6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill/*
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill * This file and its contents are supplied under the terms of the
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill * Common Development and Distribution License ("CDDL"), version 1.0.
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill * You may only use this file in accordance with the terms of version
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill * 1.0 of the CDDL.
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill *
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill * A full copy of the text of the CDDL should have accompanied this
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill * source. A copy of the CDDL is also available via the Internet at
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill * http://www.illumos.org/license/CDDL.
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill */
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill/*
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill * Copyright (c) 2015, Joyent, Inc. All rights reserved.
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill */
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill#include <sys/timerfd.h>
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill#include <sys/stat.h>
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill#include <unistd.h>
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill#include <errno.h>
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill#include <fcntl.h>
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrillint
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrilltimerfd_create(int clockid, int flags)
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill{
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill int oflags = O_RDWR;
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill int fd;
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill if (flags & ~(TFD_NONBLOCK | TFD_CLOEXEC)) {
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill errno = EINVAL;
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill return (-1);
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill }
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill if (flags & TFD_NONBLOCK)
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill oflags |= O_NONBLOCK;
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill if (flags & TFD_CLOEXEC)
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill oflags |= O_CLOEXEC;
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill if ((fd = open("/dev/timerfd", oflags)) < 0)
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill return (-1);
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill if (ioctl(fd, TIMERFDIOC_CREATE, clockid) != 0) {
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill (void) close(fd);
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill return (-1);
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill }
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill return (fd);
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill}
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrillint
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrilltimerfd_settime(int fd, int flags, const struct itimerspec *new_value,
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill struct itimerspec *old_value)
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill{
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill timerfd_settime_t st;
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill int rval;
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill if (flags & ~(TFD_TIMER_ABSTIME | TFD_TIMER_CANCEL_ON_SET)) {
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill errno = EINVAL;
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill return (-1);
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill }
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill st.tfd_settime_flags = flags;
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill st.tfd_settime_value = (uint64_t)(uintptr_t)new_value;
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill st.tfd_settime_ovalue = (uint64_t)(uintptr_t)old_value;
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill rval = ioctl(fd, TIMERFDIOC_SETTIME, &st);
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill if (rval == -1 && errno == ENOTTY) {
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill /*
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill * Linux has us return EINVAL when the file descriptor is valid
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill * but is not a timerfd file descriptor -- and LTP explicitly
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill * checks this case.
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill */
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill errno = EINVAL;
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill }
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill return (rval);
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill}
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrillint
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrilltimerfd_gettime(int fd, struct itimerspec *curr_value)
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill{
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill int rval = ioctl(fd, TIMERFDIOC_GETTIME, curr_value);
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill if (rval == -1 && errno == ENOTTY) {
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill /*
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill * See comment in timerfd_settime(), above.
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill */
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill errno = EINVAL;
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill }
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill return (rval);
6a72db4a7fa12c3e0d1c1cf91a07390739fa0fbfBryan Cantrill}