问题描述
我做了同样的事情，我有1个应用程序A，每7秒打印一个衬垫，另一个代码具有另一个打印，injection.o的功能。当我到达打开我的目标文件injection.o的步骤并尝试将其映射到内存中时，我得到了几个错误。
当我第一次打开时（injection.o，2）它总是返回-1。然后我做了调用open（injection.o，O_RDWR）。然后它返回一个fd = 3.
然后当我做mmap（1,2504,1 | 2 | 4,1,3,0）时，2504是我的对象文件大小，它再次只返回-1。
我不知道该怎么做。任何人都可以帮助我吗？
Br
Hung
I have done the same thing I have 1 application A that just prints a one liner each 7 seconds and another code that has a function with another print, injection.o. When I get to the step to open my object file injection.o and trying to map it in the memory I get several errors.
When I first do "call open("injection.o", 2)" it always return -1. I then did "call open("injection.o", "O_RDWR")". Then it returned a fd = 3.
When I then do mmap(1, 2504, 1|2|4, 1, 3, 0), 2504 is my objects file size, it again only returned -1.
I have no clue on what to do. Can anyone help me?
Br
Hung
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