~drizzle-trunk/drizzle/development

/*

  Copyright (C) 2010 Zimin

  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; either version 2

  of the License, or (at your option) any later version.

  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., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.

*/

#ifndef PLUGIN_FILESYSTEM_ENGINE_UTILITY_H

#define PLUGIN_FILESYSTEM_ENGINE_UTILITY_H

static inline ssize_t write_in_all(int fd, const void *buf, size_t count)

{

  const char *p= (const char*)buf;

  ssize_t total= 0;

  while (count > 0)

  {

    ssize_t len;

    while ((len= ::write(fd, p, count)) < 0 &&

           (errno == EINTR || errno == EAGAIN))

      ;

    if (len < 0)

      return -1;

    if (len == 0)

    {

      errno= ENOSPC;

      return -1;

    }

    p+= len;

    total+= len;

    count-= len;

  }

  return total;

}

#endif /* PLUGIN_FILESYSTEM_ENGINE_UTILITY_H */