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) 2016-2019 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         [NETNSA_TARGET_NSID]    = decode_nla_s32,
  25         [NETNSA_CURRENT_NSID]   = decode_nla_s32
  26 };
  27
  28 DECL_NETLINK_ROUTE_DECODER(decode_rtgenmsg)
  29 {
  30         struct rtgenmsg rtgenmsg = { .rtgen_family = family };
  31
  32         PRINT_FIELD_XVAL("{", rtgenmsg, rtgen_family, addrfams, "AF_???");
  33         tprints("}");
  34
  35         const size_t offset = NLMSG_ALIGN(sizeof(rtgenmsg));
  36         if (len > offset) {
  37                 tprints(", ");
  38                 decode_nlattr(tcp, addr + offset, len - offset,
  39                               rtnl_nsid_attrs, "NETNSA_???",
  40                               rtgenmsg_nla_decoders,
  41                               ARRAY_SIZE(rtgenmsg_nla_decoders), NULL);
  42         }
  43 }