{"id":120206,"date":"2024-10-16T19:09:07","date_gmt":"2024-10-16T17:09:07","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/proekt-asterinas-razvivaet-yadro-na-yazyke-rust-sovmestimoe-s-linux"},"modified":"2024-10-16T19:09:07","modified_gmt":"2024-10-16T17:09:07","slug":"proekt-asterinas-razvivaet-yadro-na-yazyke-rust-sovmestimoe-s-linux","status":"publish","type":"post","link":"https:\/\/prohoster.info\/pt\/blog\/news\/proekt-asterinas-razvivaet-yadro-na-yazyke-rust-sovmestimoe-s-linux","title":{"rendered":"O projeto Asterinas desenvolve um n\u00facleo em Rust, compat\u00edvel com Linux.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Um grupo de desenvolvedores da China est\u00e1 desenvolvendo o n\u00facleo Asterinas, escrito na linguagem Rust e destinado ao uso em sistemas operacionais de prop\u00f3sito geral. Para simplificar a integra\u00e7\u00e3o com componentes de sistema j\u00e1 desenvolvidos, o n\u00facleo fornece uma ABI (Interface Bin\u00e1ria de Aplicativo) compat\u00edvel com o n\u00facleo Linux e que pode ser utilizado no lugar dele. O c\u00f3digo do projeto \u00e9 distribu\u00eddo sob a licen\u00e7a MPL (Licen\u00e7a P\u00fablica Mozilla). <\/p>\n

O projeto est\u00e1 em desenvolvimento desde o outono de 2022 e pretende alcan\u00e7ar, ainda este ano, um n\u00edvel adequado para uso generalizado em m\u00e1quinas virtuais<\/a> sistemas com arquitetura x86-64. A partir do pr\u00f3ximo ano, o foco principal ser\u00e1 na implementa\u00e7\u00e3o do suporte a hardware e outras arquiteturas de CPU. Entre as \u00e1reas priorit\u00e1rias de aplica\u00e7\u00e3o est\u00e3o sistemas que dependem da Linux ABI, mas que exigem um n\u00edvel mais alto de seguran\u00e7a. Por exemplo, o Asterinas \u00e9 proposto para formar um ambiente de sistema seguro. m\u00e1quinas virtuais<\/a>, para os quais s\u00e3o utilizadas tecnologias como ARM CCA, AMD SEV e Intel TDX, al\u00e9m de na parte do sistema host que garante a execu\u00e7\u00e3o de cont\u00eaineres. <\/p>\n

Para reduzir a probabilidade de erros ao trabalhar com mem\u00f3ria, que s\u00e3o a principal fonte das vulnerabilidades mais perigosas, a Asterinas foi escrita utilizando a linguagem Rust e a t\u00e1tica de uso limitado de blocos unsafe. O n\u00facleo \u00e9 constru\u00eddo usando uma arquitetura framekernel, na qual os desenvolvedores tentaram combinar as capacidades de isolamento de micro n\u00facleos com a efici\u00eancia de n\u00facleos monol\u00edticos. <\/p>\n

Os componentes do n\u00facleo no Asterinas s\u00e3o alocados em um espa\u00e7o de endere\u00e7o comum, e a seguran\u00e7a \u00e9 alcan\u00e7ada atrav\u00e9s da separa\u00e7\u00e3o l\u00f3gica do c\u00f3digo seguro e do c\u00f3digo onde podem surgir problemas de seguran\u00e7a. O n\u00facleo \u00e9 dividido em duas partes, escritas em Rust: OS Framework e OS Services. No OS Services, a utiliza\u00e7\u00e3o de blocos unsafe \u00e9 proibida, e todas as opera\u00e7\u00f5es em baixo n\u00edvel que exigem a execu\u00e7\u00e3o de c\u00f3digo em blocos unsafe s\u00e3o transferidas para o OS Framework e est\u00e3o dispon\u00edveis apenas atrav\u00e9s de uma API de alto n\u00edvel. Todas as chamadas de sistema, sistemas de arquivos e drivers s\u00e3o implementados no n\u00edvel do OS Services e n\u00e3o podem incluir blocos unsafe. <\/p>\n

Ao desenvolver servi\u00e7os e m\u00f3dulos do sistema, recomenda-se o uso da ferramenta OSDK (Operating System Development Kit), que fornece a utilidade cargo-osdk para criar, compilar, testar e executar componentes do sistema operacional. Para os desenvolvedores, um conjunto de bibliotecas OSTD (Operating System Standard Library) foi preparado, representando uma edi\u00e7\u00e3o das bibliotecas padr\u00e3o do Rust (crate std), adaptada para uso em componentes do sistema operacional.
\n
Fonte: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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