1 /* $NetBSD: t_sysv.c,v 1.4 2014/03/02 20:13:12 jmmv Exp $ */
4 * Copyright (c) 1999, 2007 The NetBSD Foundation, Inc.
7 * This code is derived from software contributed to The NetBSD Foundation
8 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
9 * NASA Ames Research Center, and by Andrew Doran.
11 * Redistribution and use in source and binary forms, with or without
12 * modification, are permitted provided that the following conditions
14 * 1. Redistributions of source code must retain the above copyright
15 * notice, this list of conditions and the following disclaimer.
16 * 2. Redistributions in binary form must reproduce the above copyright
17 * notice, this list of conditions and the following disclaimer in the
18 * documentation and/or other materials provided with the distribution.
20 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
21 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
22 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
23 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
24 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
25 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
26 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
27 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
28 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
29 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
30 * POSSIBILITY OF SUCH DAMAGE.
34 * Test the SVID-compatible Message Queue facility.
52 #include <sys/param.h>
57 volatile int did_sigsys, did_sigchild;
58 volatile int child_status, child_count;
60 void sigsys_handler(int);
61 void sigchld_handler(int);
65 void print_msqid_ds(struct msqid_ds *, mode_t);
68 void print_semid_ds(struct semid_ds *, mode_t);
71 void print_shmid_ds(struct shmid_ds *, mode_t);
74 #define MESSAGE_TEXT_LEN 256
78 char mtext[MESSAGE_TEXT_LEN];
81 const char *m1_str = "California is overrated.";
82 const char *m2_str = "The quick brown fox jumped over the lazy dog.";
94 key_t msgkey, semkey, shmkey;
99 int val; /* value for SETVAL */
100 struct semid_ds *buf; /* buffer for IPC_{STAT,SET} */
101 u_short *array; /* array for GETALL & SETALL */
105 /* Writes an integer to a file. To be used from the body of the test
106 * cases below to pass any global identifiers to the cleanup routine. */
108 write_int(const char *path, const int value)
112 output = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0600);
113 ATF_REQUIRE_MSG(output != -1, "Failed to create %s", path);
114 write(output, &value, sizeof(value));
119 /* Reads an integer from a file. To be used from the cleanup routines
120 * of the test cases below. */
122 read_int(const char *path)
126 input = open(path, O_RDONLY);
131 ATF_REQUIRE_EQ(read(input, &value, sizeof(value)), sizeof(value));
139 sigsys_handler(int signo)
146 sigchld_handler(int signo)
152 * Reap the child and return its status
154 if (wait(&c_status) == -1)
155 child_status = -errno;
157 child_status = c_status;
162 key_t get_ftok(int id)
165 char token_key[64], token_dir[64];
169 strlcpy(token_key, "/tmp/t_sysv.XXXXXX", sizeof(token_key));
170 tmpdir = mkdtemp(token_key);
171 ATF_REQUIRE_MSG(tmpdir != NULL, "mkdtemp() failed: %d", errno);
173 strlcpy(token_dir, tmpdir, sizeof(token_dir));
174 strlcpy(token_key, tmpdir, sizeof(token_key));
175 strlcat(token_key, "/token_key", sizeof(token_key));
177 /* Create the file, since ftok() requires it to exist! */
179 fd = open(token_key, O_RDWR | O_CREAT | O_EXCL, 0600);
182 atf_tc_fail("open() of temp file failed: %d", errno);
187 key = ftok(token_key, id);
189 ATF_REQUIRE_MSG(unlink(token_key) != -1, "unlink() failed: %d", errno);
190 ATF_REQUIRE_MSG(rmdir(token_dir) != -1, "rmdir() failed: %d", errno);
195 ATF_TC_WITH_CLEANUP(msg);
199 atf_tc_set_md_var(tc, "timeout", "3");
200 atf_tc_set_md_var(tc, "descr", "Checks sysvmsg passing");
206 struct msqid_ds m_ds;
214 * Install a SIGSYS handler so that we can exit gracefully if
215 * System V Message Queue support isn't in the kernel.
