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Annotation of coherent/d/PS2_KERNEL/coh.286/misc.c, revision 1.1

1.1     ! root        1: /* $Header: /kernel/kersrc/coh.286/RCS/misc.c,v 1.1 92/07/17 15:18:09 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        !            12:  *     An unpublished work by Mark Williams Company, Chicago.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 1.1  92/07/17  15:18:09  bin
        !            21:  * Initial revision
        !            22:  * 
        !            23:  * Revision 1.1        88/03/24  16:14:01      src
        !            24:  * Initial revision
        !            25:  * 
        !            26:  * 87/05/08    Allan Cornish           /usr/src/sys/coh/misc.c
        !            27:  * System code and data segments no longer reported in panic messages.
        !            28:  *
        !            29:  * 87/02/17    Allan Cornish           /usr/src/sys/coh/misc.c
        !            30:  * Panic message now includes system code and data segments.
        !            31:  */
        !            32: #include <sys/coherent.h>
        !            33: #include <acct.h>
        !            34: #include <errno.h>
        !            35: #include <sys/ino.h>
        !            36: #include <sys/stat.h>
        !            37: 
        !            38: /*
        !            39:  * Copy `n' bytes from `bp1' to `bp2'.
        !            40:  */
        !            41: kkcopy(bp1, bp2, n)
        !            42: register char *bp1;
        !            43: register char *bp2;
        !            44: unsigned n;
        !            45: {
        !            46:        register unsigned n1;
        !            47: 
        !            48:        n1 = n;
        !            49:        if (n1) {
        !            50:                do {
        !            51:                        *bp2++ = *bp1++;
        !            52:                } while (--n1);
        !            53:        }
        !            54:        return (n);
        !            55: }
        !            56: 
        !            57: /*
        !            58:  * Clear the next `n' bytes starting at `bp'.
        !            59:  */
        !            60: kclear(bp, n)
        !            61: register char *bp;
        !            62: register unsigned n;
        !            63: {
        !            64:        if (n) {
        !            65:                do {
        !            66:                        *bp++ = 0;
        !            67:                } while (--n);
        !            68:        }
        !            69: }
        !            70: 
        !            71: /*
        !            72:  * Make sure we are the super user.
        !            73:  */
        !            74: super()
        !            75: {
        !            76:        if (u.u_uid) {
        !            77:                u.u_error = EPERM;
        !            78:                return (0);
        !            79:        }
        !            80:        u.u_flag |= ASU;
        !            81:        return (1);
        !            82: }
        !            83: 
        !            84: /*
        !            85:  * Make sure we are the gived `uid' or the super user.
        !            86:  */
        !            87: owner(uid)
        !            88: {
        !            89:        if (u.u_uid == uid)
        !            90:                return (1);
        !            91:        if (u.u_uid == 0) {
        !            92:                u.u_flag |= ASU;
        !            93:                return (1);
        !            94:        }
        !            95:        u.u_error = EPERM;
        !            96:        return (0);
        !            97: }
        !            98: 
        !            99: /*
        !           100:  * Panic.
        !           101:  */
        !           102: panic(a1)
        !           103: char *a1;
        !           104: {
        !           105:        static panflag;
        !           106: 
        !           107:        if (panflag++ == 0) {
        !           108:                printf("Panic: %r", &a1);
        !           109:                putchar('\n');
        !           110:                usync();
        !           111:        }
        !           112:        halt();
        !           113:        --panflag;
        !           114: }
        !           115: 
        !           116: /*
        !           117:  * Print a message from a device driver.
        !           118:  */
        !           119: devmsg(dev, a1)
        !           120: dev_t dev;
        !           121: char *a1;
        !           122: {
        !           123:        printf("(%d,%d): %r", major(dev), minor(dev), &a1);
        !           124:        printf("\n");
        !           125: }

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