selinux: Build policy on systems not supporting DCCP protocol

Commit 3895fbbe0c ("selinux: Add support
for portcon dccp protocol") added support for the (portcon dccp ..)
statement. This fix will allow policy to be built on platforms
(see [1]) that do not have DCCP support by defining the IANA
assigned IP Protocol Number 33 to IPPROTO_DCCP.

[1] https://android-review.googlesource.com/#/c/219568/

Signed-off-by: Richard Haines <richard_c_haines@btinternet.com>

checkpolicy/checkpolicy.c

@@ -64,6 +64,9 @@
 #include <sys/stat.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
+#ifndef IPPROTO_DCCP
+#define IPPROTO_DCCP 33
+#endif
 #include <arpa/inet.h>
 #include <fcntl.h>
 #include <stdio.h>

checkpolicy/policy_define.c

@@ -36,6 +36,9 @@
 #include <string.h>
 #include <sys/socket.h>
 #include <netinet/in.h>
+#ifndef IPPROTO_DCCP
+#define IPPROTO_DCCP 33
+#endif
 #include <arpa/inet.h>
 #include <stdlib.h>
 #include <limits.h>

libsepol/cil/src/cil_binary.c

@@ -31,6 +31,9 @@
 #include <stdio.h>
 #include <assert.h>
 #include <netinet/in.h>
+#ifndef IPPROTO_DCCP
+#define IPPROTO_DCCP 33
+#endif
 
 #include <sepol/policydb/policydb.h>
 #include <sepol/policydb/polcaps.h>

libsepol/src/module_to_cil.c

@@ -26,6 +26,9 @@
 #include <getopt.h>
 #include <libgen.h>
 #include <netinet/in.h>
+#ifndef IPPROTO_DCCP
+#define IPPROTO_DCCP 33
+#endif
 #include <signal.h>
 #include <stdarg.h>
 #include <stdio.h>

libsepol/src/ports.c

@@ -1,4 +1,7 @@
 #include <netinet/in.h>
+#ifndef IPPROTO_DCCP
+#define IPPROTO_DCCP 33
+#endif
 #include <stdlib.h>
 
 #include "debug.h"