test sysv shared memory. From NetBSD with changes.

2 files changed, 316 insertions, 0 deletions

diff --git a/regress/sys/kern/sysvshm/Makefile b/regress/sys/kern/sysvshm/Makefile
new file mode 100644
index 00000000000..53ad9fd3203
--- /dev/null
+++ b/regress/sys/kern/sysvshm/Makefile
@@ -0,0 +1,5 @@
+#	$OpenBSD: Makefile,v 1.1 2002/02/16 14:34:54 art Exp $
+
+PROG=shmtest
+
+.include <bsd.regress.mk>
diff --git a/regress/sys/kern/sysvshm/shmtest.c b/regress/sys/kern/sysvshm/shmtest.c
new file mode 100644
index 00000000000..7b633b9fe2e
--- /dev/null
+++ b/regress/sys/kern/sysvshm/shmtest.c
@@ -0,0 +1,311 @@
+/*	$NetBSD: shmtest.c,v 1.2 2001/02/19 22:44:41 cgd Exp $	*/
+
+/*-
+ * 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.
+ */
+
+/*
+ * 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));
+
+const char *m_str = "The quick brown fox jumped over the lazy dog.";
+
+int	sender_shmid = -1;
+pid_t	child_pid;
+
+key_t	shmkey;
+
+char keyname[] = "/tmp/msgtestXXXXXXXX";
+
+int verbose;
+
+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;
+	int fd, ch;
+
+	if ((fd = mkstemp(keyname)) < 0)
+		err(1, "mkstemp");
+
+	close(fd);
+
+	while ((ch = getopt(argc, argv, "v")) != -1) {
+		switch (ch) {
+		case 'v':
+			verbose = 1;
+			break;
+		default:
+			fprintf(stderr, "Usage: shmtest [-v]\n");
+			exit(1);
+		}
+	}
+
+	/*
+	 * 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");
+
+	if (verbose)
+		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");
+
+	if (verbose)
+		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\n",
+		    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");
+
+	if (verbose)
+		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");
+	}
+
+	remove(keyname);
+}
+
+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
+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");
+
+	if (verbose)
+		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);
+}