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;
100 int val; /* value for SETVAL */
101 struct semid_ds *buf; /* buffer for IPC_{STAT,SET} */
102 u_short *array; /* array for GETALL & SETALL */
107 /* Writes an integer to a file. To be used from the body of the test
108 * cases below to pass any global identifiers to the cleanup routine. */
110 write_int(const char *path, const int value)
114 output = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0600);
115 ATF_REQUIRE_MSG(output != -1, "Failed to create %s", path);
116 write(output, &value, sizeof(value));
121 /* Reads an integer from a file. To be used from the cleanup routines
122 * of the test cases below. */
124 read_int(const char *path)
128 input = open(path, O_RDONLY);
133 ATF_REQUIRE_EQ(read(input, &value, sizeof(value)), sizeof(value));
141 sigsys_handler(int signo)
148 sigchld_handler(int signo)
154 * Reap the child and return its status
156 if (wait(&c_status) == -1)
157 child_status = -errno;
159 child_status = c_status;
164 key_t get_ftok(int id)
167 char token_key[64], token_dir[64];
171 strlcpy(token_key, "/tmp/t_sysv.XXXXXX", sizeof(token_key));
172 tmpdir = mkdtemp(token_key);
173 ATF_REQUIRE_MSG(tmpdir != NULL, "mkdtemp() failed: %d", errno);
175 strlcpy(token_dir, tmpdir, sizeof(token_dir));
176 strlcpy(token_key, tmpdir, sizeof(token_key));
177 strlcat(token_key, "/token_key", sizeof(token_key));
179 /* Create the file, since ftok() requires it to exist! */
181 fd = open(token_key, O_RDWR | O_CREAT | O_EXCL, 0600);
184 atf_tc_fail("open() of temp file failed: %d", errno);
189 key = ftok(token_key, id);
191 ATF_REQUIRE_MSG(unlink(token_key) != -1, "unlink() failed: %d", errno);
192 ATF_REQUIRE_MSG(rmdir(token_dir) != -1, "rmdir() failed: %d", errno);
197 ATF_TC_WITH_CLEANUP(msg);
201 atf_tc_set_md_var(tc, "timeout", "3");
202 atf_tc_set_md_var(tc, "descr", "Checks sysvmsg passing");
208 struct msqid_ds m_ds;
216 * Install a SIGSYS handler so that we can exit gracefully if
217 * System V Message Queue support isn't in the kernel.
220 sa.sa_handler = sigsys_handler;
221 sigemptyset(&sa.sa_mask);
223 ATF_REQUIRE_MSG(sigaction(SIGSYS, &sa, NULL) != -1,
224 "sigaction SIGSYS: %d", errno);
227 * Install a SIGCHLD handler to deal with all possible exit
228 * conditions of the receiver.
232 sa.sa_handler = sigchld_handler;
233 sigemptyset(&sa.sa_mask);
235 ATF_REQUIRE_MSG(sigaction(SIGCHLD, &sa, NULL) != -1,
236 "sigaction SIGCHLD: %d", errno);
238 msgkey = get_ftok(4160);
239 ATF_REQUIRE_MSG(msgkey != (key_t)-1, "get_ftok failed");
241 sender_msqid = msgget(msgkey, IPC_CREAT | 0640);
242 ATF_REQUIRE_MSG(sender_msqid != -1, "msgget: %d", errno);
243 write_int("sender_msqid", sender_msqid);
246 atf_tc_skip("SYSV Message Queue not supported");
250 ATF_REQUIRE_MSG(msgctl(sender_msqid, IPC_STAT, &m_ds) != -1,
251 "msgctl IPC_STAT 1: %d", errno);
253 print_msqid_ds(&m_ds, 0640);
255 m_ds.msg_perm.mode = (m_ds.msg_perm.mode & ~0777) | 0600;
257 ATF_REQUIRE_MSG(msgctl(sender_msqid, IPC_SET, &m_ds) != -1,
258 "msgctl IPC_SET: %d", errno);
260 memset(&m_ds, 0, sizeof(m_ds));
262 ATF_REQUIRE_MSG(msgctl(sender_msqid, IPC_STAT, &m_ds) != -1,
263 "msgctl IPC_STAT 2: %d", errno);
265 ATF_REQUIRE_MSG((m_ds.msg_perm.mode & 0777) == 0600,
266 "IPC_SET of mode didn't hold");
268 print_msqid_ds(&m_ds, 0600);
270 switch ((child_pid = fork())) {
272 atf_tc_fail("fork: %d", errno);
284 for (loop = 0; loop < maxloop; loop++) {
286 * Send the first message to the receiver and wait for the ACK.
