1f08c3bdfSopenharmony_ci// SPDX-License-Identifier: GPL-2.0-or-later 2f08c3bdfSopenharmony_ci/* 3f08c3bdfSopenharmony_ci * Copyright (c) International Business Machines Corp., 2001 4f08c3bdfSopenharmony_ci * Copyright (c) 2008 Vijay Kumar B. <vijaykumar@bravegnu.org> 5f08c3bdfSopenharmony_ci * Copyright (c) Linux Test Project, 2008-2022 6f08c3bdfSopenharmony_ci * Copyright (C) 2023 SUSE LLC Andrea Cervesato <andrea.cervesato@suse.com> 7f08c3bdfSopenharmony_ci */ 8f08c3bdfSopenharmony_ci 9f08c3bdfSopenharmony_ci/*\ 10f08c3bdfSopenharmony_ci * [Description] 11f08c3bdfSopenharmony_ci * 12f08c3bdfSopenharmony_ci * Verify write operation for eventfd fail with: 13f08c3bdfSopenharmony_ci * 14f08c3bdfSopenharmony_ci * - EAGAIN when counter is zero on non blocking fd 15f08c3bdfSopenharmony_ci * - EINVAL when buffer size is less than 8 bytes, or if an attempt is made to 16f08c3bdfSopenharmony_ci * write the value 0xffffffffffffffff 17f08c3bdfSopenharmony_ci */ 18f08c3bdfSopenharmony_ci 19f08c3bdfSopenharmony_ci#include <stdlib.h> 20f08c3bdfSopenharmony_ci#include <sys/eventfd.h> 21f08c3bdfSopenharmony_ci#include "tst_test.h" 22f08c3bdfSopenharmony_ci 23f08c3bdfSopenharmony_cistatic void run(void) 24f08c3bdfSopenharmony_ci{ 25f08c3bdfSopenharmony_ci int fd; 26f08c3bdfSopenharmony_ci uint64_t val = 12; 27f08c3bdfSopenharmony_ci uint64_t buf; 28f08c3bdfSopenharmony_ci uint32_t invalid; 29f08c3bdfSopenharmony_ci 30f08c3bdfSopenharmony_ci fd = TST_EXP_FD(eventfd(0, EFD_NONBLOCK)); 31f08c3bdfSopenharmony_ci 32f08c3bdfSopenharmony_ci SAFE_WRITE(0, fd, &val, sizeof(val)); 33f08c3bdfSopenharmony_ci SAFE_READ(0, fd, &buf, sizeof(buf)); 34f08c3bdfSopenharmony_ci TST_EXP_EQ_LI(buf, val); 35f08c3bdfSopenharmony_ci 36f08c3bdfSopenharmony_ci val = UINT64_MAX - 1; 37f08c3bdfSopenharmony_ci SAFE_WRITE(0, fd, &val, sizeof(val)); 38f08c3bdfSopenharmony_ci TST_EXP_FAIL(write(fd, &val, sizeof(val)), EAGAIN); 39f08c3bdfSopenharmony_ci TST_EXP_FAIL(write(fd, &invalid, sizeof(invalid)), EINVAL); 40f08c3bdfSopenharmony_ci 41f08c3bdfSopenharmony_ci val = 0xffffffffffffffffLL; 42f08c3bdfSopenharmony_ci TST_EXP_FAIL(write(fd, &val, sizeof(val)), EINVAL); 43f08c3bdfSopenharmony_ci 44f08c3bdfSopenharmony_ci SAFE_CLOSE(fd); 45f08c3bdfSopenharmony_ci} 46f08c3bdfSopenharmony_ci 47f08c3bdfSopenharmony_cistatic struct tst_test test = { 48f08c3bdfSopenharmony_ci .test_all = run, 49f08c3bdfSopenharmony_ci .needs_kconfigs = (const char *[]) { 50f08c3bdfSopenharmony_ci "CONFIG_EVENTFD", 51f08c3bdfSopenharmony_ci NULL 52f08c3bdfSopenharmony_ci }, 53f08c3bdfSopenharmony_ci}; 54