1 /* 2 * Copyright (c) 2017 JingPiao Chen <chenjingpiao@gmail.com> 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions 7 * are met: 8 * 1. Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * 2. Redistributions in binary form must reproduce the above copyright 11 * notice, this list of conditions and the following disclaimer in the 12 * documentation and/or other materials provided with the distribution. 13 * 3. The name of the author may not be used to endorse or promote products 14 * derived from this software without specific prior written permission. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 17 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 18 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 19 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 20 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 21 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 22 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 23 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 24 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 25 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 26 */ 27 28 #include "tests.h" 29 30 #ifdef HAVE_LINUX_NETFILTER_NFNETLINK_H 31 32 # include <stdio.h> 33 # include <string.h> 34 # include <unistd.h> 35 # include <sys/socket.h> 36 # include "netlink.h" 37 # include <linux/netfilter/nfnetlink.h> 38 39 static void 40 test_nlmsg_type(const int fd) 41 { 42 long rc; 43 struct nlmsghdr nlh = { 44 .nlmsg_len = sizeof(nlh), 45 .nlmsg_flags = NLM_F_REQUEST, 46 }; 47 48 # ifdef NFNL_MSG_BATCH_BEGIN 49 nlh.nlmsg_type = NFNL_MSG_BATCH_BEGIN; 50 rc = sendto(fd, &nlh, sizeof(nlh), MSG_DONTWAIT, NULL, 0); 51 printf("sendto(%d, {len=%u, type=NFNL_MSG_BATCH_BEGIN" 52 ", flags=NLM_F_REQUEST, seq=0, pid=0}" 53 ", %u, MSG_DONTWAIT, NULL, 0) = %s\n", 54 fd, nlh.nlmsg_len, (unsigned) sizeof(nlh), sprintrc(rc)); 55 # endif 56 57 nlh.nlmsg_type = NFNL_SUBSYS_CTNETLINK << 8 | 0xff; 58 rc = sendto(fd, &nlh, sizeof(nlh), MSG_DONTWAIT, NULL, 0); 59 printf("sendto(%d, {len=%u" 60 ", type=NFNL_SUBSYS_CTNETLINK<<8|0xff /* IPCTNL_MSG_CT_??? */" 61 ", flags=NLM_F_REQUEST, seq=0, pid=0}" 62 ", %u, MSG_DONTWAIT, NULL, 0) = %s\n", 63 fd, nlh.nlmsg_len, (unsigned) sizeof(nlh), sprintrc(rc)); 64 65 nlh.nlmsg_type = 0xffff; 66 rc = sendto(fd, &nlh, sizeof(nlh), MSG_DONTWAIT, NULL, 0); 67 printf("sendto(%d, {len=%u, type=0xff /* NFNL_SUBSYS_??? */<<8|0xff" 68 ", flags=NLM_F_REQUEST, seq=0, pid=0}" 69 ", %u, MSG_DONTWAIT, NULL, 0) = %s\n", 70 fd, nlh.nlmsg_len, (unsigned) sizeof(nlh), sprintrc(rc)); 71 } 72 73 int main(void) 74 { 75 skip_if_unavailable("/proc/self/fd/"); 76 77 int fd = create_nl_socket(NETLINK_NETFILTER); 78 79 test_nlmsg_type(fd); 80 81 printf("+++ exited with 0 +++\n"); 82 83 return 0; 84 } 85 86 #else 87 88 SKIP_MAIN_UNDEFINED("HAVE_LINUX_NETFILTER_NFNETLINK_H") 89 90 #endif 91