1 /* $NetBSD: t_msgrcv.c,v 1.3 2013/07/24 11:44:10 skrll Exp $ */
4 * Copyright (c) 2011 The NetBSD Foundation, Inc.
7 * This code is derived from software contributed to The NetBSD Foundation
10 * Redistribution and use in source and binary forms, with or without
11 * modification, are permitted provided that the following conditions
13 * 1. Redistributions of source code must retain the above copyright
14 * notice, this list of conditions and the following disclaimer.
15 * 2. Redistributions in binary form must reproduce the above copyright
16 * notice, this list of conditions and the following disclaimer in the
17 * documentation and/or other materials provided with the distribution.
19 * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
20 * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
21 * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
22 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
23 * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
29 * POSSIBILITY OF SUCH DAMAGE.
31 #include <sys/cdefs.h>
32 __RCSID("$NetBSD: t_msgrcv.c,v 1.3 2013/07/24 11:44:10 skrll Exp $");
36 #include <sys/sysctl.h>
55 #define MSG_MTYPE_1 0x41
56 #define MSG_MTYPE_2 0x42
57 #define MSG_MTYPE_3 0x43
65 static void clean(void);
72 if ((id = msgget(MSG_KEY, 0)) != -1)
73 (void)msgctl(id, IPC_RMID, 0);
76 ATF_TC_WITH_CLEANUP(msgrcv_basic);
77 ATF_TC_HEAD(msgrcv_basic, tc)
79 atf_tc_set_md_var(tc, "descr", "A basic test of msgrcv(2)");
82 ATF_TC_BODY(msgrcv_basic, tc)
84 struct msg msg1 = { MSG_MTYPE_1, { 'a', 'b', 'c' } };
85 struct msg msg2 = { MSG_MTYPE_1, { 'x', 'y', 'z' } };
88 id = msgget(MSG_KEY, IPC_CREAT | 0600);
89 ATF_REQUIRE(id != -1);
91 (void)msgsnd(id, &msg1, MSG_LEN, IPC_NOWAIT);
92 (void)msgrcv(id, &msg2, MSG_LEN, MSG_MTYPE_1, IPC_NOWAIT);
94 ATF_CHECK(msg1.buf[0] == msg2.buf[0]);
95 ATF_CHECK(msg1.buf[1] == msg2.buf[1]);
96 ATF_CHECK(msg1.buf[2] == msg2.buf[2]);
98 ATF_REQUIRE(msgctl(id, IPC_RMID, 0) == 0);
101 ATF_TC_CLEANUP(msgrcv_basic, tc)
106 ATF_TC_WITH_CLEANUP(msgrcv_block);
107 ATF_TC_HEAD(msgrcv_block, tc)
109 atf_tc_set_md_var(tc, "descr", "Test that msgrcv(2) blocks");
112 ATF_TC_BODY(msgrcv_block, tc)
114 struct msg msg = { MSG_MTYPE_1, { 'a', 'b', 'c' } };
118 id = msgget(MSG_KEY, IPC_CREAT | 0600);
119 ATF_REQUIRE(id != -1);
122 ATF_REQUIRE(pid >= 0);
126 if (msgrcv(id, &msg, MSG_LEN, MSG_MTYPE_1, 0) < 0)
133 * Below msgsnd(2) should unblock the child,
134 * and hence kill(2) should fail with ESRCH.
137 (void)msgsnd(id, &msg, MSG_LEN, IPC_NOWAIT);
139 (void)kill(pid, SIGKILL);
142 if (WIFEXITED(sta) == 0 || WIFSIGNALED(sta) != 0)
143 atf_tc_fail("msgrcv(2) did not block");
145 ATF_REQUIRE(msgctl(id, IPC_RMID, 0) == 0);
148 ATF_TC_CLEANUP(msgrcv_block, tc)
153 ATF_TC_WITH_CLEANUP(msgrcv_err);
154 ATF_TC_HEAD(msgrcv_err, tc)
156 atf_tc_set_md_var(tc, "descr", "Test errors from msgrcv(2)");
159 ATF_TC_BODY(msgrcv_err, tc)
161 struct msg msg = { MSG_MTYPE_1, { 'a', 'b', 'c' } };
164 id = msgget(MSG_KEY, IPC_CREAT | 0600);
165 ATF_REQUIRE(id != -1);
169 ATF_REQUIRE_ERRNO(ENOMSG, msgrcv(id, &msg,
170 MSG_LEN, MSG_MTYPE_1, IPC_NOWAIT) == -1);
172 ATF_REQUIRE(msgsnd(id, &msg, MSG_LEN, IPC_NOWAIT) == 0);
176 ATF_REQUIRE_ERRNO(EFAULT, msgrcv(id, (void *)-1,
