granicus.if.org Git - strace/blob - tests/nlattr_tcamsg.c

   1 /*
   2  * Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com>
   3  * Copyright (c) 2017-2018 The strace developers.
   4  * All rights reserved.
   5  *
   6  * SPDX-License-Identifier: GPL-2.0-or-later
   7  */
   8
   9 #include "tests.h"
  10
  11 #include <stdio.h>
  12 #include "test_nlattr.h"
  13 #include <linux/rtnetlink.h>
  14
  15 static void
  16 init_tcamsg(struct nlmsghdr *const nlh, const unsigned int msg_len)
  17 {
  18         SET_STRUCT(struct nlmsghdr, nlh,
  19                 .nlmsg_len = msg_len,
  20                 .nlmsg_type = RTM_GETACTION,
  21                 .nlmsg_flags = NLM_F_DUMP
  22         );
  23
  24         struct tcamsg *const msg = NLMSG_DATA(nlh);
  25         SET_STRUCT(struct tcamsg, msg,
  26                 .tca_family = AF_INET
  27         );
  28 }
  29
  30 static void
  31 print_tcamsg(const unsigned int msg_len)
  32 {
  33         printf("{len=%u, type=RTM_GETACTION, flags=NLM_F_DUMP"
  34                ", seq=0, pid=0}, {tca_family=AF_INET}",
  35                msg_len);
  36 }
  37
  38 int
  39 main(void)
  40 {
  41         skip_if_unavailable("/proc/self/fd/");
  42
  43         const int fd = create_nl_socket(NETLINK_ROUTE);
  44         const unsigned int hdrlen = sizeof(struct tcamsg);
  45         void *nlh0 = midtail_alloc(NLMSG_SPACE(hdrlen), NLA_HDRLEN + 4);
  46
  47         static char pattern[4096];
  48         fill_memory_ex(pattern, sizeof(pattern), 'a', 'z' - 'a' + 1);
  49
  50         const unsigned int nla_type = 0xffff & NLA_TYPE_MASK;
  51         char nla_type_str[256];
  52         sprintf(nla_type_str, "%#x /* TCA_ACT_??? */", nla_type);
  53         TEST_NLATTR_(fd, nlh0, hdrlen,
  54                      init_tcamsg, print_tcamsg,
  55                      nla_type, nla_type_str,
  56                      4, pattern, 4,
  57                      print_quoted_hex(pattern, 4));
  58
  59         puts("+++ exited with 0 +++");
  60         return 0;
  61 }