1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) International Business Machines Corp., 2001
4 */
5
6 /*
7 * DESCRIPTION
8 * Tests if EIDRM is returned when message queue was removed while
9 * msgsnd() was trying to send a message.
10 */
11
12 #include <errno.h>
13 #include <unistd.h>
14 #include <sys/types.h>
15 #include <sys/ipc.h>
16 #include <sys/msg.h>
17
18 #include "tst_test.h"
19 #include "tst_safe_sysv_ipc.h"
20 #include "libnewipc.h"
21
22 static key_t msgkey;
23 static int queue_id = -1;
24 static struct buf {
25 long type;
26 char text[MSGSIZE];
27 } snd_buf = {1, "hello"};
28
verify_msgsnd(void)29 static void verify_msgsnd(void)
30 {
31 TST_EXP_FAIL(msgsnd(queue_id, &snd_buf, MSGSIZE, 0), EIDRM,
32 "msgsnd(%i, %p, %i, 0)", queue_id, &snd_buf, MSGSIZE);
33 }
34
do_test(void)35 static void do_test(void)
36 {
37 pid_t pid;
38
39 queue_id = SAFE_MSGGET(msgkey, IPC_CREAT | IPC_EXCL | MSG_RW);
40
41 while (msgsnd(queue_id, &snd_buf, MSGSIZE, IPC_NOWAIT) != -1)
42 snd_buf.type += 1;
43
44 pid = SAFE_FORK();
45 if (!pid) {
46 verify_msgsnd();
47 _exit(0);
48 }
49
50 TST_PROCESS_STATE_WAIT(pid, 'S', 0);
51
52 SAFE_MSGCTL(queue_id, IPC_RMID, NULL);
53
54 tst_reap_children();
55 }
56
setup(void)57 static void setup(void)
58 {
59 msgkey = GETIPCKEY();
60 }
61
cleanup(void)62 static void cleanup(void)
63 {
64 if (queue_id != -1)
65 SAFE_MSGCTL(queue_id, IPC_RMID, NULL);
66 }
67
68 static struct tst_test test = {
69 .needs_tmpdir = 1,
70 .needs_root = 1,
71 .forks_child = 1,
72 .setup = setup,
73 .cleanup = cleanup,
74 .test_all = do_test
75 };
76