !            29:  * This code is derived from software contributed to Berkeley by
        !            30:  * William Jolitz.
        !            31:  *
        !            32:  * Redistribution and use in source and binary forms, with or without
        !            33:  * modification, are permitted provided that the following conditions
        !            34:  * are met:
        !            35:  * 1. Redistributions of source code must retain the above copyright
        !            36:  *    notice, this list of conditions and the following disclaimer.
        !            37:  * 2. Redistributions in binary form must reproduce the above copyright
        !            38:  *    notice, this list of conditions and the following disclaimer in the
        !            39:  *    documentation and/or other materials provided with the distribution.
        !            40:  * 3. All advertising materials mentioning features or use of this software
        !            41:  *    must display the following acknowledgement:
        !            42:  *     This product includes software developed by the University of
        !            43:  *     California, Berkeley and its contributors.
        !            44:  * 4. Neither the name of the University nor the names of its contributors
        !            45:  *    may be used to endorse or promote products derived from this software
        !            46:  *    without specific prior written permission.
        !            47:  *
        !            48:  * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
        !            49:  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
        !            50:  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
        !            51:  * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
        !            52:  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
        !            53:  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
        !            54:  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
        !            55:  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
        !            56:  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
        !            57:  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
        !            58:  * SUCH DAMAGE.
        !            59:  *
        !            60:  *     @(#)sys_machdep.c       8.1 (Berkeley) 6/11/93
        !            61:  */
        !            62: 
        !            63: #include <sys/param.h>
        !            64: #include <sys/systm.h>
        !            65: #include <sys/ioctl.h>
        !            66: #include <sys/file.h>
        !            67: #include <sys/proc.h>
        !            68: #include <sys/uio.h>
        !            69: #include <sys/kernel.h>
        !            70: #include <sys/mtio.h>
        !            71: #include <sys/buf.h>
        !            72: #include <sys/trace.h>
        !            73: 
        !            74: resuba()
        !            75: {
        !            76: }
        !            77: 
        !            78: #ifdef TRACE
        !            79: int    nvualarm;
        !            80: 
        !            81: struct vtrace_args {
        !            82:        int     request;
        !            83:        int     value;
        !            84: };
        !            85: vtrace(p, uap, retval)
        !            86:        struct proc *p;
        !            87:        register struct args *uap;
        !            88:        int *retval;
        !            89: {
        !            90:        int vdoualarm();
        !            91: 
        !            92:        switch (uap->request) {
        !            93: 
        !            94:        case VTR_DISABLE:               /* disable a trace point */
        !            95:        case VTR_ENABLE:                /* enable a trace point */
        !            96:                if (uap->value < 0 || uap->value >= TR_NFLAGS)
        !            97:                        return (EINVAL);
        !            98:                *retval = traceflags[uap->value];
        !            99:                traceflags[uap->value] = uap->request;
        !           100:                break;
        !           101: 
        !           102:        case VTR_VALUE:         /* return a trace point setting */
        !           103:                if (uap->value < 0 || uap->value >= TR_NFLAGS)
        !           104:                        return (EINVAL);
        !           105:                *retval = traceflags[uap->value];
        !           106:                break;
        !           107: 
        !           108:        case VTR_UALARM:        /* set a real-time ualarm, less than 1 min */
        !           109:                if (uap->value <= 0 || uap->value > 60 * hz || nvualarm > 5)
        !           110:                        return (EINVAL);
        !           111:                nvualarm++;
        !           112:                timeout(vdoualarm, (caddr_t)p->p_pid, uap->value);
        !           113:                break;
        !           114: 
        !           115:        case VTR_STAMP:
        !           116:                trace(TR_STAMP, uap->value, p->p_pid);
        !           117:                break;
        !           118:        }
        !           119:        return (0);
        !           120: }
        !           121: 
        !           122: vdoualarm(arg)
        !           123:        int arg;
        !           124: {
        !           125:        register struct proc *p;
        !           126: 
        !           127:        p = pfind(arg);
        !           128:        if (p)
        !           129:                psignal(p, 16);
        !           130:        nvualarm--;
        !           131: }
        !           132: #endif
        !           133: 
        !           134: #ifdef COMPAT
        !           135: /*
        !           136:  * Note: these tables are sorted by
        !           137:  * ioctl "code" (in ascending order).
        !           138:  */
        !           139: int fctls[] = { FIOCLEX, FIONCLEX, FIOASYNC, FIONBIO, FIONREAD, 0 };
        !           140: int tctls[] = {
        !           141:        TIOCGETD, TIOCSETD, TIOCHPCL, TIOCMODG, TIOCMODS,
        !           142:        TIOCGETP, TIOCSETP, TIOCSETN, TIOCEXCL, TIOCNXCL,
        !           143:        TIOCFLUSH,TIOCSETC, TIOCGETC, TIOCREMOTE,TIOCMGET,
        !           144:        TIOCMBIC, TIOCMBIS, TIOCMSET, TIOCSTART,TIOCSTOP,
        !           145:        TIOCPKT,  TIOCNOTTY,TIOCSTI,  TIOCOUTQ, TIOCGLTC,
        !           146:        TIOCSLTC, TIOCSPGRP,TIOCGPGRP,TIOCCDTR, TIOCSDTR,
        !           147:        TIOCCBRK, TIOCSBRK, TIOCLGET, TIOCLSET, TIOCLBIC,
        !           148:        TIOCLBIS, 0
        !           149: };
        !           150: 
        !           151: /*
        !           152:  * Map an old style ioctl command to new.
        !           153:  */
        !           154: mapioctl(cmd)
        !           155:        int cmd;
        !           156: {
        !           157:        register int *map, c;
        !           158: 
        !           159:        switch ((cmd >> 8) & 0xff) {
        !           160: 
        !           161:        case 'f':
        !           162:                map = fctls;
        !           163:                break;
        !           164: 
        !           165:        case 't':
        !           166:                map = tctls;
        !           167:                break;
        !           168: 
        !           169:        default:
        !           170:                return (0);
        !           171:        }
        !           172:        while ((c = *map) && (c&0xff) < (cmd&0xff))
        !           173:                map++;
        !           174:        if (c && (c&0xff) == (cmd&0xff))
        !           175:                return (c);
        !           176:        return (0);
        !           177: }
        !           178: #endif

This archive runs on limited infrastructure. Preserving old code on modern bandwidth. Automated agents are requested to crawl responsibly.