218 sa.sa_handler = sigsys_handler;
219 sigemptyset(&sa.sa_mask);
221 ATF_REQUIRE_MSG(sigaction(SIGSYS, &sa, NULL) != -1,
222 "sigaction SIGSYS: %d", errno);
225 * Install a SIGCHLD handler to deal with all possible exit
226 * conditions of the receiver.
230 sa.sa_handler = sigchld_handler;
231 sigemptyset(&sa.sa_mask);
233 ATF_REQUIRE_MSG(sigaction(SIGCHLD, &sa, NULL) != -1,
234 "sigaction SIGCHLD: %d", errno);
236 msgkey = get_ftok(4160);
237 ATF_REQUIRE_MSG(msgkey != (key_t)-1, "get_ftok failed");
239 sender_msqid = msgget(msgkey, IPC_CREAT | 0640);
240 ATF_REQUIRE_MSG(sender_msqid != -1, "msgget: %d", errno);
241 write_int("sender_msqid", sender_msqid);
244 atf_tc_skip("SYSV Message Queue not supported");
248 ATF_REQUIRE_MSG(msgctl(sender_msqid, IPC_STAT, &m_ds) != -1,
249 "msgctl IPC_STAT 1: %d", errno);
251 print_msqid_ds(&m_ds, 0640);
253 m_ds.msg_perm.mode = (m_ds.msg_perm.mode & ~0777) | 0600;
255 ATF_REQUIRE_MSG(msgctl(sender_msqid, IPC_SET, &m_ds) != -1,
256 "msgctl IPC_SET: %d", errno);
258 memset(&m_ds, 0, sizeof(m_ds));
260 ATF_REQUIRE_MSG(msgctl(sender_msqid, IPC_STAT, &m_ds) != -1,
261 "msgctl IPC_STAT 2: %d", errno);
263 ATF_REQUIRE_MSG((m_ds.msg_perm.mode & 0777) == 0600,
264 "IPC_SET of mode didn't hold");
266 print_msqid_ds(&m_ds, 0600);
268 switch ((child_pid = fork())) {
270 atf_tc_fail("fork: %d", errno);
282 for (loop = 0; loop < maxloop; loop++) {
284 * Send the first message to the receiver and wait for the ACK.
287 strlcpy(m.mtext, m1_str, sizeof(m.mtext));
288 ATF_REQUIRE_MSG(msgsnd(sender_msqid, &m, MESSAGE_TEXT_LEN,
289 0) != -1, "sender: msgsnd 1: %d", errno);
291 ATF_REQUIRE_MSG(msgrcv(sender_msqid, &m, MESSAGE_TEXT_LEN,
292 MTYPE_1_ACK, 0) == MESSAGE_TEXT_LEN,
293 "sender: msgrcv 1 ack: %d", errno);
295 print_msqid_ds(&m_ds, 0600);
298 * Send the second message to the receiver and wait for the ACK.
301 strlcpy(m.mtext, m2_str, sizeof(m.mtext));
302 ATF_REQUIRE_MSG(msgsnd(sender_msqid, &m, MESSAGE_TEXT_LEN, 0) != -1,
303 "sender: msgsnd 2: %d", errno);
305 ATF_REQUIRE_MSG(msgrcv(sender_msqid, &m, MESSAGE_TEXT_LEN,
306 MTYPE_2_ACK, 0) == MESSAGE_TEXT_LEN,
307 "sender: msgrcv 2 ack: %d", errno);
311 * Wait for child to finish
313 sigemptyset(&sigmask);
314 (void) sigsuspend(&sigmask);
317 * ...and any other signal is an unexpected error.
320 c_status = child_status;
322 atf_tc_fail("waitpid: %d", -c_status);
323 else if (WIFEXITED(c_status) == 0)
324 atf_tc_fail("child abnormal exit: %d", c_status);
325 else if (WEXITSTATUS(c_status) != 0)
326 atf_tc_fail("c status: %d", WEXITSTATUS(c_status));
328 ATF_REQUIRE_MSG(msgctl(sender_msqid, IPC_STAT, &m_ds)
329 != -1, "msgctl IPC_STAT: %d", errno);
331 print_msqid_ds(&m_ds, 0600);
335 atf_tc_fail("sender: received unexpected signal");
338 ATF_TC_CLEANUP(msg, tc)
343 * Remove the message queue if it exists.
