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 $
35 * Test the SVID-compatible Message Queue facility.
38 #include <sys/types.h>
52 void print_msqid_ds (struct msqid_ds *, mode_t);
53 void sigsys_handler(int);
54 void sigchld_handler (int);
59 #define MESSAGE_TEXT_LEN 255
62 * Define it as test_mymsg because we already have struct mymsg and we dont
63 * want to conflict with it. Also, regression fails when the default mymsg
64 * struct is used, because mtext[] array is '1', so the passed string cannot
69 char mtext[MESSAGE_TEXT_LEN];
72 const char *m1_str = "California is overrated.";
73 const char *m2_str = "The quick brown fox jumped over the lazy dog.";
81 int sender_msqid = -1;
87 main(int argc, char *argv[])
98 * Install a SIGSYS handler so that we can exit gracefully if
99 * System V Message Queue support isn't in the kernel.
101 sa.sa_handler = sigsys_handler;
102 sigemptyset(&sa.sa_mask);
104 if (sigaction(SIGSYS, &sa, NULL) == -1)
105 err(1, "sigaction SIGSYS");
108 * Install and SIGCHLD handler to deal with all possible exit
109 * conditions of the receiver.
111 sa.sa_handler = sigchld_handler;
112 sigemptyset(&sa.sa_mask);
114 if (sigaction(SIGCHLD, &sa, NULL) == -1)
115 err(1, "sigaction SIGCHLD");
117 msgkey = ftok(argv[1], 4160);
120 * Initialize child_pid to ourselves to that the cleanup function
121 * works before we create the receiver.
123 child_pid = getpid();
126 * Make sure that when the sender exits, the message queue is
129 if (atexit(cleanup) == -1)
132 if ((sender_msqid = msgget(msgkey, IPC_CREAT | 0640)) == -1)
135 if (msgctl(sender_msqid, IPC_STAT, &m_ds) == -1)
136 err(1, "msgctl IPC_STAT");
138 print_msqid_ds(&m_ds, 0640);
140 m_ds.msg_perm.mode = (m_ds.msg_perm.mode & ~0777) | 0600;
142 if (msgctl(sender_msqid, IPC_SET, &m_ds) == -1)
143 err(1, "msgctl IPC_SET");
145 bzero(&m_ds, sizeof m_ds);
147 if (msgctl(sender_msqid, IPC_STAT, &m_ds) == -1)
148 err(1, "msgctl IPC_STAT");
150 if ((m_ds.msg_perm.mode & 0777) != 0600)
151 err(1, "IPC_SET of mode didn't hold");
153 print_msqid_ds(&m_ds, 0600);
155 switch ((child_pid = fork())) {
169 * Send the first message to the receiver and wait for the ACK.
172 strcpy(m.mtext, m1_str);
173 if (msgsnd(sender_msqid, &m, strlen(m1_str) + 1, 0) == -1)
174 err(1, "sender: msgsnd 1");
176 if (msgrcv(sender_msqid, &m, sizeof(m.mtext), MTYPE_1_ACK, 0) !=
178 err(1, "sender: msgrcv 1 ack");
180 print_msqid_ds(&m_ds, 0600);
183 * Send the second message to the receiver and wait for the ACK.
186 strcpy(m.mtext, m2_str);
187 if (msgsnd(sender_msqid, &m, strlen(m2_str) + 1, 0) == -1)
188 err(1, "sender: msgsnd 2");
190 if (msgrcv(sender_msqid, &m, sizeof(m.mtext), MTYPE_2_ACK, 0) !=
192 err(1, "sender: msgrcv 2 ack");
195 * Suspend forever; when we get SIGCHLD, the handler will exit.
197 sigemptyset(&sigmask);
198 (void) sigsuspend(&sigmask);
201 * ...and any other signal is an unexpected error.
203 errx(1, "sender: received unexpected signal");
207 sigsys_handler(int signo)
210 errx(1, "System V Message Queue support is not present in the kernel");
214 sigchld_handler(int signo)
216 struct msqid_ds m_ds;
220 * Reap the child; if it exited successfully, then the test passed!
222 if (waitpid(child_pid, &cstatus, 0) != child_pid)
225 if (WIFEXITED(cstatus) == 0)
226 errx(1, "receiver exited abnormally");
228 if (WEXITSTATUS(cstatus) != 0)
229 errx(1, "receiver exited with status %d",
230 WEXITSTATUS(cstatus));
233 * If we get here, the child has exited normally, and thus
234 * we should exit normally too. First, tho, we print out
235 * the final stats for the message queue.
238 if (msgctl(sender_msqid, IPC_STAT, &m_ds) == -1)
239 err(1, "msgctl IPC_STAT");
241 print_msqid_ds(&m_ds, 0600);
251 * If we're the sender, and it exists, remove the message queue.
253 if (child_pid != 0 && sender_msqid != -1) {
254 if (msgctl(sender_msqid, IPC_RMID, NULL) == -1)
255 warn("msgctl IPC_RMID");
260 print_msqid_ds(struct msqid_ds *mp, mode_t mode)
262 uid_t uid = geteuid();
263 gid_t gid = getegid();
265 printf("PERM: uid %d, gid %d, cuid %d, cgid %d, mode 0%o\n",
266 mp->msg_perm.uid, mp->msg_perm.gid,
267 mp->msg_perm.cuid, mp->msg_perm.cgid,
268 mp->msg_perm.mode & 0777);
270 printf("qnum %lu, qbytes %lu, lspid %d, lrpid %d\n",
271 mp->msg_qnum, (u_long)mp->msg_qbytes, mp->msg_lspid,
274 printf("stime: %s", ctime(&mp->msg_stime));
275 printf("rtime: %s", ctime(&mp->msg_rtime));
276 printf("ctime: %s", ctime(&mp->msg_ctime));
279 * Sanity check a few things.
282 if (mp->msg_perm.uid != uid || mp->msg_perm.cuid != uid)
283 errx(1, "uid mismatch");
285 if (mp->msg_perm.gid != gid || mp->msg_perm.cgid != gid)
286 errx(1, "gid mismatch");
288 if ((mp->msg_perm.mode & 0777) != mode)
289 errx(1, "mode mismatch");
296 fprintf(stderr, "usage: %s keypath\n", getprogname());
306 if ((msqid = msgget(msgkey, 0)) == -1)
307 err(1, "receiver: msgget");
310 * Receive the first message, print it, and send an ACK.
313 if (msgrcv(msqid, &m, sizeof(m.mtext), MTYPE_1, 0) !=
315 err(1, "receiver: msgrcv 1");
317 printf("%s\n", m.mtext);
318 if (strcmp(m.mtext, m1_str) != 0)
319 err(1, "receiver: message 1 data isn't correct");
321 m.mtype = MTYPE_1_ACK;
323 if (msgsnd(msqid, &m, strlen(m1_str) + 1, 0) == -1)
324 err(1, "receiver: msgsnd ack 1");
327 * Receive the second message, print it, and send an ACK.
330 if (msgrcv(msqid, &m, sizeof(m.mtext), MTYPE_2, 0) !=
332 err(1, "receiver: msgrcv 2");
334 printf("%s\n", m.mtext);
335 if (strcmp(m.mtext, m2_str) != 0)
336 err(1, "receiver: message 2 data isn't correct");
338 m.mtype = MTYPE_2_ACK;
340 if (msgsnd(msqid, &m, strlen(m2_str) + 1, 0) == -1)
341 err(1, "receiver: msgsnd ack 2");