177 MSG_LEN, MSG_MTYPE_1, IPC_NOWAIT) == -1);
181 ATF_REQUIRE_ERRNO(EINVAL, msgrcv(-1, &msg,
182 MSG_LEN, MSG_MTYPE_1, IPC_NOWAIT) == -1);
186 ATF_REQUIRE_ERRNO(EINVAL, msgrcv(-1, &msg,
187 SSIZE_MAX, MSG_MTYPE_1, IPC_NOWAIT) == -1);
189 ATF_REQUIRE(msgsnd(id, &msg, MSG_LEN, IPC_NOWAIT) == 0);
193 ATF_REQUIRE_ERRNO(E2BIG, msgrcv(id, &r,
194 MSG_LEN - 1, MSG_MTYPE_1, IPC_NOWAIT) == -1);
196 ATF_REQUIRE(msgctl(id, IPC_RMID, 0) == 0);
199 ATF_TC_CLEANUP(msgrcv_err, tc)
205 ATF_TC_WITH_CLEANUP(msgrcv_mtype);
206 ATF_TC_HEAD(msgrcv_mtype, tc)
208 atf_tc_set_md_var(tc, "descr", "Test message types with msgrcv(2)");
211 ATF_TC_BODY(msgrcv_mtype, tc)
213 struct msg msg1 = { MSG_MTYPE_1, { 'a', 'b', 'c' } };
214 struct msg msg2 = { MSG_MTYPE_3, { 'x', 'y', 'z' } };
217 id = msgget(MSG_KEY, IPC_CREAT | 0600);
218 ATF_REQUIRE(id != -1);
220 (void)msgsnd(id, &msg1, MSG_LEN, IPC_NOWAIT);
221 (void)msgrcv(id, &msg2, MSG_LEN, MSG_MTYPE_2, IPC_NOWAIT);
223 ATF_CHECK(msg1.buf[0] != msg2.buf[0]); /* Different mtype. */
224 ATF_CHECK(msg1.buf[1] != msg2.buf[1]);
225 ATF_CHECK(msg1.buf[2] != msg2.buf[2]);
227 (void)msgrcv(id, &msg2, MSG_LEN, MSG_MTYPE_1, IPC_NOWAIT);
229 ATF_CHECK(msg1.buf[0] == msg2.buf[0]); /* Same mtype. */
230 ATF_CHECK(msg1.buf[1] == msg2.buf[1]);
231 ATF_CHECK(msg1.buf[2] == msg2.buf[2]);
233 ATF_REQUIRE(msgctl(id, IPC_RMID, 0) == 0);
236 ATF_TC_CLEANUP(msgrcv_mtype, tc)
241 ATF_TC_WITH_CLEANUP(msgrcv_nonblock);
242 ATF_TC_HEAD(msgrcv_nonblock, tc)
244 atf_tc_set_md_var(tc, "descr", "Test msgrcv(2) with IPC_NOWAIT");
245 atf_tc_set_md_var(tc, "timeout", "10");
248 ATF_TC_BODY(msgrcv_nonblock, tc)
250 struct msg msg = { MSG_MTYPE_1, { 'a', 'b', 'c' } };
251 const ssize_t n = 10;
256 id = msgget(MSG_KEY, IPC_CREAT | 0600);
257 ATF_REQUIRE(id != -1);
259 for (i = 0; i < n; i++) {
261 ATF_REQUIRE(msgsnd(id, &msg, MSG_LEN, IPC_NOWAIT) == 0);
265 ATF_REQUIRE(pid >= 0);
271 if (msgrcv(id, &msg, MSG_LEN, MSG_MTYPE_1,
282 (void)kill(pid, SIGKILL);
285 if (WIFSIGNALED(sta) != 0 || WTERMSIG(sta) == SIGKILL)
286 atf_tc_fail("msgrcv(2) blocked with IPC_NOWAIT");
288 if (WIFEXITED(sta) == 0 && WEXITSTATUS(sta) != EXIT_SUCCESS)
289 atf_tc_fail("msgrcv(2) failed");
291 ATF_REQUIRE(msgctl(id, IPC_RMID, 0) == 0);
294 ATF_TC_CLEANUP(msgrcv_nonblock, tc)
299 ATF_TC_WITH_CLEANUP(msgrcv_truncate);
300 ATF_TC_HEAD(msgrcv_truncate, tc)
302 atf_tc_set_md_var(tc, "descr", "Test msgrcv(2) with MSG_NOERROR");
305 ATF_TC_BODY(msgrcv_truncate, tc)
307 #define MSG_SMALLLEN 2
310 char buf[MSG_SMALLLEN];
313 struct msg msg1 = { MSG_MTYPE_1, { 'a', 'b', 'c' } };
314 struct msgsmall msg2 = { MSG_MTYPE_1, { 'x', 'y' } };
317 id = msgget(MSG_KEY, IPC_CREAT | 0600);
318 ATF_REQUIRE(id != -1);
320 (void)msgsnd(id, &msg1, MSG_LEN, IPC_NOWAIT);
321 (void)msgrcv(id, &msg2, MSG_SMALLLEN,
322 MSG_MTYPE_1, IPC_NOWAIT | MSG_NOERROR);
324 ATF_CHECK(msg1.buf[0] == msg2.buf[0]);
325 ATF_CHECK(msg1.buf[1] == msg2.buf[1]);
327 ATF_REQUIRE(msgctl(id, IPC_RMID, 0) == 0);
330 ATF_TC_CLEANUP(msgrcv_truncate, tc)
338 ATF_TP_ADD_TC(tp, msgrcv_basic);
339 ATF_TP_ADD_TC(tp, msgrcv_block);
340 ATF_TP_ADD_TC(tp, msgrcv_err);
341 ATF_TP_ADD_TC(tp, msgrcv_mtype);
342 ATF_TP_ADD_TC(tp, msgrcv_nonblock);
343 ATF_TP_ADD_TC(tp, msgrcv_truncate);
345 return atf_no_error();