289 strlcpy(m.mtext, m1_str, sizeof(m.mtext));
290 ATF_REQUIRE_MSG(msgsnd(sender_msqid, &m, MESSAGE_TEXT_LEN,
291 0) != -1, "sender: msgsnd 1: %d", errno);
293 ATF_REQUIRE_MSG(msgrcv(sender_msqid, &m, MESSAGE_TEXT_LEN,
294 MTYPE_1_ACK, 0) == MESSAGE_TEXT_LEN,
295 "sender: msgrcv 1 ack: %d", errno);
297 print_msqid_ds(&m_ds, 0600);
300 * Send the second message to the receiver and wait for the ACK.
303 strlcpy(m.mtext, m2_str, sizeof(m.mtext));
304 ATF_REQUIRE_MSG(msgsnd(sender_msqid, &m, MESSAGE_TEXT_LEN, 0) != -1,
305 "sender: msgsnd 2: %d", errno);
307 ATF_REQUIRE_MSG(msgrcv(sender_msqid, &m, MESSAGE_TEXT_LEN,
308 MTYPE_2_ACK, 0) == MESSAGE_TEXT_LEN,
309 "sender: msgrcv 2 ack: %d", errno);
313 * Wait for child to finish
315 sigemptyset(&sigmask);
316 (void) sigsuspend(&sigmask);
319 * ...and any other signal is an unexpected error.
322 c_status = child_status;
324 atf_tc_fail("waitpid: %d", -c_status);
325 else if (WIFEXITED(c_status) == 0)
326 atf_tc_fail("child abnormal exit: %d", c_status);
327 else if (WEXITSTATUS(c_status) != 0)
328 atf_tc_fail("c status: %d", WEXITSTATUS(c_status));
330 ATF_REQUIRE_MSG(msgctl(sender_msqid, IPC_STAT, &m_ds)
331 != -1, "msgctl IPC_STAT: %d", errno);
333 print_msqid_ds(&m_ds, 0600);
337 atf_tc_fail("sender: received unexpected signal");
340 ATF_TC_CLEANUP(msg, tc)
345 * Remove the message queue if it exists.
347 sender_msqid = read_int("sender_msqid");
348 if (sender_msqid != -1)
349 if (msgctl(sender_msqid, IPC_RMID, NULL) == -1)
350 err(1, "msgctl IPC_RMID");
354 print_msqid_ds(struct msqid_ds *mp, mode_t mode)
356 uid_t uid = geteuid();
357 gid_t gid = getegid();
359 printf("PERM: uid %d, gid %d, cuid %d, cgid %d, mode 0%o\n",
360 mp->msg_perm.uid, mp->msg_perm.gid,
361 mp->msg_perm.cuid, mp->msg_perm.cgid,
362 mp->msg_perm.mode & 0777);
364 printf("qnum %lu, qbytes %lu, lspid %d, lrpid %d\n",
365 mp->msg_qnum, (u_long)mp->msg_qbytes, mp->msg_lspid,
368 printf("stime: %s", ctime(&mp->msg_stime));
369 printf("rtime: %s", ctime(&mp->msg_rtime));
370 printf("ctime: %s", ctime(&mp->msg_ctime));
373 * Sanity check a few things.
376 ATF_REQUIRE_MSG(mp->msg_perm.uid == uid && mp->msg_perm.cuid == uid,
379 ATF_REQUIRE_MSG(mp->msg_perm.gid == gid && mp->msg_perm.cgid == gid,
382 ATF_REQUIRE_MSG((mp->msg_perm.mode & 0777) == mode, "mode mismatch");
391 if ((msqid = msgget(msgkey, 0)) == -1)
392 err(1, "receiver: msgget");
394 for (loop = 0; loop < maxloop; loop++) {
396 * Receive the first message, print it, and send an ACK.
398 if (msgrcv(msqid, &m, MESSAGE_TEXT_LEN, MTYPE_1, 0) != MESSAGE_TEXT_LEN)
399 err(1, "receiver: msgrcv 1");
401 printf("%s\n", m.mtext);
402 if (strcmp(m.mtext, m1_str) != 0)
403 err(1, "receiver: message 1 data isn't correct");
405 m.mtype = MTYPE_1_ACK;
407 if (msgsnd(msqid, &m, MESSAGE_TEXT_LEN, 0) == -1)
408 err(1, "receiver: msgsnd ack 1");
411 * Receive the second message, print it, and send an ACK.
