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Move family-specific NETLINK_SOCK_DIAG parsers to separate files

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Split netlink_sock_diag.c that grew too big.

* defs.h (tcp_states, tcp_state_flags): New xlat prototypes.
* netlink_sock_diag.h: New file.
* netlink_inet_diag.c: Likewise.
* netlink_netlink_diag.c: Likewise.
* netlink_packet_diag.c: Likewise.
* netlink_smc_diag.c: Likewise.
* netlink_unix_diag.c: Likewise.
* Makefile.am (strace_SOURCES): Add them.
* netlink_sock_diag.c: Move family-specific parsers and associated
header includes to separate files.
* nlattr.h (DECL_NLA(meminfo)): New prototype.
* nlattr.c: Include <linux/sock_diag.h>.
(print_meminfo, decode_nla_meminfo): New functions from
netlink_sock_diag.c.
This commit is contained in:
Дмитрий Левин 2017-07-19 10:07:34 +00:00
parent c56a3c361c
commit bf24770d91
11 changed files with 1347 additions and 1158 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

6
Makefile.am
View File

@ -183,8 +183,14 @@ strace_SOURCES = \
net.c \
netlink.c \
netlink.h \
netlink_sock_diag.h \
netlink_inet_diag.c \
netlink_netlink_diag.c \
netlink_packet_diag.c \
netlink_selinux.c \
netlink_smc_diag.c \
netlink_sock_diag.c \
netlink_unix_diag.c \
nlattr.c \
nlattr.h \
nsfs.c \

2
defs.h
View File

@ -302,6 +302,8 @@ extern const struct xlat setns_types[];
extern const struct xlat sg_io_info[];
extern const struct xlat socketlayers[];
extern const struct xlat socktypes[];
extern const struct xlat tcp_state_flags[];
extern const struct xlat tcp_states[];
extern const struct xlat whence_codes[];
/* Format of syscall return values */

