[ac7d5ef0] | 1 | /* |
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| 2 | * Extension Manager |
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| 3 | * |
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| 4 | * |
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| 5 | * COPYRIGHT (c) 1989, 1990, 1991, 1992, 1993, 1994. |
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| 6 | * On-Line Applications Research Corporation (OAR). |
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| 7 | * All rights assigned to U.S. Government, 1994. |
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| 8 | * |
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| 9 | * This material may be reproduced by or for the U.S. Government pursuant |
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| 10 | * to the copyright license under the clause at DFARS 252.227-7013. This |
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| 11 | * notice must appear in all copies of this file and its derivatives. |
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| 12 | * |
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| 13 | * $Id$ |
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| 14 | */ |
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| 15 | |
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| 16 | #include <rtems/system.h> |
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| 17 | #include <rtems/object.h> |
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| 18 | #include <rtems/thread.h> |
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| 19 | #include <rtems/extension.h> |
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| 20 | |
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| 21 | /*PAGE |
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| 22 | * |
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| 23 | * _Extension_Manager_initialization |
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| 24 | * |
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| 25 | * This routine initializes all extension manager related data structures. |
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| 26 | * |
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| 27 | * Input parameters: |
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| 28 | * maximum_extensions - number of extensions to initialize |
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| 29 | * |
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| 30 | * Output parameters: NONE |
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| 31 | */ |
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| 32 | |
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| 33 | void _Extension_Manager_initialization( |
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| 34 | unsigned32 maximum_extensions |
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| 35 | ) |
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| 36 | { |
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| 37 | _Objects_Initialize_information( |
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| 38 | &_Extension_Information, |
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| 39 | FALSE, |
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| 40 | maximum_extensions, |
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| 41 | sizeof( Extension_Control ) |
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| 42 | ); |
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| 43 | } |
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| 44 | |
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| 45 | /*PAGE |
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| 46 | * |
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| 47 | * rtems_extension_create |
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| 48 | * |
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| 49 | * This directive creates a extension and performs some initialization. |
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| 50 | * |
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| 51 | * Input parameters: |
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| 52 | * name - extension name |
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| 53 | * extension_table - pointer to extension set information |
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| 54 | * id - pointer to extension id |
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| 55 | * |
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| 56 | * Output parameters: |
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| 57 | * id - extension id |
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| 58 | * RTEMS_SUCCESSFUL - if successful |
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| 59 | * error code - if unsuccessful |
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| 60 | */ |
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| 61 | |
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| 62 | rtems_status_code rtems_extension_create( |
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| 63 | Objects_Name name, |
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| 64 | rtems_extensions_table *extension_table, |
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| 65 | Objects_Id *id |
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| 66 | ) |
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| 67 | { |
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| 68 | Extension_Control *the_extension; |
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| 69 | |
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| 70 | if ( !_Objects_Is_name_valid( name ) ) |
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| 71 | return ( RTEMS_INVALID_NAME ); |
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| 72 | |
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| 73 | _Thread_Disable_dispatch(); /* to prevent deletion */ |
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| 74 | |
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| 75 | the_extension = _Extension_Allocate(); |
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| 76 | |
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| 77 | if ( !the_extension ) { |
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| 78 | _Thread_Enable_dispatch(); |
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| 79 | return( RTEMS_TOO_MANY ); |
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| 80 | } |
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| 81 | |
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| 82 | _User_extensions_Add_set( &the_extension->Extension, extension_table ); |
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| 83 | |
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| 84 | _Objects_Open( &_Extension_Information, &the_extension->Object, name ); |
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| 85 | |
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| 86 | *id = the_extension->Object.id; |
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| 87 | _Thread_Enable_dispatch(); |
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| 88 | return( RTEMS_SUCCESSFUL ); |
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| 89 | } |
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| 90 | |
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| 91 | /*PAGE |
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| 92 | * |
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| 93 | * rtems_extension_ident |
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| 94 | * |
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| 95 | * This directive returns the system ID associated with |
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| 96 | * the extension name. |
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| 97 | * |
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| 98 | * Input parameters: |
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| 99 | * name - user defined message queue name |
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| 100 | * id - pointer to extension id |
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| 101 | * |
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| 102 | * Output parameters: |
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| 103 | * *id - message queue id |
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| 104 | * RTEMS_SUCCESSFUL - if successful |
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| 105 | * error code - if unsuccessful |
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| 106 | */ |
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| 107 | |
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| 108 | rtems_status_code rtems_extension_ident( |
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| 109 | Objects_Name name, |
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| 110 | Objects_Id *id |
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| 111 | ) |
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| 112 | { |
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| 113 | return _Objects_Name_to_id( |
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| 114 | &_Extension_Information, |
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| 115 | name, |
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| 116 | RTEMS_SEARCH_LOCAL_NODE, |
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| 117 | id |
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| 118 | ); |
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| 119 | } |
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| 120 | |
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| 121 | /*PAGE |
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| 122 | * |
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| 123 | * rtems_extension_delete |
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| 124 | * |
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| 125 | * This directive allows a thread to delete a extension. |
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| 126 | * |
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| 127 | * Input parameters: |
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| 128 | * id - extension id |
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| 129 | * |
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| 130 | * Output parameters: |
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| 131 | * RTEMS_SUCCESSFUL - if successful |
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| 132 | * error code - if unsuccessful |
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| 133 | */ |
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| 134 | |
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| 135 | rtems_status_code rtems_extension_delete( |
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| 136 | Objects_Id id |
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| 137 | ) |
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| 138 | { |
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| 139 | Extension_Control *the_extension; |
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| 140 | Objects_Locations location; |
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| 141 | |
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| 142 | the_extension = _Extension_Get( id, &location ); |
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| 143 | switch ( location ) { |
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| 144 | case OBJECTS_ERROR: |
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| 145 | case OBJECTS_REMOTE: /* should never return this */ |
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| 146 | return( RTEMS_INVALID_ID ); |
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| 147 | case OBJECTS_LOCAL: |
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| 148 | _User_extensions_Remove_set( &the_extension->Extension ); |
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| 149 | _Objects_Close( &_Extension_Information, &the_extension->Object ); |
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| 150 | _Extension_Free( the_extension ); |
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| 151 | _Thread_Enable_dispatch(); |
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| 152 | return( RTEMS_SUCCESSFUL ); |
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| 153 | } |
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| 154 | |
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| 155 | return( RTEMS_INTERNAL_ERROR ); /* unreached - only to remove warnings */ |
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| 156 | } |
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