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Ability to construct virtual `Dir`s to mount files and subdirectories into

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还没有人认领这个 Issue。

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难度
5/5
预计耗时
一周以上
新手友好度
35/100
Issue 类型
功能
描述清晰度
基本清楚
活跃度
停滞
技术栈
rust
领域
operating-systems, security

调研方向

首先阅读现有的 Dir 构造 API 和 Pool 的 insert 方法，然后比较路径的打开和表示方式。确定是否可以在不打开虚拟文件和子目录的情况下挂载它们，同时保留递归能力限制。Done 应包括一个已确定的跨平台设计，包括提议的 Windows 驱动器根目录用例，以及有文档记录的行为和测试。

由索引模型根据 Issue 内容生成。

描述

Specifically with the option for those files/dirs to just be paths that don’t need to be opened when mounted. Note: When I say “mount” here this would only be internal to the Dir struct and not actual mounts on the underling filesystem. Similar to Pool’s insert methods.

Would particularly be interesting to create a root Dir which would just be / on Unix but on Windows a folder exposing all drive letters as subfolders. I understand that this specific use case may be controversial, as it seems to go against the spirit of this crate. But I believe the opposite to be true: The great thing about this API is that it doesn’t just have one or two layers (as more basic security systems), but arbitrarily many as each Dir recursively can be used to create narrower views. So I don’t think one global directory as the base to craft more specialised capabilities would inherently be a bad idea.

Based originally on thinking in https://github.com/bytecodealliance/wasmtime/issues/8552 to solve the problem of Windows (unlike Unix) not having a single root folder but essentially one for each volume, which makes cap-std difficult to use in some contexts.

I apologise should what I propose already be possible, in a quick look into the docs I haven’t figured out a way to do this.

主要语言
Rust
星标
821
派生
59
30 天内没有已合并 PR

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