Import the NetBSD test suite from ^/vendor/NetBSD/tests/09.30.2014_20.45 ,

minus the vendor Makefiles

Provide directions for how to bootstrap the vendor sources in
FREEBSD-upgrade

MFC after 2 weeks
Discussed with: rpaulo
Sponsored by: EMC / Isilon Storage Division

1 files changed, 854 insertions, 0 deletions

diff --git a/contrib/netbsd-tests/kernel/t_sysv.c b/contrib/netbsd-tests/kernel/t_sysv.c
new file mode 100644
index 0000000..0860d4b
--- /dev/null
+++ b/contrib/netbsd-tests/kernel/t_sysv.c
@@ -0,0 +1,854 @@
+/*	$NetBSD: t_sysv.c,v 1.4 2014/03/02 20:13:12 jmmv Exp $	*/
+
+/*-
+ * Copyright (c) 1999, 2007 The NetBSD Foundation, Inc.
+ * All rights reserved.
+ *
+ * This code is derived from software contributed to The NetBSD Foundation
+ * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
+ * NASA Ames Research Center, and by Andrew Doran.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
+ * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
+ * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
+ * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ * POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/*
+ * Test the SVID-compatible Message Queue facility.
+ */
+
+#include <atf-c.h>
+
+#include <err.h>
+#include <errno.h>
+#include <fcntl.h>
+#include <signal.h>
+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+#include <time.h>
+#include <unistd.h>
+
+#include <sys/ipc.h>
+#include <sys/msg.h>
+#include <sys/param.h>
+#include <sys/sem.h>
+#include <sys/shm.h>
+#include <sys/wait.h>
+
+volatile int did_sigsys, did_sigchild;
+volatile int child_status, child_count;
+
+void	sigsys_handler(int);
+void	sigchld_handler(int);
+
+key_t	get_ftok(int);
+
+void	print_msqid_ds(struct msqid_ds *, mode_t);
+void	receiver(void);
+
+void	print_semid_ds(struct semid_ds *, mode_t);
+void	waiter(void);
+
+void	print_shmid_ds(struct shmid_ds *, mode_t);
+void	sharer(void);
+
+#define	MESSAGE_TEXT_LEN	256
+
+struct mymsg {
+	long	mtype;
+	char	mtext[MESSAGE_TEXT_LEN];
+};
+
+const char *m1_str = "California is overrated.";
+const char *m2_str = "The quick brown fox jumped over the lazy dog.";
+
+size_t	pgsize;
+
+#define	MTYPE_1		1
+#define	MTYPE_1_ACK	2
+
+#define	MTYPE_2		3
+#define	MTYPE_2_ACK	4
+
+pid_t	child_pid;
+
+key_t	msgkey, semkey, shmkey;
+
+int	maxloop = 1;
+
+union semun {
+	int	val;		/* value for SETVAL */
+	struct	semid_ds *buf;	/* buffer for IPC_{STAT,SET} */
+	u_short	*array;		/* array for GETALL & SETALL */
+};
+
+
+/* Writes an integer to a file.  To be used from the body of the test
+ * cases below to pass any global identifiers to the cleanup routine. */
+static void
+write_int(const char *path, const int value)
+{
+	int output;
+
+	output = open(path, O_WRONLY | O_CREAT | O_TRUNC, 0600);
+	ATF_REQUIRE_MSG(output != -1, "Failed to create %s", path);
+	write(output, &value, sizeof(value));
+	close(output);
+}
+
+
+/* Reads an integer from a file.  To be used from the cleanup routines
+ * of the test cases below. */
+static int
+read_int(const char *path)
+{
+	int input;
+
+	input = open(path, O_RDONLY);
+	if (input == -1)
+		return -1;
+	else {
+		int value;
+		read(input, &value, sizeof(value));
+		return value;
+	}
+}
+
+
+void
+sigsys_handler(int signo)
+{
+
+	did_sigsys = 1;
+}
