1 /* $NetBSD: t_mmap.c,v 1.12 2017/01/16 16:31:05 christos Exp $ */
2
3 /*-
4 * Copyright (c) 2011 The NetBSD Foundation, Inc.
5 * All rights reserved.
6 *
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jukka Ruohonen.
9 *
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
12 * are met:
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
18 *
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
30 */
31
32 /*-
33 * Copyright (c)2004 YAMAMOTO Takashi,
34 * All rights reserved.
35 *
36 * Redistribution and use in source and binary forms, with or without
37 * modification, are permitted provided that the following conditions
38 * are met:
39 * 1. Redistributions of source code must retain the above copyright
40 * notice, this list of conditions and the following disclaimer.
41 * 2. Redistributions in binary form must reproduce the above copyright
42 * notice, this list of conditions and the following disclaimer in the
43 * documentation and/or other materials provided with the distribution.
44 *
45 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
46 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
47 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
48 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
49 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
50 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
51 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
52 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
53 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
54 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
55 * SUCH DAMAGE.
56 */
57 #include <sys/cdefs.h>
58 __RCSID("$NetBSD: t_mmap.c,v 1.12 2017/01/16 16:31:05 christos Exp $");
59
60 #include <sys/param.h>
61 #include <sys/disklabel.h>
62 #include <sys/mman.h>
63 #include <sys/stat.h>
64 #include <sys/socket.h>
65 #include <sys/sysctl.h>
66 #include <sys/wait.h>
67
68 #include <atf-c.h>
69 #include <errno.h>
70 #include <fcntl.h>
71 #include <signal.h>
72 #include <stdio.h>
73 #include <stdlib.h>
74 #include <string.h>
75 #include <unistd.h>
76 #include <paths.h>
77 #ifdef __FreeBSD__
78 #include <stdint.h>
79 #endif
80
81 static long page = 0;
82 static char path[] = "mmap";
83 static void map_check(void *, int);
84 static void map_sighandler(int);
85 static void testloan(void *, void *, char, int);
86
87 #define BUFSIZE (32 * 1024) /* enough size to trigger sosend_loan */
88
89 static void
map_check(void * map,int flag)90 map_check(void *map, int flag)
91 {
92
93 if (flag != 0) {
94 ATF_REQUIRE(map == MAP_FAILED);
95 return;
96 }
97
98 ATF_REQUIRE(map != MAP_FAILED);
99 ATF_REQUIRE(munmap(map, page) == 0);
100 }
101
102 void
testloan(void * vp,void * vp2,char pat,int docheck)103 testloan(void *vp, void *vp2, char pat, int docheck)
104 {
105 char buf[BUFSIZE];
106 char backup[BUFSIZE];
107 ssize_t nwritten;
108 ssize_t nread;
109 int fds[2];
110 int val;
111
112 val = BUFSIZE;
113
114 if (docheck != 0)
115 (void)memcpy(backup, vp, BUFSIZE);
116
117 if (socketpair(AF_LOCAL, SOCK_STREAM, PF_UNSPEC, fds) != 0)
118 atf_tc_fail("socketpair() failed");
119
120 val = BUFSIZE;
121
122 if (setsockopt(fds[1], SOL_SOCKET, SO_RCVBUF, &val, sizeof(val)) != 0)
123 atf_tc_fail("setsockopt() failed, SO_RCVBUF");
124
