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.
120 lines
2.9 KiB
C
120 lines
2.9 KiB
C
/*
|
|
* Copyright (c) 2016 Fabien Siron <fabien.siron@epita.fr>
|
|
* Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com>
|
|
* Copyright (c) 2016-2018 The strace developers.
|
|
* All rights reserved.
|
|
*
|
|
* SPDX-License-Identifier: LGPL-2.1-or-later
|
|
*/
|
|
|
|
#include "defs.h"
|
|
#include "netlink_route.h"
|
|
#include "nlattr.h"
|
|
#include "print_fields.h"
|
|
|
|
#include "netlink.h"
|
|
#include <linux/rtnetlink.h>
|
|
#ifdef HAVE_LINUX_IF_ADDR_H
|
|
# include <linux/if_addr.h>
|
|
#endif
|
|
|
|
#include "xlat/ifaddrflags.h"
|
|
#include "xlat/routing_scopes.h"
|
|
#include "xlat/rtnl_addr_attrs.h"
|
|
|
|
static bool
|
|
decode_ifa_address(struct tcb *const tcp,
|
|
const kernel_ulong_t addr,
|
|
const unsigned int len,
|
|
const void *const opaque_data)
|
|
{
|
|
const struct ifaddrmsg *const ifaddr = opaque_data;
|
|
|
|
decode_inet_addr(tcp, addr, len, ifaddr->ifa_family, NULL);
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
decode_ifa_cacheinfo(struct tcb *const tcp,
|
|
const kernel_ulong_t addr,
|
|
const unsigned int len,
|
|
const void *const opaque_data)
|
|
{
|
|
struct ifa_cacheinfo ci;
|
|
|
|
if (len < sizeof(ci))
|
|
return false;
|
|
else if (!umove_or_printaddr(tcp, addr, &ci)) {
|
|
PRINT_FIELD_U("{", ci, ifa_prefered);
|
|
PRINT_FIELD_U(", ", ci, ifa_valid);
|
|
PRINT_FIELD_U(", ", ci, cstamp);
|
|
PRINT_FIELD_U(", ", ci, tstamp);
|
|
tprintf("}");
|
|
}
|
|
|
|
return true;
|
|
}
|
|
|
|
static bool
|
|
decode_ifa_flags(struct tcb *const tcp,
|
|
const kernel_ulong_t addr,
|
|
const unsigned int len,
|
|
const void *const opaque_data)
|
|
{
|
|
uint32_t ifa_flags;
|
|
|
|
if (len < sizeof(ifa_flags))
|
|
return false;
|
|
else if (!umove_or_printaddr(tcp, addr, &ifa_flags))
|
|
printflags(ifaddrflags, ifa_flags, "IFA_F_???");
|
|
|
|
return true;
|
|
}
|
|
|
|
static const nla_decoder_t ifaddrmsg_nla_decoders[] = {
|
|
[IFA_ADDRESS] = decode_ifa_address,
|
|
[IFA_LOCAL] = decode_ifa_address,
|
|
[IFA_LABEL] = decode_nla_str,
|
|
[IFA_BROADCAST] = decode_ifa_address,
|
|
[IFA_ANYCAST] = decode_ifa_address,
|
|
[IFA_CACHEINFO] = decode_ifa_cacheinfo,
|
|
[IFA_MULTICAST] = decode_ifa_address,
|
|
[IFA_FLAGS] = decode_ifa_flags
|
|
};
|
|
|
|
DECL_NETLINK_ROUTE_DECODER(decode_ifaddrmsg)
|
|
{
|
|
struct ifaddrmsg ifaddr = { .ifa_family = family };
|
|
size_t offset = sizeof(ifaddr.ifa_family);
|
|
bool decode_nla = false;
|
|
|
|
PRINT_FIELD_XVAL("{", ifaddr, ifa_family, addrfams, "AF_???");
|
|
|
|
tprints(", ");
|
|
if (len >= sizeof(ifaddr)) {
|
|
if (!umoven_or_printaddr(tcp, addr + offset,
|
|
sizeof(ifaddr) - offset,
|
|
(char *) &ifaddr + offset)) {
|
|
PRINT_FIELD_U("", ifaddr, ifa_prefixlen);
|
|
PRINT_FIELD_FLAGS(", ", ifaddr, ifa_flags,
|
|
ifaddrflags, "IFA_F_???");
|
|
PRINT_FIELD_XVAL(", ", ifaddr, ifa_scope,
|
|
routing_scopes, NULL);
|
|
PRINT_FIELD_IFINDEX(", ", ifaddr, ifa_index);
|
|
decode_nla = true;
|
|
}
|
|
} else
|
|
tprints("...");
|
|
tprints("}");
|
|
|
|
offset = NLMSG_ALIGN(sizeof(ifaddr));
|
|
if (decode_nla && len > offset) {
|
|
tprints(", ");
|
|
decode_nlattr(tcp, addr + offset, len - offset,
|
|
rtnl_addr_attrs, "IFA_???",
|
|
ifaddrmsg_nla_decoders,
|
|
ARRAY_SIZE(ifaddrmsg_nla_decoders), &ifaddr);
|
|
}
|
|
}
|