Joshua Hudson <[email protected]> wrote:
> On 7/20/06, Irfan Habib <[email protected]> wrote:
>> I recently met a kernel janitor, who told me that intercepting system
>> calls is undesirable, why?
>
> I'll bite.
>
> You intercept. Somebody else intercepts. You want to stop intercepting.
Use a double-linked list.
Having a mechanism to intercept syscalls will slow down syscall processing,
and there was no legit user in the history of linux. If you need something
like that, there is ptrace.
> For this reason, anybody who intercepts a system call must be compiled
> in,
No, but they may need to be compiled in for other reasons.
> and if two intercept the same system call, than the link order
> dictates behavior.
>
> Obviously not desirable.
ACK.
--
Ich danke GMX dafür, die Verwendung meiner Adressen mittels per SPF
verbreiteten Lügen zu sabotieren.
http://david.woodhou.se/why-not-spf.html
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