xnu-1699.22.81.tar.gz

[apple/xnu.git] / bsd / sys / ipc.h

diff --git a/bsd/sys/ipc.h b/bsd/sys/ipc.h
index 14bed3fb7f01847f2312b0218a2a27e248bf4808..a43cacc55a76d89a90d81a3e63052f1b89a845e1 100644 (file)
--- a/bsd/sys/ipc.h
+++ b/bsd/sys/ipc.h
@@ -105,6 +105,8 @@ typedef     __darwin_mode_t mode_t;
 typedef        __int32_t       key_t;
 #endif
 
+#pragma pack(4)
+
 /*
  * Technically, we should force all code references to the new structure
  * definition, not in just the standards conformance case, and leave the
@@ -148,6 +150,8 @@ struct __ipc_perm_old {
 };
 #endif /* !__DARWIN_UNIX03 */
 
+#pragma pack()
+
 /*
  * [XSI] Definitions shall be provided for the following constants:
  */
@@ -185,7 +189,7 @@ struct __ipc_perm_old {
 /* Macros to convert between ipc ids and array indices or sequence ids */
 #define        IPCID_TO_IX(id)         ((id) & 0xffff)
 #define        IPCID_TO_SEQ(id)        (((id) >> 16) & 0xffff)
-#define        IXSEQ_TO_IPCID(ix,perm) (((perm._seq) << 16L) | (ix & 0xffff))
+#define        IXSEQ_TO_IPCID(ix,perm) (((perm._seq) << 16L) | ((ix) & 0xffff))
 
 struct ucred;