Byl p\u0159edstaven prvn\u00ed vyd\u00e1n\u00ed knihovny Aya, kter\u00e1 umo\u017e\u0148uje vytv\u00e1\u0159et eBPF handlerov\u00e9 programy v jazyce Rust, spou\u0161t\u011bn\u00e9 uvnit\u0159 j\u00e1dra Linux v speci\u00e1ln\u00edm virtu\u00e1ln\u00edm stroji s JIT. Na rozd\u00edl od jin\u00fdch n\u00e1stroj\u016f pro v\u00fdvoj eBPF program\u016f, Aya nepou\u017e\u00edv\u00e1 libbpf a kompil\u00e1tor bcc, ale nab\u00edz\u00ed vlastn\u00ed implementaci napsanou v Rustu, kter\u00e1 vyu\u017e\u00edv\u00e1 crate bal\u00ed\u010dek libc pro p\u0159\u00edm\u00e9 vol\u00e1n\u00ed syst\u00e9mov\u00fdch v\u00fdzev j\u00e1dra. Pro sestaven\u00ed Aya nen\u00ed nutn\u00e9 m\u00edt k dispozici n\u00e1stroje pro jazyk C a hlavi\u010dkov\u00e9 soubory j\u00e1dra. K\u00f3d knihovny je distribuov\u00e1n pod licencemi MIT a Apache 2.0. <\/p>\n
Hlavn\u00ed funkce: <\/p>\n
Projekt je zat\u00edm pova\u017eov\u00e1n za experiment\u00e1ln\u00ed — API je\u0161t\u011b nen\u00ed stabilizov\u00e1no a st\u00e1le se vyv\u00edj\u00ed. Tak\u00e9 je\u0161t\u011b nebyly realizov\u00e1ny v\u0161echny zam\u00fd\u0161len\u00e9 mo\u017enosti. Do konce roku v\u00fdvoj\u00e1\u0159i pl\u00e1nuj\u00ed dot\u00e1hnout funkcionalitu Aya na \u00farove\u0148 libbpf a v lednu 2022 p\u0159edstavit prvn\u00ed stabiln\u00ed verzi. Je tak\u00e9 pl\u00e1nov\u00e1no spojen\u00ed \u010d\u00e1st\u00ed Aya pot\u0159ebn\u00fdch pro psan\u00ed k\u00f3du v Rust pro j\u00e1dro Linux s komponenty pracuj\u00edc\u00edmi v u\u017eivatelsk\u00e9m prostoru a pou\u017e\u00edvan\u00fdmi pro na\u010d\u00edt\u00e1n\u00ed, p\u0159ipojov\u00e1n\u00ed a interakci s programy eBPF. <\/p>\n
Pripom\u00edn\u00e1me, \u017ee eBPF je vestav\u011bn\u00fd interpret bajtk\u00f3du v j\u00e1d\u0159e Linuxu, kter\u00fd umo\u017e\u0148uje vytv\u00e1\u0159et zpracovatele s\u00ed\u0165ov\u00fdch operac\u00ed, sledovat \u010dinnost syst\u00e9m\u016f, zachyt\u00e1vat syst\u00e9mov\u00e9 vol\u00e1n\u00ed, kontrolovat p\u0159\u00edstup, zpracov\u00e1vat ud\u00e1losti se zachov\u00e1n\u00edm \u010dasov\u00e9ho raz\u00edtka, po\u010d\u00edtat frekvenci a \u010das prov\u00e1d\u011bn\u00ed operac\u00ed, vykon\u00e1vat trasov\u00e1n\u00ed pomoc\u00ed kprobes\/uprobes\/tracepoints. D\u00edky aplikaci JIT-kompilace se bajtk\u00f3d na m\u00edst\u011b p\u0159ekl\u00e1d\u00e1 na strojov\u00e9 instrukce a prov\u00e1d\u00ed se s v\u00fdkonem nativn\u00edho k\u00f3du. XDP poskytuje prost\u0159edky pro spu\u0161t\u011bn\u00ed BPF-program\u016f na \u00farovni s\u00ed\u0165ov\u00e9ho ovlada\u010de s mo\u017enost\u00ed p\u0159\u00edm\u00e9ho p\u0159\u00edstupu k DMA-bufru paket\u016f, co\u017e umo\u017e\u0148uje vytv\u00e1\u0159et vysoce v\u00fdkonn\u00e9 zpracovatele pro pr\u00e1ci v podm\u00ednk\u00e1ch vysok\u00e9 s\u00ed\u0165ov\u00e9 z\u00e1t\u011b\u017ee. \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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Zdroj: opennet.ru<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"