3 files changed, 34 insertions, 21 deletions

diff --git a/security/selinux/ss/mls.c b/security/selinux/ss/mls.c
index 119bd6078ba..c713af23250 100644
--- a/security/selinux/ss/mls.c
+++ b/security/selinux/ss/mls.c
@@ -530,22 +530,21 @@ int mls_compute_sid(struct context *scontext,
 		    u32 specified,
 		    struct context *newcontext)
 {
+	struct range_trans *rtr;
+
 	if (!selinux_mls_enabled)
 		return 0;
 
 	switch (specified) {
 	case AVTAB_TRANSITION:
-		if (tclass == SECCLASS_PROCESS) {
-			struct range_trans *rangetr;
-			/* Look for a range transition rule. */
-			for (rangetr = policydb.range_tr; rangetr;
-			     rangetr = rangetr->next) {
-				if (rangetr->dom == scontext->type &&
-				    rangetr->type == tcontext->type) {
-					/* Set the range from the rule */
-					return mls_range_set(newcontext,
-					                     &rangetr->range);
-				}
+		/* Look for a range transition rule. */
+		for (rtr = policydb.range_tr; rtr; rtr = rtr->next) {
+			if (rtr->source_type == scontext->type &&
+			    rtr->target_type == tcontext->type &&
+			    rtr->target_class == tclass) {
+				/* Set the range from the rule */
+				return mls_range_set(newcontext,
+				                     &rtr->target_range);
 			}
 		}
 		/* Fallthrough */
diff --git a/security/selinux/ss/policydb.c b/security/selinux/ss/policydb.c
index f03960e697c..b1889530255 100644
--- a/security/selinux/ss/policydb.c
+++ b/security/selinux/ss/policydb.c
@@ -96,6 +96,11 @@ static struct policydb_compat_info policydb_compat[] = {
 		.sym_num        = SYM_NUM,
 		.ocon_num       = OCON_NUM,
 	},
+	{
+		.version        = POLICYDB_VERSION_RANGETRANS,
+		.sym_num        = SYM_NUM,
+		.ocon_num       = OCON_NUM,
+	},
 };
 
 static struct policydb_compat_info *policydb_lookup_compat(int version)
@@ -645,15 +650,15 @@ void policydb_destroy(struct policydb *p)
 
 	for (rt = p->range_tr; rt; rt = rt -> next) {
 		if (lrt) {
-			ebitmap_destroy(&lrt->range.level[0].cat);
-			ebitmap_destroy(&lrt->range.level[1].cat);
+			ebitmap_destroy(&lrt->target_range.level[0].cat);
+			ebitmap_destroy(&lrt->target_range.level[1].cat);
 			kfree(lrt);
 		}
 		lrt = rt;
 	}
 	if (lrt) {
-		ebitmap_destroy(&lrt->range.level[0].cat);
-		ebitmap_destroy(&lrt->range.level[1].cat);
+		ebitmap_destroy(&lrt->target_range.level[0].cat);
+		ebitmap_destroy(&lrt->target_range.level[1].cat);
 		kfree(lrt);
 	}
 
@@ -1829,6 +1834,7 @@ int policydb_read(struct policydb *p, void *fp)
 	}
 
 	if (p->policyvers >= POLICYDB_VERSION_MLS) {
+		int new_rangetr = p->policyvers >= POLICYDB_VERSION_RANGETRANS;
 		rc = next_entry(buf, fp, sizeof(u32));
 		if (rc < 0)
 			goto bad;
@@ -1847,9 +1853,16 @@ int policydb_read(struct policydb *p, void *fp)
 			rc = next_entry(buf, fp, (sizeof(u32) * 2));
 			if (rc < 0)
 				goto bad;
-			rt->dom = le32_to_cpu(buf[0]);
-			rt->type = le32_to_cpu(buf[1]);
-			rc = mls_read_range_helper(&rt->range, fp);
+			rt->source_type = le32_to_cpu(buf[0]);
+			rt->target_type = le32_to_cpu(buf[1]);
+			if (new_rangetr) {
+				rc = next_entry(buf, fp, sizeof(u32));
+				if (rc < 0)
+					goto bad;
+				rt->target_class = le32_to_cpu(buf[0]);
+			} else
+				rt->target_class = SECCLASS_PROCESS;
+			rc = mls_read_range_helper(&rt->target_range, fp);
 			if (rc)
 				goto bad;
 			lrt = rt;
diff --git a/security/selinux/ss/policydb.h b/security/selinux/ss/policydb.h
index b1340711f72..8319d5ff594 100644
--- a/security/selinux/ss/policydb.h
+++ b/security/selinux/ss/policydb.h
@@ -106,9 +106,10 @@ struct cat_datum {
 };
 
 struct range_trans {
-	u32 dom;			/* current process domain */
-	u32 type;			/* program executable type */
-	struct mls_range range;		/* new range */
+	u32 source_type;
+	u32 target_type;
+	u32 target_class;
+	struct mls_range target_range;
 	struct range_trans *next;
 };