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- /*
- * Mach Operating System
- * Copyright (c) 1991,1990,1989,1988,1987 Carnegie Mellon University
- * All Rights Reserved.
- *
- * Permission to use, copy, modify and distribute this software and its
- * documentation is hereby granted, provided that both the copyright
- * notice and this permission notice appear in all copies of the
- * software, derivative works or modified versions, and any portions
- * thereof, and that both notices appear in supporting documentation.
- *
- * CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
- * CONDITION. CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
- * ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
- *
- * Carnegie Mellon requests users of this software to return to
- *
- * Software Distribution Coordinator or Software.Distribution@CS.CMU.EDU
- * School of Computer Science
- * Carnegie Mellon University
- * Pittsburgh PA 15213-3890
- *
- * any improvements or extensions that they make and grant Carnegie Mellon
- * the rights to redistribute these changes.
- */
- /*
- * HISTORY
- * $Log: memory_object.defs,v $
- * Revision 2.9 91/08/28 11:15:19 jsb
- * Added conditionalized sequence number support.
- * [91/08/13 rpd]
- * Fixed memory_object_supply_completed and memory_object_data_return
- * to use mach_port_t as the C type name for port arguments.
- * [91/08/02 rpd]
- * Update types in new memory object routines. Add
- * memory_object_change_completed.
- * [91/07/03 14:05:39 dlb]
- *
- * Revision 2.8 91/07/01 08:25:16 jsb
- * From David Black at OSF: added memory_object_supply_completed
- * and memory_object_data_return.
- * [91/06/29 14:54:47 jsb]
- *
- * Revision 2.7 91/06/25 10:30:30 rpd
- * Changed the port-based type declarations
- * to use mach_port_t as the C type name.
- * [91/05/23 rpd]
- *
- * Revision 2.6 91/06/17 15:47:26 jsb
- * If KERNEL and NORMA_VM, then use a userprefix (to allow interposition).
- * [91/06/17 10:55:06 jsb]
- *
- * Revision 2.5 91/05/14 16:55:36 mrt
- * Correcting copyright
- *
- * Revision 2.4 91/02/05 17:33:53 mrt
- * Changed to new Mach copyright
- * [91/02/01 17:19:02 mrt]
- *
- * Revision 2.3 90/08/06 17:06:11 rpd
- * For compatibility with Mach 2.5, added dealloc to
- * arguments of memory_object_terminate and memory_object_copy.
- * [90/08/04 rpd]
- *
- * Revision 2.2 90/06/02 14:58:51 rpd
- * Changed memory_object argument to memory_object_lock_completed
- * to default to a send-once right but still allow send rights.
- * [90/05/31 rpd]
- *
- * Converted to new IPC.
- * [90/03/26 22:35:02 rpd]
- *
- * Revision 2.1 89/08/03 17:18:02 rwd
- * Created.
- *
- * Revision 2.3 89/02/25 18:38:17 gm0w
- * Changes for cleanup.
- *
- * Revision 2.2 89/01/15 16:31:06 rpd
- * Moved from kern/ to mach/.
- * [89/01/15 14:40:04 rpd]
- *
- * Revision 2.6 89/01/12 07:58:12 rpd
- * Fixed includes.
- * [89/01/12 04:52:21 rpd]
- *
- * Revision 2.5 88/12/19 02:46:15 mwyoung
- * Change argument to memory_object_init to avoid lint in the MiG
- * output.
- * [88/12/18 mwyoung]
- *
- * Add memory_object_copy.
- * [88/11/07 mwyoung]
- *
- * Revision 2.4 88/08/25 18:16:54 mwyoung
- * Add memory_object_terminate.
- * [88/08/11 18:46:46 mwyoung]
- *
- * 29-Jun-88 Michael Young (mwyoung) at Carnegie-Mellon University
- * Use new types.
- *
- * 29-Jun-88 Michael Young (mwyoung) at Carnegie-Mellon University
- * Moved data type declarations to "mach_types.defs".
- *
- * 9-Dec-87 Michael Young (mwyoung) at Carnegie-Mellon University
- * Split that part of the interface applicable only to default
- * pagers into a separate interface definition.
- *
- * Documented the interface.
- *
- * Purged history. Contributors so far: jle, mwyoung, bolosky.
- *
- */
- /*
- * File: mach/memory_object.defs
- *
- * Abstract:
- * Basic Mach external memory management interface declaration.