+
+void
+sigchld_handler(int signo)
+{
+	int c_status;
+
+	did_sigchild = 1;
+	/*
+	 * Reap the child and return its status
+	 */
+	if (wait(&c_status) == -1)
+		child_status = -errno;
+	else
+		child_status = c_status;
+
+	child_count--;
+}
+
+key_t get_ftok(int id)
+{
+	int fd;
+	char token_key[64], token_dir[64];
+	char *tmpdir;
+	key_t key;
+
+	strlcpy(token_key, "/tmp/t_sysv.XXXXXX", sizeof(token_key));
+	tmpdir = mkdtemp(token_key);
+	ATF_REQUIRE_MSG(tmpdir != NULL, "mkdtemp() failed: %d", errno);
+
+	strlcpy(token_dir, tmpdir, sizeof(token_dir));
+	strlcpy(token_key, tmpdir, sizeof(token_key));
+	strlcat(token_key, "/token_key", sizeof(token_key));
+
+	/* Create the file, since ftok() requires it to exist! */
+
+	fd = open(token_key, O_RDWR | O_CREAT | O_EXCL);
+	if (fd == -1) {
+		rmdir(tmpdir);
+		atf_tc_fail("open() of temp file failed: %d", errno);
+		return (key_t)-1;
+	} else
+		close(fd);
+
+	key = ftok(token_key, id);
+
+	ATF_REQUIRE_MSG(unlink(token_key) != -1, "unlink() failed: %d", errno);
+	ATF_REQUIRE_MSG(rmdir(token_dir) != -1, "rmdir() failed: %d", errno);
+
+	return key;
+}
+
+ATF_TC_WITH_CLEANUP(msg);
+ATF_TC_HEAD(msg, tc)
+{  
+
+	atf_tc_set_md_var(tc, "timeout", "3");
+	atf_tc_set_md_var(tc, "descr", "Checks sysvmsg passing");
+}
+
+ATF_TC_BODY(msg, tc)
+{
+	struct sigaction sa;
+	struct msqid_ds m_ds;
+	struct mymsg m;
+	sigset_t sigmask;
+	int sender_msqid;
+	int loop;
+	int c_status;
+
+	/*
+	 * Install a SIGSYS handler so that we can exit gracefully if
+	 * System V Message Queue support isn't in the kernel.
+	 */
+	did_sigsys = 0;
+	sa.sa_handler = sigsys_handler;
+	sigemptyset(&sa.sa_mask);
+	sa.sa_flags = 0;
+	ATF_REQUIRE_MSG(sigaction(SIGSYS, &sa, NULL) != -1,
+	    "sigaction SIGSYS: %d", errno);
+
+	/*
+	 * Install a SIGCHLD handler to deal with all possible exit
+	 * conditions of the receiver.
+	 */
+	did_sigchild = 0;
+	child_count = 0;
+	sa.sa_handler = sigchld_handler;
+	sigemptyset(&sa.sa_mask);
+	sa.sa_flags = 0;
+	ATF_REQUIRE_MSG(sigaction(SIGCHLD, &sa, NULL) != -1,
+	    "sigaction SIGCHLD: %d", errno);
+
+	msgkey = get_ftok(4160);
+	ATF_REQUIRE_MSG(msgkey != (key_t)-1, "get_ftok failed");
+
+	sender_msqid = msgget(msgkey, IPC_CREAT | 0640);
+	ATF_REQUIRE_MSG(sender_msqid != -1, "msgget: %d", errno);
+	write_int("sender_msqid", sender_msqid);
+
+	if (did_sigsys) {
+		atf_tc_skip("SYSV Message Queue not supported");
+		return;
+	}
+
+	ATF_REQUIRE_MSG(msgctl(sender_msqid, IPC_STAT, &m_ds) != -1,
+	"msgctl IPC_STAT 1: %d", errno);
+
+	print_msqid_ds(&m_ds, 0640);
+
+	m_ds.msg_perm.mode = (m_ds.msg_perm.mode & ~0777) | 0600;
+
+	ATF_REQUIRE_MSG(msgctl(sender_msqid, IPC_SET, &m_ds) != -1,
+	    "msgctl IPC_SET: %d", errno);
+
+	memset(&m_ds, 0, sizeof(m_ds));
+
+	ATF_REQUIRE_MSG(msgctl(sender_msqid, IPC_STAT, &m_ds) != -1,
+	    "msgctl IPC_STAT 2: %d", errno);
+
+	ATF_REQUIRE_MSG((m_ds.msg_perm.mode & 0777) == 0600,
+	    "IPC_SET of mode didn't hold");
+
+	print_msqid_ds(&m_ds, 0600);
+
+	switch ((child_pid = fork())) {
+	case -1:
+		atf_tc_fail("fork: %d", errno);
+		return;
+
+	case 0:
+		child_count++;
+		receiver();
+		break;
+
+	default:
+		break;
+	}
+
+	for (loop = 0; loop < maxloop; loop++) {
+		/*
+		 * Send the first message to the receiver and wait for the ACK.
