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// SPDX-License-Identifier: GPL-2.0-or-later
/*
* Copyright (c) Linux Test Project, 2021
* Author: Xie Ziyao <ziyaoxie@outlook.com>
*/
/*\
* [Description]
*
* Check that epoll_ctl returns zero with different combinations of events on
* success.
*/
#include <poll.h>
#include <sys/epoll.h>
#include "tst_test.h"
#include "tst_bitmap.h"
#define NUM_EPOLL_EVENTS 8
#define WIDTH_EPOLL_EVENTS 256
static int epfd, fds[2];
static struct epoll_event events = {.events = EPOLLIN};
static unsigned int events_type[NUM_EPOLL_EVENTS] = {
EPOLLIN, EPOLLOUT, EPOLLPRI, EPOLLERR,
EPOLLHUP, EPOLLET, EPOLLONESHOT, EPOLLRDHUP
};
static void run_all(void)
{
unsigned int i, j, events_bitmap;
for (i = 0; i < WIDTH_EPOLL_EVENTS; i++) {
events_bitmap = 0;
for (j = 0; j < NUM_EPOLL_EVENTS; j++)
events_bitmap |= (events_type[j] * TST_IS_BIT_SET(i, j));
events.events = events_bitmap;
TST_EXP_PASS(epoll_ctl(epfd, EPOLL_CTL_MOD, fds[0], &events),
"epoll_ctl(..., EPOLL_CTL_MOD, ...) with events.events=%08x",
events.events);
}
}
static void setup(void)
{
epfd = epoll_create(1);
if (epfd == -1)
tst_brk(TBROK | TERRNO, "fail to create epoll instance");
SAFE_PIPE(fds);
events.data.fd = fds[0];
if (epoll_ctl(epfd, EPOLL_CTL_ADD, fds[0], &events))
tst_brk(TBROK | TERRNO, "epoll_ctl(..., EPOLL_CTL_ADD, ...)");
}
static void cleanup(void)
{
if (epfd)
SAFE_CLOSE(epfd);
if (fds[0])
SAFE_CLOSE(fds[0]);
if (fds[1])
SAFE_CLOSE(fds[1]);
}
static struct tst_test test = {
.setup = setup,
.cleanup = cleanup,
.test_all = run_all,
};
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