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Re: Official Linux system wrapper library?
- From: Szabolcs Nagy <Szabolcs dot Nagy at arm dot com>
- To: David Newall <glibc at davidnewall dot com>, Florian Weimer <fweimer at redhat dot com>, Daniel Colascione <dancol at google dot com>
- Cc: nd <nd at arm dot com>, "Michael Kerrisk (man-pages)" <mtk dot manpages at gmail dot com>, linux-kernel <linux-kernel at vger dot kernel dot org>, Joel Fernandes <joelaf at google dot com>, Linux API <linux-api at vger dot kernel dot org>, Willy Tarreau <w at 1wt dot eu>, Vlastimil Babka <vbabka at suse dot cz>, Carlos O'Donell <carlos at redhat dot com>, "libc-alpha at sourceware dot org" <libc-alpha at sourceware dot org>
- Date: Fri, 23 Nov 2018 15:23:30 +0000
- Subject: Re: Official Linux system wrapper library?
- References: <CAKOZuesB4R=dCz4merWQN0FSCGrXmOgUUr4ienSbStBJguNv8g@mail.gmail.com> <bbc12da5-830e-99a7-95e3-d9da42947dc9@gmail.com> <877ehjx447.fsf@oldenburg.str.redhat.com> <CAKOZues5SEESpJU=6MDTrPXTA1KTZFGNQE4Lw4t0fO-WBTU62w@mail.gmail.com> <875zx2vhpd.fsf@oldenburg.str.redhat.com> <CAKOZuetdgk1QYhx1538-98rFpogMin=8DkPnCtU9_=ip23Vk7w@mail.gmail.com> <87efbbvrx9.fsf@oldenburg.str.redhat.com> <a50dbc52-b5e8-6684-508d-b96ad8d70d4f@davidnewall.com>
On 23/11/18 14:11, David Newall wrote:
> On 24/11/18 12:04 am, Florian Weimer wrote:
>> But socketcall does not exist on all architectures. Neither does
>> getpid, it's called getxpid on some architectures.
>> ...
>> I think it would be a poor approach to expose application developers to
>> these portability issues. We need to abstract over these differences at
>> a certain layer, and applications are too late.
>
> Interesting. I think the opposite. I think exposing the OS's interfaces is exactly what a c-library should do. It might also provide
> alternative interfaces that work consistently across different platforms, but in addition to, not instead of the OS interface.
you don't understand the point of the c language if you think so.