467
netlink_inet_diag.c Normal file
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@ -0,0 +1,467 @@
/*
* Copyright (c) 2016 Fabien Siron <fabien.siron@epita.fr>
* Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com>
* Copyright (c) 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"
#include "netlink.h"
#include "netlink_sock_diag.h"
#include "nlattr.h"
#include "print_fields.h"
#include <arpa/inet.h>
#include <linux/sock_diag.h>
#include <linux/inet_diag.h>
#include "xlat/inet_diag_attrs.h"
#include "xlat/inet_diag_bytecodes.h"
#include "xlat/inet_diag_extended_flags.h"
#include "xlat/inet_diag_req_attrs.h"
#include "xlat/tcp_states.h"
#include "xlat/tcp_state_flags.h"
void
print_inet_diag_sockid(const struct inet_diag_sockid *id, const uint8_t family)
{
PRINT_FIELD_NET_PORT("{", *id, idiag_sport);
PRINT_FIELD_NET_PORT(", ", *id, idiag_dport);
PRINT_FIELD_INET_ADDR(", ", *id, idiag_src, family);
PRINT_FIELD_INET_ADDR(", ", *id, idiag_dst, family);
PRINT_FIELD_IFINDEX(", ", *id, idiag_if);
PRINT_FIELD_COOKIE(", ", *id, idiag_cookie);
tprints("}");
}
static void
decode_inet_addr(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const int family)
{
union {
struct in_addr a4;
struct in6_addr a6;
} addrbuf;
size_t size = 0;
switch (family) {
case AF_INET:
size = sizeof(addrbuf.a4);
break;
case AF_INET6:
size = sizeof(addrbuf.a6);
break;
}
if (!size || len < size) {
tprints("addr=");
printstr_ex(tcp, addr, len, QUOTE_FORCE_HEX);
return;
}
if (umoven(tcp, addr, size, &addrbuf) < 0) {
tprints("addr=");
printaddr(addr);
return;
}
print_inet_addr(family, &addrbuf, size, "addr");
}
static void
decode_inet_diag_hostcond(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len)
{
struct inet_diag_hostcond cond;
if (len < sizeof(cond)) {
printstr_ex(tcp, addr, len, QUOTE_FORCE_HEX);
return;
}
if (umove_or_printaddr(tcp, addr, &cond))
return;
PRINT_FIELD_XVAL("{", cond, family, addrfams, "AF_???");
PRINT_FIELD_U(", ", cond, prefix_len);
PRINT_FIELD_U(", ", cond, port);
if (len > sizeof(cond)) {
tprints(", ");
decode_inet_addr(tcp, addr + sizeof(cond),
len - sizeof(cond), cond.family);
}
tprints("}");
}
static void
print_inet_diag_bc_op(const struct inet_diag_bc_op *const op)
{
PRINT_FIELD_XVAL("{", *op, code, inet_diag_bytecodes,
"INET_DIAG_BC_???");
PRINT_FIELD_U(", ", *op, yes);
PRINT_FIELD_U(", ", *op, no);
tprints("}");
}
static void
decode_inet_diag_markcond(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len)
{
struct inet_diag_markcond markcond;
if (len < sizeof(markcond))
printstr_ex(tcp, addr, len, QUOTE_FORCE_HEX);
else if (!umove_or_printaddr(tcp, addr, &markcond)) {
PRINT_FIELD_U("{", markcond, mark);
PRINT_FIELD_U(", ", markcond, mask);
tprints("}");
}
}
static void
decode_bytecode_data(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const unsigned char code)
{
switch (code) {
case INET_DIAG_BC_S_COND:
case INET_DIAG_BC_D_COND:
decode_inet_diag_hostcond(tcp, addr, len);
break;
case INET_DIAG_BC_DEV_COND: {
uint32_t ifindex;
if (len < sizeof(ifindex))
printstr_ex(tcp, addr, len, QUOTE_FORCE_HEX);
else if (!umove_or_printaddr(tcp, addr, &ifindex))
print_ifindex(ifindex);
break;
}
case INET_DIAG_BC_S_GE:
case INET_DIAG_BC_S_LE:
case INET_DIAG_BC_D_GE:
case INET_DIAG_BC_D_LE: {
struct inet_diag_bc_op op;
if (len < sizeof(op))
printstr_ex(tcp, addr, len, QUOTE_FORCE_HEX);
else if (!umove_or_printaddr(tcp, addr, &op))
print_inet_diag_bc_op(&op);
break;
}
case INET_DIAG_BC_MARK_COND:
decode_inet_diag_markcond(tcp, addr, len);
break;
case INET_DIAG_BC_AUTO:
case INET_DIAG_BC_JMP:
case INET_DIAG_BC_NOP:
default:
printstr_ex(tcp, addr, len, QUOTE_FORCE_HEX);
break;
}
}
static bool
decode_inet_diag_bc_op(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
struct inet_diag_bc_op op;
if (len < sizeof(op))
return false;
if (umove_or_printaddr(tcp, addr, &op))
return true;
if (len > sizeof(op))
tprints("{");
print_inet_diag_bc_op(&op);
if (len > sizeof(op)) {
tprints(", ");
decode_bytecode_data(tcp, addr + sizeof(op),
len - sizeof(op), op.code);
tprints("}");
}
return true;
}
static const nla_decoder_t inet_diag_req_nla_decoders[] = {
[INET_DIAG_REQ_BYTECODE] = decode_inet_diag_bc_op
};
static void
decode_inet_diag_req_compat(struct tcb *const tcp,
const struct nlmsghdr *const nlmsghdr,
const uint8_t family,
const kernel_ulong_t addr,
const unsigned int len)
{
struct inet_diag_req req = { .idiag_family = family };
size_t offset = sizeof(req.idiag_family);
bool decode_nla = false;
PRINT_FIELD_XVAL("{", req, idiag_family, addrfams, "AF_???");
tprints(", ");
if (len >= sizeof(req)) {
if (!umoven_or_printaddr(tcp, addr + offset,
sizeof(req) - offset,
(void *) &req + offset)) {
PRINT_FIELD_U("", req, idiag_src_len);
PRINT_FIELD_U(", ", req, idiag_dst_len);
PRINT_FIELD_FLAGS(", ", req, idiag_ext,
inet_diag_extended_flags,
"1<<INET_DIAG_\?\?\?-1");
PRINT_FIELD_INET_DIAG_SOCKID(", ", req, id,
req.idiag_family);
PRINT_FIELD_FLAGS(", ", req, idiag_states,
tcp_state_flags, "1<<TCP_???");
PRINT_FIELD_U(", ", req, idiag_dbs);
decode_nla = true;
}
} else
tprints("...");
tprints("}");
offset = NLA_ALIGN(sizeof(req));
if (decode_nla && len > offset) {
tprints(", ");
decode_nlattr(tcp, addr + offset, len - offset,
inet_diag_req_attrs, "INET_DIAG_REQ_???",
inet_diag_req_nla_decoders,
ARRAY_SIZE(inet_diag_req_nla_decoders), NULL);
}
}
static void
decode_inet_diag_req_v2(struct tcb *const tcp,
const struct nlmsghdr *const nlmsghdr,
const uint8_t family,
const kernel_ulong_t addr,
const unsigned int len)
{
struct inet_diag_req_v2 req = { .sdiag_family = family };
size_t offset = sizeof(req.sdiag_family);
bool decode_nla = false;
PRINT_FIELD_XVAL("{", req, sdiag_family, addrfams, "AF_???");
tprints(", ");
if (len >= sizeof(req)) {
if (!umoven_or_printaddr(tcp, addr + offset,
sizeof(req) - offset,
(void *) &req + offset)) {
PRINT_FIELD_XVAL("", req, sdiag_protocol,
inet_protocols, "IPPROTO_???");
PRINT_FIELD_FLAGS(", ", req, idiag_ext,
inet_diag_extended_flags,
"1<<INET_DIAG_\?\?\?-1");
PRINT_FIELD_FLAGS(", ", req, idiag_states,
tcp_state_flags, "1<<TCP_???");
PRINT_FIELD_INET_DIAG_SOCKID(", ", req, id,
req.sdiag_family);
decode_nla = true;
}
} else
tprints("...");
tprints("}");
offset = NLA_ALIGN(sizeof(req));
if (decode_nla && len > offset) {
tprints(", ");
decode_nlattr(tcp, addr + offset, len - offset,
inet_diag_req_attrs, "INET_DIAG_REQ_???",
inet_diag_req_nla_decoders,
ARRAY_SIZE(inet_diag_req_nla_decoders), NULL);
}
}
DECL_NETLINK_DIAG_DECODER(decode_inet_diag_req)
{
if (nlmsghdr->nlmsg_type == TCPDIAG_GETSOCK
|| nlmsghdr->nlmsg_type == DCCPDIAG_GETSOCK)
return decode_inet_diag_req_compat(tcp, nlmsghdr,
family, addr, len);
else
return decode_inet_diag_req_v2(tcp, nlmsghdr,
family, addr, len);
}
static bool
decode_inet_diag_meminfo(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
struct inet_diag_meminfo minfo;
if (len < sizeof(minfo))
return false;
if (umove_or_printaddr(tcp, addr, &minfo))
return true;
PRINT_FIELD_U("{", minfo, idiag_rmem);
PRINT_FIELD_U(", ", minfo, idiag_wmem);
PRINT_FIELD_U(", ", minfo, idiag_fmem);
PRINT_FIELD_U(", ", minfo, idiag_tmem);
tprints("}");
return true;
}
static bool
decode_tcpvegas_info(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
struct tcpvegas_info vegas;
if (len < sizeof(vegas))
return false;
if (umove_or_printaddr(tcp, addr, &vegas))
return true;
PRINT_FIELD_U("{", vegas, tcpv_enabled);
PRINT_FIELD_U(", ", vegas, tcpv_rttcnt);
PRINT_FIELD_U(", ", vegas, tcpv_rtt);
PRINT_FIELD_U(", ", vegas, tcpv_minrtt);
tprints("}");
return true;
}
static bool
decode_tcp_dctcp_info(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
struct tcp_dctcp_info dctcp;
if (len < sizeof(dctcp))
return false;
if (umove_or_printaddr(tcp, addr, &dctcp))
return true;
PRINT_FIELD_U("{", dctcp, dctcp_enabled);
PRINT_FIELD_U(", ", dctcp, dctcp_ce_state);
PRINT_FIELD_U(", ", dctcp, dctcp_alpha);
PRINT_FIELD_U(", ", dctcp, dctcp_ab_ecn);
PRINT_FIELD_U(", ", dctcp, dctcp_ab_tot);
tprints("}");
return true;
}
static bool
decode_tcp_bbr_info(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
struct tcp_bbr_info bbr;
if (len < sizeof(bbr))
return false;
if (umove_or_printaddr(tcp, addr, &bbr))
return true;
PRINT_FIELD_X("{", bbr, bbr_bw_lo);
PRINT_FIELD_X(", ", bbr, bbr_bw_hi);
PRINT_FIELD_U(", ", bbr, bbr_min_rtt);
PRINT_FIELD_U(", ", bbr, bbr_pacing_gain);
PRINT_FIELD_U(", ", bbr, bbr_cwnd_gain);
tprints("}");
return true;
}
static const nla_decoder_t inet_diag_msg_nla_decoders[] = {
[INET_DIAG_MEMINFO] = decode_inet_diag_meminfo,
[INET_DIAG_INFO] = NULL, /* unimplemented */
[INET_DIAG_VEGASINFO] = decode_tcpvegas_info,
[INET_DIAG_CONG] = decode_nla_str,
[INET_DIAG_TOS] = decode_nla_u8,
[INET_DIAG_TCLASS] = decode_nla_u8,
[INET_DIAG_SKMEMINFO] = decode_nla_meminfo,
[INET_DIAG_SHUTDOWN] = decode_nla_u8,
[INET_DIAG_DCTCPINFO] = decode_tcp_dctcp_info,
[INET_DIAG_PROTOCOL] = decode_nla_u8,
[INET_DIAG_SKV6ONLY] = decode_nla_u8,
[INET_DIAG_LOCALS] = NULL, /* unimplemented */
[INET_DIAG_PEERS] = NULL, /* unimplemented */
[INET_DIAG_PAD] = NULL,
[INET_DIAG_MARK] = decode_nla_u32,
[INET_DIAG_BBRINFO] = decode_tcp_bbr_info
};
DECL_NETLINK_DIAG_DECODER(decode_inet_diag_msg)
{
struct inet_diag_msg msg = { .idiag_family = family };
size_t offset = sizeof(msg.idiag_family);
bool decode_nla = false;
PRINT_FIELD_XVAL("{", msg, idiag_family, addrfams, "AF_???");
tprints(", ");
if (len >= sizeof(msg)) {
if (!umoven_or_printaddr(tcp, addr + offset,
sizeof(msg) - offset,
(void *) &msg + offset)) {
PRINT_FIELD_XVAL("", msg, idiag_state,
tcp_states, "TCP_???");
PRINT_FIELD_U(", ", msg, idiag_timer);
PRINT_FIELD_U(", ", msg, idiag_retrans);
PRINT_FIELD_INET_DIAG_SOCKID(", ", msg, id,
msg.idiag_family);
PRINT_FIELD_U(", ", msg, idiag_expires);
PRINT_FIELD_U(", ", msg, idiag_rqueue);
PRINT_FIELD_U(", ", msg, idiag_wqueue);
PRINT_FIELD_U(", ", msg, idiag_uid);
PRINT_FIELD_U(", ", msg, idiag_inode);
decode_nla = true;
}
} else
tprints("...");
tprints("}");
offset = NLA_ALIGN(sizeof(msg));
if (decode_nla && len > offset) {
tprints(", ");
decode_nlattr(tcp, addr + offset, len - offset,
inet_diag_attrs, "INET_DIAG_???",
inet_diag_msg_nla_decoders,
ARRAY_SIZE(inet_diag_msg_nla_decoders), NULL);
}
}

