1 files changed, 31 insertions, 0 deletions

diff --git a/sys/kern/sysv_ipc.c b/sys/kern/sysv_ipc.c
index 0cbb4bbe8c42..d33fdb099203 100644
--- a/sys/kern/sysv_ipc.c
+++ b/sys/kern/sysv_ipc.c
@@ -36,6 +36,7 @@
 #include <sys/cdefs.h>
 __FBSDID("$FreeBSD$");
 
+#include "opt_compat.h"
 #include "opt_sysvipc.h"
 
 #include <sys/param.h>
@@ -147,3 +148,33 @@ ipcperm(struct thread *td, struct ipc_perm *perm, int acc_mode)
 	else
 		return (EACCES);
 }
+
+#if defined(COMPAT_FREEBSD4) || defined(COMPAT_FREEBSD5) || \
+    defined(COMPAT_FREEBSD6) || defined(COMPAT_FREEBSD7)
+void
+ipcperm_old2new(struct ipc_perm_old *old, struct ipc_perm *new)
+{
+
+	new->cuid = old->cuid;
+	new->cgid = old->cgid;
+	new->uid = old->uid;
+	new->gid = old->gid;
+	new->mode = old->mode;
+	new->seq = old->seq;
+	new->key = old->key;
+}
+
+void
+ipcperm_new2old(struct ipc_perm *new, struct ipc_perm_old *old)
+{
+
+	/* XXX: How to handle ID's > USHORT_MAX? */
+	old->cuid = new->cuid;
+	old->cgid = new->cgid;
+	old->uid = new->uid;
+	old->gid = new->gid;
+	old->mode = new->mode;
+	old->seq = new->seq;
+	old->key = new->key;
+}
+#endif