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- /****************************************************************************
- * net/route/net_foreach_fileroute.c
- *
- * Copyright (C) 2017 Gregory Nutt. All rights reserved.
- * Author: Gregory Nutt <gnutt@nuttx.org>
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions
- * are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in
- * the documentation and/or other materials provided with the
- * distribution.
- * 3. Neither the name NuttX nor the names of its contributors may be
- * used to endorse or promote products derived from this software
- * without specific prior written permission.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
- * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
- * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS
- * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
- * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT,
- * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
- * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS
- * OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
- * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
- * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN
- * ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- *
- ****************************************************************************/
- /****************************************************************************
- * Included Files
- ****************************************************************************/
- #include <nuttx/config.h>
- #include <stdint.h>
- #include <fcntl.h>
- #include <errno.h>
- #include <debug.h>
- #include <nuttx/fs/fs.h>
- #include "route/fileroute.h"
- #include "route/route.h"
- #if defined(CONFIG_ROUTE_IPv4_FILEROUTE) || defined(CONFIG_ROUTE_IPv6_FILEROUTE)
- /****************************************************************************
- * Public Functions
- ****************************************************************************/
- /****************************************************************************
- * Name: net_foreachroute_ipv4 and net_foreachroute_ipv6
- *
- * Description:
- * Traverse the routing table
- *
- * Input Parameters:
- * handler - Will be called for each route in the routing table.
- * arg - An arbitrary value that will be passed tot he handler.
- *
- * Returned Value:
- * Zero (OK) returned if the entire table was search. A negated errno
- * value will be returned in the event of a failure. Handlers may also
- * terminate the search early with any non-zero, non-negative value.
- *
- ****************************************************************************/
- #ifdef CONFIG_ROUTE_IPv4_FILEROUTE
- int net_foreachroute_ipv4(route_handler_ipv4_t handler, FAR void *arg)
- {
- struct net_route_ipv4_s route;
- struct file fshandle;
- ssize_t nread;
- int ret = 0;
- /* Open the IPv4 routing table for read-only access */
- ret = net_openroute_ipv4(O_RDONLY, &fshandle);
- if (ret < 0)
- {
- /* Special case: the routing table has not yet been created. This is
- * not an error. We will just want to return successful completion of
- * the traversal.
- */
- if (ret == -ENOENT)
- {
- /* The routing table does not exit.. return successful completion */
- ninfo("The IPv4 routing table file does not exist\n");
- return OK;
- }
- /* Some other error occurred. */
- nerr("ERROR: Could not open IPv4 routing table: %d\n", ret);
- return ret;
- }
- /* Read each entry from the routing table */
- for (; ; )
- {
- nread = net_readroute_ipv4(&fshandle, &route);
- if (nread < 0)
- {
- /* File read error */
- nerr("ERROR: net_readroute_ipv4() failed: %ld\n", (long)nread);
- ret = (int)nread;
- break;
- }
- else if (nread == 0)
- {
- /* End of file */
- ret = OK;
- break;
- }
- /* Call the handler. */
- ret = handler(&route, arg);
- if (ret != OK)
- {
- /* Terminate early if the handler returns any non-zero value. */
- break;
- }
- }
- net_closeroute_ipv4(&fshandle);
- return ret;
- }
- #endif
- #ifdef CONFIG_ROUTE_IPv6_FILEROUTE
- int net_foreachroute_ipv6(route_handler_ipv6_t handler, FAR void *arg)
- {
- struct net_route_ipv6_s route;
- struct file fshandle;
- ssize_t nread;
- int ret = 0;
- /* Open the IPv6 routing table for read-only access */
- ret = net_openroute_ipv6(O_RDONLY, &fshandle);
- if (ret < 0)
- {
- /* Special case: the routing table has not yet been created. This is
- * not an error. We will just want to return successful completion of
- * the traversal.
- */
- if (ret == -ENOENT)
- {
- /* The routing table does not exit.. return successful completion */
- ninfo("The IPv6 routing table file does not exist\n");
- return OK;
- }
- /* Some other error occurred. */
- nerr("ERROR: Could not open IPv6 routing table: %d\n", ret);
- return ret;
- }
- /* Read each entry from the routing table */
- for (; ; )
- {
- nread = net_readroute_ipv6(&fshandle, &route);
- if (nread < 0)
- {
- /* File read error */
- nerr("ERROR: net_readroute_ipv6() failed: %ld\n", (long)nread);
- ret = (int)nread;
- break;
- }
- else if (nread == 0)
- {
- /* End of file */
- ret = OK;
- break;
- }
- /* Call the handler. */
- ret = handler(&route, arg);
- if (ret != OK)
- {
- /* Terminate early if the handler returns any non-zero value. */
- break;
- }
- }
- net_closeroute_ipv6(&fshandle);
- return ret;
- }
- #endif
- #endif /* CONFIG_ROUTE_IPv4_FILEROUTE || CONFIG_ROUTE_IPv6_FILEROUTE */
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