[HW5] About Read and Execution

[ianyk0213]

이름 Your Name

KimDohyung(김도형)

질문 Question

안녕하세요.

다름이 아니라 acl과 capability 방식 모두에서 read는 반드시 secret file을 대상으로만 일어난다고 가정할 수 있나요? 설명에 따르면 read에 성공하면 무조건 compromised를 반환하게 되어있어서 질문드립니다.

감사합니다

번역본 Translated Version

Hello.
Can we assume "read" command always occur for "secret file" in both acl and capability? I ask this because according to description, we always return compromised if we success to read.

Thank you

[bongjunj]

안녕하세요.

read가 항상 secret file에 대해서만 일어난다고 가정할 수 없습니다.
혹시 어떤 설명에서 헷갈리셨는지 구체적인 설명을 인용해주실 수 있나요?

Hi,

No, you can't assume that a read command is always performed on the secret file.
Could you please clarify which part led to the confusion?

[ssamt]

| Read | Read a secret file. Implement Acl.read to return Compromised if the operation is allowed, or Access_denied otherwise. |

Not the asker, but I think he means this part in README - it says if read is allowed for any file, it returns Compromised. It would be strange if reading some file other than the secret file would return Compromised. Or does it mean that Acl.read should return Compromised, but run should not?

[bongjunj]

Hi, I understand the ambiguity. Thank you for pointing that out.
read only returns Compromised if it reads a secret file.
Please assume that reading a file other than the secret file is out of scope of this assignment.
We plan to clarify the document.

[ssamt]

I see, thank you!