The Design and Implementation of the FreeBSD Operating System, Second Edition
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FreeBSD/Linux Kernel Cross Reference
sys/man/memory_object_data_provided.man

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    1 .\" 
    2 .\" Mach Operating System
    3 .\" Copyright (c) 1991,1990 Carnegie Mellon University
    4 .\" All Rights Reserved.
    5 .\" 
    6 .\" Permission to use, copy, modify and distribute this software and its
    7 .\" documentation is hereby granted, provided that both the copyright
    8 .\" notice and this permission notice appear in all copies of the
    9 .\" software, derivative works or modified versions, and any portions
   10 .\" thereof, and that both notices appear in supporting documentation.
   11 .\" 
   12 .\" CARNEGIE MELLON ALLOWS FREE USE OF THIS SOFTWARE IN ITS "AS IS"
   13 .\" CONDITION.  CARNEGIE MELLON DISCLAIMS ANY LIABILITY OF ANY KIND FOR
   14 .\" ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
   15 .\" 
   16 .\" Carnegie Mellon requests users of this software to return to
   17 .\" 
   18 .\"  Software Distribution Coordinator  or  Software.Distribution@CS.CMU.EDU
   19 .\"  School of Computer Science
   20 .\"  Carnegie Mellon University
   21 .\"  Pittsburgh PA 15213-3890
   22 .\" 
   23 .\" any improvements or extensions that they make and grant Carnegie Mellon
   24 .\" the rights to redistribute these changes.
   25 .\" 
   26 .\" 
   27 .\" HISTORY
   28 .\" $Log:       memory_object_data_provided.man,v $
   29 .\" Revision 2.5  93/05/10  19:33:33  rvb
   30 .\"     updated
   31 .\"     [93/04/21  16:08:17  lli]
   32 .\" 
   33 .\" Revision 2.4  91/05/14  17:09:04  mrt
   34 .\"     Correcting copyright
   35 .\" 
   36 .\" Revision 2.3  91/02/14  14:12:46  mrt
   37 .\"     Changed to new Mach copyright
   38 .\"     [91/02/12  18:13:07  mrt]
   39 .\" 
   40 .\" Revision 2.2  90/08/07  18:39:59  rpd
   41 .\"     Created.
   42 .\" 
   43 .TH memory_object_data_provided 2 12/18/89
   44 .CM 4
   45 .SH NAME
   46 .nf
   47 memory_object_data_provided  \-  gives kernel data for memory object
   48 .SH SYNOPSIS
   49 .nf
   50 .ft B
   51 #include <mach.h>
   52 
   53 .nf
   54 .ft B
   55 kern_return_t memory_object_data_provided(memory_control,
   56                                 offset, data, data_count, lock_value)
   57         mach_port_t
   58                         memory_control;
   59         vm_offset_t     offset;
   60         vm_offset_t     data;
   61         vm_size_t       data_count;
   62         vm_prot_t       lock_value;
   63 
   64 
   65 
   66 .fi
   67 .ft P
   68 .SH DESCRIPTION
   69 .B memory_object_data_provided
   70 supplies the kernel with data for the
   71 specified memory object.  Ordinarily, memory managers should only provide data in
   72 reponse to 
   73 .B memory_object_data_request
   74 calls from the kernel. 
   75 The 
   76 .B lock_value
   77 specifies what type of access will 
   78 .B not
   79 be allowed
   80 to the data range. The lock values must be one or more of the set: 
   81 .B VM_PROT_NONE, VM_PROT_READ, VM_PROT_WRITE, VM_PROT_EXECUTE
   82 and
   83 .B VM_PROT_ALL
   84 as defined in 
   85 .B <mach/vm_prot.h>
   86 . 
   87 
   88 .SH ARGUMENTS
   89 .TP 15
   90 .B
   91 memory_control
   92 The port, provided by the kernel 
   93 in a 
   94 .B memory_object_init
   95 call, to which cache management requests may be issued.
   96 .TP 15
   97 .B
   98 offset
   99 An offset within a memory object, in bytes.  This must be
  100 page aligned.
  101 .TP 15
  102 .B
  103 data
  104 Data that is being provided to the kernel. This is a pointer
  105 to the data.
  106 .TP 15
  107 .B
  108 data_count
  109 The amount of data to be provided.  Must be an integral number
  110 of memory object pages.
  111 .TP 15
  112 .B
  113 lock_value
  114 A protection value indicating those forms of access that should
  115 .B not
  116 be permitted to the specified cached data.
  117 
  118 .SH DIAGNOSTICS
  119 .TP 25
  120 KERN_SUCCESS
  121 This routine does not receive a reply message (and consequently
  122 has no return value), so only message transmission errors apply.
  123 
  124 .SH SEE ALSO
  125 .B memory_object_data_request, memory_object_data_error, memory_object_lock_request
  126 

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