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 TEST(msgsnd(queue_id, &snd_buf, MSGSIZE, 0));
32 if (TST_RET != -1) {
33 tst_res(TFAIL, "msgsnd() succeeded unexpectedly");
34 return;
35 }
36
37 if (TST_ERR == EIDRM) {
38 tst_res(TPASS | TTERRNO, "msgsnd() failed as expected");
39 } else {
40 tst_res(TFAIL | TTERRNO,
41 "msgsnd() failed unexpectedly, expected EIDRM");
42 }
43 }
44
do_test(void)45 static void do_test(void)
46 {
47 pid_t pid;
48
49 queue_id = SAFE_MSGGET(msgkey, IPC_CREAT | IPC_EXCL | MSG_RW);
50
51 while (msgsnd(queue_id, &snd_buf, MSGSIZE, IPC_NOWAIT) != -1)
52 snd_buf.type += 1;
53
54 pid = SAFE_FORK();
55 if (!pid) {
56 verify_msgsnd();
57 _exit(0);
58 }
59
60 TST_PROCESS_STATE_WAIT(pid, 'S');
61
62 SAFE_MSGCTL(queue_id, IPC_RMID, NULL);
63
64 tst_reap_children();
65 }
66
setup(void)67 static void setup(void)
68 {
69 msgkey = GETIPCKEY();
70 }
71
cleanup(void)72 static void cleanup(void)
73 {
74 if (queue_id != -1)
75 SAFE_MSGCTL(queue_id, IPC_RMID, NULL);
76 }
77
78 static struct tst_test test = {
79 .needs_tmpdir = 1,
80 .needs_root = 1,
81 .forks_child = 1,
82 .setup = setup,
83 .cleanup = cleanup,
84 .test_all = do_test
85 };
86