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| Rev | Author | Line No. | Line |
|---|---|---|---|
| 553 | serge | 1 | /**************************************************************************** |
| 2 | * |
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| 3 | * Open Watcom Project |
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| 4 | * |
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| 5 | * Portions Copyright (c) 1983-2002 Sybase, Inc. All Rights Reserved. |
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| 6 | * |
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| 7 | * ======================================================================== |
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| 8 | * |
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| 9 | * This file contains Original Code and/or Modifications of Original |
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| 10 | * Code as defined in and that are subject to the Sybase Open Watcom |
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| 11 | * Public License version 1.0 (the 'License'). You may not use this file |
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| 12 | * except in compliance with the License. BY USING THIS FILE YOU AGREE TO |
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| 13 | * ALL TERMS AND CONDITIONS OF THE LICENSE. A copy of the License is |
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| 14 | * provided with the Original Code and Modifications, and is also |
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| 15 | * available at www.sybase.com/developer/opensource. |
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| 16 | * |
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| 17 | * The Original Code and all software distributed under the License are |
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| 18 | * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER |
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| 19 | * EXPRESS OR IMPLIED, AND SYBASE AND ALL CONTRIBUTORS HEREBY DISCLAIM |
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| 20 | * ALL SUCH WARRANTIES, INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF |
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| 21 | * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR |
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| 22 | * NON-INFRINGEMENT. Please see the License for the specific language |
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| 23 | * governing rights and limitations under the License. |
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| 24 | * |
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| 25 | * ======================================================================== |
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| 26 | * |
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| 27 | * Description: Implementation of memmove_s() - bounds-checking memmove(). |
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| 28 | * |
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| 29 | ****************************************************************************/ |
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| 30 | |||
| 31 | |||
| 32 | #include "variety.h" |
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| 33 | #include "saferlib.h" |
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| 34 | #include "widechar.h" |
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| 35 | #include |
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| 36 | #include |
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| 37 | #include "xstring.h" |
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| 38 | |||
| 39 | _WCRTLINK errno_t __F_NAME(memmove_s,wmemmove_s)( VOID_WC_TYPE * __restrict s1, |
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| 40 | rsize_t s1max, |
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| 41 | const VOID_WC_TYPE * __restrict s2, |
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| 42 | rsize_t n ) |
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| 43 | /*******************************************************************************/ |
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| 44 | { |
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| 45 | errno_t rc = -1; |
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| 46 | const char *msg; |
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| 47 | |||
| 48 | |||
| 49 | // Verify runtime-constraints |
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| 50 | // s1 not NULL |
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| 51 | // s2 not NULL |
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| 52 | // s1max <= RSIZE_MAX |
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| 53 | // n <= RSIZE_MAX |
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| 54 | // n <= s1max |
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| 55 | if( __check_constraint_nullptr_msg( msg, s1 ) && |
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| 56 | __check_constraint_nullptr_msg( msg, s2 ) && |
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| 57 | __check_constraint_maxsize_msg( msg, s1max ) && |
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| 58 | __check_constraint_maxsize_msg( msg, n ) && |
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| 59 | __check_constraint_a_gt_b_msg( msg, n, s1max ) ) { |
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| 60 | |||
| 61 | /* now it's safe to use memmove */ |
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| 62 | __F_NAME(memmove,wmemmove)( s1, s2, n ); |
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| 63 | rc = 0; |
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| 64 | } else { |
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| 65 | // Runtime-constraints violated, zero out destination array |
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| 66 | if( (s1 != NULL) && __lte_rsizmax( s1max ) ) { |
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| 67 | __F_NAME(memset,wmemset)( s1, 0, s1max ); |
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| 68 | } |
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| 69 | // Now call the handler |
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| 70 | __rtct_fail( __func__, msg, NULL ); |
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| 71 | } |
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| 72 | |||
| 73 | return( rc ); |
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| 74 | } |