/*
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* Copyright (C) 2013 Gilles Chanteperdrix <gch@xenomai.org>
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*
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* Permission is hereby granted, free of charge, to any person obtaining
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* a copy of this software and associated documentation files (the
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* "Software"), to deal in the Software without restriction, including
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* without limitation the rights to use, copy, modify, merge, publish,
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* distribute, sublicense, and/or sell copies of the Software, and to
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* permit persons to whom the Software is furnished to do so, subject to
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* the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
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* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
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* IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
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* CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
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* TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
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* SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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*/
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#include <stdio.h>
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#include <unistd.h>
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#include <errno.h>
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#include <assert.h>
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#include <fcntl.h>
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#include <sys/timerfd.h>
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#include <smokey/smokey.h>
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smokey_test_plugin(timerfd,
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SMOKEY_NOARGS,
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"Check timerfd support."
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);
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#ifndef TFD_NONBLOCK
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#define TFD_NONBLOCK O_NONBLOCK
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#endif
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static int timerfd_basic_check(void)
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{
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unsigned long long ticks;
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struct itimerspec its;
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int fd, i, ret;
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fd = smokey_check_errno(timerfd_create(CLOCK_MONOTONIC, 0));
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if (fd < 0)
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return fd;
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its.it_value.tv_sec = 0;
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its.it_value.tv_nsec = 100000000;
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its.it_interval.tv_sec = 0;
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its.it_interval.tv_nsec = 100000000;
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ret = smokey_check_errno(timerfd_settime(fd, 0, &its, NULL));
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if (ret)
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return ret;
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for (i = 0; i < 10; i++) {
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ret = smokey_check_errno(read(fd, &ticks, sizeof(ticks)));
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if (ret < 0)
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return ret;
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if (!smokey_assert(ret == 8))
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return -EINVAL;
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smokey_trace("%Ld direct read ticks", ticks);
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if (!smokey_assert(ticks >= 1))
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return -EINVAL;
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}
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return smokey_check_errno(close(fd));
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}
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static int timerfd_select_check(void)
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{
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unsigned long long ticks;
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fd_set tmp_inset, inset;
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struct itimerspec its;
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int fd, i, ret;
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fd = smokey_check_errno(timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK));
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if (fd < 0)
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return fd;
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FD_ZERO(&inset);
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FD_SET(fd, &inset);
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its.it_value.tv_sec = 0;
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its.it_value.tv_nsec = 100000000;
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its.it_interval.tv_sec = 0;
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its.it_interval.tv_nsec = 100000000;
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ret = smokey_check_errno(timerfd_settime(fd, 0, &its, NULL));
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if (ret)
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return ret;
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ret = read(fd, &ticks, sizeof(ticks));
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if (!smokey_assert(ret == -1 && errno == EAGAIN))
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return -EINVAL;
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for (i = 0; i < 10; i++) {
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tmp_inset = inset;
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ret = smokey_check_errno(select(fd + 1, &tmp_inset, NULL, NULL, NULL));
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if (ret < 0)
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return ret;
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ret = smokey_check_errno(read(fd, &ticks, sizeof(ticks)));
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if (ret < 0)
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return ret;
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smokey_assert(ret == 8);
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smokey_trace("%Ld select+read ticks", ticks);
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if (!smokey_assert(ticks >= 1))
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return -EINVAL;
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}
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return smokey_check_errno(close(fd));
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}
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static int timerfd_basic_overruns_check(void)
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{
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unsigned long long ticks;
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struct itimerspec its;
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int fd, ret, i;
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fd = smokey_check_errno(timerfd_create(CLOCK_MONOTONIC, 0));
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if (fd < 0)
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return fd;
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its.it_value.tv_sec = 0;
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its.it_value.tv_nsec = 100000000;
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its.it_interval.tv_sec = 0;
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its.it_interval.tv_nsec = 100000000;
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ret = smokey_check_errno(timerfd_settime(fd, 0, &its, NULL));
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if (ret)
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return ret;
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for (i = 0; i < 3; i++) {
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sleep(1);
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ret = smokey_check_errno(read(fd, &ticks, sizeof(ticks)));
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if (ret < 0)
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return ret;
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smokey_assert(ret == 8);
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smokey_trace("%Ld direct read ticks", ticks);
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if (!smokey_assert(ticks >= 10))
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return -EINVAL;
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}
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return smokey_check_errno(close(fd));
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}
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static int timerfd_select_overruns_check(void)
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{
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unsigned long long ticks;
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fd_set tmp_inset, inset;
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struct itimerspec its;
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int fd, ret, i;
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fd = smokey_check_errno(timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK));
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if (fd < 0)
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return fd;
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FD_ZERO(&inset);
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FD_SET(fd, &inset);
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its.it_value.tv_sec = 0;
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its.it_value.tv_nsec = 100000000;
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its.it_interval.tv_sec = 0;
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its.it_interval.tv_nsec = 100000000;
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ret = smokey_check_errno(timerfd_settime(fd, 0, &its, NULL));
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if (ret)
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return ret;
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ret = read(fd, &ticks, sizeof(ticks));
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if (!smokey_assert(ret == -1 && errno == EAGAIN))
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return -EINVAL;
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for (i = 0; i < 3; i++) {
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tmp_inset = inset;
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sleep(1);
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ret = smokey_check_errno(select(fd + 1, &tmp_inset, NULL, NULL, NULL));
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if (ret < 0)
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return ret;
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ret = smokey_check_errno(read(fd, &ticks, sizeof(ticks)));
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if (ret < 0)
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return ret;
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smokey_assert(ret == 8);
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smokey_trace("%Ld select+read ticks", ticks);
