scan.h

嵌入式系统中文件系统源代码

#ifndef _SCAN_H
#define _SCAN_H

#include "ramdisk.h"

struct scanDir
{
  unsigned char pathName[MAX_PATH_LENGTH];	// the complete path name of the dir
  struct diskBlock *startBlock;			// the starting block (for ROOT dir)
  struct directory *theEntry;			// pointer to the directory entry of the dir (for sub-dir)
};


/*************************************************************
Fuction : RD_scanDisk
	Scan the RAMDisk for errors
Input:
	interactive - ECHO_ON: show progress during scanning
		      ECHO_OFF: show nothing during scanning
	fix - 1: automatically fix error
	      0: report only, don't fix
Output:
	        0: no error is found
	       -1: system error (check RDerrno)
	Otherwise:
		bit 0: File/Dir error
		bit 1: Disk space inconsistent
**************************************************************/
char RD_scanDisk(char interactive, char fix);
char RD_scanDisk_r(char interactive, char fix, long *totalUsedSize, long *totalFileSize, long *totalCompressSize);


/*************************************************************
Fuction : RD_checkFile
	Check the integrity of a file entry
Input:
	options - interactive? auto-fix?
	pathname - the pathname of the file
	entry - the directory structure of the target file
	strTemp - a string buffer
Output:
	totalFileSize - the total size of the files
	totalCompressSize - the total compressed size of the files
Return value:
	-1   : file has error 
	else : actual memory size taken by the file
**************************************************************/
long RD_checkFile(char options, unsigned char *pathname, struct directory *entry, long *totalFileSize, long *totalCompressSize, char *strTemp);


/*************************************************************
Fuction : RD_checkDir
	Check the integrity of a dir
Input:
	options - interactive? auto-fix?
	target - the directory information of the directory being checked
	strTemp - a string buffer
Output:
	totalFileSize - the total size of the files
	totalCompressSize - the total compressed size of the files
Return value:
	  -1: system error
	else; the total RAMDisk memory size taken by the dir excluding its sub-dirs
**************************************************************/
long RD_checkDir(char options, struct scanDir *targetDir, long *totalFileSize, long *totalCompressSize, char *strTemp);


#endif