Rust for Linux is a series of

patch Patch or Patches may refer to: Arts, entertainment and media * Patch Johnson, a fictional character from ''Days of Our Lives'' * Patch (''My Little Pony''), a toy * "Patches" (Dickey Lee song), 1962 * "Patches" (Chairmen of the Board song) ...

es to the

Linux kernel The Linux kernel is a free and open-source, monolithic, modular, multitasking, Unix-like operating system kernel. It was originally authored in 1991 by Linus Torvalds for his i386-based PC, and it was soon adopted as the kernel for the GNU ope ...

that adds

Rust Rust is an iron oxide, a usually reddish-brown oxide formed by the reaction of iron and oxygen in the catalytic presence of water or air moisture. Rust consists of hydrous iron(III) oxides (Fe2O3·nH2O) and iron(III) oxide-hydroxide (FeO(OH ...

as a second

programming language A programming language is a system of notation for writing computer programs. Most programming languages are text-based formal languages, but they may also be graphical. They are a kind of computer language. The description of a programming ...

to C for writing kernel components.

History

The Linux kernel has been primarily written in C and

assembly language In computer programming, assembly language (or assembler language, or symbolic machine code), often referred to simply as Assembly and commonly abbreviated as ASM or asm, is any low-level programming language with a very strong correspondence be ...

since its first release in 1991. Around 1997, the addition of

C++ C++ (pronounced "C plus plus") is a high-level general-purpose programming language created by Danish computer scientist Bjarne Stroustrup as an extension of the C programming language, or "C with Classes". The language has expanded significan ...

was considered and experimented upon for two weeks before being scrapped. Rust was created in 2006 and combines the performance of

low-level programming languages A low-level programming language is a programming language that provides little or no Abstraction (computer science), abstraction from a computer's instruction set architecture—commands or functions in the language map that are structurally sim ...

(such as C) with a focus on

memory safety Memory safety is the state of being protected from various software bugs and Vulnerability (computing), security vulnerabilities when dealing with random-access memory, memory access, such as buffer overflows and dangling pointers. For example, J ...

and a

user-friendly Usability can be described as the capacity of a system to provide a condition for its users to perform the tasks safely, effectively, and efficiently while enjoying the experience. In software engineering, usability is the degree to which a soft ...

tool set and

syntax In linguistics, syntax () is the study of how words and morphemes combine to form larger units such as phrases and sentences. Central concerns of syntax include word order, grammatical relations, hierarchical sentence structure ( constituency) ...

. The Rust for Linux project was announced in 2020 in the

Linux kernel mailing list The Linux kernel mailing list (LKML) is the main electronic mailing list for Linux kernel development, where the majority of the announcements, discussions, debates, and flame wars over the kernel take place. Many other mailing lists exist to di ...

with goals of leveraging Rust's memory safety to reduce bugs when writing

kernel driver In computing, a device driver is a computer program that operates or controls a particular type of device that is attached to a computer or automaton. A driver provides a software interface to hardware devices, enabling operating systems and ot ...

s. At the

Open Source Summit Open Source Summit (formerly LinuxCon) is a name for a series of annual conventions organized each year since 2009 by the Linux Foundation. The first LinuxCon took place in North America. Linux Foundation started organizing similar events in Eur ...

2022,

Linus Torvalds Linus Benedict Torvalds ( , ; born 28 December 1969) is a Finnish software engineer who is the creator and, historically, the lead developer of the Linux kernel, used by Linux distributions and other operating systems such as Android. He also c ...

stated that the incorporation of the project's work could begin as soon as the Linux 5.20 release, later named as Linux 6.0. The first release candidate for Linux 6.0 was created on 14 August 2022, without Rust support. In the release notes for Linux 6.0-rc1, Torvalds expressed his intention for adding Rust support, "I actually was hoping that we'd get some of the first rust infrastructure, and the multi-gen LRU VM, but neither of them happened this time around." On 19 September 2022, an article from

ZDNet ZDNET is a business technology news website owned and operated by Red Ventures. The brand was founded on April 1, 1991, as a general interest technology portal from Ziff Davis and evolved into an enterprise IT-focused online publication. Hist ...

revealed an email from Linus Torvalds stating that "Unless something odd happens, it

ust UST or Ust may refer to: Organizations * UST (company), American digital technology company * Equatorial Guinea Workers' Union * Union of Trade Unions of Chad (Union des Syndicats du Tchad) * United States Television Manufacturing Corp. * UST Gr ...

will make it into 6.1". In October 2022, a

pull request In software development, distributed version control (also known as distributed revision control) is a form of version control in which the complete codebase, including its full history, is mirrored on every developer's computer. Compared to centra ...

for accepting the implementation for Rust for Linux was approved by Torvalds. As of Linux 6.1, support was intentionally left minimal in order to allow developers to test the feature.

References

Free software programmed in Rust Linux software projects {{Free-software-stub