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tests: posix: eventfd: Add ioctl F_SETFL test

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Add a test to protect against future regressions in the ioctl F_SETFL
operation of eventfd. Flags are set and unset and validity of the file
descriptor is checked by reading and writing.

Signed-off-by: Celina Sophie Kalus <hello@celinakalus.de>
This commit is contained in:
Celina Sophie Kalus 2024-04-11 16:13:29 +02:00 committed by Chris Friedt
parent 5bd86eaddb
commit 325f22a16f
1 changed files with 90 additions and 0 deletions
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tests/posix/eventfd/src/ioctl.c Normal file
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/*
* Copyright (c) 2024 Celina Sophie Kalus
*
* SPDX-License-Identifier: Apache-2.0
*/
#include "_main.h"
#include <zephyr/posix/sys/ioctl.h>
#define EFD_IN_USE_INTERNAL 0x1
ZTEST_F(eventfd, test_set_flags)
{
eventfd_t val;
int ret;
int flags;
short event;
/* Get current flags; Expect blocking, non-semaphore. */
flags = ioctl(fixture->fd, F_GETFL, 0);
zassert_equal(flags, 0, "flags == %d", flags);
event = POLLIN;
ret = is_blocked(fixture->fd, &event);
zassert_equal(ret, 1, "eventfd read not blocked");
/* Try writing and reading. Should not fail. */
ret = eventfd_write(fixture->fd, 3);
zassert_ok(ret);
ret = eventfd_read(fixture->fd, &val);
zassert_ok(ret);
zassert_equal(val, 3, "val == %d", val);
/* Set nonblocking without reopening. */
ret = ioctl(fixture->fd, F_SETFL, O_NONBLOCK);
zassert_ok(ret);
flags = ioctl(fixture->fd, F_GETFL, 0);
zassert_equal(flags, O_NONBLOCK, "flags == %d", flags);
event = POLLOUT;
ret = is_blocked(fixture->fd, &event);
zassert_equal(ret, 0, "eventfd write blocked");
/* Try writing and reading again. */
ret = eventfd_write(fixture->fd, 19);
zassert_ok(ret);
ret = eventfd_read(fixture->fd, &val);
zassert_ok(ret);
zassert_equal(val, 19, "val == %d", val);
/* Set back to blocking. */
ret = ioctl(fixture->fd, F_SETFL, 0);
zassert_ok(ret);
flags = ioctl(fixture->fd, F_GETFL, 0);
zassert_equal(flags, 0, "flags == %d", flags);
event = POLLIN;
ret = is_blocked(fixture->fd, &event);
zassert_equal(ret, 1, "eventfd read not blocked");
/* Try writing and reading again. */
ret = eventfd_write(fixture->fd, 10);
zassert_ok(ret);
ret = eventfd_read(fixture->fd, &val);
zassert_ok(ret);
zassert_equal(val, 10, "val == %d", val);
/* Test setting internal in-use-flag. Should fail. */
ret = ioctl(fixture->fd, F_SETFL, EFD_IN_USE_INTERNAL);
zassert_not_ok(ret);
/* File descriptor should still be valid and working. */
ret = eventfd_write(fixture->fd, 97);
zassert_ok(ret);
ret = eventfd_read(fixture->fd, &val);
zassert_ok(ret);
zassert_equal(val, 97, "val == %d", val);
}