191
netlink_netlink_diag.c Normal file
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@ -0,0 +1,191 @@
/*
* Copyright (c) 2016 Fabien Siron <fabien.siron@epita.fr>
* Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com>
* Copyright (c) 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"
#include "netlink.h"
#include "netlink_sock_diag.h"
#include "nlattr.h"
#include "print_fields.h"
#include <linux/sock_diag.h>
#include <linux/netlink_diag.h>
#include "xlat/netlink_diag_attrs.h"
#include "xlat/netlink_diag_show.h"
#include "xlat/netlink_socket_flags.h"
#include "xlat/netlink_states.h"
DECL_NETLINK_DIAG_DECODER(decode_netlink_diag_req)
{
struct netlink_diag_req req = { .sdiag_family = family };
const size_t offset = sizeof(req.sdiag_family);
PRINT_FIELD_XVAL("{", req, sdiag_family, addrfams, "AF_???");
tprints(", ");
if (len >= sizeof(req)) {
if (!umoven_or_printaddr(tcp, addr + offset,
sizeof(req) - offset,
(void *) &req + offset)) {
if (NDIAG_PROTO_ALL == req.sdiag_protocol)
tprintf("%s=%s",
"sdiag_protocol", "NDIAG_PROTO_ALL");
else
PRINT_FIELD_XVAL("", req, sdiag_protocol,
netlink_protocols,
"NETLINK_???");
PRINT_FIELD_U(", ", req, ndiag_ino);
PRINT_FIELD_FLAGS(", ", req, ndiag_show,
netlink_diag_show, "NDIAG_SHOW_???");
PRINT_FIELD_COOKIE(", ", req, ndiag_cookie);
}
} else
tprints("...");
tprints("}");
}
static bool
print_group(struct tcb *const tcp,
void *const elem_buf,
const size_t elem_size,
void *const opaque_data)
{
if (elem_size < sizeof(kernel_ulong_t))
tprintf("%#0*x", (int) elem_size * 2 + 2,
*(unsigned int *) elem_buf);
else
tprintf("%#0*" PRI_klx, (int) elem_size * 2 + 2,
*(kernel_ulong_t *) elem_buf);
return true;
}
static bool
decode_netlink_diag_groups(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
kernel_ulong_t buf;
const size_t nmemb = len / current_wordsize;
if (!nmemb)
return false;
print_array(tcp, addr, nmemb, &buf, current_wordsize,
umoven_or_printaddr, print_group, 0);
return true;
}
static bool
decode_netlink_diag_ring(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
struct netlink_diag_ring ndr;
if (len < sizeof(ndr))
return false;
if (umove_or_printaddr(tcp, addr, &ndr))
return true;
PRINT_FIELD_U("{", ndr, ndr_block_size);
PRINT_FIELD_U(", ", ndr, ndr_block_nr);
PRINT_FIELD_U(", ", ndr, ndr_frame_size);
PRINT_FIELD_U(", ", ndr, ndr_frame_nr);
tprints("}");
return true;
}
static bool
decode_netlink_diag_flags(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
uint32_t flags;
if (len < sizeof(flags))
return false;
if (umove_or_printaddr(tcp, addr, &flags))
return true;
printflags(netlink_socket_flags, flags, "NDIAG_FLAG_???");
return true;
}
static const nla_decoder_t netlink_diag_msg_nla_decoders[] = {
[NETLINK_DIAG_MEMINFO] = decode_nla_meminfo,
[NETLINK_DIAG_GROUPS] = decode_netlink_diag_groups,
[NETLINK_DIAG_RX_RING] = decode_netlink_diag_ring,
[NETLINK_DIAG_TX_RING] = decode_netlink_diag_ring,
[NETLINK_DIAG_FLAGS] = decode_netlink_diag_flags
};
DECL_NETLINK_DIAG_DECODER(decode_netlink_diag_msg)
{
struct netlink_diag_msg msg = { .ndiag_family = family };
size_t offset = sizeof(msg.ndiag_family);
bool decode_nla = false;
PRINT_FIELD_XVAL("{", msg, ndiag_family, addrfams, "AF_???");
tprints(", ");
if (len >= sizeof(msg)) {
if (!umoven_or_printaddr(tcp, addr + offset,
sizeof(msg) - offset,
(void *) &msg + offset)) {
PRINT_FIELD_XVAL("", msg, ndiag_type,
socktypes, "SOCK_???");
PRINT_FIELD_XVAL(", ", msg, ndiag_protocol,
netlink_protocols, "NETLINK_???");
PRINT_FIELD_XVAL(", ", msg, ndiag_state,
netlink_states, "NETLINK_???");
PRINT_FIELD_U(", ", msg, ndiag_portid);
PRINT_FIELD_U(", ", msg, ndiag_dst_portid);
PRINT_FIELD_U(", ", msg, ndiag_dst_group);
PRINT_FIELD_U(", ", msg, ndiag_ino);
PRINT_FIELD_COOKIE(", ", msg, ndiag_cookie);
decode_nla = true;
}
} else
tprints("...");
tprints("}");
offset = NLA_ALIGN(sizeof(msg));
if (decode_nla && len > offset) {
tprints(", ");
decode_nlattr(tcp, addr + offset, len - offset,
netlink_diag_attrs, "NETLINK_DIAG_???",
netlink_diag_msg_nla_decoders,
ARRAY_SIZE(netlink_diag_msg_nla_decoders), NULL);
}
}

