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netlink: add a basic rtnetlink parser of netconf messages

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* rtnl_netconf.c: New file.
* Makefile.am (strace_SOURCES): Add it.
* netlink_route.h (decode_netconfmsg): New prototype.
* configure.ac (AC_CHECK_TYPES): Check for struct netconfmsg
in <linux/netconf.h>.
* netlink_route.c (route_decoders): Add RTM_GETNETCONF
and RTM_NEWNETCONF.

Co-authored-by: Fabien Siron <fabien.siron@epita.fr>
This commit is contained in:
JingPiao Chen 2017-08-13 10:27:28 +08:00 committed by Dmitry V. Levin
parent 9120212f66
commit b51ed22cee
5 changed files with 57 additions and 1 deletions
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1
Makefile.am
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@ -253,6 +253,7 @@ strace_SOURCES = \
rtnl_link.c \
rtnl_neigh.c \
rtnl_neightbl.c \
rtnl_netconf.c \
rtnl_route.c \
rtnl_rule.c \
rtnl_tc.c \

1
configure.ac
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@ -445,6 +445,7 @@ AC_CHECK_HEADERS([linux/bpf.h], [
AC_CHECK_TYPES([struct dcbmsg],,, [#include <linux/dcbnl.h>])
AC_CHECK_TYPES([struct ifaddrlblmsg],,, [#include <linux/if_addrlabel.h>])
AC_CHECK_TYPES([struct netconfmsg],,, [#include <linux/netconf.h>])
AC_CHECK_TYPES([struct statfs], [
AC_CHECK_MEMBERS([struct statfs.f_frsize],,, [#include <linux/types.h>

8
netlink_route.c
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@ -101,7 +101,13 @@ static const netlink_route_decoder_t route_decoders[] = {
#ifdef HAVE_STRUCT_DCBMSG
[RTM_GETDCB - RTM_BASE] = decode_dcbmsg,
[RTM_SETDCB - RTM_BASE] = decode_dcbmsg
[RTM_SETDCB - RTM_BASE] = decode_dcbmsg,
#endif
#ifdef HAVE_STRUCT_NETCONFMSG
[RTM_DELNETCONF - RTM_BASE] = decode_netconfmsg,
[RTM_GETNETCONF - RTM_BASE] = decode_netconfmsg,
[RTM_NEWNETCONF - RTM_BASE] = decode_netconfmsg
#endif
};

1
netlink_route.h
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@ -46,6 +46,7 @@ extern DECL_NETLINK_ROUTE_DECODER(decode_ifaddrmsg);
extern DECL_NETLINK_ROUTE_DECODER(decode_ifinfomsg);
extern DECL_NETLINK_ROUTE_DECODER(decode_ndmsg);
extern DECL_NETLINK_ROUTE_DECODER(decode_ndtmsg);
extern DECL_NETLINK_ROUTE_DECODER(decode_netconfmsg);
extern DECL_NETLINK_ROUTE_DECODER(decode_rtm_getneigh);
extern DECL_NETLINK_ROUTE_DECODER(decode_rtmsg);
extern DECL_NETLINK_ROUTE_DECODER(decode_tcamsg);

47
rtnl_netconf.c Normal file
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@ -0,0 +1,47 @@
/*
* 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"
#ifdef HAVE_STRUCT_NETCONFMSG
# include "netlink_route.h"
# include "print_fields.h"
# include <linux/netconf.h>
DECL_NETLINK_ROUTE_DECODER(decode_netconfmsg)
{
struct netconfmsg ncm = { .ncm_family = family };
PRINT_FIELD_XVAL("{", ncm, ncm_family, addrfams, "AF_???");
tprints("}");
}
#endif