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Annotation of sys/arch/powerpc/powerpc/copystr.c, Revision 1.1.1.1

1.1       nbrk        1: /*     $OpenBSD: copystr.c,v 1.8 2003/10/15 02:43:09 drahn Exp $       */
                      2:
                      3: /*-
                      4:  * Copyright (C) 1995 Wolfgang Solfrank.
                      5:  * Copyright (C) 1995 TooLs GmbH.
                      6:  * All rights reserved.
                      7:  *
                      8:  * Redistribution and use in source and binary forms, with or without
                      9:  * modification, are permitted provided that the following conditions
                     10:  * are met:
                     11:  * 1. Redistributions of source code must retain the above copyright
                     12:  *    notice, this list of conditions and the following disclaimer.
                     13:  * 2. Redistributions in binary form must reproduce the above copyright
                     14:  *    notice, this list of conditions and the following disclaimer in the
                     15:  *    documentation and/or other materials provided with the distribution.
                     16:  * 3. All advertising materials mentioning features or use of this software
                     17:  *    must display the following acknowledgement:
                     18:  *     This product includes software developed by TooLs GmbH.
                     19:  * 4. The name of TooLs GmbH may not be used to endorse or promote products
                     20:  *    derived from this software without specific prior written permission.
                     21:  *
                     22:  * THIS SOFTWARE IS PROVIDED BY TOOLS GMBH ``AS IS'' AND ANY EXPRESS OR
                     23:  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
                     24:  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
                     25:  * IN NO EVENT SHALL TOOLS GMBH BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
                     26:  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
                     27:  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS;
                     28:  * OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
                     29:  * WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR
                     30:  * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
                     31:  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
                     32:  */
                     33: #include <sys/param.h>
                     34: #include <sys/errno.h>
                     35: #include <sys/systm.h>
                     36:
                     37: /*
                     38:  * Emulate copystr.
                     39:  */
                     40: int
                     41: copystr(const void *kfaddr, void *kdaddr, size_t len, size_t *done)
                     42: {
                     43:        u_char *kfp = (u_char *)kfaddr;
                     44:        u_char *kdp = kdaddr;
                     45:        size_t l;
                     46:
                     47:        for (l = 0; len-- > 0; l++) {
                     48:                if (!(*kdp++ = *kfp++)) {
                     49:                        if (done)
                     50:                                *done = l + 1;
                     51:                        return (0);
                     52:                }
                     53:        }
                     54:        if (done)
                     55:                *done = l;
                     56:        return (ENAMETOOLONG);
                     57: }