rfork problem

[Igor Serikov]

   David,

Is it okay to have a condition that can be created by a mortal user and 
then cannot be changed by the root? The waiting process cannot be killed 
and would keep "waiting" till system reboot.

I do not think it is a good idea to make ppwait state uninterruptible in 
any case.

As to RFNOWAIT, I believe that the correct behavior is to detach after 
leaving ppwait.


David Schultz wrote:
> On Mon, Nov 03, 2003, Igor Serikov wrote:
> 
>>  Hello,
>>
>>Combining flags RFNOWAIT and RFPPWAIT in rfork(2) under 4.6-RELEASE 
>>makes the parent process sleeping on channel "ppwait" forever.
> 
> 
> RFPPWAIT tells rfork() to wait for the child to exit, and RFNOWAIT
> tells rfork() to detach the child such that it never tells the
> parent when it exits.  So you're getting exactly what you asked
> for, as silly as it may be.
> 
>