PERFORCE change 19018 for review

[Brian Feldman]

http://perforce.freebsd.org/p4db/chv.cgi?CH=19018

Change 19018 by green at green_laptop_2 on 2002/10/10 06:10:03

	Reinitialize root filesystem vnodes that exist before SEBSD is
	initialized.

Affected files ...

.. //depot/projects/trustedbsd/mac/sys/security/sebsd/sebsd.c#36 edit

Differences ...

==== //depot/projects/trustedbsd/mac/sys/security/sebsd/sebsd.c#36 (text+ko) ====

@@ -1089,12 +1089,31 @@
  */
 static void
 sebsd_create_root_mount(struct ucred *cred, struct mount *mp,
-			struct mount *mntlabel, struct mount *fslabel)
+			struct label *mntlabel, struct label *fslabel)
 {
+	struct vnode *vp, *nvp;
+
 	avc_init();
 	if (security_init()) {
 		panic("SEBSD: couldn't read policy file");
 	}
+	/*
+	 * Go through all open vnodes and reload their labels.
+	 */
+	mtx_lock(&mntvnode_mtx);
+	vp = TAILQ_FIRST(&mp->mnt_nvnodelist);
+	do {
+		nvp = TAILQ_NEXT(vp, v_nmntvnodes);
+		VI_LOCK(vp);
+		mtx_unlock(&mntvnode_mtx);
+		vn_lock(vp, LK_INTERLOCK | LK_EXCLUSIVE | LK_RETRY, curthread);
+		(void)sebsd_update_vnode_from_extattr(vp, &vp->v_label, mp,
+		    fslabel);
+		VOP_UNLOCK(vp, 0, curthread);
+		mtx_lock(&mntvnode_mtx);
+		vp = nvp;
+	} while (vp != NULL);
+	mtx_unlock(&mntvnode_mtx);
 }
 
 static struct mac_policy_op_entry sebsd_ops[] = {
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