Introduce a new virtualization container, provisionally named vprocg, to hold

virtualized instances of hostname and domainname, as well as a new top-level
virtualization struct vimage, which holds pointers to struct vnet and struct
vprocg.  Struct vprocg is likely to become replaced in the near future with
a new jail management API import.

As a consequence of this change, change struct ucred to point to a struct
vimage, instead of directly pointing to a vnet.

Merge vnet / vimage / ucred refcounting infrastructure from p4 / vimage
branch.

Permit kldload / kldunload operations to be executed only from the default
vimage context.

This change should have no functional impact on nooptions VIMAGE kernel
builds.

Reviewed by:	bz
Approved by:	julian (mentor)

1 files changed, 4 insertions, 1 deletions

diff --git a/sys/kern/init_main.c b/sys/kern/init_main.c
index 96ebf36..97b7f0f 100644
--- a/sys/kern/init_main.c
+++ b/sys/kern/init_main.c
@@ -454,7 +454,10 @@ proc0_init(void *dummy __unused)
 	p->p_ucred->cr_ruidinfo = uifind(0);
 	p->p_ucred->cr_prison = NULL;	/* Don't jail it. */
 #ifdef VIMAGE
-	p->p_ucred->cr_vnet = LIST_FIRST(&vnet_head);
+	KASSERT(LIST_FIRST(&vimage_head) != NULL, ("vimage_head empty"));
+	P_TO_VIMAGE(p) =  LIST_FIRST(&vimage_head); /* set ucred->cr_vimage */
+	refcount_acquire(&P_TO_VIMAGE(p)->vi_ucredrefc);
+	LIST_FIRST(&vprocg_head)->nprocs++;
 #endif
 #ifdef AUDIT
 	audit_cred_kproc0(p->p_ucred);