- */
-
- subsystem
- #if KERNEL_USER
- KernelUser
- #endif KERNEL_USER
- #if KERNEL_SERVER
- KernelServer
- #endif KERNEL_SERVER
- memory_object 2200;
-
- #include <mach/std_types.defs>
- #include <mach/mach_types.defs>
-
- #if SEQNOS
- serverprefix seqnos_;
- serverdemux seqnos_memory_object_server;
- #endif SEQNOS
-
- /*
- * Initialize the specified memory object, providing
- * a reqeust port on which control calls can be made, and
- * a name port that identifies this object to callers of
- * vm_regions.
- * [To allow the mapping of this object to be used, the
- * memory manager must call memory_object_set_attributes,
- * specifying the "ready" parameter as TRUE. To reject
- * all mappings of this object, the memory manager may
- * use memory_object_destroy.]
- */
- simpleroutine memory_object_init(
- memory_object : memory_object_t;
- #if SEQNOS
- msgseqno seqno : mach_port_seqno_t;
- #endif SEQNOS
- memory_control : memory_object_control_t =
- MACH_MSG_TYPE_MAKE_SEND
- ctype: mach_port_t;
- memory_object_name : memory_object_name_t =
- MACH_MSG_TYPE_MAKE_SEND
- ctype: mach_port_t;
- memory_object_page_size : vm_size_t);
-
- /*
- * Indicates that the specified memory object is no longer
- * mapped (or cached -- see memory_object_set_attributes),
- * and that further mappings will cause another memory_object_init
- * call to be made. No further calls will be made on
- * the memory object by this kernel.
- *
- * [All rights to the control and name ports are included
- * in this call. The memory manager should use port_deallocate
- * to release them once they are no longer needed.]
- */
- simpleroutine memory_object_terminate(
- memory_object : memory_object_t =
- MACH_MSG_TYPE_MOVE_SEND
- ctype: mach_port_t;
- #if SEQNOS
- msgseqno seqno : mach_port_seqno_t;
- #endif SEQNOS
- memory_control : memory_object_control_t =
- MACH_MSG_TYPE_MOVE_RECEIVE
- ctype: mach_port_t
- #if KERNEL_USER
- /* for compatibility with Mach 2.5 kernels */
- , dealloc
- #endif KERNEL_USER
- ;
- memory_object_name : memory_object_name_t =
- MACH_MSG_TYPE_MOVE_RECEIVE
- ctype: mach_port_t
- #if KERNEL_USER
- /* for compatibility with Mach 2.5 kernels */
- , dealloc
- #endif KERNEL_USER
- );
-
- /*
- * Indicates that a copy has been made of the specified range of
- * the given original memory object. The kernel will use the new
- * memory object, control and name ports to refer to the new copy
- * (once the memory manager has asserted its "ready" attribute).
- *
- * Cached pages from the original memory object at the time of
- * the copy operation are handled as follows:
- * Readable pages may be silently copied to the new
- * memory object (with all access permissions).
- * Pages not copied are locked to prevent write access.
- *
- * This call includes only the new memory object itself; a
- * memory_object_init call will be made on the new memory
- * object after the actions above are completed.
- *
- * The new memory object is *temporary*, meaning that the
- * memory manager should not change its contents or allow
- * the memory object to be mapped in another client. The
- * memory manager may use the memory_object_data_unavailable
- * call to indicate that the appropriate page of the original
- * memory object may be used to fulfill a data request.
- *
- * [Reply should be memory_object_set_attributes on the
- * new memory object control port to indicate readiness.]
- */
- simpleroutine memory_object_copy(
- old_memory_object : memory_object_t;
- #if SEQNOS
- msgseqno seqno : mach_port_seqno_t;
- #endif SEQNOS
- old_memory_control : memory_object_control_t =
- MACH_MSG_TYPE_MAKE_SEND
- ctype: mach_port_t;
- offset : vm_offset_t;
- length : vm_size_t;
- new_memory_object : memory_object_t =
- MACH_MSG_TYPE_MOVE_RECEIVE
- ctype: mach_port_t
- #if KERNEL_USER
- /* for compatibility with Mach 2.5 kernels */
- , dealloc
- #endif KERNEL_USER
- );
-
- /*
- * Request data from this memory object. At least
- * the specified data should be returned with at
- * least the specified access permitted.
- *
- * [Reply should be memory_object_data_provided.]
- */
- simpleroutine memory_object_data_request(
- memory_object : memory_object_t;
- #if SEQNOS
- msgseqno seqno : mach_port_seqno_t;
- #endif SEQNOS
- memory_control : memory_object_control_t =
- MACH_MSG_TYPE_MAKE_SEND
- ctype: mach_port_t;
- offset : vm_offset_t;
- length : vm_size_t;
- desired_access : vm_prot_t);
-
- /*
- * Request that the specified portion of this
- * memory object be unlocked to allow the specified
- * forms of access; the kernel already has the data.
- *
- * [Reply should be memory_object_lock_request.]
