xnu-1504.15.3.tar.gz

[apple/xnu.git] / osfmk / mach / port.h

diff --git a/osfmk/mach/port.h b/osfmk/mach/port.h
index 5fdb3cb865fa70eb4f7bafb4dd4687e3d2639114..9db876f17ad2827ae6324b76fc2aea45a0cca43e 100644 (file)
--- a/osfmk/mach/port.h
+++ b/osfmk/mach/port.h
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2000-2005 Apple Computer, Inc. All rights reserved.
+ * Copyright (c) 2000-2006 Apple Computer, Inc. All rights reserved.
  *
  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  * 
@@ -53,6 +53,12 @@
  * any improvements or extensions that they make and grant Carnegie Mellon
  * the rights to redistribute these changes.
  */
+/*
+ * NOTICE: This file was modified by McAfee Research in 2004 to introduce
+ * support for mandatory and extensible security protections.  This notice
+ * is included in support of clause 2.2 (b) of the Apple Public License,
+ * Version 2.0.
+ */
 /*
  */
 /*
@@ -80,6 +86,7 @@
 #ifndef        _MACH_PORT_H_
 #define _MACH_PORT_H_
 
+#include <sys/cdefs.h>
 #include <stdint.h>
 #include <mach/boolean.h>
 #include <mach/machine/vm_types.h>
@@ -99,7 +106,7 @@
 typedef natural_t mach_port_name_t;
 typedef mach_port_name_t *mach_port_name_array_t;
 
-#ifdef KERNEL_PRIVATE
+#ifdef KERNEL
 
 /* 
  *     mach_port_t - a named port right
@@ -133,14 +140,22 @@ struct ipc_port ;
 
 typedef struct ipc_port                *ipc_port_t;
 
-#define IPC_PORT_NULL          ((ipc_port_t) 0)
-#define IPC_PORT_DEAD          ((ipc_port_t)~0)
+#define IPC_PORT_NULL          ((ipc_port_t) 0UL)
+#define IPC_PORT_DEAD          ((ipc_port_t)~0UL)
 #define IPC_PORT_VALID(port) \
        ((port) != IPC_PORT_NULL && (port) != IPC_PORT_DEAD)
 
 typedef ipc_port_t             mach_port_t;
 
-#else  /* KERNEL_PRIVATE */
+/*
+ * Since the 32-bit and 64-bit representations of ~0 are different,
+ * explicitly handle MACH_PORT_DEAD
+ */
+
+#define CAST_MACH_PORT_TO_NAME(x) ((mach_port_name_t)(uintptr_t)(x))
+#define CAST_MACH_NAME_TO_PORT(x) ((x) == MACH_PORT_DEAD ? (mach_port_t)IPC_PORT_DEAD : (mach_port_t)(uintptr_t)(x))
+
+#else  /* KERNEL */
 
 /* 
  *     mach_port_t - a named port right
@@ -163,7 +178,7 @@ typedef ipc_port_t          mach_port_t;
 typedef mach_port_name_t               mach_port_t;
 #endif
 
-#endif /* KERNEL_PRIVATE */
+#endif /* KERNEL */
 
 typedef mach_port_t                    *mach_port_array_t;
 
@@ -230,7 +245,8 @@ typedef natural_t mach_port_right_t;
 #define MACH_PORT_RIGHT_SEND_ONCE      ((mach_port_right_t) 2)
 #define MACH_PORT_RIGHT_PORT_SET       ((mach_port_right_t) 3)
 #define MACH_PORT_RIGHT_DEAD_NAME      ((mach_port_right_t) 4)
-#define MACH_PORT_RIGHT_NUMBER         ((mach_port_right_t) 5)
+#define MACH_PORT_RIGHT_LABELH         ((mach_port_right_t) 5)
+#define MACH_PORT_RIGHT_NUMBER         ((mach_port_right_t) 6)
 
