1 /* 2 * Copyright (c) 2017 The strace developers. 3 * 4 * Redistribution and use in source and binary forms, with or without 5 * modification, are permitted provided that the following conditions 6 * are met: 7 * 1. Redistributions of source code must retain the above copyright 8 * notice, this list of conditions and the following disclaimer. 9 * 2. Redistributions in binary form must reproduce the above copyright 10 * notice, this list of conditions and the following disclaimer in the 11 * documentation and/or other materials provided with the distribution. 12 * 3. The name of the author may not be used to endorse or promote products 13 * derived from this software without specific prior written permission. 14 * 15 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR 16 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES 17 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 18 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, 19 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT 20 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 21 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 22 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 23 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF 24 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 25 */ 26 27 /* This test case is based on netlink_selinux.c */ 28 29 #include "tests.h" 30 31 #ifdef HAVE_LINUX_GENETLINK_H 32 33 # include <stdio.h> 34 # include <string.h> 35 # include <unistd.h> 36 # include <sys/socket.h> 37 # include "netlink.h" 38 # include <linux/genetlink.h> 39 40 static void 41 test_nlmsg_type(const int fd) 42 { 43 /* 44 * Though GENL_ID_CTRL number is statically fixed in this test case, 45 * strace does not have a builtin knowledge that the corresponding 46 * string is "nlctrl". 47 */ 48 long rc; 49 struct { 50 const struct nlmsghdr nlh; 51 struct genlmsghdr gnlh; 52 } req = { 53 .nlh = { 54 .nlmsg_len = sizeof(req), 55 .nlmsg_type = GENL_ID_CTRL, 56 .nlmsg_flags = NLM_F_DUMP | NLM_F_REQUEST 57 }, 58 .gnlh = { 59 .cmd = CTRL_CMD_GETFAMILY 60 } 61 }; 62 63 rc = sendto(fd, &req, sizeof(req), MSG_DONTWAIT, NULL, 0); 64 printf("sendto(%d, {{len=%u, type=nlctrl" 65 ", flags=NLM_F_REQUEST|0x300, seq=0, pid=0}" 66 ", \"\\x03\\x00\\x00\\x00\"}, %u" 67 ", MSG_DONTWAIT, NULL, 0) = %s\n", 68 fd, req.nlh.nlmsg_len, 69 (unsigned int) sizeof(req), sprintrc(rc)); 70 } 71 72 int main(void) 73 { 74 skip_if_unavailable("/proc/self/fd/"); 75 76 int fd = create_nl_socket(NETLINK_GENERIC); 77 78 test_nlmsg_type(fd); 79 80 printf("+++ exited with 0 +++\n"); 81 82 return 0; 83 } 84 85 #else 86 87 SKIP_MAIN_UNDEFINED("HAVE_LINUX_GENETLINK_H") 88 89 #endif 90