+		 */
+		m.mtype = MTYPE_1;
+		strcpy(m.mtext, m1_str);
+		ATF_REQUIRE_MSG(msgsnd(sender_msqid, &m, MESSAGE_TEXT_LEN,
+		    0) != -1, "sender: msgsnd 1: %d", errno);
+
+		ATF_REQUIRE_MSG(msgrcv(sender_msqid, &m, MESSAGE_TEXT_LEN,
+				       MTYPE_1_ACK, 0) == MESSAGE_TEXT_LEN,
+		    "sender: msgrcv 1 ack: %d", errno);
+
+		print_msqid_ds(&m_ds, 0600);
+
+		/*
+		 * Send the second message to the receiver and wait for the ACK.
+		 */
+		m.mtype = MTYPE_2;
+		strcpy(m.mtext, m2_str);
+		ATF_REQUIRE_MSG(msgsnd(sender_msqid, &m, MESSAGE_TEXT_LEN, 0) != -1,
+		    "sender: msgsnd 2: %d", errno);
+
+		ATF_REQUIRE_MSG(msgrcv(sender_msqid, &m, MESSAGE_TEXT_LEN,
+				       MTYPE_2_ACK, 0) == MESSAGE_TEXT_LEN,
+		    "sender: msgrcv 2 ack: %d", errno);
+	}
+
+	/*
+	 * Wait for child to finish
+	 */
+	sigemptyset(&sigmask);
+	(void) sigsuspend(&sigmask);
+
+	/*
+	 * ...and any other signal is an unexpected error.
+	 */
+	if (did_sigchild) {
+		c_status = child_status;
+		if (c_status < 0)
+			atf_tc_fail("waitpid: %d", -c_status);
+		else if (WIFEXITED(c_status) == 0)
+			atf_tc_fail("child abnormal exit: %d", c_status);
+		else if (WEXITSTATUS(c_status) != 0)
+			atf_tc_fail("c status: %d", WEXITSTATUS(c_status));
+		else {
+			ATF_REQUIRE_MSG(msgctl(sender_msqid, IPC_STAT, &m_ds)
+			    != -1, "msgctl IPC_STAT: %d", errno);
+
+			print_msqid_ds(&m_ds, 0600);
+			atf_tc_pass();
+		}
+	} else
+		atf_tc_fail("sender: received unexpected signal");
+}
+
+ATF_TC_CLEANUP(msg, tc)
+{
+	int sender_msqid;
+
+	/*
+	 * Remove the message queue if it exists.
+	 */
+	sender_msqid = read_int("sender_msqid");
+	if (sender_msqid != -1)
+		if (msgctl(sender_msqid, IPC_RMID, NULL) == -1)
+			err(1, "msgctl IPC_RMID");
+}
+
+void
+print_msqid_ds(mp, mode)
+	struct msqid_ds *mp;
+	mode_t mode;
+{
+	uid_t uid = geteuid();
+	gid_t gid = getegid();
+
+	printf("PERM: uid %d, gid %d, cuid %d, cgid %d, mode 0%o\n",
+	    mp->msg_perm.uid, mp->msg_perm.gid,
+	    mp->msg_perm.cuid, mp->msg_perm.cgid,
+	    mp->msg_perm.mode & 0777);
+
+	printf("qnum %lu, qbytes %lu, lspid %d, lrpid %d\n",
+	    mp->msg_qnum, (u_long)mp->msg_qbytes, mp->msg_lspid,
+	    mp->msg_lrpid);
+
+	printf("stime: %s", ctime(&mp->msg_stime));
+	printf("rtime: %s", ctime(&mp->msg_rtime));
+	printf("ctime: %s", ctime(&mp->msg_ctime));
+
+	/*
+	 * Sanity check a few things.
