inetnettomediatable_interface.c

snmp的源代码,已经在我的ubuntu下编译通过

     */
    rc = inetNetToMediaTable_undo_cleanup(rowreq_ctx);
    if (MFD_SUCCESS != rc) {
        /*
         * nothing we can do about it but log it
         */
        DEBUGMSGTL(("verbose:inetNetToMediaTable:mfd", "error %d from "
                    "inetNetToMediaTable_undo_cleanup\n", rc));
    }

    /*
     * release undo context, if needed
     */
    if (rowreq_ctx->undo) {
        inetNetToMediaTable_release_data(rowreq_ctx->undo);
        rowreq_ctx->undo = NULL;
    }

    /*
     * clear set flags
     */
    rowreq_ctx->column_set_flags = 0;

    return SNMP_ERR_NOERROR;
}                               /* _mfd_inetNetToMediaTable_undo_cleanup */

/*----------------------------------------------------------------------
 *
 * SET: Set values
 *
 *---------------------------------------------------------------------*/
/*
 * @internal
 * Set the value for a particular column
 */
NETSNMP_STATIC_INLINE int
_inetNetToMediaTable_set_column(inetNetToMediaTable_rowreq_ctx *
                                rowreq_ctx, netsnmp_variable_list * var,
                                int column)
{
    int             rc = SNMPERR_SUCCESS;

    DEBUGMSGTL(("internal:inetNetToMediaTable:_inetNetToMediaTable_set_column", "called\n"));

    netsnmp_assert(NULL != rowreq_ctx);

    switch (column) {

        /*
         * inetNetToMediaPhysAddress(4)/PhysAddress/ASN_OCTET_STR/char(char)//L/A/W/e/R/d/H 
         */
    case COLUMN_INETNETTOMEDIAPHYSADDRESS:
        rowreq_ctx->column_set_flags |= FLAG_INETNETTOMEDIAPHYSADDRESS;
        rc = inetNetToMediaPhysAddress_set(rowreq_ctx,
                                           (char *) var->val.string,
                                           var->val_len);
        break;

        /*
         * inetNetToMediaType(6)/INTEGER/ASN_INTEGER/long(u_long)//l/A/W/E/r/D/h 
         */
    case COLUMN_INETNETTOMEDIATYPE:
        if (var->val_len != sizeof(u_long)) {
            rc = SNMP_ERR_WRONGLENGTH;
            snmp_log(LOG_ERR,
                     "varbind size of %d does not match expected size %d\n",
                     var->val_len, sizeof(u_long));
            break;
        }
        rowreq_ctx->column_set_flags |= FLAG_INETNETTOMEDIATYPE;
        rc = inetNetToMediaType_set(rowreq_ctx,
                                    *((u_long *) var->val.string));
        break;

        /*
         * inetNetToMediaRowStatus(8)/RowStatus/ASN_INTEGER/long(u_long)//l/A/W/E/r/d/h 
         */
    case COLUMN_INETNETTOMEDIAROWSTATUS:
        if (var->val_len != sizeof(u_long)) {
            rc = SNMP_ERR_WRONGLENGTH;
            snmp_log(LOG_ERR,
                     "varbind size of %d does not match expected size %d\n",
                     var->val_len, sizeof(u_long));
            break;
        }
        rowreq_ctx->column_set_flags |= FLAG_INETNETTOMEDIAROWSTATUS;
        rc = inetNetToMediaRowStatus_set(rowreq_ctx,
                                         *((u_long *) var->val.string));
        break;

    default:
        snmp_log(LOG_ERR,
                 "unknown column %d in _inetNetToMediaTable_set_column\n",
                 column);
        break;
    }

    return rc;
}                               /* _inetNetToMediaTable_set_column */

int
_mfd_inetNetToMediaTable_set_values(netsnmp_mib_handler *handler,
                                    netsnmp_handler_registration *reginfo,
                                    netsnmp_agent_request_info
                                    *agtreq_info,
                                    netsnmp_request_info *requests)
{
    inetNetToMediaTable_rowreq_ctx *rowreq_ctx =
        netsnmp_container_table_row_extract(requests);
    netsnmp_table_request_info *tri;
    int             rc = SNMP_ERR_NOERROR;