210
netlink_packet_diag.c Normal file
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@ -0,0 +1,210 @@
/*
* Copyright (c) 2016 Fabien Siron <fabien.siron@epita.fr>
* Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com>
* Copyright (c) 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"
#include "netlink.h"
#include "netlink_sock_diag.h"
#include "nlattr.h"
#include "print_fields.h"
#include <linux/filter.h>
#include <linux/sock_diag.h>
#include <linux/packet_diag.h>
#include "xlat/packet_diag_attrs.h"
#include "xlat/packet_diag_info_flags.h"
#include "xlat/packet_diag_show.h"
DECL_NETLINK_DIAG_DECODER(decode_packet_diag_req)
{
struct packet_diag_req req = { .sdiag_family = family };
const size_t offset = sizeof(req.sdiag_family);
PRINT_FIELD_XVAL("{", req, sdiag_family, addrfams, "AF_???");
tprints(", ");
if (len >= sizeof(req)) {
if (!umoven_or_printaddr(tcp, addr + offset,
sizeof(req) - offset,
(void *) &req + offset)) {
PRINT_FIELD_XVAL("", req, sdiag_protocol,
ethernet_protocols, "ETH_P_???");
PRINT_FIELD_U(", ", req, pdiag_ino);
PRINT_FIELD_FLAGS(", ", req, pdiag_show,
packet_diag_show, "PACKET_SHOW_???");
PRINT_FIELD_COOKIE(", ", req, pdiag_cookie);
}
} else
tprints("...");
tprints("}");
}
static bool
decode_packet_diag_info(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
struct packet_diag_info pinfo;
if (len < sizeof(pinfo))
return false;
if (umove_or_printaddr(tcp, addr, &pinfo))
return true;
PRINT_FIELD_U("{", pinfo, pdi_index);
PRINT_FIELD_U(", ", pinfo, pdi_version);
PRINT_FIELD_U(", ", pinfo, pdi_reserve);
PRINT_FIELD_U(", ", pinfo, pdi_copy_thresh);
PRINT_FIELD_U(", ", pinfo, pdi_tstamp);
PRINT_FIELD_FLAGS(", ", pinfo, pdi_flags,
packet_diag_info_flags, "PDI_???");
tprints("}");
return true;
}
static bool
print_packet_diag_mclist(struct tcb *const tcp, void *const elem_buf,
const size_t elem_size, void *const opaque_data)
{
struct packet_diag_mclist *dml = elem_buf;
uint16_t alen = dml->pdmc_alen > sizeof(dml->pdmc_addr) ?
sizeof(dml->pdmc_addr) : dml->pdmc_alen;
PRINT_FIELD_IFINDEX("{", *dml, pdmc_index);
PRINT_FIELD_U(", ", *dml, pdmc_count);
PRINT_FIELD_U(", ", *dml, pdmc_type);
PRINT_FIELD_U(", ", *dml, pdmc_alen);
PRINT_FIELD_STRING(", ", *dml, pdmc_addr, alen, QUOTE_FORCE_HEX);
tprints("}");
return true;
}
static bool
decode_packet_diag_mclist(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
struct packet_diag_mclist dml;
const size_t nmemb = len / sizeof(dml);
if (!nmemb)
return false;
print_array(tcp, addr, nmemb, &dml, sizeof(dml),
umoven_or_printaddr, print_packet_diag_mclist, 0);
return true;
}
static bool
decode_packet_diag_ring(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
struct packet_diag_ring pdr;
if (len < sizeof(pdr))
return false;
if (umove_or_printaddr(tcp, addr, &pdr))
return true;
PRINT_FIELD_U("{", pdr, pdr_block_size);
PRINT_FIELD_U(", ", pdr, pdr_block_nr);
PRINT_FIELD_U(", ", pdr, pdr_frame_size);
PRINT_FIELD_U(", ", pdr, pdr_frame_nr);
PRINT_FIELD_U(", ", pdr, pdr_retire_tmo);
PRINT_FIELD_U(", ", pdr, pdr_sizeof_priv);
PRINT_FIELD_U(", ", pdr, pdr_features);
tprints("}");
return true;
}
static bool
decode_packet_diag_filter(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
const unsigned int nmemb = len / sizeof(struct sock_filter);
if (!nmemb || (unsigned short) nmemb != nmemb)
return false;
print_sock_fprog(tcp, addr, nmemb);
return true;
}
static const nla_decoder_t packet_diag_msg_nla_decoders[] = {
[PACKET_DIAG_INFO] = decode_packet_diag_info,
[PACKET_DIAG_MCLIST] = decode_packet_diag_mclist,
[PACKET_DIAG_RX_RING] = decode_packet_diag_ring,
[PACKET_DIAG_TX_RING] = decode_packet_diag_ring,
[PACKET_DIAG_FANOUT] = decode_nla_u32,
[PACKET_DIAG_UID] = decode_nla_u32,
[PACKET_DIAG_MEMINFO] = decode_nla_meminfo,
[PACKET_DIAG_FILTER] = decode_packet_diag_filter
};
DECL_NETLINK_DIAG_DECODER(decode_packet_diag_msg)
{
struct packet_diag_msg msg = { .pdiag_family = family };
size_t offset = sizeof(msg.pdiag_family);
bool decode_nla = false;
PRINT_FIELD_XVAL("{", msg, pdiag_family, addrfams, "AF_???");
tprints(", ");
if (len >= sizeof(msg)) {
if (!umoven_or_printaddr(tcp, addr + offset,
sizeof(msg) - offset,
(void *) &msg + offset)) {
PRINT_FIELD_XVAL("", msg, pdiag_type,
socktypes, "SOCK_???");
PRINT_FIELD_U(", ", msg, pdiag_num);
PRINT_FIELD_U(", ", msg, pdiag_ino);
PRINT_FIELD_COOKIE(", ", msg, pdiag_cookie);
decode_nla = true;
}
} else
tprints("...");
tprints("}");
offset = NLA_ALIGN(sizeof(msg));
if (decode_nla && len > offset) {
tprints(", ");
decode_nlattr(tcp, addr + offset, len - offset,
packet_diag_attrs, "PACKET_DIAG_???",
packet_diag_msg_nla_decoders,
ARRAY_SIZE(packet_diag_msg_nla_decoders), NULL);
}
}

