Re: [uml-devel] [PATCH 1/1] system call notification with self_ptrace

[Pierre Morel <pmorel@linux.vnet.ibm.com>]

Hi Dave,

Dave Hansen wrote:
> On Mon, 2008-09-08 at 14:02 +0200, Pierre Morel wrote:
>   
>> +       if (is_self_ptracing(regs->gprs[2])) {
>> +               if (!entryexit) {
>> +                       struct siginfo info;
>> +
>> +                       memset(&info, 0, sizeof(struct siginfo));
>> +                       info.si_signo = SIGSYS;
>> +                       info.si_code = SYS_SYSCALL;
>> +                       info.si_errno = regs->gprs[2];
>> +                       info.si_addr = (void *)regs->orig_gpr2;
>> +                       send_sig_info(SIGSYS, &info, current);
>> +                       regs->gprs[2] = -1;
>> +               }
>> +               return;
>> +       }
>>     
>
> I see you didn't like my suggestions for consolidating some of these
> repetitive code bits across all the architectures.  Did you give that a
>   
I have read your suggestion, but the actual ptrace() implementation uses 
explicit reference to the different architecture dependent registers and 
I think that this portion of code is more readable if the patch keeps 
the actual conventions used by Roland.
> a shot?  Would you like me to produce a patch on top of what you have
> here before this gets merged into mm?
>   
No Dave, thank you.

regards,

Pierre

> -- Dave
>
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>   


-- 
=============
Pierre Morel
RTOS and Embedded Linux


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