asmlinkage int sys_mycopy(int sfile,int dfile,char *buffer){int temp=100;int writebytes;while(temp==100){	if((temp=sys_read(sfile,buffer,100))==-1)		return  -1;      	if((writebytes=sys_write(dfile,buffer,temp))==-1)		return  -2;           }sys_close(sfile);sys_close(dfile);}