netlink: add a basic rtnetlink parser of addrlabel messages
* rtnl_addrlabel.c: New file. * Makefile.am (strace_SOURCES): Add it. * netlink_route.h (decode_ifaddrlblmsg): New prototype. * configure.ac (AC_CHECK_TYPES): Check for struct ifaddrlblmsg in <linux/if_addrlabel.h>. * netlink_route.c (route_decoders): Add RTM_DELADDRLABEL, RTM_GETADDRLABEL, and RTM_NEWADDRLABEL. Co-authored-by: Fabien Siron <fabien.siron@epita.fr>
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@ -248,6 +248,7 @@ strace_SOURCES = \
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rt_sigreturn.c \
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rtc.c \
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rtnl_addr.c \
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rtnl_addrlabel.c \
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rtnl_link.c \
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rtnl_neigh.c \
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rtnl_neightbl.c \
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@ -442,6 +442,8 @@ AC_CHECK_HEADERS([linux/bpf.h], [
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st_CHECK_UNION_BPF_ATTR([prog_flags])
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])
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AC_CHECK_TYPES([struct ifaddrlblmsg],,, [#include <linux/if_addrlabel.h>])
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AC_CHECK_TYPES([struct statfs], [
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AC_CHECK_MEMBERS([struct statfs.f_frsize],,, [#include <linux/types.h>
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#include <asm/statfs.h>])
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@ -91,7 +91,13 @@ static const netlink_route_decoder_t route_decoders[] = {
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[RTM_DELACTION - RTM_BASE] = decode_tcamsg,
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[RTM_GETACTION - RTM_BASE] = decode_tcamsg,
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[RTM_NEWACTION - RTM_BASE] = decode_tcamsg
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[RTM_NEWACTION - RTM_BASE] = decode_tcamsg,
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#ifdef HAVE_STRUCT_IFADDRLBLMSG
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[RTM_DELADDRLABEL - RTM_BASE] = decode_ifaddrlblmsg,
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[RTM_GETADDRLABEL - RTM_BASE] = decode_ifaddrlblmsg,
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[RTM_NEWADDRLABEL - RTM_BASE] = decode_ifaddrlblmsg
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#endif
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};
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bool
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@ -40,6 +40,7 @@ route_decode_name(struct tcb *tcp, \
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/* End of DECL_NETLINK_ROUTE_DECODER definition. */
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extern DECL_NETLINK_ROUTE_DECODER(decode_fib_rule_hdr);
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extern DECL_NETLINK_ROUTE_DECODER(decode_ifaddrlblmsg);
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extern DECL_NETLINK_ROUTE_DECODER(decode_ifaddrmsg);
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extern DECL_NETLINK_ROUTE_DECODER(decode_ifinfomsg);
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extern DECL_NETLINK_ROUTE_DECODER(decode_ndmsg);
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61
rtnl_addrlabel.c
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61
rtnl_addrlabel.c
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@ -0,0 +1,61 @@
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/*
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* Copyright (c) 2016 Fabien Siron <fabien.siron@epita.fr>
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* Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com>
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* Copyright (c) 2016-2017 The strace developers.
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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#include "defs.h"
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#ifdef HAVE_STRUCT_IFADDRLBLMSG
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# include "netlink_route.h"
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# include "print_fields.h"
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# include <linux/if_addrlabel.h>
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DECL_NETLINK_ROUTE_DECODER(decode_ifaddrlblmsg)
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{
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struct ifaddrlblmsg ifal = { .ifal_family = family };
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const size_t offset = sizeof(ifal.ifal_family);
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PRINT_FIELD_XVAL("{", ifal, ifal_family, addrfams, "AF_???");
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tprints(", ");
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if (len >= sizeof(ifal)) {
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if (!umoven_or_printaddr(tcp, addr + offset,
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sizeof(ifal) - offset,
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(void *) &ifal + offset)) {
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PRINT_FIELD_U("", ifal, ifal_prefixlen);
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PRINT_FIELD_U(", ", ifal, ifal_flags);
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PRINT_FIELD_IFINDEX(", ", ifal, ifal_index);
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PRINT_FIELD_U(", ", ifal, ifal_seq);
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}
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} else
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tprints("...");
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tprints("}");
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}
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#endif
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