granicus.if.org Git - strace/blob - rtnl_nsid.c

   1 /*
   2  * Copyright (c) 2016 Fabien Siron <fabien.siron@epita.fr>
   3  * Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com>
   4  * Copyright (c) 2016-2017 The strace developers.
   5  * All rights reserved.
   6  *
   7  * SPDX-License-Identifier: LGPL-2.1-or-later
   8  */
   9
  10 #include "defs.h"
  11 #include "netlink_route.h"
  12 #include "nlattr.h"
  13 #include "print_fields.h"
  14
  15 #include "netlink.h"
  16 #include <linux/rtnetlink.h>
  17
  18 #include "xlat/rtnl_nsid_attrs.h"
  19
  20 static const nla_decoder_t rtgenmsg_nla_decoders[] = {
  21         [NETNSA_NSID]   = decode_nla_s32,
  22         [NETNSA_PID]    = decode_nla_u32,
  23         [NETNSA_FD]     = decode_nla_fd
  24 };
  25
  26 DECL_NETLINK_ROUTE_DECODER(decode_rtgenmsg)
  27 {
  28         struct rtgenmsg rtgenmsg = { .rtgen_family = family };
  29
  30         PRINT_FIELD_XVAL("{", rtgenmsg, rtgen_family, addrfams, "AF_???");
  31         tprints("}");
  32
  33         const size_t offset = NLMSG_ALIGN(sizeof(rtgenmsg));
  34         if (len > offset) {
  35                 tprints(", ");
  36                 decode_nlattr(tcp, addr + offset, len - offset,
  37                               rtnl_nsid_attrs, "NETNSA_???",
  38                               rtgenmsg_nla_decoders,
  39                               ARRAY_SIZE(rtgenmsg_nla_decoders), NULL);
  40         }
  41 }