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#include <sys/epoll.h>
#include <sys/mman.h>
#include <unistd.h>
#include <string.h>
#include <errno.h>
#include "tst_test.h"
static int page_size, fds[2], epfd, inv_epfd, bad_epfd = -1;
static struct epoll_event epevs[1] = {
{.events = EPOLLOUT}
};
static struct epoll_event *ev_rdwr = epevs;
static struct epoll_event *ev_rdonly;
static struct tcase {
int *epfd;
struct epoll_event **ev;
int maxevents;
int exp_errno;
} tcases[] = {
{&bad_epfd, &ev_rdwr, 1, EBADF},
{&inv_epfd, &ev_rdwr, 1, EINVAL},
{&epfd, &ev_rdwr, -1, EINVAL},
{&epfd, &ev_rdwr, 0, EINVAL},
{&epfd, &ev_rdonly, 1, EFAULT}
};
static void my_test(unsigned int n)
{
struct tcase *tc = &tcases[n];
TEST(epoll_wait(*(tc->epfd), *(tc->ev), tc->maxevents, -1));
if (TEST_RETURN != -1)
tst_res(TFAIL, "epoll_wait() succeed unexpectedly");
else
if (tc->exp_errno == TEST_ERRNO)
tst_res(TPASS | TTERRNO,
"epoll_wait() fails as expected");
else
tst_res(TFAIL | TTERRNO,
"epoll_wait() fails unexpectedly, expected %d: %s",
tc->exp_errno,
strerror(tc->exp_errno));
}
static void setup(void)
{
page_size = getpagesize();
ev_rdonly = SAFE_MMAP(NULL, page_size, PROT_READ,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
SAFE_PIPE(fds);
epfd = epoll_create(1);
if (epfd == -1)
tst_brk(TBROK | TERRNO, "failed to create epoll instance");
epevs[0].data.fd = fds[1];
if (epoll_ctl(epfd, EPOLL_CTL_ADD, fds[1], &epevs[0]))
tst_brk(TBROK | TERRNO, "failed to register epoll target");
}
static void cleanup(void)
{
if (epfd > 0 && close(epfd))
tst_res(TWARN | TERRNO, "failed to close epfd");
if (close(fds[0]))
tst_res(TWARN | TERRNO, "close(fds[0]) failed");
if (close(fds[1]))
tst_res(TWARN | TERRNO, "close(fds[1]) failed");
}
static struct tst_test test = {
.tcnt = ARRAY_SIZE(tcases),
.test = my_test,
.needs_checkpoints = 1,
.setup = setup,
.cleanup = cleanup
};
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