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Annotation of coherent/d/kernel/USRSRC/coh/misc.c, revision 1.1.1.1

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                     12:  *     An unpublished work by Mark Williams Company, Chicago.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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