    DEBUGMSGTL(("internal:inetNetToMediaTable:_mfd_inetNetToMediaTable_set_values", "called\n"));

    netsnmp_assert(NULL != rowreq_ctx);

    rowreq_ctx->column_set_flags = 0;
    for (; requests; requests = requests->next) {
        /*
         * set column data
         */
        tri = netsnmp_extract_table_info(requests);
        if (NULL == tri)
            continue;

        rc = _inetNetToMediaTable_set_column(rowreq_ctx,
                                             requests->requestvb,
                                             tri->colnum);
        if (MFD_SUCCESS != rc) {
            DEBUGMSGTL(("verbose:inetNetToMediaTable:mfd", "error %d from "
                        "inetNetToMediaTable_set_column\n", rc));
            netsnmp_set_request_error(agtreq_info, requests,
                                      SNMP_VALIDATE_ERR(rc));
        }
    }                           /* for results */

    return SNMP_ERR_NOERROR;
}                               /* _mfd_inetNetToMediaTable_set_values */

/*----------------------------------------------------------------------
 *
 * SET: commit
 *
 *---------------------------------------------------------------------*/
/**
 * @internal
 * commit the values
 */
int
_mfd_inetNetToMediaTable_commit(netsnmp_mib_handler *handler,
                                netsnmp_handler_registration *reginfo,
                                netsnmp_agent_request_info *agtreq_info,
                                netsnmp_request_info *requests)
{
    int             rc;
    inetNetToMediaTable_rowreq_ctx *rowreq_ctx =
        netsnmp_container_table_row_extract(requests);

    DEBUGMSGTL(("internal:inetNetToMediaTable:_mfd_inetNetToMediaTable_commit", "called\n"));

    netsnmp_assert(NULL != rowreq_ctx);

    rc = inetNetToMediaTable_commit(rowreq_ctx);
    if (MFD_SUCCESS != rc) {
        DEBUGMSGTL(("verbose:inetNetToMediaTable:mfd", "error %d from "
                    "inetNetToMediaTable_commit\n", rc));
        netsnmp_request_set_error_all(requests, SNMP_VALIDATE_ERR(rc));
    }

    return SNMP_ERR_NOERROR;
}

int
_mfd_inetNetToMediaTable_undo_commit(netsnmp_mib_handler *handler,
                                     netsnmp_handler_registration *reginfo,
                                     netsnmp_agent_request_info
                                     *agtreq_info,
                                     netsnmp_request_info *requests)
{
    int             rc;
    inetNetToMediaTable_rowreq_ctx *rowreq_ctx =
        netsnmp_container_table_row_extract(requests);

    DEBUGMSGTL(("internal:inetNetToMediaTable:_mfd_inetNetToMediaTable_undo_commit", "called\n"));

    netsnmp_assert(NULL != rowreq_ctx);

    rc = inetNetToMediaTable_undo_commit(rowreq_ctx);
    if (MFD_SUCCESS != rc) {
        /*
         * nothing we can do about it but log it
         */
        DEBUGMSGTL(("verbose:inetNetToMediaTable:mfd", "error %d from "
                    "inetNetToMediaTable_undo_commit\n", rc));
    }

    return SNMP_ERR_NOERROR;
}                               /* _mfd_inetNetToMediaTable_commit */

/*----------------------------------------------------------------------
 *
 * SET: Undo
 *
 *---------------------------------------------------------------------*/
/**
 * @internal
 * undo the value for a particular column
 */
NETSNMP_STATIC_INLINE int
_inetNetToMediaTable_undo_column(inetNetToMediaTable_rowreq_ctx *
                                 rowreq_ctx, netsnmp_variable_list * var,
                                 int column)
{
    int             rc = SNMPERR_SUCCESS;

    DEBUGMSGTL(("internal:inetNetToMediaTable:_inetNetToMediaTable_undo_column", "called\n"));

    netsnmp_assert(NULL != rowreq_ctx);

    switch (column) {

        /*
         * inetNetToMediaPhysAddress(4)/PhysAddress/ASN_OCTET_STR/char(char)//L/A/W/e/R/d/H 
         */
    case COLUMN_INETNETTOMEDIAPHYSADDRESS:
        rc = inetNetToMediaPhysAddress_undo(rowreq_ctx);
        break;

        /*
         * inetNetToMediaType(6)/INTEGER/ASN_INTEGER/long(u_long)//l/A/W/E/r/D/h 
         */
    case COLUMN_INETNETTOMEDIATYPE:
        rc = inetNetToMediaType_undo(rowreq_ctx);
        break;

        /*
         * inetNetToMediaRowStatus(8)/RowStatus/ASN_INTEGER/long(u_long)//l/A/W/E/r/d/h 
         */
    case COLUMN_INETNETTOMEDIAROWSTATUS:
        rc = inetNetToMediaRowStatus_undo(rowreq_ctx);
        break;

    default:
        snmp_log(LOG_ERR,
                 "unknown column %d in _inetNetToMediaTable_undo_column\n",
                 column);
        break;
    }

    return rc;
}                               /* _inetNetToMediaTable_undo_column */

int
_mfd_inetNetToMediaTable_undo_values(netsnmp_mib_handler *handler,
                                     netsnmp_handler_registration *reginfo,
                                     netsnmp_agent_request_info
                                     *agtreq_info,
                                     netsnmp_request_info *requests)
{
    int             rc;
    inetNetToMediaTable_rowreq_ctx *rowreq_ctx =
        netsnmp_container_table_row_extract(requests);
    netsnmp_table_request_info *tri;

