Messages in this thread | | | Date | Thu, 17 Jun 2010 21:49:15 +0100 | From | Alan Cox <> | Subject | Re: [PATCH] tty: Add EXTPROC support for LINEMODE |
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> >> For Alpha this value should match OSF if possible. > > OSF didn't define this flag, nor did it assign that particular bit to any > purpose. Is that good enough?
Fine
> > Are you suggesting that this is completely unfixable/unworkable? Would it be > > sufficient to use kernel_termios_to_user_termios() ?
I don't see a way to fix it sanely
> > > Actually using kernel_termios_to_user_termios_1(). In all supported > architectures this structure is basically aligned with but smaller than the > userland struct termios.
The relationship isn't quite so simple and it may change in the future, so this seems to be a very bad idea. Besides which syscalls are *cheap* so simply notifying someone to reread the terminal data they care about should be fine. In that sense it seems SVR4 got it right.
Alan
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