strace/rtnl_nsid.c
Dmitry V. Levin 300d9f1fee netlink: print descriptor attributes using printfd
* nlattr.h (DECL_NLA(fd)): New prototype.
* nlattr.c (decode_nla_fd): New function.
* rtnl_link.c (ifla_xdp_nla_decoders) <IFLA_XDP_FD>: Use it.
(ifinfomsg_nla_decoders) <IFLA_NET_NS_FD>: Likewise.
* rtnl_nsid.c (rtgenmsg_nla_decoders) <NETNSA_FD>: Likewise.
* NEWS: Mention this.
2017-11-15 15:30:49 +00:00

62 lines
2.3 KiB
C

/*
* Copyright (c) 2016 Fabien Siron <fabien.siron@epita.fr>
* 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.
*/
#include "defs.h"
#include "netlink_route.h"
#include "nlattr.h"
#include "print_fields.h"
#include "netlink.h"
#include <linux/rtnetlink.h>
#include "xlat/rtnl_nsid_attrs.h"
static const nla_decoder_t rtgenmsg_nla_decoders[] = {
[NETNSA_NSID] = decode_nla_s32,
[NETNSA_PID] = decode_nla_u32,
[NETNSA_FD] = decode_nla_fd
};
DECL_NETLINK_ROUTE_DECODER(decode_rtgenmsg)
{
struct rtgenmsg rtgenmsg = { .rtgen_family = family };
PRINT_FIELD_XVAL("{", rtgenmsg, rtgen_family, addrfams, "AF_???");
tprints("}");
const size_t offset = NLMSG_ALIGN(sizeof(rtgenmsg));
if (len > offset) {
tprints(", ");
decode_nlattr(tcp, addr + offset, len - offset,
rtnl_nsid_attrs, "NETNSA_???",
rtgenmsg_nla_decoders,
ARRAY_SIZE(rtgenmsg_nla_decoders), NULL);
}
}