filesystem.c

嵌入式linux（arm9）的平台下

#include "filesystem.h"
#include "fat.h"
#include "pcmcia.h"
#include "ide.h"

DataFunctions filesystemDataFunctions;

int filesystemLoad(DEVICE_TYPE device, int diskNumber)
{
	switch(device)
	{
	#if defined(CONFIG_HWBLOCK_PCMCIA)
		case PCMCIA: 
			if(pcmciaOpen(diskNumber))
				return filesystemLoadType(getPCMCIAFunctions());
			break;
	#endif
	#if defined(CONFIG_HWBLOCK_IDE)
		case IDE:
			if(ideOpen())
				return filesystemLoadType(getIDEFunctions());
			break;
	#endif
	#if defined(CONFIG_HWBLOCK_SD)
		case SDMS:
			if (sdOpen (diskNumber))
				return filesystemLoadType (getSDFunctions ());
			break;
	#endif
	}

	return 0;
}

int filesystemClose (DEVICE_TYPE device, int diskNumber)
{
	switch(device)
	{
	#if defined(CONFIG_HWBLOCK_PCMCIA)
		case PCMCIA: 
			return (pcmciaEject(diskNumber));
	#endif
	#if defined(CONFIG_HWBLOCK_IDE)
		case IDE:
			return ideEject();
	#endif
	#if defined(CONFIG_HWBLOCK_SD)
		case SDMS:
			return (sdEject (diskNumber));
	#endif
	}

	return 0;
}

int filesystemLoadType(DiskFunctions diskFunctions)
{
	if(fatLoad(diskFunctions))
	{
		filesystemDataFunctions = getFATFunctions();
		return 1;
	}
	return 0;
}

DataFunctions getFilesystemFunctions()
{
	return filesystemDataFunctions;
}