Add regression tests for sysvipc.

Submitted by: Hiten Pandya <hiten@uk.FreeBSD.org>
Obtained from: NetBSD
This commit is contained in:
Alfred Perlstein 2002-08-15 06:34:37 +00:00
parent e4f5294e18
commit ba05755c4b
Notes: svn2git 2020-12-20 02:59:44 +00:00
svn path=/head/; revision=101902
10 changed files with 1079 additions and 0 deletions

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@ -23,3 +23,6 @@ ia64_unaligned Tests unaligned reads on the IA64
nfsmmap Some tests to exercise some tricky cases in NFS and mmap
p1003_1b Exercise 1003.1B scheduler
fsx General filesystem exerciser
sysvmsg SysV IPC Message Queue Regression Utility
sysvsem SysV IPC Semaphore Regression Utility
sysvshm SysV IPC Shared Memory Regression Utility

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@ -0,0 +1,15 @@
# $FreeBSD$
# SysV Message Queue Regression Utility
# Obtained from: $NetBSD: Makefile,v 1.3 2002/03/05 21:56:59 thorpej Exp $
PROG= msgtest
NOMAN= yes
regress:
@if ./msgtest ./msgtest; then \
echo "PASS"; \
else \
echo "FAIL"; \
fi
.include <bsd.prog.mk>

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@ -0,0 +1,13 @@
$FreeBSD$
SysV IPC Message Queue Regression Utility.
This regression utility will test the SysV Message Queue facility
in FreeBSD. You can start the test by running ``make regress'', after
running ``make''.
Obtained from: The NetBSD Foundation.
Date of port: 13 August 2002
-- Hiten Pandya
-- hiten@uk.FreeBSD.org

