1 /* $NetBSD: t_lwproc.c,v 1.7 2015/01/21 15:19:01 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);
ATF_TC_HEAD(makelwp,tc)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
ATF_TC_BODY(makelwp,tc)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);
ATF_TC_HEAD(proccreds,tc)78 ATF_TC_HEAD(proccreds, tc)
79 {
80
81 atf_tc_set_md_var(tc, "descr", "check that procs have different creds");
82 }
83
ATF_TC_BODY(proccreds,tc)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 RZ(rump_pub_lwproc_newlwp(rump_sys_getpid()));
92
93 RZ(rump_pub_lwproc_rfork(RUMP_RFCFDG));
94 l2 = rump_pub_lwproc_curlwp();
95
96 RL(rump_sys_setuid(22));
97 ATF_REQUIRE_EQ(rump_sys_getuid(), 22);
98
99 rump_pub_lwproc_switch(l1);
100 ATF_REQUIRE_EQ(rump_sys_getuid(), 0); /* from parent, proc0 */
101 RL(rump_sys_setuid(11));
102 ATF_REQUIRE_EQ(rump_sys_getuid(), 11);
103
104 rump_pub_lwproc_switch(l2);
105 ATF_REQUIRE_EQ(rump_sys_getuid(), 22);
106 rump_pub_lwproc_newlwp(rump_sys_getpid());
107 ATF_REQUIRE_EQ(rump_sys_getuid(), 22);
108 }
109
110
111 ATF_TC(inherit);
ATF_TC_HEAD(inherit,tc)112 ATF_TC_HEAD(inherit, tc)
113 {
114
115 atf_tc_set_md_var(tc, "descr", "new processes inherit creds from "
116 "parents");
117 }
118
ATF_TC_BODY(inherit,tc)119 ATF_TC_BODY(inherit, tc)
120 {
121
122 rump_init();
123
124 RZ(rump_pub_lwproc_rfork(RUMP_RFCFDG));
125 RL(rump_sys_setuid(66));
126 ATF_REQUIRE_EQ(rump_sys_getuid(), 66);
127
128 RZ(rump_pub_lwproc_rfork(RUMP_RFCFDG));
129 ATF_REQUIRE_EQ(rump_sys_getuid(), 66);
130
131 /* release lwp and proc */
132 rump_pub_lwproc_releaselwp();
133 ATF_REQUIRE_EQ(rump_sys_getuid(), 0);
134 }
135
136 ATF_TC(lwps);
ATF_TC_HEAD(lwps,tc)137 ATF_TC_HEAD(lwps, tc)
138 {
139
140 atf_tc_set_md_var(tc, "descr", "proc can hold many lwps and is "
141 "automatically g/c'd when the last one exits");
142 }
143
144 #define LOOPS 128
ATF_TC_BODY(lwps,tc)145 ATF_TC_BODY(lwps, tc)
146 {
147 struct lwp *l[LOOPS];
148 pid_t mypid;
149 struct lwp *l_orig;
150 int i;
151
152 rump_init();
153
154 RZ(rump_pub_lwproc_rfork(RUMP_RFCFDG));
155 mypid = rump_sys_getpid();
156 RL(rump_sys_setuid(375));
157
158 l_orig = rump_pub_lwproc_curlwp();
159 for (i = 0; i < LOOPS; i++) {
160 mypid = rump_sys_getpid();
161 ATF_REQUIRE(mypid != -1 && mypid != 0);
162 RZ(rump_pub_lwproc_newlwp(mypid));
163 l[i] = rump_pub_lwproc_curlwp();
164 ATF_REQUIRE_EQ(rump_sys_getuid(), 375);
165 }
166
167 rump_pub_lwproc_switch(l_orig);
168 rump_pub_lwproc_releaselwp();
169 for (i = 0; i < LOOPS; i++) {
170 rump_pub_lwproc_switch(l[i]);
171 ATF_REQUIRE_EQ(rump_sys_getpid(), mypid);
172 ATF_REQUIRE_EQ(rump_sys_getuid(), 375);
173 rump_pub_lwproc_releaselwp();
174 ATF_REQUIRE_EQ(rump_sys_getpid(), 1);
175 ATF_REQUIRE_EQ(rump_sys_getuid(), 0);
176 }
177
178 ATF_REQUIRE_EQ(rump_pub_lwproc_newlwp(mypid), ESRCH);
179 }
180
181 ATF_TC(nolwprelease);
ATF_TC_HEAD(nolwprelease,tc)182 ATF_TC_HEAD(nolwprelease, tc)
183 {
184
185 atf_tc_set_md_var(tc, "descr", "check that lwp context is required "
186 "for lwproc_releaselwp()");
187 }
188
ATF_TC_BODY(nolwprelease,tc)189 ATF_TC_BODY(nolwprelease, tc)
190 {
191 int status;
192
193 switch (fork()) {
194 case 0:
195 rump_init();
196 rump_pub_lwproc_releaselwp();