- */
- simpleroutine memory_object_data_unlock(
- memory_object : memory_object_t;
- #if SEQNOS
- msgseqno seqno : mach_port_seqno_t;
- #endif SEQNOS
- memory_control : memory_object_control_t =
- MACH_MSG_TYPE_MAKE_SEND
- ctype: mach_port_t;
- offset : vm_offset_t;
- length : vm_size_t;
- desired_access : vm_prot_t);
-
- /*
- * Write back modifications made to this portion of
- * the memory object while in memory.
- *
- * Unless explicitly requested by a memory_object_lock_request
- * (clean, but not flush), the kernel will not retain
- * the data.
- *
- * [Reply should be vm_deallocate to release the data.]
- */
- simpleroutine memory_object_data_write(
- memory_object : memory_object_t;
- #if SEQNOS
- msgseqno seqno : mach_port_seqno_t;
- #endif SEQNOS
- memory_control : memory_object_control_t =
- MACH_MSG_TYPE_MAKE_SEND
- ctype: mach_port_t;
- offset : vm_offset_t;
- data : pointer_t);
-
- /*
- * Indicate that a previous memory_object_lock_reqeust has been
- * completed. Note that this call is made on whatever
- * port is specified in the memory_object_lock_request; that port
- * need not be the memory object port itself.
- *
- * [No reply expected.]
- */
- simpleroutine memory_object_lock_completed(
- memory_object : memory_object_t =
- polymorphic|MACH_MSG_TYPE_PORT_SEND_ONCE
- ctype: mach_port_t;
- #if SEQNOS
- msgseqno seqno : mach_port_seqno_t;
- #endif SEQNOS
- memory_control : memory_object_control_t =
- MACH_MSG_TYPE_MAKE_SEND
- ctype: mach_port_t;
- offset : vm_offset_t;
- length : vm_size_t);
-
- /*
- * Indicate that a previous memory_object_data_supply has been
- * completed. Note that this call is made on whatever
- * port is specified in the memory_object_data_supply; that port
- * need not be the memory object port itself.
- *
- * The result parameter indicates what happened during the supply.
- * If it is not KERN_SUCCESS, then error_offset identifies the
- * first offset at which a problem occurred. The pagein operation
- * stopped at this point. Note that the only failures reported
- * by this mechanism are KERN_MEMORY_PRESENT. All other failures
- * (invalid argument, error on pagein of supplied data in manager's
- * address space) cause the entire operation to fail.
- *
- * XXX Check what actually happens in latter case!
- *
- * [No reply expected.]
- */
- simpleroutine memory_object_supply_completed(
- memory_object : memory_object_t =
- polymorphic|MACH_MSG_TYPE_PORT_SEND_ONCE
- ctype: mach_port_t;
- #if SEQNOS
- msgseqno seqno : mach_port_seqno_t;
- #endif SEQNOS
- memory_control : memory_object_control_t =
- MACH_MSG_TYPE_MAKE_SEND
- ctype: mach_port_t;
- offset : vm_offset_t;
- length : vm_size_t;
- result : kern_return_t;
- error_offset : vm_offset_t);
-
- /*
- * Return data to manager. This call is used in place of data_write
- * for objects initialized by object_ready instead of set_attributes.
- * This call indicates whether the returned data is dirty and whether
- * the kernel kept a copy. Precious data remains precious if the
- * kernel keeps a copy. The indication that the kernel kept a copy
- * is only a hint if the data is not precious; the cleaned copy may
- * be discarded without further notifying the manager.
- *
- * [Reply should be vm_deallocate to release the data.]
- */
- simpleroutine memory_object_data_return(
- memory_object : memory_object_t;
- #if SEQNOS
- msgseqno seqno : mach_port_seqno_t;
- #endif SEQNOS
- memory_control : memory_object_control_t =
- MACH_MSG_TYPE_MAKE_SEND
- ctype: mach_port_t;
- offset : vm_offset_t;
- data : pointer_t;
- dirty : boolean_t;
- kernel_copy : boolean_t);
-
- /*
- * XXX Warning: This routine does NOT contain a memory_object_control_t
- * XXX because the memory_object_change_attributes call may cause
- * XXX memory object termination (by uncaching the object). This would
- * XXX yield an invalid port.
- */
-
- simpleroutine memory_object_change_completed(
- memory_object : memory_object_t =
- polymorphic|MACH_MSG_TYPE_PORT_SEND_ONCE
- ctype: mach_port_t;
- #if SEQNOS
- msgseqno seqno : mach_port_seqno_t;
- #endif SEQNOS
- may_cache : boolean_t;
- copy_strategy : memory_object_copy_strategy_t);
-