infect: Move sigmask getter (from ctl) into infec.c

... and hide compel priv from parasite-syscall.
Now it's completely isolated inside compel.
Signed-off-by: Pavel Emelyanov <xemul@virtuozzo.com>
Signed-off-by: Andrei Vagin <avagin@virtuozzo.com>

criu/include/infect.h

@@ -79,4 +79,6 @@ extern int compel_unmap(struct parasite_ctl *ctl, unsigned long addr);
 
 extern int compel_mode_native(struct parasite_ctl *ctl);
 
+extern k_rtsigset_t *compel_task_sigmask(struct parasite_ctl *ctl);
+
 #endif

criu/infect.c

@@ -1211,3 +1211,8 @@ int compel_mode_native(struct parasite_ctl *ctl)
 {
 	return user_regs_native(&ctl->orig.regs);
 }
+
+k_rtsigset_t *compel_task_sigmask(struct parasite_ctl *ctl)
+{
+	return &ctl->orig.sigmask;
+}

criu/parasite-syscall.c

@@ -43,7 +43,6 @@
 
 #include "infect.h"
 #include "infect-rpc.h"
-#include "infect-priv.h"
 
 unsigned long get_exec_start(struct vm_area_list *vmas)
 {
@@ -597,7 +596,7 @@ struct parasite_ctl *parasite_infect_seized(pid_t pid, struct pstree_item *item,
 	}
 
 	parasite_args_size = PARASITE_ARG_SIZE_MIN; /* reset for next task */
-	memcpy(&item->core[0]->tc->blk_sigset, &ctl->orig.sigmask, sizeof(k_rtsigset_t));
+	memcpy(&item->core[0]->tc->blk_sigset, compel_task_sigmask(ctl), sizeof(k_rtsigset_t));
 	dmpi(item)->parasite_ctl = ctl;
 
 	return ctl;