/*****************************************************************************\*                     EFSL - Embedded Filesystems Library                     **                     -----------------------------------                     **                                                                             ** Filename : linuxfile.c                                                      ** Release  : 0.3 - devel                                                      ** Description : This file contains the functions needed to use efs for        **               accessing files under linux. This interface is meant          **               to be used for debugging purposes.                            **                                                                             ** This program 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; version 2                     ** of the License.                                                             **                                                                             ** This program 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.                                **                                                                             ** 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.            **                                                                             **                                                    (c)2006 Lennart Yseboodt **                                                    (c)2006 Michael De Nil   *\*****************************************************************************//*****************************************************************************/#include "linuxfile.h"/*****************************************************************************//* ****************************************************************************   * short if_initInterface(hwInterface* file, char* fileName) * Description: This function should bring the hardware described in file in a * ready state to receive and retrieve data. * Return value: Return 0 on succes and -1 on failure.*/esint8 lf_init(void* LFI){	eint32 sc;		Fopen(&(((linuxFileInterface*)LFI)->imageFile),(eint8*)((linuxFileInterface*)LFI)->fileName);	sc=getFileSize(((linuxFileInterface*)LFI)->imageFile);	((linuxFileInterface*)LFI)->sectorCount=sc/512;	return(0);}/*****************************************************************************/ /* ****************************************************************************   * short if_readBuf(hwInterface* file,unsigned long address,unsigned char* buf) * Description: This function should fill the characterpointer buf with 512  * bytes, offset by address*512 bytes. Adress is thus a LBA address. * Return value: Return 0 on success and -1 on failure.*/esint8 lf_readBuf(void* LFI,euint32 address,euint8* buf){	/*printf("READ  %li\n",address);*/	if(lf_setPos(LFI,address))return(-1);	if( fread((void*)buf,512,1,((linuxFileInterface*)LFI)->imageFile) != 1) return(-1);	return(0);}/*****************************************************************************/ /* ****************************************************************************   * short if_writeBuf(hwInterface* file,unsigned long address,unsigned char* buf) * Description: This function writes 512 bytes from uchar* buf to the hardware * disc described in file. The write offset should be address sectors of 512 bytes. * Return value: Return 0 on success and -1 on failure.*/esint8 lf_writeBuf(void* LFI,euint32 address,euint8* buf){	/*printf("WRITE %li\n",address);*/	if(lf_setPos(LFI,address))return(-1);	if((fwrite((void*)buf,512,1,((linuxFileInterface*)LFI)->imageFile))!=1){		perror("cf_writeBuf:");		exit(-1);	}	fflush(((linuxFileInterface*)LFI)->imageFile);	return(0);}/*****************************************************************************/ esint8 lf_ioctl(void* LFI,euint16 ctl,void* data){	switch(ctl){		case IOCTL_NOP:			return(0);			break;		case IOCTL_SECTORCOUNT:			*((euint32*)data)=getFileSize(((linuxFileInterface*)LFI)->imageFile)/512;			return(0);			break;		default:			return(-1);			break;	}}/* ****************************************************************************   * short if_setPos(hwInterface* file,unsigned long address) * Description: This function may or may not be required. It would set the write * or read buffer offset by 512*address bytes from the beginning of the disc. * Return value: Return 0 on success and -1 on failure.*/esint8 lf_setPos(void* LFI,euint32 address){	if(address>(((linuxFileInterface*)LFI)->sectorCount-1)){		DBG((TXT("Illegal address\n")));		exit(-1);	}	if((fseek(((linuxFileInterface*)LFI)->imageFile,512*address,SEEK_SET))!=0){		perror("cf_setPos:");		exit(-1);	}	return(0);}/*****************************************************************************/