414 if (msgrcv(msqid, &m, MESSAGE_TEXT_LEN, MTYPE_2, 0) != MESSAGE_TEXT_LEN)
415 err(1, "receiver: msgrcv 2");
417 printf("%s\n", m.mtext);
418 if (strcmp(m.mtext, m2_str) != 0)
419 err(1, "receiver: message 2 data isn't correct");
421 m.mtype = MTYPE_2_ACK;
423 if (msgsnd(msqid, &m, MESSAGE_TEXT_LEN, 0) == -1)
424 err(1, "receiver: msgsnd ack 2");
431 * Test the SVID-compatible Semaphore facility.
434 ATF_TC_WITH_CLEANUP(sem);
438 atf_tc_set_md_var(tc, "timeout", "3");
439 atf_tc_set_md_var(tc, "descr", "Checks sysvmsg passing");
446 struct semid_ds s_ds;
453 * Install a SIGSYS handler so that we can exit gracefully if
454 * System V Semaphore support isn't in the kernel.
457 sa.sa_handler = sigsys_handler;
458 sigemptyset(&sa.sa_mask);
460 ATF_REQUIRE_MSG(sigaction(SIGSYS, &sa, NULL) != -1,
461 "sigaction SIGSYS: %d", errno);
464 * Install a SIGCHLD handler to deal with all possible exit
465 * conditions of the receiver.
469 sa.sa_handler = sigchld_handler;
470 sigemptyset(&sa.sa_mask);
472 ATF_REQUIRE_MSG(sigaction(SIGCHLD, &sa, NULL) != -1,
473 "sigaction SIGCHLD: %d", errno);
475 semkey = get_ftok(4160);
476 ATF_REQUIRE_MSG(semkey != (key_t)-1, "get_ftok failed");
478 sender_semid = semget(semkey, 1, IPC_CREAT | 0640);
479 ATF_REQUIRE_MSG(sender_semid != -1, "semget: %d", errno);
480 write_int("sender_semid", sender_semid);
483 atf_tc_skip("SYSV Semaphore not supported");
488 ATF_REQUIRE_MSG(semctl(sender_semid, 0, IPC_STAT, sun) != -1,
489 "semctl IPC_STAT: %d", errno);
491 print_semid_ds(&s_ds, 0640);
493 s_ds.sem_perm.mode = (s_ds.sem_perm.mode & ~0777) | 0600;
496 ATF_REQUIRE_MSG(semctl(sender_semid, 0, IPC_SET, sun) != -1,
497 "semctl IPC_SET: %d", errno);
499 memset(&s_ds, 0, sizeof(s_ds));
502 ATF_REQUIRE_MSG(semctl(sender_semid, 0, IPC_STAT, sun) != -1,
503 "semctl IPC_STAT: %d", errno);
505 ATF_REQUIRE_MSG((s_ds.sem_perm.mode & 0777) == 0600,
506 "IPC_SET of mode didn't hold");
508 print_semid_ds(&s_ds, 0600);
510 for (child_count = 0; child_count < 5; child_count++) {
511 switch ((child_pid = fork())) {
513 atf_tc_fail("fork: %d", errno);
526 * Wait for all of the waiters to be attempting to acquire the
530 i = semctl(sender_semid, 0, GETNCNT);
532 atf_tc_fail("semctl GETNCNT: %d", i);
538 * Now set the thundering herd in motion by initializing the
539 * semaphore to the value 1.
542 ATF_REQUIRE_MSG(semctl(sender_semid, 0, SETVAL, sun) != -1,
543 "sender: semctl SETVAL to 1: %d", errno);
546 * Wait for all children to finish
548 sigemptyset(&sigmask);
550 (void) sigsuspend(&sigmask);
552 c_status = child_status;
554 atf_tc_fail("waitpid: %d", -c_status);
555 else if (WIFEXITED(c_status) == 0)
556 atf_tc_fail("c abnormal exit: %d", c_status);
557 else if (WEXITSTATUS(c_status) != 0)
558 atf_tc_fail("c status: %d",
559 WEXITSTATUS(c_status));
562 ATF_REQUIRE_MSG(semctl(sender_semid, 0,
563 IPC_STAT, sun) != -1,
564 "semctl IPC_STAT: %d", errno);
566 print_semid_ds(&s_ds, 0600);
569 if (child_count <= 0)
573 atf_tc_fail("sender: received unexpected signal");
579 ATF_TC_CLEANUP(sem, tc)
584 * Remove the semaphore if it exists
586 sender_semid = read_int("sender_semid");
587 if (sender_semid != -1)
588 if (semctl(sender_semid, 0, IPC_RMID) == -1)
589 err(1, "semctl IPC_RMID");
593 print_semid_ds(struct semid_ds *sp, mode_t mode)
595 uid_t uid = geteuid();
596 gid_t gid = getegid();
598 printf("PERM: uid %d, gid %d, cuid %d, cgid %d, mode 0%o\n",
599 sp->sem_perm.uid, sp->sem_perm.gid,
600 sp->sem_perm.cuid, sp->sem_perm.cgid,
601 sp->sem_perm.mode & 0777);
603 printf("nsems %u\n", sp->sem_nsems);
605 printf("otime: %s", ctime(&sp->sem_otime));
606 printf("ctime: %s", ctime(&sp->sem_ctime));
609 * Sanity check a few things.