125 val = BUFSIZE;
126
127 if (setsockopt(fds[0], SOL_SOCKET, SO_SNDBUF, &val, sizeof(val)) != 0)
128 atf_tc_fail("setsockopt() failed, SO_SNDBUF");
129
130 if (fcntl(fds[0], F_SETFL, O_NONBLOCK) != 0)
131 atf_tc_fail("fcntl() failed");
132
133 nwritten = write(fds[0], (char *)vp + page, BUFSIZE - page);
134
135 if (nwritten == -1)
136 atf_tc_fail("write() failed");
137
138 /* Break loan. */
139 (void)memset(vp2, pat, BUFSIZE);
140
141 nread = read(fds[1], buf + page, BUFSIZE - page);
142
143 if (nread == -1)
144 atf_tc_fail("read() failed");
145
146 if (nread != nwritten)
147 atf_tc_fail("too short read");
148
149 if (docheck != 0 && memcmp(backup, buf + page, nread) != 0)
150 atf_tc_fail("data mismatch");
151
152 ATF_REQUIRE(close(fds[0]) == 0);
153 ATF_REQUIRE(close(fds[1]) == 0);
154 }
155
156 static void
map_sighandler(int signo)157 map_sighandler(int signo)
158 {
159 _exit(signo);
160 }
161
162 #ifdef __NetBSD__
163 ATF_TC(mmap_block);
ATF_TC_HEAD(mmap_block,tc)164 ATF_TC_HEAD(mmap_block, tc)
165 {
166 atf_tc_set_md_var(tc, "descr", "Test mmap(2) with a block device");
167 atf_tc_set_md_var(tc, "require.user", "root");
168 }
169
ATF_TC_BODY(mmap_block,tc)170 ATF_TC_BODY(mmap_block, tc)
171 {
172 static const int mib[] = { CTL_HW, HW_DISKNAMES };
173 static const unsigned int miblen = __arraycount(mib);
174 char *map, *dk, *drives, dev[PATH_MAX];
175 size_t len;
176 int fd = -1;
177
178 atf_tc_skip("The test case causes a panic (PR kern/38889, kern/46592)");
179
180 ATF_REQUIRE(sysctl(mib, miblen, NULL, &len, NULL, 0) == 0);
181 drives = malloc(len);
182 ATF_REQUIRE(drives != NULL);
183 ATF_REQUIRE(sysctl(mib, miblen, drives, &len, NULL, 0) == 0);
184 for (dk = strtok(drives, " "); dk != NULL; dk = strtok(NULL, " ")) {
185 sprintf(dev, _PATH_DEV "%s%c", dk, 'a'+RAW_PART);
186 fprintf(stderr, "trying: %s\n", dev);
187
188 if ((fd = open(dev, O_RDONLY)) >= 0) {
189 (void)fprintf(stderr, "using %s\n", dev);
190 break;
191 }
192 }
193 free(drives);
194
195 if (fd < 0)
196 atf_tc_skip("failed to find suitable block device");
197
198 map = mmap(NULL, 4096, PROT_READ, MAP_FILE, fd, 0);
199 ATF_REQUIRE(map != MAP_FAILED);
200
201 (void)fprintf(stderr, "first byte %x\n", *map);
202 ATF_REQUIRE(close(fd) == 0);
203 (void)fprintf(stderr, "first byte %x\n", *map);
204
205 ATF_REQUIRE(munmap(map, 4096) == 0);
206 }
207 #endif
208
209 ATF_TC(mmap_err);
ATF_TC_HEAD(mmap_err,tc)210 ATF_TC_HEAD(mmap_err, tc)
211 {
212 atf_tc_set_md_var(tc, "descr", "Test error conditions of mmap(2)");
213 }
214
ATF_TC_BODY(mmap_err,tc)215 ATF_TC_BODY(mmap_err, tc)
216 {
217 size_t addr = SIZE_MAX;
218 void *map;
219
220 errno = 0;
221 map = mmap(NULL, 3, PROT_READ, MAP_FILE|MAP_PRIVATE, -1, 0);
222
223 ATF_REQUIRE(map == MAP_FAILED);
224 ATF_REQUIRE(errno == EBADF);
225
226 errno = 0;
227 map = mmap(&addr, page, PROT_READ, MAP_FIXED|MAP_PRIVATE, -1, 0);
228
229 ATF_REQUIRE(map == MAP_FAILED);
230 ATF_REQUIRE(errno == EINVAL);
231
232 errno = 0;
233 map = mmap(NULL, page, PROT_READ, MAP_ANON|MAP_PRIVATE, INT_MAX, 0);
234
235 ATF_REQUIRE(map == MAP_FAILED);
236 ATF_REQUIRE(errno == EINVAL);
237 }
238
239 ATF_TC_WITH_CLEANUP(mmap_loan);
ATF_TC_HEAD(mmap_loan,tc)240 ATF_TC_HEAD(mmap_loan, tc)
241 {
242 atf_tc_set_md_var(tc, "descr", "Test uvm page loanout with mmap(2)");
