totally-safe-transmute VS cargo-deny

For example, there is this (pure safe Rust) code: https://github.com/ben0x539/totally-safe-transmute/blob/main... which accesses external resources (/proc/self/mem) in order to violate the safety guarantees.

The first is the totally_safe_transmute crate. I mean, who wouldn't love library code that has .expect("welp") and .expect("oof") as its error handling? But that's not even the really scary part. Issue #2 ("i hate this") remains open to this day, but for obvious reasons there's no chance of resolution. This post has some context and a line-by-line explanation of how it works.

You mean like this?

You can also do that in rust on linux: https://github.com/ben0x539/totally-safe-transmute/blob/master/src/lib.rs

I want to correct this statement: Rust can be safer, but not if a library you use contains unsound code. Unsoundness is most often caused by unsafe code, but not always (totally_safe_transmute, anyone?). There is a misconception that unsafe code blocks are always unsound and should be avoided at all costs, but they're completely fine if the safety contracts are upheld. In fact, unsafe blocks isolate the potential issues to make it easier to identify where undefined behavior may be occurring. unsafe code blocks are a feature of the language, and their usage should not be viewed as opting out of any safety the language provides, imo.

Just reimplement totally_safe_transmute in Zig. No need for unsafe.

Why transmute() when you can totally_safe_transmute()?

Well, there is always the totally-safe-transmute.

They should use https://github.com/ben0x539/totally-safe-transmute

Tip: You can check the licenses of all your dependencies (recursively) using cargo-deny: https://github.com/EmbarkStudios/cargo-deny

cargo-deny

cargo-deny can help block specified versions of a crate and even has some advisory features that can probably used to block crate with reported vulnerabilities

cargo deny for fetching crates only from trusted sources, blacklisting crates, etc.

Use cargo audit or cargo deny to check the crates in your Cargo.lock to ensure they don't contain any vulnerabilities.

> Explain the crate scanner thing?

I assume a reference to tools that help manage potential issues around dependencies, e.g.:

* https://github.com/rustsec/rustsec/tree/main/cargo-audit

* https://github.com/EmbarkStudios/cargo-deny

"[cargo-audit] Audit Cargo.lock files for crates with security vulnerabilities reported to the RustSec Advisory Database."

"cargo-deny is a cargo plugin that lets you lint your project's dependency graph to ensure all your dependencies conform to your expectations and requirements." e.g. license, security advisories, source.

cargo-deny does license and security advisory checking, and cargo-geiger does unsafe checking.

cargo-deny

OpenSSL has been banned in our project for a variety of reasons via cargo-deny for around a year and half, it was actually one of the reasons we created it in the first place.