| 0,0 → 1,74 |
|---|
| /**************************************************************************** |
| * |
| * Open Watcom Project |
| * |
| * Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved. |
| * |
| * ======================================================================== |
| * |
| * This file contains Original Code and/or Modifications of Original |
| * Code as defined in and that are subject to the Sybase Open Watcom |
| * Public License version 1.0 (the 'License'). You may not use this file |
| * except in compliance with the License. BY USING THIS FILE YOU AGREE TO |
| * ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is |
| * provided with the Original Code and Modifications, and is also |
| * available at www.sybase.com/developer/opensource. |
| * |
| * The Original Code and all software distributed under the License are |
| * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
| * EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM |
| * ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF |
| * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR |
| * NON-INFRINGEMENT. Please see the License for the specific language |
| * governing rights and limitations under the License. |
| * |
| * ======================================================================== |
| * |
| * Description: Implementation of memmove_s() - bounds-checking memmove(). |
| * |
| ****************************************************************************/ |
| |
| |
| #include "variety.h" |
| #include "saferlib.h" |
| #include "widechar.h" |
| #include <string.h> |
| #include <wchar.h> |
| #include "xstring.h" |
| |
| _WCRTLINK errno_t __F_NAME(memmove_s,wmemmove_s)( VOID_WC_TYPE * __restrict s1, |
| rsize_t s1max, |
| const VOID_WC_TYPE * __restrict s2, |
| rsize_t n ) |
| /*******************************************************************************/ |
| { |
| errno_t rc = -1; |
| const char *msg; |
| |
| |
| // Verify runtime-constraints |
| // s1 not NULL |
| // s2 not NULL |
| // s1max <= RSIZE_MAX |
| // n <= RSIZE_MAX |
| // n <= s1max |
| if( __check_constraint_nullptr_msg( msg, s1 ) && |
| __check_constraint_nullptr_msg( msg, s2 ) && |
| __check_constraint_maxsize_msg( msg, s1max ) && |
| __check_constraint_maxsize_msg( msg, n ) && |
| __check_constraint_a_gt_b_msg( msg, n, s1max ) ) { |
| |
| /* now it's safe to use memmove */ |
| __F_NAME(memmove,wmemmove)( s1, s2, n ); |
| rc = 0; |
| } else { |
| // Runtime-constraints violated, zero out destination array |
| if( (s1 != NULL) && __lte_rsizmax( s1max ) ) { |
| __F_NAME(memset,wmemset)( s1, 0, s1max ); |
| } |
| // Now call the handler |
| __rtct_fail( __func__, msg, NULL ); |
| } |
| |
| return( rc ); |
| } |