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table_array.h
资源名称：net-snmp-5.2.2.rar　[点击查看]
上传用户：wxp200602
上传日期：2007-10-30
资源大小：4028k
文件大小：5k
源码类别：

SNMP编程

开发平台：

Unix_Linux

table_array.h：源码内容
  1. /*
  2.  * table_array.h
  3.  * $Id: table_array.h,v 5.11 2004/09/14 02:29:15 rstory Exp $
  4.  */
  5. #ifndef _TABLE_ARRAY_HANDLER_H_
  6. #define _TABLE_ARRAY_HANDLER_H_
  8. #ifdef __cplusplus
  9. extern          "C" {
  10. #endif
  12.     /*
  13.      * The table array helper is designed to simplify the task of
  14.      * writing a table handler for the net-snmp agent when the data being
  15.      * accessed is in an oid sorted form and must be accessed externally.
  16.      * 
  17.      * Functionally, it is a specialized version of the more
  18.      * generic table helper but easies the burden of GETNEXT processing by
  19.      * retrieving the appropriate row for ead index through
  20.      * function calls which should be supplied by the module that wishes
  21.      * help.  The module the table_array helps should, afterwards,
  22.      * never be called for the case of "MODE_GETNEXT" and only for the GET
  23.      * and SET related modes instead.
  24.      */
  26. #include <net-snmp/library/container.h>
  27. #include <net-snmp/agent/table.h>
  29. #define TABLE_ARRAY_NAME "table_array"
  31.     /*
  32.      * group_item is to allow us to keep a list of requests without
  33.      * disrupting the actual netsnmp_request_info list.
  34.      */
  35.     typedef struct netsnmp_request_group_item_s {
  36.         netsnmp_request_info *ri;
  37.         netsnmp_table_request_info *tri;
  38.         struct netsnmp_request_group_item_s *next;
  39.     } netsnmp_request_group_item;
  41.     /*
  42.      * structure to keep a list of requests for each unique index
  43.      */
  44.     typedef struct netsnmp_request_group_s {
  45.        /*
  46.         * index for this row. points to someone else's memory, so
  47.         * don't free it!
  48.         */
  49.         netsnmp_index               index;
  51.        /*
  52.         * container in which rows belong
  53.         */
  54.         netsnmp_container           *table;
  56.        /*
  57.         * actual old and new rows
  58.         */
  59.         netsnmp_index               *existing_row;
  60.         netsnmp_index               *undo_info;
  62.        /*
  63.         * flags
  64.         */
  65.        char                          row_created;
  66.        char                          row_deleted;
  67.        char                          fill1;
  68.        char                          fill2;
  70.        /*
  71.         * requests for this row
  72.         */
  73.         netsnmp_request_group_item  *list;
  75.         int                          status;
  77.         void                        *rg_void;
  79.     } netsnmp_request_group;
  81.     typedef int     (Netsnmp_User_Row_Operation_c) (const void *lhs,
  82.                                                     const void *rhs);
  83.     typedef int     (Netsnmp_User_Row_Operation) (void *lhs, void *rhs);
  84.     typedef int     (Netsnmp_User_Get_Processor) (netsnmp_request_info *,
  85.                                                   netsnmp_index
  86.                                                   *,
  87.                                                   netsnmp_table_request_info
  88.                                                   *);
  89.     typedef netsnmp_index
  90.         *(UserRowMethod) (netsnmp_index *);
  91.     typedef int     (Netsnmp_User_Row_Action) (netsnmp_index *,
  92.                                                netsnmp_index *,
  93.                                                netsnmp_request_group *);
  94.     typedef void    (Netsnmp_User_Group_Method) (netsnmp_request_group *);
  96.     /*
  97.      * structure for array callbacks
  98.      */
  99.     typedef struct netsnmp_table_array_callbacks_s {
  101.         Netsnmp_User_Row_Operation   *row_copy;
  102.         Netsnmp_User_Row_Operation_c *row_compare;
  104.         Netsnmp_User_Get_Processor *get_value;
  107.         Netsnmp_User_Row_Action *can_activate;
  108.         Netsnmp_User_Row_Action *activated;
  109.         Netsnmp_User_Row_Action *can_deactivate;
  110.         Netsnmp_User_Row_Action *deactivated;
  111.         Netsnmp_User_Row_Action *can_delete;
  113.         UserRowMethod  *create_row;
  114.         UserRowMethod  *duplicate_row;
  115.         UserRowMethod  *delete_row;
  117.         Netsnmp_User_Group_Method *set_reserve1;
  118.         Netsnmp_User_Group_Method *set_reserve2;
  119.         Netsnmp_User_Group_Method *set_action;
  120.         Netsnmp_User_Group_Method *set_commit;
  121.         Netsnmp_User_Group_Method *set_free;
  122.         Netsnmp_User_Group_Method *set_undo;
  124.        /** not callbacks, but this is a useful place for them... */
  125.        netsnmp_container* container;
  126.        char can_set;
  128.     } netsnmp_table_array_callbacks;
  131.     int            
  132.         netsnmp_table_container_register(netsnmp_handler_registration *reginfo,
  133.                                      netsnmp_table_registration_info
  134.                                      *tabreq,
  135.                                      netsnmp_table_array_callbacks *cb,
  136.                                      netsnmp_container *container,
  137.                                      int group_rows);
  139.     netsnmp_container * netsnmp_extract_array_context(netsnmp_request_info *);
  141.     Netsnmp_Node_Handler netsnmp_table_array_helper_handler;
  143.     int
  144.     netsnmp_table_array_check_row_status(netsnmp_table_array_callbacks *cb,
  145.                                          netsnmp_request_group *ag,
  146.                                          long *rs_new, long *rs_old);
  148. #ifdef __cplusplus
  149. }
  150. #endif
  152. #endif                          /* _TABLE_ARRAY_HANDLER_H_ */