190
netlink_smc_diag.c Normal file
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@ -0,0 +1,190 @@
/*
* Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com>
* Copyright (c) 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"
#include <sys/socket.h>
#ifdef AF_SMC
# include "netlink.h"
# include "netlink_sock_diag.h"
# include "nlattr.h"
# include "print_fields.h"
# include <arpa/inet.h>
# include <linux/smc_diag.h>
# include "xlat/smc_diag_attrs.h"
# include "xlat/smc_diag_extended_flags.h"
# include "xlat/smc_link_group_roles.h"
# include "xlat/smc_states.h"
DECL_NETLINK_DIAG_DECODER(decode_smc_diag_req)
{
struct smc_diag_req req = { .diag_family = family };
const size_t offset = sizeof(req.diag_family);
PRINT_FIELD_XVAL("{", req, diag_family, addrfams, "AF_???");
tprints(", ");
if (len >= sizeof(req)) {
if (!umoven_or_printaddr(tcp, addr + offset,
sizeof(req) - offset,
(void *) &req + offset)) {
PRINT_FIELD_FLAGS("", req, diag_ext,
smc_diag_extended_flags,
"1<<SMC_DIAG_\?\?\?-1");
/*
* AF_SMC protocol family socket handler
* keeping the AF_INET sock address.
*/
PRINT_FIELD_INET_DIAG_SOCKID(", ", req, id, AF_INET);
}
} else
tprints("...");
tprints("}");
}
static void
print_smc_diag_cursor(const struct smc_diag_cursor *const cursor)
{
PRINT_FIELD_U("{", *cursor, reserved);
PRINT_FIELD_U(", ", *cursor, wrap);
PRINT_FIELD_U(", ", *cursor, count);
tprints("}");
}
# define PRINT_FIELD_SMC_DIAG_CURSOR(prefix_, where_, field_) \
do { \
tprintf("%s%s=", (prefix_), #field_); \
print_smc_diag_cursor(&(where_).field_); \
} while (0)
static bool
decode_smc_diag_conninfo(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
struct smc_diag_conninfo cinfo;
if (len < sizeof(cinfo))
return false;
if (umove_or_printaddr(tcp, addr, &cinfo))
return true;
PRINT_FIELD_U("{", cinfo, token);
PRINT_FIELD_U(", ", cinfo, sndbuf_size);
PRINT_FIELD_U(", ", cinfo, rmbe_size);
PRINT_FIELD_U(", ", cinfo, peer_rmbe_size);
PRINT_FIELD_SMC_DIAG_CURSOR(", ", cinfo, rx_prod);
PRINT_FIELD_SMC_DIAG_CURSOR(", ", cinfo, rx_cons);
PRINT_FIELD_SMC_DIAG_CURSOR(", ", cinfo, tx_prod);
PRINT_FIELD_SMC_DIAG_CURSOR(", ", cinfo, tx_cons);
PRINT_FIELD_0X(", ", cinfo, rx_prod_flags);
PRINT_FIELD_0X(", ", cinfo, rx_conn_state_flags);
PRINT_FIELD_0X(", ", cinfo, tx_prod_flags);
PRINT_FIELD_0X(", ", cinfo, tx_conn_state_flags);
PRINT_FIELD_SMC_DIAG_CURSOR(", ", cinfo, tx_prep);
PRINT_FIELD_SMC_DIAG_CURSOR(", ", cinfo, tx_sent);
PRINT_FIELD_SMC_DIAG_CURSOR(", ", cinfo, tx_fin);
tprints("}");
return true;
}
static bool
decode_smc_diag_lgrinfo(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
struct smc_diag_lgrinfo linfo;
if (len < sizeof(linfo))
return false;
if (umove_or_printaddr(tcp, addr, &linfo))
return true;
tprints("{lnk[0]={");
PRINT_FIELD_U("", linfo.lnk[0], link_id);
PRINT_FIELD_CSTRING(", ", linfo.lnk[0], ibname);
PRINT_FIELD_U(", ", linfo.lnk[0], ibport);
PRINT_FIELD_CSTRING(", ", linfo.lnk[0], gid);
PRINT_FIELD_CSTRING(", ", linfo.lnk[0], peer_gid);
PRINT_FIELD_XVAL("}, ", linfo, role, smc_link_group_roles, "SMC_???");
tprints("}");
return true;
}
static const nla_decoder_t smc_diag_msg_nla_decoders[] = {
[SMC_DIAG_CONNINFO] = decode_smc_diag_conninfo,
[SMC_DIAG_LGRINFO] = decode_smc_diag_lgrinfo,
[SMC_DIAG_SHUTDOWN] = decode_nla_u8
};
DECL_NETLINK_DIAG_DECODER(decode_smc_diag_msg)
{
struct smc_diag_msg msg = { .diag_family = family };
size_t offset = sizeof(msg.diag_family);
bool decode_nla = false;
PRINT_FIELD_XVAL("{", msg, diag_family, addrfams, "AF_???");
tprints(", ");
if (len >= sizeof(msg)) {
if (!umoven_or_printaddr(tcp, addr + offset,
sizeof(msg) - offset,
(void *) &msg + offset)) {
PRINT_FIELD_XVAL("", msg, diag_state,
smc_states, "SMC_???");
PRINT_FIELD_U(", ", msg, diag_fallback);
PRINT_FIELD_U(", ", msg, diag_shutdown);
/*
* AF_SMC protocol family socket handler
* keeping the AF_INET sock address.
*/
PRINT_FIELD_INET_DIAG_SOCKID(", ", msg, id, AF_INET);
PRINT_FIELD_U(", ", msg, diag_uid);
PRINT_FIELD_U(", ", msg, diag_inode);
decode_nla = true;
}
} else
tprints("...");
tprints("}");
offset = NLA_ALIGN(sizeof(msg));
if (decode_nla && len > offset) {
tprints(", ");
decode_nlattr(tcp, addr + offset, len - offset,
smc_diag_attrs, "SMC_DIAG_???",
smc_diag_msg_nla_decoders,
ARRAY_SIZE(smc_diag_msg_nla_decoders), NULL);
}
}
#endif /* AF_SMC */

