87 lines
2.1 KiB
C
87 lines
2.1 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/*
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* Copyright (c) 2016 Fujitsu Ltd.
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* Author: Guangwen Feng <fenggw-fnst@cn.fujitsu.com>
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* Copyright (c) 2021 Xie Ziyao <xieziyao@huawei.com>
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*/
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/*\
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* [Description]
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*
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* Basic test for epoll_wait:
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*
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* - epoll_wait fails with EBADF if epfd is not a valid file descriptor.
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* - epoll_wait fails with EINVAL if epfd is not an epoll file descriptor.
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* - epoll_wait fails with EINVAL if maxevents is less than zero.
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* - epoll_wait fails with EINVAL if maxevents is equal to zero.
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* - epoll_wait fails with EFAULT if the memory area pointed to by events is
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* not accessible with write permissions.
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*/
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#include <sys/mman.h>
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#include <sys/epoll.h>
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#include "tst_test.h"
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static struct epoll_event epevs[1] = {
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{.events = EPOLLOUT}
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};
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static struct epoll_event *ev_rdonly, *ev_rdwr = epevs;
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static int fds[2], epfd, inv_epfd, bad_epfd = -1;
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static struct test_case_t {
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int *epfd;
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struct epoll_event **ev;
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int maxevents;
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int exp_errno;
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const char *desc;
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} tc[] = {
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{&bad_epfd, &ev_rdwr, 1, EBADF, "epfd is not a valid fd"},
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{&inv_epfd, &ev_rdwr, 1, EINVAL, "epfd is not an epoll fd"},
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{&epfd, &ev_rdwr, -1, EINVAL, "maxevents is less than zero"},
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{&epfd, &ev_rdwr, 0, EINVAL, "maxevents is equal to zero"},
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{&epfd, &ev_rdonly, 1, EFAULT, "events has no write permissions"}
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};
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static void setup(void)
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{
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ev_rdonly = SAFE_MMAP(NULL, getpagesize(), PROT_READ,
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MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
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SAFE_PIPE(fds);
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epfd = epoll_create(1);
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if (epfd == -1)
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tst_brk(TBROK | TERRNO, "epoll_create()");
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epevs[0].data.fd = fds[1];
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if (epoll_ctl(epfd, EPOLL_CTL_ADD, fds[1], &epevs[0]))
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tst_brk(TBROK | TERRNO, "epoll_clt(..., EPOLL_CTL_ADD, ...)");
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}
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static void verify_epoll_wait(unsigned int n)
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{
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TST_EXP_FAIL(epoll_wait(*tc[n].epfd, *tc[n].ev, tc[n].maxevents, -1),
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tc[n].exp_errno, "epoll_wait() %s", tc[n].desc);
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}
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static void cleanup(void)
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{
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if (epfd > 0)
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SAFE_CLOSE(epfd);
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if (fds[0] > 0)
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SAFE_CLOSE(fds[0]);
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if (fds[1] > 0)
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SAFE_CLOSE(fds[1]);
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}
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static struct tst_test test = {
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.setup = setup,
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.cleanup = cleanup,
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.test = verify_epoll_wait,
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.tcnt = ARRAY_SIZE(tc),
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};
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