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@ -0,0 +1,347 @@
/*-
* Copyright (c) 1999 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.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* 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.
*
* Obtained from: $NetBSD: msgtest.c,v 1.7 2002/07/20 08:36:25 grant Exp $
* $FreeBSD$
*/
/*
* Test the SVID-compatible Message Queue facility.
*/
#include <sys/param.h>
#include <sys/ipc.h>
#include <sys/msg.h>
#include <sys/wait.h>
#include <err.h>
#include <errno.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
void print_msqid_ds (struct msqid_ds *, mode_t);
void sigsys_handler(int);
void sigchld_handler (int);
void cleanup (void);
void receiver (void);
void usage (void);
#define MESSAGE_TEXT_LEN 255
/*
* Define it as test_mymsg because we already have struct mymsg and we dont
* want to conflict with it. Also, regression fails when the default mymsg
* struct is used, because mtext[] array is '1', so the passed string cannot
* be processed.
*/
struct test_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.";
#define MTYPE_1 1
#define MTYPE_1_ACK 2
#define MTYPE_2 3
#define MTYPE_2_ACK 4
int sender_msqid = -1;
pid_t child_pid;
key_t msgkey;
int
main(int argc, char *argv[])
{
struct sigaction sa;
struct msqid_ds m_ds;
struct test_mymsg m;
sigset_t sigmask;
if (argc != 2)
usage();
/*
* Install a SIGSYS handler so that we can exit gracefully if
* System V Message Queue support isn't in the kernel.
*/
sa.sa_handler = sigsys_handler;
sigemptyset(&sa.sa_mask);
sa.sa_flags = 0;
if (sigaction(SIGSYS, &sa, NULL) == -1)
err(1, "sigaction SIGSYS");
/*
* Install and SIGCHLD handler to deal with all possible exit
* conditions of the receiver.
*/
sa.sa_handler = sigchld_handler;
sigemptyset(&sa.sa_mask);
sa.sa_flags = 0;
if (sigaction(SIGCHLD, &sa, NULL) == -1)
err(1, "sigaction SIGCHLD");
msgkey = ftok(argv[1], 4160);
/*
* Initialize child_pid to ourselves to that the cleanup function
* works before we create the receiver.
*/
child_pid = getpid();
/*
* Make sure that when the sender exits, the message queue is
* removed.
*/
if (atexit(cleanup) == -1)
err(1, "atexit");
if ((sender_msqid = msgget(msgkey, IPC_CREAT | 0640)) == -1)
err(1, "msgget");
if (msgctl(sender_msqid, IPC_STAT, &m_ds) == -1)
err(1, "msgctl IPC_STAT");
print_msqid_ds(&m_ds, 0640);
m_ds.msg_perm.mode = (m_ds.msg_perm.mode & ~0777) | 0600;
if (msgctl(sender_msqid, IPC_SET, &m_ds) == -1)
err(1, "msgctl IPC_SET");
bzero(&m_ds, sizeof m_ds);
if (msgctl(sender_msqid, IPC_STAT, &m_ds) == -1)
err(1, "msgctl IPC_STAT");
if ((m_ds.msg_perm.mode & 0777) != 0600)
err(1, "IPC_SET of mode didn't hold");
print_msqid_ds(&m_ds, 0600);
switch ((child_pid = fork())) {
case -1:
err(1, "fork");
/* NOTREACHED */
case 0:
receiver();
break;
default:
break;
}
/*
* Send the first message to the receiver and wait for the ACK.
*/
m.mtype = MTYPE_1;
strcpy(m.mtext, m1_str);
