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/*
* write() - POSIX 1003.1b 6.4.2 - Write to 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"
/*
* write
*
* This routine writes count bytes from from buffer pointed to by buffer
* to the file associated with the open file descriptor, fildes.
*/
ssize_t write(
int fd,
const void *buffer,
size_t count
)
{
rtems_status_code rc;
rtems_libio_t *iop;
rtems_libio_check_fd( fd );
iop = rtems_libio_iop( fd );
rtems_libio_check_is_open(iop);
rtems_libio_check_buffer( buffer );
rtems_libio_check_count( count );
rtems_libio_check_permissions( iop, LIBIO_FLAGS_WRITE );
/*
* Now process the write() request.
*/
if ( !iop->handlers->write )
set_errno_and_return_minus_one( ENOTSUP );
rc = (*iop->handlers->write)( iop, buffer, count );
if ( rc > 0 )
iop->offset += rc;
return rc;
}
/*
* _write_r
*
* This is the Newlib dependent reentrant version of write().
*/
#if defined(RTEMS_NEWLIB)
#include <reent.h>
long _write_r(
struct _reent *ptr,
int fd,
const void *buf,
size_t nbytes
)
{
return write( fd, buf, nbytes );
}
#endif
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