1160
netlink_sock_diag.c
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63
netlink_sock_diag.h Normal file
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@ -0,0 +1,63 @@
/*
* 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.
*/
#ifndef STRACE_NETLINK_SOCK_DIAG_H
#define STRACE_NETLINK_SOCK_DIAG_H
#define DECL_NETLINK_DIAG_DECODER(diag_decode_name) \
void \
diag_decode_name(struct tcb *tcp, \
const struct nlmsghdr *nlmsghdr, \
uint8_t family, \
kernel_ulong_t addr, \
unsigned int len)
extern DECL_NETLINK_DIAG_DECODER(decode_inet_diag_msg);
extern DECL_NETLINK_DIAG_DECODER(decode_inet_diag_req);
extern DECL_NETLINK_DIAG_DECODER(decode_netlink_diag_msg);
extern DECL_NETLINK_DIAG_DECODER(decode_netlink_diag_req);
extern DECL_NETLINK_DIAG_DECODER(decode_packet_diag_msg);
extern DECL_NETLINK_DIAG_DECODER(decode_packet_diag_req);
extern DECL_NETLINK_DIAG_DECODER(decode_smc_diag_msg);
extern DECL_NETLINK_DIAG_DECODER(decode_smc_diag_req);
extern DECL_NETLINK_DIAG_DECODER(decode_unix_diag_msg);
extern DECL_NETLINK_DIAG_DECODER(decode_unix_diag_req);
struct inet_diag_sockid;
extern void
print_inet_diag_sockid(const struct inet_diag_sockid *, const uint8_t family);
#define PRINT_FIELD_INET_DIAG_SOCKID(prefix_, where_, field_, af_) \
do { \
STRACE_PRINTF("%s%s=", (prefix_), #field_); \
print_inet_diag_sockid(&(where_).field_, (af_)); \
} while (0)
#endif /* !STRACE_NETLINK_SOCK_DIAG_H */

