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Annotation of sys/arch/powerpc/powerpc/copystr.c, Revision 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: }