1 /* 2 * Copyright (c) 2017 JingPiao Chen <chenjingpiao (at) 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 #include <stdio.h> 30 #include <string.h> 31 #include <unistd.h> 32 #include <sys/socket.h> 33 #include "test_netlink.h" 34 #include <linux/selinux_netlink.h> 35 36 static void 37 test_nlmsg_type(const int fd) 38 { 39 long rc; 40 struct nlmsghdr nlh = { 41 .nlmsg_len = sizeof(nlh), 42 .nlmsg_type = SELNL_MSG_SETENFORCE, 43 .nlmsg_flags = NLM_F_REQUEST, 44 }; 45 46 rc = sendto(fd, &nlh, sizeof(nlh), MSG_DONTWAIT, NULL, 0); 47 printf("sendto(%d, {len=%u, type=SELNL_MSG_SETENFORCE" 48 ", flags=NLM_F_REQUEST, seq=0, pid=0}" 49 ", %u, MSG_DONTWAIT, NULL, 0) = %s\n", 50 fd, nlh.nlmsg_len, (unsigned) sizeof(nlh), sprintrc(rc)); 51 } 52 53 static void 54 test_selnl_msg_unspec(const int fd) 55 { 56 void *const nlh0 = tail_alloc(NLMSG_HDRLEN); 57 58 TEST_NETLINK_(fd, nlh0, 59 0xffff, "0xffff /* SELNL_MSG_??? */", 60 NLM_F_REQUEST, "NLM_F_REQUEST", 61 4, "1234", 4, 62 printf("\"\\x31\\x32\\x33\\x34\"")); 63 } 64 65 static void 66 test_selnl_msg_setenforce(const int fd) 67 { 68 void *const nlh0 = tail_alloc(NLMSG_HDRLEN); 69 70 static const struct selnl_msg_setenforce msg = { 71 .val = 0xfbdcdfab 72 }; 73 TEST_NETLINK_OBJECT(fd, nlh0, 74 SELNL_MSG_SETENFORCE, NLM_F_REQUEST, msg, 75 PRINT_FIELD_D("{", msg, val); 76 printf("}")); 77 } 78 79 static void 80 test_selnl_msg_policyload(const int fd) 81 { 82 void *const nlh0 = tail_alloc(NLMSG_HDRLEN); 83 84 static const struct selnl_msg_policyload msg = { 85 .seqno = 0xabdcfabc 86 }; 87 TEST_NETLINK_OBJECT(fd, nlh0, 88 SELNL_MSG_POLICYLOAD, NLM_F_REQUEST, msg, 89 PRINT_FIELD_U("{", msg, seqno); 90 printf("}")); 91 } 92 93 int main(void) 94 { 95 skip_if_unavailable("/proc/self/fd/"); 96 97 int fd = create_nl_socket(NETLINK_SELINUX); 98 99 test_nlmsg_type(fd); 100 test_selnl_msg_unspec(fd); 101 test_selnl_msg_setenforce(fd); 102 test_selnl_msg_policyload(fd); 103 104 printf("+++ exited with 0 +++\n"); 105 106 return 0; 107 } 108
