2 * Copyright (c) 1999 The NetBSD Foundation, Inc.
5 * This code is derived from software contributed to The NetBSD Foundation
6 * by Jason R. Thorpe of the Numerical Aerospace Simulation Facility,
7 * NASA Ames Research Center.
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
18 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
19 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
20 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
21 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
22 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
23 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
24 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
25 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
26 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
27 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
28 * POSSIBILITY OF SUCH DAMAGE.
30 * Obtained from: $NetBSD: msgtest.c,v 1.7 2002/07/20 08:36:25 grant Exp $
34 * Test the SVID-compatible Message Queue facility.
37 #include <sys/types.h>
51 void print_msqid_ds (struct msqid_ds *, mode_t);
52 void sigsys_handler(int);
53 void sigchld_handler (int);
58 #define MESSAGE_TEXT_LEN 255
61 * Define it as test_mymsg because we already have struct mymsg and we dont
62 * want to conflict with it. Also, regression fails when the default mymsg
63 * struct is used, because mtext[] array is '1', so the passed string cannot
68 char mtext[MESSAGE_TEXT_LEN];
71 const char *m1_str = "California is overrated.";
72 const char *m2_str = "The quick brown fox jumped over the lazy dog.";
80 int sender_msqid = -1;
86 main(int argc, char *argv[])
97 * Install a SIGSYS handler so that we can exit gracefully if
98 * System V Message Queue support isn't in the kernel.
100 sa.sa_handler = sigsys_handler;
101 sigemptyset(&sa.sa_mask);
103 if (sigaction(SIGSYS, &sa, NULL) == -1)
104 err(1, "sigaction SIGSYS");
107 * Install and SIGCHLD handler to deal with all possible exit
108 * conditions of the receiver.
110 sa.sa_handler = sigchld_handler;
111 sigemptyset(&sa.sa_mask);
113 if (sigaction(SIGCHLD, &sa, NULL) == -1)
114 err(1, "sigaction SIGCHLD");
116 msgkey = ftok(argv[1], 4160);
119 * Initialize child_pid to ourselves to that the cleanup function
120 * works before we create the receiver.
122 child_pid = getpid();
125 * Make sure that when the sender exits, the message queue is
128 if (atexit(cleanup) == -1)
131 if ((sender_msqid = msgget(msgkey, IPC_CREAT | 0640)) == -1)
134 if (msgctl(sender_msqid, IPC_STAT, &m_ds) == -1)
135 err(1, "msgctl IPC_STAT");
137 print_msqid_ds(&m_ds, 0640);
139 m_ds.msg_perm.mode = (m_ds.msg_perm.mode & ~0777) | 0600;
141 if (msgctl(sender_msqid, IPC_SET, &m_ds) == -1)
142 err(1, "msgctl IPC_SET");
144 bzero(&m_ds, sizeof m_ds);
146 if (msgctl(sender_msqid, IPC_STAT, &m_ds) == -1)
147 err(1, "msgctl IPC_STAT");
149 if ((m_ds.msg_perm.mode & 0777) != 0600)
150 err(1, "IPC_SET of mode didn't hold");
152 print_msqid_ds(&m_ds, 0600);
154 switch ((child_pid = fork())) {
168 * Send the first message to the receiver and wait for the ACK.
171 strcpy(m.mtext, m1_str);
172 if (msgsnd(sender_msqid, &m, strlen(m1_str) + 1, 0) == -1)
173 err(1, "sender: msgsnd 1");
175 if (msgrcv(sender_msqid, &m, sizeof(m.mtext), MTYPE_1_ACK, 0) !=
177 err(1, "sender: msgrcv 1 ack");
179 print_msqid_ds(&m_ds, 0600);
182 * Send the second message to the receiver and wait for the ACK.
185 strcpy(m.mtext, m2_str);
186 if (msgsnd(sender_msqid, &m, strlen(m2_str) + 1, 0) == -1)
187 err(1, "sender: msgsnd 2");
189 if (msgrcv(sender_msqid, &m, sizeof(m.mtext), MTYPE_2_ACK, 0) !=
191 err(1, "sender: msgrcv 2 ack");
194 * Suspend forever; when we get SIGCHLD, the handler will exit.
