1 /* $NetBSD: t_lwproc.c,v 1.5 2011/01/02 12:58:17 pooka Exp $ */ 2 3 /* 4 * Copyright (c) 2010 The NetBSD Foundation, Inc. 5 * All rights reserved. 6 * 7 * Redistribution and use in source and binary forms, with or without 8 * modification, are permitted provided that the following conditions 9 * are met: 10 * 1. Redistributions of source code must retain the above copyright 11 * notice, this list of conditions and the following disclaimer. 12 * 2. Redistributions in binary form must reproduce the above copyright 13 * notice, this list of conditions and the following disclaimer in the 14 * documentation and/or other materials provided with the distribution. 15 * 16 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND 17 * CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, 18 * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF 19 * MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. 20 * IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS BE LIABLE FOR ANY 21 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL 22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE 23 * GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 24 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER 25 * IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR 26 * OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN 27 * IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 28 */ 29 30 #include <sys/types.h> 31 #include <sys/wait.h> 32 33 #include <rump/rump.h> 34 #include <rump/rump_syscalls.h> 35 36 #include <atf-c.h> 37 #include <err.h> 38 #include <errno.h> 39 #include <fcntl.h> 40 #include <stdio.h> 41 #include <stdlib.h> 42 #include <string.h> 43 #include <unistd.h> 44 #include <util.h> 45 46 #include "../../h_macros.h" 47 48 ATF_TC(makelwp); 49 ATF_TC_HEAD(makelwp, tc) 50 { 51 52 atf_tc_set_md_var(tc, "descr", "tests that lwps can be attached to " 53 "processes"); 54 } 55 56 ATF_TC_BODY(makelwp, tc) 57 { 58 struct lwp *l; 59 pid_t pid; 60 61 rump_init(); 62 RZ(rump_pub_lwproc_newlwp(0)); 63 ATF_REQUIRE_EQ(rump_pub_lwproc_newlwp(37), ESRCH); 64 l = rump_pub_lwproc_curlwp(); 65 66 RZ(rump_pub_lwproc_rfork(RUMP_RFCFDG)); 67 ATF_REQUIRE(rump_pub_lwproc_curlwp() != l); 68 l = rump_pub_lwproc_curlwp(); 69 70 RZ(rump_pub_lwproc_newlwp(rump_sys_getpid())); 71 ATF_REQUIRE(rump_pub_lwproc_curlwp() != l); 72 73 pid = rump_sys_getpid(); 74 ATF_REQUIRE(pid != -1 && pid != 0); 75 } 76 77 ATF_TC(proccreds); 78 ATF_TC_HEAD(proccreds, tc) 79 { 80 81 atf_tc_set_md_var(tc, "descr", "check that procs have different creds"); 82 } 83 84 ATF_TC_BODY(proccreds, tc) 85 { 86 struct lwp *l1, *l2; 87 88 rump_init(); 89 RZ(rump_pub_lwproc_rfork(RUMP_RFCFDG)); 90 l1 = rump_pub_lwproc_curlwp(); 91 92 RZ(rump_pub_lwproc_rfork(RUMP_RFCFDG)); 