{"id":105081,"date":"2022-09-13T09:36:41","date_gmt":"2022-09-13T07:36:42","guid":{"rendered":"https:\/\/prohoster.info\/blog\/novosti-interneta\/wd-razrabatyvaet-nvme-drajver-na-yazyke-rust-eksperimenty-s-rust-vo-freebsd"},"modified":"2022-09-13T09:36:41","modified_gmt":"2022-09-13T07:36:42","slug":"wd-razrabatyvaet-nvme-drajver-na-yazyke-rust-eksperimenty-s-rust-vo-freebsd","status":"publish","type":"post","link":"https:\/\/prohoster.info\/ro\/blog\/news\/wd-razrabatyvaet-nvme-drajver-na-yazyke-rust-eksperimenty-s-rust-vo-freebsd","title":{"rendered":"WD dezvolt\u0103 un driver NVMe \u00een limbajul Rust. Experimente cu Rust \u00een FreeBSD","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

La conferin\u021ba Linux Plumbers 2022, care se desf\u0103\u0219oar\u0103 \u00een aceste zile, un inginer de la compania Western Digital a prezentat o lucrare despre dezvoltarea unui driver experimental pentru SSD-uri cu interfa\u021ba NVM-Express (NVMe), scris \u00een limbajul Rust \u0219i func\u021bion\u00e2nd la nivelul nucleului Linux. De\u0219i proiectul se afl\u0103 \u00eenc\u0103 \u00eentr-o etap\u0103 incipient\u0103 de dezvoltare, testele efectuate au ar\u0103tat c\u0103 performan\u021ba driverului NVMe scris \u00een Rust corespunde driverului NVMe existent \u00een nucleu, scris \u00een limbajul C.

\"WD<\/center>
\"WD<\/center> <\/p>\n

\u00cen lucrare se men\u021bioneaz\u0103 c\u0103 driverul NVMe actual, scris \u00een C, \u00eei satisface pe dezvoltatori, dar subsistemul NVMe reprezint\u0103 o bun\u0103 oportunitate de a explora fezabilitatea dezvolt\u0103rii driverelor \u00een Rust, deoarece este suficient de simplu, este utilizat pe scar\u0103 larg\u0103, prezint\u0103 cerin\u021be ridicate de performan\u021b\u0103, are o implementare de referin\u021b\u0103 verificat\u0103 pentru compara\u021bie \u0219i suport\u0103 diverse interfete (dev, pci, dma, blk-mq, gendisk, sysfs). <\/p>\n

Se subliniaz\u0103 c\u0103 driverul PCI NVMe pe Rust ofer\u0103 deja func\u021bionalitatea necesar\u0103 pentru operare, dar nu este \u00eenc\u0103 gata pentru utilizarea pe scar\u0103 larg\u0103, deoarece necesit\u0103 ajust\u0103ri suplimentare. Printre planurile de viitor se num\u0103r\u0103 eliminarea unor blocuri unsafe din cod, suportul pentru opera\u021biuni de dezinstalare a dispozitivelor \u0219i desc\u0103rcarea driverului, suportul pentru interfata sysfs, implementarea ini\u021bializ\u0103rii am\u00e2nate, crearea unui driver pentru blk-mq \u0219i experimente cu utilizarea modelului de programare asincron pentru queue_rq.

\r\n \"Reda\u021bi\r\n
<\/div>\r\n <\/div> <\/center> <\/p>\n

De asemenea, se eviden\u021biaz\u0103 experimentele desf\u0103\u0219urate de compania NCC Group pentru dezvoltarea driverelor \u00een Rust pentru nucleul FreeBSD. Ca exemplu, se analizeaz\u0103 \u00een detaliu un driver echo simplu, care returneaz\u0103 datele scrise \u00een fi\u0219ierul \/dev\/rustmodule. \u00cen urm\u0103toarea etap\u0103 a experimentelor, NCC Group ia \u00een considerare posibilitatea refacerii componentelor de baz\u0103 ale nucleului \u00een Rust pentru a \u00eembun\u0103t\u0103\u021bi securitatea opera\u021biunilor de re\u021bea \u0219i fi\u0219iere. <\/p>\n

\u00cen ciuda faptului c\u0103 a fost demonstrat\u0103 posibilitatea de a crea module simple \u00een limbajul Rust, o integrare mai str\u00e2ns\u0103 a Rust \u00een nucleul FreeBSD va necesita lucr\u0103ri suplimentare. De exemplu, se men\u021bioneaz\u0103 necesitatea cre\u0103rii unui set de straturi de abstrac\u021bie peste subsistemele \u0219i structurile nucleului, asem\u0103n\u0103toare cu extensiile preg\u0103tite de proiectul Rust for Linux. \u00cen viitor, se planific\u0103 desf\u0103\u0219urarea unor experimente similare cu nucleul Illumos \u0219i identificarea de abstrac\u021bii comune \u00een Rust, care ar putea fi utilizate \u00een driverele scrise \u00een Rust pentru Linux, BSD \u0219i Illumos. <\/p>\n

Conform datelor furnizate de Microsoft \u0219i Google, aproximativ 70% din vulnerabilit\u0103\u021bile din produsele lor software sunt cauzate de gestionarea nesigur\u0103 a memoriei. Se presupune c\u0103 utilizarea limbajului Rust va reduce riscul apari\u021biei vulnerabilit\u0103\u021bilor cauzate de gestionarea nesigur\u0103 a memoriei \u0219i va elimina apari\u021bia unor erori, cum ar fi accesarea unei zone de memorie dup\u0103 eliberare \u0219i ie\u0219irea \u00een afara limitelor bufferului. <\/p>\n

Func\u021bionarea sigur\u0103 a memoriei este asigurat\u0103 \u00een Rust \u00een timpul compil\u0103rii prin verificarea referin\u021belor, urm\u0103rirea de\u021binerii obiectelor \u0219i gestionarea duratei de via\u021b\u0103 a obiectelor (zona de vizibilitate), precum \u0219i prin evaluarea corectitudinii accesului la memorie \u00een timpul execu\u021biei codului. Rust ofer\u0103, de asemenea, instrumente pentru protec\u021bia \u00eempotriva dep\u0103\u0219irilor de numere \u00eentregi, necesit\u0103 ini\u021bializarea obligatorie a valorilor variabilelor \u00eenainte de utilizare, gestioneaz\u0103 mai bine erorile \u00een biblioteca standard, aplic\u0103 conceptul de referin\u021be \u0219i variabile imutabile (immutable) \u00een mod implicit \u0219i ofer\u0103 o tipizare static\u0103 puternic\u0103 pentru a minimiza erorile logice.
\n
Sursa: opennet.ro<\/a> <\/p>","protected":false,"gt_translate_keys":[{"key":"rendered","format":"html"}]},"excerpt":{"rendered":"

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