Clib string & memory functions

git-svn-id: svn://kolibrios.org@553 a494cfbc-eb01-0410-851d-a64ba20cac60
2007-06-26 00:54:22 +00:00
parent d5f66e011c
commit 836c97f0ac
162 changed files with 11855 additions and 0 deletions
--- a/watcom/trunk/clib/string/strcpy_s.c
+++ b/watcom/trunk/clib/string/strcpy_s.c
@@ -0,0 +1,76 @@
+/****************************************************************************
+*
+*                            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 strcpy_s() - bounds-checking strcpy().
+*
+****************************************************************************/
+
+
+#include "variety.h"
+#include "saferlib.h"
+#include "widechar.h"
+#include <string.h>
+#include <wchar.h>
+
+
+_WCRTLINK errno_t __F_NAME(strcpy_s,wcscpy_s)( CHAR_TYPE * __restrict s1,
+                          rsize_t s1max, const CHAR_TYPE * __restrict s2 )
+/************************************************************************/
+{
+    errno_t     rc = -1;
+    const char  *msg;
+
+    // strnlen_s is safe to use as it has no rt constraints
+    rsize_t     s2len = __F_NAME(strnlen_s,wcsnlen_s)( s2, s1max );
+
+    // Verify runtime-constraints
+    // s1 not NULL
+    // s2 not NULL
+    // s1max <= RSIZE_MAX
+    // s1max != 0
+    // s1max > strnlen_s( s2, s1max )
+    // s1 s2 no overlap
+    if( __check_constraint_nullptr_msg( msg, s1 ) &&
+        __check_constraint_nullptr_msg( msg, s2 ) &&
+        __check_constraint_maxsize_msg( msg, s1max ) &&
+        __check_constraint_zero_msg( msg, s1max ) &&
+        __check_constraint_a_gt_b_msg( msg, s2len, s1max - 1 ) &&
+        __check_constraint_overlap_msg( msg, s1, s1max, s2, s2len ) ) {
+
+         while( *s1++ = *s2++)
+            ;
+
+         rc = 0;
+    } else {
+        // Runtime-constraints violated, make destination string empty
+        if( (s1 != NULL) && (s1max > 0) && __lte_rsizmax( s1max ) ) {
+            s1[0] = NULLCHAR;
+        }
+        // Now call the handler
+        __rtct_fail( __func__, msg, NULL );
+    }
+    return( rc );
+}