243 }
244
ATF_TC_BODY(mmap_loan,tc)245 ATF_TC_BODY(mmap_loan, tc)
246 {
247 char buf[BUFSIZE];
248 char *vp, *vp2;
249 int fd;
250
251 fd = open(path, O_RDWR | O_CREAT, 0600);
252 ATF_REQUIRE(fd >= 0);
253
254 (void)memset(buf, 'x', sizeof(buf));
255 (void)write(fd, buf, sizeof(buf));
256
257 vp = mmap(NULL, BUFSIZE, PROT_READ | PROT_WRITE,
258 MAP_FILE | MAP_PRIVATE, fd, 0);
259
260 ATF_REQUIRE(vp != MAP_FAILED);
261
262 vp2 = vp;
263
264 testloan(vp, vp2, 'A', 0);
265 testloan(vp, vp2, 'B', 1);
266
267 ATF_REQUIRE(munmap(vp, BUFSIZE) == 0);
268
269 vp = mmap(NULL, BUFSIZE, PROT_READ | PROT_WRITE,
270 MAP_FILE | MAP_SHARED, fd, 0);
271
272 vp2 = mmap(NULL, BUFSIZE, PROT_READ | PROT_WRITE,
273 MAP_FILE | MAP_SHARED, fd, 0);
274
275 ATF_REQUIRE(vp != MAP_FAILED);
276 ATF_REQUIRE(vp2 != MAP_FAILED);
277
278 testloan(vp, vp2, 'E', 1);
279
280 ATF_REQUIRE(munmap(vp, BUFSIZE) == 0);
281 ATF_REQUIRE(munmap(vp2, BUFSIZE) == 0);
282 }
283
ATF_TC_CLEANUP(mmap_loan,tc)284 ATF_TC_CLEANUP(mmap_loan, tc)
285 {
286 (void)unlink(path);
287 }
288
289 ATF_TC_WITH_CLEANUP(mmap_prot_1);
ATF_TC_HEAD(mmap_prot_1,tc)290 ATF_TC_HEAD(mmap_prot_1, tc)
291 {
292 atf_tc_set_md_var(tc, "descr", "Test mmap(2) protections, #1");
293 }
294
ATF_TC_BODY(mmap_prot_1,tc)295 ATF_TC_BODY(mmap_prot_1, tc)
296 {
297 void *map;
298 int fd;
299
300 /*
301 * Open a file write-only and try to
302 * map it read-only. This should fail.
303 */
304 fd = open(path, O_WRONLY | O_CREAT, 0700);
305
306 if (fd < 0)
307 return;
308
309 ATF_REQUIRE(write(fd, "XXX", 3) == 3);
310
311 map = mmap(NULL, 3, PROT_READ, MAP_FILE|MAP_PRIVATE, fd, 0);
312 map_check(map, 1);
313
314 map = mmap(NULL, 3, PROT_WRITE, MAP_FILE|MAP_PRIVATE, fd, 0);
315 map_check(map, 0);
316
317 ATF_REQUIRE(close(fd) == 0);
318 }
319
ATF_TC_CLEANUP(mmap_prot_1,tc)320 ATF_TC_CLEANUP(mmap_prot_1, tc)
321 {
322 (void)unlink(path);
323 }
324
325 ATF_TC(mmap_prot_2);
ATF_TC_HEAD(mmap_prot_2,tc)326 ATF_TC_HEAD(mmap_prot_2, tc)
327 {
328 atf_tc_set_md_var(tc, "descr", "Test mmap(2) protections, #2");
329 }
330
ATF_TC_BODY(mmap_prot_2,tc)331 ATF_TC_BODY(mmap_prot_2, tc)
332 {
333 char buf[2];
334 void *map;
335 pid_t pid;
336 int sta;
337
338 /*
339 * Make a PROT_NONE mapping and try to access it.
340 * If we catch a SIGSEGV, all works as expected.
341 */
342 map = mmap(NULL, page, PROT_NONE, MAP_ANON|MAP_PRIVATE, -1, 0);
343 ATF_REQUIRE(map != MAP_FAILED);
344
345 pid = fork();
346 ATF_REQUIRE(pid >= 0);
347
348 if (pid == 0) {
349 ATF_REQUIRE(signal(SIGSEGV, map_sighandler) != SIG_ERR);
350 ATF_REQUIRE(strlcpy(buf, map, sizeof(buf)) != 0);
351 }
352
353 (void)wait(&sta);
354
355 ATF_REQUIRE(WIFEXITED(sta) != 0);
356 ATF_REQUIRE(WEXITSTATUS(sta) == SIGSEGV);
357 ATF_REQUIRE(munmap(map, page) == 0);
358 }
359
360 ATF_TC_WITH_CLEANUP(mmap_prot_3);
ATF_TC_HEAD(mmap_prot_3,tc)361 ATF_TC_HEAD(mmap_prot_3, tc)
362 {
363 atf_tc_set_md_var(tc, "descr", "Test mmap(2) protections, #3");
364 }
365
ATF_TC_BODY(mmap_prot_3,tc)366 ATF_TC_BODY(mmap_prot_3, tc)
367 {
368 char buf[2];
369 int fd, sta;
370 void *map;
371 pid_t pid;
372
373 /*
374 * Open a file, change the permissions
375 * to read-only, and try to map it as
376 * PROT_NONE. This should succeed, but
377 * the access should generate SIGSEGV.
