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Annotation of coherent/d/PS2_KERNEL/coh.386/misc.c, revision 1.1

1.1     ! root        1: /* $Header: /kernel/kersrc/coh.386/RCS/misc.c,v 1.2 92/08/04 12:33:36 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        !            12:  *     An unpublished work by Mark Williams Company, Chicago.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 1.2  92/08/04  12:33:36  bin
        !            21:  * changed for ker 59
        !            22:  * 
        !            23:  * Revision 1.2  92/01/06  11:59:45  hal
        !            24:  * Compile with cc.mwc.
        !            25:  * 
        !            26:  * Revision 1.1        88/03/24  16:14:01      src
        !            27:  * Initial revision
        !            28:  * 
        !            29:  * 87/05/08    Allan Cornish           /usr/src/sys/coh/misc.c
        !            30:  * System code and data segments no longer reported in panic messages.
        !            31:  *
        !            32:  * 87/02/17    Allan Cornish           /usr/src/sys/coh/misc.c
        !            33:  * Panic message now includes system code and data segments.
        !            34:  */
        !            35: #include <sys/coherent.h>
        !            36: #include <acct.h>
        !            37: #include <errno.h>
        !            38: #include <sys/ino.h>
        !            39: #include <sys/stat.h>
        !            40: 
        !            41: #ifdef TRACER
        !            42: extern unsigned t_piggy;
        !            43: #endif
        !            44: 
        !            45: /*
        !            46:  * Copy `n' bytes from `bp1' to `bp2'.
        !            47:  */
        !            48: kkcopy(bp1, bp2, n)
        !            49: register char *bp1;
        !            50: register char *bp2;
        !            51: unsigned n;
        !            52: {
        !            53:        register unsigned n1;
        !            54: 
        !            55:        n1 = n;
        !            56:        if (n1) {
        !            57:                do {
        !            58:                        *bp2++ = *bp1++;
        !            59:                } while (--n1);
        !            60:        }
        !            61:        return (n);
        !            62: }
        !            63: 
        !            64: /*
        !            65:  * Clear the next `n' bytes starting at `bp'.
        !            66:  */
        !            67: kclear(bp, n)
        !            68: register char *bp;
        !            69: register unsigned n;
        !            70: {
        !            71:        if (n) {
        !            72:                do {
        !            73:                        *bp++ = 0;
        !            74:                } while (--n);
        !            75:        }
        !            76: }
        !            77: 
        !            78: /*
        !            79:  * Make sure we are the super user.
        !            80:  */
        !            81: super()
        !            82: {
        !            83:        if (u.u_uid) {
        !            84:                u.u_error = EPERM;
        !            85:                return (0);
        !            86:        }
        !            87:        u.u_flag |= ASU;
        !            88:        return (1);
        !            89: }
        !            90: 
        !            91: /*
        !            92:  * Make sure we are the gived `uid' or the super user.
        !            93:  */
        !            94: owner(uid)
        !            95: {
        !            96:        if (u.u_uid == uid)
        !            97:                return (1);
        !            98:        if (u.u_uid == 0) {
        !            99:                u.u_flag |= ASU;
        !           100:                return (1);
        !           101:        }
        !           102:        u.u_error = EPERM;
        !           103:        return (0);
        !           104: }
        !           105: 
        !           106: /*
        !           107:  * Panic.
        !           108:  */
        !           109: panic(a1)
        !           110: char *a1;
        !           111: {
        !           112:        static panflag;
        !           113:        sphi();
        !           114: 
        !           115: #ifdef TRACER
        !           116:        if ( t_piggy & 0x80 ) {
        !           117:                if (panflag++ == 0) {
        !           118:                        printf("Panic: %r", &a1);
        !           119:                        putchar('\n');
        !           120:                        usync();
        !           121:                }
        !           122:                printf("relax! It really isn't so bad.\n");
        !           123:        } else {
        !           124:                if (panflag++ == 0) {
        !           125:                        printf("Panic: %r", &a1);
        !           126:                        putchar('\n');
        !           127:                        for (;;);
        !           128:                        usync();
        !           129:                }
        !           130:                halt();
        !           131:        }
        !           132: #else
        !           133:        if (panflag++ == 0) {
        !           134:                printf("Panic: %r", &a1);
        !           135:                putchar('\n');
        !           136:                for (;;);
        !           137:                usync();
        !           138:        }
        !           139:        halt();
        !           140: #endif /* TRACER */
        !           141: 
        !           142:        --panflag;
        !           143: }
        !           144: 
        !           145: /*
        !           146:  * Print a message from a device driver.
        !           147:  */
        !           148: devmsg(dev, a1)
        !           149: dev_t dev;
        !           150: char *a1;
        !           151: {
        !           152:        printf("(%d,%d): %r", major(dev), minor(dev), &a1);
        !           153:        printf("\n");
        !           154: }

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