Function my_fopen

mysys/my_fopen.c:41–97

*/

FILE *my_fopen(const char *filename, int flags, myf MyFlags)
{
  FILE *fd;
  char type[5];
  DBUG_ENTER("my_fopen");
  DBUG_PRINT("my",("Name: '%s'  flags: %d  MyFlags: %d",
		   filename, flags, MyFlags));

  make_ftype(type,flags);

#ifdef _WIN32
  fd= my_win_fopen(filename, type);
#else
  fd= fopen(filename, type);
#endif
  if (fd != 0)
  {
    /*
      The test works if MY_NFILE < 128. The problem is that fileno() is char
      on some OS (SUNOS). Actually the filename save isn't that important
      so we can ignore if this doesn't work.
    */

    int filedesc= my_fileno(fd);
    if ((uint)filedesc >= my_file_limit)
    {
      thread_safe_increment(my_stream_opened,&THR_LOCK_open);
      DBUG_RETURN(fd);				/* safeguard */
    }
    mysql_mutex_lock(&THR_LOCK_open);
    if ((my_file_info[filedesc].name= (char*)
	 my_strdup(filename,MyFlags)))
    {
      my_stream_opened++;
      my_file_total_opened++;
      my_file_info[filedesc].type= STREAM_BY_FOPEN;
      mysql_mutex_unlock(&THR_LOCK_open);
      DBUG_PRINT("exit",("stream: 0x%lx", (long) fd));
      DBUG_RETURN(fd);
    }
    mysql_mutex_unlock(&THR_LOCK_open);
    (void) my_fclose(fd,MyFlags);
    my_errno=ENOMEM;
  }
  else
    my_errno=errno;
  DBUG_PRINT("error",("Got error %d on open",my_errno));
  if (MyFlags & (MY_FFNF | MY_FAE | MY_WME))
  {
    char errbuf[MYSYS_STRERROR_SIZE];
    my_error((flags & O_RDONLY) || (flags == O_RDONLY ) ? EE_FILENOTFOUND :
             EE_CANTCREATEFILE,
             MYF(ME_BELL+ME_WAITTANG), filename,
             my_errno, my_strerror(errbuf, sizeof(errbuf), my_errno));
  }
  DBUG_RETURN((FILE*) 0);
} /* my_fopen */