strace/rtnl_route.c
JingPiao Chen 0ca787b5ba netlink: add a basic rtnetlink parser of route messages
* defs.h (routing_scopes): New xlat prototype.
* rtnl_route.c: New file.
* Makefile.am (strace_SOURCES): Add it.
* netlink_route.h (decode_rtmsg): New prototype.
* netlink_route.c (route_decoders): Add RTM_DELROUTE, RTM_GETROUTE,
and RTM_NEWROUTE.
* xlat/ip_type_of_services.in: New file.
* xlat/routing_flags.in: Likewise.
* xlat/routing_protocols.in: Likewise.
* xlat/routing_table_ids.in: Likewise.
* xlat/routing_types.in: Likewise.

Co-authored-by: Fabien Siron <fabien.siron@epita.fr>
2017-08-14 01:06:38 +00:00

75 lines
2.8 KiB
C

/*
* Copyright (c) 2016 Fabien Siron <fabien.siron@epita.fr>
* Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com>
* Copyright (c) 2016-2017 The strace developers.
* All rights reserved.
*
* 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. The name of the author may not be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
*/
#include "defs.h"
#include "netlink_route.h"
#include "print_fields.h"
#include <linux/ip.h>
#include "netlink.h"
#include <linux/rtnetlink.h>
#include "xlat/ip_type_of_services.h"
#include "xlat/routing_flags.h"
#include "xlat/routing_protocols.h"
#include "xlat/routing_table_ids.h"
#include "xlat/routing_types.h"
DECL_NETLINK_ROUTE_DECODER(decode_rtmsg)
{
struct rtmsg rtmsg = { .rtm_family = family };
const size_t offset = sizeof(rtmsg.rtm_family);
PRINT_FIELD_XVAL("{", rtmsg, rtm_family, addrfams, "AF_???");
tprints(", ");
if (len >= sizeof(rtmsg)) {
if (!umoven_or_printaddr(tcp, addr + offset,
sizeof(rtmsg) - offset,
(void *) &rtmsg + offset)) {
PRINT_FIELD_U("", rtmsg, rtm_dst_len);
PRINT_FIELD_U(", ", rtmsg, rtm_src_len);
PRINT_FIELD_FLAGS(", ", rtmsg, rtm_tos,
ip_type_of_services, "IPTOS_TOS_???");
PRINT_FIELD_XVAL(", ", rtmsg, rtm_table,
routing_table_ids, NULL);
PRINT_FIELD_XVAL(", ", rtmsg, rtm_protocol,
routing_protocols, "RTPROT_???");
PRINT_FIELD_XVAL(", ", rtmsg, rtm_scope,
routing_scopes, NULL);
PRINT_FIELD_XVAL(", ", rtmsg, rtm_type,
routing_types, "RTN_???");
PRINT_FIELD_FLAGS(", ", rtmsg, rtm_flags,
routing_flags, "RTM_F_???");
}
} else
tprints("...");
tprints("}");
}