378 */
379 fd = open(path, O_RDWR | O_CREAT, 0700);
380
381 if (fd < 0)
382 #ifdef __FreeBSD__
383 atf_tc_skip("opening %s failed; skipping testcase: %s",
384 path, strerror(errno));
385 #else
386 return;
387 #endif
388
389 ATF_REQUIRE(write(fd, "XXX", 3) == 3);
390 ATF_REQUIRE(close(fd) == 0);
391 ATF_REQUIRE(chmod(path, 0444) == 0);
392
393 fd = open(path, O_RDONLY);
394 ATF_REQUIRE(fd != -1);
395
396 map = mmap(NULL, 3, PROT_NONE, MAP_FILE | MAP_SHARED, fd, 0);
397 ATF_REQUIRE(map != MAP_FAILED);
398
399 pid = fork();
400
401 ATF_REQUIRE(pid >= 0);
402
403 if (pid == 0) {
404 ATF_REQUIRE(signal(SIGSEGV, map_sighandler) != SIG_ERR);
405 ATF_REQUIRE(strlcpy(buf, map, sizeof(buf)) != 0);
406 }
407
408 (void)wait(&sta);
409
410 ATF_REQUIRE(WIFEXITED(sta) != 0);
411 ATF_REQUIRE(WEXITSTATUS(sta) == SIGSEGV);
412 ATF_REQUIRE(munmap(map, 3) == 0);
413 #ifdef __FreeBSD__
414 (void)close(fd);
415 #endif
416 }
417
ATF_TC_CLEANUP(mmap_prot_3,tc)418 ATF_TC_CLEANUP(mmap_prot_3, tc)
419 {
420 (void)unlink(path);
421 }
422
423 ATF_TC_WITH_CLEANUP(mmap_truncate);
ATF_TC_HEAD(mmap_truncate,tc)424 ATF_TC_HEAD(mmap_truncate, tc)
425 {
426 atf_tc_set_md_var(tc, "descr", "Test mmap(2) and ftruncate(2)");
427 }
428
ATF_TC_BODY(mmap_truncate,tc)429 ATF_TC_BODY(mmap_truncate, tc)
430 {
431 char *map;
432 long i;
433 int fd;
434
435 fd = open(path, O_RDWR | O_CREAT, 0700);
436
437 if (fd < 0)
438 return;
439
440 /*
441 * See that ftruncate(2) works
442 * while the file is mapped.
443 */
444 ATF_REQUIRE(ftruncate(fd, page) == 0);
445
446 map = mmap(NULL, page, PROT_READ | PROT_WRITE, MAP_FILE|MAP_PRIVATE,
447 fd, 0);
448 ATF_REQUIRE(map != MAP_FAILED);
449
450 for (i = 0; i < page; i++)
451 map[i] = 'x';
452
453 ATF_REQUIRE(ftruncate(fd, 0) == 0);
454 ATF_REQUIRE(ftruncate(fd, page / 8) == 0);
455 ATF_REQUIRE(ftruncate(fd, page / 4) == 0);
456 ATF_REQUIRE(ftruncate(fd, page / 2) == 0);
457 ATF_REQUIRE(ftruncate(fd, page / 12) == 0);
458 ATF_REQUIRE(ftruncate(fd, page / 64) == 0);
459
460 (void)munmap(map, page);
461 ATF_REQUIRE(close(fd) == 0);
462 }
463
ATF_TC_CLEANUP(mmap_truncate,tc)464 ATF_TC_CLEANUP(mmap_truncate, tc)
465 {
466 (void)unlink(path);
467 }
468
469 ATF_TC_WITH_CLEANUP(mmap_truncate_signal);
ATF_TC_HEAD(mmap_truncate_signal,tc)470 ATF_TC_HEAD(mmap_truncate_signal, tc)
471 {
472 atf_tc_set_md_var(tc, "descr",
473 "Test mmap(2) ftruncate(2) causing signal");
474 }
475
ATF_TC_BODY(mmap_truncate_signal,tc)476 ATF_TC_BODY(mmap_truncate_signal, tc)
477 {
478 char *map;
479 long i;
480 int fd, sta;
481 pid_t pid;
482
483 fd = open(path, O_RDWR | O_CREAT, 0700);
484
485 if (fd < 0)
486 return;
487
488 ATF_REQUIRE(write(fd, "foo\n", 5) == 5);
489
490 map = mmap(NULL, page, PROT_READ, MAP_FILE|MAP_PRIVATE, fd, 0);
491 ATF_REQUIRE(map != MAP_FAILED);
492
493 sta = 0;
494 for (i = 0; i < 5; i++)
495 sta += map[i];