345 sender_msqid = read_int("sender_msqid");
346 if (sender_msqid != -1)
347 if (msgctl(sender_msqid, IPC_RMID, NULL) == -1)
348 err(1, "msgctl IPC_RMID");
352 print_msqid_ds(struct msqid_ds *mp, mode_t mode)
354 uid_t uid = geteuid();
355 gid_t gid = getegid();
357 printf("PERM: uid %d, gid %d, cuid %d, cgid %d, mode 0%o\n",
358 mp->msg_perm.uid, mp->msg_perm.gid,
359 mp->msg_perm.cuid, mp->msg_perm.cgid,
360 mp->msg_perm.mode & 0777);
362 printf("qnum %lu, qbytes %lu, lspid %d, lrpid %d\n",
363 mp->msg_qnum, (u_long)mp->msg_qbytes, mp->msg_lspid,
366 printf("stime: %s", ctime(&mp->msg_stime));
367 printf("rtime: %s", ctime(&mp->msg_rtime));
368 printf("ctime: %s", ctime(&mp->msg_ctime));
371 * Sanity check a few things.
374 ATF_REQUIRE_MSG(mp->msg_perm.uid == uid && mp->msg_perm.cuid == uid,
377 ATF_REQUIRE_MSG(mp->msg_perm.gid == gid && mp->msg_perm.cgid == gid,
380 ATF_REQUIRE_MSG((mp->msg_perm.mode & 0777) == mode, "mode mismatch");
389 if ((msqid = msgget(msgkey, 0)) == -1)
390 err(1, "receiver: msgget");
392 for (loop = 0; loop < maxloop; loop++) {
394 * Receive the first message, print it, and send an ACK.
396 if (msgrcv(msqid, &m, MESSAGE_TEXT_LEN, MTYPE_1, 0) != MESSAGE_TEXT_LEN)
397 err(1, "receiver: msgrcv 1");
399 printf("%s\n", m.mtext);
400 if (strcmp(m.mtext, m1_str) != 0)
401 err(1, "receiver: message 1 data isn't correct");
403 m.mtype = MTYPE_1_ACK;
405 if (msgsnd(msqid, &m, MESSAGE_TEXT_LEN, 0) == -1)
406 err(1, "receiver: msgsnd ack 1");
409 * Receive the second message, print it, and send an ACK.
412 if (msgrcv(msqid, &m, MESSAGE_TEXT_LEN, MTYPE_2, 0) != MESSAGE_TEXT_LEN)
413 err(1, "receiver: msgrcv 2");
415 printf("%s\n", m.mtext);
416 if (strcmp(m.mtext, m2_str) != 0)
417 err(1, "receiver: message 2 data isn't correct");
419 m.mtype = MTYPE_2_ACK;
421 if (msgsnd(msqid, &m, MESSAGE_TEXT_LEN, 0) == -1)
422 err(1, "receiver: msgsnd ack 2");
429 * Test the SVID-compatible Semaphore facility.
432 ATF_TC_WITH_CLEANUP(sem);
436 atf_tc_set_md_var(tc, "timeout", "3");
437 atf_tc_set_md_var(tc, "descr", "Checks sysvmsg passing");
444 struct semid_ds s_ds;
451 * Install a SIGSYS handler so that we can exit gracefully if
452 * System V Semaphore support isn't in the kernel.
455 sa.sa_handler = sigsys_handler;
456 sigemptyset(&sa.sa_mask);
458 ATF_REQUIRE_MSG(sigaction(SIGSYS, &sa, NULL) != -1,
459 "sigaction SIGSYS: %d", errno);
462 * Install a SIGCHLD handler to deal with all possible exit
463 * conditions of the receiver.
