[hbelusca] 61923: [CMLIB] Use a #define instead of the magic 31.

Author: hbelusca
Date: Sun Feb  2 16:59:03 2014
New Revision: 61923

URL: http://svn.reactos.org/svn/reactos?rev=61923&view=rev
Log:
[CMLIB]
Use a #define instead of the magic 31.

Modified:
    trunk/reactos/lib/cmlib/hivedata.h
    trunk/reactos/lib/cmlib/hiveinit.c

Modified: trunk/reactos/lib/cmlib/hivedata.h
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/lib/cmlib/hivedata.h?rev=61...
==============================================================================
--- trunk/reactos/lib/cmlib/hivedata.h	[iso-8859-1] (original)
+++ trunk/reactos/lib/cmlib/hivedata.h	[iso-8859-1] Sun Feb  2 16:59:03 2014
@@ -107,6 +107,8 @@
  * On-disk header for registry hive file.
  */

+#define HIVE_FILENAME_MAXLEN           31
+
 typedef struct _HBASE_BLOCK
 {
    /* Hive identifier "regf" (0x66676572) */
@@ -146,7 +148,7 @@

/* Last 31 UNICODE characters, plus terminating NULL character,
       of the full name of the hive file */
-   WCHAR FileName[32];
+   WCHAR FileName[HIVE_FILENAME_MAXLEN + 1];

ULONG Reserved1[99];

Modified: trunk/reactos/lib/cmlib/hiveinit.c
URL: http://svn.reactos.org/svn/reactos/trunk/reactos/lib/cmlib/hiveinit.c?rev=61...
==============================================================================
--- trunk/reactos/lib/cmlib/hiveinit.c	[iso-8859-1] (original)
+++ trunk/reactos/lib/cmlib/hiveinit.c	[iso-8859-1] Sun Feb  2 16:59:03 2014
@@ -118,7 +118,7 @@
    /* Copy the 31 last characters of the hive file name if any */
    if (FileName)
    {
-      if (FileName->Length / sizeof(WCHAR) <= 31)
+      if (FileName->Length / sizeof(WCHAR) <= HIVE_FILENAME_MAXLEN)
       {
          RtlCopyMemory(BaseBlock->FileName,
                        FileName->Buffer,
@@ -127,12 +127,13 @@
       else
       {
          RtlCopyMemory(BaseBlock->FileName,
-                       FileName->Buffer + FileName->Length / sizeof(WCHAR) - 31,
-                       31 * sizeof(WCHAR));
+                       FileName->Buffer +
+                       FileName->Length / sizeof(WCHAR) - HIVE_FILENAME_MAXLEN,
+                       HIVE_FILENAME_MAXLEN * sizeof(WCHAR));
       }

/* NULL-terminate */
-      BaseBlock->FileName[31] = L'\0';
+      BaseBlock->FileName[HIVE_FILENAME_MAXLEN] = L'\0';
    }

BaseBlock->CheckSum = HvpHiveHeaderChecksum(BaseBlock);