Subversion Repositories openrisc

#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