467 sa.sa_handler = sigchld_handler;
468 sigemptyset(&sa.sa_mask);
470 ATF_REQUIRE_MSG(sigaction(SIGCHLD, &sa, NULL) != -1,
471 "sigaction SIGCHLD: %d", errno);
473 semkey = get_ftok(4160);
474 ATF_REQUIRE_MSG(semkey != (key_t)-1, "get_ftok failed");
476 sender_semid = semget(semkey, 1, IPC_CREAT | 0640);
477 ATF_REQUIRE_MSG(sender_semid != -1, "semget: %d", errno);
478 write_int("sender_semid", sender_semid);
481 atf_tc_skip("SYSV Semaphore not supported");
486 ATF_REQUIRE_MSG(semctl(sender_semid, 0, IPC_STAT, sun) != -1,
487 "semctl IPC_STAT: %d", errno);
489 print_semid_ds(&s_ds, 0640);
491 s_ds.sem_perm.mode = (s_ds.sem_perm.mode & ~0777) | 0600;
494 ATF_REQUIRE_MSG(semctl(sender_semid, 0, IPC_SET, sun) != -1,
495 "semctl IPC_SET: %d", errno);
497 memset(&s_ds, 0, sizeof(s_ds));
500 ATF_REQUIRE_MSG(semctl(sender_semid, 0, IPC_STAT, sun) != -1,
501 "semctl IPC_STAT: %d", errno);
503 ATF_REQUIRE_MSG((s_ds.sem_perm.mode & 0777) == 0600,
504 "IPC_SET of mode didn't hold");
506 print_semid_ds(&s_ds, 0600);
508 for (child_count = 0; child_count < 5; child_count++) {
509 switch ((child_pid = fork())) {
511 atf_tc_fail("fork: %d", errno);
524 * Wait for all of the waiters to be attempting to acquire the
528 i = semctl(sender_semid, 0, GETNCNT);
530 atf_tc_fail("semctl GETNCNT: %d", i);
536 * Now set the thundering herd in motion by initializing the
537 * semaphore to the value 1.
540 ATF_REQUIRE_MSG(semctl(sender_semid, 0, SETVAL, sun) != -1,
541 "sender: semctl SETVAL to 1: %d", errno);
544 * Wait for all children to finish
546 sigemptyset(&sigmask);
548 (void) sigsuspend(&sigmask);
550 c_status = child_status;
552 atf_tc_fail("waitpid: %d", -c_status);
553 else if (WIFEXITED(c_status) == 0)
554 atf_tc_fail("c abnormal exit: %d", c_status);
555 else if (WEXITSTATUS(c_status) != 0)
556 atf_tc_fail("c status: %d",
557 WEXITSTATUS(c_status));
560 ATF_REQUIRE_MSG(semctl(sender_semid, 0,
561 IPC_STAT, sun) != -1,
562 "semctl IPC_STAT: %d", errno);
564 print_semid_ds(&s_ds, 0600);
567 if (child_count <= 0)
571 atf_tc_fail("sender: received unexpected signal");
577 ATF_TC_CLEANUP(sem, tc)
582 * Remove the semaphore if it exists
584 sender_semid = read_int("sender_semid");
585 if (sender_semid != -1)
586 if (semctl(sender_semid, 0, IPC_RMID) == -1)
587 err(1, "semctl IPC_RMID");
591 print_semid_ds(struct semid_ds *sp, mode_t mode)
593 uid_t uid = geteuid();
594 gid_t gid = getegid();
596 printf("PERM: uid %d, gid %d, cuid %d, cgid %d, mode 0%o\n",
597 sp->sem_perm.uid, sp->sem_perm.gid,
598 sp->sem_perm.cuid, sp->sem_perm.cgid,
599 sp->sem_perm.mode & 0777);
601 printf("nsems %u\n", sp->sem_nsems);
603 printf("otime: %s", ctime(&sp->sem_otime));
604 printf("ctime: %s", ctime(&sp->sem_ctime));
607 * Sanity check a few things.
