selinux: Create policydb version for Infiniband support

Support for Infiniband requires the addition of two new object contexts,
one for infiniband PKeys and another IB Ports. Added handlers to read
and write the new ocontext types when reading or writing a binary policy
representation.

Signed-off-by: Daniel Jurgens <danielj@mellanox.com>
Reviewed-by: Eli Cohen <eli@mellanox.com>
Reviewed-by: James Morris <james.l.morris@oracle.com>
Acked-by: Doug Ledford <dledford@redhat.com>
Signed-off-by: Paul Moore <paul@paul-moore.com>

1 files changed, 97 insertions, 15 deletions

diff --git a/security/selinux/ss/policydb.c b/security/selinux/ss/policydb.c
index 87d645d3a39f..aa6500abb178 100644
--- a/security/selinux/ss/policydb.c
+++ b/security/selinux/ss/policydb.c
@@ -17,6 +17,11 @@
  *
  *      Added support for the policy capability bitmap
  *
+ * Update: Mellanox Techonologies
+ *
+ *	Added Infiniband support
+ *
+ * Copyright (C) 2016 Mellanox Techonologies
  * Copyright (C) 2007 Hewlett-Packard Development Company, L.P.
  * Copyright (C) 2004-2005 Trusted Computer Solutions, Inc.
  * Copyright (C) 2003 - 2004 Tresys Technology, LLC
@@ -76,81 +81,86 @@ static struct policydb_compat_info policydb_compat[] = {
 	{
 		.version	= POLICYDB_VERSION_BASE,
 		.sym_num	= SYM_NUM - 3,
-		.ocon_num	= OCON_NUM - 1,
+		.ocon_num	= OCON_NUM - 3,
 	},
 	{
 		.version	= POLICYDB_VERSION_BOOL,
 		.sym_num	= SYM_NUM - 2,
-		.ocon_num	= OCON_NUM - 1,
+		.ocon_num	= OCON_NUM - 3,
 	},
 	{
 		.version	= POLICYDB_VERSION_IPV6,
 		.sym_num	= SYM_NUM - 2,
-		.ocon_num	= OCON_NUM,
+		.ocon_num	= OCON_NUM - 2,
 	},
 	{
 		.version	= POLICYDB_VERSION_NLCLASS,
 		.sym_num	= SYM_NUM - 2,
-		.ocon_num	= OCON_NUM,
+		.ocon_num	= OCON_NUM - 2,
 	},
 	{
 		.version	= POLICYDB_VERSION_MLS,
 		.sym_num	= SYM_NUM,
-		.ocon_num	= OCON_NUM,
+		.ocon_num	= OCON_NUM - 2,
 	},
 	{
 		.version	= POLICYDB_VERSION_AVTAB,
 		.sym_num	= SYM_NUM,
-		.ocon_num	= OCON_NUM,
+		.ocon_num	= OCON_NUM - 2,
 	},
 	{
 		.version	= POLICYDB_VERSION_RANGETRANS,
 		.sym_num	= SYM_NUM,
-		.ocon_num	= OCON_NUM,
+		.ocon_num	= OCON_NUM - 2,
 	},
 	{
 		.version	= POLICYDB_VERSION_POLCAP,
 		.sym_num	= SYM_NUM,
-		.ocon_num	= OCON_NUM,
+		.ocon_num	= OCON_NUM - 2,
 	},
 	{
 		.version	= POLICYDB_VERSION_PERMISSIVE,
 		.sym_num	= SYM_NUM,
-		.ocon_num	= OCON_NUM,
+		.ocon_num	= OCON_NUM - 2,
 	},
 	{
 		.version	= POLICYDB_VERSION_BOUNDARY,
 		.sym_num	= SYM_NUM,
-		.ocon_num	= OCON_NUM,
+		.ocon_num	= OCON_NUM - 2,
 	},
 	{
 		.version	= POLICYDB_VERSION_FILENAME_TRANS,
 		.sym_num	= SYM_NUM,
-		.ocon_num	= OCON_NUM,
+		.ocon_num	= OCON_NUM - 2,
 	},
 	{
 		.version	= POLICYDB_VERSION_ROLETRANS,
 		.sym_num	= SYM_NUM,
-		.ocon_num	= OCON_NUM,
+		.ocon_num	= OCON_NUM - 2,