    DEBUGMSGTL(("internal:inetNetToMediaTable:_mfd_inetNetToMediaTable_undo_values", "called\n"));

    netsnmp_assert(NULL != rowreq_ctx);

    for (; requests; requests = requests->next) {
        /*
         * set column data
         */
        tri = netsnmp_extract_table_info(requests);
        if (NULL == tri)
            continue;

        rc = _inetNetToMediaTable_undo_column(rowreq_ctx,
                                              requests->requestvb,
                                              tri->colnum);
        if (MFD_SUCCESS != rc) {
            /*
             * nothing we can do about it but log it
             */
            DEBUGMSGTL(("verbose:inetNetToMediaTable:mfd", "error %d from "
                        "inetNetToMediaTable_undo_column\n", rc));
        }
    }                           /* for results */

    return SNMP_ERR_NOERROR;
}                               /* _mfd_inetNetToMediaTable_undo_values */

/***********************************************************************
 *
 * DATA ACCESS
 *
 ***********************************************************************/
/**
 * @internal
 */
static int
_cache_load(netsnmp_cache * cache, void *vmagic)
{
    DEBUGTRACE;

    if ((NULL == cache) || (NULL == cache->magic)) {
        snmp_log(LOG_ERR,
                 "invalid cache for inetNetToMediaTable_cache_load\n");
        return -1;
    }
    DEBUGMSGTL(("inetNetToMediaTable/cache", "inetNetToMedia_load %p/%p\n",
                cache, cache->magic));

    netsnmp_assert((0 == cache->valid) || (1 == cache->expired));

    /*
     * call user code
     */
    return inetNetToMediaTable_cache_load((netsnmp_container *) cache->
                                          magic);
}                               /* _cache_load */

/**
 * @internal
 */
static void
_cache_item_free(inetNetToMediaTable_rowreq_ctx * rowreq_ctx,
                 void *context)
{
    DEBUGMSGTL(("internal:inetNetToMediaTable:_cache_item_free",
                "called\n"));

    if (NULL == rowreq_ctx)
        return;

    inetNetToMediaTable_release_rowreq_ctx(rowreq_ctx);
}                               /* _cache_item_free */

/**
 * @internal
 */
static void
_cache_free(netsnmp_cache * cache, void *magic)
{
    netsnmp_container *container;

    DEBUGMSGTL(("internal:inetNetToMediaTable:_cache_free", "called\n"));

    if ((NULL == cache) || (NULL == cache->magic)) {
        snmp_log(LOG_ERR,
                 "invalid cache in inetNetToMediaTable_cache_free\n");
        return;
    }

    container = (netsnmp_container *) cache->magic;

    /*
     * call user code
     */
    inetNetToMediaTable_cache_free(container);

    /*
     * free all items. inefficient, but easy.
     */
    CONTAINER_CLEAR(container,
                    (netsnmp_container_obj_func *) _cache_item_free, NULL);
}                               /* _cache_free */

/**
 * @internal
 * initialize the iterator container with functions or wrappers
 */
void
_inetNetToMediaTable_container_init(inetNetToMediaTable_interface_ctx *
                                    if_ctx)
{
    DEBUGMSGTL(("internal:inetNetToMediaTable:_inetNetToMediaTable_container_init", "called\n"));

    /*
     * set up the cache
     */
    if_ctx->cache = netsnmp_cache_create(30,    /* timeout in seconds */
                                         _cache_load, _cache_free,
                                         inetNetToMediaTable_oid,
                                         inetNetToMediaTable_oid_size);

    if (NULL == if_ctx->cache) {
        snmp_log(LOG_ERR,
                 "error creating cache for inetNetToMediaTable\n");
        return;
    }

    if_ctx->cache->flags = NETSNMP_CACHE_DONT_INVALIDATE_ON_SET;

    inetNetToMediaTable_container_init(&if_ctx->container, if_ctx->cache);
    if (NULL == if_ctx->container)
        if_ctx->container =
            netsnmp_container_find("inetNetToMediaTable:table_container");
    if (NULL == if_ctx->container) {
        snmp_log(LOG_ERR, "error creating container in "
                 "inetNetToMediaTable_container_init\n");
        return;
    }
    if_ctx->cache->magic = (void *) if_ctx->container;
}                               /* _inetNetToMediaTable_container_init */