Re: __ARCH_WANT_SYSCALL_DEPRECATED

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On Wed, 2011-08-24 at 10:25 -0500, Linas Vepstas (Code Aurora) wrote:
> On Wed, Aug 24, 2011 at 10:01:24AM +0800, Guan Xuetao wrote:
> >   For getdents (or other deprecated syscalls), we select getdents64 to
> > replace getdent, though we have not verified it on unicore32 platform.
> 
> Do you have a publically-available version? Have you considered
> submitting it to the FSF?  Have you signed the copyright-transfer
> forms with the FSF?
Firstly, what I said for getdents64 in unicore is just in developing,
not ready yet.
And for glibc part, it need much time to prepare for submitting.

> 
> My goal with the hexagon archiecture is to have the kernel asm/unistd.h
> include asm-generic/unistd.h, and have glibc compile (on hexagon) with
> no further #defines in asm/unistd.h.  This "almost" works today; with
> Chris Metcalf's generic syscall patches for glibc, I am able to compile
> glibc (and pass the glibc test suite). However, I have to #define
> __ARCH_WANT_SYSCALL_DEPRECATED to do this. If I don't, then the 
> getdents syscall fails to compile; I don't know how many others there are.
It's also my goal. And you have walked further than me.
I guess, Chris don't need getdent for tile, since he didn't export the
syscall in kernel.
IMO, it's better to add one syscall instead of
__ARCH_WANT_SYSCALL_DEPRECATED in your own unistd.h:

#define __NR_getdents 1065
#define __ARCH_WANT_SYS_GETDENTS
__SYSCALL(__NR_getdents, sys_getdents)

> 
> As to the "API": I just want to use Arnd's "generic" kernel support;
> that will be the API.  No changing, porting, hacking :-)
> 
> -- Linas
> 

Regards

Guan Xuetao

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