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Re: [PATCH 3/3] linux/x86: sync sys/ptrace.h with Linux 4.14 [BZ #22433]

On Fri, Dec 29, 2017 at 11:13:03AM -0200, Adhemerval Zanella wrote:
> On 27/12/2017 01:46, Dmitry V. Levin wrote:
> > Clone generic linux/sys/ptrace.h, add the following x86-specific
> > __ptrace_request constants: PTRACE_GET_THREAD_AREA,
> > 
> > [BZ #22433]
> > * sysdeps/unix/sysv/linux/x86/sys/ptrace.h: New file.
> Wouldn't be better to avoid code duplication to add a ptrace-arch.h as an
> empty one for generic case and add a x86 with the arch-specific bits?

Maybe, but there are two complications.

First, this x86/bits/ptrace-arch.h would have to contain a part of
enum __ptrace_request definition - are we OK with distributing
such ugly looking arch-specific bits?

Second, there are exceptions, e.g. ia64/sys/ptrace.h includes additional
headers and defines struct __pt_all_user_regs, s390/sys/ptrace.h and
sparc/sys/ptrace.h undefine potentially conflicting PTRACE_* macros -
we would have to #include more arch-specific bits to accommodate them.


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