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    10 <!DOCTYPE concept

    11   PUBLIC "-//OASIS//DTD DITA Concept//EN" "concept.dtd">

    12 <concept id="GUID-9A5D0303-6C22-53A1-86DA-0431F726010B" xml:lang="en"><title>Messaging

    13 Dependencies</title><prolog><metadata><keywords/></metadata></prolog><conbody>

    14 <p>The following are the major dependencies of other subsystems on the Messaging

    15 subsystem: </p>

    16 <ul>

    17 <li id="GUID-E2E94CC5-C780-5B7C-8DC9-9CC4D4FF5853"><p> <b>File server:</b> needs

    18 to be able to clone open file handles. This allow processes to access files

    19 in another process’s data cages area. </p> </li>

    20 <li id="GUID-2FE4E644-AA53-524E-9420-419F19515CC5"><p> <b>Task scheduler:</b> needs

    21 to store the capabilities of the process that creates a schedule within the

    22 task information for that schedule. The task scheduler must data cage the

    23 schedule information. </p> </li>

    24 <li id="GUID-0BAF2FEE-3D7E-58DF-A159-8F5F47B3307E"><p> <b>Kernel:</b> a process

    25 needs to be able to obtain the Secure ID (SID) (that is allocated by the kernel

    26 to a process) and capabilities of the process that started it. </p> </li>

    27 <li id="GUID-C5550F67-A0B1-5564-B83C-573EBB8A6DA5"><p> <b>Application Architecture:</b> ability

    28 to launch an application by passing an open file handle that can then be used

    29 by the launched application. </p> </li>

    30 <li id="GUID-386D0E24-24C6-5464-88E4-517C821B26DA"><p> <b>Central repository:</b> ability

    31 to assign different security capabilities to settings within a repository,

    32 and to be able to guarantee committing multiple settings. This can be either

    33 as APIs to set an array of settings or as APIs to store settings in memory

    34 and provide a commit to disk API. </p> </li>

    35 <li id="GUID-A169571C-CFCB-52E3-A820-3FAE33623C95"><p> <b>ESock:</b> hosts

    36 the service-providing protocol modules and network interfaces. </p> </li>

    37 <li id="GUID-931E092A-C043-51FA-BE78-136FCC849882"><p> <b>ETel:</b> a telephony

    38 server to provide a generic interface to initiate, control, and terminate

    39 telephone calls. </p> </li>

    40 <li id="GUID-5947368C-87C3-54AA-B8C8-5C529CA25627"><p> <b>SQL:</b> a component

    41 that provides an SQL database service. </p> </li>

    42 </ul>

    43 </conbody><related-links>

    44 <link href="GUID-4CEB52EC-8F08-53B7-A900-AF163316D442.dita"><linktext>Messaging

    45 Overview</linktext></link>

    46 <link href="GUID-5E8AA6B6-38EB-5347-BA30-F9FF4BF7C107.dita#GUID-5E8AA6B6-38EB-5347-BA30-F9FF4BF7C107/GUID-10265557-F31B-50B3-A955-A548A5A78D7B">

    47 <linktext>Operating with the SQL database</linktext></link>

    48 </related-links></concept>