1 /*
2 * Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com>
3 * Copyright (c) 2017-2018 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
init_netlink_diag_msg(struct nlmsghdr * const nlh,const unsigned int msg_len)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
print_netlink_diag_msg(const unsigned int msg_len)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
print_xlong(const unsigned long * p,size_t i)69 print_xlong(const unsigned long *p, size_t i)
70 {
71 printf("%#lx", *p);
72 }
73
74 int
main(void)75 main(void)
76 {
77 skip_if_unavailable("/proc/self/fd/");
78
79 static const unsigned long groups[] = {
80 (unsigned long) 0xdeadbeefbadc0dedULL,
81 (unsigned long) 0xdeadbeefbadc0dedULL
82 };
83 static const struct netlink_diag_ring ndr = {
84 .ndr_block_size = 0xfabfabdc,
85 .ndr_block_nr = 0xabcdabda,
86 .ndr_frame_size = 0xcbadbafa,
87 .ndr_frame_nr = 0xdbcafadb
88 };
89 static const uint32_t flags =
90 NDIAG_FLAG_CB_RUNNING | NDIAG_FLAG_PKTINFO;
91
92 const int fd = create_nl_socket(NETLINK_SOCK_DIAG);
93 const unsigned int hdrlen = sizeof(struct netlink_diag_msg);
94 void *const nlh0 = midtail_alloc(NLMSG_SPACE(hdrlen),
95 NLA_HDRLEN +
96 MAX(sizeof(groups), sizeof(ndr)));
97
98 static char pattern[4096];
99 fill_memory_ex(pattern, sizeof(pattern), 'a', 'z' - 'a' + 1);
100
101 TEST_NLATTR_ARRAY(fd, nlh0, hdrlen,
102 init_netlink_diag_msg, print_netlink_diag_msg,
103 NETLINK_DIAG_GROUPS, pattern, groups, print_xlong);
104
105 TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
106 init_netlink_diag_msg, print_netlink_diag_msg,
107 NETLINK_DIAG_RX_RING, pattern, ndr,
108 PRINT_FIELD_U("{", ndr, ndr_block_size);
109 PRINT_FIELD_U(", ", ndr, ndr_block_nr);
110 PRINT_FIELD_U(", ", ndr, ndr_frame_size);
111 PRINT_FIELD_U(", ", ndr, ndr_frame_nr);
112 printf("}"));
113
114 TEST_NLATTR_OBJECT(fd, nlh0, hdrlen,
115 init_netlink_diag_msg, print_netlink_diag_msg,
116 NETLINK_DIAG_FLAGS, pattern, flags,
117 printf("NDIAG_FLAG_CB_RUNNING|NDIAG_FLAG_PKTINFO"));
118
119 puts("+++ exited with 0 +++");
120 return 0;
121 }
122