efs.c

efsl-0.2.8(sd card 文件系统 fat)

/*****************************************************************************\
*              efs - General purpose Embedded Filesystem library              *
*          --------------------- -----------------------------------          *
*                                                                             *
* Filename : efs.h                                                            *
* Description : This should become the wrapper around efs. It will contain    *
*               functions like efs_init etc.                                  *
*                                                                             *
* 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 "efs.h"
/*****************************************************************************/

/* ****************************************************************************  
 * esint8 efs_init(EmbeddedFileSystem * efs,eint8* opts)
 * Description: This function initialises all subelements of a filesystem.
 * It sets the pointerchain and verifies each step.
 * Return value: 0 on success and -1 on failure.
*/
esint8 efs_init(EmbeddedFileSystem * efs,eint8* opts)
{
	if(if_initInterface(&efs->myCard, opts)==0)
	{
		ioman_init(&efs->myIOman,&efs->myCard,0);
		disc_initDisc(&efs->myDisc, &efs->myIOman);
		part_initPartition(&efs->myPart, &efs->myDisc);
		if(efs->myPart.activePartition==-1){
			efs->myDisc.partitions[0].type=0x0B;
			efs->myDisc.partitions[0].LBA_begin=0;
			efs->myDisc.partitions[0].numSectors=efs->myCard.sectorCount;	
			/*efs->myPart.activePartition = 0;*/
			/*efs->myPart.disc = &(efs->myDisc);*/
			part_initPartition(&efs->myPart, &efs->myDisc);
		}
		/*part_initPartition(&efs->myPart, &efs->myDisc);*/
		if(fs_initFs(&efs->myFs, &efs->myPart))
			return(-2);
		return(0);
	}
	return(-1);
}
/*****************************************************************************/