93 l2 = rump_pub_lwproc_curlwp(); 94 95 RL(rump_sys_setuid(22)); 96 ATF_REQUIRE_EQ(rump_sys_getuid(), 22); 97 98 rump_pub_lwproc_switch(l1); 99 ATF_REQUIRE_EQ(rump_sys_getuid(), 0); /* from parent, proc0 */ 100 RL(rump_sys_setuid(11)); 101 ATF_REQUIRE_EQ(rump_sys_getuid(), 11); 102 103 rump_pub_lwproc_switch(l2); 104 ATF_REQUIRE_EQ(rump_sys_getuid(), 22); 105 rump_pub_lwproc_newlwp(rump_sys_getpid()); 106 ATF_REQUIRE_EQ(rump_sys_getuid(), 22); 107 } 108 109 110 ATF_TC(inherit); 111 ATF_TC_HEAD(inherit, tc) 112 { 113 114 atf_tc_set_md_var(tc, "descr", "new processes inherit creds from " 115 "parents"); 116 } 117 118 ATF_TC_BODY(inherit, tc) 119 { 120 121 rump_init(); 122 123 RZ(rump_pub_lwproc_rfork(RUMP_RFCFDG)); 124 RL(rump_sys_setuid(66)); 125 ATF_REQUIRE_EQ(rump_sys_getuid(), 66); 126 127 RZ(rump_pub_lwproc_rfork(RUMP_RFCFDG)); 128 ATF_REQUIRE_EQ(rump_sys_getuid(), 66); 129 130 /* release lwp and proc */ 131 rump_pub_lwproc_releaselwp(); 132 ATF_REQUIRE_EQ(rump_sys_getuid(), 0); 133 } 134 135 ATF_TC(lwps); 136 ATF_TC_HEAD(lwps, tc) 137 { 138 139 atf_tc_set_md_var(tc, "descr", "proc can hold many lwps and is " 140 "automatically g/c'd when the last one exits"); 141 } 142 143 #define LOOPS 128 144 ATF_TC_BODY(lwps, tc) 145 { 146 struct lwp *l[LOOPS]; 147 pid_t mypid; 148 struct lwp *l_orig; 149 int i; 150 151 rump_init(); 152 153 RZ(rump_pub_lwproc_rfork(RUMP_RFCFDG)); 154 mypid = rump_sys_getpid(); 155 RL(rump_sys_setuid(375)); 156 157 l_orig = rump_pub_lwproc_curlwp(); 158 for (i = 0; i < LOOPS; i++) { 159 mypid = rump_sys_getpid(); 160 ATF_REQUIRE(mypid != -1 && mypid != 0); 161 RZ(rump_pub_lwproc_newlwp(mypid)); 162 l[i] = rump_pub_lwproc_curlwp(); 163 ATF_REQUIRE_EQ(rump_sys_getuid(), 375); 164 } 165 166 rump_pub_lwproc_switch(l_orig); 167 rump_pub_lwproc_releaselwp(); 168 for (i = 0; i < LOOPS; i++) { 169 rump_pub_lwproc_switch(l[i]); 170 ATF_REQUIRE_EQ(rump_sys_getpid(), mypid); 171 ATF_REQUIRE_EQ(rump_sys_getuid(), 375); 172 rump_pub_lwproc_releaselwp(); 173 ATF_REQUIRE_EQ(rump_sys_getpid(), 1); 174 ATF_REQUIRE_EQ(rump_sys_getuid(), 0); 175 } 176 177 ATF_REQUIRE_EQ(rump_pub_lwproc_newlwp(mypid), ESRCH); 178 } 179 180 ATF_TC(nolwprelease); 181 ATF_TC_HEAD(nolwprelease, tc) 182 { 183 184 atf_tc_set_md_var(tc, "descr", "check that lwp context is required " 185 "for lwproc_releaselwp()"); 186 } 187 188 ATF_TC_BODY(nolwprelease, tc) 189 { 190 int status; 191 192 switch (fork()) { 193 case 0: 194 rump_init(); 195 rump_pub_lwproc_releaselwp(); 196 atf_tc_fail("survived"); 197 break; 198 case -1: 199 atf_tc_fail_errno("fork"); 200 break; 201 default: 202 wait(&status); 203 ATF_REQUIRE(WIFSIGNALED(status)); 204 ATF_REQUIRE_EQ(WTERMSIG(status), SIGABRT); 205 206 } 207 } 208 209 ATF_TC(nolwp); 210 ATF_TC_HEAD(nolwp, tc) 