612 ATF_REQUIRE_MSG(sp->sem_perm.uid == uid && sp->sem_perm.cuid == uid,
615 ATF_REQUIRE_MSG(sp->sem_perm.gid == gid && sp->sem_perm.cgid == gid,
618 ATF_REQUIRE_MSG((sp->sem_perm.mode & 0777) == mode,
619 "mode mismatch %o != %o", (sp->sem_perm.mode & 0777), mode);
628 if ((semid = semget(semkey, 1, 0)) == -1)
629 err(1, "waiter: semget");
632 * Attempt to acquire the semaphore.
636 s.sem_flg = SEM_UNDO;
638 if (semop(semid, &s, 1) == -1)
639 err(1, "waiter: semop -1");
641 printf("WOO! GOT THE SEMAPHORE!\n");
645 * Release the semaphore and exit.
649 s.sem_flg = SEM_UNDO;
651 if (semop(semid, &s, 1) == -1)
652 err(1, "waiter: semop +1");
658 * Test the SVID-compatible Shared Memory facility.
661 ATF_TC_WITH_CLEANUP(shm);
665 atf_tc_set_md_var(tc, "timeout", "3");
666 atf_tc_set_md_var(tc, "descr", "Checks sysv shared memory");
672 struct shmid_ds s_ds;
679 * Install a SIGSYS handler so that we can exit gracefully if
680 * System V Shared Memory support isn't in the kernel.
683 sa.sa_handler = sigsys_handler;
684 sigemptyset(&sa.sa_mask);
686 ATF_REQUIRE_MSG(sigaction(SIGSYS, &sa, NULL) != -1,
687 "sigaction SIGSYS: %d", errno);
690 * Install a SIGCHLD handler to deal with all possible exit
691 * conditions of the sharer.
695 sa.sa_handler = sigchld_handler;
696 sigemptyset(&sa.sa_mask);
698 ATF_REQUIRE_MSG(sigaction(SIGCHLD, &sa, NULL) != -1,
699 "sigaction SIGCHLD: %d", errno);
701 pgsize = sysconf(_SC_PAGESIZE);
703 shmkey = get_ftok(4160);
704 ATF_REQUIRE_MSG(shmkey != (key_t)-1, "get_ftok failed");
706 ATF_REQUIRE_MSG((sender_shmid = shmget(shmkey, pgsize,
707 IPC_CREAT | 0640)) != -1,
708 "shmget: %d", errno);
709 write_int("sender_shmid", sender_shmid);
711 ATF_REQUIRE_MSG(shmctl(sender_shmid, IPC_STAT, &s_ds) != -1,
712 "shmctl IPC_STAT: %d", errno);
714 print_shmid_ds(&s_ds, 0640);
716 s_ds.shm_perm.mode = (s_ds.shm_perm.mode & ~0777) | 0600;
718 ATF_REQUIRE_MSG(shmctl(sender_shmid, IPC_SET, &s_ds) != -1,
719 "shmctl IPC_SET: %d", errno);
721 memset(&s_ds, 0, sizeof(s_ds));
723 ATF_REQUIRE_MSG(shmctl(sender_shmid, IPC_STAT, &s_ds) != -1,
724 "shmctl IPC_STAT: %d", errno);
726 ATF_REQUIRE_MSG((s_ds.shm_perm.mode & 0777) == 0600,
727 "IPC_SET of mode didn't hold");
729 print_shmid_ds(&s_ds, 0600);
731 shm_buf = shmat(sender_shmid, NULL, 0);
732 ATF_REQUIRE_MSG(shm_buf != (void *) -1, "sender: shmat: %d", errno);
735 * Write the test pattern into the shared memory buffer.
