37d5c1b0d9
Gregory Nutt has submitted the SGA and we can migrate the licenses to Apache. Signed-off-by: Alin Jerpelea <alin.jerpelea@sony.com>
477 lines
13 KiB
C
477 lines
13 KiB
C
/****************************************************************************
|
|
* net/route/net_del_fileroute.c
|
|
*
|
|
* Licensed to the Apache Software Foundation (ASF) under one or more
|
|
* contributor license agreements. See the NOTICE file distributed with
|
|
* this work for additional information regarding copyright ownership. The
|
|
* ASF licenses this file to you under the Apache License, Version 2.0 (the
|
|
* "License"); you may not use this file except in compliance with the
|
|
* License. You may obtain a copy of the License at
|
|
*
|
|
* http://www.apache.org/licenses/LICENSE-2.0
|
|
*
|
|
* Unless required by applicable law or agreed to in writing, software
|
|
* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
|
|
* License for the specific language governing permissions and limitations
|
|
* under the License.
|
|
*
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Included Files
|
|
****************************************************************************/
|
|
|
|
#include <nuttx/config.h>
|
|
|
|
#include <stdint.h>
|
|
#include <unistd.h>
|
|
#include <fcntl.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
#include <debug.h>
|
|
|
|
#include <arpa/inet.h>
|
|
|
|
#include <nuttx/fs/fs.h>
|
|
#include <nuttx/net/ip.h>
|
|
|
|
#include "route/fileroute.h"
|
|
#include "route/cacheroute.h"
|
|
#include "route/route.h"
|
|
|
|
#if defined(CONFIG_ROUTE_IPv4_FILEROUTE) || defined(CONFIG_ROUTE_IPv6_FILEROUTE)
|
|
|
|
/****************************************************************************
|
|
* Private Types
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_ROUTE_IPv4_FILEROUTE
|
|
struct route_match_ipv4_s
|
|
{
|
|
in_addr_t target; /* The target IP address to match */
|
|
in_addr_t netmask; /* The network mask to match */
|
|
unsigned int index; /* Index of match */
|
|
};
|
|
#endif
|
|
|
|
#ifdef CONFIG_ROUTE_IPv6_FILEROUTE
|
|
struct route_match_ipv6_s
|
|
{
|
|
net_ipv6addr_t target; /* The target IP address to match */
|
|
net_ipv6addr_t netmask; /* The network mask to match */
|
|
unsigned int index; /* Index of match */
|
|
};
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Private Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: net_match_ipv4
|
|
*
|
|
* Description:
|
|
* Return 1 if the route is available
|
|
*
|
|
* Input Parameters:
|
|
* route - The next route to examine
|
|
* arg - The match values (cast to void*)
|
|
*
|
|
* Returned Value:
|
|
* 0 if the entry is not a match; 1 if the entry matched and was cleared.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_ROUTE_IPv4_FILEROUTE
|
|
static int net_match_ipv4(FAR struct net_route_ipv4_s *route, FAR void *arg)
|
|
{
|
|
FAR struct route_match_ipv4_s *match =
|
|
(FAR struct route_match_ipv4_s *)arg;
|
|
|
|
/* To match, the masked target address must be the same, and the masks
|
|
* must be the same.
|
|
*/
|
|
|
|
net_ipv4_dumproute("Comparing", route);
|
|
ninfo("With:\n");
|
|
ninfo(" target=%08lx netmask=%08lx\n",
|
|
htonl(match->target), htonl(match->netmask));
|
|
|
|
if (net_ipv4addr_maskcmp(route->target, match->target, match->netmask) &&
|
|
net_ipv4addr_cmp(route->netmask, match->netmask))
|
|
{
|
|
/* They match.. a non-zero value to terminate the traversal. The last
|
|
* value of index is the index to the matching entry.
|
|
*/
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* Next time we are here, this will be the routing table index */
|
|
|
|
match->index++;
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_ROUTE_IPv6_FILEROUTE
|
|
static int net_match_ipv6(FAR struct net_route_ipv6_s *route, FAR void *arg)
|
|
{
|
|
FAR struct route_match_ipv6_s *match =
|
|
(FAR struct route_match_ipv6_s *)arg;
|
|
|
|
/* To match, the masked target address must be the same, and the masks
|
|
* must be the same.