+	 */
+
+	ATF_REQUIRE_MSG(mp->msg_perm.uid == uid && mp->msg_perm.cuid == uid,
+	    "uid mismatch");
+
+	ATF_REQUIRE_MSG(mp->msg_perm.gid == gid && mp->msg_perm.cgid == gid,
+	    "gid mismatch");
+
+	ATF_REQUIRE_MSG((mp->msg_perm.mode & 0777) == mode, "mode mismatch");
+}
+
+void
+receiver()
+{
+	struct mymsg m;
+	int msqid, loop;
+
+	if ((msqid = msgget(msgkey, 0)) == -1)
+		err(1, "receiver: msgget");
+
+	for (loop = 0; loop < maxloop; loop++) {
+		/*
+		 * Receive the first message, print it, and send an ACK.
+		 */
+		if (msgrcv(msqid, &m, MESSAGE_TEXT_LEN, MTYPE_1, 0) != MESSAGE_TEXT_LEN)
+			err(1, "receiver: msgrcv 1");
+
+		printf("%s\n", m.mtext);
+		if (strcmp(m.mtext, m1_str) != 0)
+			err(1, "receiver: message 1 data isn't correct");
+
+		m.mtype = MTYPE_1_ACK;
+
+		if (msgsnd(msqid, &m, MESSAGE_TEXT_LEN, 0) == -1)
+			err(1, "receiver: msgsnd ack 1");
+
+		/*
+		 * Receive the second message, print it, and send an ACK.
+		 */
+
+		if (msgrcv(msqid, &m, MESSAGE_TEXT_LEN, MTYPE_2, 0) != MESSAGE_TEXT_LEN)
+			err(1, "receiver: msgrcv 2");
+
+		printf("%s\n", m.mtext);
+		if (strcmp(m.mtext, m2_str) != 0)
+			err(1, "receiver: message 2 data isn't correct");
+
+		m.mtype = MTYPE_2_ACK;
+
+		if (msgsnd(msqid, &m, MESSAGE_TEXT_LEN, 0) == -1)
+			err(1, "receiver: msgsnd ack 2");
+	}
+
+	exit(0);
+}
+
+/*
+ * Test the SVID-compatible Semaphore facility.
+ */
+
+ATF_TC_WITH_CLEANUP(sem);
+ATF_TC_HEAD(sem, tc)
+{  
+
+	atf_tc_set_md_var(tc, "timeout", "3");
+	atf_tc_set_md_var(tc, "descr", "Checks sysvmsg passing");
+}
+
+ATF_TC_BODY(sem, tc)
+{
+	struct sigaction sa;
+	union semun sun;
+	struct semid_ds s_ds;
+	sigset_t sigmask;
+	int sender_semid;
+	int i;
+	int c_status;
+
+	/*
+	 * Install a SIGSYS handler so that we can exit gracefully if
+	 * System V Semaphore support isn't in the kernel.
+	 */
+	did_sigsys = 0;
+	sa.sa_handler = sigsys_handler;
+	sigemptyset(&sa.sa_mask);
+	sa.sa_flags = 0;
+	ATF_REQUIRE_MSG(sigaction(SIGSYS, &sa, NULL) != -1,
+	    "sigaction SIGSYS: %d", errno);
+
+	/*
+	 * Install a SIGCHLD handler to deal with all possible exit
+	 * conditions of the receiver.
