Re: File open/create attibutes.

[Alan Cox]

> If a file exists with attributes, 0644, and it is opened with truncate
> and create with different attributes, it doesn't get those attributes.
> It's only if the file doesn't exist at all that it gets created with
> the new attributes.

This is correct behaviour. See IEEE Std 1003.1-2001. Its explicitly 
specified that "If the file exists and is a regular file, and the file
is successfully opened O_RDWR or O_WRONLY, its length shall be truncated
to 0, and the mode and owner shall be unchanged"