211 { 212 213 atf_tc_set_md_var(tc, "descr", "check that curlwp for an implicit " 214 "context is NULL"); 215 } 216 217 ATF_TC_BODY(nolwp, tc) 218 { 219 220 rump_init(); 221 ATF_REQUIRE_EQ(rump_pub_lwproc_curlwp(), NULL); 222 } 223 224 ATF_TC(nullswitch); 225 ATF_TC_HEAD(nullswitch, tc) 226 { 227 228 atf_tc_set_md_var(tc, "descr", "check that switching to NULL marks " 229 "current lwp as not running"); 230 } 231 232 ATF_TC_BODY(nullswitch, tc) 233 { 234 struct lwp *l; 235 236 rump_init(); 237 RZ(rump_pub_lwproc_newlwp(0)); 238 l = rump_pub_lwproc_curlwp(); 239 rump_pub_lwproc_switch(NULL); 240 /* if remains LP_RUNNING, next call will panic */ 241 rump_pub_lwproc_switch(l); 242 } 243 244 ATF_TC(rfork); 245 ATF_TC_HEAD(rfork, tc) 246 { 247 248 atf_tc_set_md_var(tc, "descr", "check that fork shares fd's"); 249 } 250 251 ATF_TC_BODY(rfork, tc) 252 { 253 struct stat sb; 254 struct lwp *l, *l2; 255 int fd; 256 257 RZ(rump_init()); 258 259 ATF_REQUIRE_EQ(rump_pub_lwproc_rfork(RUMP_RFFDG|RUMP_RFCFDG), EINVAL); 260 261 RZ(rump_pub_lwproc_rfork(0)); 262 l = rump_pub_lwproc_curlwp(); 263 264 RL(fd = rump_sys_open("/file", O_RDWR | O_CREAT, 0777)); 265 266 /* ok, first check rfork(RUMP_RFCFDG) does *not* preserve fd's */ 267 RZ(rump_pub_lwproc_rfork(RUMP_RFCFDG)); 268 ATF_REQUIRE_ERRNO(EBADF, rump_sys_write(fd, &fd, sizeof(fd)) == -1); 269 270 /* then check that rfork(0) does */ 271 rump_pub_lwproc_switch(l); 272 RZ(rump_pub_lwproc_rfork(0)); 273 ATF_REQUIRE_EQ(rump_sys_write(fd, &fd, sizeof(fd)), sizeof(fd)); 274 RL(rump_sys_fstat(fd, &sb)); 275 l2 = rump_pub_lwproc_curlwp(); 276 277 /* 278 * check that the shared fd table is really shared by 279 * closing fd in parent 280 */ 281 rump_pub_lwproc_switch(l); 282 RL(rump_sys_close(fd)); 283 rump_pub_lwproc_switch(l2); 284 ATF_REQUIRE_ERRNO(EBADF, rump_sys_fstat(fd, &sb) == -1); 285 286 /* redo, this time copying the fd table instead of sharing it */ 287 rump_pub_lwproc_releaselwp(); 288 rump_pub_lwproc_switch(l); 289 RL(fd = rump_sys_open("/file", O_RDWR, 0777)); 290 RZ(rump_pub_lwproc_rfork(RUMP_RFFDG)); 291 ATF_REQUIRE_EQ(rump_sys_write(fd, &fd, sizeof(fd)), sizeof(fd)); 292 RL(rump_sys_fstat(fd, &sb)); 293 l2 = rump_pub_lwproc_curlwp(); 294 295 /* check that the fd table is copied */ 296 rump_pub_lwproc_switch(l); 297 RL(rump_sys_close(fd)); 298 rump_pub_lwproc_switch(l2); 299 RL(rump_sys_fstat(fd, &sb)); 300 ATF_REQUIRE_EQ(sb.st_size, sizeof(fd)); 301 } 302 303 ATF_TP_ADD_TCS(tp) 304 { 305 306 ATF_TP_ADD_TC(tp, makelwp); 307 ATF_TP_ADD_TC(tp, proccreds); 308 ATF_TP_ADD_TC(tp, inherit); 309 ATF_TP_ADD_TC(tp, lwps); 310 ATF_TP_ADD_TC(tp, nolwprelease); 311 ATF_TP_ADD_TC(tp, nolwp); 312 ATF_TP_ADD_TC(tp, nullswitch); 313 ATF_TP_ADD_TC(tp, rfork); 314 315 return atf_no_error(); 316 } 317