1 /* 2 * Copyright (c) 2017 JingPiao Chen <chenjingpiao (at) 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 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, size_t i) 70 { 71 printf("%#lx", *p); 72 } 73 74 int 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