610 ATF_REQUIRE_MSG(sp->sem_perm.uid == uid && sp->sem_perm.cuid == uid,
613 ATF_REQUIRE_MSG(sp->sem_perm.gid == gid && sp->sem_perm.cgid == gid,
616 ATF_REQUIRE_MSG((sp->sem_perm.mode & 0777) == mode,
617 "mode mismatch %o != %o", (sp->sem_perm.mode & 0777), mode);
626 if ((semid = semget(semkey, 1, 0)) == -1)
627 err(1, "waiter: semget");
630 * Attempt to acquire the semaphore.
634 s.sem_flg = SEM_UNDO;
636 if (semop(semid, &s, 1) == -1)
637 err(1, "waiter: semop -1");
639 printf("WOO! GOT THE SEMAPHORE!\n");
643 * Release the semaphore and exit.
647 s.sem_flg = SEM_UNDO;
649 if (semop(semid, &s, 1) == -1)
650 err(1, "waiter: semop +1");
656 * Test the SVID-compatible Shared Memory facility.
659 ATF_TC_WITH_CLEANUP(shm);
663 atf_tc_set_md_var(tc, "timeout", "3");
664 atf_tc_set_md_var(tc, "descr", "Checks sysv shared memory");
670 struct shmid_ds s_ds;
677 * Install a SIGSYS handler so that we can exit gracefully if
678 * System V Shared Memory support isn't in the kernel.
681 sa.sa_handler = sigsys_handler;
682 sigemptyset(&sa.sa_mask);
684 ATF_REQUIRE_MSG(sigaction(SIGSYS, &sa, NULL) != -1,
685 "sigaction SIGSYS: %d", errno);
688 * Install a SIGCHLD handler to deal with all possible exit
689 * conditions of the sharer.
693 sa.sa_handler = sigchld_handler;
694 sigemptyset(&sa.sa_mask);
696 ATF_REQUIRE_MSG(sigaction(SIGCHLD, &sa, NULL) != -1,
697 "sigaction SIGCHLD: %d", errno);
699 pgsize = sysconf(_SC_PAGESIZE);
701 shmkey = get_ftok(4160);
702 ATF_REQUIRE_MSG(shmkey != (key_t)-1, "get_ftok failed");
704 ATF_REQUIRE_MSG((sender_shmid = shmget(shmkey, pgsize,
705 IPC_CREAT | 0640)) != -1,
706 "shmget: %d", errno);
707 write_int("sender_shmid", sender_shmid);
709 ATF_REQUIRE_MSG(shmctl(sender_shmid, IPC_STAT, &s_ds) != -1,
710 "shmctl IPC_STAT: %d", errno);
712 print_shmid_ds(&s_ds, 0640);
714 s_ds.shm_perm.mode = (s_ds.shm_perm.mode & ~0777) | 0600;
716 ATF_REQUIRE_MSG(shmctl(sender_shmid, IPC_SET, &s_ds) != -1,
717 "shmctl IPC_SET: %d", errno);
719 memset(&s_ds, 0, sizeof(s_ds));
721 ATF_REQUIRE_MSG(shmctl(sender_shmid, IPC_STAT, &s_ds) != -1,
722 "shmctl IPC_STAT: %d", errno);
724 ATF_REQUIRE_MSG((s_ds.shm_perm.mode & 0777) == 0600,
725 "IPC_SET of mode didn't hold");
727 print_shmid_ds(&s_ds, 0600);
729 shm_buf = shmat(sender_shmid, NULL, 0);
730 ATF_REQUIRE_MSG(shm_buf != (void *) -1, "sender: shmat: %d", errno);
733 * Write the test pattern into the shared memory buffer.
735 strcpy(shm_buf, m2_str);
737 switch ((child_pid = fork())) {
739 atf_tc_fail("fork: %d", errno);
751 * Wait for child to finish
753 sigemptyset(&sigmask);
754 (void) sigsuspend(&sigmask);
757 c_status = child_status;
759 atf_tc_fail("waitpid: %d", -c_status);
760 else if (WIFEXITED(c_status) == 0)
761 atf_tc_fail("c abnormal exit: %d", c_status);
762 else if (WEXITSTATUS(c_status) != 0)
763 atf_tc_fail("c status: %d", WEXITSTATUS(c_status));
765 ATF_REQUIRE_MSG(shmctl(sender_shmid, IPC_STAT,
767 "shmctl IPC_STAT: %d", errno);
769 print_shmid_ds(&s_ds, 0600);
773 atf_tc_fail("sender: received unexpected signal");
777 shmid_cleanup(const char *name)
782 * Remove the shared memory area if it exists.
