| /**************************************************************************** |
| * libs/libc/time/lib_settimeofday.c |
| * |
| * Licensed to the Apache Software Foundation (ASF) under one or more |
| * contributor license agreements. See the NOTICE file distributed with |
| * this work for additional information regarding copyright ownership. The |
| * ASF licenses this file to you 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. |
| * |
| ****************************************************************************/ |
| |
| /**************************************************************************** |
| * Included Files |
| ****************************************************************************/ |
| |
| #include <nuttx/config.h> |
| |
| #include <sys/time.h> |
| #include <errno.h> |
| |
| #include <nuttx/clock.h> |
| |
| /**************************************************************************** |
| * Public Functions |
| ****************************************************************************/ |
| |
| /**************************************************************************** |
| * Name: settimeofday |
| * |
| * Description: |
| * Set the current time |
| * |
| * Conforming to SVr4, 4.3BSD. POSIX.1-2001 describes gettimeofday() but |
| * not settimeofday(). |
| * |
| * NuttX implements settimeofday() as a thin layer around clock_settime(); |
| * |
| * Input Parameters: |
| * tv - The net to time to be set |
| * tz - Ignored |
| * |
| * Returned Value: |
| * Zero (OK) on success; -1 is returned on failure with the errno variable |
| * set appropriately. |
| * |
| ****************************************************************************/ |
| |
| int settimeofday(FAR const struct timeval *tv, FAR const struct timezone *tz) |
| { |
| struct timespec ts; |
| |
| UNUSED(tz); |
| |
| #ifdef CONFIG_DEBUG_FEATURES |
| if (!tv || tv->tv_usec >= USEC_PER_SEC) |
| { |
| set_errno(EINVAL); |
| return ERROR; |
| } |
| #endif |
| |
| /* Convert the timeval to a timespec */ |
| |
| ts.tv_sec = tv->tv_sec; |
| ts.tv_nsec = tv->tv_usec * NSEC_PER_USEC; |
| |
| /* Let clock_settime do the work */ |
| |
| return clock_settime(CLOCK_REALTIME, &ts); |
| } |