blob: 04c269664b685f282f758da7c530074e3588a4be (
plain) (
tree)
|
|
/*
* close() - POSIX 1003.1b 6.3.1 - Close a File
*
* COPYRIGHT (c) 1989-1998.
* On-Line Applications Research Corporation (OAR).
* Copyright assigned to U.S. Government, 1994.
*
* The license and distribution terms for this file may be
* found in the file LICENSE in this distribution or at
* http://www.OARcorp.com/rtems/license.html.
*
* $Id$
*/
#include "libio_.h"
int close(
int fd
)
{
rtems_libio_t *iop;
rtems_status_code rc;
int status;
rtems_libio_check_fd(fd);
iop = rtems_libio_iop(fd);
rtems_libio_check_is_open(iop);
if ( iop->flags & LIBIO_FLAGS_HANDLER_MASK ) {
int (*fp)(int fd);
fp = rtems_libio_handlers[
(iop->flags >> LIBIO_FLAGS_HANDLER_SHIFT) - 1].close;
if ( fp == NULL )
set_errno_and_return_minus_one( EBADF );
status = (*fp)( fd );
return status;
}
if ( !iop->handlers )
set_errno_and_return_minus_one( EBADF );
if ( !iop->handlers->close )
set_errno_and_return_minus_one( ENOTSUP );
rc = (*iop->handlers->close)( iop );
rtems_libio_free( iop );
if (rc != RTEMS_SUCCESSFUL)
set_errno_and_return_minus_one( rc );
return rc;
}
/*
* _close_r
*
* This is the Newlib dependent reentrant version of close().
*/
#if defined(RTEMS_NEWLIB)
#include <reent.h>
int _close_r(
struct _reent *ptr,
int fd
)
{
return close( fd );
}
#endif
|