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.
17 * 3. All advertising materials mentioning features or use of this software
18 * must display the following acknowledgement:
19 * This product includes software developed by the NetBSD
20 * Foundation, Inc. and its contributors.
21 * 4. Neither the name of The NetBSD Foundation nor the names of its
22 * contributors may be used to endorse or promote products derived
23 * from this software without specific prior written permission.
25 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
26 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
27 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
28 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
29 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
30 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
31 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
32 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
33 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
34 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
35 * POSSIBILITY OF SUCH DAMAGE.
37 * Obtained from: $NetBSD: msgtest.c,v 1.7 2002/07/20 08:36:25 grant Exp $
42 * Test the SVID-compatible Message Queue facility.
45 #include <sys/param.h>
59 void print_msqid_ds (struct msqid_ds *, mode_t);
60 void sigsys_handler(int);
61 void sigchld_handler (int);
66 #define MESSAGE_TEXT_LEN 255
69 * Define it as test_mymsg because we already have struct mymsg and we dont
70 * want to conflict with it. Also, regression fails when the default mymsg
71 * struct is used, because mtext[] array is '1', so the passed string cannot
76 char mtext[MESSAGE_TEXT_LEN];
79 const char *m1_str = "California is overrated.";
80 const char *m2_str = "The quick brown fox jumped over the lazy dog.";
88 int sender_msqid = -1;
94 main(int argc, char *argv[])
105 * Install a SIGSYS handler so that we can exit gracefully if
106 * System V Message Queue support isn't in the kernel.
108 sa.sa_handler = sigsys_handler;
109 sigemptyset(&sa.sa_mask);
111 if (sigaction(SIGSYS, &sa, NULL) == -1)
112 err(1, "sigaction SIGSYS");
115 * Install and SIGCHLD handler to deal with all possible exit
116 * conditions of the receiver.
118 sa.sa_handler = sigchld_handler;
119 sigemptyset(&sa.sa_mask);
121 if (sigaction(SIGCHLD, &sa, NULL) == -1)
122 err(1, "sigaction SIGCHLD");
124 msgkey = ftok(argv[1], 4160);
127 * Initialize child_pid to ourselves to that the cleanup function
128 * works before we create the receiver.
130 child_pid = getpid();
133 * Make sure that when the sender exits, the message queue is
136 if (atexit(cleanup) == -1)
139 if ((sender_msqid = msgget(msgkey, IPC_CREAT | 0640)) == -1)
142 if (msgctl(sender_msqid, IPC_STAT, &m_ds) == -1)
143 err(1, "msgctl IPC_STAT");
145 print_msqid_ds(&m_ds, 0640);
147 m_ds.msg_perm.mode = (m_ds.msg_perm.mode & ~0777) | 0600;
149 if (msgctl(sender_msqid, IPC_SET, &m_ds) == -1)
150 err(1, "msgctl IPC_SET");
152 bzero(&m_ds, sizeof m_ds);
154 if (msgctl(sender_msqid, IPC_STAT, &m_ds) == -1)
155 err(1, "msgctl IPC_STAT");
157 if ((m_ds.msg_perm.mode & 0777) != 0600)
158 err(1, "IPC_SET of mode didn't hold");
160 print_msqid_ds(&m_ds, 0600);
162 switch ((child_pid = fork())) {
176 * Send the first message to the receiver and wait for the ACK.
179 strcpy(m.mtext, m1_str);
180 if (msgsnd(sender_msqid, &m, strlen(m1_str) + 1, 0) == -1)
181 err(1, "sender: msgsnd 1");
183 if (msgrcv(sender_msqid, &m, sizeof(m.mtext), MTYPE_1_ACK, 0) !=
185 err(1, "sender: msgrcv 1 ack");
187 print_msqid_ds(&m_ds, 0600);
190 * Send the second message to the receiver and wait for the ACK.
193 strcpy(m.mtext, m2_str);
194 if (msgsnd(sender_msqid, &m, strlen(m2_str) + 1, 0) == -1)
195 err(1, "sender: msgsnd 2");
197 if (msgrcv(sender_msqid, &m, sizeof(m.mtext), MTYPE_2_ACK, 0) !=
199 err(1, "sender: msgrcv 2 ack");
202 * Suspend forever; when we get SIGCHLD, the handler will exit.