177
netlink_unix_diag.c Normal file
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@ -0,0 +1,177 @@
/*
* Copyright (c) 2016 Fabien Siron <fabien.siron@epita.fr>
* Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com>
* Copyright (c) 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"
#include "netlink.h"
#include "netlink_sock_diag.h"
#include "nlattr.h"
#include "print_fields.h"
#include <linux/sock_diag.h>
#include <linux/unix_diag.h>
#include "xlat/unix_diag_attrs.h"
#include "xlat/unix_diag_show.h"
DECL_NETLINK_DIAG_DECODER(decode_unix_diag_req)
{
struct unix_diag_req req = { .sdiag_family = family };
const size_t offset = sizeof(req.sdiag_family);
PRINT_FIELD_XVAL("{", req, sdiag_family, addrfams, "AF_???");
tprints(", ");
if (len >= sizeof(req)) {
if (!umoven_or_printaddr(tcp, addr + offset,
sizeof(req) - offset,
(void *) &req + offset)) {
PRINT_FIELD_U("", req, sdiag_protocol);
PRINT_FIELD_FLAGS(", ", req, udiag_states,
tcp_state_flags, "1<<TCP_???");
PRINT_FIELD_U(", ", req, udiag_ino);
PRINT_FIELD_FLAGS(", ", req, udiag_show,
unix_diag_show, "UDIAG_SHOW_???");
PRINT_FIELD_COOKIE(", ", req, udiag_cookie);
}
} else
tprints("...");
tprints("}");
}
static bool
decode_unix_diag_vfs(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
struct unix_diag_vfs uv;
if (len < sizeof(uv))
return false;
if (umove_or_printaddr(tcp, addr, &uv))
return true;
PRINT_FIELD_DEV("{", uv, udiag_vfs_dev);
PRINT_FIELD_U(", ", uv, udiag_vfs_ino);
tprints("}");
return true;
}
static bool
print_inode(struct tcb *const tcp,
void *const elem_buf,
const size_t elem_size,
void *const opaque_data)
{
tprintf("%" PRIu32, *(uint32_t *) elem_buf);
return true;
}
static bool
decode_unix_diag_inode(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
uint32_t inode;
const size_t nmemb = len / sizeof(inode);
if (!nmemb)
return false;
print_array(tcp, addr, nmemb, &inode, sizeof(inode),
umoven_or_printaddr, print_inode, 0);
return true;
}
static bool
decode_unix_diag_rqlen(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
struct unix_diag_rqlen rql;
if (len < sizeof(rql))
return false;
if (umove_or_printaddr(tcp, addr, &rql))
return true;
PRINT_FIELD_U("{", rql, udiag_rqueue);
PRINT_FIELD_U(", ", rql, udiag_wqueue);
tprints("}");
return true;
}
static const nla_decoder_t unix_diag_msg_nla_decoders[] = {
[UNIX_DIAG_NAME] = decode_nla_str,
[UNIX_DIAG_VFS] = decode_unix_diag_vfs,
[UNIX_DIAG_PEER] = decode_nla_u32,
[UNIX_DIAG_ICONS] = decode_unix_diag_inode,
[UNIX_DIAG_RQLEN] = decode_unix_diag_rqlen,
[UNIX_DIAG_MEMINFO] = decode_nla_meminfo,
[UNIX_DIAG_SHUTDOWN] = decode_nla_u8
};
DECL_NETLINK_DIAG_DECODER(decode_unix_diag_msg)
{
struct unix_diag_msg msg = { .udiag_family = family };
size_t offset = sizeof(msg.udiag_family);
bool decode_nla = false;
PRINT_FIELD_XVAL("{", msg, udiag_family, addrfams, "AF_???");
tprints(", ");
if (len >= sizeof(msg)) {
if (!umoven_or_printaddr(tcp, addr + offset,
sizeof(msg) - offset,
(void *) &msg + offset)) {
PRINT_FIELD_XVAL("", msg, udiag_type,
socktypes, "SOCK_???");
PRINT_FIELD_XVAL(", ", msg, udiag_state,
tcp_states, "TCP_???");
PRINT_FIELD_U(", ", msg, udiag_ino);
PRINT_FIELD_COOKIE(", ", msg, udiag_cookie);
decode_nla = true;
}
} else
tprints("...");
tprints("}");
offset = NLMSG_ALIGN(sizeof(msg));
if (decode_nla && len > offset) {
tprints(", ");
decode_nlattr(tcp, addr + offset, len - offset,
unix_diag_attrs, "UNIX_DIAG_???",
unix_diag_msg_nla_decoders,
ARRAY_SIZE(unix_diag_msg_nla_decoders), NULL);
}
}

