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xous-core/services/shellchat
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Sean Cross 5dfad296ae xous: mark MemoryRange::as_slice and friends as unsafe 
Mark `MemoryRange::as_slice()` and `MemoryRange::as_slice_mut()` as
unsafe.

This is due to the fact that not all representable types can be cast to
an arbitrary value. For example, if Process A sends random values to
Process B, then Process B casts the memory to a slice of `bool`, then
any values that are not 0 or 1 are undefined.

Because these functions can leak UB into the program, they are marked as
unsafe.

This patch adds `unsafe {}` blocks to all instances where this function
is called. Additionally, all instances have been checked to verify that
they do not cast to any invalid types -- most use `u8` or `u32`.

Additionally, the long-deprecated `MemoryRange::from_parts()` call was
removed, since that causes UB without being marked as unsafe.

Signed-off-by: Sean Cross <sean@xobs.io>
2023-09-12 10:07:38 +08:00
..
locales add automounter to shellchat, and initial wait message 2022-11-06 03:11:23 +08:00
src xous: mark MemoryRange::as_slice and friends as unsafe 2023-09-12 10:07:38 +08:00
Cargo.toml publish package updates, sync to release tag 2023-08-08 14:35:49 +08:00
README.md
shellchat_screen1.png

README.md

Shell Chat

shellchat is the basic command line environment for Precursor. It houses most of the system maintenanence and test commands.

If you'd like to make your own REPL-type app, check out apps/repl/ for a pared-down version of shellchat which is a better starting point.