|
|
*/
|
|
|
|
net_ipv6_dumproute("Comparing", route);
|
|
ninfo("With:\n");
|
|
ninfo(" target: %04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x\n",
|
|
htons(match->target[0]), htons(match->target[1]),
|
|
htons(match->target[2]), htons(match->target[3]),
|
|
htons(match->target[4]), htons(match->target[5]),
|
|
htons(match->target[6]), htons(match->target[7]));
|
|
ninfo(" netmask: %04x:%04x:%04x:%04x:%04x:%04x:%04x:%04x\n",
|
|
htons(match->netmask[0]), htons(match->netmask[1]),
|
|
htons(match->netmask[2]), htons(match->netmask[3]),
|
|
htons(match->netmask[4]), htons(match->netmask[5]),
|
|
htons(match->netmask[6]), htons(match->netmask[7]));
|
|
|
|
if (net_ipv6addr_maskcmp(route->target, match->target, match->netmask) &&
|
|
net_ipv6addr_cmp(route->netmask, match->netmask))
|
|
{
|
|
/* They match.. a non-zero value to terminate the traversal. The last
|
|
* value of index is the index to the matching entry.
|
|
*/
|
|
|
|
return 1;
|
|
}
|
|
|
|
/* Next time we are here, this will be the routing table index */
|
|
|
|
match->index++;
|
|
return 0;
|
|
}
|
|
#endif
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: net_delroute_ipv4 and net_delroute_ipv6
|
|
*
|
|
* Description:
|
|
* Remove an existing route from the routing table
|
|
*
|
|
* Input Parameters:
|
|
*
|
|
* Returned Value:
|
|
* OK on success; Negated errno on failure.
|
|
*
|
|
****************************************************************************/
|
|
|
|
#ifdef CONFIG_ROUTE_IPv4_FILEROUTE
|
|
int net_delroute_ipv4(in_addr_t target, in_addr_t netmask)
|
|
{
|
|
struct route_match_ipv4_s match;
|
|
struct net_route_ipv4_s route;
|
|
struct file fshandle;
|
|
off_t filesize;
|
|
ssize_t nwritten;
|
|
ssize_t nread;
|
|
off_t pos;
|
|
int nentries;
|
|
int index;
|
|
int ret;
|
|
|
|
/* We must lock out other accesses to the routing table while we remove
|
|
* entry
|
|
*/
|
|
|
|
ret = net_lockroute_ipv4();
|
|
if (ret < 0)
|
|
{
|
|
nerr("ERROR: net_lockroute_ipv4 faled: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
/* Get the size of the routing table (in entries) */
|
|
|
|
nentries = net_routesize_ipv4();
|
|
if (nentries < 0)
|
|
{
|
|
ret = nentries;
|
|
goto errout_with_lock;
|
|
}
|
|
else if (nentries == 0)
|
|
{
|
|
ret = -ENOENT;
|
|
goto errout_with_lock;
|
|
}
|
|
|
|
/* Set up the comparison structure */
|
|
|
|
net_ipv4addr_copy(match.target, target);
|
|
net_ipv4addr_copy(match.netmask, netmask);
|
|
match.index = 0;
|
|
|
|
/* Then find the index into the routing table where the match can be
|
|
* found
|
|
*/
|
|
|
|
ret = net_foreachroute_ipv4(net_match_ipv4, &match);
|
|
if (ret < 0)
|
|
{
|
|
/* And error occurred */
|
|
|
|
goto errout_with_lock;
|
|
}
|
|
else if (ret == 0)
|
|
{
|
|
/* No match found */
|
|
|
|
ret = -ENOENT;
|
|
goto errout_with_lock;
|
|
}
|
|
|
|
/* Open the routing table for read/write access */
|
|
|
|
ret = net_openroute_ipv4(O_RDWR, &fshandle);
|
|
if (ret < 0)
|
|
{
|
|
nerr("ERROR: Could not open IPv4 routing table: %d\n", ret);
|
|
goto errout_with_lock;
|
|
}
|
|
|
|
#ifdef CONFIG_ROUTE_IPv4_CACHEROUTE
|
|
/* We are committed to modifying the routing table. Flush the in-memory
|
|
* routing table cache.
