[CRIU] Re: [PATCH 06/12] parasite: Add interface for file descriptors draining

[Cyrill Gorcunov]

On Tue, Mar 27, 2012 at 05:12:02PM +0400, Cyrill Gorcunov wrote:
> > > +
> > > +	/* Verify the descriptors do match */
> > > +	for (i = 0; i < nr_fds; i++) {
> > > +		pid_t me = getpid();
> > > +		if (sys_kcmp(me, ctl->pid, KCMP_FILE, fds[i], lfds[i])) {
> > 
> > I.e. me's fds[i] should be equal to other's lfds[i], meanwhile the fds array
> > contains other's descriptors and the lfds one -- locally received ones.
> > 
> > How does it work?
> 
> They are equal, the fds[] is the fd numbers in dumpee, the ldf is the ones
> received (and in same order), so they should point to the same struct file,
> thus kcmp can check this condition (fds and ldfs are not same place in memory).
> 

Btw, this snippet is removed by last patch in series, I simply don't wanted to
remake all series and patched it on top.

	Cyrill