| // SPDX-License-Identifier: GPL-2.0-or-later |
| /* |
| * Copyright (c) International Business Machines Corp., 2001 |
| */ |
| |
| /* |
| * DESCRIPTION |
| * Tests if EIDRM is returned when message queue was removed while |
| * msgsnd() was trying to send a message. |
| */ |
| |
| #include <errno.h> |
| #include <unistd.h> |
| #include <sys/types.h> |
| #include <sys/ipc.h> |
| #include <sys/msg.h> |
| |
| #include "tst_test.h" |
| #include "tst_safe_sysv_ipc.h" |
| #include "libnewipc.h" |
| |
| static key_t msgkey; |
| static int queue_id = -1; |
| static struct buf { |
| long type; |
| char text[MSGSIZE]; |
| } snd_buf = {1, "hello"}; |
| |
| static void verify_msgsnd(void) |
| { |
| TEST(msgsnd(queue_id, &snd_buf, MSGSIZE, 0)); |
| if (TST_RET != -1) { |
| tst_res(TFAIL, "msgsnd() succeeded unexpectedly"); |
| return; |
| } |
| |
| if (TST_ERR == EIDRM) { |
| tst_res(TPASS | TTERRNO, "msgsnd() failed as expected"); |
| } else { |
| tst_res(TFAIL | TTERRNO, |
| "msgsnd() failed unexpectedly, expected EIDRM"); |
| } |
| } |
| |
| static void do_test(void) |
| { |
| pid_t pid; |
| |
| queue_id = SAFE_MSGGET(msgkey, IPC_CREAT | IPC_EXCL | MSG_RW); |
| |
| while (msgsnd(queue_id, &snd_buf, MSGSIZE, IPC_NOWAIT) != -1) |
| snd_buf.type += 1; |
| |
| pid = SAFE_FORK(); |
| if (!pid) { |
| verify_msgsnd(); |
| _exit(0); |
| } |
| |
| TST_PROCESS_STATE_WAIT(pid, 'S', 0); |
| |
| SAFE_MSGCTL(queue_id, IPC_RMID, NULL); |
| |
| tst_reap_children(); |
| } |
| |
| static void setup(void) |
| { |
| msgkey = GETIPCKEY(); |
| } |
| |
| static void cleanup(void) |
| { |
| if (queue_id != -1) |
| SAFE_MSGCTL(queue_id, IPC_RMID, NULL); |
| } |
| |
| static struct tst_test test = { |
| .needs_tmpdir = 1, |
| .needs_root = 1, |
| .forks_child = 1, |
| .setup = setup, |
| .cleanup = cleanup, |
| .test_all = do_test |
| }; |