|
|
*/
|
|
|
|
net_flushcache_ipv4();
|
|
#endif
|
|
|
|
/* Loop, copying each entry, to the previous entry thus removing the entry
|
|
* to be deleted.
|
|
*/
|
|
|
|
for (index = match.index + 1; index < nentries; index++)
|
|
{
|
|
/* Seek to the current entry to be moved */
|
|
|
|
pos = net_seekroute_ipv4(&fshandle, index);
|
|
if (pos < 0)
|
|
{
|
|
nerr("ERROR: net_readroute_ipv4 failed: %ld\n", (long)pos);
|
|
ret = (int)pos;
|
|
goto errout_with_fshandle;
|
|
}
|
|
|
|
/* Read the routing table entry at this position */
|
|
|
|
nread = net_readroute_ipv4(&fshandle, &route);
|
|
if (nread < 0)
|
|
{
|
|
nerr("ERROR: net_readroute_ipv4 failed: %ld\n", (long)nread);
|
|
ret = (int)nread;
|
|
goto errout_with_fshandle;
|
|
}
|
|
else if (nread == 0)
|
|
{
|
|
nerr("ERROR: Unexpected end of file\n");
|
|
ret = -EINVAL;
|
|
goto errout_with_fshandle;
|
|
}
|
|
|
|
/* Seek to the previous entry to be replaced */
|
|
|
|
pos = net_seekroute_ipv4(&fshandle, index - 1);
|
|
if (pos < 0)
|
|
{
|
|
nerr("ERROR: net_readroute_ipv4 failed: %ld\n", (long)pos);
|
|
ret = (int)pos;
|
|
goto errout_with_fshandle;
|
|
}
|
|
|
|
/* Now write the record to its new location */
|
|
|
|
nwritten = net_writeroute_ipv4(&fshandle, &route);
|
|
if (nwritten < 0)
|
|
{
|
|
nerr("ERROR: net_readroute_ipv4 failed: %ld\n", (long)nwritten);
|
|
ret = (int)nwritten;
|
|
goto errout_with_fshandle;
|
|
}
|
|
}
|
|
|
|
/* Now truncate the one duplicate entry at the end of the file. This may
|
|
* result in a zero length file.
|
|
*/
|
|
|
|
filesize = (nentries - 1) * sizeof(struct net_route_ipv4_s);
|
|
ret = file_truncate(&fshandle, filesize);
|
|
|
|
errout_with_fshandle:
|
|
net_closeroute_ipv4(&fshandle);
|
|
|
|
errout_with_lock:
|
|
net_unlockroute_ipv4();
|
|
return ret;
|
|
}
|
|
#endif
|
|
|
|
#ifdef CONFIG_ROUTE_IPv6_FILEROUTE
|
|
int net_delroute_ipv6(net_ipv6addr_t target, net_ipv6addr_t netmask)
|
|
{
|
|
struct route_match_ipv6_s match;
|
|
struct net_route_ipv6_s route;
|
|
struct file fshandle;
|
|
off_t filesize;
|
|
ssize_t nwritten;
|
|
ssize_t nread;
|
|
off_t pos;
|
|
int nentries;
|
|
int index;
|
|
int ret;
|
|
|
|
/* We must lock out other accesses to the routing table while we remove
|
|
* entry
|
|
*/
|
|
|
|
ret = net_lockroute_ipv6();
|
|
if (ret < 0)
|
|
{
|
|
nerr("ERROR: net_lockroute_ipv6 failed: %d\n", ret);
|
|
return ret;
|
|
}
|
|
|
|
/* Get the size of the routing table (in entries) */
|
|
|
|
nentries = net_routesize_ipv6();
|
|
if (nentries < 0)
|
|
{
|
|
ret = nentries;
|
|
goto errout_with_lock;
|
|
}
|
|
else if (nentries == 0)
|
|
{
|
|
ret = -ENOENT;
|
|
goto errout_with_lock;
|
|
}
|
|
|
|
/* Set up the comparison structure */
|
|
|
|
