Re: [PATCH] BZ #14782 system async cancellation

[Rich Felker <dalias at aerifal dot cx>]

On Thu, Nov 01, 2012 at 08:31:02AM +0100, Andreas Schwab wrote:
> Rich Felker <dalias@aerifal.cx> writes:
> 
> > -/* We have to and actually can handle cancelable system().  The big
> > -   problem: we have to kill the child process if necessary.  To do
> > -   this a cleanup handler has to be registered and is has to be able
> > -   to find the PID of the child.  The main problem is to reliable have
> > -   the PID when needed.  It is not necessary for the parent thread to
> > -   return.  It might still be in the kernel when the cancellation
> > -   request comes.  Therefore we have to use the clone() calls ability
> > -   to have the kernel write the PID into the user-level variable.  */
> > -#ifndef FORK
> > -# define FORK() \
> > -  INLINE_SYSCALL (clone, 3, CLONE_PARENT_SETTID | SIGCHLD, 0, &pid)
> > -#endif
> 
> What about the other uses?

Please clarify. Did I miss something?

Rich