b955f683f4
* netlink_route.h: New file. * rtnl_link.c: Likewise. * Makefile.am (strace_SOURCES): Add them. * defs.h (arp_hardware_types, iffflags): New xlat prototypes. * netlink_route.c: Include "netlink_route.h" and <linux/rtnetlink.h>. (netlink_route_decoder_t): New typedef. (route_decoders): New array. (decode_netlink_route): Use it. Co-authored-by: Fabien Siron <fabien.siron@epita.fr>
85 lines
2.9 KiB
C
85 lines
2.9 KiB
C
/*
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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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#include "netlink.h"
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#include "netlink_route.h"
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#include <linux/rtnetlink.h>
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#include "xlat/nl_route_types.h"
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static void
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decode_family(struct tcb *const tcp, const uint8_t family,
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const kernel_ulong_t addr, const unsigned int len)
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{
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tprints("{family=");
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printxval(addrfams, family, "AF_???");
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if (len > sizeof(family)) {
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tprints(", ");
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printstr_ex(tcp, addr + sizeof(family),
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len - sizeof(family), QUOTE_FORCE_HEX);
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}
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tprints("}");
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}
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typedef DECL_NETLINK_ROUTE_DECODER((*netlink_route_decoder_t));
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static const netlink_route_decoder_t route_decoders[] = {
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[RTM_DELLINK - RTM_BASE] = decode_ifinfomsg,
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[RTM_GETLINK - RTM_BASE] = decode_ifinfomsg,
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[RTM_NEWLINK - RTM_BASE] = decode_ifinfomsg,
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[RTM_SETLINK - RTM_BASE] = decode_ifinfomsg
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};
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bool
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decode_netlink_route(struct tcb *const tcp,
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const struct nlmsghdr *const nlmsghdr,
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const kernel_ulong_t addr,
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const unsigned int len)
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{
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uint8_t family;
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if (nlmsghdr->nlmsg_type == NLMSG_DONE)
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return false;
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if (!umove_or_printaddr(tcp, addr, &family)) {
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const unsigned int index = nlmsghdr->nlmsg_type - RTM_BASE;
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if (index < ARRAY_SIZE(route_decoders)
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&& route_decoders[index]) {
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route_decoders[index](tcp, nlmsghdr, family, addr, len);
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} else {
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decode_family(tcp, family, addr, len);
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}
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}
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return true;
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}
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