Dmitry V. Levin
b93d52fe3d
strace is now provided under the terms of the GNU Lesser General Public License version 2.1 or later, see COPYING for more details. strace test suite is now provided under the terms of the GNU General Public License version 2 or later, see tests/COPYING for more details.
128 lines
3.7 KiB
C
128 lines
3.7 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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* SPDX-License-Identifier: LGPL-2.1-or-later
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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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[RTM_DELADDR - RTM_BASE] = decode_ifaddrmsg,
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[RTM_GETADDR - RTM_BASE] = decode_ifaddrmsg,
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[RTM_GETANYCAST - RTM_BASE] = decode_ifaddrmsg,
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[RTM_GETMULTICAST - RTM_BASE] = decode_ifaddrmsg,
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[RTM_NEWADDR - RTM_BASE] = decode_ifaddrmsg,
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[RTM_DELROUTE - RTM_BASE] = decode_rtmsg,
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[RTM_GETROUTE - RTM_BASE] = decode_rtmsg,
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[RTM_NEWROUTE - RTM_BASE] = decode_rtmsg,
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[RTM_DELRULE - RTM_BASE] = decode_fib_rule_hdr,
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[RTM_GETRULE - RTM_BASE] = decode_fib_rule_hdr,
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[RTM_NEWRULE - RTM_BASE] = decode_fib_rule_hdr,
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[RTM_DELNEIGH - RTM_BASE] = decode_ndmsg,
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[RTM_GETNEIGH - RTM_BASE] = decode_rtm_getneigh,
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[RTM_NEWNEIGH - RTM_BASE] = decode_ndmsg,
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[RTM_GETNEIGHTBL - RTM_BASE] = decode_ndtmsg,
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[RTM_NEWNEIGHTBL - RTM_BASE] = decode_ndtmsg,
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[RTM_SETNEIGHTBL - RTM_BASE] = decode_ndtmsg,
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[RTM_DELQDISC - RTM_BASE] = decode_tcmsg,
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[RTM_GETQDISC - RTM_BASE] = decode_tcmsg,
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[RTM_NEWQDISC - RTM_BASE] = decode_tcmsg,
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[RTM_DELTCLASS - RTM_BASE] = decode_tcmsg,
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[RTM_GETTCLASS - RTM_BASE] = decode_tcmsg,
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[RTM_NEWTCLASS - RTM_BASE] = decode_tcmsg,
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[RTM_DELTFILTER - RTM_BASE] = decode_tcmsg,
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[RTM_GETTFILTER - RTM_BASE] = decode_tcmsg,
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[RTM_NEWTFILTER - RTM_BASE] = decode_tcmsg,
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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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#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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#ifdef HAVE_STRUCT_DCBMSG
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[RTM_GETDCB - RTM_BASE] = decode_dcbmsg,
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[RTM_SETDCB - RTM_BASE] = decode_dcbmsg,
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#endif
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#ifdef HAVE_STRUCT_NETCONFMSG
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[RTM_DELNETCONF - RTM_BASE] = decode_netconfmsg,
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[RTM_GETNETCONF - RTM_BASE] = decode_netconfmsg,
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[RTM_NEWNETCONF - RTM_BASE] = decode_netconfmsg,
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#endif
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#ifdef HAVE_STRUCT_BR_PORT_MSG
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[RTM_DELMDB - RTM_BASE] = decode_br_port_msg,
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[RTM_GETMDB - RTM_BASE] = decode_br_port_msg,
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[RTM_NEWMDB - RTM_BASE] = decode_br_port_msg,
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#endif
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[RTM_DELNSID - RTM_BASE] = decode_rtgenmsg,
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[RTM_GETNSID - RTM_BASE] = decode_rtgenmsg,
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[RTM_NEWNSID - RTM_BASE] = decode_rtgenmsg
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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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