38
nlattr.c
View File

@ -30,6 +30,7 @@
#include "defs.h"
#include "netlink.h"
#include "nlattr.h"
#include <linux/sock_diag.h>
static bool
fetch_nlattr(struct tcb *const tcp, struct nlattr *const nlattr,
@ -166,6 +167,43 @@ decode_nla_strn(struct tcb *const tcp,
return true;
}
static bool
print_meminfo(struct tcb *const tcp,
void *const elem_buf,
const size_t elem_size,
void *const opaque_data)
{
unsigned int *const count = opaque_data;
if ((*count)++ >= SK_MEMINFO_VARS) {
tprints("...");
return false;
}
tprintf("%" PRIu32, *(uint32_t *) elem_buf);
return true;
}
bool
decode_nla_meminfo(struct tcb *const tcp,
const kernel_ulong_t addr,
const unsigned int len,
const void *const opaque_data)
{
uint32_t mem;
const size_t nmemb = len / sizeof(mem);
if (!nmemb)
return false;
unsigned int count = 0;
print_array(tcp, addr, nmemb, &mem, sizeof(mem),
umoven_or_printaddr, print_meminfo, &count);
return true;
}
#define DECODE_NLA_INTEGER(name, type, fmt) \
bool \
decode_nla_ ## name(struct tcb *const tcp, \

1
nlattr.h
View File

@ -56,5 +56,6 @@ DECL_NLA(s32);
DECL_NLA(s64);
DECL_NLA(str);
DECL_NLA(strn);
DECL_NLA(meminfo);
#endif /* !STRACE_NLATTR_H */