157 lines
4.3 KiB
C
157 lines
4.3 KiB
C
/****************************************************************************
|
|
* libs/libc/stdio/lib_fclose.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 <unistd.h>
|
|
#include <stdlib.h>
|
|
#include <fcntl.h>
|
|
#include <string.h>
|
|
#include <errno.h>
|
|
|
|
#ifdef CONFIG_FDSAN
|
|
# include <android/fdsan.h>
|
|
#endif
|
|
|
|
#include "libc.h"
|
|
|
|
/****************************************************************************
|
|
* Public Functions
|
|
****************************************************************************/
|
|
|
|
/****************************************************************************
|
|
* Name: fclose
|
|
*
|
|
* Description:
|
|
* The fclose() function will flush the stream pointed to by stream
|
|
* (writing any buffered output data using lib_fflush()) and close the
|
|
* underlying file descriptor.
|
|
*
|
|
* Returned Value:
|
|
* Upon successful completion 0 is returned. Otherwise, EOF is returned
|
|
* and the global variable errno is set to indicate the error. In either
|
|
* case any further access (including another call to fclose()) to the
|
|
* stream results in undefined behaviour.
|
|
*
|
|
****************************************************************************/
|
|
|
|
int fclose(FAR FILE *stream)
|
|
{
|
|
FAR struct streamlist *slist;
|
|
int errcode = EINVAL;
|
|
int ret = ERROR;
|
|
int status;
|
|
|
|
/* Verify that a stream was provided. */
|
|
|
|
if (stream)
|
|
{
|
|
ret = OK;
|
|
|
|
/* If the stream was opened for writing, then flush the stream */
|
|
|
|
if ((stream->fs_oflags & O_WROK) != 0)
|
|
{
|
|
ret = lib_fflush(stream);
|
|
errcode = get_errno();
|
|
}
|
|
|
|
/* Skip close the builtin streams(stdin, stdout and stderr) */
|
|
|
|
if (stream == stdin || stream == stdout || stream == stderr)
|
|
{
|
|
goto done;
|
|
}
|
|
|
|
/* Remove FILE structure from the stream list */
|
|
|
|
slist = lib_get_streams();
|
|
nxmutex_lock(&slist->sl_lock);
|
|
|
|
sq_rem(&stream->fs_entry, &slist->sl_queue);
|
|
|
|
nxmutex_unlock(&slist->sl_lock);
|
|
|
|
/* Call user custom callback if it is not NULL. */
|
|
|
|
if (stream->fs_iofunc.close != NULL)
|
|
{
|
|
status = stream->fs_iofunc.close(stream->fs_cookie);
|
|
}
|
|
else
|
|
{
|
|
int fd = (int)(intptr_t)stream->fs_cookie;
|
|
#ifdef CONFIG_FDSAN
|
|
uint64_t tag;
|
|
tag = android_fdsan_create_owner_tag(ANDROID_FDSAN_OWNER_TYPE_FILE,
|
|
(uintptr_t)stream);
|
|
status = android_fdsan_close_with_tag(fd, tag);
|
|
#else
|
|
status = close(fd);
|
|
#endif
|
|
}
|
|
|
|
/* If close() returns an error but flush() did not then make sure
|
|
* that we return the close() error condition.
|
|
*/
|
|
|
|
if (ret == OK)
|
|
{
|
|
ret = status;
|
|
errcode = get_errno();
|
|
}
|
|
|
|
#ifndef CONFIG_STDIO_DISABLE_BUFFERING
|
|
/* Destroy the mutex */
|
|
|
|
nxrmutex_destroy(&stream->fs_lock);
|
|
|
|
/* Release the buffer */
|
|
|
|
if (stream->fs_bufstart != NULL &&
|
|
(stream->fs_flags & __FS_FLAG_UBF) == 0)
|
|
{
|
|
lib_free(stream->fs_bufstart);
|
|
}
|
|
#endif
|
|
|
|
lib_free(stream);
|
|
}
|
|
|
|
done:
|
|
/* On an error, reset the errno to the first error encountered and return
|
|
* EOF.
|
|
*/
|
|
|
|
if (ret != OK)
|
|
{
|
|
set_errno(errcode);
|
|
return EOF;
|
|
}
|
|
|
|
/* Return success */
|
|
|
|
return OK;
|
|
}
|