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 38static void 39init_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 56static void 57print_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 68static void 69print_xlong(const unsigned long *p) 70{ 71 printf("%#lx", *p); 72} 73 74int 75main(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} 119