incubator-nuttx/libs/libc/stdio/lib_fwrite.c

59 lines
2.0 KiB
C

/****************************************************************************
* libs/libc/stdio/lib_fwrite.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/types.h>
#include <stdio.h>
#include "libc.h"
/****************************************************************************
* Public Functions
****************************************************************************/
/****************************************************************************
* Name: fwrite
****************************************************************************/
size_t fwrite(FAR const void *ptr, size_t size, size_t n_items,
FAR FILE *stream)
{
size_t full_size = n_items * (size_t)size;
ssize_t bytes_written;
size_t items_written = 0;
/* Write the data into the stream buffer */
bytes_written = lib_fwrite(ptr, full_size, stream);
if (bytes_written > 0)
{
/* Return the number of full items written */
items_written = bytes_written / size;
}
return items_written;
}