 typedef natural_t mach_port_type_t;
 typedef mach_port_type_t *mach_port_type_array_t;
@@ -244,6 +260,7 @@ typedef mach_port_type_t *mach_port_type_array_t;
 #define MACH_PORT_TYPE_SEND_ONCE    MACH_PORT_TYPE(MACH_PORT_RIGHT_SEND_ONCE)
 #define MACH_PORT_TYPE_PORT_SET            MACH_PORT_TYPE(MACH_PORT_RIGHT_PORT_SET)
 #define MACH_PORT_TYPE_DEAD_NAME    MACH_PORT_TYPE(MACH_PORT_RIGHT_DEAD_NAME)
+#define MACH_PORT_TYPE_LABELH       MACH_PORT_TYPE(MACH_PORT_RIGHT_LABELH)
 
 /* Convenient combinations. */
 
@@ -282,7 +299,7 @@ typedef natural_t mach_port_rights_t;               /* number of rights */
 typedef unsigned int mach_port_srights_t;      /* status of send rights */
 
 typedef struct mach_port_status {
-       mach_port_name_t        mps_pset;       /* containing port set */
+       mach_port_rights_t      mps_pset;       /* count of containing port sets */
        mach_port_seqno_t       mps_seqno;      /* sequence number */
        mach_port_mscount_t     mps_mscount;    /* make-send count */
        mach_port_msgcount_t    mps_qlimit;     /* queue limit */
@@ -294,8 +311,15 @@ typedef struct mach_port_status {
        natural_t               mps_flags;              /* port flags */
 } mach_port_status_t;
 
-#define MACH_PORT_QLIMIT_DEFAULT       ((mach_port_msgcount_t) 5)
-#define MACH_PORT_QLIMIT_MAX   ((mach_port_msgcount_t) 16)
+/* System-wide values for setting queue limits on a port */
+#define MACH_PORT_QLIMIT_ZERO          ((mach_port_msgcount_t) 0)
+#define MACH_PORT_QLIMIT_BASIC         ((mach_port_msgcount_t) 5)
+#define MACH_PORT_QLIMIT_SMALL         ((mach_port_msgcount_t) 16)
+#define MACH_PORT_QLIMIT_LARGE         ((mach_port_msgcount_t) 1024)
+#define MACH_PORT_QLIMIT_KERNEL                ((mach_port_msgcount_t) 65536)
+#define MACH_PORT_QLIMIT_MIN           MACH_PORT_QLIMIT_ZERO
+#define MACH_PORT_QLIMIT_DEFAULT       MACH_PORT_QLIMIT_BASIC
+#define MACH_PORT_QLIMIT_MAX           MACH_PORT_QLIMIT_LARGE
 
 typedef struct mach_port_limits {
        mach_port_msgcount_t    mpl_qlimit;     /* number of msgs */
@@ -320,13 +344,13 @@ typedef int       mach_port_flavor_t;
  * Must be padded to 64-bits total length.
  */
 typedef struct mach_port_qos {
-       boolean_t               name:1;         /* name given */
-       boolean_t               prealloc:1;     /* prealloced message */
+       unsigned int            name:1;         /* name given */
+       unsigned int            prealloc:1;     /* prealloced message */
        boolean_t               pad1:30;
        natural_t               len;
 } mach_port_qos_t;
 
-#if    !defined(_POSIX_C_SOURCE) && !defined(_NO_PORT_T_FROM_MACH)
+#if    !__DARWIN_UNIX03 && !defined(_NO_PORT_T_FROM_MACH)
 /*
  *  Mach 3.0 renamed everything to have mach_ in front of it.
  *  These types and macros are provided for backward compatibility
@@ -341,6 +365,6 @@ typedef mach_port_name_t    *port_name_array_t;
 #define PORT_VALID(name) \
                ((port_t)(name) != PORT_NULL && (port_t)(name) != PORT_DEAD)
 
-#endif /* !_POSIX_C_SOURCE && !_NO_PORT_T_FROM_MACH */
+#endif /* !__DARWIN_UNIX03 && !_NO_PORT_T_FROM_MACH */
 
 #endif /* _MACH_PORT_H_ */