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Annotation of coherent/d/kernel/USRSRC/coh/misc.c, revision 1.1

1.1     ! root        1: /* $Header: /newbits/kernel/USRSRC/coh/RCS/misc.c,v 1.4 91/07/24 07:51:19 bin Exp Locker: bin $ */
        !             2: /* (lgl-
        !             3:  *     The information contained herein is a trade secret of Mark Williams
        !             4:  *     Company, and  is confidential information.  It is provided  under a
        !             5:  *     license agreement,  and may be  copied or disclosed  only under the
        !             6:  *     terms of  that agreement.  Any  reproduction or disclosure  of this
        !             7:  *     material without the express written authorization of Mark Williams
        !             8:  *     Company or persuant to the license agreement is unlawful.
        !             9:  *
        !            10:  *     COHERENT Version 2.3.37
        !            11:  *     Copyright (c) 1982, 1983, 1984.
        !            12:  *     An unpublished work by Mark Williams Company, Chicago.
        !            13:  *     All rights reserved.
        !            14:  -lgl) */
        !            15: /*
        !            16:  * Coherent.
        !            17:  * Miscellaneous routines.
        !            18:  *
        !            19:  * $Log:       misc.c,v $
        !            20:  * Revision 1.4  91/07/24  07:51:19  bin
        !            21:  * update prov by hal
        !            22:  * 
        !            23:  * 
        !            24:  * Revision 1.1        88/03/24  16:14:01      src
        !            25:  * Initial revision
        !            26:  * 
        !            27:  * 87/05/08    Allan Cornish           /usr/src/sys/coh/misc.c
        !            28:  * System code and data segments no longer reported in panic messages.
        !            29:  *
        !            30:  * 87/02/17    Allan Cornish           /usr/src/sys/coh/misc.c
        !            31:  * Panic message now includes system code and data segments.
        !            32:  */
        !            33: #include <sys/coherent.h>
        !            34: #include <acct.h>
        !            35: #include <errno.h>
        !            36: #include <sys/ino.h>
        !            37: #include <sys/stat.h>
        !            38: #include <sys/uproc.h>
        !            39: 
        !            40: /*
        !            41:  * Copy `n' bytes from `bp1' to `bp2'.
        !            42:  */
        !            43: kkcopy(bp1, bp2, n)
        !            44: register char *bp1;
        !            45: register char *bp2;
        !            46: unsigned n;
        !            47: {
        !            48:        register unsigned n1;
        !            49: 
        !            50:        n1 = n;
        !            51:        if (n1) {
        !            52:                do {
        !            53:                        *bp2++ = *bp1++;
        !            54:                } while (--n1);
        !            55:        }
        !            56:        return (n);
        !            57: }
        !            58: 
        !            59: /*
        !            60:  * Clear the next `n' bytes starting at `bp'.
        !            61:  */
        !            62: kclear(bp, n)
        !            63: register char *bp;
        !            64: register unsigned n;
        !            65: {
        !            66:        if (n) {
        !            67:                do {
        !            68:                        *bp++ = 0;
        !            69:                } while (--n);
        !            70:        }
        !            71: }
        !            72: 
        !            73: /*
        !            74:  * Make sure we are the super user.
        !            75:  */
        !            76: super()
        !            77: {
        !            78:        if (u.u_uid) {
        !            79:                u.u_error = EPERM;
        !            80:                return (0);
        !            81:        }
        !            82:        u.u_flag |= ASU;
        !            83:        return (1);
        !            84: }
        !            85: 
        !            86: /*
        !            87:  * Make sure we are the gived `uid' or the super user.
        !            88:  */
        !            89: owner(uid)
        !            90: {
        !            91:        if (u.u_uid == uid)
        !            92:                return (1);
        !            93:        if (u.u_uid == 0) {
        !            94:                u.u_flag |= ASU;
        !            95:                return (1);
        !            96:        }
        !            97:        u.u_error = EPERM;
        !            98:        return (0);
        !            99: }
        !           100: 
        !           101: /*
        !           102:  * Panic.
        !           103:  */
        !           104: panic(a1)
        !           105: char *a1;
        !           106: {
        !           107:        static panflag;
        !           108: 
        !           109:        if (panflag++ == 0) {
        !           110:                printf("Panic: %r", &a1);
        !           111:                putchar('\n');
        !           112:                usync();
        !           113:        }
        !           114:        halt();
        !           115:        --panflag;
        !           116: }
        !           117: 
        !           118: /*
        !           119:  * Print a message from a device driver.
        !           120:  */
        !           121: devmsg(dev, a1)
        !           122: dev_t dev;
        !           123: char *a1;
        !           124: {
        !           125:        printf("(%d,%d): %r", major(dev), minor(dev), &a1);
        !           126:        printf("\n");
        !           127: }

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