It is quite frankly ridiculous how much work it takes to wire up a new system call. It should be possible to do it across architectures without all this crap.
On April 9, 2014 11:23:24 AM PDT, Theodore Ts'o <tytso@xxxxxxx> wrote:
>On Wed, Apr 09, 2014 at 07:48:32PM +0200, Geert Uytterhoeven wrote:
>> >
>> > I'm missing context here, but as an x86 maintainer I have no
>intention
>> > of allowing system calls that aren't x86-specific to be added to
>x86-64
>> > only.
>>
>> commit 520c8b16505236fc82daa352e6c5e73cd9870cff
>> Author: Miklos Szeredi <mszeredi@xxxxxxx>
>> Date: Tue Apr 1 17:08:42 2014 +0200
>>
>> vfs: add renameat2 syscall
>>
>> It was added to arch/x86/syscalls/syscall_64.tbl only.
>
>To be fair, part of the problem is that we don't have good
>documentation about best practices in what people should do if adding
>new system calls. (i.e., creating a man page and pulling in Michael
>Kerrisk, adding tests, wiring up both x86_64 and i386, sending mail to
>linux-arch, the scripts/checksyscalls.sh script, etc.)
>
>I'll confess to being ignorant about the checksyscalls.sh script, and
>while I had known about the existence of the linux-arch list, I had
>forgotten about it, so if I had tried to add a new system call, it's
>likely I would have missed at one or more of these steps.
>
> - Ted
>
>
>
>
>>
>> Gr{oetje,eeting}s,
>>
>> Geert
>>
>> --
>> Geert Uytterhoeven -- There's lots of Linux beyond ia32 --
>geert@xxxxxxxxxxxxxx
>>
>> In personal conversations with technical people, I call myself a
>hacker. But
>> when I'm talking to journalists I just say "programmer" or something
>like that.
>> -- Linus Torvalds
--
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