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

   1 /*
   2  * Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com>
   3  * Copyright (c) 2017 The strace developers.
   4  * All rights reserved.
   5  *
   6  * Redistribution and use in source and binary forms, with or without
   7  * modification, are permitted provided that the following conditions
   8  * are met:
   9  * 1. Redistributions of source code must retain the above copyright
  10  *    notice, this list of conditions and the following disclaimer.
  11  * 2. Redistributions in binary form must reproduce the above copyright
  12  *    notice, this list of conditions and the following disclaimer in the
  13  *    documentation and/or other materials provided with the distribution.
  14  * 3. The name of the author may not be used to endorse or promote products
  15  *    derived from this software without specific prior written permission.
  16  *
  17  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  18  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  19  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
  20  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
  21  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  22  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  23  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  24  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  25  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
  26  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  27  */
  28
  29 #include "tests.h"
  30
  31 #include <stdio.h>
  32 #include <string.h>
  33 #include <stdint.h>
  34 #include "test_nlattr.h"
  35 #include <linux/netlink_diag.h>
  36 #include <linux/sock_diag.h>
  37
  38 static void
  39 init_netlink_diag_msg(struct nlmsghdr *const nlh, const unsigned int msg_len)
  40 {
  41         SET_STRUCT(struct nlmsghdr, nlh,
  42                 .nlmsg_len = msg_len,
  43                 .nlmsg_type = SOCK_DIAG_BY_FAMILY,
  44                 .nlmsg_flags = NLM_F_DUMP
  45         );
  46
  47         struct netlink_diag_msg *const msg = NLMSG_DATA(nlh);
  48         SET_STRUCT(struct netlink_diag_msg, msg,
  49                 .ndiag_family = AF_NETLINK,
  50                 .ndiag_type = SOCK_RAW,
  51                 .ndiag_protocol = NETLINK_ROUTE,
  52                 .ndiag_state = NETLINK_CONNECTED
  53         );
  54 }
  55
  56 static void
  57 print_netlink_diag_msg(const unsigned int msg_len)
  58 {
  59         printf("{len=%u, type=SOCK_DIAG_BY_FAMILY"
  60                ", flags=NLM_F_DUMP, seq=0, pid=0}, {ndiag_family=AF_NETLINK"
  61                ", ndiag_type=SOCK_RAW, ndiag_protocol=NETLINK_ROUTE"
  62                ", ndiag_state=NETLINK_CONNECTED, ndiag_portid=0"
  63                ", ndiag_dst_portid=0, ndiag_dst_group=0, ndiag_ino=0"
  64                ", ndiag_cookie=[0, 0]}",
  65                msg_len);
  66 }
  67
  68 static void
  69 print_xlong(const unsigned long *p)
  70 {
  71         printf("%#lx", *p);
  72 }
  73
  74 int
  75 main(void)
  76 {
  77         skip_if_unavailable("/proc/self/fd/");
  78
  79         const int fd = create_nl_socket(NETLINK_SOCK_DIAG);
  80         const unsigned int hdrlen = sizeof(struct netlink_diag_msg);
  81         void *const nlh0 = tail_alloc(NLMSG_SPACE(hdrlen));
  82
  83         static char pattern[4096];
  84         fill_memory_ex(pattern, sizeof(pattern), 'a', 'z' - 'a' + 1);
  85
  86         static const unsigned long groups[] = {
  87                 (unsigned long) 0xdeadbeefbadc0dedULL,
  88                 (unsigned long) 0xdeadbeefbadc0dedULL
  89         };
  90         TEST_NLATTR_ARRAY(fd, nlh0, hdrlen,
  91                           init_netlink_diag_msg, print_netlink_diag_msg,
  92                           NETLINK_DIAG_GROUPS, pattern, groups, print_xlong);
  93
  94         static const struct netlink_diag_ring ndr = {
  95                 .ndr_block_size = 0xfabfabdc,
  96                 .ndr_block_nr = 0xabcdabda,
  97                 .ndr_frame_size = 0xcbadbafa,
  98                 .ndr_frame_nr = 0xdbcafadb
  99         };
 100         TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
 101                            init_netlink_diag_msg, print_netlink_diag_msg,
 102                            NETLINK_DIAG_RX_RING, pattern, ndr,
 103                            PRINT_FIELD_U("{", ndr, ndr_block_size);
 104                            PRINT_FIELD_U(", ", ndr, ndr_block_nr);
 105                            PRINT_FIELD_U(", ", ndr, ndr_frame_size);
 106                            PRINT_FIELD_U(", ", ndr, ndr_frame_nr);
 107                            printf("}"));
 108
 109         static const uint32_t flags =
 110                 NDIAG_FLAG_CB_RUNNING | NDIAG_FLAG_PKTINFO;
 111         TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
 112                            init_netlink_diag_msg, print_netlink_diag_msg,
 113                            NETLINK_DIAG_FLAGS, pattern, flags,
 114                            printf("NDIAG_FLAG_CB_RUNNING|NDIAG_FLAG_PKTINFO"));
 115
 116         puts("+++ exited with 0 +++");
 117         return 0;
 118 }