Bora assumed offset to be 0 if no offset pointer is given. it is not true. in this case file descripter's reading offset will be used (in linux), which is the update.

In D19917#508903, @emaste wrote:

So,
on 64-bit ABIs (amd64 linux, arm64) we have just linux_sendfile which has (64-bit) l_loff_t *offset.
on 32-bit ABIs (amd64 linux32, i386, arm) we have linux_sendfile which has a 32-bit *offset and linux_sendfile64 which has 64-bit *offset.

fix whitespace issue

added (edited) sys calls for amd64/linux, amd64/linux32, and especially arm/linux, arm64/linux, i386/linux. some of these folders already have the syscalls defined, in which case DUMMY were removed.

Fixed a whitespace issue

Implementing sendfile64.

Just landed here. ~