1 /*- 2 * Copyright (c) 2012 Cisco Systems, Inc. 3 * All rights reserved. 4 * 5 * This software was developed by Bjoern Zeeb under contract to 6 * Cisco Systems, Inc.. 7 * 8 * Redistribution and use in source and binary forms, with or without 9 * modification, are permitted provided that the following conditions 10 * are met: 11 * 1. Redistributions of source code must retain the above copyright 12 * notice, this list of conditions and the following disclaimer. 13 * 2. Redistributions in binary form must reproduce the above copyright 14 * notice, this list of conditions and the following disclaimer in the 15 * documentation and/or other materials provided with the distribution. 16 * 17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND 18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE 21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS 23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) 24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT 25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY 26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF 27 * SUCH DAMAGE. 28 */ 29 30 /* 31 * Regression test on SO_SETFIB setsockopt(2). 32 * 33 * Check that the expected domain(9) families all handle the socket option 34 * correctly and do proper bounds checks. 35 * 36 * Test plan: 37 * 1. Get system wide number of FIBs from sysctl and convert to index (-= 1). 38 * 2. For each protocol family (INET, INET6, ROUTE and LOCAL) open socketes of 39 * type (STREAM, DGRAM and RAW) as supported. 40 * 3. Do a sequence of -2, -1, 0, .. n, n+1, n+2 SO_SETFIB sockopt calls, 41 * expecting the first two and last two to fail (valid 0 ... n). 42 * 4. Try 3 random numbers. Calculate result based on valid range. 43 * 5. Repeat for next domain family and type from (2) on. 44 */ 45 46 #include <sys/param.h> 47 #include <sys/types.h> 48 #include <sys/socket.h> 49 #include <sys/sysctl.h> 50 51 #include <err.h> 52 #include <errno.h> 53 #include <stdio.h> 54 #include <stdlib.h> 55 #include <string.h> 56 #include <unistd.h> 57 58 static struct t_dom { 59 int domain; 60 const char *name; 61 } t_dom[] = { 62 #ifdef INET6 63 { .domain = PF_INET6, .name = "PF_INET6" }, 64 #endif 65 #ifdef INET 66 { .domain = PF_INET, .name = "PF_INET" }, 67 #endif 68 { .domain = PF_ROUTE, .name = "PF_ROUTE" }, 69 { .domain = PF_LOCAL, .name = "PF_LOCAL" }, 70 }; 71 72 static struct t_type { 73 int type; 74 const char *name; 75 } t_type[] = { 76 { .type = SOCK_STREAM, .name = "SOCK_STREAM" }, 77 { .type = SOCK_DGRAM, .name = "SOCK_DGRAM" }, 78 { .type = SOCK_RAW, .name = "SOCK_RAW" }, 79 }; 80 81 /* 82 * Number of FIBs as read from net.fibs sysctl - 1. Initialize to clear out of 83 * bounds value to not accidentally run on a limited range. 84 */ 85 static int rt_numfibs = -42; 86 87 /* Number of test case. */ 88 static int testno = 1; 89 90 91 /* 92 * Try the setsockopt with given FIB number i on socket s. 93 * Handle result given on error and valid range and errno. 94 */ 95 static void 96 so_setfib(int s, int i, u_int dom, u_int type) 97 { 98 int error; 99 100 error = setsockopt(s, SOL_SOCKET, SO_SETFIB, &i, sizeof(i)); 101 /* For out of bounds we expect an error. */ 102 if (error == -1 && (i < 0 || i > rt_numfibs)) 103 printf("ok %d %s_%s_%d\n", testno, t_dom[dom].name, 104 t_type[type].name, i); 105 else if (error != -1 && (i < 0 || i > rt_numfibs)) 106 printf("not ok %d %s_%s_%d # setsockopt(%d, SOL_SOCKET, " 107 "SO_SETFIB, %d, ..) unexpectedly succeeded\n", testno, 108 t_dom[dom].name, t_type[type].name, i, s, i); 109 else if (error == 0) 110 printf("ok %d %s_%s_%d\n", testno, t_dom[dom].name, 111 t_type[type].name, i); 112 else if (errno != EINVAL) 113 printf("not ok %d %s_%s_%d # setsockopt(%d, SOL_SOCKET, " 114 "SO_SETFIB, %d, ..) unexpected error: %s\n", testno, 115 t_dom[dom].name, t_type[type].name, i, s, i, 116 strerror(errno)); 117 else 118 printf("not ok %d %s_%s_%d\n", testno, t_dom[dom].name, 119 t_type[type].name, i); 120 121 /* Test run done, next please. */ 122 testno++; 123 } 124 125 /* 126 * Main test. Open socket given domain family and type. For each FIB, out of 127 * bounds FIB numbers and 3 random FIB numbers set the socket option. 128 */ 129 static void 130 t(u_int dom, u_int type) 131 { 132 int i, s; 133 134 /* PF_ROUTE only supports RAW socket types, while PF_LOCAL does not. */ 135 if (t_dom[dom].domain == PF_ROUTE && t_type[type].type != SOCK_RAW) 136 return; 137 if (t_dom[dom].domain == PF_LOCAL && t_type[type].type == SOCK_RAW) 138 return; 139 140 /* Open socket for given combination. */ 141 s = socket(t_dom[dom].domain, t_type[type].type, 0); 142 if (s == -1) { 143 printf("not ok %d %s_%s # socket(): %s\n", testno, 144 t_dom[dom].name, t_type[type].name, strerror(errno)); 145 testno++; 146 return; 147 } 148 149 /* Test FIBs -2, -1, 0, .. n, n + 1, n + 2. */ 150 for (i = -2; i <= (rt_numfibs + 2); i++) 151 so_setfib(s, i, dom, type); 152 153 /* Test 3 random FIB numbers. */ 154 for (i = 0; i < 3; i++) 155 so_setfib(s, (int)random(), dom, type); 156 157 /* Close socket. */ 158 close(s); 159 } 160 161 /* 162 * Returns 0 if no program error, 1 on sysctlbyname error. 163 * Test results are communicated by printf("[not ]ok <n> .."). 164 */ 165 int 166 main(int argc __unused, char *argv[] __unused) 167 { 168 u_int i, j; 169 size_t s; 170 171 if (geteuid() != 0) { 172 printf("1..0 # SKIP: must be root\n"); 173 return (0); 174 } 175 176 /* Initialize randomness. */ 177 srandomdev(); 178 179 /* Get number of FIBs supported by kernel. */ 180 s = sizeof(rt_numfibs); 181 if (sysctlbyname("net.fibs", &rt_numfibs, &s, NULL, 0) == -1) 182 err(1, "sysctlbyname(net.fibs, ..)"); 183 184 printf("1..%lu\n", 185 (nitems(t_dom) - 1) * nitems(t_type) * (2 + rt_numfibs + 2 + 3)); 186 187 /* Adjust from number to index. */ 188 rt_numfibs -= 1; 189 190 /* Run tests. */ 191 for (i = 0; i < sizeof(t_dom) / sizeof(struct t_dom); i++) 192 for (j = 0; j < sizeof(t_type) / sizeof(struct t_type); j++) 193 t(i, j); 194 195 return (0); 196 } 197 198 /* end */ 199