+	 */
+	did_sigchild = 0;
+	child_count = 0;
+	sa.sa_handler = sigchld_handler;
+	sigemptyset(&sa.sa_mask);
+	sa.sa_flags = 0;
+	ATF_REQUIRE_MSG(sigaction(SIGCHLD, &sa, NULL) != -1,
+	    "sigaction SIGCHLD: %d", errno);
+
+	semkey = get_ftok(4160);
+	ATF_REQUIRE_MSG(semkey != (key_t)-1, "get_ftok failed");
+
+	sender_semid = semget(semkey, 1, IPC_CREAT | 0640);
+	ATF_REQUIRE_MSG(sender_semid != -1, "semget: %d", errno);
+	write_int("sender_semid", sender_semid);
+
+	if (did_sigsys) {
+		atf_tc_skip("SYSV Semaphore not supported");
+		return;
+	}
+	
+	sun.buf = &s_ds;
+	ATF_REQUIRE_MSG(semctl(sender_semid, 0, IPC_STAT, sun) != -1,
+	    "semctl IPC_STAT: %d", errno);
+
+	print_semid_ds(&s_ds, 0640);
+
+	s_ds.sem_perm.mode = (s_ds.sem_perm.mode & ~0777) | 0600;
+
+	sun.buf = &s_ds;
+	ATF_REQUIRE_MSG(semctl(sender_semid, 0, IPC_SET, sun) != -1,
+	    "semctl IPC_SET: %d", errno);
+
+	memset(&s_ds, 0, sizeof(s_ds));
+
+	sun.buf = &s_ds;
+	ATF_REQUIRE_MSG(semctl(sender_semid, 0, IPC_STAT, sun) != -1,
+	    "semctl IPC_STAT: %d", errno);
+
+	ATF_REQUIRE_MSG((s_ds.sem_perm.mode & 0777) == 0600,
+	    "IPC_SET of mode didn't hold");
+
+	print_semid_ds(&s_ds, 0600);
+
+	for (child_count = 0; child_count < 5; child_count++) {
+		switch ((child_pid = fork())) {
+		case -1:
+			atf_tc_fail("fork: %d", errno);
+			return;
+
+		case 0:
+			waiter();
+			break;
+
+		default:
+			break;
+		}
+	}
+
+	/*
+	 * Wait for all of the waiters to be attempting to acquire the
+	 * semaphore.
+	 */
+	for (;;) {
+		i = semctl(sender_semid, 0, GETNCNT);
+		if (i == -1)
+			atf_tc_fail("semctl GETNCNT: %d", i);
+		if (i == 5)
+			break;
+	}
+
+	/*
+	 * Now set the thundering herd in motion by initializing the
+	 * semaphore to the value 1.
+	 */
+	sun.val = 1;
+	ATF_REQUIRE_MSG(semctl(sender_semid, 0, SETVAL, sun) != -1,
+	    "sender: semctl SETVAL to 1: %d", errno);
+
+	/*
+	 * Wait for all children to finish
+	 */
+	sigemptyset(&sigmask);
+	for (;;) {
+		(void) sigsuspend(&sigmask);
+		if (did_sigchild) {
+			c_status = child_status;
+			if (c_status < 0)
+				atf_tc_fail("waitpid: %d", -c_status);
+			else if (WIFEXITED(c_status) == 0)
+				atf_tc_fail("c abnormal exit: %d", c_status);
+			else if (WEXITSTATUS(c_status) != 0)
+				atf_tc_fail("c status: %d",
+				    WEXITSTATUS(c_status));
+			else {
+				sun.buf = &s_ds;
+				ATF_REQUIRE_MSG(semctl(sender_semid, 0,
+						    IPC_STAT, sun) != -1,
+				    "semctl IPC_STAT: %d", errno);
+
+				print_semid_ds(&s_ds, 0600);
+				atf_tc_pass();
+			}
+			if (child_count <= 0)
+				break;
+			did_sigchild = 0;
+		} else {
+			atf_tc_fail("sender: received unexpected signal");
+			break;
+		}
+	}
+}
+
+ATF_TC_CLEANUP(sem, tc)
+{
+	int sender_semid;
+
+	/*
+	 * Remove the semaphore if it exists
+	 */
+	sender_semid = read_int("sender_semid");
+	if (sender_semid != -1)
+		if (semctl(sender_semid, 0, IPC_RMID) == -1)
+			err(1, "semctl IPC_RMID");
+}
+
+void
+print_semid_ds(sp, mode)
+	struct semid_ds *sp;
+	mode_t mode;
+{
+	uid_t uid = geteuid();
+	gid_t gid = getegid();
+
+	printf("PERM: uid %d, gid %d, cuid %d, cgid %d, mode 0%o\n",
+	    sp->sem_perm.uid, sp->sem_perm.gid,
+	    sp->sem_perm.cuid, sp->sem_perm.cgid,
+	    sp->sem_perm.mode & 0777);
+
+	printf("nsems %u\n", sp->sem_nsems);
+
+	printf("otime: %s", ctime(&sp->sem_otime));
+	printf("ctime: %s", ctime(&sp->sem_ctime));
+
+	/*
+	 * Sanity check a few things.
