1 files changed, 20 insertions, 0 deletions

diff --git a/security/selinux/ss/policydb.h b/security/selinux/ss/policydb.h
index 310e94442cb8..95d3d7de361e 100644
--- a/security/selinux/ss/policydb.h
+++ b/security/selinux/ss/policydb.h
@@ -254,6 +254,9 @@ struct policydb {
 
         struct ebitmap permissive_map;
 
+        /* length of this policy when it was loaded */
+        size_t len;
+
         unsigned int policyvers;
 
         unsigned int reject_unknown : 1;
@@ -270,6 +273,7 @@ extern int policydb_class_isvalid(struct policydb *p, unsigned int class);
 extern int policydb_type_isvalid(struct policydb *p, unsigned int type);
 extern int policydb_role_isvalid(struct policydb *p, unsigned int role);
 extern int policydb_read(struct policydb *p, void *fp);
+extern int policydb_write(struct policydb *p, void *fp);
 
 #define PERM_SYMTAB_SIZE 32
 
@@ -290,6 +294,11 @@ struct policy_file {
         size_t len;
 };
 
+struct policy_data {
+        struct policydb *p;
+        void *fp;
+};
+
 static inline int next_entry(void *buf, struct policy_file *fp, size_t bytes)
 {
         if (bytes > fp->len)
@@ -301,6 +310,17 @@ static inline int next_entry(void *buf, struct policy_file *fp, size_t bytes)
         return 0;
 }
 
+static inline int put_entry(void *buf, size_t bytes, int num, struct policy_file *fp)
+{
+        size_t len = bytes * num;
+
+        memcpy(fp->data, buf, len);
+        fp->data += len;
+        fp->len -= len;
+
+        return 0;
+}
+
 extern u16 string_to_security_class(struct policydb *p, const char *name);
 extern u32 string_to_av_perm(struct policydb *p, u16 tclass, const char *name);