release/src/router/mysql/storage/myisammrg/myrg_create.c

   1 /*
   2    Copyright (c) 2000, 2001, 2005-2007 MySQL AB, 2009 Sun Microsystems, Inc.
   3    Use is subject to license terms.
   4
   5    This program is free software; you can redistribute it and/or modify
   6    it under the terms of the GNU General Public License as published by
   7    the Free Software Foundation; version 2 of the License.
   8
   9    This program is distributed in the hope that it will be useful,
  10    but WITHOUT ANY WARRANTY; without even the implied warranty of
  11    MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  12    GNU General Public License for more details.
  13
  14    You should have received a copy of the GNU General Public License
  15    along with this program; if not, write to the Free Software
  16    Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301  USA
  17 */
  18
  19 /* Create a MYMERGE_-file */
  20
  21 #include "myrg_def.h"
  22
  23         /* create file named 'name' and save filenames in it
  24            table_names should be NULL or a vector of string-pointers with
  25            a NULL-pointer last
  26            */
  27
  28 int myrg_create(const char *name, const char **table_names,
  29                 uint insert_method, my_bool fix_names)
  30 {
  31   int save_errno;
  32   uint errpos;
  33   File file;
  34   char buff[FN_REFLEN],*end;
  35   DBUG_ENTER("myrg_create");
  36
  37   errpos=0;
  38   if ((file = my_create(fn_format(buff,name,"",MYRG_NAME_EXT,
  39                                   MY_UNPACK_FILENAME|MY_APPEND_EXT),0,
  40        O_RDWR | O_EXCL | O_NOFOLLOW,MYF(MY_WME))) < 0)
  41     goto err;
  42   errpos=1;
  43   if (table_names)
  44   {
  45     for ( ; *table_names ; table_names++)
  46     {
  47       strmov(buff,*table_names);
  48       if (fix_names)
  49         fn_same(buff,name,4);
  50       *(end=strend(buff))='\n';
  51       end[1]=0;
  52       if (my_write(file,(uchar*) buff,(uint) (end-buff+1),
  53                    MYF(MY_WME | MY_NABP)))
  54         goto err;
  55     }
  56   }
  57   if (insert_method != MERGE_INSERT_DISABLED)
  58   {
  59     end=strxmov(buff,"#INSERT_METHOD=",
  60                 get_type(&merge_insert_method,insert_method-1),"\n",NullS);
  61     if (my_write(file, (uchar*) buff,(uint) (end-buff),MYF(MY_WME | MY_NABP)))
  62         goto err;
  63   }
  64   if (my_close(file,MYF(0)))
  65     goto err;
  66   DBUG_RETURN(0);
  67
  68 err:
  69   save_errno=my_errno ? my_errno : -1;
  70   switch (errpos) {
  71   case 1:
  72     VOID(my_close(file,MYF(0)));
  73   }
  74   DBUG_RETURN(my_errno=save_errno);
  75 } /* myrg_create */