+	 */
+
+	ATF_REQUIRE_MSG(sp->sem_perm.uid == uid && sp->sem_perm.cuid == uid,
+	    "uid mismatch");
+
+	ATF_REQUIRE_MSG(sp->sem_perm.gid == gid && sp->sem_perm.cgid == gid,
+	    "gid mismatch");
+
+	ATF_REQUIRE_MSG((sp->sem_perm.mode & 0777) == mode,
+	    "mode mismatch %o != %o", (sp->sem_perm.mode & 0777), mode);
+}
+
+void
+waiter()
+{
+	struct sembuf s;
+	int semid;
+
+	if ((semid = semget(semkey, 1, 0)) == -1)
+		err(1, "waiter: semget");
+
+	/*
+	 * Attempt to acquire the semaphore.
+	 */
+	s.sem_num = 0;
+	s.sem_op = -1;
+	s.sem_flg = SEM_UNDO;
+
+	if (semop(semid, &s, 1) == -1)
+		err(1, "waiter: semop -1");
+
+	printf("WOO!  GOT THE SEMAPHORE!\n");
+	sleep(1);
+
+	/*
+	 * Release the semaphore and exit.
+	 */
+	s.sem_num = 0;
+	s.sem_op = 1;
+	s.sem_flg = SEM_UNDO;
+
+	if (semop(semid, &s, 1) == -1)
+		err(1, "waiter: semop +1");
+
+	exit(0);
+}
+
+/*
+ * Test the SVID-compatible Shared Memory facility.
+ */
+
+ATF_TC_WITH_CLEANUP(shm);
+ATF_TC_HEAD(shm, tc)
+{  
+
+	atf_tc_set_md_var(tc, "timeout", "3");
+	atf_tc_set_md_var(tc, "descr", "Checks sysv shared memory");
+}
+
+ATF_TC_BODY(shm, tc)
+{
+	struct sigaction sa;
+	struct shmid_ds s_ds;
+	sigset_t sigmask;
+	char *shm_buf;
+	int sender_shmid;
+	int c_status;
+
+	/*
+	 * Install a SIGSYS handler so that we can exit gracefully if
+	 * System V Shared Memory support isn't in the kernel.
+	 */
+	did_sigsys = 0;
+	sa.sa_handler = sigsys_handler;
+	sigemptyset(&sa.sa_mask);
+	sa.sa_flags = 0;
+	ATF_REQUIRE_MSG(sigaction(SIGSYS, &sa, NULL) != -1,
+	    "sigaction SIGSYS: %d", errno);
+
+	/*
+	 * Install a SIGCHLD handler to deal with all possible exit
+	 * conditions of the sharer.
+	 */
+	did_sigchild = 0;
+	child_count = 0;
+	sa.sa_handler = sigchld_handler;
+	sigemptyset(&sa.sa_mask);
+	sa.sa_flags = 0;
+	ATF_REQUIRE_MSG(sigaction(SIGCHLD, &sa, NULL) != -1,
+	    "sigaction SIGCHLD: %d", errno);
+
+	pgsize = sysconf(_SC_PAGESIZE);
+
+	shmkey = get_ftok(4160);
+	ATF_REQUIRE_MSG(shmkey != (key_t)-1, "get_ftok failed");
+
+	ATF_REQUIRE_MSG((sender_shmid = shmget(shmkey, pgsize,
+					       IPC_CREAT | 0640)) != -1,
+	    "shmget: %d", errno);
+	write_int("sender_shmid", sender_shmid);
+
+	ATF_REQUIRE_MSG(shmctl(sender_shmid, IPC_STAT, &s_ds) != -1,
+	    "shmctl IPC_STAT: %d", errno);
+
+	print_shmid_ds(&s_ds, 0640);
+
+	s_ds.shm_perm.mode = (s_ds.shm_perm.mode & ~0777) | 0600;
+
+	ATF_REQUIRE_MSG(shmctl(sender_shmid, IPC_SET, &s_ds) != -1,
+	    "shmctl IPC_SET: %d", errno);
+
+	memset(&s_ds, 0, sizeof(s_ds));
+
+	ATF_REQUIRE_MSG(shmctl(sender_shmid, IPC_STAT, &s_ds) != -1,
+	    "shmctl IPC_STAT: %d", errno);
+
+	ATF_REQUIRE_MSG((s_ds.shm_perm.mode & 0777) == 0600,
+	    "IPC_SET of mode didn't hold");
+
+	print_shmid_ds(&s_ds, 0600);
+
+	shm_buf = shmat(sender_shmid, NULL, 0);
+	ATF_REQUIRE_MSG(shm_buf != (void *) -1, "sender: shmat: %d", errno);
+
+	/*
+	 * Write the test pattern into the shared memory buffer.