if (msgsnd(sender_msqid, &m, sizeof(m), 0) == -1)
err(1, "sender: msgsnd 1");
if (msgrcv(sender_msqid, &m, sizeof(m), MTYPE_1_ACK, 0) != sizeof(m))
err(1, "sender: msgrcv 1 ack");
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);
if (msgsnd(sender_msqid, &m, sizeof(m), 0) == -1)
err(1, "sender: msgsnd 2");
if (msgrcv(sender_msqid, &m, sizeof(m), MTYPE_2_ACK, 0) != sizeof(m))
err(1, "sender: msgrcv 2 ack");
/*
* Suspend forever; when we get SIGCHLD, the handler will exit.
*/
sigemptyset(&sigmask);
(void) sigsuspend(&sigmask);
/*
* ...and any other signal is an unexpected error.
*/
errx(1, "sender: received unexpected signal");
}
void
sigsys_handler(int signo)
{
errx(1, "System V Message Queue support is not present in the kernel");
}
void
sigchld_handler(int signo)
{
struct msqid_ds m_ds;
int cstatus;
/*
* Reap the child; if it exited successfully, then the test passed!
*/
if (waitpid(child_pid, &cstatus, 0) != child_pid)
err(1, "waitpid");
if (WIFEXITED(cstatus) == 0)
errx(1, "receiver exited abnormally");
if (WEXITSTATUS(cstatus) != 0)
errx(1, "receiver exited with status %d",
WEXITSTATUS(cstatus));
/*
* If we get here, the child has exited normally, and thus
* we should exit normally too. First, tho, we print out
* the final stats for the message queue.
*/
if (msgctl(sender_msqid, IPC_STAT, &m_ds) == -1)
err(1, "msgctl IPC_STAT");
print_msqid_ds(&m_ds, 0600);
exit(0);
}
void
cleanup()
{
/*
* If we're the sender, and it exists, remove the message queue.
*/
if (child_pid != 0 && sender_msqid != -1) {
if (msgctl(sender_msqid, IPC_RMID, NULL) == -1)
warn("msgctl IPC_RMID");
}
}
void
print_msqid_ds(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.
*/
if (mp->msg_perm.uid != uid || mp->msg_perm.cuid != uid)
errx(1, "uid mismatch");
if (mp->msg_perm.gid != gid || mp->msg_perm.cgid != gid)
errx(1, "gid mismatch");
if ((mp->msg_perm.mode & 0777) != mode)
errx(1, "mode mismatch");
}
void
usage()
{
fprintf(stderr, "usage: %s keypath\n", getprogname());
exit(1);
}
void
receiver()
{
struct test_mymsg m;
int msqid;
if ((msqid = msgget(msgkey, 0)) == -1)
err(1, "receiver: msgget");
/*
* Receive the first message, print it, and send an ACK.
*/
if (msgrcv(msqid, &m, sizeof(m), MTYPE_1, 0) != sizeof(m))
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, sizeof(m), 0) == -1)
err(1, "receiver: msgsnd ack 1");
/*
* Receive the second message, print it, and send an ACK.
*/
if (msgrcv(msqid, &m, sizeof(m), MTYPE_2, 0) != sizeof(m))
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, sizeof(m), 0) == -1)
err(1, "receiver: msgsnd ack 2");
exit(0);
}

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@ -0,0 +1,15 @@
# $FreeBSD$
# SysV Semaphores Regression Utility
# Obtained from: $NetBSD: Makefile,v 1.3 2002/03/05 21:57:00 thorpej Exp $
PROG= semtest
NOMAN= yes
regress:
@if ./semtest ./semtest; then \
echo "PASS"; \
else \
echo "FAIL"; \
fi
.include <bsd.prog.mk>

