Foi lan\u00e7ado o primeiro vers\u00e3o da biblioteca Aya, que permite criar manipuladores eBPF na linguagem Rust, executados dentro do n\u00facleo Linux em uma m\u00e1quina virtual especial com JIT. Ao contr\u00e1rio de outras ferramentas para desenvolver programas eBPF, Aya n\u00e3o utiliza libbpf e o compilador bcc, oferecendo em vez disso sua pr\u00f3pria implementa\u00e7\u00e3o, escrita em Rust, que usa o pacote crate libc para acessar diretamente as chamadas de sistema do n\u00facleo. N\u00e3o \u00e9 necess\u00e1rio ter ferramentas da linguagem C ou arquivos de cabe\u00e7alho do n\u00facleo para compilar Aya. O c\u00f3digo da biblioteca \u00e9 distribu\u00eddo sob as licen\u00e7as MIT e Apache 2.0. <\/p>\n
Principais funcionalidades: <\/p>\n
O projeto ainda \u00e9 considerado experimental \u2014 a API ainda n\u00e3o est\u00e1 estabilizada e continua a evoluir. Al\u00e9m disso, nem todas as funcionalidades planejadas foram implementadas. At\u00e9 o final do ano, os desenvolvedores esperam levar a funcionalidade do Aya ao paridade com libbpf, e em janeiro de 2022 formar o primeiro lan\u00e7amento est\u00e1vel. Tamb\u00e9m est\u00e1 previsto combinar partes do Aya necess\u00e1rias para a escrita de c\u00f3digo em Rust para o kernel Linux com componentes que operam no espa\u00e7o do usu\u00e1rio e que s\u00e3o utilizados para carregar, anexar e interagir com programas eBPF. <\/p>\n
Lembramos que o eBPF \u00e9 um interpretador de bytecode embutido no n\u00facleo do Linux, permitindo a cria\u00e7\u00e3o de manipuladores de opera\u00e7\u00f5es de rede, o rastreamento do funcionamento de sistemas, a intercepta\u00e7\u00e3o de chamadas de sistema, o controle de acesso, o processamento de eventos com a preserva\u00e7\u00e3o de temporiza\u00e7\u00e3o, a contagem de frequ\u00eancia e tempo de execu\u00e7\u00e3o de opera\u00e7\u00f5es, e a execu\u00e7\u00e3o de tra\u00e7amentos utilizando kprobes\/uprobes\/tracepoints. Gra\u00e7as \u00e0 aplica\u00e7\u00e3o da compila\u00e7\u00e3o JIT, o bytecode \u00e9 traduzido em tempo real para instru\u00e7\u00f5es de m\u00e1quina e executado com a performance de c\u00f3digo nativo. O XDP fornece os meios para executar programas BPF no n\u00edvel do driver de rede, com a possibilidade de acesso direto ao buffer DMA de pacotes, o que permite a cria\u00e7\u00e3o de manipuladores de alta performance para operar sob condi\u00e7\u00f5es de alta carga de rede. \u041f\u0440\u0435\u0434\u0441\u0442\u0430\u0432\u043b\u0435\u043d \u043f\u0435\u0440\u0432\u044b\u0439 \u0432\u044b\u043f\u0443\u0441\u043a \u0431\u0438\u0431\u043b\u0438\u043e\u0442\u0435\u043a\u0438 Aya, \u043f\u043e\u0437\u0432\u043e\u043b\u044f\u044e\u0449\u0435\u0439 \u0441\u043e\u0437\u0434\u0430\u0432\u0430\u0442\u044c \u043d\u0430 \u044f\u0437\u044b\u043a\u0435 Rust \u043e\u0431\u0440\u0430\u0431\u043e\u0442\u0447\u0438\u043a\u0438 eBPF, \u0437\u0430\u043f\u0443\u0441\u043a\u0430\u0435\u043c\u044b\u0435 \u0432\u043d\u0443\u0442\u0440\u0438 \u044f\u0434\u0440\u0430 Linux \u0432 \u0441\u043f\u0435\u0446\u0438\u0430\u043b\u044c\u043d\u043e\u0439 \u0432\u0438\u0440\u0442\u0443\u0430\u043b\u044c\u043d\u043e\u0439 \u043c\u0430\u0448\u0438\u043d\u0435 \u0441 JIT. \u0412 \u043e\u0442\u043b\u0438\u0447\u0438\u0435 \u043e\u0442 \u0434\u0440\u0443\u0433\u0438\u0445 \u0438\u043d\u0441\u0442\u0440\u0443\u043c\u0435\u043d\u0442\u043e\u0432 \u0434\u043b\u044f \u0440\u0430\u0437\u0440\u0430\u0431\u043e\u0442\u043a\u0438 eBPF-\u043f\u0440\u043e\u0433\u0440\u0430\u043c\u043c, Aya \u043d\u0435 \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442 libbpf \u0438 \u043a\u043e\u043c\u043f\u0438\u043b\u044f\u0442\u043e\u0440 bcc, \u0430 \u043f\u0440\u0435\u0434\u043b\u0430\u0433\u0430\u0435\u0442 \u0441\u043e\u0431\u0441\u0442\u0432\u0435\u043d\u043d\u0443\u044e \u0440\u0435\u0430\u043b\u0438\u0437\u0430\u0446\u0438\u044e, \u043d\u0430\u043f\u0438\u0441\u0430\u043d\u043d\u0443\u044e \u043d\u0430 Rust, \u043a\u043e\u0442\u043e\u0440\u0430\u044f \u0438\u0441\u043f\u043e\u043b\u044c\u0437\u0443\u0435\u0442 crate-\u043f\u0430\u043a\u0435\u0442 libc \u0434\u043b\u044f \u043f\u0440\u044f\u043c\u043e\u0433\u043e \u043e\u0431\u0440\u0430\u0449\u0435\u043d\u0438\u044f \u043a \u0441\u0438\u0441\u0442\u0435\u043c\u043d\u044b\u043c \u0432\u044b\u0437\u043e\u0432\u0430\u043c \u044f\u0434\u0440\u0430. 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Fonte: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"