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, 5 insertions, 2 deletions

diff --git a/sys/kern/kern_mib.c b/sys/kern/kern_mib.c
index 05f9031..43fcfa4 100644
--- a/sys/kern/kern_mib.c
+++ b/sys/kern/kern_mib.c
@@ -208,8 +208,9 @@ static char	machine_arch[] = MACHINE_ARCH;
 SYSCTL_STRING(_hw, HW_MACHINE_ARCH, machine_arch, CTLFLAG_RD,
     machine_arch, 0, "System architecture");
 
-/* should become #ifndef VIMAGE */
+#ifdef VIMAGE_GLOBALS
 char hostname[MAXHOSTNAMELEN];
+#endif
 
 /*
  * This mutex is used to protect the hostname and domainname variables, and
@@ -348,12 +349,14 @@ SYSCTL_PROC(_kern, OID_AUTO, conftxt, CTLTYPE_STRING|CTLFLAG_RW,
     0, 0, sysctl_kern_config, "", "Kernel configuration file");
 #endif
 
-/* should become #ifndef VIMAGE */
+#ifdef VIMAGE_GLOBALS
 char domainname[MAXHOSTNAMELEN];	/* Protected by hostname_mtx. */
+#endif
 
 static int
 sysctl_domainname(SYSCTL_HANDLER_ARGS)
 {
+	INIT_VPROCG(TD_TO_VPROCG(req->td));
 	char tmpdomainname[MAXHOSTNAMELEN];
 	int error;