Add VSA_ACE_* and MAX_ACL_ENTRIES defines

The following flags are use to get the proper mask when getting
and setting ACLs.  I'm hopeful this can all largely go away at
some point.

We also add a define for the maximum number of ACL entries.
MAX_ACL_ENTRIES is used as the maximum number of entries for
each type.

include/sys/acl.h

@@ -43,6 +43,8 @@ typedef struct ace_object {
         uint8_t         a_inherit_obj_type[16];  /* inherit obj */
 } ace_object_t;
 
+#define MAX_ACL_ENTRIES					1024
+
 #define ACE_READ_DATA                                   0x00000001
 #define ACE_LIST_DIRECTORY                              0x00000001
 #define ACE_WRITE_DATA                                  0x00000002
@@ -107,4 +109,9 @@ typedef struct ace_object {
      ACE_WRITE_ATTRIBUTES|ACE_DELETE|ACE_READ_ACL|ACE_WRITE_ACL| \
      ACE_WRITE_OWNER|ACE_SYNCHRONIZE)
 
+#define VSA_ACE                                         0x0010
+#define VSA_ACECNT                                      0x0020
+#define VSA_ACE_ALLTYPES                                0x0040
+#define VSA_ACE_ACLFLAGS                                0x0080
+
 #endif /* _SPL_ACL_H */