196 sigemptyset(&sigmask);
197 (void) sigsuspend(&sigmask);
200 * ...and any other signal is an unexpected error.
202 errx(1, "sender: received unexpected signal");
206 sigsys_handler(int signo)
209 errx(1, "System V Message Queue support is not present in the kernel");
213 sigchld_handler(int signo)
215 struct msqid_ds m_ds;
219 * Reap the child; if it exited successfully, then the test passed!
221 if (waitpid(child_pid, &cstatus, 0) != child_pid)
224 if (WIFEXITED(cstatus) == 0)
225 errx(1, "receiver exited abnormally");
227 if (WEXITSTATUS(cstatus) != 0)
228 errx(1, "receiver exited with status %d",
229 WEXITSTATUS(cstatus));
232 * If we get here, the child has exited normally, and thus
233 * we should exit normally too. First, tho, we print out
234 * the final stats for the message queue.
237 if (msgctl(sender_msqid, IPC_STAT, &m_ds) == -1)
238 err(1, "msgctl IPC_STAT");
240 print_msqid_ds(&m_ds, 0600);
250 * If we're the sender, and it exists, remove the message queue.
252 if (child_pid != 0 && sender_msqid != -1) {
253 if (msgctl(sender_msqid, IPC_RMID, NULL) == -1)
254 warn("msgctl IPC_RMID");
259 print_msqid_ds(struct msqid_ds *mp, mode_t mode)
261 uid_t uid = geteuid();
262 gid_t gid = getegid();
264 printf("PERM: uid %d, gid %d, cuid %d, cgid %d, mode 0%o\n",
265 mp->msg_perm.uid, mp->msg_perm.gid,
266 mp->msg_perm.cuid, mp->msg_perm.cgid,
267 mp->msg_perm.mode & 0777);
269 printf("qnum %lu, qbytes %lu, lspid %d, lrpid %d\n",
270 mp->msg_qnum, (u_long)mp->msg_qbytes, mp->msg_lspid,
273 printf("stime: %s", ctime(&mp->msg_stime));
274 printf("rtime: %s", ctime(&mp->msg_rtime));
275 printf("ctime: %s", ctime(&mp->msg_ctime));
278 * Sanity check a few things.
281 if (mp->msg_perm.uid != uid || mp->msg_perm.cuid != uid)
282 errx(1, "uid mismatch");
284 if (mp->msg_perm.gid != gid || mp->msg_perm.cgid != gid)
285 errx(1, "gid mismatch");
287 if ((mp->msg_perm.mode & 0777) != mode)
288 errx(1, "mode mismatch");
295 fprintf(stderr, "usage: %s keypath\n", getprogname());
305 if ((msqid = msgget(msgkey, 0)) == -1)
306 err(1, "receiver: msgget");
309 * Receive the first message, print it, and send an ACK.
312 if (msgrcv(msqid, &m, sizeof(m.mtext), MTYPE_1, 0) !=
314 err(1, "receiver: msgrcv 1");
316 printf("%s\n", m.mtext);
317 if (strcmp(m.mtext, m1_str) != 0)
318 err(1, "receiver: message 1 data isn't correct");
320 m.mtype = MTYPE_1_ACK;
322 if (msgsnd(msqid, &m, strlen(m1_str) + 1, 0) == -1)
323 err(1, "receiver: msgsnd ack 1");
326 * Receive the second message, print it, and send an ACK.
329 if (msgrcv(msqid, &m, sizeof(m.mtext), MTYPE_2, 0) !=
331 err(1, "receiver: msgrcv 2");
333 printf("%s\n", m.mtext);
334 if (strcmp(m.mtext, m2_str) != 0)
335 err(1, "receiver: message 2 data isn't correct");
337 m.mtype = MTYPE_2_ACK;
339 if (msgsnd(msqid, &m, strlen(m2_str) + 1, 0) == -1)
340 err(1, "receiver: msgsnd ack 2");