197 atf_tc_fail("survived");
198 break;
199 case -1:
200 atf_tc_fail_errno("fork");
201 break;
202 default:
203 wait(&status);
204 ATF_REQUIRE(WIFSIGNALED(status));
205 ATF_REQUIRE_EQ(WTERMSIG(status), SIGABRT);
206
207 }
208 }
209
210 ATF_TC(nolwp);
ATF_TC_HEAD(nolwp,tc)211 ATF_TC_HEAD(nolwp, tc)
212 {
213
214 atf_tc_set_md_var(tc, "descr", "check that curlwp for an implicit "
215 "context is NULL");
216 }
217
ATF_TC_BODY(nolwp,tc)218 ATF_TC_BODY(nolwp, tc)
219 {
220
221 rump_init();
222 ATF_REQUIRE_EQ(rump_pub_lwproc_curlwp(), NULL);
223 }
224
225 ATF_TC(nullswitch);
ATF_TC_HEAD(nullswitch,tc)226 ATF_TC_HEAD(nullswitch, tc)
227 {
228
229 atf_tc_set_md_var(tc, "descr", "check that switching to NULL marks "
230 "current lwp as not running");
231 }
232
ATF_TC_BODY(nullswitch,tc)233 ATF_TC_BODY(nullswitch, tc)
234 {
235 struct lwp *l;
236
237 rump_init();
238 RZ(rump_pub_lwproc_newlwp(0));
239 l = rump_pub_lwproc_curlwp();
240 rump_pub_lwproc_switch(NULL);
241 /* if remains LP_RUNNING, next call will panic */
242 rump_pub_lwproc_switch(l);
243 }
244
245 ATF_TC(rfork);
ATF_TC_HEAD(rfork,tc)246 ATF_TC_HEAD(rfork, tc)
247 {
248
249 atf_tc_set_md_var(tc, "descr", "check that fork shares fd's");
250 }
251
ATF_TC_BODY(rfork,tc)252 ATF_TC_BODY(rfork, tc)
253 {
254 struct stat sb;
255 struct lwp *l, *l2;
256 int fd;
257
258 RZ(rump_init());
259
260 ATF_REQUIRE_EQ(rump_pub_lwproc_rfork(RUMP_RFFDG|RUMP_RFCFDG), EINVAL);
261
262 RZ(rump_pub_lwproc_rfork(0));
263 l = rump_pub_lwproc_curlwp();
264
265 RL(fd = rump_sys_open("/file", O_RDWR | O_CREAT, 0777));
266
267 /* ok, first check rfork(RUMP_RFCFDG) does *not* preserve fd's */
268 RZ(rump_pub_lwproc_rfork(RUMP_RFCFDG));
269 ATF_REQUIRE_ERRNO(EBADF, rump_sys_write(fd, &fd, sizeof(fd)) == -1);
270
271 /* then check that rfork(0) does */
272 rump_pub_lwproc_switch(l);
273 RZ(rump_pub_lwproc_rfork(0));
274 ATF_REQUIRE_EQ(rump_sys_write(fd, &fd, sizeof(fd)), sizeof(fd));
275 RL(rump_sys_fstat(fd, &sb));
276 l2 = rump_pub_lwproc_curlwp();
277
278 /*
279 * check that the shared fd table is really shared by
280 * closing fd in parent
281 */
282 rump_pub_lwproc_switch(l);
283 RL(rump_sys_close(fd));
284 rump_pub_lwproc_switch(l2);
285 ATF_REQUIRE_ERRNO(EBADF, rump_sys_fstat(fd, &sb) == -1);
286
287 /* redo, this time copying the fd table instead of sharing it */
288 rump_pub_lwproc_releaselwp();
289 rump_pub_lwproc_switch(l);
290 RL(fd = rump_sys_open("/file", O_RDWR, 0777));
291 RZ(rump_pub_lwproc_rfork(RUMP_RFFDG));
292 ATF_REQUIRE_EQ(rump_sys_write(fd, &fd, sizeof(fd)), sizeof(fd));
293 RL(rump_sys_fstat(fd, &sb));
294 l2 = rump_pub_lwproc_curlwp();
295
296 /* check that the fd table is copied */
297 rump_pub_lwproc_switch(l);
298 RL(rump_sys_close(fd));
299 rump_pub_lwproc_switch(l2);
300 RL(rump_sys_fstat(fd, &sb));
301 ATF_REQUIRE_EQ(sb.st_size, sizeof(fd));
302 }
303
ATF_TP_ADD_TCS(tp)304 ATF_TP_ADD_TCS(tp)
305 {
306
307 ATF_TP_ADD_TC(tp, makelwp);
308 ATF_TP_ADD_TC(tp, proccreds);
309 ATF_TP_ADD_TC(tp, inherit);
310 ATF_TP_ADD_TC(tp, lwps);
311 ATF_TP_ADD_TC(tp, nolwprelease);
312 ATF_TP_ADD_TC(tp, nolwp);
313 ATF_TP_ADD_TC(tp, nullswitch);
314 ATF_TP_ADD_TC(tp, rfork);
315
316 return atf_no_error();
317 }
318