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-rw-r--r--include/mach/port.h18
1 files changed, 17 insertions, 1 deletions
diff --git a/include/mach/port.h b/include/mach/port.h
index 7ab3ab7c..3c226f6c 100644
--- a/include/mach/port.h
+++ b/include/mach/port.h
@@ -38,8 +38,24 @@
#include <mach/boolean.h>
#include <mach/machine/vm_types.h>
+/*
+ * Port names are the type used by userspace, they are always 32-bit wide.
+ */
+typedef unsigned int mach_port_name_t;
+typedef mach_port_name_t *mach_port_name_array_t;
+/*
+ * A port is represented
+ * - by a port name in userspace
+ * - by a pointer in kernel space
+ * While in userspace mach_port_name_t and mach_port_name are interchangable,
+ * in kernelspace they need to be different and appropriately converted.
+ */
+#ifdef KERNEL
typedef vm_offset_t mach_port_t;
+#else /* KERNEL */
+typedef mach_port_name_t mach_port_t;
+#endif
typedef mach_port_t *mach_port_array_t;
typedef const mach_port_t *const_mach_port_array_t;
typedef int *rpc_signature_info_t;
@@ -121,7 +137,7 @@ typedef unsigned int mach_port_msgcount_t; /* number of msgs */
typedef unsigned int mach_port_rights_t; /* number of rights */
typedef struct mach_port_status {
- mach_port_t mps_pset; /* containing port set */
+ mach_port_name_t mps_pset; /* containing port set */
mach_port_seqno_t mps_seqno; /* sequence number */
/*mach_port_mscount_t*/natural_t mps_mscount; /* make-send count */
/*mach_port_msgcount_t*/natural_t mps_qlimit; /* queue limit */