85 lines
2.0 KiB
C
85 lines
2.0 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) 2015 Author: Gabriellla Schmidt <gsc@bruker.de>
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* Modify: Li Wang <liwang@redhat.com>
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* A regression test for:
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* commit e7ca2552369c1dfe0216c626baf82c3d83ec36bb
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* Author: Mateusz Guzik <mguzik@redhat.com>
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* Date: Mon Jan 27 17:07:11 2014 -0800
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*
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* ipc: fix compat msgrcv with negative msgtyp
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*
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* Reproduce:
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*
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* 32-bit application using the msgrcv() system call
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* gives the error message:
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*
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* msgrcv: No message of desired type
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*
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* If this progarm is compiled as 64-bit application it works.
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*/
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#include <stdio.h>
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#include <string.h>
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#include <unistd.h>
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#include <sys/types.h>
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#include <sys/ipc.h>
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#include <sys/msg.h>
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#include "tst_test.h"
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#include "tst_safe_sysv_ipc.h"
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#include "libnewipc.h"
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static long mtype = 121;
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static key_t msgkey;
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static int queue_id = -1;
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static struct mbuf {
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long mtype;
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char mtext[16];
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} rcv_buf, snd_buf = {121, "hello"};
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static void verify_msgrcv(void)
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{
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memset(&rcv_buf, 0, sizeof(rcv_buf));
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SAFE_MSGSND(queue_id, &snd_buf, sizeof(snd_buf.mtext), IPC_NOWAIT);
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TEST(msgrcv(queue_id, &rcv_buf, sizeof(rcv_buf.mtext), -mtype, IPC_NOWAIT | MSG_NOERROR));
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if (TST_RET == -1) {
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tst_res(TFAIL, "Bug: No message of desired type.");
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return;
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}
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if (rcv_buf.mtype != mtype) {
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tst_res(TFAIL, "found mtype %ld, expected %ld", rcv_buf.mtype, mtype);
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return;
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}
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if ((size_t)TST_RET != sizeof(snd_buf.mtext)) {
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tst_res(TFAIL, "received %zi, expected %zu", (size_t)TST_RET, sizeof(snd_buf.mtext));
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return;
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}
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tst_res(TPASS, "No regression found.");
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}
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static void setup(void)
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{
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msgkey = GETIPCKEY();
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queue_id = SAFE_MSGGET(msgkey, IPC_CREAT | IPC_EXCL | MSG_RW);
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}
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static void cleanup(void)
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{
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if (queue_id != -1)
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SAFE_MSGCTL(queue_id, IPC_RMID, NULL);
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}
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static struct tst_test test = {
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.needs_tmpdir = 1,
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.setup = setup,
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.cleanup = cleanup,
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.test_all = verify_msgrcv,
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.tags = (const struct tst_tag[]) {
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{"linux-git", "e7ca2552369c"},
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{}
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}
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};
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