[src/trunk]: src/regress/sys/kern/sysvshm Add a simple test program for the S...

[thorpej <thorpej%NetBSD.org@localhost>]

details:   https://anonhg.NetBSD.org/src/rev/0e320636e10f
branches:  trunk
changeset: 475740:0e320636e10f
user:      thorpej <thorpej%NetBSD.org@localhost>
date:      Tue Aug 24 23:01:56 1999 +0000

description:
Add a simple test program for the System V Shared Memory facility.

diffstat:

 regress/sys/kern/sysvshm/Makefile  |   14 +
 regress/sys/kern/sysvshm/shmtest.c |  297 +++++++++++++++++++++++++++++++++++++
 2 files changed, 311 insertions(+), 0 deletions(-)

diffs (truncated from 319 to 300 lines):

diff -r 95c9c1d5b823 -r 0e320636e10f regress/sys/kern/sysvshm/Makefile
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/regress/sys/kern/sysvshm/Makefile Tue Aug 24 23:01:56 1999 +0000
@@ -0,0 +1,14 @@
+#      $NetBSD: Makefile,v 1.1 1999/08/24 23:01:56 thorpej Exp $
+
+PROG=  shmtest
+MKMAN= no
+WARNS= 1
+
+regress:
+       @if ./shmtest ${.OBJDIR}/shmtest; then \
+               echo "PASSED"; \
+       else \
+               echo "FAILED"; \
+       fi
+
+.include <bsd.prog.mk>
diff -r 95c9c1d5b823 -r 0e320636e10f regress/sys/kern/sysvshm/shmtest.c
--- /dev/null   Thu Jan 01 00:00:00 1970 +0000
+++ b/regress/sys/kern/sysvshm/shmtest.c        Tue Aug 24 23:01:56 1999 +0000
@@ -0,0 +1,297 @@
+/*     $NetBSD: shmtest.c,v 1.1 1999/08/24 23:01:57 thorpej 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));
+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\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");
+
+       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()
+{
+       extern const char *__progname;
+
+       fprintf(stderr, "usage: %s keypath\n", __progname);
+       exit(1);
+}