Re: [patch 0/3] add rt_tgsigqueueinfo syscall -V2

[Michael Kerrisk]

On Wed, Apr 1, 2009 at 2:25 PM, Roland McGrath <roland@xxxxxxxxxx> wrote:
>> 1) With rt_siqueueinfo(), we can get the PID (TGID) of the sender,
>
> No.  You can get whatever the caller put into the siginfo_t.
> Only the si_signo field is set by the kernel.
>
>> With rt_tgsigqueueinfo(), [...]
>
> You still get whatever the caller put into the siginfo_t.

Yes.  I wrote the text awkwardly, but I think the point was clear.  In
my point 1, I wrongly thought we needed a way to get the sender's TID
to the receiver, and you pointed out that sigval could do the job.  In
my point 2, I made the same observation as you just made above.

Thanks,

Michael


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Michael Kerrisk
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