+	 */
+	strcpy(shm_buf, m2_str);
+
+	switch ((child_pid = fork())) {
+	case -1:
+		atf_tc_fail("fork: %d", errno);
+		return;
+
+	case 0:
+		sharer();
+		break;
+
+	default:
+		break;
+	}
+
+	/*
+	 * Wait for child to finish
+	 */
+	sigemptyset(&sigmask);
+	(void) sigsuspend(&sigmask);
+
+	if (did_sigchild) {
+		c_status = child_status;
+		if (c_status < 0)
+			atf_tc_fail("waitpid: %d", -c_status);
+		else if (WIFEXITED(c_status) == 0)
+			atf_tc_fail("c abnormal exit: %d", c_status);
+		else if (WEXITSTATUS(c_status) != 0)
+			atf_tc_fail("c status: %d", WEXITSTATUS(c_status));
+		else {
+			ATF_REQUIRE_MSG(shmctl(sender_shmid, IPC_STAT,
+					       &s_ds) != -1,
+			    "shmctl IPC_STAT: %d", errno);
+
+			print_shmid_ds(&s_ds, 0600);
+			atf_tc_pass();
+		}
+	} else
+		atf_tc_fail("sender: received unexpected signal");
+}
+
+ATF_TC_CLEANUP(shm, tc)
+{
+	int sender_shmid;
+
+	/*
+	 * Remove the shared memory area if it exists.
+	 */
+	sender_shmid = read_int("sender_shmid");
+	if (sender_shmid != -1)
+		if (shmctl(sender_shmid, IPC_RMID, NULL) == -1)
+			err(1, "shmctl IPC_RMID");
+}
+
+void
+print_shmid_ds(sp, mode)
+	struct shmid_ds *sp;
+	mode_t mode;
+{
+	uid_t uid = geteuid();
+	gid_t gid = getegid();
+
+	printf("PERM: uid %d, gid %d, cuid %d, cgid %d, mode 0%o\n",
+	    sp->shm_perm.uid, sp->shm_perm.gid,
+	    sp->shm_perm.cuid, sp->shm_perm.cgid,
+	    sp->shm_perm.mode & 0777);
+
+	printf("segsz %lu, lpid %d, cpid %d, nattch %u\n",
+	    (u_long)sp->shm_segsz, sp->shm_lpid, sp->shm_cpid,
+	    sp->shm_nattch);
+
+	printf("atime: %s", ctime(&sp->shm_atime));
+	printf("dtime: %s", ctime(&sp->shm_dtime));
+	printf("ctime: %s", ctime(&sp->shm_ctime));
+
+	/*
+	 * Sanity check a few things.
+	 */
+
+	ATF_REQUIRE_MSG(sp->shm_perm.uid == uid && sp->shm_perm.cuid == uid,
+	    "uid mismatch");
+
+	ATF_REQUIRE_MSG(sp->shm_perm.gid == gid && sp->shm_perm.cgid == gid,
+	    "gid mismatch");
+
+	ATF_REQUIRE_MSG((sp->shm_perm.mode & 0777) == mode, "mode mismatch");
+}
+
+void
+sharer()
+{
+	int shmid;
+	void *shm_buf;
+
+	shmid = shmget(shmkey, pgsize, 0);
+	ATF_REQUIRE_MSG(shmid != -1, "receiver: shmget:%d", errno);
+
+	shm_buf = shmat(shmid, NULL, 0);
+	ATF_REQUIRE_MSG(shm_buf != (void *) -1, "receiver: shmat: %d", errno);
+
+	printf("%s\n", (const char *)shm_buf);
+	
+	ATF_REQUIRE_MSG(strcmp((const char *)shm_buf, m2_str) == 0,
+	    "receiver: data isn't correct");
+
+	exit(0);
+}
+
+ATF_TP_ADD_TCS(tp)
+{
+
+	ATF_TP_ADD_TC(tp, msg); 
+	ATF_TP_ADD_TC(tp, sem); 
+	ATF_TP_ADD_TC(tp, shm); 
+
+	return atf_no_error();
+}
+