737 strcpy(shm_buf, m2_str);
739 switch ((child_pid = fork())) {
741 atf_tc_fail("fork: %d", errno);
753 * Wait for child to finish
755 sigemptyset(&sigmask);
756 (void) sigsuspend(&sigmask);
759 c_status = child_status;
761 atf_tc_fail("waitpid: %d", -c_status);
762 else if (WIFEXITED(c_status) == 0)
763 atf_tc_fail("c abnormal exit: %d", c_status);
764 else if (WEXITSTATUS(c_status) != 0)
765 atf_tc_fail("c status: %d", WEXITSTATUS(c_status));
767 ATF_REQUIRE_MSG(shmctl(sender_shmid, IPC_STAT,
769 "shmctl IPC_STAT: %d", errno);
771 print_shmid_ds(&s_ds, 0600);
775 atf_tc_fail("sender: received unexpected signal");
779 shmid_cleanup(const char *name)
784 * Remove the shared memory area if it exists.
786 shmid = read_int(name);
788 if (shmctl(shmid, IPC_RMID, NULL) == -1)
789 err(1, "shmctl IPC_RMID");
793 ATF_TC_CLEANUP(shm, tc)
796 shmid_cleanup("sender_shmid");
800 print_shmid_ds(struct shmid_ds *sp, mode_t mode)
802 uid_t uid = geteuid();
803 gid_t gid = getegid();
805 printf("PERM: uid %d, gid %d, cuid %d, cgid %d, mode 0%o\n",
806 sp->shm_perm.uid, sp->shm_perm.gid,
807 sp->shm_perm.cuid, sp->shm_perm.cgid,
808 sp->shm_perm.mode & 0777);
810 printf("segsz %lu, lpid %d, cpid %d, nattch %u\n",
811 (u_long)sp->shm_segsz, sp->shm_lpid, sp->shm_cpid,
814 printf("atime: %s", ctime(&sp->shm_atime));
815 printf("dtime: %s", ctime(&sp->shm_dtime));
816 printf("ctime: %s", ctime(&sp->shm_ctime));
819 * Sanity check a few things.
822 ATF_REQUIRE_MSG(sp->shm_perm.uid == uid && sp->shm_perm.cuid == uid,
825 ATF_REQUIRE_MSG(sp->shm_perm.gid == gid && sp->shm_perm.cgid == gid,
828 ATF_REQUIRE_MSG((sp->shm_perm.mode & 0777) == mode, "mode mismatch");
837 shmid = shmget(shmkey, pgsize, 0);
838 ATF_REQUIRE_MSG(shmid != -1, "receiver: shmget:%d", errno);
840 shm_buf = shmat(shmid, NULL, 0);
841 ATF_REQUIRE_MSG(shm_buf != (void *) -1, "receiver: shmat: %d", errno);
843 printf("%s\n", (const char *)shm_buf);
845 ATF_REQUIRE_MSG(strcmp((const char *)shm_buf, m2_str) == 0,
846 "receiver: data isn't correct");
852 ATF_TC_WITH_CLEANUP(shm_remap);
853 ATF_TC_HEAD(shm_remap, tc)
856 atf_tc_set_md_var(tc, "descr", "Checks SHM_REMAP");
859 ATF_TC_BODY(shm_remap, tc)
864 pgsize = sysconf(_SC_PAGESIZE);
866 shmkey = get_ftok(4160);
867 ATF_REQUIRE_MSG(shmkey != (key_t)-1, "get_ftok failed");
869 ATF_REQUIRE_MSG((shmid_remap = shmget(shmkey, pgsize,
870 IPC_CREAT | 0640)) != -1, "shmget: %d", errno);
871 write_int("shmid_remap", shmid_remap);
873 ATF_REQUIRE_MSG((shm_buf = mmap(NULL, pgsize, PROT_READ | PROT_WRITE,
874 MAP_ANON | MAP_PRIVATE, -1, 0)) != MAP_FAILED, "mmap: %d", errno);
876 ATF_REQUIRE_MSG(shmat(shmid_remap, shm_buf, 0) == (void *)-1,
877 "shmat without MAP_REMAP succeeded");
878 ATF_REQUIRE_MSG(shmat(shmid_remap, shm_buf, SHM_REMAP) == shm_buf,
879 "shmat(SHM_REMAP): %d", errno);
882 ATF_TC_CLEANUP(shm_remap, tc)
885 shmid_cleanup("shmid_remap");
887 #endif /* SHM_REMAP */
892 ATF_TP_ADD_TC(tp, msg);
893 ATF_TP_ADD_TC(tp, sem);
894 ATF_TP_ADD_TC(tp, shm);
896 ATF_TP_ADD_TC(tp, shm_remap);
899 return atf_no_error();