154 lines
3.7 KiB
C
154 lines
3.7 KiB
C
/*
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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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*
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* This program is free software; you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See
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* the GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program.
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*/
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/*
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* Description:
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* 1) epoll_wait(2) fails if epfd is not a valid file descriptor
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* 2) epoll_wait(2) fails if epfd is not an epoll file descriptor
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* 3) epoll_wait(2) fails if maxevents is less than zero
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* 4) epoll_wait(2) fails if maxevents is equal to zero
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* 5) epoll_wait(2) fails if the memory area pointed to by events
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* is not accessible with write permissions.
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*
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* Expected Result:
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* 1) epoll_wait(2) should return -1 and set errno to EBADF
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* 2) epoll_wait(2) should return -1 and set errno to EINVAL
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* 3) epoll_wait(2) should return -1 and set errno to EINVAL
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* 4) epoll_wait(2) should return -1 and set errno to EINVAL
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* 5) epoll_wait(2) should return -1 and set errno to EFAULT
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*/
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#include <sys/epoll.h>
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#include <sys/mman.h>
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#include <unistd.h>
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#include <string.h>
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#include <errno.h>
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#include "test.h"
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#include "safe_macros.h"
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static int page_size, fds[2], epfd, inv_epfd, bad_epfd = -1;
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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_rdwr = epevs;
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static struct epoll_event *ev_rdonly;
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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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} tc[] = {
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/* test1 */
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{&bad_epfd, &ev_rdwr, 1, EBADF},
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/* test2 */
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{&inv_epfd, &ev_rdwr, 1, EINVAL},
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/* test3 */
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{&epfd, &ev_rdwr, -1, EINVAL},
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/* test4 */
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{&epfd, &ev_rdwr, 0, EINVAL},
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/* test5 */
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{&epfd, &ev_rdonly, 1, EFAULT}
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};
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char *TCID = "epoll_wait03";
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int TST_TOTAL = ARRAY_SIZE(tc);
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static void setup(void);
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static void verify_epoll_wait(struct test_case_t *tc);
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static void cleanup(void);
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int main(int ac, char **av)
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{
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int lc, i;
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tst_parse_opts(ac, av, NULL, NULL);
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setup();
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for (lc = 0; TEST_LOOPING(lc); lc++) {
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tst_count = 0;
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for (i = 0; i < TST_TOTAL; i++)
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verify_epoll_wait(&tc[i]);
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}
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cleanup();
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tst_exit();
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}
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static void setup(void)
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{
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tst_sig(NOFORK, DEF_HANDLER, cleanup);
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TEST_PAUSE;
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page_size = getpagesize();
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ev_rdonly = SAFE_MMAP(NULL, NULL, page_size, PROT_READ,
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MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
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SAFE_PIPE(NULL, fds);
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epfd = epoll_create(1);
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if (epfd == -1) {
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tst_brkm(TBROK | TERRNO, cleanup,
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"failed to create epoll instance");
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}
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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_brkm(TBROK | TERRNO, cleanup,
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"failed to register epoll target");
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}
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}
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static void verify_epoll_wait(struct test_case_t *tc)
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{
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TEST(epoll_wait(*(tc->epfd), *(tc->ev), tc->maxevents, -1));
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if (TEST_RETURN != -1) {
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tst_resm(TFAIL, "epoll_wait() succeed unexpectedly");
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} else {
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if (tc->exp_errno == TEST_ERRNO) {
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tst_resm(TPASS | TTERRNO,
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"epoll_wait() fails as expected");
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} else {
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tst_resm(TFAIL | TTERRNO,
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"epoll_wait() fails unexpectedly, "
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"expected %d: %s", tc->exp_errno,
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tst_strerrno(tc->exp_errno));
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}
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}
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}
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static void cleanup(void)
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{
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if (epfd > 0 && close(epfd))
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tst_resm(TWARN | TERRNO, "failed to close epfd");
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if (close(fds[0]))
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tst_resm(TWARN | TERRNO, "close(fds[0]) failed");
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if (close(fds[1]))
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tst_resm(TWARN | TERRNO, "close(fds[1]) failed");
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}
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