xnu-1228.tar.gz

[apple/xnu.git] / libsyscall / mach / headers / port_obj.h

diff --git a/libsyscall/mach/headers/port_obj.h b/libsyscall/mach/headers/port_obj.h
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+/*
+ * Copyright (c) 2003 Apple Computer, Inc. All rights reserved.
+ *
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
+ * 
+ * This file contains Original Code and/or Modifications of Original Code
+ * as defined in and that are subject to the Apple Public Source License
+ * Version 2.0 (the 'License'). You may not use this file except in
+ * compliance with the License. The rights granted to you under the License
+ * may not be used to create, or enable the creation or redistribution of,
+ * unlawful or unlicensed copies of an Apple operating system, or to
+ * circumvent, violate, or enable the circumvention or violation of, any
+ * terms of an Apple operating system software license agreement.
+ * 
+ * Please obtain a copy of the License at
+ * http://www.opensource.apple.com/apsl/ and read it before using this file.
+ * 
+ * The Original Code and all software distributed under the License are
+ * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
+ * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
+ * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
+ * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
+ * Please see the License for the specific language governing rights and
+ * limitations under the License.
+ * 
+ * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
+ */
+/*
+ * @OSF_COPYRIGHT@
+ */
+
+/*
+ * Define a service to map from a kernel-generated port name
+ * to server-defined "type" and "value" data to be associated
+ * with the port.
+ */
+
+#ifndef PORT_OBJ_H
+#define PORT_OBJ_H
+
+#include <mach/port.h>
+
+struct port_obj_tentry {
+       void *pos_value;
+       int pos_type;
+};
+
+#include <sys/cdefs.h>
+
+__BEGIN_DECLS
+extern void port_obj_init(int);
+__END_DECLS
+
+extern struct port_obj_tentry *port_obj_table;
+extern int port_obj_table_size;
+
+#ifndef PORT_OBJ_ASSERT
+
+#define port_set_obj_value_type(pname, value, type)    \
+do {                                                   \
+       int ndx;                                        \
+                                                       \
+       if (!port_obj_table)                            \
+               port_obj_init(port_obj_table_size);     \
+       ndx = MACH_PORT_INDEX(pname);                   \
+       port_obj_table[ndx].pos_value = (value);        \
+       port_obj_table[ndx].pos_type = (type);          \
+} while (0)
+
+#define port_get_obj_value(pname)                      \
+       (port_obj_table[MACH_PORT_INDEX(pname)].pos_value)
+
+#define port_get_obj_type(pname)                       \
+       (port_obj_table[MACH_PORT_INDEX(pname)].pos_type)
+
+#else  /* PORT_OBJ_ASSERT */
+
+#define port_set_obj_value_type(pname, value, type)    \
+do {                                                   \
+       int ndx;                                        \
+                                                       \
+       if (!port_obj_table)                            \
+               port_obj_init(port_obj_table_size);     \
+       ndx = MACH_PORT_INDEX(pname);                   \
+       assert(ndx > 0);                                \
+       assert(ndx < port_obj_table_size);              \
+       port_obj_table[ndx].pos_value = (value);        \
+       port_obj_table[ndx].pos_type = (type);          \
+} while (0)
+
+#define port_get_obj_value(pname)                              \
+       ((MACH_PORT_INDEX(pname) < (unsigned)port_obj_table_size) ?     \
+       port_obj_table[MACH_PORT_INDEX(pname)].pos_value :      \
+       (panic("port_get_obj_value: index too big"), (void *)-1))
+
+#define port_get_obj_type(pname)                               \
+       ((MACH_PORT_INDEX(pname) < (unsigned)port_obj_table_size) ?     \
+       port_obj_table[MACH_PORT_INDEX(pname)].pos_type :       \
+       (panic("port_get_obj_type: index too big"), -1))
+
+#endif /* PORT_OBJ_ASSERT */
+
+#endif /* PORT_OBJ_H */