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@ -0,0 +1,13 @@
$FreeBSD$
SysV IPC Semaphore Regression Utility.
This regression utility will test the SysV semaphore functionality
in FreeBSD. You can start the test by running ``make regress'', after
running ``make''.
Obtained from: NetBSD Foundation Inc.
Date of port: 13 August 2002
-- Hiten Pandya
-- hiten@uk.FreeBSD.org

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@ -0,0 +1,348 @@
/*-
* Copyright (c) 1999 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.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* 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.
*
* Obtained from: $NetBSD: semtest.c,v 1.4 2002/07/20 08:36:25 grant Exp $
* $FreeBSD$
*/
/*
* Test the SVID-compatible Semaphore facility.
*/
#include <sys/param.h>
#include <sys/ipc.h>
#include <sys/sem.h>
#include <sys/wait.h>
#include <err.h>
#include <errno.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
int main (int, char *[]);
void print_semid_ds (struct semid_ds *, mode_t);
void sigsys_handler (int);
void sigchld_handler(int);
void cleanup (void);
void waiter (void);
void usage (void);
int sender_semid = -1;
pid_t child_pid;
int child_count;
int signal_was_sigchld;
key_t semkey;
/*
* This is the original semun union used by the sysvsem utility.
* It is deliberately kept here under #if 0'ed condition for future
* reference. PLEASE DO NOT REMOVE. The {SET,GET}ALL in FreeBSD
* are signed values, so the default version in sys/sem.h suffices.
*/
#if 0
union semun {
int val; /* value for SETVAL */
struct semid_ds *buf; /* buffer for IPC_{STAT,SET} */
u_short *array; /* array for GETALL & SETALL */
};
#endif
int
main(int argc, char *argv[])
{
struct sigaction sa;
union semun sun;
struct semid_ds s_ds;
sigset_t sigmask;
int i;
if (argc != 2)
usage();
/*
* Install a SIGSYS handler so that we can exit gracefully if
* System V Semaphore support isn't in the kernel.
*/
sa.sa_handler = sigsys_handler;
sigemptyset(&sa.sa_mask);
sa.sa_flags = 0;
if (sigaction(SIGSYS, &sa, NULL) == -1)
err(1, "sigaction SIGSYS");
/*
* Install and SIGCHLD handler to deal with all possible exit
* conditions of the receiver.
*/
sa.sa_handler = sigchld_handler;
sigemptyset(&sa.sa_mask);
sa.sa_flags = 0;
if (sigaction(SIGCHLD, &sa, NULL) == -1)
err(1, "sigaction SIGCHLD");
semkey = ftok(argv[1], 4160);
/*
* Initialize child_pid to ourselves to that the cleanup function
* works before we create the receiver.
*/
child_pid = getpid();
/*
* Make sure that when the sender exits, the message queue is
* removed.
*/
if (atexit(cleanup) == -1)
err(1, "atexit");
if ((sender_semid = semget(semkey, 1, IPC_CREAT | 0640)) == -1)
err(1, "semget");
sun.buf = &s_ds;
if (semctl(sender_semid, 0, IPC_STAT, sun) == -1)
err(1, "semctl IPC_STAT");
print_semid_ds(&s_ds, 0640);
s_ds.sem_perm.mode = (s_ds.sem_perm.mode & ~0777) | 0600;
sun.buf = &s_ds;
if (semctl(sender_semid, 0, IPC_SET, sun) == -1)
err(1, "semctl IPC_SET");
memset(&s_ds, 0, sizeof(s_ds));
sun.buf = &s_ds;
if (semctl(sender_semid, 0, IPC_STAT, sun) == -1)
err(1, "semctl IPC_STAT");
if ((s_ds.sem_perm.mode & 0777) != 0600)
err(1, "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:
err(1, "fork");
/* NOTREACHED */
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)
err(1, "semctl GETNCNT");
if (i == 5)
break;
}
/*
* Now set the thundering herd in motion by initializing the
* semaphore to the value 1.
*/
sun.val = 1;
if (semctl(sender_semid, 0, SETVAL, sun) == -1)
err(1, "sender: semctl SETVAL to 1");
/*
* Suspend forever; when we get SIGCHLD, the handler will exit.
*/
sigemptyset(&sigmask);
for (;;) {
(void) sigsuspend(&sigmask);
if (signal_was_sigchld)
signal_was_sigchld = 0;
else
break;
}
/*
* ...and any other signal is an unexpected error.
*/
errx(1, "sender: received unexpected signal");
}
void
sigsys_handler(int signo)
{
errx(1, "System V Semaphore support is not present in the kernel");
}
void
sigchld_handler(int signo)
{
union semun sun;
struct semid_ds s_ds;
int cstatus;
/*
* Reap the child; if it exited successfully, then we're on the
* right track!
*/
if (wait(&cstatus) == -1)
err(1, "wait");
if (WIFEXITED(cstatus) == 0)
errx(1, "receiver exited abnormally");
if (WEXITSTATUS(cstatus) != 0)
errx(1, "receiver exited with status %d",
WEXITSTATUS(cstatus));
/*
* If we get here, the child has exited normally, and we should
* decrement the child count. If the child_count reaches 0, we
* should exit.
*/
sun.buf = &s_ds;
if (semctl(sender_semid, 0, IPC_STAT, sun) == -1)
err(1, "semctl IPC_STAT");
print_semid_ds(&s_ds, 0600);
if (--child_count != 0) {
signal_was_sigchld = 1;
return;
}
exit(0);
}
void
cleanup()
{
/*
* If we're the sender, and it exists, remove the message queue.
*/
if (child_pid != 0 && sender_semid != -1) {
if (semctl(sender_semid, 0, IPC_RMID) == -1)
warn("semctl IPC_RMID");
}
}
void
print_semid_ds(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.
*/
if (sp->sem_perm.uid != uid || sp->sem_perm.cuid != uid)
errx(1, "uid mismatch");
if (sp->sem_perm.gid != gid || sp->sem_perm.cgid != gid)
errx(1, "gid mismatch");
if ((sp->sem_perm.mode & 0777) != mode)
errx(1, "mode mismatch %o != %o",
(sp->sem_perm.mode & 0777), mode);
}
void
usage()
{
fprintf(stderr, "usage: %s keypath\n", getprogname());
exit(1);
}
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);
}

