Re: [Question] New mmap64 syscall?

Pavel Machek
2017-01-12T21:51:28Z

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On Thu 2017-01-12 17:13:25, Florian Weimer wrote:
> On 01/03/2017 09:54 PM, Pavel Machek wrote:
> >...actually, with strace and batched interface, it will be impossible
> >to see what is going on because of races. So I'm not sure if I like
> >the batched interface at all...
>
> I'm not sure if I understand this problem.
>
> ioctl, fcntl, most socket system calls, even open all have this problem as
> well, right?

Yes, ioctl() and similar are problematic. Still it is possible to
implement secure sandbox using ptrace. Dealing with indirect mmap()
would difficult AFAICT.

Pavel

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