31 releases

new 0.3.40 Sep 27, 2020
0.3.37 Aug 31, 2020
0.3.35 Jul 5, 2020
0.3.21 Mar 28, 2020
0.3.10 Oct 6, 2019

#55 in Operating systems

Download history 103/week @ 2020-06-05 22/week @ 2020-06-12 37/week @ 2020-06-19 28/week @ 2020-06-26 87/week @ 2020-07-03 76/week @ 2020-07-10 32/week @ 2020-07-17 26/week @ 2020-07-24 3/week @ 2020-07-31 97/week @ 2020-08-07 13/week @ 2020-08-14 37/week @ 2020-08-21 54/week @ 2020-08-28 133/week @ 2020-09-04 20/week @ 2020-09-11 47/week @ 2020-09-18

212 downloads per month

MIT/Apache

1.5MB
33K SLoC

RustyHermit: libhermit-rs

Build Status Actions Status Documentation License Slack Status

libhermit-rs is the kernel of the RustyHermit unikernel project.

Building the kernel

Usually the kernel will be linked as static library to your applications.

  • Rust applications: Instructions can be found in the rusty-hermit repository.
  • For C/C++ applications: Instructions can be found in the hermit-playground repository.

Standalone static library build

If this does not fit your needs and you want to build the kernel as static library to link afterwards, you need the following:

The Rust nightly toolchain (official webpage), the source code of the Rust runtime, and llvm-tools:

rustup toolchain install nightly
rustup component add rust-src llvm-tools-preview

You can then build libhermit-rs with the following command

cargo build -Z build-std=core,alloc,panic_abort --target x86_64-unknown-hermit-kernel

The resulting library then can be found in target/x86_64-unknown-hermit-kernel/debug/libhermit.a

Control the kernel messages verbosity

libhermit-rs uses the lightweight logging crate log to print kernel messages. The environment variable HERMIT_LOG_LEVEL_FILTER controls the verbosity. You can change it by setting it at compile time to a string matching the name of a LevelFilter. If the variable is not set, or the name doesn't match, then LevelFilter::Info is used by default.

$ HERMIT_LOG_LEVEL_FILTER=Debug cargo build -Z build-std=core,alloc,panic_abort --target x86_64-unknown-hermit-kernel

Credits

libhermit-rs is derived from following tutorials and software distributions:

  1. Philipp Oppermann's excellent series of blog posts.
  2. Erik Kidd's toyos-rs, which is an extension of Philipp Opermann's kernel.
  3. The Rust-based teaching operating system eduOS-rs.

HermitCore's Emoji is provided for free by EmojiOne.

License

Licensed under either of

at your option.

Contribution

Unless you explicitly state otherwise, any contribution intentionally submitted for inclusion in the work by you, as defined in the Apache-2.0 license, shall be dual licensed as above, without any additional terms or conditions.

libhermit-rs is being developed on GitHub. Create your own fork, send us a pull request, and chat with us on Slack

Dependencies

~0.9–2MB
~35K SLoC