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#ifndef CYGONCE_FIO_H
#define CYGONCE_FIO_H
//=============================================================================
//
//      fio.h
//
//      Fileio private header
//
//=============================================================================
// ####ECOSGPLCOPYRIGHTBEGIN####                                            
// -------------------------------------------                              
// This file is part of eCos, the Embedded Configurable Operating System.   
// Copyright (C) 1998, 1999, 2000, 2001, 2002 Free Software Foundation, 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.,    
// 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, 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 v2.                                               
//
// This exception does not invalidate any other reasons why a work based    
// on this file might be covered by the GNU General Public License.         
// -------------------------------------------                              
// ####ECOSGPLCOPYRIGHTEND####                                              
//=============================================================================
//#####DESCRIPTIONBEGIN####
//
// Author(s):     nickg
// Contributors:  nickg
// Date:          2000-05-25
// Purpose:       Fileio private header
// Description:   This file contains private definitions for communication
//                between the parts of the fileio package.
//              
// Usage:
//              #include "fio.h"
//              ...
//              
//
//####DESCRIPTIONEND####
//
//=============================================================================
 
#include <pkgconf/hal.h>
#include <pkgconf/io_fileio.h>
#include <pkgconf/isoinfra.h>
 
#include <cyg/infra/cyg_type.h>
 
#include <stddef.h>             // NULL, size_t
#include <unistd.h>
#include <limits.h>
#include <sys/types.h>
 
#include <cyg/fileio/fileio.h>
#include <cyg/fileio/sockio.h>
 
#include <errno.h>
 
#ifdef CYGPKG_KERNEL
#include <pkgconf/kernel.h>
#include <cyg/kernel/mutex.hxx>        // mutex definitions
 
#define FILEIO_MUTEX_LOCK(_m_)   ((_m_).lock())
#define FILEIO_MUTEX_UNLOCK(_m_) ((_m_).unlock())
 
#else
#define FILEIO_MUTEX_LOCK(_m_) 
#define FILEIO_MUTEX_UNLOCK(_m_)
#endif
 
 
//=============================================================================
// POSIX API support
 
#ifdef CYGPKG_POSIX
#include <pkgconf/posix.h>
#include <cyg/posix/export.h>
 
#define CYG_FILEIO_FUNCTION_START() CYG_POSIX_FUNCTION_START()
 
#define CYG_FILEIO_FUNCTION_FINISH() CYG_POSIX_FUNCTION_FINISH()
 
#else
 
#define CYG_FILEIO_FUNCTION_START() CYG_EMPTY_STATEMENT
 
#define CYG_FILEIO_FUNCTION_FINISH() CYG_EMPTY_STATEMENT
 
#endif
 
#ifdef CYGPKG_POSIX_SIGNALS
 
#define CYG_FILEIO_SIGMASK_SET( __set, __oset ) \
        CYG_PTHREAD_SIGMASK_SET( __set, __oset )
 
#define CYG_FILEIO_SIGPENDING() CYG_POSIX_SIGPENDING()
 
#define CYG_FILEIO_DELIVER_SIGNALS( __mask ) \
        CYG_POSIX_DELIVER_SIGNALS( __mask )
 
#else
 
#define CYG_FILEIO_SIGMASK_SET( __set, __oset ) \
CYG_MACRO_START \
CYG_UNUSED_PARAM( const sigset_t*, __set ); \
CYG_UNUSED_PARAM( const sigset_t*, __oset ); \
CYG_MACRO_END
 
#define CYG_FILEIO_SIGPENDING() (0)
 
#define CYG_FILEIO_DELIVER_SIGNALS( __mask ) CYG_UNUSED_PARAM( const sigset_t*, __mask )
 
typedef int sigset_t;
 
#endif
 
//=============================================================================
// Fileio function entry and return macros.
 
// Handle entry to a fileio package function. 
#define FILEIO_ENTRY()                          \
    CYG_REPORT_FUNCTYPE( "returning %d" );      \
    CYG_FILEIO_FUNCTION_START();                \
 
#define FILEIO_ENTRY_VOID()                     \
    CYG_REPORT_FUNCTION();                      \
    CYG_FILEIO_FUNCTION_START();                \
 
 
// Do a fileio package defined return. This requires the error code
// to be placed in errno, and if it is non-zero, -1 returned as the
// result of the function. This also gives us a place to put any
// generic tidyup handling needed for things like signal delivery and
// cancellation.
#define FILEIO_RETURN(err)                      \
CYG_MACRO_START                                 \
    int __retval = 0;                           \
    CYG_FILEIO_FUNCTION_FINISH();               \
    if( err != 0 ) __retval = -1, errno = err;  \
    CYG_REPORT_RETVAL( __retval );              \
    return __retval;                            \
CYG_MACRO_END
 
#define FILEIO_RETURN_VALUE(val)                \
CYG_MACRO_START                                 \
    CYG_FILEIO_FUNCTION_FINISH();               \
    CYG_REPORT_RETVAL( val );                   \
    return val;                                 \
CYG_MACRO_END
 
#define FILEIO_RETURN_VOID()                    \
CYG_MACRO_START                                 \
    CYG_FILEIO_FUNCTION_FINISH();               \
    CYG_REPORT_RETURN();                        \
    return;                                     \
CYG_MACRO_END
 
//=============================================================================
// Cancellation support
// If the POSIX package is present we want to include cancellation points
// in the routines that are defined to contain them.
// The macro CYG_CANCELLATION_POINT does this.
 
#ifdef CYGINT_ISO_PTHREAD_IMPL
 
# include <pthread.h>
 
# define CYG_CANCELLATION_POINT pthread_testcancel()
 
#else
 
# define CYG_CANCELLATION_POINT CYG_EMPTY_STATEMENT
 
#endif
 
//=============================================================================
// Internal exports
 
//-----------------------------------------------------------------------------
// Exports from misc.cxx
 
// Current directory info
__externC cyg_mtab_entry *cyg_cdir_mtab_entry;
__externC cyg_dir cyg_cdir_dir;
 
__externC int cyg_mtab_lookup( cyg_dir *dir, const char **name, cyg_mtab_entry **mte);
 
//-----------------------------------------------------------------------------
// Exports from fd.cxx
 
__externC void cyg_fd_init();
 
__externC cyg_file *cyg_file_alloc();
 
__externC void cyg_file_free(cyg_file * fp);
 
__externC int cyg_fd_alloc(int low);
 
__externC void cyg_fd_assign(int fd, cyg_file *fp);
 
__externC int cyg_fd_free(int fd);
 
__externC cyg_file *cyg_fp_get( int fd );
 
__externC void cyg_fp_free( cyg_file *fp );
 
__externC void cyg_file_lock( cyg_file *fp, cyg_uint32 syncmode );
 
__externC void cyg_file_unlock( cyg_file *fp, cyg_uint32 syncmode );
 
//-----------------------------------------------------------------------------
// Exports from socket.cxx
 
__externC void cyg_nstab_init();
 
//-----------------------------------------------------------------------------
#endif // ifndef CYGONCE_FIO_H
// End of fio.h