1 /* 2 * Copyright (c) 2017 JingPiao Chen <chenjingpiao (at) 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 <inttypes.h> 33 #include "test_nlattr.h" 34 #include <linux/if.h> 35 #include <linux/if_arp.h> 36 #ifdef HAVE_LINUX_IF_LINK_H 37 # include <linux/if_link.h> 38 #endif 39 #include <linux/rtnetlink.h> 40 41 #define IFLA_BRPORT_PRIORITY 2 42 #define IFLA_BRPORT_MESSAGE_AGE_TIMER 21 43 44 const unsigned int hdrlen = sizeof(struct ifinfomsg); 45 46 static void 47 init_ifinfomsg(struct nlmsghdr *const nlh, const unsigned int msg_len) 48 { 49 SET_STRUCT(struct nlmsghdr, nlh, 50 .nlmsg_len = msg_len, 51 .nlmsg_type = RTM_GETLINK, 52 .nlmsg_flags = NLM_F_DUMP 53 ); 54 55 struct ifinfomsg *const msg = NLMSG_DATA(nlh); 56 SET_STRUCT(struct ifinfomsg, msg, 57 .ifi_family = AF_UNIX, 58 .ifi_type = ARPHRD_LOOPBACK, 59 .ifi_index = ifindex_lo(), 60 .ifi_flags = IFF_UP, 61 ); 62 63 struct nlattr *const nla = NLMSG_ATTR(nlh, sizeof(*msg)); 64 SET_STRUCT(struct nlattr, nla, 65 .nla_len = msg_len - NLMSG_SPACE(hdrlen), 66 .nla_type = IFLA_PROTINFO 67 ); 68 } 69 70 static void 71 print_ifinfomsg(const unsigned int msg_len) 72 { 73 printf("{len=%u, type=RTM_GETLINK, flags=NLM_F_DUMP" 74 ", seq=0, pid=0}, {ifi_family=AF_UNIX" 75 ", ifi_type=ARPHRD_LOOPBACK" 76 ", ifi_index=" IFINDEX_LO_STR 77 ", ifi_flags=IFF_UP, ifi_change=0}" 78 ", {{nla_len=%u, nla_type=IFLA_PROTINFO}", 79 msg_len, msg_len - NLMSG_SPACE(hdrlen)); 80 } 81 82 int 83 main(void) 84 { 85 skip_if_unavailable("/proc/self/fd/"); 86 87 const int fd = create_nl_socket(NETLINK_ROUTE); 88 void *nlh0 = tail_alloc(NLMSG_SPACE(hdrlen)); 89 90 static char pattern[4096]; 91 fill_memory_ex(pattern, sizeof(pattern), 'a', 'z' - 'a' + 1); 92 93 const uint16_t u16 = 0xabcd; 94 TEST_NESTED_NLATTR_OBJECT(fd, nlh0, hdrlen, 95 init_ifinfomsg, print_ifinfomsg, 96 IFLA_BRPORT_PRIORITY, pattern, u16, 97 printf("%u", u16)); 98 99 const uint64_t u64 = 0xabcdedeeefeafeab; 100 TEST_NESTED_NLATTR_OBJECT(fd, nlh0, hdrlen, 101 init_ifinfomsg, print_ifinfomsg, 102 IFLA_BRPORT_MESSAGE_AGE_TIMER, pattern, u64, 103 printf("%" PRIu64, u64)); 104 105 #ifdef HAVE_STRUCT_IFLA_BRIDGE_ID 106 static const struct ifla_bridge_id id = { 107 .prio = { 0xab, 0xcd }, 108 .addr = { 0xab, 0xcd, 0xef, 0xac, 0xbc, 0xcd } 109 }; 110 TEST_NESTED_NLATTR_OBJECT(fd, nlh0, hdrlen, 111 init_ifinfomsg, print_ifinfomsg, 112 IFLA_BRPORT_ROOT_ID, pattern, id, 113 printf("{prio=[%u, %u]" 114 ", addr=%02x:%02x:%02x:%02x:%02x:%02x}", 115 id.prio[0], id.prio[1], 116 id.addr[0], id.addr[1], id.addr[2], 117 id.addr[3], id.addr[4], id.addr[5])); 118 #endif 119 120 puts("+++ exited with 0 +++"); 121 return 0; 122 } 123
