/*
 * Copyright (C) 2018 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include <time.h>

#include <errno.h>
#include <trusty_syscalls.h>

int trusty_nanosleep(clockid_t clock_id, uint32_t flags, uint64_t sleep_time) {
    return _trusty_nanosleep(clock_id, flags, sleep_time);
}

int trusty_gettime(clockid_t clock_id, int64_t* time) {
    return _trusty_gettime(clock_id, 0, time);
}

#define NS_PER_SEC 1000000000

int clock_gettime(clockid_t clock_id, struct timespec* ts) {
    if (ts == NULL) {
        errno = EFAULT;
        return -1;
    }
    int64_t time;
    int rc = trusty_gettime(clock_id, &time);
    if (rc) {
        /* &time is valid, so clock_id must have been invalid. */
        errno = EINVAL;
        return -1;
    }
    ts->tv_sec = (time_t)(time / NS_PER_SEC);
    ts->tv_nsec = (long)(time % NS_PER_SEC);
    return 0;
}