 	},
 	{
 		.version	= POLICYDB_VERSION_NEW_OBJECT_DEFAULTS,
 		.sym_num	= SYM_NUM,
-		.ocon_num	= OCON_NUM,
+		.ocon_num	= OCON_NUM - 2,
 	},
 	{
 		.version	= POLICYDB_VERSION_DEFAULT_TYPE,
 		.sym_num	= SYM_NUM,
-		.ocon_num	= OCON_NUM,
+		.ocon_num	= OCON_NUM - 2,
 	},
 	{
 		.version	= POLICYDB_VERSION_CONSTRAINT_NAMES,
 		.sym_num	= SYM_NUM,
-		.ocon_num	= OCON_NUM,
+		.ocon_num	= OCON_NUM - 2,
 	},
 	{
 		.version	= POLICYDB_VERSION_XPERMS_IOCTL,
 		.sym_num	= SYM_NUM,
+		.ocon_num	= OCON_NUM - 2,
+	},
+	{
+		.version	= POLICYDB_VERSION_INFINIBAND,
+		.sym_num	= SYM_NUM,
 		.ocon_num	= OCON_NUM,
 	},
 };
@@ -2206,6 +2216,51 @@ static int ocontext_read(struct policydb *p, struct policydb_compat_info *info,
 					goto out;
 				break;
 			}
+			case OCON_IBPKEY:
+				rc = next_entry(nodebuf, fp, sizeof(u32) * 4);
+				if (rc)
+					goto out;
+
+				c->u.ibpkey.subnet_prefix = be64_to_cpu(*((__be64 *)nodebuf));
+
+				if (nodebuf[2] > 0xffff ||
+				    nodebuf[3] > 0xffff) {
+					rc = -EINVAL;
+					goto out;
+				}
+
+				c->u.ibpkey.low_pkey = le32_to_cpu(nodebuf[2]);
+				c->u.ibpkey.high_pkey = le32_to_cpu(nodebuf[3]);
+
+				rc = context_read_and_validate(&c->context[0],
+							       p,
+							       fp);
+				if (rc)
+					goto out;
+				break;
+			case OCON_IBENDPORT:
+				rc = next_entry(buf, fp, sizeof(u32) * 2);
+				if (rc)
+					goto out;
+				len = le32_to_cpu(buf[0]);
+
+				rc = str_read(&c->u.ibendport.dev_name, GFP_KERNEL, fp, len);
+				if (rc)
+					goto out;
+
+				if (buf[1] > 0xff || buf[1] == 0) {
+					rc = -EINVAL;
+					goto out;
+				}
+
+				c->u.ibendport.port = le32_to_cpu(buf[1]);
+
+				rc = context_read_and_validate(&c->context[0],
+							       p,
+							       fp);
+				if (rc)
+					goto out;
+				break;
 			}
 		}
 	}
@@ -3135,6 +3190,33 @@ static int ocontext_write(struct policydb *p, struct policydb_compat_info *info,
 				if (rc)
 					return rc;
 				break;
+			case OCON_IBPKEY:
+				*((__be64 *)nodebuf) = cpu_to_be64(c->u.ibpkey.subnet_prefix);
+
+				nodebuf[2] = cpu_to_le32(c->u.ibpkey.low_pkey);
+				nodebuf[3] = cpu_to_le32(c->u.ibpkey.high_pkey);
+
+				rc = put_entry(nodebuf, sizeof(u32), 4, fp);
+				if (rc)
+					return rc;
+				rc = context_write(p, &c->context[0], fp);
+				if (rc)
+					return rc;
+				break;
+			case OCON_IBENDPORT:
+				len = strlen(c->u.ibendport.dev_name);
+				buf[0] = cpu_to_le32(len);
+				buf[1] = cpu_to_le32(c->u.ibendport.port);
+				rc = put_entry(buf, sizeof(u32), 2, fp);
+				if (rc)
+					return rc;
+				rc = put_entry(c->u.ibendport.dev_name, 1, len, fp);
+				if (rc)
+					return rc;
+				rc = context_write(p, &c->context[0], fp);
+				if (rc)
+					return rc;
+				break;
 			}
 		}
 	}