784 shmid = read_int(name);
786 if (shmctl(shmid, IPC_RMID, NULL) == -1)
787 err(1, "shmctl IPC_RMID");
791 ATF_TC_CLEANUP(shm, tc)
794 shmid_cleanup("sender_shmid");
798 print_shmid_ds(struct shmid_ds *sp, mode_t mode)
800 uid_t uid = geteuid();
801 gid_t gid = getegid();
803 printf("PERM: uid %d, gid %d, cuid %d, cgid %d, mode 0%o\n",
804 sp->shm_perm.uid, sp->shm_perm.gid,
805 sp->shm_perm.cuid, sp->shm_perm.cgid,
806 sp->shm_perm.mode & 0777);
808 printf("segsz %lu, lpid %d, cpid %d, nattch %u\n",
809 (u_long)sp->shm_segsz, sp->shm_lpid, sp->shm_cpid,
812 printf("atime: %s", ctime(&sp->shm_atime));
813 printf("dtime: %s", ctime(&sp->shm_dtime));
814 printf("ctime: %s", ctime(&sp->shm_ctime));
817 * Sanity check a few things.
820 ATF_REQUIRE_MSG(sp->shm_perm.uid == uid && sp->shm_perm.cuid == uid,
823 ATF_REQUIRE_MSG(sp->shm_perm.gid == gid && sp->shm_perm.cgid == gid,
826 ATF_REQUIRE_MSG((sp->shm_perm.mode & 0777) == mode, "mode mismatch");
835 shmid = shmget(shmkey, pgsize, 0);
836 ATF_REQUIRE_MSG(shmid != -1, "receiver: shmget:%d", errno);
838 shm_buf = shmat(shmid, NULL, 0);
839 ATF_REQUIRE_MSG(shm_buf != (void *) -1, "receiver: shmat: %d", errno);
841 printf("%s\n", (const char *)shm_buf);
843 ATF_REQUIRE_MSG(strcmp((const char *)shm_buf, m2_str) == 0,
844 "receiver: data isn't correct");
850 ATF_TC_WITH_CLEANUP(shm_remap);
851 ATF_TC_HEAD(shm_remap, tc)
854 atf_tc_set_md_var(tc, "descr", "Checks SHM_REMAP");
857 ATF_TC_BODY(shm_remap, tc)
862 pgsize = sysconf(_SC_PAGESIZE);
864 shmkey = get_ftok(4160);
865 ATF_REQUIRE_MSG(shmkey != (key_t)-1, "get_ftok failed");
867 ATF_REQUIRE_MSG((shmid_remap = shmget(shmkey, pgsize,
868 IPC_CREAT | 0640)) != -1, "shmget: %d", errno);
869 write_int("shmid_remap", shmid_remap);
871 ATF_REQUIRE_MSG((shm_buf = mmap(NULL, pgsize, PROT_READ | PROT_WRITE,
872 MAP_ANON | MAP_PRIVATE, -1, 0)) != MAP_FAILED, "mmap: %d", errno);
874 ATF_REQUIRE_MSG(shmat(shmid_remap, shm_buf, 0) == (void *)-1,
875 "shmat without MAP_REMAP succeeded");
876 ATF_REQUIRE_MSG(shmat(shmid_remap, shm_buf, SHM_REMAP) == shm_buf,
877 "shmat(SHM_REMAP): %d", errno);
880 ATF_TC_CLEANUP(shm_remap, tc)
883 shmid_cleanup("shmid_remap");
885 #endif /* SHM_REMAP */
890 ATF_TP_ADD_TC(tp, msg);
891 ATF_TP_ADD_TC(tp, sem);
892 ATF_TP_ADD_TC(tp, shm);
894 ATF_TP_ADD_TC(tp, shm_remap);
897 return atf_no_error();