Merge mysql.com:/home/wax/mysql/mysql-4.0

into mysql.com:/home/wax/mysql/mysql-4.0chsize


BitKeeper/etc/logging_ok:
  auto-union

BitKeeper/etc/logging_ok

@@ -112,6 +112,7 @@ vva@eagle.mysql.r18.ru
 vva@genie.(none)
 walrus@kishkin.ru
 walrus@mysql.com
+wax@mysql.com
 worm@altair.is.lan
 zak@balfor.local
 zak@linux.local

include/config-win.h

@@ -276,6 +276,7 @@ inline double ulonglong2double(ulonglong value)
 #define HAVE_ISAM		/* We want to have support for ISAM in 4.0 */
 #define HAVE_QUERY_CACHE
 #define SPRINTF_RETURNS_INT
+#define HAVE_SETFILEPOINTER     /* SetFilePointer function for huge files */
 
 #ifdef NOT_USED
 #define HAVE_SNPRINTF		/* Gave link error */

mysys/my_chsize.c

@@ -36,14 +36,22 @@
     0	Ok
     1	Error 
 */
-
 int my_chsize(File fd, my_off_t newlength, int filler, myf MyFlags)
 {
   DBUG_ENTER("my_chsize");
   DBUG_PRINT("my",("fd: %d  length: %lu  MyFlags: %d",fd,(ulong) newlength,
 		   MyFlags));
+  /* if file is shorter, expand with null, else fill unused part with null */
+  {
+    my_off_t oldsize;
+    char buff[IO_SIZE];
+
+    oldsize = my_seek(fd, 0L, MY_SEEK_END, MYF(MY_WME+MY_FAE));
+    DBUG_PRINT("info",("old_size: %ld", (ulong) oldsize));
 
 #ifdef HAVE_CHSIZE
+    if (oldsize > newlength || filler == 0)
+    {
       if (chsize(fd,(off_t) newlength))
       {
         DBUG_PRINT("error",("errno: %d",errno));
@@ -52,17 +60,31 @@ int my_chsize(File fd, my_off_t newlength, int filler, myf MyFlags)
           my_error(EE_CANT_CHSIZE,MYF(ME_BELL+ME_WAITTANG),errno);
         DBUG_RETURN(1);
       }
+      else
+      {
+        if (filler == 0)
           DBUG_RETURN(0);
-#else
-  /* if file is shorter, expand with null, else fill unused part with null */
+      }
+    }
+#elif defined(HAVE_SETFILEPOINTER)
+    if (oldsize > newlength)
     {
-    my_off_t oldsize;
-    char buff[IO_SIZE];
-
-    oldsize = my_seek(fd, 0L, MY_SEEK_END, MYF(MY_WME+MY_FAE));
-    DBUG_PRINT("info",("old_size: %ld", (ulong) oldsize));
-
-#ifdef HAVE_FTRUNCATE
+      LARGE_INTEGER new_length;
+      HANDLE win_file;      
+      win_file= (HANDLE)_get_osfhandle(fd);
+      new_length.QuadPart = newlength;
+      if (SetFilePointerEx(win_file,new_length,NULL,FILE_BEGIN))
+      {
+        if (SetEndOfFile(win_file))
+          DBUG_RETURN(0);   
+      } 
+      DBUG_PRINT("error",("errno: %d",errno));
+      my_errno=errno;
+      if (MyFlags & MY_WME)
+        my_error(EE_CANT_CHSIZE,MYF(ME_BELL+ME_WAITTANG),errno);
+      DBUG_RETURN(1);
+    }
+#elif defined(HAVE_FTRUNCATE)
     if (oldsize > newlength)
     {
       if (ftruncate(fd, (off_t) newlength))
@@ -99,5 +121,6 @@ int my_chsize(File fd, my_off_t newlength, int filler, myf MyFlags)
     DBUG_PRINT("error",("errno: %d",my_errno));
     DBUG_RETURN(1);
   }
-#endif
 } /* my_chsize */
+
+