1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Copyright (c) Huawei Technologies Co., Ltd. 2021. All rights reserved.
4 * Author: Xie Ziyao <xieziyao@huawei.com>
5 */
6
7/*\
8 * [Description]
9 *
10 * Basic test for epoll_pwait and epoll_pwait2. Checks if data avaiable in a
11 * file descriptor are reported correctly in the syscall return value.
12 */
13
14#include <sys/epoll.h>
15
16#include "tst_test.h"
17#include "epoll_pwait_var.h"
18
19static int efd, sfd[2];
20static struct epoll_event e;
21
22static void run(void)
23{
24	TEST(do_epoll_pwait(efd, &e, 1, -1, NULL));
25
26	if (TST_RET == 1) {
27		tst_res(TPASS, "do_epoll_pwait() succeeded");
28		return;
29	}
30	tst_res(TFAIL, "do_epoll_pwait() returned %li, expected 1", TST_RET);
31}
32
33static void setup(void)
34{
35	epoll_pwait_init();
36
37	SAFE_SOCKETPAIR(AF_UNIX, SOCK_STREAM, 0, sfd);
38
39	efd = epoll_create(1);
40	if (efd == -1)
41		tst_brk(TBROK | TERRNO, "epoll_create()");
42
43	e.events = EPOLLIN;
44	if (epoll_ctl(efd, EPOLL_CTL_ADD, sfd[0], &e))
45		tst_brk(TBROK | TERRNO, "epoll_ctl(..., EPOLL_CTL_ADD, ...)");
46	SAFE_WRITE(SAFE_WRITE_ALL, sfd[1], "w", 1);
47}
48
49static void cleanup(void)
50{
51	if (efd > 0)
52		SAFE_CLOSE(efd);
53
54	if (sfd[0] > 0)
55		SAFE_CLOSE(sfd[0]);
56
57	if (sfd[1] > 0)
58		SAFE_CLOSE(sfd[1]);
59}
60
61static struct tst_test test = {
62	.test_all = run,
63	.setup = setup,
64	.cleanup = cleanup,
65	.test_variants = TEST_VARIANTS,
66};
67