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## -*- c -*-
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######################################################################
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## Do the .h file
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######################################################################
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@open ${name}_access.h@
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/*
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* Note: this file originally auto-generated by mib2c
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* using mib2c.access_functions.conf
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*/
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#ifndef $name.uc_ACCESS_H
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#define $name.uc_ACCESS_H
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@foreach $t table@
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/** User-defined data access functions for data in table $t */
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/** row level accessors */
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Netsnmp_First_Data_Point ${t}_get_first_data_point;
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Netsnmp_Next_Data_Point ${t}_get_next_data_point;
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int ${t}_commit_row(void **my_data_context, int new_or_del);
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void * ${t}_create_data_context(netsnmp_variable_list *index_data, int column);
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/** column accessors */
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@foreach $c column@
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@if $c.access =~ /(Read|Create)/@
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$c.decl *get_$c(void *data_context, size_t *ret_len);
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@end@
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@if $c.access =~ /(Write|Create)/@
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int set_$c(void *data_context, $c.decl *val, size_t val_len);
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@end@
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@end@
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@end@
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#endif /* $name.uc_ACCESS_H */
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######################################################################
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## Do the .c file
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######################################################################
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@open ${name}_access.c@
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/*
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* Note: this file originally auto-generated by mib2c
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* using mib2c.access_functions.conf
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*/
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#include <net-snmp/net-snmp-config.h>
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#include <net-snmp/net-snmp-includes.h>
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#include <net-snmp/agent/net-snmp-agent-includes.h>
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#include "${name}_access.h"
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#include "${name}_enums.h"
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@foreach $t table@
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/** returns the first data point within the $t table data.
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Set the my_loop_context variable to the first data point structure
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of your choice (from which you can find the next one). This could
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be anything from the first node in a linked list, to an integer
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pointer containing the beginning of an array variable.
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Set the my_data_context variable to something to be returned to
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you later that will provide you with the data to return in a given
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row. This could be the same pointer as what my_loop_context is
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set to, or something different.
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The put_index_data variable contains a list of snmp variable
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bindings, one for each index in your table. Set the values of
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each appropriately according to the data matching the first row
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and return the put_index_data variable at the end of the function.
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*/
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netsnmp_variable_list *
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${t}_get_first_data_point(void **my_loop_context, void **my_data_context,
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netsnmp_variable_list *put_index_data,
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netsnmp_iterator_info *mydata)
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{
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netsnmp_variable_list *vptr;
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*my_loop_context = /** XXX */;
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*my_data_context = /** XXX */;
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vptr = put_index_data;
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@foreach $idx index@
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snmp_set_var_value(vptr, /** XXX: $idx data */, /** XXX: length of $idx data */);
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vptr = vptr->next_variable;
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@end@
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return put_index_data;
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}
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/** functionally the same as ${t}_get_first_data_point, but
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my_loop_context has already been set to a previous value and should
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be updated to the next in the list. For example, if it was a
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linked list, you might want to cast it to your local data type and
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then return my_loop_context->next. The my_data_context pointer
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should be set to something you need later and the indexes in
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put_index_data updated again. */
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netsnmp_variable_list *
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${t}_get_next_data_point(void **my_loop_context, void **my_data_context,
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netsnmp_variable_list *put_index_data,
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netsnmp_iterator_info *mydata)
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{
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netsnmp_variable_list *vptr;
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*my_loop_context = /** XXX */;
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*my_data_context = /** XXX */;
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vptr = put_index_data;
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@foreach $idx index@
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snmp_set_var_value(vptr, /** XXX: $idx data */, /** XXX: length of $idx data */);
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vptr = vptr->next_variable;
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@end@
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return put_index_data;
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}
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/** Create a data_context for non-existent rows that SETs are performed on.
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* return a void * pointer which will be passed to subsequent get_XXX
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* and set_XXX functions for data retrieval and modification during
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* this SET request.
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*
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* The indexes are encoded (in order) into the index_data pointer,
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* and the column object which triggered the row creation is available
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* via the column parameter, if it would be helpful to use that information.
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*/
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void *
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${t}_create_data_context(netsnmp_variable_list *index_data, int column) {
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return NULL; /* XXX: you likely want to return a real pointer */
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}
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/** If the implemented set_* functions don't operate directly on the
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real-live data (which is actually recommended), then this function
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can be used to take a given my_data_context pointer and "commit" it
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to whereever the modified data needs to be put back to. For
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example, if this was a routing table you could publish the modified
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routes back into the kernel at this point.
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new_or_del will be set to 1 if new, or -1 if it should be deleted
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or 0 if it is just a modification of an existing row.
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If you free the data yourself, make sure to *my_data_context = NULL */
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int
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${t}_commit_row(void **my_data_context, int new_or_del)
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{
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/** Add any necessary commit code here */
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/* */
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/* return no errors. And there shouldn't be any!!! Ever!!! You
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should have checked the values long before this. */
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return SNMP_ERR_NOERROR;
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}
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/* User-defined data access functions (per column) for data in table $t */
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/*
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* NOTE:
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* - these get_ routines MUST return data that will not be freed (ie,
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* use static variables or persistent data). It will be copied, if
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* needed, immediately after the get_ routine has been called.
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* - these SET routines must copy the incoming data and can not take
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* ownership of the memory passed in by the val pointer.
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*/
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@foreach $c column@
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@if $c.access =~ /(Read|Create)/@
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/** XXX: return a data pointer to the data for the $c column and set
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ret_len to its proper size in bytes. */
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$c.decl *get_$c(void *data_context, size_t *ret_len) {
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return NULL; /** XXX: replace this with a pointer to a real value */
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}
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@end@
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@if $c.access =~ /(Write|Create)/@
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/** XXX: Set the value of the $c column and return
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SNMP_ERR_NOERROR on success
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SNMP_ERR_XXX for SNMP deterministic error codes
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SNMP_ERR_GENERR on generic failures (a last result response). */
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int set_$c(void *data_context, $c.decl *val, size_t val_len) {
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return SNMP_ERR_NOERROR; /** XXX: change if an error occurs */
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}
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@end@
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@end@
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@end@
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