~drizzle-trunk/drizzle/development

/* Copyright (C) 2000 MySQL AB

   This program is free software; you can redistribute it and/or modify

   it under the terms of the GNU General Public License as published by

   the Free Software Foundation; version 2 of the License.

   This program is distributed in the hope that it will be useful,

   but WITHOUT ANY WARRANTY; without even the implied warranty of

   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the

   GNU General Public License for more details.

   You should have received a copy of the GNU General Public License

   along with this program; if not, write to the Free Software

   Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA */

#include "mysys_priv.h"

#include <my_dir.h>

#include "mysys_err.h"

#include <mystrings/m_string.h>

#undef my_rename

	/* On unix rename deletes to file if it exists */

int my_rename(const char *from, const char *to, myf MyFlags)

{

  int error = 0;

#if defined(HAVE_FILE_VERSIONS)

  {				/* Check that there isn't a old file */

    int save_errno;

    MY_STAT my_stat_result;

    save_errno=my_errno;

    if (my_stat(to,&my_stat_result,MYF(0)))

    {

      my_errno=EEXIST;

      error= -1;

      if (MyFlags & MY_FAE+MY_WME)

	my_error(EE_LINK, MYF(ME_BELL+ME_WAITTANG),from,to,my_errno);

      return(error);

    }

    my_errno=save_errno;

  }

#endif

#if defined(HAVE_RENAME)

  if (rename(from,to))

#else

  if (link(from, to) || unlink(from))

#endif

  {

    my_errno=errno;

    error = -1;

    if (MyFlags & (MY_FAE+MY_WME))

      my_error(EE_LINK, MYF(ME_BELL+ME_WAITTANG),from,to,my_errno);

  }

  else if (MyFlags & MY_SYNC_DIR)

  {

#ifdef NEED_EXPLICIT_SYNC_DIR

    /* do only the needed amount of syncs: */

    char dir_from[FN_REFLEN], dir_to[FN_REFLEN];

    size_t dir_from_length, dir_to_length;

    dirname_part(dir_from, from, &dir_from_length);

    dirname_part(dir_to, to, &dir_to_length);

    if (my_sync_dir(dir_from, MyFlags) ||

        (strcmp(dir_from, dir_to) &&

         my_sync_dir(dir_to, MyFlags)))

      error= -1;

#endif

  }

  return(error);

} /* my_rename */