[CRIU] [PATCH 12/14] restore: set up a handler for collecting signals from zombies

[Andrew Vagin]

On Fri, Jan 18, 2013 at 12:04:11PM +0400, Pavel Emelyanov wrote:
> > @@ -40,6 +41,20 @@
> >  static struct task_entries *task_entries;
> >  static futex_t thread_inprogress;
> >  
> > +asm (								\
> > +	"nop\n"							\
> > +	".align 16\n"						\
> > +	"__cr_restore_rt:\n"					\
> > +	"       movq $"__stringify(__NR_rt_sigreturn)", %rax\n"	\
> > +	"       syscall"					\
> > +);
> 
> What's this?

I copied this code from glibc. We need it, because glibc are not
avaliable in restorer.

> 
> > +extern void cr_restore_rt (void) asm ("__cr_restore_rt")
> > +			__attribute__ ((visibility ("hidden")));
> > +
> > +static void sigzombie_handler(int signal, siginfo_t *siginfo, void *data)
> > +{
> > +}
> > +
> >  static void sigchld_handler(int signal, siginfo_t *siginfo, void *data)
> >  {
> >  	char *r;