net_ipv6addr_copy(match.target, target);
|
|
net_ipv6addr_copy(match.netmask, netmask);
|
|
match.index = 0;
|
|
|
|
/* Then find the index into the routing table where the match can be
|
|
* found
|
|
*/
|
|
|
|
ret = net_foreachroute_ipv6(net_match_ipv6, &match);
|
|
if (ret < 0)
|
|
{
|
|
/* And error occurred */
|
|
|
|
ret = ret;
|
|
goto errout_with_lock;
|
|
}
|
|
else if (ret == 0)
|
|
{
|
|
/* No match found */
|
|
|
|
ret = -ENOENT;
|
|
goto errout_with_lock;
|
|
}
|
|
|
|
/* Open the routing table for read/write access */
|
|
|
|
ret = net_openroute_ipv6(O_RDWR, &fshandle);
|
|
if (ret < 0)
|
|
{
|
|
nerr("ERROR: Could not open IPv6 routing table: %d\n", ret);
|
|
goto errout_with_lock;
|
|
}
|
|
|
|
#ifdef CONFIG_ROUTE_IPv6_CACHEROUTE
|
|
/* We are committed to modifying the routing table. Flush the in-memory
|
|
* routing table cache.
|
|
*/
|
|
|
|
net_flushcache_ipv6();
|
|
#endif
|
|
|
|
/* Loop, copying each entry, to the previous entry thus removing the entry
|
|
* to be deleted.
|
|
*/
|
|
|
|
for (index = match.index + 1; index < nentries; index++)
|
|
{
|
|
/* Seek to the current entry to be moved */
|
|
|
|
pos = net_seekroute_ipv6(&fshandle, index);
|
|
if (pos < 0)
|
|
{
|
|
nerr("ERROR: net_readroute_ipv6 failed: %ld\n", (long)pos);
|
|
ret = (int)pos;
|
|
goto errout_with_fshandle;
|
|
}
|
|
|
|
/* Read the routing table entry at this position */
|
|
|
|
nread = net_readroute_ipv6(&fshandle, &route);
|
|
if (nread < 0)
|
|
{
|
|
nerr("ERROR: net_readroute_ipv6 failed: %ld\n", (long)nread);
|
|
ret = (int)nread;
|
|
goto errout_with_fshandle;
|
|
}
|
|
else if (nread == 0)
|
|
{
|
|
nerr("ERROR: Unexpected end of file\n");
|
|
ret = -EINVAL;
|
|
goto errout_with_fshandle;
|
|
}
|
|
|
|
/* Seek to the previous entry to be replaced */
|
|
|
|
pos = net_seekroute_ipv6(&fshandle, index - 1);
|
|
if (pos < 0)
|
|
{
|
|
nerr("ERROR: net_readroute_ipv6 failed: %ld\n", (long)pos);
|
|
ret = (int)pos;
|
|
goto errout_with_fshandle;
|
|
}
|
|
|
|
/* Now write the record to its new location */
|
|
|
|
nwritten = net_writeroute_ipv6(&fshandle, &route);
|
|
if (nwritten < 0)
|
|
{
|
|
nerr("ERROR: net_readroute_ipv6 failed: %ld\n", (long)nwritten);
|
|
ret = (int)nwritten;
|
|
goto errout_with_fshandle;
|
|
}
|
|
}
|
|
|
|
/* Now truncate the one duplicate entry at the end of the file. This may
|
|
* result in a zero length file.
|
|
*/
|
|
|
|
filesize = (nentries - 1) * sizeof(struct net_route_ipv6_s);
|
|
ret = file_truncate(&fshandle, filesize);
|
|
|
|
errout_with_fshandle:
|
|
net_closeroute_ipv6(&fshandle);
|
|
|
|
errout_with_lock:
|
|
net_unlockroute_ipv6();
|
|
return ret;
|
|
}
|
|
#endif
|
|
|
|
#endif /* CONFIG_ROUTE_IPv4_FILEROUTE || CONFIG_ROUTE_IPv6_FILEROUTE */
|