Description
resource
dio_open ( string filename, int flags [, int mode])
dio_open() opens a file and returns a new file
descriptor for it, or -1 if any error occurred. If
flags is O_CREAT, optional third parameter
mode will set the mode of the file
(creation permissions). The flags
parameter can be one of the following options:
O_RDONLY - opens the file for read access
O_WRONLY - opens the file for write access
O_RDWR - opens the file for both reading and
writing
The
flags parameter can also include any
combination of the following flags:
O_CREAT - creates the file, if it doesn't already exist
O_EXCL - if both, O_CREAT and O_EXCL are set,
dio_open() fails, if file already exists
O_TRUNC - if file exists, and its opened for write access,
file will be truncated to zero length.
O_APPEND - write operations write data at the
end of file
O_NONBLOCK -
sets non blocking mode