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# $FreeBSD$
# SysV Shared Memory Regression Utility
# Obtained from: $NetBSD: Makefile,v 1.3 2002/03/05 21:57:00 thorpej Exp $
PROG= shmtest
NOMAN= yes
regress:
@if ./shmtest ./shmtest; then \
echo "PASS"; \
else \
echo "FAIL"; \
fi
.include <bsd.prog.mk>

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@ -0,0 +1,13 @@
$FreeBSD$
SysV IPC Shared Memory Regression Utility.
This regression utility will test the SysV Shared Memory facility
in FreeBSD. You can start the test by running ``make regress'', after
running ``make''.
Obtained from: The NetBSD Foundation.
Date of port: 13 August 2002
-- Hiten Pandya
-- hiten@uk.FreeBSD.org

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@ -0,0 +1,297 @@
/*-
* Copyright (c) 1999 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.
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by the NetBSD
* Foundation, Inc. and its contributors.
* 4. Neither the name of The NetBSD Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* 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.
*
* Obtained from: $NetBSD: shmtest.c,v 1.3 2002/07/20 08:36:26 grant Exp $
* $FreeBSD$
*/
/*
* Test the SVID-compatible Shared Memory facility.
*/
#include <sys/param.h>
#include <sys/ipc.h>
#include <sys/shm.h>
#include <sys/wait.h>
#include <err.h>
#include <errno.h>
#include <signal.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
#include <unistd.h>
int main __P((int, char *[]));
void print_shmid_ds __P((struct shmid_ds *, mode_t));
void sigsys_handler __P((int));
void sigchld_handler __P((int));
void cleanup __P((void));
void receiver __P((void));
void usage __P((void));
const char *m_str = "The quick brown fox jumped over the lazy dog.";
int sender_shmid = -1;
pid_t child_pid;
key_t shmkey;
size_t pgsize;
int
main(argc, argv)
int argc;
char *argv[];
{
struct sigaction sa;
struct shmid_ds s_ds;
sigset_t sigmask;
char *shm_buf;
if (argc != 2)
usage();
/*
* Install a SIGSYS handler so that we can exit gracefully if
* System V Shared Memory support isn't in the kernel.
*/
sa.sa_handler = sigsys_handler;
sigemptyset(&sa.sa_mask);
sa.sa_flags = 0;
if (sigaction(SIGSYS, &sa, NULL) == -1)
err(1, "sigaction SIGSYS");
/*
* Install and SIGCHLD handler to deal with all possible exit
* conditions of the receiver.
*/
sa.sa_handler = sigchld_handler;
sigemptyset(&sa.sa_mask);
sa.sa_flags = 0;
if (sigaction(SIGCHLD, &sa, NULL) == -1)
err(1, "sigaction SIGCHLD");
pgsize = sysconf(_SC_PAGESIZE);
shmkey = ftok(argv[1], 4160);
/*
* Initialize child_pid to ourselves to that the cleanup function
* works before we create the receiver.
*/
child_pid = getpid();
/*
* Make sure that when the sender exits, the message queue is
* removed.
*/
if (atexit(cleanup) == -1)
err(1, "atexit");
if ((sender_shmid = shmget(shmkey, pgsize, IPC_CREAT | 0640)) == -1)
err(1, "shmget");
if (shmctl(sender_shmid, IPC_STAT, &s_ds) == -1)
err(1, "shmctl IPC_STAT");
print_shmid_ds(&s_ds, 0640);
s_ds.shm_perm.mode = (s_ds.shm_perm.mode & ~0777) | 0600;
if (shmctl(sender_shmid, IPC_SET, &s_ds) == -1)
err(1, "shmctl IPC_SET");
memset(&s_ds, 0, sizeof(s_ds));
if (shmctl(sender_shmid, IPC_STAT, &s_ds) == -1)
err(1, "shmctl IPC_STAT");
if ((s_ds.shm_perm.mode & 0777) != 0600)
err(1, "IPC_SET of mode didn't hold");
print_shmid_ds(&s_ds, 0600);
if ((shm_buf = shmat(sender_shmid, NULL, 0)) == (void *) -1)
err(1, "sender: shmat");
/*
* Write the test pattern into the shared memory buffer.
*/
strcpy(shm_buf, m_str);
switch ((child_pid = fork())) {
case -1:
err(1, "fork");
/* NOTREACHED */
case 0:
receiver();
break;
default:
break;
}
/*
* Suspend forever; when we get SIGCHLD, the handler will exit.
*/
sigemptyset(&sigmask);
(void) sigsuspend(&sigmask);
/*
* ...and any other signal is an unexpected error.
*/
errx(1, "sender: received unexpected signal");
}
void
sigsys_handler(signo)
int signo;
{
errx(1, "System V Shared Memory support is not present in the kernel");
}
void
sigchld_handler(signo)
int signo;
{
struct shmid_ds s_ds;
int cstatus;
/*
* Reap the child; if it exited successfully, then the test passed!
*/
if (waitpid(child_pid, &cstatus, 0) != child_pid)
err(1, "waitpid");
if (WIFEXITED(cstatus) == 0)
errx(1, "receiver exited abnormally");
if (WEXITSTATUS(cstatus) != 0)
errx(1, "receiver exited with status %d",
WEXITSTATUS(cstatus));
/*
* If we get here, the child has exited normally, and thus
* we should exit normally too. First, tho, we print out
* the final stats for the message queue.
*/
if (shmctl(sender_shmid, IPC_STAT, &s_ds) == -1)
err(1, "shmctl IPC_STAT");
print_shmid_ds(&s_ds, 0600);
exit(0);
}
void
cleanup()
{
/*
* If we're the sender, and it exists, remove the shared memory area.
*/
if (child_pid != 0 && sender_shmid != -1) {
if (shmctl(sender_shmid, IPC_RMID, NULL) == -1)
warn("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.
*/
if (sp->shm_perm.uid != uid || sp->shm_perm.cuid != uid)
errx(1, "uid mismatch");
if (sp->shm_perm.gid != gid || sp->shm_perm.cgid != gid)
errx(1, "gid mismatch");
if ((sp->shm_perm.mode & 0777) != mode)
errx(1, "mode mismatch");
}
void
usage()
{
fprintf(stderr, "usage: %s keypath\n", getprogname());
exit(1);
}
void
receiver()
{
int shmid;
void *shm_buf;
if ((shmid = shmget(shmkey, pgsize, 0)) == -1)
err(1, "receiver: shmget");
if ((shm_buf = shmat(shmid, NULL, 0)) == (void *) -1)
err(1, "receiver: shmat");
printf("%s\n", (const char *)shm_buf);
if (strcmp((const char *)shm_buf, m_str) != 0)
err(1, "receiver: data isn't correct");
exit(0);
}