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if (!smokey_assert(ticks >= 10))
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return -EINVAL;
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}
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return smokey_check_errno(close(fd));
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}
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static int timerfd_select_overruns2_check(void)
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{
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unsigned long long ticks;
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fd_set tmp_inset, inset;
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struct itimerspec its;
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int fd, ret, i;
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fd = smokey_check_errno(timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK));
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if (fd < 0)
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return fd;
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FD_ZERO(&inset);
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FD_SET(fd, &inset);
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its.it_value.tv_sec = 0;
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its.it_value.tv_nsec = 100000000;
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its.it_interval.tv_sec = 0;
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its.it_interval.tv_nsec = 100000000;
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ret = smokey_check_errno(timerfd_settime(fd, 0, &its, NULL));
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if (ret)
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return ret;
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ret = read(fd, &ticks, sizeof(ticks));
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if (!smokey_assert(ret == -1 && errno == EAGAIN))
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return -EINVAL;
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for (i = 0; i < 3; i++) {
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tmp_inset = inset;
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ret = smokey_check_errno(select(fd + 1, &tmp_inset, NULL, NULL, NULL));
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if (ret < 0)
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return ret;
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sleep(1);
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ret = smokey_check_errno(read(fd, &ticks, sizeof(ticks)));
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if (ret < 0)
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return ret;
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smokey_assert(ret == 8);
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smokey_trace("%Ld select+read ticks", ticks);
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if (!smokey_assert(ticks >= 11))
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return -EINVAL;
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}
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return smokey_check_errno(close(fd));
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}
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static int timerfd_select_overruns_before_check(void)
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{
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unsigned long long ticks;
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fd_set tmp_inset, inset;
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struct itimerspec its;
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int fd, ret, i;
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fd = smokey_check_errno(timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK));
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if (fd < 0)
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return fd;
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FD_ZERO(&inset);
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FD_SET(fd, &inset);
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its.it_value.tv_sec = 0;
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its.it_value.tv_nsec = 100000000;
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its.it_interval.tv_sec = 0;
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its.it_interval.tv_nsec = 100000000;
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ret = smokey_check_errno(timerfd_settime(fd, 0, &its, NULL));
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if (ret)
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return ret;
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ret = read(fd, &ticks, sizeof(ticks));
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if (!smokey_assert(ret == -1 && errno == EAGAIN))
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return -EINVAL;
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sleep(1);
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for (i = 0; i < 3; i++) {
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tmp_inset = inset;
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ret = smokey_check_errno(select(fd + 1, &tmp_inset, NULL, NULL, NULL));
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if (ret < 0)
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return ret;
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ret = smokey_check_errno(read(fd, &ticks, sizeof(ticks)));
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if (ret < 0)
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return ret;
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smokey_assert(ret == 8);
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smokey_trace("%Ld select+read ticks", ticks);
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if (!smokey_assert(ticks >= 10))
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return -EINVAL;
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sleep(1);
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}
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return smokey_check_errno(close(fd));
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}
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static ssize_t
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timed_read(int fd, void *buf, size_t len, struct timespec *ts)
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{
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unsigned long long ticks;
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struct itimerspec its;
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int tfd, ret;
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ssize_t err;
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tfd = smokey_check_errno(timerfd_create(CLOCK_MONOTONIC, TFD_NONBLOCK));
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if (tfd < 0)
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return tfd;
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its.it_value = *ts;
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its.it_interval.tv_sec = 0;
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its.it_interval.tv_nsec = 0;
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ret = smokey_check_errno(timerfd_settime(tfd, TFD_WAKEUP, &its, NULL));
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if (ret)
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return ret;
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err = read(fd, buf, len);
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if (err < 0)
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err = -errno;
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if (err == -EINTR) {
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err = read(tfd, &ticks, sizeof(ticks));
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if (err > 0)
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err = -ETIMEDOUT;
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else
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err = -EINTR;
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}
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ret = smokey_check_errno(close(tfd));
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if (ret)
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return ret;
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if (err >= 0)
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return err;
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errno = -err;
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return -1;
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}
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static int timerfd_unblock_check(void)
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{
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unsigned long long ticks;
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struct itimerspec its;
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int fd, ret;
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fd = smokey_check_errno(timerfd_create(CLOCK_MONOTONIC, 0));
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if (fd < 0)
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return fd;
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its.it_value.tv_sec = 5;
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its.it_value.tv_nsec = 0;
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its.it_interval.tv_sec = 0;
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its.it_interval.tv_nsec = 0;
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ret = smokey_check_errno(timerfd_settime(fd, 0, &its, NULL));
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if (ret)
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return ret;
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its.it_value.tv_sec = 0;
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its.it_value.tv_nsec = 100000000;
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if (!smokey_assert(timed_read(fd, &ticks, sizeof(ticks), &its.it_value) < 0 &&
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errno == ETIMEDOUT))
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return -EINVAL;
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return smokey_check_errno(close(fd));
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}
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static int run_timerfd(struct smokey_test *t, int argc, char *const argv[])
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{
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int ret;
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ret = timerfd_basic_check();
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if (ret)
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return ret;
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timerfd_select_check();
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if (ret)
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return ret;
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timerfd_basic_overruns_check();
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if (ret)
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return ret;
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timerfd_select_overruns_check();
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if (ret)
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return ret;
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timerfd_select_overruns2_check();
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if (ret)
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return ret;
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timerfd_select_overruns_before_check();
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if (ret)
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return ret;
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return timerfd_unblock_check();
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}
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