#include?
#include?
#include?
#include?
#include?
#include?
#include?

#include?“stub.h“

static?long?pagesize?=?-1;

static?inline?void?*pageof（const?void*?p）
{?
	return?（void?*）（（unsigned?long）p?&?~（pagesize?-?1））;
}

void?stub_set（struct?func_stub?*pstub?void?*fn?void?*fn_stub）
{	
????pstub->fn?=?fn;
????memcpy（pstub->code_buf?fn?CODESIZE）;
????
????if?（-1?==?mprotect（pageof（fn）?pagesize?*?2?PROT_READ?|?PROT_WRITE?|?PROT_EXEC））
????{
????????perror（“mprotect?to?w+r+x?faild“）;
????????exit（errno）;
????}

	*（unsigned?char?*）fn?=?（unsigned?char）0xE9;
????*（unsigned?int?*）（（unsigned?char?*）fn?+?1）?=?（unsigned?char?*）fn_stub?-?（unsigned?char?*）fn?-?CODESIZE;
????
????if?（-1?==?mprotect（pageof（fn）?pagesize?*?2?PROT_

?屬性????????????大小?????日期????時(shí)間???名稱
-----------?---------??----------?-----??----
?????文件????????1643??2014-07-27?17:29??stub\stub.c
?????文件?????????319??2014-07-27?17:22??stub\stub.h
?????文件?????????670??2014-07-27?17:30??stub\test_stub.c
?????目錄???????????0??2014-07-28?00:46??stub\