72 lines
2.3 KiB
C
72 lines
2.3 KiB
C
/****************************************************************************
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* libs/libc/stdio/lib_fwrite.c
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*
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* Licensed to the Apache Software Foundation (ASF) under one or more
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* contributor license agreements. See the NOTICE file distributed with
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* this work for additional information regarding copyright ownership. The
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* ASF licenses this file to you under the Apache License, Version 2.0 (the
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* "License"); you may not use this file except in compliance with the
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* License. You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
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* WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
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* License for the specific language governing permissions and limitations
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* under the License.
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*
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****************************************************************************/
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/****************************************************************************
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* Included Files
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****************************************************************************/
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#include <nuttx/config.h>
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#include <sys/types.h>
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#include <stdio.h>
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#include "libc.h"
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/****************************************************************************
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* Public Functions
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****************************************************************************/
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/****************************************************************************
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* Name: fwrite
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****************************************************************************/
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size_t fwrite_unlocked(FAR const void *ptr, size_t size, size_t n_items,
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FAR FILE *stream)
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{
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size_t full_size = n_items * (size_t)size;
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ssize_t bytes_written;
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size_t items_written = 0;
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/* Write the data into the stream buffer */
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bytes_written = lib_fwrite_unlocked(ptr, full_size, stream);
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if (bytes_written > 0)
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{
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/* Return the number of full items written */
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items_written = bytes_written / size;
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}
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return items_written;
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}
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size_t fwrite(FAR const void *ptr, size_t size, size_t n_items,
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FAR FILE *stream)
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{
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size_t ret;
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flockfile(stream);
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ret = fwrite_unlocked(ptr, size, n_items, stream);
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funlockfile(stream);
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return ret;
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}
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