rename.c

嵌入式系统中文件系统源代码

/*************************************************************
File Name: rename.C                                          *
**************************************************************
Programmer: MSC
Last Modified Date: 2000/02/26
Compiler : GNU Cross-compiler/SDS
Platform : X86 protection mode, MIPS, Dragonball
Usage :
	int rename(const char *oldname, const char *newname)
*************************************************************/

/*************************************************************
 		  	Header Files
**************************************************************/
#include <sys/syscall.h>
//#include "myansi.h"
#include <ramdisk.h>
#include <rename.h>



#ifdef RAMDISK_ID



/* basic.c */
extern int		InitRD;
//extern int		RDerrno;
extern int		RD_SemaphoreID;

/* fio.c */
extern struct RD_FILE **RD_HandleTable;
#ifdef CURRENT_DIR_ENABLE
	extern unsigned char RD_CurrentPathname[MAX_PATH_LENGTH];
#endif


/*************************************************************
Function: RD_rename(oldname, newname)
Description:
	rename an existing file/dir
Input:
	oldname - old file/dir name
	newname - new file/dir name
Output:
	0:  Success
	-1: Failure
Note:	oldname/newname can't be '\\'(root)
	newname can't be duplicated
**************************************************************/
int RD_rename(unsigned char *oldname, unsigned char *newname)
{
  int status;

  if (InitRD == FALSE)
  {
	RDerrno = ERROR_FILE_SYSTEM_NOT_INIT;
	return -1;
  }

  sc_waitSemaphore(RD_SemaphoreID);

  status = RD_rename_r(oldname, newname);

  sc_signalSemaphore(RD_SemaphoreID);

  return status;
}



/*************************************************************
Function: RD_rename_r(oldname, newname)
Description:
	rename an existing file/dir
Input:
	oldname - old file/dir name
	newname - new file/dir name
Output:
	0:  Success
	-1: Failure
Note:	oldname/newname can'be '\\'(root)
	newname can't be duplicated
ThreadSafe:
**************************************************************/
/* 虫