204 sigemptyset(&sigmask);
205 (void) sigsuspend(&sigmask);
208 * ...and any other signal is an unexpected error.
210 errx(1, "sender: received unexpected signal");
214 sigsys_handler(int signo)
217 errx(1, "System V Message Queue support is not present in the kernel");
221 sigchld_handler(int signo)
223 struct msqid_ds m_ds;
227 * Reap the child; if it exited successfully, then the test passed!
229 if (waitpid(child_pid, &cstatus, 0) != child_pid)
232 if (WIFEXITED(cstatus) == 0)
233 errx(1, "receiver exited abnormally");
235 if (WEXITSTATUS(cstatus) != 0)
236 errx(1, "receiver exited with status %d",
237 WEXITSTATUS(cstatus));
240 * If we get here, the child has exited normally, and thus
241 * we should exit normally too. First, tho, we print out
242 * the final stats for the message queue.
245 if (msgctl(sender_msqid, IPC_STAT, &m_ds) == -1)
246 err(1, "msgctl IPC_STAT");
248 print_msqid_ds(&m_ds, 0600);
258 * If we're the sender, and it exists, remove the message queue.
260 if (child_pid != 0 && sender_msqid != -1) {
261 if (msgctl(sender_msqid, IPC_RMID, NULL) == -1)
262 warn("msgctl IPC_RMID");
267 print_msqid_ds(struct msqid_ds *mp, mode_t mode)
269 uid_t uid = geteuid();
270 gid_t gid = getegid();
272 printf("PERM: uid %d, gid %d, cuid %d, cgid %d, mode 0%o\n",
273 mp->msg_perm.uid, mp->msg_perm.gid,
274 mp->msg_perm.cuid, mp->msg_perm.cgid,
275 mp->msg_perm.mode & 0777);
277 printf("qnum %lu, qbytes %lu, lspid %d, lrpid %d\n",
278 mp->msg_qnum, (u_long)mp->msg_qbytes, mp->msg_lspid,
281 printf("stime: %s", ctime(&mp->msg_stime));
282 printf("rtime: %s", ctime(&mp->msg_rtime));
283 printf("ctime: %s", ctime(&mp->msg_ctime));
286 * Sanity check a few things.
289 if (mp->msg_perm.uid != uid || mp->msg_perm.cuid != uid)
290 errx(1, "uid mismatch");
292 if (mp->msg_perm.gid != gid || mp->msg_perm.cgid != gid)
293 errx(1, "gid mismatch");
295 if ((mp->msg_perm.mode & 0777) != mode)
296 errx(1, "mode mismatch");
303 fprintf(stderr, "usage: %s keypath\n", getprogname());
313 if ((msqid = msgget(msgkey, 0)) == -1)
314 err(1, "receiver: msgget");
317 * Receive the first message, print it, and send an ACK.
320 if (msgrcv(msqid, &m, sizeof(m.mtext), MTYPE_1, 0) !=
322 err(1, "receiver: msgrcv 1");
324 printf("%s\n", m.mtext);
325 if (strcmp(m.mtext, m1_str) != 0)
326 err(1, "receiver: message 1 data isn't correct");
328 m.mtype = MTYPE_1_ACK;
330 if (msgsnd(msqid, &m, strlen(m1_str) + 1, 0) == -1)
331 err(1, "receiver: msgsnd ack 1");
334 * Receive the second message, print it, and send an ACK.
337 if (msgrcv(msqid, &m, sizeof(m.mtext), MTYPE_2, 0) !=
339 err(1, "receiver: msgrcv 2");
341 printf("%s\n", m.mtext);
342 if (strcmp(m.mtext, m2_str) != 0)
343 err(1, "receiver: message 2 data isn't correct");
345 m.mtype = MTYPE_2_ACK;
347 if (msgsnd(msqid, &m, strlen(m2_str) + 1, 0) == -1)
348 err(1, "receiver: msgsnd ack 2");