496 ATF_REQUIRE(sta == 334);
497
498 ATF_REQUIRE(ftruncate(fd, 0) == 0);
499 pid = fork();
500 ATF_REQUIRE(pid >= 0);
501
502 if (pid == 0) {
503 ATF_REQUIRE(signal(SIGBUS, map_sighandler) != SIG_ERR);
504 ATF_REQUIRE(signal(SIGSEGV, map_sighandler) != SIG_ERR);
505 sta = 0;
506 for (i = 0; i < page; i++)
507 sta += map[i];
508 /* child never will get this far, but the compiler will
509 not know, so better use the values calculated to
510 prevent the access to be optimized out */
511 ATF_REQUIRE(i == 0);
512 ATF_REQUIRE(sta == 0);
513 (void)munmap(map, page);
514 (void)close(fd);
515 return;
516 }
517
518 (void)wait(&sta);
519
520 ATF_REQUIRE(WIFEXITED(sta) != 0);
521 if (WEXITSTATUS(sta) == SIGSEGV)
522 atf_tc_fail("child process got SIGSEGV instead of SIGBUS");
523 ATF_REQUIRE(WEXITSTATUS(sta) == SIGBUS);
524 ATF_REQUIRE(munmap(map, page) == 0);
525 ATF_REQUIRE(close(fd) == 0);
526 }
527
ATF_TC_CLEANUP(mmap_truncate_signal,tc)528 ATF_TC_CLEANUP(mmap_truncate_signal, tc)
529 {
530 (void)unlink(path);
531 }
532
533 ATF_TC(mmap_va0);
ATF_TC_HEAD(mmap_va0,tc)534 ATF_TC_HEAD(mmap_va0, tc)
535 {
536 atf_tc_set_md_var(tc, "descr", "Test mmap(2) and vm.user_va0_disable");
537 }
538
ATF_TC_BODY(mmap_va0,tc)539 ATF_TC_BODY(mmap_va0, tc)
540 {
541 int flags = MAP_ANON | MAP_FIXED | MAP_PRIVATE;
542 size_t len = sizeof(int);
543 void *map;
544 int val;
545
546 /*
547 * Make an anonymous fixed mapping at zero address. If the address
548 * is restricted as noted in security(7), the syscall should fail.
549 */
550 #ifdef __FreeBSD__
551 if (sysctlbyname("security.bsd.map_at_zero", &val, &len, NULL, 0) != 0)
552 atf_tc_fail("failed to read security.bsd.map_at_zero");
553 val = !val; /* 1 == enable map at zero */
554 #endif
555 #ifdef __NetBSD__
556 if (sysctlbyname("vm.user_va0_disable", &val, &len, NULL, 0) != 0)
557 atf_tc_fail("failed to read vm.user_va0_disable");
558 #endif
559
560 map = mmap(NULL, page, PROT_EXEC, flags, -1, 0);
561 map_check(map, val);
562
563 map = mmap(NULL, page, PROT_READ, flags, -1, 0);
564 map_check(map, val);
565
566 map = mmap(NULL, page, PROT_WRITE, flags, -1, 0);
567 map_check(map, val);
568
569 map = mmap(NULL, page, PROT_READ|PROT_WRITE, flags, -1, 0);
570 map_check(map, val);
571
572 map = mmap(NULL, page, PROT_EXEC|PROT_READ|PROT_WRITE, flags, -1, 0);
573 map_check(map, val);
574 }
575
ATF_TP_ADD_TCS(tp)576 ATF_TP_ADD_TCS(tp)
577 {
578 page = sysconf(_SC_PAGESIZE);
579 ATF_REQUIRE(page >= 0);
580
581 #ifdef __NetBSD__
582 ATF_TP_ADD_TC(tp, mmap_block);
583 #endif
584 ATF_TP_ADD_TC(tp, mmap_err);
585 ATF_TP_ADD_TC(tp, mmap_loan);
586 ATF_TP_ADD_TC(tp, mmap_prot_1);
587 ATF_TP_ADD_TC(tp, mmap_prot_2);
588 ATF_TP_ADD_TC(tp, mmap_prot_3);
589 ATF_TP_ADD_TC(tp, mmap_truncate);
590 ATF_TP_ADD_TC(tp, mmap_truncate_signal);
591 ATF_TP_ADD_TC(tp, mmap_va0);
592
593 return atf_no_error();
594 }
595