[PATCH-0.9.33] common/pread_write.c: unbreak on archs without __NR_pread64

[Peter Korsgaard]

>>>>> "Peter" == Peter Korsgaard <peter at korsgaard.com> writes:

Hi,

 Peter> Some archs (avr32 in particular) still doesn't define __NR_pread64, so
 Peter> we should fall back to __NR_pread if it isn't available.

 Peter> The code nicely checks for it, but then ends up hard coding the syscall
 Peter> to use __NR_pread64 afterwards, rendering the check useless. Fix it by
 Peter> using the result of the test instead.

I noticed another critical issue on ARM EABI. The use of
__LONG_LONG_PAIR for the offset doesn't take alignment requirement of
64bit parameters on EABI into consideration, so the offset is off by one
register :/

https://lkml.org/lkml/2006/1/12/175

How should that be handled?

-- 
Bye, Peter Korsgaard