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#ifndef CYGONCE_LIBC_STDIO_IO_INL
#define CYGONCE_LIBC_STDIO_IO_INL
//========================================================================
//
// io.inl
//
// Internal C library stdio io interface inlines
//
//========================================================================
//####ECOSGPLCOPYRIGHTBEGIN####
// -------------------------------------------
// This file is part of eCos, the Embedded Configurable Operating System.
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Red Hat, Inc.
//
// eCos is free software; you can redistribute it and/or modify it under
// the terms of the GNU General Public License as published by the Free
// Software Foundation; either version 2 or (at your option) any later version.
//
// eCos is distributed in the hope that it will be useful, but WITHOUT ANY
// WARRANTY; without even the implied warranty of MERCHANTABILITY or
// FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
// for more details.
//
// You should have received a copy of the GNU General Public License along
// with eCos; if not, write to the Free Software Foundation, Inc.,
// 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
//
// As a special exception, if other files instantiate templates or use macros
// or inline functions from this file, or you compile this file and link it
// with other works to produce a work based on this file, this file does not
// by itself cause the resulting work to be covered by the GNU General Public
// License. However the source code for this file must still be made available
// in accordance with section (3) of the GNU General Public License.
//
// This exception does not invalidate any other reasons why a work based on
// this file might be covered by the GNU General Public License.
//
// Alternative licenses for eCos may be arranged by contacting Red Hat, Inc.
// at http://sources.redhat.com/ecos/ecos-license/
// -------------------------------------------
//####ECOSGPLCOPYRIGHTEND####
//========================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s): nickg
// Contributors:
// Date: 2000-06-30
// Purpose:
// Description:
// Usage: #include <cyg/libc/stdio/io.hxx>
//
//####DESCRIPTIONEND####
//
//========================================================================
// CONFIGURATION
#include <pkgconf/libc_stdio.h> // Configuration header
//========================================================================
// INCLUDES
#include <cyg/libc/stdio/io.hxx>
//========================================================================
// FileIO versions of IO functions
#ifdef CYGPKG_LIBC_STDIO_FILEIO
inline Cyg_ErrNo cyg_stdio_open( const char *filename,
const Cyg_StdioStream::OpenMode rw,
const cyg_bool binary,
const cyg_bool append,
cyg_stdio_handle_t *dev)
{
mode_t mode = 0;
int fd;
switch( rw )
{
case Cyg_StdioStream::CYG_STREAM_WRITE:
mode = O_WRONLY|O_CREAT|O_TRUNC;
break;
case Cyg_StdioStream::CYG_STREAM_READ:
mode = O_RDONLY;
break;
case Cyg_StdioStream::CYG_STREAM_READWRITE:
mode = O_RDWR;
break;
}
if( append )
{
mode |= O_APPEND;
mode &= ~O_TRUNC;
}
fd = open( filename, mode );
if( fd < 0 )
return errno;
*dev = fd;
return ENOERR;
}
inline Cyg_ErrNo cyg_stdio_close( cyg_stdio_handle_t dev )
{
if( close( dev ) != ENOERR )
return errno;
return ENOERR;
}
inline Cyg_ErrNo cyg_stdio_read( cyg_stdio_handle_t dev,
void *buffer, cyg_uint32 *len )
{
if( dev != CYG_STDIO_HANDLE_NULL )
{
ssize_t done = read( dev, buffer, *len );
if( done < 0 )
{
*len = 0;
return errno;
}
*len = done;
}
// If the device is NULL, just return EOF indication
else *len = 0;
return ENOERR;
}
inline Cyg_ErrNo cyg_stdio_write( cyg_stdio_handle_t dev,
const void *buffer, cyg_uint32 *len )
{
if( dev != CYG_STDIO_HANDLE_NULL )
{
ssize_t done = write( dev, buffer, *len );
if( done < 0 )
{
*len = 0;
return errno;
}
*len = done;
}
// if the device is NULL, just absorb all writes.
return ENOERR;
}
inline Cyg_ErrNo cyg_stdio_lseek( cyg_stdio_handle_t dev,
off_t *pos, int whence )
{
off_t newpos = lseek( dev, *pos, whence );
if( newpos < 0 )
return errno;
*pos = newpos;
return ENOERR;
}
inline Cyg_ErrNo cyg_stdio_flush( cyg_stdio_handle_t dev )
{
int err = fsync( dev );
if( err < 0 )
return errno;
return ENOERR;
}
inline cyg_bool cyg_stdio_interactive( cyg_stdio_handle_t dev )
{
struct stat buf;
int err;
err = fstat( dev, &buf );
// If we get an error, assume interactive.
if( err < 0 )
return true;
if( S_ISCHR(buf.st_mode) )
return true;
return false;
}
#endif // CYGPKG_LIBC_STDIO_FILEIO
//========================================================================
// Direct IO versions of IO functions
#ifndef CYGPKG_LIBC_STDIO_FILEIO
inline Cyg_ErrNo cyg_stdio_open( const char *filename,
const Cyg_StdioStream::OpenMode rw,
const cyg_bool binary,
const cyg_bool append,
cyg_stdio_handle_t *dev)
{
return cyg_io_lookup( filename, dev );
}
inline Cyg_ErrNo cyg_stdio_close( cyg_stdio_handle_t dev )
{
// Devices do not get closed
return ENOERR;
}
inline Cyg_ErrNo cyg_stdio_read( cyg_stdio_handle_t dev,
void *buffer, cyg_uint32 *len )
{
return cyg_io_read( dev, buffer, len );
}
inline Cyg_ErrNo cyg_stdio_write( cyg_stdio_handle_t dev,
const void *buffer, cyg_uint32 *len )
{
return cyg_io_write( dev, buffer, len );
}
inline cyg_uint32 cyg_stdio_lseek( cyg_stdio_handle_t dev,
cyg_uint32 *pos, int whence )
{
// No seeking in raw devices, just return fake success
return ENOERR;
}
inline Cyg_ErrNo cyg_stdio_flush( cyg_stdio_handle_t dev )
{
return cyg_io_get_config(dev,
CYG_IO_GET_CONFIG_SERIAL_OUTPUT_DRAIN,
NULL, NULL);
}
inline cyg_bool cyg_stdio_interactive( cyg_stdio_handle_t dev )
{
return true;
}
#endif // !CYGPKG_LIBC_STDIO_FILEIO
//========================================================================
#endif // CYGONCE_LIBC_STDIO_IO_INL multiple inclusion protection
// EOF io.inl
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