granicus.if.org Git - strace/blob - tests/nlattr_mdba_router_port.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 #ifdef HAVE_STRUCT_BR_PORT_MSG
  12
  13 # include <stdio.h>
  14 # include "test_nlattr.h"
  15 # include <linux/if_bridge.h>
  16 # include <linux/rtnetlink.h>
  17
  18 # ifndef MDBA_ROUTER
  19 #  define MDBA_ROUTER 2
  20 # endif
  21 # ifndef MDBA_ROUTER_PORT
  22 #  define MDBA_ROUTER_PORT 1
  23 # endif
  24 # ifndef MDBA_ROUTER_PATTR_TYPE
  25 #  define MDBA_ROUTER_PATTR_TYPE 2
  26 # endif
  27 # ifndef MDB_RTR_TYPE_DISABLED
  28 #  define MDB_RTR_TYPE_DISABLED 0
  29 # endif
  30
  31 const unsigned int hdrlen = sizeof(struct br_port_msg);
  32
  33 static void
  34 init_br_port_msg(struct nlmsghdr *const nlh, const unsigned int msg_len)
  35 {
  36         SET_STRUCT(struct nlmsghdr, nlh,
  37                 .nlmsg_len = msg_len,
  38                 .nlmsg_type = RTM_GETMDB,
  39                 .nlmsg_flags = NLM_F_DUMP
  40         );
  41
  42         struct br_port_msg *const msg = NLMSG_DATA(nlh);
  43         SET_STRUCT(struct br_port_msg, msg,
  44                 .family = AF_UNIX,
  45                 .ifindex = ifindex_lo()
  46         );
  47
  48         struct nlattr *nla = NLMSG_ATTR(nlh, sizeof(*msg));
  49         SET_STRUCT(struct nlattr, nla,
  50                 .nla_len = msg_len - NLMSG_SPACE(hdrlen),
  51                 .nla_type = MDBA_ROUTER
  52         );
  53 }
  54
  55 static void
  56 print_br_port_msg(const unsigned int msg_len)
  57 {
  58         printf("{len=%u, type=RTM_GETMDB, flags=NLM_F_DUMP"
  59                ", seq=0, pid=0}, {family=AF_UNIX"
  60                ", ifindex=" IFINDEX_LO_STR "}"
  61                ", {{nla_len=%u, nla_type=MDBA_ROUTER}",
  62                msg_len, msg_len - NLMSG_SPACE(hdrlen));
  63 }
  64
  65 int
  66 main(void)
  67 {
  68         skip_if_unavailable("/proc/self/fd/");
  69
  70         const uint32_t ifindex = ifindex_lo();
  71         const uint8_t type = MDB_RTR_TYPE_DISABLED;
  72         static const struct nlattr nla = {
  73                 .nla_len = NLA_HDRLEN + sizeof(type),
  74                 .nla_type = MDBA_ROUTER_PATTR_TYPE
  75         };
  76         char buf[NLMSG_ALIGN(ifindex) + NLA_HDRLEN + sizeof(type)];
  77
  78         const int fd = create_nl_socket(NETLINK_ROUTE);
  79
  80         void *nlh0 = midtail_alloc(NLMSG_SPACE(hdrlen),
  81                                    NLA_HDRLEN + sizeof(buf));
  82
  83         static char pattern[4096];
  84         fill_memory_ex(pattern, sizeof(pattern), 'a', 'z' - 'a' + 1);
  85
  86         TEST_NESTED_NLATTR_OBJECT(fd, nlh0, hdrlen,
  87                                   init_br_port_msg, print_br_port_msg,
  88                                   MDBA_ROUTER_PORT, pattern, ifindex,
  89                                   printf(IFINDEX_LO_STR));
  90
  91         memcpy(buf, &ifindex, sizeof(ifindex));
  92         memcpy(buf + NLMSG_ALIGN(ifindex), &nla, sizeof(nla));
  93         memcpy(buf + NLMSG_ALIGN(ifindex) + NLA_HDRLEN, &type, sizeof(type));
  94         TEST_NLATTR(fd, nlh0 - NLA_HDRLEN, hdrlen + NLA_HDRLEN,
  95                     init_br_port_msg, print_br_port_msg,
  96                     MDBA_ROUTER_PORT, sizeof(buf), buf, sizeof(buf),
  97                     printf(IFINDEX_LO_STR
  98                            ", {{nla_len=%u, nla_type=MDBA_ROUTER_PATTR_TYPE}"
  99                            ", MDB_RTR_TYPE_DISABLED}}",
 100                            nla.nla_len));
 101
 102         puts("+++ exited with 0 +++");
 103         return 0;
 104 }
 105
 106 #else
 107
 108 SKIP_MAIN_UNDEFINED("HAVE_STRUCT_BR_PORT_MSG")
 109
 110 #endif