Commit step 1 of the vimage project, (network stack)

virtualization work done by Marko Zec (zec@).

This is the first in a series of commits over the course
of the next few weeks.

Mark all uses of global variables to be virtualized
with a V_ prefix.
Use macros to map them back to their global names for
now, so this is a NOP change only.

We hope to have caught at least 85-90% of what is needed
so we do not invalidate a lot of outstanding patches again.

Obtained from:	//depot/projects/vimage-commit2/...
Reviewed by:	brooks, des, ed, mav, julian,
		jamie, kris, rwatson, zec, ...
		(various people I forgot, different versions)
		md5 (with a bit of help)
Sponsored by:	NLnet Foundation, The FreeBSD Foundation
X-MFC after:	never
V_Commit_Message_Reviewed_By:	more people than the patch

1 files changed, 4 insertions, 3 deletions

diff --git a/sys/nfsclient/nfs_vfsops.c b/sys/nfsclient/nfs_vfsops.c
index d068ab3..e7e3f12 100644
--- a/sys/nfsclient/nfs_vfsops.c
+++ b/sys/nfsclient/nfs_vfsops.c
@@ -56,6 +56,7 @@ __FBSDID("$FreeBSD$");
 #include <sys/sysctl.h>
 #include <sys/vnode.h>
 #include <sys/signalvar.h>
+#include <sys/vimage.h>
 
 #include <vm/vm.h>
 #include <vm/vm_extern.h>
@@ -509,10 +510,10 @@ nfs_mountroot(struct mount *mp, struct thread *td)
 	 * mount the right /var based upon its preset value.
 	 */
 	mtx_lock(&hostname_mtx);
-	bcopy(nd->my_hostnam, hostname, MAXHOSTNAMELEN);
-	hostname[MAXHOSTNAMELEN - 1] = '\0';
+	bcopy(nd->my_hostnam, V_hostname, MAXHOSTNAMELEN);
+	V_hostname[MAXHOSTNAMELEN - 1] = '\0';
 	for (i = 0; i < MAXHOSTNAMELEN; i++)
-		if (hostname[i] == '\0')
+		if (V_hostname[i] == '\0')
 			break;
 	mtx_unlock(&hostname_mtx);
 	inittodr(ntohl(nd->root_time));